[gentoo-commits] gentoo-x86 commit in sys-apps/pciutils/files: conf.d-pciparm init.d-pciparm

[Robin H. Johnson (robbat2)]

robbat2     08/10/07 11:07:09

  Added:                conf.d-pciparm init.d-pciparm
  Log:
  Implement pciparm init.d per bug #173347.
  (Portage version: 2.2_rc11/cvs/Linux 2.6.27-rc1-10246-gca5de40 x86_64)

Revision  Changes    Path
1.1                  sys-apps/pciutils/files/conf.d-pciparm

file : http://sources.gentoo.org/viewcvs.py/gentoo-x86/sys-apps/pciutils/files/conf.d-pciparm?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewcvs.py/gentoo-x86/sys-apps/pciutils/files/conf.d-pciparm?rev=1.1&content-type=text/plain

Index: conf.d-pciparm
===================================================================
# PCI tweaking article:
# http://www.gentoo.org/doc/en/articles/hardware-stability-p2.xml
#
# Apply to all devices:
# PCIPARM_ALL="...."
# Cards also can be addressed by vid:pid or by bus:slot.func
# (see setpci man page relative to -d and -s options)
# PCIPARM_(BUS|VENDOR)_#="...."
# Where # is sequentially numbered from zero.

# Examples:
# "open up" the PCI bus by allowing fairly long bursts
# for all devices, increasing performance
# (equivalent to: setpci -v -d *:* latency_timer=b0)
#PCIPARM_ALL="latency_timer=b0"

# maximize latency timers for network and audio,
# allowing them to transmit more data per burst,
# preventing buffer over/under-run conditions
#PCIPARM_BUS_0="00:04.0 latency_timer=ff"
#PCIPARM_BUS_1="01:04.0 latency_timer=ff"
#PCIPARM_VENDOR_0="1057:3410 latency_timer=ff"

# -v : whether to be verbose about changes
# -D : dry-run, no commit
# -f : do not warn if the change is already set
# (see the setpci manpage for more advanced options)
SETPCI_OPT="-f"



1.1                  sys-apps/pciutils/files/init.d-pciparm

file : http://sources.gentoo.org/viewcvs.py/gentoo-x86/sys-apps/pciutils/files/init.d-pciparm?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewcvs.py/gentoo-x86/sys-apps/pciutils/files/init.d-pciparm?rev=1.1&content-type=text/plain

Index: init.d-pciparm
===================================================================
#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-apps/pciutils/files/init.d-pciparm,v 1.1 2008/10/07 11:07:09 robbat2 Exp $

depend() {
	before bootmisc hdparm
	after localmount
}

checkconfig() {
	if [ ! -f /etc/conf.d/pciparm ]; then
		ewarn "/etc/conf.d/pciparm does not exist, skipping"
		return 1
	fi

	if [ -z "${PCIPARM_ALL}" -a -z "${PCIPARM_BUS_0}" -a  -z "${PCIPARM_VENDOR_0}" ]; then
		ewarn "None of PCIPARM_ALL, PCIPARM_BUS_* or PCIPARM_VENDOR_* set in /etc/conf.d/pciparm"
		return 1
	fi
}

do_setpci() {
	#ewarn "do_setpci: /usr/sbin/setpci $SETPCI_OPT $@"
	SWITCH=$1
	case "$SWITCH" in
		-d) DESC="(vendor)" ;;
		-s) DESC="(bus)" ;;
		*) eerror "Unknown setpci type!" ; return 1 ;;
	esac
	shift
	SPEC_ID=$1
	shift
	if [[ -z "$SPEC_ID" ]]; then
		eerror "Missing device specifier!"
		return 1
	fi
	if [[ -z "$@" ]]; then
		eerror "Missing configuration to set for $DESC $SPEC_ID!"
		return 1
	fi
	ebegin "Setting PCI params for $DESC $SPEC_ID to $@"
	/usr/sbin/setpci $SETPCI_OPT $SWITCH $SPEC_ID "$@"
	eend $?
	SWITCH=""
	SPEC_ID=""
}

start() {
	if get_bootparam "nopciparm" ; then
		ewarn "Skipping pciparm init as requested in kernel cmdline"
		return 0
	fi

	checkconfig || return 1
	
	if [ -n "$PCIPARM_ALL" ]; then
		do_setpci -d '*:*' $PCIPARM_ALL
	fi

	SEQ_BUS=0
	while true; do
		BUS_OPT=`eval echo '$'PCIPARM_BUS_${SEQ_BUS}`
		[[ -z "$BUS_OPT" ]] && break
		do_setpci -s $BUS_OPT
		SEQ_BUS=$(($SEQ_BUS+1))
	done

	SEQ_VENDOR=0
	while true; do
		VENDOR_OPT=`eval echo '$'PCIPARM_VENDOR_${SEQ_VENDOR}`
		[[ -z "$VENDOR_OPT" ]] && break
		do_setpci -d $VENDOR_OPT
		SEQ_VENDOR=$(($SEQ_VENDOR+1))
	done
}