From patchwork Tue Dec 7 17:14:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "David E. Box" X-Patchwork-Id: 12662331 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4DAF2C433EF for ; Tue, 7 Dec 2021 17:17:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239920AbhLGRUo (ORCPT ); Tue, 7 Dec 2021 12:20:44 -0500 Received: from mga17.intel.com ([192.55.52.151]:51627 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239905AbhLGRUo (ORCPT ); Tue, 7 Dec 2021 12:20:44 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10190"; a="218312485" X-IronPort-AV: E=Sophos;i="5.87,293,1631602800"; d="scan'208";a="218312485" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Dec 2021 09:14:51 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,293,1631602800"; d="scan'208";a="461341085" Received: from linux.intel.com ([10.54.29.200]) by orsmga003.jf.intel.com with ESMTP; 07 Dec 2021 09:14:50 -0800 Received: from debox1-desk4.hsd1.or.comcast.net (unknown [10.251.18.198]) by linux.intel.com (Postfix) with ESMTP id 905C45804B4; Tue, 7 Dec 2021 09:14:50 -0800 (PST) From: "David E. Box" To: lee.jones@linaro.org, hdegoede@redhat.com, david.e.box@linux.intel.com, bhelgaas@google.com, gregkh@linuxfoundation.org, andriy.shevchenko@linux.intel.com, srinivas.pandruvada@intel.com, shuah@kernel.org, mgross@linux.intel.com Cc: linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pci@vger.kernel.org Subject: [V2 6/6] selftests: sdsi: test sysfs setup Date: Tue, 7 Dec 2021 09:14:48 -0800 Message-Id: <20211207171448.799376-7-david.e.box@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211207171448.799376-1-david.e.box@linux.intel.com> References: <20211207171448.799376-1-david.e.box@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org Tests file configuration and error handling of the Intel Software Defined Silicon sysfs ABI. Signed-off-by: David E. Box --- V2 - New patch MAINTAINERS | 1 + tools/testing/selftests/drivers/sdsi/sdsi.sh | 18 ++ .../selftests/drivers/sdsi/sdsi_test.py | 166 ++++++++++++++++++ 3 files changed, 185 insertions(+) create mode 100755 tools/testing/selftests/drivers/sdsi/sdsi.sh create mode 100644 tools/testing/selftests/drivers/sdsi/sdsi_test.py diff --git a/MAINTAINERS b/MAINTAINERS index ba9603fb7f62..3bc2a7bff168 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9788,6 +9788,7 @@ M: David E. Box S: Supported F: drivers/platform/x86/intel/sdsi.c F: samples/sdsi/ +F: tools/testing/selftests/drivers/sdsi/ INTEL SKYLAKE INT3472 ACPI DEVICE DRIVER M: Daniel Scally diff --git a/tools/testing/selftests/drivers/sdsi/sdsi.sh b/tools/testing/selftests/drivers/sdsi/sdsi.sh new file mode 100755 index 000000000000..8db71961d164 --- /dev/null +++ b/tools/testing/selftests/drivers/sdsi/sdsi.sh @@ -0,0 +1,18 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# Runs tests for the intel_sdsi driver + +if ! /sbin/modprobe -q -r intel_sdsi; then + echo "drivers/sdsi: [SKIP]" + exit 77 +fi + +if /sbin/modprobe -q intel_sdsi; then + python3 -m pytest sdsi_test.py + /sbin/modprobe -q -r intel_sdsi + + 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 000000000000..fc99d9c23f51 --- /dev/null +++ b/tools/testing/selftests/drivers/sdsi/sdsi_test.py @@ -0,0 +1,166 @@ +#!/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 = '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 + +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 + "state_certificate", "rb") + f.seek(1) + with pytest.raises(OSError) as error: + f.read() + assert error.value.errno == errno.ESPIPE + f.close() + + 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()