dsp.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include "asm.h"
#include "processor.h"
#include "irq.h"
#include "dsp.h"

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Macros
#define	DSPCR_DSPRESET   0x0800
#define	DSPCR_DSPDMA   0x0200
#define	DSPCR_DSPINTMSK   0x0100
#define	DSPCR_DSPINT   0x0080
#define	DSPCR_ARINTMSK   0x0040
#define	DSPCR_ARINT   0x0020
#define	DSPCR_AIINTMSK   0x0010
#define	DSPCR_AIINT   0x0008
#define	DSPCR_HALT   0x0004
#define	DSPCR_PIINT   0x0002
#define	DSPCR_RES   0x0001
#define	_SHIFTL(v, s, w)   ((u32) (((u32)(v) & ((0x01 << (w)) - 1)) << (s)))
#define	_SHIFTR(v, s, w)   ((u32)(((u32)(v) >> (s)) & ((0x01 << (w)) - 1)))

Functions
static void	__dsp_inserttask (dsptask_t *task)
static void	__dsp_removetask (dsptask_t *task)
static void	__dsp_boottask (dsptask_t *task)
static void	__dsp_exectask (dsptask_t *exec, dsptask_t *hire)
static void	__dsp_def_taskcb ()
static void	__dsp_inthandler (u32 nIrq, void *pCtx)
void	DSP_Init ()
	Initialize DSP subsystem. More...
DSPCallback	DSP_RegisterCallback (DSPCallback usr_cb)
	Register an user's interrupt callback. This may be used to handle DSP interrupts on its own. By default a system default callback is installed on DSP_Init(). More...
u32	DSP_CheckMailTo ()
	Check if mail was sent to DSP. More...
u32	DSP_CheckMailFrom ()
	Check for mail from DSP. More...
u32	DSP_ReadMailFrom ()
	Read mail from DSP. More...
void	DSP_SendMailTo (u32 mail)
	Send mail to DSP. More...
u32	DSP_ReadCPUtoDSP ()
	Read back CPU->DSP mailbox. More...
void	DSP_AssertInt ()
	Asserts the processor interface interrupt. More...
void	DSP_Reset ()
void	DSP_Halt ()
void	DSP_Unhalt ()
u32	DSP_GetDMAStatus ()
dsptask_t *	DSP_AddTask (dsptask_t *task)
	Add a DSP task to the tasklist and start executing if necessary. More...
void	DSP_CancelTask (dsptask_t *task)
dsptask_t *	DSP_AssertTask (dsptask_t *task)

Variables
static u32	__dsp_inited = FALSE
static u32	__dsp_rudetask_pend = FALSE
static DSPCallback	__dsp_intcb = NULL
static dsptask_t *	__dsp_currtask
static dsptask_t *	__dsp_lasttask
static dsptask_t *	__dsp_firsttask
static dsptask_t *	__dsp_rudetask
static dsptask_t *	tmp_task
static vu16 *const	_dspReg = (u16*)0xCC005000

Macro Definition Documentation

_SHIFTL

#define _SHIFTL	(		v,
			s,
			w
	)		((u32) (((u32)(v) & ((0x01 << (w)) - 1)) << (s)))

_SHIFTR

#define _SHIFTR	(		v,
			s,
			w
	)		((u32)(((u32)(v) >> (s)) & ((0x01 << (w)) - 1)))

DSPCR_AIINT

#define DSPCR_AIINT   0x0008

DSPCR_AIINTMSK

#define DSPCR_AIINTMSK   0x0010

DSPCR_ARINT

#define DSPCR_ARINT   0x0020

DSPCR_ARINTMSK

#define DSPCR_ARINTMSK   0x0040

DSPCR_DSPDMA

#define DSPCR_DSPDMA   0x0200

DSPCR_DSPINT

#define DSPCR_DSPINT   0x0080

DSPCR_DSPINTMSK

#define DSPCR_DSPINTMSK   0x0100

DSPCR_DSPRESET

#define DSPCR_DSPRESET   0x0800

DSPCR_HALT

#define DSPCR_HALT   0x0004

DSPCR_PIINT

#define DSPCR_PIINT   0x0002

DSPCR_RES

#define DSPCR_RES   0x0001

Function Documentation

__dsp_boottask()

static void __dsp_boottask ( dsptask_t *  task )

static

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__dsp_def_taskcb()

static void __dsp_def_taskcb ( )

static

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__dsp_exectask()

static void __dsp_exectask ( dsptask_t *  exec, dsptask_t *  hire  )

static

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__dsp_inserttask()

static void __dsp_inserttask ( dsptask_t *  task )

static

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__dsp_inthandler()

static void __dsp_inthandler ( u32  nIrq, void *  pCtx  )

static

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__dsp_removetask()

static void __dsp_removetask ( dsptask_t *  task )

static

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DSP_AddTask()

dsptask_t* DSP_AddTask

(

dsptask_t *

task

)

Add a DSP task to the tasklist and start executing if necessary.

Parameters

[in]

task

pointer to a dsptask_t structure which holds all necessary values for DSP task execution.

Returns

current task

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DSP_AssertInt()

void DSP_AssertInt

(

)

Asserts the processor interface interrupt.

Returns

none

DSP_AssertTask()

dsptask_t* DSP_AssertTask

(

dsptask_t *

task

)

DSP_CancelTask()

void DSP_CancelTask

(

dsptask_t *

task

)

DSP_CheckMailFrom()

u32 DSP_CheckMailFrom

(

)

Check for mail from DSP.

Returns

1: has mail, 0: no mail

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DSP_CheckMailTo()

u32 DSP_CheckMailTo

(

)

Check if mail was sent to DSP.

Returns

1: mail sent, 0: mail on route

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DSP_GetDMAStatus()

u32 DSP_GetDMAStatus

(

)

DSP_Halt()

void DSP_Halt

(

)

DSP_Init()

void DSP_Init

(

)

Initialize DSP subsystem.

Returns

none

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DSP_ReadCPUtoDSP()

u32 DSP_ReadCPUtoDSP

(

)

Read back CPU->DSP mailbox.

Returns

mail value received

DSP_ReadMailFrom()

u32 DSP_ReadMailFrom

(

)

Read mail from DSP.

Returns

mail value received

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DSP_RegisterCallback()

DSPCallback DSP_RegisterCallback

(

DSPCallback

usr_cb

)

Register an user's interrupt callback. This may be used to handle DSP interrupts on its own. By default a system default callback is installed on DSP_Init().

Parameters

[in]

user_cb

pointer to the user's interrupt callback function. \

Returns

pointer to old interrupt callback function.

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DSP_Reset()

void DSP_Reset

(

)

DSP_SendMailTo()

void DSP_SendMailTo

(

u32

mail

)

Send mail to DSP.

Parameters

[in]

mail

value to send

Returns

none

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DSP_Unhalt()

void DSP_Unhalt

(

)

Variable Documentation

__dsp_currtask

dsptask_t* __dsp_currtask

static

__dsp_firsttask

dsptask_t * __dsp_firsttask

static

__dsp_inited

u32 __dsp_inited = FALSE

static

__dsp_intcb

DSPCallback __dsp_intcb = NULL

static

__dsp_lasttask

dsptask_t * __dsp_lasttask

static

__dsp_rudetask

dsptask_t * __dsp_rudetask

static

__dsp_rudetask_pend

u32 __dsp_rudetask_pend = FALSE

static

_dspReg

vu16* const _dspReg = (u16*)0xCC005000

static

tmp_task

dsptask_t * tmp_task

static