tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_DMA_MAPPING_H
2#define _ASM_DMA_MAPPING_H
3
4#include <linux/scatterlist.h>
5#include <asm/dma-coherence.h>
6#include <asm/cache.h>
7
8#ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */
9#include <dma-coherence.h>
10#endif
11
12extern const struct dma_map_ops *mips_dma_map_ops;
13
14static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
15{
16 return mips_dma_map_ops;
17}
18
19static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
20{
21 if (!dev->dma_mask)
22 return false;
23
24 return addr + size <= *dev->dma_mask;
25}
26
27static inline void dma_mark_clean(void *addr, size_t size) {}
28
29extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
30 enum dma_data_direction direction);
31
32#define arch_setup_dma_ops arch_setup_dma_ops
33static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
34 u64 size, const struct iommu_ops *iommu,
35 bool coherent)
36{
37#ifdef CONFIG_DMA_PERDEV_COHERENT
38 dev->archdata.dma_coherent = coherent;
39#endif
40}
41
42#endif /* _ASM_DMA_MAPPING_H */