Re: [Fwd: No IRQ known for interrupt pin A of device 00:0f.0]

From: Remi Turk (remi@a2zis.com)
Date: Sat Oct 28 2000 - 18:27:25 EDT

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    Jeff Garzik wrote:
    >
    > Attached below is a message I just sent to someone else who is having
    > the same problem as you. Would it be possible for you to try the stuff
    > I suggest in the message as well?
    >
    > Thanks,
    >
    > Jeff
    >
    > Subject: Re: No IRQ known for interrupt pin A of device 00:0f.0
    > Date: Sat, 28 Oct 2000 15:38:49 -0400
    > From: Jeff Garzik <jgarzik@mandrakesoft.com>
    > Organization: MandrakeSoft
    > To: Burton Windle <burton@fint.org>
    > CC: andre@linux-ide.org, Linus Torvalds <torvalds@transmeta.com>,
    > mj@ucw.cz
    > References: <Pine.LNX.4.21.0010281456180.9491-100000@fint.staticky.com>
    >
    > Ok, the problem is that you have an interrupt router table for your Ali
    > 1533, but no interrupt router entry for your IDE device. That's why
    > pci_enable_device is failing.
    >
    > Would you mind testing two kernel patches for me? Both of these changes
    > should be attempted separately in 2.4.0-test10-pre6, and -without-
    > Andre's change.
    >
    > The first change attempts to build an interrupt router entry for you, if
    > none is available. I am most interested if this works.
    >
    > The second change simply ignores any pci_enable_device error returns,
    > and assumes that the IDE subsystem will pick up the pieces.
    >
    > Remember, do not apply both of these changes at the same time...
    >
    > Thanks,
    >
    > Jeff

    The second patch (the one ignoring errors) doesn't seem to change
    anything (except not giving the warning IIRC)
    Also, dump_pirq and lspci -vv output didn't change.

    The first says the following at boot:

    PCI: PCI BIOS revision 2.10 entry at 0xf0560, last bus=1
    PCI: Using configuration type 1
    PCI: Probing PCI hardware
    Unknown bridge resource 0: assuming transparent
    PCI: Using IRQ router ALI [10b9/1533] at 00:07.0
    PCI: Found IRQ 14 for device 00:0f.0

    dump_pirq output remains the same.
    The lspci -vv output does change with the second patch:

     00:0f.0 IDE interface: Acer Laboratories Inc. M5229 (rev c1) (prog-if
    fa)
             Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
    Stepping- SERR- FastB2B-
             Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
    <TAbort- <MAbort- >SERR- <PERR-
             Latency: 2 min, 4 max, 32 set
    - Interrupt: pin A routed to IRQ 0
    + Interrupt: pin A routed to IRQ 14
             Region 4: I/O ports at d000

    More info on request. 

    -- 
Linux 2.4.0-test10-pre6-test1 #1 Sat Oct 28 23:04:32 CEST 2000
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