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Tue, 4 Nov 2025 06:02:45 -0800 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , Zhi Wang , Danilo Krummrich Subject: [PATCH v4 4/4] sample: rust: pci: add tests for config space routines Date: Tue, 4 Nov 2025 16:01:56 +0200 Message-ID: <20251104140156.4745-5-zhiw@nvidia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251104140156.4745-1-zhiw@nvidia.com> References: <20251104140156.4745-1-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: BY1PEPF0001AE1C:EE_|BY5PR12MB4034:EE_ X-MS-Office365-Filtering-Correlation-Id: 5105df0c-d71c-4b6f-528d-08de1baae5da X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|36860700013|1800799024|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?GfaSHuSn9Xl4h3DhDZj2/aYWJUQGGM8w/pmxP/49FP+85UxUOxunnaRsbW4i?= =?us-ascii?Q?dzV8wVgpYI7PQuljtN3oMOazCmiIrUWyygCtaZbDUBG17zFW4sqhjeEeZJFa?= =?us-ascii?Q?qpL/sVKLbc7NmGQIUccA+TERxOMgB1JpB2apwLn52Ave7fqK6bUnMHxljnkH?= =?us-ascii?Q?bxzGZ2UialHISOh4si+DGLu9S0MVjy//VYb2Ybh/IA/kau+wdN+dt4Ea8fr2?= =?us-ascii?Q?3MJ/Uz6wOfjhaMdFWz7xB6NGbRlhxEm9R0qZ2y4sWE9wLM0TsXBUXlu3s3Wr?= =?us-ascii?Q?2suHxd53WQzIFvGB62aiQB39e3A1eSqxGbEg7Y8YPzIW1g2dBshSbq2yFgo7?= =?us-ascii?Q?So3rR2aQapV73YZ8f658igJYdzMqJAxMG0WUUCan27Epap7rLTdtuJF+QSxR?= =?us-ascii?Q?XKpzX4O1jRH+fgVmxx2j3eFY+JThX1rDsAE83oF+lLvyBssc9gC8MXotIdMO?= =?us-ascii?Q?VEBmYVg9B5OggnKD3YyV6OLcbBSnbRCLvm6/M9oh8fj60faO660BcpSwiBGi?= =?us-ascii?Q?z8Q2AjymN9SKgNhxpMY+PP3Pvgnp4YYqcIUMTeELEhEJ4LmJ0TB1gMYOOY/8?= =?us-ascii?Q?zkDC/VxpX4GeOdRRPz5KjNDVFcfqYqw5i21fcdhniXVxp7iLdm7m70S7IwEU?= =?us-ascii?Q?tR07GAnIx2P9kaMJ9uuy/zH7fquJsw8lFkZUK351Ke1h6e+ZBpUU4Qpx57+S?= =?us-ascii?Q?scxbUSWdqe2VIqXK8hh2Qr8R+5KO6MEQkUq92eAah4wDK0vfIgmDExnCThNd?= =?us-ascii?Q?CGROwIl32PCfGmDgWhWqyT8J+fgzxC3ICTaBovsQWkiMbHOlKNN06XEtKL23?= =?us-ascii?Q?QUwe9q38P6yNFaJ81AirA8AK9kvUxsjZPAQMgC4BMmUVf7R1Mv9KYSxx1gea?= =?us-ascii?Q?Xeg74PvvNuj/BM4o3CTfIUsTtpbto46WgyOCzku/m8rVjADi/5lwK5Vkf6+z?= =?us-ascii?Q?j6T6ncujuJScnCqeUETvS2MIA2Tj2ft37jju8tB24rTujVA9okFm5UFVoGya?= =?us-ascii?Q?SJRELmKo+kz9xQO6hD53mm7SO3fXd6ZvL1DS2mb6m8UYqActUiZU0ls+qfQb?= =?us-ascii?Q?Hna4LPmc3OmW5DRbEcU6fvs96Ok8uPMPuAYMKDr1I+mGNTvqu0ORJF0A0noU?= =?us-ascii?Q?Dyd2WGp9xM8cdaUigTNpU5TWvxBO7Du7yrHiWz/5rjer6ul2xUNwbKph70ht?= =?us-ascii?Q?3Gy2nNPSt2T278TyzjwUhU1h5W1HUocemxaGUe6Fmbv73kyxdUlUVBhabywM?= =?us-ascii?Q?Xmu/XlnsToT9sIoVh8OHx9r9a6r8txsUOrBDEQSiBKVr+0uUf7ebdUZVWitJ?= =?us-ascii?Q?bAia9ndosAR5Na3m1ZqrCD4majK7HicRQQNU0DSQpK2sZkh4/HKNQk37+yNX?= =?us-ascii?Q?tXXAFyq5j2auP5i0vLdU/CSzXyacfDL8tiRK2Z7lec2OXgNBiIqUBkT3ANik?= =?us-ascii?Q?4dtP7jFW2030/lm7tVRtb2VFxL8oSHvRyH2JFPG8RndXzGLWd3sO/hz+FavG?= =?us-ascii?Q?yJPYYSZyosp4Y210uw41vskrmKqJAYGL8CX6DaC3Ujhhd5riX28yRzwO8GTi?= =?us-ascii?Q?3wfDl5UZM6mGpwd6Rws=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(7416014)(376014)(36860700013)(1800799024)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2025 14:03:14.6564 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5105df0c-d71c-4b6f-528d-08de1baae5da X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BY1PEPF0001AE1C.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4034 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 | 46 +++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci= .rs index 528e672b6b89..6f0324b6bdf6 100644 --- a/samples/rust/rust_driver_pci.rs +++ b/samples/rust/rust_driver_pci.rs @@ -58,6 +58,50 @@ 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) + ); + + dev_info!( + pdev.as_ref(), + "pci-testdev config space try_read8 rev ID: {:x}\n", + config.try_read8(0x8)? + ); + + dev_info!( + pdev.as_ref(), + "pci-testdev config space try_read16 vendor ID: {:x}\n", + config.try_read16(0)? + ); + + dev_info!( + pdev.as_ref(), + "pci-testdev config space try_read32 BAR 0: {:x}\n", + config.try_read32(0x10)? + ); + + Ok(()) + } } =20 impl pci::Driver for SampleDriver { @@ -93,6 +137,8 @@ fn probe(pdev: &pci::Device, info: &Self::IdInfo) = -> Result Self::testdev(info, bar)? ); =20 + Self::config_space(pdev)?; + Ok(drvdata) } =20 --=20 2.51.0