Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_IA64_DMA_MAPPING_H |
| 2 | #define _ASM_IA64_DMA_MAPPING_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2003-2004 Hewlett-Packard Co |
| 6 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <asm/machvec.h> |
Jens Axboe | 9b6eccf | 2007-10-16 11:27:26 +0200 | [diff] [blame] | 9 | #include <linux/scatterlist.h> |
Fenghua Yu | 62fdd76 | 2008-10-17 12:14:13 -0700 | [diff] [blame] | 10 | #include <asm/swiotlb.h> |
FUJITA Tomonori | 9916219 | 2009-06-17 16:28:14 -0700 | [diff] [blame] | 11 | #include <linux/dma-debug.h> |
Fenghua Yu | 62fdd76 | 2008-10-17 12:14:13 -0700 | [diff] [blame] | 12 | |
John Keller | 175add1 | 2008-11-24 16:47:17 -0600 | [diff] [blame] | 13 | #define ARCH_HAS_DMA_GET_REQUIRED_MASK |
| 14 | |
FUJITA Tomonori | 160c1d8 | 2009-01-05 23:59:02 +0900 | [diff] [blame] | 15 | extern struct dma_map_ops *dma_ops; |
Fenghua Yu | 62fdd76 | 2008-10-17 12:14:13 -0700 | [diff] [blame] | 16 | extern struct ia64_machine_vector ia64_mv; |
| 17 | extern void set_iommu_machvec(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
FUJITA Tomonori | c299030 | 2009-01-07 02:13:42 +0900 | [diff] [blame] | 19 | extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t, |
| 20 | enum dma_data_direction); |
| 21 | extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, |
| 22 | enum dma_data_direction); |
| 23 | |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 24 | static inline void *dma_alloc_coherent(struct device *dev, size_t size, |
| 25 | dma_addr_t *daddr, gfp_t gfp) |
| 26 | { |
FUJITA Tomonori | 160c1d8 | 2009-01-05 23:59:02 +0900 | [diff] [blame] | 27 | struct dma_map_ops *ops = platform_dma_get_ops(dev); |
FUJITA Tomonori | 9916219 | 2009-06-17 16:28:14 -0700 | [diff] [blame] | 28 | void *caddr; |
| 29 | |
| 30 | caddr = ops->alloc_coherent(dev, size, daddr, gfp); |
| 31 | debug_dma_alloc_coherent(dev, size, *daddr, caddr); |
| 32 | return caddr; |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 33 | } |
FUJITA Tomonori | 3a80b6a | 2008-09-08 18:10:10 +0900 | [diff] [blame] | 34 | |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 35 | static inline void dma_free_coherent(struct device *dev, size_t size, |
| 36 | void *caddr, dma_addr_t daddr) |
Roland Dreier | b7de8e7 | 2007-02-14 00:32:53 -0800 | [diff] [blame] | 37 | { |
FUJITA Tomonori | 160c1d8 | 2009-01-05 23:59:02 +0900 | [diff] [blame] | 38 | struct dma_map_ops *ops = platform_dma_get_ops(dev); |
FUJITA Tomonori | 9916219 | 2009-06-17 16:28:14 -0700 | [diff] [blame] | 39 | debug_dma_free_coherent(dev, size, caddr, daddr); |
FUJITA Tomonori | c190ab0 | 2009-01-05 23:36:16 +0900 | [diff] [blame] | 40 | ops->free_coherent(dev, size, caddr, daddr); |
Roland Dreier | b7de8e7 | 2007-02-14 00:32:53 -0800 | [diff] [blame] | 41 | } |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 42 | |
| 43 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) |
| 44 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) |
| 45 | |
FUJITA Tomonori | d6d0a6a | 2009-06-17 16:28:13 -0700 | [diff] [blame] | 46 | #define get_dma_ops(dev) platform_dma_get_ops(dev) |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 47 | |
FUJITA Tomonori | d6d0a6a | 2009-06-17 16:28:13 -0700 | [diff] [blame] | 48 | #include <asm-generic/dma-mapping-common.h> |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 49 | |
| 50 | static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr) |
| 51 | { |
FUJITA Tomonori | 160c1d8 | 2009-01-05 23:59:02 +0900 | [diff] [blame] | 52 | struct dma_map_ops *ops = platform_dma_get_ops(dev); |
FUJITA Tomonori | c190ab0 | 2009-01-05 23:36:16 +0900 | [diff] [blame] | 53 | return ops->mapping_error(dev, daddr); |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 54 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 56 | static inline int dma_supported(struct device *dev, u64 mask) |
| 57 | { |
FUJITA Tomonori | 160c1d8 | 2009-01-05 23:59:02 +0900 | [diff] [blame] | 58 | struct dma_map_ops *ops = platform_dma_get_ops(dev); |
| 59 | return ops->dma_supported(dev, mask); |
FUJITA Tomonori | b7ea6e9 | 2009-01-05 23:36:13 +0900 | [diff] [blame] | 60 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
| 62 | static inline int |
| 63 | dma_set_mask (struct device *dev, u64 mask) |
| 64 | { |
| 65 | if (!dev->dma_mask || !dma_supported(dev, mask)) |
| 66 | return -EIO; |
| 67 | *dev->dma_mask = mask; |
| 68 | return 0; |
| 69 | } |
| 70 | |
FUJITA Tomonori | a0b00ca | 2009-07-10 10:04:56 +0900 | [diff] [blame] | 71 | static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) |
| 72 | { |
| 73 | if (!dev->dma_mask) |
| 74 | return 0; |
| 75 | |
| 76 | return addr + size <= *dev->dma_mask; |
| 77 | } |
| 78 | |
FUJITA Tomonori | 8d4f533 | 2009-07-10 10:05:01 +0900 | [diff] [blame] | 79 | static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) |
| 80 | { |
| 81 | return paddr; |
| 82 | } |
| 83 | |
| 84 | static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) |
| 85 | { |
| 86 | return daddr; |
| 87 | } |
| 88 | |
John W. Linville | e1531b4 | 2005-11-07 00:57:54 -0800 | [diff] [blame] | 89 | extern int dma_get_cache_alignment(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
| 91 | static inline void |
Ralf Baechle | d3fa72e | 2006-12-06 20:38:56 -0800 | [diff] [blame] | 92 | dma_cache_sync (struct device *dev, void *vaddr, size_t size, |
| 93 | enum dma_data_direction dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | { |
| 95 | /* |
| 96 | * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to |
| 97 | * ensure that dma_cache_sync() enforces order, hence the mb(). |
| 98 | */ |
| 99 | mb(); |
| 100 | } |
| 101 | |
Ralf Baechle | f67637e | 2006-12-06 20:38:54 -0800 | [diff] [blame] | 102 | #define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | #endif /* _ASM_IA64_DMA_MAPPING_H */ |