diff options
author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-07-09 21:04:54 -0400 |
---|---|---|
committer | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-07-28 01:19:19 -0400 |
commit | 99becaca86d184a4433e9fde879ff97303d7669f (patch) | |
tree | 85714c5b4712cfce5025c500545b1735c4f0ce87 /arch/x86/include/asm/dma-mapping.h | |
parent | 02ca646e73f3cb9be69e339841b94edae675e248 (diff) |
x86: add dma_capable() to replace is_buffer_dma_capable()
dma_capable() eventually replaces is_buffer_dma_capable(), which tells
if a memory area is dma-capable or not. The problem of
is_buffer_dma_capable() is that it doesn't take a pointer to struct
device so it doesn't work for POWERPC.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Diffstat (limited to 'arch/x86/include/asm/dma-mapping.h')
-rw-r--r-- | arch/x86/include/asm/dma-mapping.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index 1c3f9435f1c9..adac59c8f69b 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h | |||
@@ -55,6 +55,14 @@ extern int dma_set_mask(struct device *dev, u64 mask); | |||
55 | extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, | 55 | extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, |
56 | dma_addr_t *dma_addr, gfp_t flag); | 56 | dma_addr_t *dma_addr, gfp_t flag); |
57 | 57 | ||
58 | static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) | ||
59 | { | ||
60 | if (!dev->dma_mask) | ||
61 | return 0; | ||
62 | |||
63 | return addr + size <= *dev->dma_mask; | ||
64 | } | ||
65 | |||
58 | static inline void | 66 | static inline void |
59 | dma_cache_sync(struct device *dev, void *vaddr, size_t size, | 67 | dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
60 | enum dma_data_direction dir) | 68 | enum dma_data_direction dir) |