Patchwork PCI / ACPI: Always resume devices on ACPI wakeup notifications

login
register
mail settings
Submitter Martin Mokrejs
Date April 19, 2013, 11:49 p.m.
Message ID <5171D7FD.7070609@fold.natur.cuni.cz>
Download mbox | patch
Permalink /patch/238129/
State Not Applicable
Headers show

Comments

Martin Mokrejs - April 19, 2013, 11:49 p.m.
Hi Sarah,
  does anyone has any comments to this thread? I just retried with 3.8.8
kernel and it is still same issue. I can put to 'auto' upstream 1c.4 port,
detach mouse and the 1c.4 does not suspend (due to a recent patch I think
around 3.8.5).
If I set also its downstream 0b:00 to 'auto', plugin mouse ... mouse works,
after I unplug the mouse the 0b:00 goes 'suspended' and XHCI socket dies.

Here is comparison of the 'active' state and of the 'suspended' to death
(note pcie_aspm=off on my kernel command line):
#



Collected data are at http://195.113.57.32/~mmokrejs/tmp/20130420.tar.bz2 (90kB)

Thanks,
Martin


Martin Mokrejs wrote:
> 
> 
> Huang Ying wrote:
>> Hi, Martin,
>>
>> On Wed, 2013-04-03 at 14:16 +0200, Martin Mokrejs wrote:
>>> Meanwhile, the raw data: http://195.113.57.32/~mmokrejs/tmp/20130402.tar.bz2
>>> (size 468641 bytes)
>>
>> Thanks a lot!  Your information is very complete and clear :)
>>
>>> They were collected by:
>>>
>>> # cat ~/bin/collect_runtime_status.sh 
>>> #!/bin/sh
>>> grep . /sys/bus/pci/devices/*/power/runtime_status > runtime_status_"$1".txt
>>> grep . /sys/bus/pci/devices/*/power/control > control_"$1".txt
>>> cat /proc/interrupts > interrupts_"$1".txt
>>> cat /proc/iomem > iomem_"$1".txt
>>> lspci -vvv > lspci_vvv_"$1".txt
>>> dmesg > dmesg_"$1".txt
>>> #
>>>
>>> Just do 'ls -latr' to see the ordering of the files as they were created.
>>> The longer the filename, the later in the test process. The names should be
>>> relatively self-explaining. Definitely, from the log files you should see
>>> what happened in real and therefore, can figure out what the (maybe weird)
>>> long filename really meant.
>>>
>>> Sometimes I manually recorded lsusb of dmesg_final.txt, mostly after I did some
>>> extra tests but but not want to record every step by the above 6 files.
>>>
>>> In one or two places I added some my own notes into COMMENTS file.
>>>
>>>
>>>
>>>
>>> I will try to guide your below where you can study which of the bugs. Mostly,
>>> for each bug you need just one subdirectory to look into, the other are just
>>> repeated the same bug under different kernel version or another patch.
>>> However, Sarah for the xHCI dead port issue will need to compare by diff
>>> two directories, one with the TI-based controller tests, the other with the
>>> NEC-based tests. Especially there, I would do something like:
>>>
>>> cd *TI-based; for f in dmesg*; do cut -c 15- $f > /tmp/TI/$f; done
>>> cd ../*NEC-based; for f in dmesg*; do cut -c 15- $f > /tmp/NEC/$f; done
>>>
>>> Then it should be easier to poke through file captured at the same test step,
>>> like:
>>>
>>> diff -u -w /tmp/TI/dmesg_initial__mouse_attached__unplugged__reattached_but_port_dead.txt \
>>> /tmp/NEC/dmesg_initial__mouse_attached__detached__reattached.txt
>>>
>>>
>>>
>>> Other than that, just diff pairs of files with each other, like:
>>>
>>> diff -u -w lspci_vvv_initial.txt lspci_vvv_initial__mouse_attached.txt
>>>
>>>
>>> Sorry that I sometimes used only a single underscore instead of double underscores
>>> to separate the test steps from each other in the filename.
>>>
>>>
>>> Martin Mokrejs wrote:
>>>> [ +linux-pci and Yinghai as they suffered already those many emails on individual
>>>>  threads so one overviewing email hopefully won't harm] ;-)
>>>>
>>>> Martin Mokrejs wrote:
>>>>>
>>>>>
>>>>> Bjorn Helgaas wrote:
>>>>>> On Tue, Apr 2, 2013 at 9:02 AM, Martin Mokrejs
>>>>>> <mmokrejs@fold.natur.cuni.cz> wrote:
>>>>>>> Hi Ying,
>>>>>>>
>>>>>>> huang ying wrote:
>>>>>>
>>>>>>>> And please give me the full dmesg for boot and incremental dmesg for
>>>>>>>> operations.
>>>>>>>
>>>>>>>
>>>>>>> The incremental bits here, the full dmesg will send only directly to your email, due to its size.
>>>>>>
>>>>>> Is there a bugzilla for this issue?  Please attach the complete dmesg
>>>>>> there or somewhere similar so we can all benefit.
>>>>>
>>>>> I changed my mind. I am attaching the dmesg here but omitting linux-acpi
>>>>> list. After I hear a proposal from Rafel/Bjorn I will open separate bugs.
>>>>> I thought that the threads I started so far were enough but yes, dmesg
>>>>> files don't pass through list filters so I should move that to bugzilla.
>>>>>
>>>>> so far my view of the the bugs was:
>>>>>
>>>>> 1) acpiphp hotplug broken due to upstream pcieport 1c.7 PME# enabled
>>>>>   (eSATA-based card)
>>>>
>>>> Fixed by Ying Huang port_dbg.patch applied over 3.8.5 (fixes acpiphp hotplug
>>>> of eSATA and Firewire cards, NOT the hotplug of a NEC-based USB3 card -> hence
>>>> the bug 4) below). Now I can continue using laptop-mode-tools.
>>>
>>> 20130402/3.8.5-ying_port-dbg__with_laptop-mode-tools_eSATA_testing
>>> 20130402/3.8.3-vanilla__with_laptop-mode-tools (with some comments in
>>>                                                 COMMENTS file)
>>
>> Thanks for your testing!
>>
>>>>> 2) xHCI dead due to to its suspend - 3.8 series and above
>>>>
>>>> Not fixed by port_dbg.patch applied over 3.8.5. Interestingly, a NEC-based
>>>> XHCI card *in an express card slot* does not suffer this suspend issue.
>>>> Although it is being put into suspend if a device is unplugged.
>>>
>>> 20130402/3.8.5-ying_port-dbg__with_laptop-mode-tools_xHCI_test_TI-based
>>> 20130402/3.8.5-ying_port-dbg__with_laptop-mode-tools_xHCI_test_NEC-based
>>>
>>> Same thing but yet without the port_dbg.patch:
>>> 20130402/3.9-rc5__with_2368081__with-latop-mode-tools_xhci_testing/
>>
>> It appears that TI xHCI dead port issue will present even if the PCIe
>> port will never go suspended.  So I think this bug is not related to
>> PCIe port runtime PM but related to USB xHCI.
>>
>> Do you agree Sarah?
> 
> Although I confirmed with 20130405.tar.bz2 dataset what Sarah repeated from our
> past findings in the email which should be just in your your inbox, one thing is
> puzzling:
> When I have powersaving enabled upon bootup with NO USB devices attached to the TI
> controller, effectively while reaching multiuser mode the 0b:00.0 is in a suspend
> state. But, somehow, the very first mouse plugin works. Only the reject causes
> more 'aggressive' suspend.
> As it seems no upstream 1c.4 is messing up here (in the test Sarah wanted me to do
> we have all control files 'on' except the end 0b:00.0) then really still something
> *else* is causing the dead port *in conjunction* with 'suspended' runtime state.
> Please double check what I wrote initially about the 20130402.tar.bz2 dataset.
> Notably, I would compare lspci outputs from a cold boot state with no devices
> attached and suspended 0b:00.0 (the 20130402.tar.bz2 dataset) with the dead port
> status in lspci (find any in 20130402.tar.bz2 or now in 20130405.tar.bz2).
> 
> Martin
> 
>>
>> [snip]
>>
>> Best Regards,
>> Huang Ying
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Martin Mokrejs - April 30, 2013, 8:47 p.m.
Hi,
  would somebody comment please on the seemingly suspended dead xHCI socket behavior?
It is not completely dead, as you could see in step 7, the PME is being changed as a
result of mouse being plugged into the socket. True, the mouse appears dead because
it gets no power but I believe it is because xhci_hcd is fooled. Although I did the testing
with pcie_aspm=off I also tried just now pcie_aspm=native but with same results.

  Either way, the 'suspend to death' is reversible once I force wakeup of the
0b:00 device (the TI host) by echo on > ...0b:00.0/power/control.

Thanks,
Martin

Martin Mokrejs wrote:
> Hi Sarah,
>   does anyone has any comments to this thread? I just retried with 3.8.8
> kernel and it is still same issue. I can put to 'auto' upstream 1c.4 port,
> detach mouse and the 1c.4 does not suspend (due to a recent patch I think
> around 3.8.5).
> If I set also its downstream 0b:00 to 'auto', plugin mouse ... mouse works,
> after I unplug the mouse the 0b:00 goes 'suspended' and XHCI socket dies.
> 
> Here is comparison of the 'active' state and of the 'suspended' to death
> (note pcie_aspm=off on my kernel command line):
> --- lspci_vvv_initial.txt       2013-04-20 00:16:11.000000000 +0200
> +++ lspci_vvv_initial__mouse_attached__detached__attached__1c.4_to_auto__detached__0b:00_to_auto.txt    2013-04-20 00:18:38.000000000 +0200
> @@ -484,15 +484,14 @@
>  
>  0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
>         Subsystem: Dell Device 04b3
> -       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
> +       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
> -       Latency: 0, Cache Line Size: 64 bytes
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
>         Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
>         Capabilities: [40] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> -               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> +               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
>         Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [70] Express (v2) Endpoint, MSI 00
> 
> 
> If I put back 0b:00/control to 'on' I rescue the XHCI socket.
> 
> 
> 
> So, should the TI host be blacklisted so that it is never put into suspend
> state? I wrote already that I don't think it is necessary but looks nobody
> looked into the lspci files. So, here is my interpretation:
> 
> 
> See another test scenario:
> 
> 1. When I bootup without any devices attached to the TI host (no laptop-mode-tools), the TI host at 0b:00 is active.
> 
> 2. If I enable powersaving via setting control file to 'auto' of 1c.4 (just to be sure) and 0b:00,
> the 0b:00 goes after a while suspended. But it is not dead, if I connect a mouse to the XHCI socket
> it would work. BUt look how such 'softly suspended' state looks like:
> 
> # diff -u -w lspci_vvv_initial.txt lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt
> --- lspci_vvv_initial.txt       2013-04-20 01:06:51.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt       2013-04-20 01:08:46.000000000 +0200
> @@ -484,15 +484,14 @@
>  
>  0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
>         Subsystem: Dell Device 04b3
> -       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
> +       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
> -       Latency: 0, Cache Line Size: 64 bytes
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
>         Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
>         Capabilities: [40] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> -               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> +               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
>         Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [70] Express (v2) Endpoint, MSI 00
> #
> 
> 
> 3. Now, look what happens if I plugin a mouse (works, as I said, and uplug it, which triggers a deadly suspend,
> although reversible):
> 
> # diff -u -w lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached.txt
> --- lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt       2013-04-20 01:08:46.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached.txt   2013-04-20 01:10:06.000000000 +0200
> @@ -271,7 +271,7 @@
>                         Changed: MRL- PresDet- LinkState+
>                 RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
>                 RootCap: CRSVisible-
> -               RootSta: PME ReqID 0000, PMEStatus- PMEPending-
> +               RootSta: PME ReqID 0b00, PMEStatus- PMEPending-
>                 DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
>                 DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
>                 LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
> 
> 4. Interestingly, if I connect a mouse to the socket to show it is "dead" there is a tiny change in lspci:
> 
> --- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached.txt   2013-04-20 01:10:06.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt      2013-04-20 01:10:28.000000000 +0200
> @@ -491,7 +491,7 @@
>         Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
>         Capabilities: [40] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> -               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
> +               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME+
>         Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [70] Express (v2) Endpoint, MSI 00
> 
> 
> 5. I said the port 'suspended to death' can be rescued by echo 'on' > .../*0b:00*/control (the mouse was
> plugged in during the echo command so we see not only PME changes but also D3 to D0 change because the
> mouse is attached):
> 
> # diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__rea
> ttached_but_dead__0b\:00_to_on_rescues.txt 
> --- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt      2013-04-20 01:10:28.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues.txt 2013-04-20 01:12:25.000000000 +0200
> @@ -484,14 +484,15 @@
>  
>  0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
>         Subsystem: Dell Device 04b3
> -       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
> +       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
> +       Latency: 0, Cache Line Size: 64 bytes
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
>         Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
>         Capabilities: [40] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> -               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME+
> +               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
>         Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [70] Express (v2) Endpoint, MSI 00
> 
> 
> 
> 6. When I unplug the mouse of course the port does not die because the control file is set to 'on'.
> I already demonstrated that but once again, setting 0b:00 to 'auto':
> 
> # diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto.txt 
> --- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached.txt       2013-04-20 01:13:36.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto.txt        2013-04-20 01:14:41.000000000 +0200
> @@ -484,15 +484,14 @@
>  
>  0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
>         Subsystem: Dell Device 04b3
> -       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
> +       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
> -       Latency: 0, Cache Line Size: 64 bytes
>         Interrupt: pin A routed to IRQ 16
>         Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
>         Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
>         Capabilities: [40] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> -               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> +               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
>         Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [70] Express (v2) Endpoint, MSI 00
> @@ -521,7 +520,7 @@
>                 UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
>                 UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
>                 UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
> -               CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
> +               CESta:  RxErr- BadTLP- BadDLLP+ Rollover- Timeout- NonFatalErr+
>                 CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
>                 AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
>         Capabilities: [150 v1] Device Serial Number 08-00-28-00-00-20-00-00
> 
> 
> 7. Now, a question to the reader: If I attach the mouse, will it work or not?
> 
> 
> # diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto__attached_dead.txt 
> --- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto.txt        2013-04-20 01:14:41.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto__attached_dead.txt 2013-04-20 01:17:59.000000000 +0200
> @@ -491,7 +491,7 @@
>         Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
>         Capabilities: [40] Power Management version 3
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> -               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
> +               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME+
>         Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
>                 Address: 0000000000000000  Data: 0000
>         Capabilities: [70] Express (v2) Endpoint, MSI 00
> #
> 
> 
> No, it did not work. Situation in step 7 is same like in step 4. The diff below is likely benign:
> 
> # diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto__attached_dead.txt 
> --- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt      2013-04-20 01:10:28.000000000 +0200
> +++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto__attached_dead.txt 2013-04-20 01:17:59.000000000 +0200
> @@ -520,7 +520,7 @@
>                 UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
>                 UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
>                 UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
> -               CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
> +               CESta:  RxErr- BadTLP- BadDLLP+ Rollover- Timeout- NonFatalErr+
>                 CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
>                 AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
>         Capabilities: [150 v1] Device Serial Number 08-00-28-00-00-20-00-00
> #
> 
> 
> 
> Collected data are at http://195.113.57.32/~mmokrejs/tmp/20130420.tar.bz2 (90kB)
> 
> Thanks,
> Martin
> 
> 
> Martin Mokrejs wrote:
>>
>>
>> Huang Ying wrote:
>>> Hi, Martin,
>>>
>>> On Wed, 2013-04-03 at 14:16 +0200, Martin Mokrejs wrote:
>>>> Meanwhile, the raw data: http://195.113.57.32/~mmokrejs/tmp/20130402.tar.bz2
>>>> (size 468641 bytes)
>>>
>>> Thanks a lot!  Your information is very complete and clear :)
>>>
>>>> They were collected by:
>>>>
>>>> # cat ~/bin/collect_runtime_status.sh 
>>>> #!/bin/sh
>>>> grep . /sys/bus/pci/devices/*/power/runtime_status > runtime_status_"$1".txt
>>>> grep . /sys/bus/pci/devices/*/power/control > control_"$1".txt
>>>> cat /proc/interrupts > interrupts_"$1".txt
>>>> cat /proc/iomem > iomem_"$1".txt
>>>> lspci -vvv > lspci_vvv_"$1".txt
>>>> dmesg > dmesg_"$1".txt
>>>> #
>>>>
>>>> Just do 'ls -latr' to see the ordering of the files as they were created.
>>>> The longer the filename, the later in the test process. The names should be
>>>> relatively self-explaining. Definitely, from the log files you should see
>>>> what happened in real and therefore, can figure out what the (maybe weird)
>>>> long filename really meant.
>>>>
>>>> Sometimes I manually recorded lsusb of dmesg_final.txt, mostly after I did some
>>>> extra tests but but not want to record every step by the above 6 files.
>>>>
>>>> In one or two places I added some my own notes into COMMENTS file.
>>>>
>>>>
>>>>
>>>>
>>>> I will try to guide your below where you can study which of the bugs. Mostly,
>>>> for each bug you need just one subdirectory to look into, the other are just
>>>> repeated the same bug under different kernel version or another patch.
>>>> However, Sarah for the xHCI dead port issue will need to compare by diff
>>>> two directories, one with the TI-based controller tests, the other with the
>>>> NEC-based tests. Especially there, I would do something like:
>>>>
>>>> cd *TI-based; for f in dmesg*; do cut -c 15- $f > /tmp/TI/$f; done
>>>> cd ../*NEC-based; for f in dmesg*; do cut -c 15- $f > /tmp/NEC/$f; done
>>>>
>>>> Then it should be easier to poke through file captured at the same test step,
>>>> like:
>>>>
>>>> diff -u -w /tmp/TI/dmesg_initial__mouse_attached__unplugged__reattached_but_port_dead.txt \
>>>> /tmp/NEC/dmesg_initial__mouse_attached__detached__reattached.txt
>>>>
>>>>
>>>>
>>>> Other than that, just diff pairs of files with each other, like:
>>>>
>>>> diff -u -w lspci_vvv_initial.txt lspci_vvv_initial__mouse_attached.txt
>>>>
>>>>
>>>> Sorry that I sometimes used only a single underscore instead of double underscores
>>>> to separate the test steps from each other in the filename.
>>>>
>>>>
>>>> Martin Mokrejs wrote:
>>>>> [ +linux-pci and Yinghai as they suffered already those many emails on individual
>>>>>  threads so one overviewing email hopefully won't harm] ;-)
>>>>>
>>>>> Martin Mokrejs wrote:
>>>>>>
>>>>>>
>>>>>> Bjorn Helgaas wrote:
>>>>>>> On Tue, Apr 2, 2013 at 9:02 AM, Martin Mokrejs
>>>>>>> <mmokrejs@fold.natur.cuni.cz> wrote:
>>>>>>>> Hi Ying,
>>>>>>>>
>>>>>>>> huang ying wrote:
>>>>>>>
>>>>>>>>> And please give me the full dmesg for boot and incremental dmesg for
>>>>>>>>> operations.
>>>>>>>>
>>>>>>>>
>>>>>>>> The incremental bits here, the full dmesg will send only directly to your email, due to its size.
>>>>>>>
>>>>>>> Is there a bugzilla for this issue?  Please attach the complete dmesg
>>>>>>> there or somewhere similar so we can all benefit.
>>>>>>
>>>>>> I changed my mind. I am attaching the dmesg here but omitting linux-acpi
>>>>>> list. After I hear a proposal from Rafel/Bjorn I will open separate bugs.
>>>>>> I thought that the threads I started so far were enough but yes, dmesg
>>>>>> files don't pass through list filters so I should move that to bugzilla.
>>>>>>
>>>>>> so far my view of the the bugs was:
>>>>>>
>>>>>> 1) acpiphp hotplug broken due to upstream pcieport 1c.7 PME# enabled
>>>>>>   (eSATA-based card)
>>>>>
>>>>> Fixed by Ying Huang port_dbg.patch applied over 3.8.5 (fixes acpiphp hotplug
>>>>> of eSATA and Firewire cards, NOT the hotplug of a NEC-based USB3 card -> hence
>>>>> the bug 4) below). Now I can continue using laptop-mode-tools.
>>>>
>>>> 20130402/3.8.5-ying_port-dbg__with_laptop-mode-tools_eSATA_testing
>>>> 20130402/3.8.3-vanilla__with_laptop-mode-tools (with some comments in
>>>>                                                 COMMENTS file)
>>>
>>> Thanks for your testing!
>>>
>>>>>> 2) xHCI dead due to to its suspend - 3.8 series and above
>>>>>
>>>>> Not fixed by port_dbg.patch applied over 3.8.5. Interestingly, a NEC-based
>>>>> XHCI card *in an express card slot* does not suffer this suspend issue.
>>>>> Although it is being put into suspend if a device is unplugged.
>>>>
>>>> 20130402/3.8.5-ying_port-dbg__with_laptop-mode-tools_xHCI_test_TI-based
>>>> 20130402/3.8.5-ying_port-dbg__with_laptop-mode-tools_xHCI_test_NEC-based
>>>>
>>>> Same thing but yet without the port_dbg.patch:
>>>> 20130402/3.9-rc5__with_2368081__with-latop-mode-tools_xhci_testing/
>>>
>>> It appears that TI xHCI dead port issue will present even if the PCIe
>>> port will never go suspended.  So I think this bug is not related to
>>> PCIe port runtime PM but related to USB xHCI.
>>>
>>> Do you agree Sarah?
>>
>> Although I confirmed with 20130405.tar.bz2 dataset what Sarah repeated from our
>> past findings in the email which should be just in your your inbox, one thing is
>> puzzling:
>> When I have powersaving enabled upon bootup with NO USB devices attached to the TI
>> controller, effectively while reaching multiuser mode the 0b:00.0 is in a suspend
>> state. But, somehow, the very first mouse plugin works. Only the reject causes
>> more 'aggressive' suspend.
>> As it seems no upstream 1c.4 is messing up here (in the test Sarah wanted me to do
>> we have all control files 'on' except the end 0b:00.0) then really still something
>> *else* is causing the dead port *in conjunction* with 'suspended' runtime state.
>> Please double check what I wrote initially about the 20130402.tar.bz2 dataset.
>> Notably, I would compare lspci outputs from a cold boot state with no devices
>> attached and suspended 0b:00.0 (the 20130402.tar.bz2 dataset) with the dead port
>> status in lspci (find any in 20130402.tar.bz2 or now in 20130405.tar.bz2).
>>
>> Martin
>>
>>>
>>> [snip]
>>>
>>> Best Regards,
>>> Huang Ying
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pci" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch

--- lspci_vvv_initial.txt       2013-04-20 00:16:11.000000000 +0200
+++ lspci_vvv_initial__mouse_attached__detached__attached__1c.4_to_auto__detached__0b:00_to_auto.txt    2013-04-20 00:18:38.000000000 +0200
@@ -484,15 +484,14 @@ 
 
 0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
        Subsystem: Dell Device 04b3
-       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
+       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
-       Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
        Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
-               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
+               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
        Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00


If I put back 0b:00/control to 'on' I rescue the XHCI socket.



So, should the TI host be blacklisted so that it is never put into suspend
state? I wrote already that I don't think it is necessary but looks nobody
looked into the lspci files. So, here is my interpretation:


See another test scenario:

1. When I bootup without any devices attached to the TI host (no laptop-mode-tools), the TI host at 0b:00 is active.

2. If I enable powersaving via setting control file to 'auto' of 1c.4 (just to be sure) and 0b:00,
the 0b:00 goes after a while suspended. But it is not dead, if I connect a mouse to the XHCI socket
it would work. BUt look how such 'softly suspended' state looks like:

# diff -u -w lspci_vvv_initial.txt lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt
--- lspci_vvv_initial.txt       2013-04-20 01:06:51.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt       2013-04-20 01:08:46.000000000 +0200
@@ -484,15 +484,14 @@ 
 
 0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
        Subsystem: Dell Device 04b3
-       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
+       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
-       Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
        Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
-               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
+               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
        Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00
#


3. Now, look what happens if I plugin a mouse (works, as I said, and uplug it, which triggers a deadly suspend,
although reversible):

# diff -u -w lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached.txt
--- lspci_vvv_initial__1c.4_and_0b:00_to_auto.txt       2013-04-20 01:08:46.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached.txt   2013-04-20 01:10:06.000000000 +0200
@@ -271,7 +271,7 @@ 
                        Changed: MRL- PresDet- LinkState+
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
                RootCap: CRSVisible-
-               RootSta: PME ReqID 0000, PMEStatus- PMEPending-
+               RootSta: PME ReqID 0b00, PMEStatus- PMEPending-
                DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-

4. Interestingly, if I connect a mouse to the socket to show it is "dead" there is a tiny change in lspci:

--- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached.txt   2013-04-20 01:10:06.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt      2013-04-20 01:10:28.000000000 +0200
@@ -491,7 +491,7 @@ 
        Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
-               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
+               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME+
        Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00


5. I said the port 'suspended to death' can be rescued by echo 'on' > .../*0b:00*/control (the mouse was
plugged in during the echo command so we see not only PME changes but also D3 to D0 change because the
mouse is attached):

# diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__rea
ttached_but_dead__0b\:00_to_on_rescues.txt 
--- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt      2013-04-20 01:10:28.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues.txt 2013-04-20 01:12:25.000000000 +0200
@@ -484,14 +484,15 @@ 
 
 0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
        Subsystem: Dell Device 04b3
-       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
+       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
+       Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
        Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
-               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME+
+               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00



6. When I unplug the mouse of course the port does not die because the control file is set to 'on'.
I already demonstrated that but once again, setting 0b:00 to 'auto':

# diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto.txt 
--- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached.txt       2013-04-20 01:13:36.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto.txt        2013-04-20 01:14:41.000000000 +0200
@@ -484,15 +484,14 @@ 
 
 0b:00.0 USB controller: Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller (rev 02) (prog-if 30 [XHCI])
        Subsystem: Dell Device 04b3
-       Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
+       Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
-       Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
        Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
-               Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
+               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
        Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00
@@ -521,7 +520,7 @@ 
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
-               CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
+               CESta:  RxErr- BadTLP- BadDLLP+ Rollover- Timeout- NonFatalErr+
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Capabilities: [150 v1] Device Serial Number 08-00-28-00-00-20-00-00


7. Now, a question to the reader: If I attach the mouse, will it work or not?


# diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto__attached_dead.txt 
--- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto.txt        2013-04-20 01:14:41.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto__attached_dead.txt 2013-04-20 01:17:59.000000000 +0200
@@ -491,7 +491,7 @@ 
        Region 2: Memory at f7d10000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=100mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
-               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME-
+               Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME+
        Capabilities: [48] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00
#


No, it did not work. Situation in step 7 is same like in step 4. The diff below is likely benign:

# diff -u -w lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt lspci_vvv_initial__1c.4_and_0b\:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b\:00_to_on_rescues__detached__0b\:00_to_auto__attached_dead.txt 
--- lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead.txt      2013-04-20 01:10:28.000000000 +0200
+++ lspci_vvv_initial__1c.4_and_0b:00_to_auto__mouse_attached_and_works__detached__reattached_but_dead__0b:00_to_on_rescues__detached__0b:00_to_auto__attached_dead.txt 2013-04-20 01:17:59.000000000 +0200
@@ -520,7 +520,7 @@ 
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
-               CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
+               CESta:  RxErr- BadTLP- BadDLLP+ Rollover- Timeout- NonFatalErr+
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Capabilities: [150 v1] Device Serial Number 08-00-28-00-00-20-00-00