Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _LINUX_DMA_MAPPING_H
2#define _LINUX_DMA_MAPPING_H
3
4#ifdef CONFIG_HAS_DMA
5# error Virtio userspace code does not support CONFIG_HAS_DMA
6#endif
7
8#define PCI_DMA_BUS_IS_PHYS 1
9
10enum dma_data_direction {
11 DMA_BIDIRECTIONAL = 0,
12 DMA_TO_DEVICE = 1,
13 DMA_FROM_DEVICE = 2,
14 DMA_NONE = 3,
15};
16
17#endif