Re: [lkml]Re: [lkml]Re: interrupt problem with MPS 1.4 / not with MPS 1.1 ?

From: thunder7@xs4all.nl
Date: Thu May 31 2001 - 15:27:08 EST

On Thu, May 31, 2001 at 10:21:55PM +0200, Manfred Spraul wrote:
> >
> > I know that with MPS 1.4, the USB controller finds itself at an
> > unshared interrupt 19. I can't reboot at the moment to check.
> >
> lspci -vxxx -s 00:07.0
>
> the APIC sits in the southbridge.
> the low 2 bits of offset 0x58 must be set [route USB IRQ to APIC], and
>
> lspci -vx -s 00:07.2
>
> offset 0x3C must be set to 3 [19 & 15]
>
> There was some discussion about the same problem with the sound part of
> the southbridge.
>
> What are the current values of these registers?
>
current, as in MPS 1.1:

00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
        Subsystem: ABIT Computer Corp.: Unknown device 0000
        Flags: bus master, stepping, medium devsel, latency 0
        Capabilities: [c0] Power Management version 2
50: 02 76 04 00 00 f0 ab 50 1f 06 ff 08 00 00 00 00

I'd say the lower 2 bits at 0x58 are set.

00:07.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 16) (prog-if 00 [UHCI])
        Subsystem: Unknown device 0925:1234
        Flags: bus master, medium devsel, latency 32, IRQ 5
        I/O ports at a000 [size=32]
        Capabilities: [80] Power Management version 2
30: 00 00 00 00 80 00 00 00 00 00 00 00 05 04 00 00

0x3X is at 5, not at 3.

Greetings,
Jurriaan 

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