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

Mark Cave-Ayland mark.cave-ayland at ilande.co.uk
Thu Nov 13 13:19:50 CET 2014

This patch fixes up a regression with virtio not working under the latest

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 

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

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. 

Mark Cave-Ayland (4):
  pci.c: remove unneeded CONFIG_PPC define
  pci.c: rework pci_host_set_interrupt_map() to use phandle_t rather
    than pci_config_t
  macio.c: move openpic interrupt map initialisation to after PCI bus
  pci.c: move openpic interrupt mapping to post-PCI-bus scan

 openbios-devel/drivers/macio.c |   40 ---------
 openbios-devel/drivers/pci.c   |  185 +++++++++++++++++++++++++---------------
 2 files changed, 116 insertions(+), 109 deletions(-)


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