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Wed, 21 Jan 2026 12:22:46 -0800 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Zhi Wang Subject: [PATCH v12 5/5] sample: rust: pci: add tests for config space routines Date: Wed, 21 Jan 2026 22:22:11 +0200 Message-ID: <20260121202212.4438-6-zhiw@nvidia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260121202212.4438-1-zhiw@nvidia.com> References: <20260121202212.4438-1-zhiw@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PEPF00003440:EE_|SJ5PPF6375781D1:EE_ X-MS-Office365-Filtering-Correlation-Id: 693c3255-d074-460b-f054-08de592ae414 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|82310400026|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?G2YW64pFQbjyaTlI4cbwGF2wFX3Sods5vz0e8oGFh5X19A/1w4bJf3rzjFjA?= =?us-ascii?Q?lP2LDTgStJKjqlkbyOYfJqJK+zgn23dK3ePJfZB6SCsWfKUjDiEpBHnCIxME?= =?us-ascii?Q?f62zA3AlTwjKXe8VzxgthA9zSM/cEIp/qk9z84BZ656RxzR3Ty+AsrOAM9sP?= =?us-ascii?Q?9l/sCJC6itwVXT5t4RuhVtmsSGBa/A/a6GFYxSEXhfcahUtYhDl0GJf1wfh0?= =?us-ascii?Q?aNmlK20BcxbMiYKy87sSi/tIKhrXQvjRIVnGSJHJT9hHjPF9Buwd9s5nk9fe?= =?us-ascii?Q?EBrZ6bZo3KHHTCat042sckNY7mw39ThVAfR0eQKZEUNBbRVusQzsiORs574i?= =?us-ascii?Q?II+DkjMAvHHuhiPvdlCQsQjaUcrOv5kynqGldONUsOyOiuMpIPffsenlh5LP?= =?us-ascii?Q?GRDQur0BZS1o//NGsL8Bl+cd/rnurgjDlL6Y4k1qpu6E92eDmp0Yj7ehU9UM?= =?us-ascii?Q?8WVa6xE2bdyzxmvhnxw6/tkwviPBaai+8CDHQrehNwoJVjAB6OqD3qBSUTWM?= =?us-ascii?Q?KlPy9/ZoJxpUJaPlv/qyQKh6vFpyekXoR/AoCH8w14bXElKBXuRHY3N6MuY8?= =?us-ascii?Q?1lKhG0JIknG3KO+XXcSS8+9+DhwrVflFiDw7WRMTbGam/MG7jcPVKRdfYKl+?= =?us-ascii?Q?2Hj7gu2nJ9aorisho9egtFEFNsyNUvsoFp/7xlHmqRud9ZUhpqptZ8XEw1BL?= =?us-ascii?Q?FLmP8r5z8KumEFB8ziAlobVxtPCDvQcediKrivAv8fkdd98tD3U2vfVSW0dK?= =?us-ascii?Q?kOfON99mI8PZE4eVyMaTPHdJyCafC0dV2xI2Vk/yTgcuD8+V+nkNoM5PuSVm?= =?us-ascii?Q?Agyoqo86E+WPiPpyMEDtP5wMJpWPlClxVb4iqkzYpdHkfs5KLa/bwxe+x86M?= =?us-ascii?Q?zxx/KCz7dnaIyKbnt7baeko4shrgH82DQx14dmkROWVTyRztPUyMI7QXr8JX?= =?us-ascii?Q?tuH53ju8JHjfijlAVF5wkTqpsBSBqnpTOTN1lnB68EcaXKH7UkBo/mS3vs1g?= =?us-ascii?Q?GTQyTH1WxJahQBbH5ioxjjQaX//PnFo1LxnStIRpT+6T+xCRiJgrzM12YuyX?= =?us-ascii?Q?3K5wKGME112OU3mlDKVy4oh88xtEn7AO+Wlst4jhHVvKIGIgVhoETocs4DaS?= =?us-ascii?Q?GoJxknJylBiL7TqNrg+2clKZhrFRr3QKvjn/IinHahjaAj0lt6bfyKNw6sxf?= =?us-ascii?Q?y8Wy3+9+HLuf627lBdViJtzJqesnn9Z2QjMe/wFnwHmJcc1gS/tY0IjYZRSp?= =?us-ascii?Q?lAyu4+Es2nMQE1XENx+ZMKRHtZhmWa++F1SmR85THO2zhoVpMt3AkMa7ZPsd?= =?us-ascii?Q?AvglyF2vc6RiW0zFGLAw3x4mnzn0t/7bc6sLqVsqDrAuaQ7B0DVPWcCdQGfX?= =?us-ascii?Q?MzBk+SwZgQXPIKMZsujeVvzYQLfEcNBbM0WQD18xX4eeJcNItkCq/4Uk+QZA?= =?us-ascii?Q?ZbVL2QHFBmDeCl3wM8WIYVAnu/red6g/V2Jc5j6I3sx70mju7WarqqA80y1+?= =?us-ascii?Q?brvnHcDKrXvgL60u2bznY3iKUrhSboDnC4sLATDXUNLDYn9L0QBVjOoI1Ztr?= =?us-ascii?Q?zypglSodLH1q8I/0lNhkXCXwt6ZMsozMcz7k6yTAEMlcqVSnjm/aRmucSZyx?= =?us-ascii?Q?ympGs7johgjtBSrVhE1JUavhRPLTqdlpHMtsbrICw1lOI0218qUTn+OW9/as?= =?us-ascii?Q?Hd/wKw=3D=3D?= X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(376014)(7416014)(1800799024)(82310400026)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jan 2026 20:23:08.1902 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 693c3255-d074-460b-f054-08de592ae414 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS2PEPF00003440.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ5PPF6375781D1 Content-Type: text/plain; charset="utf-8" Add tests exercising the PCI configuration space helpers. Suggested-by: Danilo Krummrich Signed-off-by: Zhi Wang Reviewed-by: Alexandre Courbot Reviewed-by: Gary Guo --- samples/rust/rust_driver_pci.rs | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci= .rs index 38c949efce38..1bc5bd1a8df5 100644 --- a/samples/rust/rust_driver_pci.rs +++ b/samples/rust/rust_driver_pci.rs @@ -5,6 +5,7 @@ //! To make this driver probe, QEMU must be run with `-device pci-testdev`. =20 use kernel::{ + device::Bound, device::Core, devres::Devres, io::Io, @@ -65,6 +66,32 @@ fn testdev(index: &TestIndex, bar: &Bar0) -> Result= { =20 Ok(bar.read32(Regs::COUNT)) } + + fn config_space(pdev: &pci::Device) -> Result { + let config =3D pdev.config_space()?; + + // TODO: use the register!() macro for defining PCI configuration = space registers once it + // has been move out of nova-core. + dev_info!( + pdev.as_ref(), + "pci-testdev config space read8 rev ID: {:x}\n", + config.read8(0x8) + ); + + dev_info!( + pdev.as_ref(), + "pci-testdev config space read16 vendor ID: {:x}\n", + config.read16(0) + ); + + dev_info!( + pdev.as_ref(), + "pci-testdev config space read32 BAR 0: {:x}\n", + config.read32(0x10) + ); + + Ok(()) + } } =20 impl pci::Driver for SampleDriver { @@ -96,6 +123,7 @@ fn probe(pdev: &pci::Device, info: &Self::IdInfo) = -> impl PinInit