Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (30 commits)
  RDMA/cxgb3: Enforce required firmware
  IB/mlx4: Unregister IB device prior to CLOSE PORT command
  mlx4_core: Add link type autosensing
  mlx4_core: Don't perform SET_PORT command for Ethernet ports
  RDMA/nes: Handle MPA Reject message properly
  RDMA/nes: Improve use of PBLs
  RDMA/nes: Remove LLTX
  RDMA/nes: Inform hardware that asynchronous event has been handled
  RDMA/nes: Fix tmp_addr compilation warning
  RDMA/nes: Report correct vendor_id and vendor_part_id
  RDMA/nes: Update copyright to new legal entity and year
  RDMA/nes: Account for freed PBL after HW operation
  IB: Remove useless ibdev_is_alive() tests from sysfs code
  IB/sa_query: Fix AH leak due to update_sm_ah() race
  IB/mad: Fix ib_post_send_mad() returning 0 with no generate send comp
  IB/mad: initialize mad_agent_priv before putting on lists
  IB/mad: Fix null pointer dereference in local_completions()
  IB/mad: Fix RMPP header RRespTime manipulation
  IB/iser: Remove hard setting of path MTU
  mlx4_core: Add device IDs for MT25458 10GigE devices
  ...

7 files changed, 279 insertions, 57 deletions

diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
index a7a97bf998f..21040a0d81f 100644
--- a/drivers/net/mlx4/Makefile
+++ b/drivers/net/mlx4/Makefile
@@ -1,7 +1,7 @@
 obj-$(CONFIG_MLX4_CORE)		+= mlx4_core.o
 
 mlx4_core-y :=	alloc.o catas.o cmd.o cq.o eq.o fw.o icm.o intf.o main.o mcg.o \
-		mr.o pd.o port.o profile.o qp.o reset.o srq.o
+		mr.o pd.o port.o profile.o qp.o reset.o sense.o srq.o
 
 obj-$(CONFIG_MLX4_EN)               += mlx4_en.o
 
diff --git a/drivers/net/mlx4/catas.c b/drivers/net/mlx4/catas.c
index f094ee00c41..aa9674b7f19 100644
--- a/drivers/net/mlx4/catas.c
+++ b/drivers/net/mlx4/catas.c
@@ -42,7 +42,6 @@ enum {
 static DEFINE_SPINLOCK(catas_lock);
 
 static LIST_HEAD(catas_list);
-static struct workqueue_struct *catas_wq;
 static struct work_struct catas_work;
 
 static int internal_err_reset = 1;
@@ -77,7 +76,7 @@ static void poll_catas(unsigned long dev_ptr)
 			list_add(&priv->catas_err.list, &catas_list);
 			spin_unlock(&catas_lock);
 
-			queue_work(catas_wq, &catas_work);
+			queue_work(mlx4_wq, &catas_work);
 		}
 	} else
 		mod_timer(&priv->catas_err.timer,
@@ -146,18 +145,7 @@ void mlx4_stop_catas_poll(struct mlx4_dev *dev)
 	spin_unlock_irq(&catas_lock);
 }
 
-int __init mlx4_catas_init(void)
+void  __init mlx4_catas_init(void)
 {
 	INIT_WORK(&catas_work, catas_reset);
-
-	catas_wq = create_singlethread_workqueue("mlx4_err");
-	if (!catas_wq)
-		return -ENOMEM;
-
-	return 0;
-}
-
-void mlx4_catas_cleanup(void)
-{
-	destroy_workqueue(catas_wq);
 }
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c
index 2c19bff7cba..8830dcb92ec 100644
--- a/drivers/net/mlx4/eq.c
+++ b/drivers/net/mlx4/eq.c
@@ -163,6 +163,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
 	int cqn;
 	int eqes_found = 0;
 	int set_ci = 0;
+	int port;
 
 	while ((eqe = next_eqe_sw(eq))) {
 		/*
@@ -203,11 +204,16 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
 			break;
 
 		case MLX4_EVENT_TYPE_PORT_CHANGE:
-			mlx4_dispatch_event(dev,
-					    eqe->subtype == MLX4_PORT_CHANGE_SUBTYPE_ACTIVE ?
-					    MLX4_DEV_EVENT_PORT_UP :
-					    MLX4_DEV_EVENT_PORT_DOWN,
-					    be32_to_cpu(eqe->event.port_change.port) >> 28);
+			port = be32_to_cpu(eqe->event.port_change.port) >> 28;
+			if (eqe->subtype == MLX4_PORT_CHANGE_SUBTYPE_DOWN) {
+				mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_DOWN,
+						    port);
+				mlx4_priv(dev)->sense.do_sense_port[port] = 1;
+			} else {
+				mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_UP,
+						    port);
+				mlx4_priv(dev)->sense.do_sense_port[port] = 0;
+			}
 			break;
 
 		case MLX4_EVENT_TYPE_CQ_ERROR:
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 6ef2490d5c3..a66f5b2fd28 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -51,6 +51,8 @@ MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(DRV_VERSION);
 
+struct workqueue_struct *mlx4_wq;
+
 #ifdef CONFIG_MLX4_DEBUG
 
 int mlx4_debug_level = 0;
@@ -98,24 +100,23 @@ module_param_named(use_prio, use_prio, bool, 0444);
 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
 		  "(0/1, default 0)");
 
-static int mlx4_check_port_params(struct mlx4_dev *dev,
-				  enum mlx4_port_type *port_type)
+int mlx4_check_port_params(struct mlx4_dev *dev,
+			   enum mlx4_port_type *port_type)
 {
 	int i;
 
 	for (i = 0; i < dev->caps.num_ports - 1; i++) {
-		if (port_type[i] != port_type[i+1] &&
-		    !(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
-			mlx4_err(dev, "Only same port types supported "
-				 "on this HCA, aborting.\n");
-			return -EINVAL;
+		if (port_type[i] != port_type[i + 1]) {
+			if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
+				mlx4_err(dev, "Only same port types supported "
+					 "on this HCA, aborting.\n");
+				return -EINVAL;
+			}
+			if (port_type[i] == MLX4_PORT_TYPE_ETH &&
+			    port_type[i + 1] == MLX4_PORT_TYPE_IB)
+				return -EINVAL;
 		}
 	}
-	if ((port_type[0] == MLX4_PORT_TYPE_ETH) &&
-	    (port_type[1] == MLX4_PORT_TYPE_IB)) {
-		mlx4_err(dev, "eth-ib configuration is not supported.\n");
-		return -EINVAL;
-	}
 
 	for (i = 0; i < dev->caps.num_ports; i++) {
 		if (!(port_type[i] & dev->caps.supported_type[i+1])) {
@@ -225,6 +226,9 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 			dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
 		else
 			dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
+		dev->caps.possible_type[i] = dev->caps.port_type[i];
+		mlx4_priv(dev)->sense.sense_allowed[i] =
+			dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO;
 
 		if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
 			dev->caps.log_num_macs = dev_cap->log_max_macs[i];
@@ -263,14 +267,16 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
  * Change the port configuration of the device.
  * Every user of this function must hold the port mutex.
  */
-static int mlx4_change_port_types(struct mlx4_dev *dev,
-				  enum mlx4_port_type *port_types)
+int mlx4_change_port_types(struct mlx4_dev *dev,
+			   enum mlx4_port_type *port_types)
 {
 	int err = 0;
 	int change = 0;
 	int port;
 
 	for (port = 0; port <  dev->caps.num_ports; port++) {
+		/* Change the port type only if the new type is different
+		 * from the current, and not set to Auto */
 		if (port_types[port] != dev->caps.port_type[port + 1]) {
 			change = 1;
 			dev->caps.port_type[port + 1] = port_types[port];
@@ -302,10 +308,17 @@ static ssize_t show_port_type(struct device *dev,
 	struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
 						   port_attr);
 	struct mlx4_dev *mdev = info->dev;
+	char type[8];
+
+	sprintf(type, "%s",
+		(mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
+		"ib" : "eth");
+	if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
+		sprintf(buf, "auto (%s)\n", type);
+	else
+		sprintf(buf, "%s\n", type);
 
-	return sprintf(buf, "%s\n",
-		       mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB ?
-		       "ib" : "eth");
+	return strlen(buf);
 }
 
 static ssize_t set_port_type(struct device *dev,
@@ -317,6 +330,7 @@ static ssize_t set_port_type(struct device *dev,
 	struct mlx4_dev *mdev = info->dev;
 	struct mlx4_priv *priv = mlx4_priv(mdev);
 	enum mlx4_port_type types[MLX4_MAX_PORTS];
+	enum mlx4_port_type new_types[MLX4_MAX_PORTS];
 	int i;
 	int err = 0;
 
@@ -324,26 +338,56 @@ static ssize_t set_port_type(struct device *dev,
 		info->tmp_type = MLX4_PORT_TYPE_IB;
 	else if (!strcmp(buf, "eth\n"))
 		info->tmp_type = MLX4_PORT_TYPE_ETH;
+	else if (!strcmp(buf, "auto\n"))
+		info->tmp_type = MLX4_PORT_TYPE_AUTO;
 	else {
 		mlx4_err(mdev, "%s is not supported port type\n", buf);
 		return -EINVAL;
 	}
 
+	mlx4_stop_sense(mdev);
 	mutex_lock(&priv->port_mutex);
-	for (i = 0; i < mdev->caps.num_ports; i++)
+	/* Possible type is always the one that was delivered */
+	mdev->caps.possible_type[info->port] = info->tmp_type;
+
+	for (i = 0; i < mdev->caps.num_ports; i++) {
 		types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
-					mdev->caps.port_type[i+1];
+					mdev->caps.possible_type[i+1];
+		if (types[i] == MLX4_PORT_TYPE_AUTO)
+			types[i] = mdev->caps.port_type[i+1];
+	}
 
-	err = mlx4_check_port_params(mdev, types);
+	if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
+		for (i = 1; i <= mdev->caps.num_ports; i++) {
+			if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
+				mdev->caps.possible_type[i] = mdev->caps.port_type[i];
+				err = -EINVAL;
+			}
+		}
+	}
+	if (err) {
+		mlx4_err(mdev, "Auto sensing is not supported on this HCA. "
+			       "Set only 'eth' or 'ib' for both ports "
+			       "(should be the same)\n");
+		goto out;
+	}
+
+	mlx4_do_sense_ports(mdev, new_types, types);
+
+	err = mlx4_check_port_params(mdev, new_types);
 	if (err)
 		goto out;
 
-	for (i = 1; i <= mdev->caps.num_ports; i++)
-		priv->port[i].tmp_type = 0;
+	/* We are about to apply the changes after the configuration
+	 * was verified, no need to remember the temporary types
+	 * any more */
+	for (i = 0; i < mdev->caps.num_ports; i++)
+		priv->port[i + 1].tmp_type = 0;
 
-	err = mlx4_change_port_types(mdev, types);
+	err = mlx4_change_port_types(mdev, new_types);
 
 out:
+	mlx4_start_sense(mdev);
 	mutex_unlock(&priv->port_mutex);
 	return err ? err : count;
 }
@@ -1117,6 +1161,9 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (err)
 		goto err_port;
 
+	mlx4_sense_init(dev);
+	mlx4_start_sense(dev);
+
 	pci_set_drvdata(pdev, dev);
 
 	return 0;
@@ -1182,6 +1229,7 @@ static void mlx4_remove_one(struct pci_dev *pdev)
 	int p;
 
 	if (dev) {
+		mlx4_stop_sense(dev);
 		mlx4_unregister_device(dev);
 
 		for (p = 1; p <= dev->caps.num_ports; p++) {
@@ -1230,6 +1278,8 @@ static struct pci_device_id mlx4_pci_table[] = {
 	{ PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
 	{ PCI_VDEVICE(MELLANOX, 0x6368) }, /* MT25408 "Hermon" EN 10GigE */
 	{ PCI_VDEVICE(MELLANOX, 0x6750) }, /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
+	{ PCI_VDEVICE(MELLANOX, 0x6372) }, /* MT25458 ConnectX EN 10GBASE-T 10GigE */
+	{ PCI_VDEVICE(MELLANOX, 0x675a) }, /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
 	{ 0, }
 };
 
@@ -1264,9 +1314,11 @@ static int __init mlx4_init(void)
 	if (mlx4_verify_params())
 		return -EINVAL;
 
-	ret = mlx4_catas_init();
-	if (ret)
-		return ret;
+	mlx4_catas_init();
+
+	mlx4_wq = create_singlethread_workqueue("mlx4");
+	if (!mlx4_wq)
+		return -ENOMEM;
 
 	ret = pci_register_driver(&mlx4_driver);
 	return ret < 0 ? ret : 0;
@@ -1275,7 +1327,7 @@ static int __init mlx4_init(void)
 static void __exit mlx4_cleanup(void)
 {
 	pci_unregister_driver(&mlx4_driver);
-	mlx4_catas_cleanup();
+	destroy_workqueue(mlx4_wq);
 }
 
 module_init(mlx4_init);
diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
index e0213bad61c..5bd79c2b184 100644
--- a/drivers/net/mlx4/mlx4.h
+++ b/drivers/net/mlx4/mlx4.h
@@ -40,6 +40,7 @@
 #include <linux/mutex.h>
 #include <linux/radix-tree.h>
 #include <linux/timer.h>
+#include <linux/workqueue.h>
 
 #include <linux/mlx4/device.h>
 #include <linux/mlx4/driver.h>
@@ -276,6 +277,13 @@ struct mlx4_port_info {
 	struct mlx4_vlan_table	vlan_table;
 };
 
+struct mlx4_sense {
+	struct mlx4_dev		*dev;
+	u8			do_sense_port[MLX4_MAX_PORTS + 1];
+	u8			sense_allowed[MLX4_MAX_PORTS + 1];
+	struct delayed_work	sense_poll;
+};
+
 struct mlx4_priv {
 	struct mlx4_dev		dev;
 
@@ -305,6 +313,7 @@ struct mlx4_priv {
 	struct mlx4_uar		driver_uar;
 	void __iomem	       *kar;
 	struct mlx4_port_info	port[MLX4_MAX_PORTS + 1];
+	struct mlx4_sense       sense;
 	struct mutex		port_mutex;
 };
 
@@ -313,6 +322,10 @@ static inline struct mlx4_priv *mlx4_priv(struct mlx4_dev *dev)
 	return container_of(dev, struct mlx4_priv, dev);
 }
 
+#define MLX4_SENSE_RANGE	(HZ * 3)
+
+extern struct workqueue_struct *mlx4_wq;
+
 u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap);
 void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj);
 u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align);
@@ -346,8 +359,7 @@ void mlx4_cleanup_mcg_table(struct mlx4_dev *dev);
 
 void mlx4_start_catas_poll(struct mlx4_dev *dev);
 void mlx4_stop_catas_poll(struct mlx4_dev *dev);
-int mlx4_catas_init(void);
-void mlx4_catas_cleanup(void);
+void mlx4_catas_init(void);
 int mlx4_restart_one(struct pci_dev *pdev);
 int mlx4_register_device(struct mlx4_dev *dev);
 void mlx4_unregister_device(struct mlx4_dev *dev);
@@ -379,6 +391,17 @@ void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type);
 
 void mlx4_handle_catas_err(struct mlx4_dev *dev);
 
+void mlx4_do_sense_ports(struct mlx4_dev *dev,
+			 enum mlx4_port_type *stype,
+			 enum mlx4_port_type *defaults);
+void mlx4_start_sense(struct mlx4_dev *dev);
+void mlx4_stop_sense(struct mlx4_dev *dev);
+void mlx4_sense_init(struct mlx4_dev *dev);
+int mlx4_check_port_params(struct mlx4_dev *dev,
+			   enum mlx4_port_type *port_type);
+int mlx4_change_port_types(struct mlx4_dev *dev,
+			   enum mlx4_port_type *port_types);
+
 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table);
 void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table);
 
diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c
index 0a057e5dc63..7cce3342ef8 100644
--- a/drivers/net/mlx4/port.c
+++ b/drivers/net/mlx4/port.c
@@ -298,20 +298,17 @@ int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
 {
 	struct mlx4_cmd_mailbox *mailbox;
 	int err;
-	u8 is_eth = dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
 
 	mailbox = mlx4_alloc_cmd_mailbox(dev);
 	if (IS_ERR(mailbox))
 		return PTR_ERR(mailbox);
 
 	memset(mailbox->buf, 0, 256);
-	if (is_eth) {
-		((u8 *) mailbox->buf)[3] = 6;
-		((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15);
-		((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15);
-	} else
-		((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
-	err = mlx4_cmd(dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
+	if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
+		return 0;
+
+	((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
+	err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
 		       MLX4_CMD_TIME_CLASS_B);
 
 	mlx4_free_cmd_mailbox(dev, mailbox);
diff --git a/drivers/net/mlx4/sense.c b/drivers/net/mlx4/sense.c
new file mode 100644
index 00000000000..6d5089ecb5a
--- /dev/null
+++ b/drivers/net/mlx4/sense.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/errno.h>
+#include <linux/if_ether.h>
+
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4.h"
+
+static int mlx4_SENSE_PORT(struct mlx4_dev *dev, int port,
+			   enum mlx4_port_type *type)
+{
+	u64 out_param;
+	int err = 0;
+
+	err = mlx4_cmd_imm(dev, 0, &out_param, port, 0,
+			   MLX4_CMD_SENSE_PORT, MLX4_CMD_TIME_CLASS_B);
+	if (err) {
+		mlx4_err(dev, "Sense command failed for port: %d\n", port);
+		return err;
+	}
+
+	if (out_param > 2) {
+		mlx4_err(dev, "Sense returned illegal value: 0x%llx\n", out_param);
+		return EINVAL;
+	}
+
+	*type = out_param;
+	return 0;
+}
+
+void mlx4_do_sense_ports(struct mlx4_dev *dev,
+			 enum mlx4_port_type *stype,
+			 enum mlx4_port_type *defaults)
+{
+	struct mlx4_sense *sense = &mlx4_priv(dev)->sense;
+	int err;
+	int i;
+
+	for (i = 1; i <= dev->caps.num_ports; i++) {
+		stype[i - 1] = 0;
+		if (sense->do_sense_port[i] && sense->sense_allowed[i] &&
+		    dev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
+			err = mlx4_SENSE_PORT(dev, i, &stype[i - 1]);
+			if (err)
+				stype[i - 1] = defaults[i - 1];
+		} else
+			stype[i - 1] = defaults[i - 1];
+	}
+
+	/*
+	 * Adjust port configuration:
+	 * If port 1 sensed nothing and port 2 is IB, set both as IB
+	 * If port 2 sensed nothing and port 1 is Eth, set both as Eth
+	 */
+	if (stype[0] == MLX4_PORT_TYPE_ETH) {
+		for (i = 1; i < dev->caps.num_ports; i++)
+			stype[i] = stype[i] ? stype[i] : MLX4_PORT_TYPE_ETH;
+	}
+	if (stype[dev->caps.num_ports - 1] == MLX4_PORT_TYPE_IB) {
+		for (i = 0; i < dev->caps.num_ports - 1; i++)
+			stype[i] = stype[i] ? stype[i] : MLX4_PORT_TYPE_IB;
+	}
+
+	/*
+	 * If sensed nothing, remain in current configuration.
+	 */
+	for (i = 0; i < dev->caps.num_ports; i++)
+		stype[i] = stype[i] ? stype[i] : defaults[i];
+
+}
+
+static void mlx4_sense_port(struct work_struct *work)
+{
+	struct delayed_work *delay = container_of(work, struct delayed_work, work);
+	struct mlx4_sense *sense = container_of(delay, struct mlx4_sense,
+						sense_poll);
+	struct mlx4_dev *dev = sense->dev;
+	struct mlx4_priv *priv = mlx4_priv(dev);
+	enum mlx4_port_type stype[MLX4_MAX_PORTS];
+
+	mutex_lock(&priv->port_mutex);
+	mlx4_do_sense_ports(dev, stype, &dev->caps.port_type[1]);
+
+	if (mlx4_check_port_params(dev, stype))
+		goto sense_again;
+
+	if (mlx4_change_port_types(dev, stype))
+		mlx4_err(dev, "Failed to change port_types\n");
+
+sense_again:
+	mutex_unlock(&priv->port_mutex);
+	queue_delayed_work(mlx4_wq , &sense->sense_poll,
+			   round_jiffies_relative(MLX4_SENSE_RANGE));
+}
+
+void mlx4_start_sense(struct mlx4_dev *dev)
+{
+	struct mlx4_priv *priv = mlx4_priv(dev);
+	struct mlx4_sense *sense = &priv->sense;
+
+	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP))
+		return;
+
+	queue_delayed_work(mlx4_wq , &sense->sense_poll,
+			   round_jiffies_relative(MLX4_SENSE_RANGE));
+}
+
+void mlx4_stop_sense(struct mlx4_dev *dev)
+{
+	cancel_delayed_work_sync(&mlx4_priv(dev)->sense.sense_poll);
+}
+
+void  mlx4_sense_init(struct mlx4_dev *dev)
+{
+	struct mlx4_priv *priv = mlx4_priv(dev);
+	struct mlx4_sense *sense = &priv->sense;
+	int port;
+
+	sense->dev = dev;
+	for (port = 1; port <= dev->caps.num_ports; port++)
+		sense->do_sense_port[port] = 1;
+
+	INIT_DELAYED_WORK_DEFERRABLE(&sense->sense_poll, mlx4_sense_port);
+}