Hello,
This V4 of patch series builds the core infrastructure for Xilinx Alveo PCIe
accelerator cards. This patch series incorporates feedback on the usage of
device tree for describing HW subsystems or endpoints as they are called
here. An endpoint is exposed as an addressable range in a PCIe BAR exposed
by the Alveo device and optionally includes an interrupt specification.
The patch series includes Documentation/xrt.rst which describes Alveo
platform, XRT driver architecture and deployment model in more detail.
The Alveo PCIe device uses Device Tree blob to describe its HW subsystems.
Each device tree node represents a hardware endpoint and each endpoint
is an hardware unit which requires a driver. XRT driver infrastructure
unflattens the device tree blob and overlays the device nodes
to the system device tree. of/unittest.c, pci/hotplug/pnv_php.c and other
linux kernel code are referenced for usage of OF functions.
The unflattened device nodes will be populated by existing Linux platform
device and OF infrastructure. This means a platform device will be created
for each endpoint node. And the platform driver will be bound based on
'compatible' property defined in endpoint node.
This patch series uses a builtin test device tree blob which contains only
one endpoint as an input.
--
Changes since v3:
- Removed xrt bus type, device and driver. Instead, the device nodes are
populated by existing platform device and OF infrastructure.
- fixed issue reported by kernel robot
Changes since v2:
- reversed the change of of_fdt_unflatten_tree()
- unified default of_root creation with unittest code
Changes since v1:
- fixed 'make dt_binding_check' errors.
--
References:
- V3 version of patch series.
https://lore.kernel.org/lkml/20211204003957.1448567-1-lizhi.hou@xxxxxxxxxx/
- XRT V9 driver patch series before major restructure.
https://lore.kernel.org/lkml/20210802160521.331031-1-lizhi.hou@xxxxxxxxxx/
Lizhi Hou (5):
Documentation: fpga: Add a document describing XRT Alveo driver
infrastructure
Documentation: devicetree: bindings: add binding for Alveo platform
of: create empty of root
fpga: xrt: xrt-lib common interfaces
fpga: xrt: management physical function driver
.../bindings/fpga/xlnx,alveo-partition.yaml | 76 ++++
.../fpga/xlnx,alveo-pr-isolation.yaml | 40 +++
Documentation/fpga/index.rst | 1 +
Documentation/fpga/xrt.rst | 337 ++++++++++++++++++
MAINTAINERS | 10 +
drivers/fpga/Kconfig | 3 +
drivers/fpga/Makefile | 4 +
drivers/fpga/xrt/Kconfig | 7 +
drivers/fpga/xrt/include/xpartition.h | 28 ++
drivers/fpga/xrt/lib/Kconfig | 17 +
drivers/fpga/xrt/lib/Makefile | 15 +
drivers/fpga/xrt/lib/lib-drv.c | 178 +++++++++
drivers/fpga/xrt/lib/lib-drv.h | 15 +
drivers/fpga/xrt/mgmt/Kconfig | 14 +
drivers/fpga/xrt/mgmt/Makefile | 16 +
drivers/fpga/xrt/mgmt/dt-test.dts | 12 +
drivers/fpga/xrt/mgmt/dt-test.h | 15 +
drivers/fpga/xrt/mgmt/xmgmt-drv.c | 158 ++++++++
drivers/of/Makefile | 5 +
drivers/of/fdt.c | 90 +++++
drivers/of/fdt_default.dts | 5 +
drivers/of/of_private.h | 17 +
drivers/of/unittest.c | 72 +---
23 files changed, 1066 insertions(+), 69 deletions(-)
create mode 100644 Documentation/devicetree/bindings/fpga/xlnx,alveo-partition.yaml
create mode 100644 Documentation/devicetree/bindings/fpga/xlnx,alveo-pr-isolation.yaml
create mode 100644 Documentation/fpga/xrt.rst
create mode 100644 drivers/fpga/xrt/Kconfig
create mode 100644 drivers/fpga/xrt/include/xpartition.h
create mode 100644 drivers/fpga/xrt/lib/Kconfig
create mode 100644 drivers/fpga/xrt/lib/Makefile
create mode 100644 drivers/fpga/xrt/lib/lib-drv.c
create mode 100644 drivers/fpga/xrt/lib/lib-drv.h
create mode 100644 drivers/fpga/xrt/mgmt/Kconfig
create mode 100644 drivers/fpga/xrt/mgmt/Makefile
create mode 100644 drivers/fpga/xrt/mgmt/dt-test.dts
create mode 100644 drivers/fpga/xrt/mgmt/dt-test.h
create mode 100644 drivers/fpga/xrt/mgmt/xmgmt-drv.c
create mode 100644 drivers/of/fdt_default.dts
--
2.27.0
