From patchwork Thu Aug 1 20:16:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roy Pledge X-Patchwork-Id: 1140745 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4601wG0h16z9s7T for ; Fri, 2 Aug 2019 06:23:58 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=nxp.com header.i=@nxp.com header.b="dkzwf6eh"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4601wF6n7GzDqdG for ; Fri, 2 Aug 2019 06:23:57 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nxp.com (client-ip=40.107.6.88; helo=eur04-db3-obe.outbound.protection.outlook.com; envelope-from=roy.pledge@nxp.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=nxp.com header.i=@nxp.com header.b="dkzwf6eh"; dkim-atps=neutral Received: from EUR04-DB3-obe.outbound.protection.outlook.com (mail-eopbgr60088.outbound.protection.outlook.com [40.107.6.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4601mL0D8MzDqk5 for ; Fri, 2 Aug 2019 06:17:06 +1000 (AEST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=COMNkqqzs5CsKt/H7wpCMVjTTkVi14dr6AG3zti6O+Iiyn+PVb+XywUn8QTurHnNXqW1fw35k/0sa+9GNDNS6XfMO9XlTmWnkh0bjvLbvmNHpQv1GuryucqDIXwSq1K2/7DFmshyJulQwnF9T0NQoxqAlnbiPwmIC/2mj/IajmyKh3fVY+WU/5vOGbVDGE17bqieqYRb8QIv3mULkqgh+KBKeKwkzgQoNWyaOjABxHHnGSaQgN9G2w+fIWSlFqxt9AbVPeyxNS1MW0kxj1p7HXGi8gth3hul2hALIiv75uFTRh3GgNut4NIFLN1u8D3DyTa8ETfExaS10eY/RWEUvw== 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=3Rc8vExPXZwB8d4MZ9x7eOtOwLPlGtoP7wKctkSKqwI=; b=WtH0aP3OPGRC94SsYkQJzicX/cm8QtbGz6J71rfCM0iqvJLQGf5ENh8cKFQ+r2FmFw2noNiglBkjgkVASyceBX46SSyWuuV5u5VIgMW8AIczZE/Xk4qzHq1iTrHe+U/r0cinYr47Y3zT9hbFdtvYssVjDhCVnsAyPS4TiK+v33ZGN3xTV29uBBVbcZNIOpBiiiBET3CwPrfwq6YQO70lDr2liiTBPGMnghIL3uNdu7m3WdSFEjYVXniIpEj7TmwlWAJjA22ZqL8wvo3xHxWWNPd6VA/jsNi4pCvuMOoSob/l2tv9Qu/Qb9YIuzO2uBnOIXzzyk8j93rgpApwiTLR4A== ARC-Authentication-Results: i=1; mx.microsoft.com 1;spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com;arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=3Rc8vExPXZwB8d4MZ9x7eOtOwLPlGtoP7wKctkSKqwI=; b=dkzwf6ehWUSsFxnj5bVwLOBn9xNIvvwFDQSCIr31mq3P0HwGJXCgap/iCH6NB44zlN7LhYK1slpIHUgBrjrQcqRc/vepEx3ywBIYXvF95EM2p7viIOmrXbO+i8vfU+fvsTrjw5JeTV5UIguu5HLvfDHazL+55l/oxKiE2ubNUs0= Received: from VE1PR04MB6463.eurprd04.prod.outlook.com (20.179.233.20) by VE1PR04MB6656.eurprd04.prod.outlook.com (20.179.235.95) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2115.10; Thu, 1 Aug 2019 20:16:55 +0000 Received: from VE1PR04MB6463.eurprd04.prod.outlook.com ([fe80::8fc:e04c:fbb6:4f1f]) by VE1PR04MB6463.eurprd04.prod.outlook.com ([fe80::8fc:e04c:fbb6:4f1f%7]) with mapi id 15.20.2115.005; Thu, 1 Aug 2019 20:16:55 +0000 From: Roy Pledge To: "linuxppc-dev@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Leo Li Subject: [PATCH v3 2/7] soc/fsl/qbman: Cleanup buffer pools if BMan was initialized prior to bootup Thread-Topic: [PATCH v3 2/7] soc/fsl/qbman: Cleanup buffer pools if BMan was initialized prior to bootup Thread-Index: AQHVSKYQDdAXIzwWDEO2MM4P3XgCBw== Date: Thu, 1 Aug 2019 20:16:55 +0000 Message-ID: <1564690599-29713-3-git-send-email-roy.pledge@nxp.com> References: <1564690599-29713-1-git-send-email-roy.pledge@nxp.com> In-Reply-To: <1564690599-29713-1-git-send-email-roy.pledge@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: SN4PR0501CA0130.namprd05.prod.outlook.com (2603:10b6:803:42::47) To VE1PR04MB6463.eurprd04.prod.outlook.com (2603:10a6:803:11d::20) authentication-results: spf=none (sender IP is ) smtp.mailfrom=roy.pledge@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [72.142.119.78] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 38197fa7-df37-48c1-fe59-08d716bd32c9 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020); SRVR:VE1PR04MB6656; x-ms-traffictypediagnostic: VE1PR04MB6656: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:494; x-forefront-prvs: 01165471DB x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(39860400002)(346002)(136003)(376002)(396003)(366004)(199004)(189003)(386003)(6506007)(305945005)(7736002)(71200400001)(71190400001)(68736007)(14454004)(36756003)(54906003)(316002)(110136005)(6116002)(3846002)(486006)(186003)(66066001)(6436002)(256004)(26005)(2201001)(6636002)(3450700001)(44832011)(6486002)(102836004)(2906002)(446003)(476003)(2616005)(50226002)(64756008)(66446008)(66476007)(25786009)(81166006)(66946007)(52116002)(5660300002)(11346002)(76176011)(478600001)(66556008)(8676002)(86362001)(81156014)(8936002)(99286004)(6512007)(4326008)(2501003)(53936002)(43066004); DIR:OUT; SFP:1101; SCL:1; SRVR:VE1PR04MB6656; H:VE1PR04MB6463.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: Q3/DR5KhiU0n0aX2rXM4WagF1mgdLPXZQtkbNCGb56MN3TNdsEPnGzrS3q3QTS/2ZI1hiuRnW52+WPxJorOlFdPM0Em1RvZXGraqL/Yq6iLSgVWmB745yosP4aPu54wXTRBddfYTRrK9ymkAFtNjKS6vIY1mwJsZJBU1AuJMKkCzwltBZaqv5jUPaj0noBRPLz/ns5ea7RdjmjyrKZrOuWkzc9z4LLFzViYh/IprOEm7oKXkUAbXdFK920WNDjOADPDGNo5qRk9MHcepIPBCDAgZhy2a7LzQlE43LlnwqSZJu1y1z5SFo+5WKYqSbSlKoecpwtKDOJx8oa2yjqsej5Aw113vkDGdS6VRR6Q8v1DO99zJsa1cKcxbrL9hItVCw7U4zyWe75qKj57RB206vfv9lxcx/zqzdJGXNy/WGlc= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 38197fa7-df37-48c1-fe59-08d716bd32c9 X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Aug 2019 20:16:55.4822 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: roy.pledge@nxp.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR04MB6656 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Roy Pledge Cc: Roy Pledge , Laurentiu Tudor , Madalin-cristian Bucur Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Clean the BMan buffer pools if the device had been initialized previously. This will ensure a consistent state if the kernel was soft restarted (kexec for example) Signed-off-by: Roy Pledge --- drivers/soc/fsl/qbman/bman.c | 17 +++++++++-------- drivers/soc/fsl/qbman/bman_ccsr.c | 10 ++++++++++ drivers/soc/fsl/qbman/bman_portal.c | 18 +++++++++++++++++- drivers/soc/fsl/qbman/bman_priv.h | 5 +++++ 4 files changed, 41 insertions(+), 9 deletions(-) diff --git a/drivers/soc/fsl/qbman/bman.c b/drivers/soc/fsl/qbman/bman.c index f84ab59..f4fb527 100644 --- a/drivers/soc/fsl/qbman/bman.c +++ b/drivers/soc/fsl/qbman/bman.c @@ -635,30 +635,31 @@ int bman_p_irqsource_add(struct bman_portal *p, u32 bits) return 0; } -static int bm_shutdown_pool(u32 bpid) +int bm_shutdown_pool(u32 bpid) { + int err = 0; struct bm_mc_command *bm_cmd; union bm_mc_result *bm_res; + + struct bman_portal *p = get_affine_portal(); while (1) { - struct bman_portal *p = get_affine_portal(); /* Acquire buffers until empty */ bm_cmd = bm_mc_start(&p->p); bm_cmd->bpid = bpid; bm_mc_commit(&p->p, BM_MCC_VERB_CMD_ACQUIRE | 1); if (!bm_mc_result_timeout(&p->p, &bm_res)) { - put_affine_portal(); pr_crit("BMan Acquire Command timedout\n"); - return -ETIMEDOUT; + err = -ETIMEDOUT; + goto done; } if (!(bm_res->verb & BM_MCR_VERB_ACQUIRE_BUFCOUNT)) { - put_affine_portal(); /* Pool is empty */ - return 0; + goto done; } - put_affine_portal(); } - +done: + put_affine_portal(); return 0; } diff --git a/drivers/soc/fsl/qbman/bman_ccsr.c b/drivers/soc/fsl/qbman/bman_ccsr.c index dc6d7e5..cb24a08 100644 --- a/drivers/soc/fsl/qbman/bman_ccsr.c +++ b/drivers/soc/fsl/qbman/bman_ccsr.c @@ -195,6 +195,16 @@ int bman_is_probed(void) } EXPORT_SYMBOL_GPL(bman_is_probed); +int bman_requires_cleanup(void) +{ + return __bman_requires_cleanup; +} + +void bman_done_cleanup(void) +{ + __bman_requires_cleanup = 0; +} + static int fsl_bman_probe(struct platform_device *pdev) { int ret, err_irq; diff --git a/drivers/soc/fsl/qbman/bman_portal.c b/drivers/soc/fsl/qbman/bman_portal.c index c78cc69..cc06d95 100644 --- a/drivers/soc/fsl/qbman/bman_portal.c +++ b/drivers/soc/fsl/qbman/bman_portal.c @@ -100,7 +100,7 @@ static int bman_portal_probe(struct platform_device *pdev) struct device_node *node = dev->of_node; struct bm_portal_config *pcfg; struct resource *addr_phys[2]; - int irq, cpu, err; + int irq, cpu, err, i; err = bman_is_probed(); if (!err) @@ -181,6 +181,22 @@ static int bman_portal_probe(struct platform_device *pdev) if (!cpu_online(cpu)) bman_offline_cpu(cpu); + if (__bman_portals_probed == 1 && bman_requires_cleanup()) { + /* + * BMan wasn't reset prior to boot (Kexec for example) + * Empty all the buffer pools so they are in reset state + */ + for (i = 0; i < BM_POOL_MAX; i++) { + err = bm_shutdown_pool(i); + if (err) { + dev_err(dev, "Failed to shutdown bpool %d\n", + i); + goto err_portal_init; + } + } + bman_done_cleanup(); + } + return 0; err_portal_init: diff --git a/drivers/soc/fsl/qbman/bman_priv.h b/drivers/soc/fsl/qbman/bman_priv.h index 751ce90..aa3981e 100644 --- a/drivers/soc/fsl/qbman/bman_priv.h +++ b/drivers/soc/fsl/qbman/bman_priv.h @@ -76,3 +76,8 @@ int bman_p_irqsource_add(struct bman_portal *p, u32 bits); const struct bm_portal_config * bman_get_bm_portal_config(const struct bman_portal *portal); + +int bman_requires_cleanup(void); +void bman_done_cleanup(void); + +int bm_shutdown_pool(u32 bpid);