Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / include / linux / pci-dma-compat.h
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 *
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 *
24 pci_zalloc_consistent(struct pci_dev *hwdev, size_t size,
25                       dma_addr_t *dma_handle)
26 {
27         return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
28 }
29
30 static inline void
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
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
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
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
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
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
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
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
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
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
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
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
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 }
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; }
127 #endif
128
129 #endif