Hello Moritz, > -----Original Message----- > From: Moritz Fischer <[email protected]> > Sent: Sunday, February 21, 2021 10:40 AM > To: Tom Rix <[email protected]> > Cc: Lizhi Hou <[email protected]>; [email protected]; > [email protected]; Lizhi Hou <[email protected]>; [email protected]; > Max Zhen <[email protected]>; Sonal Santan <[email protected]>; Michal > Simek <[email protected]>; Stefano Stabellini <[email protected]>; > [email protected]; [email protected]; Max Zhen <[email protected]> > Subject: Re: [PATCH V3 XRT Alveo 18/18] fpga: xrt: Kconfig and Makefile > updates for XRT drivers > > On Sun, Feb 21, 2021 at 06:57:31AM -0800, Tom Rix wrote: > > As I am looking through the files, I have this comment. > > > > fpga/ is currently a single directory, while files could be organized > > in subdirectories like > > > > dfl/pci.c > > > > instead have the possible subdir name as a prefix to the filename. > > > > dfl-pci.c > > > > For consistency, > > > > xrt/metadata/metadata.c > > > > should be > > > > xrt-metadata.c > > Agreed. Keep the prefix. > > > > Likewise the build infra needs to integrated within the existing files > > fpga/Kconfig,Makefile > > > > This is a bigish refactor, so let's get a second opinion. > > In what sense? You mean adding a subdirectory? Maybe something like this > > drivers/fpga > - dfl/ > - xilinx/ > - intel/ > - lattice/ > - xrt/ > ... > > would generally make sense. > > We didn't have enough drivers to prioritize that yet, but we can look into it.
If longer term we would like to reorganize the drivers/fpga directory structure should we keep the current directory structure for XRT as in the patch series? > > > > Moritz ? > > > > On 2/17/21 10:40 PM, Lizhi Hou wrote: > > > Update fpga Kconfig/Makefile and add Kconfig/Makefile for new drivers. > > Expand the comment, there are several new configs that could use an > > explanation > > > > > > Signed-off-by: Sonal Santan <[email protected]> > > > Signed-off-by: Max Zhen <[email protected]> > > > Signed-off-by: Lizhi Hou <[email protected]> > > > --- > > > MAINTAINERS | 11 +++++++++++ > > > drivers/Makefile | 1 + > > > drivers/fpga/Kconfig | 2 ++ > > > drivers/fpga/Makefile | 4 ++++ > > > drivers/fpga/xrt/Kconfig | 8 ++++++++ > > > drivers/fpga/xrt/lib/Kconfig | 16 ++++++++++++++++ > > > 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, 134 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 > > > d3e847f7f3dc..e6e147c2454c 100644 > > > --- a/MAINTAINERS > > > +++ b/MAINTAINERS > > > @@ -6973,6 +6973,17 @@ F: Documentation/fpga/ > > > F: drivers/fpga/ > > > F: include/linux/fpga/ > > > > > > +FPGA XRT DRIVERS > > > +M: Lizhi Hou <[email protected]> > > > +R: Max Zhen <[email protected]> > > > +R: Sonal Santan <[email protected]> > > > +L: [email protected] > > > +S: Maintained > > > +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 <[email protected]> > > > S: Maintained > > > diff --git a/drivers/Makefile b/drivers/Makefile index > > > fd11b9ac4cc3..e03912af8e48 100644 > > > --- a/drivers/Makefile > > > +++ b/drivers/Makefile > > > @@ -178,6 +178,7 @@ obj-$(CONFIG_STM) += hwtracing/stm/ > > > obj-$(CONFIG_ANDROID) += android/ > > > obj-$(CONFIG_NVMEM) += nvmem/ > > > obj-$(CONFIG_FPGA) += fpga/ > > > +obj-y += fpga/xrt/metadata/ > > > > This is wrong. > > > > Move metadata building to fpga/ Makefile and pick an appropriate config, > not just 'obj-y' Will update. > > > > > obj-$(CONFIG_FSI) += fsi/ > > > obj-$(CONFIG_TEE) += tee/ > > > obj-$(CONFIG_MULTIPLEXER) += mux/ > > > diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig index > > > 5645226ca3ce..aeca635b1f25 100644 > > > --- a/drivers/fpga/Kconfig > > > +++ b/drivers/fpga/Kconfig > > > @@ -216,4 +216,6 @@ config FPGA_MGR_ZYNQMP_FPGA > > > to configure the programmable logic(PL) through PS > > > on ZynqMP SoC. > > > > > > +source "drivers/fpga/xrt/Kconfig" > > > + > > > endif # FPGA > > > diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile index > > > d8e21dfc6778..2b4453ff7c52 100644 > > > --- a/drivers/fpga/Makefile > > > +++ b/drivers/fpga/Makefile > > > @@ -46,3 +46,7 @@ dfl-afu-objs += dfl-afu-error.o > > > > > > # Drivers for FPGAs which implement DFL > > > obj-$(CONFIG_FPGA_DFL_PCI) += dfl-pci.o > > > + > > > +# XRT drivers for Alveo > > > +obj-$(CONFIG_FPGA_XRT_LIB) += xrt/lib/ > > > +obj-$(CONFIG_FPGA_XRT_XMGMT) += xrt/mgmt/ > > > > I don't see how mgmnt would work without lib. If that is so > > > > these configs could collapse to CONFIG_FPGA_XRT > > > > > 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..eed5cb73f5e2 > > > --- /dev/null > > > +++ b/drivers/fpga/xrt/lib/Kconfig > > > @@ -0,0 +1,16 @@ > > > +# 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 > > > + 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..5641231b2a36 > > > --- /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: [email protected] > > > +# > > > + > > > +FULL_XRT_PATH=$(srctree)/$(src)/.. > > > +FULL_DTC_PATH=$(srctree)/scripts/dtc/libfdt > > > + > > > +obj-$(CONFIG_FPGA_XRT_LIB) += xrt-lib.o > > > + > > > +xrt-lib-objs := \ > > > + main.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/calib.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..5012c9c6584d > > > --- /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 XRT > > and the XRT > > > + driver uses it to discover HW subsystems behind PCIe BAR. > > the HW > > > 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: [email protected] > > > +# > > > + > > > +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..2b2a2c34685c > > > --- /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 HWMON && PCI && FPGA_XRT_LIB > > > > FPGA_XRT_LIB also depends on HWMON and PCI, so this could be minimized. > > > > Tom > > > > > + select FPGA_XRT_METADATA > > > + 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..8051708c361c > > > --- /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: [email protected] > > > +# > > > + > > > +FULL_XRT_PATH=$(srctree)/$(src)/.. > > > +FULL_DTC_PATH=$(srctree)/scripts/dtc/libfdt > > > + > > > +obj-$(CONFIG_FPGA_XRT_XMGMT) += xmgmt.o > > > + > > > +xmgmt-objs := root.o \ > > > + main.o \ > > > + fmgr-drv.o \ > > > + main-region.o > > > + > > > +ccflags-y := -I$(FULL_XRT_PATH)/include \ > > > + -I$(FULL_DTC_PATH) > > > > - Moritz -Sonal
