Re: [Qemu-devel] Re: Qemu/KVM ehci support

[Max Krasnyansky <maxk@kernel.org>]

Mark Burkley wrote:
> On Thu, 11 Dec 2008 10:52:10 -0800, you wrote:
> 
>> Hi Mark,
>>
>> Mark Burkley wrote:
>>> On Mon, 24 Nov 2008 17:21:35 -0800, MaxK wrote:
>>>> Mark, I'm planning on playing with it some more later today. If you have 
>>>> an updated version please send me a patch or a GIT tree to pull from.
>>>> My first attempt as you remember was not very successful (ie XP was just 
>>>> crashing).
>>> I never did find out why that was happening but I will update the
>>> patch against trunk and retest today to see if I can duplicate the
>>> problem.
>> Do you have an updated patch ?
> 
> I got tangled up trying to install git and get a hole poked in the
> firewall then had to go firefighting.  Apologies again, I'll try to
> follow up on the status tomorrow.  git port should be open on our
> server but I will have to check.
Sounds good.

>> btw I noticed a FIXME in the code that said that host device handoff is 
>> not supported yet (or something along those lines). Does that mean that 
>> we cannot yet use Linux host devices with EHCI ?
>> Also how did you test EHCI in general ? 'info ehci' monitor command is 
>> commented out and if I try to un-comment/call it qemu dies.
> 
> That's probably why it is commented out - I didn't get around to
> merging the info command.
> 
> I tested primarily using mass storage devices.  It used to work with
> mice and printers too but I haven't tested those lately.  Basically
> any device that uses bulk and/or interrupt but not isochronous should
> work.
 >
> The handoff refers to the handoff from EHCI to UHCI if a device is
> USB1.1.  At the moment EHCI handles all devices whether they are 1.1
> or 2.0 though this isn't actually an issue due to backward
> compatibility.
Got it. As soon as you send an update I'll give it a shoot again with 
the devices I have.

Thanx
Max