X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=kitten%2Finclude%2Flwk%2Finterrupt.h;fp=kitten%2Finclude%2Flwk%2Finterrupt.h;h=0a7ad5f771197d17dbfa1b16e83c7c39b51406e7;hb=66a1a4c7a9edcd7d8bc207aca093d694a6e6b5b2;hp=0000000000000000000000000000000000000000;hpb=f7cf9c19ecb0a589dd45ae0d2c91814bd3c2acc2;p=palacios-OLD.git

diff --git a/kitten/include/lwk/interrupt.h b/kitten/include/lwk/interrupt.h
new file mode 100644
index 0000000..0a7ad5f
--- /dev/null
+++ b/kitten/include/lwk/interrupt.h
@@ -0,0 +1,35 @@
+#ifndef _LWK_INTERRUPT_H
+#define _LWK_INTERRUPT_H
+
+/**
+ * IRQ handler return type.
+ *
+ *    IRQ_NONE means we didn't handle the interrupt.
+ *    IRQ_HANDLED means we did handle the interrupt.
+ *    IRQ_RETVAL(x) returns IRQ_HANDLED if x is non-zero, IRQ_NONE otherwise.
+ */
+typedef int irqreturn_t;
+#define IRQ_NONE	(0)
+#define IRQ_HANDLED	(1)
+#define IRQ_RETVAL	((x) != 0)
+
+/**
+ * IRQ handler prototype.
+ */
+typedef irqreturn_t (*irq_handler_t)(unsigned int irq, void *dev_id);
+
+/**
+ * Registers an interrupt handler.
+ */
+extern int request_irq(unsigned int	irq,
+                       irq_handler_t	handler,
+                       unsigned long	irqflags,
+                       const char 	*devname,
+                       void 		*dev_id);
+
+/**
+ * Unregisters an interrupt handler.
+ */
+extern void free_irq(unsigned int irq, void *dev_id);
+
+#endif