This v13 patch adds support for the Microchip PCIe PolarFire PCIe controller when configured in host (Root Complex) mode. Updates since v12: * Capitalised commit messages. Use specific subject line for dt-bindings Updates since v11: * Adjusted so yaml file passses make dt_binding_check Updates since v10: * Adjusted driver as per Rob Herring's comments, notably: - use common PCI_MSI_FLAGS defines - reduce storage of unnecessary vars in mc_pcie struct - switched to read/write relaxed variants - extended lock in msi_domain_alloc routine - improved 32bit safety, switched from find_first_bit() to ilog2() - removed unnecessary twiddle of eCAM config space Updates since v9: * Adjusted commit logs * make dt_bindings_check passes Updates since v8: * Refactored as per Rob Herring's comments: - bindings in schema format - Adjusted licence to GPLv2.0 - Refactored access to config space between driver and common eCAM code - Adopted pci_host_probe() - Miscellanous other improvements Updates since v7: * Build for 64bit RISCV architecture only Updates since v6: * Refactored to use common eCAM driver * Updated to CONFIG_PCIE_MICROCHIP_HOST etc * Formatting improvements * Removed code for selection between bridge 0 and 1 Updates since v5: * Fixed Kconfig typo noted by Randy Dunlap * Updated with comments from Bjorn Helgaas Updates since v4: * Fix compile issues. Updates since v3: * Update all references to Microsemi to Microchip * Separate MSI functionality from legacy PCIe interrupt handling functionality Updates since v2: * Split out DT bindings and Vendor ID updates into their own patch from PCIe driver. * Updated Change Log Updates since v1: * Incorporate feedback from Bjorn Helgaas Daire McNamara (2): dt-bindings: PCI: microchip: Add Microchip PolarFire host binding PCI: microchip: Add host driver for Microchip PCIe controller .../bindings/pci/microchip,pcie-host.yaml | 93 +++ drivers/pci/controller/Kconfig | 9 + drivers/pci/controller/Makefile | 1 + drivers/pci/controller/pcie-microchip-host.c | 683 ++++++++++++++++++ 4 files changed, 786 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml create mode 100644 drivers/pci/controller/pcie-microchip-host.c base-commit: cd77006e01b3198c75fb7819b3d0ff89709539bb -- 2.17.1
