Looks like this is "Windows-only"
I am interested in Linux-only :)
amruth wrote:
Hi
Viral Mehta
If you want detailed trace from hardware level, you can use USB 30
analyzer which is good.
http://www.lecroy.com/tm/products/ProtocolAnalyzers/Voyager/default.asp
The above tool can help you get detailed trace with timings.
Thanks
Amruth p.v
--- On *Mon, 6/15/09, Viral Mehta /<viral.mehta@xxxxxxxxxxxxxx>/* wrote:
From: Viral Mehta <viral.mehta@xxxxxxxxxxxxxx>
Subject: Re: USB 3.0 monitoring
To: "Sarah Sharp" <sarah.a.sharp@xxxxxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx, zaitcev@xxxxxxxxxx
Date: Monday, June 15, 2009, 2:33 AM
Hi Sarah,
Thanks for your kind reply.
I did homework and I think we do NOT need to change anything in
usbmon (drivers/usb/mon/*) code to make it work with USB3.0
By design, usbmon hooks its functions into hcd.c file. So that
hook is in "USB Host Controller Driver framework".
Call sequence would be something like,
USB Class Specific Driver
----> USB core driver
----> USB HCD framework (plugged into core)
|----> Also submit urb to usbmon
|----> enqueue URB to HCD driver or root hub
As evidently, urbs are given to usbmon from a generic layer of
hcds and so it doesnt matter what HCD as a hardware we are using
beneath.
So, I feel like we do not need any code change to usbmon. This
should directly work for USB3.0 capturing.
I needed to go and look at the code beforehand ;)
-- Thanks, Viral Mehta, Embedded Software Engineer, www.einfochips.com
I CCed Pete, too if I missed something and needs some comment here.
Sarah Sharp wrote:
> On Tue, Jun 09, 2009 at 10:42:58AM +0530, Viral Mehta wrote:
>
>> Hi Sarah,
>>
>> I am planning to incorporate code changes in usbmon (USB
monitoring tool that comes with kernel source) to support USB3.0
capturing.
>> I am following all code changes that you recently submitted to
mainline kernel.
>>
>> The unfortunate thing is I do not have any access to any USB3.0
devices.
>> I am just doing it as self-learning exercise since I am very
much into USB3.0
>>
>> Will it be possible for you to help me in anyway to get that
code tested if I happen to submit it to you?
>>
>
> Sure, you should send the code to the linux-usb mailing list as
an RFC,
> and I'll test it with the USB devices I have. I only have bulk and
> control transfers working, so I won't be able to test other transfer
> types. But it would be very useful to have USBMon working for
USB 3.0
> devices.
>
>
>> Or you already have those changes but yet not submitted ? In
that case, I may define some other exercise for myself.
>> Any help would be more than welcome.
>>
>
> No, I haven't made changes to the USBMon for USB 3.0. I haven't
really
> tried using it with USB 3.0 devices, so I don't know if there's any
> changes necessary. But I will certainly test any patches you
send me.
>
> Sarah Sharp
>
>
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