From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2040.outbound.protection.outlook.com [40.107.223.40]) (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 1F2A021D3DF; Tue, 8 Jul 2025 06:05:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.223.40 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751954751; cv=fail; b=qQMZiVN6xdFRq6UXocc7t3cSVhD9T9UBj+OssdW+E1J3NoqYWo4AeW0ylKmS3SLWaznU4PED5KGUmVa/KSWxGclVvn3kbzcsgy6yun3h31H73/aYBVb3rSUofkI0n0DhzjU3HR6AM3+JAVnzkS9cXPk8WIOLCfdfRTTL7E5ud/0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751954751; c=relaxed/simple; bh=tmsNhFFCvChbaqTZExlc9zJM9r178e9/AYfrKaN5xz0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=UAUzdMQJqVkn0o02G9fkjElD7DUzdKkqOJlG9AiWoLrMN9uc2QQgoMnRKap3Pp9NQInddKnYK70vjozVI0kC6xITi3JU/ydbRwVuhDVTRk+obkA1NbtNLkUSHS/ecQW3EAIR1CWz06WL5B9w3POSbRQ+rBoTFBHIRd7TeSJVk6Y= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=p3hK9vbo; arc=fail smtp.client-ip=40.107.223.40 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="p3hK9vbo" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=vgE34KSTQfgWnpz3WhfQ3F5ajPvXsPwlloX3D9wlMtbjwNnDPPObHN/X0Qet6MTEhfWQN1EkT1C0x7AJbcPuR9SBEeYZDxgilVJ9YqD9l7Llk96KVUJZl57scXQAN9r3B82PIDOL9tVlQoz6XlJW644MC/+/gWHTioSkUVsltzmUyW+aN0nvlHvk+wyzbxk5U0Ca0L0Hi0cAKobrgLMzb2Sesw5/a14dVeeKlXP3iST0H9Jh3ju4kKl3BOMzZnotU/pwmAvFUBqeEf4XSmCWJCxEolA7jRzewKTrT1FLyoheyeX9iXYsGTW3CUsLq2jJ+bqxhNTx3eUE/DGih/nt/g== 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=gsi83D41GxoqWqZ0FTXR7nj3es26x5pSX5HWfArz/zo=; b=mPoM7eSCed6Uypa98gDhvXdZunQpwkbbZX/pF2aq13BRGcvlG8SFOXl31sOPNdhCqVD9SX7q+tXRWjuqZEBFVZnB9csmfaLEeTGpv/l02LpaeNXjgKd3CY7uU+BEnTvoq6xGF7NLOE+kMK9vrJOxFsK19kPJ8hsDT38eCjnNHK3w2qyvm+sRc//k5bEsqi8IcNv1zN61QfFxjtyMmkxaeTFNEVt70ACS5zIemCC/eECR+8HlWVmBAMq+5Bj6QzeOpxahN4CJxR69f0Xkx9Ny7eGrUE8wPOkqxv2Wtq0Tv752BVJYdLwuDeb5BdNRDr+lzN7DPGO1FqjbckfrEAj6Vg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=gsi83D41GxoqWqZ0FTXR7nj3es26x5pSX5HWfArz/zo=; b=p3hK9vboat4AC01lYuUa6dW2nGrqwJ0OtT4H49O0ezBJTmbiroBc7trbcUL7e36ulm/juULTpfcVa0j4rBi3l3vzFw3/iU/VjI67b+Ojej3QW1u+g3q1UeuSW6o001lNHn1TGr4UJkTc2TCE16KvBe4nbmwXox+9agvpZxi5Uj27oaixGIEtKof+LvmNOn5LV3S7ueeq291lNfUoDv6SZzGuN6fQe4r0JmJEKdrBvmRz76TnL6/KnIdJEhgY8uWYEbxB7b/LsKS3M+zzVcE5ipi9dYaOw3DOkucTHHwPA+6ec2hAHUYc4rXeVHb4c3cMfufaeBveNGRUHy7kMWY1vQ== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from DS0PR12MB7726.namprd12.prod.outlook.com (2603:10b6:8:130::6) by CY5PR12MB6274.namprd12.prod.outlook.com (2603:10b6:930:21::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8901.26; Tue, 8 Jul 2025 06:05:47 +0000 Received: from DS0PR12MB7726.namprd12.prod.outlook.com ([fe80::953f:2f80:90c5:67fe]) by DS0PR12MB7726.namprd12.prod.outlook.com ([fe80::953f:2f80:90c5:67fe%3]) with mapi id 15.20.8901.023; Tue, 8 Jul 2025 06:05:47 +0000 From: Alistair Popple To: rust-for-linux@vger.kernel.org Cc: Alistair Popple , Danilo Krummrich , Bjorn Helgaas , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Greg Kroah-Hartman , "Rafael J. Wysocki" , John Hubbard , Alexandre Courbot , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] rust: Add several miscellaneous PCI helpers Date: Tue, 8 Jul 2025 16:04:51 +1000 Message-ID: <20250708060451.398323-2-apopple@nvidia.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250708060451.398323-1-apopple@nvidia.com> References: <20250708060451.398323-1-apopple@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: CH0PR03CA0348.namprd03.prod.outlook.com (2603:10b6:610:11a::23) To DS0PR12MB7726.namprd12.prod.outlook.com (2603:10b6:8:130::6) Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR12MB7726:EE_|CY5PR12MB6274:EE_ X-MS-Office365-Filtering-Correlation-Id: cd83088b-fa3d-4e57-7529-08ddbde57b17 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|7416014|376014; X-Microsoft-Antispam-Message-Info: =?utf-8?B?cXNGWWw2OWhVYXF5OHNnbm80cGNlOXdNRFRiNTdJSFpQSVgzWGpIRmRqak5n?= =?utf-8?B?am0reHl3Vkk2WDNFVDVBT21YYzN1WGZNSEFvWXEzZTBUVUFzMlh0SE82SXha?= =?utf-8?B?M1RWNnpnSVpsU2QvRElqWDVrUnoyeE9qbDBqS1FWU2hVODZzMDFuUWFibjJN?= =?utf-8?B?cW1Dc1lUdU9UNVQzdzZBVEk4WHRDeEVlQm81UmkrUkpSc252bzlEWmtsNDRY?= =?utf-8?B?Tk5ZTW9TQkN1bElaQkY3aUlELzdQdnZON0RHZnZqOHRiWWdGMFp4SmkyelQ3?= =?utf-8?B?OXRMQXprV1Z4VnhvaEl6VnpLQ2ZESmNBVEs0TkJqZ0JQdlhYV3k1MGtyZVRJ?= =?utf-8?B?b1pGNjY4SWZhUEdCd0ZpOXFHUXVCRXJZR2VnY0x1MWVVUy9yc3BYQjJ6Ym9k?= =?utf-8?B?clZkRm1mclRpWEV1bDFMOWo0c0VaWWMrdW12bmM0OEVwdXdzdzNhU1UwUWhI?= =?utf-8?B?K3NPb3V4eVZOb0pYMXJocXpvMGl5SHhrRWtIdG5yc0plZ0hWc0dhWmc1c3gz?= =?utf-8?B?Y3pSMVVDNXJiSEtrZnphNzhzTitJYTlJZXRFMzE4MVhWbCtRVHVrWVV2L1JI?= =?utf-8?B?UjNDWWhjUDVEQ0M4WjdGUHFUNTlaSm9CNDRIQ3l2Rm1hYWdRL0g5M0E0UTBi?= =?utf-8?B?Z1pzQXRwdWI1TEU2ZVhwYkdJVHJQY256UGtKR3Y3d2tHcXF6S2ZoOWl1M2dL?= =?utf-8?B?TFJHSFd3ZS9aRFJwVXBiYnRrR290SFltV2M4MmtiOEllLytDNy93SWRnSi9Q?= =?utf-8?B?S0tUZ1VCTnVQUGZkODBWMW1wN3N6TVBGOElBWWorTTNqUGVoTGRLakRWVTZo?= =?utf-8?B?VXpSbEozeXlXZndpTGpCa1R6MHltdkltdDBCL0RVVUN6cnZzMGhoa2cyeXo2?= =?utf-8?B?MjlpaTA3aXAzTlRuTjR6MjRKZnNySUhjZVFDNUdFaTZ2c21RT1hSR04xSDZ4?= =?utf-8?B?WEJPdUl5VkNwZFAwRWlaSEFISWpyZWhWS1FzQi9IZlZrdWxHVTJybU5EVWEy?= =?utf-8?B?YmN0TkkxRXVqdkdnaDZFMFRjRm5pNjg5UXhiUTQ4ck5yWHNRbFQ5dWEyRmh0?= =?utf-8?B?T2hBMnlJbGVoSGlIQmE2N0EwS09WS1h0ZjZlR1VzK3I4S21hNGJOaHVZZzF3?= =?utf-8?B?TXZudmUwdmo4Vm1BTDNvZ2dzN25VSEw4U0JYcU0rNTlxRXlnWjdZd1VLVisx?= =?utf-8?B?eldPd084SUdPemo1UGhOMm5XQ1k3aUtVMi9GOXFnQ2FNckZmaFduMGJOTWl0?= =?utf-8?B?U1RucjlyQWNzM0NqYzczVTVMQTVZTHdtSUozK3VreUY2T25oUmM3Tno3R21T?= =?utf-8?B?R3RES0s1eExmWWxZU0l6KzR0UjhFZk8yN0J1SFA3Nms0ZlcvMVF2TisrWUlX?= =?utf-8?B?TmRkMTJQSDk0b3hVTmNLQXpBVDVQc1YxQVZteDBRS0xSK2E2cytkN2RMcm5r?= =?utf-8?B?MWJwZlpMZUtTdHJiOFlva0xUcFFrbjRMNGhlVGxKZWs3b040ZzE5RVUwMUs3?= =?utf-8?B?WFdDNEw1YjZTb0dXWFZmZ2pSMXBGV09sVG9DbVdkMktmUG5naDFNYjJ6VTkv?= =?utf-8?B?cE1mNFU5eUU0MWNkaElDM1BwemVsdlJ1dThLM1I2b2JmYmVFVlNkcFdNQmdm?= =?utf-8?B?YmVTb1Rjd0lFNE5xcWRtZ2dZTStvZDJBS01SZ2UvK1F1cUt0SWdoRzVSR0o0?= =?utf-8?B?a054VXkxemk3Y0hMblZzRzJ0ZFNEb25TcHRnNFpkZkNyamx1bHY2cThvU094?= =?utf-8?B?anZiL0hlYUYrZFBNNjVRZmNYL1ZubElITGpNVEw5dllEVmh2ZkFlaFYzejd4?= =?utf-8?B?TnRUN2RnSGkrRVRyN0hZVmJHbkdoZUZ6UkY4Wjg0c0JCbTVQYnpIaEZHQWtX?= =?utf-8?B?a3M1emRkck9FYW0xQjNQSzlvMTJVeVJPbitIUXlISjN4VkNQcllhUHIray82?= =?utf-8?Q?bnMmmiV4AXU=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DS0PR12MB7726.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(7416014)(376014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?SkI0SDBKcEE1dzVqY1R1c29vS0xCQ2NNSEFlM3N6MEVocmlmbVlIYlloYWh1?= =?utf-8?B?c2dXV0orN0hWSytjcXVHbXJpc2dsZUxZV3pNVVBPclpJcUxXU0hnSHVGcnhm?= =?utf-8?B?M0N2R1VscHlCcTl3a0pyeFR6YWlGR0lpTm9LaVFmbWptUmYwY1BGQXpWeU1C?= =?utf-8?B?dktoWDRkR3BhVUx2N2RIRnNkNUM4OWJ0UWgzb0VWYlRQN2grMjhpZXJaSEI2?= =?utf-8?B?VzVmQnM2a1BpZ1hpR1JoSnZyS20vUTFPT0hQQ2pYSU9jdTE0dmxFSVdNWlVp?= =?utf-8?B?YkExTkpwR051SVJhTmVXQ3c0SzI4VkhVZjdrTjA2OGdMall6aEUrVVB2dTJX?= =?utf-8?B?alptWEh1Zkk4dS9VVUhIMjJaTGhaWEJhcDRYb3lSanZ0UUdybHYwb1NySmpm?= =?utf-8?B?QkJuL3pOdlJ4dTJmMWwvK3RoVWQxdzZsMU50SmYxa21KTWJYMWdVUllRWXFQ?= =?utf-8?B?OFFSandWTG5JMmcvZFF0eEtZOFB6Tkcrd3F3MVpCSWQwekpHdU1nTkRwY3pq?= =?utf-8?B?bjREd1ZaTlRodEUrZ1lSajBqd3ZxaXg1NGtSVm5ZQ0RYR1BuSkZEczNRSHpn?= =?utf-8?B?WnN3eWFCY1Z0dFErVXQzSGNlMUFjdWtiNHpnN3R1NlNNd1FtanpOaTNTOUQy?= =?utf-8?B?a2lQLzJ5elFjUUdHTGJ0ZmZVb2F5MlppczVTWno0dThEeDMzcFc2c1VCTEEx?= =?utf-8?B?NXhnWGJIWWFPdWg2c2lVcFBvUlYvenFGK0hDOW1MUzdla2l4NGRaVmV2SEZ5?= =?utf-8?B?T3lkaEptVWZKZ3F2eStXZ0VodkNiQU16TkFkd0RKRUhxUGpFUmQ3QWY2UjU0?= =?utf-8?B?dXh5TGljdmFVTU9hbG5teFJ4TUcxUDVPT3RPRlhRZlJKTEVWdU4wb1Q4bWZ4?= =?utf-8?B?bEYrZFpKQ2R0NkFYSU0xMW1kWHRTdUpkNFdTQTU0SFZHRnFnNEpEMmQ2dEN2?= =?utf-8?B?TnNULzNicGJuZEo0OGY0akF3YWhwT2dacklYSWNLVC9HZ2xGaGRCSnJBazNN?= =?utf-8?B?QTl1SzV5d3kzS1Qwd3BhS3p6Y2pGUEtCT3ZhbGEwUkZtLzNNcGlEZzR5UU5F?= =?utf-8?B?NFA1dHE0emFMUWVTSVhOdUsrOTdQZE5lMnB6ZDZ4RTZtdjgycXgvTXhvLzVR?= =?utf-8?B?K1ZpdmFNUXhQU2h1c2QrYVMzRUt0MEJNVlNhbHY2Wm9FbTZDT0ZWZ1N1Qytm?= =?utf-8?B?UUJxZEtVSlp2bm1UTUEvd3ZTQ29mc042dWFPamtmb3MxazNRVU8vbFF4V2Fi?= =?utf-8?B?ckgzMDBkaEpLL1FFQjJmSmM2cXNyZ2UwcERLN1dYOFkram5Yem1ZOVdEbHE3?= =?utf-8?B?ZjJ5ejRxN0MwNDJVTWNoRm1wR1RMdzc4OHIvK3BwbDZMc2Nva09SM0RCZkp6?= =?utf-8?B?V1l6cEhad2dlcFNGeHBNUGdDbXJrSlNCTlE2dGRwdHQ1MTNZWFkvdzNBSktr?= =?utf-8?B?K1NQajBhMlhOdEVmODJWMThleWFjT2tCYWdrNWhFR1lYeWkvMEI5NjYrSTU2?= =?utf-8?B?N0FTTVY3QzBKVXhqcWN4Q0FhMWdNcVVmajNaNE9DY1IyOWI4THZwZUp2MWpq?= =?utf-8?B?NFhyYXh5TkNtZDViY0pzdmc3aWgzamNLSkN0cHNTSVBDRGV0c1Btam45U0Vy?= =?utf-8?B?TVJ6eWsvcUNqKzZRREpjL0E0Yzk1Q3V2MzdWWkpTUHFLZ3RrSm1tQTFmQ3Yy?= =?utf-8?B?emFKU2JOdUYrdXNuVVB5Mzk3RmZHanRqbmwwMGN5YjRLdTJ3QnVzcWZiRFBt?= =?utf-8?B?MHl2Rkg0elhsc3F5S3EvUkc5emM5RzNQcmtESU5VbzFPdGJNSGt4TFJsR1lq?= =?utf-8?B?YTh2VytiaWI3VE93Wk5MSHVibW1YaGE3N2VRcHBueHExNjZVVS9kak9pNEx3?= =?utf-8?B?M0QwcFNXRXZYTmh1NU5VUDRHRXJnb2k4NkQ0WG9pOGE4NWpneEZjVzVQbndC?= =?utf-8?B?enNySDdoR2dKTFpvN1JHUXRZWGpnMjUzaldxbzIxUHNnckVuTFVSZjdoa0Y1?= =?utf-8?B?c3BKWWNERzg4dEowVXN3N0VxVDY1WFB3UnZ1RnB2S3JRSDFZdXJLdUZYM3RR?= =?utf-8?B?MzVVYmNucmVMaS94OWYreGs3Wm80b2V2aS9OMXcvWFBjdUdsMk9LV1FwWWtm?= =?utf-8?Q?qx3gEsHS95LNc7xN/SGnXxCe1?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: cd83088b-fa3d-4e57-7529-08ddbde57b17 X-MS-Exchange-CrossTenant-AuthSource: DS0PR12MB7726.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jul 2025 06:05:47.1526 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Ce2Kf49EMd5+gB7aa1aj5XQYw4SharBVKx2VGWn2keeTBMbcdmosD4yPguQYsp7buKrgzNSqR9CI2nvrkJAeeQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6274 Add bindings to obtain a PCI device's resource start address, bus/ device function, revision ID and subsystem device and vendor IDs. Signed-off-by: Alistair Popple Cc: Danilo Krummrich Cc: Bjorn Helgaas Cc: "Krzysztof Wilczyński" Cc: Miguel Ojeda Cc: Alex Gaynor Cc: Boqun Feng Cc: Gary Guo Cc: "Björn Roy Baron" Cc: Benno Lossin Cc: Andreas Hindborg Cc: Alice Ryhl Cc: Trevor Gross Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Cc: John Hubbard Cc: Alexandre Courbot Cc: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- rust/helpers/pci.c | 10 ++++++++++ rust/kernel/pci.rs | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/rust/helpers/pci.c b/rust/helpers/pci.c index cd0e6bf2cc4d..59d15bd4bdb1 100644 --- a/rust/helpers/pci.c +++ b/rust/helpers/pci.c @@ -12,6 +12,16 @@ void *rust_helper_pci_get_drvdata(struct pci_dev *pdev) return pci_get_drvdata(pdev); } +u16 rust_helper_pci_dev_id(struct pci_dev *dev) +{ + return PCI_DEVID(dev->bus->number, dev->devfn); +} + +resource_size_t rust_helper_pci_resource_start(struct pci_dev *pdev, int bar) +{ + return pci_resource_start(pdev, bar); +} + resource_size_t rust_helper_pci_resource_len(struct pci_dev *pdev, int bar) { return pci_resource_len(pdev, bar); diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs index 7f640ba8f19c..f41fd9facb90 100644 --- a/rust/kernel/pci.rs +++ b/rust/kernel/pci.rs @@ -393,6 +393,42 @@ pub fn device_id(&self) -> u16 { unsafe { (*self.as_raw()).device } } + /// Returns the PCI revision ID. + pub fn revision_id(&self) -> u8 { + // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`. + unsafe { (*self.as_raw()).revision } + } + + /// Returns the PCI bus device/function. + pub fn dev_id(&self) -> u16 { + // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`. + unsafe { bindings::pci_dev_id(self.as_raw()) } + } + + /// Returns the PCI subsystem vendor ID. + pub fn subsystem_vendor_id(&self) -> u16 { + // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`. + unsafe { (*self.as_raw()).subsystem_vendor } + } + + /// Returns the PCI subsystem device ID. + pub fn subsystem_device_id(&self) -> u16 { + // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`. + unsafe { (*self.as_raw()).subsystem_device } + } + + /// Returns the start of the given PCI bar resource. + pub fn resource_start(&self, bar: u32) -> Result { + if !Bar::index_is_valid(bar) { + return Err(EINVAL); + } + + // SAFETY: + // - `bar` is a valid bar number, as guaranteed by the above call to `Bar::index_is_valid`, + // - by its type invariant `self.as_raw` is always a valid pointer to a `struct pci_dev`. + Ok(unsafe { bindings::pci_resource_start(self.as_raw(), bar.try_into()?) }) + } + /// Returns the size of the given PCI bar resource. pub fn resource_len(&self, bar: u32) -> Result { if !Bar::index_is_valid(bar) { -- 2.47.2