| 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. |