| Kernel driver ibmaem |
| ====================== |
| |
| This driver talks to the IBM Systems Director Active Energy Manager, known |
| henceforth as AEM. |
| |
| Supported systems: |
| * Any recent IBM System X server with AEM support. |
| This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, |
| x3950 M2, and certain HC10/HS2x/LS2x/QS2x blades. The IPMI host interface |
| driver ("ipmi-si") needs to be loaded for this driver to do anything. |
| Prefix: 'ibmaem' |
| Datasheet: Not available |
| |
| Author: Darrick J. Wong |
| |
| Description |
| ----------- |
| |
| This driver implements sensor reading support for the energy and power meters |
| available on various IBM System X hardware through the BMC. All sensor banks |
| will be exported as platform devices; this driver can talk to both v1 and v2 |
| interfaces. This driver is completely separate from the older ibmpex driver. |
| |
| The v1 AEM interface has a simple set of features to monitor energy use. There |
| is a register that displays an estimate of raw energy consumption since the |
| last BMC reset, and a power sensor that returns average power use over a |
| configurable interval. |
| |
| The v2 AEM interface is a bit more sophisticated, being able to present a wider |
| range of energy and power use registers, the power cap as set by the AEM |
| software, and temperature sensors. |
| |
| Special Features |
| ---------------- |
| |
| The "power_cap" value displays the current system power cap, as set by the AEM |
| software. Setting the power cap from the host is not currently supported. |