diff options
| author | Anand Lodnoor <anand.lodnoor@broadcom.com> | 2020-01-14 16:51:13 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-01-15 23:21:02 -0500 |
| commit | a7faf81d7858b504279713d6cb98053f0ff00082 (patch) | |
| tree | d8409e890df79cd1e43c810eab8c30f5ef55f24d /drivers/scsi | |
| parent | 499e7246d6daa7c2655958e81febfbd76af1bc75 (diff) | |
scsi: megaraid_sas: Set no_write_same only for Virtual Disk
Disable WRITE_SAME (no_write_same) for Virtual Disks only. For System PDs
and EPDs (Enhanced PDs), WRITE_SAME need not be disabled by default.
Link: https://lore.kernel.org/r/1579000882-20246-3-git-send-email-anand.lodnoor@broadcom.com
Signed-off-by: Anand Lodnoor <anand.lodnoor@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 5 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 17 |
2 files changed, 18 insertions, 4 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 6a01a605508b..167a3e5edc45 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -1887,6 +1887,10 @@ void megasas_set_dynamic_target_properties(struct scsi_device *sdev, mr_device_priv_data->is_tm_capable = raid->capability.tmCapable; + + if (!raid->flags.isEPD) + sdev->no_write_same = 1; + } else if (instance->use_seqnum_jbod_fp) { pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; @@ -3416,7 +3420,6 @@ static struct scsi_host_template megasas_template = { .bios_param = megasas_bios_param, .change_queue_depth = scsi_change_queue_depth, .max_segment_size = 0xffffffff, - .no_write_same = 1, }; /** diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index c013c80fe4e6..8358b68d6259 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -864,9 +864,20 @@ struct MR_LD_RAID { u8 regTypeReqOnRead; __le16 seqNum; - struct { - u32 ldSyncRequired:1; - u32 reserved:31; +struct { +#ifndef MFI_BIG_ENDIAN + u32 ldSyncRequired:1; + u32 regTypeReqOnReadIsValid:1; + u32 isEPD:1; + u32 enableSLDOnAllRWIOs:1; + u32 reserved:28; +#else + u32 reserved:28; + u32 enableSLDOnAllRWIOs:1; + u32 isEPD:1; + u32 regTypeReqOnReadIsValid:1; + u32 ldSyncRequired:1; +#endif } flags; u8 LUN[8]; /* 0x24 8 byte LUN field used for SCSI IO's */ |