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Miller" , , , Mario Limonciello Subject: [PATCH v4 08/11] crypto: ccp: Add a sample library for ioctl use Date: Thu, 8 Jun 2023 06:17:54 -0500 Message-ID: <20230608111757.32054-9-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230608111757.32054-1-mario.limonciello@amd.com> References: <20230608111757.32054-1-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: CO1PEPF000044FC:EE_|IA0PR12MB8716:EE_ X-MS-Office365-Filtering-Correlation-Id: d6085949-ef7d-4020-7cbf-08db68544f93 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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)(136003)(39860400002)(346002)(396003)(376002)(451199021)(40470700004)(46966006)(36840700001)(47076005)(426003)(336012)(110136005)(44832011)(82740400003)(54906003)(40480700001)(478600001)(8676002)(8936002)(41300700001)(70206006)(70586007)(356005)(81166007)(316002)(5660300002)(4326008)(86362001)(40460700003)(6666004)(7696005)(36756003)(2906002)(82310400005)(36860700001)(16526019)(186003)(1076003)(26005)(2616005)(36900700001)(309714004);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jun 2023 19:12:32.3258 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d6085949-ef7d-4020-7cbf-08db68544f93 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: CO1PEPF000044FC.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8716 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Add a small shared library that demonstrates the usage of the IOCTL interface. This library can be linked to but, is intended to be loaded and used by higher level languages Signed-off-by: Mario Limonciello --- v3->v4: * New patch --- tools/crypto/ccp/Makefile | 13 +++++++ tools/crypto/ccp/dbc.c | 72 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 85 insertions(+) create mode 100644 tools/crypto/ccp/Makefile create mode 100644 tools/crypto/ccp/dbc.c diff --git a/tools/crypto/ccp/Makefile b/tools/crypto/ccp/Makefile new file mode 100644 index 000000000000..ae4a66d1558a --- /dev/null +++ b/tools/crypto/ccp/Makefile @@ -0,0 +1,13 @@ +# SPDX-License-Identifier: GPL-2.0-only +CFLAGS += -D__EXPORTED_HEADERS__ -I../../../include/uapi -I../../../include + +TARGET = dbc_library.so + +all: $(TARGET) + +dbc_library.so: dbc.c + $(CC) $(CFLAGS) $(LDFLAGS) -shared -o $@ $< + chmod -x $@ + +clean: + $(RM) $(TARGET) diff --git a/tools/crypto/ccp/dbc.c b/tools/crypto/ccp/dbc.c new file mode 100644 index 000000000000..37e813175642 --- /dev/null +++ b/tools/crypto/ccp/dbc.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AMD Secure Processor Dynamic Boost Control sample library + * + * Copyright (C) 2023 Advanced Micro Devices, Inc. + * + * Author: Mario Limonciello + */ + +#include +#include +#include + +/* if uapi header isn't installed, this might not yet exist */ +#ifndef __packed +#define __packed __attribute__((packed)) +#endif +#include + +int get_nonce(int fd, void *nonce_out, void *signature) +{ + struct dbc_user_nonce tmp = { + .auth_needed = !!signature, + }; + int ret; + + assert(nonce_out); + + if (signature) + memcpy(tmp.signature, signature, sizeof(tmp.signature)); + + ret = ioctl(fd, DBCIOCNONCE, &tmp); + if (ret) + return ret; + memcpy(nonce_out, tmp.nonce, sizeof(tmp.nonce)); + + return 0; +} + +int set_uid(int fd, __u8 *uid, __u8 *signature) +{ + struct dbc_user_setuid tmp; + + assert(uid); + assert(signature); + + memcpy(tmp.uid, uid, sizeof(tmp.uid)); + memcpy(tmp.signature, signature, sizeof(tmp.signature)); + + return ioctl(fd, DBCIOCUID, &tmp); +} + +int process_param(int fd, int msg_index, __u8 *signature, int *data) +{ + struct dbc_user_param tmp = { + .msg_index = msg_index, + .param = *data, + }; + int ret; + + assert(signature); + assert(data); + + memcpy(tmp.signature, signature, sizeof(tmp.signature)); + + ret = ioctl(fd, DBCIOCPARAM, &tmp); + if (ret) + return ret; + + *data = tmp.param; + return 0; +}