irq.h File Reference

Timer functionality. More...

#include <sys/cdefs.h>
#include <stdbool.h>
#include <stdint.h>
#include <arch/irq.h>

Go to the source code of this file.

Data Structures
struct	irq_cb_t
	The type of a full callback of an IRQ handler and userdata. More...

Macros
#define	irq_disable_scoped()
	Disable interrupts with scope management.

Typedefs
typedef struct irq_context	irq_context_t
	Architecture-specific structure for holding the processor state.
typedef enum irq_exception	irq_t
	Architecture-specific interrupt exception codes.
typedef uint32_t	irq_mask_t
	Type representing an interrupt mask state.
typedef void(*	irq_hdl_t) (irq_t code, irq_context_t *context, void *data)
	The type of an IRQ handler.

Functions
static void	irq_enable (void)
	Enable all interrupts.
static irq_mask_t	irq_disable (void)
	Disable interrupts.
static void	irq_restore (irq_mask_t state)
	Restore interrupt state.
static bool	irq_inside_int (void)
	Returns whether inside of an interrupt context.
static void	irq_create_context (irq_context_t *context, uintptr_t stack_pointer, uintptr_t routine, const uintptr_t *args)
	Fill a newly allocated context block.
static void	irq_set_context (irq_context_t *cxt)
	Switch out contexts (for interrupt return).
static irq_context_t *	irq_get_context (void)
	Get the current IRQ context.
static int	irq_set_handler (irq_t code, irq_hdl_t hnd, void *data)
	Set or remove an IRQ handler.
static irq_cb_t	irq_get_handler (irq_t code)
	Get the address of the current handler for the IRQ type.
static int	irq_set_global_handler (irq_hdl_t hnd, void *data)
	Set a global exception handler.
static irq_cb_t	irq_get_global_handler (void)
	Get the global exception handler.

Detailed Description

Timer functionality.

This file contains functions for enabling/disabling interrupts, and setting interrupt handlers.

Author

Megan Potter

Paul Cercueil

Falco Girgis

Typedef Documentation

irq_context_t

typedef struct irq_context irq_context_t

Architecture-specific structure for holding the processor state.

This structure should hold register values and other important parts of the processor state.

irq_hdl_t

typedef void(* irq_hdl_t) (irq_t code, irq_context_t *context, void *data)

The type of an IRQ handler.

Parameters

code	The IRQ that caused the handler to be called.
context	The CPU's context.
data	Arbitrary userdata associated with the handler.

irq_mask_t

typedef uint32_t irq_mask_t

Type representing an interrupt mask state.

irq_t

typedef enum irq_exception irq_t

Architecture-specific interrupt exception codes.

Used to identify the source or type of an interrupt.