Two fixes here:
1) Zero is a legal P2P bridge window base and BAR value and is likely to
occur when there is an offset between bus addresses and CPU addresses.
Stop disallowing it.
2) The Intel-specific 1K I/O window granularity for P2P bridges was
implemented in a way that precluded reassignment of the window after
FINAL quirks. Fix that.
And also replace the sparc pci_cfg_fake_ranges() with the functionally
equivalent generic version.
---
Bjorn Helgaas (3):
PCI: allow P2P bridge windows starting at PCI bus address zero
PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2)
sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases()
arch/sparc/kernel/pci.c | 89 +---------------------------------------------
drivers/pci/probe.c | 31 +++++++++-------
drivers/pci/quirks.c | 39 +-------------------
drivers/pci/setup-bus.c | 11 +++++-
include/linux/pci.h | 1 +
include/linux/pci_regs.h | 3 +-
6 files changed, 31 insertions(+), 143 deletions(-)
--
Bjorn
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