| 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 | |
| Sam Ravnborg | f05a686 | 2014-05-16 23:25:50 +0200 | [diff] [blame] | 10 | 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 | |
| David S. Miller | 0d1d909 | 2014-11-26 13:36:41 -0800 | [diff] [blame] | 15 | static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
| 16 | enum dma_data_direction dir) |
| 17 | { |
| 18 | /* Since dma_{alloc,free}_noncoherent() allocated coherent memory, this |
| 19 | * routine can be a nop. |
| 20 | */ |
| 21 | } |
| 22 | |
| Sam Ravnborg | 87e677c | 2012-05-26 15:56:03 +0200 | [diff] [blame] | 23 | extern struct dma_map_ops *dma_ops; |
| 24 | extern struct dma_map_ops *leon_dma_ops; |
| 25 | extern struct dma_map_ops pci32_dma_ops; |
| 26 | |
| FUJITA Tomonori | ee664a9 | 2009-08-10 11:53:16 +0900 | [diff] [blame] | 27 | extern struct bus_type pci_bus_type; |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 28 | |
| 29 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
| 30 | { |
| Andreas Larsson | b84ca92 | 2014-09-08 09:48:52 +0200 | [diff] [blame] | 31 | #ifdef CONFIG_SPARC_LEON |
| Sam Ravnborg | 87e677c | 2012-05-26 15:56:03 +0200 | [diff] [blame] | 32 | if (sparc_cpu_model == sparc_leon) |
| 33 | return leon_dma_ops; |
| Andreas Larsson | b84ca92 | 2014-09-08 09:48:52 +0200 | [diff] [blame] | 34 | #endif |
| 35 | #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) |
| 36 | if (dev->bus == &pci_bus_type) |
| FUJITA Tomonori | ee664a9 | 2009-08-10 11:53:16 +0900 | [diff] [blame] | 37 | return &pci32_dma_ops; |
| 38 | #endif |
| FUJITA Tomonori | 02f7a18 | 2009-08-10 11:53:13 +0900 | [diff] [blame] | 39 | return dma_ops; |
| 40 | } |
| 41 | |
| 42 | #include <asm-generic/dma-mapping-common.h> |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 43 | |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 44 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
| 45 | { |
| Shuah Khan | 5d346d1 | 2012-10-25 18:31:42 -0600 | [diff] [blame] | 46 | debug_dma_mapping_error(dev, dma_addr); |
| FUJITA Tomonori | d698641 | 2009-05-14 16:23:11 +0000 | [diff] [blame] | 47 | return (dma_addr == DMA_ERROR_CODE); |
| 48 | } |
| 49 | |
| FUJITA Tomonori | 3490042 | 2010-03-10 15:23:35 -0800 | [diff] [blame] | 50 | static inline int dma_set_mask(struct device *dev, u64 mask) |
| 51 | { |
| 52 | #ifdef CONFIG_PCI |
| 53 | if (dev->bus == &pci_bus_type) { |
| 54 | if (!dev->dma_mask || !dma_supported(dev, mask)) |
| 55 | return -EINVAL; |
| 56 | *dev->dma_mask = mask; |
| 57 | return 0; |
| 58 | } |
| 59 | #endif |
| 60 | return -EINVAL; |
| 61 | } |
| 62 | |
| Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 63 | #endif |