[OpenBIOS] [PATCH 0/4] Move interrupt mapping routines to post-PCI bus scan

[Alexander Graf]

On 11/13/14 13:19, Mark Cave-Ayland wrote:
> This patch fixes up a regression with virtio not working under the latest
> OpenBIOS SPARC64.
>
> The error was introduced by the new interrupt routing code which needs to
> generate interrupt-map properties based upon the current active PCI slot
> (previously the OS would determine this automatically as the properties
> weren't present in the device tree).
>
> In its current form, the code works by hard-coding the slots for the
> network and disk devices; however this fails to map the interrupt for
> devices added at QEMU runtime via device such as virtio.
>
> This patchset fixes this problem in the following way:
>
> 1) Move the PCI host interrupt setup from out of the per-device host
> bridge callback (called generally towards the start of the PCI bus scan)
> and into a separate function called after the entire PCI bus has been
> scanned
>
> 2) Add code to dynamically generate the interrupt-map property for
> slots containing devices with an interrupt pin once the PCI bus scan
> is complete
>
> 3) As a bonus: tidy up the openpic interrupt mapping into the same
> routine
>
> I believe there is a strong case for getting this patchset into the
> upcoming QEMU 2.2 release, so please let me know if there are any
> great objections.

Acked-by: Alexander Graf <agraf at suse.de>


Alex