函数源码

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source File:kernel\dma\coherent.c Create Date:2022-07-27 11:33:34
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static inline dma_addr_t dma_get_device_base(struct device *dev,
                         struct dma_coherent_mem * mem)
{
    if (mem->use_dev_dma_pfn_offset)
        return (mem->pfn_base - dev->dma_pfn_offset) << PAGE_SHIFT;
    else
        return mem->device_base;
}