Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support. To support them, modify PCIe DesignWare common codes. Changes from v16: https://lore.kernel.org/linux-pci/20230510062234.201499-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on next-20230704. - Drop a patch about PCI_EXP_LNKCAP_MLW. - Drop a patch about PCI_HEADER_TYPE_MULTI_FUNC. - Update comments in the patch [01/20]. - Drop CC-list from actual commit log in the patch [02/20]. - Update the commit log in the patch [04/20]. - Remove unnecessary bit setting in the patch [05/20]. - (New) Add .func_conf_select2() ops for multiple PFs support in the patch [07/20]. - Modify dw_pcie_link_set_max_link_width() refactoring in the patch [08/20]. - Use FIELD_PREP() to improve code readability in the patch [09/20]. - Add Reviewed-by in the patch [1[02]/20] (Thanks, Serge!). - Minor fix of the commit log in the patch [11/20]. - Add clock-names property in the patch [1[56]/20]. - Add max-functions property in the patch [16/20]. - Drop unnecessary dw_pcie_dbi_ro_wr_en() in the patch [17/20]. - Modify .stark_link() handling in the patch [17/20]. - Change function name of rcar_gen4_pcie_set_device_type() in the patch [17/20]. - Modify reset/clock handling in the patch [17/20]. - Add enum dw_pcie_device_mode handling in the patch [17/20]. - Drop single-function setting in the patch [18/20]. - Add multi PFs support in the patch [18/20]. - Fix .reserved_bar value in the patch [18/20]. 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 (20): 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: endpoint: Add multiple PFs support for dbi2 PCI: dwc: Add dw_pcie_link_set_max_link_width() PCI: dwc: Add PCI_EXP_LNKCAP_MLW handling 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 | 106 ++++++++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 123 +++++++++++ .../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 | 133 ++++++++++-- .../pci/controller/dwc/pcie-designware-host.c | 52 +++-- .../pci/controller/dwc/pcie-designware-plat.c | 4 +- drivers/pci/controller/dwc/pcie-designware.c | 155 +++++++------- drivers/pci/controller/dwc/pcie-designware.h | 35 +++- 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 | 191 +++++++++++++++++ .../pci/controller/dwc/pcie-rcar-gen4-host.c | 144 +++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.c | 197 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-rcar-gen4.h | 43 ++++ 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 ++ include/linux/pci-epc.h | 4 +- 32 files changed, 1127 insertions(+), 159 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
