kern/amd64: lapic: Add Local APIC timer interface

This commit adds an interface to perform a oneshot operation with the
Local APIC timer as well as providing a stub interrupt service routine
for it.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/sys/inc/arch/amd64/lapic.h b/sys/inc/arch/amd64/lapic.h
index 35ba778..d22a560 100644
--- a/sys/inc/arch/amd64/lapic.h
+++ b/sys/inc/arch/amd64/lapic.h
@@ -31,6 +31,7 @@
 #define _MACHINE_LAPIC_H_ 1
 
 #include <sys/types.h>
+#include <lib/stdbool.h>
 #include <mu/cpu.h>
 
 #define LAPIC_TMR_VEC 0x81
@@ -91,6 +92,12 @@ struct lapic_ipi {
 };
 
 /*
+ * Put the local APIC timer in one shot mode and fire it
+ * off
+ */
+void lapic_oneshot_usec(struct mcb *mcb, size_t usec);
+
+/*
  * Read the current local APIC id
  */
 uint32_t lapic_read_id(struct mcb *mcb);