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Tue, 4 Nov 2025 06:28:24 -0800 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , , "Zhi Wang" Subject: [PATCH RESEND v4 4/4] sample: rust: pci: add tests for config space routines Date: Tue, 4 Nov 2025 16:27:33 +0200 Message-ID: <20251104142733.5334-5-zhiw@nvidia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251104142733.5334-1-zhiw@nvidia.com> References: <20251104142733.5334-1-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: SN1PEPF000397B5:EE_|CH3PR12MB7572:EE_ X-MS-Office365-Filtering-Correlation-Id: 0f1cbbfd-6606-48bd-3a55-08de1bae7579 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700013|7416014|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?q7ULHczdKnRaCozRRT1MerRMLWQhiGqc+j2+ZvOd0qAz51qg+IoAnlmcdm4o?= =?us-ascii?Q?Ayici+5wSzhPUlsg45jwJqAL3kj2qg7WFCCEWUgx/vau9n83vxnECj0HSrTx?= =?us-ascii?Q?NaEtaat3d7uLTdlH3rLjX6Dlws3pOeU6QB4GEI+udl11JDyPj5bVizoUiwzS?= =?us-ascii?Q?eVDtC7YC2d2ftvoEE71rxpbJEOTVU2BaoOcY9fTm+uy4vtkEX4F1y6uIT8up?= =?us-ascii?Q?wKVHQuoXtveLSD/pdtjq35GhnS5+APTBhg2cgE7961Y5i2wSx+ItAYJ9+25I?= =?us-ascii?Q?g0aFbIw5NNnG3LQhshhFTRvaaYzinns52GjaaVuE40qu+1nZIGGYcLI+IplA?= =?us-ascii?Q?IqMw8SC+Hpx+TSdgkDJVRQjm8XY8rm/iCj5cZmYpMTvC9VwPlnZnV/rYOk3c?= =?us-ascii?Q?Nti34AxUaYtIqjWbXrvcxOV3agUZ/y8vXwWlctC6/+JCq6pm3NIS8tJv/TBv?= =?us-ascii?Q?94glZ18k6txTLzWUQSJjWKP7tnFwyGPS51peda1aqsusDCUpWgMQY4/WmwK1?= =?us-ascii?Q?cJ+//7D9D2MkBBu4RepU3Ukl17/P3oaPQ5FOE4xilDf5YW26pUF5WZ1nFtUm?= =?us-ascii?Q?EyWOH/GYtjjkm12swUuGzAjFCxq9A68wJquJpeUM5VBt3ZS0y/K76Gbuc27h?= =?us-ascii?Q?W3LiofshBmztE1HrIEZhzH4UK3M8rTI0Lg3PlrRNlCrDobQLj3nmkiT5N48S?= =?us-ascii?Q?Mt1AIIME4pLIm7f3dL4vO/OMTz6m5/VnqgyERS+UcJeixuVnDUxQGXW+Oe/C?= =?us-ascii?Q?U8UYyOl9WBhULnPEy2EvfgY+eQwtj2EO3og9GlvLYNkDoSRktzJd0xkJCJPf?= =?us-ascii?Q?7+r2CoEaeWrYH49pCYThYX0msrGtdTG7IB1CLTJYmNTVIfj8tDdCIpkzsLt4?= =?us-ascii?Q?woT5RdEJLU/mLfm/Tz87oHUHPoPWIKgzRQbjayrRS43Zo1Y9SoyGi8ML0bzd?= =?us-ascii?Q?3CAQ60RyabjmwAtB+duCJsbSQ9y/V+2A0u28hG6+jaZZoFAMjJ+vFF2VkXUV?= =?us-ascii?Q?tg0mcRVmrCsU+qS8orMhDJ88jYBK9rVbWfhoCIrv4iywHIEMOGQaPvu60CvR?= =?us-ascii?Q?hry2I8UNnoUNKZS4q5bOiYIuoDjDIdW8fwNDxPJMwtiGJ+pdGGCoqjRxWbnZ?= =?us-ascii?Q?cSh7oRd6Ia3rdvbnF5agQuNX0W1EyIcdDQn+KpCkaf8TNxWbwL82VnSbLik8?= =?us-ascii?Q?d3sn7yNbyYPgUo9fmFyW9ewRQ89qoHko/hGKtlaLKkOfJq8D3P2+JF0OPM2e?= =?us-ascii?Q?Zy8/wooLfRrIOeVhy7VD3QGPLOMsKfuO5LMNGryhD7avO1YPImHyL1cIdSQJ?= =?us-ascii?Q?ziyKuz8wJrzkzCh0N3CBnZ0UVWxacQFiLHTWZNWX0VFBm0ZPqKadQ3eW2dPZ?= =?us-ascii?Q?i1uKH+XMxGGKAF+xmMMCRO8lKoTg1WCaakUhCEllrGNE9Ljns/iemZtkblNP?= =?us-ascii?Q?yqeCVg1VUvyRtRJ8VMbZp7z8xQOQ+FcOFfjdvx11bENzQQwWsgp/qeFHc+0z?= =?us-ascii?Q?6ycA9YaIsy028VaxvnKfpv/jR3mL2uunoE41o4PzjVH603kXlxxoIDzyORSl?= =?us-ascii?Q?TPnkWWPxRzDRkfj2Iko=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)(82310400026)(36860700013)(7416014)(376014)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2025 14:28:44.1324 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0f1cbbfd-6606-48bd-3a55-08de1bae7579 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: SN1PEPF000397B5.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7572 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