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Wed, 21 Jan 2026 06:24:30 -0800 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Zhi Wang Subject: [PATCH v11 5/5] sample: rust: pci: add tests for config space routines Date: Wed, 21 Jan 2026 16:23:54 +0200 Message-ID: <20260121142355.4761-6-zhiw@nvidia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260121142355.4761-1-zhiw@nvidia.com> References: <20260121142355.4761-1-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: CO1PEPF000075F2:EE_|SA3PR12MB7808:EE_ X-MS-Office365-Filtering-Correlation-Id: b0514011-da9f-476b-5933-08de58f8db99 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?ONZ3GaIVQKeWXeu5Cx5uzlL4UMer7KLLBUBOSLsDroLe6/XF6O++tGm4qp8M?= =?us-ascii?Q?a+LZHLLFl0c8t7t6v0Uaf9ccm23m7WuvFEzd8KEkV+CgddYIz7s75GaMGKjS?= =?us-ascii?Q?n0XmqjWEZWEqtAS5PrQaT2fY4/kOQzhRaknZCVPtf0Sy+qrbIKZA0tzeXAgZ?= =?us-ascii?Q?WDdJvj1BHRaFjjBitkH3aRkWjmfiIGyGEJy79RHmUuhWLqGYUDTiWlW+LvOA?= =?us-ascii?Q?WlRF7et9Q1ppG+giHxBBEaqDhyZxrnJ+8eCcKjNO6ZcVUyt8UFzBEgQdYat2?= =?us-ascii?Q?JvXwjPQIW+UkTHM+gpn4fmlkExUrGammzHnYo3KnJa88gjVClH6TuU/mUjFf?= =?us-ascii?Q?zUovo1AsNRVeyT18nN82i9p/ydhhKUX7vYdcm5JIlOOkuDxZccpfErBqqFmF?= =?us-ascii?Q?6ljoBGayQXnClu1o/yzpcnYqPsPTGog48kJDaddyjetX+xpNiFVAHEbzC0Cd?= =?us-ascii?Q?bDZ3VEVGPcSYEB4wiPw8RXxST2PPlW8rGaA+MCcOJiG+Eg6FXDtLwwxQXMDv?= =?us-ascii?Q?cnxp4VdENQ/AYAk/ByZTu46B/R55tXMnwZ0hA8EoIgUeaYjueIlMDI64SiEx?= =?us-ascii?Q?Gvi8x1MfV9SmnNuZkQev7fqE5P8fTBCqpcQ0lM1o3o5vDxSQ+4ArZVdV3EbN?= =?us-ascii?Q?414xBunDZIUelGoOB6ZAGS1dPx6kZ8ffjrpjLcW2fMiDS/67wh+oOc2FWuf4?= =?us-ascii?Q?LjZ6zLfL3Ov9ELYU770R51Xd59RQabXxqa+mwIYZo+SqyE55oSUB4SUonrD6?= =?us-ascii?Q?hO5WJNeLhn0h7NYs6KwyLPn7tbUnA7mkiaz8nxYB8bXlkJXQ0o1Q9EHI18lF?= =?us-ascii?Q?E0VOC74AMeWHu1MupGJXDtkAanYUTbQFYfx6gJA7PgHBLLQNsOeBKqZxmIgU?= =?us-ascii?Q?yCaZsIx6WgHE+cYg0tVQTQjGCEXRWn/Itxagyq7cLQc4F9Q1kpY75iIqvyG5?= =?us-ascii?Q?yoI5Kvb9vrRmMZEwdtJXKiLI1FjJ4+hic5hWhxXCbP4gxu4LMgqIGx6FuYIa?= =?us-ascii?Q?WS4LjW4ixlfbC8PXCjkioWOOJijbtuRi9Pmi3Sq0S2LbvSOuhCWJIQ6ZygpZ?= =?us-ascii?Q?YEXQ0xvfr2ELJ52140CrW4msetidvCzHy7CgEKxtNpSYMuUqj0pu26QXQ9m3?= =?us-ascii?Q?gav/MEfn6dnS7+9vXk49SzeDSLvA+GYZb/aqQIPyd9J1Xr3Mu5pvCEBqdqu6?= =?us-ascii?Q?4WAD8MIAOghxKdEsDHsifjWiOyjjqiQo6M/rKdPpjuZDN1njzjexMUWVMX5o?= =?us-ascii?Q?f7SMUEjQyHXhf0x7NV3RpH9QElc7befbix66qJsSoeqQa/r0hvypRodfUVVO?= =?us-ascii?Q?gBXOo0ENT/SG/J7f/aCkqDjS6uCTMBzjCGLhWwuF3sGyO9aHFkgB1KVSEQWZ?= =?us-ascii?Q?14Oqpr8zD3o1gO+dNGXSspS4N4gpTFIlfylyOLlB3LBzap5BBbZNsCg9Gdvc?= =?us-ascii?Q?iIBdzjghQb8nYeVTwtu+LPVyR3d9Xk1vLDlUlWdSD03yPD0AIfYjExCXcZJR?= =?us-ascii?Q?e9XUSL0/uwV4jlcdZBr8vYbboOneeW8hKh6lnCr2VZAdJwcyW830nMYW04Xf?= =?us-ascii?Q?v1qrqDBqRZuzANNoSjPWbdJ4q/tpVajzKj6z4CeadDs8YDD5IY5gCOE212yn?= =?us-ascii?Q?PGPrpU0EHzKeoTF7Z9Ug09MDPs894LRBxeOpfGU22F+OUNhT4m0BSEMBhPL8?= =?us-ascii?Q?3e0nNQ=3D=3D?= X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(36860700013)(82310400026)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jan 2026 14:24:59.1713 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b0514011-da9f-476b-5933-08de58f8db99 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000075F2.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB7808 Content-Type: text/plain; charset="utf-8" Add tests exercising the PCI configuration space helpers. Suggested-by: Danilo Krummrich Signed-off-by: Zhi Wang --- 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 bfb053059667..26f0887a74e8 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::{ @@ -68,6 +69,32 @@ 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 { @@ -99,6 +126,7 @@ fn probe(pdev: &pci::Device, info: &Self::IdInfo) = -> impl PinInit