projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 42d226c7 ST |
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, 07 Ralf Baechle <ralf@linux-mips.org> | |
| 7 | * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology | |
| 8 | * Author: Fuxin Zhang, zhangfx@lemote.com | |
| 9 | * | |
| 10 | */ | |
| 8e497117 WZ |
11 | #ifndef __ASM_MACH_LOONGSON_DMA_COHERENCE_H |
| 12 | #define __ASM_MACH_LOONGSON_DMA_COHERENCE_H | |
| 42d226c7 ST |
13 | |
| 14 | struct device; | |
| 15 | ||
| 16 | static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, | |
| 17 | size_t size) | |
| 18 | { | |
| 19 | return virt_to_phys(addr) | 0x80000000; | |
| 20 | } | |
| 21 | ||
| 22 | static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, | |
| 23 | struct page *page) | |
| 24 | { | |
| 25 | return page_to_phys(page) | 0x80000000; | |
| 26 | } | |
| 27 | ||
| 3807ef3f KC |
28 | static inline unsigned long plat_dma_addr_to_phys(struct device *dev, |
| 29 | dma_addr_t dma_addr) | |
| 42d226c7 | 30 | { |
| 6f7a251a WZ |
31 | #if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT) |
| 32 | return (dma_addr > 0x8fffffff) ? dma_addr : (dma_addr & 0x0fffffff); | |
| 33 | #else | |
| 42d226c7 | 34 | return dma_addr & 0x7fffffff; |
| 6f7a251a | 35 | #endif |
| 42d226c7 ST |
36 | } |
| 37 | ||
| d3f634b9 KC |
38 | static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, |
| 39 | size_t size, enum dma_data_direction direction) | |
| 42d226c7 ST |
40 | { |
| 41 | } | |
| 42 | ||
| 843aef49 DD |
43 | static inline int plat_dma_supported(struct device *dev, u64 mask) |
| 44 | { | |
| 45 | /* | |
| 46 | * we fall back to GFP_DMA when the mask isn't all 1s, | |
| 47 | * so we can't guarantee allocations that must be | |
| 48 | * within a tighter range than GFP_DMA.. | |
| 49 | */ | |
| 50 | if (mask < DMA_BIT_MASK(24)) | |
| 51 | return 0; | |
| 52 | ||
| 53 | return 1; | |
| 54 | } | |
| 55 | ||
| 42d226c7 ST |
56 | static inline int plat_device_is_coherent(struct device *dev) |
| 57 | { | |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 8e497117 | 61 | #endif /* __ASM_MACH_LOONGSON_DMA_COHERENCE_H */ |