LXR linux/include/linux/dma-direction.h

   1#ifndef _LINUX_DMA_DIRECTION_H
   2#define _LINUX_DMA_DIRECTION_H
   3/*
   4 * These definitions mirror those in pci.h, so they can be used
   5 * interchangeably with their PCI_ counterparts.
   6 */
   7enum dma_data_direction {
   8        DMA_BIDIRECTIONAL = 0,
   9        DMA_TO_DEVICE = 1,
  10        DMA_FROM_DEVICE = 2,
  11        DMA_NONE = 3,
  12};
  13#endif
  14