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ba1efb3d24
An XHCI controller that sits behind an IOMMU needs to map and unmap its memory buffers to do DMA. Implement this by inroducing new xhci_dma_map() and xhci_dma_unmap() helper functions. The xhci_dma_map() function replaces the existing xhci_virt_to_bus() function in the sense that it returns the bus address in the case of simple address translation in the absence of an IOMMU. The xhci_bus_to_virt() function is eliminated by storing the CPU address of the allocated scratchpad memory in struct xhci_ctrl. Signed-off-by: Mark Kettenis <kettenis@openbsd.org> Reviewed-by: Marek Vasut <marex@denx.de> |
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| cdns3 | ||
| common | ||
| dwc3 | ||
| emul | ||
| eth | ||
| gadget | ||
| host | ||
| isp1760 | ||
| mtu3 | ||
| musb | ||
| musb-new | ||
| phy | ||
| ulpi | ||
| Kconfig | ||