4675 строки
123 KiB
C
4675 строки
123 KiB
C
/*****************************************************************************/
|
|
|
|
/*
|
|
* istallion.c -- stallion intelligent multiport serial driver.
|
|
*
|
|
* Copyright (C) 1996-1999 Stallion Technologies
|
|
* Copyright (C) 1994-1996 Greg Ungerer.
|
|
*
|
|
* This code is loosely based on the Linux serial driver, written by
|
|
* Linus Torvalds, Theodore T'so and others.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
*/
|
|
|
|
/*****************************************************************************/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/tty_flip.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/cdk.h>
|
|
#include <linux/comstats.h>
|
|
#include <linux/istallion.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/eisa.h>
|
|
#include <linux/ctype.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include <linux/pci.h>
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define different board types. Not all of the following board types
|
|
* are supported by this driver. But I will use the standard "assigned"
|
|
* board numbers. Currently supported boards are abbreviated as:
|
|
* ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and
|
|
* STAL = Stallion.
|
|
*/
|
|
#define BRD_UNKNOWN 0
|
|
#define BRD_STALLION 1
|
|
#define BRD_BRUMBY4 2
|
|
#define BRD_ONBOARD2 3
|
|
#define BRD_ONBOARD 4
|
|
#define BRD_ONBOARDE 7
|
|
#define BRD_ECP 23
|
|
#define BRD_ECPE 24
|
|
#define BRD_ECPMC 25
|
|
#define BRD_ECPPCI 29
|
|
|
|
#define BRD_BRUMBY BRD_BRUMBY4
|
|
|
|
/*
|
|
* Define a configuration structure to hold the board configuration.
|
|
* Need to set this up in the code (for now) with the boards that are
|
|
* to be configured into the system. This is what needs to be modified
|
|
* when adding/removing/modifying boards. Each line entry in the
|
|
* stli_brdconf[] array is a board. Each line contains io/irq/memory
|
|
* ranges for that board (as well as what type of board it is).
|
|
* Some examples:
|
|
* { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
|
|
* This line will configure an EasyConnection 8/64 at io address 2a0,
|
|
* and shared memory address of cc000. Multiple EasyConnection 8/64
|
|
* boards can share the same shared memory address space. No interrupt
|
|
* is required for this board type.
|
|
* Another example:
|
|
* { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 },
|
|
* This line will configure an EasyConnection 8/64 EISA in slot 5 and
|
|
* shared memory address of 0x80000000 (2 GByte). Multiple
|
|
* EasyConnection 8/64 EISA boards can share the same shared memory
|
|
* address space. No interrupt is required for this board type.
|
|
* Another example:
|
|
* { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 },
|
|
* This line will configure an ONboard (ISA type) at io address 240,
|
|
* and shared memory address of d0000. Multiple ONboards can share
|
|
* the same shared memory address space. No interrupt required.
|
|
* Another example:
|
|
* { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 },
|
|
* This line will configure a Brumby board (any number of ports!) at
|
|
* io address 360 and shared memory address of c8000. All Brumby boards
|
|
* configured into a system must have their own separate io and memory
|
|
* addresses. No interrupt is required.
|
|
* Another example:
|
|
* { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 },
|
|
* This line will configure an original Stallion board at io address 330
|
|
* and shared memory address d0000 (this would only be valid for a "V4.0"
|
|
* or Rev.O Stallion board). All Stallion boards configured into the
|
|
* system must have their own separate io and memory addresses. No
|
|
* interrupt is required.
|
|
*/
|
|
|
|
struct stlconf {
|
|
int brdtype;
|
|
int ioaddr1;
|
|
int ioaddr2;
|
|
unsigned long memaddr;
|
|
int irq;
|
|
int irqtype;
|
|
};
|
|
|
|
static unsigned int stli_nrbrds;
|
|
|
|
/* stli_lock must NOT be taken holding brd_lock */
|
|
static spinlock_t stli_lock; /* TTY logic lock */
|
|
static spinlock_t brd_lock; /* Board logic lock */
|
|
|
|
/*
|
|
* There is some experimental EISA board detection code in this driver.
|
|
* By default it is disabled, but for those that want to try it out,
|
|
* then set the define below to be 1.
|
|
*/
|
|
#define STLI_EISAPROBE 0
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define some important driver characteristics. Device major numbers
|
|
* allocated as per Linux Device Registry.
|
|
*/
|
|
#ifndef STL_SIOMEMMAJOR
|
|
#define STL_SIOMEMMAJOR 28
|
|
#endif
|
|
#ifndef STL_SERIALMAJOR
|
|
#define STL_SERIALMAJOR 24
|
|
#endif
|
|
#ifndef STL_CALLOUTMAJOR
|
|
#define STL_CALLOUTMAJOR 25
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define our local driver identity first. Set up stuff to deal with
|
|
* all the local structures required by a serial tty driver.
|
|
*/
|
|
static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
|
|
static char *stli_drvname = "istallion";
|
|
static char *stli_drvversion = "5.6.0";
|
|
static char *stli_serialname = "ttyE";
|
|
|
|
static struct tty_driver *stli_serial;
|
|
|
|
|
|
#define STLI_TXBUFSIZE 4096
|
|
|
|
/*
|
|
* Use a fast local buffer for cooked characters. Typically a whole
|
|
* bunch of cooked characters come in for a port, 1 at a time. So we
|
|
* save those up into a local buffer, then write out the whole lot
|
|
* with a large memcpy. Just use 1 buffer for all ports, since its
|
|
* use it is only need for short periods of time by each port.
|
|
*/
|
|
static char *stli_txcookbuf;
|
|
static int stli_txcooksize;
|
|
static int stli_txcookrealsize;
|
|
static struct tty_struct *stli_txcooktty;
|
|
|
|
/*
|
|
* Define a local default termios struct. All ports will be created
|
|
* with this termios initially. Basically all it defines is a raw port
|
|
* at 9600 baud, 8 data bits, no parity, 1 stop bit.
|
|
*/
|
|
static struct ktermios stli_deftermios = {
|
|
.c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL),
|
|
.c_cc = INIT_C_CC,
|
|
.c_ispeed = 9600,
|
|
.c_ospeed = 9600,
|
|
};
|
|
|
|
/*
|
|
* Define global stats structures. Not used often, and can be
|
|
* re-used for each stats call.
|
|
*/
|
|
static comstats_t stli_comstats;
|
|
static combrd_t stli_brdstats;
|
|
static struct asystats stli_cdkstats;
|
|
|
|
/*****************************************************************************/
|
|
|
|
static DEFINE_MUTEX(stli_brdslock);
|
|
static struct stlibrd *stli_brds[STL_MAXBRDS];
|
|
|
|
static int stli_shared;
|
|
|
|
/*
|
|
* Per board state flags. Used with the state field of the board struct.
|
|
* Not really much here... All we need to do is keep track of whether
|
|
* the board has been detected, and whether it is actually running a slave
|
|
* or not.
|
|
*/
|
|
#define BST_FOUND 0x1
|
|
#define BST_STARTED 0x2
|
|
#define BST_PROBED 0x4
|
|
|
|
/*
|
|
* Define the set of port state flags. These are marked for internal
|
|
* state purposes only, usually to do with the state of communications
|
|
* with the slave. Most of them need to be updated atomically, so always
|
|
* use the bit setting operations (unless protected by cli/sti).
|
|
*/
|
|
#define ST_INITIALIZING 1
|
|
#define ST_OPENING 2
|
|
#define ST_CLOSING 3
|
|
#define ST_CMDING 4
|
|
#define ST_TXBUSY 5
|
|
#define ST_RXING 6
|
|
#define ST_DOFLUSHRX 7
|
|
#define ST_DOFLUSHTX 8
|
|
#define ST_DOSIGS 9
|
|
#define ST_RXSTOP 10
|
|
#define ST_GETSIGS 11
|
|
|
|
/*
|
|
* Define an array of board names as printable strings. Handy for
|
|
* referencing boards when printing trace and stuff.
|
|
*/
|
|
static char *stli_brdnames[] = {
|
|
"Unknown",
|
|
"Stallion",
|
|
"Brumby",
|
|
"ONboard-MC",
|
|
"ONboard",
|
|
"Brumby",
|
|
"Brumby",
|
|
"ONboard-EI",
|
|
NULL,
|
|
"ONboard",
|
|
"ONboard-MC",
|
|
"ONboard-MC",
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
"EasyIO",
|
|
"EC8/32-AT",
|
|
"EC8/32-MC",
|
|
"EC8/64-AT",
|
|
"EC8/64-EI",
|
|
"EC8/64-MC",
|
|
"EC8/32-PCI",
|
|
"EC8/64-PCI",
|
|
"EasyIO-PCI",
|
|
"EC/RA-PCI",
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define some string labels for arguments passed from the module
|
|
* load line. These allow for easy board definitions, and easy
|
|
* modification of the io, memory and irq resoucres.
|
|
*/
|
|
|
|
static char *board0[8];
|
|
static char *board1[8];
|
|
static char *board2[8];
|
|
static char *board3[8];
|
|
|
|
static char **stli_brdsp[] = {
|
|
(char **) &board0,
|
|
(char **) &board1,
|
|
(char **) &board2,
|
|
(char **) &board3
|
|
};
|
|
|
|
/*
|
|
* Define a set of common board names, and types. This is used to
|
|
* parse any module arguments.
|
|
*/
|
|
|
|
static struct stlibrdtype {
|
|
char *name;
|
|
int type;
|
|
} stli_brdstr[] = {
|
|
{ "stallion", BRD_STALLION },
|
|
{ "1", BRD_STALLION },
|
|
{ "brumby", BRD_BRUMBY },
|
|
{ "brumby4", BRD_BRUMBY },
|
|
{ "brumby/4", BRD_BRUMBY },
|
|
{ "brumby-4", BRD_BRUMBY },
|
|
{ "brumby8", BRD_BRUMBY },
|
|
{ "brumby/8", BRD_BRUMBY },
|
|
{ "brumby-8", BRD_BRUMBY },
|
|
{ "brumby16", BRD_BRUMBY },
|
|
{ "brumby/16", BRD_BRUMBY },
|
|
{ "brumby-16", BRD_BRUMBY },
|
|
{ "2", BRD_BRUMBY },
|
|
{ "onboard2", BRD_ONBOARD2 },
|
|
{ "onboard-2", BRD_ONBOARD2 },
|
|
{ "onboard/2", BRD_ONBOARD2 },
|
|
{ "onboard-mc", BRD_ONBOARD2 },
|
|
{ "onboard/mc", BRD_ONBOARD2 },
|
|
{ "onboard-mca", BRD_ONBOARD2 },
|
|
{ "onboard/mca", BRD_ONBOARD2 },
|
|
{ "3", BRD_ONBOARD2 },
|
|
{ "onboard", BRD_ONBOARD },
|
|
{ "onboardat", BRD_ONBOARD },
|
|
{ "4", BRD_ONBOARD },
|
|
{ "onboarde", BRD_ONBOARDE },
|
|
{ "onboard-e", BRD_ONBOARDE },
|
|
{ "onboard/e", BRD_ONBOARDE },
|
|
{ "onboard-ei", BRD_ONBOARDE },
|
|
{ "onboard/ei", BRD_ONBOARDE },
|
|
{ "7", BRD_ONBOARDE },
|
|
{ "ecp", BRD_ECP },
|
|
{ "ecpat", BRD_ECP },
|
|
{ "ec8/64", BRD_ECP },
|
|
{ "ec8/64-at", BRD_ECP },
|
|
{ "ec8/64-isa", BRD_ECP },
|
|
{ "23", BRD_ECP },
|
|
{ "ecpe", BRD_ECPE },
|
|
{ "ecpei", BRD_ECPE },
|
|
{ "ec8/64-e", BRD_ECPE },
|
|
{ "ec8/64-ei", BRD_ECPE },
|
|
{ "24", BRD_ECPE },
|
|
{ "ecpmc", BRD_ECPMC },
|
|
{ "ec8/64-mc", BRD_ECPMC },
|
|
{ "ec8/64-mca", BRD_ECPMC },
|
|
{ "25", BRD_ECPMC },
|
|
{ "ecppci", BRD_ECPPCI },
|
|
{ "ec/ra", BRD_ECPPCI },
|
|
{ "ec/ra-pc", BRD_ECPPCI },
|
|
{ "ec/ra-pci", BRD_ECPPCI },
|
|
{ "29", BRD_ECPPCI },
|
|
};
|
|
|
|
/*
|
|
* Define the module agruments.
|
|
*/
|
|
MODULE_AUTHOR("Greg Ungerer");
|
|
MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
module_param_array(board0, charp, NULL, 0);
|
|
MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
|
|
module_param_array(board1, charp, NULL, 0);
|
|
MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
|
|
module_param_array(board2, charp, NULL, 0);
|
|
MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
|
|
module_param_array(board3, charp, NULL, 0);
|
|
MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
|
|
|
|
#if STLI_EISAPROBE != 0
|
|
/*
|
|
* Set up a default memory address table for EISA board probing.
|
|
* The default addresses are all bellow 1Mbyte, which has to be the
|
|
* case anyway. They should be safe, since we only read values from
|
|
* them, and interrupts are disabled while we do it. If the higher
|
|
* memory support is compiled in then we also try probing around
|
|
* the 1Gb, 2Gb and 3Gb areas as well...
|
|
*/
|
|
static unsigned long stli_eisamemprobeaddrs[] = {
|
|
0xc0000, 0xd0000, 0xe0000, 0xf0000,
|
|
0x80000000, 0x80010000, 0x80020000, 0x80030000,
|
|
0x40000000, 0x40010000, 0x40020000, 0x40030000,
|
|
0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000,
|
|
0xff000000, 0xff010000, 0xff020000, 0xff030000,
|
|
};
|
|
|
|
static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs);
|
|
#endif
|
|
|
|
/*
|
|
* Define the Stallion PCI vendor and device IDs.
|
|
*/
|
|
#ifndef PCI_DEVICE_ID_ECRA
|
|
#define PCI_DEVICE_ID_ECRA 0x0004
|
|
#endif
|
|
|
|
static struct pci_device_id istallion_pci_tbl[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), },
|
|
{ 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, istallion_pci_tbl);
|
|
|
|
static struct pci_driver stli_pcidriver;
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Hardware configuration info for ECP boards. These defines apply
|
|
* to the directly accessible io ports of the ECP. There is a set of
|
|
* defines for each ECP board type, ISA, EISA, MCA and PCI.
|
|
*/
|
|
#define ECP_IOSIZE 4
|
|
|
|
#define ECP_MEMSIZE (128 * 1024)
|
|
#define ECP_PCIMEMSIZE (256 * 1024)
|
|
|
|
#define ECP_ATPAGESIZE (4 * 1024)
|
|
#define ECP_MCPAGESIZE (4 * 1024)
|
|
#define ECP_EIPAGESIZE (64 * 1024)
|
|
#define ECP_PCIPAGESIZE (64 * 1024)
|
|
|
|
#define STL_EISAID 0x8c4e
|
|
|
|
/*
|
|
* Important defines for the ISA class of ECP board.
|
|
*/
|
|
#define ECP_ATIREG 0
|
|
#define ECP_ATCONFR 1
|
|
#define ECP_ATMEMAR 2
|
|
#define ECP_ATMEMPR 3
|
|
#define ECP_ATSTOP 0x1
|
|
#define ECP_ATINTENAB 0x10
|
|
#define ECP_ATENABLE 0x20
|
|
#define ECP_ATDISABLE 0x00
|
|
#define ECP_ATADDRMASK 0x3f000
|
|
#define ECP_ATADDRSHFT 12
|
|
|
|
/*
|
|
* Important defines for the EISA class of ECP board.
|
|
*/
|
|
#define ECP_EIIREG 0
|
|
#define ECP_EIMEMARL 1
|
|
#define ECP_EICONFR 2
|
|
#define ECP_EIMEMARH 3
|
|
#define ECP_EIENABLE 0x1
|
|
#define ECP_EIDISABLE 0x0
|
|
#define ECP_EISTOP 0x4
|
|
#define ECP_EIEDGE 0x00
|
|
#define ECP_EILEVEL 0x80
|
|
#define ECP_EIADDRMASKL 0x00ff0000
|
|
#define ECP_EIADDRSHFTL 16
|
|
#define ECP_EIADDRMASKH 0xff000000
|
|
#define ECP_EIADDRSHFTH 24
|
|
#define ECP_EIBRDENAB 0xc84
|
|
|
|
#define ECP_EISAID 0x4
|
|
|
|
/*
|
|
* Important defines for the Micro-channel class of ECP board.
|
|
* (It has a lot in common with the ISA boards.)
|
|
*/
|
|
#define ECP_MCIREG 0
|
|
#define ECP_MCCONFR 1
|
|
#define ECP_MCSTOP 0x20
|
|
#define ECP_MCENABLE 0x80
|
|
#define ECP_MCDISABLE 0x00
|
|
|
|
/*
|
|
* Important defines for the PCI class of ECP board.
|
|
* (It has a lot in common with the other ECP boards.)
|
|
*/
|
|
#define ECP_PCIIREG 0
|
|
#define ECP_PCICONFR 1
|
|
#define ECP_PCISTOP 0x01
|
|
|
|
/*
|
|
* Hardware configuration info for ONboard and Brumby boards. These
|
|
* defines apply to the directly accessible io ports of these boards.
|
|
*/
|
|
#define ONB_IOSIZE 16
|
|
#define ONB_MEMSIZE (64 * 1024)
|
|
#define ONB_ATPAGESIZE (64 * 1024)
|
|
#define ONB_MCPAGESIZE (64 * 1024)
|
|
#define ONB_EIMEMSIZE (128 * 1024)
|
|
#define ONB_EIPAGESIZE (64 * 1024)
|
|
|
|
/*
|
|
* Important defines for the ISA class of ONboard board.
|
|
*/
|
|
#define ONB_ATIREG 0
|
|
#define ONB_ATMEMAR 1
|
|
#define ONB_ATCONFR 2
|
|
#define ONB_ATSTOP 0x4
|
|
#define ONB_ATENABLE 0x01
|
|
#define ONB_ATDISABLE 0x00
|
|
#define ONB_ATADDRMASK 0xff0000
|
|
#define ONB_ATADDRSHFT 16
|
|
|
|
#define ONB_MEMENABLO 0
|
|
#define ONB_MEMENABHI 0x02
|
|
|
|
/*
|
|
* Important defines for the EISA class of ONboard board.
|
|
*/
|
|
#define ONB_EIIREG 0
|
|
#define ONB_EIMEMARL 1
|
|
#define ONB_EICONFR 2
|
|
#define ONB_EIMEMARH 3
|
|
#define ONB_EIENABLE 0x1
|
|
#define ONB_EIDISABLE 0x0
|
|
#define ONB_EISTOP 0x4
|
|
#define ONB_EIEDGE 0x00
|
|
#define ONB_EILEVEL 0x80
|
|
#define ONB_EIADDRMASKL 0x00ff0000
|
|
#define ONB_EIADDRSHFTL 16
|
|
#define ONB_EIADDRMASKH 0xff000000
|
|
#define ONB_EIADDRSHFTH 24
|
|
#define ONB_EIBRDENAB 0xc84
|
|
|
|
#define ONB_EISAID 0x1
|
|
|
|
/*
|
|
* Important defines for the Brumby boards. They are pretty simple,
|
|
* there is not much that is programmably configurable.
|
|
*/
|
|
#define BBY_IOSIZE 16
|
|
#define BBY_MEMSIZE (64 * 1024)
|
|
#define BBY_PAGESIZE (16 * 1024)
|
|
|
|
#define BBY_ATIREG 0
|
|
#define BBY_ATCONFR 1
|
|
#define BBY_ATSTOP 0x4
|
|
|
|
/*
|
|
* Important defines for the Stallion boards. They are pretty simple,
|
|
* there is not much that is programmably configurable.
|
|
*/
|
|
#define STAL_IOSIZE 16
|
|
#define STAL_MEMSIZE (64 * 1024)
|
|
#define STAL_PAGESIZE (64 * 1024)
|
|
|
|
/*
|
|
* Define the set of status register values for EasyConnection panels.
|
|
* The signature will return with the status value for each panel. From
|
|
* this we can determine what is attached to the board - before we have
|
|
* actually down loaded any code to it.
|
|
*/
|
|
#define ECH_PNLSTATUS 2
|
|
#define ECH_PNL16PORT 0x20
|
|
#define ECH_PNLIDMASK 0x07
|
|
#define ECH_PNLXPID 0x40
|
|
#define ECH_PNLINTRPEND 0x80
|
|
|
|
/*
|
|
* Define some macros to do things to the board. Even those these boards
|
|
* are somewhat related there is often significantly different ways of
|
|
* doing some operation on it (like enable, paging, reset, etc). So each
|
|
* board class has a set of functions which do the commonly required
|
|
* operations. The macros below basically just call these functions,
|
|
* generally checking for a NULL function - which means that the board
|
|
* needs nothing done to it to achieve this operation!
|
|
*/
|
|
#define EBRDINIT(brdp) \
|
|
if (brdp->init != NULL) \
|
|
(* brdp->init)(brdp)
|
|
|
|
#define EBRDENABLE(brdp) \
|
|
if (brdp->enable != NULL) \
|
|
(* brdp->enable)(brdp);
|
|
|
|
#define EBRDDISABLE(brdp) \
|
|
if (brdp->disable != NULL) \
|
|
(* brdp->disable)(brdp);
|
|
|
|
#define EBRDINTR(brdp) \
|
|
if (brdp->intr != NULL) \
|
|
(* brdp->intr)(brdp);
|
|
|
|
#define EBRDRESET(brdp) \
|
|
if (brdp->reset != NULL) \
|
|
(* brdp->reset)(brdp);
|
|
|
|
#define EBRDGETMEMPTR(brdp,offset) \
|
|
(* brdp->getmemptr)(brdp, offset, __LINE__)
|
|
|
|
/*
|
|
* Define the maximal baud rate, and the default baud base for ports.
|
|
*/
|
|
#define STL_MAXBAUD 460800
|
|
#define STL_BAUDBASE 115200
|
|
#define STL_CLOSEDELAY (5 * HZ / 10)
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define macros to extract a brd or port number from a minor number.
|
|
*/
|
|
#define MINOR2BRD(min) (((min) & 0xc0) >> 6)
|
|
#define MINOR2PORT(min) ((min) & 0x3f)
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Prototype all functions in this driver!
|
|
*/
|
|
|
|
static int stli_parsebrd(struct stlconf *confp, char **argp);
|
|
static int stli_open(struct tty_struct *tty, struct file *filp);
|
|
static void stli_close(struct tty_struct *tty, struct file *filp);
|
|
static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count);
|
|
static void stli_putchar(struct tty_struct *tty, unsigned char ch);
|
|
static void stli_flushchars(struct tty_struct *tty);
|
|
static int stli_writeroom(struct tty_struct *tty);
|
|
static int stli_charsinbuffer(struct tty_struct *tty);
|
|
static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
|
|
static void stli_settermios(struct tty_struct *tty, struct ktermios *old);
|
|
static void stli_throttle(struct tty_struct *tty);
|
|
static void stli_unthrottle(struct tty_struct *tty);
|
|
static void stli_stop(struct tty_struct *tty);
|
|
static void stli_start(struct tty_struct *tty);
|
|
static void stli_flushbuffer(struct tty_struct *tty);
|
|
static void stli_breakctl(struct tty_struct *tty, int state);
|
|
static void stli_waituntilsent(struct tty_struct *tty, int timeout);
|
|
static void stli_sendxchar(struct tty_struct *tty, char ch);
|
|
static void stli_hangup(struct tty_struct *tty);
|
|
static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
|
|
|
|
static int stli_brdinit(struct stlibrd *brdp);
|
|
static int stli_startbrd(struct stlibrd *brdp);
|
|
static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
|
|
static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
|
|
static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
|
|
static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
|
|
static void stli_poll(unsigned long arg);
|
|
static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
|
|
static int stli_initopen(struct stlibrd *brdp, struct stliport *portp);
|
|
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
|
|
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
|
|
static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp);
|
|
static void stli_dohangup(struct work_struct *);
|
|
static int stli_setport(struct stliport *portp);
|
|
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
|
|
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
|
|
static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
|
|
static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp);
|
|
static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp);
|
|
static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts);
|
|
static long stli_mktiocm(unsigned long sigvalue);
|
|
static void stli_read(struct stlibrd *brdp, struct stliport *portp);
|
|
static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp);
|
|
static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp);
|
|
static int stli_getbrdstats(combrd_t __user *bp);
|
|
static int stli_getportstats(struct stliport *portp, comstats_t __user *cp);
|
|
static int stli_portcmdstats(struct stliport *portp);
|
|
static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp);
|
|
static int stli_getportstruct(struct stliport __user *arg);
|
|
static int stli_getbrdstruct(struct stlibrd __user *arg);
|
|
static struct stlibrd *stli_allocbrd(void);
|
|
|
|
static void stli_ecpinit(struct stlibrd *brdp);
|
|
static void stli_ecpenable(struct stlibrd *brdp);
|
|
static void stli_ecpdisable(struct stlibrd *brdp);
|
|
static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_ecpreset(struct stlibrd *brdp);
|
|
static void stli_ecpintr(struct stlibrd *brdp);
|
|
static void stli_ecpeiinit(struct stlibrd *brdp);
|
|
static void stli_ecpeienable(struct stlibrd *brdp);
|
|
static void stli_ecpeidisable(struct stlibrd *brdp);
|
|
static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_ecpeireset(struct stlibrd *brdp);
|
|
static void stli_ecpmcenable(struct stlibrd *brdp);
|
|
static void stli_ecpmcdisable(struct stlibrd *brdp);
|
|
static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_ecpmcreset(struct stlibrd *brdp);
|
|
static void stli_ecppciinit(struct stlibrd *brdp);
|
|
static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_ecppcireset(struct stlibrd *brdp);
|
|
|
|
static void stli_onbinit(struct stlibrd *brdp);
|
|
static void stli_onbenable(struct stlibrd *brdp);
|
|
static void stli_onbdisable(struct stlibrd *brdp);
|
|
static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_onbreset(struct stlibrd *brdp);
|
|
static void stli_onbeinit(struct stlibrd *brdp);
|
|
static void stli_onbeenable(struct stlibrd *brdp);
|
|
static void stli_onbedisable(struct stlibrd *brdp);
|
|
static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_onbereset(struct stlibrd *brdp);
|
|
static void stli_bbyinit(struct stlibrd *brdp);
|
|
static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_bbyreset(struct stlibrd *brdp);
|
|
static void stli_stalinit(struct stlibrd *brdp);
|
|
static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line);
|
|
static void stli_stalreset(struct stlibrd *brdp);
|
|
|
|
static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr);
|
|
|
|
static int stli_initecp(struct stlibrd *brdp);
|
|
static int stli_initonb(struct stlibrd *brdp);
|
|
#if STLI_EISAPROBE != 0
|
|
static int stli_eisamemprobe(struct stlibrd *brdp);
|
|
#endif
|
|
static int stli_initports(struct stlibrd *brdp);
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define the driver info for a user level shared memory device. This
|
|
* device will work sort of like the /dev/kmem device - except that it
|
|
* will give access to the shared memory on the Stallion intelligent
|
|
* board. This is also a very useful debugging tool.
|
|
*/
|
|
static const struct file_operations stli_fsiomem = {
|
|
.owner = THIS_MODULE,
|
|
.read = stli_memread,
|
|
.write = stli_memwrite,
|
|
.ioctl = stli_memioctl,
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Define a timer_list entry for our poll routine. The slave board
|
|
* is polled every so often to see if anything needs doing. This is
|
|
* much cheaper on host cpu than using interrupts. It turns out to
|
|
* not increase character latency by much either...
|
|
*/
|
|
static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0);
|
|
|
|
static int stli_timeron;
|
|
|
|
/*
|
|
* Define the calculation for the timeout routine.
|
|
*/
|
|
#define STLI_TIMEOUT (jiffies + 1)
|
|
|
|
/*****************************************************************************/
|
|
|
|
static struct class *istallion_class;
|
|
|
|
static void stli_cleanup_ports(struct stlibrd *brdp)
|
|
{
|
|
struct stliport *portp;
|
|
unsigned int j;
|
|
|
|
for (j = 0; j < STL_MAXPORTS; j++) {
|
|
portp = brdp->ports[j];
|
|
if (portp != NULL) {
|
|
if (portp->tty != NULL)
|
|
tty_hangup(portp->tty);
|
|
kfree(portp);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Parse the supplied argument string, into the board conf struct.
|
|
*/
|
|
|
|
static int stli_parsebrd(struct stlconf *confp, char **argp)
|
|
{
|
|
unsigned int i;
|
|
char *sp;
|
|
|
|
if (argp[0] == NULL || *argp[0] == 0)
|
|
return 0;
|
|
|
|
for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
|
|
*sp = tolower(*sp);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) {
|
|
if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
|
|
break;
|
|
}
|
|
if (i == ARRAY_SIZE(stli_brdstr)) {
|
|
printk("STALLION: unknown board name, %s?\n", argp[0]);
|
|
return 0;
|
|
}
|
|
|
|
confp->brdtype = stli_brdstr[i].type;
|
|
if (argp[1] != NULL && *argp[1] != 0)
|
|
confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0);
|
|
if (argp[2] != NULL && *argp[2] != 0)
|
|
confp->memaddr = simple_strtoul(argp[2], NULL, 0);
|
|
return(1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int stli_open(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct stlibrd *brdp;
|
|
struct stliport *portp;
|
|
unsigned int minordev, brdnr, portnr;
|
|
int rc;
|
|
|
|
minordev = tty->index;
|
|
brdnr = MINOR2BRD(minordev);
|
|
if (brdnr >= stli_nrbrds)
|
|
return -ENODEV;
|
|
brdp = stli_brds[brdnr];
|
|
if (brdp == NULL)
|
|
return -ENODEV;
|
|
if ((brdp->state & BST_STARTED) == 0)
|
|
return -ENODEV;
|
|
portnr = MINOR2PORT(minordev);
|
|
if (portnr > brdp->nrports)
|
|
return -ENODEV;
|
|
|
|
portp = brdp->ports[portnr];
|
|
if (portp == NULL)
|
|
return -ENODEV;
|
|
if (portp->devnr < 1)
|
|
return -ENODEV;
|
|
|
|
|
|
/*
|
|
* Check if this port is in the middle of closing. If so then wait
|
|
* until it is closed then return error status based on flag settings.
|
|
* The sleep here does not need interrupt protection since the wakeup
|
|
* for it is done with the same context.
|
|
*/
|
|
if (portp->flags & ASYNC_CLOSING) {
|
|
interruptible_sleep_on(&portp->close_wait);
|
|
if (portp->flags & ASYNC_HUP_NOTIFY)
|
|
return -EAGAIN;
|
|
return -ERESTARTSYS;
|
|
}
|
|
|
|
/*
|
|
* On the first open of the device setup the port hardware, and
|
|
* initialize the per port data structure. Since initializing the port
|
|
* requires several commands to the board we will need to wait for any
|
|
* other open that is already initializing the port.
|
|
*/
|
|
portp->tty = tty;
|
|
tty->driver_data = portp;
|
|
portp->refcount++;
|
|
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_INITIALIZING, &portp->state));
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
|
|
if ((portp->flags & ASYNC_INITIALIZED) == 0) {
|
|
set_bit(ST_INITIALIZING, &portp->state);
|
|
if ((rc = stli_initopen(brdp, portp)) >= 0) {
|
|
portp->flags |= ASYNC_INITIALIZED;
|
|
clear_bit(TTY_IO_ERROR, &tty->flags);
|
|
}
|
|
clear_bit(ST_INITIALIZING, &portp->state);
|
|
wake_up_interruptible(&portp->raw_wait);
|
|
if (rc < 0)
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Check if this port is in the middle of closing. If so then wait
|
|
* until it is closed then return error status, based on flag settings.
|
|
* The sleep here does not need interrupt protection since the wakeup
|
|
* for it is done with the same context.
|
|
*/
|
|
if (portp->flags & ASYNC_CLOSING) {
|
|
interruptible_sleep_on(&portp->close_wait);
|
|
if (portp->flags & ASYNC_HUP_NOTIFY)
|
|
return -EAGAIN;
|
|
return -ERESTARTSYS;
|
|
}
|
|
|
|
/*
|
|
* Based on type of open being done check if it can overlap with any
|
|
* previous opens still in effect. If we are a normal serial device
|
|
* then also we might have to wait for carrier.
|
|
*/
|
|
if (!(filp->f_flags & O_NONBLOCK)) {
|
|
if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0)
|
|
return rc;
|
|
}
|
|
portp->flags |= ASYNC_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_close(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct stlibrd *brdp;
|
|
struct stliport *portp;
|
|
unsigned long flags;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
|
|
spin_lock_irqsave(&stli_lock, flags);
|
|
if (tty_hung_up_p(filp)) {
|
|
spin_unlock_irqrestore(&stli_lock, flags);
|
|
return;
|
|
}
|
|
if ((tty->count == 1) && (portp->refcount != 1))
|
|
portp->refcount = 1;
|
|
if (portp->refcount-- > 1) {
|
|
spin_unlock_irqrestore(&stli_lock, flags);
|
|
return;
|
|
}
|
|
|
|
portp->flags |= ASYNC_CLOSING;
|
|
|
|
/*
|
|
* May want to wait for data to drain before closing. The BUSY flag
|
|
* keeps track of whether we are still transmitting or not. It is
|
|
* updated by messages from the slave - indicating when all chars
|
|
* really have drained.
|
|
*/
|
|
if (tty == stli_txcooktty)
|
|
stli_flushchars(tty);
|
|
tty->closing = 1;
|
|
spin_unlock_irqrestore(&stli_lock, flags);
|
|
|
|
if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
|
tty_wait_until_sent(tty, portp->closing_wait);
|
|
|
|
portp->flags &= ~ASYNC_INITIALIZED;
|
|
brdp = stli_brds[portp->brdnr];
|
|
stli_rawclose(brdp, portp, 0, 0);
|
|
if (tty->termios->c_cflag & HUPCL) {
|
|
stli_mkasysigs(&portp->asig, 0, 0);
|
|
if (test_bit(ST_CMDING, &portp->state))
|
|
set_bit(ST_DOSIGS, &portp->state);
|
|
else
|
|
stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
|
|
sizeof(asysigs_t), 0);
|
|
}
|
|
clear_bit(ST_TXBUSY, &portp->state);
|
|
clear_bit(ST_RXSTOP, &portp->state);
|
|
set_bit(TTY_IO_ERROR, &tty->flags);
|
|
if (tty->ldisc.flush_buffer)
|
|
(tty->ldisc.flush_buffer)(tty);
|
|
set_bit(ST_DOFLUSHRX, &portp->state);
|
|
stli_flushbuffer(tty);
|
|
|
|
tty->closing = 0;
|
|
portp->tty = NULL;
|
|
|
|
if (portp->openwaitcnt) {
|
|
if (portp->close_delay)
|
|
msleep_interruptible(jiffies_to_msecs(portp->close_delay));
|
|
wake_up_interruptible(&portp->open_wait);
|
|
}
|
|
|
|
portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
|
|
wake_up_interruptible(&portp->close_wait);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Carry out first open operations on a port. This involves a number of
|
|
* commands to be sent to the slave. We need to open the port, set the
|
|
* notification events, set the initial port settings, get and set the
|
|
* initial signal values. We sleep and wait in between each one. But
|
|
* this still all happens pretty quickly.
|
|
*/
|
|
|
|
static int stli_initopen(struct stlibrd *brdp, struct stliport *portp)
|
|
{
|
|
struct tty_struct *tty;
|
|
asynotify_t nt;
|
|
asyport_t aport;
|
|
int rc;
|
|
|
|
if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0)
|
|
return rc;
|
|
|
|
memset(&nt, 0, sizeof(asynotify_t));
|
|
nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
|
|
nt.signal = SG_DCD;
|
|
if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt,
|
|
sizeof(asynotify_t), 0)) < 0)
|
|
return rc;
|
|
|
|
tty = portp->tty;
|
|
if (tty == NULL)
|
|
return -ENODEV;
|
|
stli_mkasyport(portp, &aport, tty->termios);
|
|
if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport,
|
|
sizeof(asyport_t), 0)) < 0)
|
|
return rc;
|
|
|
|
set_bit(ST_GETSIGS, &portp->state);
|
|
if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig,
|
|
sizeof(asysigs_t), 1)) < 0)
|
|
return rc;
|
|
if (test_and_clear_bit(ST_GETSIGS, &portp->state))
|
|
portp->sigs = stli_mktiocm(portp->asig.sigvalue);
|
|
stli_mkasysigs(&portp->asig, 1, 1);
|
|
if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
|
|
sizeof(asysigs_t), 0)) < 0)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Send an open message to the slave. This will sleep waiting for the
|
|
* acknowledgement, so must have user context. We need to co-ordinate
|
|
* with close events here, since we don't want open and close events
|
|
* to overlap.
|
|
*/
|
|
|
|
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
|
|
{
|
|
cdkhdr_t __iomem *hdrp;
|
|
cdkctrl_t __iomem *cp;
|
|
unsigned char __iomem *bits;
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
/*
|
|
* Send a message to the slave to open this port.
|
|
*/
|
|
|
|
/*
|
|
* Slave is already closing this port. This can happen if a hangup
|
|
* occurs on this port. So we must wait until it is complete. The
|
|
* order of opens and closes may not be preserved across shared
|
|
* memory, so we must wait until it is complete.
|
|
*/
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_CLOSING, &portp->state));
|
|
if (signal_pending(current)) {
|
|
return -ERESTARTSYS;
|
|
}
|
|
|
|
/*
|
|
* Everything is ready now, so write the open message into shared
|
|
* memory. Once the message is in set the service bits to say that
|
|
* this port wants service.
|
|
*/
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
|
|
writel(arg, &cp->openarg);
|
|
writeb(1, &cp->open);
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
|
|
portp->portidx;
|
|
writeb(readb(bits) | portp->portbit, bits);
|
|
EBRDDISABLE(brdp);
|
|
|
|
if (wait == 0) {
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Slave is in action, so now we must wait for the open acknowledgment
|
|
* to come back.
|
|
*/
|
|
rc = 0;
|
|
set_bit(ST_OPENING, &portp->state);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_OPENING, &portp->state));
|
|
if (signal_pending(current))
|
|
rc = -ERESTARTSYS;
|
|
|
|
if ((rc == 0) && (portp->rc != 0))
|
|
rc = -EIO;
|
|
return rc;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Send a close message to the slave. Normally this will sleep waiting
|
|
* for the acknowledgement, but if wait parameter is 0 it will not. If
|
|
* wait is true then must have user context (to sleep).
|
|
*/
|
|
|
|
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait)
|
|
{
|
|
cdkhdr_t __iomem *hdrp;
|
|
cdkctrl_t __iomem *cp;
|
|
unsigned char __iomem *bits;
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
/*
|
|
* Slave is already closing this port. This can happen if a hangup
|
|
* occurs on this port.
|
|
*/
|
|
if (wait) {
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_CLOSING, &portp->state));
|
|
if (signal_pending(current)) {
|
|
return -ERESTARTSYS;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Write the close command into shared memory.
|
|
*/
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
|
|
writel(arg, &cp->closearg);
|
|
writeb(1, &cp->close);
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
|
|
portp->portidx;
|
|
writeb(readb(bits) |portp->portbit, bits);
|
|
EBRDDISABLE(brdp);
|
|
|
|
set_bit(ST_CLOSING, &portp->state);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
if (wait == 0)
|
|
return 0;
|
|
|
|
/*
|
|
* Slave is in action, so now we must wait for the open acknowledgment
|
|
* to come back.
|
|
*/
|
|
rc = 0;
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_CLOSING, &portp->state));
|
|
if (signal_pending(current))
|
|
rc = -ERESTARTSYS;
|
|
|
|
if ((rc == 0) && (portp->rc != 0))
|
|
rc = -EIO;
|
|
return rc;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Send a command to the slave and wait for the response. This must
|
|
* have user context (it sleeps). This routine is generic in that it
|
|
* can send any type of command. Its purpose is to wait for that command
|
|
* to complete (as opposed to initiating the command then returning).
|
|
*/
|
|
|
|
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
|
|
{
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_CMDING, &portp->state));
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
|
|
stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
|
|
|
|
wait_event_interruptible(portp->raw_wait,
|
|
!test_bit(ST_CMDING, &portp->state));
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
|
|
if (portp->rc != 0)
|
|
return -EIO;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Send the termios settings for this port to the slave. This sleeps
|
|
* waiting for the command to complete - so must have user context.
|
|
*/
|
|
|
|
static int stli_setport(struct stliport *portp)
|
|
{
|
|
struct stlibrd *brdp;
|
|
asyport_t aport;
|
|
|
|
if (portp == NULL)
|
|
return -ENODEV;
|
|
if (portp->tty == NULL)
|
|
return -ENODEV;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return -ENODEV;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return -ENODEV;
|
|
|
|
stli_mkasyport(portp, &aport, portp->tty->termios);
|
|
return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Possibly need to wait for carrier (DCD signal) to come high. Say
|
|
* maybe because if we are clocal then we don't need to wait...
|
|
*/
|
|
|
|
static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp)
|
|
{
|
|
unsigned long flags;
|
|
int rc, doclocal;
|
|
|
|
rc = 0;
|
|
doclocal = 0;
|
|
|
|
if (portp->tty->termios->c_cflag & CLOCAL)
|
|
doclocal++;
|
|
|
|
spin_lock_irqsave(&stli_lock, flags);
|
|
portp->openwaitcnt++;
|
|
if (! tty_hung_up_p(filp))
|
|
portp->refcount--;
|
|
spin_unlock_irqrestore(&stli_lock, flags);
|
|
|
|
for (;;) {
|
|
stli_mkasysigs(&portp->asig, 1, 1);
|
|
if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
|
|
&portp->asig, sizeof(asysigs_t), 0)) < 0)
|
|
break;
|
|
if (tty_hung_up_p(filp) ||
|
|
((portp->flags & ASYNC_INITIALIZED) == 0)) {
|
|
if (portp->flags & ASYNC_HUP_NOTIFY)
|
|
rc = -EBUSY;
|
|
else
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
if (((portp->flags & ASYNC_CLOSING) == 0) &&
|
|
(doclocal || (portp->sigs & TIOCM_CD))) {
|
|
break;
|
|
}
|
|
if (signal_pending(current)) {
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
interruptible_sleep_on(&portp->open_wait);
|
|
}
|
|
|
|
spin_lock_irqsave(&stli_lock, flags);
|
|
if (! tty_hung_up_p(filp))
|
|
portp->refcount++;
|
|
portp->openwaitcnt--;
|
|
spin_unlock_irqrestore(&stli_lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Write routine. Take the data and put it in the shared memory ring
|
|
* queue. If port is not already sending chars then need to mark the
|
|
* service bits for this port.
|
|
*/
|
|
|
|
static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count)
|
|
{
|
|
cdkasy_t __iomem *ap;
|
|
cdkhdr_t __iomem *hdrp;
|
|
unsigned char __iomem *bits;
|
|
unsigned char __iomem *shbuf;
|
|
unsigned char *chbuf;
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned int len, stlen, head, tail, size;
|
|
unsigned long flags;
|
|
|
|
if (tty == stli_txcooktty)
|
|
stli_flushchars(tty);
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return 0;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return 0;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return 0;
|
|
chbuf = (unsigned char *) buf;
|
|
|
|
/*
|
|
* All data is now local, shove as much as possible into shared memory.
|
|
*/
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
|
|
head = (unsigned int) readw(&ap->txq.head);
|
|
tail = (unsigned int) readw(&ap->txq.tail);
|
|
if (tail != ((unsigned int) readw(&ap->txq.tail)))
|
|
tail = (unsigned int) readw(&ap->txq.tail);
|
|
size = portp->txsize;
|
|
if (head >= tail) {
|
|
len = size - (head - tail) - 1;
|
|
stlen = size - head;
|
|
} else {
|
|
len = tail - head - 1;
|
|
stlen = len;
|
|
}
|
|
|
|
len = min(len, (unsigned int)count);
|
|
count = 0;
|
|
shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset);
|
|
|
|
while (len > 0) {
|
|
stlen = min(len, stlen);
|
|
memcpy_toio(shbuf + head, chbuf, stlen);
|
|
chbuf += stlen;
|
|
len -= stlen;
|
|
count += stlen;
|
|
head += stlen;
|
|
if (head >= size) {
|
|
head = 0;
|
|
stlen = tail;
|
|
}
|
|
}
|
|
|
|
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
|
|
writew(head, &ap->txq.head);
|
|
if (test_bit(ST_TXBUSY, &portp->state)) {
|
|
if (readl(&ap->changed.data) & DT_TXEMPTY)
|
|
writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
|
|
}
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
|
|
portp->portidx;
|
|
writeb(readb(bits) | portp->portbit, bits);
|
|
set_bit(ST_TXBUSY, &portp->state);
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
return(count);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Output a single character. We put it into a temporary local buffer
|
|
* (for speed) then write out that buffer when the flushchars routine
|
|
* is called. There is a safety catch here so that if some other port
|
|
* writes chars before the current buffer has been, then we write them
|
|
* first them do the new ports.
|
|
*/
|
|
|
|
static void stli_putchar(struct tty_struct *tty, unsigned char ch)
|
|
{
|
|
if (tty != stli_txcooktty) {
|
|
if (stli_txcooktty != NULL)
|
|
stli_flushchars(stli_txcooktty);
|
|
stli_txcooktty = tty;
|
|
}
|
|
|
|
stli_txcookbuf[stli_txcooksize++] = ch;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Transfer characters from the local TX cooking buffer to the board.
|
|
* We sort of ignore the tty that gets passed in here. We rely on the
|
|
* info stored with the TX cook buffer to tell us which port to flush
|
|
* the data on. In any case we clean out the TX cook buffer, for re-use
|
|
* by someone else.
|
|
*/
|
|
|
|
static void stli_flushchars(struct tty_struct *tty)
|
|
{
|
|
cdkhdr_t __iomem *hdrp;
|
|
unsigned char __iomem *bits;
|
|
cdkasy_t __iomem *ap;
|
|
struct tty_struct *cooktty;
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned int len, stlen, head, tail, size, count, cooksize;
|
|
unsigned char *buf;
|
|
unsigned char __iomem *shbuf;
|
|
unsigned long flags;
|
|
|
|
cooksize = stli_txcooksize;
|
|
cooktty = stli_txcooktty;
|
|
stli_txcooksize = 0;
|
|
stli_txcookrealsize = 0;
|
|
stli_txcooktty = NULL;
|
|
|
|
if (tty == NULL)
|
|
return;
|
|
if (cooktty == NULL)
|
|
return;
|
|
if (tty != cooktty)
|
|
tty = cooktty;
|
|
if (cooksize == 0)
|
|
return;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
|
|
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
|
|
head = (unsigned int) readw(&ap->txq.head);
|
|
tail = (unsigned int) readw(&ap->txq.tail);
|
|
if (tail != ((unsigned int) readw(&ap->txq.tail)))
|
|
tail = (unsigned int) readw(&ap->txq.tail);
|
|
size = portp->txsize;
|
|
if (head >= tail) {
|
|
len = size - (head - tail) - 1;
|
|
stlen = size - head;
|
|
} else {
|
|
len = tail - head - 1;
|
|
stlen = len;
|
|
}
|
|
|
|
len = min(len, cooksize);
|
|
count = 0;
|
|
shbuf = EBRDGETMEMPTR(brdp, portp->txoffset);
|
|
buf = stli_txcookbuf;
|
|
|
|
while (len > 0) {
|
|
stlen = min(len, stlen);
|
|
memcpy_toio(shbuf + head, buf, stlen);
|
|
buf += stlen;
|
|
len -= stlen;
|
|
count += stlen;
|
|
head += stlen;
|
|
if (head >= size) {
|
|
head = 0;
|
|
stlen = tail;
|
|
}
|
|
}
|
|
|
|
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
|
|
writew(head, &ap->txq.head);
|
|
|
|
if (test_bit(ST_TXBUSY, &portp->state)) {
|
|
if (readl(&ap->changed.data) & DT_TXEMPTY)
|
|
writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data);
|
|
}
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
|
|
portp->portidx;
|
|
writeb(readb(bits) | portp->portbit, bits);
|
|
set_bit(ST_TXBUSY, &portp->state);
|
|
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int stli_writeroom(struct tty_struct *tty)
|
|
{
|
|
cdkasyrq_t __iomem *rp;
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned int head, tail, len;
|
|
unsigned long flags;
|
|
|
|
if (tty == stli_txcooktty) {
|
|
if (stli_txcookrealsize != 0) {
|
|
len = stli_txcookrealsize - stli_txcooksize;
|
|
return len;
|
|
}
|
|
}
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return 0;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return 0;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
|
|
head = (unsigned int) readw(&rp->head);
|
|
tail = (unsigned int) readw(&rp->tail);
|
|
if (tail != ((unsigned int) readw(&rp->tail)))
|
|
tail = (unsigned int) readw(&rp->tail);
|
|
len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head);
|
|
len--;
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
if (tty == stli_txcooktty) {
|
|
stli_txcookrealsize = len;
|
|
len -= stli_txcooksize;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Return the number of characters in the transmit buffer. Normally we
|
|
* will return the number of chars in the shared memory ring queue.
|
|
* We need to kludge around the case where the shared memory buffer is
|
|
* empty but not all characters have drained yet, for this case just
|
|
* return that there is 1 character in the buffer!
|
|
*/
|
|
|
|
static int stli_charsinbuffer(struct tty_struct *tty)
|
|
{
|
|
cdkasyrq_t __iomem *rp;
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned int head, tail, len;
|
|
unsigned long flags;
|
|
|
|
if (tty == stli_txcooktty)
|
|
stli_flushchars(tty);
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return 0;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return 0;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq;
|
|
head = (unsigned int) readw(&rp->head);
|
|
tail = (unsigned int) readw(&rp->tail);
|
|
if (tail != ((unsigned int) readw(&rp->tail)))
|
|
tail = (unsigned int) readw(&rp->tail);
|
|
len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head));
|
|
if ((len == 0) && test_bit(ST_TXBUSY, &portp->state))
|
|
len = 1;
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
return len;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Generate the serial struct info.
|
|
*/
|
|
|
|
static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp)
|
|
{
|
|
struct serial_struct sio;
|
|
struct stlibrd *brdp;
|
|
|
|
memset(&sio, 0, sizeof(struct serial_struct));
|
|
sio.type = PORT_UNKNOWN;
|
|
sio.line = portp->portnr;
|
|
sio.irq = 0;
|
|
sio.flags = portp->flags;
|
|
sio.baud_base = portp->baud_base;
|
|
sio.close_delay = portp->close_delay;
|
|
sio.closing_wait = portp->closing_wait;
|
|
sio.custom_divisor = portp->custom_divisor;
|
|
sio.xmit_fifo_size = 0;
|
|
sio.hub6 = 0;
|
|
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp != NULL)
|
|
sio.port = brdp->iobase;
|
|
|
|
return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ?
|
|
-EFAULT : 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Set port according to the serial struct info.
|
|
* At this point we do not do any auto-configure stuff, so we will
|
|
* just quietly ignore any requests to change irq, etc.
|
|
*/
|
|
|
|
static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp)
|
|
{
|
|
struct serial_struct sio;
|
|
int rc;
|
|
|
|
if (copy_from_user(&sio, sp, sizeof(struct serial_struct)))
|
|
return -EFAULT;
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
|
if ((sio.baud_base != portp->baud_base) ||
|
|
(sio.close_delay != portp->close_delay) ||
|
|
((sio.flags & ~ASYNC_USR_MASK) !=
|
|
(portp->flags & ~ASYNC_USR_MASK)))
|
|
return -EPERM;
|
|
}
|
|
|
|
portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
|
|
(sio.flags & ASYNC_USR_MASK);
|
|
portp->baud_base = sio.baud_base;
|
|
portp->close_delay = sio.close_delay;
|
|
portp->closing_wait = sio.closing_wait;
|
|
portp->custom_divisor = sio.custom_divisor;
|
|
|
|
if ((rc = stli_setport(portp)) < 0)
|
|
return rc;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static int stli_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
struct stliport *portp = tty->driver_data;
|
|
struct stlibrd *brdp;
|
|
int rc;
|
|
|
|
if (portp == NULL)
|
|
return -ENODEV;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return 0;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return 0;
|
|
if (tty->flags & (1 << TTY_IO_ERROR))
|
|
return -EIO;
|
|
|
|
if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS,
|
|
&portp->asig, sizeof(asysigs_t), 1)) < 0)
|
|
return rc;
|
|
|
|
return stli_mktiocm(portp->asig.sigvalue);
|
|
}
|
|
|
|
static int stli_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct stliport *portp = tty->driver_data;
|
|
struct stlibrd *brdp;
|
|
int rts = -1, dtr = -1;
|
|
|
|
if (portp == NULL)
|
|
return -ENODEV;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return 0;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return 0;
|
|
if (tty->flags & (1 << TTY_IO_ERROR))
|
|
return -EIO;
|
|
|
|
if (set & TIOCM_RTS)
|
|
rts = 1;
|
|
if (set & TIOCM_DTR)
|
|
dtr = 1;
|
|
if (clear & TIOCM_RTS)
|
|
rts = 0;
|
|
if (clear & TIOCM_DTR)
|
|
dtr = 0;
|
|
|
|
stli_mkasysigs(&portp->asig, dtr, rts);
|
|
|
|
return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
|
|
sizeof(asysigs_t), 0);
|
|
}
|
|
|
|
static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned int ival;
|
|
int rc;
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return -ENODEV;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return 0;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return 0;
|
|
|
|
if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
|
|
(cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
|
|
if (tty->flags & (1 << TTY_IO_ERROR))
|
|
return -EIO;
|
|
}
|
|
|
|
rc = 0;
|
|
|
|
switch (cmd) {
|
|
case TIOCGSOFTCAR:
|
|
rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0),
|
|
(unsigned __user *) arg);
|
|
break;
|
|
case TIOCSSOFTCAR:
|
|
if ((rc = get_user(ival, (unsigned __user *) arg)) == 0)
|
|
tty->termios->c_cflag =
|
|
(tty->termios->c_cflag & ~CLOCAL) |
|
|
(ival ? CLOCAL : 0);
|
|
break;
|
|
case TIOCGSERIAL:
|
|
rc = stli_getserial(portp, argp);
|
|
break;
|
|
case TIOCSSERIAL:
|
|
rc = stli_setserial(portp, argp);
|
|
break;
|
|
case STL_GETPFLAG:
|
|
rc = put_user(portp->pflag, (unsigned __user *)argp);
|
|
break;
|
|
case STL_SETPFLAG:
|
|
if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0)
|
|
stli_setport(portp);
|
|
break;
|
|
case COM_GETPORTSTATS:
|
|
rc = stli_getportstats(portp, argp);
|
|
break;
|
|
case COM_CLRPORTSTATS:
|
|
rc = stli_clrportstats(portp, argp);
|
|
break;
|
|
case TIOCSERCONFIG:
|
|
case TIOCSERGWILD:
|
|
case TIOCSERSWILD:
|
|
case TIOCSERGETLSR:
|
|
case TIOCSERGSTRUCT:
|
|
case TIOCSERGETMULTI:
|
|
case TIOCSERSETMULTI:
|
|
default:
|
|
rc = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* This routine assumes that we have user context and can sleep.
|
|
* Looks like it is true for the current ttys implementation..!!
|
|
*/
|
|
|
|
static void stli_settermios(struct tty_struct *tty, struct ktermios *old)
|
|
{
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
struct ktermios *tiosp;
|
|
asyport_t aport;
|
|
|
|
if (tty == NULL)
|
|
return;
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return;
|
|
|
|
tiosp = tty->termios;
|
|
|
|
stli_mkasyport(portp, &aport, tiosp);
|
|
stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0);
|
|
stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1);
|
|
stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
|
|
sizeof(asysigs_t), 0);
|
|
if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0))
|
|
tty->hw_stopped = 0;
|
|
if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL))
|
|
wake_up_interruptible(&portp->open_wait);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Attempt to flow control who ever is sending us data. We won't really
|
|
* do any flow control action here. We can't directly, and even if we
|
|
* wanted to we would have to send a command to the slave. The slave
|
|
* knows how to flow control, and will do so when its buffers reach its
|
|
* internal high water marks. So what we will do is set a local state
|
|
* bit that will stop us sending any RX data up from the poll routine
|
|
* (which is the place where RX data from the slave is handled).
|
|
*/
|
|
|
|
static void stli_throttle(struct tty_struct *tty)
|
|
{
|
|
struct stliport *portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
set_bit(ST_RXSTOP, &portp->state);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Unflow control the device sending us data... That means that all
|
|
* we have to do is clear the RXSTOP state bit. The next poll call
|
|
* will then be able to pass the RX data back up.
|
|
*/
|
|
|
|
static void stli_unthrottle(struct tty_struct *tty)
|
|
{
|
|
struct stliport *portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
clear_bit(ST_RXSTOP, &portp->state);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Stop the transmitter.
|
|
*/
|
|
|
|
static void stli_stop(struct tty_struct *tty)
|
|
{
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Start the transmitter again.
|
|
*/
|
|
|
|
static void stli_start(struct tty_struct *tty)
|
|
{
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Scheduler called hang up routine. This is called from the scheduler,
|
|
* not direct from the driver "poll" routine. We can't call it there
|
|
* since the real local hangup code will enable/disable the board and
|
|
* other things that we can't do while handling the poll. Much easier
|
|
* to deal with it some time later (don't really care when, hangups
|
|
* aren't that time critical).
|
|
*/
|
|
|
|
static void stli_dohangup(struct work_struct *ugly_api)
|
|
{
|
|
struct stliport *portp = container_of(ugly_api, struct stliport, tqhangup);
|
|
if (portp->tty != NULL) {
|
|
tty_hangup(portp->tty);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Hangup this port. This is pretty much like closing the port, only
|
|
* a little more brutal. No waiting for data to drain. Shutdown the
|
|
* port and maybe drop signals. This is rather tricky really. We want
|
|
* to close the port as well.
|
|
*/
|
|
|
|
static void stli_hangup(struct tty_struct *tty)
|
|
{
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned long flags;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return;
|
|
|
|
portp->flags &= ~ASYNC_INITIALIZED;
|
|
|
|
if (!test_bit(ST_CLOSING, &portp->state))
|
|
stli_rawclose(brdp, portp, 0, 0);
|
|
|
|
spin_lock_irqsave(&stli_lock, flags);
|
|
if (tty->termios->c_cflag & HUPCL) {
|
|
stli_mkasysigs(&portp->asig, 0, 0);
|
|
if (test_bit(ST_CMDING, &portp->state)) {
|
|
set_bit(ST_DOSIGS, &portp->state);
|
|
set_bit(ST_DOFLUSHTX, &portp->state);
|
|
set_bit(ST_DOFLUSHRX, &portp->state);
|
|
} else {
|
|
stli_sendcmd(brdp, portp, A_SETSIGNALSF,
|
|
&portp->asig, sizeof(asysigs_t), 0);
|
|
}
|
|
}
|
|
|
|
clear_bit(ST_TXBUSY, &portp->state);
|
|
clear_bit(ST_RXSTOP, &portp->state);
|
|
set_bit(TTY_IO_ERROR, &tty->flags);
|
|
portp->tty = NULL;
|
|
portp->flags &= ~ASYNC_NORMAL_ACTIVE;
|
|
portp->refcount = 0;
|
|
spin_unlock_irqrestore(&stli_lock, flags);
|
|
|
|
wake_up_interruptible(&portp->open_wait);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Flush characters from the lower buffer. We may not have user context
|
|
* so we cannot sleep waiting for it to complete. Also we need to check
|
|
* if there is chars for this port in the TX cook buffer, and flush them
|
|
* as well.
|
|
*/
|
|
|
|
static void stli_flushbuffer(struct tty_struct *tty)
|
|
{
|
|
struct stliport *portp;
|
|
struct stlibrd *brdp;
|
|
unsigned long ftype, flags;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
if (tty == stli_txcooktty) {
|
|
stli_txcooktty = NULL;
|
|
stli_txcooksize = 0;
|
|
stli_txcookrealsize = 0;
|
|
}
|
|
if (test_bit(ST_CMDING, &portp->state)) {
|
|
set_bit(ST_DOFLUSHTX, &portp->state);
|
|
} else {
|
|
ftype = FLUSHTX;
|
|
if (test_bit(ST_DOFLUSHRX, &portp->state)) {
|
|
ftype |= FLUSHRX;
|
|
clear_bit(ST_DOFLUSHRX, &portp->state);
|
|
}
|
|
__stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
|
|
}
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
tty_wakeup(tty);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_breakctl(struct tty_struct *tty, int state)
|
|
{
|
|
struct stlibrd *brdp;
|
|
struct stliport *portp;
|
|
long arg;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return;
|
|
|
|
arg = (state == -1) ? BREAKON : BREAKOFF;
|
|
stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_waituntilsent(struct tty_struct *tty, int timeout)
|
|
{
|
|
struct stliport *portp;
|
|
unsigned long tend;
|
|
|
|
if (tty == NULL)
|
|
return;
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
|
|
if (timeout == 0)
|
|
timeout = HZ;
|
|
tend = jiffies + timeout;
|
|
|
|
while (test_bit(ST_TXBUSY, &portp->state)) {
|
|
if (signal_pending(current))
|
|
break;
|
|
msleep_interruptible(20);
|
|
if (time_after_eq(jiffies, tend))
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_sendxchar(struct tty_struct *tty, char ch)
|
|
{
|
|
struct stlibrd *brdp;
|
|
struct stliport *portp;
|
|
asyctrl_t actrl;
|
|
|
|
portp = tty->driver_data;
|
|
if (portp == NULL)
|
|
return;
|
|
if (portp->brdnr >= stli_nrbrds)
|
|
return;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return;
|
|
|
|
memset(&actrl, 0, sizeof(asyctrl_t));
|
|
if (ch == STOP_CHAR(tty)) {
|
|
actrl.rxctrl = CT_STOPFLOW;
|
|
} else if (ch == START_CHAR(tty)) {
|
|
actrl.rxctrl = CT_STARTFLOW;
|
|
} else {
|
|
actrl.txctrl = CT_SENDCHR;
|
|
actrl.tximdch = ch;
|
|
}
|
|
stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define MAXLINE 80
|
|
|
|
/*
|
|
* Format info for a specified port. The line is deliberately limited
|
|
* to 80 characters. (If it is too long it will be truncated, if too
|
|
* short then padded with spaces).
|
|
*/
|
|
|
|
static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
|
|
{
|
|
char *sp, *uart;
|
|
int rc, cnt;
|
|
|
|
rc = stli_portcmdstats(portp);
|
|
|
|
uart = "UNKNOWN";
|
|
if (brdp->state & BST_STARTED) {
|
|
switch (stli_comstats.hwid) {
|
|
case 0: uart = "2681"; break;
|
|
case 1: uart = "SC26198"; break;
|
|
default:uart = "CD1400"; break;
|
|
}
|
|
}
|
|
|
|
sp = pos;
|
|
sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
|
|
|
|
if ((brdp->state & BST_STARTED) && (rc >= 0)) {
|
|
sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
|
|
(int) stli_comstats.rxtotal);
|
|
|
|
if (stli_comstats.rxframing)
|
|
sp += sprintf(sp, " fe:%d",
|
|
(int) stli_comstats.rxframing);
|
|
if (stli_comstats.rxparity)
|
|
sp += sprintf(sp, " pe:%d",
|
|
(int) stli_comstats.rxparity);
|
|
if (stli_comstats.rxbreaks)
|
|
sp += sprintf(sp, " brk:%d",
|
|
(int) stli_comstats.rxbreaks);
|
|
if (stli_comstats.rxoverrun)
|
|
sp += sprintf(sp, " oe:%d",
|
|
(int) stli_comstats.rxoverrun);
|
|
|
|
cnt = sprintf(sp, "%s%s%s%s%s ",
|
|
(stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
|
|
(stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
|
|
(stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
|
|
(stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
|
|
(stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
|
|
*sp = ' ';
|
|
sp += cnt;
|
|
}
|
|
|
|
for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
|
|
*sp++ = ' ';
|
|
if (cnt >= MAXLINE)
|
|
pos[(MAXLINE - 2)] = '+';
|
|
pos[(MAXLINE - 1)] = '\n';
|
|
|
|
return(MAXLINE);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Port info, read from the /proc file system.
|
|
*/
|
|
|
|
static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
|
|
{
|
|
struct stlibrd *brdp;
|
|
struct stliport *portp;
|
|
unsigned int brdnr, portnr, totalport;
|
|
int curoff, maxoff;
|
|
char *pos;
|
|
|
|
pos = page;
|
|
totalport = 0;
|
|
curoff = 0;
|
|
|
|
if (off == 0) {
|
|
pos += sprintf(pos, "%s: version %s", stli_drvtitle,
|
|
stli_drvversion);
|
|
while (pos < (page + MAXLINE - 1))
|
|
*pos++ = ' ';
|
|
*pos++ = '\n';
|
|
}
|
|
curoff = MAXLINE;
|
|
|
|
/*
|
|
* We scan through for each board, panel and port. The offset is
|
|
* calculated on the fly, and irrelevant ports are skipped.
|
|
*/
|
|
for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
|
|
brdp = stli_brds[brdnr];
|
|
if (brdp == NULL)
|
|
continue;
|
|
if (brdp->state == 0)
|
|
continue;
|
|
|
|
maxoff = curoff + (brdp->nrports * MAXLINE);
|
|
if (off >= maxoff) {
|
|
curoff = maxoff;
|
|
continue;
|
|
}
|
|
|
|
totalport = brdnr * STL_MAXPORTS;
|
|
for (portnr = 0; (portnr < brdp->nrports); portnr++,
|
|
totalport++) {
|
|
portp = brdp->ports[portnr];
|
|
if (portp == NULL)
|
|
continue;
|
|
if (off >= (curoff += MAXLINE))
|
|
continue;
|
|
if ((pos - page + MAXLINE) > count)
|
|
goto stli_readdone;
|
|
pos += stli_portinfo(brdp, portp, totalport, pos);
|
|
}
|
|
}
|
|
|
|
*eof = 1;
|
|
|
|
stli_readdone:
|
|
*start = page;
|
|
return(pos - page);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Generic send command routine. This will send a message to the slave,
|
|
* of the specified type with the specified argument. Must be very
|
|
* careful of data that will be copied out from shared memory -
|
|
* containing command results. The command completion is all done from
|
|
* a poll routine that does not have user context. Therefore you cannot
|
|
* copy back directly into user space, or to the kernel stack of a
|
|
* process. This routine does not sleep, so can be called from anywhere.
|
|
*
|
|
* The caller must hold the brd_lock (see also stli_sendcmd the usual
|
|
* entry point)
|
|
*/
|
|
|
|
static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
|
|
{
|
|
cdkhdr_t __iomem *hdrp;
|
|
cdkctrl_t __iomem *cp;
|
|
unsigned char __iomem *bits;
|
|
|
|
if (test_bit(ST_CMDING, &portp->state)) {
|
|
printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
|
|
(int) cmd);
|
|
return;
|
|
}
|
|
|
|
EBRDENABLE(brdp);
|
|
cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
|
|
if (size > 0) {
|
|
memcpy_toio((void __iomem *) &(cp->args[0]), arg, size);
|
|
if (copyback) {
|
|
portp->argp = arg;
|
|
portp->argsize = size;
|
|
}
|
|
}
|
|
writel(0, &cp->status);
|
|
writel(cmd, &cp->cmd);
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset +
|
|
portp->portidx;
|
|
writeb(readb(bits) | portp->portbit, bits);
|
|
set_bit(ST_CMDING, &portp->state);
|
|
EBRDDISABLE(brdp);
|
|
}
|
|
|
|
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
__stli_sendcmd(brdp, portp, cmd, arg, size, copyback);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Read data from shared memory. This assumes that the shared memory
|
|
* is enabled and that interrupts are off. Basically we just empty out
|
|
* the shared memory buffer into the tty buffer. Must be careful to
|
|
* handle the case where we fill up the tty buffer, but still have
|
|
* more chars to unload.
|
|
*/
|
|
|
|
static void stli_read(struct stlibrd *brdp, struct stliport *portp)
|
|
{
|
|
cdkasyrq_t __iomem *rp;
|
|
char __iomem *shbuf;
|
|
struct tty_struct *tty;
|
|
unsigned int head, tail, size;
|
|
unsigned int len, stlen;
|
|
|
|
if (test_bit(ST_RXSTOP, &portp->state))
|
|
return;
|
|
tty = portp->tty;
|
|
if (tty == NULL)
|
|
return;
|
|
|
|
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
|
|
head = (unsigned int) readw(&rp->head);
|
|
if (head != ((unsigned int) readw(&rp->head)))
|
|
head = (unsigned int) readw(&rp->head);
|
|
tail = (unsigned int) readw(&rp->tail);
|
|
size = portp->rxsize;
|
|
if (head >= tail) {
|
|
len = head - tail;
|
|
stlen = len;
|
|
} else {
|
|
len = size - (tail - head);
|
|
stlen = size - tail;
|
|
}
|
|
|
|
len = tty_buffer_request_room(tty, len);
|
|
|
|
shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset);
|
|
|
|
while (len > 0) {
|
|
unsigned char *cptr;
|
|
|
|
stlen = min(len, stlen);
|
|
tty_prepare_flip_string(tty, &cptr, stlen);
|
|
memcpy_fromio(cptr, shbuf + tail, stlen);
|
|
len -= stlen;
|
|
tail += stlen;
|
|
if (tail >= size) {
|
|
tail = 0;
|
|
stlen = head;
|
|
}
|
|
}
|
|
rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
|
|
writew(tail, &rp->tail);
|
|
|
|
if (head != tail)
|
|
set_bit(ST_RXING, &portp->state);
|
|
|
|
tty_schedule_flip(tty);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Set up and carry out any delayed commands. There is only a small set
|
|
* of slave commands that can be done "off-level". So it is not too
|
|
* difficult to deal with them here.
|
|
*/
|
|
|
|
static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp)
|
|
{
|
|
int cmd;
|
|
|
|
if (test_bit(ST_DOSIGS, &portp->state)) {
|
|
if (test_bit(ST_DOFLUSHTX, &portp->state) &&
|
|
test_bit(ST_DOFLUSHRX, &portp->state))
|
|
cmd = A_SETSIGNALSF;
|
|
else if (test_bit(ST_DOFLUSHTX, &portp->state))
|
|
cmd = A_SETSIGNALSFTX;
|
|
else if (test_bit(ST_DOFLUSHRX, &portp->state))
|
|
cmd = A_SETSIGNALSFRX;
|
|
else
|
|
cmd = A_SETSIGNALS;
|
|
clear_bit(ST_DOFLUSHTX, &portp->state);
|
|
clear_bit(ST_DOFLUSHRX, &portp->state);
|
|
clear_bit(ST_DOSIGS, &portp->state);
|
|
memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig,
|
|
sizeof(asysigs_t));
|
|
writel(0, &cp->status);
|
|
writel(cmd, &cp->cmd);
|
|
set_bit(ST_CMDING, &portp->state);
|
|
} else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
|
|
test_bit(ST_DOFLUSHRX, &portp->state)) {
|
|
cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
|
|
cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
|
|
clear_bit(ST_DOFLUSHTX, &portp->state);
|
|
clear_bit(ST_DOFLUSHRX, &portp->state);
|
|
memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int));
|
|
writel(0, &cp->status);
|
|
writel(A_FLUSH, &cp->cmd);
|
|
set_bit(ST_CMDING, &portp->state);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Host command service checking. This handles commands or messages
|
|
* coming from the slave to the host. Must have board shared memory
|
|
* enabled and interrupts off when called. Notice that by servicing the
|
|
* read data last we don't need to change the shared memory pointer
|
|
* during processing (which is a slow IO operation).
|
|
* Return value indicates if this port is still awaiting actions from
|
|
* the slave (like open, command, or even TX data being sent). If 0
|
|
* then port is still busy, otherwise no longer busy.
|
|
*/
|
|
|
|
static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp)
|
|
{
|
|
cdkasy_t __iomem *ap;
|
|
cdkctrl_t __iomem *cp;
|
|
struct tty_struct *tty;
|
|
asynotify_t nt;
|
|
unsigned long oldsigs;
|
|
int rc, donerx;
|
|
|
|
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
|
|
cp = &ap->ctrl;
|
|
|
|
/*
|
|
* Check if we are waiting for an open completion message.
|
|
*/
|
|
if (test_bit(ST_OPENING, &portp->state)) {
|
|
rc = readl(&cp->openarg);
|
|
if (readb(&cp->open) == 0 && rc != 0) {
|
|
if (rc > 0)
|
|
rc--;
|
|
writel(0, &cp->openarg);
|
|
portp->rc = rc;
|
|
clear_bit(ST_OPENING, &portp->state);
|
|
wake_up_interruptible(&portp->raw_wait);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check if we are waiting for a close completion message.
|
|
*/
|
|
if (test_bit(ST_CLOSING, &portp->state)) {
|
|
rc = (int) readl(&cp->closearg);
|
|
if (readb(&cp->close) == 0 && rc != 0) {
|
|
if (rc > 0)
|
|
rc--;
|
|
writel(0, &cp->closearg);
|
|
portp->rc = rc;
|
|
clear_bit(ST_CLOSING, &portp->state);
|
|
wake_up_interruptible(&portp->raw_wait);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check if we are waiting for a command completion message. We may
|
|
* need to copy out the command results associated with this command.
|
|
*/
|
|
if (test_bit(ST_CMDING, &portp->state)) {
|
|
rc = readl(&cp->status);
|
|
if (readl(&cp->cmd) == 0 && rc != 0) {
|
|
if (rc > 0)
|
|
rc--;
|
|
if (portp->argp != NULL) {
|
|
memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]),
|
|
portp->argsize);
|
|
portp->argp = NULL;
|
|
}
|
|
writel(0, &cp->status);
|
|
portp->rc = rc;
|
|
clear_bit(ST_CMDING, &portp->state);
|
|
stli_dodelaycmd(portp, cp);
|
|
wake_up_interruptible(&portp->raw_wait);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for any notification messages ready. This includes lots of
|
|
* different types of events - RX chars ready, RX break received,
|
|
* TX data low or empty in the slave, modem signals changed state.
|
|
*/
|
|
donerx = 0;
|
|
|
|
if (ap->notify) {
|
|
nt = ap->changed;
|
|
ap->notify = 0;
|
|
tty = portp->tty;
|
|
|
|
if (nt.signal & SG_DCD) {
|
|
oldsigs = portp->sigs;
|
|
portp->sigs = stli_mktiocm(nt.sigvalue);
|
|
clear_bit(ST_GETSIGS, &portp->state);
|
|
if ((portp->sigs & TIOCM_CD) &&
|
|
((oldsigs & TIOCM_CD) == 0))
|
|
wake_up_interruptible(&portp->open_wait);
|
|
if ((oldsigs & TIOCM_CD) &&
|
|
((portp->sigs & TIOCM_CD) == 0)) {
|
|
if (portp->flags & ASYNC_CHECK_CD) {
|
|
if (tty)
|
|
schedule_work(&portp->tqhangup);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nt.data & DT_TXEMPTY)
|
|
clear_bit(ST_TXBUSY, &portp->state);
|
|
if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
|
|
if (tty != NULL) {
|
|
tty_wakeup(tty);
|
|
EBRDENABLE(brdp);
|
|
}
|
|
}
|
|
|
|
if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
|
|
if (tty != NULL) {
|
|
tty_insert_flip_char(tty, 0, TTY_BREAK);
|
|
if (portp->flags & ASYNC_SAK) {
|
|
do_SAK(tty);
|
|
EBRDENABLE(brdp);
|
|
}
|
|
tty_schedule_flip(tty);
|
|
}
|
|
}
|
|
|
|
if (nt.data & DT_RXBUSY) {
|
|
donerx++;
|
|
stli_read(brdp, portp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* It might seem odd that we are checking for more RX chars here.
|
|
* But, we need to handle the case where the tty buffer was previously
|
|
* filled, but we had more characters to pass up. The slave will not
|
|
* send any more RX notify messages until the RX buffer has been emptied.
|
|
* But it will leave the service bits on (since the buffer is not empty).
|
|
* So from here we can try to process more RX chars.
|
|
*/
|
|
if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
|
|
clear_bit(ST_RXING, &portp->state);
|
|
stli_read(brdp, portp);
|
|
}
|
|
|
|
return((test_bit(ST_OPENING, &portp->state) ||
|
|
test_bit(ST_CLOSING, &portp->state) ||
|
|
test_bit(ST_CMDING, &portp->state) ||
|
|
test_bit(ST_TXBUSY, &portp->state) ||
|
|
test_bit(ST_RXING, &portp->state)) ? 0 : 1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Service all ports on a particular board. Assumes that the boards
|
|
* shared memory is enabled, and that the page pointer is pointed
|
|
* at the cdk header structure.
|
|
*/
|
|
|
|
static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp)
|
|
{
|
|
struct stliport *portp;
|
|
unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
|
|
unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
|
|
unsigned char __iomem *slavep;
|
|
int bitpos, bitat, bitsize;
|
|
int channr, nrdevs, slavebitchange;
|
|
|
|
bitsize = brdp->bitsize;
|
|
nrdevs = brdp->nrdevs;
|
|
|
|
/*
|
|
* Check if slave wants any service. Basically we try to do as
|
|
* little work as possible here. There are 2 levels of service
|
|
* bits. So if there is nothing to do we bail early. We check
|
|
* 8 service bits at a time in the inner loop, so we can bypass
|
|
* the lot if none of them want service.
|
|
*/
|
|
memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset),
|
|
bitsize);
|
|
|
|
memset(&slavebits[0], 0, bitsize);
|
|
slavebitchange = 0;
|
|
|
|
for (bitpos = 0; (bitpos < bitsize); bitpos++) {
|
|
if (hostbits[bitpos] == 0)
|
|
continue;
|
|
channr = bitpos * 8;
|
|
for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
|
|
if (hostbits[bitpos] & bitat) {
|
|
portp = brdp->ports[(channr - 1)];
|
|
if (stli_hostcmd(brdp, portp)) {
|
|
slavebitchange++;
|
|
slavebits[bitpos] |= bitat;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If any of the ports are no longer busy then update them in the
|
|
* slave request bits. We need to do this after, since a host port
|
|
* service may initiate more slave requests.
|
|
*/
|
|
if (slavebitchange) {
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset;
|
|
for (bitpos = 0; (bitpos < bitsize); bitpos++) {
|
|
if (readb(slavebits + bitpos))
|
|
writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Driver poll routine. This routine polls the boards in use and passes
|
|
* messages back up to host when necessary. This is actually very
|
|
* CPU efficient, since we will always have the kernel poll clock, it
|
|
* adds only a few cycles when idle (since board service can be
|
|
* determined very easily), but when loaded generates no interrupts
|
|
* (with their expensive associated context change).
|
|
*/
|
|
|
|
static void stli_poll(unsigned long arg)
|
|
{
|
|
cdkhdr_t __iomem *hdrp;
|
|
struct stlibrd *brdp;
|
|
unsigned int brdnr;
|
|
|
|
mod_timer(&stli_timerlist, STLI_TIMEOUT);
|
|
|
|
/*
|
|
* Check each board and do any servicing required.
|
|
*/
|
|
for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
|
|
brdp = stli_brds[brdnr];
|
|
if (brdp == NULL)
|
|
continue;
|
|
if ((brdp->state & BST_STARTED) == 0)
|
|
continue;
|
|
|
|
spin_lock(&brd_lock);
|
|
EBRDENABLE(brdp);
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
if (readb(&hdrp->hostreq))
|
|
stli_brdpoll(brdp, hdrp);
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock(&brd_lock);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Translate the termios settings into the port setting structure of
|
|
* the slave.
|
|
*/
|
|
|
|
static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp)
|
|
{
|
|
memset(pp, 0, sizeof(asyport_t));
|
|
|
|
/*
|
|
* Start of by setting the baud, char size, parity and stop bit info.
|
|
*/
|
|
pp->baudout = tty_get_baud_rate(portp->tty);
|
|
if ((tiosp->c_cflag & CBAUD) == B38400) {
|
|
if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
|
pp->baudout = 57600;
|
|
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
|
pp->baudout = 115200;
|
|
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
|
|
pp->baudout = 230400;
|
|
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
|
|
pp->baudout = 460800;
|
|
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
|
|
pp->baudout = (portp->baud_base / portp->custom_divisor);
|
|
}
|
|
if (pp->baudout > STL_MAXBAUD)
|
|
pp->baudout = STL_MAXBAUD;
|
|
pp->baudin = pp->baudout;
|
|
|
|
switch (tiosp->c_cflag & CSIZE) {
|
|
case CS5:
|
|
pp->csize = 5;
|
|
break;
|
|
case CS6:
|
|
pp->csize = 6;
|
|
break;
|
|
case CS7:
|
|
pp->csize = 7;
|
|
break;
|
|
default:
|
|
pp->csize = 8;
|
|
break;
|
|
}
|
|
|
|
if (tiosp->c_cflag & CSTOPB)
|
|
pp->stopbs = PT_STOP2;
|
|
else
|
|
pp->stopbs = PT_STOP1;
|
|
|
|
if (tiosp->c_cflag & PARENB) {
|
|
if (tiosp->c_cflag & PARODD)
|
|
pp->parity = PT_ODDPARITY;
|
|
else
|
|
pp->parity = PT_EVENPARITY;
|
|
} else {
|
|
pp->parity = PT_NOPARITY;
|
|
}
|
|
|
|
/*
|
|
* Set up any flow control options enabled.
|
|
*/
|
|
if (tiosp->c_iflag & IXON) {
|
|
pp->flow |= F_IXON;
|
|
if (tiosp->c_iflag & IXANY)
|
|
pp->flow |= F_IXANY;
|
|
}
|
|
if (tiosp->c_cflag & CRTSCTS)
|
|
pp->flow |= (F_RTSFLOW | F_CTSFLOW);
|
|
|
|
pp->startin = tiosp->c_cc[VSTART];
|
|
pp->stopin = tiosp->c_cc[VSTOP];
|
|
pp->startout = tiosp->c_cc[VSTART];
|
|
pp->stopout = tiosp->c_cc[VSTOP];
|
|
|
|
/*
|
|
* Set up the RX char marking mask with those RX error types we must
|
|
* catch. We can get the slave to help us out a little here, it will
|
|
* ignore parity errors and breaks for us, and mark parity errors in
|
|
* the data stream.
|
|
*/
|
|
if (tiosp->c_iflag & IGNPAR)
|
|
pp->iflag |= FI_IGNRXERRS;
|
|
if (tiosp->c_iflag & IGNBRK)
|
|
pp->iflag |= FI_IGNBREAK;
|
|
|
|
portp->rxmarkmsk = 0;
|
|
if (tiosp->c_iflag & (INPCK | PARMRK))
|
|
pp->iflag |= FI_1MARKRXERRS;
|
|
if (tiosp->c_iflag & BRKINT)
|
|
portp->rxmarkmsk |= BRKINT;
|
|
|
|
/*
|
|
* Set up clocal processing as required.
|
|
*/
|
|
if (tiosp->c_cflag & CLOCAL)
|
|
portp->flags &= ~ASYNC_CHECK_CD;
|
|
else
|
|
portp->flags |= ASYNC_CHECK_CD;
|
|
|
|
/*
|
|
* Transfer any persistent flags into the asyport structure.
|
|
*/
|
|
pp->pflag = (portp->pflag & 0xffff);
|
|
pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
|
|
pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
|
|
pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Construct a slave signals structure for setting the DTR and RTS
|
|
* signals as specified.
|
|
*/
|
|
|
|
static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
|
|
{
|
|
memset(sp, 0, sizeof(asysigs_t));
|
|
if (dtr >= 0) {
|
|
sp->signal |= SG_DTR;
|
|
sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
|
|
}
|
|
if (rts >= 0) {
|
|
sp->signal |= SG_RTS;
|
|
sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Convert the signals returned from the slave into a local TIOCM type
|
|
* signals value. We keep them locally in TIOCM format.
|
|
*/
|
|
|
|
static long stli_mktiocm(unsigned long sigvalue)
|
|
{
|
|
long tiocm = 0;
|
|
tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
|
|
tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
|
|
tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
|
|
tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
|
|
tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
|
|
tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
|
|
return(tiocm);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* All panels and ports actually attached have been worked out. All
|
|
* we need to do here is set up the appropriate per port data structures.
|
|
*/
|
|
|
|
static int stli_initports(struct stlibrd *brdp)
|
|
{
|
|
struct stliport *portp;
|
|
unsigned int i, panelnr, panelport;
|
|
|
|
for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
|
|
portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
|
|
if (!portp) {
|
|
printk("STALLION: failed to allocate port structure\n");
|
|
continue;
|
|
}
|
|
|
|
portp->magic = STLI_PORTMAGIC;
|
|
portp->portnr = i;
|
|
portp->brdnr = brdp->brdnr;
|
|
portp->panelnr = panelnr;
|
|
portp->baud_base = STL_BAUDBASE;
|
|
portp->close_delay = STL_CLOSEDELAY;
|
|
portp->closing_wait = 30 * HZ;
|
|
INIT_WORK(&portp->tqhangup, stli_dohangup);
|
|
init_waitqueue_head(&portp->open_wait);
|
|
init_waitqueue_head(&portp->close_wait);
|
|
init_waitqueue_head(&portp->raw_wait);
|
|
panelport++;
|
|
if (panelport >= brdp->panels[panelnr]) {
|
|
panelport = 0;
|
|
panelnr++;
|
|
}
|
|
brdp->ports[i] = portp;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* All the following routines are board specific hardware operations.
|
|
*/
|
|
|
|
static void stli_ecpinit(struct stlibrd *brdp)
|
|
{
|
|
unsigned long memconf;
|
|
|
|
outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
|
|
udelay(10);
|
|
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
|
|
udelay(100);
|
|
|
|
memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
|
|
outb(memconf, (brdp->iobase + ECP_ATMEMAR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpenable(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpdisable(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
unsigned char val;
|
|
|
|
if (offset > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
|
|
"range at line=%d(%d), brd=%d\n",
|
|
(int) offset, line, __LINE__, brdp->brdnr);
|
|
ptr = NULL;
|
|
val = 0;
|
|
} else {
|
|
ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
|
|
val = (unsigned char) (offset / ECP_ATPAGESIZE);
|
|
}
|
|
outb(val, (brdp->iobase + ECP_ATMEMPR));
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpreset(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
|
|
udelay(10);
|
|
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
|
|
udelay(500);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpintr(struct stlibrd *brdp)
|
|
{
|
|
outb(0x1, brdp->iobase);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following set of functions act on ECP EISA boards.
|
|
*/
|
|
|
|
static void stli_ecpeiinit(struct stlibrd *brdp)
|
|
{
|
|
unsigned long memconf;
|
|
|
|
outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
|
|
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
|
|
udelay(10);
|
|
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
|
|
udelay(500);
|
|
|
|
memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
|
|
outb(memconf, (brdp->iobase + ECP_EIMEMARL));
|
|
memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
|
|
outb(memconf, (brdp->iobase + ECP_EIMEMARH));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpeienable(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpeidisable(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
unsigned char val;
|
|
|
|
if (offset > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
|
|
"range at line=%d(%d), brd=%d\n",
|
|
(int) offset, line, __LINE__, brdp->brdnr);
|
|
ptr = NULL;
|
|
val = 0;
|
|
} else {
|
|
ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
|
|
if (offset < ECP_EIPAGESIZE)
|
|
val = ECP_EIENABLE;
|
|
else
|
|
val = ECP_EIENABLE | 0x40;
|
|
}
|
|
outb(val, (brdp->iobase + ECP_EICONFR));
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpeireset(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
|
|
udelay(10);
|
|
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
|
|
udelay(500);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following set of functions act on ECP MCA boards.
|
|
*/
|
|
|
|
static void stli_ecpmcenable(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpmcdisable(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
unsigned char val;
|
|
|
|
if (offset > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
|
|
"range at line=%d(%d), brd=%d\n",
|
|
(int) offset, line, __LINE__, brdp->brdnr);
|
|
ptr = NULL;
|
|
val = 0;
|
|
} else {
|
|
ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
|
|
val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
|
|
}
|
|
outb(val, (brdp->iobase + ECP_MCCONFR));
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecpmcreset(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
|
|
udelay(10);
|
|
outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
|
|
udelay(500);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following set of functions act on ECP PCI boards.
|
|
*/
|
|
|
|
static void stli_ecppciinit(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
|
|
udelay(10);
|
|
outb(0, (brdp->iobase + ECP_PCICONFR));
|
|
udelay(500);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
unsigned char val;
|
|
|
|
if (offset > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
|
|
"range at line=%d(%d), board=%d\n",
|
|
(int) offset, line, __LINE__, brdp->brdnr);
|
|
ptr = NULL;
|
|
val = 0;
|
|
} else {
|
|
ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
|
|
val = (offset / ECP_PCIPAGESIZE) << 1;
|
|
}
|
|
outb(val, (brdp->iobase + ECP_PCICONFR));
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_ecppcireset(struct stlibrd *brdp)
|
|
{
|
|
outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
|
|
udelay(10);
|
|
outb(0, (brdp->iobase + ECP_PCICONFR));
|
|
udelay(500);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following routines act on ONboards.
|
|
*/
|
|
|
|
static void stli_onbinit(struct stlibrd *brdp)
|
|
{
|
|
unsigned long memconf;
|
|
|
|
outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
|
|
udelay(10);
|
|
outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
|
|
mdelay(1000);
|
|
|
|
memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
|
|
outb(memconf, (brdp->iobase + ONB_ATMEMAR));
|
|
outb(0x1, brdp->iobase);
|
|
mdelay(1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_onbenable(struct stlibrd *brdp)
|
|
{
|
|
outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_onbdisable(struct stlibrd *brdp)
|
|
{
|
|
outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
|
|
if (offset > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
|
|
"range at line=%d(%d), brd=%d\n",
|
|
(int) offset, line, __LINE__, brdp->brdnr);
|
|
ptr = NULL;
|
|
} else {
|
|
ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
|
|
}
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_onbreset(struct stlibrd *brdp)
|
|
{
|
|
outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
|
|
udelay(10);
|
|
outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
|
|
mdelay(1000);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following routines act on ONboard EISA.
|
|
*/
|
|
|
|
static void stli_onbeinit(struct stlibrd *brdp)
|
|
{
|
|
unsigned long memconf;
|
|
|
|
outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
|
|
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
|
|
udelay(10);
|
|
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
|
|
mdelay(1000);
|
|
|
|
memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
|
|
outb(memconf, (brdp->iobase + ONB_EIMEMARL));
|
|
memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
|
|
outb(memconf, (brdp->iobase + ONB_EIMEMARH));
|
|
outb(0x1, brdp->iobase);
|
|
mdelay(1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_onbeenable(struct stlibrd *brdp)
|
|
{
|
|
outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_onbedisable(struct stlibrd *brdp)
|
|
{
|
|
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
unsigned char val;
|
|
|
|
if (offset > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
|
|
"range at line=%d(%d), brd=%d\n",
|
|
(int) offset, line, __LINE__, brdp->brdnr);
|
|
ptr = NULL;
|
|
val = 0;
|
|
} else {
|
|
ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
|
|
if (offset < ONB_EIPAGESIZE)
|
|
val = ONB_EIENABLE;
|
|
else
|
|
val = ONB_EIENABLE | 0x40;
|
|
}
|
|
outb(val, (brdp->iobase + ONB_EICONFR));
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_onbereset(struct stlibrd *brdp)
|
|
{
|
|
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
|
|
udelay(10);
|
|
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
|
|
mdelay(1000);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following routines act on Brumby boards.
|
|
*/
|
|
|
|
static void stli_bbyinit(struct stlibrd *brdp)
|
|
{
|
|
outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
|
|
udelay(10);
|
|
outb(0, (brdp->iobase + BBY_ATCONFR));
|
|
mdelay(1000);
|
|
outb(0x1, brdp->iobase);
|
|
mdelay(1);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
void __iomem *ptr;
|
|
unsigned char val;
|
|
|
|
BUG_ON(offset > brdp->memsize);
|
|
|
|
ptr = brdp->membase + (offset % BBY_PAGESIZE);
|
|
val = (unsigned char) (offset / BBY_PAGESIZE);
|
|
outb(val, (brdp->iobase + BBY_ATCONFR));
|
|
return(ptr);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_bbyreset(struct stlibrd *brdp)
|
|
{
|
|
outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
|
|
udelay(10);
|
|
outb(0, (brdp->iobase + BBY_ATCONFR));
|
|
mdelay(1000);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The following routines act on original old Stallion boards.
|
|
*/
|
|
|
|
static void stli_stalinit(struct stlibrd *brdp)
|
|
{
|
|
outb(0x1, brdp->iobase);
|
|
mdelay(1000);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line)
|
|
{
|
|
BUG_ON(offset > brdp->memsize);
|
|
return brdp->membase + (offset % STAL_PAGESIZE);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void stli_stalreset(struct stlibrd *brdp)
|
|
{
|
|
u32 __iomem *vecp;
|
|
|
|
vecp = (u32 __iomem *) (brdp->membase + 0x30);
|
|
writel(0xffff0000, vecp);
|
|
outb(0, brdp->iobase);
|
|
mdelay(1000);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Try to find an ECP board and initialize it. This handles only ECP
|
|
* board types.
|
|
*/
|
|
|
|
static int stli_initecp(struct stlibrd *brdp)
|
|
{
|
|
cdkecpsig_t sig;
|
|
cdkecpsig_t __iomem *sigsp;
|
|
unsigned int status, nxtid;
|
|
char *name;
|
|
int retval, panelnr, nrports;
|
|
|
|
if ((brdp->iobase == 0) || (brdp->memaddr == 0)) {
|
|
retval = -ENODEV;
|
|
goto err;
|
|
}
|
|
|
|
brdp->iosize = ECP_IOSIZE;
|
|
|
|
if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
|
|
retval = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* Based on the specific board type setup the common vars to access
|
|
* and enable shared memory. Set all board specific information now
|
|
* as well.
|
|
*/
|
|
switch (brdp->brdtype) {
|
|
case BRD_ECP:
|
|
brdp->memsize = ECP_MEMSIZE;
|
|
brdp->pagesize = ECP_ATPAGESIZE;
|
|
brdp->init = stli_ecpinit;
|
|
brdp->enable = stli_ecpenable;
|
|
brdp->reenable = stli_ecpenable;
|
|
brdp->disable = stli_ecpdisable;
|
|
brdp->getmemptr = stli_ecpgetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_ecpreset;
|
|
name = "serial(EC8/64)";
|
|
break;
|
|
|
|
case BRD_ECPE:
|
|
brdp->memsize = ECP_MEMSIZE;
|
|
brdp->pagesize = ECP_EIPAGESIZE;
|
|
brdp->init = stli_ecpeiinit;
|
|
brdp->enable = stli_ecpeienable;
|
|
brdp->reenable = stli_ecpeienable;
|
|
brdp->disable = stli_ecpeidisable;
|
|
brdp->getmemptr = stli_ecpeigetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_ecpeireset;
|
|
name = "serial(EC8/64-EI)";
|
|
break;
|
|
|
|
case BRD_ECPMC:
|
|
brdp->memsize = ECP_MEMSIZE;
|
|
brdp->pagesize = ECP_MCPAGESIZE;
|
|
brdp->init = NULL;
|
|
brdp->enable = stli_ecpmcenable;
|
|
brdp->reenable = stli_ecpmcenable;
|
|
brdp->disable = stli_ecpmcdisable;
|
|
brdp->getmemptr = stli_ecpmcgetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_ecpmcreset;
|
|
name = "serial(EC8/64-MCA)";
|
|
break;
|
|
|
|
case BRD_ECPPCI:
|
|
brdp->memsize = ECP_PCIMEMSIZE;
|
|
brdp->pagesize = ECP_PCIPAGESIZE;
|
|
brdp->init = stli_ecppciinit;
|
|
brdp->enable = NULL;
|
|
brdp->reenable = NULL;
|
|
brdp->disable = NULL;
|
|
brdp->getmemptr = stli_ecppcigetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_ecppcireset;
|
|
name = "serial(EC/RA-PCI)";
|
|
break;
|
|
|
|
default:
|
|
retval = -EINVAL;
|
|
goto err_reg;
|
|
}
|
|
|
|
/*
|
|
* The per-board operations structure is all set up, so now let's go
|
|
* and get the board operational. Firstly initialize board configuration
|
|
* registers. Set the memory mapping info so we can get at the boards
|
|
* shared memory.
|
|
*/
|
|
EBRDINIT(brdp);
|
|
|
|
brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
|
|
if (brdp->membase == NULL) {
|
|
retval = -ENOMEM;
|
|
goto err_reg;
|
|
}
|
|
|
|
/*
|
|
* Now that all specific code is set up, enable the shared memory and
|
|
* look for the a signature area that will tell us exactly what board
|
|
* this is, and what it is connected to it.
|
|
*/
|
|
EBRDENABLE(brdp);
|
|
sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
|
|
memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t));
|
|
EBRDDISABLE(brdp);
|
|
|
|
if (sig.magic != cpu_to_le32(ECP_MAGIC)) {
|
|
retval = -ENODEV;
|
|
goto err_unmap;
|
|
}
|
|
|
|
/*
|
|
* Scan through the signature looking at the panels connected to the
|
|
* board. Calculate the total number of ports as we go.
|
|
*/
|
|
for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
|
|
status = sig.panelid[nxtid];
|
|
if ((status & ECH_PNLIDMASK) != nxtid)
|
|
break;
|
|
|
|
brdp->panelids[panelnr] = status;
|
|
nrports = (status & ECH_PNL16PORT) ? 16 : 8;
|
|
if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
|
|
nxtid++;
|
|
brdp->panels[panelnr] = nrports;
|
|
brdp->nrports += nrports;
|
|
nxtid++;
|
|
brdp->nrpanels++;
|
|
}
|
|
|
|
|
|
brdp->state |= BST_FOUND;
|
|
return 0;
|
|
err_unmap:
|
|
iounmap(brdp->membase);
|
|
brdp->membase = NULL;
|
|
err_reg:
|
|
release_region(brdp->iobase, brdp->iosize);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Try to find an ONboard, Brumby or Stallion board and initialize it.
|
|
* This handles only these board types.
|
|
*/
|
|
|
|
static int stli_initonb(struct stlibrd *brdp)
|
|
{
|
|
cdkonbsig_t sig;
|
|
cdkonbsig_t __iomem *sigsp;
|
|
char *name;
|
|
int i, retval;
|
|
|
|
/*
|
|
* Do a basic sanity check on the IO and memory addresses.
|
|
*/
|
|
if (brdp->iobase == 0 || brdp->memaddr == 0) {
|
|
retval = -ENODEV;
|
|
goto err;
|
|
}
|
|
|
|
brdp->iosize = ONB_IOSIZE;
|
|
|
|
if (!request_region(brdp->iobase, brdp->iosize, "istallion")) {
|
|
retval = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* Based on the specific board type setup the common vars to access
|
|
* and enable shared memory. Set all board specific information now
|
|
* as well.
|
|
*/
|
|
switch (brdp->brdtype) {
|
|
case BRD_ONBOARD:
|
|
case BRD_ONBOARD2:
|
|
brdp->memsize = ONB_MEMSIZE;
|
|
brdp->pagesize = ONB_ATPAGESIZE;
|
|
brdp->init = stli_onbinit;
|
|
brdp->enable = stli_onbenable;
|
|
brdp->reenable = stli_onbenable;
|
|
brdp->disable = stli_onbdisable;
|
|
brdp->getmemptr = stli_onbgetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_onbreset;
|
|
if (brdp->memaddr > 0x100000)
|
|
brdp->enabval = ONB_MEMENABHI;
|
|
else
|
|
brdp->enabval = ONB_MEMENABLO;
|
|
name = "serial(ONBoard)";
|
|
break;
|
|
|
|
case BRD_ONBOARDE:
|
|
brdp->memsize = ONB_EIMEMSIZE;
|
|
brdp->pagesize = ONB_EIPAGESIZE;
|
|
brdp->init = stli_onbeinit;
|
|
brdp->enable = stli_onbeenable;
|
|
brdp->reenable = stli_onbeenable;
|
|
brdp->disable = stli_onbedisable;
|
|
brdp->getmemptr = stli_onbegetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_onbereset;
|
|
name = "serial(ONBoard/E)";
|
|
break;
|
|
|
|
case BRD_BRUMBY4:
|
|
brdp->memsize = BBY_MEMSIZE;
|
|
brdp->pagesize = BBY_PAGESIZE;
|
|
brdp->init = stli_bbyinit;
|
|
brdp->enable = NULL;
|
|
brdp->reenable = NULL;
|
|
brdp->disable = NULL;
|
|
brdp->getmemptr = stli_bbygetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_bbyreset;
|
|
name = "serial(Brumby)";
|
|
break;
|
|
|
|
case BRD_STALLION:
|
|
brdp->memsize = STAL_MEMSIZE;
|
|
brdp->pagesize = STAL_PAGESIZE;
|
|
brdp->init = stli_stalinit;
|
|
brdp->enable = NULL;
|
|
brdp->reenable = NULL;
|
|
brdp->disable = NULL;
|
|
brdp->getmemptr = stli_stalgetmemptr;
|
|
brdp->intr = stli_ecpintr;
|
|
brdp->reset = stli_stalreset;
|
|
name = "serial(Stallion)";
|
|
break;
|
|
|
|
default:
|
|
retval = -EINVAL;
|
|
goto err_reg;
|
|
}
|
|
|
|
/*
|
|
* The per-board operations structure is all set up, so now let's go
|
|
* and get the board operational. Firstly initialize board configuration
|
|
* registers. Set the memory mapping info so we can get at the boards
|
|
* shared memory.
|
|
*/
|
|
EBRDINIT(brdp);
|
|
|
|
brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
|
|
if (brdp->membase == NULL) {
|
|
retval = -ENOMEM;
|
|
goto err_reg;
|
|
}
|
|
|
|
/*
|
|
* Now that all specific code is set up, enable the shared memory and
|
|
* look for the a signature area that will tell us exactly what board
|
|
* this is, and how many ports.
|
|
*/
|
|
EBRDENABLE(brdp);
|
|
sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
|
|
memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t));
|
|
EBRDDISABLE(brdp);
|
|
|
|
if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) ||
|
|
sig.magic1 != cpu_to_le16(ONB_MAGIC1) ||
|
|
sig.magic2 != cpu_to_le16(ONB_MAGIC2) ||
|
|
sig.magic3 != cpu_to_le16(ONB_MAGIC3)) {
|
|
retval = -ENODEV;
|
|
goto err_unmap;
|
|
}
|
|
|
|
/*
|
|
* Scan through the signature alive mask and calculate how many ports
|
|
* there are on this board.
|
|
*/
|
|
brdp->nrpanels = 1;
|
|
if (sig.amask1) {
|
|
brdp->nrports = 32;
|
|
} else {
|
|
for (i = 0; (i < 16); i++) {
|
|
if (((sig.amask0 << i) & 0x8000) == 0)
|
|
break;
|
|
}
|
|
brdp->nrports = i;
|
|
}
|
|
brdp->panels[0] = brdp->nrports;
|
|
|
|
|
|
brdp->state |= BST_FOUND;
|
|
return 0;
|
|
err_unmap:
|
|
iounmap(brdp->membase);
|
|
brdp->membase = NULL;
|
|
err_reg:
|
|
release_region(brdp->iobase, brdp->iosize);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Start up a running board. This routine is only called after the
|
|
* code has been down loaded to the board and is operational. It will
|
|
* read in the memory map, and get the show on the road...
|
|
*/
|
|
|
|
static int stli_startbrd(struct stlibrd *brdp)
|
|
{
|
|
cdkhdr_t __iomem *hdrp;
|
|
cdkmem_t __iomem *memp;
|
|
cdkasy_t __iomem *ap;
|
|
unsigned long flags;
|
|
unsigned int portnr, nrdevs, i;
|
|
struct stliport *portp;
|
|
int rc = 0;
|
|
u32 memoff;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
|
|
nrdevs = hdrp->nrdevs;
|
|
|
|
#if 0
|
|
printk("%s(%d): CDK version %d.%d.%d --> "
|
|
"nrdevs=%d memp=%x hostp=%x slavep=%x\n",
|
|
__FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification),
|
|
readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp),
|
|
readl(&hdrp->slavep));
|
|
#endif
|
|
|
|
if (nrdevs < (brdp->nrports + 1)) {
|
|
printk(KERN_ERR "STALLION: slave failed to allocate memory for "
|
|
"all devices, devices=%d\n", nrdevs);
|
|
brdp->nrports = nrdevs - 1;
|
|
}
|
|
brdp->nrdevs = nrdevs;
|
|
brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
|
|
brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
|
|
brdp->bitsize = (nrdevs + 7) / 8;
|
|
memoff = readl(&hdrp->memp);
|
|
if (memoff > brdp->memsize) {
|
|
printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
|
|
rc = -EIO;
|
|
goto stli_donestartup;
|
|
}
|
|
memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
|
|
if (readw(&memp->dtype) != TYP_ASYNCTRL) {
|
|
printk(KERN_ERR "STALLION: no slave control device found\n");
|
|
goto stli_donestartup;
|
|
}
|
|
memp++;
|
|
|
|
/*
|
|
* Cycle through memory allocation of each port. We are guaranteed to
|
|
* have all ports inside the first page of slave window, so no need to
|
|
* change pages while reading memory map.
|
|
*/
|
|
for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
|
|
if (readw(&memp->dtype) != TYP_ASYNC)
|
|
break;
|
|
portp = brdp->ports[portnr];
|
|
if (portp == NULL)
|
|
break;
|
|
portp->devnr = i;
|
|
portp->addr = readl(&memp->offset);
|
|
portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
|
|
portp->portidx = (unsigned char) (i / 8);
|
|
portp->portbit = (unsigned char) (0x1 << (i % 8));
|
|
}
|
|
|
|
writeb(0xff, &hdrp->slavereq);
|
|
|
|
/*
|
|
* For each port setup a local copy of the RX and TX buffer offsets
|
|
* and sizes. We do this separate from the above, because we need to
|
|
* move the shared memory page...
|
|
*/
|
|
for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
|
|
portp = brdp->ports[portnr];
|
|
if (portp == NULL)
|
|
break;
|
|
if (portp->addr == 0)
|
|
break;
|
|
ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr);
|
|
if (ap != NULL) {
|
|
portp->rxsize = readw(&ap->rxq.size);
|
|
portp->txsize = readw(&ap->txq.size);
|
|
portp->rxoffset = readl(&ap->rxq.offset);
|
|
portp->txoffset = readl(&ap->txq.offset);
|
|
}
|
|
}
|
|
|
|
stli_donestartup:
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
if (rc == 0)
|
|
brdp->state |= BST_STARTED;
|
|
|
|
if (! stli_timeron) {
|
|
stli_timeron++;
|
|
mod_timer(&stli_timerlist, STLI_TIMEOUT);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Probe and initialize the specified board.
|
|
*/
|
|
|
|
static int __devinit stli_brdinit(struct stlibrd *brdp)
|
|
{
|
|
int retval;
|
|
|
|
switch (brdp->brdtype) {
|
|
case BRD_ECP:
|
|
case BRD_ECPE:
|
|
case BRD_ECPMC:
|
|
case BRD_ECPPCI:
|
|
retval = stli_initecp(brdp);
|
|
break;
|
|
case BRD_ONBOARD:
|
|
case BRD_ONBOARDE:
|
|
case BRD_ONBOARD2:
|
|
case BRD_BRUMBY4:
|
|
case BRD_STALLION:
|
|
retval = stli_initonb(brdp);
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "STALLION: board=%d is unknown board "
|
|
"type=%d\n", brdp->brdnr, brdp->brdtype);
|
|
retval = -ENODEV;
|
|
}
|
|
|
|
if (retval)
|
|
return retval;
|
|
|
|
stli_initports(brdp);
|
|
printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
|
|
"nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
|
|
brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
|
|
brdp->nrpanels, brdp->nrports);
|
|
return 0;
|
|
}
|
|
|
|
#if STLI_EISAPROBE != 0
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Probe around trying to find where the EISA boards shared memory
|
|
* might be. This is a bit if hack, but it is the best we can do.
|
|
*/
|
|
|
|
static int stli_eisamemprobe(struct stlibrd *brdp)
|
|
{
|
|
cdkecpsig_t ecpsig, __iomem *ecpsigp;
|
|
cdkonbsig_t onbsig, __iomem *onbsigp;
|
|
int i, foundit;
|
|
|
|
/*
|
|
* First up we reset the board, to get it into a known state. There
|
|
* is only 2 board types here we need to worry about. Don;t use the
|
|
* standard board init routine here, it programs up the shared
|
|
* memory address, and we don't know it yet...
|
|
*/
|
|
if (brdp->brdtype == BRD_ECPE) {
|
|
outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
|
|
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
|
|
udelay(10);
|
|
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
|
|
udelay(500);
|
|
stli_ecpeienable(brdp);
|
|
} else if (brdp->brdtype == BRD_ONBOARDE) {
|
|
outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
|
|
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
|
|
udelay(10);
|
|
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
|
|
mdelay(100);
|
|
outb(0x1, brdp->iobase);
|
|
mdelay(1);
|
|
stli_onbeenable(brdp);
|
|
} else {
|
|
return -ENODEV;
|
|
}
|
|
|
|
foundit = 0;
|
|
brdp->memsize = ECP_MEMSIZE;
|
|
|
|
/*
|
|
* Board shared memory is enabled, so now we have a poke around and
|
|
* see if we can find it.
|
|
*/
|
|
for (i = 0; (i < stli_eisamempsize); i++) {
|
|
brdp->memaddr = stli_eisamemprobeaddrs[i];
|
|
brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
|
|
if (brdp->membase == NULL)
|
|
continue;
|
|
|
|
if (brdp->brdtype == BRD_ECPE) {
|
|
ecpsigp = stli_ecpeigetmemptr(brdp,
|
|
CDK_SIGADDR, __LINE__);
|
|
memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
|
|
if (ecpsig.magic == cpu_to_le32(ECP_MAGIC))
|
|
foundit = 1;
|
|
} else {
|
|
onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp,
|
|
CDK_SIGADDR, __LINE__);
|
|
memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t));
|
|
if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) &&
|
|
(onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) &&
|
|
(onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) &&
|
|
(onbsig.magic3 == cpu_to_le16(ONB_MAGIC3)))
|
|
foundit = 1;
|
|
}
|
|
|
|
iounmap(brdp->membase);
|
|
if (foundit)
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Regardless of whether we found the shared memory or not we must
|
|
* disable the region. After that return success or failure.
|
|
*/
|
|
if (brdp->brdtype == BRD_ECPE)
|
|
stli_ecpeidisable(brdp);
|
|
else
|
|
stli_onbedisable(brdp);
|
|
|
|
if (! foundit) {
|
|
brdp->memaddr = 0;
|
|
brdp->membase = NULL;
|
|
printk(KERN_ERR "STALLION: failed to probe shared memory "
|
|
"region for %s in EISA slot=%d\n",
|
|
stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int stli_getbrdnr(void)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < STL_MAXBRDS; i++) {
|
|
if (!stli_brds[i]) {
|
|
if (i >= stli_nrbrds)
|
|
stli_nrbrds = i + 1;
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
#if STLI_EISAPROBE != 0
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Probe around and try to find any EISA boards in system. The biggest
|
|
* problem here is finding out what memory address is associated with
|
|
* an EISA board after it is found. The registers of the ECPE and
|
|
* ONboardE are not readable - so we can't read them from there. We
|
|
* don't have access to the EISA CMOS (or EISA BIOS) so we don't
|
|
* actually have any way to find out the real value. The best we can
|
|
* do is go probing around in the usual places hoping we can find it.
|
|
*/
|
|
|
|
static int stli_findeisabrds(void)
|
|
{
|
|
struct stlibrd *brdp;
|
|
unsigned int iobase, eid, i;
|
|
int brdnr, found = 0;
|
|
|
|
/*
|
|
* Firstly check if this is an EISA system. If this is not an EISA system then
|
|
* don't bother going any further!
|
|
*/
|
|
if (EISA_bus)
|
|
return 0;
|
|
|
|
/*
|
|
* Looks like an EISA system, so go searching for EISA boards.
|
|
*/
|
|
for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
|
|
outb(0xff, (iobase + 0xc80));
|
|
eid = inb(iobase + 0xc80);
|
|
eid |= inb(iobase + 0xc81) << 8;
|
|
if (eid != STL_EISAID)
|
|
continue;
|
|
|
|
/*
|
|
* We have found a board. Need to check if this board was
|
|
* statically configured already (just in case!).
|
|
*/
|
|
for (i = 0; (i < STL_MAXBRDS); i++) {
|
|
brdp = stli_brds[i];
|
|
if (brdp == NULL)
|
|
continue;
|
|
if (brdp->iobase == iobase)
|
|
break;
|
|
}
|
|
if (i < STL_MAXBRDS)
|
|
continue;
|
|
|
|
/*
|
|
* We have found a Stallion board and it is not configured already.
|
|
* Allocate a board structure and initialize it.
|
|
*/
|
|
if ((brdp = stli_allocbrd()) == NULL)
|
|
return found ? : -ENOMEM;
|
|
brdnr = stli_getbrdnr();
|
|
if (brdnr < 0)
|
|
return found ? : -ENOMEM;
|
|
brdp->brdnr = (unsigned int)brdnr;
|
|
eid = inb(iobase + 0xc82);
|
|
if (eid == ECP_EISAID)
|
|
brdp->brdtype = BRD_ECPE;
|
|
else if (eid == ONB_EISAID)
|
|
brdp->brdtype = BRD_ONBOARDE;
|
|
else
|
|
brdp->brdtype = BRD_UNKNOWN;
|
|
brdp->iobase = iobase;
|
|
outb(0x1, (iobase + 0xc84));
|
|
if (stli_eisamemprobe(brdp))
|
|
outb(0, (iobase + 0xc84));
|
|
if (stli_brdinit(brdp) < 0) {
|
|
kfree(brdp);
|
|
continue;
|
|
}
|
|
|
|
stli_brds[brdp->brdnr] = brdp;
|
|
found++;
|
|
|
|
for (i = 0; i < brdp->nrports; i++)
|
|
tty_register_device(stli_serial,
|
|
brdp->brdnr * STL_MAXPORTS + i, NULL);
|
|
}
|
|
|
|
return found;
|
|
}
|
|
#else
|
|
static inline int stli_findeisabrds(void) { return 0; }
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Find the next available board number that is free.
|
|
*/
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* We have a Stallion board. Allocate a board structure and
|
|
* initialize it. Read its IO and MEMORY resources from PCI
|
|
* configuration space.
|
|
*/
|
|
|
|
static int __devinit stli_pciprobe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct stlibrd *brdp;
|
|
unsigned int i;
|
|
int brdnr, retval = -EIO;
|
|
|
|
retval = pci_enable_device(pdev);
|
|
if (retval)
|
|
goto err;
|
|
brdp = stli_allocbrd();
|
|
if (brdp == NULL) {
|
|
retval = -ENOMEM;
|
|
goto err;
|
|
}
|
|
mutex_lock(&stli_brdslock);
|
|
brdnr = stli_getbrdnr();
|
|
if (brdnr < 0) {
|
|
printk(KERN_INFO "STALLION: too many boards found, "
|
|
"maximum supported %d\n", STL_MAXBRDS);
|
|
mutex_unlock(&stli_brdslock);
|
|
retval = -EIO;
|
|
goto err_fr;
|
|
}
|
|
brdp->brdnr = (unsigned int)brdnr;
|
|
stli_brds[brdp->brdnr] = brdp;
|
|
mutex_unlock(&stli_brdslock);
|
|
brdp->brdtype = BRD_ECPPCI;
|
|
/*
|
|
* We have all resources from the board, so lets setup the actual
|
|
* board structure now.
|
|
*/
|
|
brdp->iobase = pci_resource_start(pdev, 3);
|
|
brdp->memaddr = pci_resource_start(pdev, 2);
|
|
retval = stli_brdinit(brdp);
|
|
if (retval)
|
|
goto err_null;
|
|
|
|
brdp->state |= BST_PROBED;
|
|
pci_set_drvdata(pdev, brdp);
|
|
|
|
EBRDENABLE(brdp);
|
|
brdp->enable = NULL;
|
|
brdp->disable = NULL;
|
|
|
|
for (i = 0; i < brdp->nrports; i++)
|
|
tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i,
|
|
&pdev->dev);
|
|
|
|
return 0;
|
|
err_null:
|
|
stli_brds[brdp->brdnr] = NULL;
|
|
err_fr:
|
|
kfree(brdp);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
static void stli_pciremove(struct pci_dev *pdev)
|
|
{
|
|
struct stlibrd *brdp = pci_get_drvdata(pdev);
|
|
|
|
stli_cleanup_ports(brdp);
|
|
|
|
iounmap(brdp->membase);
|
|
if (brdp->iosize > 0)
|
|
release_region(brdp->iobase, brdp->iosize);
|
|
|
|
stli_brds[brdp->brdnr] = NULL;
|
|
kfree(brdp);
|
|
}
|
|
|
|
static struct pci_driver stli_pcidriver = {
|
|
.name = "istallion",
|
|
.id_table = istallion_pci_tbl,
|
|
.probe = stli_pciprobe,
|
|
.remove = __devexit_p(stli_pciremove)
|
|
};
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Allocate a new board structure. Fill out the basic info in it.
|
|
*/
|
|
|
|
static struct stlibrd *stli_allocbrd(void)
|
|
{
|
|
struct stlibrd *brdp;
|
|
|
|
brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
|
|
if (!brdp) {
|
|
printk(KERN_ERR "STALLION: failed to allocate memory "
|
|
"(size=%Zd)\n", sizeof(struct stlibrd));
|
|
return NULL;
|
|
}
|
|
brdp->magic = STLI_BOARDMAGIC;
|
|
return brdp;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Scan through all the boards in the configuration and see what we
|
|
* can find.
|
|
*/
|
|
|
|
static int stli_initbrds(void)
|
|
{
|
|
struct stlibrd *brdp, *nxtbrdp;
|
|
struct stlconf conf;
|
|
unsigned int i, j, found = 0;
|
|
int retval;
|
|
|
|
for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp);
|
|
stli_nrbrds++) {
|
|
memset(&conf, 0, sizeof(conf));
|
|
if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0)
|
|
continue;
|
|
if ((brdp = stli_allocbrd()) == NULL)
|
|
continue;
|
|
brdp->brdnr = stli_nrbrds;
|
|
brdp->brdtype = conf.brdtype;
|
|
brdp->iobase = conf.ioaddr1;
|
|
brdp->memaddr = conf.memaddr;
|
|
if (stli_brdinit(brdp) < 0) {
|
|
kfree(brdp);
|
|
continue;
|
|
}
|
|
stli_brds[brdp->brdnr] = brdp;
|
|
found++;
|
|
|
|
for (i = 0; i < brdp->nrports; i++)
|
|
tty_register_device(stli_serial,
|
|
brdp->brdnr * STL_MAXPORTS + i, NULL);
|
|
}
|
|
|
|
retval = stli_findeisabrds();
|
|
if (retval > 0)
|
|
found += retval;
|
|
|
|
/*
|
|
* All found boards are initialized. Now for a little optimization, if
|
|
* no boards are sharing the "shared memory" regions then we can just
|
|
* leave them all enabled. This is in fact the usual case.
|
|
*/
|
|
stli_shared = 0;
|
|
if (stli_nrbrds > 1) {
|
|
for (i = 0; (i < stli_nrbrds); i++) {
|
|
brdp = stli_brds[i];
|
|
if (brdp == NULL)
|
|
continue;
|
|
for (j = i + 1; (j < stli_nrbrds); j++) {
|
|
nxtbrdp = stli_brds[j];
|
|
if (nxtbrdp == NULL)
|
|
continue;
|
|
if ((brdp->membase >= nxtbrdp->membase) &&
|
|
(brdp->membase <= (nxtbrdp->membase +
|
|
nxtbrdp->memsize - 1))) {
|
|
stli_shared++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (stli_shared == 0) {
|
|
for (i = 0; (i < stli_nrbrds); i++) {
|
|
brdp = stli_brds[i];
|
|
if (brdp == NULL)
|
|
continue;
|
|
if (brdp->state & BST_FOUND) {
|
|
EBRDENABLE(brdp);
|
|
brdp->enable = NULL;
|
|
brdp->disable = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
retval = pci_register_driver(&stli_pcidriver);
|
|
if (retval && found == 0) {
|
|
printk(KERN_ERR "Neither isa nor eisa cards found nor pci "
|
|
"driver can be registered!\n");
|
|
goto err;
|
|
}
|
|
|
|
return 0;
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Code to handle an "staliomem" read operation. This device is the
|
|
* contents of the board shared memory. It is used for down loading
|
|
* the slave image (and debugging :-)
|
|
*/
|
|
|
|
static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp)
|
|
{
|
|
unsigned long flags;
|
|
void __iomem *memptr;
|
|
struct stlibrd *brdp;
|
|
unsigned int brdnr;
|
|
int size, n;
|
|
void *p;
|
|
loff_t off = *offp;
|
|
|
|
brdnr = iminor(fp->f_path.dentry->d_inode);
|
|
if (brdnr >= stli_nrbrds)
|
|
return -ENODEV;
|
|
brdp = stli_brds[brdnr];
|
|
if (brdp == NULL)
|
|
return -ENODEV;
|
|
if (brdp->state == 0)
|
|
return -ENODEV;
|
|
if (off >= brdp->memsize || off + count < off)
|
|
return 0;
|
|
|
|
size = min(count, (size_t)(brdp->memsize - off));
|
|
|
|
/*
|
|
* Copy the data a page at a time
|
|
*/
|
|
|
|
p = (void *)__get_free_page(GFP_KERNEL);
|
|
if(p == NULL)
|
|
return -ENOMEM;
|
|
|
|
while (size > 0) {
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
memptr = EBRDGETMEMPTR(brdp, off);
|
|
n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
|
|
n = min(n, (int)PAGE_SIZE);
|
|
memcpy_fromio(p, memptr, n);
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
if (copy_to_user(buf, p, n)) {
|
|
count = -EFAULT;
|
|
goto out;
|
|
}
|
|
off += n;
|
|
buf += n;
|
|
size -= n;
|
|
}
|
|
out:
|
|
*offp = off;
|
|
free_page((unsigned long)p);
|
|
return count;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Code to handle an "staliomem" write operation. This device is the
|
|
* contents of the board shared memory. It is used for down loading
|
|
* the slave image (and debugging :-)
|
|
*
|
|
* FIXME: copy under lock
|
|
*/
|
|
|
|
static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp)
|
|
{
|
|
unsigned long flags;
|
|
void __iomem *memptr;
|
|
struct stlibrd *brdp;
|
|
char __user *chbuf;
|
|
unsigned int brdnr;
|
|
int size, n;
|
|
void *p;
|
|
loff_t off = *offp;
|
|
|
|
brdnr = iminor(fp->f_path.dentry->d_inode);
|
|
|
|
if (brdnr >= stli_nrbrds)
|
|
return -ENODEV;
|
|
brdp = stli_brds[brdnr];
|
|
if (brdp == NULL)
|
|
return -ENODEV;
|
|
if (brdp->state == 0)
|
|
return -ENODEV;
|
|
if (off >= brdp->memsize || off + count < off)
|
|
return 0;
|
|
|
|
chbuf = (char __user *) buf;
|
|
size = min(count, (size_t)(brdp->memsize - off));
|
|
|
|
/*
|
|
* Copy the data a page at a time
|
|
*/
|
|
|
|
p = (void *)__get_free_page(GFP_KERNEL);
|
|
if(p == NULL)
|
|
return -ENOMEM;
|
|
|
|
while (size > 0) {
|
|
n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize)));
|
|
n = min(n, (int)PAGE_SIZE);
|
|
if (copy_from_user(p, chbuf, n)) {
|
|
if (count == 0)
|
|
count = -EFAULT;
|
|
goto out;
|
|
}
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
EBRDENABLE(brdp);
|
|
memptr = EBRDGETMEMPTR(brdp, off);
|
|
memcpy_toio(memptr, p, n);
|
|
EBRDDISABLE(brdp);
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
off += n;
|
|
chbuf += n;
|
|
size -= n;
|
|
}
|
|
out:
|
|
free_page((unsigned long) p);
|
|
*offp = off;
|
|
return count;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Return the board stats structure to user app.
|
|
*/
|
|
|
|
static int stli_getbrdstats(combrd_t __user *bp)
|
|
{
|
|
struct stlibrd *brdp;
|
|
unsigned int i;
|
|
|
|
if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
|
|
return -EFAULT;
|
|
if (stli_brdstats.brd >= STL_MAXBRDS)
|
|
return -ENODEV;
|
|
brdp = stli_brds[stli_brdstats.brd];
|
|
if (brdp == NULL)
|
|
return -ENODEV;
|
|
|
|
memset(&stli_brdstats, 0, sizeof(combrd_t));
|
|
stli_brdstats.brd = brdp->brdnr;
|
|
stli_brdstats.type = brdp->brdtype;
|
|
stli_brdstats.hwid = 0;
|
|
stli_brdstats.state = brdp->state;
|
|
stli_brdstats.ioaddr = brdp->iobase;
|
|
stli_brdstats.memaddr = brdp->memaddr;
|
|
stli_brdstats.nrpanels = brdp->nrpanels;
|
|
stli_brdstats.nrports = brdp->nrports;
|
|
for (i = 0; (i < brdp->nrpanels); i++) {
|
|
stli_brdstats.panels[i].panel = i;
|
|
stli_brdstats.panels[i].hwid = brdp->panelids[i];
|
|
stli_brdstats.panels[i].nrports = brdp->panels[i];
|
|
}
|
|
|
|
if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Resolve the referenced port number into a port struct pointer.
|
|
*/
|
|
|
|
static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr,
|
|
unsigned int portnr)
|
|
{
|
|
struct stlibrd *brdp;
|
|
unsigned int i;
|
|
|
|
if (brdnr >= STL_MAXBRDS)
|
|
return NULL;
|
|
brdp = stli_brds[brdnr];
|
|
if (brdp == NULL)
|
|
return NULL;
|
|
for (i = 0; (i < panelnr); i++)
|
|
portnr += brdp->panels[i];
|
|
if (portnr >= brdp->nrports)
|
|
return NULL;
|
|
return brdp->ports[portnr];
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Return the port stats structure to user app. A NULL port struct
|
|
* pointer passed in means that we need to find out from the app
|
|
* what port to get stats for (used through board control device).
|
|
*/
|
|
|
|
static int stli_portcmdstats(struct stliport *portp)
|
|
{
|
|
unsigned long flags;
|
|
struct stlibrd *brdp;
|
|
int rc;
|
|
|
|
memset(&stli_comstats, 0, sizeof(comstats_t));
|
|
|
|
if (portp == NULL)
|
|
return -ENODEV;
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (brdp == NULL)
|
|
return -ENODEV;
|
|
|
|
if (brdp->state & BST_STARTED) {
|
|
if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
|
|
&stli_cdkstats, sizeof(asystats_t), 1)) < 0)
|
|
return rc;
|
|
} else {
|
|
memset(&stli_cdkstats, 0, sizeof(asystats_t));
|
|
}
|
|
|
|
stli_comstats.brd = portp->brdnr;
|
|
stli_comstats.panel = portp->panelnr;
|
|
stli_comstats.port = portp->portnr;
|
|
stli_comstats.state = portp->state;
|
|
stli_comstats.flags = portp->flags;
|
|
|
|
spin_lock_irqsave(&brd_lock, flags);
|
|
if (portp->tty != NULL) {
|
|
if (portp->tty->driver_data == portp) {
|
|
stli_comstats.ttystate = portp->tty->flags;
|
|
stli_comstats.rxbuffered = -1;
|
|
if (portp->tty->termios != NULL) {
|
|
stli_comstats.cflags = portp->tty->termios->c_cflag;
|
|
stli_comstats.iflags = portp->tty->termios->c_iflag;
|
|
stli_comstats.oflags = portp->tty->termios->c_oflag;
|
|
stli_comstats.lflags = portp->tty->termios->c_lflag;
|
|
}
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&brd_lock, flags);
|
|
|
|
stli_comstats.txtotal = stli_cdkstats.txchars;
|
|
stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
|
|
stli_comstats.txbuffered = stli_cdkstats.txringq;
|
|
stli_comstats.rxbuffered += stli_cdkstats.rxringq;
|
|
stli_comstats.rxoverrun = stli_cdkstats.overruns;
|
|
stli_comstats.rxparity = stli_cdkstats.parity;
|
|
stli_comstats.rxframing = stli_cdkstats.framing;
|
|
stli_comstats.rxlost = stli_cdkstats.ringover;
|
|
stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
|
|
stli_comstats.txbreaks = stli_cdkstats.txbreaks;
|
|
stli_comstats.txxon = stli_cdkstats.txstart;
|
|
stli_comstats.txxoff = stli_cdkstats.txstop;
|
|
stli_comstats.rxxon = stli_cdkstats.rxstart;
|
|
stli_comstats.rxxoff = stli_cdkstats.rxstop;
|
|
stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
|
|
stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
|
|
stli_comstats.modem = stli_cdkstats.dcdcnt;
|
|
stli_comstats.hwid = stli_cdkstats.hwid;
|
|
stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Return the port stats structure to user app. A NULL port struct
|
|
* pointer passed in means that we need to find out from the app
|
|
* what port to get stats for (used through board control device).
|
|
*/
|
|
|
|
static int stli_getportstats(struct stliport *portp, comstats_t __user *cp)
|
|
{
|
|
struct stlibrd *brdp;
|
|
int rc;
|
|
|
|
if (!portp) {
|
|
if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
|
|
return -EFAULT;
|
|
portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
|
|
stli_comstats.port);
|
|
if (!portp)
|
|
return -ENODEV;
|
|
}
|
|
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (!brdp)
|
|
return -ENODEV;
|
|
|
|
if ((rc = stli_portcmdstats(portp)) < 0)
|
|
return rc;
|
|
|
|
return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
|
|
-EFAULT : 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Clear the port stats structure. We also return it zeroed out...
|
|
*/
|
|
|
|
static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp)
|
|
{
|
|
struct stlibrd *brdp;
|
|
int rc;
|
|
|
|
if (!portp) {
|
|
if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
|
|
return -EFAULT;
|
|
portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
|
|
stli_comstats.port);
|
|
if (!portp)
|
|
return -ENODEV;
|
|
}
|
|
|
|
brdp = stli_brds[portp->brdnr];
|
|
if (!brdp)
|
|
return -ENODEV;
|
|
|
|
if (brdp->state & BST_STARTED) {
|
|
if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0)
|
|
return rc;
|
|
}
|
|
|
|
memset(&stli_comstats, 0, sizeof(comstats_t));
|
|
stli_comstats.brd = portp->brdnr;
|
|
stli_comstats.panel = portp->panelnr;
|
|
stli_comstats.port = portp->portnr;
|
|
|
|
if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Return the entire driver ports structure to a user app.
|
|
*/
|
|
|
|
static int stli_getportstruct(struct stliport __user *arg)
|
|
{
|
|
struct stliport stli_dummyport;
|
|
struct stliport *portp;
|
|
|
|
if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport)))
|
|
return -EFAULT;
|
|
portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
|
|
stli_dummyport.portnr);
|
|
if (!portp)
|
|
return -ENODEV;
|
|
if (copy_to_user(arg, portp, sizeof(struct stliport)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* Return the entire driver board structure to a user app.
|
|
*/
|
|
|
|
static int stli_getbrdstruct(struct stlibrd __user *arg)
|
|
{
|
|
struct stlibrd stli_dummybrd;
|
|
struct stlibrd *brdp;
|
|
|
|
if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd)))
|
|
return -EFAULT;
|
|
if (stli_dummybrd.brdnr >= STL_MAXBRDS)
|
|
return -ENODEV;
|
|
brdp = stli_brds[stli_dummybrd.brdnr];
|
|
if (!brdp)
|
|
return -ENODEV;
|
|
if (copy_to_user(arg, brdp, sizeof(struct stlibrd)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
/*
|
|
* The "staliomem" device is also required to do some special operations on
|
|
* the board. We need to be able to send an interrupt to the board,
|
|
* reset it, and start/stop it.
|
|
*/
|
|
|
|
static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct stlibrd *brdp;
|
|
int brdnr, rc, done;
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
/*
|
|
* First up handle the board independent ioctls.
|
|
*/
|
|
done = 0;
|
|
rc = 0;
|
|
|
|
switch (cmd) {
|
|
case COM_GETPORTSTATS:
|
|
rc = stli_getportstats(NULL, argp);
|
|
done++;
|
|
break;
|
|
case COM_CLRPORTSTATS:
|
|
rc = stli_clrportstats(NULL, argp);
|
|
done++;
|
|
break;
|
|
case COM_GETBRDSTATS:
|
|
rc = stli_getbrdstats(argp);
|
|
done++;
|
|
break;
|
|
case COM_READPORT:
|
|
rc = stli_getportstruct(argp);
|
|
done++;
|
|
break;
|
|
case COM_READBOARD:
|
|
rc = stli_getbrdstruct(argp);
|
|
done++;
|
|
break;
|
|
}
|
|
|
|
if (done)
|
|
return rc;
|
|
|
|
/*
|
|
* Now handle the board specific ioctls. These all depend on the
|
|
* minor number of the device they were called from.
|
|
*/
|
|
brdnr = iminor(ip);
|
|
if (brdnr >= STL_MAXBRDS)
|
|
return -ENODEV;
|
|
brdp = stli_brds[brdnr];
|
|
if (!brdp)
|
|
return -ENODEV;
|
|
if (brdp->state == 0)
|
|
return -ENODEV;
|
|
|
|
switch (cmd) {
|
|
case STL_BINTR:
|
|
EBRDINTR(brdp);
|
|
break;
|
|
case STL_BSTART:
|
|
rc = stli_startbrd(brdp);
|
|
break;
|
|
case STL_BSTOP:
|
|
brdp->state &= ~BST_STARTED;
|
|
break;
|
|
case STL_BRESET:
|
|
brdp->state &= ~BST_STARTED;
|
|
EBRDRESET(brdp);
|
|
if (stli_shared == 0) {
|
|
if (brdp->reenable != NULL)
|
|
(* brdp->reenable)(brdp);
|
|
}
|
|
break;
|
|
default:
|
|
rc = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static const struct tty_operations stli_ops = {
|
|
.open = stli_open,
|
|
.close = stli_close,
|
|
.write = stli_write,
|
|
.put_char = stli_putchar,
|
|
.flush_chars = stli_flushchars,
|
|
.write_room = stli_writeroom,
|
|
.chars_in_buffer = stli_charsinbuffer,
|
|
.ioctl = stli_ioctl,
|
|
.set_termios = stli_settermios,
|
|
.throttle = stli_throttle,
|
|
.unthrottle = stli_unthrottle,
|
|
.stop = stli_stop,
|
|
.start = stli_start,
|
|
.hangup = stli_hangup,
|
|
.flush_buffer = stli_flushbuffer,
|
|
.break_ctl = stli_breakctl,
|
|
.wait_until_sent = stli_waituntilsent,
|
|
.send_xchar = stli_sendxchar,
|
|
.read_proc = stli_readproc,
|
|
.tiocmget = stli_tiocmget,
|
|
.tiocmset = stli_tiocmset,
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* Loadable module initialization stuff.
|
|
*/
|
|
|
|
static void istallion_cleanup_isa(void)
|
|
{
|
|
struct stlibrd *brdp;
|
|
unsigned int j;
|
|
|
|
for (j = 0; (j < stli_nrbrds); j++) {
|
|
if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED))
|
|
continue;
|
|
|
|
stli_cleanup_ports(brdp);
|
|
|
|
iounmap(brdp->membase);
|
|
if (brdp->iosize > 0)
|
|
release_region(brdp->iobase, brdp->iosize);
|
|
kfree(brdp);
|
|
stli_brds[j] = NULL;
|
|
}
|
|
}
|
|
|
|
static int __init istallion_module_init(void)
|
|
{
|
|
unsigned int i;
|
|
int retval;
|
|
|
|
printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion);
|
|
|
|
spin_lock_init(&stli_lock);
|
|
spin_lock_init(&brd_lock);
|
|
|
|
stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
|
|
if (!stli_txcookbuf) {
|
|
printk(KERN_ERR "STALLION: failed to allocate memory "
|
|
"(size=%d)\n", STLI_TXBUFSIZE);
|
|
retval = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
|
|
if (!stli_serial) {
|
|
retval = -ENOMEM;
|
|
goto err_free;
|
|
}
|
|
|
|
stli_serial->owner = THIS_MODULE;
|
|
stli_serial->driver_name = stli_drvname;
|
|
stli_serial->name = stli_serialname;
|
|
stli_serial->major = STL_SERIALMAJOR;
|
|
stli_serial->minor_start = 0;
|
|
stli_serial->type = TTY_DRIVER_TYPE_SERIAL;
|
|
stli_serial->subtype = SERIAL_TYPE_NORMAL;
|
|
stli_serial->init_termios = stli_deftermios;
|
|
stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
|
|
tty_set_operations(stli_serial, &stli_ops);
|
|
|
|
retval = tty_register_driver(stli_serial);
|
|
if (retval) {
|
|
printk(KERN_ERR "STALLION: failed to register serial driver\n");
|
|
goto err_ttyput;
|
|
}
|
|
|
|
retval = stli_initbrds();
|
|
if (retval)
|
|
goto err_ttyunr;
|
|
|
|
/*
|
|
* Set up a character driver for the shared memory region. We need this
|
|
* to down load the slave code image. Also it is a useful debugging tool.
|
|
*/
|
|
retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
|
|
if (retval) {
|
|
printk(KERN_ERR "STALLION: failed to register serial memory "
|
|
"device\n");
|
|
goto err_deinit;
|
|
}
|
|
|
|
istallion_class = class_create(THIS_MODULE, "staliomem");
|
|
for (i = 0; i < 4; i++)
|
|
device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i),
|
|
"staliomem%d", i);
|
|
|
|
return 0;
|
|
err_deinit:
|
|
pci_unregister_driver(&stli_pcidriver);
|
|
istallion_cleanup_isa();
|
|
err_ttyunr:
|
|
tty_unregister_driver(stli_serial);
|
|
err_ttyput:
|
|
put_tty_driver(stli_serial);
|
|
err_free:
|
|
kfree(stli_txcookbuf);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
static void __exit istallion_module_exit(void)
|
|
{
|
|
unsigned int j;
|
|
|
|
printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle,
|
|
stli_drvversion);
|
|
|
|
if (stli_timeron) {
|
|
stli_timeron = 0;
|
|
del_timer_sync(&stli_timerlist);
|
|
}
|
|
|
|
unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
|
|
|
|
for (j = 0; j < 4; j++)
|
|
device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j));
|
|
class_destroy(istallion_class);
|
|
|
|
pci_unregister_driver(&stli_pcidriver);
|
|
istallion_cleanup_isa();
|
|
|
|
tty_unregister_driver(stli_serial);
|
|
put_tty_driver(stli_serial);
|
|
|
|
kfree(stli_txcookbuf);
|
|
}
|
|
|
|
module_init(istallion_module_init);
|
|
module_exit(istallion_module_exit);
|