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authorAnssi Hannula <anssi@mageia.org>2012-04-05 02:49:35 +0000
committerAnssi Hannula <anssi@mageia.org>2012-04-05 02:49:35 +0000
commit9ef0abf9ef2baa444a481422ddeec037c7c819ba (patch)
tree165f4c5c616bcd68489ae481534d5991beeee3b3 /tools/display_driver_helper
parent3bbbe26aa84dc04589637c075435601fa3978193 (diff)
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display_driver_helper: load radeon module with modeset=0 when no firmware is installed (see mga#3466)
Diffstat (limited to 'tools/display_driver_helper')
-rw-r--r--tools/display_driver_helper53
1 files changed, 48 insertions, 5 deletions
diff --git a/tools/display_driver_helper b/tools/display_driver_helper
index 1ef1dac..5fb6c74 100644
--- a/tools/display_driver_helper
+++ b/tools/display_driver_helper
@@ -2,7 +2,7 @@
#
# Display driver helper
#
-# Copyright (c) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
+# Copyright (c) 2010, 2011, 2012 Anssi Hannula <anssi.hannula@iki.fi>
#
# - Load drivers for specified modaliases, skipping disabled display drivers
# that would cause conflicts (KMS vs. vesa, KMS vs. proprietary).
@@ -47,6 +47,12 @@ CONFLICTS_radeon="fglrx"
# See end of script for descriptions of global variables.
check_driver() {
local name="$1"
+ # modalias is optional, only needed to set MODOPTIONS for radeon
+ # this should not be set when not intending to load the module
+ local modalias="$2"
+
+ MODOPTIONS=
+
case "$name" in
i915)
# implicitely loaded by X.org
@@ -61,9 +67,42 @@ check_driver() {
# TODO: this check could be omitted if radeon was explicitely
# specified in xorg.conf - but that is only known by check_xorg.
check_gl /etc/fglrx/pxpress-free.ld.so.conf && return 1
+
IS_KMS=1
- # radeon needs to be loaded before X server
+ # radeon KMS needs to be loaded before X server
NEEDS_LOAD_NOW=1
+
+ # check if firmware is needed and present (random fw checked)
+ if [ -n "$modalias" ] && [ ! -e "/lib/firmware/radeon/R700_rlc.bin" ]; then
+ # no firmware, lets check if it is needed
+ pciid="${modalias#pci:v00001002d0000}"
+ pciid="${pciid%sv*}"
+ case "$pciid" in
+ # All Radeons up to PALM (see radeon_probe.c)
+ 31??|3E??|4???|5???|7???|68??|94??|95??|961?|971?|98??)
+ # The radeon driver reportedly has some issues
+ # when loaded without firmware - it doesn't fallback to noaccel
+ # nicely as it should, instead the framebuffer gets messed up.
+ # However, these cards are still supported by usermode modesetting,
+ # so just disable KMS. (Mageia bug #3466)
+ # TODO: actually fix the driver to not mess up framebuffer when no firmware
+ # is present and disable accel cleanly so that this workaround
+ # wouldn't be needed -Anssi
+ MODOPTIONS="$MODOPTIONS modeset=0"
+ IS_KMS=
+ # needs to be loaded now in order to set the module option
+ NEEDS_LOAD_NOW=1
+ ;;
+ ????)
+ # Cards newer than PALM don't support UMS, so don't load the driver
+ # at all (it might still get done by X server, though).
+ return 1
+ ;;
+ *)
+ # Modalias parse error, strange. Load normally...
+ ;;
+ esac
+ fi
;;
nouveau)
# implicitely loaded by X.org
@@ -256,7 +295,7 @@ load_driver() {
local load_default=1
for modulename in $(/sbin/modprobe -Rq "$modalias"); do
- check_driver "$modulename"
+ check_driver "$modulename" "$modalias"
case $? in
1) # a driver which needs handling by this script matches
# the modalias, but was not configured - do not run
@@ -278,7 +317,7 @@ load_driver() {
[ -z "$NEEDS_LOAD_NOW" ] && /bin/plymouth --ping 2>/dev/null && return 0
/bin/plymouth quit 2>/dev/null
fi
- /sbin/modprobe -b "$modulename" && return 0
+ /sbin/modprobe -b "$modulename" $MODOPTIONS && return 0
done
# no specially handled modules were loaded, so load all modules normally
@@ -310,7 +349,7 @@ get_active_kms_drivers() {
modalias="$(cat "$device/modalias")"
for modulename in $(/sbin/modprobe -Rq "$modalias"); do
IS_KMS=
- check_driver "$modulename" || continue
+ check_driver "$modulename" "$modalias" || continue
[ -n "$IS_KMS" ] && echo $modulename
done
done
@@ -402,6 +441,10 @@ DKMS_AUTOLOAD_MODULE=
# "nvidia" in loaded modules list).
UNSURE=
+# Extra module options - used to disable radeon modesetting when no firmware
+# is present and it is needed.
+MODOPTIONS=
+
case "$1" in
--load)
load_driver "$2"