acpi: add APIC irq ack and legacy vector remapping

2023-03-24 14:21:02 +00:00
parent cb622f5ad4
commit 864362ba82
11 changed files with 286 additions and 49 deletions
--- a/arch/x86_64/acpi/local_apic.cpp
+++ b/arch/x86_64/acpi/local_apic.cpp
@@ -0,0 +1,25 @@
+#include <arch/acpi/local_apic.hpp>
+#include <socks/vm.h>
+
+#define LAPIC_REG_EOI 0xB0
+
+namespace arch::acpi {
+	local_apic::local_apic(uint32_t *base) : base_(base)
+	{
+	}
+
+	uint32_t local_apic::read(uint32_t reg)
+	{
+		return *(volatile uint32_t *)((char *)base_ + reg);
+	}
+
+	void local_apic::write(uint32_t reg, uint32_t val)
+	{
+		*(volatile uint32_t *)((char *)base_ + reg) = val;
+	}
+
+	void local_apic::ack()
+	{
+		*(volatile uint32_t *)((char *)base_ + LAPIC_REG_EOI) = 0;
+	}
+}