From 9113fa42e6794e39d7233e17e8106f677ad04d94 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 29 Jun 2024 18:38:13 -0400
Subject: kernel/amd64: lapic: Add support for IPIs

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/arch/amd64/lapic.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'sys/include')

diff --git a/sys/include/arch/amd64/lapic.h b/sys/include/arch/amd64/lapic.h
index d06bcc9..3b06206 100644
--- a/sys/include/arch/amd64/lapic.h
+++ b/sys/include/arch/amd64/lapic.h
@@ -30,10 +30,20 @@
 #ifndef _MACHINE_LAPIC_H_
 #define _MACHINE_LAPIC_H_
 
+#include <sys/param.h>
 #include <sys/types.h>
 
+#define IPI_SHORTHAND_NONE      0x00
+#define IPI_SHORTHAND_SELF      0x01
+#define IPI_SHORTHAND_ALL       0x02
+#define IPI_SHORTHAND_OTHERS    0x03
+
+#define IPI_DEST_PHYSICAL   0
+#define IPI_DEST_LOGICAL    BIT(11)
+
 void lapic_init(void);
 void lapic_eoi(void);
+void lapic_send_ipi(uint8_t id, uint8_t shorthand, uint8_t vector);
 
 extern uintptr_t g_lapic_base;
 
-- 
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