Commit | Line | Data |
---|---|---|
8808a793 | 1 | Kernel driver ibmaem |
b04f2f7d | 2 | ==================== |
8808a793 | 3 | |
eb93b7df DW |
4 | This driver talks to the IBM Systems Director Active Energy Manager, known |
5 | henceforth as AEM. | |
6 | ||
8808a793 | 7 | Supported systems: |
b04f2f7d | 8 | |
eb93b7df | 9 | * Any recent IBM System X server with AEM support. |
b04f2f7d | 10 | |
8808a793 | 11 | This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, |
b04f2f7d MCC |
12 | x3950 M2, and certain HC10/HS2x/LS2x/QS2x blades. |
13 | ||
14 | The IPMI host interface | |
8808a793 | 15 | driver ("ipmi-si") needs to be loaded for this driver to do anything. |
b04f2f7d | 16 | |
8808a793 | 17 | Prefix: 'ibmaem' |
b04f2f7d | 18 | |
8808a793 DW |
19 | Datasheet: Not available |
20 | ||
21 | Author: Darrick J. Wong | |
22 | ||
23 | Description | |
24 | ----------- | |
25 | ||
eb93b7df DW |
26 | This driver implements sensor reading support for the energy and power meters |
27 | available on various IBM System X hardware through the BMC. All sensor banks | |
28 | will be exported as platform devices; this driver can talk to both v1 and v2 | |
29 | interfaces. This driver is completely separate from the older ibmpex driver. | |
8808a793 | 30 | |
eb93b7df DW |
31 | The v1 AEM interface has a simple set of features to monitor energy use. There |
32 | is a register that displays an estimate of raw energy consumption since the | |
33 | last BMC reset, and a power sensor that returns average power use over a | |
34 | configurable interval. | |
8808a793 | 35 | |
eb93b7df DW |
36 | The v2 AEM interface is a bit more sophisticated, being able to present a wider |
37 | range of energy and power use registers, the power cap as set by the AEM | |
38 | software, and temperature sensors. | |
8808a793 DW |
39 | |
40 | Special Features | |
41 | ---------------- | |
42 | ||
eb93b7df DW |
43 | The "power_cap" value displays the current system power cap, as set by the AEM |
44 | software. Setting the power cap from the host is not currently supported. |