1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/dma.h	Sun Aug 06 06:13:51 2006 +0000
     1.3 @@ -0,0 +1,47 @@
     1.4 +/**
     1.5 + * $Id: dma.h,v 1.1 2006-07-11 01:35:23 nkeynes Exp $
     1.6 + * 
     1.7 + * DMA support code
     1.8 + *
     1.9 + * Copyright (c) 2006 Nathan Keynes.
    1.10 + *
    1.11 + * This program is free software; you can redistribute it and/or modify
    1.12 + * it under the terms of the GNU General Public License as published by
    1.13 + * the Free Software Foundation; either version 2 of the License, or
    1.14 + * (at your option) any later version.
    1.15 + *
    1.16 + * This program is distributed in the hope that it will be useful,
    1.17 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.18 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.19 + * GNU General Public License for more details.
    1.20 + */
    1.21 +
    1.22 +#include "lib.h"
    1.23 +
    1.24 +/**
    1.25 + * Setup the DMAC for a transfer. Assumes 32-byte block transfer.
    1.26 + * Caller is responsible for making sure no-one else is using the
    1.27 + * channel already. 
    1.28 + *
    1.29 + * @param channel DMA channel to use, 0 to 3
    1.30 + * @param source source address (if a memory source)
    1.31 + * @param dest   destination address (if a memory destination)
    1.32 + * @param length number of bytes to transfer (must be a multiple of
    1.33 + *               32.
    1.34 + * @param direction 0 = host to device, 1 = device to host
    1.35 + */
    1.36 +void dmac_prepare_channel( int channel, uint32_t source, uint32_t dest,
    1.37 +			   uint32_t length, int direction );
    1.38 +
    1.39 +/**
    1.40 + * Transfer data to the PVR via DMA. Target address should be
    1.41 + * 0x10000000 for the TA, and 0x11000000 + VRAM address for VRAM.
    1.42 + *
    1.43 + * @param target Target address
    1.44 + * @param buf    Data to write (must be 32-byte aligned)
    1.45 + * @param length Size of data to write, in bytes.
    1.46 + * @param region Target region for VRAM writes, 0 for 64-byte region, 1 for 32-byte region.
    1.47 + *
    1.48 + * @return 0 on success, non-zero on failure.
    1.49 + */
    1.50 +int pvr_dma_write( unsigned int target, char *buf, int length, int region );