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[v6,00/10] PCI: rcar-gen4: Add R-Car Gen4 PCIe support

Message ID 20220922080647.3489791-1-yoshihiro.shimoda.uh@renesas.com
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Series PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand

Message

Yoshihiro Shimoda Sept. 22, 2022, 8:06 a.m. UTC 
Add R-Car S4-8 (R-Car Gen4) PCIe Host and Endpoint support.
To support them, modify PCIe DesignWare common codes.
Base kernel is the same as v5.

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].

Changes from v4:
 https://lore.kernel.org/all/20220722110744.2274466-1-yoshihiro.shimoda.uh@renesas.com/
 - Rebased on next-20220901.
 -- And based on the following patches:
    [PATCH v5 00/20] PCI: dwc: Add generic resources and Baikal-T1 support
    https://lore.kernel.org/linux-pci/20220822184701.25246-1-Sergey.Semin@baikalelectronics.ru/
    [PATCH RESEND v5 00/24] dmaengine: dw-edma: Add RP/EP local DMA controllers support
    https://lore.kernel.org/dmaengine/20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru/
 - Notes that snps,dw-pcie-common.yaml modification seems under construction
   so that dt-bindings of R-Car Gen4 is based on next-20220901.

Yoshihiro Shimoda (10):
  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: designware-ep: Add ep_pre_init() callback to dw_pcie_ep_ops
  PCI: dwc: Add reset_all_bars flag
  PCI: dwc: Avoid reading a register to detect whether eDMA exists
  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        |  99 +++++++++
 .../bindings/pci/rcar-gen4-pci-host.yaml      |  97 +++++++++
 MAINTAINERS                                   |   1 +
 drivers/pci/controller/dwc/Kconfig            |  18 ++
 drivers/pci/controller/dwc/Makefile           |   4 +
 .../pci/controller/dwc/pcie-designware-ep.c   |  14 ++
 drivers/pci/controller/dwc/pcie-designware.c  |   4 +-
 drivers/pci/controller/dwc/pcie-designware.h  |   2 +
 .../pci/controller/dwc/pcie-rcar-gen4-ep.c    | 182 ++++++++++++++++
 .../pci/controller/dwc/pcie-rcar-gen4-host.c  | 195 ++++++++++++++++++
 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 +
 13 files changed, 864 insertions(+), 2 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