Shellscript to help find linux module sources for pci devices

fpcidsrc.sh

#!/bin/sh

if [ $# -ne 1 ]
then
	echo "Error: Please run with a keyword for searching pci devices."
	echo "keyword example: ether, vga, audio, etc..."
	exit 1
fi

echo "* symlink: /usr/src/linux -> `readlink /usr/src/linux`"
echo

key="$1"
pciinfo=`lspci | grep -i ${key}`

if [ "${pciinfo}" = "" ]
then
	echo "Error: No matching pci device"
	exit 1
fi

pcino=`echo "${pciinfo}" | awk '{print $1}'`

echo "* following devices are found."
echo "${pciinfo}"
echo
if [ `lspci | grep -i ${key} | wc -l` -gt 1 ]
then
	echo "Found 2 or more devices. exit."
	exit 2
fi

echo -n "Do you want to continue? [Y/n] "
read ans
if [ -z "$ans" -o "$ans" = "Y" ]
then
	echo "continue."
else
	echo "cancelled."
	exit 1
fi
echo

devid=`cat /sys/bus/pci/devices/0000\:${pcino}/device | sed -e 's/^0x//g'`
vndid=`cat /sys/bus/pci/devices/0000\:${pcino}/vendor | sed -e 's/^0x//g'`

echo "* keyword: ${key}"
echo "* pci id:  ${pcino}"
echo "* device:  0x${devid}"
echo "* vendor:  0x${vndid}"
echo

echo "* searching with vendor id (${vndid}) in include/linux/pci_ids.h"
defmacro=`grep -i ${vndid} /usr/src/linux/include/linux/pci_ids.h | awk '{print $2}'`
if [ -n "${defmacro}" ]
then
	echo "* macro defined as \"${defmacro}\""
else
	echo "* no macro defined"
fi
echo

echo "* searching with device id (${devid}) in drivers/* ..."
grep -ilR ${devid} /usr/src/linux/drivers/*
echo