From 0812a0635022227caaf6d4576559878d36a3ddb9 Mon Sep 17 00:00:00 2001
From: 0x35c <unai64@orange.fr>
Date: Wed, 9 Oct 2024 16:22:26 +0200
Subject: [PATCH] core: remove apic.c and unused function in pic.c

---
 src/interrupt/apic.c | 69 --------------------------------------------
 src/interrupt/pic.c  |  6 ----
 2 files changed, 75 deletions(-)
 delete mode 100644 src/interrupt/apic.c

diff --git a/src/interrupt/apic.c b/src/interrupt/apic.c
deleted file mode 100644
index 930c417..0000000
--- a/src/interrupt/apic.c
+++ /dev/null
@@ -1,69 +0,0 @@
-#include "apic.h"
-#include "cpuid.h"
-#include <cpuid.h>
-#include <stdbool.h>
-#include <stdint.h>
-
-#define IA32_APIC_BASE_MSR        0x1B
-#define IA32_APIC_BASE_MSR_BSP    0x100 // Processor is a BSP
-#define IA32_APIC_BASE_MSR_ENABLE 0x800
-
-/** returns a 'true' value if the CPU supports APIC
- *  and if the local APIC hasn't been disabled in MSRs
- *  note that this requires CPUID to be supported.
- */
-bool check_apic()
-{
-	static unsigned int eax, edx, unused;
-	__get_cpuid(1, &eax, &unused, &unused, &edx);
-	return edx & CPUID_FEAT_EDX_APIC;
-}
-
-/* Set the physical address for local APIC registers */
-static void cpu_set_apic_base(uintptr_t apic)
-{
-	uint32_t edx = 0;
-	uint32_t eax = (apic & 0xfffff0000) | IA32_APIC_BASE_MSR_ENABLE;
-
-#ifdef __PHYSICAL_MEMORY_EXTENSION__
-	edx = (apic >> 32) & 0x0f;
-#endif
-
-	cpu_set_msr(IA32_APIC_BASE_MSR, eax, edx);
-}
-
-/**
- * Get the physical address of the APIC registers page
- * make sure you map it to virtual memory ;)
- */
-static uintptr_t cpu_get_apic_base(void)
-{
-	uint32_t eax, edx;
-	cpu_get_msr(IA32_APIC_BASE_MSR, &eax, &edx);
-
-#ifdef __PHYSICAL_MEMORY_EXTENSION__
-	return (eax & 0xfffff000) | ((edx & 0x0f) << 32);
-#else
-	return (eax & 0xfffff000);
-#endif
-}
-
-static uint32_t read_apic_register(uint32_t reg)
-{
-	return *((volatile uint32_t *)(cpu_get_apic_base()) + reg);
-}
-
-static void write_apic_register(uint32_t reg, uint32_t value)
-{
-	*((volatile uint32_t *)(cpu_get_apic_base() + reg)) = value;
-}
-
-void enable_apic(void)
-{
-	/* Hardware enable the Local APIC if it wasn't enabled */
-	cpu_set_apic_base(cpu_get_apic_base());
-
-	/* Set the Spurious Interrupt Vector Register bit 8 to start receiving
-	 * interrupts */
-	write_apic_register(0xF0, read_apic_register(0xF0) | 0x100);
-}
diff --git a/src/interrupt/pic.c b/src/interrupt/pic.c
index b5bce4f..3bc5da1 100644
--- a/src/interrupt/pic.c
+++ b/src/interrupt/pic.c
@@ -56,12 +56,6 @@ void pic_remap(int offset_master, int offset_slave)
 	outb(PIC2_DATA, a2);
 }
 
-void pic_disable(void)
-{
-	outb(PIC1_DATA, 0xff);
-	outb(PIC2_DATA, 0xff);
-}
-
 void pic_send_eoi(uint8_t irq)
 {
 	if (irq >= 8)