Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Patch [1/12] and [2/12] are bug fix patches. Changes from v9: https://lore.kernel.org/linux-pci/20230210134917.2909314-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230306 - Add bug fix patches into this patch series. https://lore.kernel.org/linux-pci/20230216092012.3256440-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ https://lore.kernel.org/linux-pci/20230222015327.3585691-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Add maximum for max-link-speed and num-lanes to dt-bindings of both host and endpoint. - Add max-functions to dt-bindings of endpoint. - Use reg-names "app" on endpoint. - Remove unnecessary linkup and wait process in rcar_gen4_pcie_host_init(). - Remove unnecessary macros in pcie-rcar-gen4.h. - Use dbi2 to write BAR mask registers. - Remove no_msix and intx_by_atu flags. - Reduce __dw_pcie_prog_outbound_atu() arguments. - Add dw_pcie_num_lanes_setup() to setup num_lanes. - Refactor dw_pcie_setup() to avoid PCIE_PORT_LINK_CONTROL writing twice. Changes from v8: https://lore.kernel.org/all/20230131095543.1831875-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230210. - Missing dt-bindings patches accidentally. Yoshihiro Shimoda (12): PCI: dwc: Fix writing wrong value if snps,enable-cdm-check PCI: endpoint: functions/pci-epf-test: Fix dma_chan direction dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint PCI: dwc: Refactor PCIE_PORT_LINK_CONTROL handling PCI: Add PCI_EXP_LNKCAP_MLW macros PCI: designware-ep: Expose dw_pcie_ep_exit() to module PCI: dwc: Add dw_pcie_num_lanes_setup() PCI: dwc: Add support for triggering legacy IRQs PCI: rcar-gen4: Add R-Car Gen4 PCIe Host support PCI: rcar-gen4-ep: Add R-Car Gen4 PCIe Endpoint support MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4 .../bindings/pci/rcar-gen4-pci-ep.yaml | 95 ++++++++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 96 ++++++++++ MAINTAINERS | 1 + drivers/pci/controller/dwc/Kconfig | 18 ++ drivers/pci/controller/dwc/Makefile | 4 + .../pci/controller/dwc/pcie-designware-ep.c | 70 +++++++- drivers/pci/controller/dwc/pcie-designware.c | 130 +++++++++----- drivers/pci/controller/dwc/pcie-designware.h | 18 +- .../pci/controller/dwc/pcie-rcar-gen4-ep.c | 170 ++++++++++++++++++ .../pci/controller/dwc/pcie-rcar-gen4-host.c | 134 ++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.c | 156 ++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 56 ++++++ drivers/pci/controller/dwc/pcie-tegra194.c | 5 +- drivers/pci/endpoint/functions/pci-epf-test.c | 2 +- include/uapi/linux/pci_regs.h | 6 + 15 files changed, 901 insertions(+), 60 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
