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Thu, 18 Feb 2021 21:15:45 -0800 Envelope-to: michal.simek@xilinx.com, sonal.santan@xilinx.com, lizhi.hou@xilinx.com, stefanos@xilinx.com, maxz@xilinx.com, robh@kernel.org, mdf@kernel.org, devicetree@vger.kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, trix@redhat.com Received: from [10.17.2.60] (port=49296) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1lCy8n-0005RI-EK; Thu, 18 Feb 2021 21:15:45 -0800 Subject: Re: [PATCH V3 XRT Alveo 00/18] XRT Alveo driver overview To: Tom Rix , Lizhi Hou , CC: , , , , , , , References: <20210218064019.29189-1-lizhih@xilinx.com> <61668981-328b-64ea-0509-950172e5250c@redhat.com> From: Lizhi Hou Message-ID: <4cfc27d3-dd34-02f3-666a-31497eec2b78@xilinx.com> Date: Thu, 18 Feb 2021 21:15:45 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: <61668981-328b-64ea-0509-950172e5250c@redhat.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ebb773b5-0ce5-4870-4c5f-08d8d49569ba X-MS-TrafficTypeDiagnostic: BN6PR02MB2260: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Feb 2021 05:15:46.1338 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ebb773b5-0ce5-4870-4c5f-08d8d49569ba X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: CY1NAM02FT056.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR02MB2260 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/18/2021 05:52 AM, Tom Rix wrote: > On 2/17/21 10:40 PM, Lizhi Hou wrote: >> Hello, >> >> This is V3 of patch series which adds management physical function driver for Xilinx >> Alveo PCIe accelerator cards, https://www.xilinx.com/products/boards-and-kits/alveo.html >> This driver is part of Xilinx Runtime (XRT) open source stack. >> >> XILINX ALVEO PLATFORM ARCHITECTURE > Thanks for refreshing this patchset. > > It will take me a while to do the full review, so I thought I would give some early feed back. > > It applies to char-misc-next, but will have conflicts with in-flight patches around the MAINTAINERS file. This is not a big deal. > > The checkpatch is much better over v2, the complaints are > > WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? > #21: > new file mode 100644 > > WARNING: From:/Signed-off-by: email address mismatch: 'From: Lizhi Hou ' != 'Signed-off-by: Lizhi Hou ' > > MAINTAINERS warning i believe you address in the last patch. > > In the next revisions, please fix the signoff. > > The test robot is complaining about hppa64. While it may be an unlikely config, it would be best to fix it. Thanks for reviewing. I will fix signoff, hppa64 and arm build issue reported by robot in next revision. > > Tom > >> Alveo PCIe FPGA based platforms have a static *shell* partition and a partial >> re-configurable *user* partition. The shell partition is automatically loaded from >> flash when host is booted and PCIe is enumerated by BIOS. Shell cannot be changed >> till the next cold reboot. The shell exposes two PCIe physical functions: >> >> 1. management physical function >> 2. user physical function >> >> The patch series includes Documentation/xrt.rst which describes Alveo platform, >> XRT driver architecture and deployment model in more detail. >> >> Users compile their high level design in C/C++/OpenCL or RTL into FPGA image using >> Vitis https://www.xilinx.com/products/design-tools/vitis/vitis-platform.html >> tools. The compiled image is packaged as xclbin which contains partial bitstream >> for the user partition and necessary metadata. Users can dynamically swap the image >> running on the user partition in order to switch between different workloads by >> loading different xclbins. >> >> XRT DRIVERS FOR XILINX ALVEO >> >> XRT Linux kernel driver *xmgmt* binds to management physical function of Alveo >> platform. The modular driver framework is organized into several platform drivers >> which primarily handle the following functionality: >> >> 1. Loading firmware container also called xsabin at driver attach time >> 2. Loading of user compiled xclbin with FPGA Manager integration >> 3. Clock scaling of image running on user partition >> 4. In-band sensors: temp, voltage, power, etc. >> 5. Device reset and rescan >> >> The platform drivers are packaged into *xrt-lib* helper module with well >> defined interfaces. The module provides a pseudo-bus implementation for the >> platform drivers. More details on the driver model can be found in >> Documentation/xrt.rst. >> >> User physical function driver is not included in this patch series. >> >> LIBFDT REQUIREMENT >> >> XRT driver infrastructure uses Device Tree as a metadata format to discover >> HW subsystems in the Alveo PCIe device. The Device Tree schema used by XRT >> is documented in Documentation/xrt.rst. Unlike previous V1 and V2 version >> of patch series, V3 version does not require export of libfdt symbols. >> >> TESTING AND VALIDATION >> >> xmgmt driver can be tested with full XRT open source stack which includes user >> space libraries, board utilities and (out of tree) first generation user physical >> function driver xocl. XRT open source runtime stack is available at >> https://github.com/Xilinx/XRT >> >> Complete documentation for XRT open source stack including sections on Alveo/XRT >> security and platform architecture can be found here: >> >> https://xilinx.github.io/XRT/master/html/index.html >> https://xilinx.github.io/XRT/master/html/security.html >> https://xilinx.github.io/XRT/master/html/platforms_partitions.html >> >> Changes since v2: >> - Streamlined the driver framework into *xleaf*, *group* and *xroot* >> - Updated documentation to show the driver model with examples >> - Addressed kernel test robot errors >> - Added a selftest for basic driver framework >> - Documented device tree schema >> - Removed need to export libfdt symbols >> >> Changes since v1: >> - Updated the driver to use fpga_region and fpga_bridge for FPGA >> programming >> - Dropped platform drivers not related to PR programming to focus on XRT >> core framework >> - Updated Documentation/fpga/xrt.rst with information on XRT core framework >> - Addressed checkpatch issues >> - Dropped xrt- prefix from some header files >> >> For reference V1 version of patch series can be found here: >> >> https://lore.kernel.org/lkml/20201217075046.28553-1-sonals@xilinx.com/ >> https://lore.kernel.org/lkml/20201217075046.28553-2-sonals@xilinx.com/ >> https://lore.kernel.org/lkml/20201217075046.28553-3-sonals@xilinx.com/ >> https://lore.kernel.org/lkml/20201217075046.28553-4-sonals@xilinx.com/ >> https://lore.kernel.org/lkml/20201217075046.28553-5-sonals@xilinx.com/ >> https://lore.kernel.org/lkml/20201217075046.28553-6-sonals@xilinx.com/ >> https://lore.kernel.org/lkml/20201217075046.28553-7-sonals@xilinx.com/ >> >> Lizhi Hou (18): >> Documentation: fpga: Add a document describing XRT Alveo drivers >> fpga: xrt: driver metadata helper functions >> fpga: xrt: xclbin file helper functions >> fpga: xrt: xrt-lib platform driver manager >> fpga: xrt: group platform driver >> fpga: xrt: platform driver infrastructure >> fpga: xrt: management physical function driver (root) >> fpga: xrt: main platform driver for management function device >> fpga: xrt: fpga-mgr and region implementation for xclbin download >> fpga: xrt: VSEC platform driver >> fpga: xrt: UCS platform driver >> fpga: xrt: ICAP platform driver >> fpga: xrt: devctl platform driver >> fpga: xrt: clock platform driver >> fpga: xrt: clock frequence counter platform driver >> fpga: xrt: DDR calibration platform driver >> fpga: xrt: partition isolation platform driver >> fpga: xrt: Kconfig and Makefile updates for XRT drivers >> >> Documentation/fpga/index.rst | 1 + >> Documentation/fpga/xrt.rst | 842 ++++++++++++++++++++++ >> MAINTAINERS | 11 + >> drivers/Makefile | 1 + >> drivers/fpga/Kconfig | 2 + >> drivers/fpga/Makefile | 4 + >> drivers/fpga/xrt/Kconfig | 8 + >> drivers/fpga/xrt/include/events.h | 48 ++ >> drivers/fpga/xrt/include/group.h | 27 + >> drivers/fpga/xrt/include/metadata.h | 229 ++++++ >> drivers/fpga/xrt/include/subdev_id.h | 43 ++ >> drivers/fpga/xrt/include/xclbin-helper.h | 52 ++ >> drivers/fpga/xrt/include/xleaf.h | 276 +++++++ >> drivers/fpga/xrt/include/xleaf/axigate.h | 25 + >> drivers/fpga/xrt/include/xleaf/calib.h | 30 + >> drivers/fpga/xrt/include/xleaf/clkfreq.h | 23 + >> drivers/fpga/xrt/include/xleaf/clock.h | 31 + >> drivers/fpga/xrt/include/xleaf/devctl.h | 43 ++ >> drivers/fpga/xrt/include/xleaf/icap.h | 29 + >> drivers/fpga/xrt/include/xleaf/ucs.h | 24 + >> drivers/fpga/xrt/include/xmgmt-main.h | 37 + >> drivers/fpga/xrt/include/xroot.h | 114 +++ >> drivers/fpga/xrt/lib/Kconfig | 16 + >> drivers/fpga/xrt/lib/Makefile | 30 + >> drivers/fpga/xrt/lib/cdev.c | 231 ++++++ >> drivers/fpga/xrt/lib/group.c | 265 +++++++ >> drivers/fpga/xrt/lib/main.c | 274 +++++++ >> drivers/fpga/xrt/lib/main.h | 17 + >> drivers/fpga/xrt/lib/subdev.c | 871 +++++++++++++++++++++++ >> drivers/fpga/xrt/lib/subdev_pool.h | 53 ++ >> drivers/fpga/xrt/lib/xclbin.c | 394 ++++++++++ >> drivers/fpga/xrt/lib/xleaf/axigate.c | 298 ++++++++ >> drivers/fpga/xrt/lib/xleaf/calib.c | 226 ++++++ >> drivers/fpga/xrt/lib/xleaf/clkfreq.c | 221 ++++++ >> drivers/fpga/xrt/lib/xleaf/clock.c | 648 +++++++++++++++++ >> drivers/fpga/xrt/lib/xleaf/devctl.c | 206 ++++++ >> drivers/fpga/xrt/lib/xleaf/icap.c | 317 +++++++++ >> drivers/fpga/xrt/lib/xleaf/ucs.c | 235 ++++++ >> drivers/fpga/xrt/lib/xleaf/vsec.c | 359 ++++++++++ >> drivers/fpga/xrt/lib/xroot.c | 598 ++++++++++++++++ >> drivers/fpga/xrt/metadata/Kconfig | 12 + >> drivers/fpga/xrt/metadata/Makefile | 16 + >> drivers/fpga/xrt/metadata/metadata.c | 524 ++++++++++++++ >> drivers/fpga/xrt/mgmt/Kconfig | 15 + >> drivers/fpga/xrt/mgmt/Makefile | 19 + >> drivers/fpga/xrt/mgmt/fmgr-drv.c | 187 +++++ >> drivers/fpga/xrt/mgmt/fmgr.h | 28 + >> drivers/fpga/xrt/mgmt/main-impl.h | 37 + >> drivers/fpga/xrt/mgmt/main-region.c | 471 ++++++++++++ >> drivers/fpga/xrt/mgmt/main.c | 693 ++++++++++++++++++ >> drivers/fpga/xrt/mgmt/root.c | 342 +++++++++ >> include/uapi/linux/xrt/xclbin.h | 408 +++++++++++ >> include/uapi/linux/xrt/xmgmt-ioctl.h | 46 ++ >> 53 files changed, 9957 insertions(+) >> create mode 100644 Documentation/fpga/xrt.rst >> create mode 100644 drivers/fpga/xrt/Kconfig >> create mode 100644 drivers/fpga/xrt/include/events.h >> create mode 100644 drivers/fpga/xrt/include/group.h >> create mode 100644 drivers/fpga/xrt/include/metadata.h >> create mode 100644 drivers/fpga/xrt/include/subdev_id.h >> create mode 100644 drivers/fpga/xrt/include/xclbin-helper.h >> create mode 100644 drivers/fpga/xrt/include/xleaf.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/axigate.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/calib.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/clkfreq.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/clock.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/devctl.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/icap.h >> create mode 100644 drivers/fpga/xrt/include/xleaf/ucs.h >> create mode 100644 drivers/fpga/xrt/include/xmgmt-main.h >> create mode 100644 drivers/fpga/xrt/include/xroot.h >> create mode 100644 drivers/fpga/xrt/lib/Kconfig >> create mode 100644 drivers/fpga/xrt/lib/Makefile >> create mode 100644 drivers/fpga/xrt/lib/cdev.c >> create mode 100644 drivers/fpga/xrt/lib/group.c >> create mode 100644 drivers/fpga/xrt/lib/main.c >> create mode 100644 drivers/fpga/xrt/lib/main.h >> create mode 100644 drivers/fpga/xrt/lib/subdev.c >> create mode 100644 drivers/fpga/xrt/lib/subdev_pool.h >> create mode 100644 drivers/fpga/xrt/lib/xclbin.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/axigate.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/calib.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/clkfreq.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/clock.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/devctl.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/icap.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/ucs.c >> create mode 100644 drivers/fpga/xrt/lib/xleaf/vsec.c >> create mode 100644 drivers/fpga/xrt/lib/xroot.c >> create mode 100644 drivers/fpga/xrt/metadata/Kconfig >> create mode 100644 drivers/fpga/xrt/metadata/Makefile >> create mode 100644 drivers/fpga/xrt/metadata/metadata.c >> create mode 100644 drivers/fpga/xrt/mgmt/Kconfig >> create mode 100644 drivers/fpga/xrt/mgmt/Makefile >> create mode 100644 drivers/fpga/xrt/mgmt/fmgr-drv.c >> create mode 100644 drivers/fpga/xrt/mgmt/fmgr.h >> create mode 100644 drivers/fpga/xrt/mgmt/main-impl.h >> create mode 100644 drivers/fpga/xrt/mgmt/main-region.c >> create mode 100644 drivers/fpga/xrt/mgmt/main.c >> create mode 100644 drivers/fpga/xrt/mgmt/root.c >> create mode 100644 include/uapi/linux/xrt/xclbin.h >> create mode 100644 include/uapi/linux/xrt/xmgmt-ioctl.h >>