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This driver reads IBM Active Energy Manager energy/temperature/power sensors on IBM System X hardware. [akpm@linux-foundation.org: fix printk warnings] Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
38 lines
1.4 KiB
Plaintext
38 lines
1.4 KiB
Plaintext
Kernel driver ibmaem
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======================
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Supported systems:
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* Any recent IBM System X server with Active Energy Manager support.
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This includes the x3350, x3550, x3650, x3655, x3755, x3850 M2,
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x3950 M2, and certain HS2x/LS2x/QS2x blades. The IPMI host interface
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driver ("ipmi-si") needs to be loaded for this driver to do anything.
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Prefix: 'ibmaem'
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Datasheet: Not available
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Author: Darrick J. Wong
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Description
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-----------
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This driver implements sensor reading support for the energy and power
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meters available on various IBM System X hardware through the BMC. All
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sensor banks will be exported as platform devices; this driver can talk
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to both v1 and v2 interfaces. This driver is completely separate from the
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older ibmpex driver.
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The v1 AEM interface has a simple set of features to monitor energy use.
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There is a register that displays an estimate of raw energy consumption
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since the last BMC reset, and a power sensor that returns average power
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use over a configurable interval.
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The v2 AEM interface is a bit more sophisticated, being able to present
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a wider range of energy and power use registers, the power cap as
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set by the AEM software, and temperature sensors.
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Special Features
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----------------
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The "power_cap" value displays the current system power cap, as set by
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the Active Energy Manager software. Setting the power cap from the host
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is not currently supported.
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