* New CAN queues 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
*/
#ifdef CAN_WITH_RTL
#include <rtl_malloc.h>
+#ifdef CAN_ENABLE_VME_SUPPORT
+#include "ca91c042.h"
+/* Modified version of ca91c042 driver can be found in
+ * components/comm/contrib directory. */
+#endif
+
+can_spinlock_t can_irq_manipulation_lock;
+
unsigned int can_rtl_isr( unsigned int irq_num, struct pt_regs *r )
{
- struct chip_t *chip;
+ struct canchip_t *chip;
struct candevice_t *candev;
int board_nr;
int chip_nr;
+ int irq2linux=0;
pthread_t thread=NULL;
DEBUGMSG("can_rtl_isr invoked for irq %d\n",irq_num);
set_bit(MSGOBJ_IRQ_REQUEST_b,&chip->pend_flags);
set_bit(MSGOBJ_WORKER_WAKE_b,&chip->pend_flags);
-
+ if(chip->flags & CHIP_IRQ_PCI)
+ irq2linux=1;
if(!chip->worker_thread) continue;
thread=chip->worker_thread;
pthread_kill(thread,RTL_SIGNAL_WAKEUP);
}
}
- /*rtl_global_pend_irq(irq_num);*/
+ if(irq2linux)
+ rtl_global_pend_irq(irq_num);
/*if(thread) rtl_reschedule_thread(thread);*/
void * can_chip_worker_thread(void *arg)
{
- struct chip_t *chip = (struct chip_t *) arg;
+ struct canchip_t *chip = (struct canchip_t *) arg;
struct msgobj_t *obj;
int ret, i;
int loop_cnt;
DEBUGMSG("IRQ_REQUEST processing ...\n");
loop_cnt = 100;
if(chip->chipspecops->irq_handler) do{
- ret=chip->chipspecops->irq_handler(chip->chip_irq,chip,NULL);
+ ret=chip->chipspecops->irq_handler(chip->chip_irq,chip);
}while(ret && --loop_cnt);
continue;
}
for(i=0;i<chip->max_objects;i++){
if((obj=chip->msgobj[i])==NULL)
continue;
- if(!can_msgobj_test_and_clear_fl(obj,TX_REQUEST))
- continue;
- DEBUGMSG("Calling wakeup_tx\n");
- chip->chipspecops->wakeup_tx(chip, obj);
+ if(can_msgobj_test_fl(obj,TX_REQUEST)) {
+ DEBUGMSG("Calling wakeup_tx\n");
+ chip->chipspecops->wakeup_tx(chip, obj);
+ }
+ if(can_msgobj_test_fl(obj,FILTCH_REQUEST)) {
+ DEBUGMSG("Calling filtch_rq\n");
+ if(chip->chipspecops->filtch_rq)
+ chip->chipspecops->filtch_rq(chip, obj);
+ }
}
continue;
}
/*re-enable chip IRQ, I am not sure, if this is required,
but it seems to not work without that */
- if(chip->chip_irq>=0)
- can_enable_irq(chip->chip_irq);
+ if(chip->chip_irq>=0) {
+ if ((chip->flags & CHIP_IRQ_VME) == 0) can_enable_irq(chip->chip_irq);
+ #ifdef CAN_ENABLE_VME_SUPPORT
+ else tundra_rtl_enable_pci_irq();
+ /* FIXME: Bad practice. Doesn't work with more
+ * than one card. */
+ #endif /*CAN_ENABLE_VME_SUPPORT*/
+
+ }
RTL_MARK_SUSPENDED(pthread_self());
if(test_and_clear_bit(MSGOBJ_WORKER_WAKE_b,&chip->pend_flags)){
}
-int can_chip_setup_irq(struct chip_t *chip)
+int can_chip_setup_irq(struct canchip_t *chip)
{
int ret;
+ struct sched_param sched_param;
+ pthread_attr_t attrib;
+ pthread_attr_t *attrib_p=NULL;
if(chip==NULL)
return -1;
- if(chip->chipspecops->irq_handler){
- if (rtl_request_irq(chip->chip_irq,can_rtl_isr))
+
+ if(can_rtl_priority>=0){
+ pthread_attr_init(&attrib);
+ sched_param.sched_priority = can_rtl_priority;
+ pthread_attr_setschedparam(&attrib, &sched_param);
+ /* pthread_attr_setschedpolicy(&attrib, SCHED_FIFO); */
+ attrib_p=&attrib;
+ }
+
+ if(chip->chipspecops->irq_handler && !(chip->flags & CHIP_IRQ_CUSTOM)){
+ int (*my_request_irq)(unsigned int vector, unsigned int (*rtl_handler)(unsigned int irq, struct pt_regs *regs));
+#ifdef CAN_ENABLE_VME_SUPPORT
+ if ((chip->flags & CHIP_IRQ_VME) != 0)
+ my_request_irq = rtl_request_vmeirq;
+ else
+#endif
+ my_request_irq = rtl_request_irq;
+
+ if (my_request_irq(chip->chip_irq,can_rtl_isr))
return -1;
else {
DEBUGMSG("Registered interrupt %d\n",chip->chip_irq);
chip->flags |= CHIP_IRQ_SETUP;
}
}
- ret=pthread_create(&chip->worker_thread, NULL, can_chip_worker_thread, chip);
+ ret=pthread_create(&chip->worker_thread, attrib_p, can_chip_worker_thread, chip);
if(ret<0) chip->worker_thread=NULL;
return ret;
}
-void can_chip_free_irq(struct chip_t *chip)
+void can_chip_free_irq(struct canchip_t *chip)
{
if(chip->worker_thread)
pthread_delete_np(chip->worker_thread);
- if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)) {
- rtl_free_irq(chip->chip_irq);
+ if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)
+ && !(chip->flags & CHIP_IRQ_CUSTOM)) {
+ int (*my_free_irq)(unsigned int vector);
+#ifdef CAN_ENABLE_VME_SUPPORT
+ if ((chip->flags & CHIP_IRQ_VME) != 0)
+ my_free_irq = rtl_free_vmeirq;
+ else
+#endif
+ my_free_irq = rtl_free_irq;
+ my_free_irq(chip->chip_irq);
chip->flags &= ~CHIP_IRQ_SETUP;
}
}