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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" 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; 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Lian" , "Z.q. Hou" , Xiaowei Bao , Mingkai Hu Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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_pcie *pcie) writel_relaxed(1, pcie->apb_csr_base + MSI_ENABLE_OFFSET); } -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 *pcie) for (i = 0; i < pcie->ppio_wins; i++) mobiveil_pcie_disable_ib_win(pcie, i); - /* setup bus numbers */ - value = csr_readl(pcie, PCI_PRIMARY_BUS); - value &= 0xff000000; - value |= 0x00ff0100; - csr_writel(pcie, value, PCI_PRIMARY_BUS); + if (!reinit) { + /* setup bus numbers */ + value = csr_readl(pcie, PCI_PRIMARY_BUS); + value &= 0xff000000; + value |= 0x00ff0100; + csr_writel(pcie, value, PCI_PRIMARY_BUS); + } /* * 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 = mobiveil_host_init(pcie); + ret = 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 { }; 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_addr,