Add R-Car S4-8 (R-Car Gen4) PCIe controller for both host and endpoint modes. To support them, modify PCIe DesignWare common codes. Changes from v22: https://lore.kernel.org/linux-pci/20230925072130.3901087-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on the latest pci.git / next branch. - Add Reviewed-by in the patch 12/16. - Move a few endpoint related code from the patch 13/16 to 14/16. - Change subjects in the patch 1[34]/16. - Modify the code for readability in the patch 14/16. Changes from v21: https://lore.kernel.org/linux-pci/20230922065331.3806925-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on the latest pci.git / next branch. - Fix -Wmissing-prototypes warnings that was reported by kernel test robot: https://lore.kernel.org/linux-pci/202309222125.KiN4nFhD-lkp@xxxxxxxxx/ Changes from v20 + squash patches: https://lore.kernel.org/linux-pci/20230825093219.2685912-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ https://lore.kernel.org/linux-pci/20230901131711.2861283-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on the latest pci.git / next branch. - Cherry-picked almost all patches from the pci.git / controller/rcar branch for squashing. - But, drop the following patches which are related to INTx. eb185e1e628a PCI: designware-ep: Add INTx IRQs support 5d0e51f85b23 PCI: dwc: Add outbound MSG TLPs support 4758bef61cc2 PCI: dwc: Change arguments of dw_pcie_prog_outbound_atu() 44938b13046b PCI: Add INTx Mechanism Messages macros - Add a new macro T_PVPERL in the patch 12/16. - Merge pcie-rcar-gen4-{ep,host}-drv.c and pcie-rcar-gen4.h files into pcie-rcar-gen4.c. - Add CONFIG_PCIE_RCAR_GEN4_HOST config. - Fix some comments. - Change return type of rcar_gen4_pcie_speed_change(). - Add registers' full names as comments. - Rename function names of rcar_gen4_{add,remove}_pcie_ep() to rcar_gen4_{add,remove}_dw_pcie_ep() for consistency. Yoshihiro Shimoda (16): PCI: dwc: endpoint: Add multiple PFs support for dbi2 PCI: dwc: Add dw_pcie_link_set_max_link_width() PCI: dwc: Add missing 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: Expose dw_pcie_write_dbi2() to module PCI: dwc: endpoint: Introduce .pre_init() and .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: add T_PVPERL macro PCI: dwc: rcar-gen4: Add R-Car Gen4 PCIe controller support for host mode PCI: dwc: rcar-gen4: Add endpoint mode 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 | 115 ++++ .../bindings/pci/rcar-gen4-pci-host.yaml | 127 +++++ .../bindings/pci/snps,dw-pcie-common.yaml | 4 +- .../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 + drivers/pci/controller/dwc/Kconfig | 25 + drivers/pci/controller/dwc/Makefile | 1 + .../pci/controller/dwc/pcie-designware-ep.c | 45 +- drivers/pci/controller/dwc/pcie-designware.c | 102 ++-- drivers/pci/controller/dwc/pcie-designware.h | 8 +- drivers/pci/controller/dwc/pcie-rcar-gen4.c | 526 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-tegra194.c | 6 - drivers/pci/pci.h | 3 + 15 files changed, 906 insertions(+), 69 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.c -- 2.25.1
