android_kernel_xiaomi_sm8350/include/linux/dma-mapping.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

57 lines
1.2 KiB
C

#ifndef _ASM_LINUX_DMA_MAPPING_H
#define _ASM_LINUX_DMA_MAPPING_H
#include <linux/device.h>
#include <linux/err.h>
/* These definitions mirror those in pci.h, so they can be used
* interchangeably with their PCI_ counterparts */
enum dma_data_direction {
DMA_BIDIRECTIONAL = 0,
DMA_TO_DEVICE = 1,
DMA_FROM_DEVICE = 2,
DMA_NONE = 3,
};
#define DMA_64BIT_MASK 0xffffffffffffffffULL
#define DMA_32BIT_MASK 0x00000000ffffffffULL
#include <asm/dma-mapping.h>
/* Backwards compat, remove in 2.7.x */
#define dma_sync_single dma_sync_single_for_cpu
#define dma_sync_sg dma_sync_sg_for_cpu
extern u64 dma_get_required_mask(struct device *dev);
/* flags for the coherent memory api */
#define DMA_MEMORY_MAP 0x01
#define DMA_MEMORY_IO 0x02
#define DMA_MEMORY_INCLUDES_CHILDREN 0x04
#define DMA_MEMORY_EXCLUSIVE 0x08
#ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
static inline int
dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
dma_addr_t device_addr, size_t size, int flags)
{
return 0;
}
static inline void
dma_release_declared_memory(struct device *dev)
{
}
static inline void *
dma_mark_declared_memory_occupied(struct device *dev,
dma_addr_t device_addr, size_t size)
{
return ERR_PTR(-EBUSY);
}
#endif
#endif