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Annotation of qemu/roms/ipxe/src/util/get-pci-ids, revision 1.1

1.1     ! root        1: #! /usr/bin/perl -w
        !             2: 
        !             3: # get-pci-ids: extract pci vendor/device ids from linux net drivers
        !             4: 
        !             5: # Copyright (C) 2003 Georg Baum <[email protected]>
        !             6: 
        !             7: # This program is free software; you can redistribute it and/or modify
        !             8: # it under the terms of the GNU General Public License as published by
        !             9: # the Free Software Foundation; either version 2 of the License, or
        !            10: # (at your option) any later version.
        !            11: 
        !            12: # This program is distributed in the hope that it will be useful,
        !            13: # but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15: # GNU General Public License for more details.
        !            16: 
        !            17: # You should have received a copy of the GNU General Public License
        !            18: # along with this program; if not, write to the Free Software
        !            19: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            20: 
        !            21: 
        !            22: # Known bugs/limitations:
        !            23: # - Does not recognize all drivers because some require special cflags.
        !            24: #   Fails also on some drivers that do belong to other architectures
        !            25: #   than the one of the machine this script is running on.
        !            26: #   This is currently not so important because all drivers that have an
        !            27: #   Etherboot counterpart are recognized.
        !            28: 
        !            29: 
        !            30: use strict;
        !            31: use File::Basename "dirname";
        !            32: use POSIX "uname";
        !            33: 
        !            34: # Where to find the kernel sources
        !            35: my $kernel_src = "/usr/src/linux";
        !            36: 
        !            37: if($#ARGV >= 0) {
        !            38:        $kernel_src = shift;
        !            39: }
        !            40: 
        !            41: # Sanity checks
        !            42: if($#ARGV >= 0) {
        !            43:        print STDERR "Too many arguments.\n";
        !            44:        print STDERR "Usage: get-pci-ids [path to kernel sources]\n";
        !            45:        print STDERR "       /usr/src/linux is assumed if no path is given.\n";
        !            46:        exit 1;
        !            47: }
        !            48: 
        !            49: unless(-f "$kernel_src/include/linux/version.h") {
        !            50:        print STDERR "Could not find $kernel_src/include/linux/version.h.\n";
        !            51:        print STDERR "$kernel_src is probably no Linux kernel source tree.\n";
        !            52:        exit 1;
        !            53: }
        !            54: 
        !            55: # Flags that are needed to preprocess the drivers.
        !            56: # Some drivers need optimization
        !            57: my $cflags="-D__KERNEL__ -I$kernel_src/include -I$kernel_src/net/inet -O2";
        !            58: 
        !            59: # The C preprocessor. It needs to spit out the preprocessed source on stdout.
        !            60: my $cpp="gcc -E";
        !            61: 
        !            62: # List of drivers. We parse every .c file. It does not harm if it does not contain a driver.
        !            63: my @drivers = split /\s+/, `find $kernel_src/drivers/net -name '*.c' | sort`;
        !            64: 
        !            65: # Kernel version
        !            66: my $version = `grep UTS_RELEASE $kernel_src/include/linux/version.h`;
        !            67: chomp $version;
        !            68: $version =~ s/\s*#define\s+UTS_RELEASE\s+"(\S+)".*$/$1/g;
        !            69: 
        !            70: # Architecture
        !            71: my @uname = uname();
        !            72: 
        !            73: 
        !            74: # Print header
        !            75: print "# PCI vendor/device ids extracted from Linux $version on $uname[4] at " . gmtime() . "\n";
        !            76: 
        !            77: my $driver;
        !            78: 
        !            79: # Process the drivers
        !            80: foreach $driver (@drivers) {
        !            81: 
        !            82:        # Preprocess to expand macros
        !            83:        my $command = "$cpp $cflags -I" . dirname($driver) . " $driver";
        !            84:        open  DRIVER, "$command |" or die "Could not execute\n\"$command\".\n";
        !            85: 
        !            86:        # Extract the pci_device_id structure
        !            87:        my $found = 0;
        !            88:        my $line = "";
        !            89:        my @lines;
        !            90:        while(<DRIVER>) {
        !            91:                if(/^\s*static\s+struct\s+pci_device_id/) {
        !            92:                        # This file contains a driver. Print the name.
        !            93:                        $driver =~ s!$kernel_src/drivers/net/!!g;
        !            94:                        print "\n$driver\n";
        !            95:                        $found = 1;
        !            96:                        next;
        !            97:                }
        !            98:                if($found == 1){
        !            99:                        if(/\};/ or /{\s*0\s*,?\s*}/) {
        !           100:                                # End of struct
        !           101:                                $found = 0;
        !           102:                        } else {
        !           103:                                chomp;
        !           104:                                if(/\}\s*,?\s*\n?$/) {
        !           105:                                        # This line contains a full entry or the last part of it.
        !           106:                                        $_ = $line . $_;
        !           107:                                        $line = "";
        !           108:                                        s/[,\{\};\(\)]//g;      # Strip punctuation
        !           109:                                        s/^\s+//g;              # Eat whitespace at beginning of line
        !           110:                                        tr[A-Z][a-z];           # Convert to lowercase
        !           111:                                        # Push the vendor and device id to @lines if this line is not empty.
        !           112:                                        # We ignore everything else that might be there
        !           113:                                        my ($vendor_id, $device_id, $remainder) = split /\W+/, $_, 3;
        !           114:                                        push @lines, "$vendor_id $device_id\n" if($vendor_id && $device_id);
        !           115:                                } else {
        !           116:                                        # This line does contain a partial entry. Remember it.
        !           117:                                        $line .= "$_ ";
        !           118:                                }
        !           119:                        }
        !           120:                }
        !           121:        }
        !           122:        close DRIVER;           # No "or die", because $cpp fails on some files
        !           123: 
        !           124:        # Now print out the sorted values
        !           125:        @lines = sort @lines;
        !           126:        my $lastline = "";
        !           127:        foreach(@lines) {
        !           128:                # Print each vendor/device id combination only once.
        !           129:                # Some drivers (e.g. e100) do contain subfamilies
        !           130:                print if($_ ne $lastline);
        !           131:                $lastline = $_;
        !           132:        }
        !           133: }
        !           134: 
        !           135: 

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