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Commit | Line | Data |
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8808a793 DW |
1 | Kernel driver ibmaem |
2 | ====================== | |
3 | ||
4 | Supported systems: | |
5 | * Any recent IBM System X server with Active Energy Manager support. | |
6 | This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, | |
7 | x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface | |
8 | driver ("ipmi-si") needs to be loaded for this driver to do anything. | |
9 | Prefix: 'ibmaem' | |
10 | Datasheet: Not available | |
11 | ||
12 | Author: Darrick J. Wong | |
13 | ||
14 | Description | |
15 | ----------- | |
16 | ||
17 | This driver implements sensor reading support for the energy and power | |
18 | meters available on various IBM System X hardware through the BMC. All | |
19 | sensor banks will be exported as platform devices; this driver can talk | |
20 | to both v1 and v2 interfaces. This driver is completely separate from the | |
21 | older ibmpex driver. | |
22 | ||
23 | The v1 AEM interface has a simple set of features to monitor energy use. | |
24 | There is a register that displays an estimate of raw energy consumption | |
25 | since the last BMC reset, and a power sensor that returns average power | |
26 | use over a configurable interval. | |
27 | ||
28 | The v2 AEM interface is a bit more sophisticated, being able to present | |
29 | a wider range of energy and power use registers, the power cap as | |
30 | set by the AEM software, and temperature sensors. | |
31 | ||
32 | Special Features | |
33 | ---------------- | |
34 | ||
35 | The "power_cap" value displays the current system power cap, as set by | |
36 | the Active Energy Manager software. Setting the power cap from the host | |
37 | is not currently supported. |