From patchwork Wed Dec 14 19:40:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 633946 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6700FC4332F for ; Wed, 14 Dec 2022 19:57:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229562AbiLNT5R (ORCPT ); Wed, 14 Dec 2022 14:57:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231220AbiLNT4S (ORCPT ); Wed, 14 Dec 2022 14:56:18 -0500 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2054.outbound.protection.outlook.com [40.107.223.54]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2D752C10D; Wed, 14 Dec 2022 11:53:25 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=iRrLR345INPvxFlhSdSeOpzxiGnpak9+Z/c1uGWs0DYwp0ICxvXEXCd3A6DhYZpVBrPPJrj1MIMHNMgE1DjPC4Tv1M78JD2/OLz3Re+J5zEZsyPbVVBtVCZeHS0Vkmw9RzY6YIrHD1ebhMlUwbnIKheQHCWQwMaNsT0XBgkoGNkb3HV7LN9vJGHAh7uuOFmIAr+i4LfaNGnl5zdlz4E702ByXbwSLOla1a3IoMgpskXK+wm6dpgJLWUyNUHt9NBjiZSiu+kor04kW5U3URTGr+WK9A6TPGR+LXuoDoMH8zA5ejuojg8DGeg0P00eT6ByBPb6LBCz0hif/KQP6Bw+YA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=rRY9S+poCqn/XGHRQP5gYUrdAtRxMsAtv6+gdzhKppY=; b=mzCUmD7l7eW0AQ9THCpCmRxX90Z6RVFICk2wGOMqexoVNpSmjYLKO8PZMzviJzZjmQrJeQEa9iyySU57NsWK8vreejo40y4ahq3mmmC9zslEXNFEleN0nzwPDnAC7nTOHGm/ycDXNzTdWDvmGvv05XkKCu4jUxCN3FT3a3pQRb6BCYO/FUCyvE+6NZMXUsEzAGSm4p3yRCwkdWsboAPoFiPIH9R7CNCMLAg37PTEDmlnRIhu0ZF2i+bkWc7Ldh2bCtS3DZAI8jeXu7m2g7Xs9z2ZQxZJjJ3eIDZAI+giu6VDEh21PbsRa2w9v0D4f1GwnELYVrbB5qFjNe1RKsxDfQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rRY9S+poCqn/XGHRQP5gYUrdAtRxMsAtv6+gdzhKppY=; b=sXvSsfEfC1h83fuOrdHkYJphbRlhDzw/cgN7vUUEUHq9CGWNhaL7tY2Lbber8U81nova0y/pAVf7wJRG2r/HVjqeQRRWPDnyPWDLK6CtahyLoyqkxVjbh6j7rC97Em2rnVHC3xYLZfs1WpFINaKuUmYwZd5w+s0+f9Qj4kEzWm0= Received: from CY5P221CA0115.NAMP221.PROD.OUTLOOK.COM (2603:10b6:930:1f::12) by SN7PR12MB7274.namprd12.prod.outlook.com (2603:10b6:806:2ad::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5880.19; Wed, 14 Dec 2022 19:53:23 +0000 Received: from CY4PEPF0000C979.namprd02.prod.outlook.com (2603:10b6:930:1f:cafe::c7) by CY5P221CA0115.outlook.office365.com (2603:10b6:930:1f::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5880.19 via Frontend Transport; Wed, 14 Dec 2022 19:53:23 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CY4PEPF0000C979.mail.protection.outlook.com (10.167.241.137) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5924.10 via Frontend Transport; Wed, 14 Dec 2022 19:53:23 +0000 Received: from localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Wed, 14 Dec 2022 13:53:22 -0600 From: Michael Roth To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Brijesh Singh Subject: [PATCH RFC v7 26/64] crypto:ccp: Provide API to issue SEV and SNP commands Date: Wed, 14 Dec 2022 13:40:18 -0600 Message-ID: <20221214194056.161492-27-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221214194056.161492-1-michael.roth@amd.com> References: <20221214194056.161492-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000C979:EE_|SN7PR12MB7274:EE_ X-MS-Office365-Filtering-Correlation-Id: 05d4b19e-a2f3-4043-3d9e-08dade0cdbe1 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:CA; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230022)(4636009)(376002)(39860400002)(136003)(396003)(346002)(451199015)(46966006)(36840700001)(40470700004)(7416002)(44832011)(7406005)(186003)(2906002)(70206006)(4326008)(8936002)(8676002)(41300700001)(70586007)(54906003)(316002)(6916009)(16526019)(2616005)(82310400005)(6666004)(36756003)(83380400001)(47076005)(40480700001)(26005)(1076003)(426003)(478600001)(336012)(82740400003)(81166007)(356005)(5660300002)(86362001)(40460700003)(36860700001)(36900700001)(134885004); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Dec 2022 19:53:23.5354 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 05d4b19e-a2f3-4043-3d9e-08dade0cdbe1 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: CY4PEPF0000C979.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7274 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Brijesh Singh Make sev_do_cmd() a generic API interface for the hypervisor to issue commands to manage an SEV and SNP guest. The commands for SEV and SNP are defined in the SEV and SEV-SNP firmware specifications. Signed-off-by: Brijesh Singh Signed-off-by: Ashish Kalra Signed-off-by: Michael Roth --- drivers/crypto/ccp/sev-dev.c | 3 ++- include/linux/psp-sev.h | 17 +++++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index af20420bd6c2..35f605936f1b 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -415,7 +415,7 @@ static int __sev_do_cmd_locked(int cmd, void *data, int *psp_ret) return ret; } -static int sev_do_cmd(int cmd, void *data, int *psp_ret) +int sev_do_cmd(int cmd, void *data, int *psp_ret) { int rc; @@ -425,6 +425,7 @@ static int sev_do_cmd(int cmd, void *data, int *psp_ret) return rc; } +EXPORT_SYMBOL_GPL(sev_do_cmd); static int __sev_init_locked(int *error) { diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 8cfe92e82743..46f61e3ae33b 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -907,6 +907,20 @@ int sev_guest_df_flush(int *error); */ int sev_guest_decommission(struct sev_data_decommission *data, int *error); +/** + * sev_do_cmd - perform SEV command + * + * @error: SEV command return code + * + * Returns: + * 0 if the SEV successfully processed the command + * -%ENODEV if the SEV device is not available + * -%ENOTSUPP if the SEV does not support SEV + * -%ETIMEDOUT if the SEV command timed out + * -%EIO if the SEV returned a non-zero return code + */ +int sev_do_cmd(int cmd, void *data, int *psp_ret); + void *psp_copy_user_blob(u64 uaddr, u32 len); #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ @@ -924,6 +938,9 @@ sev_guest_deactivate(struct sev_data_deactivate *data, int *error) { return -ENO static inline int sev_guest_decommission(struct sev_data_decommission *data, int *error) { return -ENODEV; } +static inline int +sev_do_cmd(int cmd, void *data, int *psp_ret) { return -ENODEV; } + static inline int sev_guest_activate(struct sev_data_activate *data, int *error) { return -ENODEV; }