IRQs

include/irq/irq.h View source View on GitHub

Structs

irq_action

struct irq_action {
    irq_handler_t     handler;
    void              *data;
    struct list_head  list;
};

irq_chip

struct irq_chip {
    const char  *name;
    void        (*mask)(struct irq_desc *);
    void        (*unmask)(struct irq_desc *);
    void        (*eoi)(struct irq_desc *);
    void        (*set_affinity)(struct irq_desc *, struct cpu_mask *);
    int         (*set_rate_limit)(struct irq_desc *, time_t interval);
};

irq_desc

struct irq_desc {
    uint8_t           vector;
    enum irq_flags    flags;
    const char        *name;
    struct irq_chip   *chip;
    void              *chip_data;
    struct list_head  actions;
    struct cpu_mask   affinity;
    struct cpu_mask   masked_cpus;
    bool              present;
    bool              allocated;
    bool              enabled;
};

irq_context

struct irq_context {
    uint64_t  rax;
    uint64_t  rbx;
    uint64_t  rcx;
    uint64_t  rdx;
    uint64_t  rbp;
    uint64_t  rdi;
    uint64_t  rsi;
    uint64_t  r8;
    uint64_t  r9;
    uint64_t  r10;
    uint64_t  r11;
    uint64_t  r12;
    uint64_t  r13;
    uint64_t  r14;
    uint64_t  r15;
    uint64_t  error_code;
    uint64_t  rip;
    uint64_t  cs;
    uint64_t  rflags;
    uint64_t  rsp;
    uint64_t  ss;
};

Enums

irq_result

enum irq_result {
    IRQ_NONE = 0,
    IRQ_HANDLED = 1,
};

irq_flags

enum irq_flags {
    IRQ_FLAG_SHARED = 1,
    IRQ_FLAG_LEVEL_TRIGGERED = 1 << 1,
    IRQ_FLAG_EDGE_TRIGGERED = 1 << 2,
    IRQ_FLAG_NONE = 0,
};

Type Aliases

irq_handler_t

typedef enum irq_result (*irq_handler_t)(void * ctx, uint8_t vector, struct irq_context * ictx);

Functions

irq_register

void irq_register(char *name, uint8_t vector, irq_handler_t handler, void *ctx, enum irq_flags flags);

irq_register_full

void irq_register_full(struct irq_desc *d);

irq_set_chip

void irq_set_chip(uint8_t vector, struct irq_chip *chip, void *data);

irq_mark_self_in_interrupt

void irq_mark_self_in_interrupt(bool new);

irq_in_interrupt

bool irq_in_interrupt(void);

irq_in_thread_context

bool irq_in_thread_context(void);

irq_vector_is_exception

bool irq_vector_is_exception(uint8_t vector);

ipi_send

void ipi_send(uint32_t apic_id, uint8_t vector);

nmi_send

void nmi_send(uint32_t apic_id);

irq_set_alloc

void irq_set_alloc(int32_t entry, bool used);

irq_alloc_entry

int32_t irq_alloc_entry(void);

irq_free_entry

void irq_free_entry(int32_t entry);

irq_is_installed

bool irq_is_installed(int32_t entry);

irq_free_entry

void irq_free_entry(int32_t entry);

irq_disable

void irq_disable(irq_t irq);

irq_enable

void irq_enable(irq_t irq);

Macros

IRQ_DIV_BY_Z

#define IRQ_DIV_BY_Z 0x0

IRQ_DEBUG

#define IRQ_DEBUG 0x1

IRQ_NMI

#define IRQ_NMI 0x2

IRQ_BREAKPOINT

#define IRQ_BREAKPOINT 0x3

IRQ_DBF

#define IRQ_DBF 0x8

IRQ_SSF

#define IRQ_SSF 0xC

IRQ_GPF

#define IRQ_GPF 0xD

IRQ_PAGE_FAULT

#define IRQ_PAGE_FAULT 0xE

IRQ_TIMER

#define IRQ_TIMER 0x20

IRQ_SCHEDULER

#define IRQ_SCHEDULER IRQ_TIMER

IRQ_TLB_SHOOTDOWN

#define IRQ_TLB_SHOOTDOWN 0x22

IRQ_NOP

#define IRQ_NOP 0x24

IRQ_EXCEPTION_COUNT

#define IRQ_EXCEPTION_COUNT 32

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