| Michal Simek | 69b1b78 | 2009-03-27 14:25:35 +0100 | [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_MAPPING_H |
| 10 | #define _ASM_MICROBLAZE_DMA_MAPPING_H |
| 11 | |
| 12 | #include <asm/cacheflush.h> |
| 13 | #include <linux/io.h> |
| 14 | #include <linux/bug.h> |
| 15 | |
| 16 | struct scatterlist; |
| 17 | |
| 18 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) |
| 19 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) |
| 20 | |
| 21 | /* FIXME */ |
| 22 | static inline int |
| 23 | dma_supported(struct device *dev, u64 mask) |
| 24 | { |
| 25 | return 1; |
| 26 | } |
| 27 | |
| 28 | static inline dma_addr_t |
| 29 | dma_map_page(struct device *dev, struct page *page, |
| 30 | unsigned long offset, size_t size, |
| 31 | enum dma_data_direction direction) |
| 32 | { |
| 33 | BUG(); |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | static inline void |
| 38 | dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, |
| 39 | enum dma_data_direction direction) |
| 40 | { |
| 41 | BUG(); |
| 42 | } |
| 43 | |
| 44 | static inline int |
| 45 | dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, |
| 46 | enum dma_data_direction direction) |
| 47 | { |
| 48 | BUG(); |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | static inline void |
| 53 | dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, |
| 54 | enum dma_data_direction direction) |
| 55 | { |
| 56 | BUG(); |
| 57 | } |
| 58 | |
| 59 | static inline void |
| 60 | dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, |
| 61 | enum dma_data_direction direction) |
| 62 | { |
| 63 | BUG(); |
| 64 | } |
| 65 | |
| 66 | static inline void |
| 67 | dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, |
| 68 | size_t size, enum dma_data_direction direction) |
| 69 | { |
| 70 | BUG(); |
| 71 | } |
| 72 | |
| 73 | static inline void |
| 74 | dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, |
| 75 | enum dma_data_direction direction) |
| 76 | { |
| 77 | BUG(); |
| 78 | } |
| 79 | |
| 80 | static inline void |
| 81 | dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, |
| 82 | enum dma_data_direction direction) |
| 83 | { |
| 84 | BUG(); |
| 85 | } |
| 86 | |
| 87 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
| 88 | { |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | static inline void *dma_alloc_coherent(struct device *dev, size_t size, |
| 93 | dma_addr_t *dma_handle, int flag) |
| 94 | { |
| 95 | return NULL; /* consistent_alloc(flag, size, dma_handle); */ |
| 96 | } |
| 97 | |
| 98 | static inline void dma_free_coherent(struct device *dev, size_t size, |
| 99 | void *vaddr, dma_addr_t dma_handle) |
| 100 | { |
| 101 | BUG(); |
| 102 | } |
| 103 | |
| 104 | static inline dma_addr_t |
| 105 | dma_map_single(struct device *dev, void *ptr, size_t size, |
| 106 | enum dma_data_direction direction) |
| 107 | { |
| 108 | BUG_ON(direction == DMA_NONE); |
| 109 | |
| 110 | return virt_to_bus(ptr); |
| 111 | } |
| 112 | |
| 113 | static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, |
| 114 | size_t size, |
| 115 | enum dma_data_direction direction) |
| 116 | { |
| 117 | switch (direction) { |
| 118 | case DMA_FROM_DEVICE: |
| 119 | flush_dcache_range((unsigned)dma_addr, |
| 120 | (unsigned)dma_addr + size); |
| 121 | /* Fall through */ |
| 122 | case DMA_TO_DEVICE: |
| 123 | break; |
| 124 | default: |
| 125 | BUG(); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | #endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */ |