• Gavin Shan's avatar
    powerpc/powernv: Create bus sensitive PEs · fb446ad0
    Gavin Shan authored
    Basically, there're 2 types of PCI bus sensitive PEs: (A) The PE
    includes single PCI bus. (B) The PE includes the PCI bus and all
    the subordinate PCI buses. At present, we'd like to put PCI bus
    originated by PCI-e link to form PE that contains single PCI bus,
    and the PCIe-to-PCI bridge will form the 2nd type of PE. We don't
    figure out to detect PLX bridge yet. Once we can detect PLX bridge
    some day, we have to put PCI buses originated from the downstream
    port of PLX bridge to the 2nd type of PE.
    The patch changes the original implementation for a little bit
    to support 2 types of PCI bus sensitive PEs described as above.
    Also, the function used to retrieve the corresponding PE according
    to the given PCI device has been changed based on that because each
    PCI device should trace the directly associated PE.
    Signed-off-by: default avatarGavin Shan <shangw@linux.vnet.ibm.com>
    Reviewed-by: default avatarRam Pai <linuxram@us.ibm.com>
    Reviewed-by: default avatarRichard Yang <weiyang@linux.vnet.ibm.com>
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>