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en:pcie:hot-reset-linux [2019/04/16 23:00] alex |
en:pcie:hot-reset-linux [2019/04/16 23:01] alex |
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exit 1 | exit 1 | ||
fi | 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" | ||
</code> | </code> |