Search
lxdream.org :: lxdream/test/dma.h
lxdream 0.9.1
released Jun 29
Download Now
filename test/dma.h
changeset 185:6755a04c447f
next561:533f6b478071
author nkeynes
date Sat Aug 05 00:18:21 2006 +0000 (16 years ago)
permissions -rw-r--r--
last change Add error lines to tests with incomplete polys
Split clip tests to separate data file
Add tests for cmd bit 23 ("use list size field")
file annotate diff log raw
nkeynes@185
     1
/**
nkeynes@185
     2
 * $Id: dma.h,v 1.1 2006-07-11 01:35:23 nkeynes Exp $
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 );
.