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/* note pci_set_dma_mask isn't here, since it's a public function 10 * exported from drivers/pci, use dma_supported instead */ 11 12static inline int 13pci_dma_supported(struct pci_dev *hwdev, u64 mask) 14{ 15 return dma_supported(hwdev == NULL ? NULL : &hwdev->dev, mask); 16} 17 18static inline void * 19pci_alloc_consistent(struct pci_dev *hwdev, size_t size, 20 dma_addr_t *dma_handle) 21{ 22 return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC); 23} 24 25static inline void 26pci_free_consistent(struct pci_dev *hwdev, size_t size, 27 void *vaddr, dma_addr_t dma_handle) 28{ 29 dma_free_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, vaddr, dma_handle); 30} 31 32static inline dma_addr_t 33pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction) 34{ 35 return dma_map_single(hwdev == NULL ? NULL : &hwdev->dev, ptr, size, (enum dma_data_direction)direction); 36} 37 38static inline void 39pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, 40 size_t size, int direction) 41{ 42 dma_unmap_single(hwdev == NULL ? NULL : &hwdev->dev, dma_addr, size, (enum dma_data_direction)direction); 43} 44 45static inline dma_addr_t 46pci_map_page(struct pci_dev *hwdev, struct page *page, 47 unsigned long offset, size_t size, int direction) 48{ 49 return dma_map_page(hwdev == NULL ? NULL : &hwdev->dev, page, offset, size, (enum dma_data_direction)direction); 50} 51 52static inline void 53pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address, 54 size_t size, int direction) 55{ 56 dma_unmap_page(hwdev == NULL ? NULL : &hwdev->dev, dma_address, size, (enum dma_data_direction)direction); 57} 58 59static inline int 60pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, 61 int nents, int direction) 62{ 63 return dma_map_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction); 64} 65 66static inline void 67pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, 68 int nents, int direction) 69{ 70 dma_unmap_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction); 71} 72 73static inline void 74pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle, 75 size_t size, int direction) 76{ 77 dma_sync_single_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); 78} 79 80static inline void 81pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle, 82 size_t size, int direction) 83{ 84 dma_sync_single_for_device(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); 85} 86 87static inline void 88pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg, 89 int nelems, int direction) 90{ 91 dma_sync_sg_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction); 92} 93 94static inline void 95pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg, 96 int nelems, int direction) 97{ 98 dma_sync_sg_for_device(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction); 99} 100 101static inline int 102pci_dma_mapping_error(dma_addr_t dma_addr) 103{ 104 return dma_mapping_error(dma_addr); 105} 106 107#endif 108