Re: USB 3.0 xhci questions

[Ryo ONODERA <ryo_on%yk.rim.or.jp@localhost>]

Hi,

From: Ryo ONODERA <ryo_on%yk.rim.or.jp@localhost>, Date: Wed, 13 Aug 2014 
00:57:39 +0900 (JST)

> From: Takahiro HAYASHI <t.hash425%gmail.com@localhost>, Date: Tue, 12 Aug 
> 2014 21:49:35 +0900
> 
>> On 08/12/14 20:37, Ryo ONODERA wrote:
>>> From: Takahiro HAYASHI <t.hash425%gmail.com@localhost>, Date: Tue, 12 Aug 
>>> 2014
>>> 02:14:43 +0900
>> [snip]
>>>> I have some questions.
>>>>
>>>> 1) Do you have PCI_INTR_FIXUP in your kernel config?
>>>
>>> I had no PCI_INTR_FIXUP in kernel config.
>>> I have added PCI_INTR_FIXUP to my kernel config, and no effects.
>> 
>> hmm..
>> 
>>>> 2) Is the port enabled -- has XHCI_PS_PED in PORTSC?
>>>
>>> All PORTSC is 0x2a0.
>>> It means port is disabled?
>> 
>> Yes, disabled.
>> 
>> xHCI 1.1 section 5.4.8 PORTSC reg says 0x2a0 means
>> XHCI_PS_CCS = 0: device is not connected
>> XHCI_PS_PED = 0: port disabled
>> XHCI_PS_PLS = 0x5: Link is in the RxDetect state
>> XHCI_PS_PP = 1: not power-off state
>> 
>> RxDetect is the state after port warm reset.
>> In this state controller is waiting for device.
>> 
>> 
>> - xHCI specification 1.1
>> http://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/extensible-host-controler-interface-usb-xhci.pdf
> 
> Hi,
> 
> Thanks for your explanation.
> I read xhci spec already.
> But I cannot find missing something for Intel xhci device...

I have found the missing one, and post to my PR.
http://gnats.netbsd.org/49076

It works for Lynx Point xhci,
but does not work fine for Lynx Point-LP xhci.

If you have Lynx Point-LP machine, could you test my patch in
PR kern/49076?
My Lynx Point-LP machine is MacBook Air early 2014 11-inch.
I would like to know the status on non-Apple Lynx Point-LP machine especially.

Thank you.

--
Ryo ONODERA // ryo_on%yk.rim.or.jp@localhost
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