diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 3 | ||||
| -rw-r--r-- | arch/x86/include/asm/dma-mapping.h | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 07b412aed38..95ca5603603 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2220,6 +2220,9 @@ config X86_DEV_DMA_OPS bool depends on X86_64 +config X86_DMA_REMAP + bool + source "net/Kconfig" source "drivers/Kconfig" diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h index 09aa473e291..61c0bd25845 100644 --- a/arch/x86/include/asm/dma-mapping.h +++ b/arch/x86/include/asm/dma-mapping.h @@ -62,6 +62,12 @@ extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, gfp_t flag, struct dma_attrs *attrs); +#ifdef CONFIG_X86_DMA_REMAP /* Platform code defines bridge-specific code */ +extern bool dma_capable(struct device *dev, dma_addr_t addr, size_t size); +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); +#else + static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { if (!dev->dma_mask) @@ -79,6 +85,7 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) { return daddr; } +#endif /* CONFIG_X86_DMA_REMAP */ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, |