#!/bin/sh

# xpp_fxload: load XPP firmware
#
# This script can be run manually or from hotplug. 
#
# Firmware files should be located in $FIRMWARE_DIR which defaults:
# 	1. /usr/share/zaptel
#	2. Can be overidden by setting $FIRMWARE_DIR in the environment
#	3. Can be overidden by setting $FIRMWARE_DIR in /etc/default/zaptel
#
# Manual Run
# ##########
#
#   path/to/xpp_fxloader xppdetect
#
# Make sure the firmware files are in $FIRMWARE_DIR
#
#
# Hotplg Run
# ##########
#
# 1. Copy this file and the file xpp_fxloader.usermap to /etc/hotplug/usb/
# 2. tail -f  /var/log/messages...
#
#
# Written by Tzafrir Cohen <tzafrir.cohen@xorcom.com>
# Copyright (C) 2006, Xorcom
#
# All rights reserved.
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.

set -e

me=`basename $0`
DEFAULTS="/etc/default/zaptel"

if [ -t 2 ]; then
	LOGGER="logger -i -t '$me' -s"
else
	LOGGER="logger -i -t '$me'"
fi

if [ -r "$DEFAULTS" ]; then
	. "$DEFAULTS"
fi

FIRMWARE_DIR="${FIRMWARE_DIR:-/usr/share/zaptel}"

FIRM_FXS=$FIRMWARE_DIR/FPGA_FXS.hex
REENUM_SLEEP_TIME=3 # only used on manual runs

FPGA_LOAD="/sbin/fpga_load"

find_dev() {
  v_id=$1
  p_id=$2
  
  lsusb | tr -d : | awk "/ ID $v_id$p_id/{printf \"/proc/bus/usb/%s/%s \",\$2,\$4}"
}

do_fxload() {
  ( fxload -t fx2 $* 2>&1 1>/dev/null || exit 1 ) | $LOGGER
}

load_fw() {
  v_id=$1
  p_id=$2
  fw=$3
  
  devices=`find_dev $v_id $p_id`
  for dev in $devices
  do
    do_fxload -D $dev -I $FIRMWARE_DIR/$fw || exit 1
  done

  # Allow time for reenumeration: This only matters in the manual case.
  if [ "$devices" != '' ]; then sleep $REENUM_SLEEP_TIME; fi
}

hexfile_version() {
	hexfile=$1

	grep '$Id:' "$hexfile" | sed -e 's/^.*$Id: *[^ ]\+ *//' -e 's/ .*$//'
}

load_fpga() {
	dev=$1

	card_ver=`$FPGA_LOAD -d -D $dev`
	firm_ver=`hexfile_version $FIRM_FXS`

	$LOGGER "considering fpga firmware version '$firm_ver' for $dev with version $card_ver."
	case "$card_ver" in 
	1.001)
		$LOGGER "Loading firmware '$FIRM_FXS' (version $firm_ver) into '$dev'"
		$FPGA_LOAD -D "$dev" -I "$FIRM_FXS" 2>&1 >/dev/null | $LOGGER
		status=$PIPESTATUS
		if [ $status != 0 ]; then
			echo "fpga_load failed with status $status" | $LOGGER
			exit 77
		fi
		;;
	esac
}

#########################
##
## Manual run
##

# to run manually, pass the parameter 'xppdetect'
if [ "$1" = 'xppdetect' ]; then
	load_fw 04b4 8613 USB_8613.hex 
	load_fw e4e4 1130 USB_1130.hex
	for dev in `find_dev e4e4 2311`; do
		load_fpga $dev
	done
	exit $?
fi

#########################
##
## Hotplug run
##

if [ "$ACTION" = "add" ] && [ -f "$DEVICE" ]
then
	$LOGGER "Trying to find what to do for product $PRODUCT, device $DEVICE"
	case "$PRODUCT" in
	4b4/8613/*)
		FIRM_USB=$FIRMWARE_DIR/USB_8613.hex
		$LOGGER "Loading firmware '$FIRM_USB' into '$DEVICE'"
		do_fxload -D "$DEVICE" -I "$FIRM_USB"
		;;
	e4e4/1130/*)
		FIRM_USB=$FIRMWARE_DIR/USB_1130.hex
		$LOGGER "Loading firmware '$FIRM_USB' into '$DEVICE'"
		do_fxload -D "$DEVICE" -I "$FIRM_USB"
		;;
	e4e4/1131/*)
		load_fpga $DEVICE
		;;
	esac	
fi