From 9ae60d7db47fb42cb9e0a9a25e83711808936d7e Mon Sep 17 00:00:00 2001
From: wentasah <wentasah>
Date: Mon, 30 Aug 2004 19:43:19 +0000
Subject: [PATCH] Added support for VME bus under RT Linux.

---
 lincan/src/can_devrtl.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/lincan/src/can_devrtl.c b/lincan/src/can_devrtl.c
index 25b8b48..5db8b82 100644
--- a/lincan/src/can_devrtl.c
+++ b/lincan/src/can_devrtl.c
@@ -16,6 +16,12 @@
 
 #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 )
@@ -160,7 +166,15 @@ int can_chip_setup_irq(struct chip_t *chip)
 	}
 	
 	if(chip->chipspecops->irq_handler){
-		if (rtl_request_irq(chip->chip_irq,can_rtl_isr))
+		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);
@@ -179,7 +193,14 @@ void can_chip_free_irq(struct chip_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);
+		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;
 	}
 }
-- 
2.39.2