release/src-rt-6.x.4708/linux/linux-2.6.36/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 static inline int
  10 pci_dma_supported(struct pci_dev *hwdev, u64 mask)
  11 {
  12         return dma_supported(hwdev == NULL ? NULL : &hwdev->dev, mask);
  13 }
  14
  15 static inline void *
  16 pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
  17                      dma_addr_t *dma_handle)
  18 {
  19         return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC);
  20 }
  21
  22 static inline void
  23 pci_free_consistent(struct pci_dev *hwdev, size_t size,
  24                     void *vaddr, dma_addr_t dma_handle)
  25 {
  26         dma_free_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, vaddr, dma_handle);
  27 }
  28
  29 static inline dma_addr_t
  30 pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
  31 {
  32         return dma_map_single(hwdev == NULL ? NULL : &hwdev->dev, ptr, size, (enum dma_data_direction)direction);
  33 }
  34
  35 static inline void
  36 pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
  37                  size_t size, int direction)
  38 {
  39         dma_unmap_single(hwdev == NULL ? NULL : &hwdev->dev, dma_addr, size, (enum dma_data_direction)direction);
  40 }
  41
  42 static inline dma_addr_t
  43 pci_map_page(struct pci_dev *hwdev, struct page *page,
  44              unsigned long offset, size_t size, int direction)
  45 {
  46         return dma_map_page(hwdev == NULL ? NULL : &hwdev->dev, page, offset, size, (enum dma_data_direction)direction);
  47 }
  48
  49 static inline void
  50 pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
  51                size_t size, int direction)
  52 {
  53         dma_unmap_page(hwdev == NULL ? NULL : &hwdev->dev, dma_address, size, (enum dma_data_direction)direction);
  54 }
  55
  56 static inline int
  57 pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
  58            int nents, int direction)
  59 {
  60         return dma_map_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction);
  61 }
  62
  63 static inline void
  64 pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
  65              int nents, int direction)
  66 {
  67         dma_unmap_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction);
  68 }
  69
  70 static inline void
  71 pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle,
  72                     size_t size, int direction)
  73 {
  74         dma_sync_single_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
  75 }
  76
  77 static inline void
  78 pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
  79                     size_t size, int direction)
  80 {
  81         dma_sync_single_for_device(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
  82 }
  83
  84 static inline void
  85 pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg,
  86                 int nelems, int direction)
  87 {
  88         dma_sync_sg_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
  89 }
  90
  91 static inline void
  92 pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
  93                 int nelems, int direction)
  94 {
  95         dma_sync_sg_for_device(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
  96 }
  97
  98 static inline int
  99 pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
 100 {
 101         return dma_mapping_error(&pdev->dev, dma_addr);
 102 }
 103
 104 #ifdef CONFIG_PCI
 105 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
 106 {
 107         return dma_set_mask(&dev->dev, mask);
 108 }
 109
 110 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
 111 {
 112         return dma_set_coherent_mask(&dev->dev, mask);
 113 }
 114 #endif
 115
 116 #endif