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Date:      Tue, 04 Nov 2014 20:22:14 +0000
From:      Steven Hartland <steven@multiplay.co.uk>
To:        Hans Petter Selasky <hps@selasky.org>,  "freebsd-usb@freebsd.org" <freebsd-usb@freebsd.org>
Subject:   Re: ehci breaking Supermicro IPMI keyboard on uhci?
Message-ID:  <54593576.9050100@multiplay.co.uk>
In-Reply-To: <54591009.5020401@multiplay.co.uk>
References:  <5458184E.5020801@multiplay.co.uk> <54587E9B.50709@selasky.org> <54590195.7090600@multiplay.co.uk> <545902B4.8030001@selasky.org> <54591009.5020401@multiplay.co.uk>

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On 04/11/2014 17:42, Steven Hartland wrote:
>
> On 04/11/2014 16:45, Hans Petter Selasky wrote:
>> On 11/04/14 17:40, Steven Hartland wrote:
>>> On 04/11/2014 07:22, Hans Petter Selasky wrote:
>>>> On 11/04/14 01:05, Steven Hartland wrote:
>>>>> Had the problem where the Supermicro IPMI keyboard wouldn't work 
>>>>> on some
>>>>> machines for a while, tonight I finally had time to play with all the
>>>>> options to see if anything would make it work.
>>>>>
>>>>> Turns out adding the following to loader.conf does fixes the issue:
>>>>> hint.ehci.0.disabled="1"
>>>>>
>>>>> So the question is why would this help?
>>>>>
>>>>> Surely disabling one controller shouldn't make devices attached to
>>>>> another work?
>>>>>
>>>>
>>>> Hi,
>>>>
>>>> The USB device is failing to enumerate. Are you sure there is no XHCI
>>>> controller on this device?
>>> I did try removing xhci from my kernel config, but that had no effect,
>>> only when I disabled the ehci controller did it correctly enumerate the
>>> devices attached to the uhci controller.
>>>
>>> Attached is the outuput from pciconf -l -v in case that helps. If
>>> there's anything else I can provide which will help just let me know.
>>>
>>> For reference I'm currently testing 10.1-RC4 on this box.
>>>
>>>      Regards
>>>      Steve
>>
>> Maybe you can check the PCI IDs with Linux EHCI driver, if your 
>> hardware requires some special quirks?
> I cant find any mention of quirks for the Intel USB controller PCI IDs 
> but I might be looking in the wrong place, do you have a link to what 
> I should be searching though?
>
> I did however find the following which is for the exact device I'm 
> having issues with and seems to indicate the HW might have an issue 
> with HighSpeed mode.
>
> https://lkml.org/lkml/2012/4/19/224
> http://lkml.iu.edu//hypermail/linux/kernel/1204.3/03115.html
>
> Which makes me wonder if hw.usb.ehci.no_hs=1 would also result in a 
> working device.
>
Ok so without the disabled hit but with no_hs=1 the devices still works 
and usbconfig list shows:
ugen1.1: <UHCI root HUB Intel> at usbus1, cfg=0 md=HOST spd=FULL 
(12Mbps) pwr=SAVE (0mA)
ugen0.1: <UHCI root HUB Intel> at usbus0, cfg=0 md=HOST spd=FULL 
(12Mbps) pwr=SAVE (0mA)
ugen3.1: <EHCI root HUB Intel> at usbus3, cfg=0 md=HOST spd=HIGH 
(480Mbps) pwr=SAVE (0mA)
ugen2.1: <UHCI root HUB Intel> at usbus2, cfg=0 md=HOST spd=FULL 
(12Mbps) pwr=SAVE (0mA)
ugen2.2: <Multidevice Peppercon AG> at usbus2, cfg=0 md=HOST spd=FULL 
(12Mbps) pwr=ON (100mA)

and messages:
Nov  4 19:28:53 test1 kernel: usbus0 on uhci0
Nov  4 19:28:53 test1 kernel: usbus1 on uhci1
Nov  4 19:28:53 test1 kernel: usbus2 on uhci2
Nov  4 19:28:53 test1 kernel: usbus3: EHCI version 1.0
Nov  4 19:28:53 test1 kernel: usbus3 on ehci0
Nov  4 19:28:53 test1 kernel: usbus0: 12Mbps Full Speed USB v1.0
Nov  4 19:28:53 test1 kernel: usbus1: 12Mbps Full Speed USB v1.0
Nov  4 19:28:53 test1 kernel: usbus2: 12Mbps Full Speed USB v1.0
Nov  4 19:28:53 test1 kernel: usbus3: 480Mbps High Speed USB v2.0
Nov  4 19:28:53 test1 kernel: ugen1.1: <Intel> at usbus1
Nov  4 19:28:53 test1 kernel: uhub0: <Intel UHCI root HUB, class 9/0, 
rev 1.00/1.00, addr 1> on usbus1
Nov  4 19:28:53 test1 kernel: ugen0.1: <Intel> at usbus0
Nov  4 19:28:53 test1 kernel: uhub1: <Intel UHCI root HUB, class 9/0, 
rev 1.00/1.00, addr 1> on usbus0
Nov  4 19:28:53 test1 kernel: ugen3.1: <Intel> at usbus3
Nov  4 19:28:53 test1 kernel: uhub2: <Intel EHCI root HUB, class 9/0, 
rev 2.00/1.00, addr 1> on usbus3
Nov  4 19:28:53 test1 kernel: ugen2.1: <Intel> at usbus2
Nov  4 19:28:53 test1 kernel: uhub3: <Intel UHCI root HUB, class 9/0, 
rev 1.00/1.00, addr 1> on usbus2
Nov  4 19:28:53 test1 kernel: Root mount waiting for: usbus3
Nov  4 19:28:53 test1 kernel: Root mount waiting for: usbus3
Nov  4 19:28:53 test1 kernel: Root mount waiting for: usbus3
Nov  4 19:28:53 test1 kernel: ugen2.2: <Peppercon AG> at usbus2
Nov  4 19:28:53 test1 kernel: ukbd0: <Peppercon AG Multidevice, class 
0/0, rev 2.00/0.01, addr 2> on usbus2

So now I'm even more confused :(

     Regards
     Steve



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