Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Changes from v12: https://lore.kernel.org/linux-pci/20230414061622.2930995-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230414 - (no change, JFYI) 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/ - Use PCI_HEADER_TYPE_MULTI_FUNC on probe.c and quirks.c. - Rename "Legacy IRQ" with "INTx". - Change order of patches. (INTx related patches at first.) - Change maxItems of reg and reg-names on the dt-bindings doc. - Fix minor typos. - Change waiting period in the INTx function and add comment. 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. Yoshihiro Shimoda (22): PCI: Add PCI_EXP_LNKCAP_MLW macros PCI: Add PCI_HEADER_TYPE_MULTI_FUNC PCI: Add INTx Mechanism Messages macros PCI: Rename PCI_EPC_IRQ_LEGACY with PCI_EPC_IRQ_INTX PCI: dwc: Rename with dw_pcie_ep_raise_intx_irq() 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 INTx IRQs 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: Add EDMA_UNROLL capability flag PCI: dwc: Expose dw_pcie_ep_exit() to module PCI: dwc: Introduce .ep_pre_init() and .ep_deinit() dt-bindings: PCI: dwc: Update maxItems of reg and reg-names 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 ++++++++++ .../bindings/pci/snps,dw-pcie-ep.yaml | 4 +- .../devicetree/bindings/pci/snps,dw-pcie.yaml | 4 +- MAINTAINERS | 1 + drivers/misc/pci_endpoint_test.c | 4 + .../pci/controller/cadence/pcie-cadence-ep.c | 2 +- drivers/pci/controller/dwc/Kconfig | 18 ++ drivers/pci/controller/dwc/Makefile | 4 + drivers/pci/controller/dwc/pci-dra7xx.c | 2 +- drivers/pci/controller/dwc/pci-imx6.c | 4 +- drivers/pci/controller/dwc/pci-keystone.c | 2 +- .../pci/controller/dwc/pci-layerscape-ep.c | 4 +- drivers/pci/controller/dwc/pcie-artpec6.c | 2 +- .../pci/controller/dwc/pcie-designware-ep.c | 103 +++++++-- .../pci/controller/dwc/pcie-designware-plat.c | 4 +- drivers/pci/controller/dwc/pcie-designware.c | 201 +++++++++++------- drivers/pci/controller/dwc/pcie-designware.h | 31 ++- drivers/pci/controller/dwc/pcie-keembay.c | 2 +- drivers/pci/controller/dwc/pcie-qcom-ep.c | 4 +- .../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 +++++ drivers/pci/controller/dwc/pcie-tegra194.c | 2 +- drivers/pci/controller/dwc/pcie-uniphier-ep.c | 2 +- drivers/pci/controller/pcie-rcar-ep.c | 2 +- drivers/pci/controller/pcie-rockchip-ep.c | 2 +- drivers/pci/endpoint/functions/pci-epf-test.c | 12 +- drivers/pci/pci.h | 19 ++ drivers/pci/probe.c | 2 +- drivers/pci/quirks.c | 4 +- include/linux/pci-epc.h | 4 +- include/uapi/linux/pci_regs.h | 7 + 34 files changed, 1063 insertions(+), 132 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
