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Date: Wed, 18 Apr 2012 19:53:39 +0200 From: Martin Mokrejs <mmokrejs@...d.natur.cuni.cz> To: Yinghai Lu <yinghai@...nel.org> CC: linux-pci@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: 3.2.11: PCI Express card cannot be re-detected withing cca 60sec timeframe Yinghai Lu wrote: > On Tue, Apr 17, 2012 at 10:07 AM, Yinghai Lu <yinghai@...nel.org> wrote: >> On Tue, Apr 17, 2012 at 2:34 AM, Martin Mokrejs >> <mmokrejs@...d.natur.cuni.cz> wrote: >>> Yinghai Lu wrote: >>>> On Tue, Apr 17, 2012 at 1:46 AM, Yinghai Lu <yinghai@...nel.org> wrote: >>>>> On Tue, Apr 17, 2012 at 12:27 AM, Martin Mokrejs >>>>> <mmokrejs@...d.natur.cuni.cz> wrote: >>>>>>> >>>>>>> can you send out lspci -vvxxxx -s 00:1c.7 after removing USB 3.0 express card? >>>>>> >>>>>> No, that did not help (tried on 3.4-rc3). First I plugged in the NEC uPD720200 USB3.0 card >>>>>> and unplugged it (card removal not reported :(), saved the lspci output. >>>>>> Then I inserted the FireWire card, unplugged, again saved the lspci output. >>>>>> Finally, saved the dmesg. All three files are attached. >>>>> >>>>> for USB 3.0: >>>>> SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock- >>>>> Changed: MRL- PresDet- LinkState+ >>>> >>>> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ >>>> BWMgmt+ ABWMgmt- >>>> >>>> link still active even that card get removed, that looks like chipset >>>> have problem. >>> >>> Yinghai, >>> so what should I ask Dell for? To fix BIOS of the laptop? What exactly? Or do you think >>> this is a hardware issue with the chipset? >> >> after the expresscard get removed, that root port socket status bits >> still report Data Link Active, and >> the card still present. >> >> Better check with Dell at first, and ask them to talk with intel if >> there is silicon bug with that chipset that report wrong status. >> >> Let me check if i could rebase one my local patch do reset pcie link >> to prove that problem it silicon related. > > Rebase patches about pcie link disable/enable in /sys. please check them at > > git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git > for-pci-test > > PCI, sysfs: merge dev and bus cpuaffinity show handling > PCI, sys: Use is_visable() with boot_vga attribute for pci_dev > PCI, sysfs: Put resource_alignment info pci_bus_attrs array > PCI: Move pcie_link_disable to pcie-link.c > PCI, sysfs: Add pcie attrs for pcie device under pci dev dir. > PCI: Add link_disable in /sysfs for pcie device > > it is based on for-pci-root-bus-hotplug branch > > Or you can just master branch like > git clone git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git > > After you remove USB3 expresscard, you need to > > echo 1 > /sys/devices/pci0000\:00/0000\:00\:1c.7/pcie_link_disable > then > echo 0 > /sys/devices/pci0000\:00/0000\:00\:1c.7/pcie_link_disable So without these two echo commands the is no improvement/fix. [ 686.701306] pciehp 0000:00:1c.7:pcie04: pcie_isr: intr_loc 8 [ 686.701316] pciehp 0000:00:1c.7:pcie04: Presence/Notify input change [ 686.701319] pciehp 0000:00:1c.7:pcie04: Card present on Slot(7) [ 686.701357] pciehp 0000:00:1c.7:pcie04: Surprise Removal [ 686.701390] pciehp 0000:00:1c.7:pcie04: check_link_active: lnk_status = 7011 [ 686.809763] pciehp 0000:00:1c.7:pcie04: pciehp_check_link_status: lnk_status = 7011 [ 686.809864] pci 0000:11:00.0: [1033:0194] type 00 class 0x0c0330 [ 686.809914] pci 0000:11:00.0: reg 10: [mem 0x00000000-0x00001fff 64bit] [ 686.810166] pci 0000:11:00.0: PME# supported from D0 D3hot [ 686.829795] pci 0000:11:00.0: BAR 0: assigned [mem 0xf6c00000-0xf6c01fff 64bit] [ 686.829840] pcieport 0000:00:1c.7: PCI bridge to [bus 11-16] [ 686.829843] pcieport 0000:00:1c.7: bridge window [io 0xc000-0xdfff] [ 686.829848] pcieport 0000:00:1c.7: bridge window [mem 0xf6c00000-0xf7cfffff] [ 686.829852] pcieport 0000:00:1c.7: bridge window [mem 0xf0000000-0xf10fffff 64bit pref] [ 686.829991] xhci_hcd 0000:11:00.0: enabling device (0100 -> 0102) [ 686.830048] xhci_hcd 0000:11:00.0: xHCI Host Controller [ 686.830054] xhci_hcd 0000:11:00.0: new USB bus registered, assigned bus number 5 [ 686.830348] xhci_hcd 0000:11:00.0: irq 19, io mem 0xf6c00000 [ 686.830466] xhci_hcd 0000:11:00.0: irq 54 for MSI/MSI-X [ 686.830473] xhci_hcd 0000:11:00.0: irq 55 for MSI/MSI-X [ 686.830479] xhci_hcd 0000:11:00.0: irq 56 for MSI/MSI-X [ 686.830485] xhci_hcd 0000:11:00.0: irq 57 for MSI/MSI-X [ 686.830492] xhci_hcd 0000:11:00.0: irq 58 for MSI/MSI-X [ 686.830654] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002 [ 686.830656] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 686.830657] usb usb5: Product: xHCI Host Controller [ 686.830658] usb usb5: Manufacturer: Linux 3.4.0-rc3-default xhci_hcd [ 686.830660] usb usb5: SerialNumber: 0000:11:00.0 [ 686.830782] xHCI xhci_add_endpoint called for root hub [ 686.830784] xHCI xhci_check_bandwidth called for root hub [ 686.830807] hub 5-0:1.0: USB hub found [ 686.830819] hub 5-0:1.0: 2 ports detected [ 686.830921] xhci_hcd 0000:11:00.0: xHCI Host Controller [ 686.830925] xhci_hcd 0000:11:00.0: new USB bus registered, assigned bus number 6 [ 686.833581] usb usb6: New USB device found, idVendor=1d6b, idProduct=0003 [ 686.833583] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 686.833585] usb usb6: Product: xHCI Host Controller [ 686.833586] usb usb6: Manufacturer: Linux 3.4.0-rc3-default xhci_hcd [ 686.833587] usb usb6: SerialNumber: 0000:11:00.0 [ 686.833639] xHCI xhci_add_endpoint called for root hub [ 686.833641] xHCI xhci_check_bandwidth called for root hub [ 686.833666] hub 6-0:1.0: USB hub found [ 686.833678] hub 6-0:1.0: 2 ports detected echo 1 > /sys/devices/pci0000\:00/0000\:00\:1c.7/pcie_link_disable [ 716.999938] pcieport 0000:00:1c.7: pcie_link_disable_set: lnk_ctrl = 53 [ 717.024647] pciehp 0000:00:1c.7:pcie04: pcie_isr: intr_loc 8 [ 717.024657] pciehp 0000:00:1c.7:pcie04: Presence/Notify input change [ 717.024665] pciehp 0000:00:1c.7:pcie04: Card not present on Slot(7) [ 717.024723] pciehp 0000:00:1c.7:pcie04: Surprise Removal [ 717.024753] pciehp 0000:00:1c.7:pcie04: Disabling domain:bus:device=0000:11:00 [ 717.024756] pciehp 0000:00:1c.7:pcie04: pciehp_unconfigure_device: domain:bus:dev = 0000:11:00 [ 717.044828] xhci_hcd 0000:11:00.0: remove, state 4 [ 717.044834] usb usb6: USB disconnect, device number 1 [ 717.044877] xHCI xhci_drop_endpoint called for root hub [ 717.044885] xHCI xhci_check_bandwidth called for root hub [ 717.044964] xhci_hcd 0000:11:00.0: Host not halted after 16000 microseconds. [ 717.044967] xhci_hcd 0000:11:00.0: USB bus 6 deregistered [ 717.044971] xhci_hcd 0000:11:00.0: remove, state 4 [ 717.044974] usb usb5: USB disconnect, device number 1 [ 717.045000] xHCI xhci_drop_endpoint called for root hub [ 717.045001] xHCI xhci_check_bandwidth called for root hub [ 717.045053] xhci_hcd 0000:11:00.0: Host not halted after 16000 microseconds. [ 717.045138] xhci_hcd 0000:11:00.0: USB bus 5 deregistered [ 717.045197] pci 0000:11:00.0: freeing pci_dev info echo 0 > /sys/devices/pci0000\:00/0000\:00\:1c.7/pcie_link_disable [ 748.456914] pcieport 0000:00:1c.7: pcie_link_disable_set: lnk_ctrl = 40 Martin -- 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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