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