1Kernel driver ibmaem 2==================== 3 4This driver talks to the IBM Systems Director Active Energy Manager, known 5henceforth as AEM. 6 7Supported systems: 8 9 * Any recent IBM System X server with AEM support. 10 11 This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2, 12 x3950 M2, and certain HC10/HS2x/LS2x/QS2x blades. 13 14 The IPMI host interface 15 driver ("ipmi-si") needs to be loaded for this driver to do anything. 16 17 Prefix: 'ibmaem' 18 19 Datasheet: Not available 20 21Author: Darrick J. Wong 22 23Description 24----------- 25 26This driver implements sensor reading support for the energy and power meters 27available on various IBM System X hardware through the BMC. All sensor banks 28will be exported as platform devices; this driver can talk to both v1 and v2 29interfaces. This driver is completely separate from the older ibmpex driver. 30 31The v1 AEM interface has a simple set of features to monitor energy use. There 32is a register that displays an estimate of raw energy consumption since the 33last BMC reset, and a power sensor that returns average power use over a 34configurable interval. 35 36The v2 AEM interface is a bit more sophisticated, being able to present a wider 37range of energy and power use registers, the power cap as set by the AEM 38software, and temperature sensors. 39 40Special Features 41---------------- 42 43The "power_cap" value displays the current system power cap, as set by the AEM 44software. Setting the power cap from the host is not currently supported. 45