Commit | Line | Data |
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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 | { |
ee664a92 | 23 | #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) |
87e677c4 SR |
24 | if (sparc_cpu_model == sparc_leon) |
25 | return leon_dma_ops; | |
26 | else if (dev->bus == &pci_bus_type) | |
ee664a92 FT |
27 | return &pci32_dma_ops; |
28 | #endif | |
02f7a189 | 29 | return dma_ops; |
d6986415 FT |
30 | } |
31 | ||
02f7a189 | 32 | #include <asm-generic/dma-mapping-common.h> |
d6986415 | 33 | |
c416258a AP |
34 | #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) |
35 | ||
36 | static inline void *dma_alloc_attrs(struct device *dev, size_t size, | |
37 | dma_addr_t *dma_handle, gfp_t flag, | |
38 | struct dma_attrs *attrs) | |
d6986415 | 39 | { |
02f7a189 | 40 | struct dma_map_ops *ops = get_dma_ops(dev); |
451d7400 | 41 | void *cpu_addr; |
d6986415 | 42 | |
c416258a | 43 | cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs); |
451d7400 FT |
44 | debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); |
45 | return cpu_addr; | |
d6986415 | 46 | } |
b9f69f4f | 47 | |
c416258a AP |
48 | #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) |
49 | ||
50 | static inline void dma_free_attrs(struct device *dev, size_t size, | |
51 | void *cpu_addr, dma_addr_t dma_handle, | |
52 | struct dma_attrs *attrs) | |
b9f69f4f | 53 | { |
02f7a189 | 54 | struct dma_map_ops *ops = get_dma_ops(dev); |
b9f69f4f | 55 | |
451d7400 | 56 | debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); |
c416258a | 57 | ops->free(dev, size, cpu_addr, dma_handle, attrs); |
b9f69f4f FT |
58 | } |
59 | ||
d6986415 FT |
60 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
61 | { | |
5d346d10 | 62 | debug_dma_mapping_error(dev, dma_addr); |
d6986415 FT |
63 | return (dma_addr == DMA_ERROR_CODE); |
64 | } | |
65 | ||
34900429 FT |
66 | static inline int dma_set_mask(struct device *dev, u64 mask) |
67 | { | |
68 | #ifdef CONFIG_PCI | |
69 | if (dev->bus == &pci_bus_type) { | |
70 | if (!dev->dma_mask || !dma_supported(dev, mask)) | |
71 | return -EINVAL; | |
72 | *dev->dma_mask = mask; | |
73 | return 0; | |
74 | } | |
75 | #endif | |
76 | return -EINVAL; | |
77 | } | |
78 | ||
f5e706ad | 79 | #endif |