LXR linux/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
  12static inline int
  13pci_dma_supported(struct pci_dev *hwdev, u64 mask)
  14{
  15        return dma_supported(hwdev == NULL ? NULL : &hwdev->dev, mask);
  16}
  17
  18static inline void *
  19pci_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
  25static inline void
  26pci_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
  32static inline dma_addr_t
  33pci_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
  38static inline void
  39pci_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
  45static inline dma_addr_t
  46pci_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
  52static inline void
  53pci_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
  59static inline int
  60pci_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
  66static inline void
  67pci_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
  73static inline void
  74pci_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
  80static inline void
  81pci_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
  87static inline void
  88pci_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
  94static inline void
  95pci_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
 101static inline int
 102pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
 103{
 104        return dma_mapping_error(&pdev->dev, dma_addr);
 105}
 106
 107#endif
 108