/* 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 "../include/i82527.h"
#include "../include/sja1000p.h"
-/* 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 int pcm3680_base_addr;
+#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 */
/*
* 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 0x20 for sja1000 chips in basic CAN mode.
*/
-#define IO_RANGE 0x200
+#define IO_RANGE 0x400
/**
* template_request_io: - reserve io memory
* 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)
{
- if (check_region(io_addr,IO_RANGE)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr);
+ unsigned long remap_addr;
+ if (!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;
}
- else {
- request_region(io_addr,IO_RANGE,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr, io_addr + IO_RANGE - 1);
+ if ( !( remap_addr = (long) ioremap( candev->io_addr, IO_RANGE ) ) ) {
+ CANMSG("Unable to access I/O memory at: 0x%lx\n", candev->io_addr);
+ release_mem_region(candev->io_addr,IO_RANGE);
+ return -ENODEV;
+
}
+ 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;
}
* 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)
{
- release_region(io_addr,IO_RANGE);
-
+ iounmap((void*)candev->dev_base_addr);
+ release_mem_region(candev->io_addr,IO_RANGE);
return 0;
}
* 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;
-
-// DEBUGMSG("Resetting pcm3680 hardware ...\n");
-// pcm3680_write_register(0x01, candevices_p[card]->io_addr +
-// 0x100); // Write arbitrary data to reset mem
-// pcm3680_write_register(0x01, candevices_p[card]->io_addr +
-// 0x300); // Write arbitrary data to reset mem
-// udelay(20000);
-
-// pcm3680_write_register(0x00, candevices_p[card]->io_addr + SJACR);
-// pcm3680_write_register(0x00, candevices_p[card]->io_addr + SJACR+0x200);
-
- /* Check hardware reset status chip 0 */
-/* i=0;
- while ( (pcm3680_read_register(candevices_p[card]->io_addr + SJACR)
- & CR_RR) && (i<=15) ) {
- udelay(20000);
- i++;
- }
- if (i>=15) {
- CANMSG("Reset status timeout!\n");
- CANMSG("Please check your hardware.\n");
- return -ENODEV;
- }
- else
- DEBUGMSG("Chip[0] reset status ok.\n");
-*/
- /* Check hardware reset status chip 1 */
-/* i=0;
- while ( (pcm3680_read_register( candevices_p[card]->io_addr + SJACR +
- 0x200) & CR_RR) && (i<=15) ) {
- udelay(20000);
- i++;
- }
- if (i>=15) {
- CANMSG("Reset status timeout!\n");
- CANMSG("Please check your hardware.\n");
- return -ENODEV;
+ int i=0;
+ struct chip_t *chip;
+ int chipnr;
+
+ DEBUGMSG("Resetting pcm3680 hardware ...\n");
+ 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);
+ /* Write arbitrary data to reset chip */
+ pcm3680_write_register(0x01, chip->chip_base_addr + 0x100);
+ udelay(1000);
+ i=20;
+ while (pcm3680_read_register(chip->chip_base_addr+SJAMOD)&MOD_RM){
+ if(!i--) return -ENODEV;
+ udelay(1000);
+ pcm3680_write_register(0, chip->chip_base_addr+SJAMOD);
+ }
+ udelay(1000);
+ pcm3680_write_register(CDR_PELICAN, chip->chip_base_addr+SJACDR);
+ pcm3680_write_register(0x00, chip->chip_base_addr + SJAIER);
}
- else
- DEBUGMSG("Chip[1] reset status ok.\n");
-*/
+
return 0;
}
#define RESET_ADDR 0x100
#define NR_82527 0
-#define NR_SJA1000 1
+#define NR_SJA1000 2
/**
* template_init_hw_data - Initialze hardware cards
* 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 &= ~PROGRAMMABLE_IRQ;
return 0;
}
* 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;
- 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;
* 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;
+ chip->msgobj[objnr]->flags=0;
return 0;
}
* 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;
}
projects / lincan.git / blobdiff