Move

hot_reset.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+dev=$1
+
+if [ -z "$dev" ]; then
+    echo "Error: no device specified"
+    exit 1
+fi
+
+if [ ! -e "/sys/bus/pci/devices/$dev" ]; then
+    dev="0000:$dev"
+fi
+
+if [ ! -e "/sys/bus/pci/devices/$dev" ]; then
+    echo "Error: device $dev not found"
+    exit 1
+fi
+
+port=$(basename $(dirname $(readlink "/sys/bus/pci/devices/$dev")))
+
+if [ ! -e "/sys/bus/pci/devices/$port" ]; then
+    echo "Error: device $port not found"
+    exit 1
+fi
+
+echo "Removing $dev..."
+
+echo 1 > "/sys/bus/pci/devices/$dev/remove"
+
+echo "Performing hot reset of port $port..."
+
+bc=$(setpci -s $port BRIDGE_CONTROL)
+
+echo "Bridge control:" $bc
+
+setpci -s $port BRIDGE_CONTROL=$(printf "%04x" $(("0x$bc" | 0x40)))
+sleep 0.01
+setpci -s $port BRIDGE_CONTROL=$bc
+sleep 0.5
+
+echo "Rescanning bus..."
+
+echo 1 > "/sys/bus/pci/devices/$port/rescan"
+
+sleep 5
+
+if [ ! -e "/sys/bus/pci/devices/$dev" ]; then
+  echo "First try was not successful. Starting stand-by."
+  rtcwake -u -s 5 -m mem
+  echo 1 > "/sys/bus/pci/devices/$port/rescan"
+  sleep 5
+fi
+
+if [ ! -e "/sys/bus/pci/devices/$dev" ]; then
+  echo "We were not successful"
+  exit 1
+else
+  echo "Happy gaming"
+fi