selftests/firmware/fw_fallback.sh

2 # SPDX-License-Identifier: GPL-2.0
4 # to load firmware it can't find on disk itself. We must request a firmware
7 set -e
23 	local name="$1"
27 	echo -n "$name" >"$DIR"/trigger_request &
31 	while [ ! -e "$DIR"/"$name"/loading ]; do
33 		timeout=$(( $timeout - 1 ))
34 		if [ "$timeout" -eq 0 ]; then
35 			echo "$0: firmware interface never appeared" >&2
40 	echo 1 >"$DIR"/"$name"/loading
41 	cat "$file" >"$DIR"/"$name"/data
42 	echo 0 >"$DIR"/"$name"/loading
50 	local name="$1"
54 	echo -n "$name" >"$DIR"/trigger_request 2>/dev/null &
58 	while [ ! -e "$DIR"/"$name"/loading ]; do
60 		timeout=$(( $timeout - 1 ))
61 		if [ "$timeout" -eq 0 ]; then
62 			echo "$0: firmware interface never appeared" >&2
67 	echo -1 >"$DIR"/"$name"/loading
75 	if [ ! -e "$DIR"/trigger_custom_fallback ]; then
80 	local name="$1"
83 	echo -n "$name" >"$DIR"/trigger_custom_fallback 2>/dev/null &
87 	while [ ! -e "$DIR"/"$name"/loading ]; do
89 		timeout=$(( $timeout - 1 ))
90 		if [ "$timeout" -eq 0 ]; then
91 			echo "$0: firmware interface never appeared" >&2
96 	echo 1 >"$DIR"/"$name"/loading
97 	cat "$file" >"$DIR"/"$name"/data
98 	echo 0 >"$DIR"/"$name"/loading
108 	if [ ! -e "$DIR"/trigger_custom_fallback ]; then
113 	local name="$1"
116 	echo -n "$name" >"$DIR"/trigger_custom_fallback 2>/dev/null &
120 	while [ ! -e "$DIR"/"$name"/loading ]; do
122 		timeout=$(( $timeout - 1 ))
123 		if [ "$timeout" -eq 0 ]; then
124 			echo "$0: firmware interface never appeared" >&2
129 	echo -1 >"$DIR"/"$name"/loading
138 	local name="$1"
142 	echo 4 >/sys/class/firmware/timeout
146 	echo -n "$name" >"$DIR"/trigger_request 2>/dev/null
148 	SECONDS_DELTA=$(($SECONDS_AFTER - $SECONDS_BEFORE))
149 	if [ "$SECONDS_DELTA" -lt 4 ]; then
160 	DEVPATH="$DIR"/"nope-$NAME"/loading
163 	echo -n 2 >/sys/class/firmware/timeout
164 	echo -n "nope-$NAME" >"$DIR"/trigger_request 2>/dev/null &
169 	if [ ! -f $DEVPATH ]; then
177 		echo "a firmware rule like /lib/udev/rules.d/50-firmware.rules"
180 		echo "SUBSYSTEM==\"firmware\", ACTION==\"add\", ATTR{loading}=\"-1\""
187 	if diff -q "$FW" /dev/test_firmware >/dev/null ; then
188 		echo "$0: firmware was not expected to match" >&2
200 	echo 4 >/sys/class/firmware/timeout
202 	# Load this script instead of the desired firmware.
203 	load_fw "$NAME" "$0"
204 	if diff -q "$FW" /dev/test_firmware >/dev/null ; then
205 		echo "$0: firmware was not expected to match" >&2
208 		echo "$0: firmware comparison works"
212 	load_fw "$NAME" "$FW"
213 	if ! diff -q "$FW" /dev/test_firmware >/dev/null ; then
214 		echo "$0: firmware was not loaded" >&2
220 	load_fw_cancel "nope-$NAME" "$FW"
221 	if diff -q "$FW" /dev/test_firmware >/dev/null ; then
222 		echo "$0: firmware was expected to be cancelled" >&2
229 	load_fw_fallback_with_child "nope-signal-$NAME" "$FW"
230 	if [ "$?" -eq 0 ]; then
233 		echo "$0: error - sync firmware request cancelled due to SIGCHLD" >&2
236 	set -e
244 		if ! diff -q "$RANDOM_FILE_PATH" /dev/test_firmware >/dev/null ; then
245 			echo "$0: firmware was not loaded" >&2
255 		if ! diff -q "$RANDOM_FILE_PATH" /dev/test_firmware >/dev/null ; then
256 			echo "$0: firmware was not loaded" >&2
268 		if diff -q "$RANDOM_FILE_PATH" /dev/test_firmware >/dev/null ; then
269 			echo "$0: firmware was expected to be cancelled" >&2