irq.h File Reference

Interrupt subsystem. More...

#include <gctypes.h>
#include "context.h"

Macros
#define	IM_AI   IRQMASK(IRQ_AI)
#define	IM_DSP   (IM_DSP_AI|IM_DSP_ARAM|IM_DSP_DSP)
#define	IM_DSP_AI   IRQMASK(IRQ_DSP_AI)
#define	IM_DSP_ARAM   IRQMASK(IRQ_DSP_ARAM)
#define	IM_DSP_DSP   IRQMASK(IRQ_DSP_DSP)
#define	IM_EXI   (IM_EXI0|IM_EXI1|IM_EXI2)
#define	IM_EXI0   (IM_EXI0_EXI|IM_EXI0_TC|IM_EXI0_EXT)
#define	IM_EXI0_EXI   IRQMASK(IRQ_EXI0_EXI)
#define	IM_EXI0_EXT   IRQMASK(IRQ_EXI0_EXT)
#define	IM_EXI0_TC   IRQMASK(IRQ_EXI0_TC)
#define	IM_EXI1   (IM_EXI1_EXI|IM_EXI1_TC|IM_EXI1_EXT)
#define	IM_EXI1_EXI   IRQMASK(IRQ_EXI1_EXI)
#define	IM_EXI1_EXT   IRQMASK(IRQ_EXI1_EXT)
#define	IM_EXI1_TC   IRQMASK(IRQ_EXI1_TC)
#define	IM_EXI2   (IM_EXI2_EXI|IM_EXI2_TC)
#define	IM_EXI2_EXI   IRQMASK(IRQ_EXI2_EXI)
#define	IM_EXI2_TC   IRQMASK(IRQ_EXI2_TC)
#define	IM_MEM   (IM_MEM0|IM_MEM1|IM_MEM2|IM_MEM3|IM_MEMADDRESS)
#define	IM_MEM0   IRQMASK(IRQ_MEM0)
#define	IM_MEM1   IRQMASK(IRQ_MEM1)
#define	IM_MEM2   IRQMASK(IRQ_MEM2)
#define	IM_MEM3   IRQMASK(IRQ_MEM3)
#define	IM_MEMADDRESS   IRQMASK(IRQ_MEMADDRESS)
#define	IM_NONE   (0xffffffff)
#define	IM_PI_CP   IRQMASK(IRQ_PI_CP)
#define	IM_PI_DEBUG   IRQMASK(IRQ_PI_DEBUG)
#define	IM_PI_DI   IRQMASK(IRQ_PI_DI)
#define	IM_PI_ERROR   IRQMASK(IRQ_PI_ERROR)
#define	IM_PI_HSP   IRQMASK(IRQ_PI_HSP)
#define	IM_PI_PEFINISH   IRQMASK(IRQ_PI_PEFINISH)
#define	IM_PI_PETOKEN   IRQMASK(IRQ_PI_PETOKEN)
#define	IM_PI_RSW   IRQMASK(IRQ_PI_RSW)
#define	IM_PI_SI   IRQMASK(IRQ_PI_SI)
#define	IM_PI_VI   IRQMASK(IRQ_PI_VI)
#define	IRQ_AI   8
#define	IRQ_DSP_AI   5
#define	IRQ_DSP_ARAM   6
#define	IRQ_DSP_DSP   7
#define	IRQ_EXI0_EXI   9
#define	IRQ_EXI0_EXT   11
#define	IRQ_EXI0_TC   10
#define	IRQ_EXI1_EXI   12
#define	IRQ_EXI1_EXT   14
#define	IRQ_EXI1_TC   13
#define	IRQ_EXI2_EXI   15
#define	IRQ_EXI2_TC   16
#define	IRQ_MAX   32
#define	IRQ_MEM0   0
#define	IRQ_MEM1   1
#define	IRQ_MEM2   2
#define	IRQ_MEM3   3
#define	IRQ_MEMADDRESS   4
#define	IRQ_PI_CP   17
#define	IRQ_PI_DEBUG   25
#define	IRQ_PI_DI   21
#define	IRQ_PI_ERROR   23
#define	IRQ_PI_HSP   26
#define	IRQ_PI_PEFINISH   19
#define	IRQ_PI_PETOKEN   18
#define	IRQ_PI_RSW   22
#define	IRQ_PI_SI   20
#define	IRQ_PI_VI   24
#define	IRQMASK(irq)   (0x80000000u>>irq)

Typedefs
typedef void(*	raw_irq_handler_t) (u32 irq, void *ctx)
	function pointer typedef for the interrupt handler callback More...

Functions
void	__MaskIrq (u32 nMask)
void	__UnmaskIrq (u32 nMask)
u32	IRQ_Disable (void)
	Disable the complete IRQ subsystem. No interrupts will be served. Multithreading kernel fully disabled. More...
raw_irq_handler_t	IRQ_Free (u32 nIrq)
	Free an interrupt handler. More...
raw_irq_handler_t	IRQ_GetHandler (u32 nIrq)
	Get the handler from interrupt number. More...
raw_irq_handler_t	IRQ_Request (u32 nIrq, raw_irq_handler_t pHndl, void *pCtx)
	Register an interrupt handler. More...
void	IRQ_Restore (u32 level)
	Restore the IRQ subsystem with the given level. This is function should be used together with IRQ_Disable() More...

Detailed Description

Interrupt subsystem.

Typedef Documentation

raw_irq_handler_t

void(* raw_irq_handler_t)(u32 irq, void *ctx)

function pointer typedef for the interrupt handler callback

Parameters

[in]	irq	interrupt number of triggered interrupt.
[in]	ctx	pointer to the user data.

Function Documentation

IRQ_Disable()

u32 IRQ_Disable

(

void

)

Disable the complete IRQ subsystem. No interrupts will be served. Multithreading kernel fully disabled.

Returns

Old state of the IRQ subsystem

IRQ_Free()

raw_irq_handler_t IRQ_Free

(

u32

nIrq

)

Free an interrupt handler.

Parameters

[in]

nIrq

interrupt number for which to free the handler

Returns

Old interrupt handler, else NULL

IRQ_GetHandler()

raw_irq_handler_t IRQ_GetHandler

(

u32

nIrq

)

Get the handler from interrupt number.

Parameters

[in]

nIrq

interrupt number for which to retrieve the handler

Returns

interrupt handler, else NULL

IRQ_Request()

raw_irq_handler_t IRQ_Request	(	u32	nIrq,
		raw_irq_handler_t	pHndl,
		void *	pCtx
	)

Register an interrupt handler.

Parameters

[in]	nIrq	interrupt number to which to register the handler
[in]	pHndl	pointer to the handler callback function which to call when interrupt has triggered
[in]	pCtx	pointer to user data to pass with, when handler is called

Returns

Old interrupt handler, else NULL

IRQ_Restore()

u32 IRQ_Restore

(

u32

level

)

Restore the IRQ subsystem with the given level. This is function should be used together with IRQ_Disable()

Parameters

[in]

level

IRQ level to restore to.

Returns

none