From: Robert Hancock <hancockr@shaw.ca>
To: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Help enabling PCI interrupts on Dell/SMP and Sun/SMP systems.
Date: Wed, 23 Feb 2005 17:25:12 -0600 [thread overview]
Message-ID: <421D10D8.4060201@shaw.ca> (raw)
In-Reply-To: <3BdkS-GS-21@gated-at.bofh.it>
Alan Kilian wrote:
> kernel: SSE: Found a DeCypher card.
> kernel: ACPI: PCI interrupt 0000:13:03.0[A] -> GSI 36 (level, low) ->
> IRQ 217
>
> The first message is in my driver after pci_find_device()
> The second is from when I do pci_enable_device(dev);
>
> Can you decode the mysterious ACPI message?
Looks like you're requesting the wrong interrupt, 217 is the one your
device is actually on. You always have to request the interrupt listed
in the PCI device structure. If you're looking at your PCI device's
configuration registers to get the IRQ to request, that's wrong, since
that is configured by the BIOS assuming PIC IRQ routing, but APIC IRQ
routing is entirely different.
next parent reply other threads:[~2005-02-23 23:32 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3Bbj7-7lG-17@gated-at.bofh.it>
[not found] ` <3BbMe-7FP-39@gated-at.bofh.it>
[not found] ` <3BdkS-GS-21@gated-at.bofh.it>
2005-02-23 23:25 ` Robert Hancock [this message]
[not found] ` <3BdNW-1bH-29@gated-at.bofh.it>
[not found] ` <3Be7p-1pY-43@gated-at.bofh.it>
2005-02-23 23:52 ` Help enabling PCI interrupts on Dell/SMP and Sun/SMP systems Robert Hancock
2005-02-23 20:24 Alan Kilian
2005-02-23 20:46 ` linux-os
2005-02-23 22:17 ` Alan Kilian
2005-02-23 22:58 ` Peter Chubb
2005-02-23 23:24 ` Alan Kilian
2005-02-23 23:46 ` Roland Dreier
2005-02-24 1:23 ` Alan Kilian
2005-02-24 12:37 ` linux-os
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