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Miller" CC: John Allen , , , Mario Limonciello Subject: [PATCH v3 08/10] crypto: ccp: Add a sample script for Dynamic Boost Control Date: Thu, 18 May 2023 22:24:46 -0500 Message-ID: <20230519032448.94279-9-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230519032448.94279-1-mario.limonciello@amd.com> References: <20230519032448.94279-1-mario.limonciello@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT082:EE_|MN2PR12MB4176:EE_ X-MS-Office365-Filtering-Correlation-Id: aff85af8-8230-4d5a-a965-08db588e8d3c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: FVc98Np0Dt3Agp2ph3WPy1MPP+RXbi1gas5OyErY6SEY8S5du0CzSXedhLm5w8ilrHhj8oHXJbGi5c3xY+cBA94AwT+shLKOrdc9bPhY67czt00lrxa83Ew4/0s6fma70/AqgqqgYr5WeBU4vaG8iByNg7EsSLahGz3XeqZ1BLXDgdFi50gcYvFu898exGioyvsGIEM2OCFrFuxIseHWovmrUyzbABTus2HiT7+Y7bCCWrJUVHLFFaa+Lq6+aIkJMbLZMDbrWnPV7evVxXFTkfbZSHq2rgd+uvxX69LRMAr6xOApaHlEf3ykPF/EOeULqXQjaWGxXA8x69uZ25117fNXz8Du5QCVBRSHRPgX5UmDAk+jwCn5KQmy6NU1OffcijR9zCKBOeC1/WjAfPl7/Ahy5dAJhsM01AgL65J+5vu3fUHbugzPs7pMNjxHcIRMQbX9PatYdWmDAG7ZzvTEsxFM6CJoGSqZ2AJWejmxYmp8vKAYJU2LCBXIYpCn7XKe276T+sZhLldwNrpf+s+Wd6+Zu7BgmBeoEprxCXmLAzixI4617TISKIF/zAYUoedRD3DszOiCbu9XYx3acwA9ouVR6qaVeoigbWPeV1pvxllKLMcVWYJE7RHqmB3ix3+wVU0YVxY9wP5chINOgknHkOSrqce7f8G4gES02zowwwXW5qrt/GnsJRyu19/1tgb6kKE/Eou3zv5viwxDGNfy5YWVWypgo0Ai4b/qUZE4zdPIkXt7B29B+bL8PIepW88OGGPIOorh/K1x8lbRFEOWXQ== X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230028)(4636009)(376002)(346002)(39860400002)(396003)(136003)(451199021)(40470700004)(46966006)(36840700001)(86362001)(2906002)(16526019)(70586007)(70206006)(186003)(26005)(1076003)(54906003)(478600001)(36756003)(110136005)(40480700001)(40460700003)(6666004)(7696005)(356005)(81166007)(82310400005)(2616005)(47076005)(426003)(336012)(41300700001)(44832011)(36860700001)(83380400001)(8676002)(5660300002)(8936002)(82740400003)(4326008)(316002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 May 2023 17:29:08.0439 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: aff85af8-8230-4d5a-a965-08db588e8d3c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT082.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4176 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Dynamic Boost Control is utilized by userspace with a collection of 2 R/W IOCTLs and 1 W IOCTL. Userspace needs to prepare buffers with the appropriate signature data and details of the request. To allow rapid prototyping and testing this interface, add a python3 command line script that can validate the functionality of these IOCTLs. NOTE: This script does *not* generate signatures. They will need to be prepared separately and passed as arguments. Signed-off-by: Mario Limonciello --- tools/crypto/ccp/.gitignore | 1 + tools/crypto/ccp/dbc.py | 98 ++++++++++++++++++++++++++++ tools/crypto/ccp/dbc_cli.py | 123 ++++++++++++++++++++++++++++++++++++ 3 files changed, 222 insertions(+) create mode 100644 tools/crypto/ccp/.gitignore create mode 100644 tools/crypto/ccp/dbc.py create mode 100755 tools/crypto/ccp/dbc_cli.py diff --git a/tools/crypto/ccp/.gitignore b/tools/crypto/ccp/.gitignore new file mode 100644 index 000000000000..bee8a64b79a9 --- /dev/null +++ b/tools/crypto/ccp/.gitignore @@ -0,0 +1 @@ +__pycache__ diff --git a/tools/crypto/ccp/dbc.py b/tools/crypto/ccp/dbc.py new file mode 100644 index 000000000000..f1b7342060b1 --- /dev/null +++ b/tools/crypto/ccp/dbc.py @@ -0,0 +1,98 @@ +#!/usr/bin/python3 +# SPDX-License-Identifier: GPL-2.0 + +from ioctl_opt import IOWR, IOW +import ctypes +import fcntl + +DBC_UID_SIZE = 16 +DBC_NONCE_SIZE = 16 +DBC_SIG_SIZE = 32 + +PARAM_GET_FMAX_CAP = (0x3,) +PARAM_SET_FMAX_CAP = (0x4,) +PARAM_GET_PWR_CAP = (0x5,) +PARAM_SET_PWR_CAP = (0x6,) +PARAM_GET_GFX_MODE = (0x7,) +PARAM_SET_GFX_MODE = (0x8,) +PARAM_GET_CURR_TEMP = (0x9,) +PARAM_GET_FMAX_MAX = (0xA,) +PARAM_GET_FMAX_MIN = (0xB,) +PARAM_GET_SOC_PWR_MAX = (0xC,) +PARAM_GET_SOC_PWR_MIN = (0xD,) +PARAM_GET_SOC_PWR_CUR = (0xE,) + +DEVICE_NODE = "/dev/dbc" + + +class _dbc_get_nonce(ctypes.Structure): + _fields_ = [ + ("auth_needed", ctypes.c_uint32), + ("nonce", ctypes.c_uint8 * DBC_NONCE_SIZE), + ("signature", ctypes.c_uint8 * DBC_SIG_SIZE), + ] + + +class _dbc_set_uid(ctypes.Structure): + _fields_ = [ + ("uid", ctypes.c_uint8 * DBC_UID_SIZE), + ("signature", ctypes.c_uint8 * DBC_SIG_SIZE), + ] + + +class _dbc_param(ctypes.Structure): + _fields_ = [ + ("msg_index", ctypes.c_uint32), + ("parameter", ctypes.c_uint32), + ("signature", ctypes.c_uint8 * DBC_SIG_SIZE), + ] + + +DBCIOCNONCE = IOWR(ord("D"), 0x01, _dbc_get_nonce) +DBCIOCUID = IOW(ord("D"), 0x02, _dbc_set_uid) +DBCIOCPARAM = IOWR(ord("D"), 0x03, _dbc_param) + + +def get_nonce(device, signature): + nonce = _dbc_get_nonce() + if signature: + nonce.auth_needed = 1 + tmp = ctypes.c_ubyte * len(signature) + nonce.signature = tmp.from_buffer_copy(bytes(signature, "ascii")) + result = fcntl.ioctl(device, DBCIOCNONCE, nonce, True) + if result < 0: + raise IOError(result) + return nonce + + +def set_uid(device, new_uid, signature): + uid = _dbc_set_uid() + if not signature: + raise ValueError("Signature required") + if not new_uid: + raise ValueError("UID required") + tmp = ctypes.c_ubyte * len(signature) + tmp2 = ctypes.c_ubyte * len(new_uid) + uid.signature = tmp.from_buffer_copy(bytes(signature, "ascii")) + uid.uid = tmp2.from_buffer_copy(bytes(new_uid, "ascii")) + result = fcntl.ioctl(device, DBCIOCUID, uid, True) + if result < 0: + raise IOError(result) + return True + + +def process_param(device, message, signature, data=None): + param = _dbc_param() + if not signature: + raise ValueError("Signature required") + if type(message) != tuple: + raise ValueError("Expected message tuple") + tmp = ctypes.c_ubyte * len(signature) + param.signature = tmp.from_buffer_copy(bytes(signature, "ascii")) + param.msg_index = message[0] + if data: + param.parameter = data + result = fcntl.ioctl(device, DBCIOCPARAM, param, True) + if result < 0: + raise IOError(result) + return param diff --git a/tools/crypto/ccp/dbc_cli.py b/tools/crypto/ccp/dbc_cli.py new file mode 100755 index 000000000000..2dbefc2b7ed3 --- /dev/null +++ b/tools/crypto/ccp/dbc_cli.py @@ -0,0 +1,123 @@ +#!/usr/bin/python3 +# SPDX-License-Identifier: GPL-2.0 +import argparse +import binascii +import os +import errno +from dbc import * + +ERRORS = { + errno.EACCES: "Access is denied", + errno.E2BIG: "Excess data provided", + errno.EINVAL: "Bad parameters", + errno.EAGAIN: "Bad state", + errno.ENOENT: "Not implemented or message failure", + errno.EBUSY: "Busy", + errno.ENFILE: "Overflow", + errno.EPERM: "Signature invalid", +} + +messages = { + "get-fmax-cap": PARAM_GET_FMAX_CAP, + "set-fmax-cap": PARAM_SET_FMAX_CAP, + "get-power-cap": PARAM_GET_PWR_CAP, + "set-power-cap": PARAM_SET_PWR_CAP, + "get-graphics-mode": PARAM_GET_GFX_MODE, + "set-graphics-mode": PARAM_SET_GFX_MODE, + "get-current-temp": PARAM_GET_CURR_TEMP, + "get-fmax-max": PARAM_GET_FMAX_MAX, + "get-fmax-min": PARAM_GET_FMAX_MAX, + "get-soc-power-max": PARAM_GET_SOC_PWR_MAX, + "get-soc-power-min": PARAM_GET_SOC_PWR_MIN, + "get-soc-power-cur": PARAM_GET_SOC_PWR_CUR, +} + + +def _pretty_buffer(ba): + return str(binascii.hexlify(ba, " ")) + + +def parse_args(): + parser = argparse.ArgumentParser( + description="Dynamic Boost control command line interface" + ) + parser.add_argument( + "command", + choices=["get-nonce", "get-param", "set-param", "set-uid"], + help="Command to send", + ) + parser.add_argument("--device", default="/dev/dbc", help="Device to operate") + parser.add_argument("--signature", help="Signature for command") + parser.add_argument("--message", choices=messages.keys(), help="Message index") + parser.add_argument("--data", help="Argument to pass to message") + parser.add_argument("--uid", help="UID to pass") + return parser.parse_args() + + +def pretty_error(code): + if code in ERRORS: + print(ERRORS[code]) + else: + print("failed with return code %d" % code) + + +if __name__ == "__main__": + args = parse_args() + data = 0 + if not os.path.exists(args.device): + raise IOError("Missing device {device}".format(device=args.device)) + if args.signature and len(args.signature) != DBC_SIG_SIZE: + raise ValueError( + "Invalid signature length %d (expected %d)" + % (len(args.signature), DBC_SIG_SIZE) + ) + if args.uid and len(args.uid) != DBC_UID_SIZE: + raise ValueError( + "Invalid UID length %d (expected %d)" % (len(args.uid), DBC_UID_SIZE) + ) + if args.data: + try: + data = int(args.data, 10) + except ValueError: + data = int(args.data, 16) + + with open(args.device) as d: + if args.command == "get-nonce": + try: + nonce = get_nonce(d, args.signature) + print("Nonce: %s" % _pretty_buffer(bytes(nonce.nonce))) + except OSError as e: + pretty_error(e.errno) + elif args.command == "set-uid": + try: + result = set_uid(d, args.uid, args.signature) + if result: + print("Set UID") + except OSError as e: + pretty_error(e.errno) + elif args.command == "get-param": + if not args.message or args.message.startswith("set"): + raise ValueError("Invalid message %s" % args.message) + try: + param = process_param(d, messages[args.message], args.signature) + print( + "Parameter: {par}, response signature {sig}".format( + par=param.parameter, + sig=_pretty_buffer(bytes(param.signature)), + ) + ) + except OSError as e: + pretty_error(e.errno) + elif args.command == "set-param": + if not args.message or args.message.startswith("get"): + raise ValueError("Invalid message %s" % args.message) + try: + param = process_param(d, messages[args.message], args.signature, data) + print( + "Parameter: {par}, response signature {sig}".format( + par=param.parameter, + sig=_pretty_buffer(bytes(param.signature)), + ) + ) + except OSError as e: + pretty_error(e.errno)