Re: 2.6.0-test3-mm3 reserve IRQ for isapnp (2.6.0-test3-mm3 <sigh>)

[Wes Janzen]

Thanks, I was supposed to try that too, but I forgot ;-)

So I tried it.  Doesn't work...  It does change the IRQ assignments, but 
I don't think there would be any hope of it running without ACPI.  Isn't 
ACPI required for IRQ sharing?  If not then it might work.

It uses 6 IRQ's just between the IDE and USB...the thing's stuffed with 
cards.  Add video, SB16, 2 serial ports, parallel...well, you get the 
idea. 

Now if VIA would have made it correctly in the first place...

Wes

Thomas Schlichter wrote:

> Hi,
>
> I had similar problems with the ACPI IRQ routing, too.
>
> For me everything worked fine if I used acpi=off. I didn't see your results 
> trying this... If this works you may be interested in the attached patch 
> which also makes pci=noacpi work for me!
>
> I'd be interested in your results with the patch...
>
> Best regards
>  Thomas Schlichter
>
> On Thursday 21 August 2003 11:57, Wes Janzen wrote:
>  
>
> > Hi again!
> >
> > OK, finally managed to boot, though I had to disable USB and ISAPNP to
> > do that.  I couldn't get it to work until I disabled ISA PNP in the
> > build menu.
> >
> > Even without ISAPNP I had trouble.  I tried nousb on its own, which did
> > not work.  I had to use both pci=noacpi, nolapic, noapic and nousb.  Now
> > I don't know if I HAD to use the apic ones, but it probably doesn't
> > matter since my box isn't capable anyway.  I just wanted it to boot
> > because it takes a while for those Promise cards to detect the drives.
> >
> > Finally it would boot, but then I lose a lot without usb.  Oddly, IRQ 5
> > is freed with both nousb AND pci=noacpi.  That was not the case with
> > just pci=noacpi or just nousb.  But then maybe that isn't so odd since
> > the USB card sucks up 3 irqs.  With just pci=noacpi I made it several
> > lines farther.  Instead of "mice: PS/2 mouse device...", I got to see
> > "hub 1-0:0: new USB device on port2, assigned address 2", which was
> > proceeded by some ACPI message that also said something (IIRC) about
> > states S4 and S5.  Usually it only says something about C1 and C2.
> >
> > Anyway, for what it's worth, here's cat /proc/interrupts:
> >           CPU0
> >  0:     199807          XT-PIC  timer
> >  1:        822          XT-PIC  i8042
> >  2:          0          XT-PIC  cascade
> >  7:          1          XT-PIC  parport0
> >  8:          2          XT-PIC  rtc
> >  9:          7          XT-PIC  acpi, eth0
> > 11:       7631          XT-PIC  ide2, ide3
> > 12:         70          XT-PIC  ide4, ide5
> > 14:          1          XT-PIC  ide0
> > NMI:          0
> > LOC:          0
> > ERR:          0
> > MIS:          0
> >
> > I've attached lspic -vv and boot.msg this time rather than include them in.
> >
> > Sure would be nice to get mm3 working with those reiserfs fixes...I
> > guess I'll just hand patch for now.  Sure beats the rebuild-tree I have
> > to do every 5 days or so ;-)
> >
> > Thanks,
> >
> > Wes
> >    
> >
> > ------------------------------------------------------------------------
> >
> > --- linux-2.6.0-test3-mm3/arch/i386/kernel/acpi/boot.c.orig	Wed Aug 20 03:42:13 2003
> > +++ linux-2.6.0-test3-mm3/arch/i386/kernel/acpi/boot.c	Wed Aug 20 04:03:56 2003
> > @@ -39,6 +39,7 @@
> > #define PREFIX			"ACPI: "
> >
> > extern int acpi_disabled;
> > +extern int acpi_irq;
> > extern int acpi_ht;
> >
> > /* --------------------------------------------------------------------------
> > @@ -416,7 +417,7 @@
> > 	 * If MPS is present, it will handle them,
> > 	 * otherwise the system will stay in PIC mode
> > 	 */
> > -	if (acpi_disabled) {
> > +	if (acpi_disabled || !acpi_irq) {
> > 		return 1;
> >         }
> >
> > @@ -451,15 +452,13 @@
> >
> > 	acpi_ioapic = 1;
> >
> > +#ifdef CONFIG_X86_LOCAL_APIC
> > +	smp_found_config = 1;
> > +	clustered_apic_check();
> > +#endif
> > +
> > #endif /*CONFIG_ACPI*/
> > #endif /*CONFIG_X86_IO_APIC*/
> > -
> > -#ifdef CONFIG_X86_LOCAL_APIC
> > -	if (acpi_lapic && acpi_ioapic) {
> > -		smp_found_config = 1;
> > -		clustered_apic_check();
> > -	}
> > -#endif
> >
> > 	return 0;
> > }
> > --- linux-2.6.0-test3-mm3/arch/i386/kernel/setup.c.orig	Wed Aug 20 03:41:56 2003
> > +++ linux-2.6.0-test3-mm3/arch/i386/kernel/setup.c	Wed Aug 20 04:03:03 2003
> > @@ -70,6 +70,7 @@
> > EXPORT_SYMBOL(acpi_disabled);
> >
> > #ifdef	CONFIG_ACPI_BOOT
> > +	int acpi_irq __initdata = 1;	/* enable IRQ */
> > 	int acpi_ht __initdata = 1;	/* enable HT */
> > #endif
> >
> > @@ -541,6 +542,11 @@
> > 		else if (!memcmp(from, "acpi=ht", 7)) {
> > 			acpi_ht = 1;
> > 			if (!acpi_force) acpi_disabled = 1;
> > +		}
> > +
> > +		/* "pci=noacpi" disables ACPI interrupt routing */
> > +		else if (!memcmp(from, "pci=noacpi", 10)) {
> > +			acpi_irq = 0;
> > 		}
> > #endif
> >
> >    

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