| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2006 Atmark Techno, Inc. |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| 7 | */ |
| 8 | |
| 9 | #ifndef _ASM_MICROBLAZE_DMA_H |
| 10 | #define _ASM_MICROBLAZE_DMA_H |
| 11 | |
| 12 | #ifndef CONFIG_MMU |
| 13 | /* we don't have dma address limit. define it as zero to be |
| 14 | * unlimited. */ |
| 15 | #define MAX_DMA_ADDRESS (0) |
| 16 | #else |
| 17 | /* Virtual address corresponding to last available physical memory address. */ |
| 18 | #define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1) |
| 19 | #endif |
| 20 | |
| 21 | #ifdef CONFIG_PCI |
| 22 | extern int isa_dma_bridge_buggy; |
| 23 | #else |
| 24 | #define isa_dma_bridge_buggy (0) |
| 25 | #endif |
| 26 | |
| 27 | #endif /* _ASM_MICROBLAZE_DMA_H */ |