kernel/amd64: Add I/O APIC driver

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/sys/include/arch/amd64/ioapicvar.h b/sys/include/arch/amd64/ioapicvar.h
new file mode 100644
index 0000000..d5a75df
--- /dev/null
+++ b/sys/include/arch/amd64/ioapicvar.h
@@ -0,0 +1,28 @@
+#ifndef _MACHINE_IOAPICVAR_H_
+#define _MACHINE_IOAPICVAR_H_
+
+#include <sys/types.h>
+
+/* Register offsets */
+#define IOREGSEL    0x00
+#define IOWIN       0x10
+#define IOAPICVER   0x01
+#define IOREDTBL    0x10
+
+union ioapic_redentry {
+    struct {
+        uint8_t vector;
+        uint8_t delmod          : 3;
+        uint8_t destmod         : 1;
+        uint8_t delivs          : 1;
+        uint8_t intpol          : 1;
+        uint8_t remote_irr      : 1;
+        uint8_t trigger_mode    : 1;
+        uint8_t interrupt_mask  : 1;
+        uint64_t reserved       : 39;
+        uint8_t dest_field;
+    };
+    uint64_t value;
+};
+
+#endif  /* !_MACHINE_IOAPICVAR_H_ */