[edk2-devel] [PATCH v5 1/6] MdeModulePkg/PciHostBridge: io range is not mandatory

[Gerd Hoffmann]

  Hi,

> If IO requirement of certain PCI(E) devices can be ignored, can you change the IncompatiblePciDevice protocol implementation to override the IO request from the devices?

Hmm, how can the IncompatiblePciDevice protocol specify that IO bars
should be ignored?

Seems I can override the size using
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR.AddrLen.  I can't set the length to
zero though because setting AddrLen to 0 means "no overide".

Is there another way to have edk2 ignore an PCI bar?  The spec isn't
verbose here (looking at PI spec 1.7a, table 5-20).

thanks,
  Gerd



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