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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" , "mark.rutland@arm.com" , "l.subrahmanya@mobiveil.co.in" , "shawnguo@kernel.org" , Leo Li , "lorenzo.pieralisi@arm.com" CC: Mingkai Hu , "M.h. Lian" , Xiaowei Bao , "Z.q. Hou" Subject: [PATCH 20/23] PCI: mobiveil: change prototype of function mobiveil_host_init Thread-Topic: [PATCH 20/23] PCI: mobiveil: change prototype of function mobiveil_host_init Thread-Index: AQHUddOWzQcefL0KukGVWvbBBU/BLA== Date: Tue, 6 Nov 2018 13:21:12 +0000 Message-ID: <20181106131807.29951-21-Zhiqiang.Hou@nxp.com> References: <20181106131807.29951-1-Zhiqiang.Hou@nxp.com> In-Reply-To: <20181106131807.29951-1-Zhiqiang.Hou@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HK0PR03CA0008.apcprd03.prod.outlook.com (2603:1096:203:2e::20) To DB5PR04MB1221.eurprd04.prod.outlook.com (2a01:111:e400:51c2::27) authentication-results: spf=none (sender IP is ) smtp.mailfrom=zhiqiang.hou@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.73] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DB5PR04MB1414;6:zdy1Je5SNs96dLwMcumxq/k57WAY+aPySkXkuasD+bIgVBA1eJnOK1Y1+lIFe5UNeQIwzFkNMH82h61ItFZH8bjk93ggGzLfVpWeDrvYkkiTbBghh9UKm6UDbm+P8tXG/zaJPlru3QS99u1U4pIkbDbabs4DJ05O4Y+ScNBsUc+FMjFFTm39EfX43xZMJj63A6SiGgwHMFHOjg5gzLHcj63T0KOck1fXiMkngkLJ7ypJ38gUPyTDT4RDJFf5CDEnPg/9mxy6U8f43bLZD4d1k9bgvSCQCIlqPTu8PjZRHMM8ewu2OYO4Rt5qLyiths7fkB8WOFDQGx5CvQXkdZO4664iAIPghR/yCdxLS1YVigQHB7kDZHGsVvzXyBRB1MvZS2X6oGC8UtUVG19my6ClsCBY4nlyFd0aYgKFDDxtmwEzRX9io1GBmx03zkOu9lYxcxIO0Pt5XXRXEyxmZIxQ1w==;5:1bf1XCeEcM+SEeW/D4EQ4l4DQFQf1ksPVi+ZfskPk1TYgIbAJtrSGO1G3kO4ZsJ9D/zougv3GA59fPzpu7CN+YIkM2rOW8aQJ1K0nO/zcBJbIcLlfvykN54ocArDqPrXJW2PkANePv/VwWn5wVCBiqud1dNk/9kpKoPWTpc/JdE=;7:peNzPUTDdEnBf8R682/ZdQhteCQ7DZjEs6ypsXkG1vKRA2BJKUufsoe2iKVi58I2OnI6PlrCouvi2vb4hmLwKlzGluEix3GZFG1Y8xM+sxBIm/RtBzqznw9R8Q+eAaTY1jWJV6Y6wWsPc96rvj5xNw== x-ms-office365-filtering-correlation-id: a9379a8c-0716-4b26-8fc7-08d643eab8ad x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:DB5PR04MB1414; x-ms-traffictypediagnostic: DB5PR04MB1414: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3002001)(10201501046)(93006095)(93001095)(3231382)(944501410)(52105095)(6055026)(148016)(149066)(150057)(6041310)(20161123562045)(20161123558120)(20161123564045)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(201708071742011)(7699051)(76991095);SRVR:DB5PR04MB1414;BCL:0;PCL:0;RULEID:;SRVR:DB5PR04MB1414; x-forefront-prvs: 0848C1A6AA x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(39860400002)(366004)(396003)(376002)(346002)(136003)(189003)(199004)(97736004)(66066001)(8936002)(81156014)(81166006)(7416002)(8676002)(5660300001)(71200400001)(71190400001)(478600001)(6486002)(6116002)(2900100001)(1076002)(53936002)(6436002)(6512007)(305945005)(4326008)(25786009)(7736002)(105586002)(106356001)(68736007)(2906002)(3846002)(256004)(26005)(14444005)(486006)(2501003)(14454004)(99286004)(52116002)(76176011)(36756003)(110136005)(386003)(6506007)(102836004)(54906003)(86362001)(186003)(446003)(11346002)(316002)(2616005)(476003)(2201001)(921003)(1121003);DIR:OUT;SFP:1101;SCL:1;SRVR:DB5PR04MB1414;H:DB5PR04MB1221.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: gahF5gYBiejRAEJgmaYIGAAjXUL+PyfE0awzRMRmYx8FTYrejyAe8pVmGGwOj3J60n1ut+lYaSE7p0WiWliYFqrKKUTugCbwOjtKJfLjiCBXshXGwSPAOzAyCYIpPMhRxVYL0hE1NQXoaOC118o4bTTZm3Wp1MwTr77cHQzvAcgwDnKcJKUHBl5vPB3T4nSFGlyJYwVgD5OHaz44HRrg8HB7ed6w96T/9qdTfwZnJI+VvonkG3rJbp9a0+bi3Jtw9PL8hT3cyvEQRfwJUJU9ZyLFzbCRVU14QOb/rUtb99cfVAakq4EUZvdLjwXXp3uOuQhtjJRFeEbcV/7idJOlwzcpPXvmF3lCXBBn2KSI6H0= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: a9379a8c-0716-4b26-8fc7-08d643eab8ad X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Nov 2018 13:21:12.5099 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB5PR04MB1414 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Hou Zhiqiang Add a parameter 'bool reinit' to identify re-initializing the host controller, and export it. Signed-off-by: Hou Zhiqiang --- .../pci/controller/mobiveil/pcie-mobiveil-host.c | 16 +++++++++------- drivers/pci/controller/mobiveil/pcie-mobiveil.h | 1 + 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c b/drivers= /pci/controller/mobiveil/pcie-mobiveil-host.c index de24fedcb92d..b1d67a697ecc 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c @@ -213,7 +213,7 @@ static void mobiveil_pcie_enable_msi(struct mobiveil_pc= ie *pcie) writel_relaxed(1, pcie->apb_csr_base + MSI_ENABLE_OFFSET); } =20 -static int mobiveil_host_init(struct mobiveil_pcie *pcie) +int mobiveil_host_init(struct mobiveil_pcie *pcie, bool reinit) { u32 value, pab_ctrl, type; struct resource_entry *win; @@ -225,11 +225,13 @@ static int mobiveil_host_init(struct mobiveil_pcie *p= cie) for (i =3D 0; i < pcie->ppio_wins; i++) mobiveil_pcie_disable_ib_win(pcie, i); =20 - /* setup bus numbers */ - value =3D csr_readl(pcie, PCI_PRIMARY_BUS); - value &=3D 0xff000000; - value |=3D 0x00ff0100; - csr_writel(pcie, value, PCI_PRIMARY_BUS); + if (!reinit) { + /* setup bus numbers */ + value =3D csr_readl(pcie, PCI_PRIMARY_BUS); + value &=3D 0xff000000; + value |=3D 0x00ff0100; + csr_writel(pcie, value, PCI_PRIMARY_BUS); + } =20 /* * program Bus Master Enable Bit in Command Register in PAB Config @@ -570,7 +572,7 @@ int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie= ) * configure all inbound and outbound windows and prepare the RC for * config access */ - ret =3D mobiveil_host_init(pcie); + ret =3D mobiveil_host_init(pcie, false); if (ret) { dev_err(dev, "Failed to initialize host\n"); goto error; diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/= controller/mobiveil/pcie-mobiveil.h index 933c2f34bc52..51195db09347 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h @@ -165,6 +165,7 @@ struct mobiveil_pcie { }; =20 int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie); +int mobiveil_host_init(struct mobiveil_pcie *pcie, bool reinit); bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie); int mobiveil_bringup_link(struct mobiveil_pcie *pcie); void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_a= ddr, --=20 2.17.1