1 /* 2 * linux/include/asm-arm/arch-tbox/dma.h 3 * 4 * Architecture DMA routines. We have to contend with the bizarre DMA 5 * machine built into the Tbox hardware. 6 * 7 * Copyright (C) 1998 Philip Blundell 8 */ 9 10 /* 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License 13 * as published by the Free Software Foundation; either version 14 * 2 of the License, or (at your option) any later version. 15 */ 16 17 /* 18 * DMA channel definitions. Some of these are physically strange but 19 * we sort it out inside dma.c so the user never has to care. The 20 * exception is the double-buffering which we can't really abstract 21 * away sensibly. 22 */ 23 #define DMA_VIDEO 0 24 #define DMA_MPEG_B 1 25 #define DMA_AUDIO_B 2 26 #define DMA_ASHRX_B 3 27 #define DMA_ASHTX 4 28 #define DMA_MPEG 5 29 #define DMA_AUDIO 6 30 #define DMA_ASHRX 7 31 32 #define MAX_DMA_CHANNELS 0 /* XXX */ 33 34 /* 35 * This is the maximum DMA address that can be DMAd to. 36 */ 37 #define MAX_DMA_ADDRESS 0xffffffff 38