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path: root/drivers/fpga/dfl-fme-main.c
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2020-01-03fpga: dfl: fme: remove set but not used variable 'fme'yu kuai1-2/+0
Fixes gcc '-Wunused-but-set-variable' warning: drivers/fpga/dfl-fme-main.c: In function ‘fme_dev_destroy’: drivers/fpga/dfl-fme-main.c:678:18: warning: variable ‘fme’ set but not used [-Wunused-but-set-variable] It is never used and so can be removed. Acked-by: Wu Hao <hao.wu@intel.com> Signed-off-by: yu kuai <yukuai3@huawei.com> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-10-17fpga: dfl: fme: add power management supportWu Hao1-0/+207
This patch adds support for power management private feature under FPGA Management Engine (FME). This private feature driver registers a hwmon for power (power1_input), thresholds information, e.g. (power1_max / crit / max_alarm / crit_alarm) and also read-only sysfs interfaces for other power management information. For configuration, user could write threshold values via above power1_max / crit sysfs interface under hwmon too. Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-10-17fpga: dfl: fme: add thermal management supportWu Hao1-0/+178
This patch adds support to thermal management private feature for DFL FPGA Management Engine (FME). This private feature driver registers a hwmon for thermal/temperature monitoring (hwmon temp1_input). If hardware automatic throttling is supported by this hardware, then driver also exposes sysfs interfaces under hwmon for thresholds (temp1_max/ crit/ emergency), threshold alarms (temp1_max_alarm/ temp1_crit_alarm) and throttling policy (temp1_max_policy). Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Russ Weight <russell.h.weight@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-09-04fpga: dfl: fme: add global error reporting supportWu Hao1-2/+15
This patch adds support for global error reporting for FPGA Management Engine (FME), it introduces sysfs interfaces to report different error detected by the hardware, and allow user to clear errors or inject error for testing purpose. Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Ananda Ravuri <ananda.ravuri@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-09-04fpga: dfl: fme: convert platform_driver to use dev_groupsWu Hao1-27/+2
This patch takes advantage of driver core which helps to create and remove sysfs attribute files, so there is no need to register sysfs entries manually in dfl-fme platform river code. Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-08-05fpga: dfl: fme: add capability sysfs interfacesWu Hao1-0/+48
This patch adds 3 read-only sysfs interfaces for FPGA Management Engine (FME) block for capabilities including cache_size, fabric_version and socket_id. Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org> Link: https://lore.kernel.org/r/1564914022-3710-11-git-send-email-hao.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-05fpga: dfl: add id_table for dfl private feature driverWu Hao1-3/+8
This patch adds id_table for each dfl private feature driver, it allows to reuse same private feature driver to match and support multiple dfl private features. Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Moritz Fischer <mdf@kernel.org> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org> Link: https://lore.kernel.org/r/1564914022-3710-6-git-send-email-hao.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-05fpga: dfl: fme: add DFL_FPGA_FME_PORT_RELEASE/ASSIGN ioctl support.Wu Hao1-0/+42
In order to support virtualization usage via PCIe SRIOV, this patch adds two ioctls under FPGA Management Engine (FME) to release and assign back the port device. In order to safely turn Port from PF into VF and enable PCIe SRIOV, it requires user to invoke this PORT_RELEASE ioctl to release port firstly to remove userspace interfaces, and then configure the PF/VF access register in FME. After disable SRIOV, it requires user to invoke this PORT_ASSIGN ioctl to attach the port back to PF. Ioctl interfaces: * DFL_FPGA_FME_PORT_RELEASE Release platform device of given port, it deletes port platform device to remove related userspace interfaces on PF. After this function, then it's safe to configure PF/VF access mode to VF, and enable VFs via SRIOV. * DFL_FPGA_FME_PORT_ASSIGN Assign platform device of given port back to PF. After configure PF/VF access mode to PF, this ioctl adds port platform device back to re-enable related userspace interfaces on PF. Signed-off-by: Zhang Yi Z <yi.z.zhang@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org> Link: https://lore.kernel.org/r/1564914022-3710-2-git-send-email-hao.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-25fpga: dfl: use driver core functions, not sysfs ones.Greg Kroah-Hartman1-3/+4
This is a driver, do not call "raw" sysfs functions, instead call driver core ones. Specifically convert the use of sysfs_create_files() and sysfs_remove_files() to use device_add_groups() and device_remove_groups() Cc: Wu Hao <hao.wu@intel.com> Cc: Alan Tull <atull@kernel.org> Cc: Moritz Fischer <mdf@kernel.org> Cc: linux-fpga@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190704055645.GA15471@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: fme: add partial reconfiguration sub feature supportKang Luwei1-1/+42
Partial Reconfiguration (PR) is the most important function for FME. It allows reconfiguration for given Port/Accelerated Function Unit (AFU). It creates platform devices for fpga-mgr, fpga-regions and fpga-bridges, and invokes fpga-region's interface (fpga_region_program_fpga) for PR operation once PR request received via ioctl. Below user space interface is exposed by this sub feature. Ioctl interface: * DFL_FPGA_FME_PORT_PR Do partial reconfiguration per information from userspace, including target port(AFU), buffer size and address info. It returns error code to userspace if failed. For detailed PR error information, user needs to read fpga-mgr's status sysfs interface. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Kang Luwei <luwei.kang@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: fme: add DFL_FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls supportWu Hao1-0/+12
DFL_FPGA_GET_API_VERSION and DFL_FPGA_CHECK_EXTENSION ioctls are common ones which need to be supported by all feature devices drivers including FME and AFU. Userspace application can use these ioctl interfaces to get the API info and check if specific extension is supported or not in current driver. This patch implements above 2 ioctls in FPGA Management Engine (FME) driver. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: fme: add header sub feature supportKang Luwei1-0/+68
The Header Register set is always present for FPGA Management Engine (FME), this patch implements init and uinit function for header sub feature and introduces several read-only sysfs interfaces for the capability and status. Sysfs interfaces: * /sys/class/fpga_region/<regionX>/<dfl-fme.x>/ports_num Read-only. Number of ports implemented * /sys/class/fpga_region/<regionX>/<dfl-fme.x>/bitstream_id Read-only. Bitstream (static FPGA region) identifier number. It contains the detailed version and other information of this static FPGA region. * /sys/class/fpga_region/<regionX>/<dfl-fme.x>/bitstream_metadata Read-only. Bitstream (static FPGA region) meta data. It contains the synthesis date, seed and other information of this static FPGA region. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Kang Luwei <luwei.kang@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: add FPGA Management Engine driver basic frameworkKang Luwei1-0/+158
The FPGA Management Engine (FME) provides power, thermal management, performance counters, partial reconfiguration and other functions. For each function, it is packaged into a private feature linked to the FME feature device in the 'Device Feature List'. It's a platform device created by DFL framework. This patch adds the basic framework of FME platform driver. It defines sub feature drivers to handle the different sub features, including init, uinit and ioctl. It also registers the file operations for the device file. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Kang Luwei <luwei.kang@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>