Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Changes from v11: https://lore.kernel.org/linux-pci/20230310123510.675685-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230413 - Based on the following cleanups patches: [PATCH v4 00/14] PCI: dwc: Relatively simple fixes and cleanups https://lore.kernel.org/linux-pci/20230414021832.13167-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ - Drop a fixed patch of pci-epf-test because I have submitted it independently. - Split patches about adding dw_pcie_link_set_max_* functions. - Split patches about modify __dw_pcie_prog_outbound_atu(). - Add description about num lanes into the commit log. - Add some macros into pci_regs.h and pci.h. - Add comment about disabling bars in pcie-rcar-gen4-host.c. - Set MAX_MSI_IRQS to num_vectors for handling 32 MSIs. - Add .ep_deinit(). - Add retrain link handling of PCIe Host mode for detecting PCIe Gen4. - Modify some minor things. Changes from v10: https://lore.kernel.org/linux-pci/20230308082352.491561-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Fix dt-bindings doc for endpoint (reported by Rob's bot). - Add reg and reg-names to the dt-bindings doc of host. - Fix examples in the dt-bindings docs of both host and endpoint. - Add R-Car S4-8 device ID into the pci_test_endpoint driver. 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. Yoshihiro Shimoda (19): PCI: Add PCI_EXP_LNKCAP_MLW macros PCI: Add INtx Mechanism Messages macros PCI: Add PCI_HEADER_TYPE_MULTI_FUNC PCI: dwc: Add dw_pcie_link_set_max_link_width() PCI: dwc: Add dw_pcie_link_set_max_width() PCI: dwc: Add dw_pcie_link_set_max_cap_width() PCI: dwc: Expose dw_pcie_ep_exit() to module PCI: dwc: Introduce struct dw_pcie_outbound_atu PCI: dwc: Add members into struct dw_pcie_outbound_atu PCI: dwc: Change arguments of dw_pcie_prog_ep_outbound_atu() PCI: dwc: Add support for triggering legacy IRQs PCI: dwc: Add EDMA_UNROLL capability flag PCI: dwc: Introduce .ep_pre_init() and .ep_deinit() dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint 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 misc: pci_endpoint_test: Add Device ID for R-Car S4-8 PCIe controller .../bindings/pci/rcar-gen4-pci-ep.yaml | 98 +++++++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 109 ++++++++++ MAINTAINERS | 1 + drivers/misc/pci_endpoint_test.c | 4 + drivers/pci/controller/dwc/Kconfig | 18 ++ drivers/pci/controller/dwc/Makefile | 4 + .../pci/controller/dwc/pcie-designware-ep.c | 93 ++++++-- drivers/pci/controller/dwc/pcie-designware.c | 201 +++++++++++------- drivers/pci/controller/dwc/pcie-designware.h | 27 ++- .../pci/controller/dwc/pcie-rcar-gen4-ep.c | 166 +++++++++++++++ .../pci/controller/dwc/pcie-rcar-gen4-host.c | 134 ++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.c | 187 ++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 49 +++++ include/linux/pci.h | 18 ++ include/uapi/linux/pci_regs.h | 7 + 15 files changed, 1020 insertions(+), 96 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
