[Qemu-devel] EHCI (usb 2.0) support

[Max Krasnyansky]

With my latest USB patches, that I just sent out, UHCI support is probably as
good as it gets. I tested all kinds of devices with Linux and XP guests and
things are solid.
Host USB is now fully async and I do not see any delays/jerkiness anymore.

However, overall performance can certainly be improved by supporting EHCI (ie
usb-2.0 stuff). For example native performance of an external USB hard drive
is ~28MB/sec (measured with hdparm). The same drive attached to the Linux
guest gives me about 500KB/sec. Huge difference.
So I'm going to start working on EHCI (starting tomorrow). If somebody has any
EHCI code I can use let me know.

Max