[SCSI] mpt2sas v00.100.11.15

* This is new scsi lld device driver from LSI supporting the SAS 2.0
  standard. I have split patchs by filename.

* Here is list of new 6gb host controllers:

  LSI SAS2004
  LSI SAS2008
  LSI SAS2108
  LSI SAS2116

* Here are the changes in the 4th posting of this patch set:

(1) fix compile errors when SCSI_MPT2SAS_LOGGING is not enabled
(2) add mpt2sas to the SCSI Mid Layer Makefile
(3) append mpt2sas_ to the naming of all non-static functions
(4) fix oops for SMP_PASSTHRU
(5) doorbell algorithm imported changes from windows driver

* Here are the changes in the 3rd posting of this patch set:

(1) add readl following writel from the function that disables interrupts
(2) replace 0xFFFFFFFFFFFFFFFFULL with ~0ULL
(3) when calling pci_enable_msix, only pass one msix entry (instead of 15).
(4) remove the "current HW implementation uses..... " comment in the sources
(5) merged bug fix for SIGIO/POLLIN notifcation; reported by the storlib team.

* Here are the changes in the 2nd posting of this patch set:

(1) use little endian types in the mpi headers
(2) merged in bug fix's from inhouse drivers.

Signed-off-by: Eric Moore <eric.moore@lsi.com>
Tested-by: peter Bogdanovic <pbog@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 1211 insertions, 0 deletions

diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
new file mode 100644
index 00000000000..e03dc0b1e1a
--- /dev/null
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -0,0 +1,1211 @@
+/*
+ * SAS Transport Layer for MPT (Message Passing Technology) based controllers
+ *
+ * This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
+ * Copyright (C) 2007-2008  LSI Corporation
+ *  (mailto:DL-MPTFusionLinux@lsi.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * NO WARRANTY
+ * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
+ * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
+ * solely responsible for determining the appropriateness of using and
+ * distributing the Program and assumes all risks associated with its
+ * exercise of rights under this Agreement, including but not limited to
+ * the risks and costs of program errors, damage to or loss of data,
+ * programs or equipment, and unavailability or interruption of operations.
+
+ * DISCLAIMER OF LIABILITY
+ * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
+ * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport_sas.h>
+#include <scsi/scsi_dbg.h>
+
+#include "mpt2sas_base.h"
+/**
+ * _transport_sas_node_find_by_handle - sas node search
+ * @ioc: per adapter object
+ * @handle: expander or hba handle (assigned by firmware)
+ * Context: Calling function should acquire ioc->sas_node_lock.
+ *
+ * Search for either hba phys or expander device based on handle, then returns
+ * the sas_node object.
+ */
+static struct _sas_node *
+_transport_sas_node_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
+{
+	int i;
+
+	for (i = 0; i < ioc->sas_hba.num_phys; i++)
+		if (ioc->sas_hba.phy[i].handle == handle)
+			return &ioc->sas_hba;
+
+	return mpt2sas_scsih_expander_find_by_handle(ioc, handle);
+}
+
+/**
+ * _transport_convert_phy_link_rate -
+ * @link_rate: link rate returned from mpt firmware
+ *
+ * Convert link_rate from mpi fusion into sas_transport form.
+ */
+static enum sas_linkrate
+_transport_convert_phy_link_rate(u8 link_rate)
+{
+	enum sas_linkrate rc;
+
+	switch (link_rate) {
+	case MPI2_SAS_NEG_LINK_RATE_1_5:
+		rc = SAS_LINK_RATE_1_5_GBPS;
+		break;
+	case MPI2_SAS_NEG_LINK_RATE_3_0:
+		rc = SAS_LINK_RATE_3_0_GBPS;
+		break;
+	case MPI2_SAS_NEG_LINK_RATE_6_0:
+		rc = SAS_LINK_RATE_6_0_GBPS;
+		break;
+	case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
+		rc = SAS_PHY_DISABLED;
+		break;
+	case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
+		rc = SAS_LINK_RATE_FAILED;
+		break;
+	case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
+		rc = SAS_SATA_PORT_SELECTOR;
+		break;
+	case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
+		rc = SAS_PHY_RESET_IN_PROGRESS;
+		break;
+	default:
+	case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
+	case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
+		rc = SAS_LINK_RATE_UNKNOWN;
+		break;
+	}
+	return rc;
+}
+
+/**
+ * _transport_set_identify - set identify for phys and end devices
+ * @ioc: per adapter object
+ * @handle: device handle
+ * @identify: sas identify info
+ *
+ * Populates sas identify info.
+ *
+ * Returns 0 for success, non-zero for failure.
+ */
+static int
+_transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle,
+    struct sas_identify *identify)
+{
+	Mpi2SasDevicePage0_t sas_device_pg0;
+	Mpi2ConfigReply_t mpi_reply;
+	u32 device_info;
+	u32 ioc_status;
+
+	if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
+	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -1;
+	}
+
+	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
+	    MPI2_IOCSTATUS_MASK;
+	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
+		printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)"
+		    "\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
+		     __FILE__, __LINE__, __func__);
+		return -1;
+	}
+
+	memset(identify, 0, sizeof(identify));
+	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
+
+	/* sas_address */
+	identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
+
+	/* device_type */
+	switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
+	case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
+		identify->device_type = SAS_PHY_UNUSED;
+		break;
+	case MPI2_SAS_DEVICE_INFO_END_DEVICE:
+		identify->device_type = SAS_END_DEVICE;
+		break;
+	case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
+		identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
+		break;
+	case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
+		identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
+		break;
+	}
+
+	/* initiator_port_protocols */
+	if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
+		identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
+	if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
+		identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
+	if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
+		identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
+	if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
+		identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
+
+	/* target_port_protocols */
+	if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
+		identify->target_port_protocols |= SAS_PROTOCOL_SSP;
+	if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
+		identify->target_port_protocols |= SAS_PROTOCOL_STP;
+	if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
+		identify->target_port_protocols |= SAS_PROTOCOL_SMP;
+	if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
+		identify->target_port_protocols |= SAS_PROTOCOL_SATA;
+
+	return 0;
+}
+
+/**
+ * mpt2sas_transport_done -  internal transport layer callback handler.
+ * @ioc: per adapter object
+ * @smid: system request message index
+ * @VF_ID: virtual function id
+ * @reply: reply message frame(lower 32bit addr)
+ *
+ * Callback handler when sending internal generated transport cmds.
+ * The callback index passed is `ioc->transport_cb_idx`
+ *
+ * Return nothing.
+ */
+void
+mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID,
+    u32 reply)
+{
+	MPI2DefaultReply_t *mpi_reply;
+
+	mpi_reply =  mpt2sas_base_get_reply_virt_addr(ioc, reply);
+	if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
+		return;
+	if (ioc->transport_cmds.smid != smid)
+		return;
+	ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
+	if (mpi_reply) {
+		memcpy(ioc->transport_cmds.reply, mpi_reply,
+		    mpi_reply->MsgLength*4);
+		ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
+	}
+	ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
+	complete(&ioc->transport_cmds.done);
+}
+
+/* report manufacture request structure */
+struct rep_manu_request{
+	u8 smp_frame_type;
+	u8 function;
+	u8 reserved;
+	u8 request_length;
+};
+
+/* report manufacture reply structure */
+struct rep_manu_reply{
+	u8 smp_frame_type; /* 0x41 */
+	u8 function; /* 0x01 */
+	u8 function_result;
+	u8 response_length;
+	u16 expander_change_count;
+	u8 reserved0[2];
+	u8 sas_format:1;
+	u8 reserved1:7;
+	u8 reserved2[3];
+	u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
+	u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
+	u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
+	u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
+	u16 component_id;
+	u8 component_revision_id;
+	u8 reserved3;
+	u8 vendor_specific[8];
+};
+
+/**
+ * transport_expander_report_manufacture - obtain SMP report_manufacture
+ * @ioc: per adapter object
+ * @sas_address: expander sas address
+ * @edev: the sas_expander_device object
+ *
+ * Fills in the sas_expander_device object when SMP port is created.
+ *
+ * Returns 0 for success, non-zero for failure.
+ */
+static int
+transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
+    u64 sas_address, struct sas_expander_device *edev)
+{
+	Mpi2SmpPassthroughRequest_t *mpi_request;
+	Mpi2SmpPassthroughReply_t *mpi_reply;
+	struct rep_manu_reply *manufacture_reply;
+	struct rep_manu_request *manufacture_request;
+	int rc;
+	u16 smid;
+	u32 ioc_state;
+	unsigned long timeleft;
+	void *psge;
+	u32 sgl_flags;
+	u8 issue_reset = 0;
+	unsigned long flags;
+	void *data_out = NULL;
+	dma_addr_t data_out_dma;
+	u32 sz;
+	u64 *sas_address_le;
+	u16 wait_state_count;
+
+	spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
+	if (ioc->ioc_reset_in_progress) {
+		spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
+		    __func__, ioc->name);
+		return -EFAULT;
+	}
+	spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+
+	mutex_lock(&ioc->transport_cmds.mutex);
+
+	if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
+		printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
+		    ioc->name, __func__);
+		rc = -EAGAIN;
+		goto out;
+	}
+	ioc->transport_cmds.status = MPT2_CMD_PENDING;
+
+	wait_state_count = 0;
+	ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
+	while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
+		if (wait_state_count++ == 10) {
+			printk(MPT2SAS_ERR_FMT
+			    "%s: failed due to ioc not operational\n",
+			    ioc->name, __func__);
+			rc = -EFAULT;
+			goto out;
+		}
+		ssleep(1);
+		ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
+		printk(MPT2SAS_INFO_FMT "%s: waiting for "
+		    "operational state(count=%d)\n", ioc->name,
+		    __func__, wait_state_count);
+	}
+	if (wait_state_count)
+		printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
+		    ioc->name, __func__);
+
+	smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
+	if (!smid) {
+		printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
+		    ioc->name, __func__);
+		rc = -EAGAIN;
+		goto out;
+	}
+
+	rc = 0;
+	mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
+	ioc->transport_cmds.smid = smid;
+
+	sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
+	data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
+
+	if (!data_out) {
+		printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
+		    __LINE__, __func__);
+		rc = -ENOMEM;
+		mpt2sas_base_free_smid(ioc, smid);
+		goto out;
+	}
+
+	manufacture_request = data_out;
+	manufacture_request->smp_frame_type = 0x40;
+	manufacture_request->function = 1;
+	manufacture_request->reserved = 0;
+	manufacture_request->request_length = 0;
+
+	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
+	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
+	mpi_request->PhysicalPort = 0xFF;
+	sas_address_le = (u64 *)&mpi_request->SASAddress;
+	*sas_address_le = cpu_to_le64(sas_address);
+	mpi_request->RequestDataLength = sizeof(struct rep_manu_request);
+	psge = &mpi_request->SGL;
+
+	/* WRITE sgel first */
+	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+	    MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
+	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+	ioc->base_add_sg_single(psge, sgl_flags |
+	    sizeof(struct rep_manu_request), data_out_dma);
+
+	/* incr sgel */
+	psge += ioc->sge_size;
+
+	/* READ sgel last */
+	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+	    MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
+	    MPI2_SGE_FLAGS_END_OF_LIST);
+	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+	ioc->base_add_sg_single(psge, sgl_flags |
+	    sizeof(struct rep_manu_reply), data_out_dma +
+	    sizeof(struct rep_manu_request));
+
+	dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
+	    "send to sas_addr(0x%016llx)\n", ioc->name,
+	    (unsigned long long)sas_address));
+	mpt2sas_base_put_smid_default(ioc, smid, 0 /* VF_ID */);
+	timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
+	    10*HZ);
+
+	if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
+		printk(MPT2SAS_ERR_FMT "%s: timeout\n",
+		    ioc->name, __func__);
+		_debug_dump_mf(mpi_request,
+		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
+		if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
+			issue_reset = 1;
+		goto issue_host_reset;
+	}
+
+	dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
+	    "complete\n", ioc->name));
+
+	if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
+		u8 *tmp;
+
+		mpi_reply = ioc->transport_cmds.reply;
+
+		dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+		    "report_manufacture - reply data transfer size(%d)\n",
+		    ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
+
+		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
+		    sizeof(struct rep_manu_reply))
+			goto out;
+
+		manufacture_reply = data_out + sizeof(struct rep_manu_request);
+		strncpy(edev->vendor_id, manufacture_reply->vendor_id,
+		     SAS_EXPANDER_VENDOR_ID_LEN);
+		strncpy(edev->product_id, manufacture_reply->product_id,
+		     SAS_EXPANDER_PRODUCT_ID_LEN);
+		strncpy(edev->product_rev, manufacture_reply->product_rev,
+		     SAS_EXPANDER_PRODUCT_REV_LEN);
+		edev->level = manufacture_reply->sas_format;
+		if (manufacture_reply->sas_format) {
+			strncpy(edev->component_vendor_id,
+			    manufacture_reply->component_vendor_id,
+			     SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
+			tmp = (u8 *)&manufacture_reply->component_id;
+			edev->component_id = tmp[0] << 8 | tmp[1];
+			edev->component_revision_id =
+			    manufacture_reply->component_revision_id;
+		}
+	} else
+		dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+		    "report_manufacture - no reply\n", ioc->name));
+
+ issue_host_reset:
+	if (issue_reset)
+		mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
+		    FORCE_BIG_HAMMER);
+ out:
+	ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
+	if (data_out)
+		pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
+
+	mutex_unlock(&ioc->transport_cmds.mutex);
+	return rc;
+}
+
+/**
+ * mpt2sas_transport_port_add - insert port to the list
+ * @ioc: per adapter object
+ * @handle: handle of attached device
+ * @parent_handle: parent handle(either hba or expander)
+ * Context: This function will acquire ioc->sas_node_lock.
+ *
+ * Adding new port object to the sas_node->sas_port_list.
+ *
+ * Returns mpt2sas_port.
+ */
+struct _sas_port *
+mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
+    u16 parent_handle)
+{
+	struct _sas_phy *mpt2sas_phy, *next;
+	struct _sas_port *mpt2sas_port;
+	unsigned long flags;
+	struct _sas_node *sas_node;
+	struct sas_rphy *rphy;
+	int i;
+	struct sas_port *port;
+
+	if (!parent_handle)
+		return NULL;
+
+	mpt2sas_port = kzalloc(sizeof(struct _sas_port),
+	    GFP_KERNEL);
+	if (!mpt2sas_port) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return NULL;
+	}
+
+	INIT_LIST_HEAD(&mpt2sas_port->port_list);
+	INIT_LIST_HEAD(&mpt2sas_port->phy_list);
+	spin_lock_irqsave(&ioc->sas_node_lock, flags);
+	sas_node = _transport_sas_node_find_by_handle(ioc, parent_handle);
+	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+
+	if (!sas_node) {
+		printk(MPT2SAS_ERR_FMT "%s: Could not find parent(0x%04x)!\n",
+		    ioc->name, __func__, parent_handle);
+		goto out_fail;
+	}
+
+	mpt2sas_port->handle = parent_handle;
+	mpt2sas_port->sas_address = sas_node->sas_address;
+	if ((_transport_set_identify(ioc, handle,
+	    &mpt2sas_port->remote_identify))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		goto out_fail;
+	}
+
+	if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		goto out_fail;
+	}
+
+	for (i = 0; i < sas_node->num_phys; i++) {
+		if (sas_node->phy[i].remote_identify.sas_address !=
+		    mpt2sas_port->remote_identify.sas_address)
+			continue;
+		list_add_tail(&sas_node->phy[i].port_siblings,
+		    &mpt2sas_port->phy_list);
+		mpt2sas_port->num_phys++;
+	}
+
+	if (!mpt2sas_port->num_phys) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		goto out_fail;
+	}
+
+	port = sas_port_alloc_num(sas_node->parent_dev);
+	if ((sas_port_add(port))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		goto out_fail;
+	}
+
+	list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
+	    port_siblings) {
+		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+			dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
+			    ", sas_addr(0x%016llx), phy(%d)\n", handle,
+			    (unsigned long long)
+			    mpt2sas_port->remote_identify.sas_address,
+			    mpt2sas_phy->phy_id);
+		sas_port_add_phy(port, mpt2sas_phy->phy);
+	}
+
+	mpt2sas_port->port = port;
+	if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
+		rphy = sas_end_device_alloc(port);
+	else
+		rphy = sas_expander_alloc(port,
+		    mpt2sas_port->remote_identify.device_type);
+
+	rphy->identify = mpt2sas_port->remote_identify;
+	if ((sas_rphy_add(rphy))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+	}
+	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+		dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
+		    "sas_addr(0x%016llx)\n", handle,
+		    (unsigned long long)
+		    mpt2sas_port->remote_identify.sas_address);
+	mpt2sas_port->rphy = rphy;
+	spin_lock_irqsave(&ioc->sas_node_lock, flags);
+	list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
+	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+
+	/* fill in report manufacture */
+	if (mpt2sas_port->remote_identify.device_type ==
+	    MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
+	    mpt2sas_port->remote_identify.device_type ==
+	    MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
+		transport_expander_report_manufacture(ioc,
+		    mpt2sas_port->remote_identify.sas_address,
+		    rphy_to_expander_device(rphy));
+
+	return mpt2sas_port;
+
+ out_fail:
+	list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
+	    port_siblings)
+		list_del(&mpt2sas_phy->port_siblings);
+	kfree(mpt2sas_port);
+	return NULL;
+}
+
+/**
+ * mpt2sas_transport_port_remove - remove port from the list
+ * @ioc: per adapter object
+ * @sas_address: sas address of attached device
+ * @parent_handle: handle to the upstream parent(either hba or expander)
+ * Context: This function will acquire ioc->sas_node_lock.
+ *
+ * Removing object and freeing associated memory from the
+ * ioc->sas_port_list.
+ *
+ * Return nothing.
+ */
+void
+mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
+    u16 parent_handle)
+{
+	int i;
+	unsigned long flags;
+	struct _sas_port *mpt2sas_port, *next;
+	struct _sas_node *sas_node;
+	u8 found = 0;
+	struct _sas_phy *mpt2sas_phy, *next_phy;
+
+	spin_lock_irqsave(&ioc->sas_node_lock, flags);
+	sas_node = _transport_sas_node_find_by_handle(ioc, parent_handle);
+	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+	if (!sas_node)
+		return;
+	list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
+	    port_list) {
+		if (mpt2sas_port->remote_identify.sas_address != sas_address)
+			continue;
+		found = 1;
+		list_del(&mpt2sas_port->port_list);
+		goto out;
+	}
+ out:
+	if (!found)
+		return;
+
+	for (i = 0; i < sas_node->num_phys; i++) {
+		if (sas_node->phy[i].remote_identify.sas_address == sas_address)
+			memset(&sas_node->phy[i].remote_identify, 0 ,
+			    sizeof(struct sas_identify));
+	}
+
+	list_for_each_entry_safe(mpt2sas_phy, next_phy,
+	    &mpt2sas_port->phy_list, port_siblings) {
+		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+			dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
+			    "remove: parent_handle(0x%04x), "
+			    "sas_addr(0x%016llx), phy(%d)\n", parent_handle,
+			    (unsigned long long)
+			    mpt2sas_port->remote_identify.sas_address,
+			    mpt2sas_phy->phy_id);
+		sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
+		list_del(&mpt2sas_phy->port_siblings);
+	}
+	sas_port_delete(mpt2sas_port->port);
+	kfree(mpt2sas_port);
+}
+
+/**
+ * mpt2sas_transport_add_host_phy - report sas_host phy to transport
+ * @ioc: per adapter object
+ * @mpt2sas_phy: mpt2sas per phy object
+ * @phy_pg0: sas phy page 0
+ * @parent_dev: parent device class object
+ *
+ * Returns 0 for success, non-zero for failure.
+ */
+int
+mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
+    *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
+{
+	struct sas_phy *phy;
+	int phy_index = mpt2sas_phy->phy_id;
+
+
+	INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
+	phy = sas_phy_alloc(parent_dev, phy_index);
+	if (!phy) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -1;
+	}
+	if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
+	    &mpt2sas_phy->identify))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -1;
+	}
+	phy->identify = mpt2sas_phy->identify;
+	mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
+	if (mpt2sas_phy->attached_handle)
+		_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
+		    &mpt2sas_phy->remote_identify);
+	phy->identify.phy_identifier = mpt2sas_phy->phy_id;
+	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
+	    phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
+	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
+	    phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
+	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
+	    phy_pg0.HwLinkRate >> 4);
+	phy->minimum_linkrate = _transport_convert_phy_link_rate(
+	    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
+	phy->maximum_linkrate = _transport_convert_phy_link_rate(
+	    phy_pg0.ProgrammedLinkRate >> 4);
+
+	if ((sas_phy_add(phy))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		sas_phy_free(phy);
+		return -1;
+	}
+	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+		dev_printk(KERN_INFO, &phy->dev,
+		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
+		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
+		    mpt2sas_phy->handle, (unsigned long long)
+		    mpt2sas_phy->identify.sas_address,
+		    mpt2sas_phy->attached_handle,
+		    (unsigned long long)
+		    mpt2sas_phy->remote_identify.sas_address);
+	mpt2sas_phy->phy = phy;
+	return 0;
+}
+
+
+/**
+ * mpt2sas_transport_add_expander_phy - report expander phy to transport
+ * @ioc: per adapter object
+ * @mpt2sas_phy: mpt2sas per phy object
+ * @expander_pg1: expander page 1
+ * @parent_dev: parent device class object
+ *
+ * Returns 0 for success, non-zero for failure.
+ */
+int
+mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
+    *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
+{
+	struct sas_phy *phy;
+	int phy_index = mpt2sas_phy->phy_id;
+
+	INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
+	phy = sas_phy_alloc(parent_dev, phy_index);
+	if (!phy) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -1;
+	}
+	if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
+	    &mpt2sas_phy->identify))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -1;
+	}
+	phy->identify = mpt2sas_phy->identify;
+	mpt2sas_phy->attached_handle =
+	    le16_to_cpu(expander_pg1.AttachedDevHandle);
+	if (mpt2sas_phy->attached_handle)
+		_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
+		    &mpt2sas_phy->remote_identify);
+	phy->identify.phy_identifier = mpt2sas_phy->phy_id;
+	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
+	    expander_pg1.NegotiatedLinkRate &
+	    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
+	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
+	    expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
+	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
+	    expander_pg1.HwLinkRate >> 4);
+	phy->minimum_linkrate = _transport_convert_phy_link_rate(
+	    expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
+	phy->maximum_linkrate = _transport_convert_phy_link_rate(
+	    expander_pg1.ProgrammedLinkRate >> 4);
+
+	if ((sas_phy_add(phy))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		sas_phy_free(phy);
+		return -1;
+	}
+	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+		dev_printk(KERN_INFO, &phy->dev,
+		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
+		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
+		    mpt2sas_phy->handle, (unsigned long long)
+		    mpt2sas_phy->identify.sas_address,
+		    mpt2sas_phy->attached_handle,
+		    (unsigned long long)
+		    mpt2sas_phy->remote_identify.sas_address);
+	mpt2sas_phy->phy = phy;
+	return 0;
+}
+
+/**
+ * mpt2sas_transport_update_phy_link_change - refreshing phy link changes and attached devices
+ * @ioc: per adapter object
+ * @handle: handle to sas_host or expander
+ * @attached_handle: attached device handle
+ * @phy_numberv: phy number
+ * @link_rate: new link rate
+ *
+ * Returns nothing.
+ */
+void
+mpt2sas_transport_update_phy_link_change(struct MPT2SAS_ADAPTER *ioc,
+    u16 handle, u16 attached_handle, u8 phy_number, u8 link_rate)
+{
+	unsigned long flags;
+	struct _sas_node *sas_node;
+	struct _sas_phy *mpt2sas_phy;
+
+	spin_lock_irqsave(&ioc->sas_node_lock, flags);
+	sas_node = _transport_sas_node_find_by_handle(ioc, handle);
+	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+	if (!sas_node)
+		return;
+
+	mpt2sas_phy = &sas_node->phy[phy_number];
+	mpt2sas_phy->attached_handle = attached_handle;
+	if (attached_handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
+		_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
+		    &mpt2sas_phy->remote_identify);
+	else
+		memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
+		    sas_identify));
+
+	if (mpt2sas_phy->phy)
+		mpt2sas_phy->phy->negotiated_linkrate =
+		    _transport_convert_phy_link_rate(link_rate);
+
+	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+		dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
+		    "refresh: handle(0x%04x), sas_addr(0x%016llx),\n"
+		    "\tlink_rate(0x%02x), phy(%d)\n"
+		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
+		    handle, (unsigned long long)
+		    mpt2sas_phy->identify.sas_address, link_rate,
+		    phy_number, attached_handle,
+		    (unsigned long long)
+		    mpt2sas_phy->remote_identify.sas_address);
+}
+
+static inline void *
+phy_to_ioc(struct sas_phy *phy)
+{
+	struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
+	return shost_priv(shost);
+}
+
+static inline void *
+rphy_to_ioc(struct sas_rphy *rphy)
+{
+	struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
+	return shost_priv(shost);
+}
+
+/**
+ * transport_get_linkerrors -
+ * @phy: The sas phy object
+ *
+ * Only support sas_host direct attached phys.
+ * Returns 0 for success, non-zero for failure.
+ *
+ */
+static int
+transport_get_linkerrors(struct sas_phy *phy)
+{
+	struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
+	struct _sas_phy *mpt2sas_phy;
+	Mpi2ConfigReply_t mpi_reply;
+	Mpi2SasPhyPage1_t phy_pg1;
+	int i;
+
+	for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
+	    !mpt2sas_phy; i++) {
+		if (ioc->sas_hba.phy[i].phy != phy)
+			continue;
+		mpt2sas_phy = &ioc->sas_hba.phy[i];
+	}
+
+	if (!mpt2sas_phy) /* this phy not on sas_host */
+		return -EINVAL;
+
+	if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
+		    mpt2sas_phy->phy_id))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -ENXIO;
+	}
+
+	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
+		printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
+		    "(0x%04x), loginfo(0x%08x)\n", ioc->name,
+		    mpt2sas_phy->phy_id,
+		    le16_to_cpu(mpi_reply.IOCStatus),
+		    le32_to_cpu(mpi_reply.IOCLogInfo));
+
+	phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
+	phy->running_disparity_error_count =
+	    le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
+	phy->loss_of_dword_sync_count =
+	    le32_to_cpu(phy_pg1.LossDwordSynchCount);
+	phy->phy_reset_problem_count =
+	    le32_to_cpu(phy_pg1.PhyResetProblemCount);
+	return 0;
+}
+
+/**
+ * transport_get_enclosure_identifier -
+ * @phy: The sas phy object
+ *
+ * Obtain the enclosure logical id for an expander.
+ * Returns 0 for success, non-zero for failure.
+ */
+static int
+transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
+{
+	struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
+	struct _sas_node *sas_expander;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ioc->sas_node_lock, flags);
+	sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
+	    rphy->identify.sas_address);
+	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+
+	if (!sas_expander)
+		return -ENXIO;
+
+	*identifier = sas_expander->enclosure_logical_id;
+	return 0;
+}
+
+/**
+ * transport_get_bay_identifier -
+ * @phy: The sas phy object
+ *
+ * Returns the slot id for a device that resides inside an enclosure.
+ */
+static int
+transport_get_bay_identifier(struct sas_rphy *rphy)
+{
+	struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
+	struct _sas_device *sas_device;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ioc->sas_device_lock, flags);
+	sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
+	    rphy->identify.sas_address);
+	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
+
+	if (!sas_device)
+		return -ENXIO;
+
+	return sas_device->slot;
+}
+
+/**
+ * transport_phy_reset -
+ * @phy: The sas phy object
+ * @hard_reset:
+ *
+ * Only support sas_host direct attached phys.
+ * Returns 0 for success, non-zero for failure.
+ */
+static int
+transport_phy_reset(struct sas_phy *phy, int hard_reset)
+{
+	struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
+	struct _sas_phy *mpt2sas_phy;
+	Mpi2SasIoUnitControlReply_t mpi_reply;
+	Mpi2SasIoUnitControlRequest_t mpi_request;
+	int i;
+
+	for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
+	    !mpt2sas_phy; i++) {
+		if (ioc->sas_hba.phy[i].phy != phy)
+			continue;
+		mpt2sas_phy = &ioc->sas_hba.phy[i];
+	}
+
+	if (!mpt2sas_phy) /* this phy not on sas_host */
+		return -EINVAL;
+
+	memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
+	mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
+	mpi_request.Operation = hard_reset ?
+	    MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
+	mpi_request.PhyNum = mpt2sas_phy->phy_id;
+
+	if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
+		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+		    ioc->name, __FILE__, __LINE__, __func__);
+		return -ENXIO;
+	}
+
+	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
+		printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
+		    "(0x%04x), loginfo(0x%08x)\n", ioc->name,
+		    mpt2sas_phy->phy_id,
+		    le16_to_cpu(mpi_reply.IOCStatus),
+		    le32_to_cpu(mpi_reply.IOCLogInfo));
+
+	return 0;
+}
+
+/**
+ * transport_smp_handler - transport portal for smp passthru
+ * @shost: shost object
+ * @rphy: sas transport rphy object
+ * @req:
+ *
+ * This used primarily for smp_utils.
+ * Example:
+ *           smp_rep_general /sys/class/bsg/expander-5:0
+ */
+static int
+transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
+    struct request *req)
+{
+	struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
+	Mpi2SmpPassthroughRequest_t *mpi_request;
+	Mpi2SmpPassthroughReply_t *mpi_reply;
+	int rc;
+	u16 smid;
+	u32 ioc_state;
+	unsigned long timeleft;
+	void *psge;
+	u32 sgl_flags;
+	u8 issue_reset = 0;
+	unsigned long flags;
+	dma_addr_t dma_addr_in = 0;
+	dma_addr_t dma_addr_out = 0;
+	u16 wait_state_count;
+	struct request *rsp = req->next_rq;
+
+	if (!rsp) {
+		printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
+		    "missing\n", ioc->name, __func__);
+		return -EINVAL;
+	}
+
+	/* do we need to support multiple segments? */
+	if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
+		printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
+		    "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
+		    req->data_len, rsp->bio->bi_vcnt, rsp->data_len);
+		return -EINVAL;
+	}
+
+	spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
+	if (ioc->ioc_reset_in_progress) {
+		spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
+		    __func__, ioc->name);
+		return -EFAULT;
+	}
+	spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+
+	rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
+	if (rc)
+		return rc;
+
+	if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
+		printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
+		    __func__);
+		rc = -EAGAIN;
+		goto out;
+	}
+	ioc->transport_cmds.status = MPT2_CMD_PENDING;
+
+	wait_state_count = 0;
+	ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
+	while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
+		if (wait_state_count++ == 10) {
+			printk(MPT2SAS_ERR_FMT
+			    "%s: failed due to ioc not operational\n",
+			    ioc->name, __func__);
+			rc = -EFAULT;
+			goto out;
+		}
+		ssleep(1);
+		ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
+		printk(MPT2SAS_INFO_FMT "%s: waiting for "
+		    "operational state(count=%d)\n", ioc->name,
+		    __func__, wait_state_count);
+	}
+	if (wait_state_count)
+		printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
+		    ioc->name, __func__);
+
+	smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
+	if (!smid) {
+		printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
+		    ioc->name, __func__);
+		rc = -EAGAIN;
+		goto out;
+	}
+
+	rc = 0;
+	mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
+	ioc->transport_cmds.smid = smid;
+
+	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
+	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
+	mpi_request->PhysicalPort = 0xFF;
+	*((u64 *)&mpi_request->SASAddress) = (rphy) ?
+	    cpu_to_le64(rphy->identify.sas_address) :
+	    cpu_to_le64(ioc->sas_hba.sas_address);
+	mpi_request->RequestDataLength = cpu_to_le16(req->data_len - 4);
+	psge = &mpi_request->SGL;
+
+	/* WRITE sgel first */
+	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+	    MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
+	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+	dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
+	      req->data_len, PCI_DMA_BIDIRECTIONAL);
+	if (!dma_addr_out) {
+		mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
+		goto unmap;
+	}
+
+	ioc->base_add_sg_single(psge, sgl_flags | (req->data_len - 4),
+	    dma_addr_out);
+
+	/* incr sgel */
+	psge += ioc->sge_size;
+
+	/* READ sgel last */
+	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+	    MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
+	    MPI2_SGE_FLAGS_END_OF_LIST);
+	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+	dma_addr_in =  pci_map_single(ioc->pdev, bio_data(rsp->bio),
+	      rsp->data_len, PCI_DMA_BIDIRECTIONAL);
+	if (!dma_addr_in) {
+		mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
+		goto unmap;
+	}
+
+	ioc->base_add_sg_single(psge, sgl_flags | (rsp->data_len + 4),
+	    dma_addr_in);
+
+	dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
+	    "sending smp request\n", ioc->name, __func__));
+
+	mpt2sas_base_put_smid_default(ioc, smid, 0 /* VF_ID */);
+	timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
+	    10*HZ);
+
+	if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
+		printk(MPT2SAS_ERR_FMT "%s : timeout\n",
+		    __func__, ioc->name);
+		_debug_dump_mf(mpi_request,
+		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
+		if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
+			issue_reset = 1;
+		goto issue_host_reset;
+	}
+
+	dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
+	    "complete\n", ioc->name, __func__));
+
+	if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
+
+		mpi_reply = ioc->transport_cmds.reply;
+
+		dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+		    "%s - reply data transfer size(%d)\n",
+		    ioc->name, __func__,
+		    le16_to_cpu(mpi_reply->ResponseDataLength)));
+
+		memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
+		req->sense_len = sizeof(*mpi_reply);
+		req->data_len = 0;
+		rsp->data_len -= mpi_reply->ResponseDataLength;
+
+	} else {
+		dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+		    "%s - no reply\n", ioc->name, __func__));
+		rc = -ENXIO;
+	}
+
+ issue_host_reset:
+	if (issue_reset) {
+		mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
+		    FORCE_BIG_HAMMER);
+		rc = -ETIMEDOUT;
+	}
+
+ unmap:
+	if (dma_addr_out)
+		pci_unmap_single(ioc->pdev, dma_addr_out, req->data_len,
+		    PCI_DMA_BIDIRECTIONAL);
+	if (dma_addr_in)
+		pci_unmap_single(ioc->pdev, dma_addr_in, rsp->data_len,
+		    PCI_DMA_BIDIRECTIONAL);
+
+ out:
+	ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
+	mutex_unlock(&ioc->transport_cmds.mutex);
+	return rc;
+}
+
+struct sas_function_template mpt2sas_transport_functions = {
+	.get_linkerrors		= transport_get_linkerrors,
+	.get_enclosure_identifier = transport_get_enclosure_identifier,
+	.get_bay_identifier	= transport_get_bay_identifier,
+	.phy_reset		= transport_phy_reset,
+	.smp_handler		= transport_smp_handler,
+};
+
+struct scsi_transport_template *mpt2sas_transport_template;