diff options
Diffstat (limited to 'arch/mips/include/asm/mach-ip27/dma-coherence.h')
| -rw-r--r-- | arch/mips/include/asm/mach-ip27/dma-coherence.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/arch/mips/include/asm/mach-ip27/dma-coherence.h b/arch/mips/include/asm/mach-ip27/dma-coherence.h index ed7e6222dc1..4ffddfdb506 100644 --- a/arch/mips/include/asm/mach-ip27/dma-coherence.h +++ b/arch/mips/include/asm/mach-ip27/dma-coherence.h @@ -26,22 +26,38 @@ static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, return pa; } -static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) +static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, + struct page *page) { dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page)); return pa; } -static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) +static inline unsigned long plat_dma_addr_to_phys(struct device *dev, + dma_addr_t dma_addr) { return dma_addr & ~(0xffUL << 56); } -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, + size_t size, enum dma_data_direction direction) { } +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 int plat_device_is_coherent(struct device *dev) { return 1; /* IP27 non-cohernet mode is unsupported */ |