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Date: Wed, 06 Feb 2013 11:47:20 -0700 From: Alex Williamson <alex.williamson@...hat.com> To: Richard Weinberger <richard@...ma-star.at> 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 On Wed, 2013-02-06 at 19:09 +0100, Richard Weinberger wrote: > 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. Does the card work with pci-assign or are both broken? > > [ 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. Yep, the register never got to the state it was looking for. > [ 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 Possible there's a bug in how we're managing the vector table and pba here. Can you get to the monitor and run 'into mtree' and provide the results? Thanks, Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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