From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09246C11F66 for ; Wed, 14 Jul 2021 03:38:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D356B613AA for ; Wed, 14 Jul 2021 03:38:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237738AbhGNDlq (ORCPT ); Tue, 13 Jul 2021 23:41:46 -0400 Received: from mail-dm6nam11on2103.outbound.protection.outlook.com ([40.107.223.103]:19262 "EHLO NAM11-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S237486AbhGNDlq (ORCPT ); Tue, 13 Jul 2021 23:41:46 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AZ4BePB1C+Dwc+Uj7mHgBNEIlEo/18ApRsk2v47vK/YtxWcFHYjbLLTaSHVAAb9Rx7CGb5ctn1hNwduOGD4SSi+zkTFPpShftY0WjvrFD9WUGWUKDyQpV5hh+vjD6m5sApKoof/V5owSTxqtZOQwTuPIeRMLdeHt2QRAwWXL7VkQpt1mtOAKrEe82hjGD4QkVBHeztx/xyvbTCmEVeQm1DgRfQbJG2Gcg0sAQD+EBvZ5FcCENCfRWg46woKUdPhekaFgQddQ3igOcnV9qtx/hah65y8bhlZqt/El77KoAGqOz5jvRHtF5c+4EbLq82aqKE5nW4WVf+/BSUM5K0hywQ== 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-SenderADCheck; bh=ImhiR2PiuZEgeQZ69qvRpQa1OwamJrnU1zi6QoXjJOw=; b=oDO180dMu9BQy2gtmSE54RS2Sj4uj1E2MrGRoFRxLUvPXwb7cMIiI8Xsk8w1Y5GsZaQfQSknDI9gc/ZwylznkjWl8fcqU/Jm6Zoh7Tv6JoA2119YvFbCuWnY9Jj7ed3NI/Qdbuh4F5HHXFzq3kM+HdfiDgAJYY9IyROFGdN4hezh+7haYYFN3xgOqI8tFYCvFaCWnm1pis56He4O9YjWRPUrZM6o7UJjBvXnRabwBxoLD1xVCIoyvhdGV9MgO5vfiMd1eUvUpwCbB6hrI+tW549GshSCL+WbGSGmnXvsADeBuDw3t2wBHC5g/RXg9nI8LQNYI+bgheMaY/22XT+Mww== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=os.amperecomputing.com; dmarc=pass action=none header.from=os.amperecomputing.com; dkim=pass header.d=os.amperecomputing.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=os.amperecomputing.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ImhiR2PiuZEgeQZ69qvRpQa1OwamJrnU1zi6QoXjJOw=; b=dvw1YjyowR1PFDogIqhwX6kKptsB71BgwxL7bim8mh6e1EmHgA9G/UnqAv9F2rv+TuDL9qhKqQNtTTUmy75dGxZdMZxh1lIOUL9PzzFTYoksliieFJtXOvoJdKQB7F+gKFPHwePsfC4rznVYXfWxeAgGz1nzdKeN5LroKjrU/9c= Authentication-Results: acm.org; dkim=none (message not signed) header.d=none;acm.org; dmarc=none action=none header.from=os.amperecomputing.com; Received: from MW2PR0102MB3482.prod.exchangelabs.com (2603:10b6:302:c::32) by MW2PR0102MB3370.prod.exchangelabs.com (2603:10b6:302:2::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4308.22; Wed, 14 Jul 2021 03:38:53 +0000 Received: from MW2PR0102MB3482.prod.exchangelabs.com ([fe80::452a:24fb:12cb:9d7e]) by MW2PR0102MB3482.prod.exchangelabs.com ([fe80::452a:24fb:12cb:9d7e%5]) with mapi id 15.20.4308.027; Wed, 14 Jul 2021 03:38:53 +0000 From: Quan Nguyen To: Corey Minyard , Rob Herring , Joel Stanley , Andrew Jeffery , Brendan Higgins , Benjamin Herrenschmidt , Wolfram Sang , openipmi-developer@lists.sourceforge.net, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org Cc: Open Source Submission , Phong Vo , "Thang Q . Nguyen" Subject: [PATCH v5 0/3] Add SSIF BMC driver Date: Wed, 14 Jul 2021 10:38:30 +0700 Message-Id: <20210714033833.11640-1-quan@os.amperecomputing.com> X-Mailer: git-send-email 2.28.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: HK0PR03CA0099.apcprd03.prod.outlook.com (2603:1096:203:b0::15) To MW2PR0102MB3482.prod.exchangelabs.com (2603:10b6:302:c::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from hcm-sw-17.amperecomputing.com (118.69.219.201) by HK0PR03CA0099.apcprd03.prod.outlook.com (2603:1096:203:b0::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.21 via Frontend Transport; Wed, 14 Jul 2021 03:38:49 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5e09e8f0-51df-4fdf-521e-08d94678e68f X-MS-TrafficTypeDiagnostic: MW2PR0102MB3370: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6430; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MW2PR0102MB3482.prod.exchangelabs.com;PTR:;CAT:NONE;SFS:(4636009)(376002)(136003)(346002)(366004)(39850400004)(396003)(4326008)(38100700002)(1076003)(38350700002)(2616005)(107886003)(956004)(8936002)(8676002)(6506007)(86362001)(110136005)(52116002)(5660300002)(54906003)(2906002)(6666004)(478600001)(26005)(186003)(66946007)(83380400001)(7416002)(66556008)(66476007)(6512007)(921005)(6486002)(316002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?pvt+ODcwXC1oetct1FR2D2YHZvu7BjMSwySK9qTGYz9h99j/lccXNSxUovgq?= =?us-ascii?Q?INbK/G3amvZwzdAzongWI8bOAopyAGz4RPVVvjInSs+MxJNWDzrFu4dkM70M?= =?us-ascii?Q?ux6KCSPxv94FIfCrzxWZdQeIthUW1u5DunyBQUoGFC51dEpGcF6DeFWmn4po?= =?us-ascii?Q?VQnmiHri7RhhYrRJruZEr8JQrAep+RJes+4zEFM9p7PuNGdA+58KO9bu0/Kp?= =?us-ascii?Q?23P6IRs5nahlTPCiML0BonmnlvdKjGXKAhSzf5tiaSCSy93SIU1jZ0F76tTy?= =?us-ascii?Q?oHePQFgM9LIk72YG2ITVLjl5sGmb/C7KlORgDtbUqhgvmnn1gwLDOjvZ/uem?= =?us-ascii?Q?ebbZkZb48vaLYUAF4h9ZYSdHng+bQur2RCUJVvCCPZoSuoM9ZDqB4gtKk2Cx?= =?us-ascii?Q?AiyhqK/k1ztRUB+MVRDQNyezVdXbDYQEXmThGSlEopBc08/ynWp3R7u7UhQ3?= =?us-ascii?Q?bxPqQXnY2Dbu6GmuW4kfx825/E1UzDLNGxzVQgkxznuPt+pnlWDn/YjQZHF7?= =?us-ascii?Q?vTesRTTwgJaTMeue+zDGU/36wWVJYPJ8TRnrAw0FDylv5akwvRlhJ1rfXWz3?= =?us-ascii?Q?1pCeHe+/NQtDk+DopEUwi9ryJptGL1vYqpNvp8rUxrHKHxaNeQrZqMGvcI4/?= =?us-ascii?Q?xe2mIxfNGIiRFnJ/stz6BAvM0IBVoZV/nKik7DAS0Z5z2R8e7ihH3qTy4J4k?= =?us-ascii?Q?53lc0Qp1+ZUwMnFqVsDbszrPua9dNLCiBkC72NwM6cAfaaxz+Mx5uEHUQ4FR?= =?us-ascii?Q?JHe+JnF/cub2Lb9O3wwySJbkRrXs4IPcaA737mo+/5BY9hgDdmJSC5galbuR?= =?us-ascii?Q?uogSa03JsRdFAm99f6OhuzF76JUO4iBCIWo5PID631AFDBXXePcluS2wcdrl?= =?us-ascii?Q?bHdCEkxBmIOzXWlDCvW42zuhoNpJlaXL0gvCG6Zf5WWyNxlE55LqkpE9TK+w?= =?us-ascii?Q?eN1OGsoPGBFEmdKUw2nFN5KPrm4dl3Shi7u5V4eP0TaT577EX6eZl4uI551f?= =?us-ascii?Q?c20F9GFIPW70kR+VXevGfSvOq/tpRSREcUVGf2956CXzg0M4a+bvLvIwxyb5?= =?us-ascii?Q?i5uK4rwpjurHG4yDEpMeBCmRo5YtNQHyfryx7FqgBEu/cvj8iNwnp+egqIWx?= =?us-ascii?Q?xa8nGlGMc1TpyYGOPEmEQFj1QbEdIVfSmTKpCdQ4vE59UKa8mR/H2XJ5SkPu?= =?us-ascii?Q?sxAbb+/JZntGvhoVWfxqF4AJmAGS/VKHP7bxFu5kOKpQ7p4gW6g/BdL0vNCJ?= =?us-ascii?Q?PUW3hKThJJWmcjHMVBGwqDRHdQk6vK8e0tW3gOEDsIAcMbc+WBGxJgmEYLgU?= =?us-ascii?Q?M5bBWsnmcfUbWBdfPsTpw6Dm?= X-OriginatorOrg: os.amperecomputing.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5e09e8f0-51df-4fdf-521e-08d94678e68f X-MS-Exchange-CrossTenant-AuthSource: MW2PR0102MB3482.prod.exchangelabs.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Jul 2021 03:38:53.1256 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3bc2b170-fd94-476d-b0ce-4229bdc904a7 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: rmFD/oZNSaBeOlzhG8T89USjambVF5iCG7PHdmYcMbl29xZ2qNIfjbHxzVfziDX/0inN6IdAP1exEvJ9o82OI3PTL97c0d98fSl3P8gC0g0= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR0102MB3370 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This series add support the SSIF BMC driver which is to perform in-band IPMI communication with their host in management (BMC) side. SSIF BMC driver in this series is tested with Aspeed AST2500. v5: + Correct the patches order to fix the bisect issue found by kernel build robot v4: + Fix recursive spinlock [Graeme] + Send response with Completion code 0xFF when aborting [Quan] + Fix warning with dt_binding_check [Rob] + Change aspeed-ssif-bmc.yaml to ssif-bmc.yaml [Quan] + Added bounding check on SMBus writes and the whole request [Dan] + Moved buffer to end of struct ssif_bmc_ctx to avoid context corruption if somehow buffer is written past the end [Dan] + Return -EINVAL if userspace buffer too small, dont silence truncate [Corey, Joel] + Not necessary to check NONBLOCK in lock [Corey] + Enforce one user at a time [Joel] + Reject write with invalid response length from userspace [Corey] + Add state machines for better ssif bmc state handling [Quan] + Drop ssif_bmc_aspeed.c and make ssif_bmc.c is generic SSIF BMC driver [Quan] + Change compatible string "aspeed,ast2500-ssif-bmc" to "ampere,ssif-bmc" [Quan] + Toggle Slave enable in i2c-aspeed to turn on/off slave mode [Ryan] + Added slave_enable() to struct i2c_algorithm to control slave mode and to address the recursive spinlock [Graeme, Ryan] + Abort current request with invalid SMBus write or invalid command [Quan] + Abort all request if there is pending response [Quan] + Changed validate_pec() to validate_request() [Quan] + Add unsupported_smbus_cmd() to handle unknown SMBus command [Quan] + Print internal state string for ease investigating issue [Quan] + Move to READY state on SLAVE_STOP event [Quan] + Change initilize_transfer() to process_smbus_cmd() [Quan] + Introduce functions for each slave event [Quan] v3: + Switched binding doc to use DT schema format [Rob] + Splited into generic ssif_bmc and aspeed-specific [Corey, Joel] + Removed redundant license info [Joel] + Switched to use traditional if-else [Joel] + Removed unused ssif_bmc_ioctl() [Joel] + Made handle_request()/complete_response() to return void [Joel] + Refactored send_ssif_bmc_response()/receive_ssif_bmc_request() [Corey] + Remove mutex [Corey] + Use spin_lock/unlock_irqsave/restore in callback [Corey] + Removed the unnecessary memset [Corey] + Switch to use dev_err() [Corey] + Combine mask/unmask two interrupts together [Corey] + Fixed unhandled Tx done with NAK [Quan] + Late ack'ed Tx done w/wo Ack irq [Quan] + Use aspeed-specific exported aspeed_set_slave_busy() when slave busy to fix the deadlock [Graeme, Philipp, Quan] + Clean buffer for last multipart read [Quan] + Handle unknown incoming command [Quan] v2: + Fixed compiling error with COMPILE_TEST for arc Quan Nguyen (3): i2c: aspeed: Add slave_enable() to toggle slave mode ipmi: ssif_bmc: Add SSIF BMC driver bindings: ipmi: Add binding for SSIF BMC driver .../devicetree/bindings/ipmi/ssif-bmc.yaml | 38 + drivers/char/ipmi/Kconfig | 11 + drivers/char/ipmi/Makefile | 1 + drivers/char/ipmi/ssif_bmc.c | 781 ++++++++++++++++++ drivers/char/ipmi/ssif_bmc.h | 106 +++ drivers/i2c/busses/i2c-aspeed.c | 20 + include/linux/i2c.h | 2 + 7 files changed, 959 insertions(+) create mode 100644 Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml create mode 100644 drivers/char/ipmi/ssif_bmc.c create mode 100644 drivers/char/ipmi/ssif_bmc.h -- 2.28.0