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Subject: Add a generic parser for USB logs Author: Mauro Carvalho Chehab <[email protected]> Date: Tue Dec 7 07:36:03 2010 -0200 This parser just decodes the standard USB fields. It is probably more useful as a basis for more specific parsers. Signed-off-by: Mauro Carvalho Chehab <[email protected]> contrib/usb_parse/parse_usb.pl | 76 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 76 insertions(+), 0 deletions(-) --- http://git.linuxtv.org/v4l-utils.git?a=commitdiff;h=8d0729e618a5b8a2a96ea1f2b0c156e9dab0ce46 diff --git a/contrib/usb_parse/parse_usb.pl b/contrib/usb_parse/parse_usb.pl new file mode 100755 index 0000000..45fafd3 --- /dev/null +++ b/contrib/usb_parse/parse_usb.pl @@ -0,0 +1,76 @@ +#!/usr/bin/perl +use strict; + +# Copyright (C) 2010 Mauro Carvalho Chehab <[email protected]> +# +# 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, version 2 of the License. +# +# 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. +# +# This small script parses USB dumps generated by several drivers, +# decoding USB bits. +# +# To use it, do: +# dmesg | ./parse_usb.pl +# +# Also, there are other utilities that produce similar outputs, and it +# is not hard to parse some USB analyzers log into the expected format. +# + +sub type_req($) +{ + my $reqtype = shift; + my $s; + + if ($reqtype & 0x80) { + $s = "WR "; + } else { + $s = "RD "; + } + if (($reqtype & 0x60) == 0x20) { + $s .= "CLAS "; + } elsif (($reqtype & 0x60) == 0x40) { + $s .= "VEND "; + } elsif (($reqtype & 0x60) == 0x60) { + $s .= "RSVD "; + } + + if (($reqtype & 0x1f) == 0x00) { + $s .= "DEV "; + } elsif (($reqtype & 0x1f) == 0x01) { + $s .= "INT "; + } elsif (($reqtype & 0x1f) == 0x02) { + $s .= "EP "; + } elsif (($reqtype & 0x1f) == 0x03) { + $s .= "OTHER "; + } elsif (($reqtype & 0x1f) == 0x04) { + $s .= "PORT "; + } elsif (($reqtype & 0x1f) == 0x05) { + $s .= "RPIPE "; + } else { + $s .= sprintf "RECIP 0x%02x ", $reqtype & 0x1f; + } + + $s =~ s/\s+$//; + return $s; +} + +while (<>) { + tr/A-F/a-f/; + if (m/([0-9a-f].) ([0-9a-f].) ([0-9a-f].) ([0-9a-f].) ([0-9a-f].) ([0-9a-f].) ([0-9a-f].) ([0-9a-f].)[\<\>\s]+(.*)/) { + my $reqtype = hex($1); + my $req = hex($2); + my $wvalue = hex("$4$3"); + my $windex = hex("$6$5"); + my $wlen = hex("$8$7"); + my $payload = $9; + + printf("%s, Req %3d, wValue: 0x%04x, wIndex 0x%04x, wlen %d: %s\n", + type_req($reqtype), $req, $wvalue, $windex, $wlen, $payload); + } +} _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
