Created a Daemon to modprobe/rmmod vdu drivers based on request. (Xil…

…inx#6916)

* adding a daemon which modprobes vdu modules

* removing unneccessary locks

* changing the method to modprobe and rmmod of vdu

* removing zocl logic

* removing zocl logic

* changing names

* removed unused functionalities

Co-authored-by: root <[email protected]>

build/build_edge.sh

@@ -174,6 +174,21 @@ config_versal_project()
     cp $BB_FILE $VERSAL_PROJECT_DIR/project-spec/meta-user/recipes-apps/skd
     cp $INIT_SCRIPT $VERSAL_PROJECT_DIR/project-spec/meta-user/recipes-apps/skd/files
 
+    # Create daemon to modprobe/rmmod vdu modules after xclbin load
+    # This daemon probes vdu drivers on first xclbin load and exit
+    SERVICE_FILE=$APU_RECIPES_DIR/vdu-init.service
+    BB_FILE=$APU_RECIPES_DIR/vdu-init.bb
+    INIT_SCRIPT=$APU_RECIPES_DIR/vdu-init
+
+    if [ ! -d $VERSAL_PROJECT_DIR/project-spec/meta-user/recipes-apps/vdu-init ]; then
+        $PETA_BIN/petalinux-config --silentconfig
+        $PETA_BIN/petalinux-create -t apps --template install -n vdu-init --enable
+    fi
+
+    cp $SERVICE_FILE $VERSAL_PROJECT_DIR/project-spec/meta-user/recipes-apps/vdu-init/files
+    cp $BB_FILE $VERSAL_PROJECT_DIR/project-spec/meta-user/recipes-apps/vdu-init
+    cp $INIT_SCRIPT $VERSAL_PROJECT_DIR/project-spec/meta-user/recipes-apps/vdu-init/files
+
     # Generate vdu modules and add them to apu package
 
     # Enable VDU kernel module 

src/runtime_src/tools/scripts/apu_recipes/vdu-init

@@ -0,0 +1,44 @@
+#!/bin/sh
+# This script is used for probing and removing vdu modules
+
+log_file="/var/log/vdu_daemon_logs"
+vdu_init_dir="/etc/"
+vdu_init_file=$vdu_init_dir/vdu_init
+
+function write_log() {
+        now_time='['$(date +"%Y-%m-%d %H:%M:%S")']'
+        echo $now_time $1 | tee -a "$log_file"
+}
+
+function vdu_probe() {
+
+        write_log 'modprobing vdu modules ...'
+
+        modprobe allegro ; modprobe al5d ;
+        if [ $? == 0 ]
+        then
+                write_log 'modprobe successful'
+        else
+                write_log 'modprobe failed'
+        fi
+        echo 0 > $vdu_init_file
+}
+
+write_log 'Daemon script started. this script is used for probing/removing vdu modules'
+
+mkdir -p $vdu_init_dir
+touch $vdu_init_file
+chmod 666 $vdu_init_file
+while true
+do
+        action=$(cat $vdu_init_file)
+        #action :0 -> dont do anything
+        #action :1 -> modprobe the modules
+
+        if [ "$action" == 1 ]
+        then
+                vdu_probe
+        fi
+
+        sleep 5
+done

src/runtime_src/tools/scripts/apu_recipes/vdu-init.bb

@@ -0,0 +1,34 @@
+SUMMARY = "modprobe/rmmod of vdu modules"
+SECTION = "PETALINUX/apps"
+LICENSE = "MIT"
+
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+SRC_URI = "file://vdu-init         file://vdu-init.service "
+
+S = "${WORKDIR}"
+
+FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
+
+inherit update-rc.d systemd
+
+INITSCRIPT_NAME = "vdu-init"
+INITSCRIPT_PARAMS = "start 99 S ."
+
+SYSTEMD_PACKAGES = "${PN}"
+SYSTEMD_SERVICE:${PN} = "vdu-init.service"
+SYSTEMD_AUTO_ENABLE:${PN}="enable"
+
+do_install() {
+        if ${@bb.utils.contains('DISTRO_FEATURES', 'sysvinit', 'true', 'false', d)}; then
+                install -d ${D}${sysconfdir}/init.d/
+                install -m 0755 ${WORKDIR}/vdu-init ${D}${sysconfdir}/init.d/
+        fi
+
+        install -d ${D}${bindir}
+        install -m 0755 ${WORKDIR}/vdu-init ${D}${bindir}/
+        install -d ${D}${systemd_system_unitdir}
+        install -m 0644 ${WORKDIR}/vdu-init.service ${D}${systemd_system_unitdir}
+}
+
+FILES:${PN} += "${@bb.utils.contains('DISTRO_FEATURES','sysvinit','${sysconfdir}/*', '', d)}"

src/runtime_src/tools/scripts/apu_recipes/vdu-init.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=vdu-init
+
+[Service]
+ExecStart=/usr/bin/vdu-init
+StandardOutput=journal+console
+
+[Install]
+WantedBy=multi-user.target