Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Changes from v4: https://lore.kernel.org/all/20220722110744.2274466-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Rebased on next-20220901. -- And based on the following patches: [PATCH v5 00/20] PCI: dwc: Add generic resources and Baikal-T1 support https://lore.kernel.org/linux-pci/20220822184701.25246-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ [PATCH RESEND v5 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support https://lore.kernel.org/dmaengine/20220822185332.26149-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ - Notes that snps,dw-pcie-common.yaml modification seems under construction so that dt-bindings of R-Car Gen4 is based on next-20220901. Yoshihiro Shimoda (12): dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint PCI: Add PCI_EXP_LNKCAP_MLW macros PCI: controller: dwc: Expose dw_pcie_ep_exit() to module PCI: dwc: Add ep_pre_init() callback to dw_pcie_ep_ops PCI: dwc: Add reset_all_bars flag PCI: dwc: Avoid reading a register to detect whether eDMA exists PCI: renesas: Add R-Car Gen4 PCIe Host support PCI: renesas: Add R-Car Gen4 PCIe Endpoint support MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4 arm64: dts: renesas: r8a779f0: Add PCIe Host and Endpoint nodes arm64: dts: renesas: r8a779f0: spider: Enable PCIe Host ch0 .../bindings/pci/rcar-gen4-pci-ep.yaml | 99 +++++++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 97 +++++++++ MAINTAINERS | 1 + .../boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 39 ++++ arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 122 +++++++++++ drivers/pci/controller/dwc/Kconfig | 18 ++ drivers/pci/controller/dwc/Makefile | 4 + .../pci/controller/dwc/pcie-designware-ep.c | 14 ++ drivers/pci/controller/dwc/pcie-designware.c | 4 +- drivers/pci/controller/dwc/pcie-designware.h | 2 + .../pci/controller/dwc/pcie-rcar-gen4-ep.c | 182 ++++++++++++++++ .../pci/controller/dwc/pcie-rcar-gen4-host.c | 195 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.c | 181 ++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 63 ++++++ include/uapi/linux/pci_regs.h | 7 + 15 files changed, 1026 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml create mode 100644 Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-ep.c create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4-host.c create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.c create mode 100644 drivers/pci/controller/dwc/pcie-rcar-gen4.h -- 2.25.1
