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(+)
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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