diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-07-10 05:04:56 +0400 |
|---|---|---|
| committer | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2009-07-28 09:19:19 +0400 |
| commit | a0b00ca84b3ecb9eebd62ad34880d8cc0d988c8a (patch) | |
| tree | 37f1e3949184d9f8ad1f1332d74cd60bd098e531 /arch/ia64/include/asm/dma-mapping.h | |
| parent | a4c2baa6e148adfb27beaf16b6fb6d465b5b3acb (diff) | |
| download | linux-a0b00ca84b3ecb9eebd62ad34880d8cc0d988c8a.tar.xz | |
ia64: 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/ia64/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/ia64/include/asm/dma-mapping.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h index 5a61b5c2e18f..88d0f860394d 100644 --- a/arch/ia64/include/asm/dma-mapping.h +++ b/arch/ia64/include/asm/dma-mapping.h @@ -69,6 +69,14 @@ dma_set_mask (struct device *dev, u64 mask) return 0; } +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + if (!dev->dma_mask) + return 0; + + return addr + size <= *dev->dma_mask; +} + extern int dma_get_cache_alignment(void); static inline void |