From nobody Tue Feb 10 07:38:56 2026 Received: from EUR05-VI1-obe.outbound.protection.outlook.com (mail-vi1eur05on2080.outbound.protection.outlook.com [40.107.21.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 289852561A2; Mon, 7 Apr 2025 19:52:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.21.80 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744055526; cv=fail; b=QvMzVqmh4tF/SGW5/Tb5wf0SOsw3zs8u5fcvusvsPrvVTzVUcyvYqZLBPfWumlVF740NwciPzid7ozpdHpNZaKrhTCXroXCm6emgohiQzdG8K//cl+wWSET5O8DY9C8cp5LnqPcNng0JSvMggIf2wj3r8QH4a/vDw7cBgIqW+io= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744055526; c=relaxed/simple; bh=Mp2cXn9FsMWsG/hvucQeIBBPPQdjWFLzH+Ukbq7aPzU=; h=From:Date:Subject:Content-Type:Message-Id:References:In-Reply-To: To:Cc:MIME-Version; b=rLA2R85qtatc9Yeba0WZcK0CPUmGbLu2tYdTtyFy9YlJ+Bj6TWS0MCoqt4EUScMO2sEmJKbuBw1wBlwcpFYn5ePWg1IABvQDGNSX4TInlW0gu4l6llbzqP6RjJvqlztnTlU7quTfDmJkx+u2WexeLsNSLkXNQahM54tCis2lZOg= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=cHQ+Kjx5; arc=fail smtp.client-ip=40.107.21.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="cHQ+Kjx5" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=advJ3Yt4aIL43uXKbCX7tf9efx+fMZdo9UJ0KEVNDqZwUl7g9lmWfen3yTqFHHlWBlE1AvcS5d4Xa0NNz2fUGaGnmbeiazLAcjJZdU4Jbq9XcjDdhvU0ZrhwQf0bK5zTHxXte48jVTPde82L7bDn/nmPiie64YmItkrBZU61eO2v4xNEhvprVROwpQKGHG/Iz7F11QjDBZe1FX+B6sDAOiH7iQJfTk1tGlEajzqdBC3YTluXwfsOp6PckyvmN4BebGh2P4StC3tdSH1vCGuA8gx9cxepaRdK9XOey7ksPEBeW/eRls24Pi8zfdFq8X9IP621iqVFl6wUm868bt0qAg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=u+qwraQmG61cZxMtmXO5VrRkCys/e7X2Bx0RuL0d/hk=; b=cDTzUP7CwAnCIPv/7OsFKYWt29fFa+mMTP79GX6j5uqctvx5+Bc6kwzAJxs9T0PC6tqigJgOaLPQHfj4Ov1uG2CsYVllTnwTqvSKnD/RAaRzecManOaRe2v53lcPhUdUZcPOmLS0vPrsnXqIPv4ukTiRdUoiJ++WhbG9HlS957nFOma9PASM43jF+6rX8COqhfkkzw3wRPUrFINVs0Cx0ZQl+bdlTWDNIwWEViLtY5TVxhDsWvt3rZ9APRrQUCrB6UYuOwMTDlO1bdjmSYav6y4kV6ce4vHGSMQGq1jR9KbAJ5raJV16SkDk30CkpvKUPUsKA7cCqch5AE5ZBeWqSg== 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=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=u+qwraQmG61cZxMtmXO5VrRkCys/e7X2Bx0RuL0d/hk=; b=cHQ+Kjx5xgcsntn83ZBrKhVchIaok/IcdZmqb8BsL26uDtc5tz8PYhcHTLqXssd/2eLBxCMUuOs4E6/5x7YyKv4Iqv+2fOmwM/sBedjG69yHP8Z4s6Rc+7tmIL1WBxJeMQYUMsRXQpA4Eqcj1X2AFnQkQR2vlYaiYZxYpFRSCbpz0cOseyfhW6Vt83Z4ERqE4QEgY3FugyLnD5golgAII4HgWspRasbOfmLgAs8cT9MmWbsW/r9VPCNZL556U084/874d4XD/qJM+gFXjtVLoqDPOaXEq7pMOBqNHZS5PAI2v7LrPnVrsCGPXtPnmBd5sii2mHqBNFl4Pu/M/3pHvw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by PR3PR04MB7452.eurprd04.prod.outlook.com (2603:10a6:102:80::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8606.34; Mon, 7 Apr 2025 19:52:01 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::9126:a61e:341d:4b06]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::9126:a61e:341d:4b06%2]) with mapi id 15.20.8606.029; Mon, 7 Apr 2025 19:52:01 +0000 From: Frank Li Date: Mon, 07 Apr 2025 15:50:59 -0400 Subject: [PATCH v17 09/15] PCI: endpoint: Add pci_epf_align_inbound_addr() helper for address alignment Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250407-ep-msi-v17-9-633ab45a31d0@nxp.com> References: <20250407-ep-msi-v17-0-633ab45a31d0@nxp.com> In-Reply-To: <20250407-ep-msi-v17-0-633ab45a31d0@nxp.com> To: Kishon Vijay Abraham I , "Rafael J. Wysocki" , Thomas Gleixner , Anup Patel , Kishon Vijay Abraham I , Marc Zyngier , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Manivannan Sadhasivam , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Bjorn Helgaas , Arnd Bergmann , Shuah Khan , Richard Zhu , Lucas Stach , Lorenzo Pieralisi , Rob Herring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Krzysztof Kozlowski , Conor Dooley Cc: Niklas Cassel , dlemoal@kernel.org, jdmason@kudzu.us, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kselftest@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org, Frank Li X-Mailer: b4 0.13-dev-e586c X-Developer-Signature: v=1; a=ed25519-sha256; t=1744055468; l=4364; i=Frank.Li@nxp.com; s=20240130; h=from:subject:message-id; bh=Mp2cXn9FsMWsG/hvucQeIBBPPQdjWFLzH+Ukbq7aPzU=; b=bu7W0Gd7iqvfen6lNHjsKxdp4mp6yDtX2bwdge7ROfaPPW3yvQyRvV0mGPIi04ZeV+9fRgK0Q eSIsYrSQT8vDiX6Mgvl4YU3pnHhzoGuo8obByiuVlODe8X8CtMmjymt X-Developer-Key: i=Frank.Li@nxp.com; a=ed25519; pk=I0L1sDUfPxpAkRvPKy7MdauTuSENRq+DnA+G4qcS94Q= X-ClientProxiedBy: AS4P189CA0041.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:5dd::15) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|PR3PR04MB7452:EE_ X-MS-Office365-Filtering-Correlation-Id: 078c17ba-dc83-469d-6514-08dd760da9e2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|52116014|366016|1800799024|38350700014|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?B?TWdwazQrU05GUElMeDAybEZoQlJFTEhLNUlwOTh2ZDR1WEo4RHFSVHJ3VVpB?= =?utf-8?B?RUJCMlFFYmZzenUwNExPdjY5OXVVZ1RRWmszdkRmaFJQZFFXTkY2MTRaL283?= =?utf-8?B?T25qQ3IvOUV5WjhmbDRrUkdRV3J1a3htMXdvc0ExS1BLYjlhVys2RXVuVksy?= =?utf-8?B?VUQ2bTlnMk1VR3B3WW9rSjZybVVvOTUreGw0bmcxL01JbjBxaFZBNUJSaFBN?= =?utf-8?B?WnEvdXR1ajFGSTBwNC9MWmJaWjRRVlRtb3dVRWl6cmlhcVI2QzRqTWk1RVVN?= =?utf-8?B?NTVCdkt6dnFXWElGZ3o0aVpsb1hxR201YmVzaWNCNGFJclBmanZhTHltUmQy?= =?utf-8?B?UUovSC9CNmxocWdtNzNibFJVcEZCaEV2OVczdDN1ZURlM0tHcHJvVllycDdr?= =?utf-8?B?c0ZwU2d4NUY2aWErT0dhNVZ1UnhNQVF0Z25DOStkMEZpVCsrVmNPNHk3eEhi?= =?utf-8?B?MVFVWHFBN3VLZTRXWlV0RnFHRjNPTDFYOEtDSHVNRk9LUnhWaVFYRExuN2R6?= =?utf-8?B?TlpDMnprdW93YWdXcEdVZzE2Z2k3TG5ScUVBOGsxckg2MzRHZVVFNk5VcHcv?= =?utf-8?B?bW5aUEI3Skt5S2hSQzdSaE1sUjhrTTAxREw2c0hkcGdwcHArdVd6M2tTbGho?= =?utf-8?B?UmpQczl1UEdma052ZlphZVZlUmMvZDBzMlAwUGYzZERDOFIyMnJMbk9SQVdH?= =?utf-8?B?S1ByN2lMZmJJRVdwakYzdmc3Q1pOd1lDSGdsa0FlaHBlWXVKS2F1RmZHeHdz?= =?utf-8?B?T3crR2JPb1lKQVhCb3NHTDF0bU93cmNFcUNEVlB4RFJObDhkdHlxSG9WdC90?= =?utf-8?B?akh1WnAyRi8vYmhTVU1PWVU4cXJ4MFBibTdsa1FuVVYxZXBTVTdWc1BmcjlP?= =?utf-8?B?S3JhdmRtOURSazYxMnJTQ0l0UmtUbGZydXFTdTZqSVArTTZBbUlzWmdtaGsy?= =?utf-8?B?VmpxS0ZodkhUNm54YVdldUhsUTA1azJDTXgvYU5rUXZxUmZtK3BjemhDYXdw?= =?utf-8?B?VTlHTFE3ZmZ6LzZYSnVnUldKRUxjc1F0cHo5VUoxR2pBNTRRNEp4NGhOVUlE?= =?utf-8?B?NEgxenpaWDFiM0pxOWloTWNBQ3BCdW53VjYvbzNvZUg0dDczanM2MTBqQU9k?= =?utf-8?B?WHowM016WmVOaEJsbUt5TkdPWEEvUXluT2FSc3U5ckhPN25WNlJ2VjB4ajFu?= =?utf-8?B?ZGZ4dk1LR3A0V05SUlMzWHdRY2NDcTIrV1UwWWNUZEwrR3JZMjRVWExIQW15?= =?utf-8?B?Q2hjUVBhVmtRbDNXNHNlTE9PTGJDNUxXOUVzKzRkSnRhNjZqWmcvdGVRZ25h?= =?utf-8?B?N2J5eE44T0NyN3JjTFFLbitXRmpSRnBWZWJGSVV1a3YzN1RBZ0dOaDQ3UCtk?= =?utf-8?B?OWdaYnhOWmdxdVlKTEh6TnlZM0hkVituS0F6VnE4Z1hMeXBsU1FTcUI1ek84?= =?utf-8?B?eVByZmo1TXZtaXlLbm9NRXhCd1cyd3lFeXZ0S2ZyREU5MXdmVWVEdzlYTGs2?= =?utf-8?B?ZTNhWVFkbTM1bFZFbXJGT2FIQTF5TXRoSmxjVDY0R3hVSlp3MEh2YTBHMkdt?= =?utf-8?B?MlM3S2RUWmEzM3Z5MWxrQnV6ZnUwVnZ4b3VBQk9IRDl6ZWVSbUxZb0dQcGJ6?= =?utf-8?B?U0RaSTIrYmpXa0haWW84d3J3dnJMU0pXa2FsVzNKcUtRZkFQTkcwY01JeWxM?= =?utf-8?B?VDdRcmFMeWxZbTIzQ29EY01UbXFtZENsazgwWWhlQ1QvV3dnK0h0NE5zdVdv?= =?utf-8?B?OGxDTkJLWm5lVHVHQjQ5SzE3UlF0ajZmTmJ1K29XMldad3lGWGdsM1pPU3h0?= =?utf-8?B?Z2VSMHArbUZhQ1ZIQkp4Sm02T2Z0d2FiMlNUVnJnL0pmR1NTczNNampTNVNQ?= =?utf-8?B?S1JwNHprQlpsV1IyUWVzNGdVQzBWa3ZxYlVnci95WFozd3FZUEljSTh0MjlR?= =?utf-8?B?SDRlc01mdTNMTVZ0YTVLcmRNZlZLL0R5RTZmU3BVRUU1aVozMjhRYjJ3R2ky?= =?utf-8?B?TlUzeXdPSE9nPT0=?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PAXPR04MB9642.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(7416014)(52116014)(366016)(1800799024)(38350700014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?bnE1VFNQMVpQbmo1d0xiWTd5NzVkWUtURGJzZnBERXI1UlZ6N3VMcDNMTjlZ?= =?utf-8?B?WjZMTXp5MVVBUW1VSlUyQW8xNll6cFlZNEQyQ2VoMVNZL0p1cElCVlRvNHFz?= =?utf-8?B?N3piRC9YUTlYR0hZdmUwOG1HbGF0eTU0RDBWLzRTbllyVWluMkpvTE9hNGtZ?= =?utf-8?B?N1Jnc2VrUEYwajh0Nm9nMmtSZkhTczFYeEw2T2pKYjg3MC9KcSt2OWtyS256?= =?utf-8?B?eEE2enpNRUxveTMzUWg1c1o5S1dMOXM0MndnMHN0cXNKUWlmdTRLMGR6bDFC?= =?utf-8?B?SmNsWVhzVlIxSDFFZTlycUlBbGhCdS8wM1pGNEJVcCtiMTgyMEYxSE9mbjJt?= =?utf-8?B?cVJpcUNZbUtlcEdCYURUSDdFdWQyMFdUeHBjTXFIZFQ1c3U5Z3dTWklGSXY2?= =?utf-8?B?SGVEUEdFa0I0R2ZKbk5rZDlBVFNPcTRVRGloQlVGNkZuUFlqVEhpckhwQ0VB?= =?utf-8?B?dFR1elRWZExBZUNiL0RPUWhTUW1Cbk5IQkhvRmZ3ZlFUYXVNSUh1VlpTcU1p?= =?utf-8?B?TlR5WWJhbklHd2lnbGNTUkxOZlRPMUdTRzVMb3U2U0pKRzhrdHViYTZTeW9Z?= =?utf-8?B?WGNJalVFMGdHeVdJWmlJTlZCeVpmalhnRFY3TkJJNXJRd2x0VWMyRXFFUkFz?= =?utf-8?B?Q3FwTUxEZ1dFdFUzeUxqQnYzM0tjVnY1OGJKRzd6Uk02Sy8yZGFtUzdzcTBt?= =?utf-8?B?Ym1WV3hORExrTGErNm0yUjdWMmpnaE0zd2lMbGt1OGZQcjMzenhSMVpWQlNj?= =?utf-8?B?dnc0bnRLOEdJQ3gzSGw0Nm9oR25oT3JUTjR4Y21xWGRqd1ZLSGZjdUREMEMx?= =?utf-8?B?VlEyelBpWEExbTl3MWx5V2MwSXZVTyt3aFptaEEvOUt6dnhIcTVObnFxSEt6?= =?utf-8?B?RHNqZWl2SnhrYlhzZ05NajdCNCsza0RkT25DK0F5L2lRdDhlTzJYS0JOYXdy?= =?utf-8?B?d2JNSUdQMFhKczhwSjlPR2ZvcXpVSFZrR1lUekh4eTV4YVZwRkRvYXVoTHpT?= =?utf-8?B?eDNld2t5SVFJTG1MUjRRenBsZkNhdHMraVo5K2RyT1dmZjhtVUxXbFdOOU9K?= =?utf-8?B?WGRnMnJpVjJsZHczN0FGbzBFY3RNekdLUjdIMmJVZzdNZ0tzUmpSaElERnVq?= =?utf-8?B?Nk5zODhuNTRlT2tyd3dQQ3VvLzZHbW9ZQVk0bnVYaWNMVFZhMDI4RFU2YjJt?= =?utf-8?B?L0huR0dDTGJocGNHYVVIL21jTURFRlRQWTNPbTVWeHlzZWNYMU5mQzZwcFg2?= =?utf-8?B?Y0hQRkhyejh5b1NONENtZ3JEbFJpTndkMHpGaWUxNHZMa1VUQm5ERlBZN0Y0?= =?utf-8?B?UnA3cEpWQzZ4MktDZEtWNExHUkdZZG91REcrVUlOdmd6TWZhbHJxMlZQNklQ?= =?utf-8?B?YXg1d29IZmtiOGo4U2ZwNGtGd3lvQ0xmRFM0aWJPeEcyczBCRFNVOUYwb3RS?= =?utf-8?B?RDUyRHAzNm4rbzFtNTlOd1paSDg2NGpsaUEvMzF5K084UzB4QkU4WHJuM0J1?= =?utf-8?B?cnZiMlQ5OU1ITzFsU1EreGtCMndTb2VsMzNuMnAwTmV1VDJLeHBieUNtQklz?= =?utf-8?B?Q2o4VlRYVWdUdHRJK2h2Nk9KOXJNY1hVR0pIaXA4Nk1MSG9mRFIyeEF4OHg1?= =?utf-8?B?WUJyK3dpRE9mQjh0aUQ5L3RuRFZESXkvcmxtZ3N6a2VkQ3NIQ1NNRVNQWGdu?= =?utf-8?B?dm9KNFZjRWJIdXN0UkRlemdlNHFpRjRjUi9mMVptTDdiZnBFcWk3RUNHMVhY?= =?utf-8?B?VVhrUlRZMXNraFJBYTUyZW9CUnc2WFM3V0dMSUxueFFueW5SQklsRUwwMlBQ?= =?utf-8?B?WVp6Z0ZzQjUzKzBJR3hXaFR1VjRyUmtnN0I5L2wrZ2djcCtHMFRpWWJlWWhp?= =?utf-8?B?QlpsU2oxYU5sUVRIQ3VWTXhRUzhUUG9tbE1jazYxNy9VNlQwbkVGL0pMTHgv?= =?utf-8?B?WHF6TTlKNWRNeEd6L0svdzZzWHlPblZWMjFQMVlWVzJ4OXpWZGRFcGM3MjZR?= =?utf-8?B?RXo2NndhKzVyUHB5cksreXRnbk8zSHZyRFJjMkZXVWViSFNUM3ZoNitPWUZU?= =?utf-8?B?Sjc4Z0Rwc2YxbEVwUCtreTh6bjRiVS8zdVgvcFpXcEo1ZEYwR1lra0RlTXdN?= =?utf-8?Q?vUMCbliyLnTLZNnAPNkTGR3o2?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 078c17ba-dc83-469d-6514-08dd760da9e2 X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Apr 2025 19:52:01.4606 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: TgXSQ8t8/IAczhTv+Iwzk4f8MJvh3wAiL3Q7bWDhP9jFXE+iYJE7g+jh5WJ69yDQIouZoDwS3gvc3DjetwLy1A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR3PR04MB7452 Introduce the helper function pci_epf_align_inbound_addr() to adjust addresses according to PCI BAR alignment requirements, converting addresses into base and offset values. Signed-off-by: Frank Li --- Change from v15 to v16 - none Change from v14 to v15 - change out address type to dma_addr_t to fix below build issue | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202502082311.G1hWGggF-lkp@i= ntel.com/ All errors (new ones prefixed by >>): drivers/pci/endpoint/functions/pci-epf-test.c: In function 'pci_epf_test= _enable_doorbell': >> drivers/pci/endpoint/functions/pci-epf-test.c:726:42: error: passing arg= ument 4 of 'pci_epf_align_inbound_addr' from incompatible pointer type [-We= rror=3Dincompatible-pointer-types] 726 | &epf_test->db_bar.phys_= addr, &offset); | ^~~~~~~~~~~~~~~~~~~~~~~= ~~~~ | | | dma_addr_t * {aka unsig= ned int *} In file included from include/linux/pci-epc.h:12, Change form v9 to v14 - none change from v8 to v9 - pci_epf_align_inbound_addr(), base and off must be not NULL - rm pci_epf_align_inbound_addr_lo_hi() change from v7 to v8 - change name to pci_epf_align_inbound_addr() - update comment said only need for memory, which not allocated by pci_epf_alloc_space(). change from v6 to v7 - new patch --- drivers/pci/endpoint/pci-epf-core.c | 44 +++++++++++++++++++++++++++++++++= ++++ include/linux/pci-epf.h | 3 +++ 2 files changed, 47 insertions(+) diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci= -epf-core.c index d04224b8e1631..529dbaaf76750 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -473,6 +473,50 @@ struct pci_epf *pci_epf_create(const char *name) } EXPORT_SYMBOL_GPL(pci_epf_create); =20 +/** + * pci_epf_align_inbound_addr() - Get base address and offset that match B= AR's + * alignment requirement + * @epf: the EPF device + * @addr: the address of the memory + * @bar: the BAR number corresponding to map addr + * @base: return base address, which match BAR's alignment requirement. + * @off: return offset. + * + * Helper function to convert input 'addr' to base and offset, which match + * BAR's alignment requirement. + * + * The pci_epf_alloc_space() function already accounts for alignment. This= is + * primarily intended for use with other memory regions not allocated by + * pci_epf_alloc_space(), such as peripheral register spaces or the trigger + * address for a platform MSI controller. + */ +int pci_epf_align_inbound_addr(struct pci_epf *epf, enum pci_barno bar, + u64 addr, dma_addr_t *base, size_t *off) +{ + const struct pci_epc_features *epc_features; + u64 align; + + if (!base || !off) + return -EINVAL; + + epc_features =3D pci_epc_get_features(epf->epc, epf->func_no, epf->vfunc_= no); + if (!epc_features) { + dev_err(&epf->dev, "epc_features not implemented\n"); + return -EOPNOTSUPP; + } + + align =3D epc_features->align; + align =3D align ? align : 128; + if (epc_features->bar[bar].type =3D=3D BAR_FIXED) + align =3D max(epc_features->bar[bar].fixed_size, align); + + *base =3D round_down(addr, align); + *off =3D addr & (align - 1); + + return 0; +} +EXPORT_SYMBOL_GPL(pci_epf_align_inbound_addr); + static void pci_epf_dev_release(struct device *dev) { struct pci_epf *epf =3D to_pci_epf(dev); diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h index dcc6e2a2c6b3c..299ce1f1e2d80 100644 --- a/include/linux/pci-epf.h +++ b/include/linux/pci-epf.h @@ -241,6 +241,9 @@ void *pci_epf_alloc_space(struct pci_epf *epf, size_t s= ize, enum pci_barno bar, enum pci_epc_interface_type type); void pci_epf_free_space(struct pci_epf *epf, void *addr, enum pci_barno ba= r, enum pci_epc_interface_type type); + +int pci_epf_align_inbound_addr(struct pci_epf *epf, enum pci_barno bar, + u64 addr, dma_addr_t *base, size_t *off); int pci_epf_bind(struct pci_epf *epf); void pci_epf_unbind(struct pci_epf *epf); int pci_epf_add_vepf(struct pci_epf *epf_pf, struct pci_epf *epf_vf); --=20 2.34.1