From patchwork Fri Sep 15 18:43:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 1835156 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=nxp.com header.i=@nxp.com header.a=rsa-sha256 header.s=selector2 header.b=PmPzzvK/; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4RnNWd4qhYz1ygG for ; Sat, 16 Sep 2023 04:49:01 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236589AbjIOSsd (ORCPT ); Fri, 15 Sep 2023 14:48:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236998AbjIOSsa (ORCPT ); Fri, 15 Sep 2023 14:48:30 -0400 Received: from EUR05-VI1-obe.outbound.protection.outlook.com (mail-vi1eur05on2046.outbound.protection.outlook.com [40.107.21.46]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2805E3A94; Fri, 15 Sep 2023 11:45:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Gbj9NZ+KUU0uJAbCeuBkPgjWdmM+j5v8imj4YTJSp89jMtHpljv5jiINy3uESQzRBfBpZP8Z9k+pAuYHjDQ6KpNfmMATtJ/C202yU06B4t7VLyKJ/6Ud1j5HnxKaczz1D/xIa/QGkaNptD/FTk4FhtB8crJCSFfz8o1Z+elPvfU3J6Vn0qp4vu/GupUTRKoggkmowB65QuWGVxQy0AeFTplmwtHqcUtxgj8nd3+dkFc3gvI1mDWUQwxrAUSVwV5LgfIcCjimhBqbWWsCYi4tB3XfiFNbLy/DkTgRZtUA9aweIXSz3YgJ0SokE7gC2STPdhEv7X7fSMyGGh8wKfSAAg== 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=fa0JrSzrIWObI+M3MwG4/GbDzXhyXZdAEdLKKyybH2Q=; b=VUQFnWmVHASVylRMMUuQAEF4KLLo+hUgGt3usDvlI3Z8RouynkzM9+jSQ4EjzSvOKCm5KnZccUtjsRE3EE2cuwBo8LVIzOvd4sVjoIIKNQfs0qEa0xlBWHMfO2qxPZw9Ux6Wf9XuqFDmBfanWutOGpZfFJzB5qDVFcdRM9dPpbKky+xr8WdswB7n24w6Qp15RJx1Yaqca6PI7ccLM1qRQA/8cD0fxXKGp1vnB2zL3wVYGoKe2gDOjtJY263dRrcNDQykJFmXgsCDc3jTaYaWs1NRcTGgc8jq/36riUtCF1+57DJ8Z+hmDiZ+GuuiefsyqRg/pU45qKNM3Ct2HjZmSA== 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=fa0JrSzrIWObI+M3MwG4/GbDzXhyXZdAEdLKKyybH2Q=; b=PmPzzvK/p5Uh/xliv24cjTM87dU378bz7bnPkhaWWpAOrwwcpZpScyS0DhbBR/sRMTaTPSi/xUmCmfvObf7LEvLBkFxn43V3bv2A8e51pH9UEj7INBtPSfggM1YBFMTEpOBgGhI65TSIn9PPusAmcH7ZBrY/nERq7i8cmZjswAI= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by GV1PR04MB9184.eurprd04.prod.outlook.com (2603:10a6:150:28::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6792.21; Fri, 15 Sep 2023 18:43:28 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::aa90:117d:c1d0:346a]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::aa90:117d:c1d0:346a%3]) with mapi id 15.20.6792.020; Fri, 15 Sep 2023 18:43:27 +0000 From: Frank Li To: Minghuan Lian , Mingkai Hu , Roy Zang , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , linuxppc-dev@lists.ozlabs.org (open list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-pci@vger.kernel.org (open list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-arm-kernel@lists.infradead.org (moderated list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-kernel@vger.kernel.org (open list) Cc: imx@lists.linux.dev Subject: [PATCH 1/3] PCI: layerscape: add function pointer for exit_from_l2() Date: Fri, 15 Sep 2023 14:43:04 -0400 Message-Id: <20230915184306.2374670-1-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: SJ0PR03CA0186.namprd03.prod.outlook.com (2603:10b6:a03:2ef::11) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|GV1PR04MB9184:EE_ X-MS-Office365-Filtering-Correlation-Id: d87edcb0-45e6-48d9-c32f-08dbb61ba657 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM6PR04MB4838.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(39860400002)(136003)(376002)(366004)(396003)(451199024)(1800799009)(186009)(478600001)(6512007)(6506007)(6486002)(6666004)(52116002)(2906002)(4326008)(86362001)(8676002)(5660300002)(8936002)(41300700001)(316002)(110136005)(66476007)(66946007)(66556008)(38350700002)(1076003)(2616005)(26005)(921005)(36756003)(83380400001)(38100700002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: zqxivQnPFaQ6+A2jiF0kKNL7NpgqRKPsbr/YDXPCD0UmRTP/J46Zt9DtOdaqyUNj4k7xBBKMjie0isGbgmI28V+pWD5dvDFyRvSZSrswNcfP9lhEd5BUicJQ7XQO+pp7EamoR1LO928lvVAYqA+LYY2OHg02VNn3aGOSMRU6Hx3OqtLiDTeD9My3UpSEpyebWwatj2nf2T+uYKBfiNrwCOIMmKw/qBlX+BlepaSnq6bOILJIZphp75eOV8e21OLNF6vEEIH5nAVt3+LNykVBSSs2uTRxC/fxbtr6Q+3qeBLV6jmY72UbOWzGQb8BCD1qNqNuEWR58cqy/rJqR65kqiN3mvRi9zGP6q72cuICdPEs1hO/a9RYiIeaG4gXNHwfhgnHZNIOozuc6frbWZm/CXtYo/5K45gaujKbCoLkzbBJTxzEdMtVAh8mwLlNZQt5K4S5V3D3pJJoq+YHU4NRrUvqoyw29VLeogK7gdz0hjlynp7YXWUlFNQLUnU9xmKpJlVzKolJrPAMfgQu8M6IfNX4XyD35GlGkCGGJ3locK6diKizgN/pAnSniOTeo+KWfy0nYGM3SZy2yGkoYwzHvYOPueVukBW0+abjPcXqsdr5KvD6OnxJLz6UU+2ZQj03XM/oe8LmgbdwkXPo4o3Wdk1l3cQ2PCyV9TZmXfhtiA5s5mebpoX9p0XTTcs6aPJctp53gN56FbvZETqZn+h0HmOpPQKPCirTqdafEwtejoWKabP5SSBSM3D9PDpECz7Kiq7y58UZx7ymU/cycbzabhLvtUWxH2AEY71U2Ms68vMgWRYmfTG9iueaLfOyma7yaTSN+9aEIVVuNYtjgssHpr8Rt8CcOm9HKziH9mOGRAg0uQ5PBPCSzTxz+miacfGycad45UMwjoFI8T4elQv1/3Eq8jwS3XLmg1b8Yl6GOTOw2i7Wj3MdHzIcEfrYLQ8G2XqOGtDZkpdqTqY3AyTAQoTZt69kQxY/LqdmRnjje3bUxVVhuGRRgNTKZe9/ngzoc/ZvRO/NSwMjPkASWyLZJnaQiFlZrZPZzAmFGnyxpVe1DRkhU06TwXL70kYaV3qzC3mPR558G1SE318+a/PHZsa1EwWMNM/4+M5pAPTrHT8VKygtp4ShkBaHIinlR3YW3lNR32xQQ3rmbnoflCoPLy/Ah0WESzkiDynAv1Ybs0VX5gbBxo/t3jSnODbHyH/+w36+14Ol35OLAJXHypiNmB1jSaot9TUTauvMD8MecEasxwmbvmkIB4NvdXsZVuksHA7TiVlKRNhxHC02LKYaqlTEY1uqdVGXxFlwLMvcuxe+28GcYHMPE6WIpTt3Hp3FYyC8rL5b//7eHaD/iBpdbIp0mKEkiyGjL1/UV+qEarBnDIUnXZDZHbonVt99OzDLFgeO+hty/3FifkeLJmax0ePug+neekRFPB8L6NDw7gTRB8lIiC8PhhKtmbtZL4lyBJTDKHFcSo7aNY+KOgiuExo2O7pB/iK1Uu0rwgptdXRSJoSHrGZ9+9zsDEAlAcGewEeoTZaNsY+iyKA4wn+1vKne5Bz8zh95ppR13Cws3glrmovcoPvGVYNNXKSn30AD X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: d87edcb0-45e6-48d9-c32f-08dbb61ba657 X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB4838.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Sep 2023 18:43:27.6351 (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: NpogN6G/T+EQPwiVETH42g+cXHPXNssHdf9FBZPr37tEU0D/Sqk6HMhMY8vQC9u2uf68nS2zGK9R6/IcUjWjWA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR04MB9184 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Difference layerscape chip have not difference exit_from_l2() method. Using function pointer for ls1028. It prepare for other layerscape suspend/resume support. Signed-off-by: Frank Li --- drivers/pci/controller/dwc/pci-layerscape.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c index b931d597656f6..20c48c06e2248 100644 --- a/drivers/pci/controller/dwc/pci-layerscape.c +++ b/drivers/pci/controller/dwc/pci-layerscape.c @@ -39,6 +39,8 @@ struct ls_pcie_drvdata { const u32 pf_off; + const struct dw_pcie_host_ops *ops; + void (*exit_from_l2)(struct dw_pcie_rp *pp); bool pm_support; }; @@ -180,6 +182,7 @@ static const struct ls_pcie_drvdata ls1021a_drvdata = { static const struct ls_pcie_drvdata layerscape_drvdata = { .pf_off = 0xc0000, .pm_support = true, + .exit_from_l2 = ls_pcie_exit_from_l2, }; static const struct of_device_id ls_pcie_of_match[] = { @@ -213,7 +216,7 @@ static int ls_pcie_probe(struct platform_device *pdev) pcie->drvdata = of_device_get_match_data(dev); pci->dev = dev; - pci->pp.ops = &ls_pcie_host_ops; + pci->pp.ops = pcie->drvdata->ops ? pcie->drvdata->ops : &ls_pcie_host_ops; pcie->pci = pci; @@ -251,7 +254,7 @@ static int ls_pcie_resume_noirq(struct device *dev) if (!pcie->drvdata->pm_support) return 0; - ls_pcie_exit_from_l2(&pcie->pci->pp); + pcie->drvdata->exit_from_l2(&pcie->pci->pp); return dw_pcie_resume_noirq(pcie->pci); } From patchwork Fri Sep 15 18:43:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 1835155 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=nxp.com header.i=@nxp.com header.a=rsa-sha256 header.s=selector2 header.b=ALrIEt9K; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4RnNW32pBmz1ygG for ; Sat, 16 Sep 2023 04:48:31 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236368AbjIOSsB (ORCPT ); Fri, 15 Sep 2023 14:48:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236745AbjIOSrm (ORCPT ); Fri, 15 Sep 2023 14:47:42 -0400 Received: from EUR05-VI1-obe.outbound.protection.outlook.com (mail-vi1eur05on2088.outbound.protection.outlook.com [40.107.21.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 722E72D42; Fri, 15 Sep 2023 11:45:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=W3d1O0IDAWUNQJ2OQPySRbbZoNnVu4WSD/jUYqbiDT2/ZtO6fMRCv1WbYY/8VSo0jtCv89kwh27Q+cS/+bMgZDd11C/1bgakheZqeunJkWB/JF8EZ9vssgRSYgbN8SRxscupHr6V3cb7BRITAFDnBo/GEX+AGshxUQSoT3rhdWSeUQDKBiAeh9Xv08/faVO5uBQcU1NpDTdcMl6wspBjcJgymNJjcWBw9W+0/zubfamRcLjB8ENytsR6KrehUfLo89leBuPAkL3yxadIY7IXCvZtPdwwLcNNr0ul/8GhQTTWHSntHLLNu8GmMnLAsdIHVHe32fbHImSsPD/wYSZmkw== 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=QumOeoWtlkpcZNKxeTPO0UIw55ZdtSB9pWNTJIivito=; b=kgS3vsJM6pLd28hpoJSV7PwpDRs/7WBYNq/hAhJr7uRWgJrlpQsXbmatt8i5UPd//nLg7R0Bq/EVQ2qavShb5lvX4AnISZbxDFD8RBsuugQki8cMo8OGGdtK4MqPSmTmLHPEqgoOTHBnvp/iXoxRJMHqhH/xWaoGCIiRCurQZVj+5X3tRDjChcOPKyEYuxaawq9zJxVgzU0Z1J0Vby3U4YUbc7kgbxoqcnlzomnT7CEuqPH9FdGqtZh+OQSyBhe03glGc76TgvbJuNn1+DU/mCx3ZKtIVZMEwOLA7IyXtwFaVk1NeH8ySWCAF0kUMSsAW8cNgTVj1mqr6g55zl/7ew== 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=QumOeoWtlkpcZNKxeTPO0UIw55ZdtSB9pWNTJIivito=; b=ALrIEt9KSRnXqd2Y1Zi+/7H7SFZbqnYiJWIdEu25FLtczfCX3h8K4hnYvAm07wP/Tvins63LZLjh3wWkTAnvNkJnadKil248RC8pP9zq2CSFA3iIYa9XrxJvkrhyu7ZAyg9/SKtOsFYyTyKrAIpVwoXDYyRbVpH7cW3ct91lKdQ= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by GV1PR04MB9184.eurprd04.prod.outlook.com (2603:10a6:150:28::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6792.21; Fri, 15 Sep 2023 18:43:31 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::aa90:117d:c1d0:346a]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::aa90:117d:c1d0:346a%3]) with mapi id 15.20.6792.020; Fri, 15 Sep 2023 18:43:31 +0000 From: Frank Li To: Minghuan Lian , Mingkai Hu , Roy Zang , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , linuxppc-dev@lists.ozlabs.org (open list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-pci@vger.kernel.org (open list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-arm-kernel@lists.infradead.org (moderated list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-kernel@vger.kernel.org (open list) Cc: imx@lists.linux.dev Subject: [PATCH 2/3] PCI: layerscape: add suspend/resume for ls1021a Date: Fri, 15 Sep 2023 14:43:05 -0400 Message-Id: <20230915184306.2374670-2-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230915184306.2374670-1-Frank.Li@nxp.com> References: <20230915184306.2374670-1-Frank.Li@nxp.com> X-ClientProxiedBy: SJ0PR03CA0186.namprd03.prod.outlook.com (2603:10b6:a03:2ef::11) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|GV1PR04MB9184:EE_ X-MS-Office365-Filtering-Correlation-Id: 2c5d930a-77dd-49d9-536e-08dbb61ba858 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM6PR04MB4838.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(39860400002)(136003)(376002)(366004)(396003)(451199024)(1800799009)(186009)(15650500001)(478600001)(6512007)(6506007)(6486002)(6666004)(52116002)(2906002)(4326008)(86362001)(8676002)(5660300002)(8936002)(41300700001)(316002)(110136005)(66476007)(66946007)(66556008)(38350700002)(1076003)(2616005)(26005)(921005)(36756003)(83380400001)(38100700002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2c5d930a-77dd-49d9-536e-08dbb61ba858 X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB4838.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Sep 2023 18:43:30.9410 (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: qDx5pDnr2ez4W/2qaphZj1s47pcAYcIq8PsZFdzxQvxcsET9jOK6nUJubrYzVozaWqeizdIxrXv7OWkZHUP3hQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR04MB9184 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org ls1021a add suspend/resume support. Signed-off-by: Frank Li --- drivers/pci/controller/dwc/pci-layerscape.c | 88 ++++++++++++++++++++- 1 file changed, 87 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c index 20c48c06e2248..bc5a8ff1a26ce 100644 --- a/drivers/pci/controller/dwc/pci-layerscape.c +++ b/drivers/pci/controller/dwc/pci-layerscape.c @@ -35,6 +35,12 @@ #define PF_MCR_PTOMR BIT(0) #define PF_MCR_EXL2S BIT(1) +/* LS1021A PEXn PM Write Control Register */ +#define SCFG_PEXPMWRCR(idx) (0x5c + (idx) * 0x64) +#define PMXMTTURNOFF BIT(31) +#define SCFG_PEXSFTRSTCR 0x190 +#define PEXSR(idx) BIT(idx) + #define PCIE_IATU_NUM 6 struct ls_pcie_drvdata { @@ -48,6 +54,8 @@ struct ls_pcie { struct dw_pcie *pci; const struct ls_pcie_drvdata *drvdata; void __iomem *pf_base; + struct regmap *scfg; + int index; bool big_endian; }; @@ -170,13 +178,91 @@ static int ls_pcie_host_init(struct dw_pcie_rp *pp) return 0; } +static void ls1021a_pcie_send_turnoff_msg(struct dw_pcie_rp *pp) +{ + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct ls_pcie *pcie = to_ls_pcie(pci); + u32 val; + + if (!pcie->scfg) { + dev_dbg(pcie->pci->dev, "SYSCFG is NULL\n"); + return; + } + + /* Send Turn_off message */ + regmap_read(pcie->scfg, SCFG_PEXPMWRCR(pcie->index), &val); + val |= PMXMTTURNOFF; + regmap_write(pcie->scfg, SCFG_PEXPMWRCR(pcie->index), val); + + /* There are not register to check ACK, so wait PCIE_PME_TO_L2_TIMEOUT_US */ + mdelay(PCIE_PME_TO_L2_TIMEOUT_US/1000); + + /* Clear Turn_off message */ + regmap_read(pcie->scfg, SCFG_PEXPMWRCR(pcie->index), &val); + val &= ~PMXMTTURNOFF; + regmap_write(pcie->scfg, SCFG_PEXPMWRCR(pcie->index), val); +} + +static void ls1021a_pcie_exit_from_l2(struct dw_pcie_rp *pp) +{ + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct ls_pcie *pcie = to_ls_pcie(pci); + u32 val; + + regmap_read(pcie->scfg, SCFG_PEXSFTRSTCR, &val); + val |= PEXSR(pcie->index); + regmap_write(pcie->scfg, SCFG_PEXSFTRSTCR, val); + + regmap_read(pcie->scfg, SCFG_PEXSFTRSTCR, &val); + val &= ~PEXSR(pcie->index); + regmap_write(pcie->scfg, SCFG_PEXSFTRSTCR, val); +} + +static int ls1021a_pcie_host_init(struct dw_pcie_rp *pp) +{ + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct ls_pcie *pcie = to_ls_pcie(pci); + struct device *dev = pcie->pci->dev; + u32 index[2]; + int ret; + + ret = ls_pcie_host_init(pp); + if (ret) + return ret; + + pcie->scfg = syscon_regmap_lookup_by_phandle(dev->of_node, "fsl,pcie-scfg"); + if (IS_ERR(pcie->scfg)) { + ret = PTR_ERR(pcie->scfg); + dev_err(dev, "No syscfg phandle specified\n"); + pcie->scfg = NULL; + return ret; + } + + ret = of_property_read_u32_array(dev->of_node, "fsl,pcie-scfg", index, 2); + if (ret) { + pcie->scfg = NULL; + return ret; + } + + pcie->index = index[1]; + + return ret; +} + static const struct dw_pcie_host_ops ls_pcie_host_ops = { .host_init = ls_pcie_host_init, .pme_turn_off = ls_pcie_send_turnoff_msg, }; +static const struct dw_pcie_host_ops ls1021a_pcie_host_ops = { + .host_init = ls1021a_pcie_host_init, + .pme_turn_off = ls1021a_pcie_send_turnoff_msg, +}; + static const struct ls_pcie_drvdata ls1021a_drvdata = { - .pm_support = false, + .pm_support = true, + .ops = &ls1021a_pcie_host_ops, + .exit_from_l2 = ls1021a_pcie_exit_from_l2, }; static const struct ls_pcie_drvdata layerscape_drvdata = { From patchwork Fri Sep 15 18:43:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 1835154 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=nxp.com header.i=@nxp.com header.a=rsa-sha256 header.s=selector2 header.b=niQbs9gx; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4RnNTq5FLVz1ygG for ; Sat, 16 Sep 2023 04:47:27 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231899AbjIOSq6 (ORCPT ); Fri, 15 Sep 2023 14:46:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236965AbjIOSqk (ORCPT ); Fri, 15 Sep 2023 14:46:40 -0400 Received: from EUR05-VI1-obe.outbound.protection.outlook.com (mail-vi1eur05on2087.outbound.protection.outlook.com [40.107.21.87]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 334432D47; Fri, 15 Sep 2023 11:46:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=VGHFUePS8t/3S0CE6B0Pq+pUHXBNZPTO9Io6yTtVo1FvCwdvOF3w8iFW6oyGlsEX4Q/596QlKIjiJ9XLQYwPZZw37D9OjqCQ1IIYzPvgNo0gE6OI8ESMx29WMe/oQlvO5n9PqhZwPXRo5HRNzvmeASEEaWgPtzD9ZrBwzyGYQShfJMsVdgaHqmQoIBacn8tSxL9Trwg8Euv2BXoK86AmTzihR7z36dNdoe824lK27FZynWuyNcVeSkmxs9fOeVu9tqd5k20K8yvol6H1CLbOZaNlgII64ewgP4U2872CBGpJKAB+r+tI9sVGAP60FD0rBpKSeCHwLg3XOW6dvL32Rw== 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=yOAmxkk1FLpr83vxYch5SYzBkOWvzUHP+VAG6W4Homw=; b=KwR0jU8yWQCNppinBFjNgM5ODu0hhUKZadRGRJLwZCslkbEpRsXUp7PQKmebdnshihqE3iBngfu+NrPRSQVvTOOsrLQUJg6BLXUGt9A55szb8gMaxMrssSTgbO3QtkPIPgVgrT5giwBWOdxLD8p5sIAQMO5NE9pQBqbvwc+UGgeRrxvNEen1eJBpVAfIO+I3y9AeGBYXta8Y7z1jRX19K5FRgTMEDKwy+JRTFNoT8pZTJ4at/OyYV+xFYQ7e30sav820EaiDvxWXWNoXuKDycZv4Ahwee3HFB9HHT8KnP53wsw4kOaQwQmXl4pbPRwl/Eao+m4ngIgk/9J2hujG/8Q== 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=yOAmxkk1FLpr83vxYch5SYzBkOWvzUHP+VAG6W4Homw=; b=niQbs9gxA/f+4yw++Ux/+i3keVoGIU7j5Fou+C6EBuFbBFgjcb317RFrpxnYiank0mm8Qm2tys8+8MAgSt7Ea3GKRMdfo689BsEnBQO99t8dAJ2Il/1iFy1ek0d7Urmt02Ks4Ub/LCwjKFVrZVb8FZpznQ42KtEUtgF5I+Lu/Mc= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by GV1PR04MB9184.eurprd04.prod.outlook.com (2603:10a6:150:28::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6792.21; Fri, 15 Sep 2023 18:43:34 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::aa90:117d:c1d0:346a]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::aa90:117d:c1d0:346a%3]) with mapi id 15.20.6792.020; Fri, 15 Sep 2023 18:43:34 +0000 From: Frank Li To: Minghuan Lian , Mingkai Hu , Roy Zang , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , linuxppc-dev@lists.ozlabs.org (open list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-pci@vger.kernel.org (open list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-arm-kernel@lists.infradead.org (moderated list:PCI DRIVER FOR FREESCALE LAYERSCAPE), linux-kernel@vger.kernel.org (open list) Cc: imx@lists.linux.dev Subject: [PATCH 3/3] PCI: layerscape: add suspend/resume for ls1043a Date: Fri, 15 Sep 2023 14:43:06 -0400 Message-Id: <20230915184306.2374670-3-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230915184306.2374670-1-Frank.Li@nxp.com> References: <20230915184306.2374670-1-Frank.Li@nxp.com> X-ClientProxiedBy: SJ0PR03CA0186.namprd03.prod.outlook.com (2603:10b6:a03:2ef::11) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|GV1PR04MB9184:EE_ X-MS-Office365-Filtering-Correlation-Id: 5964a72b-a75b-4a12-bcc9-08dbb61baa51 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM6PR04MB4838.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(39860400002)(136003)(376002)(366004)(396003)(451199024)(1800799009)(186009)(15650500001)(478600001)(6512007)(6506007)(6486002)(6666004)(52116002)(2906002)(4326008)(86362001)(8676002)(5660300002)(8936002)(41300700001)(316002)(110136005)(66476007)(66946007)(66556008)(38350700002)(1076003)(2616005)(26005)(921005)(36756003)(83380400001)(38100700002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5964a72b-a75b-4a12-bcc9-08dbb61baa51 X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB4838.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Sep 2023 18:43:34.2398 (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: vTlLAEQjFlNkqHkgpiuyANJd9Q2Xgv+NpOCXhjXX13RU6uJkm8ym2xy6WFphAO9ze8jVD+TwE7OgptqQNfRDLg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR04MB9184 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org ls1043a add suspend/resume support. Signed-off-by: Frank Li --- drivers/pci/controller/dwc/pci-layerscape.c | 91 ++++++++++++++++++++- 1 file changed, 90 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c index bc5a8ff1a26ce..debabb9bb41f4 100644 --- a/drivers/pci/controller/dwc/pci-layerscape.c +++ b/drivers/pci/controller/dwc/pci-layerscape.c @@ -41,10 +41,20 @@ #define SCFG_PEXSFTRSTCR 0x190 #define PEXSR(idx) BIT(idx) +/* LS1043A PEX PME control register */ +#define SCFG_PEXPMECR 0x144 +#define PEXPME(idx) BIT(31 - (idx) * 4) + +/* LS1043A PEX LUT debug register */ +#define LS_PCIE_LDBG 0x7fc +#define LDBG_SR BIT(30) +#define LDBG_WE BIT(31) + #define PCIE_IATU_NUM 6 struct ls_pcie_drvdata { const u32 pf_off; + const u32 lut_off; const struct dw_pcie_host_ops *ops; void (*exit_from_l2)(struct dw_pcie_rp *pp); bool pm_support; @@ -54,6 +64,7 @@ struct ls_pcie { struct dw_pcie *pci; const struct ls_pcie_drvdata *drvdata; void __iomem *pf_base; + void __iomem *lut_base; struct regmap *scfg; int index; bool big_endian; @@ -116,6 +127,23 @@ static void ls_pcie_pf_writel(struct ls_pcie *pcie, u32 off, u32 val) iowrite32(val, pcie->pf_base + off); } +static u32 ls_pcie_lut_readl(struct ls_pcie *pcie, u32 off) +{ + if (pcie->big_endian) + return ioread32be(pcie->lut_base + off); + + return ioread32(pcie->lut_base + off); +} + +static void ls_pcie_lut_writel(struct ls_pcie *pcie, u32 off, u32 val) +{ + if (pcie->big_endian) + iowrite32be(val, pcie->lut_base + off); + else + iowrite32(val, pcie->lut_base + off); +} + + static void ls_pcie_send_turnoff_msg(struct dw_pcie_rp *pp) { struct dw_pcie *pci = to_dw_pcie_from_pp(pp); @@ -249,6 +277,54 @@ static int ls1021a_pcie_host_init(struct dw_pcie_rp *pp) return ret; } +static void ls1043a_pcie_send_turnoff_msg(struct dw_pcie_rp *pp) +{ + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct ls_pcie *pcie = to_ls_pcie(pci); + u32 val; + + if (!pcie->scfg) { + dev_dbg(pcie->pci->dev, "SYSCFG is NULL\n"); + return; + } + + /* Send Turn_off message */ + regmap_read(pcie->scfg, SCFG_PEXPMECR, &val); + val |= PEXPME(pcie->index); + regmap_write(pcie->scfg, SCFG_PEXPMECR, val); + + /* There are not register to check ACK, so wait PCIE_PME_TO_L2_TIMEOUT_US */ + mdelay(PCIE_PME_TO_L2_TIMEOUT_US/1000); + + /* Clear Turn_off message */ + regmap_read(pcie->scfg, SCFG_PEXPMECR, &val); + val &= ~PEXPME(pcie->index); + regmap_write(pcie->scfg, SCFG_PEXPMECR, val); +} + +static void ls1043a_pcie_exit_from_l2(struct dw_pcie_rp *pp) +{ + struct dw_pcie *pci = to_dw_pcie_from_pp(pp); + struct ls_pcie *pcie = to_ls_pcie(pci); + u32 val; + + val = ls_pcie_lut_readl(pcie, LS_PCIE_LDBG); + val |= LDBG_WE; + ls_pcie_lut_writel(pcie, LS_PCIE_LDBG, val); + + val = ls_pcie_lut_readl(pcie, LS_PCIE_LDBG); + val |= LDBG_SR; + ls_pcie_lut_writel(pcie, LS_PCIE_LDBG, val); + + val = ls_pcie_lut_readl(pcie, LS_PCIE_LDBG); + val &= ~LDBG_SR; + ls_pcie_lut_writel(pcie, LS_PCIE_LDBG, val); + + val = ls_pcie_lut_readl(pcie, LS_PCIE_LDBG); + val &= ~LDBG_WE; + ls_pcie_lut_writel(pcie, LS_PCIE_LDBG, val); +} + static const struct dw_pcie_host_ops ls_pcie_host_ops = { .host_init = ls_pcie_host_init, .pme_turn_off = ls_pcie_send_turnoff_msg, @@ -265,6 +341,18 @@ static const struct ls_pcie_drvdata ls1021a_drvdata = { .exit_from_l2 = ls1021a_pcie_exit_from_l2, }; +static const struct dw_pcie_host_ops ls1043a_pcie_host_ops = { + .host_init = ls1021a_pcie_host_init, /* the same as ls1021 */ + .pme_turn_off = ls1043a_pcie_send_turnoff_msg, +}; + +static const struct ls_pcie_drvdata ls1043a_drvdata = { + .lut_off = 0x10000, + .pm_support = true, + .ops = &ls1043a_pcie_host_ops, + .exit_from_l2 = ls1043a_pcie_exit_from_l2, +}; + static const struct ls_pcie_drvdata layerscape_drvdata = { .pf_off = 0xc0000, .pm_support = true, @@ -275,7 +363,7 @@ static const struct of_device_id ls_pcie_of_match[] = { { .compatible = "fsl,ls1012a-pcie", .data = &layerscape_drvdata }, { .compatible = "fsl,ls1021a-pcie", .data = &ls1021a_drvdata }, { .compatible = "fsl,ls1028a-pcie", .data = &layerscape_drvdata }, - { .compatible = "fsl,ls1043a-pcie", .data = &ls1021a_drvdata }, + { .compatible = "fsl,ls1043a-pcie", .data = &ls1043a_drvdata }, { .compatible = "fsl,ls1046a-pcie", .data = &layerscape_drvdata }, { .compatible = "fsl,ls2080a-pcie", .data = &layerscape_drvdata }, { .compatible = "fsl,ls2085a-pcie", .data = &layerscape_drvdata }, @@ -314,6 +402,7 @@ static int ls_pcie_probe(struct platform_device *pdev) pcie->big_endian = of_property_read_bool(dev->of_node, "big-endian"); pcie->pf_base = pci->dbi_base + pcie->drvdata->pf_off; + pcie->lut_base = pci->dbi_base + pcie->drvdata->lut_off; if (!ls_pcie_is_bridge(pcie)) return -ENODEV;