--- Alan Stern <[EMAIL PROTECTED]> wrote:
> On Thu, 28 Oct 2004, N Lin wrote:
> > I'm running kernel 2.6.8.1. I get a lockup whenever I insert a PCMCIA USB2
> > hub card and try to load the uhci_hcd module.
> > uhci_hcd 0000:02:00.0: USBCMD_HCRESET timed out!
>
> Don't recall seeing this error before, but it's definitely a weak spot in
> the UHCI driver. Try the patch below and let me know if it helps. It
> changes the HCRESET timeout into something sane.
Thanks, with this patch, now the UHCI driver doesn't lockup with this card.
So, I'm happy.
However, I'm not sure if there is still a lingering problem here. This PCMCIA
card is a USB2 hub, so I thought I should be able to use both USB2 and USB1
devices over the hub. But I can only use USB2 hi-speed devices (i.e. my USB2
hard drive), not USB1 devices (e.g. my webcam), over this hub. My understanding
of the proper behavior (please correct me if I'm wrong) is that the EHCI driver
would handle the USB2 transfers over this card, but if a USB1 device is connected
to the hub then the EHCI module will pass the handling on to the companion UHCI
driver to do the USB1 stuff.
Since no USB1 devices work when connected to the hub, it seems that EHCI is
trying to pass the handling on to UHCI, but UHCI is doing nothing.
I've appended three diagnostic outputs.
1. The boot-time output when the UHCI driver is loaded. It prints a warning.
2. The (working) output when I plug a USB1 webcam into my laptop's built-in USB1 hub.
3. The (non-working) output when I plug a USB1 webcam into the PCMCIA USB2 hub.
If there's anything else I can do to help pinpoint the difficulty please let me
know.
Thanks again for your help.
N Lin
-------- snip 1 -------------------------------------------------------------
Boot-time output when UHCI driver is loaded, with warning.
USB Universal Host Controller Interface driver v2.2
ACPI: PCI interrupt 0000:00:1f.2[D] -> GSI 9 (level, low) -> IRQ 9
uhci_hcd 0000:00:1f.2: Intel Corp. 82801BA/BAM USB (Hub #1)
PCI: Setting latency timer of device 0000:00:1f.2 to 64
uhci_hcd 0000:00:1f.2: irq 9, io base 00001820
uhci_hcd 0000:00:1f.2: new USB bus registered, assigned bus number 1
uhci_hcd 0000:00:1f.2: detected 2 ports
usb usb1: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: default language 0x0409
usb usb1: Product: Intel Corp. 82801BA/BAM USB (Hub #1)
usb usb1: Manufacturer: Linux 2.6.8.1 uhci_hcd
usb usb1: SerialNumber: 0000:00:1f.2
usb usb1: hotplug
usb usb1: adding 1-0:1.0 (config #1, interface 0)
usb 1-0:1.0: hotplug
hub 1-0:1.0: usb_probe_interface
hub 1-0:1.0: usb_probe_interface - got id
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
hub 1-0:1.0: standalone hub
hub 1-0:1.0: no power switching (usb 1.0)
hub 1-0:1.0: individual port over-current protection
hub 1-0:1.0: power on to power good time: 2ms
hub 1-0:1.0: local power source is good
ACPI: PCI interrupt 0000:00:1f.4[C] -> GSI 9 (level, low) -> IRQ 9
uhci_hcd 0000:00:1f.4: Intel Corp. 82801BA/BAM USB (Hub #2)
PCI: Setting latency timer of device 0000:00:1f.4 to 64
uhci_hcd 0000:00:1f.4: irq 9, io base 00002400
uhci_hcd 0000:00:1f.4: new USB bus registered, assigned bus number 2
uhci_hcd 0000:00:1f.4: detected 2 ports
usb usb2: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: default language 0x0409
usb usb2: Product: Intel Corp. 82801BA/BAM USB (Hub #2)
usb usb2: Manufacturer: Linux 2.6.8.1 uhci_hcd
usb usb2: SerialNumber: 0000:00:1f.4
usb usb2: hotplug
usb usb2: adding 2-0:1.0 (config #1, interface 0)
usb 2-0:1.0: hotplug
hub 2-0:1.0: usb_probe_interface
hub 2-0:1.0: usb_probe_interface - got id
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
hub 2-0:1.0: standalone hub
hub 2-0:1.0: no power switching (usb 1.0)
hub 2-0:1.0: individual port over-current protection
hub 2-0:1.0: power on to power good time: 2ms
hub 2-0:1.0: local power source is good
uhci_hcd 0000:00:1f.4: port 1 portsc 0093
hub 2-0:1.0: port 1, status 0101, change 0001, 12 Mb/s
PCI: Enabling device 0000:02:00.0 (0000 -> 0001)
ACPI: PCI interrupt 0000:02:00.0[A] -> GSI 9 (level, low) -> IRQ 9
uhci_hcd 0000:02:00.0: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
uhci_hcd 0000:02:00.0: irq 9, io base 00004000
uhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 3
uhci_hcd 0000:02:00.0: detected 2 ports
uhci_hcd 0000:02:00.0: USBCMD_HCRESET timed out!
uhci_hcd 0000:02:00.0: init error -110
uhci_hcd 0000:02:00.0: remove, state 0
uhci_hcd 0000:02:00.0: roothub graceful disconnect
usb_disconnect nodev
Uninitialised timer!
This is just a warning. Your computer is OK
function=0x00000000, data=0x0
[<c012954d>] check_timer_failed+0x6d/0x70
[<c0129a42>] del_timer_sync+0x22/0xe0
[<d0958be4>] usb_disconnect+0x194/0x1a0 [usbcore]
[<d098ec57>] uhci_stop+0x17/0xb0 [uhci_hcd]
[<d0961a67>] usb_hcd_pci_remove+0xb7/0x1b0 [usbcore]
[<d09616e5>] usb_hcd_pci_probe+0x305/0x5d0 [usbcore]
[<c0215062>] pci_device_probe_static+0x52/0x70
[<c02150bc>] __pci_device_probe+0x3c/0x50
[<c02150fc>] pci_device_probe+0x2c/0x50
[<c026853f>]<7>hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
bus_match+0x3f/0x70
[<c026866c>] driver_attach+0x5c/0xa0
[<c0268b92>] bus_add_driver+0x92/0xc0
[<c021538e>] pci_register_driver+0x6e/0xa0
[<d09040c3>] uhci_hcd_init+0xc3/0x141 [uhci_hcd]
[<c013aa80>] sys_init_module+0x130/0x260
[<c01062eb>] syscall_call+0x7/0xb
usb 2-1: new full speed USB device using address 2
usb 2-1: new device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1: default language 0x0409
usb 2-1: Product: USB Memory Stick Slot
usb 2-1: Manufacturer: Sony
usb 2-1: hotplug
uhci_hcd 0000:02:00.0: USB bus 3 deregistered
usb 2-1: adding 2-1:1.0 (config #1, interface 0)
usb 2-1:1.0: hotplug
usb-storage 2-1:1.0: usb_probe_interface
usb-storage 2-1:1.0: usb_probe_interface - got id
uhci_hcd: probe of 0000:02:00.0 failed with error -110
PCI: Enabling device 0000:02:00.1 (0000 -> 0001)
ACPI: PCI interrupt 0000:02:00.1[B] -> GSI 9 (level, low) -> IRQ 9
uhci_hcd 0000:02:00.1: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#2)
scsi0 : SCSI emulation for USB Mass Storage devices
uhci_hcd 0000:02:00.1: irq 9, io base 00004020
Vendor: Sony Model: MSC-U03 Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 02
uhci_hcd 0000:02:00.1: new USB bus registered, assigned bus number 3
uhci_hcd 0000:02:00.1: detected 2 ports
usb usb3: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb3: default language 0x0409
usb usb3: Product: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#2)
usb usb3: Manufacturer: Linux 2.6.8.1 uhci_hcd
usb usb3: SerialNumber: 0000:02:00.1
usb usb3: hotplug
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0
USB Mass Storage device found at 2
usb usb3: adding 3-0:1.0 (config #1, interface 0)
usb 3-0:1.0: hotplug
uhci_hcd 0000:00:1f.2: suspend_hc
hub 3-0:1.0: usb_probe_interface
hub 3-0:1.0: usb_probe_interface - got id
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
hub 3-0:1.0: standalone hub
hub 3-0:1.0: no power switching (usb 1.0)
hub 3-0:1.0: individual port over-current protection
hub 3-0:1.0: power on to power good time: 2ms
hub 3-0:1.0: local power source is good
uhci_hcd 0000:02:00.1: port 1 portsc 008a
hub 3-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
hub 3-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x100
uhci_hcd 0000:02:00.1: port 2 portsc 008a
hub 3-0:1.0: port 2, status 0100, change 0003, 12 Mb/s
hub 3-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x100
uhci_hcd 0000:02:00.1: suspend_hc
-------- snip 2 -------------------------------------------------------------
Working hotplugging of a USB1 webcam into built-in USB1 port.
uhci_hcd 0000:00:1f.2: wakeup_hc
uhci_hcd 0000:00:1f.2: port 1 portsc 0083
hub 1-0:1.0: port 1, status 0101, change 0001, 12 Mb/ s
hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
usb 1-1: new full speed USB device using address 6
usb 1-1: skipped 4 descriptors after interface
usb 1-1: skipped 2 descriptors after interface
usb 1-1: skipped 1 descriptor after endpoint
usb 1-1: skipped 2 descriptors after interface
usb 1-1: skipped 1 descriptor after endpoint
usb 1-1: skipped 2 descriptors after interface
usb 1-1: skipped 1 descriptor after endpoint
usb 1-1: skipped 2 descriptors after interface
usb 1-1: skipped 1 descriptor after endpoint
usb 1-1: new device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: hotplug
usb 1-1: adding 1-1:1.0 (config #1, interface 0)
usb 1-1:1.0: hotplug
Philips webcam 1-1:1.0: usb_probe_interface
Philips webcam 1-1:1.0: usb_probe_interface - got id
pwc Logitech QuickCam Notebook Pro USB webcam detected.
pwc Registered as /dev/video0.
usb 1-1: adding 1-1:1.1 (config #1, interface 1)
usb 1-1:1.1: hotplug
etc, etc.... rest snipped for brevity
-------- snip 3 -------------------------------------------------------------
Non-working hotplugging of a USB1 webcam into PCMCIA USB2 port.
ehci_hcd 0000:02:00.2: port 1 full speed --> companion
ehci_hcd 0000:02:00.2: GetStatus port 1 status 003801 POWER OWNER sig=j CONNECT
That's it - nothing more, nothing about UHCI... shouldn't UHCI take over
at this point?
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