dma_map_single+iommu

2025-04-16 03:48:24

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dma-mapping: move dma_map_(un)single() to <linux/dma-mapping...

* support iommu at the driver level, so it also matches to the DMA address. * Hence, this helper currently just performs the cache operation, then returns * straight-mapped dma_address, which is intended to be set to the register of * the DMA device. * * @vaddr: address of the buff...
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dma-mapping: move dma_map_(un)single() to <linux/dma-mapping...

* support iommu at the driver level, so it also matches to the DMA address. * Hence, this helper currently just performs the cache operation, then returns * straight-mapped dma_address, which is intended to be set to the register of * the DMA device. * * @vaddr: address of the buff...
我可以使用dma_map_single()返回的地址在DeviceB上调用DeviceA吗...

其中，DeviceC和DeviceD之间链路Cost是100，其他链路的Cost均为10。当前从DeviceA到DeviceF的最优路径是...