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Date: Tue, 6 Apr 2021 14:00:11 -0700
From: Tom Rix <trix@...hat.com>
To: Lizhi Hou <lizhi.hou@...inx.com>, linux-kernel@...r.kernel.org
Cc: linux-fpga@...r.kernel.org, maxz@...inx.com,
sonal.santan@...inx.com, yliu@...inx.com, michal.simek@...inx.com,
stefanos@...inx.com, devicetree@...r.kernel.org, mdf@...nel.org,
robh@...nel.org, Max Zhen <max.zhen@...inx.com>
Subject: Re: [PATCH V4 XRT Alveo 20/20] fpga: xrt: Kconfig and Makefile
updates for XRT drivers
On 3/23/21 10:29 PM, Lizhi Hou wrote:
> Update fpga Kconfig/Makefile and add Kconfig/Makefile for new drivers.
>
> Signed-off-by: Sonal Santan <sonal.santan@...inx.com>
> Signed-off-by: Max Zhen <max.zhen@...inx.com>
> Signed-off-by: Lizhi Hou <lizhi.hou@...inx.com>
> ---
> MAINTAINERS | 11 +++++++++++
> drivers/Makefile | 1 +
> drivers/fpga/Kconfig | 2 ++
> drivers/fpga/Makefile | 5 +++++
> drivers/fpga/xrt/Kconfig | 8 ++++++++
> drivers/fpga/xrt/lib/Kconfig | 17 +++++++++++++++++
> drivers/fpga/xrt/lib/Makefile | 30 ++++++++++++++++++++++++++++++
> drivers/fpga/xrt/metadata/Kconfig | 12 ++++++++++++
> drivers/fpga/xrt/metadata/Makefile | 16 ++++++++++++++++
> drivers/fpga/xrt/mgmt/Kconfig | 15 +++++++++++++++
> drivers/fpga/xrt/mgmt/Makefile | 19 +++++++++++++++++++
> 11 files changed, 136 insertions(+)
> create mode 100644 drivers/fpga/xrt/Kconfig
> create mode 100644 drivers/fpga/xrt/lib/Kconfig
> create mode 100644 drivers/fpga/xrt/lib/Makefile
> create mode 100644 drivers/fpga/xrt/metadata/Kconfig
> create mode 100644 drivers/fpga/xrt/metadata/Makefile
> create mode 100644 drivers/fpga/xrt/mgmt/Kconfig
> create mode 100644 drivers/fpga/xrt/mgmt/Makefile
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index aa84121c5611..44ccc52987ac 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -7009,6 +7009,17 @@ F: Documentation/fpga/
> F: drivers/fpga/
> F: include/linux/fpga/
>
> +FPGA XRT DRIVERS
> +M: Lizhi Hou <lizhi.hou@...inx.com>
> +R: Max Zhen <max.zhen@...inx.com>
> +R: Sonal Santan <sonal.santan@...inx.com>
> +L: linux-fpga@...r.kernel.org
> +S: Maintained
Should this be 'Supported' ?
> +W: https://github.com/Xilinx/XRT
> +F: Documentation/fpga/xrt.rst
> +F: drivers/fpga/xrt/
> +F: include/uapi/linux/xrt/
> +
> FPU EMULATOR
> M: Bill Metzenthen <billm@...bpc.org.au>
> S: Maintained
> diff --git a/drivers/Makefile b/drivers/Makefile
> index 6fba7daba591..dbb3b727fc7a 100644
> --- a/drivers/Makefile
> +++ b/drivers/Makefile
> @@ -179,6 +179,7 @@ obj-$(CONFIG_STM) += hwtracing/stm/
> obj-$(CONFIG_ANDROID) += android/
> obj-$(CONFIG_NVMEM) += nvmem/
> obj-$(CONFIG_FPGA) += fpga/
> +obj-$(CONFIG_FPGA_XRT_METADATA) += fpga/
CONFIG_FPGA_XRT_METADATA is only defined when CONFIG_FPGA is, so i don't
think this line is needed.
> obj-$(CONFIG_FSI) += fsi/
> obj-$(CONFIG_TEE) += tee/
> obj-$(CONFIG_MULTIPLEXER) += mux/
> diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
> index 5ff9438b7b46..01410ff000b9 100644
> --- a/drivers/fpga/Kconfig
> +++ b/drivers/fpga/Kconfig
> @@ -227,4 +227,6 @@ config FPGA_MGR_ZYNQMP_FPGA
> to configure the programmable logic(PL) through PS
> on ZynqMP SoC.
>
> +source "drivers/fpga/xrt/Kconfig"
> +
> endif # FPGA
This is where it is defined..
> diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
> index 18dc9885883a..4b887bf95cb3 100644
> --- a/drivers/fpga/Makefile
> +++ b/drivers/fpga/Makefile
> @@ -48,3 +48,8 @@ obj-$(CONFIG_FPGA_DFL_NIOS_INTEL_PAC_N3000) += dfl-n3000-nios.o
>
> # Drivers for FPGAs which implement DFL
> obj-$(CONFIG_FPGA_DFL_PCI) += dfl-pci.o
> +
> +# XRT drivers for Alveo
> +obj-$(CONFIG_FPGA_XRT_METADATA) += xrt/metadata/
> +obj-$(CONFIG_FPGA_XRT_LIB) += xrt/lib/
> +obj-$(CONFIG_FPGA_XRT_XMGMT) += xrt/mgmt/
> diff --git a/drivers/fpga/xrt/Kconfig b/drivers/fpga/xrt/Kconfig
> new file mode 100644
> index 000000000000..0e2c59589ddd
> --- /dev/null
> +++ b/drivers/fpga/xrt/Kconfig
> @@ -0,0 +1,8 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# Xilinx Alveo FPGA device configuration
> +#
> +
> +source "drivers/fpga/xrt/metadata/Kconfig"
> +source "drivers/fpga/xrt/lib/Kconfig"
> +source "drivers/fpga/xrt/mgmt/Kconfig"
> diff --git a/drivers/fpga/xrt/lib/Kconfig b/drivers/fpga/xrt/lib/Kconfig
> new file mode 100644
> index 000000000000..935369fad570
> --- /dev/null
> +++ b/drivers/fpga/xrt/lib/Kconfig
> @@ -0,0 +1,17 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# XRT Alveo FPGA device configuration
> +#
> +
> +config FPGA_XRT_LIB
> + tristate "XRT Alveo Driver Library"
> + depends on HWMON && PCI && HAS_IOMEM
> + select FPGA_XRT_METADATA
> + select REGMAP_MMIO
> + help
> + Select this option to enable Xilinx XRT Alveo driver library. This
> + library is core infrastructure of XRT Alveo FPGA drivers which
> + provides functions for working with device nodes, iteration and
> + lookup of platform devices, common interfaces for platform devices,
> + plumbing of function call and ioctls between platform devices and
> + parent partitions.
> diff --git a/drivers/fpga/xrt/lib/Makefile b/drivers/fpga/xrt/lib/Makefile
> new file mode 100644
> index 000000000000..58563416efbf
> --- /dev/null
> +++ b/drivers/fpga/xrt/lib/Makefile
> @@ -0,0 +1,30 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# Copyright (C) 2020-2021 Xilinx, Inc. All rights reserved.
> +#
> +# Authors: Sonal.Santan@...inx.com
> +#
> +
> +FULL_XRT_PATH=$(srctree)/$(src)/..
> +FULL_DTC_PATH=$(srctree)/scripts/dtc/libfdt
> +
> +obj-$(CONFIG_FPGA_XRT_LIB) += xrt-lib.o
> +
> +xrt-lib-objs := \
> + lib-drv.o \
> + xroot.o \
> + xclbin.o \
> + subdev.o \
> + cdev.o \
> + group.o \
> + xleaf/vsec.o \
> + xleaf/axigate.o \
> + xleaf/devctl.o \
> + xleaf/icap.o \
> + xleaf/clock.o \
> + xleaf/clkfreq.o \
> + xleaf/ucs.o \
> + xleaf/ddr_calibration.o
> +
> +ccflags-y := -I$(FULL_XRT_PATH)/include \
> + -I$(FULL_DTC_PATH)
> diff --git a/drivers/fpga/xrt/metadata/Kconfig b/drivers/fpga/xrt/metadata/Kconfig
> new file mode 100644
> index 000000000000..129adda47e94
> --- /dev/null
> +++ b/drivers/fpga/xrt/metadata/Kconfig
> @@ -0,0 +1,12 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# XRT Alveo FPGA device configuration
> +#
> +
> +config FPGA_XRT_METADATA
> + bool "XRT Alveo Driver Metadata Parser"
> + select LIBFDT
> + help
> + This option provides helper functions to parse Xilinx Alveo FPGA
> + firmware metadata. The metadata is in device tree format and the
> + XRT driver uses it to discover the HW subsystems behind PCIe BAR.
> diff --git a/drivers/fpga/xrt/metadata/Makefile b/drivers/fpga/xrt/metadata/Makefile
> new file mode 100644
> index 000000000000..14f65ef1595c
> --- /dev/null
> +++ b/drivers/fpga/xrt/metadata/Makefile
> @@ -0,0 +1,16 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# Copyright (C) 2020-2021 Xilinx, Inc. All rights reserved.
> +#
> +# Authors: Sonal.Santan@...inx.com
> +#
> +
> +FULL_XRT_PATH=$(srctree)/$(src)/..
> +FULL_DTC_PATH=$(srctree)/scripts/dtc/libfdt
> +
> +obj-$(CONFIG_FPGA_XRT_METADATA) += xrt-md.o
> +
> +xrt-md-objs := metadata.o
> +
> +ccflags-y := -I$(FULL_XRT_PATH)/include \
> + -I$(FULL_DTC_PATH)
> diff --git a/drivers/fpga/xrt/mgmt/Kconfig b/drivers/fpga/xrt/mgmt/Kconfig
> new file mode 100644
> index 000000000000..31e9e19fffb8
> --- /dev/null
> +++ b/drivers/fpga/xrt/mgmt/Kconfig
> @@ -0,0 +1,15 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# Xilinx XRT FPGA device configuration
> +#
> +
> +config FPGA_XRT_XMGMT
> + tristate "Xilinx Alveo Management Driver"
> + depends on FPGA_XRT_LIB
> + select FPGA_XRT_METADATA
If the XRT driver depends on these other two configs and it does not
make sense to build these two seperately, could you remove these configs
and just use something like FPGA_XRT ?
Tom
> + select FPGA_BRIDGE
> + select FPGA_REGION
> + help
> + Select this option to enable XRT PCIe driver for Xilinx Alveo FPGA.
> + This driver provides interfaces for userspace application to access
> + Alveo FPGA device.
> diff --git a/drivers/fpga/xrt/mgmt/Makefile b/drivers/fpga/xrt/mgmt/Makefile
> new file mode 100644
> index 000000000000..acabd811f3fd
> --- /dev/null
> +++ b/drivers/fpga/xrt/mgmt/Makefile
> @@ -0,0 +1,19 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# Copyright (C) 2020-2021 Xilinx, Inc. All rights reserved.
> +#
> +# Authors: Sonal.Santan@...inx.com
> +#
> +
> +FULL_XRT_PATH=$(srctree)/$(src)/..
> +FULL_DTC_PATH=$(srctree)/scripts/dtc/libfdt
> +
> +obj-$(CONFIG_FPGA_XRT_XMGMT) += xrt-mgmt.o
> +
> +xrt-mgmt-objs := root.o \
> + main.o \
> + fmgr-drv.o \
> + main-region.o
> +
> +ccflags-y := -I$(FULL_XRT_PATH)/include \
> + -I$(FULL_DTC_PATH)
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