Re: [Qemu-devel] [PATCH] EHCI support - device recognized, but no data

[Jan Kiszka]

David S. Ahern wrote:
> On 03/07/2010 04:32 AM, Jan Kiszka wrote:
>> Kevin Wolf wrote:
>>> Am Freitag, 5. März 2010 04:17 schrieb David S. Ahern:
>>>> Jan:
>>>>
>>>> I spent some more time on the EHCI support today. With the attached
>>>> patch (delta to the patch from yesterday) a USB key is recognized within
>>>> the guest (FC-12):
>>> Looks very nice. Actually I could access the file system on my USB stick. I 
>>> have pushed your patch along with some additional minor changes to 
>>> git://repo.or.cz/qemu/kevin.git ehci. Jan, you might want to pull from 
>>> there.
>>>
>> Merged, thanks.
>>
>> Meanwhile I played with some more devices, and I think I found one
>> scenario that should be handy to debug: -usbdevice net. Apparently, it
>> does not work yet, my console is just flooded with
>>
>>>>>>> ASYNC STATE MACHINE execute
>> 000.005 exec: ctr is 1
>> 000.004 exec: frindex is 488,3
>> 000.004 setting qh.current from 0E0B21E0 to 0x0E0B21E0
>> 000.005 Active non-interrupt QH, executing
>> 000.003 pid is  1
>> 000.00000.222 periodic state adv fr=490.  [0E0B37A8] -> 00000001
>> 000.009 periodic state adv fr=490.  [0E0B37A8] -> 00000001
>> 000.009
>>
>>>>>>> ASYNC STATE MACHINE execute
>> 000.006 exec: ctr is 1
>> 000.003 exec: frindex is 490,2
>> 000.005 setting qh.current from 0E0B21E0 to 0x0E0B21E0
>> 000.004 Active non-interrupt QH, executing
>> 000.004 pid is  1
>> 000.004 calling dev->info->handle_packet
>> 000.004 exit loop dev->info->handle_packet
>> 000.003 Enter EXECUTING
>> 000.004 USBTRAN RSP NAK, returning without clear active
>> 000.004 finishing exec
>> 000.004 Nak occured and RL != 0, dec NakCnt to -1
>> 000.004 write QH to VM memory
>> 000.203 periodic state adv fr=490.  [0E0B37A8] -> 00000001
>> 000.008 periodic state adv fr=490.  [0E0B37A8] -> 00000001
>> 000.009
>>
>> Messages. The guest reports that it received one Ethernet packet, but
>> that's all, dhcpcd fails with a timeout. Already "ifconfig ethX up"
>> starts this flooding.
>>
>> Jan
>>
> 
> What guest OS were you successful with for storage devices - windows or
> linux, 32-bit or 64? I've been mainly using FC-12, x86_64 as the guest
> OS, and an external (ie., physical) key of recent vintage. Qemu's msd
> device does not work with FC-12 (and UHCI).

I was using an OpenSuse 11.1 guest image with 2.6.27 kernel. Host and
guest were 64 bit.

> 
> I played around with Qemu's usb-net device a bit, but not sure I am
> configuring it correctly (using monitor commands to attach).

"-usbdevice net -net user" should switch completely to USB based
networking and make the guest issue dchp request over that NIC. Works
like that for me with UHCI, fails with EHCI.

Jan

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