Merge branch 'fix/kconfig' into for-linus

13 files changed, 237 insertions, 73 deletions

diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index 38b351c7b979..ce76d9a8ca6e 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -32,7 +32,7 @@
 
 #define DRV_NAME		"enic"
 #define DRV_DESCRIPTION		"Cisco VIC Ethernet NIC Driver"
-#define DRV_VERSION		"2.1.1.13"
+#define DRV_VERSION		"2.1.1.24"
 #define DRV_COPYRIGHT		"Copyright 2008-2011 Cisco Systems, Inc"
 
 #define ENIC_BARS_MAX		6
@@ -74,6 +74,7 @@ struct enic {
 	struct vnic_dev *vdev;
 	struct timer_list notify_timer;
 	struct work_struct reset;
+	struct work_struct change_mtu_work;
 	struct msix_entry msix_entry[ENIC_INTR_MAX];
 	struct enic_msix_entry msix[ENIC_INTR_MAX];
 	u32 msg_enable;
@@ -93,7 +94,6 @@ struct enic {
 	____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
 	spinlock_t wq_lock[ENIC_WQ_MAX];
 	unsigned int wq_count;
-	struct vlan_group *vlan_group;
 	u16 loop_enable;
 	u16 loop_tag;
 
diff --git a/drivers/net/enic/enic_dev.c b/drivers/net/enic/enic_dev.c
index 90687b14e60f..fd6247b3c0ee 100644
--- a/drivers/net/enic/enic_dev.c
+++ b/drivers/net/enic/enic_dev.c
@@ -166,6 +166,17 @@ int enic_dev_disable(struct enic *enic)
 	return err;
 }
 
+int enic_dev_intr_coal_timer_info(struct enic *enic)
+{
+	int err;
+
+	spin_lock(&enic->devcmd_lock);
+	err = vnic_dev_intr_coal_timer_info(enic->vdev);
+	spin_unlock(&enic->devcmd_lock);
+
+	return err;
+}
+
 int enic_vnic_dev_deinit(struct enic *enic)
 {
 	int err;
diff --git a/drivers/net/enic/enic_dev.h b/drivers/net/enic/enic_dev.h
index d5f681337626..ff8e87fdfc1d 100644
--- a/drivers/net/enic/enic_dev.h
+++ b/drivers/net/enic/enic_dev.h
@@ -34,6 +34,7 @@ int enic_dev_hang_notify(struct enic *enic);
 int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic);
 int enic_dev_enable(struct enic *enic);
 int enic_dev_disable(struct enic *enic);
+int enic_dev_intr_coal_timer_info(struct enic *enic);
 int enic_vnic_dev_deinit(struct enic *enic);
 int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp);
 int enic_dev_deinit_done(struct enic *enic, int *status);
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 2f433fbfca0c..67a27cd304dd 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -23,6 +23,7 @@
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/workqueue.h>
 #include <linux/pci.h>
 #include <linux/netdevice.h>
@@ -152,12 +153,12 @@ static inline unsigned int enic_legacy_notify_intr(void)
 
 static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq)
 {
-	return rq;
+	return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
 }
 
 static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq)
 {
-	return enic->rq_count + wq;
+	return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
 }
 
 static inline unsigned int enic_msix_err_intr(struct enic *enic)
@@ -283,12 +284,10 @@ static int enic_set_coalesce(struct net_device *netdev,
 	u32 rx_coalesce_usecs;
 	unsigned int i, intr;
 
-	tx_coalesce_usecs = min_t(u32,
-		INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
-		ecmd->tx_coalesce_usecs);
-	rx_coalesce_usecs = min_t(u32,
-		INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
-		ecmd->rx_coalesce_usecs);
+	tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
+		vnic_dev_get_intr_coal_timer_max(enic->vdev));
+	rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
+		vnic_dev_get_intr_coal_timer_max(enic->vdev));
 
 	switch (vnic_dev_get_intr_mode(enic->vdev)) {
 	case VNIC_DEV_INTR_MODE_INTX:
@@ -297,26 +296,26 @@ static int enic_set_coalesce(struct net_device *netdev,
 
 		intr = enic_legacy_io_intr();
 		vnic_intr_coalescing_timer_set(&enic->intr[intr],
-			INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+			tx_coalesce_usecs);
 		break;
 	case VNIC_DEV_INTR_MODE_MSI:
 		if (tx_coalesce_usecs != rx_coalesce_usecs)
 			return -EINVAL;
 
 		vnic_intr_coalescing_timer_set(&enic->intr[0],
-			INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+			tx_coalesce_usecs);
 		break;
 	case VNIC_DEV_INTR_MODE_MSIX:
 		for (i = 0; i < enic->wq_count; i++) {
 			intr = enic_msix_wq_intr(enic, i);
 			vnic_intr_coalescing_timer_set(&enic->intr[intr],
-				INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+				tx_coalesce_usecs);
 		}
 
 		for (i = 0; i < enic->rq_count; i++) {
 			intr = enic_msix_rq_intr(enic, i);
 			vnic_intr_coalescing_timer_set(&enic->intr[intr],
-				INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs));
+				rx_coalesce_usecs);
 		}
 
 		break;
@@ -423,11 +422,18 @@ static void enic_mtu_check(struct enic *enic)
 
 	if (mtu && mtu != enic->port_mtu) {
 		enic->port_mtu = mtu;
-		if (mtu < netdev->mtu)
-			netdev_warn(netdev,
-				"interface MTU (%d) set higher "
-				"than switch port MTU (%d)\n",
-				netdev->mtu, mtu);
+		if (enic_is_dynamic(enic)) {
+			mtu = max_t(int, ENIC_MIN_MTU,
+				min_t(int, ENIC_MAX_MTU, mtu));
+			if (mtu != netdev->mtu)
+				schedule_work(&enic->change_mtu_work);
+		} else {
+			if (mtu < netdev->mtu)
+				netdev_warn(netdev,
+					"interface MTU (%d) set higher "
+					"than switch port MTU (%d)\n",
+					netdev->mtu, mtu);
+		}
 	}
 }
 
@@ -793,10 +799,10 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
 }
 
 /* dev_base_lock rwlock held, nominally process context */
-static struct net_device_stats *enic_get_stats(struct net_device *netdev)
+static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev,
+						struct rtnl_link_stats64 *net_stats)
 {
 	struct enic *enic = netdev_priv(netdev);
-	struct net_device_stats *net_stats = &netdev->stats;
 	struct vnic_stats *stats;
 
 	enic_dev_stats_dump(enic, &stats);
@@ -1023,14 +1029,6 @@ static void enic_set_rx_mode(struct net_device *netdev)
 	}
 }
 
-/* rtnl lock is held */
-static void enic_vlan_rx_register(struct net_device *netdev,
-	struct vlan_group *vlan_group)
-{
-	struct enic *enic = netdev_priv(netdev);
-	enic->vlan_group = vlan_group;
-}
-
 /* netif_tx_lock held, BHs disabled */
 static void enic_tx_timeout(struct net_device *netdev)
 {
@@ -1258,24 +1256,13 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
 
 		skb->dev = netdev;
 
-		if (enic->vlan_group && vlan_stripped &&
-			(vlan_tci & CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK)) {
-
-			if (netdev->features & NETIF_F_GRO)
-				vlan_gro_receive(&enic->napi[q_number],
-					enic->vlan_group, vlan_tci, skb);
-			else
-				vlan_hwaccel_receive_skb(skb,
-					enic->vlan_group, vlan_tci);
-
-		} else {
+		if (vlan_stripped)
+			__vlan_hwaccel_put_tag(skb, vlan_tci);
 
-			if (netdev->features & NETIF_F_GRO)
-				napi_gro_receive(&enic->napi[q_number], skb);
-			else
-				netif_receive_skb(skb);
-
-		}
+		if (netdev->features & NETIF_F_GRO)
+			napi_gro_receive(&enic->napi[q_number], skb);
+		else
+			netif_receive_skb(skb);
 	} else {
 
 		/* Buffer overflow
@@ -1560,7 +1547,7 @@ static void enic_notify_timer_start(struct enic *enic)
 	default:
 		/* Using intr for notification for INTx/MSI-X */
 		break;
-	};
+	}
 }
 
 /* rtnl lock is held, process context */
@@ -1688,6 +1675,9 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
 	if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU)
 		return -EINVAL;
 
+	if (enic_is_dynamic(enic))
+		return -EOPNOTSUPP;
+
 	if (running)
 		enic_stop(netdev);
 
@@ -1704,6 +1694,55 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
 	return 0;
 }
 
+static void enic_change_mtu_work(struct work_struct *work)
+{
+	struct enic *enic = container_of(work, struct enic, change_mtu_work);
+	struct net_device *netdev = enic->netdev;
+	int new_mtu = vnic_dev_mtu(enic->vdev);
+	int err;
+	unsigned int i;
+
+	new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu));
+
+	rtnl_lock();
+
+	/* Stop RQ */
+	del_timer_sync(&enic->notify_timer);
+
+	for (i = 0; i < enic->rq_count; i++)
+		napi_disable(&enic->napi[i]);
+
+	vnic_intr_mask(&enic->intr[0]);
+	enic_synchronize_irqs(enic);
+	err = vnic_rq_disable(&enic->rq[0]);
+	if (err) {
+		netdev_err(netdev, "Unable to disable RQ.\n");
+		return;
+	}
+	vnic_rq_clean(&enic->rq[0], enic_free_rq_buf);
+	vnic_cq_clean(&enic->cq[0]);
+	vnic_intr_clean(&enic->intr[0]);
+
+	/* Fill RQ with new_mtu-sized buffers */
+	netdev->mtu = new_mtu;
+	vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf);
+	/* Need at least one buffer on ring to get going */
+	if (vnic_rq_desc_used(&enic->rq[0]) == 0) {
+		netdev_err(netdev, "Unable to alloc receive buffers.\n");
+		return;
+	}
+
+	/* Start RQ */
+	vnic_rq_enable(&enic->rq[0]);
+	napi_enable(&enic->napi[0]);
+	vnic_intr_unmask(&enic->intr[0]);
+	enic_notify_timer_start(enic);
+
+	rtnl_unlock();
+
+	netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu);
+}
+
 #ifdef CONFIG_NET_POLL_CONTROLLER
 static void enic_poll_controller(struct net_device *netdev)
 {
@@ -1718,8 +1757,12 @@ static void enic_poll_controller(struct net_device *netdev)
 			enic_isr_msix_rq(enic->msix_entry[intr].vector,
 				&enic->napi[i]);
 		}
-		intr = enic_msix_wq_intr(enic, i);
-		enic_isr_msix_wq(enic->msix_entry[intr].vector, enic);
+
+		for (i = 0; i < enic->wq_count; i++) {
+			intr = enic_msix_wq_intr(enic, i);
+			enic_isr_msix_wq(enic->msix_entry[intr].vector, enic);
+		}
+
 		break;
 	case VNIC_DEV_INTR_MODE_MSI:
 		enic_isr_msi(enic->pdev->irq, enic);
@@ -2057,13 +2100,12 @@ static const struct net_device_ops enic_netdev_dynamic_ops = {
 	.ndo_open		= enic_open,
 	.ndo_stop		= enic_stop,
 	.ndo_start_xmit		= enic_hard_start_xmit,
-	.ndo_get_stats		= enic_get_stats,
+	.ndo_get_stats64	= enic_get_stats,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_rx_mode	= enic_set_rx_mode,
 	.ndo_set_multicast_list	= enic_set_rx_mode,
 	.ndo_set_mac_address	= enic_set_mac_address_dynamic,
 	.ndo_change_mtu		= enic_change_mtu,
-	.ndo_vlan_rx_register	= enic_vlan_rx_register,
 	.ndo_vlan_rx_add_vid	= enic_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid	= enic_vlan_rx_kill_vid,
 	.ndo_tx_timeout		= enic_tx_timeout,
@@ -2079,13 +2121,12 @@ static const struct net_device_ops enic_netdev_ops = {
 	.ndo_open		= enic_open,
 	.ndo_stop		= enic_stop,
 	.ndo_start_xmit		= enic_hard_start_xmit,
-	.ndo_get_stats		= enic_get_stats,
+	.ndo_get_stats64	= enic_get_stats,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_mac_address	= enic_set_mac_address,
 	.ndo_set_rx_mode	= enic_set_rx_mode,
 	.ndo_set_multicast_list	= enic_set_rx_mode,
 	.ndo_change_mtu		= enic_change_mtu,
-	.ndo_vlan_rx_register	= enic_vlan_rx_register,
 	.ndo_vlan_rx_add_vid	= enic_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid	= enic_vlan_rx_kill_vid,
 	.ndo_tx_timeout		= enic_tx_timeout,
@@ -2112,6 +2153,14 @@ static int enic_dev_init(struct enic *enic)
 	unsigned int i;
 	int err;
 
+	/* Get interrupt coalesce timer info */
+	err = enic_dev_intr_coal_timer_info(enic);
+	if (err) {
+		dev_warn(dev, "Using default conversion factor for "
+			"interrupt coalesce timer\n");
+		vnic_dev_intr_coal_timer_info_default(enic->vdev);
+	}
+
 	/* Get vNIC configuration
 	 */
 
@@ -2345,6 +2394,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
 	enic->notify_timer.data = (unsigned long)enic;
 
 	INIT_WORK(&enic->reset, enic_reset);
+	INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work);
 
 	for (i = 0; i < enic->wq_count; i++)
 		spin_lock_init(&enic->wq_lock[i]);
@@ -2427,6 +2477,7 @@ static void __devexit enic_remove(struct pci_dev *pdev)
 		struct enic *enic = netdev_priv(netdev);
 
 		cancel_work_sync(&enic->reset);
+		cancel_work_sync(&enic->change_mtu_work);
 		unregister_netdev(netdev);
 		enic_dev_deinit(enic);
 		vnic_dev_close(enic->vdev);
diff --git a/drivers/net/enic/enic_res.c b/drivers/net/enic/enic_res.c
index 6e5c6356e7df..4a35367de790 100644
--- a/drivers/net/enic/enic_res.c
+++ b/drivers/net/enic/enic_res.c
@@ -90,18 +90,30 @@ int enic_get_vnic_config(struct enic *enic)
 		max_t(u16, ENIC_MIN_MTU,
 		c->mtu));
 
-	c->intr_timer_usec = min_t(u32,
-		INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
-		c->intr_timer_usec);
+	c->intr_timer_usec = min_t(u32, c->intr_timer_usec,
+		vnic_dev_get_intr_coal_timer_max(enic->vdev));
 
 	dev_info(enic_get_dev(enic),
 		"vNIC MAC addr %pM wq/rq %d/%d mtu %d\n",
 		enic->mac_addr, c->wq_desc_count, c->rq_desc_count, c->mtu);
-	dev_info(enic_get_dev(enic), "vNIC csum tx/rx %d/%d "
-		"tso %d intr timer %d usec rss %d\n",
-		ENIC_SETTING(enic, TXCSUM), ENIC_SETTING(enic, RXCSUM),
-		ENIC_SETTING(enic, TSO),
-		c->intr_timer_usec, ENIC_SETTING(enic, RSS));
+
+	dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s "
+		"tso/lro %s/%s rss %s intr mode %s type %s timer %d usec "
+		"loopback tag 0x%04x\n",
+		ENIC_SETTING(enic, TXCSUM) ? "yes" : "no",
+		ENIC_SETTING(enic, RXCSUM) ? "yes" : "no",
+		ENIC_SETTING(enic, TSO) ? "yes" : "no",
+		ENIC_SETTING(enic, LRO) ? "yes" : "no",
+		ENIC_SETTING(enic, RSS) ? "yes" : "no",
+		c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" :
+		c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" :
+		c->intr_mode == VENET_INTR_MODE_ANY ? "any" :
+		"unknown",
+		c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" :
+		c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" :
+		"unknown",
+		c->intr_timer_usec,
+		c->loop_tag);
 
 	return 0;
 }
@@ -290,7 +302,7 @@ void enic_init_vnic_resources(struct enic *enic)
 
 	for (i = 0; i < enic->intr_count; i++) {
 		vnic_intr_init(&enic->intr[i],
-			INTR_COALESCE_USEC_TO_HW(enic->config.intr_timer_usec),
+			enic->config.intr_timer_usec,
 			enic->config.intr_timer_type,
 			mask_on_assertion);
 	}
diff --git a/drivers/net/enic/vnic_cq.c b/drivers/net/enic/vnic_cq.c
index b86d6ef8dad3..0daa1c7073cb 100644
--- a/drivers/net/enic/vnic_cq.c
+++ b/drivers/net/enic/vnic_cq.c
@@ -74,6 +74,8 @@ void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
 	iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
 	iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
 	writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
+
+	cq->interrupt_offset = interrupt_offset;
 }
 
 void vnic_cq_clean(struct vnic_cq *cq)
diff --git a/drivers/net/enic/vnic_cq.h b/drivers/net/enic/vnic_cq.h
index 552d3daf2508..579315cbe803 100644
--- a/drivers/net/enic/vnic_cq.h
+++ b/drivers/net/enic/vnic_cq.h
@@ -57,6 +57,7 @@ struct vnic_cq {
 	struct vnic_dev_ring ring;
 	unsigned int to_clean;
 	unsigned int last_color;
+	unsigned int interrupt_offset;
 };
 
 static inline unsigned int vnic_cq_service(struct vnic_cq *cq,
diff --git a/drivers/net/enic/vnic_dev.c b/drivers/net/enic/vnic_dev.c
index 68f24ae860ae..8c4c8cf486f6 100644
--- a/drivers/net/enic/vnic_dev.c
+++ b/drivers/net/enic/vnic_dev.c
@@ -40,6 +40,12 @@ struct vnic_res {
 	unsigned int count;
 };
 
+struct vnic_intr_coal_timer_info {
+	u32 mul;
+	u32 div;
+	u32 max_usec;
+};
+
 struct vnic_dev {
 	void *priv;
 	struct pci_dev *pdev;
@@ -58,6 +64,7 @@ struct vnic_dev {
 	enum vnic_proxy_type proxy;
 	u32 proxy_index;
 	u64 args[VNIC_DEVCMD_NARGS];
+	struct vnic_intr_coal_timer_info intr_coal_timer_info;
 };
 
 #define VNIC_MAX_RES_HDR_SIZE \
@@ -794,6 +801,42 @@ int vnic_dev_deinit(struct vnic_dev *vdev)
 	return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
 }
 
+void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
+{
+	/* Default: hardware intr coal timer is in units of 1.5 usecs */
+	vdev->intr_coal_timer_info.mul = 2;
+	vdev->intr_coal_timer_info.div = 3;
+	vdev->intr_coal_timer_info.max_usec =
+		vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
+}
+
+int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev)
+{
+	int wait = 1000;
+	int err;
+
+	memset(vdev->args, 0, sizeof(vdev->args));
+
+	err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait);
+
+	/* Use defaults when firmware doesn't support the devcmd at all or
+	 * supports it for only specific hardware
+	 */
+	if ((err == ERR_ECMDUNKNOWN) ||
+		(!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) {
+		pr_warning("Using default conversion factor for "
+			"interrupt coalesce timer\n");
+		vnic_dev_intr_coal_timer_info_default(vdev);
+		return 0;
+	}
+
+	vdev->intr_coal_timer_info.mul = (u32) vdev->args[0];
+	vdev->intr_coal_timer_info.div = (u32) vdev->args[1];
+	vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2];
+
+	return err;
+}
+
 int vnic_dev_link_status(struct vnic_dev *vdev)
 {
 	if (!vnic_dev_notify_ready(vdev))
@@ -838,6 +881,23 @@ enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
 	return vdev->intr_mode;
 }
 
+u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
+{
+	return (usec * vdev->intr_coal_timer_info.mul) /
+		vdev->intr_coal_timer_info.div;
+}
+
+u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
+{
+	return (hw_cycles * vdev->intr_coal_timer_info.div) /
+		vdev->intr_coal_timer_info.mul;
+}
+
+u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
+{
+	return vdev->intr_coal_timer_info.max_usec;
+}
+
 void vnic_dev_unregister(struct vnic_dev *vdev)
 {
 	if (vdev) {
diff --git a/drivers/net/enic/vnic_dev.h b/drivers/net/enic/vnic_dev.h
index cf482a2c9dd9..852b698fbe7d 100644
--- a/drivers/net/enic/vnic_dev.h
+++ b/drivers/net/enic/vnic_dev.h
@@ -109,11 +109,16 @@ int vnic_dev_open(struct vnic_dev *vdev, int arg);
 int vnic_dev_open_done(struct vnic_dev *vdev, int *done);
 int vnic_dev_init(struct vnic_dev *vdev, int arg);
 int vnic_dev_deinit(struct vnic_dev *vdev);
+void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev);
+int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev);
 int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg);
 int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done);
 void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
 	enum vnic_dev_intr_mode intr_mode);
 enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev);
+u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec);
+u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles);
+u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev);
 void vnic_dev_unregister(struct vnic_dev *vdev);
 int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
 	u8 ig_vlan_rewrite_mode);
diff --git a/drivers/net/enic/vnic_devcmd.h b/drivers/net/enic/vnic_devcmd.h
index c5569bfb47ac..8025e8808d61 100644
--- a/drivers/net/enic/vnic_devcmd.h
+++ b/drivers/net/enic/vnic_devcmd.h
@@ -318,6 +318,25 @@ enum vnic_devcmd_cmd {
 	 *             ERR_EINPROGRESS - command in a0 is still in progress
 	 */
 	CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49),
+
+	/*
+	 * Returns interrupt coalescing timer conversion factors.
+	 * After calling this devcmd, ENIC driver can convert
+	 * interrupt coalescing timer in usec into CPU cycles as follows:
+	 *
+	 *   intr_timer_cycles = intr_timer_usec * multiplier / divisor
+	 *
+	 * Interrupt coalescing timer in usecs can be obtained from
+	 * CPU cycles as follows:
+	 *
+	 *   intr_timer_usec = intr_timer_cycles * divisor / multiplier
+	 *
+	 * in: none
+	 * out: (u32)a0 = multiplier
+	 *      (u32)a1 = divisor
+	 *      (u32)a2 = maximum timer value in usec
+	 */
+	CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50),
 };
 
 /* CMD_ENABLE2 flags */
diff --git a/drivers/net/enic/vnic_enet.h b/drivers/net/enic/vnic_enet.h
index e8740e3704e4..609542848e02 100644
--- a/drivers/net/enic/vnic_enet.h
+++ b/drivers/net/enic/vnic_enet.h
@@ -20,10 +20,6 @@
 #ifndef _VNIC_ENIC_H_
 #define _VNIC_ENIC_H_
 
-/* Hardware intr coalesce timer is in units of 1.5us */
-#define INTR_COALESCE_USEC_TO_HW(usec) ((usec) * 2/3)
-#define INTR_COALESCE_HW_TO_USEC(usec) ((usec) * 3/2)
-
 /* Device-specific region: enet configuration */
 struct vnic_enet_config {
 	u32 flags;
@@ -51,4 +47,11 @@ struct vnic_enet_config {
 #define VENETF_RSSHASH_TCPIPV6_EX 0x400	/* Hash on TCP + IPv6 ext. fields */
 #define VENETF_LOOP		0x800	/* Loopback enabled */
 
+#define VENET_INTR_TYPE_MIN	0	/* Timer specs min interrupt spacing */
+#define VENET_INTR_TYPE_IDLE	1	/* Timer specs idle time before irq */
+
+#define VENET_INTR_MODE_ANY	0	/* Try MSI-X, then MSI, then INTx */
+#define VENET_INTR_MODE_MSI	1	/* Try MSI then INTx */
+#define VENET_INTR_MODE_INTX	2	/* Try INTx only */
+
 #endif /* _VNIC_ENIC_H_ */
diff --git a/drivers/net/enic/vnic_intr.c b/drivers/net/enic/vnic_intr.c
index 3873771d75cc..0ca107f7bc8c 100644
--- a/drivers/net/enic/vnic_intr.c
+++ b/drivers/net/enic/vnic_intr.c
@@ -46,7 +46,7 @@ int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
 	return 0;
 }
 
-void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
+void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
 	unsigned int coalescing_type, unsigned int mask_on_assertion)
 {
 	vnic_intr_coalescing_timer_set(intr, coalescing_timer);
@@ -56,9 +56,10 @@ void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
 }
 
 void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
-	unsigned int coalescing_timer)
+	u32 coalescing_timer)
 {
-	iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
+	iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,
+		coalescing_timer), &intr->ctrl->coalescing_timer);
 }
 
 void vnic_intr_clean(struct vnic_intr *intr)
diff --git a/drivers/net/enic/vnic_intr.h b/drivers/net/enic/vnic_intr.h
index 09dc0b73ff46..2b1636392294 100644
--- a/drivers/net/enic/vnic_intr.h
+++ b/drivers/net/enic/vnic_intr.h
@@ -24,8 +24,6 @@
 
 #include "vnic_dev.h"
 
-#define VNIC_INTR_TIMER_MAX		0xffff
-
 #define VNIC_INTR_TIMER_TYPE_ABS	0
 #define VNIC_INTR_TIMER_TYPE_QUIET	1
 
@@ -104,10 +102,10 @@ static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba)
 void vnic_intr_free(struct vnic_intr *intr);
 int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
 	unsigned int index);
-void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
+void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
 	unsigned int coalescing_type, unsigned int mask_on_assertion);
 void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
-	unsigned int coalescing_timer);
+	u32 coalescing_timer);
 void vnic_intr_clean(struct vnic_intr *intr);
 
 #endif /* _VNIC_INTR_H_ */