[cip-dev] [RFC PATCH 4.19.y-cip 00/50] Add PCIe EP support for Renesas R-Car Gen3 and RZ/G2x

From: "Lad Prabhakar" <prabhakar.mahadev-lad.rj@bp.renesas.com>
To: cip-dev@lists.cip-project.org,
	Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>,
	Pavel Machek <pavel@denx.de>
Cc: Biju Das <biju.das.jz@bp.renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [cip-dev] [RFC PATCH 4.19.y-cip 00/50] Add PCIe EP support for Renesas R-Car Gen3 and RZ/G2x
Date: Mon, 12 Oct 2020 15:18:43 +0100	[thread overview]
Message-ID: <20201012141933.9652-1-prabhakar.mahadev-lad.rj@bp.renesas.com> (raw)

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Hi All,

This patch series adds support for PCIe EP on Renesas R-Car Gen3 and
RZ/G2x platforms.

* Required EP framework changes and fixes are ported as well.
* All the patches have been cheery picked from upstream kernel.
* Patches [43, 44, 45, 46, 48]/50 are picked from linux-next.
* I was skeptic with patch 36/50 "Rename pcie-rcar.c to pcie-rcar-host.c"
  this is required as patch 38/50 adds a new file named pcie-rcar.c. Open
  for suggestions if this can be handled differently.
* In patch 37/48 I have dropped the changes for host driver as the patch
  doesn't apply cleanly and manually applying it was resulting in a big diff.
* As the changes touches three other controller drivers I have build tested them
  as done similarly while upstreaming R-Car Gen3 PCIe EP driver.
* Since the changes are huge I am sending the patches as RFC.

Cheers,
Prabhakar

Alan Mikhak (5):
  PCI: endpoint: Set endpoint controller pointer to NULL
  PCI: endpoint: Allocate enough space for fixed size BAR
  PCI: endpoint: Skip odd BAR when skipping 64bit BAR
  PCI: endpoint: Clear BAR before freeing its space
  PCI: endpoint: Cast the page number to phys_addr_t

Hewenliang (1):
  tools: PCI: Fix fd leakage

Jean-Jacques Hiblot (1):
  tools: PCI: Exit with error code when test fails

Kangjie Lu (1):
  PCI: endpoint: Fix a potential NULL pointer dereference

Kishon Vijay Abraham I (23):
  PCI: endpoint: Add new pci_epc_ops to get EPC features
  PCI: dwc: Add ->get_features() callback function to dw_pcie_ep_ops
  PCI: designware-plat: Populate ->get_features() dw_pcie_ep_ops
  PCI: pci-dra7xx: Populate ->get_features() dw_pcie_ep_ops
  PCI: rockchip: Populate ->get_features() dw_pcie_ep_ops
  PCI: cadence: Populate ->get_features() cdns_pcie_epc_ops
  PCI: endpoint: Add helper to get first unreserved BAR
  PCI: endpoint: Fix pci_epf_alloc_space() to set correct MEM TYPE flags
  PCI: pci-epf-test: Remove setting epf_bar flags in function driver
  PCI: pci-epf-test: Do not allocate next BARs memory if current BAR is
    64Bit
  PCI: pci-epf-test: Use pci_epc_get_features() to get EPC features
  PCI: cadence: Remove pci_epf_linkup() from Cadence EP driver
  PCI: rockchip: Remove pci_epf_linkup() from Rockchip EP driver
  PCI: designware-plat: Remove setting epc->features in Designware plat
    EP driver
  PCI: endpoint: Remove features member in struct pci_epc
  PCI: endpoint: Add support to specify alignment for buffers allocated
    to BARs
  PCI: endpoint: Use notification chain mechanism to notify EPC events
    to EPF
  PCI: endpoint: Replace spinlock with mutex
  PCI: endpoint: Protect concurrent access to pci_epf_ops with mutex
  PCI: endpoint: Assign function number for each PF in EPC core
  PCI: endpoint: Fix ->set_msix() to take BIR and offset as arguments
  PCI: dwc: Fix dw_pcie_ep_raise_msix_irq() to get correct MSI-X table
    address
  PCI: endpoint: functions/pci-epf-test: Print throughput information

Kunihiko Hayashi (1):
  PCI: endpoint: Fix clearing start entry in configfs

Lad Prabhakar (15):
  PCI: endpoint: Pass page size as argument to pci_epc_mem_init()
  PCI: endpoint: Add support to handle multiple base for mapping
    outbound memory
  PCI: rcar: Rename pcie-rcar.c to pcie-rcar-host.c
  arm64: defconfig: Enable CONFIG_PCIE_RCAR_HOST
  PCI: rcar: Move shareable code to a common file
  PCI: rcar: Fix calculating mask for PCIEPAMR register
  dt-bindings: PCI: rcar: Add bindings for R-Car PCIe endpoint
    controller
  PCI: rcar: Add endpoint mode support
  arm64: defconfig: Enable R-Car PCIe endpoint driver
  dt-bindings: pci: rcar-pci-ep: Document r8a774a1 and r8a774b1
  arm64: dts: renesas: r8a774c0: Add PCIe EP node
  arm64: dts: renesas: r8a774a1: Add PCIe EP nodes
  arm64: dts: renesas: r8a774b1: Add PCIe EP nodes
  misc: pci_endpoint_test: Add Device ID for RZ/G2E PCIe controller
  misc: pci_endpoint_test: Add Device ID for RZ/G2M and RZ/G2N PCIe
    controllers

Vidya Sagar (3):
  PCI: endpoint: Add core init notifying feature
  PCI: endpoint: Add notification for core init completion
  PCI: pci-epf-test: Add support to defer core initialization

 .../devicetree/bindings/pci/rcar-pci-ep.yaml  |   80 ++
 arch/arm64/boot/dts/renesas/r8a774a1.dtsi     |   38 +
 arch/arm64/boot/dts/renesas/r8a774b1.dtsi     |   38 +
 arch/arm64/boot/dts/renesas/r8a774c0.dtsi     |   19 +
 arch/arm64/configs/defconfig                  |    7 +-
 drivers/misc/pci_endpoint_test.c              |    7 +
 drivers/pci/controller/Kconfig                |   18 +
 drivers/pci/controller/Makefile               |    3 +-
 drivers/pci/controller/dwc/pci-dra7xx.c       |   13 +
 .../pci/controller/dwc/pcie-designware-ep.c   |   39 +-
 .../pci/controller/dwc/pcie-designware-plat.c |   17 +-
 drivers/pci/controller/dwc/pcie-designware.h  |    1 +
 drivers/pci/controller/pcie-cadence-ep.c      |   27 +-
 drivers/pci/controller/pcie-rcar-ep.c         |  563 ++++++++
 drivers/pci/controller/pcie-rcar-host.c       | 1264 +++++++++++++++++
 drivers/pci/controller/pcie-rcar.c            | 1224 +---------------
 drivers/pci/controller/pcie-rcar.h            |  140 ++
 drivers/pci/controller/pcie-rockchip-ep.c     |   18 +-
 drivers/pci/endpoint/functions/pci-epf-test.c |  295 +++-
 drivers/pci/endpoint/pci-ep-cfs.c             |   28 +-
 drivers/pci/endpoint/pci-epc-core.c           |  187 ++-
 drivers/pci/endpoint/pci-epc-mem.c            |  204 ++-
 drivers/pci/endpoint/pci-epf-core.c           |   49 +-
 include/linux/pci-epc.h                       |   95 +-
 include/linux/pci-epf.h                       |   32 +-
 tools/pci/pcitest.c                           |    5 +-
 26 files changed, 2919 insertions(+), 1492 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml
 create mode 100644 drivers/pci/controller/pcie-rcar-ep.c
 create mode 100644 drivers/pci/controller/pcie-rcar-host.c
 create mode 100644 drivers/pci/controller/pcie-rcar.h

-- 
2.17.1

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