13a7bda83SDave JiangWhat:		/sys/class/scsi_host/hostX/isci_id
23a7bda83SDave JiangDate:		June 2011
33a7bda83SDave JiangContact:	Dave Jiang <dave.jiang@intel.com>
43a7bda83SDave JiangDescription:
53a7bda83SDave Jiang		This file contains the enumerated host ID for the Intel
63a7bda83SDave Jiang		SCU controller. The Intel(R) C600 Series Chipset SATA/SAS
73a7bda83SDave Jiang		Storage Control Unit embeds up to two 4-port controllers in
83a7bda83SDave Jiang		a single PCI device.  The controllers are enumerated in order
93a7bda83SDave Jiang		which usually means the lowest number scsi_host corresponds
103a7bda83SDave Jiang		with the first controller, but this association is not
113a7bda83SDave Jiang		guaranteed.  The 'isci_id' attribute unambiguously identifies
123a7bda83SDave Jiang		the controller index: '0' for the first controller,
133a7bda83SDave Jiang		'1' for the second.
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