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Miller" , , , Mario Limonciello Subject: [PATCH v5 09/11] crypto: ccp: Add a sample python script for Dynamic Boost Control Date: Fri, 23 Jun 2023 08:49:59 -0500 Message-ID: <20230623135001.18672-10-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230623135001.18672-1-mario.limonciello@amd.com> References: <20230623135001.18672-1-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: BL02EPF000145B8:EE_|IA1PR12MB8517:EE_ X-MS-Office365-Filtering-Correlation-Id: 3432121a-9b21-4a4d-6544-08db74181646 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: qcIrE+hpIKmON3y75+vJaxxl33WpgmvJBgtb+bSE0MxpmqcCG47rcTFqOvbb/TM4HaXj/mXyopjLJg7JaVGt+ZK/Q5hJLI3SdzsSSk3xxn8ND+rGY2k2DHeay1yAoNqpW3gD06w7QlD4bjscp1osH7OSFt8tYDI4sUMX12q06fXU3pDHYWa/WmybLzkWUUx/WzmXmD9YAFEd+15Seje+fIJr7ETQBSLpVfuhw0Hrrf9M2Uu0q6717WOnvmmdPiUBJmroxymNGZ132aulU8naVQpDk19MjUQAxKA9Kqs7lXQfnv43n95ycjuDwRv0A+93rGOcTRqHQleoOulCrQ1853PJ90ke5GgJwMH0HnKZpoGxw63W4zNuSdJ7tkKhS93+6fDhZWGUtkCPSTRyT+fJB4eWfAmRo3AN7rzsxUK9ZvgbMSuqi0Tg7RsnUjqQdvLWj94hjxwBMc90XvCFvwgkumP6FU2EGpcBqDLfCyHSlYMIpzdKJhlLEZCYcA61IaPoDewQxA9NHmG9ke82x+cSHvQz1JsJia/kTWINX1PrnU/YeST8Sa5fzzsO35AbS79QOwxzXvdIIVeTcQoe7D8+T+pORPrHra7WEVgjmTXtvWCvz1cAuG9a+EFiNmPv7rlNJug/QyZHZjOYn/efnNg0xiAWWXiluJARDzU97zK3hBMKU5ScQ8sXD3KsJdlyETJImx6KaWTJuU7USzcydwEceNao6/cVjjSWg0kzsUuKRjeFEJwsCu5eOH3fpQ5tLjUDq7L09QdfbfaUG3HUuosAMw== 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)(39860400002)(346002)(376002)(136003)(396003)(451199021)(40470700004)(36840700001)(46966006)(186003)(16526019)(26005)(1076003)(2616005)(83380400001)(336012)(54906003)(82740400003)(426003)(7696005)(82310400005)(2906002)(478600001)(36860700001)(47076005)(36756003)(6666004)(110136005)(40480700001)(44832011)(70586007)(70206006)(316002)(5660300002)(8676002)(4326008)(41300700001)(81166007)(40460700003)(356005)(8936002)(86362001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jun 2023 18:31:40.4337 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3432121a-9b21-4a4d-6544-08db74181646 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: BL02EPF000145B8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB8517 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Dynamic Boost Control commands are triggered by userspace with an IOCTL interface that userspace will prepare proper buffers for a request. To allow prototyping and testing this interface, add a python3 command line script that loads the dbc_library.so for utilizing the IOCTLs. The signature to use and UID are passed as arguments to this script. Acked-by: Tom Lendacky Signed-off-by: Mario Limonciello --- v4->v5: * Fix the `get-fmax-min` message which was accidentally checking `PARAM_GET_FMAX_MAX` * Pick up tag v3->v4: * Use library from previous patch instead of python's ioctl interface --- tools/crypto/ccp/.gitignore | 1 + tools/crypto/ccp/dbc.py | 64 +++++++++++++++++ tools/crypto/ccp/dbc_cli.py | 134 ++++++++++++++++++++++++++++++++++++ 3 files changed, 199 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 0000000000000..bee8a64b79a99 --- /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 0000000000000..3f6a825ffc9e4 --- /dev/null +++ b/tools/crypto/ccp/dbc.py @@ -0,0 +1,64 @@ +#!/usr/bin/python3 +# SPDX-License-Identifier: GPL-2.0 + +import ctypes +import os + +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" + +lib = ctypes.CDLL("./dbc_library.so", mode=ctypes.RTLD_GLOBAL) + + +def handle_error(code): + val = code * -1 + raise OSError(val, os.strerror(val)) + + +def get_nonce(device, signature): + if not device: + raise ValueError("Device required") + buf = ctypes.create_string_buffer(DBC_NONCE_SIZE) + ret = lib.get_nonce(device.fileno(), ctypes.byref(buf), signature) + if ret: + handle_error(ret) + return buf.value + + +def set_uid(device, new_uid, signature): + if not signature: + raise ValueError("Signature required") + if not new_uid: + raise ValueError("UID required") + ret = lib.set_uid(device.fileno(), new_uid, signature) + if ret: + handle_error(ret) + return True + + +def process_param(device, message, signature, data=None): + if not signature: + raise ValueError("Signature required") + if type(message) != tuple: + raise ValueError("Expected message tuple") + arg = ctypes.c_int(data if data else 0) + ret = lib.process_param(device.fileno(), message[0], signature, ctypes.pointer(arg)) + if ret: + handle_error(ret) + return arg, signature diff --git a/tools/crypto/ccp/dbc_cli.py b/tools/crypto/ccp/dbc_cli.py new file mode 100755 index 0000000000000..bf52233fd0380 --- /dev/null +++ b/tools/crypto/ccp/dbc_cli.py @@ -0,0 +1,134 @@ +#!/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_MIN, + "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="File containing 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="File containing 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 + sig = None + uid = None + if not os.path.exists(args.device): + raise IOError("Missing device {device}".format(device=args.device)) + if args.signature: + if not os.path.exists(args.signature): + raise ValueError("Invalid signature file %s" % args.signature) + with open(args.signature, "rb") as f: + sig = f.read() + if len(sig) != DBC_SIG_SIZE: + raise ValueError( + "Invalid signature length %d (expected %d)" % (len(sig), DBC_SIG_SIZE) + ) + if args.uid: + if not os.path.exists(args.uid): + raise ValueError("Invalid uid file %s" % args.uid) + with open(args.uid, "rb") as f: + uid = f.read() + if len(uid) != DBC_UID_SIZE: + raise ValueError( + "Invalid UID length %d (expected %d)" % (len(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, sig) + print("Nonce: %s" % _pretty_buffer(bytes(nonce))) + except OSError as e: + pretty_error(e.errno) + elif args.command == "set-uid": + try: + result = set_uid(d, uid, sig) + 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, signature = process_param(d, messages[args.message], sig) + print( + "Parameter: {par}, response signature {sig}".format( + par=param, + sig=_pretty_buffer(bytes(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, signature = process_param(d, messages[args.message], sig, data) + print( + "Parameter: {par}, response signature {sig}".format( + par=param, + sig=_pretty_buffer(bytes(signature)), + ) + ) + except OSError as e: + pretty_error(e.errno)