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

Cyrille Pitchen
2017-11-23T15:40:39Z

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

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2.11.0