xpp: a massive backport from DAHDI. From Xorcom branch-rel-6839-r6908 .

Sun Mar  1 2009 Oron Peled <oron@actcom.co.il> - xpp.r6795
  * Fix cases where the command_queue overflowed during initialization.
    - Also add a 'command_queue_length' parameter to xpp.ko
  * More migrations to sysfs:
    - Add a 'transport' attribute to our astribank devices which
      points to the usb device we use. E.g:
       /sys/bus/astribanks/devices/xbus-00/transport is symlinked to
       ../../../../../../devices/pci0000:00/0000:00:10.4/usb5/5-4
    - Move /proc/xpp/XBUS-??/XPD-??/span to
      /sys/bus/xpds/devices/??:?:?/span
    - Migrate from /proc/xpp/sync to:
      /sys/bus/astribanks/drivers/xppdrv/sync
    - New 'offhook' attribute in:
      /sys/bus/xpds/devices/??:?:?/offhook
  * PRI: change the "timing" priority to match the convention used by
         other PRI cards -- I.e: lower numbers (not 0) have higher
	 priority.
  * FXO: 
    - Power denial: create two module parameters instead of hard-coded
      constants (power_denial_safezone, power_denial_minlen).
      For sites that get non-standard power-denial signals from central
      office on offhook.
    - Don't hangup on power-denial, just notify Dahdi and wait for
    - Fix caller-id detection for the case central office sends it before
      first ring without any indication before.
      Asterisk's desicion.
Mon, Dec  8 2008 Oron Peled <oron@actcom.co.il> - xpp.r6430
  * PRI:
    - Match our span clocking priorities (in system.conf)
      to Digium -- this is a reversal of the previous state.
      Now lower numbers (greater than 0) are better.
    - Synchronization fixes for PRI ports other than 0.
    - Fix T1 CRC for some countries (e.g: China).
  * FXS: fix bug in VMWI detection if using old asterisk
    which does not provide ZT_VMWI ioctl().
  * FXO:
    - Improve caller_id_style module parameter. This provide a workaround
      for countries that send this information without any notification
      (reverse polarity, ring, etc.)
    - Don't force on-hook upon power-denial. So, loopstart devices
      would ignore these as expected.
  * Implement a flow-control to prevent user space (init_card_* scripts)
    from pressuring our command queue.


git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.4@4631 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 38 insertions, 0 deletions

diff --git a/kernel/xpp/XppConfig.pm b/kernel/xpp/XppConfig.pm
new file mode 100644
index 0000000..3c7f293
--- /dev/null
+++ b/kernel/xpp/XppConfig.pm
@@ -0,0 +1,38 @@
+package XppConfig;
+#
+# Written by Oron Peled <oron@actcom.co.il>
+# Copyright (C) 2008, Xorcom
+# This program is free software; you can redistribute and/or
+# modify it under the same terms as Perl itself.
+#
+# $Id$
+#
+use strict;
+
+my $conf_file = "/etc/xpp.conf";
+
+sub import {
+	my $pack = shift || die "Import without package?";
+	my $init_dir = shift || die "$pack::import -- missing init_dir parameter";
+	my $local_conf = "$init_dir/xpp.conf";
+	$conf_file = $local_conf if -r $local_conf;
+}
+
+sub read_config($) {
+	my $opts = shift || die;
+
+	open(F, $conf_file) || return ();
+	while(<F>) {
+		chomp;
+		s/#.*//;	# strip comments
+		next unless /\S/;
+		s/\s*$//;	# Trim trailing whitespace
+		my ($key, $value) = split(/\s+/, $_, 2);
+		$opts->{$key} = $value;
+	}
+	close F;
+	$opts->{'xppconf'} = $conf_file;
+	return %{$opts};
+}
+
+1;