• Benjamin Herrenschmidt's avatar
    powerpc/pci: Change how re-assigning resouces work · 48c2ce97
    Benjamin Herrenschmidt authored
    When PCI_REASSIGN_ALL_RSRC is set, we used to clear all bus resources
    at the beginning of survey and re-allocate them later.
    
    This changes it so instead, during early fixup, we mark all resources
    as IORESOURCE_UNSET and move them down to be 0-based.
    
    Later, if bus resources are still unset at the beginning of the survey,
    then we clear them.
    
    This shouldn't impact the re-assignment case on 4xx, but will enable
    us to have the platform do some custom resource assignment before the
    survey, by clearing individual resources IORESOURCE_UNSET bit.
    
    Also limits the clutter in the kernel log from fixup when re-assigning
    since we don't care about the offset applied to the BAR values in this
    case.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    48c2ce97
pci-common.c 50 KB