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| author | David Daney <ddaney@caviumnetworks.com> | 2008-12-11 15:33:36 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-01-11 09:57:24 +0000 |
| commit | 843aef4930b9953c9ca624a990b201440304b56f (patch) | |
| tree | 9debbaa7d9caa8c73db65ea2674e7ed26e285893 /arch/mips/include/asm/mach-generic/dma-coherence.h | |
| parent | ec454d8c4fee3b2feb87e594d806c0987c5dd538 (diff) | |
| download | kernel_samsung_smdk4412-843aef4930b9953c9ca624a990b201440304b56f.zip kernel_samsung_smdk4412-843aef4930b9953c9ca624a990b201440304b56f.tar.gz kernel_samsung_smdk4412-843aef4930b9953c9ca624a990b201440304b56f.tar.bz2 | |
MIPS: Adjust the dma-common.c platform hooks.
We add a dev parameter to plat_unmap_dma_mem(), and hooks for
plat_dma_supported() and plat_extra_sync_for_device() which should be
nop changes for all existing targets.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/mach-generic/dma-coherence.h')
| -rw-r--r-- | arch/mips/include/asm/mach-generic/dma-coherence.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h index 76e04e7..36c611b 100644 --- a/arch/mips/include/asm/mach-generic/dma-coherence.h +++ b/arch/mips/include/asm/mach-generic/dma-coherence.h @@ -28,10 +28,34 @@ static inline unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) return dma_addr; } -static inline void plat_unmap_dma_mem(dma_addr_t dma_addr) +static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr) { } +static inline int plat_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < DMA_BIT_MASK(24)) + return 0; + + return 1; +} + +static inline void plat_extra_sync_for_device(struct device *dev) +{ + return; +} + +static inline int plat_dma_mapping_error(struct device *dev, + dma_addr_t dma_addr) +{ + return 0; +} + static inline int plat_device_is_coherent(struct device *dev) { #ifdef CONFIG_DMA_COHERENT |