From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753245Ab2DUI7Y (ORCPT ); Sat, 21 Apr 2012 04:59:24 -0400 Received: from fold.natur.cuni.cz ([195.113.57.32]:37604 "HELO fold.natur.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751277Ab2DUI7W (ORCPT ); Sat, 21 Apr 2012 04:59:22 -0400 Message-ID: <4F927787.409@fold.natur.cuni.cz> Date: Sat, 21 Apr 2012 11:01:59 +0200 From: Martin Mokrejs User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120319 Firefox/11.0 SeaMonkey/2.8 MIME-Version: 1.0 To: Yinghai Lu CC: linux-pci@vger.kernel.org, Linux Kernel Mailing List , Sarah Sharp Subject: Re: 3.2.11: PCI Express card cannot be re-detected withing cca 60sec timeframe References: <4F8F243B.70906@fold.natur.cuni.cz> <4F909CEB.3060407@fold.natur.cuni.cz> <4F91473A.1080007@fold.natur.cuni.cz> <4F919C22.1070608@fold.natur.cuni.cz> <4F919CD5.7070004@fold.natur.cuni.cz> <20120420231748.GB7069@xanatos> In-Reply-To: X-Enigmail-Version: 1.4 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Yinghai Lu wrote: > On Fri, Apr 20, 2012 at 5:09 PM, Yinghai Lu wrote: >>> What do you mean "strange power state"? The only PCI power states the >>> xHCI driver will use is D0 or D3hot. D3hot is entered automatically by >>> the USB core runtime PM system when all USB devices are disconnected or >>> suspended. So what strange power state are we talking about? >> >> that's helpful. Can that feature to be disabled? > > please check and set > /sys/bus/pci/devices/0000:11:00.0/power/control > /sys/bus/pci/devices/0000:11:00.0/usb?/power/control > from auto to on I inserted the card, it was detected: [33335.295737] pci 0000:11:00.0: [1033:0194] type 00 class 0x0c0330 [33335.295789] pci 0000:11:00.0: reg 10: [mem 0x00000000-0x00001fff 64bit] [33335.296043] pci 0000:11:00.0: PME# supported from D0 D3hot [33335.315688] pci 0000:11:00.0: BAR 0: assigned [mem 0xf6c00000-0xf6c01fff 64bit] [33335.315796] xhci_hcd 0000:11:00.0: enabling device (0100 -> 0102) [33335.315893] xhci_hcd 0000:11:00.0: xHCI Host Controller [33335.315897] xhci_hcd 0000:11:00.0: new USB bus registered, assigned bus number 5 [33335.316178] xhci_hcd 0000:11:00.0: irq 19, io mem 0xf6c00000 [33335.316281] xhci_hcd 0000:11:00.0: irq 53 for MSI/MSI-X [33335.316285] xhci_hcd 0000:11:00.0: irq 54 for MSI/MSI-X [33335.316288] xhci_hcd 0000:11:00.0: irq 55 for MSI/MSI-X [33335.316292] xhci_hcd 0000:11:00.0: irq 56 for MSI/MSI-X [33335.316296] xhci_hcd 0000:11:00.0: irq 57 for MSI/MSI-X [33335.316447] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002 [33335.316448] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [33335.316450] usb usb5: Product: xHCI Host Controller [33335.316451] usb usb5: Manufacturer: Linux 3.4.0-rc3-default xhci_hcd [33335.316452] usb usb5: SerialNumber: 0000:11:00.0 [33335.316574] xHCI xhci_add_endpoint called for root hub [33335.316575] xHCI xhci_check_bandwidth called for root hub [33335.316597] hub 5-0:1.0: USB hub found [33335.316609] hub 5-0:1.0: 2 ports detected [33335.316680] xhci_hcd 0000:11:00.0: xHCI Host Controller [33335.316683] xhci_hcd 0000:11:00.0: new USB bus registered, assigned bus number 6 [33335.319424] usb usb6: New USB device found, idVendor=1d6b, idProduct=0003 [33335.319426] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [33335.319428] usb usb6: Product: xHCI Host Controller [33335.319429] usb usb6: Manufacturer: Linux 3.4.0-rc3-default xhci_hcd [33335.319430] usb usb6: SerialNumber: 0000:11:00.0 [33335.319560] xHCI xhci_add_endpoint called for root hub [33335.319562] xHCI xhci_check_bandwidth called for root hub [33335.319584] hub 6-0:1.0: USB hub found [33335.319602] hub 6-0:1.0: 2 ports detected # cat /sys/bus/pci/devices/0000:11:00.0/power/control on # cat /sys/bus/pci/devices/0000:11:00.0/usb?/power/control auto auto # echo on > /sys/bus/pci/devices/0000:11:00.0/usb5/power/control # echo on > /sys/bus/pci/devices/0000:11:00.0/usb6/power/control # I removed the card and it was NOT detected. Note: I did the test with the running instance of kernel booted WITH pcie_aspm=off. Will reboot without tha option and re-try. Martin