Re: PROBLEM: "drive appears confused" and "irq 18: nobody cared!"

[Alexander Fieroch]

Protasevich, Natalie wrote:
> Hi Alexander,
> To me, it looks like both IDE channels get wrong IRQ. Didn't you
> verified previously that when you go without IDE the system boots up OK?

Yes it does. That's the way I'm currently using linux.

> They get some interrupts because when IRQ 201 occurs triggered by USB,
> the handler for ide runs also, since it is shared with both ide and
> uhci. (Can you also attach output for "cat /proc/interrupts" please).

Ah, acknowledged. IDE and USB iterrupts are shared. /proc/interrupts is 
attached.

> > >Then I would try forth-feeding IRQ 14 to the IDE.
> >
> > I don't know how to do that.
>
> I was going to put some code together for you over the weekend, but got
> caught up in other things, sorry. 

No problem. I just wanted to know that the problem is not forgotten.

> The idea was to forcibly assign IRQ 14
> for ide0 and IRQ 15 for ide1 in the ide driver, setup-pci.c (just for
> diagnostics and proof of concept so to speak) and see if devices become
> sane.
> I will try tweaking it tonight. I need to make sure it works on my
> system first and if it does I will send you the code. 

> Thanks,
> --Natalie

No, thank you for working on that problem!

Regards,
Alexander
           CPU0       CPU1       
  0:     143266          0    IO-APIC-edge  timer
  1:        908          0    IO-APIC-edge  i8042
  7:          0          0    IO-APIC-edge  parport0
  8:          0          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 10:          0          0    IO-APIC-edge  MPU401 UART
169:       1857          0   IO-APIC-level  skge, uhci_hcd:usb5, HDA Intel
177:          3          0   IO-APIC-level  bttv0
185:        365          0   IO-APIC-level  ide2, ehci_hcd:usb1, uhci_hcd:usb2
193:      13324          0   IO-APIC-level  libata, uhci_hcd:usb3
201:    1600000          0   IO-APIC-level  ide0, uhci_hcd:usb4
209:          3          0   IO-APIC-level  ohci1394, Ensoniq AudioPCI
NMI:         51          1 
LOC:     140268     140272 
ERR:          1
MIS:          0