Re: [Xen-devel] Status of USB on 2.4.26-uml0?

[Mark Hurenkamp <Mark.Hurenkamp@xxxxxxxxx>]

> > However, it seemed that the uhci driver 
> > wouldn't load, it complained about not being able to find/allocate IRQ...
> > Same also for the ehci driver :-(Browsing through the mail archives, I
> > noticed someone had a similar problem in march, but he had 'patched' the
> > kernel to support USB, wheras now, I could just choose it from the
> > default kernel configuration menu. My only question is, is this supposed
> > to work currently? Has anyone had success in getting USB up and running?
> > Or is this still a work in progress known not to work?
>
> Our default 2.4.26 kernel configuration doesn't have USB compiled
> in, but if you do enable it it should work fine -- I've used a
> USB memory stick device without problems, and I'd expect mouse
> and keyboard to work too.
>
> Ian

Ah, it's good to hear that there's reported succes with USB on Xen,
too bad I'm not currently able to repeat that though :-(

I'm running this on an Asus A7M266D dual-athlon system, the USB2
card came with the system, is there anything special with this system?
I also tried to insert the cmpci driver (there are two such devices in the
system; one onboard, and one PCI card), and it also complains with a
similar "No IRQ known for pin A of device 03:04.0" message.

How does Xen deal with shared interrupts? I do have a lot of devices
in my system (2 Graphic cards, an USB2 card, a sound card, an ISDN card, 
and a TV capture card).
Could the "Plug-and-Play OS" setting in my Bios have any impact on Xen?
(since it seems that some IRQs are not assigned...?)



Here's the output I get, I tried to load uhci, then usb-uhci (the alternate
driver), and last the ehci driver. All failed :-(

nine root # modprobe uhci
nine root # dmesg
...
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
uhci.c: USB Universal Host Controller Interface driver v1.1
usb.c: deregistering driver usbdevfs
usb.c: deregistering driver hub

nine root # modprobe usb-uhci
nine root # dmesg
...
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.275 $ time 01:53:24 Aug  8 2004
usb-uhci.c: High bandwidth mode enabled
usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
usb.c: deregistering driver usbdevfs
usb.c: deregistering driver hub

nine root # modprobe ehci
nine root # dmesg
...
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
PCI: Enabling device 00:08.2 (0014 -> 0016)
PCI: No IRQ known for interrupt pin C of device 00:08.2.
hcd.c: Found HC with no IRQ.  Check BIOS/PCI 00:08.2 setup!
usb.c: deregistering driver usbdevfs
usb.c: deregistering driver hub


And here's the output of /var/log/messages:
Aug 10 21:48:31 nine kernel: usb.c: registered new driver usbdevfs
Aug 10 21:48:31 nine kernel: usb.c: registered new driver hub
Aug 10 21:48:31 nine kernel: uhci.c: USB Universal Host Controller Interface 
driver v1.1
Aug 10 21:48:31 nine kernel: usb.c: deregistering driver usbdevfs
Aug 10 21:48:31 nine kernel: usb.c: deregistering driver hub
Aug 10 21:49:52 nine kernel: usb.c: registered new driver usbdevfs
Aug 10 21:49:52 nine kernel: usb.c: registered new driver hub
Aug 10 21:49:52 nine kernel: uhci.c: USB Universal Host Controller Interface 
driver v1.1
Aug 10 21:49:52 nine kernel: usb.c: deregistering driver usbdevfs
Aug 10 21:49:52 nine kernel: usb.c: deregistering driver hub
Aug 10 21:51:44 nine kernel: usb.c: registered new driver usbdevfs
Aug 10 21:51:44 nine kernel: usb.c: registered new driver hub
Aug 10 21:51:44 nine kernel: usb-uhci.c: $Revision: 1.275 $ time 01:53:24 Aug  
8 2004
Aug 10 21:51:44 nine kernel: usb-uhci.c: High bandwidth mode enabled
Aug 10 21:51:44 nine kernel: usb-uhci.c: v1.275:USB Universal Host Controller 
Interface driver
Aug 10 21:51:44 nine kernel: usb.c: deregistering driver usbdevfs
Aug 10 21:51:44 nine kernel: usb.c: deregistering driver hub
Aug 10 21:53:26 nine kernel: usb.c: registered new driver usbdevfs
Aug 10 21:53:26 nine kernel: usb.c: registered new driver hub
Aug 10 21:53:26 nine kernel: PCI: Enabling device 00:08.2 (0014 -> 0016)
Aug 10 21:53:26 nine kernel: PCI: No IRQ known for interrupt pin C of device 
00:08.2.
Aug 10 21:53:26 nine kernel: hcd.c: Found HC with no IRQ.  Check BIOS/PCI 
00:08.2 setup!
Aug 10 21:53:26 nine kernel: usb.c: deregistering driver usbdevfs
Aug 10 21:53:26 nine kernel: usb.c: deregistering driver hub

And lspci shows this:
00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-760 MP [IGD4-2P] System 
Controller (rev 11)
00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ISA (rev 05)
00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-768 [Opus] IDE (rev 
04)
00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-768 [Opus] ACPI (rev 03)
00:08.0 USB Controller: NEC Corporation USB (rev 41)
00:08.1 USB Controller: NEC Corporation USB (rev 41)
00:08.2 USB Controller: NEC Corporation USB 2.0 (rev 02)
01:05.0 VGA compatible controller: Matrox Graphics, Inc. MGA G550 AGP (rev 01)
02:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 85)
03:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-768 [Opus] USB (rev 
07)
03:04.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
03:05.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
03:06.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture 
(rev 11)
03:06.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 
11)
03:08.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH 
Fritz!PCI v2.0 ISDN (rev 01)


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