Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
This commit is contained in:
Paul Mackerras
Коммит
35d77ef1c0
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@ -17,6 +17,7 @@
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#include "44x.h"
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#include "cuboot.h"
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#define TARGET_4xx
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#define TARGET_44x
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#include "ppcboot.h"
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@ -17,6 +17,7 @@
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#include "44x.h"
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#include "cuboot.h"
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#define TARGET_4xx
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#define TARGET_44x
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#include "ppcboot.h"
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@ -22,6 +22,7 @@
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#include "44x.h"
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#include "cuboot.h"
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#define TARGET_4xx
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#define TARGET_44x
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#include "ppcboot.h"
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@ -21,7 +21,9 @@
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#include "dcr.h"
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#include "4xx.h"
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#define TARGET_4xx
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#define TARGET_44x
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#define TARGET_440GX
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#include "ppcboot.h"
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static bd_t bd;
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@ -11,6 +11,7 @@
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#include "4xx.h"
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#include "cuboot.h"
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#define TARGET_4xx
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#define TARGET_44x
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#include "ppcboot.h"
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@ -235,7 +235,7 @@
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#interrupt-cells = <1>;
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#size-cells = <2>;
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#address-cells = <3>;
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compatible = "ibm,plb-pciex-405exr", "ibm,plb-pciex";
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compatible = "ibm,plb-pciex-405ex", "ibm,plb-pciex";
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primary;
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port = <0>; /* port number */
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reg = <a0000000 20000000 /* Config space access */
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@ -38,8 +38,8 @@
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timebase-frequency = <0>; /* Filled in by zImage */
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i-cache-line-size = <20>;
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d-cache-line-size = <20>;
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i-cache-size = <20000>;
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d-cache-size = <20000>;
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i-cache-size = <8000>;
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d-cache-size = <8000>;
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dcr-controller;
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dcr-access-method = "native";
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};
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@ -136,11 +136,11 @@
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};
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POB0: opb {
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compatible = "ibm,opb-440spe", "ibm,opb-440gp", "ibm,opb";
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compatible = "ibm,opb-440spe", "ibm,opb-440gp", "ibm,opb";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <00000000 4 e0000000 20000000>;
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clock-frequency = <0>; /* Filled in by zImage */
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ranges = <00000000 4 e0000000 20000000>;
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clock-frequency = <0>; /* Filled in by zImage */
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EBC0: ebc {
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compatible = "ibm,ebc-440spe", "ibm,ebc-440gp", "ibm,ebc";
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@ -153,38 +153,38 @@
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};
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UART0: serial@10000200 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <10000200 8>;
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device_type = "serial";
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compatible = "ns16550";
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reg = <10000200 8>;
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virtual-reg = <a0000200>;
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clock-frequency = <0>; /* Filled in by zImage */
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current-speed = <1c200>;
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interrupt-parent = <&UIC0>;
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interrupts = <0 4>;
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};
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clock-frequency = <0>; /* Filled in by zImage */
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current-speed = <1c200>;
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interrupt-parent = <&UIC0>;
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interrupts = <0 4>;
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};
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UART1: serial@10000300 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <10000300 8>;
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device_type = "serial";
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compatible = "ns16550";
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reg = <10000300 8>;
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virtual-reg = <a0000300>;
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC0>;
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interrupts = <1 4>;
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};
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC0>;
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interrupts = <1 4>;
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};
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UART2: serial@10000600 {
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device_type = "serial";
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compatible = "ns16550";
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reg = <10000600 8>;
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device_type = "serial";
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compatible = "ns16550";
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reg = <10000600 8>;
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virtual-reg = <a0000600>;
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC1>;
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interrupts = <5 4>;
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};
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clock-frequency = <0>;
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current-speed = <0>;
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interrupt-parent = <&UIC1>;
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interrupts = <5 4>;
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};
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IIC0: i2c@10000400 {
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compatible = "ibm,iic-440spe", "ibm,iic-440gp", "ibm,iic";
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@ -73,8 +73,8 @@
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#define XHI_BUFFER_START 0
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/**
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* buffer_icap_get_status: Get the contents of the status register.
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* @parameter base_address: is the base address of the device
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* buffer_icap_get_status - Get the contents of the status register.
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* @base_address: is the base address of the device
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*
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* The status register contains the ICAP status and the done bit.
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*
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@ -94,9 +94,9 @@ static inline u32 buffer_icap_get_status(void __iomem *base_address)
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}
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/**
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* buffer_icap_get_bram: Reads data from the storage buffer bram.
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* @parameter base_address: contains the base address of the component.
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* @parameter offset: The word offset from which the data should be read.
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* buffer_icap_get_bram - Reads data from the storage buffer bram.
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* @base_address: contains the base address of the component.
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* @offset: The word offset from which the data should be read.
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*
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* A bram is used as a configuration memory cache. One frame of data can
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* be stored in this "storage buffer".
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@ -108,8 +108,8 @@ static inline u32 buffer_icap_get_bram(void __iomem *base_address,
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}
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/**
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* buffer_icap_busy: Return true if the icap device is busy
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* @parameter base_address: is the base address of the device
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* buffer_icap_busy - Return true if the icap device is busy
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* @base_address: is the base address of the device
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*
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* The queries the low order bit of the status register, which
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* indicates whether the current configuration or readback operation
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@ -121,8 +121,8 @@ static inline bool buffer_icap_busy(void __iomem *base_address)
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}
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/**
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* buffer_icap_busy: Return true if the icap device is not busy
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* @parameter base_address: is the base address of the device
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* buffer_icap_busy - Return true if the icap device is not busy
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* @base_address: is the base address of the device
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*
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* The queries the low order bit of the status register, which
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* indicates whether the current configuration or readback operation
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@ -134,9 +134,9 @@ static inline bool buffer_icap_done(void __iomem *base_address)
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}
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/**
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* buffer_icap_set_size: Set the size register.
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* @parameter base_address: is the base address of the device
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* @parameter data: The size in bytes.
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* buffer_icap_set_size - Set the size register.
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* @base_address: is the base address of the device
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* @data: The size in bytes.
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*
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* The size register holds the number of 8 bit bytes to transfer between
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* bram and the icap (or icap to bram).
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@ -148,9 +148,9 @@ static inline void buffer_icap_set_size(void __iomem *base_address,
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}
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/**
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* buffer_icap_mSetoffsetReg: Set the bram offset register.
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* @parameter base_address: contains the base address of the device.
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* @parameter data: is the value to be written to the data register.
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* buffer_icap_set_offset - Set the bram offset register.
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* @base_address: contains the base address of the device.
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* @data: is the value to be written to the data register.
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*
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* The bram offset register holds the starting bram address to transfer
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* data from during configuration or write data to during readback.
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@ -162,9 +162,9 @@ static inline void buffer_icap_set_offset(void __iomem *base_address,
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}
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/**
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* buffer_icap_set_rnc: Set the RNC (Readback not Configure) register.
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* @parameter base_address: contains the base address of the device.
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* @parameter data: is the value to be written to the data register.
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* buffer_icap_set_rnc - Set the RNC (Readback not Configure) register.
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* @base_address: contains the base address of the device.
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* @data: is the value to be written to the data register.
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*
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* The RNC register determines the direction of the data transfer. It
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* controls whether a configuration or readback take place. Writing to
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@ -178,10 +178,10 @@ static inline void buffer_icap_set_rnc(void __iomem *base_address,
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}
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/**
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* buffer_icap_set_bram: Write data to the storage buffer bram.
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* @parameter base_address: contains the base address of the component.
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* @parameter offset: The word offset at which the data should be written.
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* @parameter data: The value to be written to the bram offset.
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* buffer_icap_set_bram - Write data to the storage buffer bram.
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* @base_address: contains the base address of the component.
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* @offset: The word offset at which the data should be written.
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* @data: The value to be written to the bram offset.
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*
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* A bram is used as a configuration memory cache. One frame of data can
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* be stored in this "storage buffer".
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@ -193,10 +193,10 @@ static inline void buffer_icap_set_bram(void __iomem *base_address,
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}
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/**
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* buffer_icap_device_read: Transfer bytes from ICAP to the storage buffer.
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* @parameter drvdata: a pointer to the drvdata.
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* @parameter offset: The storage buffer start address.
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* @parameter count: The number of words (32 bit) to read from the
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* buffer_icap_device_read - Transfer bytes from ICAP to the storage buffer.
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* @drvdata: a pointer to the drvdata.
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* @offset: The storage buffer start address.
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* @count: The number of words (32 bit) to read from the
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* device (ICAP).
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**/
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static int buffer_icap_device_read(struct hwicap_drvdata *drvdata,
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@ -227,10 +227,10 @@ static int buffer_icap_device_read(struct hwicap_drvdata *drvdata,
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};
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/**
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* buffer_icap_device_write: Transfer bytes from ICAP to the storage buffer.
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* @parameter drvdata: a pointer to the drvdata.
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* @parameter offset: The storage buffer start address.
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* @parameter count: The number of words (32 bit) to read from the
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* buffer_icap_device_write - Transfer bytes from ICAP to the storage buffer.
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* @drvdata: a pointer to the drvdata.
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* @offset: The storage buffer start address.
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* @count: The number of words (32 bit) to read from the
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* device (ICAP).
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**/
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static int buffer_icap_device_write(struct hwicap_drvdata *drvdata,
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@ -261,8 +261,8 @@ static int buffer_icap_device_write(struct hwicap_drvdata *drvdata,
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};
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/**
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* buffer_icap_reset: Reset the logic of the icap device.
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* @parameter drvdata: a pointer to the drvdata.
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* buffer_icap_reset - Reset the logic of the icap device.
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* @drvdata: a pointer to the drvdata.
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*
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* Writing to the status register resets the ICAP logic in an internal
|
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* version of the core. For the version of the core published in EDK,
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|
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@ -274,10 +274,10 @@ void buffer_icap_reset(struct hwicap_drvdata *drvdata)
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}
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/**
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* buffer_icap_set_configuration: Load a partial bitstream from system memory.
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* @parameter drvdata: a pointer to the drvdata.
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* @parameter data: Kernel address of the partial bitstream.
|
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* @parameter size: the size of the partial bitstream in 32 bit words.
|
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* buffer_icap_set_configuration - Load a partial bitstream from system memory.
|
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* @drvdata: a pointer to the drvdata.
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* @data: Kernel address of the partial bitstream.
|
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* @size: the size of the partial bitstream in 32 bit words.
|
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**/
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int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data,
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u32 size)
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@ -333,10 +333,10 @@ int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data,
|
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};
|
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|
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/**
|
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* buffer_icap_get_configuration: Read configuration data from the device.
|
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* @parameter drvdata: a pointer to the drvdata.
|
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* @parameter data: Address of the data representing the partial bitstream
|
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* @parameter size: the size of the partial bitstream in 32 bit words.
|
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* buffer_icap_get_configuration - Read configuration data from the device.
|
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* @drvdata: a pointer to the drvdata.
|
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* @data: Address of the data representing the partial bitstream
|
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* @size: the size of the partial bitstream in 32 bit words.
|
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**/
|
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int buffer_icap_get_configuration(struct hwicap_drvdata *drvdata, u32 *data,
|
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u32 size)
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|
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|
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@ -94,9 +94,9 @@
|
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|
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|
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/**
|
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* fifo_icap_fifo_write: Write data to the write FIFO.
|
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* @parameter drvdata: a pointer to the drvdata.
|
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* @parameter data: the 32-bit value to be written to the FIFO.
|
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* fifo_icap_fifo_write - Write data to the write FIFO.
|
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* @drvdata: a pointer to the drvdata.
|
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* @data: the 32-bit value to be written to the FIFO.
|
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*
|
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* This function will silently fail if the fifo is full.
|
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**/
|
||||
|
|
@ -108,8 +108,8 @@ static inline void fifo_icap_fifo_write(struct hwicap_drvdata *drvdata,
|
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}
|
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|
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/**
|
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* fifo_icap_fifo_read: Read data from the Read FIFO.
|
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* @parameter drvdata: a pointer to the drvdata.
|
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* fifo_icap_fifo_read - Read data from the Read FIFO.
|
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* @drvdata: a pointer to the drvdata.
|
||||
*
|
||||
* This function will silently fail if the fifo is empty.
|
||||
**/
|
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|
|
@ -121,9 +121,9 @@ static inline u32 fifo_icap_fifo_read(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_set_read_size: Set the the size register.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* @parameter data: the size of the following read transaction, in words.
|
||||
* fifo_icap_set_read_size - Set the the size register.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
* @data: the size of the following read transaction, in words.
|
||||
**/
|
||||
static inline void fifo_icap_set_read_size(struct hwicap_drvdata *drvdata,
|
||||
u32 data)
|
||||
|
|
@ -132,8 +132,8 @@ static inline void fifo_icap_set_read_size(struct hwicap_drvdata *drvdata,
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_start_config: Initiate a configuration (write) to the device.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* fifo_icap_start_config - Initiate a configuration (write) to the device.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
**/
|
||||
static inline void fifo_icap_start_config(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
|
|
@ -142,8 +142,8 @@ static inline void fifo_icap_start_config(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_start_readback: Initiate a readback from the device.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* fifo_icap_start_readback - Initiate a readback from the device.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
**/
|
||||
static inline void fifo_icap_start_readback(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
|
|
@ -152,8 +152,8 @@ static inline void fifo_icap_start_readback(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_busy: Return true if the ICAP is still processing a transaction.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* fifo_icap_busy - Return true if the ICAP is still processing a transaction.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
**/
|
||||
static inline u32 fifo_icap_busy(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
|
|
@ -163,8 +163,8 @@ static inline u32 fifo_icap_busy(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_write_fifo_vacancy: Query the write fifo available space.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* fifo_icap_write_fifo_vacancy - Query the write fifo available space.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
*
|
||||
* Return the number of words that can be safely pushed into the write fifo.
|
||||
**/
|
||||
|
|
@ -175,8 +175,8 @@ static inline u32 fifo_icap_write_fifo_vacancy(
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_read_fifo_occupancy: Query the read fifo available data.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* fifo_icap_read_fifo_occupancy - Query the read fifo available data.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
*
|
||||
* Return the number of words that can be safely read from the read fifo.
|
||||
**/
|
||||
|
|
@ -187,11 +187,11 @@ static inline u32 fifo_icap_read_fifo_occupancy(
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_set_configuration: Send configuration data to the ICAP.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* @parameter frame_buffer: a pointer to the data to be written to the
|
||||
* fifo_icap_set_configuration - Send configuration data to the ICAP.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
* @frame_buffer: a pointer to the data to be written to the
|
||||
* ICAP device.
|
||||
* @parameter num_words: the number of words (32 bit) to write to the ICAP
|
||||
* @num_words: the number of words (32 bit) to write to the ICAP
|
||||
* device.
|
||||
|
||||
* This function writes the given user data to the Write FIFO in
|
||||
|
|
@ -266,10 +266,10 @@ int fifo_icap_set_configuration(struct hwicap_drvdata *drvdata,
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_get_configuration: Read configuration data from the device.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* @parameter data: Address of the data representing the partial bitstream
|
||||
* @parameter size: the size of the partial bitstream in 32 bit words.
|
||||
* fifo_icap_get_configuration - Read configuration data from the device.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
* @data: Address of the data representing the partial bitstream
|
||||
* @size: the size of the partial bitstream in 32 bit words.
|
||||
*
|
||||
* This function reads the specified number of words from the ICAP device in
|
||||
* the polled mode.
|
||||
|
|
@ -335,8 +335,8 @@ int fifo_icap_get_configuration(struct hwicap_drvdata *drvdata,
|
|||
}
|
||||
|
||||
/**
|
||||
* buffer_icap_reset: Reset the logic of the icap device.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* buffer_icap_reset - Reset the logic of the icap device.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
*
|
||||
* This function forces the software reset of the complete HWICAP device.
|
||||
* All the registers will return to the default value and the FIFO is also
|
||||
|
|
@ -360,8 +360,8 @@ void fifo_icap_reset(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
/**
|
||||
* fifo_icap_flush_fifo: This function flushes the FIFOs in the device.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* fifo_icap_flush_fifo - This function flushes the FIFOs in the device.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
*/
|
||||
void fifo_icap_flush_fifo(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -84,7 +84,7 @@
|
|||
#include <linux/init.h>
|
||||
#include <linux/poll.h>
|
||||
#include <linux/proc_fs.h>
|
||||
#include <asm/semaphore.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/sysctl.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/fs.h>
|
||||
|
|
@ -119,6 +119,7 @@ module_param(xhwicap_minor, int, S_IRUGO);
|
|||
|
||||
/* An array, which is set to true when the device is registered. */
|
||||
static bool probed_devices[HWICAP_DEVICES];
|
||||
static struct mutex icap_sem;
|
||||
|
||||
static struct class *icap_class;
|
||||
|
||||
|
|
@ -199,14 +200,14 @@ static const struct config_registers v5_config_registers = {
|
|||
};
|
||||
|
||||
/**
|
||||
* hwicap_command_desync: Send a DESYNC command to the ICAP port.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* hwicap_command_desync - Send a DESYNC command to the ICAP port.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
*
|
||||
* This command desynchronizes the ICAP After this command, a
|
||||
* bitstream containing a NULL packet, followed by a SYNCH packet is
|
||||
* required before the ICAP will recognize commands.
|
||||
*/
|
||||
int hwicap_command_desync(struct hwicap_drvdata *drvdata)
|
||||
static int hwicap_command_desync(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
u32 buffer[4];
|
||||
u32 index = 0;
|
||||
|
|
@ -228,51 +229,18 @@ int hwicap_command_desync(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
/**
|
||||
* hwicap_command_capture: Send a CAPTURE command to the ICAP port.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
*
|
||||
* This command captures all of the flip flop states so they will be
|
||||
* available during readback. One can use this command instead of
|
||||
* enabling the CAPTURE block in the design.
|
||||
*/
|
||||
int hwicap_command_capture(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
u32 buffer[7];
|
||||
u32 index = 0;
|
||||
|
||||
/*
|
||||
* Create the data to be written to the ICAP.
|
||||
*/
|
||||
buffer[index++] = XHI_DUMMY_PACKET;
|
||||
buffer[index++] = XHI_SYNC_PACKET;
|
||||
buffer[index++] = XHI_NOOP_PACKET;
|
||||
buffer[index++] = hwicap_type_1_write(drvdata->config_regs->CMD) | 1;
|
||||
buffer[index++] = XHI_CMD_GCAPTURE;
|
||||
buffer[index++] = XHI_DUMMY_PACKET;
|
||||
buffer[index++] = XHI_DUMMY_PACKET;
|
||||
|
||||
/*
|
||||
* Write the data to the FIFO and intiate the transfer of data
|
||||
* present in the FIFO to the ICAP device.
|
||||
*/
|
||||
return drvdata->config->set_configuration(drvdata,
|
||||
&buffer[0], index);
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* hwicap_get_configuration_register: Query a configuration register.
|
||||
* @parameter drvdata: a pointer to the drvdata.
|
||||
* @parameter reg: a constant which represents the configuration
|
||||
* hwicap_get_configuration_register - Query a configuration register.
|
||||
* @drvdata: a pointer to the drvdata.
|
||||
* @reg: a constant which represents the configuration
|
||||
* register value to be returned.
|
||||
* Examples: XHI_IDCODE, XHI_FLR.
|
||||
* @parameter RegData: returns the value of the register.
|
||||
* @reg_data: returns the value of the register.
|
||||
*
|
||||
* Sends a query packet to the ICAP and then receives the response.
|
||||
* The icap is left in Synched state.
|
||||
*/
|
||||
int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata,
|
||||
u32 reg, u32 *RegData)
|
||||
static int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata,
|
||||
u32 reg, u32 *reg_data)
|
||||
{
|
||||
int status;
|
||||
u32 buffer[6];
|
||||
|
|
@ -300,14 +268,14 @@ int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata,
|
|||
/*
|
||||
* Read the configuration register
|
||||
*/
|
||||
status = drvdata->config->get_configuration(drvdata, RegData, 1);
|
||||
status = drvdata->config->get_configuration(drvdata, reg_data, 1);
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int hwicap_initialize_hwicap(struct hwicap_drvdata *drvdata)
|
||||
static int hwicap_initialize_hwicap(struct hwicap_drvdata *drvdata)
|
||||
{
|
||||
int status;
|
||||
u32 idcode;
|
||||
|
|
@ -344,7 +312,7 @@ int hwicap_initialize_hwicap(struct hwicap_drvdata *drvdata)
|
|||
}
|
||||
|
||||
static ssize_t
|
||||
hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos)
|
||||
hwicap_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
|
||||
{
|
||||
struct hwicap_drvdata *drvdata = file->private_data;
|
||||
ssize_t bytes_to_read = 0;
|
||||
|
|
@ -353,8 +321,9 @@ hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos)
|
|||
u32 bytes_remaining;
|
||||
int status;
|
||||
|
||||
if (down_interruptible(&drvdata->sem))
|
||||
return -ERESTARTSYS;
|
||||
status = mutex_lock_interruptible(&drvdata->sem);
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
if (drvdata->read_buffer_in_use) {
|
||||
/* If there are leftover bytes in the buffer, just */
|
||||
|
|
@ -370,8 +339,9 @@ hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos)
|
|||
goto error;
|
||||
}
|
||||
drvdata->read_buffer_in_use -= bytes_to_read;
|
||||
memcpy(drvdata->read_buffer + bytes_to_read,
|
||||
drvdata->read_buffer, 4 - bytes_to_read);
|
||||
memmove(drvdata->read_buffer,
|
||||
drvdata->read_buffer + bytes_to_read,
|
||||
4 - bytes_to_read);
|
||||
} else {
|
||||
/* Get new data from the ICAP, and return was was requested. */
|
||||
kbuf = (u32 *) get_zeroed_page(GFP_KERNEL);
|
||||
|
|
@ -414,18 +384,20 @@ hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos)
|
|||
status = -EFAULT;
|
||||
goto error;
|
||||
}
|
||||
memcpy(kbuf, drvdata->read_buffer, bytes_remaining);
|
||||
memcpy(drvdata->read_buffer,
|
||||
kbuf,
|
||||
bytes_remaining);
|
||||
drvdata->read_buffer_in_use = bytes_remaining;
|
||||
free_page((unsigned long)kbuf);
|
||||
}
|
||||
status = bytes_to_read;
|
||||
error:
|
||||
up(&drvdata->sem);
|
||||
mutex_unlock(&drvdata->sem);
|
||||
return status;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
hwicap_write(struct file *file, const char *buf,
|
||||
hwicap_write(struct file *file, const char __user *buf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
struct hwicap_drvdata *drvdata = file->private_data;
|
||||
|
|
@ -435,8 +407,9 @@ hwicap_write(struct file *file, const char *buf,
|
|||
ssize_t len;
|
||||
ssize_t status;
|
||||
|
||||
if (down_interruptible(&drvdata->sem))
|
||||
return -ERESTARTSYS;
|
||||
status = mutex_lock_interruptible(&drvdata->sem);
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
left += drvdata->write_buffer_in_use;
|
||||
|
||||
|
|
@ -465,7 +438,7 @@ hwicap_write(struct file *file, const char *buf,
|
|||
memcpy(kbuf, drvdata->write_buffer,
|
||||
drvdata->write_buffer_in_use);
|
||||
if (copy_from_user(
|
||||
(((char *)kbuf) + (drvdata->write_buffer_in_use)),
|
||||
(((char *)kbuf) + drvdata->write_buffer_in_use),
|
||||
buf + written,
|
||||
len - (drvdata->write_buffer_in_use))) {
|
||||
free_page((unsigned long)kbuf);
|
||||
|
|
@ -508,7 +481,7 @@ hwicap_write(struct file *file, const char *buf,
|
|||
free_page((unsigned long)kbuf);
|
||||
status = written;
|
||||
error:
|
||||
up(&drvdata->sem);
|
||||
mutex_unlock(&drvdata->sem);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
|
@ -519,8 +492,9 @@ static int hwicap_open(struct inode *inode, struct file *file)
|
|||
|
||||
drvdata = container_of(inode->i_cdev, struct hwicap_drvdata, cdev);
|
||||
|
||||
if (down_interruptible(&drvdata->sem))
|
||||
return -ERESTARTSYS;
|
||||
status = mutex_lock_interruptible(&drvdata->sem);
|
||||
if (status)
|
||||
return status;
|
||||
|
||||
if (drvdata->is_open) {
|
||||
status = -EBUSY;
|
||||
|
|
@ -539,7 +513,7 @@ static int hwicap_open(struct inode *inode, struct file *file)
|
|||
drvdata->is_open = 1;
|
||||
|
||||
error:
|
||||
up(&drvdata->sem);
|
||||
mutex_unlock(&drvdata->sem);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
|
@ -549,8 +523,7 @@ static int hwicap_release(struct inode *inode, struct file *file)
|
|||
int i;
|
||||
int status = 0;
|
||||
|
||||
if (down_interruptible(&drvdata->sem))
|
||||
return -ERESTARTSYS;
|
||||
mutex_lock(&drvdata->sem);
|
||||
|
||||
if (drvdata->write_buffer_in_use) {
|
||||
/* Flush write buffer. */
|
||||
|
|
@ -569,7 +542,7 @@ static int hwicap_release(struct inode *inode, struct file *file)
|
|||
|
||||
error:
|
||||
drvdata->is_open = 0;
|
||||
up(&drvdata->sem);
|
||||
mutex_unlock(&drvdata->sem);
|
||||
return status;
|
||||
}
|
||||
|
||||
|
|
@ -592,31 +565,36 @@ static int __devinit hwicap_setup(struct device *dev, int id,
|
|||
|
||||
dev_info(dev, "Xilinx icap port driver\n");
|
||||
|
||||
mutex_lock(&icap_sem);
|
||||
|
||||
if (id < 0) {
|
||||
for (id = 0; id < HWICAP_DEVICES; id++)
|
||||
if (!probed_devices[id])
|
||||
break;
|
||||
}
|
||||
if (id < 0 || id >= HWICAP_DEVICES) {
|
||||
mutex_unlock(&icap_sem);
|
||||
dev_err(dev, "%s%i too large\n", DRIVER_NAME, id);
|
||||
return -EINVAL;
|
||||
}
|
||||
if (probed_devices[id]) {
|
||||
mutex_unlock(&icap_sem);
|
||||
dev_err(dev, "cannot assign to %s%i; it is already in use\n",
|
||||
DRIVER_NAME, id);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
probed_devices[id] = 1;
|
||||
mutex_unlock(&icap_sem);
|
||||
|
||||
devt = MKDEV(xhwicap_major, xhwicap_minor + id);
|
||||
|
||||
drvdata = kmalloc(sizeof(struct hwicap_drvdata), GFP_KERNEL);
|
||||
drvdata = kzalloc(sizeof(struct hwicap_drvdata), GFP_KERNEL);
|
||||
if (!drvdata) {
|
||||
dev_err(dev, "Couldn't allocate device private record\n");
|
||||
return -ENOMEM;
|
||||
retval = -ENOMEM;
|
||||
goto failed0;
|
||||
}
|
||||
memset((void *)drvdata, 0, sizeof(struct hwicap_drvdata));
|
||||
dev_set_drvdata(dev, (void *)drvdata);
|
||||
|
||||
if (!regs_res) {
|
||||
|
|
@ -648,7 +626,7 @@ static int __devinit hwicap_setup(struct device *dev, int id,
|
|||
drvdata->config = config;
|
||||
drvdata->config_regs = config_regs;
|
||||
|
||||
init_MUTEX(&drvdata->sem);
|
||||
mutex_init(&drvdata->sem);
|
||||
drvdata->is_open = 0;
|
||||
|
||||
dev_info(dev, "ioremap %lx to %p with size %x\n",
|
||||
|
|
@ -663,7 +641,7 @@ static int __devinit hwicap_setup(struct device *dev, int id,
|
|||
goto failed3;
|
||||
}
|
||||
/* devfs_mk_cdev(devt, S_IFCHR|S_IRUGO|S_IWUGO, DRIVER_NAME); */
|
||||
class_device_create(icap_class, NULL, devt, NULL, DRIVER_NAME);
|
||||
device_create(icap_class, dev, devt, "%s%d", DRIVER_NAME, id);
|
||||
return 0; /* success */
|
||||
|
||||
failed3:
|
||||
|
|
@ -675,6 +653,11 @@ static int __devinit hwicap_setup(struct device *dev, int id,
|
|||
failed1:
|
||||
kfree(drvdata);
|
||||
|
||||
failed0:
|
||||
mutex_lock(&icap_sem);
|
||||
probed_devices[id] = 0;
|
||||
mutex_unlock(&icap_sem);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
|
@ -699,14 +682,16 @@ static int __devexit hwicap_remove(struct device *dev)
|
|||
if (!drvdata)
|
||||
return 0;
|
||||
|
||||
class_device_destroy(icap_class, drvdata->devt);
|
||||
device_destroy(icap_class, drvdata->devt);
|
||||
cdev_del(&drvdata->cdev);
|
||||
iounmap(drvdata->base_address);
|
||||
release_mem_region(drvdata->mem_start, drvdata->mem_size);
|
||||
kfree(drvdata);
|
||||
dev_set_drvdata(dev, NULL);
|
||||
probed_devices[MINOR(dev->devt)-xhwicap_minor] = 0;
|
||||
|
||||
mutex_lock(&icap_sem);
|
||||
probed_devices[MINOR(dev->devt)-xhwicap_minor] = 0;
|
||||
mutex_unlock(&icap_sem);
|
||||
return 0; /* success */
|
||||
}
|
||||
|
||||
|
|
@ -821,28 +806,29 @@ static struct of_platform_driver hwicap_of_driver = {
|
|||
};
|
||||
|
||||
/* Registration helpers to keep the number of #ifdefs to a minimum */
|
||||
static inline int __devinit hwicap_of_register(void)
|
||||
static inline int __init hwicap_of_register(void)
|
||||
{
|
||||
pr_debug("hwicap: calling of_register_platform_driver()\n");
|
||||
return of_register_platform_driver(&hwicap_of_driver);
|
||||
}
|
||||
|
||||
static inline void __devexit hwicap_of_unregister(void)
|
||||
static inline void __exit hwicap_of_unregister(void)
|
||||
{
|
||||
of_unregister_platform_driver(&hwicap_of_driver);
|
||||
}
|
||||
#else /* CONFIG_OF */
|
||||
/* CONFIG_OF not enabled; do nothing helpers */
|
||||
static inline int __devinit hwicap_of_register(void) { return 0; }
|
||||
static inline void __devexit hwicap_of_unregister(void) { }
|
||||
static inline int __init hwicap_of_register(void) { return 0; }
|
||||
static inline void __exit hwicap_of_unregister(void) { }
|
||||
#endif /* CONFIG_OF */
|
||||
|
||||
static int __devinit hwicap_module_init(void)
|
||||
static int __init hwicap_module_init(void)
|
||||
{
|
||||
dev_t devt;
|
||||
int retval;
|
||||
|
||||
icap_class = class_create(THIS_MODULE, "xilinx_config");
|
||||
mutex_init(&icap_sem);
|
||||
|
||||
if (xhwicap_major) {
|
||||
devt = MKDEV(xhwicap_major, xhwicap_minor);
|
||||
|
|
@ -883,7 +869,7 @@ static int __devinit hwicap_module_init(void)
|
|||
return retval;
|
||||
}
|
||||
|
||||
static void __devexit hwicap_module_cleanup(void)
|
||||
static void __exit hwicap_module_cleanup(void)
|
||||
{
|
||||
dev_t devt = MKDEV(xhwicap_major, xhwicap_minor);
|
||||
|
||||
|
|
|
|||
|
|
@ -48,9 +48,9 @@ struct hwicap_drvdata {
|
|||
u8 write_buffer[4];
|
||||
u32 read_buffer_in_use; /* Always in [0,3] */
|
||||
u8 read_buffer[4];
|
||||
u32 mem_start; /* phys. address of the control registers */
|
||||
u32 mem_end; /* phys. address of the control registers */
|
||||
u32 mem_size;
|
||||
resource_size_t mem_start;/* phys. address of the control registers */
|
||||
resource_size_t mem_end; /* phys. address of the control registers */
|
||||
resource_size_t mem_size;
|
||||
void __iomem *base_address;/* virt. address of the control registers */
|
||||
|
||||
struct device *dev;
|
||||
|
|
@ -61,7 +61,7 @@ struct hwicap_drvdata {
|
|||
const struct config_registers *config_regs;
|
||||
void *private_data;
|
||||
bool is_open;
|
||||
struct semaphore sem;
|
||||
struct mutex sem;
|
||||
};
|
||||
|
||||
struct hwicap_driver_config {
|
||||
|
|
@ -164,29 +164,29 @@ struct config_registers {
|
|||
#define XHI_DISABLED_AUTO_CRC 0x0000DEFCUL
|
||||
|
||||
/**
|
||||
* hwicap_type_1_read: Generates a Type 1 read packet header.
|
||||
* @parameter: Register is the address of the register to be read back.
|
||||
* hwicap_type_1_read - Generates a Type 1 read packet header.
|
||||
* @reg: is the address of the register to be read back.
|
||||
*
|
||||
* Generates a Type 1 read packet header, which is used to indirectly
|
||||
* read registers in the configuration logic. This packet must then
|
||||
* be sent through the icap device, and a return packet received with
|
||||
* the information.
|
||||
**/
|
||||
static inline u32 hwicap_type_1_read(u32 Register)
|
||||
static inline u32 hwicap_type_1_read(u32 reg)
|
||||
{
|
||||
return (XHI_TYPE_1 << XHI_TYPE_SHIFT) |
|
||||
(Register << XHI_REGISTER_SHIFT) |
|
||||
(reg << XHI_REGISTER_SHIFT) |
|
||||
(XHI_OP_READ << XHI_OP_SHIFT);
|
||||
}
|
||||
|
||||
/**
|
||||
* hwicap_type_1_write: Generates a Type 1 write packet header
|
||||
* @parameter: Register is the address of the register to be read back.
|
||||
* hwicap_type_1_write - Generates a Type 1 write packet header
|
||||
* @reg: is the address of the register to be read back.
|
||||
**/
|
||||
static inline u32 hwicap_type_1_write(u32 Register)
|
||||
static inline u32 hwicap_type_1_write(u32 reg)
|
||||
{
|
||||
return (XHI_TYPE_1 << XHI_TYPE_SHIFT) |
|
||||
(Register << XHI_REGISTER_SHIFT) |
|
||||
(reg << XHI_REGISTER_SHIFT) |
|
||||
(XHI_OP_WRITE << XHI_OP_SHIFT);
|
||||
}
|
||||
|
||||
|
|
|
|||
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