selftests: firmware: Add compressed firmware tests

This patch adds the test cases for checking compressed firmware load.
Two more cases are added to fw_filesystem.sh:
- Both a plain file and an xz file are present, and load the former
- Only an xz file is present, and load without '.xz' suffix

The tests are enabled only when CONFIG_FW_LOADER_COMPRESS is enabled
and xz program is installed.

Signed-off-by: Takashi Iwai <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

tools/testing/selftests/firmware/fw_filesystem.sh

···
 
 read_firmwares()
 {
+	if [ "$1" = "xzonly" ]; then
+		fwfile="${FW}-orig"
+	else
+		fwfile="$FW"
+	fi
 	for i in $(seq 0 3); do
 		config_set_read_fw_idx $i
 		# Verify the contents are what we expect.
 		# -Z required for now -- check for yourself, md5sum
 		# on $FW and DIR/read_firmware will yield the same. Even
 		# cmp agrees, so something is off.
-		if ! diff -q -Z "$FW" $DIR/read_firmware 2>/dev/null ; then
+		if ! diff -q -Z "$fwfile" $DIR/read_firmware 2>/dev/null ; then
 			echo "request #$i: firmware was not loaded" >&2
 			exit 1
 		fi
···
 
 test_batched_request_firmware()
 {
-	echo -n "Batched request_firmware() try #$1: "
+	echo -n "Batched request_firmware() $2 try #$1: "
 	config_reset
 	config_trigger_sync
-	read_firmwares
+	read_firmwares $2
 	release_all_firmware
 	echo "OK"
 }
 
 test_batched_request_firmware_direct()
 {
-	echo -n "Batched request_firmware_direct() try #$1: "
+	echo -n "Batched request_firmware_direct() $2 try #$1: "
 	config_reset
 	config_set_sync_direct
 	config_trigger_sync
···
 
 test_request_firmware_nowait_uevent()
 {
-	echo -n "Batched request_firmware_nowait(uevent=true) try #$1: "
+	echo -n "Batched request_firmware_nowait(uevent=true) $2 try #$1: "
 	config_reset
 	config_trigger_async
 	release_all_firmware
···
 
 test_request_firmware_nowait_custom()
 {
-	echo -n "Batched request_firmware_nowait(uevent=false) try #$1: "
+	echo -n "Batched request_firmware_nowait(uevent=false) $2 try #$1: "
 	config_reset
 	config_unset_uevent
 	RANDOM_FILE_PATH=$(setup_random_file)
 	RANDOM_FILE="$(basename $RANDOM_FILE_PATH)"
+	if [ "$2" = "both" ]; then
+		xz -9 -C crc32 -k $RANDOM_FILE_PATH
+	elif [ "$2" = "xzonly" ]; then
+		xz -9 -C crc32 $RANDOM_FILE_PATH
+	fi
 	config_set_name $RANDOM_FILE
 	config_trigger_async
 	release_all_firmware
···
 echo
 echo "Testing with the file present..."
 for i in $(seq 1 5); do
-	test_batched_request_firmware $i
+	test_batched_request_firmware $i normal
 done
 
 for i in $(seq 1 5); do
-	test_batched_request_firmware_direct $i
+	test_batched_request_firmware_direct $i normal
 done
 
 for i in $(seq 1 5); do
-	test_request_firmware_nowait_uevent $i
+	test_request_firmware_nowait_uevent $i normal
 done
 
 for i in $(seq 1 5); do
-	test_request_firmware_nowait_custom $i
+	test_request_firmware_nowait_custom $i normal
 done
 
 # Test for file not found, errors are expected, the failure would be
···
 
 for i in $(seq 1 5); do
 	test_request_firmware_nowait_custom_nofile $i
+done
+
+test "$HAS_FW_LOADER_COMPRESS" != "yes" && exit 0
+
+# test with both files present
+xz -9 -C crc32 -k $FW
+config_set_name $NAME
+echo
+echo "Testing with both plain and xz files present..."
+for i in $(seq 1 5); do
+	test_batched_request_firmware $i both
+done
+
+for i in $(seq 1 5); do
+	test_batched_request_firmware_direct $i both
+done
+
+for i in $(seq 1 5); do
+	test_request_firmware_nowait_uevent $i both
+done
+
+for i in $(seq 1 5); do
+	test_request_firmware_nowait_custom $i both
+done
+
+# test with only xz file present
+mv "$FW" "${FW}-orig"
+echo
+echo "Testing with only xz file present..."
+for i in $(seq 1 5); do
+	test_batched_request_firmware $i xzonly
+done
+
+for i in $(seq 1 5); do
+	test_batched_request_firmware_direct $i xzonly
+done
+
+for i in $(seq 1 5); do
+	test_request_firmware_nowait_uevent $i xzonly
+done
+
+for i in $(seq 1 5); do
+	test_request_firmware_nowait_custom $i xzonly
 done
 
 exit 0

tools/testing/selftests/firmware/fw_lib.sh

···
 {
 	HAS_FW_LOADER_USER_HELPER="$(kconfig_has CONFIG_FW_LOADER_USER_HELPER=y)"
 	HAS_FW_LOADER_USER_HELPER_FALLBACK="$(kconfig_has CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y)"
+	HAS_FW_LOADER_COMPRESS="$(kconfig_has CONFIG_FW_LOADER_COMPRESS=y)"
 	PROC_FW_IGNORE_SYSFS_FALLBACK="0"
 	PROC_FW_FORCE_SYSFS_FALLBACK="0"
 
···
 	fi
 
 	OLD_FWPATH="$(cat /sys/module/firmware_class/parameters/path)"
+
+	if [ "$HAS_FW_LOADER_COMPRESS" = "yes" ]; then
+		if ! which xz 2> /dev/null > /dev/null; then
+			HAS_FW_LOADER_COMPRESS=""
+		fi
+	fi
 }
 
 verify_reqs()

tools/testing/selftests/firmware/fw_run_tests.sh

···
 
 export HAS_FW_LOADER_USER_HELPER=""
 export HAS_FW_LOADER_USER_HELPER_FALLBACK=""
+export HAS_FW_LOADER_COMPRESS=""
 
 run_tests()
 {