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| author | Ingo Molnar <mingo@elte.hu> | 2008-10-13 10:52:30 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-13 10:52:30 +0200 |
| commit | c493756e2a8a78bcaae30668317890dcfe86e7c3 (patch) | |
| tree | 8fb40782e79472ed882ff2098d4dd295557278ee /include/linux/dma-mapping.h | |
| parent | 0d15504f16f68725e4635aa85411015d1c573b0a (diff) | |
| parent | 4480f15b3306f43bbb0310d461142b4e897ca45b (diff) | |
Merge branch 'linus' into oprofile
Conflicts:
arch/x86/kernel/apic_32.c
include/linux/pci_ids.h
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 952e0f857ac..ba9114ec5d3 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -48,6 +48,11 @@ static inline int is_device_dma_capable(struct device *dev) return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE; } +static inline int is_buffer_dma_capable(u64 mask, dma_addr_t addr, size_t size) +{ + return addr + size <= mask; +} + #ifdef CONFIG_HAS_DMA #include <asm/dma-mapping.h> #else @@ -58,6 +63,13 @@ static inline int is_device_dma_capable(struct device *dev) #define dma_sync_single dma_sync_single_for_cpu #define dma_sync_sg dma_sync_sg_for_cpu +static inline u64 dma_get_mask(struct device *dev) +{ + if (dev && dev->dma_mask && *dev->dma_mask) + return *dev->dma_mask; + return DMA_32BIT_MASK; +} + extern u64 dma_get_required_mask(struct device *dev); static inline unsigned int dma_get_max_seg_size(struct device *dev) |