#include <kernel/acpi/tables.h>
#include <kernel/cpu/interrupt.h>
#include <kernel/defs.h>
#include <stdint.h>

Data Structures
struct	ioapic_version_t
	IO APIC Version Structure. More...

struct	ioapic_redirect_entry_t
	IO APIC Redirection Entry Structure. More...

struct	ioapic_redirect_entry_t::PACKED

Macros
#define	LAPIC_REG_ICR1_ID_OFFSET 24
	The offset at which the lapic id is stored in the LAPIC_REG_ID register.

#define	IOAPIC_REG_REDIRECTION(pin, high) (0x10 + (pin) * 2 + (high))
	Macro to get the redirection entry register for a specific pin.

#define	APIC_TIMER_TICKS_FIXED_POINT_OFFSET 32
	APIC Timer Ticks Fixed Point Offset.

Typedefs
typedef struct cpu	cpu_t

typedef uint8_t	lapic_id_t
	Local APIC ID type.

typedef uint32_t	ioapic_gsi_t
	IO APIC Global System Interrupt type.

Enumerations
enum	apic_timer_mode_t { APIC_TIMER_MASKED = 0x10000 , APIC_TIMER_PERIODIC = 0x20000 , APIC_TIMER_ONE_SHOT = 0x00000 }
	APIC Timer Modes. More...

enum	apic_timer_divider_t { APIC_TIMER_DIV_16 = 0x3 , APIC_TIMER_DIV_32 = 0x4 , APIC_TIMER_DIV_64 = 0x5 , APIC_TIMER_DIV_128 = 0x6 , APIC_TIMER_DIV_DEFAULT = APIC_TIMER_DIV_16 }
	APIC Timer Divider Values. More...

enum	lapic_msr_flags_t { LAPIC_MSR_ENABLE = 0x800 , LAPIC_MSR_BSP = 0x100 }
	Local APIC MSR Flags. More...

enum	lapic_register_t { LAPIC_REG_ID = 0x020 , LAPIC_REG_VERSION = 0x030 , LAPIC_REG_TASK_PRIORITY = 0x080 , LAPIC_REG_ARBITRATION_PRIORITY = 0x090 , LAPIC_REG_PROCESSOR_PRIORITY = 0x0A0 , LAPIC_REG_EOI = 0x0B0 , LAPIC_REG_REMOTE_READ = 0x0C0 , LAPIC_REG_LOGICAL_DEST = 0x0D0 , LAPIC_REG_DEST_FORMAT = 0x0E0 , LAPIC_REG_SPURIOUS = 0x0F0 , LAPIC_REG_ISR_BASE = 0x100 , LAPIC_REG_TMR_BASE = 0x180 , LAPIC_REG_IRR_BASE = 0x200 , LAPIC_REG_ERROR_STATUS = 0x280 , LAPIC_REG_LVT_CMCI = 0x2F0 , LAPIC_REG_ICR0 = 0x300 , LAPIC_REG_ICR1 = 0x310 , LAPIC_REG_LVT_TIMER = 0x320 , LAPIC_REG_LVT_THERMAL = 0x330 , LAPIC_REG_LVT_PERFCTR = 0x340 , LAPIC_REG_LVT_LINT0 = 0x350 , LAPIC_REG_LVT_LINT1 = 0x360 , LAPIC_REG_LVT_ERROR = 0x370 , LAPIC_REG_TIMER_INITIAL_COUNT = 0x380 , LAPIC_REG_TIMER_CURRENT_COUNT = 0x390 , LAPIC_REG_TIMER_DIVIDER = 0x3E0 }
	Local APIC Registers. More...

enum	lapic_flags_t { LAPIC_SPURIOUS_ENABLE = (1 << 8) , LAPIC_LVT_MASKED = (1 << 16) }
	Local APIC Flags. More...

enum	lapic_icr_delivery_mode_t { LAPIC_ICR_FIXED = (0 << 8) , LAPIC_ICR_LOWEST_PRIORITY = (1 << 8) , LAPIC_ICR_SMI = (2 << 8) , LAPIC_ICR_NMI = (4 << 8) , LAPIC_ICR_INIT = (5 << 8) , LAPIC_ICR_STARTUP = (6 << 8) }
	Local APIC ICR Delivery Modes. More...

enum	lapic_icr_flags_t { LAPIC_ICR_CLEAR_INIT_LEVEL = (1 << 14) }
	Local APIC ICR Flags. More...

enum	ioapic_mmio_register_t { IOAPIC_MMIO_REG_SELECT = 0x00 , IOAPIC_MMIO_REG_DATA = 0x10 }
	IO APIC Memory Mapped Registers. More...

enum	ioapic_register_t { IOAPIC_REG_VERSION = 0x01 }
	IO APIC Registers. More...

enum	ioapic_delivery_mode_t { IOAPIC_DELIVERY_NORMAL = 0 , IOAPIC_DELIVERY_LOW_PRIO = 1 , IOAPIC_DELIVERY_SMI = 2 , IOAPIC_DELIVERY_NMI = 4 , IOAPIC_DELIVERY_INIT = 5 , IOAPIC_DELIVERY_EXTERNAL = 7 }
	IO APIC Delivery Modes. More...

enum	ioapic_destination_mode_t { IOAPIC_DESTINATION_PHYSICAL = 0 , IOAPIC_DESTINATION_LOGICAL = 1 }
	IO APIC Destination Modes. More...

enum	ioapic_trigger_mode_t { IOAPIC_TRIGGER_EDGE = 0 , IOAPIC_TRIGGER_LEVEL = 1 }
	IO APIC Trigger Modes. More...

enum	ioapic_polarity_t { IOAPIC_POLARITY_HIGH = 0 , IOAPIC_POLARITY_LOW = 1 }
	IO APIC Polarity Modes. More...

Functions
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.

Typedef Documentation

◆ cpu_t

typedef struct cpu cpu_t

Definition at line 9 of file apic.h.

Data Structures

Macros

Typedefs

Enumerations

Functions

Typedef Documentation

◆ cpu_t