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[v7,0/9] PCI: rcar-gen4: Add R-Car Gen4 PCIe support

Message ID 20221121124400.1282768-1-yoshihiro.shimoda.uh@renesas.com
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Series PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand

Message

Yoshihiro Shimoda Nov. 21, 2022, 12:43 p.m. UTC 
Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support.
To support them, modify PCIe DesignWare common codes.

Changes from v6:
 https://lore.kernel.org/all/20220922080647.3489791-1-yoshihiro.shimoda.uh@renesas.com/
 - Based on next-20221116.
 -- And based on the following patches:
    [PATCH v7 00/20] PCI: dwc: Add generic resources and Baikal-T1 support
    https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/
    [PATCH v6 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support
    https://lore.kernel.org/linux-pci/20221107210438.1515-1-Sergey.Semin@baikalelectronics.ru/
 - Update dt-bindings docs for the latest based code.
 - Add support for triggering legacy IRQs in the patch [06/10] (new).
 - Add .no_msix flag into the patch [07/10].
 - Merge .ep_pre_init() support into the patch [08/10].
 - Add .reserved_bar for BAR5 instead in the patch [08/10].
 - Change SPDX-License-Identifier from "GPL-2.0" to "GPL-2.0-only".

Changes from v5:
 https://lore.kernel.org/all/20220905071257.1059436-1-yoshihiro.shimoda.uh@renesas.com/
 - No treewide patches.
 - Drop PCI_EXP_LNKCAP_MLW_X32 in patch [03/10].
 - Add Acked-by in patch [03/10].
 - Fix subject prefix in patch [04/10], [05/10], [08/10] and [09/10].
 - Fix typo in patch [05/10] and [07/10].

Yoshihiro Shimoda (9):
  dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host
  dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint
  PCI: Add PCI_EXP_LNKCAP_MLW macros
  PCI: designware-ep: Expose dw_pcie_ep_exit() to module
  PCI: dwc: Avoid reading a register to detect whether eDMA exists
  PCI: dwc: Add support for triggering legacy IRQs
  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

 .../bindings/pci/rcar-gen4-pci-ep.yaml        |  90 +++++++++
 .../bindings/pci/rcar-gen4-pci-host.yaml      |  90 +++++++++
 MAINTAINERS                                   |   1 +
 drivers/pci/controller/dwc/Kconfig            |  18 ++
 drivers/pci/controller/dwc/Makefile           |   4 +
 .../pci/controller/dwc/pcie-designware-ep.c   |  70 ++++++-
 .../pci/controller/dwc/pcie-designware-host.c |   3 +
 drivers/pci/controller/dwc/pcie-designware.c  |  29 ++-
 drivers/pci/controller/dwc/pcie-designware.h  |  14 +-
 .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 182 +++++++++++++++++
 .../pci/controller/dwc/pcie-rcar-gen4-host.c  | 190 ++++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.c   | 181 +++++++++++++++++
 drivers/pci/controller/dwc/pcie-rcar-gen4.h   |  63 ++++++
 include/uapi/linux/pci_regs.h                 |   6 +
 14 files changed, 923 insertions(+), 18 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