From ea8c64ace86647260ec4255f483e5844d62af2df Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 10 Jan 2018 16:21:13 +0100 Subject: dma-mapping: move swiotlb arch helpers to a new header phys_to_dma, dma_to_phys and dma_capable are helpers published by architecture code for use of swiotlb and xen-swiotlb only. Drivers are not supposed to use these directly, but use the DMA API instead. Move these to a new asm/dma-direct.h helper, included by a linux/dma-direct.h wrapper that provides the default linear mapping unless the architecture wants to override it. In the MIPS case the existing dma-coherent.h is reused for now as untangling it will take a bit of work. Signed-off-by: Christoph Hellwig Acked-by: Robin Murphy --- arch/unicore32/include/asm/dma-mapping.h | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h index ac608c2..5cb250b 100644 --- a/arch/unicore32/include/asm/dma-mapping.h +++ b/arch/unicore32/include/asm/dma-mapping.h @@ -25,24 +25,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) return &swiotlb_dma_map_ops; } -static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) -{ - if (dev && dev->dma_mask) - return addr + size - 1 <= *dev->dma_mask; - - return 1; -} - -static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) -{ - return paddr; -} - -static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) -{ - return daddr; -} - static inline void dma_mark_clean(void *addr, size_t size) {} #endif /* __KERNEL__ */ -- cgit v1.1