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sd: Physical block size and alignment support

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Extract physical block size and lowest aligned LBA from READ
CAPACITY(16) response and adjust queue parameters.

Report physical block size and alignment when applicable.

[jejb: fix up trailing whitespace]
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Martin K. Petersen 2009-05-23 11:43:37 -04:00 • committed by James Bottomley
parent c277331d5f
commit ea09bcc9c2
2 changed files with 22 additions and 2 deletions
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1
drivers/scsi/sd.h
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@ -45,6 +45,7 @@ struct scsi_disk {
unsigned int openers; /* protected by BKL for now, yuck */
sector_t capacity; /* size in 512-byte sectors */
u32 index;
unsigned short hw_sector_size;
u8 media_present;
u8 write_prot;
u8 protection_type;/* Data Integrity Field */