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Thu, 15 Jan 2026 13:27:37 -0800 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Zhi Wang Subject: [PATCH v9 5/5] sample: rust: pci: add tests for config space routines Date: Thu, 15 Jan 2026 23:26:49 +0200 Message-ID: <20260115212657.399231-6-zhiw@nvidia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260115212657.399231-1-zhiw@nvidia.com> References: <20260115212657.399231-1-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: SJ1PEPF000023D0:EE_|DS0PR12MB7804:EE_ X-MS-Office365-Filtering-Correlation-Id: efb19455-e75a-445f-78c4-08de547cedf3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|36860700013|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?q+CpuuaouOYaZBjnyoJFSY6klkSuAcuXpco0pk4fAfB3DTfcWeKhhgfoxuId?= =?us-ascii?Q?a2Cld9S5UGYD+KggE+Xke/hf4k53gJa6Q4X56+LgVzU6KeRJhU+YN+pBCBLo?= =?us-ascii?Q?k3H6OXsVZyz8zCsHDrDf2lXWteS9EPsrRAnG8ImtZ5bBqSe6iTPqaGwd6wCA?= =?us-ascii?Q?+fbYmW7BsQyo2896xki6ZtAGu/VAMtnAm7fw2E9v31JkOQUOjSAA3NSp0cJV?= =?us-ascii?Q?3xb9qTDU6t3V3WEsRsqVQNh9NWMisoMHomKcFu7ALRKCgf0z21nKHSJFjQ76?= =?us-ascii?Q?4WhWMsq+AkanXNwT3sO40/0TOw/9Z28Z3GaGJfYKJ8yUGvBdqdPpih9kiiDb?= =?us-ascii?Q?zekUwwpht48C7Gs7wvrsKiaouo24zF7NWs4EwbjnBV07s5mJ3p1PHMr1P6NM?= =?us-ascii?Q?Ba4gDh0e1WXDyEa0LaQyC9hkb5Rt1XTQwNSS/S3r3/YX12B/f2yEsdjkXht7?= =?us-ascii?Q?De+oO8NNq/3n2HiTjz3vTSt1+IgGsjdIBJMGzxgdi3+2mazCrp/mMa8q44Yb?= =?us-ascii?Q?Lrnhmtb2c6rFGzFLpjGylhwQRabTdtZ9CXizwliR5JdvOQ+RngmaawM/3j0t?= =?us-ascii?Q?elks0HsH+sMPS8nXYmMcOt3MtXI7v7qlU6T+GnTDkPFqUYQzf6wyx0WTINyu?= =?us-ascii?Q?5FAO9tMhpe5/XjnbqIZZomFQ4pnsvN4oRTBEqOxFxjl2fkEyxPvqqMQ8vV1B?= =?us-ascii?Q?n8EooUe8zsVVnj6Ex4oQUSbhl6NHj0JpUTfXcU8J91ybDGwQcvSr0gQUgMo2?= =?us-ascii?Q?SgQdl5Sfgzl8553fhQpGHgVbalqNB+Yk42jYCjNpHd5r8zKtzGNlvxDjyNiP?= =?us-ascii?Q?YInrljwJuEentdJcSlnez6+MNw2BxDgXHBPFOp/i7/bj5R7xuIhQLveGDPmN?= =?us-ascii?Q?5AUbICohUicBBOqJZ5kon3X3VwPjksre3SidxitgtJ1kqOgXe8JY4oSjh5jK?= =?us-ascii?Q?ae33mW32Dl8szbkIMKrPvYB/8R01BIhLVitOXsSJp2kPERr7BktTSMM9e+qW?= =?us-ascii?Q?VSYfWO0gJ15Y/9GiqWSLCsvUcNQLwlQr9FgJCtXe5fzy3yB2bRPoUrZwXCoH?= =?us-ascii?Q?E3DBrFHqGdCabMuQ+inL1Jr9X7TUaba4Qa2PMAlOLNl2nbpk5I6zYE8yOoVL?= =?us-ascii?Q?N8W1fnH5DUGBzMPo4pUXrdsuOoNwHA29VV46v+UUrKSJyMGJN24lMH+7uFuv?= =?us-ascii?Q?fe/hqCdybyMjJtz0yEo+STq9ec6MfGzZd2mO/FWAxh85nyuVa5fV+4sDO0nL?= =?us-ascii?Q?kC7JSwh1b9BMMXmbqGQZ1FmJfaqZYJDpjoFjNNutgSnM6Mlibz0Hfmx3yD/p?= =?us-ascii?Q?D/Q5gRNZd5NfXIsRoF33yGG15qJ2hxR8nHhOwMNZKzr9SZiLVOQ6/vod4e7T?= =?us-ascii?Q?bbRpJ1xXs16+tnoPpYaOW4HPb7gN7X7Lt0wvD3XpyHSWJBBQtBZ74OSHOk+S?= =?us-ascii?Q?wpIb6RBSW4c5wZKija2a55Ubw3HCyfTwboiC72sL5iFu6EiGcVG/3a2rQ0f+?= =?us-ascii?Q?OGhCDR7C9DglX1BuYDeH58xPtg3mZSx3ZiSUVwcCQJRgXjPdMdJNGui1R+Fn?= =?us-ascii?Q?RU3+6LKaFLS/J5i5QuORQNJ5vo3NFCxL1mLm155/bE9Odgef1lrnHKWvg937?= =?us-ascii?Q?DAbG9cnwrYrPsczPh9FLf7EH6ZYg5PZAi67Czdt/qXdByBJDBulBpW5YEBsb?= =?us-ascii?Q?T54Vsg=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)(7416014)(376014)(36860700013)(82310400026)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jan 2026 21:27:47.7814 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: efb19455-e75a-445f-78c4-08de547cedf3 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: SJ1PEPF000023D0.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7804 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 f7130a359768..c5f4c6fc7cc0 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, @@ -66,6 +67,32 @@ 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 { @@ -97,6 +124,7 @@ fn probe(pdev: &pci::Device, info: &Self::IdInfo) = -> impl PinInit