Changeset de57e060 in mainline for kernel/arch/ia64/src/drivers/it.c

Timestamp:

2006-10-18T20:51:15Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

80ca47e

Parents:

cd13c2a

Message:

Convert ia64 to the new IRQ and notification scheme.

File:

• kernel/arch/ia64/src/drivers/it.c (modified) (5 diffs)

kernel/arch/ia64/src/drivers/it.c

@@ -42 +42 @@
 #include <arch/barrier.h>
 #include <time/clock.h>
+#include <ddi/irq.h>
+#include <ddi/device.h>
 #include <arch.h>
 
+#define IT_SERVICE_CLOCKS 64
 
-#define IT_SERVICE_CLOCKS 64
+static irq_t it_irq;
+
+static irq_ownership_t it_claim(void);
+static void it_interrupt(irq_t *irq, void *arg, ...);
 
 /** Initialize Interval Timer. */
@@ -51 +57 @@
 {
         cr_itv_t itv;
+
+        irq_initialize(&it_irq);
+        it_irq.inr = INTERRUPT_TIMER;
+        it_irq.devno = device_assign_devno();
+        it_irq.claim = it_claim;
+        it_irq.handler = it_interrupt;
+        irq_register(&it_irq);
 
         /* initialize Interval Timer external interrupt vector */
@@ -68 +81 @@
 }
 
+/** Always claim ownership for this IRQ.
+ *
+ * Other devices are responsible to avoid using INR 0.
+ *
+ * @return Always IRQ_ACCEPT.
+ */
+irq_ownership_t it_claim(void)
+{
+        return IRQ_ACCEPT;
+}
 
 /** Process Interval Timer interrupt. */
-void it_interrupt(void)
+void it_interrupt(irq_t *irq, void *arg, ...)
 {
         int64_t c;
@@ -84 +107 @@
 
                 m += IT_DELTA;
-                if (m-c<0)
+                if (m - c < 0)
                         CPU->missed_clock_ticks++;
                 else
@@ -94 +117 @@
         
         clock();
+        
+        /*
+         * This one is a good candidate for moving to a separate
+         * kernel thread private to ski.c
+         */
         poll_keyboard();
 }