Changeset 1120276 in mainline

Timestamp:

2005-12-27T12:03:29Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

7614565

Parents:

39494010

Message:

sparc64 work.
Tick interrupt support.

Location:

arch/sparc64

Files:

• include/asm.h (modified) (1 diff)
• include/drivers/tick.h (modified) (1 diff)
• src/drivers/tick.c (modified) (2 diffs)

arch/sparc64/include/asm.h

@@ -123 +123 @@
 }
 
+/** Write CLEAR_SOFTINT Register.
+ *
+ * Bits set in CLEAR_SOFTINT register will be cleared in SOFTINT register.
+ *
+ * @param New value of CLEAR_SOFTINT register.
+ */
+static inline void clear_softint_write(__u64 v)
+{
+        __asm__ volatile ("wr %0, %1, %%clear_softint\n" : : "r" (v), "i" (0));
+}
+
 /** Enable interrupts.
  *

arch/sparc64/include/drivers/tick.h

@@ -30 +30 @@
 #define __sparc64_TICK_H__
 
-#define TICK_DELTA        100000
+#define TICK_DELTA        500000
 
 extern void tick_init(void);

arch/sparc64/src/drivers/tick.c

@@ -32 +32 @@
 #include <arch/register.h>
 #include <debug.h>
-#include <print.h>
+#include <time/clock.h>
 
+/** Initialize tick interrupt. */
 void tick_init(void)
 {
@@ -45 +46 @@
 }
 
+/** Process tick interrupt.
+ *
+ * @param n Interrupt Level, 14,  (can be ignored)
+ * @param stack Stack pointer of the interrupted context.
+ */
 void tick_interrupt(int n, void *stack)
 {
-        panic("Unserviced %s.\n", __FUNCTION__);
+        softint_reg_t softint, clear;
+        
+        softint.value = softint_read();
+        
+        /*
+         * Make sure we are servicing interrupt_level_14
+         */
+        ASSERT(n == 14);
+        
+        /*
+         * Make sure we are servicing TICK_INT.
+         */
+        ASSERT(softint.tick_int);
+
+        /*
+         * Clear tick interrupt.
+         */
+        clear.value = 0;
+        clear.tick_int = 1;
+        clear_softint_write(clear.value);
+        
+        /*
+         * Restart counter.
+         */
+        tick_write(0);
+        
+        clock();
 }