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anssi |
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#!/bin/sh |
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# |
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# Display driver helper |
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# |
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anssi |
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# Copyright (c) 2010, 2011, 2012 Anssi Hannula <anssi.hannula@iki.fi> |
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# |
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# - Load drivers for specified modaliases, skipping disabled display drivers |
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# that would cause conflicts (KMS vs. vesa, KMS vs. proprietary). |
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# - Get information about enabled driver modules |
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# - Check that the loaded modules are correct |
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# |
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# Note that drivers not known by this script are handled normally, i.e. |
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# loaded automatically as udev normally would've. |
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# |
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# Licensed under terms of GPLv2 or later. |
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# |
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# When updating, check: |
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# - the variables below |
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# - check_driver function |
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# - check_dkms_status function |
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# |
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# DEBUG_DISPLAY_DRIVER_HELPER=yes |
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if [ -n "$DEBUG_DISPLAY_DRIVER_HELPER" ]; then |
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echo "$(date) $*" >> /dev/ddh_debug |
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exec 2>>/dev/ddh_debug |
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set -x |
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fi |
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anssi |
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export LC_ALL=C |
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KMS_DRIVERS="i915 radeon nouveau" |
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# module names at run-time (hence nvidia instead of nvidia*): |
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KNOWN_MODULES="i915|radeon|nouveau|fglrx|nvidia" |
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XORG_i915="intel" |
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CONFLICTS_i915="" |
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XORG_nouveau="nouveau" |
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CONFLICTS_nouveau="nv nvidia" |
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XORG_radeon="ati radeon" |
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CONFLICTS_radeon="fglrx" |
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# Note: no /usr |
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# See end of script for descriptions of global variables. |
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check_driver() { |
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local name="$1" |
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# modalias is optional, only needed to set MODOPTIONS for radeon |
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# this should not be set when not intending to load the module |
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local modalias="$2" |
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MODOPTIONS= |
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anssi |
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case "$name" in |
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i915) |
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# implicitely loaded by X.org |
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check_xorg $name 0 || return 1 |
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IS_KMS=1 |
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;; |
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radeon) |
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# implicitely loaded by X.org |
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check_xorg $name 0 || return 1 |
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# Do not load if the proprietary driver is temporarily disabled |
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# on a PowerXpress system. |
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# TODO: this check could be omitted if radeon was explicitely |
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# specified in xorg.conf - but that is only known by check_xorg. |
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check_gl /etc/fglrx/pxpress-free.ld.so.conf && return 1 |
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anssi |
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|
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IS_KMS=1 |
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# radeon KMS needs to be loaded before X server |
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NEEDS_LOAD_NOW=1 |
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|
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# check if firmware is needed and present (random fw checked) |
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if [ -n "$modalias" ] && [ ! -e "/lib/firmware/radeon/R700_rlc.bin" ]; then |
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# no firmware, lets check if it is needed |
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pciid="${modalias#pci:v00001002d0000}" |
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pciid="${pciid%sv*}" |
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case "$pciid" in |
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# All Radeons up to PALM (see radeon_probe.c) |
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31??|3E??|4???|5???|7???|68??|94??|95??|961?|971?|98??) |
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# The radeon driver reportedly has some issues |
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# when loaded without firmware - it doesn't fallback to noaccel |
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# nicely as it should, instead the framebuffer gets messed up. |
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# However, these cards are still supported by usermode modesetting, |
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# so just disable KMS. (Mageia bug #3466) |
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# TODO: actually fix the driver to not mess up framebuffer when no firmware |
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# is present and disable accel cleanly so that this workaround |
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# wouldn't be needed -Anssi |
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MODOPTIONS="$MODOPTIONS modeset=0" |
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IS_KMS= |
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# needs to be loaded now in order to set the module option |
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NEEDS_LOAD_NOW=1 |
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;; |
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????) |
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# Cards newer than PALM don't support UMS, so don't load the driver |
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# at all (it might still get done by X server, though). |
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return 1 |
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;; |
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*) |
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# Modalias parse error, strange. Load normally... |
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;; |
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esac |
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fi |
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anssi |
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;; |
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nouveau) |
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# implicitely loaded by X.org |
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check_xorg $name 0 || return 1 |
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IS_KMS=1 |
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;; |
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fglrx) |
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check_xorg fglrx 1 || return 1 |
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check_dkms fglrx || return 1 |
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;; |
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nvidia) |
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# manually installed driver or a call from check_loaded() |
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UNSURE=1 |
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check_xorg nvidia 1 || return 1 |
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;; |
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nvidiafb) |
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# this is only reached if nvidiafb is manually unblacklisted |
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return 2 |
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;; |
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nvidia*) |
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[ "$name" = "nvidia_current" ] && name=nvidia-current |
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# there are multiple co-installable driver versions, so check |
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# the active alternative as well |
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check_gl /etc/$name/ld.so.conf || return 1 |
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check_xorg nvidia 1 || return 1 |
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check_dkms $name || return 1 |
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;; |
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*) |
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# unknown, will be loaded only if no known drivers were found |
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return 2 |
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;; |
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esac |
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return 0 |
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} |
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# Return success if there is no new pending DKMS build (needed to disallow |
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# speedboot on very early boot). |
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# Previously failed build or a missing module is counted as no pending build. |
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# Note: no /usr |
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check_dkms_status() { |
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[ -e /etc/alternatives/gl_conf ] || return 0 |
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# return fast for non-DKMS |
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check_gl /etc/ld.so.conf.d/GL/standard.conf && return 0 |
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local active="$(ls -l /etc/alternatives/gl_conf | awk '{ print $NF }')" |
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local modname= |
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case $active in |
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/etc/nvidia*/ld.so.conf) |
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modname="nvidia${active#*nvidia}" |
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modname="${modname%/*}" |
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;; |
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/etc/ld.so.conf.d/GL/ati.conf) |
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modname="fglrx" |
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;; |
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*) |
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# Unknown DKMS-looking driver, |
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# allow speedboot. |
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return 0 |
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;; |
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esac |
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check_dkms "$modname" 1 |
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} |
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# Check if all loaded kernel modules have correct xorg.conf |
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check_loaded() { |
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for module in $(grep -oE "^($KNOWN_MODULES) " /proc/modules); do |
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# try to unload the driver in case it is not in use before bailing |
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check_driver "$module" || rmmod "$module" &>/dev/null || return 1 |
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done |
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return 0 |
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} |
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# Check that specified DKMS driver is not queued for build for the current |
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# kernel. Used to check if we 1) should disable speedboot for this boot |
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# (--check-dkms-status), and 2) if should should load the currently |
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# existing driver (--load). Doing otherwise might cause us to load a wrong old |
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# version of the driver that had been installed using e.g. binary DKMS |
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# packages. |
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# Note: no /usr |
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check_dkms() { |
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local driver="$1" |
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local force="$2" |
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# If called from DKMS itself or we are not in rc.sysinit anymore, |
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# there are no pending builds. |
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if [ -z "$force" ]; then |
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[ "$DKMS_AUTOLOAD_MODULE" = "$driver" ] && return 0 |
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[ -z "$STARTUP" ] && [ ! -f "/dev/.in_sysinit" ] && return 0 |
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fi |
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local found= |
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local uname_r="$(uname -r)" |
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for dir in /var/lib/dkms/$driver/*; do |
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[ -e "$dir" ] || return 0 # no module, no build; or no /var |
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[ -L "$dir" ] && continue # not a module version |
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found=1 # module version found |
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[ -e "$dir/$uname_r" ] && return 0 |
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[ -e "/var/lib/dkms-binary/$driver/$(basename "$dir")/$uname_r" ] && return 0 |
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if [ -e "$dir/build/make.log" ]; then |
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# Build has failed for some kernel, check if it is this one. |
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# If so, there is no point in returning 1. |
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grep -q "^DKMS make\.log.* $uname_r " && return 0 |
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fi |
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done |
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# if module versions were found but none were built for this kernel, return 1 |
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[ -n "$found" ] && return 1 || return 0 |
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} |
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# Note: no /usr |
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check_gl() { |
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local alt_inode="$(stat -L -c%i $1 2>/dev/null)" |
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[ -n "$alt_inode" ] || return 1 |
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[ -n "$GL_INODE" ] || GL_INODE="$(stat -L -c%i /etc/alternatives/gl_conf 2>/dev/null)" |
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[ "$alt_inode" = "$GL_INODE" ] || return 1 |
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return 0 |
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} |
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# Note: no /usr |
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get_xorg_drivers() { |
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if [ -z "$XORG_DRIVERS" ]; then |
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XORG_DRIVERS="$(cat /etc/X11/xorg.conf /etc/X11/xorg.conf.d/*.conf 2>/dev/null | |
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awk -F'"' -vORS=' ' -vIGNORECASE=1 ' |
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/^[[:space:]]+*section[[:space:]]+"device"/ { device=1 } |
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/endsection/ { device=0 } |
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/^[[:space:]]*driver[[:space:]]*".*"/ { if (device) drivers[$2]=$2 } |
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END { for (driver in drivers) print driver } |
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')" |
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[ -n "$XORG_DRIVERS" ] || XORG_DRIVERS="-" |
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fi |
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} |
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# Note: no /usr |
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anssi |
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# parameter 1: KMS module or xorg driver |
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# parameter 2: 1 - check if the driver is explicitely enabled |
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# 0 - check only for conflicts |
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anssi |
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check_xorg() { |
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local driver="$1" |
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local explicit_only="$2" |
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eval local xorg_drivers=\"\$XORG_$driver\" |
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[ -n "$xorg_drivers" ] || xorg_drivers="$driver" |
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eval local conflicts=\"\$CONFLICTS_$driver\" |
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get_xorg_drivers |
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conflict_found= |
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for enabled_driver in $XORG_DRIVERS; do |
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for xorg_driver in $xorg_drivers; do |
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[ "$enabled_driver" = "$xorg_driver" ] && return 0 |
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done |
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# if the X.org driver can be loaded implicitely, check that |
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# there are no conflicting drivers that override the driver |
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if [ "$explicit_only" = "0" -a -z "$conflict_found" ]; then |
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for conflict in vesa $conflicts; do |
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if [ "$enabled_driver" = "$conflict" ]; then |
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conflict_found=1 |
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continue 2 |
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# continue loop to check for an explicit load |
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fi |
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done |
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fi |
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done |
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# in case of a conflict, do not load the module |
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[ -n "$conflict_found" ] && return 1 |
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# no driver is selected - don't load if explicit_only is 1 |
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[ "$explicit_only" = "1" ] && return 1 |
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# implicit load allowed; only load if there is evidence that this is |
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# not a live cd or similar with automatic configuration occurring later |
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# in the boot process (which might configure a driver conflicting with |
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# the implicit driver, e.g. a proprietary one) |
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# TODO: Could this be replaced with a more robust check? |
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[ -e "/etc/X11/xorg.conf" ] || [ -e "/etc/sysconfig/harddrake2/kernels" ] || |
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[ -e "/etc/sysconfig/harddrake2/xorg" ] || [ -e "/boot/grub/menu.lst" ] |
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anssi |
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} |
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290 |
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# Load the driver for the specified modalias, if configured. |
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# Note: no /usr |
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load_driver() { |
293 |
anssi |
3918 |
local modalias="$1" |
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anssi |
912 |
local modulename |
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local load_default=1 |
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297 |
anssi |
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for modulename in $(/sbin/modprobe -Rq "$modalias"); do |
298 |
anssi |
3921 |
check_driver "$modulename" "$modalias" |
299 |
anssi |
912 |
case $? in |
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1) # a driver which needs handling by this script matches |
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# the modalias, but was not configured - do not run |
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# the generic modprobe if no other drivers are |
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# configured either |
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load_default= |
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continue |
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;; |
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2) continue |
308 |
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;; |
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esac |
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if [ -n "$IS_KMS" ]; then |
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grep -q "^$modulename " /proc/modules && return 0 |
313 |
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echo "$modulename" > /dev/.late_kms 2>/dev/null |
314 |
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# If NEEDS_LOAD_NOW is not set and plymouth is running, |
315 |
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# skip loading the driver to avoid quitting plymouth. |
316 |
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# The driver will be loaded later by X server itself. |
317 |
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[ -z "$NEEDS_LOAD_NOW" ] && /bin/plymouth --ping 2>/dev/null && return 0 |
318 |
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/bin/plymouth quit 2>/dev/null |
319 |
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fi |
320 |
anssi |
3921 |
/sbin/modprobe -b "$modulename" $MODOPTIONS && return 0 |
321 |
anssi |
912 |
done |
322 |
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323 |
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# no specially handled modules were loaded, so load all modules normally |
324 |
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# unless $load_default was set above |
325 |
anssi |
3918 |
[ -z "$load_default" ] || /sbin/modprobe -b "$modalias" |
326 |
anssi |
912 |
} |
327 |
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328 |
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is_kms_allowed() { |
329 |
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for driver in $KMS_DRIVERS; do |
330 |
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# Check all drivers for conflicts only. |
331 |
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check_xorg $driver 0 || return 1 |
332 |
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done |
333 |
anssi |
3923 |
|
334 |
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# Perform full check for KMS drivers of present hardware. |
335 |
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# Needed for e.g. checking if radeon firmware is present. |
336 |
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for modalias in $(get_hw_display_modaliases); do |
337 |
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for modulename in $(/sbin/modprobe -Rq "$modalias"); do |
338 |
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for driver in $KMS_DRIVERS; do |
339 |
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if [ "$driver" = "$modulename" ]; then |
340 |
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check_driver "$modulename" "$modalias" || return 1 |
341 |
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# Driver was ok but needs KMS disabled: |
342 |
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[ -n "$IS_KMS" ] || return 1 |
343 |
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break |
344 |
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fi |
345 |
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done |
346 |
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done |
347 |
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done |
348 |
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349 |
anssi |
912 |
return 0 |
350 |
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} |
351 |
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352 |
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get_initrd_kms_drivers() { |
353 |
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local initrd="$1" |
354 |
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355 |
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local kms_drivers="$(echo "$KMS_DRIVERS" | tr " " "|")" |
356 |
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zcat "$initrd" | cpio -t --quiet | sed -nr "s,.*/($kms_drivers)\.ko.*$,\1,p" |
357 |
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} |
358 |
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359 |
anssi |
3922 |
get_hw_display_modaliases() { |
360 |
anssi |
912 |
for device in $(grep -l 0x03 /sys/bus/pci/devices/0000\:0*/class); do |
361 |
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[ -e "$device" ] || continue |
362 |
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device="$(dirname $device)" |
363 |
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[ -f "$device/modalias" ] || continue |
364 |
anssi |
3922 |
cat "$device/modalias" |
365 |
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done |
366 |
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} |
367 |
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368 |
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get_active_kms_drivers() { |
369 |
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local kms_drivers= |
370 |
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|
for modalias in $(get_hw_display_modaliases); do |
371 |
anssi |
2245 |
for modulename in $(/sbin/modprobe -Rq "$modalias"); do |
372 |
anssi |
912 |
IS_KMS= |
373 |
anssi |
3921 |
check_driver "$modulename" "$modalias" || continue |
374 |
anssi |
912 |
[ -n "$IS_KMS" ] && echo $modulename |
375 |
|
|
done |
376 |
|
|
done |
377 |
|
|
} |
378 |
|
|
|
379 |
anssi |
3924 |
setup_boot_kms() { |
380 |
|
|
perl -I/usr/lib/libDrakX -MXconfig::various -e 'Xconfig::various::setup_kms()' |
381 |
|
|
} |
382 |
|
|
|
383 |
anssi |
912 |
usage() { |
384 |
|
|
cat <<EOF |
385 |
|
|
Usage: $0 action [arguments] |
386 |
|
|
|
387 |
|
|
Known actions: |
388 |
|
|
|
389 |
|
|
--load MODALIAS |
390 |
|
|
Load drivers matching MODALIAS, checking that they are enabled and |
391 |
|
|
configured. |
392 |
|
|
|
393 |
|
|
--load-dkms-autoload MODNAME MODALIAS |
394 |
|
|
Same as --load, but assume MODNAME is built and correct so that |
395 |
|
|
checking dkms status is unnecessary. |
396 |
|
|
|
397 |
|
|
--is-disabled MODNAME |
398 |
|
|
Checks whether the driver corresponding to MODNAME is disabled (e.g. |
399 |
|
|
a conflicting driver is configured, etc.). Unknown MODNAMEs are |
400 |
|
|
considered not disabled. |
401 |
|
|
|
402 |
|
|
--is-enabled-kms MODNAME |
403 |
|
|
Checks whether the driver corresponding to MODNAME is enabled and |
404 |
|
|
MODNAME is a known KMS module. Note that drivers may be enabled even |
405 |
|
|
if there is no such hardware. This just checks that there are |
406 |
|
|
no conflicting drivers in use etc. |
407 |
|
|
|
408 |
|
|
--is-kms-allowed |
409 |
|
|
Checks whether it is ok to load KMS drivers in initrd. This returns |
410 |
|
|
a failure when a conflicting driver is set up (vesa or a proprietary |
411 |
|
|
one). |
412 |
|
|
|
413 |
|
|
--get-all-kms-drivers |
414 |
|
|
Get a list of the known KMS drivers. |
415 |
|
|
|
416 |
|
|
--get-active-kms-drivers |
417 |
|
|
Get a list of the known KMS drivers which are enabled and the hardware |
418 |
|
|
is present. |
419 |
|
|
|
420 |
|
|
--get-initrd-kms-drivers INITRD |
421 |
|
|
Get a list of the known KMS drivers in initrd INITRD. |
422 |
|
|
|
423 |
|
|
--check-dkms-status |
424 |
|
|
Checks if there are no pending DKMS builds for the currently enabled |
425 |
|
|
drivers. |
426 |
|
|
|
427 |
|
|
--check-loaded |
428 |
|
|
Checks that there are no disabled drivers loaded. |
429 |
|
|
|
430 |
|
|
--check-speedboot |
431 |
|
|
Does --check-dkms-status and --check-loaded. |
432 |
|
|
|
433 |
|
|
--check-loaded-strict |
434 |
anssi |
3918 |
As --check-loaded, and consider ambiguous cases (e.g. nvidia where |
435 |
anssi |
912 |
we can't detect if the loaded driver has the correct version) as |
436 |
|
|
failure. |
437 |
anssi |
3924 |
|
438 |
|
|
--setup-boot-kms |
439 |
|
|
Set or unset the 'nokmsboot' option as necessary. |
440 |
anssi |
912 |
EOF |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
# clear global variables |
444 |
|
|
|
445 |
|
|
# cache for check_gl() |
446 |
|
|
GL_INODE= |
447 |
|
|
|
448 |
|
|
# cache for check_xorg() |
449 |
|
|
XORG_DRIVERS= |
450 |
|
|
|
451 |
|
|
# The driver is a KMS enabled driver. This will cause the script to quit |
452 |
|
|
# plymouth when a driver is loaded by --load and NEEDS_LOAD_NOW below is set. |
453 |
|
|
# This is done as plymouth is still attached to the default framebuffer (the |
454 |
|
|
# issues caused by not doing this don't seem to be fatal, though, but the |
455 |
|
|
# display may be lost completely until plymouth eventually stops). |
456 |
|
|
# There is no option in plymouth to "reload" a driver, it expects any KMS |
457 |
|
|
# driver to be loaded be before starting it. |
458 |
|
|
IS_KMS= |
459 |
|
|
|
460 |
|
|
# This KMS driver needs to be loaded before X server starts, so load it now |
461 |
|
|
# even if we have to shut down plymouth (see above). |
462 |
|
|
NEEDS_LOAD_NOW= |
463 |
|
|
|
464 |
|
|
# dkms module that was built when calling from DKMS |
465 |
|
|
DKMS_AUTOLOAD_MODULE= |
466 |
|
|
|
467 |
|
|
# Set by check_loaded() when it can't be sure that the correct driver is loaded |
468 |
|
|
# (e.g. in case of the multiple proprietary nvidia drivers which all identify as |
469 |
|
|
# "nvidia" in loaded modules list). |
470 |
|
|
UNSURE= |
471 |
|
|
|
472 |
anssi |
3921 |
# Extra module options - used to disable radeon modesetting when no firmware |
473 |
|
|
# is present and it is needed. |
474 |
|
|
MODOPTIONS= |
475 |
|
|
|
476 |
anssi |
912 |
case "$1" in |
477 |
|
|
--load) |
478 |
|
|
load_driver "$2" |
479 |
|
|
;; |
480 |
|
|
--load-dkms-autoload) |
481 |
|
|
DKMS_AUTOLOAD_MODULE="$2" |
482 |
|
|
load_driver "$3" |
483 |
|
|
;; |
484 |
|
|
--is-disabled) |
485 |
|
|
check_driver "$2" |
486 |
|
|
[ $? -eq 1 ] |
487 |
|
|
# unknown (2) are not considered disabled :) |
488 |
|
|
;; |
489 |
|
|
--is-enabled-kms) |
490 |
|
|
check_driver "$2" && [ -n "$IS_KMS" ] |
491 |
|
|
;; |
492 |
|
|
--is-kms-allowed) |
493 |
|
|
is_kms_allowed |
494 |
|
|
;; |
495 |
|
|
--check-dkms-status) |
496 |
|
|
check_dkms_status |
497 |
|
|
;; |
498 |
|
|
--get-all-kms-drivers) |
499 |
|
|
echo $KMS_DRIVERS |
500 |
|
|
;; |
501 |
|
|
--get-active-kms-drivers) |
502 |
|
|
get_active_kms_drivers |
503 |
|
|
;; |
504 |
|
|
--get-initrd-kms-drivers) |
505 |
|
|
get_initrd_kms_drivers "$2" |
506 |
|
|
;; |
507 |
|
|
--check-loaded) |
508 |
|
|
check_loaded |
509 |
|
|
;; |
510 |
|
|
--check-loaded-strict) |
511 |
|
|
check_loaded && [ -z "$UNSURE" ] |
512 |
|
|
;; |
513 |
|
|
--check-speedboot) |
514 |
|
|
check_dkms_status && check_loaded |
515 |
|
|
;; |
516 |
anssi |
3924 |
--setup-boot-kms) |
517 |
|
|
setup_boot_kms |
518 |
|
|
;; |
519 |
anssi |
912 |
*) |
520 |
|
|
usage |
521 |
|
|
;; |
522 |
|
|
esac |