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author | Shivasharan S <shivasharan.srikanteshwara@broadcom.com> | 2017-02-10 00:59:12 -0800 |
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committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-13 07:26:22 -0500 |
commit | 33203bc4d61b33f1f7bb736eac0c6fdd20b92397 (patch) | |
tree | 116b7774c708ece4fdcc28071363520297fe8a32 /drivers/scsi/megaraid/megaraid_sas_fp.c | |
parent | 96188a89cc6d5ad3a0a5b7a6c4abc9f4a6de7678 (diff) | |
download | linux-stable-33203bc4d61b33f1f7bb736eac0c6fdd20b92397.tar.gz linux-stable-33203bc4d61b33f1f7bb736eac0c6fdd20b92397.tar.bz2 linux-stable-33203bc4d61b33f1f7bb736eac0c6fdd20b92397.zip |
scsi: megaraid_sas: NVME fast path io support
This patch provide true fast path IO support. Driver creates PRP for
NVME drives and send Fast Path for performance. Certain h/w requirement
needs to be taken care in driver.
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.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_fp.c')
-rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fp.c | 55 |
1 files changed, 34 insertions, 21 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c index 24258afb207f..c3ef82ddcc0f 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fp.c +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -155,6 +155,11 @@ __le16 MR_PdDevHandleGet(u32 pd, struct MR_DRV_RAID_MAP_ALL *map) return map->raidMap.devHndlInfo[pd].curDevHdl; } +static u8 MR_PdInterfaceTypeGet(u32 pd, struct MR_DRV_RAID_MAP_ALL *map) +{ + return map->raidMap.devHndlInfo[pd].interfaceType; +} + u16 MR_GetLDTgtId(u32 ld, struct MR_DRV_RAID_MAP_ALL *map) { return le16_to_cpu(map->raidMap.ldSpanMap[ld].ldRaid.targetId); @@ -929,6 +934,7 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld, u8 retval = TRUE; u64 *pdBlock = &io_info->pdBlock; __le16 *pDevHandle = &io_info->devHandle; + u8 *pPdInterface = &io_info->pd_interface; u32 logArm, rowMod, armQ, arm; struct fusion_context *fusion; @@ -960,15 +966,18 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld, if (pd != MR_PD_INVALID) { *pDevHandle = MR_PdDevHandleGet(pd, map); + *pPdInterface = MR_PdInterfaceTypeGet(pd, map); /* get second pd also for raid 1/10 fast path writes*/ - if (raid->level == 1) { + if (instance->is_ventura && + (raid->level == 1) && + !io_info->isRead) { r1_alt_pd = MR_ArPdGet(arRef, physArm + 1, map); if (r1_alt_pd != MR_PD_INVALID) io_info->r1_alt_dev_handle = MR_PdDevHandleGet(r1_alt_pd, map); } } else { - *pDevHandle = cpu_to_le16(MR_PD_INVALID); + *pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID); if ((raid->level >= 5) && ((fusion->adapter_type == THUNDERBOLT_SERIES) || ((fusion->adapter_type == INVADER_SERIES) && @@ -977,8 +986,10 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld, else if (raid->level == 1) { physArm = physArm + 1; pd = MR_ArPdGet(arRef, physArm, map); - if (pd != MR_PD_INVALID) + if (pd != MR_PD_INVALID) { *pDevHandle = MR_PdDevHandleGet(pd, map); + *pPdInterface = MR_PdInterfaceTypeGet(pd, map); + } } } @@ -1025,6 +1036,7 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow, u8 retval = TRUE; u64 *pdBlock = &io_info->pdBlock; __le16 *pDevHandle = &io_info->devHandle; + u8 *pPdInterface = &io_info->pd_interface; struct fusion_context *fusion; fusion = instance->ctrl_context; @@ -1070,16 +1082,19 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow, if (pd != MR_PD_INVALID) { /* Get dev handle from Pd. */ *pDevHandle = MR_PdDevHandleGet(pd, map); + *pPdInterface = MR_PdInterfaceTypeGet(pd, map); /* get second pd also for raid 1/10 fast path writes*/ - if (raid->level == 1) { + if (instance->is_ventura && + (raid->level == 1) && + !io_info->isRead) { r1_alt_pd = MR_ArPdGet(arRef, physArm + 1, map); if (r1_alt_pd != MR_PD_INVALID) io_info->r1_alt_dev_handle = - MR_PdDevHandleGet(r1_alt_pd, map); + MR_PdDevHandleGet(r1_alt_pd, map); } } else { /* set dev handle as invalid. */ - *pDevHandle = cpu_to_le16(MR_PD_INVALID); + *pDevHandle = cpu_to_le16(MR_DEVHANDLE_INVALID); if ((raid->level >= 5) && ((fusion->adapter_type == THUNDERBOLT_SERIES) || ((fusion->adapter_type == INVADER_SERIES) && @@ -1089,9 +1104,11 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow, /* Get alternate Pd. */ physArm = physArm + 1; pd = MR_ArPdGet(arRef, physArm, map); - if (pd != MR_PD_INVALID) + if (pd != MR_PD_INVALID) { /* Get dev handle from Pd */ *pDevHandle = MR_PdDevHandleGet(pd, map); + *pPdInterface = MR_PdInterfaceTypeGet(pd, map); + } } } @@ -1509,11 +1526,11 @@ void mr_update_load_balance_params(struct MR_DRV_RAID_MAP_ALL *drv_map, } u8 megasas_get_best_arm_pd(struct megasas_instance *instance, - struct LD_LOAD_BALANCE_INFO *lbInfo, struct IO_REQUEST_INFO *io_info) + struct LD_LOAD_BALANCE_INFO *lbInfo, + struct IO_REQUEST_INFO *io_info, + struct MR_DRV_RAID_MAP_ALL *drv_map) { - struct fusion_context *fusion; struct MR_LD_RAID *raid; - struct MR_DRV_RAID_MAP_ALL *drv_map; u16 pd1_dev_handle; u16 pend0, pend1, ld; u64 diff0, diff1; @@ -1527,9 +1544,6 @@ u8 megasas_get_best_arm_pd(struct megasas_instance *instance, >> RAID_CTX_SPANARM_SPAN_SHIFT); arm = (io_info->span_arm & RAID_CTX_SPANARM_ARM_MASK); - - fusion = instance->ctrl_context; - drv_map = fusion->ld_drv_map[(instance->map_id & 1)]; ld = MR_TargetIdToLdGet(io_info->ldTgtId, drv_map); raid = MR_LdRaidGet(ld, drv_map); span_row_size = instance->UnevenSpanSupport ? @@ -1544,7 +1558,7 @@ u8 megasas_get_best_arm_pd(struct megasas_instance *instance, pd1_dev_handle = MR_PdDevHandleGet(pd1, drv_map); - if (pd1_dev_handle == MR_PD_INVALID) { + if (pd1_dev_handle == MR_DEVHANDLE_INVALID) { bestArm = arm; } else { /* get the pending cmds for the data and mirror arms */ @@ -1581,19 +1595,18 @@ u8 megasas_get_best_arm_pd(struct megasas_instance *instance, } __le16 get_updated_dev_handle(struct megasas_instance *instance, - struct LD_LOAD_BALANCE_INFO *lbInfo, struct IO_REQUEST_INFO *io_info) + struct LD_LOAD_BALANCE_INFO *lbInfo, + struct IO_REQUEST_INFO *io_info, + struct MR_DRV_RAID_MAP_ALL *drv_map) { u8 arm_pd; __le16 devHandle; - struct fusion_context *fusion; - struct MR_DRV_RAID_MAP_ALL *drv_map; - - fusion = instance->ctrl_context; - drv_map = fusion->ld_drv_map[(instance->map_id & 1)]; /* get best new arm (PD ID) */ - arm_pd = megasas_get_best_arm_pd(instance, lbInfo, io_info); + arm_pd = megasas_get_best_arm_pd(instance, lbInfo, io_info, drv_map); devHandle = MR_PdDevHandleGet(arm_pd, drv_map); + io_info->pd_interface = MR_PdInterfaceTypeGet(arm_pd, drv_map); atomic_inc(&lbInfo->scsi_pending_cmds[arm_pd]); + return devHandle; } |