From patchwork Thu Jan 7 09:11:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Z.Q. Hou" X-Patchwork-Id: 12003273 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6F47C433E9 for ; Thu, 7 Jan 2021 09:03:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD28A23142 for ; Thu, 7 Jan 2021 09:03:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727448AbhAGJDg (ORCPT ); Thu, 7 Jan 2021 04:03:36 -0500 Received: from mail-eopbgr00075.outbound.protection.outlook.com ([40.107.0.75]:48622 "EHLO EUR02-AM5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726992AbhAGJDe (ORCPT ); Thu, 7 Jan 2021 04:03:34 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QqVfACrXxsjhnzn8umIG6Mmus+pkR211/m//d7Qk+n/VO3rw25jyhKtcZerojGLjsHWROl+YYPKAZxGSJ+82lA63wld8j1Ihoy/xU8q+DW677LKjf3vNId7cFV9ZsfnbSc/emrfV+SSZizTLrB7z3KNx1t/KDXioMPy6IeZs6vL+cC/p755Cjx20f8V3yxLMMv9yCNbbZZUsK6fpXanMyT9V6zjwz1JEcy3cXdO6ijYIGHCixdHr3Fz5wRwIdun6g2GnSdN+OmHz7/sLBEqadCgev+ac/PscZrXTAYrUL2t7wuiH6oYIXxrSjADxb8Z3DH4zjlK21mUKvJgcNaQGRA== 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=njWXmtWIYlqC6XrTHOvke4uyaMFHp9xiOMLNny1pViM=; b=RAjfH//xZaa3hZuNEzc2yCG3YXN5Ax+iYZKAcQn1AIOC4sj82e11gRn/NjRzUcwcyxqFRBXfm3nLtYMetgNHmwnMtmdKUCcVTwOYpSIGBL5p1EF7ZvjAfTtQ/VaHhe57K3XZBpbwLT3/0hjfRDwSDE+1BkBLDV7o8ZZN2hywLucV1ZvXlwB1SQmf8EWqc3p1bQDsuUwqjXBQ1jFsgS8RwPas5Kk5ouO8ImUaWm8FUUm1o6rgwNm7RR4pjcNkEnNi2YmM8qApepCsH5L8RNQb+ClVjulNgYaeIHCrkEHVXN1OKs5P9sMtcNAKODlgRe82GA6ICt7oeSl/pV4d8j41Fg== 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=njWXmtWIYlqC6XrTHOvke4uyaMFHp9xiOMLNny1pViM=; b=AB2jHIGx3sQ9DsOFCjd9f+9ylbRrZH3rhJxT+cPq+8nObMiMpuVapM/rh0QJluHyCZ/K4MgBUxjtI1e/CnSxJbkbnEfxPjXalgFKwGjMnIhkeIJoDf5VhLGZxolCRiIBA8pYAnz8omzL6xE0N/pZgMETHlEeG8iNo8tm/G4ZfqI= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=nxp.com; Received: from HE1PR0402MB3371.eurprd04.prod.outlook.com (2603:10a6:7:85::27) by HE1PR0402MB2731.eurprd04.prod.outlook.com (2603:10a6:3:d7::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3742.6; Thu, 7 Jan 2021 09:02:42 +0000 Received: from HE1PR0402MB3371.eurprd04.prod.outlook.com ([fe80::3194:64d6:5a70:a91d]) by HE1PR0402MB3371.eurprd04.prod.outlook.com ([fe80::3194:64d6:5a70:a91d%4]) with mapi id 15.20.3721.024; Thu, 7 Jan 2021 09:02:42 +0000 From: Zhiqiang Hou To: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@axis.com, lorenzo.pieralisi@arm.com, robh@kernel.org, bhelgaas@google.com Cc: kishon@ti.com, minghuan.Lian@nxp.com, jesper.nilsson@axis.com, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, hayashi.kunihiko@socionext.com, Hou Zhiqiang Subject: [PATCH 1/4] PCI: dwc: Change to use an array to store the structure of functions Date: Thu, 7 Jan 2021 17:11:20 +0800 Message-Id: <20210107091123.8616-2-Zhiqiang.Hou@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210107091123.8616-1-Zhiqiang.Hou@nxp.com> References: <20210107091123.8616-1-Zhiqiang.Hou@nxp.com> X-Originating-IP: [119.31.174.73] X-ClientProxiedBy: SG2PR06CA0085.apcprd06.prod.outlook.com (2603:1096:3:14::11) To HE1PR0402MB3371.eurprd04.prod.outlook.com (2603:10a6:7:85::27) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.73) by SG2PR06CA0085.apcprd06.prod.outlook.com (2603:1096:3:14::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3742.6 via Frontend Transport; Thu, 7 Jan 2021 09:02:37 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 288821b6-242d-48ec-9eca-08d8b2eafe14 X-MS-TrafficTypeDiagnostic: HE1PR0402MB2731: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 7Zm9cG2xHegqcGL3LztZZCLl4MAutESxNmLPwZW+wnnwJgqwVTVhLRG7yE+aGSpuwoeHxcVZGkvzSAPrLBiA7/hHXZRozp7pCrZysEdvbA4fj3HJUMEJfE9+1skRsXJ14vyS2wMWsYl+T1mbkkcc9nfsaDgqudDPJC5K77PIwyB7Uq171je7ld+BZYe+JqQ52FWoePXWByvXMerOr4XQNuTQYfAXBX9P6ly8q/Nfp46XPluFvY9VjjaFfoTk0nwhS/MlOtmwf3iwjK0FaZFymSXeZBBkoHNJOsqhF5ZlrHD817KSoPtdwhPa8S8uiaGRfhFrEhOAaK8QkiwHwOQkfzlOO7OSghKxueFPlWUhS76jn0p+04yICanpIT36eYa9BZwuCFmVshFNrRzshEMnIo8qbIveCweYDNHlbF2xhGhmlTigXKolyGewqQMtGdfg X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:HE1PR0402MB3371.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(136003)(39860400002)(366004)(376002)(396003)(346002)(2616005)(66946007)(16526019)(66476007)(66556008)(186003)(52116002)(86362001)(69590400011)(478600001)(956004)(7416002)(2906002)(26005)(8676002)(316002)(6486002)(8936002)(4326008)(6506007)(6666004)(1076003)(83380400001)(5660300002)(6512007)(36756003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthSource: HE1PR0402MB3371.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jan 2021 09:02:42.6591 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-Network-Message-Id: 288821b6-242d-48ec-9eca-08d8b2eafe14 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: w0shk5+4n2/fOszcTICdk28rxgJL6jk5TyErWiOP8EdFL+2IxmJK94OmBBNgVUdv9AoQ6Yv6zrASK1zQNZJyGg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0402MB2731 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Hou Zhiqiang As there isn't dynamically adding and deleting a function's structure, the list_head is not necessary for this case. Array is easier and more efficient to search. Signed-off-by: Hou Zhiqiang --- .../pci/controller/dwc/pcie-designware-ep.c | 33 ++++++++----------- drivers/pci/controller/dwc/pcie-designware.h | 3 +- 2 files changed, 15 insertions(+), 21 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index bcd1cd9ba8c8..e583700b5ba3 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -34,12 +34,8 @@ EXPORT_SYMBOL_GPL(dw_pcie_ep_init_notify); struct dw_pcie_ep_func * dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no) { - struct dw_pcie_ep_func *ep_func; - - list_for_each_entry(ep_func, &ep->func_list, list) { - if (ep_func->func_no == func_no) - return ep_func; - } + if (func_no < ep->epc->max_functions) + return ep->funcs + func_no; return NULL; } @@ -675,9 +671,9 @@ EXPORT_SYMBOL_GPL(dw_pcie_ep_init_complete); int dw_pcie_ep_init(struct dw_pcie_ep *ep) { + u8 i; int ret; void *addr; - u8 func_no; struct resource *res; struct pci_epc *epc; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); @@ -685,9 +681,7 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) struct platform_device *pdev = to_platform_device(dev); struct device_node *np = dev->of_node; const struct pci_epc_features *epc_features; - struct dw_pcie_ep_func *ep_func; - - INIT_LIST_HEAD(&ep->func_list); + struct dw_pcie_ep_func *funcs; if (!pci->dbi_base) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi"); @@ -750,18 +744,19 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) if (ret < 0) epc->max_functions = 1; - for (func_no = 0; func_no < epc->max_functions; func_no++) { - ep_func = devm_kzalloc(dev, sizeof(*ep_func), GFP_KERNEL); - if (!ep_func) - return -ENOMEM; + funcs = devm_kcalloc(dev, epc->max_functions, sizeof(*funcs), + GFP_KERNEL); + if (!funcs) + return -ENOMEM; + + ep->funcs = funcs; - ep_func->func_no = func_no; - ep_func->msi_cap = dw_pcie_ep_find_capability(ep, func_no, + for (i = 0; i < epc->max_functions; i++) { + funcs[i].func_no = i; + funcs[i].msi_cap = dw_pcie_ep_find_capability(ep, i, PCI_CAP_ID_MSI); - ep_func->msix_cap = dw_pcie_ep_find_capability(ep, func_no, + funcs[i].msix_cap = dw_pcie_ep_find_capability(ep, i, PCI_CAP_ID_MSIX); - - list_add_tail(&ep_func->list, &ep->func_list); } if (ep->ops->ep_init) diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 98710bf5ab0e..16d239c4d09b 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -221,7 +221,6 @@ struct dw_pcie_ep_ops { }; struct dw_pcie_ep_func { - struct list_head list; u8 func_no; u8 msi_cap; /* MSI capability offset */ u8 msix_cap; /* MSI-X capability offset */ @@ -229,7 +228,7 @@ struct dw_pcie_ep_func { struct dw_pcie_ep { struct pci_epc *epc; - struct list_head func_list; + struct dw_pcie_ep_func *funcs; const struct dw_pcie_ep_ops *ops; phys_addr_t phys_base; size_t addr_size;