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b6e05477c1
Give the basic phys_to_dma() and dma_to_phys() helpers a __-prefix and add the memory encryption mask to the non-prefixed versions. Use the __-prefixed versions directly instead of clearing the mask again in various places. Tested-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Joerg Roedel <joro@8bytes.org> Cc: Jon Mason <jdmason@kudzu.us> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Muli Ben-Yehuda <mulix@mulix.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20180319103826.12853-13-hch@lst.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
29 lines
713 B
C
29 lines
713 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef ASM_POWERPC_DMA_DIRECT_H
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#define ASM_POWERPC_DMA_DIRECT_H 1
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static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
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{
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#ifdef CONFIG_SWIOTLB
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struct dev_archdata *sd = &dev->archdata;
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if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr)
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return false;
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#endif
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if (!dev->dma_mask)
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return false;
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return addr + size - 1 <= *dev->dma_mask;
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}
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static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
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{
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return paddr + get_dma_offset(dev);
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}
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static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
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{
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return daddr - get_dma_offset(dev);
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}
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#endif /* ASM_POWERPC_DMA_DIRECT_H */
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