From patchwork Tue Jan 29 08:09:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Z.Q. Hou" X-Patchwork-Id: 10785677 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 69BE013B4 for ; Tue, 29 Jan 2019 08:09:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C0C12B08D for ; Tue, 29 Jan 2019 08:09:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4F6CB2B133; Tue, 29 Jan 2019 08:09:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 90D4D2B08D for ; Tue, 29 Jan 2019 08:09:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727762AbfA2IJb (ORCPT ); Tue, 29 Jan 2019 03:09:31 -0500 Received: from mail-eopbgr30044.outbound.protection.outlook.com ([40.107.3.44]:27072 "EHLO EUR03-AM5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725775AbfA2IJa (ORCPT ); Tue, 29 Jan 2019 03:09:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8cWrK/UuCkZ80PWgnXNddESJ6NjSh/GrdJ4bMZl8e44=; b=c68d5zIswGyX0nmpfWk25MMDDPGv85IGCjH4aEVqnZTlud0vUoaaqBskpJjFA0KYmkQOEeiIM1ZNmKdT2+N44FO3TnwS4q8JAHRKY2o3kOPfk4pYGa5j9agZnvyphb5dwtAX0P0gxs4SU/gGzoCGVNM5uICaX/KXykhfKPCc9uk= Received: from AM6PR04MB5781.eurprd04.prod.outlook.com (20.179.3.19) by AM6PR04MB4774.eurprd04.prod.outlook.com (20.177.32.215) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1558.21; Tue, 29 Jan 2019 08:09:26 +0000 Received: from AM6PR04MB5781.eurprd04.prod.outlook.com ([fe80::9c0:e3aa:b41f:9504]) by AM6PR04MB5781.eurprd04.prod.outlook.com ([fe80::9c0:e3aa:b41f:9504%3]) with mapi id 15.20.1558.023; Tue, 29 Jan 2019 08:09:26 +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" , "mark.rutland@arm.com" , "l.subrahmanya@mobiveil.co.in" , "shawnguo@kernel.org" , Leo Li , "lorenzo.pieralisi@arm.com" , "catalin.marinas@arm.com" , "will.deacon@arm.com" CC: Mingkai Hu , "M.h. Lian" , Xiaowei Bao , "Z.q. Hou" Subject: [PATCHv3 09/27] PCI: mobiveil: correct inbound/outbound window setup routines Thread-Topic: [PATCHv3 09/27] PCI: mobiveil: correct inbound/outbound window setup routines Thread-Index: AQHUt6nzj33tdIACb0S6/SobpMFmRg== Date: Tue, 29 Jan 2019 08:09:25 +0000 Message-ID: <20190129080926.36773-10-Zhiqiang.Hou@nxp.com> References: <20190129080926.36773-1-Zhiqiang.Hou@nxp.com> In-Reply-To: <20190129080926.36773-1-Zhiqiang.Hou@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HK0PR04CA0008.apcprd04.prod.outlook.com (2603:1096:203:36::20) To AM6PR04MB5781.eurprd04.prod.outlook.com (2603:10a6:20b:ad::19) 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-microsoft-exchange-diagnostics: 1;AM6PR04MB4774;6:i9hHvpx+0roaQ2C+1hCIYSsAp+v4J9I8J/ZpAnEPIZGHGL3w4oAfSdeGHtJBhOFAbX5DBcSk/iAq8FakMXCHF5zKo/vw6hRFXA19mtFzAzzO/kvoToOFZuLAgjDkxHzfy/pTB05ZD/u7ZiumBaACk5ihvat2Sj/HrKBmIFd0aTAMdnCj2vNRN+wWBwtNADdKRi3Su40VFhYmDV6YSnFK9Twe/g4FJWx6Y4RzcO1UyoNEN0owAWVI4dpYcGYvmuKmPohUyyyVGgHd3af96fs12INzRqkV35dJL4pRE/zLfviVsb+6gT086ezT9mpQHnsurkJN/G4wq2a60riKf6+zIf7tBC9I5VzmwCXToajbjRGJbOQasY3t4JDBEAYNw7qXqN3tcFNhzno8ZwMeJux1DrKmyjkftD5PkUKzdcCQ3ix9TVq3ZpgXw8qiETKyQQzof4kwXGJKF8XiNAt8jxg74g==;5:EjxQDR7WRqT0JJc03i6rYuh/ieYiKIDYBOBo35eF+WXc9R0KAVg1m7aF0UZ0m8M0zUG3gaNIteZ0FYHiKnOSobiLUuuRKoJ/4JiV9h0DKL4wAtzLYPHOSIiPQtC+tHV/wvWxGr0Ls2Yu2KazWYEVuJjw81kHEa5DZLWXwXSYhMaruFGKzTTFgwDlNHS4fYrwo8Zy2agN5ee0qHyLeH591A==;7:VyHzhMwl+irUCRwFxNviUjY8sbeXBGw33oVnHRpYCGCDoE9RrRE/HwaMPR4QKoWpRjqhRICo1Sqb0KZI/jkKZeCTZXbbrWBVNh7emF5KsCFSo0VqeIgTY5+lGZgKWLEbSKuLdjVLGNBB8Ldf+SB2VQ== x-ms-office365-filtering-correlation-id: ddee93d1-2fda-4e3e-c40c-08d685c11592 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600110)(711020)(4605077)(4618075)(2017052603328)(7153060)(7193020);SRVR:AM6PR04MB4774; x-ms-traffictypediagnostic: AM6PR04MB4774: x-microsoft-antispam-prvs: x-forefront-prvs: 093290AD39 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(346002)(366004)(376002)(396003)(136003)(39860400002)(189003)(199004)(86362001)(2201001)(102836004)(4326008)(305945005)(186003)(478600001)(26005)(7736002)(386003)(76176011)(71200400001)(14454004)(25786009)(6506007)(446003)(53936002)(71190400001)(52116002)(1076003)(256004)(11346002)(7416002)(68736007)(81166006)(81156014)(8936002)(316002)(486006)(6436002)(2616005)(8676002)(110136005)(54906003)(3846002)(2501003)(6116002)(99286004)(2906002)(476003)(105586002)(97736004)(36756003)(50226002)(66066001)(6512007)(106356001)(6486002)(921003)(1121003);DIR:OUT;SFP:1101;SCL:1;SRVR:AM6PR04MB4774;H:AM6PR04MB5781.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-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: zU2qgR6ICuAAKFNazoagRWWxCBh1Qy4XXWHCtagh1USVQMro93iu4c/GeKbDfCWtHDzlrwKixEnLhoO/D7sBzhThieiI2p7rqzs8FnTEKBnBQAkNP2uGEUPu0HdidcANoyNfDbjEXU7f8ZfgPbbkbxShaKvel5WVdPE5+lDIV4bSPXQNmzCb8qRr/gyO85B4CHLnVhyO4FKnFUgCcoMDgyxAZgymqDWwChv+Ugq7teGsbF7sDCN/u54c7UZBTrLkAYJ3iZ5Bmdda6Ube4R67bSx6k4L1HH3S083wjyPwTJVv8bJG9knHQTEP2thOcF/nj7RCbG2kkZkd2uqKMnncQJf8KhN3hggv7kP9Vpz07eFQt3OWmzFxgYq6m216mkdtbd8tVfBJyVqNXj0hCvpFkqyRsfsxsm4LMhZwT9sfdpE= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: ddee93d1-2fda-4e3e-c40c-08d685c11592 X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jan 2019 08:09:20.0531 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR04MB4774 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hou Zhiqiang Outbound window routine: - Removed unused var definition and register read operations. - Added the upper 32-bit cpu address setup of the window. - Instead of blindly write, only change the fields specified. - Masked the lower bits of window size in case override the control bits. - Check if the passing window number is available, instead of the total number of the initialized windows. Inbound window routine: - Added parameter 'u64 cpu_addr' to specify the cpu address of the window instead of using 'pci_addr'. - Changed 'int pci_addr' to 'u64 pci_addr', and added setup of the upper 32-bit pci address of the window. - Moved the PCIe PIO master enablement to mobiveil_host_init(). - Instead of blindly write, only change the fields specified. - Masked the lower bits of window size in case override the control bits. - Check if the passing window number is available, instead of the total number of the initialized windows. - And added the statistic of initialized inbound windows. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang Reviewed-by: Minghuan Lian Reviewed-by: Subrahmanya Lingappa --- V3: - No change drivers/pci/controller/pcie-mobiveil.c | 70 +++++++++++++++----------- 1 file changed, 42 insertions(+), 28 deletions(-) diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index e88afc792a5c..4ba458474e42 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -65,9 +65,13 @@ #define PAB_AXI_AMAP_CTRL(win) PAB_REG_ADDR(0x0ba0, win) #define WIN_ENABLE_SHIFT 0 #define WIN_TYPE_SHIFT 1 +#define WIN_TYPE_MASK 0x3 +#define WIN_SIZE_SHIFT 10 +#define WIN_SIZE_MASK 0x3fffff #define PAB_EXT_AXI_AMAP_SIZE(win) PAB_EXT_REG_ADDR(0xbaf0, win) +#define PAB_EXT_AXI_AMAP_AXI_WIN(win) PAB_EXT_REG_ADDR(0x80a0, win) #define PAB_AXI_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x0ba4, win) #define AXI_WINDOW_ALIGN_MASK 3 @@ -82,8 +86,10 @@ #define PAB_PEX_AMAP_CTRL(win) PAB_REG_ADDR(0x4ba0, win) #define AMAP_CTRL_EN_SHIFT 0 #define AMAP_CTRL_TYPE_SHIFT 1 +#define AMAP_CTRL_TYPE_MASK 3 #define PAB_EXT_PEX_AMAP_SIZEN(win) PAB_EXT_REG_ADDR(0xbef0, win) +#define PAB_EXT_PEX_AMAP_AXI_WIN(win) PAB_EXT_REG_ADDR(0xb4a0, win) #define PAB_PEX_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x4ba4, win) #define PAB_PEX_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x4ba8, win) #define PAB_PEX_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x4bac, win) @@ -455,49 +461,51 @@ static int mobiveil_pcie_parse_dt(struct mobiveil_pcie *pcie) } static void program_ib_windows(struct mobiveil_pcie *pcie, int win_num, - int pci_addr, u32 type, u64 size) + u64 cpu_addr, u64 pci_addr, u32 type, u64 size) { - int pio_ctrl_val; - int amap_ctrl_dw; + u32 value; u64 size64 = ~(size - 1); - if ((pcie->ib_wins_configured + 1) > pcie->ppio_wins) { + if (win_num >= pcie->ppio_wins) { dev_err(&pcie->pdev->dev, "ERROR: max inbound windows reached !\n"); return; } - pio_ctrl_val = csr_readl(pcie, PAB_PEX_PIO_CTRL); - pio_ctrl_val |= 1 << PIO_ENABLE_SHIFT; - csr_writel(pcie, pio_ctrl_val, PAB_PEX_PIO_CTRL); - - amap_ctrl_dw = csr_readl(pcie, PAB_PEX_AMAP_CTRL(win_num)); - amap_ctrl_dw |= (type << AMAP_CTRL_TYPE_SHIFT) | - (1 << AMAP_CTRL_EN_SHIFT) | - lower_32_bits(size64); - csr_writel(pcie, amap_ctrl_dw, PAB_PEX_AMAP_CTRL(win_num)); + value = csr_readl(pcie, PAB_PEX_AMAP_CTRL(win_num)); + value &= ~(AMAP_CTRL_TYPE_MASK << AMAP_CTRL_TYPE_SHIFT | + WIN_SIZE_MASK << WIN_SIZE_SHIFT); + value |= (type << AMAP_CTRL_TYPE_SHIFT) | (1 << AMAP_CTRL_EN_SHIFT) | + (lower_32_bits(size64) & WIN_SIZE_MASK << WIN_SIZE_SHIFT); + csr_writel(pcie, value, PAB_PEX_AMAP_CTRL(win_num)); csr_writel(pcie, upper_32_bits(size64), PAB_EXT_PEX_AMAP_SIZEN(win_num)); - csr_writel(pcie, pci_addr, PAB_PEX_AMAP_AXI_WIN(win_num)); + csr_writel(pcie, lower_32_bits(cpu_addr), + PAB_PEX_AMAP_AXI_WIN(win_num)); + csr_writel(pcie, upper_32_bits(cpu_addr), + PAB_EXT_PEX_AMAP_AXI_WIN(win_num)); + + csr_writel(pcie, lower_32_bits(pci_addr), + PAB_PEX_AMAP_PEX_WIN_L(win_num)); + csr_writel(pcie, upper_32_bits(pci_addr), + PAB_PEX_AMAP_PEX_WIN_H(win_num)); - csr_writel(pcie, pci_addr, PAB_PEX_AMAP_PEX_WIN_L(win_num)); - csr_writel(pcie, 0, PAB_PEX_AMAP_PEX_WIN_H(win_num)); + pcie->ib_wins_configured++; } /* * routine to program the outbound windows */ static void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, - u64 cpu_addr, u64 pci_addr, - u32 config_io_bit, u64 size) + u64 cpu_addr, u64 pci_addr, u32 type, u64 size) { - u32 value, type; + u32 value; u64 size64 = ~(size - 1); - if ((pcie->ob_wins_configured + 1) > pcie->apio_wins) { + if (win_num >= pcie->apio_wins) { dev_err(&pcie->pdev->dev, "ERROR: max outbound windows reached !\n"); return; @@ -507,10 +515,12 @@ static void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, * program Enable Bit to 1, Type Bit to (00) base 2, AXI Window Size Bit * to 4 KB in PAB_AXI_AMAP_CTRL register */ - type = config_io_bit; value = csr_readl(pcie, PAB_AXI_AMAP_CTRL(win_num)); - csr_writel(pcie, 1 << WIN_ENABLE_SHIFT | type << WIN_TYPE_SHIFT | - lower_32_bits(size64), PAB_AXI_AMAP_CTRL(win_num)); + value &= ~(WIN_TYPE_MASK << WIN_TYPE_SHIFT | + WIN_SIZE_MASK << WIN_SIZE_SHIFT); + value |= 1 << WIN_ENABLE_SHIFT | type << WIN_TYPE_SHIFT | + (lower_32_bits(size64) & WIN_SIZE_MASK << WIN_SIZE_SHIFT); + csr_writel(pcie, value, PAB_AXI_AMAP_CTRL(win_num)); csr_writel(pcie, upper_32_bits(size64), PAB_EXT_AXI_AMAP_SIZE(win_num)); @@ -518,11 +528,10 @@ static void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, * program AXI window base with appropriate value in * PAB_AXI_AMAP_AXI_WIN0 register */ - value = csr_readl(pcie, PAB_AXI_AMAP_AXI_WIN(win_num)); - csr_writel(pcie, cpu_addr & (~AXI_WINDOW_ALIGN_MASK), + csr_writel(pcie, lower_32_bits(cpu_addr) & (~AXI_WINDOW_ALIGN_MASK), PAB_AXI_AMAP_AXI_WIN(win_num)); - - value = csr_readl(pcie, PAB_AXI_AMAP_PEX_WIN_H(win_num)); + csr_writel(pcie, upper_32_bits(cpu_addr), + PAB_EXT_AXI_AMAP_AXI_WIN(win_num)); csr_writel(pcie, lower_32_bits(pci_addr), PAB_AXI_AMAP_PEX_WIN_L(win_num)); @@ -604,6 +613,11 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie) value |= APIO_EN_MASK; csr_writel(pcie, value, PAB_AXI_PIO_CTRL); + /* Enable PCIe PIO master */ + value = csr_readl(pcie, PAB_PEX_PIO_CTRL); + value |= 1 << PIO_ENABLE_SHIFT; + csr_writel(pcie, value, PAB_PEX_PIO_CTRL); + /* * we'll program one outbound window for config reads and * another default inbound window for all the upstream traffic @@ -616,7 +630,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie) CFG_WINDOW_TYPE, resource_size(pcie->ob_io_res)); /* memory inbound translation window */ - program_ib_windows(pcie, WIN_NUM_0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE); + program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE); /* Get the I/O and memory ranges from DT */ resource_list_for_each_entry(win, &pcie->resources) {