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| author | Chandrakanth Patil <chandrakanth.patil@broadcom.com> | 2019-06-25 16:34:29 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-27 00:07:35 -0400 |
| commit | 7fc557005c454fa053153ac0bf7c7c96f58dab4f (patch) | |
| tree | 076445eeb2b19fe6399a6789531f586caefe0639 /drivers/scsi/megaraid/megaraid_sas_fusion.h | |
| parent | 49f2bf1071f06a430920888ff2d1a89395a3b6b5 (diff) | |
| download | linux-7fc557005c454fa053153ac0bf7c7c96f58dab4f.tar.gz linux-7fc557005c454fa053153ac0bf7c7c96f58dab4f.tar.bz2 linux-7fc557005c454fa053153ac0bf7c7c96f58dab4f.zip | |
scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver
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>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index b50da3822aa0..ca32b2b72515 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -87,7 +87,8 @@ enum MR_RAID_FLAGS_IO_SUB_TYPE { MR_RAID_FLAGS_IO_SUB_TYPE_RMW_P = 3, MR_RAID_FLAGS_IO_SUB_TYPE_RMW_Q = 4, MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS = 6, - MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT = 7 + MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT = 7, + MR_RAID_FLAGS_IO_SUB_TYPE_R56_DIV_OFFLOAD = 8 }; /* @@ -151,12 +152,15 @@ struct RAID_CONTEXT_G35 { u16 timeout_value; /* 0x02 -0x03 */ u16 routing_flags; // 0x04 -0x05 routing flags u16 virtual_disk_tgt_id; /* 0x06 -0x07 */ - u64 reg_lock_row_lba; /* 0x08 - 0x0F */ + __le64 reg_lock_row_lba; /* 0x08 - 0x0F */ u32 reg_lock_length; /* 0x10 - 0x13 */ - union { - u16 next_lmid; /* 0x14 - 0x15 */ - u16 peer_smid; /* used for the raid 1/10 fp writes */ - } smid; + union { // flow specific + u16 rmw_op_index; /* 0x14 - 0x15, R5/6 RMW: rmw operation index*/ + u16 peer_smid; /* 0x14 - 0x15, R1 Write: peer smid*/ + u16 r56_arm_map; /* 0x14 - 0x15, Unused [15], LogArm[14:10], P-Arm[9:5], Q-Arm[4:0] */ + + } flow_specific; + u8 ex_status; /* 0x16 : OUT */ u8 status; /* 0x17 status */ u8 raid_flags; /* 0x18 resvd[7:6], ioSubType[5:4], @@ -247,6 +251,13 @@ union RAID_CONTEXT_UNION { #define RAID_CTX_SPANARM_SPAN_SHIFT (5) #define RAID_CTX_SPANARM_SPAN_MASK (0xE0) +/* LogArm[14:10], P-Arm[9:5], Q-Arm[4:0] */ +#define RAID_CTX_R56_Q_ARM_MASK (0x1F) +#define RAID_CTX_R56_P_ARM_SHIFT (5) +#define RAID_CTX_R56_P_ARM_MASK (0x3E0) +#define RAID_CTX_R56_LOG_ARM_SHIFT (10) +#define RAID_CTX_R56_LOG_ARM_MASK (0x7C00) + /* number of bits per index in U32 TrackStream */ #define BITS_PER_INDEX_STREAM 4 #define INVALID_STREAM_NUM 16 @@ -1336,6 +1347,7 @@ struct fusion_context { struct MPI2_IOC_INIT_REQUEST *ioc_init_request; struct megasas_cmd *ioc_init_cmd; bool pcie_bw_limitation; + bool r56_div_offload; }; union desc_value { |