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#! /usr/bin/perl -w
# get-pci-ids: extract pci vendor/device ids from linux net drivers
# Copyright (C) 2003 Georg Baum <gbaum@users.sf.net>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# Known bugs/limitations:
# - Does not recognize all drivers because some require special cflags.
# Fails also on some drivers that do belong to other architectures
# than the one of the machine this script is running on.
# This is currently not so important because all drivers that have an
# Etherboot counterpart are recognized.
use strict;
use File::Basename "dirname";
use POSIX "uname";
# Where to find the kernel sources
my $kernel_src = "/usr/src/linux";
if($#ARGV >= 0) {
$kernel_src = shift;
}
# Sanity checks
if($#ARGV >= 0) {
print STDERR "Too many arguments.\n";
print STDERR "Usage: get-pci-ids [path to kernel sources]\n";
print STDERR " /usr/src/linux is assumed if no path is given.\n";
exit 1;
}
unless(-f "$kernel_src/include/linux/version.h") {
print STDERR "Could not find $kernel_src/include/linux/version.h.\n";
print STDERR "$kernel_src is probably no Linux kernel source tree.\n";
exit 1;
}
# Flags that are needed to preprocess the drivers.
# Some drivers need optimization
my $cflags="-D__KERNEL__ -I$kernel_src/include -I$kernel_src/net/inet -O2";
# The C preprocessor. It needs to spit out the preprocessed source on stdout.
my $cpp="gcc -E";
# List of drivers. We parse every .c file. It does not harm if it does not contain a driver.
my @drivers = split /\s+/, `find $kernel_src/drivers/net -name '*.c' | sort`;
# Kernel version
my $version = `grep UTS_RELEASE $kernel_src/include/linux/version.h`;
chomp $version;
$version =~ s/\s*#define\s+UTS_RELEASE\s+"(\S+)".*$/$1/g;
# Architecture
my @uname = uname();
# Print header
print "# PCI vendor/device ids extracted from Linux $version on $uname[4] at " . gmtime() . "\n";
my $driver;
# Process the drivers
foreach $driver (@drivers) {
# Preprocess to expand macros
my $command = "$cpp $cflags -I" . dirname($driver) . " $driver";
open DRIVER, "$command |" or die "Could not execute\n\"$command\".\n";
# Extract the pci_device_id structure
my $found = 0;
my $line = "";
my @lines;
while(<DRIVER>) {
if(/^\s*static\s+struct\s+pci_device_id/) {
# This file contains a driver. Print the name.
$driver =~ s!$kernel_src/drivers/net/!!g;
print "\n$driver\n";
$found = 1;
next;
}
if($found == 1){
if(/\};/ or /{\s*0\s*,?\s*}/) {
# End of struct
$found = 0;
} else {
chomp;
if(/\}\s*,?\s*\n?$/) {
# This line contains a full entry or the last part of it.
$_ = $line . $_;
$line = "";
s/[,\{\};\(\)]//g; # Strip punctuation
s/^\s+//g; # Eat whitespace at beginning of line
tr[A-Z][a-z]; # Convert to lowercase
# Push the vendor and device id to @lines if this line is not empty.
# We ignore everything else that might be there
my ($vendor_id, $device_id, $remainder) = split /\W+/, $_, 3;
push @lines, "$vendor_id $device_id\n" if($vendor_id && $device_id);
} else {
# This line does contain a partial entry. Remember it.
$line .= "$_ ";
}
}
}
}
close DRIVER; # No "or die", because $cpp fails on some files
# Now print out the sorted values
@lines = sort @lines;
my $lastline = "";
foreach(@lines) {
# Print each vendor/device id combination only once.
# Some drivers (e.g. e100) do contain subfamilies
print if($_ ne $lastline);
$lastline = $_;
}
}
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