Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / ABI / testing / sysfs-class-scsi_host

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+What:          /sys/class/scsi_host/hostX/isci_id
+Date:          June 2011
+Contact:       Dave Jiang <dave.jiang@intel.com>
+Description:
+               This file contains the enumerated host ID for the Intel
+               SCU controller. The Intel(R) C600 Series Chipset SATA/SAS
+               Storage Control Unit embeds up to two 4-port controllers in
+               a single PCI device.  The controllers are enumerated in order
+               which usually means the lowest number scsi_host corresponds
+               with the first controller, but this association is not
+               guaranteed.  The 'isci_id' attribute unambiguously identifies
+               the controller index: '0' for the first controller,
+               '1' for the second.
+
+What:          /sys/class/scsi_host/hostX/acciopath_status
+Date:          November 2013
+Contact:       Stephen M. Cameron <scameron@beardog.cce.hp.com>
+Description:   This file contains the current status of the "SSD Smart Path"
+               feature of HP Smart Array RAID controllers using the hpsa
+               driver.  SSD Smart Path, when enabled permits the driver to
+               send i/o requests directly to physical devices that are part
+               of a logical drive, bypassing the controllers firmware RAID
+               stack for a performance advantage when possible.  A value of
+               '1' indicates the feature is enabled, and the controller may
+               use the direct i/o path to physical devices.  A value of zero
+               means the feature is disabled and the controller may not use
+               the direct i/o path to physical devices.  This setting is
+               controller wide, affecting all configured logical drives on the
+               controller.  This file is readable and writable.