| Ralf Baechle | 9a88cbb | 2006-11-16 02:56:12 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> |
| 7 | * |
| 8 | */ |
| 9 | #ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H |
| 10 | #define __ASM_MACH_GENERIC_DMA_COHERENCE_H |
| 11 | |
| 12 | struct device; |
| 13 | |
| 14 | static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size) |
| 15 | { |
| 16 | return virt_to_phys(addr); |
| 17 | } |
| 18 | |
| 19 | static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) |
| 20 | { |
| 21 | return page_to_phys(page); |
| 22 | } |
| 23 | |
| 24 | static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) |
| 25 | { |
| 26 | return dma_addr; |
| 27 | } |
| 28 | |
| 29 | static void plat_unmap_dma_mem(dma_addr_t dma_addr) |
| 30 | { |
| 31 | } |
| 32 | |
| 33 | static inline int plat_device_is_coherent(struct device *dev) |
| 34 | { |
| 35 | #ifdef CONFIG_DMA_COHERENT |
| 36 | return 1; |
| 37 | #endif |
| 38 | #ifdef CONFIG_DMA_NONCOHERENT |
| 39 | return 0; |
| 40 | #endif |
| 41 | } |
| 42 | |
| 43 | #endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */ |