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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 | ||
10 | extern 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) | |
14 | #define dma_is_consistent(d, h) (1) | |
15 | ||
ee664a92 FT |
16 | extern struct dma_map_ops *dma_ops, pci32_dma_ops; |
17 | extern struct bus_type pci_bus_type; | |
d6986415 | 18 | |
02f7a189 | 19 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
d6986415 | 20 | { |
ee664a92 FT |
21 | #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) |
22 | if (dev->bus == &pci_bus_type) | |
23 | return &pci32_dma_ops; | |
24 | #endif | |
02f7a189 | 25 | return dma_ops; |
d6986415 FT |
26 | } |
27 | ||
02f7a189 | 28 | #include <asm-generic/dma-mapping-common.h> |
d6986415 | 29 | |
02f7a189 FT |
30 | static inline void *dma_alloc_coherent(struct device *dev, size_t size, |
31 | dma_addr_t *dma_handle, gfp_t flag) | |
d6986415 | 32 | { |
02f7a189 | 33 | struct dma_map_ops *ops = get_dma_ops(dev); |
451d7400 | 34 | void *cpu_addr; |
d6986415 | 35 | |
451d7400 FT |
36 | cpu_addr = ops->alloc_coherent(dev, size, dma_handle, flag); |
37 | debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); | |
38 | return cpu_addr; | |
d6986415 | 39 | } |
b9f69f4f | 40 | |
02f7a189 FT |
41 | static inline void dma_free_coherent(struct device *dev, size_t size, |
42 | void *cpu_addr, dma_addr_t dma_handle) | |
b9f69f4f | 43 | { |
02f7a189 | 44 | struct dma_map_ops *ops = get_dma_ops(dev); |
b9f69f4f | 45 | |
451d7400 | 46 | debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); |
02f7a189 | 47 | ops->free_coherent(dev, size, cpu_addr, dma_handle); |
b9f69f4f FT |
48 | } |
49 | ||
d6986415 FT |
50 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
51 | { | |
52 | return (dma_addr == DMA_ERROR_CODE); | |
53 | } | |
54 | ||
34900429 FT |
55 | static inline int dma_set_mask(struct device *dev, u64 mask) |
56 | { | |
57 | #ifdef CONFIG_PCI | |
58 | if (dev->bus == &pci_bus_type) { | |
59 | if (!dev->dma_mask || !dma_supported(dev, mask)) | |
60 | return -EINVAL; | |
61 | *dev->dma_mask = mask; | |
62 | return 0; | |
63 | } | |
64 | #endif | |
65 | return -EINVAL; | |
66 | } | |
67 | ||
f5e706ad | 68 | #endif |