Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Changes from v15: https://lore.kernel.org/linux-pci/20230509124156.150200-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230509 + pci.git / next branch (the commit 174977dc80b7 ("Merge branch 'pci/controller/vmd'")) - (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/ - Modify the code comments in patch 8/22. Changes from v14: https://lore.kernel.org/linux-pci/20230426045557.3613826-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230508. - (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/ - Add Reviewed-by from Serge in the patch {4,5,15,}/21. - Drop PCI_EXP_LNKCAP_MLW handling of pcie-tegra194.c because pcie-designware.c takes care of it. - Change subjects in the patch {5,6,7,8,10}/21. - Drop dw_pcie_prog_ep_outbound_atu(). - Modify dw_pcie_link_set_max_link_width() to improve code readability. - Move the retrain code to .start_link(). - Fix some minor issues. 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 to PCI_EPC_IRQ_INTX PCI: dwc: Rename "legacy_irq" to "INTx_irq" PCI: dwc: Change arguments of dw_pcie_prog_outbound_atu() PCI: dwc: Add outbound MSG TLPs support PCI: designware-ep: Add INTx IRQs support PCI: dwc: Add dw_pcie_link_set_max_link_width() PCI: dwc: Modify PCIE_PORT_LINK_CONTROL handling PCI: dwc: Add dw_pcie_link_set_max_cap_width() PCI: tegra194: Drop PCI_EXP_LNKSTA_NLW setting. 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 | 98 +++++++-- .../pci/controller/dwc/pcie-designware-host.c | 52 +++-- .../pci/controller/dwc/pcie-designware-plat.c | 4 +- drivers/pci/controller/dwc/pcie-designware.c | 160 ++++++++------- drivers/pci/controller/dwc/pcie-designware.h | 33 ++- 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 | 141 +++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.c | 190 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 46 +++++ drivers/pci/controller/dwc/pcie-tegra194.c | 8 +- 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 | 10 +- drivers/pci/pci.h | 18 ++ drivers/pci/probe.c | 2 +- drivers/pci/quirks.c | 4 +- include/linux/pci-epc.h | 4 +- include/uapi/linux/pci_regs.h | 7 + 35 files changed, 1061 insertions(+), 152 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
