dma.h File Reference

#include <tamtypes.h>
#include <packet2_types.h>

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Macros
#define	DMA_CHANNEL_VIF0   0x00
#define	DMA_CHANNEL_VIF1   0x01
#define	DMA_CHANNEL_GIF   0x02
#define	DMA_CHANNEL_fromIPU   0x03
#define	DMA_CHANNEL_toIPU   0x04
#define	DMA_CHANNEL_fromSIF0   0x05
#define	DMA_CHANNEL_toSIF1   0x06
#define	DMA_CHANNEL_SIF2   0x07
#define	DMA_CHANNEL_fromSPR   0x08
#define	DMA_CHANNEL_toSPR   0x09
#define	DMA_FLAG_TRANSFERTAG   0x01
#define	DMA_FLAG_INTERRUPTSAFE   0x02

Functions
int	dma_reset (void)
int	dma_channel_initialize (int channel, void *handler, int flags)
void	dma_channel_fast_waits (int channel)
void	dma_wait_fast (void)
int	dma_channel_wait (int channel, int timeout)
void	dma_channel_send_packet2 (packet2_t *packet2, int channel, u8 flush_cache)
int	dma_channel_send_chain (int channel, void *data, int qwc, int flags, int spr)
int	dma_channel_send_chain_ucab (int channel, void *data, int qwc, int flags)
int	dma_channel_send_normal (int channel, void *data, int qwc, int flags, int spr)
int	dma_channel_send_normal_ucab (int channel, void *data, int qwc, int flags)
int	dma_channel_receive_normal (int channel, void *data, int data_size, int flags, int spr)
int	dma_channel_receive_chain (int channel, void *data, int data_size, int flags, int spr)
int	dma_channel_shutdown (int channel, int flags)

Detailed Description

DMA channel utilities

Definition in file dma.h.

Macro Definition Documentation

DMA_CHANNEL_VIF0

#define DMA_CHANNEL_VIF0   0x00

Definition at line 22 of file dma.h.

DMA_CHANNEL_VIF1

#define DMA_CHANNEL_VIF1   0x01

Definition at line 23 of file dma.h.

DMA_CHANNEL_GIF

#define DMA_CHANNEL_GIF   0x02

Definition at line 24 of file dma.h.

DMA_CHANNEL_fromIPU

#define DMA_CHANNEL_fromIPU   0x03

Definition at line 25 of file dma.h.

DMA_CHANNEL_toIPU

#define DMA_CHANNEL_toIPU   0x04

Definition at line 26 of file dma.h.

DMA_CHANNEL_fromSIF0

#define DMA_CHANNEL_fromSIF0   0x05

Definition at line 27 of file dma.h.

DMA_CHANNEL_toSIF1

#define DMA_CHANNEL_toSIF1   0x06

Definition at line 28 of file dma.h.

DMA_CHANNEL_SIF2

#define DMA_CHANNEL_SIF2   0x07

Definition at line 29 of file dma.h.

DMA_CHANNEL_fromSPR

#define DMA_CHANNEL_fromSPR   0x08

Definition at line 30 of file dma.h.

DMA_CHANNEL_toSPR

#define DMA_CHANNEL_toSPR   0x09

Definition at line 31 of file dma.h.

DMA_FLAG_TRANSFERTAG

#define DMA_FLAG_TRANSFERTAG   0x01

Definition at line 33 of file dma.h.

DMA_FLAG_INTERRUPTSAFE

#define DMA_FLAG_INTERRUPTSAFE   0x02

Definition at line 34 of file dma.h.

Function Documentation

dma_reset()

int dma_reset

(

void

)

Definition at line 40 of file dma.c.

dma_channel_initialize()

int dma_channel_initialize	(	int	channel,
		void *	handler,
		int	flags
	)

Initializes the specified dma channel.

Definition at line 58 of file dma.c.

References dma_channel_initialize(), and dma_channel_shutdown().

Referenced by dma_channel_initialize(), dma_channel_receive_chain(), and dma_channel_receive_normal().

dma_channel_fast_waits()

void dma_channel_fast_waits

(

int

channel

)

Enables dma fast waits for that channel

Definition at line 108 of file dma.c.

References dma_channel_fast_waits(), and DMA_REG_PCR.

Referenced by dma_channel_fast_waits().

dma_wait_fast()

void dma_wait_fast

(

void

)

Waits until channel is usable based on coprocessor status

Definition at line 115 of file dma.c.

References dma_wait_fast().

Referenced by dma_wait_fast().

dma_channel_wait()

int dma_channel_wait	(	int	channel,
		int	timeout
	)

Wait until the specified dma channel is ready.

Definition at line 130 of file dma.c.

References dma_channel_wait().

Referenced by dma_channel_wait().

dma_channel_send_packet2()

void dma_channel_send_packet2	(	packet2_t *	packet2,
		int	channel,
		u8	flush_cache
	)

Send packet2. Type chain/normal is choosen from packet2_t.

Parameters

packet2	Pointer to packet.
channel	DMA channel.
flush_cache	Should be cache flushed before send?

Definition at line 158 of file dma.c.

References dma_channel_send_chain(), dma_channel_send_normal(), dma_channel_send_packet2(), packet2_t::mode, packet2_t::next, and packet2_t::tte.

Referenced by dma_channel_send_packet2().

dma_channel_send_chain()

int dma_channel_send_chain	(	int	channel,
		void *	data,
		int	qwc,
		int	flags,
		int	spr
	)

Send a dmachain to the specified dma channel.

Definition at line 185 of file dma.c.

References dma_channel_send_chain(), DMA_REG_STAT, and DMA_SET_CHCR.

Referenced by dma_channel_send_chain(), and dma_channel_send_packet2().

dma_channel_send_chain_ucab()

int dma_channel_send_chain_ucab	(	int	channel,
		void *	data,
		int	qwc,
		int	flags
	)

Send a ucab dmachain to the specified dma channel.

Definition at line 216 of file dma.c.

References dma_channel_send_chain_ucab(), DMA_REG_STAT, and DMA_SET_CHCR.

Referenced by dma_channel_send_chain_ucab().

dma_channel_send_normal()

int dma_channel_send_normal	(	int	channel,
		void *	data,
		int	qwc,
		int	flags,
		int	spr
	)

Send data to the specified dma channel.

Definition at line 240 of file dma.c.

References dma_channel_send_normal(), DMA_REG_STAT, and DMA_SET_CHCR.

Referenced by dma_channel_send_normal(), and dma_channel_send_packet2().

dma_channel_send_normal_ucab()

int dma_channel_send_normal_ucab	(	int	channel,
		void *	data,
		int	qwc,
		int	flags
	)

Send ucab data to the specified dma channel.

Definition at line 269 of file dma.c.

References dma_channel_send_normal_ucab(), DMA_REG_STAT, and DMA_SET_CHCR.

Referenced by dma_channel_send_normal_ucab().

dma_channel_receive_normal()

int dma_channel_receive_normal	(	int	channel,
		void *	data,
		int	data_size,
		int	flags,
		int	spr
	)

Receive data from the specified dma channel.

Definition at line 327 of file dma.c.

References dma_channel_initialize(), dma_channel_receive_normal(), and DMA_SET_CHCR.

Referenced by dma_channel_receive_normal().

dma_channel_receive_chain()

int dma_channel_receive_chain	(	int	channel,
		void *	data,
		int	data_size,
		int	flags,
		int	spr
	)

Receive data from the specified dma channel.

Definition at line 298 of file dma.c.

References dma_channel_initialize(), dma_channel_receive_chain(), and DMA_SET_CHCR.

Referenced by dma_channel_receive_chain().

dma_channel_shutdown()

int dma_channel_shutdown	(	int	channel,
		int	flags
	)

Shut down the specified dma channel.

Definition at line 356 of file dma.c.

References dma_channel_shutdown().

Referenced by dma_channel_initialize(), and dma_channel_shutdown().