[PATCH v18 00/20] PCI: rcar-gen4: Add R-Car Gen4 PCIe support

[Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>]

Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support.
To support them, modify PCIe DesignWare common codes.

Changes from v17:
https://lore.kernel.org/linux-pci/20230705114206.3585188-1-yoshihiro.shimoda.uh@renesas.com/
 - Based on the latest pci.git / next branch.
 - Add comments in the commit log in the patch 01/20.
 - Drop "Implicit" from "Message Routing" in the patch 01/20.
 - Add Reviewed-by tag in the patch 0[14569]/20.
 - Fix typo in the patch 07/20.
 - Drop unnecessary description from the commit log in the patch 09/20.
 - Add clk_bulk_disable_unprepare() calling in the patch 1[78]/20.
 - Use .remove_new() in the patch 1[78]/20.
 - Add rcar_gen4_pcie_basic_deinit() and .deinit() in the patch 17/20.
 - Call rcar_gen4_pcie_basic_deinit() in .ep_deinit() in the patch 18/20.
 - Minor updates for improved code readability in the patch 1[78]/20.

Changes from v16:
https://lore.kernel.org/linux-pci/20230510062234.201499-1-yoshihiro.shimoda.uh@renesas.com/
 - 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].

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    | 189 +++++++++++++++++
 .../pci/controller/dwc/pcie-rcar-gen4-host.c  | 149 +++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   | 200 ++++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.h   |  44 ++++
 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, 1134 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