projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ASM_SH64_DMA_H |
| 2 | #define __ASM_SH64_DMA_H | |
| 3 | ||
| 4 | /* | |
| 5 | * This file is subject to the terms and conditions of the GNU General Public | |
| 6 | * License. See the file "COPYING" in the main directory of this archive | |
| 7 | * for more details. | |
| 8 | * | |
| 9 | * include/asm-sh64/dma.h | |
| 10 | * | |
| 11 | * Copyright (C) 2000, 2001 Paolo Alberelli | |
| 12 | * Copyright (C) 2003 Paul Mundt | |
| 13 | * | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/mm.h> | |
| 17 | #include <asm/io.h> | |
| 18 | #include <asm/pgtable.h> | |
| 19 | ||
| 20 | #define MAX_DMA_CHANNELS 4 | |
| 21 | ||
| 22 | /* | |
| 23 | * SH5 can DMA in any memory area. | |
| 24 | * | |
| 25 | * The static definition is dodgy because it should limit | |
| 26 | * the highest DMA-able address based on the actual | |
| 27 | * Physical memory available. This is actually performed | |
| 28 | * at run time in defining the memory allowed to DMA_ZONE. | |
| 29 | */ | |
| 30 | #define MAX_DMA_ADDRESS ~(NPHYS_MASK) | |
| 31 | ||
| 32 | #define DMA_MODE_READ 0 | |
| 33 | #define DMA_MODE_WRITE 1 | |
| 34 | ||
| 35 | #ifdef CONFIG_PCI | |
| 36 | extern int isa_dma_bridge_buggy; | |
| 37 | #else | |
| 38 | #define isa_dma_bridge_buggy (0) | |
| 39 | #endif | |
| 40 | ||
| 41 | #endif /* __ASM_SH64_DMA_H */ |