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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2009-07-10 10:04:56 +0900
committerFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2009-07-28 14:19:19 +0900
commita0b00ca84b3ecb9eebd62ad34880d8cc0d988c8a (patch)
tree37f1e3949184d9f8ad1f1332d74cd60bd098e531 /arch/ia64
parenta4c2baa6e148adfb27beaf16b6fb6d465b5b3acb (diff)
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')
-rw-r--r--arch/ia64/include/asm/dma-mapping.h8
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 5a61b5c2e18..88d0f860394 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