WSL2-Linux-Kernel/drivers/most/core.c

1489 строки
35 KiB
C
Исходник Обычный вид История

// SPDX-License-Identifier: GPL-2.0
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
/*
* core.c - Implementation of core module of MOST Linux driver stack
*
* Copyright (C) 2013-2020 Microchip Technology Germany II GmbH & Co. KG
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/poll.h>
#include <linux/wait.h>
#include <linux/kobject.h>
#include <linux/mutex.h>
#include <linux/completion.h>
#include <linux/sysfs.h>
#include <linux/kthread.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/most.h>
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
#define MAX_CHANNELS 64
#define STRING_SIZE 80
static struct ida mdev_id;
static int dummy_num_buffers;
static struct list_head comp_list;
struct pipe {
struct most_component *comp;
int refs;
int num_buffers;
};
struct most_channel {
struct device dev;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
struct completion cleanup;
atomic_t mbo_ref;
atomic_t mbo_nq_level;
u16 channel_id;
char name[STRING_SIZE];
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
bool is_poisoned;
struct mutex start_mutex; /* channel activation synchronization */
struct mutex nq_mutex; /* nq thread synchronization */
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
int is_starving;
struct most_interface *iface;
struct most_channel_config cfg;
bool keep_mbo;
bool enqueue_halt;
struct list_head fifo;
spinlock_t fifo_lock; /* fifo access synchronization */
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
struct list_head halt_fifo;
struct list_head list;
struct pipe pipe0;
struct pipe pipe1;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
struct list_head trash_fifo;
struct task_struct *hdm_enqueue_task;
wait_queue_head_t hdm_fifo_wq;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
};
#define to_channel(d) container_of(d, struct most_channel, dev)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
struct interface_private {
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
int dev_id;
char name[STRING_SIZE];
struct most_channel *channel[MAX_CHANNELS];
struct list_head channel_list;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
};
static const struct {
int most_ch_data_type;
format-security: move static strings to const While examining output from trial builds with -Wformat-security enabled, many strings were found that should be defined as "const", or as a char array instead of char pointer. This makes some static analysis easier, by producing fewer false positives. As these are all trivial changes, it seemed best to put them all in a single patch rather than chopping them up per maintainer. Link: http://lkml.kernel.org/r/20170405214711.GA5711@beast Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Jes Sorensen <jes@trained-monkey.org> [runner.c] Cc: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@armlinux.org.uk> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Yisen Zhuang <yisen.zhuang@huawei.com> Cc: Salil Mehta <salil.mehta@huawei.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Jiri Slaby <jslaby@suse.com> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: James Hogan <james.hogan@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Mugunthan V N <mugunthanvnm@ti.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Jarod Wilson <jarod@redhat.com> Cc: Florian Westphal <fw@strlen.de> Cc: Antonio Quartulli <a@unstable.cc> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Kejian Yan <yankejian@huawei.com> Cc: Daode Huang <huangdaode@hisilicon.com> Cc: Qianqian Xie <xieqianqian@huawei.com> Cc: Philippe Reynes <tremyfr@gmail.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Christian Gromm <christian.gromm@microchip.com> Cc: Andrey Shvetsov <andrey.shvetsov@k2l.de> Cc: Jason Litzinger <jlitzingerdev@gmail.com> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-09 01:59:05 +03:00
const char *name;
} ch_data_type[] = {
{ MOST_CH_CONTROL, "control" },
{ MOST_CH_ASYNC, "async" },
{ MOST_CH_SYNC, "sync" },
{ MOST_CH_ISOC, "isoc"},
{ MOST_CH_ISOC, "isoc_avp"},
};
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
/**
* list_pop_mbo - retrieves the first MBO of the list and removes it
* @ptr: the list head to grab the MBO from.
*/
#define list_pop_mbo(ptr) \
({ \
struct mbo *_mbo = list_first_entry(ptr, struct mbo, list); \
list_del(&_mbo->list); \
_mbo; \
})
/**
* most_free_mbo_coherent - free an MBO and its coherent buffer
* @mbo: most buffer
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
static void most_free_mbo_coherent(struct mbo *mbo)
{
struct most_channel *c = mbo->context;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
u16 const coherent_buf_size = c->cfg.buffer_size + c->cfg.extra_len;
if (c->iface->dma_free)
c->iface->dma_free(mbo, coherent_buf_size);
else
kfree(mbo->virt_address);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
kfree(mbo);
if (atomic_sub_and_test(1, &c->mbo_ref))
complete(&c->cleanup);
}
/**
* flush_channel_fifos - clear the channel fifos
* @c: pointer to channel object
*/
static void flush_channel_fifos(struct most_channel *c)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
unsigned long flags, hf_flags;
struct mbo *mbo, *tmp;
if (list_empty(&c->fifo) && list_empty(&c->halt_fifo))
return;
spin_lock_irqsave(&c->fifo_lock, flags);
list_for_each_entry_safe(mbo, tmp, &c->fifo, list) {
list_del(&mbo->list);
spin_unlock_irqrestore(&c->fifo_lock, flags);
most_free_mbo_coherent(mbo);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
spin_lock_irqsave(&c->fifo_lock, flags);
}
spin_unlock_irqrestore(&c->fifo_lock, flags);
spin_lock_irqsave(&c->fifo_lock, hf_flags);
list_for_each_entry_safe(mbo, tmp, &c->halt_fifo, list) {
list_del(&mbo->list);
spin_unlock_irqrestore(&c->fifo_lock, hf_flags);
most_free_mbo_coherent(mbo);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
spin_lock_irqsave(&c->fifo_lock, hf_flags);
}
spin_unlock_irqrestore(&c->fifo_lock, hf_flags);
if (unlikely((!list_empty(&c->fifo) || !list_empty(&c->halt_fifo))))
dev_warn(&c->dev, "Channel or trash fifo not empty\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
/**
* flush_trash_fifo - clear the trash fifo
* @c: pointer to channel object
*/
static int flush_trash_fifo(struct most_channel *c)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct mbo *mbo, *tmp;
unsigned long flags;
spin_lock_irqsave(&c->fifo_lock, flags);
list_for_each_entry_safe(mbo, tmp, &c->trash_fifo, list) {
list_del(&mbo->list);
spin_unlock_irqrestore(&c->fifo_lock, flags);
most_free_mbo_coherent(mbo);
spin_lock_irqsave(&c->fifo_lock, flags);
}
spin_unlock_irqrestore(&c->fifo_lock, flags);
return 0;
}
static ssize_t available_directions_show(struct device *dev,
struct device_attribute *attr,
char *buf)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned int i = c->channel_id;
strcpy(buf, "");
if (c->iface->channel_vector[i].direction & MOST_CH_RX)
strcat(buf, "rx ");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (c->iface->channel_vector[i].direction & MOST_CH_TX)
strcat(buf, "tx ");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
strcat(buf, "\n");
return strlen(buf);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static ssize_t available_datatypes_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned int i = c->channel_id;
strcpy(buf, "");
if (c->iface->channel_vector[i].data_type & MOST_CH_CONTROL)
strcat(buf, "control ");
if (c->iface->channel_vector[i].data_type & MOST_CH_ASYNC)
strcat(buf, "async ");
if (c->iface->channel_vector[i].data_type & MOST_CH_SYNC)
strcat(buf, "sync ");
if (c->iface->channel_vector[i].data_type & MOST_CH_ISOC)
strcat(buf, "isoc ");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
strcat(buf, "\n");
return strlen(buf);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static ssize_t number_of_packet_buffers_show(struct device *dev,
struct device_attribute *attr,
char *buf)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned int i = c->channel_id;
return snprintf(buf, PAGE_SIZE, "%d\n",
c->iface->channel_vector[i].num_buffers_packet);
}
static ssize_t number_of_stream_buffers_show(struct device *dev,
struct device_attribute *attr,
char *buf)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned int i = c->channel_id;
return snprintf(buf, PAGE_SIZE, "%d\n",
c->iface->channel_vector[i].num_buffers_streaming);
}
static ssize_t size_of_packet_buffer_show(struct device *dev,
struct device_attribute *attr,
char *buf)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned int i = c->channel_id;
return snprintf(buf, PAGE_SIZE, "%d\n",
c->iface->channel_vector[i].buffer_size_packet);
}
static ssize_t size_of_stream_buffer_show(struct device *dev,
struct device_attribute *attr,
char *buf)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned int i = c->channel_id;
return snprintf(buf, PAGE_SIZE, "%d\n",
c->iface->channel_vector[i].buffer_size_streaming);
}
static ssize_t channel_starving_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "%d\n", c->is_starving);
}
static ssize_t set_number_of_buffers_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.num_buffers);
}
static ssize_t set_buffer_size_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.buffer_size);
}
static ssize_t set_direction_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (c->cfg.direction & MOST_CH_TX)
return snprintf(buf, PAGE_SIZE, "tx\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
else if (c->cfg.direction & MOST_CH_RX)
return snprintf(buf, PAGE_SIZE, "rx\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "unconfigured\n");
}
static ssize_t set_datatype_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
int i;
struct most_channel *c = to_channel(dev);
for (i = 0; i < ARRAY_SIZE(ch_data_type); i++) {
if (c->cfg.data_type & ch_data_type[i].most_ch_data_type)
return snprintf(buf, PAGE_SIZE, "%s",
ch_data_type[i].name);
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "unconfigured\n");
}
static ssize_t set_subbuffer_size_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.subbuffer_size);
}
static ssize_t set_packets_per_xact_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_channel *c = to_channel(dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.packets_per_xact);
}
static ssize_t set_dbr_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct most_channel *c = to_channel(dev);
return snprintf(buf, PAGE_SIZE, "%d\n", c->cfg.dbr_size);
}
#define to_dev_attr(a) container_of(a, struct device_attribute, attr)
static umode_t channel_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device_attribute *dev_attr = to_dev_attr(attr);
struct device *dev = kobj_to_dev(kobj);
struct most_channel *c = to_channel(dev);
if (!strcmp(dev_attr->attr.name, "set_dbr_size") &&
(c->iface->interface != ITYPE_MEDIALB_DIM2))
return 0;
if (!strcmp(dev_attr->attr.name, "set_packets_per_xact") &&
(c->iface->interface != ITYPE_USB))
return 0;
return attr->mode;
}
#define DEV_ATTR(_name) (&dev_attr_##_name.attr)
static DEVICE_ATTR_RO(available_directions);
static DEVICE_ATTR_RO(available_datatypes);
static DEVICE_ATTR_RO(number_of_packet_buffers);
static DEVICE_ATTR_RO(number_of_stream_buffers);
static DEVICE_ATTR_RO(size_of_stream_buffer);
static DEVICE_ATTR_RO(size_of_packet_buffer);
static DEVICE_ATTR_RO(channel_starving);
static DEVICE_ATTR_RO(set_buffer_size);
static DEVICE_ATTR_RO(set_number_of_buffers);
static DEVICE_ATTR_RO(set_direction);
static DEVICE_ATTR_RO(set_datatype);
static DEVICE_ATTR_RO(set_subbuffer_size);
static DEVICE_ATTR_RO(set_packets_per_xact);
static DEVICE_ATTR_RO(set_dbr_size);
static struct attribute *channel_attrs[] = {
DEV_ATTR(available_directions),
DEV_ATTR(available_datatypes),
DEV_ATTR(number_of_packet_buffers),
DEV_ATTR(number_of_stream_buffers),
DEV_ATTR(size_of_stream_buffer),
DEV_ATTR(size_of_packet_buffer),
DEV_ATTR(channel_starving),
DEV_ATTR(set_buffer_size),
DEV_ATTR(set_number_of_buffers),
DEV_ATTR(set_direction),
DEV_ATTR(set_datatype),
DEV_ATTR(set_subbuffer_size),
DEV_ATTR(set_packets_per_xact),
DEV_ATTR(set_dbr_size),
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
NULL,
};
static const struct attribute_group channel_attr_group = {
.attrs = channel_attrs,
.is_visible = channel_attr_is_visible,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
};
static const struct attribute_group *channel_attr_groups[] = {
&channel_attr_group,
NULL,
};
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static ssize_t description_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_interface *iface = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%s\n", iface->description);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static ssize_t interface_show(struct device *dev,
struct device_attribute *attr,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
char *buf)
{
struct most_interface *iface = dev_get_drvdata(dev);
switch (iface->interface) {
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
case ITYPE_LOOPBACK:
return snprintf(buf, PAGE_SIZE, "loopback\n");
case ITYPE_I2C:
return snprintf(buf, PAGE_SIZE, "i2c\n");
case ITYPE_I2S:
return snprintf(buf, PAGE_SIZE, "i2s\n");
case ITYPE_TSI:
return snprintf(buf, PAGE_SIZE, "tsi\n");
case ITYPE_HBI:
return snprintf(buf, PAGE_SIZE, "hbi\n");
case ITYPE_MEDIALB_DIM:
return snprintf(buf, PAGE_SIZE, "mlb_dim\n");
case ITYPE_MEDIALB_DIM2:
return snprintf(buf, PAGE_SIZE, "mlb_dim2\n");
case ITYPE_USB:
return snprintf(buf, PAGE_SIZE, "usb\n");
case ITYPE_PCIE:
return snprintf(buf, PAGE_SIZE, "pcie\n");
}
return snprintf(buf, PAGE_SIZE, "unknown\n");
}
static DEVICE_ATTR_RO(description);
static DEVICE_ATTR_RO(interface);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static struct attribute *interface_attrs[] = {
DEV_ATTR(description),
DEV_ATTR(interface),
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
NULL,
};
static const struct attribute_group interface_attr_group = {
.attrs = interface_attrs,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
};
static const struct attribute_group *interface_attr_groups[] = {
&interface_attr_group,
NULL,
};
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static struct most_component *match_component(char *name)
{
struct most_component *comp;
list_for_each_entry(comp, &comp_list, list) {
if (!strcmp(comp->name, name))
return comp;
}
return NULL;
}
struct show_links_data {
int offs;
char *buf;
};
static int print_links(struct device *dev, void *data)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct show_links_data *d = data;
int offs = d->offs;
char *buf = d->buf;
struct most_channel *c;
struct most_interface *iface = dev_get_drvdata(dev);
list_for_each_entry(c, &iface->p->channel_list, list) {
if (c->pipe0.comp) {
offs += scnprintf(buf + offs,
PAGE_SIZE - offs,
"%s:%s:%s\n",
c->pipe0.comp->name,
dev_name(iface->dev),
dev_name(&c->dev));
}
if (c->pipe1.comp) {
offs += scnprintf(buf + offs,
PAGE_SIZE - offs,
"%s:%s:%s\n",
c->pipe1.comp->name,
dev_name(iface->dev),
dev_name(&c->dev));
}
}
d->offs = offs;
return 0;
}
static int most_match(struct device *dev, struct device_driver *drv)
{
if (!strcmp(dev_name(dev), "most"))
return 0;
else
return 1;
}
static struct bus_type mostbus = {
.name = "most",
.match = most_match,
};
static ssize_t links_show(struct device_driver *drv, char *buf)
{
struct show_links_data d = { .buf = buf };
bus_for_each_dev(&mostbus, NULL, &d, print_links);
return d.offs;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static ssize_t components_show(struct device_driver *drv, char *buf)
{
struct most_component *comp;
int offs = 0;
list_for_each_entry(comp, &comp_list, list) {
offs += scnprintf(buf + offs, PAGE_SIZE - offs, "%s\n",
comp->name);
}
return offs;
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
/**
* get_channel - get pointer to channel
* @mdev: name of the device interface
* @mdev_ch: name of channel
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
static struct most_channel *get_channel(char *mdev, char *mdev_ch)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct device *dev = NULL;
struct most_interface *iface;
struct most_channel *c, *tmp;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
dev = bus_find_device_by_name(&mostbus, NULL, mdev);
if (!dev)
return NULL;
put_device(dev);
iface = dev_get_drvdata(dev);
list_for_each_entry_safe(c, tmp, &iface->p->channel_list, list) {
if (!strcmp(dev_name(&c->dev), mdev_ch))
return c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
return NULL;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static
inline int link_channel_to_component(struct most_channel *c,
struct most_component *comp,
char *name,
char *comp_param)
{
int ret;
struct most_component **comp_ptr;
if (!c->pipe0.comp)
comp_ptr = &c->pipe0.comp;
else if (!c->pipe1.comp)
comp_ptr = &c->pipe1.comp;
else
return -ENOSPC;
*comp_ptr = comp;
ret = comp->probe_channel(c->iface, c->channel_id, &c->cfg, name,
comp_param);
if (ret) {
*comp_ptr = NULL;
return ret;
}
return 0;
}
int most_set_cfg_buffer_size(char *mdev, char *mdev_ch, u16 val)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
c->cfg.buffer_size = val;
return 0;
}
int most_set_cfg_subbuffer_size(char *mdev, char *mdev_ch, u16 val)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
c->cfg.subbuffer_size = val;
return 0;
}
int most_set_cfg_dbr_size(char *mdev, char *mdev_ch, u16 val)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
c->cfg.dbr_size = val;
return 0;
}
int most_set_cfg_num_buffers(char *mdev, char *mdev_ch, u16 val)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
c->cfg.num_buffers = val;
return 0;
}
int most_set_cfg_datatype(char *mdev, char *mdev_ch, char *buf)
{
int i;
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(ch_data_type); i++) {
if (!strcmp(buf, ch_data_type[i].name)) {
c->cfg.data_type = ch_data_type[i].most_ch_data_type;
break;
}
}
if (i == ARRAY_SIZE(ch_data_type))
dev_warn(&c->dev, "Invalid attribute settings\n");
return 0;
}
int most_set_cfg_direction(char *mdev, char *mdev_ch, char *buf)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
if (!strcmp(buf, "dir_rx")) {
c->cfg.direction = MOST_CH_RX;
} else if (!strcmp(buf, "rx")) {
c->cfg.direction = MOST_CH_RX;
} else if (!strcmp(buf, "dir_tx")) {
c->cfg.direction = MOST_CH_TX;
} else if (!strcmp(buf, "tx")) {
c->cfg.direction = MOST_CH_TX;
} else {
dev_err(&c->dev, "Invalid direction\n");
return -ENODATA;
}
return 0;
}
int most_set_cfg_packets_xact(char *mdev, char *mdev_ch, u16 val)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
c->cfg.packets_per_xact = val;
return 0;
}
int most_cfg_complete(char *comp_name)
{
struct most_component *comp;
comp = match_component(comp_name);
if (!comp)
return -ENODEV;
return comp->cfg_complete();
}
int most_add_link(char *mdev, char *mdev_ch, char *comp_name, char *link_name,
char *comp_param)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
struct most_component *comp = match_component(comp_name);
if (!c || !comp)
return -ENODEV;
return link_channel_to_component(c, comp, link_name, comp_param);
}
int most_remove_link(char *mdev, char *mdev_ch, char *comp_name)
{
struct most_channel *c;
struct most_component *comp;
comp = match_component(comp_name);
if (!comp)
return -ENODEV;
c = get_channel(mdev, mdev_ch);
if (!c)
return -ENODEV;
if (comp->disconnect_channel(c->iface, c->channel_id))
return -EIO;
if (c->pipe0.comp == comp)
c->pipe0.comp = NULL;
if (c->pipe1.comp == comp)
c->pipe1.comp = NULL;
return 0;
}
#define DRV_ATTR(_name) (&driver_attr_##_name.attr)
static DRIVER_ATTR_RO(links);
static DRIVER_ATTR_RO(components);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static struct attribute *mc_attrs[] = {
DRV_ATTR(links),
DRV_ATTR(components),
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
NULL,
};
static const struct attribute_group mc_attr_group = {
.attrs = mc_attrs,
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
};
static const struct attribute_group *mc_attr_groups[] = {
&mc_attr_group,
NULL,
};
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static struct device_driver mostbus_driver = {
.name = "most_core",
.bus = &mostbus,
.groups = mc_attr_groups,
};
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static inline void trash_mbo(struct mbo *mbo)
{
unsigned long flags;
struct most_channel *c = mbo->context;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
spin_lock_irqsave(&c->fifo_lock, flags);
list_add(&mbo->list, &c->trash_fifo);
spin_unlock_irqrestore(&c->fifo_lock, flags);
}
static bool hdm_mbo_ready(struct most_channel *c)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
bool empty;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (c->enqueue_halt)
return false;
spin_lock_irq(&c->fifo_lock);
empty = list_empty(&c->halt_fifo);
spin_unlock_irq(&c->fifo_lock);
return !empty;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static void nq_hdm_mbo(struct mbo *mbo)
{
unsigned long flags;
struct most_channel *c = mbo->context;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
spin_lock_irqsave(&c->fifo_lock, flags);
list_add_tail(&mbo->list, &c->halt_fifo);
spin_unlock_irqrestore(&c->fifo_lock, flags);
wake_up_interruptible(&c->hdm_fifo_wq);
}
static int hdm_enqueue_thread(void *data)
{
struct most_channel *c = data;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
struct mbo *mbo;
int ret;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
typeof(c->iface->enqueue) enqueue = c->iface->enqueue;
while (likely(!kthread_should_stop())) {
wait_event_interruptible(c->hdm_fifo_wq,
hdm_mbo_ready(c) ||
kthread_should_stop());
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
mutex_lock(&c->nq_mutex);
spin_lock_irq(&c->fifo_lock);
if (unlikely(c->enqueue_halt || list_empty(&c->halt_fifo))) {
spin_unlock_irq(&c->fifo_lock);
mutex_unlock(&c->nq_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
continue;
}
mbo = list_pop_mbo(&c->halt_fifo);
spin_unlock_irq(&c->fifo_lock);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (c->cfg.direction == MOST_CH_RX)
mbo->buffer_length = c->cfg.buffer_size;
ret = enqueue(mbo->ifp, mbo->hdm_channel_id, mbo);
mutex_unlock(&c->nq_mutex);
if (unlikely(ret)) {
dev_err(&c->dev, "Buffer enqueue failed\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
nq_hdm_mbo(mbo);
c->hdm_enqueue_task = NULL;
return 0;
}
}
return 0;
}
static int run_enqueue_thread(struct most_channel *c, int channel_id)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct task_struct *task =
kthread_run(hdm_enqueue_thread, c, "hdm_fifo_%d",
channel_id);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (IS_ERR(task))
return PTR_ERR(task);
c->hdm_enqueue_task = task;
return 0;
}
/**
* arm_mbo - recycle MBO for further usage
* @mbo: most buffer
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* This puts an MBO back to the list to have it ready for up coming
* tx transactions.
*
* In case the MBO belongs to a channel that recently has been
* poisoned, the MBO is scheduled to be trashed.
* Calls the completion handler of an attached component.
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
static void arm_mbo(struct mbo *mbo)
{
unsigned long flags;
struct most_channel *c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c = mbo->context;
if (c->is_poisoned) {
trash_mbo(mbo);
return;
}
spin_lock_irqsave(&c->fifo_lock, flags);
++*mbo->num_buffers_ptr;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
list_add_tail(&mbo->list, &c->fifo);
spin_unlock_irqrestore(&c->fifo_lock, flags);
if (c->pipe0.refs && c->pipe0.comp->tx_completion)
c->pipe0.comp->tx_completion(c->iface, c->channel_id);
if (c->pipe1.refs && c->pipe1.comp->tx_completion)
c->pipe1.comp->tx_completion(c->iface, c->channel_id);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
/**
* arm_mbo_chain - helper function that arms an MBO chain for the HDM
* @c: pointer to interface channel
* @dir: direction of the channel
* @compl: pointer to completion function
*
* This allocates buffer objects including the containing DMA coherent
* buffer and puts them in the fifo.
* Buffers of Rx channels are put in the kthread fifo, hence immediately
* submitted to the HDM.
*
* Returns the number of allocated and enqueued MBOs.
*/
static int arm_mbo_chain(struct most_channel *c, int dir,
void (*compl)(struct mbo *))
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
unsigned int i;
struct mbo *mbo;
unsigned long flags;
u32 coherent_buf_size = c->cfg.buffer_size + c->cfg.extra_len;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
atomic_set(&c->mbo_nq_level, 0);
for (i = 0; i < c->cfg.num_buffers; i++) {
mbo = kzalloc(sizeof(*mbo), GFP_KERNEL);
if (!mbo)
goto flush_fifos;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
mbo->context = c;
mbo->ifp = c->iface;
mbo->hdm_channel_id = c->channel_id;
if (c->iface->dma_alloc) {
mbo->virt_address =
c->iface->dma_alloc(mbo, coherent_buf_size);
} else {
mbo->virt_address =
kzalloc(coherent_buf_size, GFP_KERNEL);
}
if (!mbo->virt_address)
goto release_mbo;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
mbo->complete = compl;
mbo->num_buffers_ptr = &dummy_num_buffers;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (dir == MOST_CH_RX) {
nq_hdm_mbo(mbo);
atomic_inc(&c->mbo_nq_level);
} else {
spin_lock_irqsave(&c->fifo_lock, flags);
list_add_tail(&mbo->list, &c->fifo);
spin_unlock_irqrestore(&c->fifo_lock, flags);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
}
return c->cfg.num_buffers;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
release_mbo:
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
kfree(mbo);
flush_fifos:
flush_channel_fifos(c);
return 0;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
/**
* most_submit_mbo - submits an MBO to fifo
* @mbo: most buffer
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
void most_submit_mbo(struct mbo *mbo)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
if (WARN_ONCE(!mbo || !mbo->context,
"Bad buffer or missing channel reference\n"))
return;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
nq_hdm_mbo(mbo);
}
EXPORT_SYMBOL_GPL(most_submit_mbo);
/**
* most_write_completion - write completion handler
* @mbo: most buffer
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* This recycles the MBO for further usage. In case the channel has been
* poisoned, the MBO is scheduled to be trashed.
*/
static void most_write_completion(struct mbo *mbo)
{
struct most_channel *c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c = mbo->context;
if (unlikely(c->is_poisoned || (mbo->status == MBO_E_CLOSE)))
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
trash_mbo(mbo);
else
arm_mbo(mbo);
}
int channel_has_mbo(struct most_interface *iface, int id,
struct most_component *comp)
{
struct most_channel *c = iface->p->channel[id];
unsigned long flags;
int empty;
if (unlikely(!c))
return -EINVAL;
if (c->pipe0.refs && c->pipe1.refs &&
((comp == c->pipe0.comp && c->pipe0.num_buffers <= 0) ||
(comp == c->pipe1.comp && c->pipe1.num_buffers <= 0)))
return 0;
spin_lock_irqsave(&c->fifo_lock, flags);
empty = list_empty(&c->fifo);
spin_unlock_irqrestore(&c->fifo_lock, flags);
return !empty;
}
EXPORT_SYMBOL_GPL(channel_has_mbo);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
/**
* most_get_mbo - get pointer to an MBO of pool
* @iface: pointer to interface instance
* @id: channel ID
* @comp: driver component
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* This attempts to get a free buffer out of the channel fifo.
* Returns a pointer to MBO on success or NULL otherwise.
*/
struct mbo *most_get_mbo(struct most_interface *iface, int id,
struct most_component *comp)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct mbo *mbo;
struct most_channel *c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
unsigned long flags;
int *num_buffers_ptr;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c = iface->p->channel[id];
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (unlikely(!c))
return NULL;
if (c->pipe0.refs && c->pipe1.refs &&
((comp == c->pipe0.comp && c->pipe0.num_buffers <= 0) ||
(comp == c->pipe1.comp && c->pipe1.num_buffers <= 0)))
return NULL;
if (comp == c->pipe0.comp)
num_buffers_ptr = &c->pipe0.num_buffers;
else if (comp == c->pipe1.comp)
num_buffers_ptr = &c->pipe1.num_buffers;
else
num_buffers_ptr = &dummy_num_buffers;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
spin_lock_irqsave(&c->fifo_lock, flags);
if (list_empty(&c->fifo)) {
spin_unlock_irqrestore(&c->fifo_lock, flags);
return NULL;
}
mbo = list_pop_mbo(&c->fifo);
--*num_buffers_ptr;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
spin_unlock_irqrestore(&c->fifo_lock, flags);
mbo->num_buffers_ptr = num_buffers_ptr;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
mbo->buffer_length = c->cfg.buffer_size;
return mbo;
}
EXPORT_SYMBOL_GPL(most_get_mbo);
/**
* most_put_mbo - return buffer to pool
* @mbo: most buffer
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
void most_put_mbo(struct mbo *mbo)
{
struct most_channel *c = mbo->context;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (c->cfg.direction == MOST_CH_TX) {
arm_mbo(mbo);
return;
}
nq_hdm_mbo(mbo);
atomic_inc(&c->mbo_nq_level);
}
EXPORT_SYMBOL_GPL(most_put_mbo);
/**
* most_read_completion - read completion handler
* @mbo: most buffer
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* This function is called by the HDM when data has been received from the
* hardware and copied to the buffer of the MBO.
*
* In case the channel has been poisoned it puts the buffer in the trash queue.
* Otherwise, it passes the buffer to an component for further processing.
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
static void most_read_completion(struct mbo *mbo)
{
struct most_channel *c = mbo->context;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (unlikely(c->is_poisoned || (mbo->status == MBO_E_CLOSE))) {
trash_mbo(mbo);
return;
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (mbo->status == MBO_E_INVAL) {
nq_hdm_mbo(mbo);
atomic_inc(&c->mbo_nq_level);
return;
}
if (atomic_sub_and_test(1, &c->mbo_nq_level))
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c->is_starving = 1;
if (c->pipe0.refs && c->pipe0.comp->rx_completion &&
c->pipe0.comp->rx_completion(mbo) == 0)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return;
if (c->pipe1.refs && c->pipe1.comp->rx_completion &&
c->pipe1.comp->rx_completion(mbo) == 0)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return;
most_put_mbo(mbo);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
/**
* most_start_channel - prepares a channel for communication
* @iface: pointer to interface instance
* @id: channel ID
* @comp: driver component
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* This prepares the channel for usage. Cross-checks whether the
* channel's been properly configured.
*
* Returns 0 on success or error code otherwise.
*/
int most_start_channel(struct most_interface *iface, int id,
struct most_component *comp)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
int num_buffer;
int ret;
struct most_channel *c = iface->p->channel[id];
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (unlikely(!c))
return -EINVAL;
mutex_lock(&c->start_mutex);
if (c->pipe0.refs + c->pipe1.refs > 0)
goto out; /* already started by another component */
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (!try_module_get(iface->mod)) {
dev_err(&c->dev, "Failed to acquire HDM lock\n");
mutex_unlock(&c->start_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return -ENOLCK;
}
c->cfg.extra_len = 0;
if (c->iface->configure(c->iface, c->channel_id, &c->cfg)) {
dev_err(&c->dev, "Channel configuration failed. Go check settings...\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
ret = -EINVAL;
goto err_put_module;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
init_waitqueue_head(&c->hdm_fifo_wq);
if (c->cfg.direction == MOST_CH_RX)
num_buffer = arm_mbo_chain(c, c->cfg.direction,
most_read_completion);
else
num_buffer = arm_mbo_chain(c, c->cfg.direction,
most_write_completion);
if (unlikely(!num_buffer)) {
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
ret = -ENOMEM;
goto err_put_module;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
ret = run_enqueue_thread(c, id);
if (ret)
goto err_put_module;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c->is_starving = 0;
c->pipe0.num_buffers = c->cfg.num_buffers / 2;
c->pipe1.num_buffers = c->cfg.num_buffers - c->pipe0.num_buffers;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
atomic_set(&c->mbo_ref, num_buffer);
out:
if (comp == c->pipe0.comp)
c->pipe0.refs++;
if (comp == c->pipe1.comp)
c->pipe1.refs++;
mutex_unlock(&c->start_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return 0;
err_put_module:
module_put(iface->mod);
mutex_unlock(&c->start_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return ret;
}
EXPORT_SYMBOL_GPL(most_start_channel);
/**
* most_stop_channel - stops a running channel
* @iface: pointer to interface instance
* @id: channel ID
* @comp: driver component
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
int most_stop_channel(struct most_interface *iface, int id,
struct most_component *comp)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
struct most_channel *c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (unlikely((!iface) || (id >= iface->num_channels) || (id < 0))) {
pr_err("Bad interface or index out of range\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return -EINVAL;
}
c = iface->p->channel[id];
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (unlikely(!c))
return -EINVAL;
mutex_lock(&c->start_mutex);
if (c->pipe0.refs + c->pipe1.refs >= 2)
goto out;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (c->hdm_enqueue_task)
kthread_stop(c->hdm_enqueue_task);
c->hdm_enqueue_task = NULL;
if (iface->mod)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
module_put(iface->mod);
c->is_poisoned = true;
if (c->iface->poison_channel(c->iface, c->channel_id)) {
dev_err(&c->dev, "Failed to stop channel %d of interface %s\n", c->channel_id,
c->iface->description);
mutex_unlock(&c->start_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return -EAGAIN;
}
flush_trash_fifo(c);
flush_channel_fifos(c);
#ifdef CMPL_INTERRUPTIBLE
if (wait_for_completion_interruptible(&c->cleanup)) {
dev_err(&c->dev, "Interrupted while cleaning up channel %d\n", c->channel_id);
mutex_unlock(&c->start_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return -EINTR;
}
#else
wait_for_completion(&c->cleanup);
#endif
c->is_poisoned = false;
out:
if (comp == c->pipe0.comp)
c->pipe0.refs--;
if (comp == c->pipe1.comp)
c->pipe1.refs--;
mutex_unlock(&c->start_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return 0;
}
EXPORT_SYMBOL_GPL(most_stop_channel);
/**
* most_register_component - registers a driver component with the core
* @comp: driver component
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
int most_register_component(struct most_component *comp)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
if (!comp) {
pr_err("Bad component\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return -EINVAL;
}
list_add_tail(&comp->list, &comp_list);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return 0;
}
EXPORT_SYMBOL_GPL(most_register_component);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static int disconnect_channels(struct device *dev, void *data)
{
struct most_interface *iface;
struct most_channel *c, *tmp;
struct most_component *comp = data;
iface = dev_get_drvdata(dev);
list_for_each_entry_safe(c, tmp, &iface->p->channel_list, list) {
if (c->pipe0.comp == comp || c->pipe1.comp == comp)
comp->disconnect_channel(c->iface, c->channel_id);
if (c->pipe0.comp == comp)
c->pipe0.comp = NULL;
if (c->pipe1.comp == comp)
c->pipe1.comp = NULL;
}
return 0;
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
/**
* most_deregister_component - deregisters a driver component with the core
* @comp: driver component
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*/
int most_deregister_component(struct most_component *comp)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
if (!comp) {
pr_err("Bad component\n");
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return -EINVAL;
}
bus_for_each_dev(&mostbus, NULL, comp, disconnect_channels);
list_del(&comp->list);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return 0;
}
EXPORT_SYMBOL_GPL(most_deregister_component);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
static void release_channel(struct device *dev)
{
struct most_channel *c = to_channel(dev);
kfree(c);
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
/**
* most_register_interface - registers an interface with core
* @iface: device interface
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* Allocates and initializes a new interface instance and all of its channels.
* Returns a pointer to kobject or an error pointer.
*/
int most_register_interface(struct most_interface *iface)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
{
unsigned int i;
int id;
struct most_channel *c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (!iface || !iface->enqueue || !iface->configure ||
!iface->poison_channel || (iface->num_channels > MAX_CHANNELS))
return -EINVAL;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
id = ida_simple_get(&mdev_id, 0, 0, GFP_KERNEL);
if (id < 0) {
dev_err(iface->dev, "Failed to allocate device ID\n");
return id;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
iface->p = kzalloc(sizeof(*iface->p), GFP_KERNEL);
if (!iface->p) {
ida_simple_remove(&mdev_id, id);
return -ENOMEM;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
INIT_LIST_HEAD(&iface->p->channel_list);
iface->p->dev_id = id;
strscpy(iface->p->name, iface->description, sizeof(iface->p->name));
iface->dev->bus = &mostbus;
iface->dev->groups = interface_attr_groups;
dev_set_drvdata(iface->dev, iface);
if (device_register(iface->dev)) {
dev_err(iface->dev, "Failed to register interface device\n");
kfree(iface->p);
put_device(iface->dev);
ida_simple_remove(&mdev_id, id);
return -ENOMEM;
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
for (i = 0; i < iface->num_channels; i++) {
const char *name_suffix = iface->channel_vector[i].name_suffix;
c = kzalloc(sizeof(*c), GFP_KERNEL);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (!c)
goto err_free_resources;
if (!name_suffix)
snprintf(c->name, STRING_SIZE, "ch%d", i);
else
snprintf(c->name, STRING_SIZE, "%s", name_suffix);
c->dev.init_name = c->name;
c->dev.parent = iface->dev;
c->dev.groups = channel_attr_groups;
c->dev.release = release_channel;
iface->p->channel[i] = c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c->is_starving = 0;
c->iface = iface;
c->channel_id = i;
c->keep_mbo = false;
c->enqueue_halt = false;
c->is_poisoned = false;
c->cfg.direction = 0;
c->cfg.data_type = 0;
c->cfg.num_buffers = 0;
c->cfg.buffer_size = 0;
c->cfg.subbuffer_size = 0;
c->cfg.packets_per_xact = 0;
spin_lock_init(&c->fifo_lock);
INIT_LIST_HEAD(&c->fifo);
INIT_LIST_HEAD(&c->trash_fifo);
INIT_LIST_HEAD(&c->halt_fifo);
init_completion(&c->cleanup);
atomic_set(&c->mbo_ref, 0);
mutex_init(&c->start_mutex);
mutex_init(&c->nq_mutex);
list_add_tail(&c->list, &iface->p->channel_list);
if (device_register(&c->dev)) {
dev_err(&c->dev, "Failed to register channel device\n");
goto err_free_most_channel;
}
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
most_interface_register_notify(iface->description);
return 0;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
err_free_most_channel:
put_device(&c->dev);
err_free_resources:
while (i > 0) {
c = iface->p->channel[--i];
device_unregister(&c->dev);
}
kfree(iface->p);
device_unregister(iface->dev);
ida_simple_remove(&mdev_id, id);
return -ENOMEM;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
EXPORT_SYMBOL_GPL(most_register_interface);
/**
* most_deregister_interface - deregisters an interface with core
* @iface: device interface
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
*
* Before removing an interface instance from the list, all running
* channels are stopped and poisoned.
*/
void most_deregister_interface(struct most_interface *iface)
{
int i;
struct most_channel *c;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
for (i = 0; i < iface->num_channels; i++) {
c = iface->p->channel[i];
if (c->pipe0.comp)
c->pipe0.comp->disconnect_channel(c->iface,
c->channel_id);
if (c->pipe1.comp)
c->pipe1.comp->disconnect_channel(c->iface,
c->channel_id);
c->pipe0.comp = NULL;
c->pipe1.comp = NULL;
list_del(&c->list);
device_unregister(&c->dev);
}
ida_simple_remove(&mdev_id, iface->p->dev_id);
kfree(iface->p);
device_unregister(iface->dev);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
EXPORT_SYMBOL_GPL(most_deregister_interface);
/**
* most_stop_enqueue - prevents core from enqueueing MBOs
* @iface: pointer to interface
* @id: channel id
*
* This is called by an HDM that _cannot_ attend to its duties and
* is imminent to get run over by the core. The core is not going to
* enqueue any further packets unless the flagging HDM calls
* most_resume enqueue().
*/
void most_stop_enqueue(struct most_interface *iface, int id)
{
struct most_channel *c = iface->p->channel[id];
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (!c)
return;
mutex_lock(&c->nq_mutex);
c->enqueue_halt = true;
mutex_unlock(&c->nq_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
EXPORT_SYMBOL_GPL(most_stop_enqueue);
/**
* most_resume_enqueue - allow core to enqueue MBOs again
* @iface: pointer to interface
* @id: channel id
*
* This clears the enqueue halt flag and enqueues all MBOs currently
* sitting in the wait fifo.
*/
void most_resume_enqueue(struct most_interface *iface, int id)
{
struct most_channel *c = iface->p->channel[id];
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
if (!c)
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return;
mutex_lock(&c->nq_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
c->enqueue_halt = false;
mutex_unlock(&c->nq_mutex);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
wake_up_interruptible(&c->hdm_fifo_wq);
}
EXPORT_SYMBOL_GPL(most_resume_enqueue);
static int __init most_init(void)
{
int err;
INIT_LIST_HEAD(&comp_list);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
ida_init(&mdev_id);
err = bus_register(&mostbus);
if (err) {
pr_err("Failed to register most bus\n");
return err;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
err = driver_register(&mostbus_driver);
if (err) {
pr_err("Failed to register core driver\n");
goto err_unregister_bus;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
configfs_init();
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
return 0;
err_unregister_bus:
bus_unregister(&mostbus);
return err;
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
}
static void __exit most_exit(void)
{
driver_unregister(&mostbus_driver);
bus_unregister(&mostbus);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24 17:11:48 +03:00
ida_destroy(&mdev_id);
}
subsys_initcall(most_init);
Staging: most: add MOST driver's core module This patch adds the core module of the MOST driver to the kernel's driver staging area. This module is part of the MOST driver and handles the configuration interface in sysfs, the buffer management and the data routing. MOST defines the protocol, hardware and software layers necessary to allow for the efficient and low-cost transport of control, real-time and packet data using a single medium (physical layer). Media currently in use are fiber optics, unshielded twisted pair cables (UTP) and coax cables. MOST also supports various speed grades up to 150 Mbps. For more information on MOST, visit the MOST Cooperation website: www.mostcooperation.com. Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming. Therefore, the driver perfectly fits to the mission of Automotive Grade Linux to create open source software solutions for automotive applications. The driver consists basically of three layers. The hardware layer, the core layer and the application layer. The core layer consists of the core module only. This module handles the communication flow through all three layers, the configuration of the driver, the configuration interface representation in sysfs, and the buffer management. For each of the other two layers a selection of modules is provided. These modules can arbitrarily be combined to meet the needs of the desired system architecture. A module of the hardware layer is referred to as an HDM (hardware dependent module). Each module of this layer handles exactly one of the peripheral interfaces of a network interface controller (e.g. USB, MediaLB, I2C). A module of the application layer is referred to as an AIM (application interfacing module). The modules of this layer give access to MOST via one the following ways: character devices, ALSA, Networking or V4L2. To physically access MOST, an Intelligent Network Interface Controller (INIC) is needed. For more information on available controllers visit: www.microchip.com Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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module_exit(most_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Gromm <christian.gromm@microchip.com>");
MODULE_DESCRIPTION("Core module of stacked MOST Linux driver");