linux-4.4.1/dma_capable()(arm64)

参照元†

linux-4.4.1/dma_capable()

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説明†

パス: linux-4.4.1/arch/arm64/include/asm/dma-mapping.h

FIXME: これは何？
- 説明

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引数†

struct device *dev
- linux-4.4.1/device
dma_addr_t addr
- linux-4.4.1/dma_addr_t
size_t size

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返り値†

bool

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参考†

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実装†

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;
}

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コメント†

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katsuhiro

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