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

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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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Martin K. Petersen 2008-07-17 04:28:34 -04:00 • committed by James Bottomley

parent 511e44f42e

commit e0597d7001

2 changed files with 141 additions and 4 deletions

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122

drivers/scsi/sd.c

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23

drivers/scsi/sd.h

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