Changeset 953bc1ef in mainline for kernel/generic/src/ddi/ddi.c

Timestamp:

2010-04-29T08:34:29Z (14 years ago)

Author:

Lenka Trochtova <trochtova.lenka@…>

Branches:

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

Children:

cfe7716

Parents:

5af21c5

Message:

introduced an 'interrupt_enable' syscall as a temporary solution for enabling/disabling interrupts

File:

• kernel/generic/src/ddi/ddi.c (modified) (1 diff)

kernel/generic/src/ddi/ddi.c

@@ -287 +287 @@
 }
 
+/** Disable or enable specified interrupts.
+ * 
+ * @param irq the interrupt to be enabled/disabled.
+ * @param enable if true enable the interrupt, disable otherwise.
+ * 
+ * @retutn Zero on success, error code otherwise.
+ */
+unative_t sys_interrupt_enable(int irq, int enable)
+{       
+        cap_t task_cap = cap_get(TASK);
+        if (!(task_cap & CAP_PREEMPT_CONTROL) || !(task_cap & CAP_IRQ_REG))
+                return EPERM;
+                
+        if (irq < 0 || irq > 16) {
+                return EINVAL;
+        }
+        
+        uint16_t irq_mask = (uint16_t)(1 << irq);
+        if (enable) {
+                trap_virtual_enable_irqs(irq_mask);
+        } else {
+                trap_virtual_disable_irqs(irq_mask);
+        }
+        
+        return 0;       
+}
+
 /** @}
  */