projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| f5e706ad SR |
1 | #ifndef ___ASM_SPARC_DMA_MAPPING_H |
| 2 | #define ___ASM_SPARC_DMA_MAPPING_H | |
| d6986415 FT |
3 | |
| 4 | #include <linux/scatterlist.h> | |
| 5 | #include <linux/mm.h> | |
| 02f7a189 | 6 | #include <linux/dma-debug.h> |
| b9f69f4f FT |
7 | |
| 8 | #define DMA_ERROR_CODE (~(dma_addr_t)0x0) | |
| 9 | ||
| f05a6865 | 10 | int dma_supported(struct device *dev, u64 mask); |
| b9f69f4f | 11 | |
| d6986415 FT |
12 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) |
| 13 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) | |
| d6986415 | 14 | |
| 87e677c4 SR |
15 | extern struct dma_map_ops *dma_ops; |
| 16 | extern struct dma_map_ops *leon_dma_ops; | |
| 17 | extern struct dma_map_ops pci32_dma_ops; | |
| 18 | ||
| ee664a92 | 19 | extern struct bus_type pci_bus_type; |
| d6986415 | 20 | |
| 02f7a189 | 21 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
| d6986415 | 22 | { |
| b84ca92e | 23 | #ifdef CONFIG_SPARC_LEON |
| 87e677c4 SR |
24 | if (sparc_cpu_model == sparc_leon) |
| 25 | return leon_dma_ops; | |
| b84ca92e AL |
26 | #endif |
| 27 | #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) | |
| 28 | if (dev->bus == &pci_bus_type) | |
| ee664a92 FT |
29 | return &pci32_dma_ops; |
| 30 | #endif | |
| 02f7a189 | 31 | return dma_ops; |
| d6986415 FT |
32 | } |
| 33 | ||
| 02f7a189 | 34 | #include <asm-generic/dma-mapping-common.h> |
| d6986415 | 35 | |
| c416258a AP |
36 | #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) |
| 37 | ||
| 38 | static inline void *dma_alloc_attrs(struct device *dev, size_t size, | |
| 39 | dma_addr_t *dma_handle, gfp_t flag, | |
| 40 | struct dma_attrs *attrs) | |
| d6986415 | 41 | { |
| 02f7a189 | 42 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 451d7400 | 43 | void *cpu_addr; |
| d6986415 | 44 | |
| c416258a | 45 | cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs); |
| 451d7400 FT |
46 | debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); |
| 47 | return cpu_addr; | |
| d6986415 | 48 | } |
| b9f69f4f | 49 | |
| c416258a AP |
50 | #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) |
| 51 | ||
| 52 | static inline void dma_free_attrs(struct device *dev, size_t size, | |
| 53 | void *cpu_addr, dma_addr_t dma_handle, | |
| 54 | struct dma_attrs *attrs) | |
| b9f69f4f | 55 | { |
| 02f7a189 | 56 | struct dma_map_ops *ops = get_dma_ops(dev); |
| b9f69f4f | 57 | |
| 451d7400 | 58 | debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); |
| c416258a | 59 | ops->free(dev, size, cpu_addr, dma_handle, attrs); |
| b9f69f4f FT |
60 | } |
| 61 | ||
| d6986415 FT |
62 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
| 63 | { | |
| 5d346d10 | 64 | debug_dma_mapping_error(dev, dma_addr); |
| d6986415 FT |
65 | return (dma_addr == DMA_ERROR_CODE); |
| 66 | } | |
| 67 | ||
| 34900429 FT |
68 | static inline int dma_set_mask(struct device *dev, u64 mask) |
| 69 | { | |
| 70 | #ifdef CONFIG_PCI | |
| 71 | if (dev->bus == &pci_bus_type) { | |
| 72 | if (!dev->dma_mask || !dma_supported(dev, mask)) | |
| 73 | return -EINVAL; | |
| 74 | *dev->dma_mask = mask; | |
| 75 | return 0; | |
| 76 | } | |
| 77 | #endif | |
| 78 | return -EINVAL; | |
| 79 | } | |
| 80 | ||
| f5e706ad | 81 | #endif |