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Hou" X-Patchwork-Id: 1197798 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) 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="MIgWMexk"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47HpWd4cfPz9sPc for ; Wed, 20 Nov 2019 14:46:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727728AbfKTDqB (ORCPT ); Tue, 19 Nov 2019 22:46:01 -0500 Received: from mail-eopbgr70085.outbound.protection.outlook.com ([40.107.7.85]:34753 "EHLO EUR04-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727695AbfKTDqA (ORCPT ); Tue, 19 Nov 2019 22:46:00 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YKAlWEWkH3MsXwO0r9fLuRnboYakOqkTpQhSB6AJSoV66gTy1wPuIYBYaiQlpDuA19U1Ywmg7DAtUnj1XH0z0sFxFOkHqvmf0Ja7Zok1AFiWfaANcODOc35B7suordhSzjp+/pT5R0zz62Ff/v06AMYPvknlU9i02JdAvgxgJn/sL+vlG5fM9DWCzgDml30ISwmUQm2NjSJCE0eg9Gjk85K0QYqWAE5HswsPrxowQJ9HW9Y87GbEo+Ug6XaID3VnWydVCXPGu5ICUckxgqGtHDanErc+Af/ELlWEoQJPnXhUhRAhuRO/v7of1hhQ0TC+Lm4bCerPOZfYnytm9Zy7QQ== 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=irUxrJ91vUjvc++H0x9KCLnC8wVeqmY2KZwUu4nyM3M=; b=ELj3SXSZwQBjNzHpk8TSVud+kN/RdaEHoqGg10J3hCZ7mWwvlONoKLqV3sfk1FnO2M2bmeDfLxAzzd897TB7AkrrOtY0jQBxKCgYyCN4eG9x5hJaqQIwbq5llx2lvMwmamL316sbGAwbur7CLY1J5nm+Mea8Ux2WWF7foKL0bWrTa5OU/esaL78Mg+VDHmu0u1fjcaZRemSxKtDRTHZJXwN7XSDNijeODIJq/mxY7zPUY/MfgTVwol+N51klX05VtSerRyPTidP3l85emmEyvStSN0LSSjLz71GThgDczdtvg3/VzmS4vHhHipnh02LDXeWKCIzk7UZoTXQxPLGAnA== 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=irUxrJ91vUjvc++H0x9KCLnC8wVeqmY2KZwUu4nyM3M=; b=MIgWMexkERXWJekD/qEV7enwq29pgv3UrYIfkzXTdQ7Hd+npyeEVqhEkwTew+HIAprGo/zQMPTel4WGucOQUrDdYNyynk1Mc4HsURIzgou8NN4eFZkBXlKJo9awu4iP5VThvk1DiGNAq86qwu+FNxBvYZlO4sAJQUmLvKUuATno= Received: from DB8PR04MB6747.eurprd04.prod.outlook.com (20.179.250.159) by DB8PR04MB5657.eurprd04.prod.outlook.com (20.179.9.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2451.23; Wed, 20 Nov 2019 03:45:57 +0000 Received: from DB8PR04MB6747.eurprd04.prod.outlook.com ([fe80::898f:3cd6:c225:7219]) by DB8PR04MB6747.eurprd04.prod.outlook.com ([fe80::898f:3cd6:c225:7219%7]) with mapi id 15.20.2451.029; Wed, 20 Nov 2019 03:45:57 +0000 From: "Z.q. Hou" To: "linux-pci@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "bhelgaas@google.com" , "robh+dt@kernel.org" , "arnd@arndb.de" , "mark.rutland@arm.com" , "l.subrahmanya@mobiveil.co.in" , "shawnguo@kernel.org" , "m.karthikeyan@mobiveil.co.in" , Leo Li , "lorenzo.pieralisi@arm.com" , "catalin.marinas@arm.com" , "will.deacon@arm.com" , "andrew.murray@arm.com" CC: Mingkai Hu , "M.h. Lian" , Xiaowei Bao , "Z.q. Hou" Subject: [PATCHv9 06/12] PCI: mobiveil: Add callback function for link up check Thread-Topic: [PATCHv9 06/12] PCI: mobiveil: Add callback function for link up check Thread-Index: AQHVn1UEYLWmKTdIpEiL1397xUm0IA== Date: Wed, 20 Nov 2019 03:45:57 +0000 Message-ID: <20191120034451.30102-7-Zhiqiang.Hou@nxp.com> References: <20191120034451.30102-1-Zhiqiang.Hou@nxp.com> In-Reply-To: <20191120034451.30102-1-Zhiqiang.Hou@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HK2PR02CA0199.apcprd02.prod.outlook.com (2603:1096:201:20::11) To DB8PR04MB6747.eurprd04.prod.outlook.com (2603:10a6:10:10b::31) authentication-results: spf=none (sender IP is ) smtp.mailfrom=zhiqiang.hou@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [119.31.174.73] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 2de09eb7-1dc6-4518-6710-08d76d6c269e x-ms-traffictypediagnostic: DB8PR04MB5657:|DB8PR04MB5657: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6430; x-forefront-prvs: 02272225C5 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(1496009)(4636009)(366004)(346002)(396003)(39860400002)(136003)(376002)(199004)(189003)(2201001)(54906003)(86362001)(36756003)(256004)(7736002)(305945005)(6116002)(66066001)(3846002)(110136005)(316002)(71190400001)(7416002)(1076003)(71200400001)(52116002)(2501003)(4326008)(5660300002)(66476007)(476003)(64756008)(66556008)(11346002)(446003)(76176011)(2616005)(66946007)(6512007)(66446008)(8676002)(386003)(6506007)(2906002)(99286004)(102836004)(6486002)(81166006)(81156014)(8936002)(50226002)(186003)(26005)(478600001)(14454004)(486006)(6436002)(25786009)(921003)(1121003); DIR:OUT; SFP:1101; SCL:1; SRVR:DB8PR04MB5657; H:DB8PR04MB6747.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: BCL:0; x-microsoft-antispam-message-info: sHiIvr1qFtacDtCOshqj15NnMQ6Bkr4JOJlJPeNME9Ium0ASDPjhMhsT5nnGeYscODpP5tFLjqHjIBMAKvJXQp0QLxl6xgLl/SAvpMDeXt+sDdMvI18ZR0hI2t4sLst5peNo8KkolgehPgU/8Jp6uBxxD+sixrMDQ/VDKn8jqtks5lBZ0s23MqYZoVgbf/8oOKyJK+p6qai1zhSLbUSXG2jntaBIjbtoRAV6ApEdALC2I0OQqRY9flVYKuBoXNLEq8UybsQre3S1PpGJkRJ9mTyYYGqYFoc0O5hdmRiP9SB0iIBoF1BQQO8Yu85Fio/2gzUypUBNPXzo6JkAchm098MvGGa+rY1BPLU6keU4AS+G7x2eL+URadkBoObDCEF71UQbqIcytD1wVBhPdW4fXEJi7glK3p6cH0TImGRv0dsELNwKdUc9vstUNX4MlA5A MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2de09eb7-1dc6-4518-6710-08d76d6c269e X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Nov 2019 03:45:57.0833 (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: 1tvzEl/jNklY0Io5H4w8PSXhWrTZkDFRGYc31gSNMIr0/qSzA8piMnrMiu8biMUtefvt1gRPd+UxOxHiKD7xxQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR04MB5657 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Hou Zhiqiang The platforms, in which the Mobiveil GPEX is integrated, may have their specific mechanism to check link up status. This patch is to enable these platforms to implement theirs. Signed-off-by: Hou Zhiqiang Reviewed-by: Andrew Murray --- V9: - New patch splited from the #1 of V8 patches to make it easy to review. drivers/pci/controller/mobiveil/pcie-mobiveil.c | 3 +++ drivers/pci/controller/mobiveil/pcie-mobiveil.h | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.c b/drivers/pci/controller/mobiveil/pcie-mobiveil.c index 2773f823c9ea..b9ed2d95641c 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.c +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.c @@ -125,6 +125,9 @@ void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off, bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie) { + if (pcie->ops->link_up) + return pcie->ops->link_up(pcie); + return (mobiveil_csr_readl(pcie, LTSSM_STATUS) & LTSSM_STATUS_L0_MASK) == LTSSM_STATUS_L0; } diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h index 18d85806a7fc..95d2e7c809b8 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h @@ -148,6 +148,10 @@ struct root_port { struct pci_host_bridge *bridge; }; +struct mobiveil_pab_ops { + int (*link_up)(struct mobiveil_pcie *pcie); +}; + struct mobiveil_pcie { struct platform_device *pdev; void __iomem *csr_axi_slave_base; /* root port config base */ @@ -157,6 +161,7 @@ struct mobiveil_pcie { int ppio_wins; int ob_wins_configured; /* configured outbound windows */ int ib_wins_configured; /* configured inbound windows */ + const struct mobiveil_pab_ops *ops; struct root_port rp; };