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grepmod () {
local line
line=$( grep -h -i -m1 "^$1\\s" /drm.cfg.d/* )
[ -z "$line" ] && return
echo ${line:${#1}}
}
# pass module name(s) relative path in /lib/modules with .ko extension, or special like @nvidia or @amd
load_gfx () {
local MOD FILES RETVAL
RETVAL=1 # default: failure
while [ $# -gt 0 ]; do
MOD=$(echo $1) # trim :)
shift
[ -z "$MOD" ] && continue
if [ "x${MOD}" != "x${MOD#@}" ]; then
# starts with '@' - special
FILES=$( grepmod "$MOD" )
[ -z "$FILES" ] && drop_shell "Could not find entry for special $MOD"
if load_gfx $FILES; then
RETVAL=0
else
# loading special case failed, try fallback if found
MOD="${MOD}_fallback"
FILES=$( grepmod "$MOD" )
[ -n "$FILES" ] && load_gfx $FILES && RETVAL=0
fi
else # regular module name or filename
if [ "x${MOD%.ko}" == "x${MOD}" ]; then
# regular module name
modprobe "$MOD" && RETVAL=0
else
# a .ko file
insmod "/lib/modules/$MOD" && RETVAL=0
fi
fi
done
return $RETVAL
}
setup_gfx () {
local KERN RETVAL CARD CARDS SUCCESS FILES DRM
# check if forced by KCL
if [ "x$GFX" == "xnvidia" ]; then
load_gfx @nvidia
return
fi
if [ "x$GFX" == "xamdgpu" ]; then
load_gfx @amdgpu
return
fi
if [ "x$GFX" == "xradeon" ]; then
load_gfx @radeon
return
fi
# not forced - check which driver to load
CARDS=$(lspci | grep 'Class 0300' | awk '{print $4}')
if [ -d "/drm.cfg.d" ] && [ -n "$CARDS" ]; then
SUCCESS="yes"
for CARD in $CARDS; do
# look up exact pci id of this card
[ $DEBUG -ge 1 ] && echo "Trying exact matching for drm drivers for $CARD"
FILES=$( grepmod "$CARD" )
load_gfx $FILES && continue
# failed... try vendor id only
CARD=${CARD:0:4}
[ $DEBUG -ge 1 ] && echo "Trying vendor matching for drm drivers for $CARD"
FILES=$( grepmod "$CARD" )
load_gfx $FILES && continue
# everything failed for this card
echo "Unknown PCI vendor id: $CARD"
SUCCESS="no"
done
[ "x$SUCCESS" == "xyes" ] && return 0
fi
# braindead fallback
echo "At least one gfx card has no known drm drivers.... will load them all :/"
KERN=$(uname -r)
RETVAL=1
[ -z "$KERN" ] && KERN=$(ls '/lib/modules' | grep '\.' | tail -n 1)
for DRM in $(find "/lib/modules/$KERN/kernel/drivers/gpu/drm" -name "*.ko"); do
DRM="$(basename "$DRM")"
DRM="${DRM%.ko}"
modprobe "$DRM" && RETVAL=0
done
return $RETVAL
}
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