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