/* pcm3680.c
* Linux CAN-bus device driver.
* Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
* This software is released under the GPL-License.
- * Version 0.7 6 Aug 2001
+ * Version lincan-0.2 9 Jul 2003
*/
-#include <linux/autoconf.h>
-#if defined (CONFIG_MODVERSIONS) && !defined (MODVERSIONS)
-#define MODVERSIONS
-#endif
-
-#if defined (MODVERSIONS)
-#include <linux/modversions.h>
-#endif
-
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <asm/errno.h>
-#include <asm/io.h>
-
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
#include "../include/main.h"
#include "../include/pcm3680.h"
#include "../include/i82527.h"
#include "../include/sja1000p.h"
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)) /* may need correction */
- #ifndef request_mem_region
- #define request_mem_region(start,size,dev) (1)
- #define release_mem_region(start,size)
- #endif /*request_mem_region*/
-#endif /* 2.4.0 */
-
-/* Basic hardware io address. This is also stored in the hardware structure but
- * we need it global, else we have to change many internal functions.
- * pcm3680_base_addr is initialized in pcm3680_init_chip_data().
- */
-unsigned long pcm3680_base_addr;
-static unsigned long isa_base = 0L;
-
/*
* IO_RANGE is the io-memory range that gets reserved, please adjust according
* your hardware. Example: #define IO_RANGE 0x100 for i82527 chips or
#define IO_RANGE 0x400
/**
- * template_request_io: - reserve io memory
- * @io_addr: The reserved memory starts at @io_addr, wich is the module
- * parameter @io.
+ * template_request_io: - reserve io or memory range for can board
+ * @candev: pointer to candevice/board which asks for io. Field @io_addr
+ * of @candev is used in most cases to define start of the range
*
* The function template_request_io() is used to reserve the io-memory. If your
* hardware uses a dedicated memory range as hardware control registers you
* Return Value: The function returns zero on success or %-ENODEV on failure
* File: src/template.c
*/
-int pcm3680_request_io(unsigned long io_addr)
+int pcm3680_request_io(struct candevice_t *candev)
{
unsigned long remap_addr;
- if (!request_mem_region(io_addr,IO_RANGE,DEVICE_NAME " - pcm3680")) {
- CANMSG("Unable to request IO-memory: 0x%lx\n",io_addr);
+ if (!can_request_mem_region(candev->io_addr,IO_RANGE,DEVICE_NAME " - pcm3680")) {
+ CANMSG("Unable to request IO-memory: 0x%lx\n",candev->io_addr);
return -ENODEV;
}
- if ( !( remap_addr = (long) ioremap( io_addr, IO_RANGE ) ) ) {
- CANMSG("Unable to access I/O memory at: 0x%lx\n", io_addr);
- release_mem_region(io_addr,IO_RANGE);
+ if ( !( remap_addr = (long) ioremap( candev->io_addr, IO_RANGE ) ) ) {
+ CANMSG("Unable to access I/O memory at: 0x%lx\n", candev->io_addr);
+ can_release_mem_region(candev->io_addr,IO_RANGE);
return -ENODEV;
}
- isa_base=remap_addr-io_addr;
-
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr, io_addr + IO_RANGE - 1);
+ can_base_addr_fixup(candev, remap_addr);
+ DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr, candev->io_addr + IO_RANGE - 1);
return 0;
}
/**
- * template_release_io - free reserved io-memory
- * @io_addr: Start of the memory range to be released.
+ * template_elease_io - free reserved io memory range
+ * @candev: pointer to candevice/board which releases io
*
* The function template_release_io() is used to free reserved io-memory.
* In case you have reserved more io memory, don't forget to free it here.
* Return Value: The function always returns zero
* File: src/template.c
*/
-int pcm3680_release_io(unsigned long io_addr)
+int pcm3680_release_io(struct candevice_t *candev)
{
- iounmap((void*)isa_base);
- release_mem_region(io_addr,IO_RANGE);
+ iounmap((void*)candev->dev_base_addr);
+ can_release_mem_region(candev->io_addr,IO_RANGE);
return 0;
}
/**
* template_reset - hardware reset routine
- * @card: Number of the hardware card.
+ * @candev: Pointer to candevice/board structure
*
* The function template_reset() is used to give a hardware reset. This is
* rather hardware specific so I haven't included example code. Don't forget to
* Return Value: The function returns zero on success or %-ENODEV on failure
* File: src/template.c
*/
-int pcm3680_reset(int card)
+int pcm3680_reset(struct candevice_t *candev)
{
int i=0;
struct chip_t *chip;
int chipnr;
DEBUGMSG("Resetting pcm3680 hardware ...\n");
- for(chipnr=0;chipnr<candevices_p[card]->nr_sja1000_chips;chipnr++) {
- chip=candevices_p[card]->chip[chipnr];
+ for(chipnr=0;chipnr<candev->nr_sja1000_chips;chipnr++) {
+ chip=candev->chip[chipnr];
pcm3680_write_register(MOD_RM, chip->chip_base_addr+SJAMOD);
udelay(1000);
pcm3680_write_register(0x00, chip->chip_base_addr + SJAIER);
#define NR_SJA1000 2
/**
- * template_init_hw_data - Initialze hardware cards
- * @card: Number of the hardware card.
+ * template_init_hw_data - Initialize hardware cards
+ * @candev: Pointer to candevice/board structure
*
* The function template_init_hw_data() is used to initialize the hardware
* structure containing information about the installed CAN-board.
* %RESET_ADDR represents the io-address of the hardware reset register.
* %NR_82527 represents the number of intel 82527 chips on the board.
* %NR_SJA1000 represents the number of philips sja1000 chips on the board.
- * The flags entry can currently only be %PROGRAMMABLE_IRQ to indicate that
+ * The flags entry can currently only be %CANDEV_PROGRAMMABLE_IRQ to indicate that
* the hardware uses programmable interrupts.
* Return Value: The function always returns zero
* File: src/template.c
*/
-int pcm3680_init_hw_data(int card)
+int pcm3680_init_hw_data(struct candevice_t *candev)
{
- candevices_p[card]->res_addr=RESET_ADDR;
- candevices_p[card]->nr_82527_chips=NR_82527;
- candevices_p[card]->nr_sja1000_chips=NR_SJA1000;
- candevices_p[card]->flags &= ~PROGRAMMABLE_IRQ;
+ candev->res_addr=RESET_ADDR;
+ candev->nr_82527_chips=NR_82527;
+ candev->nr_sja1000_chips=NR_SJA1000;
+ candev->nr_all_chips=NR_82527+NR_SJA1000;
+ candev->flags &= ~CANDEV_PROGRAMMABLE_IRQ;
return 0;
}
#define CHIP_TYPE "sja1000p"
/**
* template_init_chip_data - Initialize chips
- * @card: Number of the hardware card
+ * @candev: Pointer to candevice/board structure
* @chipnr: Number of the CAN chip on the hardware card
*
* The function template_init_chip_data() is used to initialize the hardware
* Return Value: The function always returns zero
* File: src/template.c
*/
-int pcm3680_init_chip_data(int card, int chipnr)
+int pcm3680_init_chip_data(struct candevice_t *candev, int chipnr)
{
- pcm3680_base_addr = candevices_p[card]->io_addr;
- candevices_p[card]->chip[chipnr]->chip_type=CHIP_TYPE;
- candevices_p[card]->chip[chipnr]->chip_base_addr=
- candevices_p[card]->io_addr + 0x200*chipnr;
- candevices_p[card]->chip[chipnr]->clock = 16000000;
- candevices_p[card]->chip[chipnr]->int_clk_reg = 0x0;
- candevices_p[card]->chip[chipnr]->int_bus_reg = 0x0;
- candevices_p[card]->chip[chipnr]->sja_cdr_reg = CDR_CBP | CDR_CLK_OFF;
- candevices_p[card]->chip[chipnr]->sja_ocr_reg = OCR_MODE_NORMAL |
+ candev->chip[chipnr]->chip_type=CHIP_TYPE;
+ candev->chip[chipnr]->chip_base_addr=
+ candev->io_addr + 0x200*chipnr;
+ candev->chip[chipnr]->clock = 16000000;
+ candev->chip[chipnr]->int_clk_reg = 0x0;
+ candev->chip[chipnr]->int_bus_reg = 0x0;
+ candev->chip[chipnr]->sja_cdr_reg = CDR_CBP | CDR_CLK_OFF;
+ candev->chip[chipnr]->sja_ocr_reg = OCR_MODE_NORMAL |
OCR_TX0_LH;
return 0;
/**
* template_init_obj_data - Initialize message buffers
- * @chipnr: Number of the CAN chip
+ * @chip: Pointer to chip specific structure
* @objnr: Number of the message buffer
*
* The function template_init_obj_data() is used to initialize the hardware
* Return Value: The function always returns zero
* File: src/template.c
*/
-int pcm3680_init_obj_data(int chipnr, int objnr)
+int pcm3680_init_obj_data(struct chip_t *chip, int objnr)
{
- chips_p[chipnr]->msgobj[objnr]->obj_base_addr=chips_p[chipnr]->chip_base_addr;
- chips_p[chipnr]->msgobj[objnr]->flags=0;
+ chip->msgobj[objnr]->obj_base_addr=chip->chip_base_addr;
return 0;
}
/**
* template_program_irq - program interrupts
- * @card: Number of the hardware card.
+ * @candev: Pointer to candevice/board structure
*
* The function template_program_irq() is used for hardware that uses
* programmable interrupts. If your hardware doesn't use programmable interrupts
- * you should not set the @candevices_t->flags entry to %PROGRAMMABLE_IRQ and
+ * you should not set the @candevices_t->flags entry to %CANDEV_PROGRAMMABLE_IRQ and
* leave this function unedited. Again this function is hardware specific so
* there's no example code.
* Return value: The function returns zero on success or %-ENODEV on failure
* File: src/template.c
*/
-int pcm3680_program_irq(int card)
+int pcm3680_program_irq(struct candevice_t *candev)
{
return 0;
}
*/
void pcm3680_write_register(unsigned char data, unsigned long address)
{
- writeb(data,isa_base+address);
+ writeb(data,address);
}
/**
*/
unsigned pcm3680_read_register(unsigned long address)
{
- return readb(isa_base+address);
+ return readb(address);
}
/* !!! Don't change this function !!! */
projects / lincan.git / blobdiff