/* pccan.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/irq.h>
#include <asm/errno.h>
#include <asm/io.h>
+#include <asm/irq.h>
#include "../include/main.h"
#include "../include/pccan.h"
#include "../include/i82527.h"
#include "../include/sja1000.h"
-int pccanf_request_io(unsigned long io_addr)
+int pccanf_request_io(struct candevice_t *candev)
{
- if (check_region(io_addr+0x4000,0x20)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x4000);
+ if (!can_request_io_region(candev->io_addr+0x4000,0x20,DEVICE_NAME)) {
+ CANMSG("Unable to open port: 0x%lx\n",candev->io_addr+0x4000);
return -ENODEV;
}
- else if (check_region(io_addr+0x6000,0x04)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x6000);
+ else if (!can_request_io_region(candev->io_addr+0x6000,0x04,DEVICE_NAME)) {
+ can_release_io_region(candev->io_addr+0x4000,0x20);
+ CANMSG("Unable to open port: 0x%lx\n",candev->io_addr+0x6000);
return -ENODEV;
}
else {
- request_region(io_addr+0x4000,0x20,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x4000, io_addr+0x4000+0x20-1);
- request_region(io_addr+0x6000,0x04,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x6000, io_addr+0x6000+0x04-1);
+ DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr+0x4000, candev->io_addr+0x4000+0x20-1);
+ DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr+0x6000, candev->io_addr+0x6000+0x04-1);
}
return 0;
}
-int pccand_request_io(unsigned long io_addr)
+int pccand_request_io(struct candevice_t *candev)
{
- if (pccanf_request_io(io_addr))
+ if (pccanf_request_io(candev))
return -ENODEV;
- if (check_region(io_addr+0x5000,0x20)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x5000);
+ if (!can_request_io_region(candev->io_addr+0x5000,0x20,DEVICE_NAME)) {
+ pccanf_release_io(candev);
+ CANMSG("Unable to open port: 0x%lx\n",candev->io_addr+0x5000);
return -ENODEV;
}
else {
- request_region(io_addr+0x5000,0x20,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x5000, io_addr+0x5000+0x20-1);
+ DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", candev->io_addr+0x5000, candev->io_addr+0x5000+0x20-1);
}
return 0;
}
-int pccanq_request_io(unsigned long io_addr)
+int pccanq_request_io(struct candevice_t *candev)
{
- if (pccand_request_io(io_addr))
+ unsigned long io_addr;
+ int i;
+
+ if (pccand_request_io(candev))
return -ENODEV;
- if (check_region(io_addr+0x2000,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x2000);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x2400,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x2400);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x2800,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x2800);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x2C00,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x2C00);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x3000,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x3000);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x3400,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x3400);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x3800,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x3800);
- return -ENODEV;
- }
- else if (check_region(io_addr+0x3C00,0x40)) {
- CANMSG("Unable to open port: 0x%lx\n",io_addr+0x3C00);
- return -ENODEV;
- }
- else {
- request_region(io_addr+0x2000,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x2000, io_addr+0x2000+0x40-1);
- request_region(io_addr+0x2400,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x2400, io_addr+0x2400+0x40-1);
- request_region(io_addr+0x2800,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x2800, io_addr+0x2800+0x40-1);
- request_region(io_addr+0x2C00,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x2C00, io_addr+0x2C00+0x40-1);
- request_region(io_addr+0x3000,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x3000, io_addr+0x3000+0x40-1);
- request_region(io_addr+0x3400,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x3400, io_addr+0x3400+0x40-1);
- request_region(io_addr+0x3800,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x3800, io_addr+0x3800+0x40-1);
- request_region(io_addr+0x3C00,0x40,DEVICE_NAME);
- DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr+0x3C00, io_addr+0x3C00+0x40-1);
+ for(i=0, io_addr=candev->io_addr+0x2000; i<8; i++, io_addr+=0x400) {
+ if (!can_request_io_region(io_addr,0x40,DEVICE_NAME)) {
+ CANMSG("Unable to open port: 0x%lx\n",io_addr);
+ while(i--){
+ io_addr-=0x400;
+ can_release_io_region(io_addr,0x40);
+ }
+ pccand_release_io(candev);
+ return -ENODEV;
+ }
+ DEBUGMSG("Registered IO-memory: 0x%lx - 0x%lx\n", io_addr, io_addr+0x40-1);
}
-
return 0;
}
-int pccanf_release_io(unsigned long io_addr)
+int pccanf_release_io(struct candevice_t *candev)
{
- release_region(io_addr+0x4000,0x20);
- release_region(io_addr+0x6000,0x04);
+ can_release_io_region(candev->io_addr+0x4000,0x20);
+ can_release_io_region(candev->io_addr+0x6000,0x04);
return 0;
}
-int pccand_release_io(unsigned long io_addr)
+int pccand_release_io(struct candevice_t *candev)
{
- pccanf_release_io(io_addr);
- release_region(io_addr+0x5000,0x20);
+ pccanf_release_io(candev);
+ can_release_io_region(candev->io_addr+0x5000,0x20);
return 0;
}
-int pccanq_release_io(unsigned long io_addr)
+int pccanq_release_io(struct candevice_t *candev)
{
- pccand_release_io(io_addr);
- release_region(io_addr+0x2000,0x40);
- release_region(io_addr+0x2400,0x40);
- release_region(io_addr+0x2800,0x40);
- release_region(io_addr+0x2C00,0x40);
- release_region(io_addr+0x3000,0x40);
- release_region(io_addr+0x3400,0x40);
- release_region(io_addr+0x3800,0x40);
- release_region(io_addr+0x3C00,0x40);
+ unsigned long io_addr;
+ int i;
+
+ pccand_release_io(candev);
+
+ for(i=0, io_addr=candev->io_addr+0x2000; i<8; i++, io_addr+=0x400) {
+ can_release_io_region(io_addr,0x40);
+ }
return 0;
}
-int pccanf_reset(int card)
+int pccanf_reset(struct candevice_t *candev)
{
int i=0;
DEBUGMSG("Resetting pccanf/s hardware ...\n");
while (i < 1000000) {
i++;
- outb(0x00,candevices_p[card]->res_addr);
+ outb(0x00,candev->res_addr);
}
- outb(0x01,candevices_p[card]->res_addr);
- outb(0x00,candevices_p[card]->chip[0]->chip_base_addr+SJACR);
+ outb(0x01,candev->res_addr);
+ outb(0x00,candev->chip[0]->chip_base_addr+SJACR);
/* Check hardware reset status */
i=0;
- while ( (inb(candevices_p[card]->chip[0]->chip_base_addr+SJACR) & CR_RR)
+ while ( (inb(candev->chip[0]->chip_base_addr+SJACR) & CR_RR)
&& (i<=15) ) {
udelay(20000);
i++;
return 0;
}
-int pccand_reset(int card)
+int pccand_reset(struct candevice_t *candev)
{
int i=0,chip_nr=0;
DEBUGMSG("Resetting pccan-d hardware ...\n");
while (i < 1000000) {
i++;
- outb(0x00,candevices_p[card]->res_addr);
+ outb(0x00,candev->res_addr);
}
- outb(0x01,candevices_p[card]->res_addr);
- outb(0x00,candevices_p[card]->chip[0]->chip_base_addr+SJACR);
- outb(0x00,candevices_p[card]->chip[1]->chip_base_addr+SJACR);
+ outb(0x01,candev->res_addr);
+ outb(0x00,candev->chip[0]->chip_base_addr+SJACR);
+ outb(0x00,candev->chip[1]->chip_base_addr+SJACR);
/* Check hardware reset status */
i=0;
for (chip_nr=0; chip_nr<2; chip_nr++) {
i=0;
- while ( (inb(candevices_p[card]->chip[chip_nr]->chip_base_addr +
+ while ( (inb(candev->chip[chip_nr]->chip_base_addr +
SJACR) & CR_RR) && (i<=15) ) {
udelay(20000);
i++;
return 0;
}
-int pccanq_reset(int card)
+int pccanq_reset(struct candevice_t *candev)
{
int i=0,chip_nr=0;
for (i=0; i<4; i++)
- disable_irq(candevices_p[card]->chip[i]->chip_irq);
+ disable_irq(candev->chip[i]->chip_irq);
DEBUGMSG("Resetting pccan-q hardware ...\n");
while (i < 100000) {
i++;
- outb(0x00,candevices_p[card]->res_addr);
+ outb(0x00,candev->res_addr);
}
- outb_p(0x01,candevices_p[card]->res_addr);
+ outb_p(0x01,candev->res_addr);
- outb(0x00,candevices_p[card]->chip[2]->chip_base_addr+SJACR);
- outb(0x00,candevices_p[card]->chip[3]->chip_base_addr+SJACR);
+ outb(0x00,candev->chip[2]->chip_base_addr+SJACR);
+ outb(0x00,candev->chip[3]->chip_base_addr+SJACR);
/* Check hardware reset status */
for (chip_nr=0; chip_nr<2; chip_nr++) {
i=0;
- while( (inb(candevices_p[card]->chip[chip_nr]->chip_base_addr +
+ while( (inb(candev->chip[chip_nr]->chip_base_addr +
iCPU) & iCPU_RST) && (i<=15) ) {
udelay(20000);
i++;
}
for (chip_nr=2; chip_nr<4; chip_nr++) {
i=0;
- while( (inb(candevices_p[card]->chip[chip_nr]->chip_base_addr +
+ while( (inb(candev->chip[chip_nr]->chip_base_addr +
SJACR) & CR_RR) && (i<=15) ) {
udelay(20000);
i++;
}
for (i=0; i<4; i++)
- enable_irq(candevices_p[card]->chip[i]->chip_irq);
+ enable_irq(candev->chip[i]->chip_irq);
return 0;
}
-int pccan_init_hw_data(int card)
+int pccan_init_hw_data(struct candevice_t *candev)
{
- candevices_p[card]->res_addr=candevices_p[card]->io_addr+0x6001;
- candevices_p[card]->flags |= PROGRAMMABLE_IRQ;
+ candev->res_addr=candev->io_addr+0x6001;
+ candev->flags |= PROGRAMMABLE_IRQ;
- if (!strcmp(candevices_p[card]->hwname,"pccan-q")) {
- candevices_p[card]->nr_82527_chips=2;
- candevices_p[card]->nr_sja1000_chips=2;
+ if (!strcmp(candev->hwname,"pccan-q")) {
+ candev->nr_82527_chips=2;
+ candev->nr_sja1000_chips=2;
+ candev->nr_all_chips=4;
}
- if (!strcmp(candevices_p[card]->hwname,"pccan-f") |
- !strcmp(candevices_p[card]->hwname,"pccan-s")) {
- candevices_p[card]->nr_82527_chips=0;
- candevices_p[card]->nr_sja1000_chips=1;
+ if (!strcmp(candev->hwname,"pccan-f") |
+ !strcmp(candev->hwname,"pccan-s")) {
+ candev->nr_82527_chips=0;
+ candev->nr_sja1000_chips=1;
+ candev->nr_all_chips=1;
}
- if (!strcmp(candevices_p[card]->hwname,"pccan-d")) {
- candevices_p[card]->nr_82527_chips=0;
- candevices_p[card]->nr_sja1000_chips=2;
+ if (!strcmp(candev->hwname,"pccan-d")) {
+ candev->nr_82527_chips=0;
+ candev->nr_sja1000_chips=2;
+ candev->nr_all_chips=2;
}
return 0;
}
-int pccan_init_chip_data(int card, int chipnr)
+int pccan_init_chip_data(struct candevice_t *candev, int chipnr)
{
- if (!strcmp(candevices_p[card]->hwname,"pccan-q")) {
+ if (!strcmp(candev->hwname,"pccan-q")) {
if (chipnr<2) {
- candevices_p[card]->chip[chipnr]->chip_type="i82527";
- candevices_p[card]->chip[chipnr]->flags = SEGMENTED;
- candevices_p[card]->chip[chipnr]->int_cpu_reg=iCPU_DSC;
- candevices_p[card]->chip[chipnr]->int_clk_reg=iCLK_SL1;
- candevices_p[card]->chip[chipnr]->int_bus_reg=iBUS_CBY;
- candevices_p[card]->chip[chipnr]->sja_cdr_reg = 0;
- candevices_p[card]->chip[chipnr]->sja_ocr_reg = 0;
+ candev->chip[chipnr]->chip_type="i82527";
+ candev->chip[chipnr]->flags = CHIP_SEGMENTED;
+ candev->chip[chipnr]->int_cpu_reg=iCPU_DSC;
+ candev->chip[chipnr]->int_clk_reg=iCLK_SL1;
+ candev->chip[chipnr]->int_bus_reg=iBUS_CBY;
+ candev->chip[chipnr]->sja_cdr_reg = 0;
+ candev->chip[chipnr]->sja_ocr_reg = 0;
}
else{
- candevices_p[card]->chip[chipnr]->chip_type="sja1000";
- candevices_p[card]->chip[chipnr]->flags = 0;
- candevices_p[card]->chip[chipnr]->int_cpu_reg = 0;
- candevices_p[card]->chip[chipnr]->int_clk_reg = 0;
- candevices_p[card]->chip[chipnr]->int_bus_reg = 0;
- candevices_p[card]->chip[chipnr]->sja_cdr_reg =
+ candev->chip[chipnr]->chip_type="sja1000";
+ candev->chip[chipnr]->flags = 0;
+ candev->chip[chipnr]->int_cpu_reg = 0;
+ candev->chip[chipnr]->int_clk_reg = 0;
+ candev->chip[chipnr]->int_bus_reg = 0;
+ candev->chip[chipnr]->sja_cdr_reg =
CDR_CLK_OFF;
- candevices_p[card]->chip[chipnr]->sja_ocr_reg =
+ candev->chip[chipnr]->sja_ocr_reg =
OCR_MODE_NORMAL | OCR_TX0_LH;
}
- candevices_p[card]->chip[chipnr]->chip_base_addr=0x1000*chipnr+0x2000+candevices_p[card]->io_addr;
+ candev->chip[chipnr]->chip_base_addr=0x1000*chipnr+0x2000+candev->io_addr;
}
else {
- candevices_p[card]->chip[chipnr]->chip_type="sja1000";
- candevices_p[card]->chip[chipnr]->chip_base_addr=0x1000*chipnr+0x4000+candevices_p[card]->io_addr;
- candevices_p[card]->chip[chipnr]->flags = 0;
- candevices_p[card]->chip[chipnr]->int_cpu_reg = 0;
- candevices_p[card]->chip[chipnr]->int_clk_reg = 0;
- candevices_p[card]->chip[chipnr]->int_bus_reg = 0;
- candevices_p[card]->chip[chipnr]->sja_cdr_reg = CDR_CLK_OFF;
- candevices_p[card]->chip[chipnr]->sja_ocr_reg =
+ candev->chip[chipnr]->chip_type="sja1000";
+ candev->chip[chipnr]->chip_base_addr=0x1000*chipnr+0x4000+candev->io_addr;
+ candev->chip[chipnr]->flags = 0;
+ candev->chip[chipnr]->int_cpu_reg = 0;
+ candev->chip[chipnr]->int_clk_reg = 0;
+ candev->chip[chipnr]->int_bus_reg = 0;
+ candev->chip[chipnr]->sja_cdr_reg = CDR_CLK_OFF;
+ candev->chip[chipnr]->sja_ocr_reg =
OCR_MODE_NORMAL | OCR_TX0_LH;
}
- candevices_p[card]->chip[chipnr]->clock = 16000000;
+ candev->chip[chipnr]->clock = 16000000;
return 0;
}
-int pccan_init_obj_data(int chipnr, int objnr)
+int pccan_init_obj_data(struct chip_t *chip, int objnr)
{
- if (!strcmp(chips_p[chipnr]->chip_type,"sja1000")) {
- chips_p[chipnr]->msgobj[objnr]->obj_base_addr=chips_p[chipnr]->chip_base_addr;
- chips_p[chipnr]->msgobj[objnr]->flags=0;
+ if (!strcmp(chip->chip_type,"sja1000")) {
+ chip->msgobj[objnr]->obj_base_addr=chip->chip_base_addr;
+ chip->msgobj[objnr]->flags=0;
}
- else {
- chips_p[chipnr]->msgobj[objnr]->obj_base_addr=chips_p[chipnr]->chip_base_addr+(objnr+1)*0x10+(int)((objnr+1)/4)*0x3c0;
- chips_p[chipnr]->msgobj[objnr]->flags=0;
+ else { /* The spacing for this card is 0x3c0 */
+ chip->msgobj[objnr]->obj_base_addr=chip->chip_base_addr+(objnr+1)*0x10+(int)((objnr+1)/4)*0x3c0;
+ chip->msgobj[objnr]->flags=0;
}
return 0;
}
-int pccan_program_irq(int card)
+int pccan_program_irq(struct candevice_t *candev)
{
#define IRQ9 0x01
#define IRQ3 0x02
int i;
for (i=0; i<4; i++) {
- switch (candevices_p[card]->chip[i]->chip_irq) {
+ switch (candev->chip[i]->chip_irq) {
case 0: {
break;
}
}
}
}
- outb(irq_reg_value,0x6000+candevices_p[card]->io_addr);
+ outb(irq_reg_value,0x6000+candev->io_addr);
DEBUGMSG("Configured pccan hardware interrupts\n");
- outb(0x80,0x6000+candevices_p[card]->io_addr+0x02);
+ outb(0x80,0x6000+candev->io_addr+0x02);
DEBUGMSG("Selected pccan on-board 16 MHz oscillator\n");
return 0;
projects / lincan.git / blobdiff