diff options
Diffstat (limited to 'arch/mips/include/asm/mach-loongson64/dma-coherence.h')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson64/dma-coherence.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-loongson64/dma-coherence.h b/arch/mips/include/asm/mach-loongson64/dma-coherence.h index 1602a9e9e8c2..b1b575f5c6c1 100644 --- a/arch/mips/include/asm/mach-loongson64/dma-coherence.h +++ b/arch/mips/include/asm/mach-loongson64/dma-coherence.h @@ -17,6 +17,14 @@ struct device; +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + if (!dev->dma_mask) + return false; + + return addr + size - 1 <= *dev->dma_mask; +} + extern dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr); extern phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr); static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, |