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From: Bjorn Helgaas <bhelgaas@google.com>
Date: Tue, 10 Jul 2012 16:46:15 -0600
Message-ID: <CAErSpo4M=tB_wE_EKifRAb_0qapTh0WUPuqgw=T-OrjsKtO4ag@mail.gmail.com>
Subject: Re: PICe hotplug problems
To: Yinghai Lu <yinghai@kernel.org>
Cc: Joakim Tjernlund <joakim.tjernlund@transmode.se>,
	linux-pci@vger.kernel.org
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On Tue, Jul 10, 2012 at 4:22 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> On Tue, Jul 10, 2012 at 3:20 PM, Bjorn Helgaas <bhelgaas@google.com> wrote:
>> On Tue, Jul 10, 2012 at 4:09 PM, Yinghai Lu <yinghai@kernel.org> wrote:
>>> On Tue, Jul 10, 2012 at 2:42 PM, Joakim Tjernlund
>>> <joakim.tjernlund@transmode.se> wrote:
>>>> yhlu.kernel@gmail.com wrote on 2012/07/10 20:22:09:
>>>>
>>>>>
>>>>> On Tue, Jul 10, 2012 at 10:29 AM, Joakim Tjernlund
>>>>> <joakim.tjernlund@transmode.se> wrote:
>>>>> >
>>>>> > I got an PCIe device that is woken up by user space, clocks needs to configured in various ways before the
>>>>> > device enables its PCIe interface.
>>>>> >
>>>>> > The device is connected to a built in root bridge on a P2010(mpc85xx) CPU.
>>>>> > To enable HP in Linux we need to apply some minor hacks.
>>>>>
>>>>> can you post lspci -vvxxx -s BB:DD:F of the two devices?
>>>>
>>>> Not really, this is an embedded device with limited SW. I got
>>>> busybox and its lspci but that is very limited:
>>>> # > ./busybox lspci -mk
>>>> 00:00.0 "Class 0604" "1957" "0079" "0000" "0000" "pcieport"
>>>> 01:00.0 "Class 0200" "14e4" "b540" "14e4" "b540"
>>>>
>>>> Does that tell you anything?
>>>
>>> No. Can you compile lspci util as static and run it ?
>>
>> You might also be able to get this info as console output by booting
>> with "pci=earlydump".
>
> that is only for x86.
>
> and his setup is with P2010(mpc85xx) CPU.

Ah, yes.  It's regrettable that this arch-independent functionality is
implemented in an arch-specific way.