[SCSI] hpsa: add ioaccell mode 1 RAID offload support.

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This enables sending i/o's destined for RAID logical drives
which can be serviced by a single physical disk down a different,
faster i/o path directly to physical drives for certain logical
volumes on SSDs bypassing the Smart Array RAID stack for a
performance improvement.

Signed-off-by: Matt Gates <matthew.gates@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Mike Miller <michael.miller@canonical.com>
Signed-off-by: Don Brace <brace@beardog.cce.hp.com>
Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

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Stephen M. Cameron 2014-02-18 13:55:33 -06:00 • committed by James Bottomley

parent 17eb87d216

commit 283b4a9b98

3 changed files with 607 additions and 49 deletions

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565

drivers/scsi/hpsa.c

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26

drivers/scsi/hpsa.h

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65

drivers/scsi/hpsa_cmd.h

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