Re: Help enabling PCI interrupts on Dell/SMP and Sun/SMP systems.
From: Alan Kilian
Date: Wed Feb 23 2005 - 18:28:59 EST
> Alan> kernel: SSE: Found a DeCypher card. kernel: ACPI: PCI
> Alan> interrupt 0000:13:03.0[A] -> GSI 36 (level, low) -> IRQ 217
>
> If ACPI has set this device up to use interrupt 217, why are you
> registering it on IRQ 5?
>
Peter,
Maybe that's it.
I ask the card which interrupt line it was given at boot-time:
pci_read_config_byte(dev, PCI_INTERRUPT_LINE,
&softp->interrupt_line);
Then I request an IRQ:
request_irq(softp->interrupt_line, sseintr,
SA_INTERRUPT, "sse", softp);
I don't know who exactly is assigning IRQ 217, and I don't know
where I could read that value.
Are you suggesting I should call request_irq(217, sseintr,
SA_INTERRUPT, "sse", softp);
Maybe you are on to the problem.
I found out that if I boot with "pci-noapic" that everyting
works on the Sun machine!!!
-Alan
--
- Alan Kilian <kilian(at)bobodyne.com>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/