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I/O APIC

include/acpi/ioapic.h View source View on GitHub

Structs

Section titled “Structs”

ioapic_info

Section titled “ioapic_info”
struct ioapic_info {
    uint8_t   id;
    uint32_t  gsi_base;
    uint32_t  *mmio_base;
};

Unions

Section titled “Unions”

ioapic_redirection_entry

Section titled “ioapic_redirection_entry”
union ioapic_redirection_entry {
    uint64_t  raw;
    struct {
        uint8_t   vector;
        uint8_t   delivery_mode : 3;
        uint8_t   dest_mode : 1;
        uint8_t   delivery_status : 1;
        uint8_t   polarity : 1;
        uint8_t   remote_irr : 1;
        uint8_t   trigger_mode : 1;
        uint8_t   mask : 1;
        uint64_t  reserved : 39;
        uint8_t   dest_apic_id;
    };
};

Functions

Section titled “Functions”

ioapic_init

Section titled “ioapic_init”
void ioapic_init(void);

ioapic_write

Section titled “ioapic_write”
void ioapic_write(uint8_t reg, uint32_t val);

ioapic_read

Section titled “ioapic_read”
uint32_t ioapic_read(uint8_t reg);

ioapic_set_redirection_entry

Section titled “ioapic_set_redirection_entry”
void ioapic_set_redirection_entry(int irq, uint64_t entry);

ioapic_get_redirection_entry

Section titled “ioapic_get_redirection_entry”
uint64_t ioapic_get_redirection_entry(int irq);

ioapic_route_irq

Section titled “ioapic_route_irq”
void ioapic_route_irq(irq_t irq, uint8_t vector, uint8_t dest_apic_id, bool masked);

ioapic_mask_irq

Section titled “ioapic_mask_irq”
void ioapic_mask_irq(irq_t irq);

ioapic_unmask_irq

Section titled “ioapic_unmask_irq”
void ioapic_unmask_irq(irq_t irq);

ioapic_get_chip

Section titled “ioapic_get_chip”
struct irq_chip * ioapic_get_chip(void);

ioapic_isa_to_gsi

Section titled “ioapic_isa_to_gsi”
uint32_t ioapic_isa_to_gsi(uint8_t isa_irq);

ioapic_route_isa_irq

Section titled “ioapic_route_isa_irq”
void ioapic_route_isa_irq(uint8_t isa_irq, uint8_t vector, uint8_t dest_apic_id, bool masked);

ioapic_route_isa_nmi

Section titled “ioapic_route_isa_nmi”
void ioapic_route_isa_nmi(uint8_t isa_irq, uint8_t dest_apic_id);

Macros

Section titled “Macros”

IOAPIC_REGSEL_INDEX

Section titled “IOAPIC_REGSEL_INDEX”
#define IOAPIC_REGSEL_INDEX 0 /* IOREGSEL index */

IOAPIC_IOWIN_INDEX

Section titled “IOAPIC_IOWIN_INDEX”
#define IOAPIC_IOWIN_INDEX 4  /* IOWIN index */

IOAPIC_MMIO_SIZE

Section titled “IOAPIC_MMIO_SIZE”
#define IOAPIC_MMIO_SIZE 0x20 /* 32 bytes */

IOAPIC_REG_ID

Section titled “IOAPIC_REG_ID”
#define IOAPIC_REG_ID 0x00

IOAPIC_REG_VER

Section titled “IOAPIC_REG_VER”
#define IOAPIC_REG_VER 0x01

IOAPIC_REG_ARB

Section titled “IOAPIC_REG_ARB”
#define IOAPIC_REG_ARB 0x02

IOAPIC_REG_REDTBL_BASE

Section titled “IOAPIC_REG_REDTBL_BASE”
#define IOAPIC_REG_REDTBL_BASE 0x10

IOAPIC_REDTBL_REG_LOW

Section titled “IOAPIC_REDTBL_REG_LOW”
#define IOAPIC_REDTBL_REG_LOW(pin) \
    ((uint8_t) (IOAPIC_REG_REDTBL_BASE + (pin) * 2))

IOAPIC_REDTBL_REG_HIGH

Section titled “IOAPIC_REDTBL_REG_HIGH”
#define IOAPIC_REDTBL_REG_HIGH(pin) \
    ((uint8_t) (IOAPIC_REG_REDTBL_BASE + (pin) * 2 + 1))

IOAPIC_DELIVERY_FIXED

Section titled “IOAPIC_DELIVERY_FIXED”
#define IOAPIC_DELIVERY_FIXED 0

IOAPIC_DELIVERY_LOWEST

Section titled “IOAPIC_DELIVERY_LOWEST”
#define IOAPIC_DELIVERY_LOWEST 1

IOAPIC_DELIVERY_SMI

Section titled “IOAPIC_DELIVERY_SMI”
#define IOAPIC_DELIVERY_SMI 2

IOAPIC_DELIVERY_NMI

Section titled “IOAPIC_DELIVERY_NMI”
#define IOAPIC_DELIVERY_NMI 4

IOAPIC_DELIVERY_INIT

Section titled “IOAPIC_DELIVERY_INIT”
#define IOAPIC_DELIVERY_INIT 5

IOAPIC_DELIVERY_EXTINT

Section titled “IOAPIC_DELIVERY_EXTINT”
#define IOAPIC_DELIVERY_EXTINT 7

IOAPIC_DEST_PHYSICAL

Section titled “IOAPIC_DEST_PHYSICAL”
#define IOAPIC_DEST_PHYSICAL 0

IOAPIC_DEST_LOGICAL

Section titled “IOAPIC_DEST_LOGICAL”
#define IOAPIC_DEST_LOGICAL 1

IOAPIC_POLARITY_ACTIVE_HIGH

Section titled “IOAPIC_POLARITY_ACTIVE_HIGH”
#define IOAPIC_POLARITY_ACTIVE_HIGH 0

IOAPIC_POLARITY_ACTIVE_LOW

Section titled “IOAPIC_POLARITY_ACTIVE_LOW”
#define IOAPIC_POLARITY_ACTIVE_LOW 1

IOAPIC_TRIGGER_EDGE

Section titled “IOAPIC_TRIGGER_EDGE”
#define IOAPIC_TRIGGER_EDGE 0

IOAPIC_TRIGGER_LEVEL

Section titled “IOAPIC_TRIGGER_LEVEL”
#define IOAPIC_TRIGGER_LEVEL 1

IOAPIC_MASK_UNMASKED

Section titled “IOAPIC_MASK_UNMASKED”
#define IOAPIC_MASK_UNMASKED 0

IOAPIC_MASK_MASKED

Section titled “IOAPIC_MASK_MASKED”
#define IOAPIC_MASK_MASKED 1

IOAPIC_REDTBL_MASK

Section titled “IOAPIC_REDTBL_MASK”
#define IOAPIC_REDTBL_MASK (1u << 16)

IOAPIC_ISO_POLARITY_MASK

Section titled “IOAPIC_ISO_POLARITY_MASK”
#define IOAPIC_ISO_POLARITY_MASK 0x03

IOAPIC_ISO_POLARITY_ACTIVE_LOW

Section titled “IOAPIC_ISO_POLARITY_ACTIVE_LOW”
#define IOAPIC_ISO_POLARITY_ACTIVE_LOW 0x03

IOAPIC_ISO_TRIGGER_MASK

Section titled “IOAPIC_ISO_TRIGGER_MASK”
#define IOAPIC_ISO_TRIGGER_MASK 0x0C

IOAPIC_ISO_TRIGGER_LEVEL

Section titled “IOAPIC_ISO_TRIGGER_LEVEL”
#define IOAPIC_ISO_TRIGGER_LEVEL 0x0C