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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8d49751580
This patch introduces a sample user space daemon which implements the virtio device backends on the host. The daemon creates/removes/configures virtio device backends by communicating with the Intel MIC Host Driver. The virtio devices currently supported are virtio net, virtio console and virtio block. Virtio net supports TSO/GSO. The daemon also monitors card shutdown status and takes appropriate actions like killing the virtio backends and resetting the card upon card shutdown and crashes. Co-author: Ashutosh Dixit <ashutosh.dixit@intel.com> Co-author: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
174 lines
2.7 KiB
Bash
Executable File
174 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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# Intel MIC Platform Software Stack (MPSS)
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#
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# Copyright(c) 2013 Intel Corporation.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License, version 2, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# The full GNU General Public License is included in this distribution in
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# the file called "COPYING".
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#
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# Intel MIC User Space Tools.
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#
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# micctrl - Controls MIC boot/start/stop.
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#
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# chkconfig: 2345 95 05
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# description: start MPSS stack processing.
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#
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### BEGIN INIT INFO
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# Provides: micctrl
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### END INIT INFO
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# Source function library.
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. /etc/init.d/functions
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sysfs="/sys/class/mic"
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_status()
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{
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f=$sysfs/$1
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echo -e $1 state: "`cat $f/state`" shutdown_status: "`cat $f/shutdown_status`"
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}
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status()
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{
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if [ "`echo $1 | head -c3`" == "mic" ]; then
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_status $1
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return $?
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fi
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for f in $sysfs/*
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do
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_status `basename $f`
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RETVAL=$?
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[ $RETVAL -ne 0 ] && return $RETVAL
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done
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return 0
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}
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_reset()
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{
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f=$sysfs/$1
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echo reset > $f/state
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}
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reset()
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{
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if [ "`echo $1 | head -c3`" == "mic" ]; then
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_reset $1
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return $?
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fi
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for f in $sysfs/*
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do
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_reset `basename $f`
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RETVAL=$?
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[ $RETVAL -ne 0 ] && return $RETVAL
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done
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return 0
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}
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_boot()
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{
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f=$sysfs/$1
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echo "linux" > $f/bootmode
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echo "mic/uos.img" > $f/firmware
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echo "mic/$1.image" > $f/ramdisk
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echo "boot" > $f/state
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}
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boot()
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{
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if [ "`echo $1 | head -c3`" == "mic" ]; then
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_boot $1
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return $?
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fi
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for f in $sysfs/*
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do
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_boot `basename $f`
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RETVAL=$?
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[ $RETVAL -ne 0 ] && return $RETVAL
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done
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return 0
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}
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_shutdown()
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{
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f=$sysfs/$1
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echo shutdown > $f/state
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}
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shutdown()
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{
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if [ "`echo $1 | head -c3`" == "mic" ]; then
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_shutdown $1
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return $?
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fi
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for f in $sysfs/*
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do
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_shutdown `basename $f`
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RETVAL=$?
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[ $RETVAL -ne 0 ] && return $RETVAL
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done
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return 0
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}
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_wait()
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{
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f=$sysfs/$1
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while [ "`cat $f/state`" != "offline" -a "`cat $f/state`" != "online" ]
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do
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sleep 1
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echo -e "Waiting for $1 to go offline"
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done
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}
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wait()
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{
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if [ "`echo $1 | head -c3`" == "mic" ]; then
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_wait $1
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return $?
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fi
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# Wait for the cards to go offline
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for f in $sysfs/*
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do
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_wait `basename $f`
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RETVAL=$?
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[ $RETVAL -ne 0 ] && return $RETVAL
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done
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return 0
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}
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if [ ! -d "$sysfs" ]; then
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echo -e $"Module unloaded "
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exit 3
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fi
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case $1 in
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-s)
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status $2
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;;
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-r)
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reset $2
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;;
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-b)
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boot $2
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;;
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-S)
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shutdown $2
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;;
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-w)
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wait $2
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;;
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*)
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echo $"Usage: $0 {-s (status) |-r (reset) |-b (boot) |-S (shutdown) |-w (wait)}"
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exit 2
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esac
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exit $?
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