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Date: Wed, 6 Feb 2013 19:09:08 +0100
From: Richard Weinberger <richard@...ma-star.at>
To: Alex Williamson <alex.williamson@...hat.com>
Cc: David Gstir <david@...ma-star.at>, kvm@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: DMAR faults from unrelated device when vfio is used
Hi,
Am Tue, 05 Feb 2013 13:36:53 -0700
schrieb Alex Williamson <alex.williamson@...hat.com>:
> > Ugh, the infamous and useless error 10. It could be anything.
> > I've got a system with onboard usb3, let me see what windows does
> > with it here first. Thanks,
>
> Well, I've got an Etron USB3 HBA and (un)fortunately it works just
> fine with a Win7 guest. There's really nothing special about USB
> controllers from a PCI device assignment perspective. Have you tried
> the latest upstream qemu bits? Thanks,
USB3 does also not work within a Linux guest.
xhci in debug mode gives a bit more infos.
[ 1.157888] xhci_hcd 0000:00:07.0: xHCI Host Controller
[ 1.157899] xhci_hcd 0000:00:07.0: new USB bus registered, assigned bus number 4
[ 1.157948] xhci_hcd 0000:00:07.0: // Halt the HC
[ 1.157957] xhci_hcd 0000:00:07.0: Resetting HCD
[ 1.157962] xhci_hcd 0000:00:07.0: // Reset the HC
[ 1.158111] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[ 1.158125] xhci_hcd 0000:00:07.0: Wait for controller to be ready for doorbell rings
[ 1.158130] xhci_hcd 0000:00:07.0: Reset complete
[ 1.158133] xhci_hcd 0000:00:07.0: Enabling 64-bit DMA addresses.
[ 1.158135] xhci_hcd 0000:00:07.0: Calling HCD init
[ 1.158136] xhci_hcd 0000:00:07.0: xhci_init
[ 1.158137] xhci_hcd 0000:00:07.0: xHCI doesn't need link TRB QUIRK
[ 1.158640] xhci_hcd 0000:00:07.0: Finished xhci_init
[ 1.158642] xhci_hcd 0000:00:07.0: Called HCD init
[ 1.158698] xhci_hcd 0000:00:07.0: irq 11, io mem 0xfebf4000
[ 1.158699] xhci_hcd 0000:00:07.0: xhci_run
[ 1.159578] xhci_hcd 0000:00:07.0: irq 40 for MSI/MSI-X
[ 1.159697] xhci_hcd 0000:00:07.0: irq 41 for MSI/MSI-X
[ 1.159720] xhci_hcd 0000:00:07.0: irq 42 for MSI/MSI-X
[ 1.159736] xhci_hcd 0000:00:07.0: irq 43 for MSI/MSI-X
[ 1.159752] xhci_hcd 0000:00:07.0: irq 44 for MSI/MSI-X
[ 1.179682] xhci_hcd 0000:00:07.0: Setting event ring polling timer
[ 1.179686] xhci_hcd 0000:00:07.0: Command ring memory map follows:
[ 1.179693] xhci_hcd 0000:00:07.0: ERST memory map follows:
[ 1.179695] xhci_hcd 0000:00:07.0: Event ring:
[ 1.179702] xhci_hcd 0000:00:07.0: ERST deq = 64'h36820400
[ 1.179703] xhci_hcd 0000:00:07.0: // Set the interrupt modulation register
[ 1.179710] xhci_hcd 0000:00:07.0: // Enable interrupts, cmd = 0x4.
[ 1.179715] xhci_hcd 0000:00:07.0: // Enabling event ring interrupter ffffc90000e68620 by writing 0x2 to irq_pending
[ 1.179737] xhci_hcd 0000:00:07.0: Finished xhci_run for USB2 roothub
[ 1.179752] usb usb4: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.179753] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.179755] usb usb4: Product: xHCI Host Controller
[ 1.179756] usb usb4: Manufacturer: Linux 3.8.0-rc6-2.10-desktop xhci_hcd
[ 1.179757] usb usb4: SerialNumber: 0000:00:07.0
[ 1.179967] xHCI xhci_add_endpoint called for root hub
[ 1.179971] xHCI xhci_check_bandwidth called for root hub
[ 1.180081] hub 4-0:1.0: USB hub found
[ 1.180094] hub 4-0:1.0: 2 ports detected
[ 1.180200] xhci_hcd 0000:00:07.0: xHCI Host Controller
[ 1.180206] xhci_hcd 0000:00:07.0: new USB bus registered, assigned bus number 5
[ 1.180214] xhci_hcd 0000:00:07.0: Enabling 64-bit DMA addresses.
[ 1.180219] xhci_hcd 0000:00:07.0: // Turn on HC, cmd = 0x5.
[ 1.245201] xhci_hcd 0000:00:07.0: Host took too long to start, waited 16000 microseconds.
This one looks interesting.
[ 1.245414] xhci_hcd 0000:00:07.0: // Halt the HC
[ 1.245424] xhci_hcd 0000:00:07.0: startup error -19
[ 1.245551] xhci_hcd 0000:00:07.0: USB bus 5 deregistered
[ 1.245556] xhci_hcd 0000:00:07.0: remove, state 1
[ 1.245560] usb usb4: USB disconnect, device number 1
[ 1.245608] xHCI xhci_drop_endpoint called for root hub
[ 1.245609] xHCI xhci_check_bandwidth called for root hub
[ 1.245684] xhci_hcd 0000:00:07.0: // Halt the HC
[ 1.245695] xhci_hcd 0000:00:07.0: // Reset the HC
[ 1.245741] xhci_hcd 0000:00:07.0: Wait for controller to be ready for doorbell rings
[ 1.256413] xhci_hcd 0000:00:07.0: // Disabling event ring interrupts
[ 1.256427] xhci_hcd 0000:00:07.0: cleaning up memory
[ 1.256440] xhci_hcd 0000:00:07.0: xhci_stop completed - status = 1
[ 1.256446] xhci_hcd 0000:00:07.0: USB bus 4 deregistered
[ 1.258194] ata_piix 0000:00:01.1: version 2.13
Within the guest lscpi -vv gives:
00:07.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) (prog-if 30 [XHCI])
Subsystem: Intel Corporation Device 2008
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-
Interrupt: pin A routed to IRQ 11
Region 0: Memory at febf4000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA 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 128 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 Disabled; 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: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
Is there anything else we can do?
Thanks,
//richard
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