| 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 | |
| Ralf Baechle | a9b6590 | 2007-03-01 15:30:01 +0000 | [diff] [blame] | 14 | static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, |
| 15 | size_t size) |
| Ralf Baechle | 9a88cbb | 2006-11-16 02:56:12 +0000 | [diff] [blame] | 16 | { |
| 17 | return virt_to_phys(addr); |
| 18 | } |
| 19 | |
| Ralf Baechle | a9b6590 | 2007-03-01 15:30:01 +0000 | [diff] [blame] | 20 | static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, |
| 21 | struct page *page) |
| Ralf Baechle | 9a88cbb | 2006-11-16 02:56:12 +0000 | [diff] [blame] | 22 | { |
| 23 | return page_to_phys(page); |
| 24 | } |
| 25 | |
| Ralf Baechle | a9b6590 | 2007-03-01 15:30:01 +0000 | [diff] [blame] | 26 | static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) |
| Ralf Baechle | 9a88cbb | 2006-11-16 02:56:12 +0000 | [diff] [blame] | 27 | { |
| 28 | return dma_addr; |
| 29 | } |
| 30 | |
| Ralf Baechle | a9b6590 | 2007-03-01 15:30:01 +0000 | [diff] [blame] | 31 | static inline void plat_unmap_dma_mem(dma_addr_t dma_addr) |
| Ralf Baechle | 9a88cbb | 2006-11-16 02:56:12 +0000 | [diff] [blame] | 32 | { |
| 33 | } |
| 34 | |
| 35 | static inline int plat_device_is_coherent(struct device *dev) |
| 36 | { |
| 37 | #ifdef CONFIG_DMA_COHERENT |
| 38 | return 1; |
| 39 | #endif |
| 40 | #ifdef CONFIG_DMA_NONCOHERENT |
| 41 | return 0; |
| 42 | #endif |
| 43 | } |
| 44 | |
| 45 | #endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */ |