linux-kernel - [PATCH 0/5] PCI: Add support to the Cadence PCIe controller

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Message-Id: <cover.1511439189.git.cyrille.pitchen@free-electrons.com>
Date:   Thu, 23 Nov 2017 16:01:45 +0100
From:   Cyrille Pitchen <cyrille.pitchen@...e-electrons.com>
To:     bhelgaas@...gle.com, kishon@...com, lorenzo.pieralisi@....com,
        linux-pci@...r.kernel.org
Cc:     adouglas@...ence.com, stelford@...ence.com, dgary@...ence.com,
        kgopi@...ence.com, eandrews@...ence.com,
        thomas.petazzoni@...e-electrons.com, sureshp@...ence.com,
        nsekhar@...com, linux-kernel@...r.kernel.org, robh@...nel.org,
        devicetree@...r.kernel.org,
        Cyrille Pitchen <cyrille.pitchen@...e-electrons.com>
Subject: [PATCH 0/5] PCI: Add support to the Cadence PCIe controller

Hi all,

this series of patches adds support to the Cadence PCIe controller.
It was tested on a ARM64 platform emulated by a Palladium running both
linux-next (next-20171123) and pci-next kernels.

The host mode was tested with some PCIe devices connected to the Palladium
through a speed-bridge. Some of those devices were a USB host controller
and a SATA controller. The PCIe host controller was also tested with a
second controller configured in endpoint mode and connected back to back
to the first controller.

The EndPoint Controller (EPC) driver of this series was tested with the
pci-epf-test.c EndPoint Function (EPF) driver and the pcitest userspace
program.

For linux-next, I applied this series on top of Kishon's patch
("PCI: endpoint: Use EPC's device in dma_alloc_coherent/dma_free_coherent")
otherwise dma_alloc_coherent() fails when called by pci_epf_alloc_space().

Also, I patched drivers/Makefile rather than drivers/pci/Makefile to make
the drivers/pci/cadence/pcie-cadence-ep.o linked after
drivers/pci/endpoint/*.o objects, otherwise the built-in pci-cadence-ep
driver would be probed before the PCI endpoint framework would have been
initialized, which results in a kernel crash.
I guess this is the reason why the "pci/dwc" line was also put in
drivers/Makefile, right after the "pci/endpoint" line.

Best regards,

Cyrille

Cyrille Pitchen (4):
  PCI: Add vendor ID for Cadence
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint
    controller
  PCI: cadence: add EndPoint Controller driver for Cadence PCIe
    controller

Scott Telford (1):
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host
    controller

 .../devicetree/bindings/pci/cdns,cdns-pcie-ep.txt  |  20 +
 .../bindings/pci/cdns,cdns-pcie-host.txt           |  54 ++
 drivers/Makefile                                   |   1 +
 drivers/pci/Kconfig                                |   1 +
 drivers/pci/cadence/Kconfig                        |  33 ++
 drivers/pci/cadence/Makefile                       |   3 +
 drivers/pci/cadence/pcie-cadence-ep.c              | 553 +++++++++++++++++++++
 drivers/pci/cadence/pcie-cadence-host.c            | 425 ++++++++++++++++
 drivers/pci/cadence/pcie-cadence.c                 | 110 ++++
 drivers/pci/cadence/pcie-cadence.h                 | 325 ++++++++++++
 include/linux/pci_ids.h                            |   2 +
 11 files changed, 1527 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/cdns,cdns-pcie-ep.txt
 create mode 100644 Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt
 create mode 100644 drivers/pci/cadence/Kconfig
 create mode 100644 drivers/pci/cadence/Makefile
 create mode 100644 drivers/pci/cadence/pcie-cadence-ep.c
 create mode 100644 drivers/pci/cadence/pcie-cadence-host.c
 create mode 100644 drivers/pci/cadence/pcie-cadence.c
 create mode 100644 drivers/pci/cadence/pcie-cadence.h

-- 
2.11.0