2001-07-11 04:18:08

by Tom Holroyd

[permalink] [raw]
Subject: irq problem with OHCI USB

Alpha DP264 (UP), kernel 2.4.6 (gcc 3.0).

1. usbcore didn't work as a module, complaining
that it needed hotplug_path (hotplug _is_ enabled).

2. relinked usbcore static, everything else still
a module, but now during boot:

usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
...
usb-ohci.c: USB OHCI at membase 0xfffffd000a090000, IRQ 234
usb-ohci.c: usb-00:05.3, Contaq Microsystems 82c693 (#4)
usb.c: new USB bus registered, assigned bus number 1
usb-ohci.c: request interrupt 234 failed
usb.c: USB bus 1 deregistered

lspci -xvv says:

00:05.3 USB Controller: Contaq Microsystems 82c693 (prog-if 10 [OHCI])
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 32
Interrupt: pin A routed to IRQ 234
Region 0: Memory at 000000000a090000 (32-bit, non-prefetchable)
[size=4K]
00: 80 10 93 c6 06 00 80 02 00 10 03 0c 00 20 80 00
10: 00 00 09 0a 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 ea 01 00 00

Further attempts to insmod usb-ohci report
/lib/modules/2.4.6/kernel/drivers/usb/usb-ohci.o: init_module: No such device



2001-07-11 06:12:01

by Tom Holroyd

[permalink] [raw]
Subject: Re: irq problem with OHCI USB

> 00:05.3 USB Controller: Contaq Microsystems 82c693 (prog-if 10 [OHCI])

Going through the (Japanese) documentation for this box, I noticed that no
claim is made that the USB ports actually work. Certainly they are there,
and a controller appears to be there; but it seems at least possible that
they are not connected.

Ah well, 2.4.6 is running fine otherwise.