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[SCSI] sd: Support disks formatted with DIF Type 2

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Disks formatted with DIF Type 2 reject READ/WRITE 6/10/12/16 commands
when protection is enabled.  Only the 32-byte variants are supported.

Implement support for issusing 32-byte READ/WRITE and enable Type 2
drives in the protection type detection logic.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Martin K. Petersen
2009-09-20 16:49:38 -04:00
committed by James Bottomley
parent b4c2554d40
commit 4e7392ec58
3 changed files with 78 additions and 11 deletions
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3
include/scsi/scsi.h
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@@ -129,6 +129,9 @@ struct scsi_cmnd;
#define MI_REPORT_TARGET_PGS 0x0a
/* values for maintenance out */
#define MO_SET_TARGET_PGS 0x0a
/* values for variable length command */
#define READ_32 0x09
#define WRITE_32 0x0b
/* Values for T10/04-262r7 */
#define ATA_16 0x85 /* 16-byte pass-thru */