diff options
| author | Sumit Saxena <sumit.saxena@avagotech.com> | 2016-01-28 21:04:27 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-02-23 21:27:02 -0500 |
| commit | 8f05024cd3dbd3ec85923f3e8da05bf6db187d57 (patch) | |
| tree | 2402b288fee1a4790d6fc277713f7c81d6a382ed /drivers/scsi/megaraid/megaraid_sas_fusion.h | |
| parent | 2216c30523b0a1835b6d522ffe73ca167f199f00 (diff) | |
megaraid_sas: Fastpath region lock bypass
Firmware will fill out per-LD data to tell driver whether a particular
LD supports region lock bypass. If yes, then driver will send non-FP
LDIO to region lock bypass FIFO. With this change in driver, firmware
will optimize certain code to improve performance.
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index a1f1c0b8400c..db0978d0fc88 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -643,7 +643,8 @@ struct MR_SPAN_BLOCK_INFO { struct MR_LD_RAID { struct { #if defined(__BIG_ENDIAN_BITFIELD) - u32 reserved4:6; + u32 reserved4:5; + u32 fpBypassRegionLock:1; u32 tmCapable:1; u32 fpNonRWCapable:1; u32 fpReadAcrossStripe:1; @@ -667,7 +668,8 @@ struct MR_LD_RAID { u32 fpReadAcrossStripe:1; u32 fpNonRWCapable:1; u32 tmCapable:1; - u32 reserved4:6; + u32 fpBypassRegionLock:1; + u32 reserved4:5; #endif } capability; __le32 reserved6; @@ -737,7 +739,7 @@ struct IO_REQUEST_INFO { u8 fpOkForIo; u8 IoforUnevenSpan; u8 start_span; - u8 reserved; + u8 do_fp_rlbypass; u64 start_row; u8 span_arm; /* span[7:5], arm[4:0] */ u8 pd_after_lb; |