Re: [2.4.20][2.5.60] /proc/interrupts comparsion - two irqs for i8042?

From: Shawn Starr (spstarr@sh0n.net)
Date: Wed Feb 12 2003 - 13:07:00 EST


hmm, It appears the PS/2 was not on when I built that kernel.

But the fact remains, I'm out of IRQs some how. ;/

Shawn.

On Wed, 12 Feb 2003, Randy.Dunlap wrote:

> (see an answer at bottom)
>
> On Wed, 12 Feb 2003 11:12:02 -0500 (EST)
> Shawn Starr <spstarr@sh0n.net> wrote:
>
> |
> | Right, but this wasn't a problem in 2.4? I had a PS/2 mouse before in 2.4
> | and this didnt have the problem.
> |
> |
> | On Wed, 12 Feb 2003, Brian Gerst wrote:
> |
> | > Shawn Starr wrote:
> | > > 2.4:
> | > > CPU0
> | > > 0: 2576292 XT-PIC timer
> | > > 1: 661 XT-PIC keyboard
> | > > 2: 0 XT-PIC cascade
> | > > 3: 10 XT-PIC serial
> | > > 5: 1104824 XT-PIC soundblaster
> | > > 8: 1 XT-PIC rtc
> | > > 9: 0 XT-PIC acpi
> | > > 10: 7 XT-PIC aic7xxx
> | > > 11: 15167 XT-PIC usb-uhci, eth0
> | > > 14: 7554 XT-PIC ide0
> | > > 15: 3 XT-PIC ide1
> | > >
> | > > 2.5:
> | > >
> | > > CPU0
> | > > 0: 36281 XT-PIC timer
> | > > 1: 15 XT-PIC i8042
> | > > 2: 0 XT-PIC cascade
> | > > 3: 149 XT-PIC serial
> | > > 5: 0 XT-PIC soundblaster
> | > > 8: 1 XT-PIC rtc
> | > > 9: 0 XT-PIC acpi
> | > > 10: 20 XT-PIC aic7xxx
> | > > 11: 324 XT-PIC uhci-hcd, eth0
> | > > 12: 60 XT-PIC i8042 <--???
> | > > 14: 723 XT-PIC ide0
> | > > 15: 9 XT-PIC ide1
> | > > NMI: 0
> | > > LOC: 35547
> | > > ERR: 0
> | > > MIS: 0
> | > >
> | > > Interesting, why are we using two interrupts for the i8042 (keyboard).
> | >
> | > IRQ12 is for the PS/2 mouse port.
> | >
> | > --
> | > Brian Gerst
>
> Do you have a PS/2 mouse enabled/configured in 2.4?
> I do, and it shows this on 2.4.20:
>
> 0: 78505022 XT-PIC timer
> 1: 305438 XT-PIC keyboard
> 2: 0 XT-PIC cascade
> 3: 2013477 XT-PIC xirc2ps_cs
> 5: 0 XT-PIC usb-uhci
> 8: 1 XT-PIC rtc
> 10: 4 XT-PIC i82365
> 11: 2188569 XT-PIC i82365, cs46xx
> 12: 1555382 XT-PIC PS/2 Mouse
> 14: 872963 XT-PIC ide0
> 15: 3 XT-PIC ide1
>
> and the driver code certainly requests IRQ 12 for the PS/2 mouse
> when it's configured.
>
> --
> ~Randy
>
>

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