#!/bin/sh
#
# vim:sw=2 ts=8:et sta:fdm=marker
#
#
# Copyright (c) 2005 Ariff Abdullah 
#        (skywizard@MyBSD.org.my) All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#        $MyBSD$
#
# Date: Fri Aug 26 02:48:20 MYT 2005
#   OS: FreeBSD kasumi.MyBSD.org.my 5.4-STABLE i386
#

PCIR_LATTIMER=0x0d

case "$#" in
  1)
    if [ $1 = "-l" ]; then
      pciconf -l | while read x y ; do
        printf "PCI Latency Timer %-20s : %3d\n" \
            $x 0x`pciconf -r -b $x $PCIR_LATTIMER`
      done
      exit 0
    fi
    printf "PCI Latency Timer %-20s : %3d\n" $1 0x`pciconf -r -b $1 $PCIR_LATTIMER`
    ;;
  2)
    oldval=0x`pciconf -r -b $1 $PCIR_LATTIMER`
    pciconf -w -b $1 $PCIR_LATTIMER $2 > /dev/null 2>&1
    printf "PCI Latency Timer %-20s : %3d -> %d\n" $1 ${oldval} \
        0x`pciconf -r -b $1 $PCIR_LATTIMER`
    ;;
  *)
    echo "Usage: ${0##*/} [-l] <pci address> <latency_timer>" 1>&2
    exit 1
    ;;
esac