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Implement PIT interrupts

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This commit is contained in:
Kamil Kowalczyk
2025-08-22 12:37:48 +02:00
parent 9d8849a425
commit 182c6e2956
13 changed files with 354 additions and 145 deletions
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56
kernel/hal/x86_64/apic.c
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@ -11,68 +11,14 @@
#include "util/util.h"
#include "cpu.h"
#include "util/mmio.h"
#include "acpi.h"
#define IOAPIC_IOREGSEL 0x00
#define IOAPIC_IOWIN 0x10
#define IOAPIC_IOAPICID 0x00
#define IOAPIC_IOAPICVER 0x01
#define IOAPIC_IOAPICARB 0x02
#define IOAPIC_IOREDTBL 0x10
#define LAPIC_ID 0x0020
#define LAPIC_VER 0x0030
#define LAPIC_TPR 0x0080
#define LAPIC_APR 0x0090
#define LAPIC_PPR 0x00A0
#define LAPIC_EOI 0x00B0
#define LAPIC_RRD 0x00C0
#define LAPIC_LDR 0x00D0
#define LAPIC_DFR 0x00E0
#define LAPIC_SVR 0x00F0
#define LAPIC_ISR 0x0100
#define LAPIC_TMR 0x0180
#define LAPIC_IRR 0x0200
#define LAPIC_ESR 0x0280
#define LAPIC_ICRLO 0x0300
#define LAPIC_ICRHI 0x0310
#define LAPIC_TIMER 0x0320
#define LAPIC_THERMAL 0x0330
#define LAPIC_PERF 0x0340
#define LAPIC_LINT0 0x0350
#define LAPIC_LINT1 0x0360
#define LAPIC_ERROR 0x0370
#define LAPIC_TICR 0x0380
#define LAPIC_TCCR 0x0390
#define LAPIC_TDCR 0x03E0
#define ICR_FIXED 0x00000000
#define ICR_LOWEST 0x00000100
#define ICR_SMI 0x00000200
#define ICR_NMI 0x00000400
#define ICR_INIT 0x00000500
#define ICR_STARTUP 0x00000600
#define ICR_PHYS 0x00000000
#define ICR_LOGC 0x00000800
#define ICR_IDLE 0x00000000
#define ICR_SEND_PENDING 0x00001000
#define ICR_DEASSERT 0x00000000
#define ICR_ASSERT 0x00004000
#define ICR_EDGE 0x00000000
#define ICR_LEVEL 0x00008000
#define ICR_NO_SHORTHAND 0x00000000
#define ICR_SELF 0x00040000
#define ICR_ALL_INC_SELF 0x00080000
#define ICR_ALL_EXCL_SELF 0x000C0000
#define ICR_DEST_SHIFT 24
typedef struct LApic {
struct LApic *next;
uint8_t id;
} LApic;
struct acpi_madt *MADT = NULL;
uint8_t *IOAPIC;
uint8_t *LAPIC;
LApic *LAPICS = NULL;