Not enough IRQs for multiple PCMCIA cards

[Chris Howells <chrish-puGfsi27rH1aa/9Udqfwiw@public.gmane.org>]

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Hi,

I'm having huge problems trying to get enough IRQs for me to be able
to use a PCMCIA modem (D-Link 560) and a Wifi card (Netgear MA401)
simultaneously.

Basically, after PCI devices have been assigned IRQs there is only one
free IRQ which can be allocated to a PCMCIA card. If I disable some
stuff like the onboard serial and parallel ports, PCI devices get
assigned the IRQs that I have just disabled, which is of absolutely no
use.

For example, if I plug my modem in, it gets assigned IRQ 7. If I
remove it, and plug the Wifi card in, it gets assigned IRQ 7. If I put
both in simultaneously, the last one to be inserted does not get an
IRQ.

I have tried with ACPI enabled and with pci=noacpi.

Regrettably, my BIOS (Award Asus L3800C BIOS) does not give me any
control how IRQs are designed or PnP OS settings.

Currently, the IRQs look something like this:

chris@galadriel:~> cat /proc/interrupts
           CPU0
  0:     255219          XT-PIC  timer
  1:      11434          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  3:          6          XT-PIC  eth0, usb-uhci
  5:     163935          XT-PIC  usb-uhci, Ricoh Co Ltd RL5c476 II,
radeon@PCI:1:0:0
  7:      56829          XT-PIC  serial
  8:          2          XT-PIC  rtc
  9:         17          XT-PIC  acpi
 11:      29726          XT-PIC  Intel 82801CA-ICH3, Ricoh Co Ltd
RL5c476 II (#2)
 12:         75          XT-PIC  PS/2 Mouse
 14:      20172          XT-PIC  ide0
 15:         88          XT-PIC  ide1

(this is with the serial and parallel ports disabled in an attempt to
free some IRQs, which is something that I do not want to have set
permanently).

Thanks for any ideas
- -- 
Cheers, Chris Howells -- chris-NvB7AskkBIqIudiWw5vspbVCufUGDwFn@public.gmane.org, howells@kde.org
Web: http://chrishowells.co.uk, PGP ID: 33795A2C
KDE: http://www.koffice.org, http://printing.kde.org, http://usability.kde.org

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