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After a period of RFC for this driver, I think it is ready for inclusion in the platform-driver-x86 tree, hopefully to be staged in the next merge window into Linus's tree. --Vernon ------------------------------------------------------------ IBM Real-Time "SMI Free" mode driver This driver supports the Real-Time Linux (RTL) BIOS feature. The RTL feature allows non-fatal System Management Interrupts (SMIs) to be disabled on supported IBM platforms and is intended to be coupled with a user-space daemon to monitor the hardware in a way that can be prioritized and scheduled to better suit the requirements for the system. The Device is presented as a special "_RTL_" table to the OS in the Extended BIOS Data Area. There is a simple protocol for entering and exiting the mode at runtime. This driver creates a simple sysfs interface to allow a simple entry and exit from RTL mode in the UFI/BIOS. Since the driver is specific to IBM SystemX hardware (x86- based servers) it only builds on x86 builds. To reduce the risk of loading on the wrong hardware, the module uses DMI information and checks a list of servers that are known to work. Signed-off-by: Vernon Mauery <vernux@us.ibm.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
23 lines
817 B
Plaintext
23 lines
817 B
Plaintext
What: state
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Date: Sep 2010
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KernelVersion: 2.6.37
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Contact: Vernon Mauery <vernux@us.ibm.com>
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Description: The state file allows a means by which to change in and
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out of Premium Real-Time Mode (PRTM), as well as the
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ability to query the current state.
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0 => PRTM off
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1 => PRTM enabled
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Users: The ibm-prtm userspace daemon uses this interface.
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What: version
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Date: Sep 2010
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KernelVersion: 2.6.37
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Contact: Vernon Mauery <vernux@us.ibm.com>
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Description: The version file provides a means by which to query
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the RTL table version that lives in the Extended
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BIOS Data Area (EBDA).
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Users: The ibm-prtm userspace daemon uses this interface.
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