diff options
Diffstat (limited to 'tools/testing/selftests/drivers/sdsi')
| -rwxr-xr-x | tools/testing/selftests/drivers/sdsi/sdsi.sh | 25 | ||||
| -rw-r--r-- | tools/testing/selftests/drivers/sdsi/sdsi_test.py | 226 |
2 files changed, 251 insertions, 0 deletions
diff --git a/tools/testing/selftests/drivers/sdsi/sdsi.sh b/tools/testing/selftests/drivers/sdsi/sdsi.sh new file mode 100755 index 000000000..9b84b9b82 --- /dev/null +++ b/tools/testing/selftests/drivers/sdsi/sdsi.sh @@ -0,0 +1,25 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# Runs tests for the intel_sdsi driver + +if ! command -v python3 > /dev/null 2>&1; then + echo "drivers/sdsi: [SKIP] python3 not installed" + exit 77 +fi + +if ! python3 -c "import pytest" > /dev/null 2>&1; then + echo "drivers/sdsi: [SKIP] pytest module not installed" + exit 77 +fi + +if ! /sbin/modprobe -q -r intel_sdsi; then + echo "drivers/sdsi: [SKIP]" + exit 77 +fi + +if /sbin/modprobe -q intel_sdsi && python3 -m pytest sdsi_test.py; then + echo "drivers/sdsi: [OK]" +else + echo "drivers/sdsi: [FAIL]" + exit 1 +fi diff --git a/tools/testing/selftests/drivers/sdsi/sdsi_test.py b/tools/testing/selftests/drivers/sdsi/sdsi_test.py new file mode 100644 index 000000000..5efb29fee --- /dev/null +++ b/tools/testing/selftests/drivers/sdsi/sdsi_test.py @@ -0,0 +1,226 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from struct import pack +from time import sleep + +import errno +import glob +import os +import subprocess + +try: + import pytest +except ImportError: + print("Unable to import pytest python module.") + print("\nIf not already installed, you may do so with:") + print("\t\tpip3 install pytest") + exit(1) + +SOCKETS = glob.glob('/sys/bus/auxiliary/devices/intel_vsec.sdsi.*') +NUM_SOCKETS = len(SOCKETS) + +MODULE_NAME = 'intel_sdsi' +DEV_PREFIX = 'intel_vsec.sdsi' +CLASS_DIR = '/sys/bus/auxiliary/devices' +GUID = "0x6dd191" + +def read_bin_file(file): + with open(file, mode='rb') as f: + content = f.read() + return content + +def get_dev_file_path(socket, file): + return CLASS_DIR + '/' + DEV_PREFIX + '.' + str(socket) + '/' + file + +def kmemleak_enabled(): + kmemleak = "/sys/kernel/debug/kmemleak" + return os.path.isfile(kmemleak) + +class TestSDSiDriver: + def test_driver_loaded(self): + lsmod_p = subprocess.Popen(('lsmod'), stdout=subprocess.PIPE) + result = subprocess.check_output(('grep', '-q', MODULE_NAME), stdin=lsmod_p.stdout) + +@pytest.mark.parametrize('socket', range(0, NUM_SOCKETS)) +class TestSDSiFilesClass: + + def read_value(self, file): + f = open(file, "r") + value = f.read().strip("\n") + return value + + def get_dev_folder(self, socket): + return CLASS_DIR + '/' + DEV_PREFIX + '.' + str(socket) + '/' + + def test_sysfs_files_exist(self, socket): + folder = self.get_dev_folder(socket) + print (folder) + assert os.path.isfile(folder + "guid") == True + assert os.path.isfile(folder + "provision_akc") == True + assert os.path.isfile(folder + "provision_cap") == True + assert os.path.isfile(folder + "state_certificate") == True + assert os.path.isfile(folder + "registers") == True + + def test_sysfs_file_permissions(self, socket): + folder = self.get_dev_folder(socket) + mode = os.stat(folder + "guid").st_mode & 0o777 + assert mode == 0o444 # Read all + mode = os.stat(folder + "registers").st_mode & 0o777 + assert mode == 0o400 # Read owner + mode = os.stat(folder + "provision_akc").st_mode & 0o777 + assert mode == 0o200 # Read owner + mode = os.stat(folder + "provision_cap").st_mode & 0o777 + assert mode == 0o200 # Read owner + mode = os.stat(folder + "state_certificate").st_mode & 0o777 + assert mode == 0o400 # Read owner + + def test_sysfs_file_ownership(self, socket): + folder = self.get_dev_folder(socket) + + st = os.stat(folder + "guid") + assert st.st_uid == 0 + assert st.st_gid == 0 + + st = os.stat(folder + "registers") + assert st.st_uid == 0 + assert st.st_gid == 0 + + st = os.stat(folder + "provision_akc") + assert st.st_uid == 0 + assert st.st_gid == 0 + + st = os.stat(folder + "provision_cap") + assert st.st_uid == 0 + assert st.st_gid == 0 + + st = os.stat(folder + "state_certificate") + assert st.st_uid == 0 + assert st.st_gid == 0 + + def test_sysfs_file_sizes(self, socket): + folder = self.get_dev_folder(socket) + + if self.read_value(folder + "guid") == GUID: + st = os.stat(folder + "registers") + assert st.st_size == 72 + + st = os.stat(folder + "provision_akc") + assert st.st_size == 1024 + + st = os.stat(folder + "provision_cap") + assert st.st_size == 1024 + + st = os.stat(folder + "state_certificate") + assert st.st_size == 4096 + + def test_no_seek_allowed(self, socket): + folder = self.get_dev_folder(socket) + rand_file = bytes(os.urandom(8)) + + f = open(folder + "provision_cap", "wb", 0) + f.seek(1) + with pytest.raises(OSError) as error: + f.write(rand_file) + assert error.value.errno == errno.ESPIPE + f.close() + + f = open(folder + "provision_akc", "wb", 0) + f.seek(1) + with pytest.raises(OSError) as error: + f.write(rand_file) + assert error.value.errno == errno.ESPIPE + f.close() + + def test_registers_seek(self, socket): + folder = self.get_dev_folder(socket) + + # Check that the value read from an offset of the entire + # file is none-zero and the same as the value read + # from seeking to the same location + f = open(folder + "registers", "rb") + data = f.read() + f.seek(64) + id = f.read() + assert id != bytes(0) + assert data[64:] == id + f.close() + +@pytest.mark.parametrize('socket', range(0, NUM_SOCKETS)) +class TestSDSiMailboxCmdsClass: + def test_provision_akc_eoverflow_1017_bytes(self, socket): + + # The buffer for writes is 1k, of with 8 bytes must be + # reserved for the command, leaving 1016 bytes max. + # Check that we get an overflow error for 1017 bytes. + node = get_dev_file_path(socket, "provision_akc") + rand_file = bytes(os.urandom(1017)) + + f = open(node, 'wb', 0) + with pytest.raises(OSError) as error: + f.write(rand_file) + assert error.value.errno == errno.EOVERFLOW + f.close() + +@pytest.mark.parametrize('socket', range(0, NUM_SOCKETS)) +class TestSdsiDriverLocksClass: + def test_enodev_when_pci_device_removed(self, socket): + node = get_dev_file_path(socket, "provision_akc") + dev_name = DEV_PREFIX + '.' + str(socket) + driver_dir = CLASS_DIR + '/' + dev_name + "/driver/" + rand_file = bytes(os.urandom(8)) + + f = open(node, 'wb', 0) + g = open(node, 'wb', 0) + + with open(driver_dir + 'unbind', 'w') as k: + print(dev_name, file = k) + + with pytest.raises(OSError) as error: + f.write(rand_file) + assert error.value.errno == errno.ENODEV + + with pytest.raises(OSError) as error: + g.write(rand_file) + assert error.value.errno == errno.ENODEV + + f.close() + g.close() + + # Short wait needed to allow file to close before pulling driver + sleep(1) + + p = subprocess.Popen(('modprobe', '-r', 'intel_sdsi')) + p.wait() + p = subprocess.Popen(('modprobe', '-r', 'intel_vsec')) + p.wait() + p = subprocess.Popen(('modprobe', 'intel_vsec')) + p.wait() + + # Short wait needed to allow driver time to get inserted + # before continuing tests + sleep(1) + + def test_memory_leak(self, socket): + if not kmemleak_enabled(): + pytest.skip("kmemleak not enabled in kernel") + + dev_name = DEV_PREFIX + '.' + str(socket) + driver_dir = CLASS_DIR + '/' + dev_name + "/driver/" + + with open(driver_dir + 'unbind', 'w') as k: + print(dev_name, file = k) + + sleep(1) + + subprocess.check_output(('modprobe', '-r', 'intel_sdsi')) + subprocess.check_output(('modprobe', '-r', 'intel_vsec')) + + with open('/sys/kernel/debug/kmemleak', 'w') as f: + print('scan', file = f) + sleep(5) + + assert os.stat('/sys/kernel/debug/kmemleak').st_size == 0 + + subprocess.check_output(('modprobe', 'intel_vsec')) + sleep(1) |