Merge patch series "mpi3mr: Few Enhancements and minor fixes"

Ranjan Kumar <ranjan.kumar@broadcom.com> says:

Few Enhancements and minor fixes of mpi3mr driver.

Link: https://lore.kernel.org/r/20230804104248.118924-1-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

6 files changed, 177 insertions, 43 deletions

diff --git a/drivers/scsi/mpi3mr/mpi/mpi30_cnfg.h b/drivers/scsi/mpi3mr/mpi/mpi30_cnfg.h
index 2fc196499c89..35f81af40f51 100644
--- a/drivers/scsi/mpi3mr/mpi/mpi30_cnfg.h
+++ b/drivers/scsi/mpi3mr/mpi/mpi30_cnfg.h
@@ -1482,7 +1482,7 @@ struct mpi3_security_page0 {
 #define MPI3_SECURITY1_KEY_RECORD_MAX      1
 #endif
 #ifndef MPI3_SECURITY1_PAD_MAX
-#define MPI3_SECURITY1_PAD_MAX      1
+#define MPI3_SECURITY1_PAD_MAX      4
 #endif
 union mpi3_security1_key_data {
 	__le32                             dword[128];
diff --git a/drivers/scsi/mpi3mr/mpi/mpi30_ioc.h b/drivers/scsi/mpi3mr/mpi/mpi30_ioc.h
index f5e9c2309ce6..1e4a60fc655f 100644
--- a/drivers/scsi/mpi3mr/mpi/mpi30_ioc.h
+++ b/drivers/scsi/mpi3mr/mpi/mpi30_ioc.h
@@ -600,6 +600,7 @@ struct mpi3_event_data_pcie_error_threshold {
 	__le16                                 threshold_count;
 	__le16                                 attached_dev_handle;
 	__le16                                 reserved12;
+	__le32                                 reserved14;
 };
 
 #define MPI3_EVENT_PCI_ERROR_RC_THRESHOLD_EXCEEDED          (0x00)
diff --git a/drivers/scsi/mpi3mr/mpi/mpi30_transport.h b/drivers/scsi/mpi3mr/mpi/mpi30_transport.h
index 441cfc2c7f09..1e0a3dcaf723 100644
--- a/drivers/scsi/mpi3mr/mpi/mpi30_transport.h
+++ b/drivers/scsi/mpi3mr/mpi/mpi30_transport.h
@@ -18,7 +18,7 @@ union mpi3_version_union {
 
 #define MPI3_VERSION_MAJOR                                              (3)
 #define MPI3_VERSION_MINOR                                              (0)
-#define MPI3_VERSION_UNIT                                               (27)
+#define MPI3_VERSION_UNIT                                               (28)
 #define MPI3_VERSION_DEV                                                (0)
 #define MPI3_DEVHANDLE_INVALID                                          (0xffff)
 struct mpi3_sysif_oper_queue_indexes {
diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h
index 0afb687402e1..ae98d15c30b1 100644
--- a/drivers/scsi/mpi3mr/mpi3mr.h
+++ b/drivers/scsi/mpi3mr/mpi3mr.h
@@ -55,8 +55,8 @@ extern struct list_head mrioc_list;
 extern int prot_mask;
 extern atomic64_t event_counter;
 
-#define MPI3MR_DRIVER_VERSION	"8.4.1.0.0"
-#define MPI3MR_DRIVER_RELDATE	"16-March-2023"
+#define MPI3MR_DRIVER_VERSION	"8.5.0.0.0"
+#define MPI3MR_DRIVER_RELDATE	"24-July-2023"
 
 #define MPI3MR_DRIVER_NAME	"mpi3mr"
 #define MPI3MR_DRIVER_LICENSE	"GPL"
@@ -66,11 +66,12 @@ extern atomic64_t event_counter;
 #define MPI3MR_NAME_LENGTH	32
 #define IOCNAME			"%s: "
 
-#define MPI3MR_MAX_SECTORS	2048
+#define MPI3MR_DEFAULT_MAX_IO_SIZE	(1 * 1024 * 1024)
 
 /* Definitions for internal SGL and Chain SGL buffers */
 #define MPI3MR_PAGE_SIZE_4K		4096
-#define MPI3MR_SG_DEPTH		(MPI3MR_PAGE_SIZE_4K / sizeof(struct mpi3_sge_common))
+#define MPI3MR_DEFAULT_SGL_ENTRIES	256
+#define MPI3MR_MAX_SGL_ENTRIES		2048
 
 /* Definitions for MAX values for shost */
 #define MPI3MR_MAX_CMDS_LUN	128
@@ -206,6 +207,9 @@ extern atomic64_t event_counter;
  */
 #define MPI3MR_MAX_APP_XFER_SECTORS	(2048 + 512)
 
+#define MPI3MR_WRITE_SAME_MAX_LEN_256_BLKS 256
+#define MPI3MR_WRITE_SAME_MAX_LEN_2048_BLKS 2048
+
 /**
  * struct mpi3mr_nvme_pt_sge -  Structure to store SGEs for NVMe
  * Encapsulated commands.
@@ -323,6 +327,7 @@ struct mpi3mr_ioc_facts {
 	u16 max_perids;
 	u16 max_pds;
 	u16 max_sasexpanders;
+	u32 max_data_length;
 	u16 max_sasinitiators;
 	u16 max_enclosures;
 	u16 max_pcie_switches;
@@ -676,6 +681,7 @@ enum mpi3mr_dev_state {
  * @io_unit_port: IO Unit port ID
  * @non_stl: Is this device not to be attached with SAS TL
  * @io_throttle_enabled: I/O throttling needed or not
+ * @wslen: Write same max length
  * @q_depth: Device specific Queue Depth
  * @wwid: World wide ID
  * @enclosure_logical_id: Enclosure logical identifier
@@ -698,6 +704,7 @@ struct mpi3mr_tgt_dev {
 	u8 io_unit_port;
 	u8 non_stl;
 	u8 io_throttle_enabled;
+	u16 wslen;
 	u16 q_depth;
 	u64 wwid;
 	u64 enclosure_logical_id;
@@ -751,6 +758,8 @@ static inline void mpi3mr_tgtdev_put(struct mpi3mr_tgt_dev *s)
  * @dev_removed: Device removed in the Firmware
  * @dev_removedelay: Device is waiting to be removed in FW
  * @dev_type: Device type
+ * @dev_nvme_dif: Device is NVMe DIF enabled
+ * @wslen: Write same max length
  * @io_throttle_enabled: I/O throttling needed or not
  * @io_divert: Flag indicates io divert is on or off for the dev
  * @throttle_group: Pointer to throttle group info
@@ -767,6 +776,8 @@ struct mpi3mr_stgt_priv_data {
 	u8 dev_removed;
 	u8 dev_removedelay;
 	u8 dev_type;
+	u8 dev_nvme_dif;
+	u16 wslen;
 	u8 io_throttle_enabled;
 	u8 io_divert;
 	struct mpi3mr_throttle_group_info *throttle_group;
@@ -782,12 +793,14 @@ struct mpi3mr_stgt_priv_data {
  * @ncq_prio_enable: NCQ priority enable for SATA device
  * @pend_count: Counter to track pending I/Os during error
  *		handling
+ * @wslen: Write same max length
  */
 struct mpi3mr_sdev_priv_data {
 	struct mpi3mr_stgt_priv_data *tgt_priv_data;
 	u32 lun_id;
 	u8 ncq_prio_enable;
 	u32 pend_count;
+	u16 wslen;
 };
 
 /**
@@ -959,6 +972,7 @@ struct scmd_priv {
  * @stop_drv_processing: Stop all command processing
  * @device_refresh_on: Don't process the events until devices are refreshed
  * @max_host_ios: Maximum host I/O count
+ * @max_sgl_entries: Max SGL entries per I/O
  * @chain_buf_count: Chain buffer count
  * @chain_buf_pool: Chain buffer pool
  * @chain_sgl_list: Chain SGL list
@@ -1129,6 +1143,7 @@ struct mpi3mr_ioc {
 	u16 max_host_ios;
 	spinlock_t tgtdev_lock;
 	struct list_head tgtdev_list;
+	u16 max_sgl_entries;
 
 	u32 chain_buf_count;
 	struct dma_pool *chain_buf_pool;
diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index 5fa07d6ee5b8..f039f1d98647 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -1163,6 +1163,12 @@ mpi3mr_revalidate_factsdata(struct mpi3mr_ioc *mrioc)
 		return -EPERM;
 	}
 
+	if (mrioc->shost->max_sectors != (mrioc->facts.max_data_length / 512))
+		ioc_err(mrioc, "Warning: The maximum data transfer length\n"
+			    "\tchanged after reset: previous(%d), new(%d),\n"
+			    "the driver cannot change this at run time\n",
+			    mrioc->shost->max_sectors * 512, mrioc->facts.max_data_length);
+
 	if ((mrioc->sas_transport_enabled) && (mrioc->facts.ioc_capabilities &
 	    MPI3_IOCFACTS_CAPABILITY_MULTIPATH_ENABLED))
 		ioc_err(mrioc,
@@ -2343,8 +2349,8 @@ static int mpi3mr_sync_timestamp(struct mpi3mr_ioc *mrioc)
 		ioc_err(mrioc, "Issue IOUCTL time_stamp: command timed out\n");
 		mrioc->init_cmds.is_waiting = 0;
 		if (!(mrioc->init_cmds.state & MPI3MR_CMD_RESET))
-			mpi3mr_soft_reset_handler(mrioc,
-			    MPI3MR_RESET_FROM_TSU_TIMEOUT, 1);
+			mpi3mr_check_rh_fault_ioc(mrioc,
+			    MPI3MR_RESET_FROM_TSU_TIMEOUT);
 		retval = -1;
 		goto out_unlock;
 	}
@@ -2856,6 +2862,7 @@ static void mpi3mr_process_factsdata(struct mpi3mr_ioc *mrioc,
 	    le16_to_cpu(facts_data->max_pcie_switches);
 	mrioc->facts.max_sasexpanders =
 	    le16_to_cpu(facts_data->max_sas_expanders);
+	mrioc->facts.max_data_length = le16_to_cpu(facts_data->max_data_length);
 	mrioc->facts.max_sasinitiators =
 	    le16_to_cpu(facts_data->max_sas_initiators);
 	mrioc->facts.max_enclosures = le16_to_cpu(facts_data->max_enclosures);
@@ -2893,13 +2900,18 @@ static void mpi3mr_process_factsdata(struct mpi3mr_ioc *mrioc,
 	mrioc->facts.io_throttle_high =
 	    le16_to_cpu(facts_data->io_throttle_high);
 
+	if (mrioc->facts.max_data_length ==
+	    MPI3_IOCFACTS_MAX_DATA_LENGTH_NOT_REPORTED)
+		mrioc->facts.max_data_length = MPI3MR_DEFAULT_MAX_IO_SIZE;
+	else
+		mrioc->facts.max_data_length *= MPI3MR_PAGE_SIZE_4K;
 	/* Store in 512b block count */
 	if (mrioc->facts.io_throttle_data_length)
 		mrioc->io_throttle_data_length =
 		    (mrioc->facts.io_throttle_data_length * 2 * 4);
 	else
 		/* set the length to 1MB + 1K to disable throttle */
-		mrioc->io_throttle_data_length = MPI3MR_MAX_SECTORS + 2;
+		mrioc->io_throttle_data_length = (mrioc->facts.max_data_length / 512) + 2;
 
 	mrioc->io_throttle_high = (mrioc->facts.io_throttle_high * 2 * 1024);
 	mrioc->io_throttle_low = (mrioc->facts.io_throttle_low * 2 * 1024);
@@ -2914,9 +2926,9 @@ static void mpi3mr_process_factsdata(struct mpi3mr_ioc *mrioc,
 	ioc_info(mrioc, "SGEModMask 0x%x SGEModVal 0x%x SGEModShift 0x%x ",
 	    mrioc->facts.sge_mod_mask, mrioc->facts.sge_mod_value,
 	    mrioc->facts.sge_mod_shift);
-	ioc_info(mrioc, "DMA mask %d InitialPE status 0x%x\n",
+	ioc_info(mrioc, "DMA mask %d InitialPE status 0x%x max_data_len (%d)\n",
 	    mrioc->facts.dma_mask, (facts_flags &
-	    MPI3_IOCFACTS_FLAGS_INITIAL_PORT_ENABLE_MASK));
+	    MPI3_IOCFACTS_FLAGS_INITIAL_PORT_ENABLE_MASK), mrioc->facts.max_data_length);
 	ioc_info(mrioc,
 	    "max_dev_per_throttle_group(%d), max_throttle_groups(%d)\n",
 	    mrioc->facts.max_dev_per_tg, mrioc->facts.max_io_throttle_group);
@@ -3359,8 +3371,8 @@ int mpi3mr_process_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
 	if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) {
 		ioc_err(mrioc, "Issue EvtNotify: command timed out\n");
 		if (!(mrioc->init_cmds.state & MPI3MR_CMD_RESET))
-			mpi3mr_soft_reset_handler(mrioc,
-			    MPI3MR_RESET_FROM_EVTACK_TIMEOUT, 1);
+			mpi3mr_check_rh_fault_ioc(mrioc,
+			    MPI3MR_RESET_FROM_EVTACK_TIMEOUT);
 		retval = -1;
 		goto out_unlock;
 	}
@@ -3414,7 +3426,14 @@ static int mpi3mr_alloc_chain_bufs(struct mpi3mr_ioc *mrioc)
 	if (!mrioc->chain_sgl_list)
 		goto out_failed;
 
-	sz = MPI3MR_PAGE_SIZE_4K;
+	if (mrioc->max_sgl_entries > (mrioc->facts.max_data_length /
+		MPI3MR_PAGE_SIZE_4K))
+		mrioc->max_sgl_entries = mrioc->facts.max_data_length /
+			MPI3MR_PAGE_SIZE_4K;
+	sz = mrioc->max_sgl_entries * sizeof(struct mpi3_sge_common);
+	ioc_info(mrioc, "number of sgl entries=%d chain buffer size=%dKB\n",
+			mrioc->max_sgl_entries, sz/1024);
+
 	mrioc->chain_buf_pool = dma_pool_create("chain_buf pool",
 	    &mrioc->pdev->dev, sz, 16, 0);
 	if (!mrioc->chain_buf_pool) {
@@ -3813,7 +3832,7 @@ retry_init:
 	}
 
 	mrioc->max_host_ios = mrioc->facts.max_reqs - MPI3MR_INTERNAL_CMDS_RESVD;
-
+	mrioc->shost->max_sectors = mrioc->facts.max_data_length / 512;
 	mrioc->num_io_throttle_group = mrioc->facts.max_io_throttle_group;
 	atomic_set(&mrioc->pend_large_data_sz, 0);
 
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index d627355303d7..89ba015c5d7e 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -33,6 +33,12 @@ static int logging_level;
 module_param(logging_level, int, 0);
 MODULE_PARM_DESC(logging_level,
 	" bits for enabling additional logging info (default=0)");
+static int max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES;
+module_param(max_sgl_entries, int, 0444);
+MODULE_PARM_DESC(max_sgl_entries,
+	"Preferred max number of SG entries to be used for a single I/O\n"
+	"The actual value will be determined by the driver\n"
+	"(Minimum=256, Maximum=2048, default=256)");
 
 /* Forward declarations*/
 static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
@@ -424,6 +430,7 @@ void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc)
 			tgt_priv->io_throttle_enabled = 0;
 			tgt_priv->io_divert = 0;
 			tgt_priv->throttle_group = NULL;
+			tgt_priv->wslen = 0;
 			if (tgtdev->host_exposed)
 				atomic_set(&tgt_priv->block_io, 1);
 		}
@@ -1034,6 +1041,19 @@ mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
 void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc)
 {
 	struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
+	struct mpi3mr_stgt_priv_data *tgt_priv;
+
+	dprint_reset(mrioc, "refresh target devices: check for removals\n");
+	list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
+	    list) {
+		if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) &&
+		    tgtdev->host_exposed && tgtdev->starget &&
+		    tgtdev->starget->hostdata) {
+			tgt_priv = tgtdev->starget->hostdata;
+			tgt_priv->dev_removed = 1;
+			atomic_set(&tgt_priv->block_io, 0);
+		}
+	}
 
 	list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
 	    list) {
@@ -1102,6 +1122,18 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
 		tgtdev->io_throttle_enabled =
 		    (flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0;
 
+	switch (flags & MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_MASK) {
+	case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_256_LB:
+		tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_256_BLKS;
+		break;
+	case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_2048_LB:
+		tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_2048_BLKS;
+		break;
+	case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_NO_LIMIT:
+	default:
+		tgtdev->wslen = 0;
+		break;
+	}
 
 	if (tgtdev->starget && tgtdev->starget->hostdata) {
 		scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
@@ -1113,6 +1145,7 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
 		    tgtdev->io_throttle_enabled;
 		if (is_added == true)
 			atomic_set(&scsi_tgt_priv_data->block_io, 0);
+		scsi_tgt_priv_data->wslen = tgtdev->wslen;
 	}
 
 	switch (dev_pg0->access_status) {
@@ -3413,7 +3446,7 @@ static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc,
 		    scsi_bufflen(scmd));
 		return -ENOMEM;
 	}
-	if (sges_left > MPI3MR_SG_DEPTH) {
+	if (sges_left > mrioc->max_sgl_entries) {
 		sdev_printk(KERN_ERR, scmd->device,
 		    "scsi_dma_map returned unsupported sge count %d!\n",
 		    sges_left);
@@ -3934,6 +3967,48 @@ void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout)
 }
 
 /**
+ * mpi3mr_setup_divert_ws - Setup Divert IO flag for write same
+ * @mrioc: Adapter instance reference
+ * @scmd: SCSI command reference
+ * @scsiio_req: MPI3 SCSI IO request
+ * @scsiio_flags: Pointer to MPI3 SCSI IO Flags
+ * @wslen: write same max length
+ *
+ * Gets values of unmap, ndob and number of blocks from write
+ * same scsi io and based on these values it sets divert IO flag
+ * and reason for diverting IO to firmware.
+ *
+ * Return: Nothing
+ */
+static inline void mpi3mr_setup_divert_ws(struct mpi3mr_ioc *mrioc,
+	struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req,
+	u32 *scsiio_flags, u16 wslen)
+{
+	u8 unmap = 0, ndob = 0;
+	u8 opcode = scmd->cmnd[0];
+	u32 num_blocks = 0;
+	u16 sa = (scmd->cmnd[8] << 8) | (scmd->cmnd[9]);
+
+	if (opcode == WRITE_SAME_16) {
+		unmap = scmd->cmnd[1] & 0x08;
+		ndob = scmd->cmnd[1] & 0x01;
+		num_blocks = get_unaligned_be32(scmd->cmnd + 10);
+	} else if ((opcode == VARIABLE_LENGTH_CMD) && (sa == WRITE_SAME_32)) {
+		unmap = scmd->cmnd[10] & 0x08;
+		ndob = scmd->cmnd[10] & 0x01;
+		num_blocks = get_unaligned_be32(scmd->cmnd + 28);
+	} else
+		return;
+
+	if ((unmap) && (ndob) && (num_blocks > wslen)) {
+		scsiio_req->msg_flags |=
+		    MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE;
+		*scsiio_flags |=
+			MPI3_SCSIIO_FLAGS_DIVERT_REASON_WRITE_SAME_TOO_LARGE;
+	}
+}
+
+/**
  * mpi3mr_eh_host_reset - Host reset error handling callback
  * @scmd: SCSI command reference
  *
@@ -4430,7 +4505,6 @@ static int mpi3mr_target_alloc(struct scsi_target *starget)
 	unsigned long flags;
 	int retval = 0;
 	struct sas_rphy *rphy = NULL;
-	bool update_stgt_priv_data = false;
 
 	scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL);
 	if (!scsi_tgt_priv_data)
@@ -4439,39 +4513,50 @@ static int mpi3mr_target_alloc(struct scsi_target *starget)
 	starget->hostdata = scsi_tgt_priv_data;
 
 	spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
-
 	if (starget->channel == mrioc->scsi_device_channel) {
 		tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
-		if (tgt_dev && !tgt_dev->is_hidden)
-			update_stgt_priv_data = true;
-		else
+		if (tgt_dev && !tgt_dev->is_hidden) {
+			scsi_tgt_priv_data->starget = starget;
+			scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
+			scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
+			scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
+			scsi_tgt_priv_data->tgt_dev = tgt_dev;
+			tgt_dev->starget = starget;
+			atomic_set(&scsi_tgt_priv_data->block_io, 0);
+			retval = 0;
+			if ((tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_PCIE) &&
+			    ((tgt_dev->dev_spec.pcie_inf.dev_info &
+			    MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
+			    MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) &&
+			    ((tgt_dev->dev_spec.pcie_inf.dev_info &
+			    MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_MASK) !=
+			    MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_0))
+				scsi_tgt_priv_data->dev_nvme_dif = 1;
+			scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled;
+			scsi_tgt_priv_data->wslen = tgt_dev->wslen;
+			if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD)
+				scsi_tgt_priv_data->throttle_group = tgt_dev->dev_spec.vd_inf.tg;
+		} else
 			retval = -ENXIO;
 	} else if (mrioc->sas_transport_enabled && !starget->channel) {
 		rphy = dev_to_rphy(starget->dev.parent);
 		tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
 		    rphy->identify.sas_address, rphy);
 		if (tgt_dev && !tgt_dev->is_hidden && !tgt_dev->non_stl &&
-		    (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA))
-			update_stgt_priv_data = true;
-		else
+		    (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA)) {
+			scsi_tgt_priv_data->starget = starget;
+			scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
+			scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
+			scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
+			scsi_tgt_priv_data->tgt_dev = tgt_dev;
+			scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled;
+			scsi_tgt_priv_data->wslen = tgt_dev->wslen;
+			tgt_dev->starget = starget;
+			atomic_set(&scsi_tgt_priv_data->block_io, 0);
+			retval = 0;
+		} else
 			retval = -ENXIO;
 	}
-
-	if (update_stgt_priv_data) {
-		scsi_tgt_priv_data->starget = starget;
-		scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
-		scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
-		scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
-		scsi_tgt_priv_data->tgt_dev = tgt_dev;
-		tgt_dev->starget = starget;
-		atomic_set(&scsi_tgt_priv_data->block_io, 0);
-		retval = 0;
-		scsi_tgt_priv_data->io_throttle_enabled =
-		    tgt_dev->io_throttle_enabled;
-		if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD)
-			scsi_tgt_priv_data->throttle_group =
-			    tgt_dev->dev_spec.vd_inf.tg;
-	}
 	spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
 
 	return retval;
@@ -4732,6 +4817,10 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost,
 
 	mpi3mr_setup_eedp(mrioc, scmd, scsiio_req);
 
+	if (stgt_priv_data->wslen)
+		mpi3mr_setup_divert_ws(mrioc, scmd, scsiio_req, &scsiio_flags,
+		    stgt_priv_data->wslen);
+
 	memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len);
 	scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd));
 	scsiio_req->dev_handle = cpu_to_le16(dev_handle);
@@ -4818,10 +4907,10 @@ static const struct scsi_host_template mpi3mr_driver_template = {
 	.no_write_same			= 1,
 	.can_queue			= 1,
 	.this_id			= -1,
-	.sg_tablesize			= MPI3MR_SG_DEPTH,
+	.sg_tablesize			= MPI3MR_DEFAULT_SGL_ENTRIES,
 	/* max xfer supported is 1M (2K in 512 byte sized sectors)
 	 */
-	.max_sectors			= 2048,
+	.max_sectors			= (MPI3MR_DEFAULT_MAX_IO_SIZE / 512),
 	.cmd_per_lun			= MPI3MR_MAX_CMDS_LUN,
 	.max_segment_size		= 0xffffffff,
 	.track_queue_depth		= 1,
@@ -5004,6 +5093,16 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	mrioc->pdev = pdev;
 	mrioc->stop_bsgs = 1;
 
+	mrioc->max_sgl_entries = max_sgl_entries;
+	if (max_sgl_entries > MPI3MR_MAX_SGL_ENTRIES)
+		mrioc->max_sgl_entries = MPI3MR_MAX_SGL_ENTRIES;
+	else if (max_sgl_entries < MPI3MR_DEFAULT_SGL_ENTRIES)
+		mrioc->max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES;
+	else {
+		mrioc->max_sgl_entries /= MPI3MR_DEFAULT_SGL_ENTRIES;
+		mrioc->max_sgl_entries *= MPI3MR_DEFAULT_SGL_ENTRIES;
+	}
+
 	/* init shost parameters */
 	shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH;
 	shost->max_lun = -1;
@@ -5068,7 +5167,7 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		shost->nr_maps = 3;
 
 	shost->can_queue = mrioc->max_host_ios;
-	shost->sg_tablesize = MPI3MR_SG_DEPTH;
+	shost->sg_tablesize = mrioc->max_sgl_entries;
 	shost->max_id = mrioc->facts.max_perids + 1;
 
 	retval = scsi_add_host(shost, &pdev->dev);