diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:33 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:04 +1100 |
| commit | 4a605e2d1a69f5aea06da10d81e22802a90812a3 (patch) | |
| tree | 0119bd40384c06329c52e3fadd6fe11a335cb3e6 /arch/powerpc/include/asm/iommu.h | |
| parent | 0617fc0ca412b535c0ab0e5e7b03180067f0f7fd (diff) | |
powerpc/dma: trim the fat from <asm/dma-mapping.h>
There is no need to provide anything but get_arch_dma_ops to
<linux/dma-mapping.h>. More the remaining declarations to <asm/iommu.h>
and drop all the includes.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/iommu.h')
| -rw-r--r-- | arch/powerpc/include/asm/iommu.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index 6f00a892ebdf..0ac52392ed99 100644 --- a/arch/powerpc/include/asm/iommu.h +++ b/arch/powerpc/include/asm/iommu.h @@ -325,5 +325,15 @@ extern bool iommu_fixed_is_weak; #define iommu_fixed_is_weak false #endif +extern const struct dma_map_ops dma_iommu_ops; + +static inline unsigned long device_to_mask(struct device *dev) +{ + if (dev->dma_mask && *dev->dma_mask) + return *dev->dma_mask; + /* Assume devices without mask can take 32 bit addresses */ + return 0xfffffffful; +} + #endif /* __KERNEL__ */ #endif /* _ASM_IOMMU_H */ |