From: Martin K. Petersen <martin.petersen@oracle.com>
Date: Thu, 17 Jul 2008 08:28:34 +0000 (-0400)
Subject: [SCSI] sd: Identify DIF protection type and application tag ownership
X-Git-Tag: v2.6.27-rc1~55^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0597d70012c82e16ee152270a55d89d8bf66693;p=pandora-kernel.git

[SCSI] sd: Identify DIF protection type and application tag ownership

If a disk is formatted with protection information (Inquiry bit
PROTECT=1) it is required to support Read Capacity(16).  Force use of
the 16-bit command in this case and extract the P_TYPE field which
indicates whether the disk is formatted using DIF Type 1, 2 or 3.

The ATO (App Tag Own) bit in the Control Mode Page indicates whether
the storage device or the initiator own the contents of the
DIF application tag.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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