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    SubjectRe: [BUG] Ricoh Cardbus -> Can't get interrupts
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    On Mon, Nov 24, 2003 at 06:06:51PM -0800, Linus Torvalds wrote:
    >
    > On Mon, 24 Nov 2003, Jean Tourrilhes wrote:
    > >
    > > This is a box from 1998, and the manual doesn't mention
    > > anything about ACPI. I highly doubt it would support ACPI, but how do
    > > I check that ?
    >
    > Enable CONFIG_ACPI and CONFIG_ACPI_BOOT.

    ----------------------------------------------------
    ACPI: Subsystem revision 20031002
    ACPI: System description tables not found
    ACPI-0084: *** Error: acpi_load_tables: Could not get RSDP, AE_NOT_FOUND
    ACPI-0134: *** Error: acpi_load_tables: Could not load tables: AE_NOT_FOUND
    ACPI: Unable to load the System Description Tables
    ----------------------------------------------------

    > > Which in this case failed. I think all I need is to configure
    > > cp_pci_irq to the proper value.
    >
    > That may work, but it equally well might not. Quite often the irq routing
    > actually has to physically connect the irq line (well, "physically" in
    > this case is a matter of reprogramming the proper southbridge registers).

    In the case of the old Pcmcia package, there was a bunch of
    options to take care of that, such as "cb_pci_irq". I didn't try yet
    the old Pcmcia package to check if this option is working, because I
    would need to recompile a kernel 2.4.X. But, if the old Pcmcia package
    was able to do it, it's not impossible.

    > Linus

    Currently, I managed to narrow down to :
    -------------------------------------------------
    PCI: Using IRQ router PIIX [8086/7110] at 0000:00:07.0
    PCI: IRQ fixup
    querying PCI -> IRQ mapping bus:0, slot:7, pin:3.
    pin_2_irq idx:9, apic:0, pin:19.
    PCI->APIC IRQ transform: (B0,I7,P3) -> 19
    querying PCI -> IRQ mapping bus:0, slot:8, pin:0.
    pin_2_irq idx:16, apic:0, pin:16.
    PCI->APIC IRQ transform: (B0,I8,P0) -> 16
    querying PCI -> IRQ mapping bus:0, slot:17, pin:0.
    pin_2_irq idx:19, apic:0, pin:18.
    PCI->APIC IRQ transform: (B0,I17,P0) -> 18
    querying PCI -> IRQ mapping bus:0, slot:18, pin:0.
    pin_2_irq idx:20, apic:0, pin:16.
    PCI->APIC IRQ transform: (B0,I18,P0) -> 16
    querying PCI -> IRQ mapping bus:0, slot:19, pin:0.
    querying PCI -> IRQ mapping bus:1, slot:0, pin:0.
    pin_2_irq idx:21, apic:0, pin:18.
    PCI->APIC IRQ transform: (B1,I0,P0) -> 18
    querying PCI -> IRQ mapping bus:2, slot:4, pin:0.
    pin_2_irq idx:17, apic:0, pin:17.
    PCI->APIC IRQ transform: (B2,I4,P0) -> 17
    querying PCI -> IRQ mapping bus:2, slot:5, pin:0.
    pin_2_irq idx:18, apic:0, pin:18.
    PCI->APIC IRQ transform: (B2,I5,P0) -> 18
    -------------------------------------------------
    The Pcmcia bridge is in slot 19.

    Thanks a lot !

    Jean

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