From d5381223cea600ff007069bc1313de142cd06972 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 8 Jun 2024 18:13:42 -0400
Subject: kernel/amd64: lapic: Add End-Of-Interrupt helper

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/arch/amd64/amd64/lapic.c   | 10 ++++++++++
 sys/include/arch/amd64/lapic.h |  1 +
 2 files changed, 11 insertions(+)

(limited to 'sys')

diff --git a/sys/arch/amd64/amd64/lapic.c b/sys/arch/amd64/amd64/lapic.c
index 07a9a49..b7cefd4 100644
--- a/sys/arch/amd64/amd64/lapic.c
+++ b/sys/arch/amd64/amd64/lapic.c
@@ -284,6 +284,16 @@ lapic_timer_init(void)
     return freq;
 }
 
+/*
+ * Indicates that the current interrupt is finished
+ * being serviced.
+ */
+void
+lapic_eoi(void)
+{
+    lapic_writel(LAPIC_EOI, 0);
+}
+
 void
 lapic_init(void)
 {
diff --git a/sys/include/arch/amd64/lapic.h b/sys/include/arch/amd64/lapic.h
index 8a6bb14..d06bcc9 100644
--- a/sys/include/arch/amd64/lapic.h
+++ b/sys/include/arch/amd64/lapic.h
@@ -33,6 +33,7 @@
 #include <sys/types.h>
 
 void lapic_init(void);
+void lapic_eoi(void);
 
 extern uintptr_t g_lapic_base;
 
-- 
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