| Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 1 | #ifndef ___ASM_SPARC_DMA_MAPPING_H |
| 2 | #define ___ASM_SPARC_DMA_MAPPING_H |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 3 | |
| 4 | #include <linux/scatterlist.h> |
| 5 | #include <linux/mm.h> |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 6 | #include <linux/dma-debug.h> |
| FUJITA Tomonori | b9f69f4 | 2009-05-14 16:23:08 +0000 | [diff] [blame] | 7 | |
| 8 | #define DMA_ERROR_CODE (~(dma_addr_t)0x0) |
| 9 | |
| 10 | extern int dma_supported(struct device *dev, u64 mask); |
| FUJITA Tomonori | b9f69f4 | 2009-05-14 16:23:08 +0000 | [diff] [blame] | 11 | |
| FUJITA Tomonori | b9f69f4 | 2009-05-14 16:23:08 +0000 | [diff] [blame] | 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) |
| FUJITA Tomonori | b9f69f4 | 2009-05-14 16:23:08 +0000 | [diff] [blame] | 14 | |
| FUJITA Tomonori | ee664a9 | 2009-08-10 11:53:16 +0900 | [diff] [blame] | 15 | extern struct dma_map_ops *dma_ops, pci32_dma_ops; |
| 16 | extern struct bus_type pci_bus_type; |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 17 | |
| 18 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
| 19 | { |
| FUJITA Tomonori | ee664a9 | 2009-08-10 11:53:16 +0900 | [diff] [blame] | 20 | #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) |
| 21 | if (dev->bus == &pci_bus_type) |
| 22 | return &pci32_dma_ops; |
| 23 | #endif |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 24 | return dma_ops; |
| 25 | } |
| 26 | |
| 27 | #include <asm-generic/dma-mapping-common.h> |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 28 | |
| 29 | static inline void *dma_alloc_coherent(struct device *dev, size_t size, |
| 30 | dma_addr_t *dma_handle, gfp_t flag) |
| 31 | { |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 32 | struct dma_map_ops *ops = get_dma_ops(dev); |
| FUJITA Tomonori | 451d740 | 2009-08-10 11:53:17 +0900 | [diff] [blame] | 33 | void *cpu_addr; |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 34 | |
| FUJITA Tomonori | 451d740 | 2009-08-10 11:53:17 +0900 | [diff] [blame] | 35 | cpu_addr = ops->alloc_coherent(dev, size, dma_handle, flag); |
| 36 | debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); |
| 37 | return cpu_addr; |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | static inline void dma_free_coherent(struct device *dev, size_t size, |
| 41 | void *cpu_addr, dma_addr_t dma_handle) |
| 42 | { |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 43 | struct dma_map_ops *ops = get_dma_ops(dev); |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 44 | |
| FUJITA Tomonori | 451d740 | 2009-08-10 11:53:17 +0900 | [diff] [blame] | 45 | debug_dma_free_coherent(dev, size, cpu_addr, dma_handle); |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 46 | ops->free_coherent(dev, size, cpu_addr, dma_handle); |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 49 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
| 50 | { |
| 51 | return (dma_addr == DMA_ERROR_CODE); |
| 52 | } |
| 53 | |
| FUJITA Tomonori | 3490042 | 2010-03-10 15:23:35 -0800 | [diff] [blame] | 54 | static inline int dma_set_mask(struct device *dev, u64 mask) |
| 55 | { |
| 56 | #ifdef CONFIG_PCI |
| 57 | if (dev->bus == &pci_bus_type) { |
| 58 | if (!dev->dma_mask || !dma_supported(dev, mask)) |
| 59 | return -EINVAL; |
| 60 | *dev->dma_mask = mask; |
| 61 | return 0; |
| 62 | } |
| 63 | #endif |
| 64 | return -EINVAL; |
| 65 | } |
| 66 | |
| Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 67 | #endif |