On Fri, 29 Jun 2007 14:09:23 -0700 (PDT) [EMAIL PROTECTED] wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=8690 > > Summary: Bulk IN transfers hanging randomly on Intel ICHx USB > EHCI HCD > Product: Drivers > Version: 2.5 > KernelVersion: 2.6.22-rc6 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: USB > AssignedTo: [EMAIL PROTECTED] > ReportedBy: [EMAIL PROTECTED] > > > Most recent kernel where this bug did not occur: none (??) > Distribution: FC7 > Hardware Environment: > > 00:00.0 Host bridge: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub > Interface (rev 02) > 00:01.0 PCI bridge: Intel Corporation 82865G/PE/P PCI to AGP Controller (rev > 02) > 00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI > Controller #1 (rev 02) > 00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI > Controller #2 (rev 02) > 00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI > Controller #3 (rev 02) > 00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI > Controller #4 (rev 02) > 00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI > Controller (rev 02) > 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2) > 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface > Bridge (rev 02) > 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE > Controller > (rev 02) > 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev > 02) > 00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev > 02) > 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) > AC'97 Audio Controller (rev 02) > 01:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 440 > AGP > 8x] (rev a2) > 02:04.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 > Controller (rev 61) > 02:04.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 > Controller (rev 61) > 02:04.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63) > 02:04.3 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller > (rev 46) > 02:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL-8139/8139C/8139C+ (rev 10) > > Software Environment: > Problem Description: > > When I'm doing a continuous High-Speed bulk IN transfers from a device (the > device has a Philips/NXP ISP1581 USB device controller) and this device is > connected to an Intel ICHx (tried with ICH5 and ICH7 and both had the problem) > (EHCI) HCD, the transfer starts, works for some while, which is not really > predictable, sometimes it is a second (few tenths of MB transferred), > sometimes > it is few minutes (few GB transferred) (but usually not more) and then all of > a > sudden, the transfer stops. Without any warning, error, anything, it just > stops. > > The driver for the device (that I'm writing) keeps about 10 to 40 buffers of > 32 > KB size permanently linked/submitted for the Bulk IN transfers from the device > (resp. its particular Bulk IN endpoint) and the number of linked/submitted > buffers at a time never falls below 10 during the transfer. When one buffer > transfer completes, another is immediately linked/submitted from within the > URB > completion handler. > > But while the bulk IN transfers on ICHx HCD do have this problem, isochronous > IN transfers from the same device (only different endpoint) on the same HCDs > do > not have any problem, they work correctly for any period of time. > > So at first I thought it might be a problem either in the device USB > controller > ISP1581 or somewhere in my driver. But then I tried on different computers > with > non Intel chipset and CPU (though I'm not sure whether CPU is relevant in this > case), like AMD on VIA and AMD on nVidia, and there everything works great, > i.e. the transfer doesn't stop. I also tried to insert a USB HCD add-on card > based on VIA HCD chip into the computer where it failed on the ICH5 chipset > (otherwise everything else remained the same, both other HW and kernel), ant > connected the device through this card and then it also worked without a > problem. > > That makes me think, that the problem would probably not be in the ISP1581 or > my driver, but rather in the HCD driver in handling the bulk transfers for the > ICHx HCD. Unless all the ICHx HCDs are buggy in hardware, which of course I do > not know either. But is it? Or can there be any other explanation? Please > help. > > So, does any USB HCD guru around here have any idea where the problem might > possibly be? I can help with debugging or even fixing, but someone more > familiar with the HCD core might have a better luck or at least some hints as > to where to look, at least. > > Steps to reproduce: Described above. > > > -- > Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug, or are watching someone who is.
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