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authorIan Moffett <ian@osmora.org>2024-02-26 00:16:55 -0500
committerIan Moffett <ian@osmora.org>2024-02-26 00:16:55 -0500
commitd2bb1bd0f7ee62c5e9051db95df2916271c91105 (patch)
treea08a1b7a91613dc1f07943464044b18e6d0d9b18
parent3591368b6cf0b7c1e48edfe811e519ad9b3d01b5 (diff)
kernel/amd64: lapic: Add support for sending EOIs
Signed-off-by: Ian Moffett <ian@osmora.org>
-rw-r--r--sys/arch/amd64/amd64/lapic.c6
-rw-r--r--sys/include/arch/amd64/lapic.h1
2 files changed, 7 insertions, 0 deletions
diff --git a/sys/arch/amd64/amd64/lapic.c b/sys/arch/amd64/amd64/lapic.c
index c342844..a72e14e 100644
--- a/sys/arch/amd64/amd64/lapic.c
+++ b/sys/arch/amd64/amd64/lapic.c
@@ -309,6 +309,12 @@ lapic_send_ipi(uint8_t id, uint8_t shorthand, uint8_t vector)
}
}
+void
+lapic_send_eoi(void)
+{
+ lapic_writel(LAPIC_EOI, 0);
+}
+
/*
* Calibrates the Local APIC timer
*
diff --git a/sys/include/arch/amd64/lapic.h b/sys/include/arch/amd64/lapic.h
index db27ad6..5ab810a 100644
--- a/sys/include/arch/amd64/lapic.h
+++ b/sys/include/arch/amd64/lapic.h
@@ -52,6 +52,7 @@ void lapic_timer_init(size_t *freq_out);
void lapic_timer_oneshot(bool mask, uint32_t count);
void lapic_timer_oneshot_us(size_t us);
void lapic_send_ipi(uint8_t id, uint8_t shorthand, uint8_t vector);
+void lapic_send_eoi(void);
void lapic_init(void);
#endif /* !_AMD64_LAPIC_H_ */