include/asm-generic/pci-dma-compat.h

   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
  12 static inline int
  13 pci_dma_supported(struct pci_dev *hwdev, u64 mask)
  14 {
  15         return dma_supported(hwdev == NULL ? NULL : &hwdev->dev, mask);
  16 }
  17
  18 static inline void *
  19 pci_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
  25 static inline void
  26 pci_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
  32 static inline dma_addr_t
  33 pci_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
  38 static inline void
  39 pci_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
  45 static inline dma_addr_t
  46 pci_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
  52 static inline void
  53 pci_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
  59 static inline int
  60 pci_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
  66 static inline void
  67 pci_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
  73 static inline void
  74 pci_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
  80 static inline void
  81 pci_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
  87 static inline void
  88 pci_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
  94 static inline void
  95 pci_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
 101 static inline int
 102 pci_dma_mapping_error(dma_addr_t dma_addr)
 103 {
 104         return dma_mapping_error(dma_addr);
 105 }
 106
 107 #endif