From patchwork Mon Apr 7 19:51:01 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 14041717 X-Patchwork-Delegate: kw@linux.com Received: from EUR05-DB8-obe.outbound.protection.outlook.com (mail-db8eur05on2078.outbound.protection.outlook.com [40.107.20.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 476A2256C90; Mon, 7 Apr 2025 19:52:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.20.78 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744055537; cv=fail; b=PbguWosLxlz/Tmp8I63+KcNZjNHS1eAlzixbpDGpHNJqoVL8XU91yS8L5993qCjS57xvWHZ2InmiCRROeb1/gffUN2fRf4O/OzYL1MZ0JrgNP1BhA89+IhG+nQ9vUYKdwwDTrppvBs6fMnGHXj/FS38SjGn5KMpr2j+hVMcU3Mo= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744055537; c=relaxed/simple; bh=Q75HpsG7AQZeyq/78WIzVSdGpQ6JBJuHxf6b6uNsmfE=; h=From:Date:Subject:Content-Type:Message-Id:References:In-Reply-To: To:Cc:MIME-Version; b=V/+6n82Q9kNQgBX8TJQ6I6kCNwLCdjworoHFvRwlPiC7XYw/yxpiclS0ShgYQ9p4wjoKXJVxJMSHhVyM4ZPJiwkAt9Ig1UbjB7TboGg9bOfrCjkUD3xnx87MqfW0F9/Uu3fO7Ilq3dgwVfeXAJZ5Rt2ZH6VcMiZmSpRd7GV6Nq4= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=fNtuPEvm; arc=fail smtp.client-ip=40.107.20.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="fNtuPEvm" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ypHZ8S3TNF7HQpIXRFvjoJSyvyfd4d+Yy0yniKndgvdJmUNCxBQUmsIHSFC51rBhmc2jM0v5jiEPXOIw0UrePl0Dezve/eXPex0ByzSYYQGrr4QRkB/w5Gz/GkSLUjS+22XHflhdq4u3tqYHHfFGLLljH9M0ONQkBlWgYDpnHXoHEJLPazXysugdM4QMz9YlknpkS9HQLZ1PciXFhhFx+jwGRxT/0Q7qTTgHznS25qLenBgIiFyeM6v0TEy73AICe8WOXagewT+fDvYGqla/lqbNHoseEp/ruPjy0nxnFvktELEubrBT9RMafwoUdqYs6wLoncBZblEngFltRHjjXQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=F8Qp5FfqRuQHFYCFtVEMJWoCYl4K1g4dfDwvdzdP/uM=; b=mktFofOzYEeE5xNcYY2LXJ7r6I9bsK6llZdNHBxSDklKTHOrtuKQw0huN9ho+zI9nHHVY2P7f5yDnvgxtdtFCoL1ra9+KF7YquYtEGL0RUXW1nA/ezPy9gsibvIYixnlpZ7kAF0UkG5WzFZcXYYxbFP26nZqASbwPAkhOj88E5DZtzAyJ7bs0wC+dlx6uhBTbSrwGhUYOLOi3+qqMi3fijNxgpZ/1gcExvpHrafNgeUACLD8akghaviJUcoq+m3FsFktZ1LYe65daClF0eIEwbZmBxGDJCHuLlnitMMH0Fdy4U4mN2b3LGvJjkXyfSn8MkAX9DL0Lj+FIv/HUe98ag== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=F8Qp5FfqRuQHFYCFtVEMJWoCYl4K1g4dfDwvdzdP/uM=; b=fNtuPEvm2G8kHCGS3shUXjG9PS4ygnYCKMfWM1Xs1fT/pizXQVO6CqFkIK20appS1fYcyD7F7xWl/oOc7pl25mopfFtXOKBN+bWCkep+OiyDq7CWCtGtqV4l9GZchM1JEWl4zFLSUG3VBbhB9ksFnzC2OqfQ3Uh8eqsQi5wpMZJ7/pv0QEiRs9R9S4daYpOND7IRvrA3w3DHNU9cIVbyracHeLnH7C5LE4aINybIUITMua5H6cSDCqq2uk4DfZuOTcDnsTKS4TFOv27bk7cKdUwaNuTj+YJQTIr51N2xI8s3wdL3nqvmzLPHOEordqwyAvb1qlcgHi9ooOg0IMq+cw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by PR3PR04MB7452.eurprd04.prod.outlook.com (2603:10a6:102:80::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8606.34; Mon, 7 Apr 2025 19:52:12 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::9126:a61e:341d:4b06]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::9126:a61e:341d:4b06%2]) with mapi id 15.20.8606.029; Mon, 7 Apr 2025 19:52:12 +0000 From: Frank Li Date: Mon, 07 Apr 2025 15:51:01 -0400 Subject: [PATCH v17 11/15] misc: pci_endpoint_test: Add doorbell test case Message-Id: <20250407-ep-msi-v17-11-633ab45a31d0@nxp.com> References: <20250407-ep-msi-v17-0-633ab45a31d0@nxp.com> In-Reply-To: <20250407-ep-msi-v17-0-633ab45a31d0@nxp.com> To: Kishon Vijay Abraham I , "Rafael J. Wysocki" , Thomas Gleixner , Anup Patel , Kishon Vijay Abraham I , Marc Zyngier , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Manivannan Sadhasivam , =?utf-8?q?Krzysz?= =?utf-8?q?tof_Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Bjorn Helgaas , Arnd Bergmann , Shuah Khan , Richard Zhu , Lucas Stach , Lorenzo Pieralisi , Rob Herring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Krzysztof Kozlowski , Conor Dooley Cc: Niklas Cassel , dlemoal@kernel.org, jdmason@kudzu.us, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kselftest@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org, Frank Li X-Mailer: b4 0.13-dev-e586c X-Developer-Signature: v=1; a=ed25519-sha256; t=1744055468; l=6407; i=Frank.Li@nxp.com; s=20240130; h=from:subject:message-id; bh=Q75HpsG7AQZeyq/78WIzVSdGpQ6JBJuHxf6b6uNsmfE=; b=mliM/Q5aCS4NzJ3tRmVPyAgxfZb08QVmxcdVK3+/7GN+kHsiKzL6RdwWBwR67l+FHZ6cj5kYa O1H4DMIdy/VBBUITOGa1aKQZ4CVFLMAl1GZvxTFjenin0AUWpqx1R3x X-Developer-Key: i=Frank.Li@nxp.com; a=ed25519; pk=I0L1sDUfPxpAkRvPKy7MdauTuSENRq+DnA+G4qcS94Q= X-ClientProxiedBy: AS4P189CA0041.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:5dd::15) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|PR3PR04MB7452:EE_ X-MS-Office365-Filtering-Correlation-Id: 27ef522e-e225-4968-7a6d-08dd760db027 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|52116014|366016|1800799024|38350700014|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?q?Dtm45raXaejGSBX3UgfSVlvXEvH8ZTl?= =?utf-8?q?tQQOzfYIhO7fLH+AtKs9B4K76OOmJaZHWBVtXekW3D1XbmMFbJN+MQhHVl+JCDeBs?= =?utf-8?q?/aeYRz6cSYCUQnTyQI/bBD25OOB+TPGjX+l9SOb+tGO0NZvCRrp32qltnq/Yaqzt/?= =?utf-8?q?VGWW/Bb1Xo5lZdbn4/ulyxjVlzg+y2pNZCsysYgh7P4P0NToR0vXiimGmO9LnNdGW?= =?utf-8?q?Uyr7VcXuRif/jkB1TEQkd/Kgah84gZECfq2nAj7cBU5v8D+285D3WhrjjbCTcIhD+?= =?utf-8?q?BsYJ/JbQtXMXWUQNNFrJUAAFvq4A6lsBMDXohqimBHFdKY2k1ucofBR24qGt1WWYk?= =?utf-8?q?rWzSGfX05E7k8Iu29eeUitdPqhu8sNkX4RQSYmA4ocsGuRhgShe5PakopK+OBTtJh?= =?utf-8?q?HDTu8KU5gGjxHz8WezhBceXNgOzXsfFf1lcWMB+dQDsqkXDM3z3Dyzrl/uOrOS901?= =?utf-8?q?itiMELT21HXMt8ln6vo7b4ZtkMf2GwWrWZ7TJV/JJBu5IQSSMucZ+2IqSGq2Zlwh4?= =?utf-8?q?dsg1/QyNg01OPVxuVol1Kah3cNxdmuBewarLWQpDNOdk58Peu8LtxKkkbYoXhWc6B?= =?utf-8?q?JHecLxGftnefFdcqdB1zyu/YrMEVDIKtuywEax+MfvtbyV456X3PH6YzEazNiZV0Z?= =?utf-8?q?B6bqpimiYlCJlYy5+QjgqtwsNVnBJ6u5QhC6PWSO98vDOaV/drS3ttcKeZM78hMKm?= =?utf-8?q?L+n9CuDAnrGsdlWCP++wtw8vB0hdc2BBTY9nVTjgoz1Q/EjQnjorbKNvMxVHKQUqP?= =?utf-8?q?WIb2wyzVcm3F5bleBBMIloNyKfDcj4XIcmgEdCzapiA3rZ7Rmd2KsV5gRqnPRSS7k?= =?utf-8?q?u8wjhB5JGpulAlSOmnc1r1KFwPDI4/UdLl+7hTCwMVfP5s6ECWZ3lpfjAoQlhzR+L?= =?utf-8?q?rzgJNYs19m9b+f78DvCLWSHarIiFDFpNsE90P0JMzK8l6JIMu0Of6S8Drnrdwlz0i?= =?utf-8?q?KfuFYvIXhidLD3qBZnm3JgsUHq76gv75eIM6bcLsq7Sp9maEcq0LcJPSIINxHKgr0?= =?utf-8?q?WBhsKvteq5aKKDZ6ZstSPuH8s0+VzbyFFCiPRiSuCvRnRqVuH1r1W+w6d4mkCes38?= =?utf-8?q?WaF2wwE/YpT6sc5+LuJWViW0qNK5nZQtYnufj1Dm3MS+1rZ1OlEAFxA8MxYbUrCDa?= =?utf-8?q?CsezVJfnelBQNHrQjvoiPiAS7KiO/Iq0fJmrl0FLlK2ZhEI2cCr+ZqSB+PR3sZtQ8?= =?utf-8?q?Zs4lwUD9z4GLIgbZI2Ivpxdo1aYdyiFZblhAoZ5MyO87T9zco5uoNaX54s4oysR1H?= =?utf-8?q?MWnGTxXO5wGamE4Tzxh5+j6urWd7zVZx4DvmLihfIeN6mGiGaYlDkcuDelLGXqIqL?= =?utf-8?q?X7cC+R5ZN5rV2jWOAUm1c6nnoJV3LaUlS/AshbHZT6Goo+P6kVTgLP2LJc2KXpMWD?= =?utf-8?q?4DU+zD0wLs0OsZz0cxgPANevmS/fr1GHg=3D=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PAXPR04MB9642.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(7416014)(52116014)(366016)(1800799024)(38350700014)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?q?P9Xdfw+2WV7j6qP19s5eMnvB4yYx?= =?utf-8?q?s+XydcicYG0iL0O7SWE4l2lC4lXHy3RIv6Ij+t0Nj3x5dX028Vj6kvWdFleybHHBN?= =?utf-8?q?L9mx69tszE2mEFd0ugUvMl6eYCfPYiYqrS5PYtr9wEpfB35/Efb7WQ87NudC51a73?= =?utf-8?q?Y4ptUU0U67Tla8dkGdVaM+v5A2qCxdWcYpuLRkGsODJGTdD0Xaq/ein7cnC0lgfJC?= =?utf-8?q?MY4Y1XPjjpwcfE6qQtcbpI2XazjYjgg21YYFqS16fpdjXwaTaBP4Ys75GH6L6jv9q?= =?utf-8?q?EOOk9k3ljlq/lfIw1BmYOPYI5RLNiIttYMxPHnbijhdXbXcYNnwyGz1StnNkW2Q36?= =?utf-8?q?B0gb1qfGLMhY8Lc39EmZNH1K9ztTDIxl1j4keHlscALr/I2eqdAzrtFlcjZ4WDQf4?= =?utf-8?q?Fi5df1gRDgvlk+1PZabDNmHCv0uwRAu3QN2Y+gnnMzac97kxcXsBNddBKTW6hwYTE?= =?utf-8?q?c2hLc7NvAXaGqSnwPl6NVwm+cuXzXMYfavfnlwgAp+d24cd0NAJOghTsXzx1RDM+y?= =?utf-8?q?dE3asBOew9pu9dmDzurAXFDWSY91zBZnRrR0l703coanzBNx6XDro+6WxSTbeckrr?= =?utf-8?q?0bzT/PmJSAOUdQVa1cAYhfJ9k0uTcn5nb8usus1O1WxqZyz4ufb2Y+FYN2Klszig0?= =?utf-8?q?HXofiZ2hpCLu28W+s7P66U1YZc60U82RlQPOBzsO4KQykA/I4tLjOv30qOYNJvhQx?= =?utf-8?q?m9oTDwmCGlqjMXAGCuWW/g+7+2MMjG+sPMOWtqRMVUi3bPyorxTxB4qSRAT5bXynt?= =?utf-8?q?7IrzFML7sw6liLERNikVG2h6cQcolePBtZhxMsixAF9QorT3Z5qUS4YGsz0fb64LG?= =?utf-8?q?Q8lOS7lfn/SovfmTLqp/6i7NcXLyUwJ8j5Z/Q/3iY/pn2ZB5fRJNoWrppW6Mnz6ZE?= =?utf-8?q?YAeHGq0ZrNgLl6ofL6gqgRJhNCP4cOsZOZ3pPnqhcBH1b7NUxxfdsxzmpoQlKwZBP?= =?utf-8?q?E+4CAdFgM58vIr7Xv+Zm58xvyUaLs1YWMZplq2P3G6bOP5ZzrSje71iSadTPtT7+H?= =?utf-8?q?bxT2D2TmEzRHQPcrLOLM+TQrvLOBHfqZQudMBD2rzamC0/73fINpQ7pYAWMYNGta0?= =?utf-8?q?+OaRnNKIdfSmesXuU+fSkQAkDWAYwbYJa3ha17csugprpgANhYduYvNrwMlneri0E?= =?utf-8?q?P1pIZw2nX9DiX1Qr8a8KiYRa62OL3pW9AVbVt49eh4FAfLnVKaV4CC/nDK0E5YTNH?= =?utf-8?q?5Y97qnJbu4a1uYF7zlaUPN+4AoIRSEw7HstANqpqYkFycIzGZIh8o4Y6w8f/CaAki?= =?utf-8?q?SFa7Z9eCeLamb8jtJqbz50gjJEO6+Njch451xU0CEJkN8ZI+y+OieK+yTPkZlBLCn?= =?utf-8?q?amInGG6GjbrpKh3rCSGQ+28USlutjChfE6sCtnLLkDJoXQGkJs3dI3yRp9j8f/JrC?= =?utf-8?q?+P4IhaLfsuTnyQbdv2mRV9v+Tpp3qwpJlfKK2aCYWZT+oKRET4hypfsn2tMt/r9KS?= =?utf-8?q?2KUu8V/nz7f6KGmEkfWTDS6fAhnPuJtiyv32U5hfOzf1T/maDwXpZPA37HTvzxHqi?= =?utf-8?q?rj4WBHM6T5h7?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 27ef522e-e225-4968-7a6d-08dd760db027 X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Apr 2025 19:52:11.9916 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: l6lPVb/KUVV5euzsVhpr6Wi/9jfQ79Nhvg2L4FhfN4jhKxHNwM7oRXsSQvcAhona6t35HoZRsTDlgN9ESikH7A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR3PR04MB7452 Add three registers: PCIE_ENDPOINT_TEST_DB_BAR, PCIE_ENDPOINT_TEST_DB_ADDR, and PCIE_ENDPOINT_TEST_DB_DATA. Trigger the doorbell by writing data from PCI_ENDPOINT_TEST_DB_DATA to the address provided by PCI_ENDPOINT_TEST_DB_OFFSET and wait for endpoint feedback. Add two command to COMMAND_ENABLE_DOORBELL and COMMAND_DISABLE_DOORBELL to enable EP side's doorbell support and avoid compatible problem, which host side driver miss-match with endpoint side function driver. See below table: Host side new driver Host side old driver EP: new driver S F EP: old driver F F S: If EP side support MSI, 'pci_endpoint_test -f pcie_ep_doorbell' return success. If EP side doesn't support MSI, the same to 'F'. F: 'pci_endpoint_test -f pcie_ep_doorbell' return failure, other case as usual. Tested-by: Niklas Cassel Signed-off-by: Frank Li --- change from v14 to v16 - none Change from v13 to v14 - update to use pci_endpoint_test -f pcie_ep_doorbell - change ioctrl id to fix conflict Change from v9 to v13 - none Change from v8 to v9 - change PCITEST_DOORBELL to 0xa Change form v6 to v8 - none Change from v5 to v6 - %s/PCI_ENDPOINT_TEST_DB_ADDR/PCI_ENDPOINT_TEST_DB_OFFSET/g Change from v4 to v5 - remove unused varible - add irq_type at pci_endpoint_test_doorbell(); change from v3 to v4 - Add COMMAND_ENABLE_DOORBELL and COMMAND_DISABLE_DOORBELL. - Remove new DID requirement. --- drivers/misc/pci_endpoint_test.c | 82 ++++++++++++++++++++++++++++++++++++++++ include/uapi/linux/pcitest.h | 1 + 2 files changed, 83 insertions(+) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index c4e5e2c977be2..0f3af7adea107 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -37,6 +37,8 @@ #define COMMAND_READ BIT(3) #define COMMAND_WRITE BIT(4) #define COMMAND_COPY BIT(5) +#define COMMAND_ENABLE_DOORBELL BIT(6) +#define COMMAND_DISABLE_DOORBELL BIT(7) #define PCI_ENDPOINT_TEST_STATUS 0x8 #define STATUS_READ_SUCCESS BIT(0) @@ -48,6 +50,11 @@ #define STATUS_IRQ_RAISED BIT(6) #define STATUS_SRC_ADDR_INVALID BIT(7) #define STATUS_DST_ADDR_INVALID BIT(8) +#define STATUS_DOORBELL_SUCCESS BIT(9) +#define STATUS_DOORBELL_ENABLE_SUCCESS BIT(10) +#define STATUS_DOORBELL_ENABLE_FAIL BIT(11) +#define STATUS_DOORBELL_DISABLE_SUCCESS BIT(12) +#define STATUS_DOORBELL_DISABLE_FAIL BIT(13) #define PCI_ENDPOINT_TEST_LOWER_SRC_ADDR 0x0c #define PCI_ENDPOINT_TEST_UPPER_SRC_ADDR 0x10 @@ -62,6 +69,7 @@ #define PCI_ENDPOINT_TEST_IRQ_NUMBER 0x28 #define PCI_ENDPOINT_TEST_FLAGS 0x2c + #define FLAG_USE_DMA BIT(0) #define PCI_ENDPOINT_TEST_CAPS 0x30 @@ -70,6 +78,10 @@ #define CAP_MSIX BIT(2) #define CAP_INTX BIT(3) +#define PCI_ENDPOINT_TEST_DB_BAR 0x34 +#define PCI_ENDPOINT_TEST_DB_OFFSET 0x38 +#define PCI_ENDPOINT_TEST_DB_DATA 0x3c + #define PCI_DEVICE_ID_TI_AM654 0xb00c #define PCI_DEVICE_ID_TI_J7200 0xb00f #define PCI_DEVICE_ID_TI_AM64 0xb010 @@ -100,6 +112,7 @@ enum pci_barno { BAR_3, BAR_4, BAR_5, + NO_BAR = -1, }; struct pci_endpoint_test { @@ -841,6 +854,72 @@ static int pci_endpoint_test_set_irq(struct pci_endpoint_test *test, return 0; } +static int pci_endpoint_test_doorbell(struct pci_endpoint_test *test) +{ + struct pci_dev *pdev = test->pdev; + struct device *dev = &pdev->dev; + int irq_type = test->irq_type; + enum pci_barno bar; + u32 data, status; + u32 addr; + + if (irq_type < PCITEST_IRQ_TYPE_INTX || + irq_type > PCITEST_IRQ_TYPE_MSIX) { + dev_err(dev, "Invalid IRQ type option\n"); + return -EINVAL; + } + + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type); + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1); + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND, + COMMAND_ENABLE_DOORBELL); + + wait_for_completion_timeout(&test->irq_raised, msecs_to_jiffies(1000)); + + status = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS); + if (status & STATUS_DOORBELL_ENABLE_FAIL) { + dev_err(dev, "Failed to enable doorbell\n"); + return -EINVAL; + } + + data = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_DATA); + addr = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_OFFSET); + bar = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_BAR); + + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type); + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1); + + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_STATUS, 0); + + bar = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_BAR); + + writel(data, test->bar[bar] + addr); + + wait_for_completion_timeout(&test->irq_raised, msecs_to_jiffies(1000)); + + status = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS); + + if (!(status & STATUS_DOORBELL_SUCCESS)) + dev_err(dev, "Endpoint have not received Doorbell\n"); + + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND, + COMMAND_DISABLE_DOORBELL); + + wait_for_completion_timeout(&test->irq_raised, msecs_to_jiffies(1000)); + + status |= pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS); + + if (status & STATUS_DOORBELL_DISABLE_FAIL) { + dev_err(dev, "Failed to disable doorbell\n"); + return -EINVAL; + } + + if (!(status & STATUS_DOORBELL_SUCCESS)) + return -EINVAL; + + return 0; +} + static long pci_endpoint_test_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { @@ -891,6 +970,9 @@ static long pci_endpoint_test_ioctl(struct file *file, unsigned int cmd, case PCITEST_CLEAR_IRQ: ret = pci_endpoint_test_clear_irq(test); break; + case PCITEST_DOORBELL: + ret = pci_endpoint_test_doorbell(test); + break; } ret: diff --git a/include/uapi/linux/pcitest.h b/include/uapi/linux/pcitest.h index d3aa8715a525e..d6023a45a9d03 100644 --- a/include/uapi/linux/pcitest.h +++ b/include/uapi/linux/pcitest.h @@ -21,6 +21,7 @@ #define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int) #define PCITEST_GET_IRQTYPE _IO('P', 0x9) #define PCITEST_BARS _IO('P', 0xa) +#define PCITEST_DOORBELL _IO('P', 0xb) #define PCITEST_CLEAR_IRQ _IO('P', 0x10) #define PCITEST_IRQ_TYPE_UNDEFINED -1