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2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/arch/powerpc/include/asm/dma-direct.h
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..
@@ -2,28 +2,13 @@
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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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+static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
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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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-
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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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-
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-	if (!dev->dma_mask)
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-		return false;
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-
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-	return addr + size - 1 <= *dev->dma_mask;
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+	return paddr + dev->archdata.dma_offset;
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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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+static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
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 {
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-	return paddr + get_dma_offset(dev);
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-}
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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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+	return daddr - dev->archdata.dma_offset;
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 }
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 #endif /* ASM_POWERPC_DMA_DIRECT_H */