From patchwork Mon Jan 22 18:53:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Patchwork-Id: 764751 Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7AC4147F62; Mon, 22 Jan 2024 18:55:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.235.227.194 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705949753; cv=none; b=P9HSwjBEn84HwWiXvNB+xv1VjrRolDPqQcfQg/MxIdhNZvQtul5LgMs+nMpJ5yN73nJkANXwhBkG2rgCFgg3mk6/tGd9dmOYIyKAAas2e3rz3dxfIUsHt9tfBSqdSA8P2HJ4cKxDUAipiz6SqO4FX5DMS/Gs66Tu8HjqptCDtbM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705949753; c=relaxed/simple; bh=CH6ZhxD7XoY0ve6GzYz7f9qdSoMneGCwVwJy38GwXxw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=BHRct5toAh/eDGKDQmDMfzgKQXzF1qQqHlVmGF49+O30eepBNpc7p60J38DdIodl8JOsgcF2FMtm7rhZRumw09YU8s/4NDRniUDkR7qgWmoVk9CD1Vbr4o73fCbT5GjWC746mpTNuWtw7vSITn521YXY0PSUkYX52DpvRiYGMkM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=NTcKr6CZ; arc=none smtp.client-ip=46.235.227.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="NTcKr6CZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1705949750; bh=CH6ZhxD7XoY0ve6GzYz7f9qdSoMneGCwVwJy38GwXxw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=NTcKr6CZfOucBLSxH3BaJAnQa4458PaqcOltZiVtcdUqaIYFpyKp9v74gVNRkm1Eu dsiLQprEV62xAmiwx3Buk5PLzj7d8Vl5trGHAW+BLC84ESvF/WwKhxiOIBlZizy2e9 ePauGemBww9fAtv/1RiMSC6VWagWxfYpPFU2+JhDq9fGbHS8olYWf8kNHm2ATEta+d OBifDk1ZOrWSPguCXkaP4E6Cxat+QAX5mYuIBSTmulKfAok8GHAJ/yzeg1nh/ijzqn SNUFxpDYpbNJDrctLjo9Ks5auaR//pTZ7yKgJuQgY443MiryVjZ+LW7iioVtGtts5b xt/2DZiGGR+0g== Received: from [192.168.0.47] (zone.collabora.co.uk [167.235.23.81]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nfraprado) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 948F737820A6; Mon, 22 Jan 2024 18:55:44 +0000 (UTC) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Mon, 22 Jan 2024 15:53:21 -0300 Subject: [PATCH v4 1/3] kselftest: Add test to verify probe of devices from discoverable buses Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240122-discoverable-devs-ksft-v4-1-d602e1df4aa2@collabora.com> References: <20240122-discoverable-devs-ksft-v4-0-d602e1df4aa2@collabora.com> In-Reply-To: <20240122-discoverable-devs-ksft-v4-0-d602e1df4aa2@collabora.com> To: Shuah Khan , Greg Kroah-Hartman , Bjorn Helgaas Cc: kernelci@lists.linux.dev, kernel@collabora.com, Tim Bird , linux-pci@vger.kernel.org, David Gow , linux-kselftest@vger.kernel.org, Rob Herring , Doug Anderson , linux-usb@vger.kernel.org, Saravana Kannan , Dan Carpenter , Guenter Roeck , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Mailer: b4 0.12.4 Add a new test to verify that a list of expected devices from discoverable buses (ie USB, PCI) have been successfully instantiated and probed by a driver. The per-platform list of expected devices is selected from the ones under the boards/ directory based on the DT compatible or the DMI IDs. Signed-off-by: Nícolas F. R. A. Prado --- tools/testing/selftests/Makefile | 1 + tools/testing/selftests/devices/Makefile | 4 + tools/testing/selftests/devices/ksft.py | 90 ++++++ .../selftests/devices/test_discoverable_devices.py | 318 +++++++++++++++++++++ 4 files changed, 413 insertions(+) diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 15b6a111c3be..a7858126c7c5 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -13,6 +13,7 @@ TARGETS += core TARGETS += cpufreq TARGETS += cpu-hotplug TARGETS += damon +TARGETS += devices TARGETS += dmabuf-heaps TARGETS += drivers/dma-buf TARGETS += drivers/s390x/uvdevice diff --git a/tools/testing/selftests/devices/Makefile b/tools/testing/selftests/devices/Makefile new file mode 100644 index 000000000000..ca29249b30c3 --- /dev/null +++ b/tools/testing/selftests/devices/Makefile @@ -0,0 +1,4 @@ +TEST_PROGS := test_discoverable_devices.py +TEST_FILES := boards ksft.py + +include ../lib.mk diff --git a/tools/testing/selftests/devices/ksft.py b/tools/testing/selftests/devices/ksft.py new file mode 100644 index 000000000000..cd89fb2bc10e --- /dev/null +++ b/tools/testing/selftests/devices/ksft.py @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) 2023 Collabora Ltd +# +# Kselftest helpers for outputting in KTAP format. Based on kselftest.h. +# + +import sys + +ksft_cnt = {"pass": 0, "fail": 0, "skip": 0} +ksft_num_tests = 0 +ksft_test_number = 1 + +KSFT_PASS = 0 +KSFT_FAIL = 1 +KSFT_SKIP = 4 + + +def print_header(): + print("TAP version 13") + + +def set_plan(num_tests): + global ksft_num_tests + ksft_num_tests = num_tests + print("1..{}".format(num_tests)) + + +def print_cnts(): + print( + f"# Totals: pass:{ksft_cnt['pass']} fail:{ksft_cnt['fail']} xfail:0 xpass:0 skip:{ksft_cnt['skip']} error:0" + ) + + +def print_msg(msg): + print(f"# {msg}") + + +def _test_print(result, description, directive=None): + if directive: + directive_str = f"# {directive}" + else: + directive_str = "" + + global ksft_test_number + print(f"{result} {ksft_test_number} {description} {directive_str}") + ksft_test_number += 1 + + +def test_result_pass(description): + _test_print("ok", description) + ksft_cnt["pass"] += 1 + + +def test_result_fail(description): + _test_print("not ok", description) + ksft_cnt["fail"] += 1 + + +def test_result_skip(description): + _test_print("ok", description, "SKIP") + ksft_cnt["skip"] += 1 + + +def test_result(condition, description=""): + if condition: + test_result_pass(description) + else: + test_result_fail(description) + + +def finished(): + if ksft_cnt["pass"] == ksft_num_tests: + exit_code = KSFT_PASS + else: + exit_code = KSFT_FAIL + + print_cnts() + + sys.exit(exit_code) + + +def exit_fail(): + print_cnts() + sys.exit(KSFT_FAIL) + + +def exit_pass(): + print_cnts() + sys.exit(KSFT_PASS) diff --git a/tools/testing/selftests/devices/test_discoverable_devices.py b/tools/testing/selftests/devices/test_discoverable_devices.py new file mode 100755 index 000000000000..fbae8deb593d --- /dev/null +++ b/tools/testing/selftests/devices/test_discoverable_devices.py @@ -0,0 +1,318 @@ +#!/usr/bin/python3 +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (c) 2023 Collabora Ltd +# +# This script tests for presence and driver binding of devices from discoverable +# buses (ie USB, PCI). +# +# The per-platform YAML file defining the devices to be tested is stored inside +# the boards/ directory and chosen based on DT compatible or DMI IDs (sys_vendor +# and product_name). +# +# See boards/google,spherion.yaml and boards/'Dell Inc.,XPS 13 9300.yaml' for +# the description and examples of the file structure and vocabulary. +# + +import glob +import ksft +import os +import re +import sys +import yaml + +pci_controllers = [] +usb_controllers = [] + +sysfs_usb_devices = "/sys/bus/usb/devices/" + + +def find_pci_controller_dirs(): + sysfs_devices = "/sys/devices" + pci_controller_sysfs_dir = "pci[0-9a-f]{4}:[0-9a-f]{2}" + + dir_regex = re.compile(pci_controller_sysfs_dir) + for path, dirs, _ in os.walk(sysfs_devices): + for d in dirs: + if dir_regex.match(d): + pci_controllers.append(os.path.join(path, d)) + + +def find_usb_controller_dirs(): + usb_controller_sysfs_dir = "usb[\d]+" + + dir_regex = re.compile(usb_controller_sysfs_dir) + for d in os.scandir(sysfs_usb_devices): + if dir_regex.match(d.name): + usb_controllers.append(os.path.realpath(d.path)) + + +def get_dt_mmio(sysfs_dev_dir): + re_dt_mmio = re.compile("OF_FULLNAME=.*@([0-9a-f]+)") + dt_mmio = None + + # PCI controllers' sysfs don't have an of_node, so have to read it from the + # parent + while not dt_mmio: + try: + with open(os.path.join(sysfs_dev_dir, "uevent")) as f: + dt_mmio = re_dt_mmio.search(f.read()).group(1) + return dt_mmio + except: + pass + sysfs_dev_dir = os.path.dirname(sysfs_dev_dir) + + +def get_acpi_uid(sysfs_dev_dir): + with open(os.path.join(sysfs_dev_dir, "firmware_node", "uid")) as f: + return f.read() + + +def get_usb_version(sysfs_dev_dir): + re_usb_version = re.compile("PRODUCT=.*/(\d)/.*") + with open(os.path.join(sysfs_dev_dir, "uevent")) as f: + return int(re_usb_version.search(f.read()).group(1)) + + +def get_usb_busnum(sysfs_dev_dir): + re_busnum = re.compile("BUSNUM=(.*)") + with open(os.path.join(sysfs_dev_dir, "uevent")) as f: + return int(re_busnum.search(f.read()).group(1)) + + +def find_controller_in_sysfs(controller, parent_sysfs=None): + if controller["type"] == "pci-controller": + controllers = pci_controllers + elif controller["type"] == "usb-controller": + controllers = usb_controllers + + result_controllers = [] + + for c in controllers: + if parent_sysfs and parent_sysfs not in c: + continue + + if controller.get("dt-mmio"): + if str(controller["dt-mmio"]) != get_dt_mmio(c): + continue + + if controller.get("usb-version"): + if controller["usb-version"] != get_usb_version(c): + continue + + if controller.get("acpi-uid"): + if controller["acpi-uid"] != get_acpi_uid(c): + continue + + result_controllers.append(c) + + return result_controllers + + +def is_controller(device): + return device.get("type") and "controller" in device.get("type") + + +def path_to_dir(parent_sysfs, dev_type, path): + if dev_type == "usb-device": + usb_dev_sysfs_fmt = "{}-{}" + busnum = get_usb_busnum(parent_sysfs) + dirname = os.path.join( + sysfs_usb_devices, usb_dev_sysfs_fmt.format(busnum, path) + ) + return [os.path.realpath(dirname)] + else: + pci_dev_sysfs_fmt = "????:??:{}" + path_glob = "" + for dev_func in path.split("/"): + dev_func = dev_func.zfill(4) + path_glob = os.path.join(path_glob, pci_dev_sysfs_fmt.format(dev_func)) + + dir_list = glob.glob(os.path.join(parent_sysfs, path_glob)) + + return dir_list + + +def find_in_sysfs(device, parent_sysfs=None): + if parent_sysfs and device.get("path"): + pathdirs = path_to_dir( + parent_sysfs, device["meta"]["type"], str(device["path"]) + ) + if len(pathdirs) != 1: + # Early return to report error + return pathdirs + pathdir = pathdirs[0] + sysfs_path = os.path.join(parent_sysfs, pathdir) + else: + sysfs_path = parent_sysfs + + if is_controller(device): + return find_controller_in_sysfs(device, sysfs_path) + else: + return [sysfs_path] + + +def check_driver_presence(sysfs_dir, current_node): + if current_node["meta"]["type"] == "usb-device": + usb_intf_fmt = "*-*:*.{}" + + interfaces = [] + for i in current_node["interfaces"]: + interfaces.append((i, usb_intf_fmt.format(i))) + + for intf_num, intf_dir_fmt in interfaces: + test_name = f"{current_node['meta']['pathname']}.{intf_num}.driver" + + intf_dirs = glob.glob(os.path.join(sysfs_dir, intf_dir_fmt)) + if len(intf_dirs) != 1: + ksft.test_result_fail(test_name) + continue + intf_dir = intf_dirs[0] + + driver_link = os.path.join(sysfs_dir, intf_dir, "driver") + ksft.test_result(os.path.isdir(driver_link), test_name) + else: + driver_link = os.path.join(sysfs_dir, "driver") + test_name = current_node["meta"]["pathname"] + ".driver" + ksft.test_result(os.path.isdir(driver_link), test_name) + + +def generate_pathname(device): + pathname = "" + + if device.get("path"): + pathname = str(device["path"]) + + if device.get("type"): + dev_type = device["type"] + if device.get("usb-version"): + dev_type = dev_type.replace("usb", "usb" + str(device["usb-version"])) + if device.get("acpi-uid") is not None: + dev_type = dev_type.replace("pci", "pci" + str(device["acpi-uid"])) + pathname = pathname + "/" + dev_type + + if device.get("dt-mmio"): + pathname += "@" + str(device["dt-mmio"]) + + if device.get("name"): + pathname = pathname + "/" + device["name"] + + return pathname + + +def fill_meta_keys(child, parent=None): + child["meta"] = {} + + if parent: + child["meta"]["type"] = parent["type"].replace("controller", "device") + + pathname = generate_pathname(child) + if parent: + pathname = parent["meta"]["pathname"] + "/" + pathname + child["meta"]["pathname"] = pathname + + +def parse_device_tree_node(current_node, parent_sysfs=None): + if not parent_sysfs: + fill_meta_keys(current_node) + + sysfs_dirs = find_in_sysfs(current_node, parent_sysfs) + if len(sysfs_dirs) != 1: + if len(sysfs_dirs) == 0: + ksft.test_result_fail( + f"Couldn't find in sysfs: {current_node['meta']['pathname']}" + ) + else: + ksft.test_result_fail( + f"Found multiple sysfs entries for {current_node['meta']['pathname']}: {sysfs_dirs}" + ) + return + sysfs_dir = sysfs_dirs[0] + + if not is_controller(current_node): + ksft.test_result( + os.path.exists(sysfs_dir), current_node["meta"]["pathname"] + ".device" + ) + check_driver_presence(sysfs_dir, current_node) + else: + for child_device in current_node["devices"]: + fill_meta_keys(child_device, current_node) + parse_device_tree_node(child_device, sysfs_dir) + + +def count_tests(device_trees): + test_count = 0 + + def parse_node(device): + nonlocal test_count + if device.get("devices"): + for child in device["devices"]: + parse_node(child) + else: + if device.get("interfaces"): + test_count += len(device["interfaces"]) + else: + test_count += 1 + test_count += 1 + + for device_tree in device_trees: + parse_node(device_tree) + + return test_count + + +def get_board_filenames(): + filenames = [] + + platform_compatible_file = "/proc/device-tree/compatible" + if os.path.exists(platform_compatible_file): + with open(platform_compatible_file) as f: + for line in f: + filenames.extend(line.split("\0")) + else: + dmi_id_dir = "/sys/devices/virtual/dmi/id" + vendor_dmi_file = os.path.join(dmi_id_dir, "sys_vendor") + product_dmi_file = os.path.join(dmi_id_dir, "product_name") + + with open(vendor_dmi_file) as f: + vendor = f.read().replace("\n", "") + with open(product_dmi_file) as f: + product = f.read().replace("\n", "") + + filenames = [vendor + "," + product] + + return filenames + + +def run_test(yaml_file): + ksft.print_msg(f"Using board file: {yaml_file}") + + with open(yaml_file) as f: + device_trees = yaml.safe_load(f) + + ksft.set_plan(count_tests(device_trees)) + + for device_tree in device_trees: + parse_device_tree_node(device_tree) + + +find_pci_controller_dirs() +find_usb_controller_dirs() + +ksft.print_header() + +board_file = "" +for board_filename in get_board_filenames(): + full_board_filename = os.path.join("boards", board_filename + ".yaml") + + if 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certificate requested) (Authenticated sender: nfraprado) by madrid.collaboradmins.com (Postfix) with ESMTPSA id AABFF37820A7; Mon, 22 Jan 2024 18:55:56 +0000 (UTC) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Mon, 22 Jan 2024 15:53:23 -0300 Subject: [PATCH v4 3/3] kselftest: devices: Add sample board file for XPS 13 9300 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240122-discoverable-devs-ksft-v4-3-d602e1df4aa2@collabora.com> References: <20240122-discoverable-devs-ksft-v4-0-d602e1df4aa2@collabora.com> In-Reply-To: <20240122-discoverable-devs-ksft-v4-0-d602e1df4aa2@collabora.com> To: Shuah Khan , Greg Kroah-Hartman , Bjorn Helgaas Cc: kernelci@lists.linux.dev, kernel@collabora.com, Tim Bird , linux-pci@vger.kernel.org, David Gow , linux-kselftest@vger.kernel.org, Rob Herring , Doug Anderson , linux-usb@vger.kernel.org, Saravana Kannan , Dan Carpenter , Guenter Roeck , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Mailer: b4 0.12.4 Add a sample board file describing the file's format and with the list of devices expected to be probed on the XPS 13 9300 machine as an example x86 platform. Test output: TAP version 13 Using board file: boards/Dell Inc.,XPS 13 9300.yaml 1..22 ok 1 /pci-controller/14.0/usb2-controller/9/camera.device ok 2 /pci-controller/14.0/usb2-controller/9/camera.0.driver ok 3 /pci-controller/14.0/usb2-controller/9/camera.1.driver ok 4 /pci-controller/14.0/usb2-controller/9/camera.2.driver ok 5 /pci-controller/14.0/usb2-controller/9/camera.3.driver ok 6 /pci-controller/14.0/usb2-controller/10/bluetooth.device ok 7 /pci-controller/14.0/usb2-controller/10/bluetooth.0.driver ok 8 /pci-controller/14.0/usb2-controller/10/bluetooth.1.driver ok 9 /pci-controller/2.0/gpu.device ok 10 /pci-controller/2.0/gpu.driver ok 11 /pci-controller/4.0/thermal.device ok 12 /pci-controller/4.0/thermal.driver ok 13 /pci-controller/12.0/sensors.device ok 14 /pci-controller/12.0/sensors.driver ok 15 /pci-controller/14.3/wifi.device ok 16 /pci-controller/14.3/wifi.driver ok 17 /pci-controller/1d.0/0.0/ssd.device ok 18 /pci-controller/1d.0/0.0/ssd.driver ok 19 /pci-controller/1d.7/0.0/sdcard-reader.device ok 20 /pci-controller/1d.7/0.0/sdcard-reader.driver ok 21 /pci-controller/1f.3/audio.device ok 22 /pci-controller/1f.3/audio.driver Totals: pass:22 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Nícolas F. R. A. Prado --- .../devices/boards/Dell Inc.,XPS 13 9300.yaml | 40 ++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/tools/testing/selftests/devices/boards/Dell Inc.,XPS 13 9300.yaml b/tools/testing/selftests/devices/boards/Dell Inc.,XPS 13 9300.yaml new file mode 100644 index 000000000000..ff932eb19f0b --- /dev/null +++ b/tools/testing/selftests/devices/boards/Dell Inc.,XPS 13 9300.yaml @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# This is the device definition for the XPS 13 9300. +# The filename "Dell Inc.,XPS 13 9300" was chosen following the format +# "Vendor,Product", where Vendor comes from +# /sys/devices/virtual/dmi/id/sys_vendor, and Product comes from +# /sys/devices/virtual/dmi/id/product_name. +# +# See google,spherion.yaml for more information. +# +- type: pci-controller + # This machine has a single PCI host controller so it's valid to not have any + # key to identify the controller. If it had more than one controller, the UID + # of the controller from ACPI could be used to distinguish as follows: + #acpi-uid: 0 + devices: + - path: 14.0 + type: usb-controller + usb-version: 2 + devices: + - path: 9 + name: camera + interfaces: [0, 1, 2, 3] + - path: 10 + name: bluetooth + interfaces: [0, 1] + - path: 2.0 + name: gpu + - path: 4.0 + name: thermal + - path: 12.0 + name: sensors + - path: 14.3 + name: wifi + - path: 1d.0/0.0 + name: ssd + - path: 1d.7/0.0 + name: sdcard-reader + - path: 1f.3 + name: audio