diff options
Diffstat (limited to 'Documentation/hwmon/ibmaem')
-rw-r--r-- | Documentation/hwmon/ibmaem | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/Documentation/hwmon/ibmaem b/Documentation/hwmon/ibmaem index 2fefaf582a43..e98bdfea3467 100644 --- a/Documentation/hwmon/ibmaem +++ b/Documentation/hwmon/ibmaem | |||
@@ -1,8 +1,11 @@ | |||
1 | Kernel driver ibmaem | 1 | Kernel driver ibmaem |
2 | ====================== | 2 | ====================== |
3 | 3 | ||
4 | This driver talks to the IBM Systems Director Active Energy Manager, known | ||
5 | henceforth as AEM. | ||
6 | |||
4 | Supported systems: | 7 | Supported systems: |
5 | * Any recent IBM System X server with Active Energy Manager support. | 8 | * Any recent IBM System X server with AEM support. |
6 | This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, | 9 | This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, |
7 | x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface | 10 | 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. | 11 | driver ("ipmi-si") needs to be loaded for this driver to do anything. |
@@ -14,24 +17,22 @@ Author: Darrick J. Wong | |||
14 | Description | 17 | Description |
15 | ----------- | 18 | ----------- |
16 | 19 | ||
17 | This driver implements sensor reading support for the energy and power | 20 | This driver implements sensor reading support for the energy and power meters |
18 | meters available on various IBM System X hardware through the BMC. All | 21 | available on various IBM System X hardware through the BMC. All sensor banks |
19 | sensor banks will be exported as platform devices; this driver can talk | 22 | will be exported as platform devices; this driver can talk to both v1 and v2 |
20 | to both v1 and v2 interfaces. This driver is completely separate from the | 23 | interfaces. This driver is completely separate from the older ibmpex driver. |
21 | older ibmpex driver. | ||
22 | 24 | ||
23 | The v1 AEM interface has a simple set of features to monitor energy use. | 25 | The v1 AEM interface has a simple set of features to monitor energy use. There |
24 | There is a register that displays an estimate of raw energy consumption | 26 | is a register that displays an estimate of raw energy consumption since the |
25 | since the last BMC reset, and a power sensor that returns average power | 27 | last BMC reset, and a power sensor that returns average power use over a |
26 | use over a configurable interval. | 28 | configurable interval. |
27 | 29 | ||
28 | The v2 AEM interface is a bit more sophisticated, being able to present | 30 | The v2 AEM interface is a bit more sophisticated, being able to present a wider |
29 | a wider range of energy and power use registers, the power cap as | 31 | range of energy and power use registers, the power cap as set by the AEM |
30 | set by the AEM software, and temperature sensors. | 32 | software, and temperature sensors. |
31 | 33 | ||
32 | Special Features | 34 | Special Features |
33 | ---------------- | 35 | ---------------- |
34 | 36 | ||
35 | The "power_cap" value displays the current system power cap, as set by | 37 | The "power_cap" value displays the current system power cap, as set by the AEM |
36 | the Active Energy Manager software. Setting the power cap from the host | 38 | software. Setting the power cap from the host is not currently supported. |
37 | is not currently supported. | ||