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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.  
  58. static inline int
  59. pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
  60.            int nents, int direction)
  61. {
  62.         return dma_map_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction);
  63. }
  64.  
  65. static inline void
  66. pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
  67.              int nents, int direction)
  68. {
  69.         dma_unmap_sg(hwdev == NULL ? NULL : &hwdev->dev, sg, nents, (enum dma_data_direction)direction);
  70. }
  71.  
  72. static inline void
  73. pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle,
  74.                     size_t size, int direction)
  75. {
  76.         dma_sync_single_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
  77. }
  78.  
  79. static inline void
  80. pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
  81.                     size_t size, int direction)
  82. {
  83.         dma_sync_single_for_device(hwdev == NULL ? NULL : &hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
  84. }
  85.  
  86. static inline void
  87. pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg,
  88.                 int nelems, int direction)
  89. {
  90.         dma_sync_sg_for_cpu(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
  91. }
  92.  
  93. static inline void
  94. pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
  95.                 int nelems, int direction)
  96. {
  97.         dma_sync_sg_for_device(hwdev == NULL ? NULL : &hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
  98. }
  99.  
  100. static inline int
  101. pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
  102. {
  103.         return dma_mapping_error(&pdev->dev, dma_addr);
  104. }
  105.  
  106. #ifdef CONFIG_PCI
  107. static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
  108. {
  109.     return 0;
  110. }
  111.  
  112. static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
  113. {
  114.     return 0;
  115. }
  116. #endif
  117.  
  118. #endif
  119.