[RFC PATCH 00/30] Add PCIe support to TI's J721E SoC

From: Kishon Vijay Abraham I
Date: Tue Jun 04 2019 - 09:21:03 EST

TI's J721E SoC uses Cadence PCIe core to implement both RC mode
and EP mode.

The high level features are:
*) Supports Legacy, MSI and MSI-X interrupt
*) Supports upto GEN4 speed mode
*) Supports SR-IOV
*) Supports multipe physical function
*) Ability to route all transactions via SMMU

This patch series
*) Modify Cadence driver to be used for TI's J721E SoC
*) Add a driver for J721E PCIe wrapper
*) Add SR-IOV support to PCI endpoint core and enable it in Cadence
*) Other cleanups in endpoint core and pci_endpoint_test.c

I can split the series into sepearate series if that is preferred.

Initial support for J721E SoC is sent here [1].

[1] -> https://lkml.org/lkml/2019/5/22/593

Kishon Vijay Abraham I (30):
dt-bindings: PCI: cadence: Add DT binding to use PCIe with IOMMU
dt-bindings: PCI: cadence: Add binding to reset PERST#
dt-bindings: PCI: cadence: Update host DT bindings with TI specific
dt-bindings: PCI: cadence: Update EP DT bindings with TI specific
linux/kernel.h: Add PTR_ALIGN_DOWN macro
PCI: cadence: Add support to use custom read and write accessors
PCI: cadence: Add read and write accessors to perform only 32-bit
PCI: cadence: Add support to use PCIe in J721E SoC
PCI: cadence: Add platform_data to start link and check link status
PCI: cadence: Use *_start_link() and *_wait_for_link() to establish
PCI: cadence: Add support to drive PERST# line using GPIO
PCI: cadence: Make "mem" an optional memory resource
PCI: cadence: Use local management register to configure Vendor ID
PCI: endpoint: Use notification chain mechanism to notify EPC events
to EPF
PCI: endpoint: Replace spinlock with mutex
PCI: endpoint: Assign function number of each PF in EPC core
PCI: endpoint: Protect concurrent access to pci_epf_ops with mutex
PCI: endpoint: Add support to add virtual function in endpoint core
PCI: endpoint: Add support to link a physical function to a virtual
PCI: endpoint: Add virtual function number in pci_epc ops
PCI: cadence: Add support to configure virtual functions
PCI: cadence: Configure pci_epc_features to align BAR addresses to 256
of/platform: Export of_platform_device_create_pdata()
dt-bindings: PCI: J721E: Add DT bindings for PCIe controller in J721E
PCI: j721e: Add TI J721E PCIe driver
misc: pci_endpoint_test: Add J721E in pci_device_id table
misc: pci_endpoint_test: Avoid using module parameter to determine
misc: pci_endpoint_test: Populate sriov_configure ops to configure
SRIOV device
misc: pci_endpoint_test: Enable legacy interrupt

.../bindings/pci/cdns,cdns-pcie-ep.txt | 1 +
.../bindings/pci/cdns,cdns-pcie-host.txt | 3 +
.../devicetree/bindings/pci/ti,j721e-pci.txt | 63 +++
drivers/misc/pci_endpoint_test.c | 22 +-
drivers/of/platform.c | 9 +-
drivers/pci/controller/Kconfig | 9 +
drivers/pci/controller/Makefile | 1 +
.../pci/controller/dwc/pcie-designware-ep.c | 35 +-
drivers/pci/controller/pci-j721e.c | 431 ++++++++++++++++++
drivers/pci/controller/pcie-cadence-ep.c | 181 ++++++--
drivers/pci/controller/pcie-cadence-host.c | 119 ++++-
drivers/pci/controller/pcie-cadence.c | 87 +++-
drivers/pci/controller/pcie-cadence.h | 125 ++++-
drivers/pci/controller/pcie-rockchip-ep.c | 18 +-
drivers/pci/endpoint/functions/pci-epf-test.c | 77 ++--
drivers/pci/endpoint/pci-ep-cfs.c | 51 ++-
drivers/pci/endpoint/pci-epc-core.c | 179 ++++----
drivers/pci/endpoint/pci-epf-core.c | 125 ++++-
include/dt-bindings/pci/pci.h | 12 +
include/linux/kernel.h | 1 +
include/linux/of_platform.h | 3 +
include/linux/pci-epc.h | 64 ++-
include/linux/pci-epf.h | 27 +-
24 files changed, 1365 insertions(+), 281 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pci/ti,j721e-pci.txt
create mode 100644 drivers/pci/controller/pci-j721e.c
create mode 100644 include/dt-bindings/pci/pci.h