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Mon, 19 Jan 2026 12:23:26 -0800 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Zhi Wang Subject: [PATCH v10 5/5] sample: rust: pci: add tests for config space routines Date: Mon, 19 Jan 2026 22:22:47 +0200 Message-ID: <20260119202250.870588-6-zhiw@nvidia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260119202250.870588-1-zhiw@nvidia.com> References: <20260119202250.870588-1-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: SN1PEPF0002BA4B:EE_|SA1PR12MB5637:EE_ X-MS-Office365-Filtering-Correlation-Id: 4c8bc618-f80e-4f3f-dea8-08de5798aa8d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700013|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?8YfRuvRVg8wjDTty5u5NzT886RPsIFkth1ETHKOva+WevuvEAyP3N3Jy0/jp?= =?us-ascii?Q?6+cOGx1OW5xWsJRjQst+szbqH/OONDyFn5Q+lVTxHkf+vowNleSXOt3YK3gM?= =?us-ascii?Q?a5choCGmI+ShlhOXWm9dN1Edj4UnaRmf9vs/IecCMRL7b6aWJo5ghTj5+uPN?= =?us-ascii?Q?WWNYf5Y1404mJCQl+bZwtFqbhUDa0c9lLqrne12c+kT9/dGxf3bMoDqTN+Cz?= =?us-ascii?Q?XSUdHM8sMFAiEKo8zAikz3Q5B6saG42EQ7Qy7BHTt555iMwUKT4jcZn/Hg5K?= =?us-ascii?Q?QBUCrIY6i7qbc0tn81+rtLaF+p/Tu8iovcFeNEGONMQsAeO+g/iCjPrt+Bem?= =?us-ascii?Q?K8XsqXdvk+SOALQ5nB67BBNRmaZgjFbwai4ds8aGQQD+19GGgci04L1jy+Mv?= =?us-ascii?Q?VDIqFWZsIXwKH3oxa4N3Ojb74BG54t6/ngeqRE9rXWdus9a2PHhXnthkqRIN?= =?us-ascii?Q?CYhJpviuA+YZTvs6JOmiL7XKZZ7HmdLQXvyVELLI4BBrR69vmJ2EtAgwcoVx?= =?us-ascii?Q?gSsdNY59UNY/JaDF3E85gVdktgRqPujaYE+YgbWoDpuxdnccXNQ90Nr7X9C4?= =?us-ascii?Q?hJIMeUCeoEQG/UdCVTZvh5Mq70PszWCda6W2SL0xI6hurVEVDJuMBrPs6XyG?= =?us-ascii?Q?huhpJAPATQmW+xzwJ31G97VKUN5qZHi8IQeQu76hpkAMWeeW+wI1aqa8CH87?= =?us-ascii?Q?ds4VviI/MkW+1XLmY6ZDM/ZcK6IPZT5h/XUvWHGuoXcVnLA4+wS/0E82K1Xt?= =?us-ascii?Q?MtT400cM3EXdUfhL3ekQyJTXqjhwPg8jggkQis2wkdyVEBk70BwDXauLKGM2?= =?us-ascii?Q?NlAC+EruPy0aDWUikKF2HjVvEAwEg53nkMcfoj8H72KPce6blJFnuPccZgKz?= =?us-ascii?Q?r+1r4wLyMKE/fskGM/oTpRXXlmte+UHn5t1H51fLETT10E6O4AZSmXz5jZJR?= =?us-ascii?Q?yMc25T4mrtmrWmwx308uJNVYjLv3PUoo9iwGrGfqoyUfv5la6DiWhdLZ6o4R?= =?us-ascii?Q?OqJC3HSIC/nE+wMuPd6OdiMM08ySlXwpgOOXmUSwc9rBd716qmpiCSTr40cJ?= =?us-ascii?Q?GcWdV3IzXvOl1CyE7OcLFMn08YsiOxuuD1uG2BGQu79gslgCv1duoVJpJxS7?= =?us-ascii?Q?OlSBkgtmnzRd0Db3JfD3amzOfnlIvIa5SuG2tPMXNsP092H0CAbC733g7DZW?= =?us-ascii?Q?UHhRpt+wek4Iok8W2XkDYD6tTGrItCVSgK1hO2A85qvUGaaddYO/KLEIzuMQ?= =?us-ascii?Q?i8xaL4PZOue3KmixN6PXqQ4XFD1sheOSC5MzFshPOpSOUCFX7H8hs0MT2LLW?= =?us-ascii?Q?nwrwwTbCiqWVutwZhxaimFsrFlKfMLL/A605JhnfBj30G7WRo21kefOBVW7Y?= =?us-ascii?Q?AQxaVhN8LrXjymrX0KowiNGhI3VEcogTNmvdTEX7pLtzpWypYyeQe8N7Nppm?= =?us-ascii?Q?GpJSPHglrsRiXipeN0E5je+XyFfWmR2UWn/tT5xOF1uSkqR+tK1B5k2sHRwu?= =?us-ascii?Q?ltgkoi2WqC9sGVlHBBYeaAEAYF5Wpj4lYg/Vrd594WDB7gTom53ErMX/SznC?= =?us-ascii?Q?tODLHEdoNHWjUR9TlZfEospp8wLTFfZw5TAVzCc+F11qXkp//Xx8Xh6ITgvv?= =?us-ascii?Q?E0Ta0wWCAOnfNwvGzHzf5KYPXcz1hB4KLBMfr/2TGSMqj3T1SneKWQ7nDsoB?= =?us-ascii?Q?X/DC/w=3D=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(82310400026)(36860700013)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jan 2026 20:23:53.9647 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4c8bc618-f80e-4f3f-dea8-08de5798aa8d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002BA4B.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB5637 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 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