1 /* SPDX-License-Identifier: GPL-2.0 */
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
10 /* This defines the direction arg to the DMA mapping routines. */
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
15
16 static inline void *
pci_alloc_consistent(struct pci_dev * hwdev,size_t size,dma_addr_t * dma_handle)17 pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
18 dma_addr_t *dma_handle)
19 {
20 return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
21 }
22
23 static inline void *
pci_zalloc_consistent(struct pci_dev * hwdev,size_t size,dma_addr_t * dma_handle)24 pci_zalloc_consistent(struct pci_dev *hwdev, size_t size,
25 dma_addr_t *dma_handle)
26 {
27 return dma_zalloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
28 }
29
30 static inline void
pci_free_consistent(struct pci_dev * hwdev,size_t size,void * vaddr,dma_addr_t dma_handle)31 pci_free_consistent(struct pci_dev *hwdev, size_t size,
32 void *vaddr, dma_addr_t dma_handle)
33 {
34 dma_free_coherent(&hwdev->dev, size, vaddr, dma_handle);
35 }
36
37 static inline dma_addr_t
pci_map_single(struct pci_dev * hwdev,void * ptr,size_t size,int direction)38 pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
39 {
40 return dma_map_single(&hwdev->dev, ptr, size, (enum dma_data_direction)direction);
41 }
42
43 static inline void
pci_unmap_single(struct pci_dev * hwdev,dma_addr_t dma_addr,size_t size,int direction)44 pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
45 size_t size, int direction)
46 {
47 dma_unmap_single(&hwdev->dev, dma_addr, size, (enum dma_data_direction)direction);
48 }
49
50 static inline dma_addr_t
pci_map_page(struct pci_dev * hwdev,struct page * page,unsigned long offset,size_t size,int direction)51 pci_map_page(struct pci_dev *hwdev, struct page *page,
52 unsigned long offset, size_t size, int direction)
53 {
54 return dma_map_page(&hwdev->dev, page, offset, size, (enum dma_data_direction)direction);
55 }
56
57 static inline void
pci_unmap_page(struct pci_dev * hwdev,dma_addr_t dma_address,size_t size,int direction)58 pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
59 size_t size, int direction)
60 {
61 dma_unmap_page(&hwdev->dev, dma_address, size, (enum dma_data_direction)direction);
62 }
63
64 static inline int
pci_map_sg(struct pci_dev * hwdev,struct scatterlist * sg,int nents,int direction)65 pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
66 int nents, int direction)
67 {
68 return dma_map_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction);
69 }
70
71 static inline void
pci_unmap_sg(struct pci_dev * hwdev,struct scatterlist * sg,int nents,int direction)72 pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
73 int nents, int direction)
74 {
75 dma_unmap_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction);
76 }
77
78 static inline void
pci_dma_sync_single_for_cpu(struct pci_dev * hwdev,dma_addr_t dma_handle,size_t size,int direction)79 pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle,
80 size_t size, int direction)
81 {
82 dma_sync_single_for_cpu(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
83 }
84
85 static inline void
pci_dma_sync_single_for_device(struct pci_dev * hwdev,dma_addr_t dma_handle,size_t size,int direction)86 pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
87 size_t size, int direction)
88 {
89 dma_sync_single_for_device(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
90 }
91
92 static inline void
pci_dma_sync_sg_for_cpu(struct pci_dev * hwdev,struct scatterlist * sg,int nelems,int direction)93 pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg,
94 int nelems, int direction)
95 {
96 dma_sync_sg_for_cpu(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
97 }
98
99 static inline void
pci_dma_sync_sg_for_device(struct pci_dev * hwdev,struct scatterlist * sg,int nelems,int direction)100 pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
101 int nelems, int direction)
102 {
103 dma_sync_sg_for_device(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
104 }
105
106 static inline int
pci_dma_mapping_error(struct pci_dev * pdev,dma_addr_t dma_addr)107 pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
108 {
109 return dma_mapping_error(&pdev->dev, dma_addr);
110 }
111
112 #ifdef CONFIG_PCI
pci_set_dma_mask(struct pci_dev * dev,u64 mask)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
pci_set_consistent_dma_mask(struct pci_dev * dev,u64 mask)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 }
122
pci_set_dma_max_seg_size(struct pci_dev * dev,unsigned int size)123 static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
124 unsigned int size)
125 {
126 return dma_set_max_seg_size(&dev->dev, size);
127 }
128
pci_set_dma_seg_boundary(struct pci_dev * dev,unsigned long mask)129 static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
130 unsigned long mask)
131 {
132 return dma_set_seg_boundary(&dev->dev, mask);
133 }
134 #else
pci_set_dma_mask(struct pci_dev * dev,u64 mask)135 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
136 { return -EIO; }
pci_set_consistent_dma_mask(struct pci_dev * dev,u64 mask)137 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
138 { return -EIO; }
pci_set_dma_max_seg_size(struct pci_dev * dev,unsigned int size)139 static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
140 unsigned int size)
141 { return -EIO; }
pci_set_dma_seg_boundary(struct pci_dev * dev,unsigned long mask)142 static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
143 unsigned long mask)
144 { return -EIO; }
145 #endif
146
147 #endif
148