mirror of
https://git.proxmox.com/git/qemu
synced 2025-10-24 10:42:53 +00:00
e2f89926f1
The USB UHCI and EHCI drivers were converted some time ago to use the pci_dma_*() helper functions. However, this conversion was not complete because in some places both these drivers do DMA via the usb_packet_map() function in usb-libhw.c. That function directly used cpu_physical_memory_map(). Now that the sglist code uses DMA wrappers properly, we can convert the functions in usb-libhw.c, thus conpleting the conversion of UHCI and EHCI to use the DMA wrappers. Note that usb_packet_map() invokes dma_memory_map() with a NULL invalidate callback function. When IOMMU support is added, this will mean that usb_packet_map() and the corresponding usb_packet_unmap() must be called in close proximity without dropping the qemu device lock - otherwise the guest might invalidate IOMMU mappings while they are still in use by the device code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> |
||
|---|---|---|
| .. | ||
| bus.c | ||
| core.c | ||
| desc.c | ||
| desc.h | ||
| dev-audio.c | ||
| dev-bluetooth.c | ||
| dev-hid.c | ||
| dev-hub.c | ||
| dev-network.c | ||
| dev-serial.c | ||
| dev-smartcard-reader.c | ||
| dev-storage.c | ||
| dev-wacom.c | ||
| hcd-ehci.c | ||
| hcd-musb.c | ||
| hcd-ohci.c | ||
| hcd-uhci.c | ||
| hcd-xhci.c | ||
| host-bsd.c | ||
| host-linux.c | ||
| host-stub.c | ||
| libhw.c | ||
| Makefile.objs | ||
| redirect.c | ||