284 lines
6.6 KiB
Bash
Executable File
284 lines
6.6 KiB
Bash
Executable File
#!/bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# This validates that the kernel will fall back to using the fallback mechanism
|
|
# to load firmware it can't find on disk itself. We must request a firmware
|
|
# that the kernel won't find, and any installed helper (e.g. udev) also
|
|
# won't find so that we can do the load ourself manually.
|
|
set -e
|
|
|
|
TEST_REQS_FW_SYSFS_FALLBACK="yes"
|
|
TEST_REQS_FW_SET_CUSTOM_PATH="no"
|
|
TEST_DIR=$(dirname $0)
|
|
source $TEST_DIR/fw_lib.sh
|
|
|
|
check_mods
|
|
check_setup
|
|
verify_reqs
|
|
setup_tmp_file
|
|
|
|
trap "test_finish" EXIT
|
|
|
|
load_fw()
|
|
{
|
|
local name="$1"
|
|
local file="$2"
|
|
|
|
# This will block until our load (below) has finished.
|
|
echo -n "$name" >"$DIR"/trigger_request &
|
|
|
|
# Give kernel a chance to react.
|
|
local timeout=10
|
|
while [ ! -e "$DIR"/"$name"/loading ]; do
|
|
sleep 0.1
|
|
timeout=$(( $timeout - 1 ))
|
|
if [ "$timeout" -eq 0 ]; then
|
|
echo "$0: firmware interface never appeared" >&2
|
|
exit 1
|
|
fi
|
|
done
|
|
|
|
echo 1 >"$DIR"/"$name"/loading
|
|
cat "$file" >"$DIR"/"$name"/data
|
|
echo 0 >"$DIR"/"$name"/loading
|
|
|
|
# Wait for request to finish.
|
|
wait
|
|
}
|
|
|
|
load_fw_cancel()
|
|
{
|
|
local name="$1"
|
|
local file="$2"
|
|
|
|
# This will block until our load (below) has finished.
|
|
echo -n "$name" >"$DIR"/trigger_request 2>/dev/null &
|
|
|
|
# Give kernel a chance to react.
|
|
local timeout=10
|
|
while [ ! -e "$DIR"/"$name"/loading ]; do
|
|
sleep 0.1
|
|
timeout=$(( $timeout - 1 ))
|
|
if [ "$timeout" -eq 0 ]; then
|
|
echo "$0: firmware interface never appeared" >&2
|
|
exit 1
|
|
fi
|
|
done
|
|
|
|
echo -1 >"$DIR"/"$name"/loading
|
|
|
|
# Wait for request to finish.
|
|
wait
|
|
}
|
|
|
|
load_fw_custom()
|
|
{
|
|
if [ ! -e "$DIR"/trigger_custom_fallback ]; then
|
|
echo "$0: custom fallback trigger not present, ignoring test" >&2
|
|
exit $ksft_skip
|
|
fi
|
|
|
|
local name="$1"
|
|
local file="$2"
|
|
|
|
echo -n "$name" >"$DIR"/trigger_custom_fallback 2>/dev/null &
|
|
|
|
# Give kernel a chance to react.
|
|
local timeout=10
|
|
while [ ! -e "$DIR"/"$name"/loading ]; do
|
|
sleep 0.1
|
|
timeout=$(( $timeout - 1 ))
|
|
if [ "$timeout" -eq 0 ]; then
|
|
echo "$0: firmware interface never appeared" >&2
|
|
exit 1
|
|
fi
|
|
done
|
|
|
|
echo 1 >"$DIR"/"$name"/loading
|
|
cat "$file" >"$DIR"/"$name"/data
|
|
echo 0 >"$DIR"/"$name"/loading
|
|
|
|
# Wait for request to finish.
|
|
wait
|
|
return 0
|
|
}
|
|
|
|
|
|
load_fw_custom_cancel()
|
|
{
|
|
if [ ! -e "$DIR"/trigger_custom_fallback ]; then
|
|
echo "$0: canceling custom fallback trigger not present, ignoring test" >&2
|
|
exit $ksft_skip
|
|
fi
|
|
|
|
local name="$1"
|
|
local file="$2"
|
|
|
|
echo -n "$name" >"$DIR"/trigger_custom_fallback 2>/dev/null &
|
|
|
|
# Give kernel a chance to react.
|
|
local timeout=10
|
|
while [ ! -e "$DIR"/"$name"/loading ]; do
|
|
sleep 0.1
|
|
timeout=$(( $timeout - 1 ))
|
|
if [ "$timeout" -eq 0 ]; then
|
|
echo "$0: firmware interface never appeared" >&2
|
|
exit 1
|
|
fi
|
|
done
|
|
|
|
echo -1 >"$DIR"/"$name"/loading
|
|
|
|
# Wait for request to finish.
|
|
wait
|
|
return 0
|
|
}
|
|
|
|
load_fw_fallback_with_child()
|
|
{
|
|
local name="$1"
|
|
local file="$2"
|
|
|
|
# This is the value already set but we want to be explicit
|
|
echo 4 >/sys/class/firmware/timeout
|
|
|
|
sleep 1 &
|
|
SECONDS_BEFORE=$(date +%s)
|
|
echo -n "$name" >"$DIR"/trigger_request 2>/dev/null
|
|
SECONDS_AFTER=$(date +%s)
|
|
SECONDS_DELTA=$(($SECONDS_AFTER - $SECONDS_BEFORE))
|
|
if [ "$SECONDS_DELTA" -lt 4 ]; then
|
|
RET=1
|
|
else
|
|
RET=0
|
|
fi
|
|
wait
|
|
return $RET
|
|
}
|
|
|
|
test_syfs_timeout()
|
|
{
|
|
DEVPATH="$DIR"/"nope-$NAME"/loading
|
|
|
|
# Test failure when doing nothing (timeout works).
|
|
echo -n 2 >/sys/class/firmware/timeout
|
|
echo -n "nope-$NAME" >"$DIR"/trigger_request 2>/dev/null &
|
|
|
|
# Give the kernel some time to load the loading file, must be less
|
|
# than the timeout above.
|
|
sleep 1
|
|
if [ ! -f $DEVPATH ]; then
|
|
echo "$0: fallback mechanism immediately cancelled"
|
|
echo ""
|
|
echo "The file never appeared: $DEVPATH"
|
|
echo ""
|
|
echo "This might be a distribution udev rule setup by your distribution"
|
|
echo "to immediately cancel all fallback requests, this must be"
|
|
echo "removed before running these tests. To confirm look for"
|
|
echo "a firmware rule like /lib/udev/rules.d/50-firmware.rules"
|
|
echo "and see if you have something like this:"
|
|
echo ""
|
|
echo "SUBSYSTEM==\"firmware\", ACTION==\"add\", ATTR{loading}=\"-1\""
|
|
echo ""
|
|
echo "If you do remove this file or comment out this line before"
|
|
echo "proceeding with these tests."
|
|
exit 1
|
|
fi
|
|
|
|
if diff -q "$FW" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was not expected to match" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: timeout works"
|
|
fi
|
|
}
|
|
|
|
run_sysfs_main_tests()
|
|
{
|
|
test_syfs_timeout
|
|
# Put timeout high enough for us to do work but not so long that failures
|
|
# slow down this test too much.
|
|
echo 4 >/sys/class/firmware/timeout
|
|
|
|
# Load this script instead of the desired firmware.
|
|
load_fw "$NAME" "$0"
|
|
if diff -q "$FW" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was not expected to match" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: firmware comparison works"
|
|
fi
|
|
|
|
# Do a proper load, which should work correctly.
|
|
load_fw "$NAME" "$FW"
|
|
if ! diff -q "$FW" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was not loaded" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: fallback mechanism works"
|
|
fi
|
|
|
|
load_fw_cancel "nope-$NAME" "$FW"
|
|
if diff -q "$FW" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was expected to be cancelled" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: cancelling fallback mechanism works"
|
|
fi
|
|
|
|
set +e
|
|
load_fw_fallback_with_child "nope-signal-$NAME" "$FW"
|
|
if [ "$?" -eq 0 ]; then
|
|
echo "$0: SIGCHLD on sync ignored as expected" >&2
|
|
else
|
|
echo "$0: error - sync firmware request cancelled due to SIGCHLD" >&2
|
|
exit 1
|
|
fi
|
|
set -e
|
|
}
|
|
|
|
run_sysfs_custom_load_tests()
|
|
{
|
|
RANDOM_FILE_PATH=$(setup_random_file)
|
|
RANDOM_FILE="$(basename $RANDOM_FILE_PATH)"
|
|
if load_fw_custom "$RANDOM_FILE" "$RANDOM_FILE_PATH" ; then
|
|
if ! diff -q "$RANDOM_FILE_PATH" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was not loaded" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: custom fallback loading mechanism works"
|
|
fi
|
|
fi
|
|
|
|
RANDOM_FILE_PATH=$(setup_random_file)
|
|
RANDOM_FILE="$(basename $RANDOM_FILE_PATH)"
|
|
if load_fw_custom "$RANDOM_FILE" "$RANDOM_FILE_PATH" ; then
|
|
if ! diff -q "$RANDOM_FILE_PATH" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was not loaded" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: custom fallback loading mechanism works"
|
|
fi
|
|
fi
|
|
|
|
RANDOM_FILE_REAL="$RANDOM_FILE_PATH"
|
|
FAKE_RANDOM_FILE_PATH=$(setup_random_file_fake)
|
|
FAKE_RANDOM_FILE="$(basename $FAKE_RANDOM_FILE_PATH)"
|
|
|
|
if load_fw_custom_cancel "$FAKE_RANDOM_FILE" "$RANDOM_FILE_REAL" ; then
|
|
if diff -q "$RANDOM_FILE_PATH" /dev/test_firmware >/dev/null ; then
|
|
echo "$0: firmware was expected to be cancelled" >&2
|
|
exit 1
|
|
else
|
|
echo "$0: cancelling custom fallback mechanism works"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
if [ "$HAS_FW_LOADER_USER_HELPER_FALLBACK" = "yes" ]; then
|
|
run_sysfs_main_tests
|
|
fi
|
|
|
|
run_sysfs_custom_load_tests
|
|
|
|
exit 0
|