scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver

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For RAID5/RAID6 volumes configured behind Aero, driver will be doing 64bit
division operations on behalf of firmware as controller's ARM CPU is very
slow in this division. Later, driver calculates Q-ARM, P-ARM and Log-ARM and
passes those values to firmware by writing these values to RAID_CONTEXT.

Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Chandrakanth Patil 2019-06-25 16:34:29 +05:30 • committed by Martin K. Petersen

parent 49f2bf1071

commit 7fc557005c

4 changed files with 108 additions and 10 deletions

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10

drivers/scsi/megaraid/megaraid_sas_base.c

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78

drivers/scsi/megaraid/megaraid_sas_fp.c

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6

drivers/scsi/megaraid/megaraid_sas_fusion.c

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24

drivers/scsi/megaraid/megaraid_sas_fusion.h

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