linux-kernel - [PATCH 0/5] Add support for PCIe controller to work in endpoint mode on R-Car SoCs.

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Message-Id: <20191106193609.19645-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Wed,  6 Nov 2019 19:36:04 +0000
From:   Lad Prabhakar <prabhakar.csengg@...il.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Marek Vasut <marek.vasut+renesas@...il.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        linux-pci@...r.kernel.org
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Murray <andrew.murray@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        "Lad, Prabhakar" <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 0/5] Add support for PCIe controller to work in endpoint mode on R-Car SoCs.

From: "Lad, Prabhakar" <prabhakar.mahadev-lad.rj@...renesas.com>

This patch series adds support for PCIe controller on rcar to work in endpoint mode,
this also extends the epf framework to handle multiple outbound regions.

Note: 
The cadence/rockchip/designware endpoint drivers are build tested only.

Endpoint configuration:
$ cd /sys/kernel/config/pci_ep
$ mkdir functions/pci_epf_test/func1
$ echo 0x1912 > functions/pci_epf_test/func1/vendorid
$ echo 0x002d > functions/pci_epf_test/func1/deviceid
$ echo 32 > functions/pci_epf_test/func1/msi_interrupts
$ ln -s functions/pci_epf_test/func1/ controllers/fe000000.pcie_ep/
$ echo 1 > controllers/fe000000.pcie_ep/start

Host side results:
lspci output:
01:00.0 Unassigned class [ff00]: Renesas Technology Corp. Device 002d
        Flags: bus master, fast devsel, latency 0, IRQ 103
        Memory at fe200200 (64-bit, non-prefetchable) [size=128]
        Memory at fe200000 (64-bit, non-prefetchable) [size=256]
        Memory at fe200100 (64-bit, non-prefetchable) [size=256]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
        Capabilities: [70] Express Endpoint, MSI 00
        Capabilities: [100] Virtual Channel
        Kernel driver in use: pci-endpoint-test

pcitest results:

BAR tests

BAR0:           OKAY
BAR1:           NOT OKAY
BAR2:           OKAY
BAR3:           NOT OKAY
BAR4:           OKAY
BAR5:           NOT OKAY

Interrupt tests

SET IRQ TYPE TO LEGACY:         OKAY
LEGACY IRQ:     OKAY
Read Tests

SET IRQ TYPE TO LEGACY:         OKAY
READ (      1 bytes):           OKAY
READ (   1024 bytes):           OKAY
READ (   1025 bytes):           OKAY
READ (1024000 bytes):           OKAY
READ (1024001 bytes):           OKAY

Write Tests

WRITE (      1 bytes):          OKAY
WRITE (   1024 bytes):          OKAY
WRITE (   1025 bytes):          OKAY
WRITE (1024000 bytes):          OKAY
WRITE (1024001 bytes):          OKAY

Copy Tests

COPY (      1 bytes):           OKAY
COPY (   1024 bytes):           OKAY
COPY (   1025 bytes):           OKAY
COPY (1024000 bytes):           OKAY
COPY (1024001 bytes):           OKAY

BAR tests for 1/3/5 fail because its configured to use 64bit bars

Lad, Prabhakar (5):
  pci: pcie-rcar: preparation for adding endpoint support
  pci: endpoint: add support to handle multiple base for mapping
    outbound memory
  PCI: rcar: Add R-Car PCIe endpoint device tree bindings
  pci: rcar: add support for rcar pcie controller in endpoint mode
  misc: pci_endpoint_test: add device-id for RZ/G2 pcie controller

 .../devicetree/bindings/pci/rcar-pci-ep.txt   |   43 +
 arch/arm64/configs/defconfig                  |    2 +-
 arch/arm64/configs/renesas_defconfig          |    2 +-
 drivers/misc/pci_endpoint_test.c              |    3 +
 drivers/pci/controller/Kconfig                |   11 +-
 drivers/pci/controller/Makefile               |    3 +-
 .../pci/controller/dwc/pcie-designware-ep.c   |   30 +-
 drivers/pci/controller/pcie-cadence-ep.c      |   11 +-
 drivers/pci/controller/pcie-rcar-ep.c         |  483 +++++++
 drivers/pci/controller/pcie-rcar-host.c       | 1058 ++++++++++++++
 drivers/pci/controller/pcie-rcar.c            | 1231 +----------------
 drivers/pci/controller/pcie-rcar.h            |  129 ++
 drivers/pci/controller/pcie-rockchip-ep.c     |   13 +-
 drivers/pci/endpoint/functions/pci-epf-test.c |   29 +-
 drivers/pci/endpoint/pci-epc-core.c           |    7 +-
 drivers/pci/endpoint/pci-epc-mem.c            |  189 ++-
 include/linux/pci-epc.h                       |   43 +-
 17 files changed, 2016 insertions(+), 1271 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-ep.txt
 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

-- 
2.20.1