X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/2a4663dd0b20d96d1ffe20993dd0c63ed2ca9f20..fc52afd2db4b338e8ca30467f475cba1f1e40ebd:/lincan/src/setup.c

diff --git a/lincan/src/setup.c b/lincan/src/setup.c
index 564b3c0..167ec2b 100644
--- a/lincan/src/setup.c
+++ b/lincan/src/setup.c
@@ -14,10 +14,16 @@
 #include "../include/setup.h"
 #include "../include/finish.h"
 
+#ifdef CAN_ENABLE_VME_SUPPORT
+#include "ca91c042.h"
+/* Modified version of ca91c042 driver can be found in
+ * components/comm/contrib directory. */
+#endif
+
 int init_hwspecops(struct candevice_t *candev, int *irqnum_p);
 int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p);
 int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudrate);
-int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int objnr);
+int init_obj_struct(struct candevice_t *candev, struct canchip_t *hostchip, int objnr);
 
 /**
  * can_checked_malloc - memory allocation with registering of requested blocks
@@ -272,7 +278,7 @@ int register_obj_struct(struct msgobj_t *obj, int minorbase)
  *
  * Return Value: returns negative number in the case of fail
  */
-int register_chip_struct(struct chip_t *chip, int minorbase)
+int register_chip_struct(struct canchip_t *chip, int minorbase)
 {
 	static int next_chip_slot=0;
 	int i;
@@ -397,7 +403,7 @@ int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p)
 
 	for (chipnr=0; chipnr < candev->nr_all_chips; chipnr++) {
 		int m=minor[*chan_param_idx_p+chipnr];
-		struct chip_t *chip=candev->chip[chipnr];
+		struct canchip_t *chip=candev->chip[chipnr];
 		int objnr;
 
 		register_chip_struct(chip, m);
@@ -445,15 +451,15 @@ int init_device_struct(int card, int *chan_param_idx_p, int *irq_param_idx_p)
  */
 int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudrate)
 {
-	struct chip_t *chip;
+	struct canchip_t *chip;
 	int objnr;
 	int ret;
 
-	candev->chip[chipnr]=(struct chip_t *)can_checked_malloc(sizeof(struct chip_t));
+	candev->chip[chipnr]=(struct canchip_t *)can_checked_malloc(sizeof(struct canchip_t));
 	if ((chip=candev->chip[chipnr])==NULL)
 		return -ENOMEM;
 
-        memset(chip, 0, sizeof(struct chip_t));
+        memset(chip, 0, sizeof(struct canchip_t));
 
 	chip->write_register=candev->hwspecops->write_register;
 	chip->read_register=candev->hwspecops->read_register;
@@ -492,7 +498,7 @@ int init_chip_struct(struct candevice_t *candev, int chipnr, int irq, long baudr
  *
  * Return Value: returns negative number in the case of fail
  */
-int init_obj_struct(struct candevice_t *candev, struct chip_t *hostchip, int objnr)
+int init_obj_struct(struct candevice_t *candev, struct canchip_t *hostchip, int objnr)
 {
 	struct canque_ends_t *qends;
 	struct msgobj_t *obj;
@@ -562,31 +568,57 @@ int init_hwspecops(struct candevice_t *candev, int *irqnum_p)
 
 #ifndef CAN_WITH_RTL
 
+/**
+ * can_default_irq_dispatch - the first level interrupt dispatch handler
+ * @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 canchip_t
+ * @regs: system dependent value pointing to registers stored in exception frame
+ * 
+ * File: src/setup.c
+ */
+can_irqreturn_t can_default_irq_dispatch(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int retval;
+	struct canchip_t *chip=(struct canchip_t *)dev_id;
+
+	retval=chip->chipspecops->irq_handler(irq, chip);
+	return CAN_IRQ_RETVAL(retval);
+}
+
 /**
  * can_chip_setup_irq - attaches chip to the system interrupt processing
  * @chip: pointer to CAN chip structure
  *
  * Return Value: returns negative number in the case of fail
  */
-int can_chip_setup_irq(struct chip_t *chip)
+int can_chip_setup_irq(struct canchip_t *chip)
 {
 	if(chip==NULL)
 		return -1;
 	if(!chip->chipspecops->irq_handler)
 		return 0;
+	if(chip->flags & CHIP_IRQ_CUSTOM)
+		return 1;
 			
 	if ((chip->flags & CHIP_IRQ_VME) == 0) {
-		if (request_irq(chip->chip_irq,chip->chipspecops->irq_handler,SA_SHIRQ,DEVICE_NAME,chip))
+		if (request_irq(chip->chip_irq,can_default_irq_dispatch,SA_SHIRQ,DEVICE_NAME,chip))
 			return -1;
 		else {
 			DEBUGMSG("Registered interrupt %d\n",chip->chip_irq);
 			chip->flags |= CHIP_IRQ_SETUP;
 		}
 	} else {
-#ifdef CAN_ENABLE_VME_SUPPORT		
-		/* TODO: Move here the irq setup from
-		 * unican_vme_request_io(). To do this, the VME bridge
-		 * driver should be modified. */
+#ifdef CAN_ENABLE_VME_SUPPORT
+		if (chip->chip_irq < 1 || chip->chip_irq > 255) {
+			CANMSG("Bad irq parameter. (1 <= irq <= 255).\n");
+			return -EINVAL;
+		}
+		
+		request_vmeirq(chip->chip_irq, can_default_irq_dispatch, chip);
+		DEBUGMSG("Registered VME interrupt vector %d\n",chip->chip_irq);
+		chip->flags |= CHIP_IRQ_SETUP;
 #endif
 	}
 	return 1;
@@ -597,16 +629,17 @@ int can_chip_setup_irq(struct chip_t *chip)
  * can_chip_free_irq - unregisters chip interrupt handler from the system
  * @chip: pointer to CAN chip structure
  */
-void can_chip_free_irq(struct chip_t *chip)
+void can_chip_free_irq(struct canchip_t *chip)
 {
 	if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)) {
+		if(chip->flags & CHIP_IRQ_CUSTOM)
+			return;
+
 		if ((chip->flags & CHIP_IRQ_VME) == 0)
 			free_irq(chip->chip_irq, chip);
 		else { 
 #ifdef CAN_ENABLE_VME_SUPPORT
-		/* TODO: Move here the irq cleanup from
-		 * unican_vme_release_io(). To do this, the VME bridge
-		 * driver should be modified. */
+			free_vmeirq(chip->chip_irq);
 #endif
 		}
 			chip->flags &= ~CHIP_IRQ_SETUP;