| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |