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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 653DCC6FD1C for ; Wed, 22 Mar 2023 04:10:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230266AbjCVEKZ (ORCPT ); Wed, 22 Mar 2023 00:10:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230138AbjCVEKY (ORCPT ); Wed, 22 Mar 2023 00:10:24 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2044.outbound.protection.outlook.com [40.107.223.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A95A74FCF6; Tue, 21 Mar 2023 21:10:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=idIfD+V653aD5tWD2WbnFkiyG8+TWPicJe8bia4K1PE1ve8zFoEWyTbpPIje2SX60UPRF4FL3/S7ipXX2hNMwUhRD6468QWG50X/EYlNSTlcqVUFriNY4IkBM4EmmwbKdy8IvzuIqUCZSxgnUAkwRFBPiStXT11KiNBnNHog4xzzrnQAC4U1iimdz37q269552mE0ks0N3C5OKON1B1t3bqEzyDjUmN9ysYQ4pTbk+wMLYZRHJrOmZr1u7Kn258/jB1VlTwaNBP8dw48IxMebk2lWi/li0x65psS9564pZSUVrFW1xNiE73rCdL5TckhYjA+KucW+mKBjIqscgIYVg== 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=waXwmx6v93/a48giSXE8o8Eupo8VCthQfd07N3Sc3bA=; b=AXjS6pqMkga4R00+Z0byFAnSdNdbFtvF7lavoyhS5jYsBFLDZ6K4cEGxkXfrVfapZvpgAZDPFJKCJOXsRLw2DVmVCfNvaJ0e0TyRLQieK6lIIJf+908/Eojt8d+LpgDwD9Ei0p3d/pBqauf8xUoo4hBm7ujtezxLo1YIoG/h7jyKbuncOH0dq78LQxBEXPpDsQk1C8WgrzbmYEnLvs8oPiBahFuJ2VYFRkPexDuWSr7+nu9OecRqirtRBVU5GqE7oy40DXb216PPLsG9yfCsNs34cmA5at1cwXe+IhdXVbB9Rc6vLAjuTY8XUDFjtPeDw1QcXDLQX9WhgabTzvzWlQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=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=waXwmx6v93/a48giSXE8o8Eupo8VCthQfd07N3Sc3bA=; b=AF9sH2v+WibOyre4Llcpg6SgboUyVbwjfD21VN95bcQ2syQ2BJQbJpATKDaCtuypPE262T6wDLNMIN6EZhf94kZE3YpbVEKiAMjfJo9PrMW3cJsJggkpQYDJYCtd8prFl+Siumo6Z/Xvk7zZeR7N3pR4Pk7FMk51sJph3+YoMRE= Received: from CY5PR15CA0231.namprd15.prod.outlook.com (2603:10b6:930:88::16) by BL0PR12MB4883.namprd12.prod.outlook.com (2603:10b6:208:1c6::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6178.37; Wed, 22 Mar 2023 04:10:20 +0000 Received: from CY4PEPF0000B8EF.namprd05.prod.outlook.com (2603:10b6:930:88:cafe::41) by CY5PR15CA0231.outlook.office365.com (2603:10b6:930:88::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6178.37 via Frontend Transport; Wed, 22 Mar 2023 04:10:20 +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 CY4PEPF0000B8EF.mail.protection.outlook.com (10.167.241.11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6254.2 via Frontend Transport; Wed, 22 Mar 2023 04:10:20 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) 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; Tue, 21 Mar 2023 23:10:19 -0500 Received: from xsjtanmays50.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Tue, 21 Mar 2023 23:10:19 -0500 From: Tanmay Shah To: , CC: , , "Ben Levinsky" , Ben Levinsky Subject: [PATCH v2 1/2] remoteproc: Make rproc_get_by_phandle() work for clusters Date: Tue, 21 Mar 2023 21:09:34 -0700 Message-ID: <20230322040933.924813-2-tanmay.shah@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230322040933.924813-1-tanmay.shah@amd.com> References: <20230322040933.924813-1-tanmay.shah@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000B8EF:EE_|BL0PR12MB4883:EE_ X-MS-Office365-Filtering-Correlation-Id: 297400be-68f6-44d2-b03c-08db2a8b5a23 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:(13230025)(4636009)(39860400002)(346002)(136003)(376002)(396003)(451199018)(40470700004)(36840700001)(46966006)(2616005)(41300700001)(186003)(426003)(4326008)(47076005)(83380400001)(478600001)(6666004)(336012)(316002)(110136005)(8676002)(70586007)(70206006)(26005)(1076003)(54906003)(36860700001)(44832011)(8936002)(5660300002)(82740400003)(81166007)(2906002)(36756003)(40460700003)(82310400005)(356005)(86362001)(40480700001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Mar 2023 04:10:20.3228 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 297400be-68f6-44d2-b03c-08db2a8b5a23 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: CY4PEPF0000B8EF.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR12MB4883 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org From: Mathieu Poirier Multi-cluster remoteproc designs typically have the following DT declaration: remoteproc_cluster { compatible = "soc,remoteproc-cluster"; core0: core0 { compatible = "soc,remoteproc-core" memory-region; sram; }; core1: core1 { compatible = "soc,remoteproc-core" memory-region; sram; } }; A driver exists for the cluster rather than the individual cores themselves so that operation mode and HW specific configurations applicable to the cluster can be made. Because the driver exists at the cluster level and not the individual core level, function rproc_get_by_phandle() fails to return the remoteproc associated with the phandled it is called for. This patch enhances rproc_get_by_phandle() by looking for the cluster's driver when the driver for the immediate remoteproc's parent is not found. Reported-by: Ben Levinsky Signed-off-by: Mathieu Poirier Tested-by: Ben Levinsky --- drivers/remoteproc/remoteproc_core.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 80072b6b6283..a3e7c8798381 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -2111,7 +2112,9 @@ EXPORT_SYMBOL(rproc_detach); #ifdef CONFIG_OF struct rproc *rproc_get_by_phandle(phandle phandle) { + struct platform_device *cluster_pdev; struct rproc *rproc = NULL, *r; + struct device_driver *driver; struct device_node *np; np = of_find_node_by_phandle(phandle); @@ -2122,7 +2125,30 @@ struct rproc *rproc_get_by_phandle(phandle phandle) list_for_each_entry_rcu(r, &rproc_list, node) { if (r->dev.parent && device_match_of_node(r->dev.parent, np)) { /* prevent underlying implementation from being removed */ - if (!try_module_get(r->dev.parent->driver->owner)) { + + /* + * If the remoteproc's parent has a driver, the + * remoteproc is not part of a cluster and we can use + * that driver. + */ + driver = r->dev.parent->driver; + + /* + * If the remoteproc's parent does not have a driver, + * look for the driver associated with the cluster. + */ + if (!driver) { + cluster_pdev = of_find_device_by_node(np->parent); + if (!cluster_pdev) { + dev_err(&r->dev, "can't get parent\n"); + break; + } + + driver = cluster_pdev->dev.driver; + put_device(&cluster_pdev->dev); + } + + if (!try_module_get(driver->owner)) { dev_err(&r->dev, "can't get owner\n"); break; } -- 2.25.1