Re: 2.6.0-test4: ACPI breaks IDE/USB

[Peter Lieverdink]

Hi Thomas,

Your patch works beautifully. 'acpi=nopci' previously caused IDE to work 
fine, but made the kernel not detect USB and network devices. With your 
patch it sees all peripherals AND acpi is available for the cpu. I wonder 
if it would be accepted into the kernel as a patch to workaround buggy acpi 
bioses.

Thanks heaps!

- Peter.
--
At 23:44 24/08/2003 +0200, you wrote:
> Am Sunday 24 August 2003 22:54 schrieb David van Hoose:
> > Kevin P. Fleming wrote:
> > > Peter Lieverdink wrote:
> > >> When I enable ACPI on 2.6.0-test4 (also on 2.6.0-test3-*), the kernel no
> > >> longer recognises my IDE controller and drops down to PIO mode for
> > >> harddisk access. Additionally, USB devices don't get detected.
> > >
> > > I'm running -test4 here with ACPI and have no trouble with USB devices.
> >
> > I'm running test4 here with ACPI and have no USB following a call trace
> > with "IRQ 20: nobody cared". ACPI seems to make odd reports. I've been
> > having this problem since 2.5.70'ish. Posted numerous times, but nobody
> > seems to care about it. I also have a PS/2 mouse detection when I have
> > no mice attached to my system.
> >
> > >> The system is an Athlon 2400+ on a Gibabyte GA-7VAXP mainboard. (KT400)
> > >
> > > My system is an Athlon 1000 on an MSI KT266-based board.
> >
> > I have a Pentium 4 2.53 GHz on a Asus P4S8X mainboard.
> >
> > -David
> >
> > PS. dmesg is attached with ACPI debug and USB debug enabled.
>
> I had similar problems with my Epox 8K9A (KT400) Board.
>
> If I wanted to use my USB ports I had to boot wiht 'acpi=off'. But with the
> patch attached it is possible for me to boot with 'pci=noacpi'. It has the
> advantage that ACPI stays enabled...
>
> You are free to give it a try...
>
>   Thomas
> --- linux-2.6.0-test4/arch/i386/kernel/acpi/boot.c.orig Sat Aug 23 
> 01:59:02 2003
> +++ linux-2.6.0-test4/arch/i386/kernel/acpi/boot.c      Sat Aug 23 
> 16:39:57 2003
> @@ -41,6 +41,7 @@
>  #define PREFIX                 "ACPI: "
>
>  extern int acpi_disabled;
> +extern int acpi_irq;
>  extern int acpi_ht;
>
>  int acpi_lapic = 0;
> @@ -407,7 +408,7 @@
>         * 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;
>          }
>
> @@ -450,14 +451,13 @@
>         acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
>
>         acpi_ioapic = 1;
> -#endif /*CONFIG_X86_IO_APIC*/
>
>  #ifdef CONFIG_X86_LOCAL_APIC
> -       if (acpi_lapic && acpi_ioapic) {
> -               smp_found_config = 1;
> -               clustered_apic_check();
> -       }
> +       smp_found_config = 1;
> +       clustered_apic_check();
>  #endif
> +
> +#endif /*CONFIG_X86_IO_APIC*/
>
>         return 0;
>  }
> --- linux-2.6.0-test4/arch/i386/kernel/setup.c.orig     Sat Aug 23 
> 01:55:38 2003
> +++ linux-2.6.0-test4/arch/i386/kernel/setup.c  Sat Aug 23 16:34:21 2003
> @@ -71,6 +71,7 @@
>  EXPORT_SYMBOL(acpi_disabled);
>
>  #ifdef CONFIG_ACPI_BOOT
> +       int acpi_irq __initdata = 1;    /* enable IRQ */
>         int acpi_ht __initdata = 1;     /* enable HT */
>  #endif
>
> @@ -542,6 +543,11 @@
>                 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;
>                 }
>
>  #ifdef CONFIG_X86_LOCAL_APIC

-
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