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author | David S. Miller <davem@davemloft.net> | 2009-09-11 20:35:13 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-09-11 20:35:13 -0700 |
commit | cabc5c0f7fa1342049042d6e147db5a73773955b (patch) | |
tree | 2be09ae1777d580c7dfe05d6d5b76e57281ec447 /arch/powerpc/include/asm/dma-mapping.h | |
parent | b73d884756303316ead4cd7dad51236b2a515a1a (diff) | |
parent | 86d710146fb9975f04c505ec78caa43d227c1018 (diff) | |
download | blackbird-obmc-linux-cabc5c0f7fa1342049042d6e147db5a73773955b.tar.gz blackbird-obmc-linux-cabc5c0f7fa1342049042d6e147db5a73773955b.zip |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
arch/sparc/Kconfig
Diffstat (limited to 'arch/powerpc/include/asm/dma-mapping.h')
-rw-r--r-- | arch/powerpc/include/asm/dma-mapping.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index b44aaabdd1a6..0c34371ec49c 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -424,6 +424,29 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) #endif } +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + struct dma_mapping_ops *ops = get_dma_ops(dev); + + if (ops->addr_needs_map && ops->addr_needs_map(dev, addr, size)) + return 0; + + if (!dev->dma_mask) + return 0; + + return addr + size <= *dev->dma_mask; +} + +static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + return paddr + get_dma_direct_offset(dev); +} + +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) +{ + return daddr - get_dma_direct_offset(dev); +} + #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) #ifdef CONFIG_NOT_COHERENT_CACHE |