The PFTF CM4 is an ACPI platform that is following the Arm PCIe SMC (DEN0115) standard because its PCIe config space isn't ECAM compliant since it is split into two parts. One part describes the root port registers, and another contains a moveable window pointing at a given device's 4K config space. Thus it doesn't have an MCFG table. As Linux doesn't support the PCI/SMC, a host bridge specific _DSD is added and associated with custom ECAM ops and cfgres. The custom cfg op selects between those two regions, as well as disallowing problematic accesses. V1->V2: Only move register definitions to new .h file, add include guards. Change quirk namespace identifier. Update Maintainers file. A number of whitespace, grammar, etc fixes. Jeremy Linton (4): PCI: brcmstb: Break register definitions into separate header PCI: brcmstb: Add ACPI config space quirk PCI/ACPI: Add Broadcom bcm2711 MCFG quirk MAINTAINERS: Widen brcmstb PCIe file scope MAINTAINERS | 2 +- drivers/acpi/pci_mcfg.c | 13 ++ drivers/pci/controller/Makefile | 1 + drivers/pci/controller/pcie-brcmstb-acpi.c | 74 ++++++++++ drivers/pci/controller/pcie-brcmstb.c | 150 +------------------- drivers/pci/controller/pcie-brcmstb.h | 155 +++++++++++++++++++++ include/linux/pci-ecam.h | 1 + 7 files changed, 247 insertions(+), 149 deletions(-) create mode 100644 drivers/pci/controller/pcie-brcmstb-acpi.c create mode 100644 drivers/pci/controller/pcie-brcmstb.h -- 2.31.1
