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 */
5 #ifndef _ASM_GENERIC_PCI_DMA_COMPAT_H
6 #define _ASM_GENERIC_PCI_DMA_COMPAT_H
8 #include <linux/dma-mapping.h>
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
17 pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
18 dma_addr_t *dma_handle)
20 return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
24 pci_zalloc_consistent(struct pci_dev *hwdev, size_t size,
25 dma_addr_t *dma_handle)
27 return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
31 pci_free_consistent(struct pci_dev *hwdev, size_t size,
32 void *vaddr, dma_addr_t dma_handle)
34 dma_free_coherent(&hwdev->dev, size, vaddr, dma_handle);
37 static inline dma_addr_t
38 pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
40 return dma_map_single(&hwdev->dev, ptr, size, (enum dma_data_direction)direction);
44 pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
45 size_t size, int direction)
47 dma_unmap_single(&hwdev->dev, dma_addr, size, (enum dma_data_direction)direction);
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)
54 return dma_map_page(&hwdev->dev, page, offset, size, (enum dma_data_direction)direction);
58 pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
59 size_t size, int direction)
61 dma_unmap_page(&hwdev->dev, dma_address, size, (enum dma_data_direction)direction);
65 pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
66 int nents, int direction)
68 return dma_map_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction);
72 pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
73 int nents, int direction)
75 dma_unmap_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction);
79 pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle,
80 size_t size, int direction)
82 dma_sync_single_for_cpu(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
86 pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
87 size_t size, int direction)
89 dma_sync_single_for_device(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
93 pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg,
94 int nelems, int direction)
96 dma_sync_sg_for_cpu(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
100 pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
101 int nelems, int direction)
103 dma_sync_sg_for_device(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
107 pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
109 return dma_mapping_error(&pdev->dev, dma_addr);
113 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
115 return dma_set_mask(&dev->dev, mask);
118 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
120 return dma_set_coherent_mask(&dev->dev, mask);
123 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
125 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)