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  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 void *
  10. pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
  11.                      dma_addr_t *dma_handle)
  12. {
  13.         return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC);
  14. }
  15.  
  16. static inline void *
  17. pci_zalloc_consistent(struct pci_dev *hwdev, size_t size,
  18.                       dma_addr_t *dma_handle)
  19. {
  20.         return dma_zalloc_coherent(hwdev == NULL ? NULL : &hwdev->dev,
  21.                                    size, dma_handle, GFP_ATOMIC);
  22. }
  23.  
  24. static inline void
  25. pci_free_consistent(struct pci_dev *hwdev, size_t size,
  26.                     void *vaddr, dma_addr_t dma_handle)
  27. {
  28.         dma_free_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, vaddr, dma_handle);
  29. }
  30.  
  31. static inline dma_addr_t
  32. pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
  33. {
  34.         return dma_map_single(hwdev == NULL ? NULL : &hwdev->dev, ptr, size, (enum dma_data_direction)direction);
  35. }
  36.  
  37. static inline void
  38. pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
  39.                  size_t size, int direction)
  40. {
  41.         dma_unmap_single(hwdev == NULL ? NULL : &hwdev->dev, dma_addr, size, (enum dma_data_direction)direction);
  42. }
  43.  
  44. static inline dma_addr_t
  45. pci_map_page(struct pci_dev *hwdev, struct page *page,
  46.              unsigned long offset, size_t size, int direction)
  47. {
  48.     return (dma_addr_t)( (offset)+page_to_phys(page));
  49. }
  50.  
  51. static inline void
  52. pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
  53.                size_t size, int direction)
  54. {
  55.  
  56. }
  57. #define pci_map_page(dev, page, offset, size, direction) \
  58.         (dma_addr_t)( (offset)+page_to_phys(page))
  59.  
  60. #define pci_unmap_page(dev, dma_address, size, direction)
  61.  
  62. static inline int
  63. pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
  64.            int nents, int direction)
  65. {
  66.         return dma_map_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction);
  67. }
  68.  
  69. static inline void
  70. pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
  71.              int nents, int direction)
  72. {
  73.         dma_unmap_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction);
  74. }
  75.  
  76. static inline void
  77. pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle,
  78.                     size_t size, int direction)
  79. {
  80.         dma_sync_single_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
  81. }
  82.  
  83. static inline void
  84. pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
  85.                     size_t size, int direction)
  86. {
  87.         dma_sync_single_for_device(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
  88. }
  89.  
  90. static inline void
  91. pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg,
  92.                 int nelems, int direction)
  93. {
  94.         dma_sync_sg_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
  95. }
  96.  
  97. static inline void
  98. pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
  99.                 int nelems, int direction)
  100. {
  101.         dma_sync_sg_for_device(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
  102. }
  103.  
  104. static inline int
  105. pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
  106. {
  107.         return dma_mapping_error(&pdev->dev, dma_addr);
  108. }
  109.  
  110. #ifdef CONFIG_PCI
  111. static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
  112. {
  113.     return 0;
  114. }
  115.  
  116. static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
  117. {
  118.     return 0;
  119. }
  120. #endif
  121.  
  122. #endif
  123.