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    SubjectRe: [PATCH 2/2] Initial generic hypertransport interrupt support.
    Andi Kleen <> writes:

    > (Eric W. Biederman) writes:
    >> This patch implements two functions ht_create_irq and ht_destroy_irq
    >> for use by drivers. Several other functions are implemented as helpers
    >> for arch specific irq_chip handlers.
    > What do you want to use it for? Normally all HT configuration should be handled
    > by the BIOS and not messed with by the kernel.

    I don't believe this is a typical HT configuration as you are thinking of it.

    There is a hypertransport capability that implements a rough equivalent
    of a per device ioapic. It is quite similar to MSI but with a different
    register level interface.

    Since native hypertransport devices do not implement a pin emulation mode
    as native pci express devices do so if you want an interrupt you must support
    the native hypertransport method.

    The pathscale ipath-ht400 driver already in the kernel tree uses these
    and uses so an ugly hack to make work that broke in the last round of
    the msi cleanups. I also know of a driver under development for a
    device that uses these as well.

    So I want to use this so I can get irqs from native hypertransport

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      Last update: 2006-07-12 05:09    [W:0.019 / U:10.040 seconds]
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