IRQs

include/irq/irq.h

struct irq_action

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

struct irq_action referenced types:

• irq_handler_t
• struct list_head

struct irq_chip

struct irq_chip {
    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);
};

struct irq_desc

struct irq_desc {
    uint8_t           vector;
    enum irq_flags    flags;
    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;
};

struct irq_desc referenced types:

• enum irq_flags
• struct irq_chip
• struct list_head
• struct cpu_mask

struct 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  rip;
    uint64_t  cs;
    uint64_t  rflags;
    uint64_t  rsp;
    uint64_t  ss;
};

enum irq_result

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

enum 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 alias irq_handler_t

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

type alias irq_handler_t referenced types:

• enum irq_result
• struct irq_context

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);

Defines

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

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