apic.c File Reference

#include <kernel/drivers/apic.h>
#include <kernel/acpi/tables.h>
#include <kernel/cpu/cpu.h>
#include <kernel/cpu/smp.h>
#include <kernel/drivers/hpet.h>
#include <kernel/drivers/pic.h>
#include <kernel/log/log.h>
#include <kernel/log/panic.h>
#include <kernel/mem/vmm.h>
#include <kernel/sched/timer.h>
#include <kernel/utils/utils.h>
#include <assert.h>
#include <kernel/defs.h>

Go to the source code of this file.

Functions
static uint64_t	lapic_init (void)
static uint64_t	ioapic_all_init (void)
static uint64_t	apic_init (sdt_header_t *table)
	ACPI_SDT_HANDLER_REGISTER (MADT_SIGNATURE, apic_init)
void	apic_timer_one_shot (interrupt_t vector, uint32_t ticks)
	Configure the apic timer in one-shot mode.
uint64_t	apic_timer_ticks_per_ns (void)
	Apic timer ticks per nanosecond.
void	lapic_cpu_init (void)
	Initialize the local apic for the current cpu.
lapic_id_t	lapic_self_id (void)
	Get the lapic id of the current cpu.
void	lapic_write (lapic_register_t reg, uint32_t value)
	Write to a local apic register.
uint32_t	lapic_read (lapic_register_t reg)
	Read from a local apic register.
void	lapic_send_init (lapic_id_t id)
	Send an INIT IPI to a local apic.
void	lapic_send_sipi (lapic_id_t id, void *entryPoint)
	Send a Startup IPI to a local apic.
void	lapic_send_ipi (lapic_id_t id, interrupt_t vector)
	Send an Inter-Processor Interrupt (IPI) to a local apic.
void	lapic_eoi (void)
	Send an End Of Interrupt (EOI) signal to the local apic.
uint32_t	ioapic_read (ioapic_t *ioapic, ioapic_register_t reg)
	Read from an IOAPIC register.
void	ioapic_write (ioapic_t *ioapic, ioapic_register_t reg, uint32_t value)
	Write to an IOAPIC register.
ioapic_version_t	ioapic_get_version (ioapic_t *ioapic)
	Get the IOAPIC version.
ioapic_t *	ioapic_from_gsi (ioapic_gsi_t gsi)
	Get the IOAPIC id responsible for a given GSI.
void	ioapic_set_redirect (interrupt_t vector, ioapic_gsi_t gsi, ioapic_delivery_mode_t deliveryMode, ioapic_polarity_t polarity, ioapic_trigger_mode_t triggerMode, cpu_t *cpu, bool enable)
	Set an IOAPIC redirection entry.

Variables
static bool	initialized = false
static madt_t *	madt
static uintptr_t	lapicBase

Function Documentation

ACPI_SDT_HANDLER_REGISTER()

ACPI_SDT_HANDLER_REGISTER	(	MADT_SIGNATURE	,
		apic_init
	)

apic_init()

static uint64_t apic_init ( sdt_header_t *  table )

static

Definition at line 78 of file apic.c.

References ERR, initialized, ioapic_all_init(), lapic_init(), LOG_ERR, and madt.

ioapic_all_init()

static uint64_t ioapic_all_init ( void  )

static

Definition at line 42 of file apic.c.

References ERR, ioapic_t::globalSystemInterruptBase, ioapic_t::header, ioapic_redirect_entry_t::PACKED::high, INTERRUPT_CONTROLLER_IO_APIC, ioapic_get_version(), IOAPIC_REG_REDIRECTION, ioapic_write(), ioapic_t::ioApicAddress, LOG_ERR, LOG_INFO, ioapic_redirect_entry_t::PACKED::low, madt, MADT_FOR_EACH, ioapic_version_t::maxRedirs, NULL, PAGE_SIZE, pic_disable(), PML_GLOBAL, PML_LOWER_TO_HIGHER, PML_PRESENT, PML_WRITE, ioapic_redirect_entry_t::raw, interrupt_controller_header_t::type, and vmm_map().

Referenced by apic_init().

lapic_init()

static uint64_t lapic_init ( void  )

static

Definition at line 21 of file apic.c.

References ERR, lapicBase, madt_t::localInterruptControllerAddress, LOG_ERR, LOG_INFO, madt, NULL, PAGE_SIZE, PML_GLOBAL, PML_LOWER_TO_HIGHER, PML_PRESENT, PML_WRITE, and vmm_map().

Referenced by apic_init().

Variable Documentation

initialized

bool initialized = false

static

Definition at line 17 of file apic.c.

Referenced by apic_init(), apic_timer_one_shot(), apic_timer_ticks_per_ns(), ioapic_from_gsi(), ioapic_get_version(), ioapic_read(), ioapic_set_redirect(), ioapic_write(), lapic_cpu_init(), lapic_eoi(), lapic_read(), lapic_self_id(), lapic_send_init(), lapic_send_ipi(), lapic_send_sipi(), and lapic_write().

lapicBase

uintptr_t lapicBase

static

Definition at line 19 of file apic.c.

Referenced by lapic_init(), lapic_read(), and lapic_write().

madt

madt_t* madt

static

Definition at line 18 of file apic.c.

Referenced by apic_init(), ioapic_all_init(), ioapic_from_gsi(), lapic_init(), and smp_others_init().