From patchwork Thu Oct 5 16:40:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Havalige, Thippeswamy" X-Patchwork-Id: 13410440 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 53066E9270D for ; Thu, 5 Oct 2023 16:42:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=f0BNBU4h0ydqud55vy2YGb+Jo46hn2cMLOnue/xe4og=; b=Ul69a35diDcXn5 3BQplbX5Y+zrGzjOZviQsNz11IbTec47bXEX7VNkefw6CUscvSCzrFQDNZ9vPhyxlVKvNK+t+e6D1 Y/T5pwHhyW6pBLlOQs6HKTFU3T8zNpPtbqcloAd5pLhVbDsTipAdZh1L911wLYl9N97BMOeiM2g3V lYpnNO/J7piCyWSDSQ6GyDozWM6iBzsowhG7+Gl8FQyMeb6cVL2KFOFQ2XaRUMvTekZeGeCNNNKpb u0+HFWVgxP86cwATwN3D+X5UPrWle1yqcIPGw3J5HsztQ/xP0MW/t3Ur6Rdj+uUq78tROJGvyO6GA Vih1tyBa7oSm8j1eoa1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qoRQR-0046S8-0e; Thu, 05 Oct 2023 16:42:11 +0000 Received: from mail-mw2nam10on20614.outbound.protection.outlook.com ([2a01:111:f400:7e89::614] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qoRQN-0046Oq-2D for linux-arm-kernel@lists.infradead.org; Thu, 05 Oct 2023 16:42:09 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=F/NAQjqbjT4btflA0tr2Q2bzZwPUjAI4Xsz6GIDYvARWW31iK37L2OOWUKJHliont+DPDlDgHEEx/DpSUdmCTFiUCrhOfstnbfed6GqhTNTUqFb8a6H5BEEmspJdxucAAy5uKIxAzhHm4hVCruY3aKnADsydzPGoT6a+lFDafbtudgeTH4+xUANHqYWGCeKh3DnCs4CxA1ZiX8ACdbFnWtIW9VNssWeH6WTnuDA2AGAQP9r0JXhOPp3LvlQQHjZ9le1RwKswIB4hOqzJ2wkabrZeoT3wiBwxXbKNnZFCpX2VLbWH9t8e+xLTPnHhnlVHcRHUV27jIZwvjRYJFr2NIw== 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-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=L3ilyPbCZMc9D4qzJENbNGKw8ecAZQwX+PvbXf06TO8=; b=HrSmcsT8VgzbB0Xuh6sYOfiXLaboswaLeu5AKUvGMERJogRTFgdHoAXmGW1zruwev6ojkAvxyoNJ2ERg88LV3iByGSV3UI3It5ZB4ZVt6om6W+J/hwhiVpgIrEAkJqBY1FHLpRk8N58V/VVXPUHpH4OQ8dpWejbDKuJgiE1zAd3yZk9vEeBHe/9S6uChf5ZN0ZI4g15YqLlXPePrMmPwnXD1rLXEpZkfzZHZ1sdbdm0ZJmLZj1eYW4q+bd7rsP5m48pl+Wf+TisQFtGGd5rGC/vpKgR2SDaPkQDS9UVKqZCE7DetOBSX8IkMFyMmtB1ZKwj4FpEwX07tvhWGEE5lyA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=L3ilyPbCZMc9D4qzJENbNGKw8ecAZQwX+PvbXf06TO8=; b=TY3uql6Xr/Di9Djs4gkDTOUDQDQRxujZbEIhAtHcsMPkckrLb+1DLYE0XlGV5LC428r0SrcY4BXyTsx3BtWWSrXk/bE/SCFcYC6hdF5IbXKulZvgShdBDCTdNIwwNrEw3j6BLNXbWxQfis/5A3cerS/0G4ae9KYI4Z775E1Fz/A= Received: from DS7PR05CA0022.namprd05.prod.outlook.com (2603:10b6:5:3b9::27) by SJ2PR12MB8159.namprd12.prod.outlook.com (2603:10b6:a03:4f9::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6838.25; Thu, 5 Oct 2023 16:41:56 +0000 Received: from DS3PEPF000099D8.namprd04.prod.outlook.com (2603:10b6:5:3b9:cafe::dc) by DS7PR05CA0022.outlook.office365.com (2603:10b6:5:3b9::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6863.29 via Frontend Transport; Thu, 5 Oct 2023 16:41:56 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by DS3PEPF000099D8.mail.protection.outlook.com (10.167.17.9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6838.14 via Frontend Transport; Thu, 5 Oct 2023 16:41:56 +0000 Received: from SATLEXMB08.amd.com (10.181.40.132) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Thu, 5 Oct 2023 11:41:56 -0500 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB08.amd.com (10.181.40.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Thu, 5 Oct 2023 09:41:55 -0700 Received: from xhdthippesw40.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.27 via Frontend Transport; Thu, 5 Oct 2023 11:41:52 -0500 From: Thippeswamy Havalige To: , , , CC: , , , , , , , , Thippeswamy Havalige Subject: [PATCH v5 RESEND 1/4] PCI: xilinx-nwl: Remove unnecessary code which updates primary, secondary and sub-ordinate bus numbers Date: Thu, 5 Oct 2023 22:10:48 +0530 Message-ID: <20231005164051.984254-2-thippeswamy.havalige@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231005164051.984254-1-thippeswamy.havalige@amd.com> References: <20231005164051.984254-1-thippeswamy.havalige@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF000099D8:EE_|SJ2PR12MB8159:EE_ X-MS-Office365-Filtering-Correlation-Id: f1062870-38cb-40be-5cbd-08dbc5c1fd0c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(396003)(136003)(39860400002)(346002)(376002)(230922051799003)(1800799009)(451199024)(186009)(82310400011)(64100799003)(46966006)(40470700004)(36840700001)(356005)(6666004)(82740400003)(81166007)(40480700001)(26005)(2616005)(336012)(426003)(44832011)(70586007)(316002)(8936002)(2906002)(41300700001)(4326008)(1076003)(5660300002)(86362001)(15650500001)(7416002)(70206006)(54906003)(36756003)(8676002)(110136005)(478600001)(47076005)(40460700003)(36860700001)(83380400001)(36900700001)(2101003);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Oct 2023 16:41:56.7081 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f1062870-38cb-40be-5cbd-08dbc5c1fd0c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF000099D8.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8159 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231005_094207_760602_24BD40F7 X-CRM114-Status: GOOD ( 14.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The primary,secondary and sub-ordinate bus number registers are updated by Linux PCI core, so remove code which updates respective fields of type 1 header. Signed-off-by: Thippeswamy Havalige --- changes in v5: - None changes in v4: - None changes in v3: - Remove unnecessary period at end of subject line. - Updated commit message. changes in v2: - Code increasing ECAM Size value is added into a seperate patch. - Modified commit messages. changes in v1: - Modified commit messages. --- drivers/pci/controller/pcie-xilinx-nwl.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/pci/controller/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c index 176686bdb15c..d8a3a08be1d5 100644 --- a/drivers/pci/controller/pcie-xilinx-nwl.c +++ b/drivers/pci/controller/pcie-xilinx-nwl.c @@ -166,7 +166,6 @@ struct nwl_pcie { int irq_intx; int irq_misc; u32 ecam_value; - u8 last_busno; struct nwl_msi msi; struct irq_domain *legacy_irq_domain; struct clk *clk; @@ -625,7 +624,7 @@ static int nwl_pcie_bridge_init(struct nwl_pcie *pcie) { struct device *dev = pcie->dev; struct platform_device *pdev = to_platform_device(dev); - u32 breg_val, ecam_val, first_busno = 0; + u32 breg_val, ecam_val; int err; breg_val = nwl_bridge_readl(pcie, E_BREG_CAPABILITIES) & BREG_PRESENT; @@ -683,15 +682,6 @@ static int nwl_pcie_bridge_init(struct nwl_pcie *pcie) nwl_bridge_writel(pcie, upper_32_bits(pcie->phys_ecam_base), E_ECAM_BASE_HI); - /* Get bus range */ - ecam_val = nwl_bridge_readl(pcie, E_ECAM_CONTROL); - pcie->last_busno = (ecam_val & E_ECAM_SIZE_LOC) >> E_ECAM_SIZE_SHIFT; - /* Write primary, secondary and subordinate bus numbers */ - ecam_val = first_busno; - ecam_val |= (first_busno + 1) << 8; - ecam_val |= (pcie->last_busno << E_ECAM_SIZE_SHIFT); - writel(ecam_val, (pcie->ecam_base + PCI_PRIMARY_BUS)); - if (nwl_pcie_link_up(pcie)) dev_info(dev, "Link is UP\n"); else