For some machines it is impossible to plug devices into a particular PCI bus
slot, e.g. for a real Ultra 5 there are 2 PCI bridges attached to the root
bus behind which all devices must be plugged. Ignoring this rule will cause
problems with interrupt routing since the interrupt numbers are calculated
based upon PCI bridge id and secondary PCI bus slot id.
This patchset adds a new dev_reserved_mask property to PCIBus which is a
bitmask used to indicate whether PCI bus slots are reserved, i.e. they cannot
be used for hot or cold plugging on a particular PCI bus.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
Mark Cave-Ayland (3):
pci: move check for existing devfn into new pci_bus_devfn_available()
helper
pci: add dev_reserved_mask property to PCIBus
pci: add reserved slot check to do_pci_register_device()
hw/pci/pci.c | 34 ++++++++++++++++++++++++++++++----
include/hw/pci/pci_bus.h | 1 +
2 files changed, 31 insertions(+), 4 deletions(-)
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1.7.10.4
