* Written for new CAN driver version by Pavel Pisa - OCERA team member
* email:pisa@cmp.felk.cvut.cz
* This software is released under the GPL-License.
- * Version lincan-0.2 9 Jul 2003
+ * Version lincan-0.3 17 Jun 2004
*/
#include "../include/can.h"
/* * * unican Chip Functionality * * */
-int unican_enable_configuration(struct chip_t *chip)
+int unican_enable_configuration(struct canchip_t *chip)
{
return 0;
}
-int unican_disable_configuration(struct chip_t *chip)
+int unican_disable_configuration(struct canchip_t *chip)
{
return 0;
}
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_chip_config(struct chip_t *chip)
+int unican_chip_config(struct canchip_t *chip)
{
int ret;
sCAN_CARD *chipext = (sCAN_CARD *)chip->chip_data;
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_extended_mask(struct chip_t *chip, unsigned long code, unsigned long mask)
+int unican_extended_mask(struct canchip_t *chip, unsigned long code, unsigned long mask)
{
return 0;
}
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_baud_rate(struct chip_t *chip, int rate, int clock, int sjw,
+int unican_baud_rate(struct canchip_t *chip, int rate, int clock, int sjw,
int sampl_pt, int flags)
{
int ret;
*
* File: src/unican.c
*/
-void unican_read(struct chip_t *chip, struct msgobj_t *obj) {
+void unican_read(struct canchip_t *chip, struct msgobj_t *obj) {
sCAN_CARD *chipext = (sCAN_CARD *)chip->chip_data;
__u16 *ptr16;
__u16 u;
* Positive value indicates immediate reception of message.
* File: src/unican.c
*/
-int unican_pre_read_config(struct chip_t *chip, struct msgobj_t *obj)
+int unican_pre_read_config(struct canchip_t *chip, struct msgobj_t *obj)
{
return 0;
}
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_pre_write_config(struct chip_t *chip, struct msgobj_t *obj,
+int unican_pre_write_config(struct canchip_t *chip, struct msgobj_t *obj,
struct canmsg_t *msg)
{
return 0;
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_send_msg(struct chip_t *chip, struct msgobj_t *obj,
+int unican_send_msg(struct canchip_t *chip, struct msgobj_t *obj,
struct canmsg_t *msg)
{
return 0;
* Zero value indicates finishing of all issued transmission requests.
* File: src/unican.c
*/
-int unican_check_tx_stat(struct chip_t *chip)
+int unican_check_tx_stat(struct canchip_t *chip)
{
return 0;
}
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_set_btregs(struct chip_t *chip, unsigned short btr0,
+int unican_set_btregs(struct canchip_t *chip, unsigned short btr0,
unsigned short btr1)
{
int ret;
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_start_chip(struct chip_t *chip)
+int unican_start_chip(struct canchip_t *chip)
{
return 0;
}
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_stop_chip(struct chip_t *chip)
+int unican_stop_chip(struct canchip_t *chip)
{
return 0;
}
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_remote_request(struct chip_t *chip, struct msgobj_t *obj)
+int unican_remote_request(struct canchip_t *chip, struct msgobj_t *obj)
{
CANMSG("unican_remote_request not implemented\n");
return -ENOSYS;
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_standard_mask(struct chip_t *chip, unsigned short code,
+int unican_standard_mask(struct canchip_t *chip, unsigned short code,
unsigned short mask)
{
CANMSG("unican_standard_mask not implemented\n");
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_clear_objects(struct chip_t *chip)
+int unican_clear_objects(struct canchip_t *chip)
{
CANMSG("unican_clear_objects not implemented\n");
return -ENOSYS;
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_config_irqs(struct chip_t *chip, short irqs)
+int unican_config_irqs(struct canchip_t *chip, short irqs)
{
CANMSG("unican_config_irqs not implemented\n");
* unican_irq_write_handler() for transmit events.
* File: src/unican.c
*/
-void unican_irq_write_handler(struct chip_t *chip, struct msgobj_t *obj)
+void unican_irq_write_handler(struct canchip_t *chip, struct msgobj_t *obj)
{
int cmd;
sCAN_CARD *chipext = (sCAN_CARD *)chip->chip_data;
}
-void unican_irq_sync_activities(struct chip_t *chip, struct msgobj_t *obj)
+void unican_irq_sync_activities(struct canchip_t *chip, struct msgobj_t *obj)
{
while(!can_msgobj_test_and_set_fl(obj,TX_LOCK)) {
/**
* unican_irq_handler: - interrupt service routine
* @irq: interrupt vector number, this value is system specific
- * @dev_id: driver private pointer registered at time of request_irq() call.
- * The CAN driver uses this pointer to store relationship of interrupt
- * to chip state structure - @struct chip_t
- * @regs: system dependent value pointing to registers stored in exception frame
+ * @chip: pointer to chip state structure
*
* Interrupt handler is activated when state of CAN controller chip changes,
* there is message to be read or there is more space for new messages or
* message queues.
* File: src/unican.c
*/
-can_irqreturn_t unican_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+int unican_irq_handler(int irq, struct canchip_t *chip)
{
- struct chip_t *chip=(struct chip_t *)dev_id;
sCAN_CARD *chipext = (sCAN_CARD *)chip->chip_data;
struct msgobj_t *obj=chip->msgobj[0];
__u16 status;
if(!(chip->flags&CHIP_CONFIGURED)) {
CANMSG("unican_irq_handler: called for non-configured device\n");
- return CAN_IRQ_NONE;
+ return CANCHIP_IRQ_NONE;
}
- if (cl2_get_status(chipext, &status) == CL2_NO_REQUEST)
- return CAN_IRQ_NONE;
+ if (cl2_get_status(chipext, &status) == CL2_NO_REQUEST) {
+ /* Reenable interrupts generation, this has to be even there,
+ * because irq_accept disables interrupts
+ */
+ cl2_gen_interrupt(chipext);
+ return CANCHIP_IRQ_NONE;
+ }
cl2_clear_interrupt(chipext);
unican_read(chip, obj);
}
+ /* Reenable interrupts generation */
cl2_gen_interrupt(chipext);
- return CAN_IRQ_HANDLED;
+ return CANCHIP_IRQ_HANDLED;
}
+/**
+ * unican_irq_accept: - fast irq accept routine, blocks further interrupts
+ * @irq: interrupt vector number, this value is system specific
+ * @chip: pointer to chip state structure
+ *
+ * This routine only accepts interrupt reception and stops further
+ * incoming interrupts, but does not handle situation causing interrupt.
+ * File: src/unican.c
+ */
+int unican_irq_accept(int irq, struct canchip_t *chip)
+{
+ sCAN_CARD *chipext = (sCAN_CARD *)chip->chip_data;
+
+ cl2_clear_interrupt(chipext);
+
+ return CANCHIP_IRQ_ACCEPTED;
+}
+
/*void unican_do_tx_timeout(unsigned long data)
{
struct msgobj_t *obj=(struct msgobj_t *)data;
* Return Value: negative value reports error.
* File: src/unican.c
*/
-int unican_wakeup_tx(struct chip_t *chip, struct msgobj_t *obj)
+int unican_wakeup_tx(struct canchip_t *chip, struct msgobj_t *obj)
{
can_preempt_disable();
{
int ret;
int i;
- struct chip_t *chip = candev->chip[0];
+ struct canchip_t *chip = candev->chip[0];
sCAN_CARD *chipext;
return 0;
}
-#define CHIP_TYPE "unican"
-
/**
* unican_init_chip_data - Initialize chips
* @candev: Pointer to candevice/board structure
*/
int unican_init_chip_data(struct candevice_t *candev, int chipnr)
{
- struct chip_t *chip = candev->chip[chipnr];
- chip->chip_type = CHIP_TYPE;
+ struct canchip_t *chip = candev->chip[chipnr];
+ chip->chip_type = "unican";
chip->chip_base_addr = 0;
chip->clock = 10000000;
chip->int_clk_reg = 0x0;
chip->chipspecops->start_chip=unican_start_chip;
chip->chipspecops->stop_chip=unican_stop_chip;
chip->chipspecops->irq_handler=unican_irq_handler;
+ chip->chipspecops->irq_accept=unican_irq_accept;
return 0;
}
* Return Value: The function always returns zero
* File: src/unican.c
*/
-int unican_init_obj_data(struct chip_t *chip, int objnr)
+int unican_init_obj_data(struct canchip_t *chip, int objnr)
{
struct msgobj_t *obj=chip->msgobj[objnr];
obj->obj_base_addr=chip->chip_base_addr;
int unican_pci_request_io(struct candevice_t *candev)
{
+ unsigned long remap_addr;
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))
if(pci_request_region(candev->sysdevptr.pcidev, 0, "unican_pci") != 0){
CANMSG("Request of Unican PCI range failed\n");
}
#endif /*(LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))*/
+ candev->dev_base_addr=pci_resource_start(candev->sysdevptr.pcidev,0);
+ candev->io_addr=candev->dev_base_addr;
+ candev->res_addr=candev->dev_base_addr;
+
+ if ( !( remap_addr = (long) ioremap( candev->io_addr, IO_RANGE ) ) ) {
+ CANMSG("Unable to access I/O memory at: 0x%lx\n", candev->io_addr);
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))
+ pci_release_region(candev->sysdevptr.pcidev, 0);
+ #else /*(LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))*/
+ pci_release_regions(candev->sysdevptr.pcidev);
+ #endif /*(LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))*/
+ 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);
+ DEBUGMSG("VMA: dev_base_addr: 0x%lx chip_base_addr: 0x%lx\n",
+ candev->dev_base_addr, candev->chip[0]->chip_base_addr);
+
return 0;
}
int unican_pci_release_io(struct candevice_t *candev)
{
+ iounmap((void*)candev->dev_base_addr);
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))
pci_release_region(candev->sysdevptr.pcidev, 0);
#else /*(LINUX_VERSION_CODE > KERNEL_VERSION(2,4,21))*/
printk(KERN_CRIT "Unican PCI region 0 is not MEM\n");
return -EIO;
}
- candev->dev_base_addr=pci_resource_start(pcidev,0); /*S5920*/
+ candev->dev_base_addr=pci_resource_start(pcidev,0);
candev->io_addr=candev->dev_base_addr;
candev->res_addr=candev->dev_base_addr;
projects / lincan.git / blobdiff