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 */ 7 enum 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