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Miller" , , , Mario Limonciello Subject: [PATCH v5 08/11] crypto: ccp: Add a sample library for ioctl use Date: Fri, 23 Jun 2023 08:49:58 -0500 Message-ID: <20230623135001.18672-9-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_|MW4PR12MB6706:EE_ X-MS-Office365-Filtering-Correlation-Id: dd0ddbf3-14e5-4195-1ca1-08db741815bc 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)(376002)(39860400002)(396003)(346002)(136003)(451199021)(46966006)(40470700004)(36840700001)(40460700003)(8936002)(5660300002)(44832011)(36860700001)(36756003)(8676002)(81166007)(356005)(82740400003)(2906002)(478600001)(6666004)(16526019)(186003)(40480700001)(110136005)(2616005)(54906003)(86362001)(82310400005)(26005)(7696005)(1076003)(70206006)(70586007)(47076005)(316002)(4326008)(426003)(336012)(41300700001)(36900700001)(309714004);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jun 2023 18:31:39.5275 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dd0ddbf3-14e5-4195-1ca1-08db741815bc 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: MW4PR12MB6706 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 Acked-by: Tom Lendacky Signed-off-by: Mario Limonciello --- v4->v5: * Pick up tag 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 0000000000000..ae4a66d1558a1 --- /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 0000000000000..37e813175642f --- /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; +}