On Thu, 1 Mar 2007, Antti P Miettinen wrote:
> >> Does anyone have tools/scripts for decoding the usbmon logs?
> >
> > You don't really need them all that much, as long as you do not
> > try to decode the data. Just look at the usbmon.txt, and follow
> > from there word by word, left to right.
>
> Well - I would mostly just like to educate myself. E.g. having
> something that would tell me that this:
>
> f7723ac0 30344798 S Ci:001:00 s a3 00 0000 0001 0004 4 <
> f7723ac0 30344798 C Ci:001:00 0 4 = 01050000
>
> is a port status query to the hub would help me a lot in understanding
> what is going on :-)
Maybe the attached document will help a little bit. It's something I put
together to help myself decode usbmon logs. It contains information on
the most common control requests from chapter 9 (all devices), chapter 11
(hubs), and the HID spec.
Alan Stern
Standard device requests
RQtype Req Value Index Length
----------------------------------------------
0 1 dev-feat 0 0 Clear device feature
0 3 dev-feat 0 0 Set device feature
0 5 address 0 0 Set device address
0 9 config-value 0 0 Set configuration
1 b altsetting intf 0 Set interface
1 1 intf-feat intf 0 Clear interface feature
1 3 intf-feat intf 0 Set interface feature
2 1 ep-feat ep 0 Clear endpoint feature
2 3 ep-feat ep 0 Set endpoint feature
80 0 0 0 2 Get device status
80 6 descr-type/ 0/ len Get descriptor
index lang-ID
80 8 0 0 1 Get configuration
81 0 0 intf 2 Get interface status
81 a 0 intf 1 Get interface (altsetting)
82 0 0 ep 2 Get endpoint status
Device features: 0 = self-powered, 1 = remote wakeup
Interface features: None
Endpoint features: 0 = halt
Descriptor types: 1 = device, 2 = config, 3 = string, (4 = interface,
5 = endpoint), 6 = device qualifier, 7 = other-speed config
Hub class requests
RQtype Req Value Index Length
----------------------------------------------
20 1 hub-feat 0 0 Clear hub feature
20 3 hub-feat 0 0 Set hub feature
23 1 port-feat sel/ 0 Clear port feature
port
23 3 port-feat sel/ 0 Set port feature
port
a0 0 0 0 4 Get hub status
a0 6 2900 0 len Get hub descriptor
a3 0 0 port 4 Get port status
Hub features: 0 = hub local power, 1 = hub over current,
10 = ch hub local power, 11 = ch hub over current
Port features: 0 = connect, 1 = enable, 2 = suspend, 3 = over current,
4 = reset, 8 = power, 9 = low speed, a = high speed,
b = test mode, c = indicator,
10 = ch connect, 11 = ch enable, 12 = ch suspend,
13 = ch over current, 14 = ch reset
Selector is used for port indicators
HID class requests
RQtype Req Value Index Length
----------------------------------------------
21 9 report-type/ID intf len Set report
21 a duration/ID intf 0 Set idle
21 b proto intf 0 Set protocol
81 6 descr-type/set intf len Get class descriptor
a1 1 report-type/ID intf len Get report
a1 2 0/ID intf 1 Get idle
a1 3 0 intf 1 Get protocol
Report type: 1 = input, 2 = output, 3 = feature
Descriptor type: 21 = HID, 22 = Report, 23 = Physical
Protocol: 0 = boot, 1 = report
-------------------------------------------------------------------------
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