Hi
On 09/11/2014 05:18 PM, Jay Larson wrote:
> Mathias,
>
> I was not able to locate an official method of inquiring about issues with xhci,
> so I'm writing directly to you. If this is not the appropriate method please
> accept my apologies and kindly direct me to the proper place.
>
Me, including the linux usb mailing list (added to cc), is the right combination to ask
questions regarding xhci.
> We have had a failure for which I have been asked to provide an explanation. A
> process that was accessing a USB 3.0 disk unexpectedly failed (Killed). We have
> had other issues where users have had to reboot to restore USB connectivity
> (possibly just reloading the module would have had the same effect). I can only
> surmise that there is either a problem with the hardware, or xhci. I am in
> particular curious if we could expect any significant benefits to using a more
> recent kernel.
>
You should definitely use a more recent kernel, there are tons of changes since 2.6.32,
and It's impossible for me to support old kernels.
> [uname -a]
> Linux kdmlinux3 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64
> x86_64 x86_64 GNU/Linux
>
> [lcpci -vv]
> 04:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev
For example this quirk was added to 3.2 kernel concerning the NEC host:
commit df711fc9962b9491af2b92bd0d21ecbfefe4e5fa
xHCI: reset-on-resume quirk for NEC uPD720200
Julian Sikorski reports NEC uPD720200 does not work stable after suspend
and resume. Re-initialize the host in xhci_resume().
If you can, please try with a 3.16 or 3.17-rc kernel and see if the issue still exists.
-Mathias
(leaving rest of message here for reference for linux-usb readers)
> 04) (prog-if 30 [XHCI])
> Physical Slot: 0-1
> 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 fe9fe000 (64-bit, non-prefetchable) [size=8K]
> Capabilities: [50] Power Management version 3
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
> PME(D0+,D1-,D2-,D3hot+,D3cold-)
> Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+
> Address: 0000000000000000 Data: 0000
> Capabilities: [90] MSI-X: Enable+ Count=8 Masked-
> Vector table: BAR=0 offset=00001000
> PBA: BAR=0 offset=00001080
> Capabilities: [a0] Express (v2) Endpoint, MSI 00
> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
> unlimited, L1 unlimited
> ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
> RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
> MaxPayload 128 bytes, MaxReadReq 512 bytes
> DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
> LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0
> <4us, L1 unlimited
> ClockPM+ Surprise- LLActRep- BwNot-
> LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain-
> CommClk+
> ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+
> DLActive- BWMgmt- ABWMgmt-
> DevCap2: Completion Timeout: Not Supported, TimeoutDis+
> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
> LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-,
> Selectable De-emphasis: -6dB
> Transmit Margin: Normal Operating Range,
> EnterModifiedCompliance- ComplianceSOS-
> Compliance De-emphasis: -6dB
> LnkSta2: Current De-emphasis Level: -3.5dB
> Capabilities: [100] Advanced Error Reporting
> 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+
> CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
> AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
> Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff
> Capabilities: [150] Latency Tolerance Reporting
> Max snoop latency: 0ns
> Max no snoop latency: 0ns
> Kernel driver in use: xhci_hcd
> Kernel modules: xhci-hcd
>
> [dmesg]
> xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep
> ffff88006e7a6ec0
> xhci_hcd 0000:04:00.0: xHCI xhci_drop_endpoint called with disabled ep
> ffff88006e7a6f08
> xhci_hcd 0000:04:00.0: ERROR: unexpected command completion code 0x0.
> usb 13-2: new SuperSpeed USB device number 18 using xhci_hcd
> usb 13-2: New USB device found, idVendor=1058, idProduct=1140
> usb 13-2: New USB device strings: Mfr=1, Product=2, SerialNumber=5
> usb 13-2: Product: My Book 1140
> usb 13-2: Manufacturer: Western Digital
> usb 13-2: SerialNumber: 504C313332314C414733595A5248
> usb 13-2: configuration #1 chosen from 1 choice
> scsi26 : SCSI emulation for USB Mass Storage devices
> usb-storage: device found at 18
> usb-storage: waiting for device to settle before scanning
> usb-storage: device scan complete
> usb 13-2: reset SuperSpeed USB device number 18 using xhci_hcd
> xhci_hcd 0000:04:00.0: xHCI host not responding to stop endpoint command.
> xhci_hcd 0000:04:00.0: Assuming host is dying, halting host.
> xhci_hcd 0000:04:00.0: Non-responsive xHCI host is not halting.
> xhci_hcd 0000:04:00.0: Completing active URBs anyway.
> xhci_hcd 0000:04:00.0: HC died; cleaning up
>
> I would be appreciative of any insight you might have.
>
> Thanks
>
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