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- 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.
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