Edit File: pci-dma-compat.h
/* include this file if the platform implements the dma_ DMA Mapping API * and wants to provide the pci_ DMA Mapping API in terms of it */ #ifndef _ASM_GENERIC_PCI_DMA_COMPAT_H #define _ASM_GENERIC_PCI_DMA_COMPAT_H #include <linux/dma-mapping.h> static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask) { return dma_supported(hwdev == NULL ? NULL : &hwdev->dev, mask); } /* This defines the direction arg to the DMA mapping routines. */ #define PCI_DMA_BIDIRECTIONAL 0 #define PCI_DMA_TODEVICE 1 #define PCI_DMA_FROMDEVICE 2 #define PCI_DMA_NONE 3 static inline void * pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle) { return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC); } static inline void * pci_zalloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle) { return dma_zalloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC); } static inline void pci_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) { dma_free_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, vaddr, dma_handle); } static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction) { return dma_map_single(hwdev == NULL ? NULL : &hwdev->dev, ptr, size, (enum dma_data_direction)direction); } static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, size_t size, int direction) { dma_unmap_single(hwdev == NULL ? NULL : &hwdev->dev, dma_addr, size, (enum dma_data_direction)direction); } static inline dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page, unsigned long offset, size_t size, int direction) { return dma_map_page(hwdev == NULL ? NULL : &hwdev->dev, page, offset, size, (enum dma_data_direction)direction); } static inline void pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address, size_t size, int direction) { dma_unmap_page(hwdev == NULL ? NULL : &hwdev->dev, dma_address, size, (enum dma_data_direction)direction); } static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction) { return dma_map_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction); } static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction) { dma_unmap_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction); } static inline void pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction) { dma_sync_single_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); } static inline void pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction) { dma_sync_single_for_device(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction); } static inline void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction) { dma_sync_sg_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction); } static inline void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction) { dma_sync_sg_for_device(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction); } static inline int pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr) { return dma_mapping_error(&pdev->dev, dma_addr); } #ifdef CONFIG_PCI static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return dma_set_mask(&dev->dev, mask); } static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) { return dma_set_coherent_mask(&dev->dev, mask); } static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size) { return dma_set_max_seg_size(&dev->dev, size); } static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask) { return dma_set_seg_boundary(&dev->dev, mask); } #else static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; } static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; } static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size) { return -EIO; } static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask) { return -EIO; } #endif #endif