lxdream.org :: lxdream/test/dma.h r812:8cc61d5ea1f8 (annotated)

filename	test/dma.h
changeset	812:8cc61d5ea1f8
prev	561:533f6b478071
author	nkeynes
date	Wed Nov 10 08:37:42 2010 +1000 (13 years ago)
permissions	-rw-r--r--
last change	Add chain pointer to the xlat cache, so that we can maintain multiple blocks for the same address. This prevents thrashing in cases where we would other keep retranslating the same blocks over and over again due to varying xlat_sh4_mode values

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nkeynes@185	1	/**
nkeynes@561	2	* $Id$
nkeynes@185	3	*
nkeynes@185	4	* DMA support code
nkeynes@185	5	*
nkeynes@185	6	* Copyright (c) 2006 Nathan Keynes.
nkeynes@185	7	*
nkeynes@185	8	* This program is free software; you can redistribute it and/or modify
nkeynes@185	9	* it under the terms of the GNU General Public License as published by
nkeynes@185	10	* the Free Software Foundation; either version 2 of the License, or
nkeynes@185	11	* (at your option) any later version.
nkeynes@185	12	*
nkeynes@185	13	* This program is distributed in the hope that it will be useful,
nkeynes@185	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@185	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nkeynes@185	16	* GNU General Public License for more details.
nkeynes@185	17	*/
nkeynes@185	18
nkeynes@185	19	#include "lib.h"
nkeynes@185	20
nkeynes@185	21	/**
nkeynes@185	22	* Setup the DMAC for a transfer. Assumes 32-byte block transfer.
nkeynes@185	23	* Caller is responsible for making sure no-one else is using the
nkeynes@185	24	* channel already.
nkeynes@185	25	*
nkeynes@185	26	* @param channel DMA channel to use, 0 to 3
nkeynes@185	27	* @param source source address (if a memory source)
nkeynes@185	28	* @param dest destination address (if a memory destination)
nkeynes@185	29	* @param length number of bytes to transfer (must be a multiple of
nkeynes@185	30	* 32.
nkeynes@185	31	* @param direction 0 = host to device, 1 = device to host
nkeynes@185	32	*/
nkeynes@185	33	void dmac_prepare_channel( int channel, uint32_t source, uint32_t dest,
nkeynes@185	34	uint32_t length, int direction );
nkeynes@185	35
nkeynes@185	36	/**
nkeynes@185	37	* Transfer data to the PVR via DMA. Target address should be
nkeynes@185	38	* 0x10000000 for the TA, and 0x11000000 + VRAM address for VRAM.
nkeynes@185	39	*
nkeynes@185	40	* @param target Target address
nkeynes@185	41	* @param buf Data to write (must be 32-byte aligned)
nkeynes@185	42	* @param length Size of data to write, in bytes.
nkeynes@185	43	* @param region Target region for VRAM writes, 0 for 64-byte region, 1 for 32-byte region.
nkeynes@185	44	*
nkeynes@185	45	* @return 0 on success, non-zero on failure.
nkeynes@185	46	*/
nkeynes@185	47	int pvr_dma_write( unsigned int target, char *buf, int length, int region );
nkeynes@812	48
nkeynes@812	49	/**
nkeynes@812	50	* Transfer TA data to the PVR via SORT-DMA.
nkeynes@812	51	*
nkeynes@812	52	* @param sorttable Start address of the sort table
nkeynes@812	53	* @param tablelen Size of the sort table (in bytes)
nkeynes@812	54	* @param data Start address of the TA data (polygons)
nkeynes@812	55	* @param datalen Size of the polygon data block (in bytes)
nkeynes@812	56	* @param bitwidth
nkeynes@812	57	* @param datasize
nkeynes@812	58	* @param region Target region for VRAM writes, 0 for 64-byte region, 1 for 32-byte region.
nkeynes@812	59	*
nkeynes@812	60	* @return 0 on success, non-zero on failure.
nkeynes@812	61	*/
nkeynes@812	62	int sort_dma_write( char sorttable, int tablelen, char data, int datalen, int bitwidth, int datasize );
nkeynes@812	63
nkeynes@812	64	int aica_dma_write( uint32_t aica_addr, char *data, uint32_t size );
nkeynes@812	65	int aica_dma_read( char *data, uint32_t aica_addr, uint32_t size );