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Fri, 7 Jun 2024 03:21:19 -0700 From: Shravan Kumar Ramani To: Hans de Goede , Ilpo Jarvinen , Vadim Pasternak , "David Thompson" CC: Shravan Kumar Ramani , , Subject: [PATCH v3 1/4] Documentation/ABI: Add document for Mellanox PMC driver Date: Fri, 7 Jun 2024 06:21:11 -0400 Message-ID: <2714c0f2beddc19de3c08ddc0f9c43716884b0f2.1717755404.git.shravankr@nvidia.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002310:EE_|PH8PR12MB6937:EE_ X-MS-Office365-Filtering-Correlation-Id: aaf0e633-4225-47a4-8f45-08dc86db9bca X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|36860700004|1800799015|376005|82310400017; X-Microsoft-Antispam-Message-Info: KpbzggMBKrsDoU9XX78ftsDiDMbYB0CkiNyaRzt1NRVOw9bB0FQ98F6J2l4tA8g/PAsCaABKu3WSIL3Wmjc1tLUHDaYXfKqSkCISY2PEaAGBm3jeCdrgzxlS0OTZn0T6kbwrEgT+6g4iGuDwCGv7vcaFH7qMDY0ktISiaWNGesqkVqQnTLODLV07MNOivYdyFnBaZ+ULkV9vvqiz5Nt+BbI8P6UFb2waDsUhwygVXJlpyWXoGUs8vvXNBlNWFYprL/KnUcud3W2zh3g2mGi1adLnCcWeCxYoLpjX4iAN+FPEzVf7o19j1Z9MT+30r0Zh8VzfqJZRmn6XHDZOgCfhvHVf8ZYBXNwMH5FN6Lt650n4xjfBQATxvVtuIna1duaBZ3v9kPNTPdazPcI1rIhvHRovixvUtP6BeAUoH7KK5Bx4ABoXMqkgB/8Ya4LhWgjzntrP6WbpClrDe1R6YUoxTB2g1S8wRvMlMb/nfLXLDTISlYfQsUPyEx0+uCji4W8p4aLQ9cQe6lbgyOM7LOlp4EHq3TmDGkuXA3P+dftk3V6cj9TYK8Wng9aDYpgws5nKgLNfV8BNs4phcSE5Q+BsENGOK6k+7KS7+Nx8w54RIuutGeT5mOfci+Bs9zZTthgtczy4E2YCTZ5LsltUJGgp0Q9zbYI672X53sMtgY5YTUglE73U3A7dICeEzTTLwB40ffI2ETIggLqJM6vUNMMaByN/oXjWsS1F+5C9/EjTSursHgs+dbn9J7/zWJutCFTauwx0vvWtv+3nAPx5vSGDh6o/Xs6M7xIz5nGl/x7h3Pr/gL89jEfJZJLLs7megoSSAh6FSSIIUvvJAr7df8xtv94lMPHUvJz52XJ+5BQttg4LT+nxO2u2Iix6Du6ydsuHD42pbUa9h2uufeDY8cAIC0hEl1tVR0eUj7/Z/ss/auqCyABuBzQ471W6k0ausFew9WMb8G3kSjbTS01Gva+iKPNDzbSIRR5O5OyyaSFmSWr/6BPIJRC3OCrCEo3SMPvUf/fAydR1dRQgdCDPx7N9eabtpm1SQ4uYMU+zc/hETlFqgs4ZAofIQscxr/3fV9ej5i3dutwB4wkvBUjR62bNNwzxHWMJSIwellw2cWewJ75mo1OYAeEb3HBMGumn8XdlZL41i9k7BuDJjbDwCEKx+siWmEWKZRv5Fp/1qWR1X5uL3Tw3h0EXRgxIP7wIheodc1oC+UMcgVO02kzIdlWZku12uZLRJZNSJxy/7P5zWayOsiw4I9yn37eHOHuQsRWZslSShG6lx3dca6FSH8lSiIjaenJFHSiZAYz/Jz0gJMIOkreNsHtnTzeL5CDZEXo+sBdKrCJBYKC8rhPdPva7kwPpTxMTs8DTatPap0CTkpJKM2tgqjn607uNQb+luteL9szoXYTV93C5LR8Ti5Q+5A== 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:(13230031)(36860700004)(1800799015)(376005)(82310400017);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jun 2024 10:21:34.9314 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: aaf0e633-4225-47a4-8f45-08dc86db9bca 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: SJ1PEPF00002310.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6937 Document the sysfs interface for programming and monitoring the performance counters in various HW blocks of Mellanox BlueField-1, BlueField-2 and BlueField-3. Signed-off-by: Shravan Kumar Ramani Reviewed-by: David Thompson --- .../ABI/testing/sysfs-platform-mellanox-pmc | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-platform-mellanox-pmc diff --git a/Documentation/ABI/testing/sysfs-platform-mellanox-pmc b/Documentation/ABI/testing/sysfs-platform-mellanox-pmc new file mode 100644 index 000000000000..9f987c6410da --- /dev/null +++ b/Documentation/ABI/testing/sysfs-platform-mellanox-pmc @@ -0,0 +1,54 @@ +HID Driver Description +MLNXBFD0 mlxbf-pmc Performance counters (BlueField-1) +MLNXBFD1 mlxbf-pmc Performance counters (BlueField-2) +MLNXBFD2 mlxbf-pmc Performance counters (BlueField-3) + +What: /sys/bus/platform/devices//hwmon/hwmonX//event_list +Date: Dec 2020 +KernelVersion: 5.10 +Contact: "Shravan Kumar Ramani " +Description: + List of events supported by the counters in the specific block. + It is used to extract the event number or ID associated with + each event. + +What: /sys/bus/platform/devices//hwmon/hwmonX//event +Date: Dec 2020 +KernelVersion: 5.10 +Contact: "Shravan Kumar Ramani " +Description: + Event monitored by corresponding counter. This is used to + program or read back the event that should be or is currently + being monitored by counter. + +What: /sys/bus/platform/devices//hwmon/hwmonX//counter +Date: Dec 2020 +KernelVersion: 5.10 +Contact: "Shravan Kumar Ramani " +Description: + Counter value of the event being monitored. This is used to + read the counter value of the event which was programmed using + event. This is also used to clear or reset the counter value + by writing 0 to the counter sysfs. + +What: /sys/bus/platform/devices//hwmon/hwmonX//enable +Date: Dec 2020 +KernelVersion: 5.10 +Contact: "Shravan Kumar Ramani " +Description: + Start or stop counters. This is used to start the counters + for monitoring the programmed events and also to stop the + counters after the desired duration. Writing value 1 will + start all the counters in the block, and writing 0 will + stop all the counters together. + +What: /sys/bus/platform/devices//hwmon/hwmonX// +Date: Dec 2020 +KernelVersion: 5.10 +Contact: "Shravan Kumar Ramani " +Description: + Value of register. This is used to read or reset the registers + where various performance statistics are counted for each block. + Writing 0 to the sysfs will clear the counter, writing any other + value is not allowed. +