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# Date Author Comment
439a97cc 06/14/2011 01:36 pm Gerd Hoffmann

usb-ehci: trace mmio and usbsts

This patch starts adding trace support to ehci. It traces
updates of the status register (USBSTS), mmio access and
controller reset.

It also adds functions to set and clear status register bits
and puts them in use everywhere....
26d53979 06/14/2011 01:36 pm Gerd Hoffmann

usb-ehci: trace state machine changes

Add functions to get and set the current state of the state machine,
add tracepoints there to trace state transitions. Add support for
traceing the queue heads and transfer descriptors as we look at them.

Drop a few DPRINTFs and all DPRINTF_ST lines, they are obsolete now....
dcbd0b5c 06/14/2011 01:36 pm Gerd Hoffmann

usb-ehci: trace port state

Trace usb port operations (attach, detach, reset),
drop a few obsolete DPRINTF's.

No change in behavior.

Signed-off-by: Gerd Hoffmann <>
c4f8e211 06/14/2011 01:36 pm Gerd Hoffmann

usb-ehci: improve mmio tracing

Add a separate tracepoint to log how register values change in response
to a mmio write. Especially useful for registers which have read-only
or clear-on-write bits in them.

No change in behavior.

Signed-off-by: Gerd Hoffmann <>
94527ead 05/26/2011 12:57 pm Gerd Hoffmann

usb: add ehci adapter

This patch finally merges the EHCI host adapter aka USB 2.0 support.

Based on the ehci bits collected @ git://git.kiszka.org/qemu.git ehci

EHCI has a long out-of-tree history. Project was started by Mark
Burkley, with contributions by Niels de Vos. David S. Ahern continued...