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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* include this file if the platform implements the dma_ DMA Mapping API |
3 | * and wants to provide the pci_ DMA Mapping API in terms of it */ | |
4 | ||
5 | #ifndef _ASM_GENERIC_PCI_DMA_COMPAT_H | |
6 | #define _ASM_GENERIC_PCI_DMA_COMPAT_H | |
7 | ||
8 | #include <linux/dma-mapping.h> | |
9 | ||
fe537670 | 10 | /* This defines the direction arg to the DMA mapping routines. */ |
546c596c SY |
11 | #define PCI_DMA_BIDIRECTIONAL DMA_BIDIRECTIONAL |
12 | #define PCI_DMA_TODEVICE DMA_TO_DEVICE | |
13 | #define PCI_DMA_FROMDEVICE DMA_FROM_DEVICE | |
14 | #define PCI_DMA_NONE DMA_NONE | |
fe537670 | 15 | |
1da177e4 LT |
16 | static inline void * |
17 | pci_alloc_consistent(struct pci_dev *hwdev, size_t size, | |
18 | dma_addr_t *dma_handle) | |
19 | { | |
4167b2ad | 20 | return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC); |
1da177e4 LT |
21 | } |
22 | ||
82bf0baa JP |
23 | static inline void * |
24 | pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, | |
25 | dma_addr_t *dma_handle) | |
26 | { | |
750afb08 | 27 | return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC); |
82bf0baa JP |
28 | } |
29 | ||
1da177e4 LT |
30 | static inline void |
31 | pci_free_consistent(struct pci_dev *hwdev, size_t size, | |
32 | void *vaddr, dma_addr_t dma_handle) | |
33 | { | |
4167b2ad | 34 | dma_free_coherent(&hwdev->dev, size, vaddr, dma_handle); |
1da177e4 LT |
35 | } |
36 | ||
37 | static inline dma_addr_t | |
38 | pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction) | |
39 | { | |
4167b2ad | 40 | return dma_map_single(&hwdev->dev, ptr, size, (enum dma_data_direction)direction); |
1da177e4 LT |
41 | } |
42 | ||
43 | static inline void | |
44 | pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, | |
45 | size_t size, int direction) | |
46 | { | |
4167b2ad | 47 | dma_unmap_single(&hwdev->dev, dma_addr, size, (enum dma_data_direction)direction); |
1da177e4 LT |
48 | } |
49 | ||
50 | static inline dma_addr_t | |
51 | pci_map_page(struct pci_dev *hwdev, struct page *page, | |
52 | unsigned long offset, size_t size, int direction) | |
53 | { | |
4167b2ad | 54 | return dma_map_page(&hwdev->dev, page, offset, size, (enum dma_data_direction)direction); |
1da177e4 LT |
55 | } |
56 | ||
57 | static inline void | |
58 | pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address, | |
59 | size_t size, int direction) | |
60 | { | |
4167b2ad | 61 | dma_unmap_page(&hwdev->dev, dma_address, size, (enum dma_data_direction)direction); |
1da177e4 LT |
62 | } |
63 | ||
64 | static inline int | |
65 | pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, | |
66 | int nents, int direction) | |
67 | { | |
4167b2ad | 68 | return dma_map_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction); |
1da177e4 LT |
69 | } |
70 | ||
71 | static inline void | |
72 | pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, | |
73 | int nents, int direction) | |
74 | { | |
4167b2ad | 75 | dma_unmap_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction); |
1da177e4 LT |
76 | } |
77 | ||
78 | static inline void | |
79 | pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle, | |
80 | size_t size, int direction) | |
81 | { | |
4167b2ad | 82 | dma_sync_single_for_cpu(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); |
1da177e4 LT |
83 | } |
84 | ||
85 | static inline void | |
86 | pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle, | |
87 | size_t size, int direction) | |
88 | { | |
4167b2ad | 89 | dma_sync_single_for_device(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); |
1da177e4 LT |
90 | } |
91 | ||
92 | static inline void | |
93 | pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg, | |
94 | int nelems, int direction) | |
95 | { | |
4167b2ad | 96 | dma_sync_sg_for_cpu(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction); |
1da177e4 LT |
97 | } |
98 | ||
99 | static inline void | |
100 | pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg, | |
101 | int nelems, int direction) | |
102 | { | |
4167b2ad | 103 | dma_sync_sg_for_device(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction); |
1da177e4 LT |
104 | } |
105 | ||
106 | static inline int | |
8d8bb39b | 107 | pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr) |
1da177e4 | 108 | { |
8d8bb39b | 109 | return dma_mapping_error(&pdev->dev, dma_addr); |
1da177e4 LT |
110 | } |
111 | ||
5f3cd1e0 FT |
112 | #ifdef CONFIG_PCI |
113 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) | |
114 | { | |
115 | return dma_set_mask(&dev->dev, mask); | |
116 | } | |
117 | ||
118 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) | |
119 | { | |
120 | return dma_set_coherent_mask(&dev->dev, mask); | |
121 | } | |
fe537670 BH |
122 | #else |
123 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) | |
124 | { return -EIO; } | |
125 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) | |
126 | { return -EIO; } | |
5f3cd1e0 FT |
127 | #endif |
128 | ||
1da177e4 | 129 | #endif |