Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Conflicts:
	drivers/mtd/mtd_blkdevs.c

Merge Grant's device-tree bits so that we can apply the subsequent fixes.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 3264 insertions, 0 deletions

diff --git a/drivers/net/bna/bnad.c b/drivers/net/bna/bnad.c
new file mode 100644
index 00000000000..7e839b9cec2
--- /dev/null
+++ b/drivers/net/bna/bnad.c
@@ -0,0 +1,3264 @@
+/*
+ * Linux network driver for Brocade Converged Network Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * 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.
+ */
+/*
+ * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ */
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/in.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/if_ether.h>
+#include <linux/ip.h>
+
+#include "bnad.h"
+#include "bna.h"
+#include "cna.h"
+
+static DEFINE_MUTEX(bnad_fwimg_mutex);
+
+/*
+ * Module params
+ */
+static uint bnad_msix_disable;
+module_param(bnad_msix_disable, uint, 0444);
+MODULE_PARM_DESC(bnad_msix_disable, "Disable MSIX mode");
+
+static uint bnad_ioc_auto_recover = 1;
+module_param(bnad_ioc_auto_recover, uint, 0444);
+MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery");
+
+/*
+ * Global variables
+ */
+u32 bnad_rxqs_per_cq = 2;
+
+static const u8 bnad_bcast_addr[] =  {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+/*
+ * Local MACROS
+ */
+#define BNAD_TX_UNMAPQ_DEPTH (bnad->txq_depth * 2)
+
+#define BNAD_RX_UNMAPQ_DEPTH (bnad->rxq_depth)
+
+#define BNAD_GET_MBOX_IRQ(_bnad)				\
+	(((_bnad)->cfg_flags & BNAD_CF_MSIX) ?			\
+	 ((_bnad)->msix_table[(_bnad)->msix_num - 1].vector) : 	\
+	 ((_bnad)->pcidev->irq))
+
+#define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _depth)	\
+do {								\
+	(_res_info)->res_type = BNA_RES_T_MEM;			\
+	(_res_info)->res_u.mem_info.mem_type = BNA_MEM_T_KVA;	\
+	(_res_info)->res_u.mem_info.num = (_num);		\
+	(_res_info)->res_u.mem_info.len =			\
+	sizeof(struct bnad_unmap_q) +				\
+	(sizeof(struct bnad_skb_unmap) * ((_depth) - 1));	\
+} while (0)
+
+/*
+ * Reinitialize completions in CQ, once Rx is taken down
+ */
+static void
+bnad_cq_cmpl_init(struct bnad *bnad, struct bna_ccb *ccb)
+{
+	struct bna_cq_entry *cmpl, *next_cmpl;
+	unsigned int wi_range, wis = 0, ccb_prod = 0;
+	int i;
+
+	BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt, cmpl,
+			    wi_range);
+
+	for (i = 0; i < ccb->q_depth; i++) {
+		wis++;
+		if (likely(--wi_range))
+			next_cmpl = cmpl + 1;
+		else {
+			BNA_QE_INDX_ADD(ccb_prod, wis, ccb->q_depth);
+			wis = 0;
+			BNA_CQ_QPGE_PTR_GET(ccb_prod, ccb->sw_qpt,
+						next_cmpl, wi_range);
+		}
+		cmpl->valid = 0;
+		cmpl = next_cmpl;
+	}
+}
+
+/*
+ * Frees all pending Tx Bufs
+ * At this point no activity is expected on the Q,
+ * so DMA unmap & freeing is fine.
+ */
+static void
+bnad_free_all_txbufs(struct bnad *bnad,
+		 struct bna_tcb *tcb)
+{
+	u16 		unmap_cons;
+	struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+	struct bnad_skb_unmap *unmap_array;
+	struct sk_buff 		*skb = NULL;
+	int			i;
+
+	unmap_array = unmap_q->unmap_array;
+
+	unmap_cons = 0;
+	while (unmap_cons < unmap_q->q_depth) {
+		skb = unmap_array[unmap_cons].skb;
+		if (!skb) {
+			unmap_cons++;
+			continue;
+		}
+		unmap_array[unmap_cons].skb = NULL;
+
+		pci_unmap_single(bnad->pcidev,
+				 pci_unmap_addr(&unmap_array[unmap_cons],
+						dma_addr), skb_headlen(skb),
+						PCI_DMA_TODEVICE);
+
+		pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
+		unmap_cons++;
+		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			pci_unmap_page(bnad->pcidev,
+				       pci_unmap_addr(&unmap_array[unmap_cons],
+						      dma_addr),
+				       skb_shinfo(skb)->frags[i].size,
+				       PCI_DMA_TODEVICE);
+			pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
+					   0);
+			unmap_cons++;
+		}
+		dev_kfree_skb_any(skb);
+	}
+}
+
+/* Data Path Handlers */
+
+/*
+ * bnad_free_txbufs : Frees the Tx bufs on Tx completion
+ * Can be called in a) Interrupt context
+ *		    b) Sending context
+ *		    c) Tasklet context
+ */
+static u32
+bnad_free_txbufs(struct bnad *bnad,
+		 struct bna_tcb *tcb)
+{
+	u32 		sent_packets = 0, sent_bytes = 0;
+	u16 		wis, unmap_cons, updated_hw_cons;
+	struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+	struct bnad_skb_unmap *unmap_array;
+	struct sk_buff 		*skb;
+	int i;
+
+	/*
+	 * Just return if TX is stopped. This check is useful
+	 * when bnad_free_txbufs() runs out of a tasklet scheduled
+	 * before bnad_cb_tx_cleanup() cleared BNAD_RF_TX_STARTED bit
+	 * but this routine runs actually after the cleanup has been
+	 * executed.
+	 */
+	if (!test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))
+		return 0;
+
+	updated_hw_cons = *(tcb->hw_consumer_index);
+
+	wis = BNA_Q_INDEX_CHANGE(tcb->consumer_index,
+				  updated_hw_cons, tcb->q_depth);
+
+	BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth)));
+
+	unmap_array = unmap_q->unmap_array;
+	unmap_cons = unmap_q->consumer_index;
+
+	prefetch(&unmap_array[unmap_cons + 1]);
+	while (wis) {
+		skb = unmap_array[unmap_cons].skb;
+
+		unmap_array[unmap_cons].skb = NULL;
+
+		sent_packets++;
+		sent_bytes += skb->len;
+		wis -= BNA_TXQ_WI_NEEDED(1 + skb_shinfo(skb)->nr_frags);
+
+		pci_unmap_single(bnad->pcidev,
+				 pci_unmap_addr(&unmap_array[unmap_cons],
+						dma_addr), skb_headlen(skb),
+				 PCI_DMA_TODEVICE);
+		pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr, 0);
+		BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
+
+		prefetch(&unmap_array[unmap_cons + 1]);
+		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			prefetch(&unmap_array[unmap_cons + 1]);
+
+			pci_unmap_page(bnad->pcidev,
+				       pci_unmap_addr(&unmap_array[unmap_cons],
+						      dma_addr),
+				       skb_shinfo(skb)->frags[i].size,
+				       PCI_DMA_TODEVICE);
+			pci_unmap_addr_set(&unmap_array[unmap_cons], dma_addr,
+					   0);
+			BNA_QE_INDX_ADD(unmap_cons, 1, unmap_q->q_depth);
+		}
+		dev_kfree_skb_any(skb);
+	}
+
+	/* Update consumer pointers. */
+	tcb->consumer_index = updated_hw_cons;
+	unmap_q->consumer_index = unmap_cons;
+
+	tcb->txq->tx_packets += sent_packets;
+	tcb->txq->tx_bytes += sent_bytes;
+
+	return sent_packets;
+}
+
+/* Tx Free Tasklet function */
+/* Frees for all the tcb's in all the Tx's */
+/*
+ * Scheduled from sending context, so that
+ * the fat Tx lock is not held for too long
+ * in the sending context.
+ */
+static void
+bnad_tx_free_tasklet(unsigned long bnad_ptr)
+{
+	struct bnad *bnad = (struct bnad *)bnad_ptr;
+	struct bna_tcb *tcb;
+	u32 		acked;
+	int			i, j;
+
+	for (i = 0; i < bnad->num_tx; i++) {
+		for (j = 0; j < bnad->num_txq_per_tx; j++) {
+			tcb = bnad->tx_info[i].tcb[j];
+			if (!tcb)
+				continue;
+			if (((u16) (*tcb->hw_consumer_index) !=
+				tcb->consumer_index) &&
+				(!test_and_set_bit(BNAD_TXQ_FREE_SENT,
+						  &tcb->flags))) {
+				acked = bnad_free_txbufs(bnad, tcb);
+				bna_ib_ack(tcb->i_dbell, acked);
+				smp_mb__before_clear_bit();
+				clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+			}
+		}
+	}
+}
+
+static u32
+bnad_tx(struct bnad *bnad, struct bna_tcb *tcb)
+{
+	struct net_device *netdev = bnad->netdev;
+	u32 sent;
+
+	if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
+		return 0;
+
+	sent = bnad_free_txbufs(bnad, tcb);
+	if (sent) {
+		if (netif_queue_stopped(netdev) &&
+		    netif_carrier_ok(netdev) &&
+		    BNA_QE_FREE_CNT(tcb, tcb->q_depth) >=
+				    BNAD_NETIF_WAKE_THRESHOLD) {
+			netif_wake_queue(netdev);
+			BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+		}
+		bna_ib_ack(tcb->i_dbell, sent);
+	} else
+		bna_ib_ack(tcb->i_dbell, 0);
+
+	smp_mb__before_clear_bit();
+	clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+
+	return sent;
+}
+
+/* MSIX Tx Completion Handler */
+static irqreturn_t
+bnad_msix_tx(int irq, void *data)
+{
+	struct bna_tcb *tcb = (struct bna_tcb *)data;
+	struct bnad *bnad = tcb->bnad;
+
+	bnad_tx(bnad, tcb);
+
+	return IRQ_HANDLED;
+}
+
+static void
+bnad_reset_rcb(struct bnad *bnad, struct bna_rcb *rcb)
+{
+	struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+	rcb->producer_index = 0;
+	rcb->consumer_index = 0;
+
+	unmap_q->producer_index = 0;
+	unmap_q->consumer_index = 0;
+}
+
+static void
+bnad_free_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
+{
+	struct bnad_unmap_q *unmap_q;
+	struct sk_buff *skb;
+
+	unmap_q = rcb->unmap_q;
+	while (BNA_QE_IN_USE_CNT(unmap_q, unmap_q->q_depth)) {
+		skb = unmap_q->unmap_array[unmap_q->consumer_index].skb;
+		BUG_ON(!(skb));
+		unmap_q->unmap_array[unmap_q->consumer_index].skb = NULL;
+		pci_unmap_single(bnad->pcidev, pci_unmap_addr(&unmap_q->
+					unmap_array[unmap_q->consumer_index],
+					dma_addr), rcb->rxq->buffer_size +
+					NET_IP_ALIGN, PCI_DMA_FROMDEVICE);
+		dev_kfree_skb(skb);
+		BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
+		BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
+	}
+
+	bnad_reset_rcb(bnad, rcb);
+}
+
+static void
+bnad_alloc_n_post_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
+{
+	u16 to_alloc, alloced, unmap_prod, wi_range;
+	struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+	struct bnad_skb_unmap *unmap_array;
+	struct bna_rxq_entry *rxent;
+	struct sk_buff *skb;
+	dma_addr_t dma_addr;
+
+	alloced = 0;
+	to_alloc =
+		BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth);
+
+	unmap_array = unmap_q->unmap_array;
+	unmap_prod = unmap_q->producer_index;
+
+	BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent, wi_range);
+
+	while (to_alloc--) {
+		if (!wi_range) {
+			BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent,
+					     wi_range);
+		}
+		skb = alloc_skb(rcb->rxq->buffer_size + NET_IP_ALIGN,
+				     GFP_ATOMIC);
+		if (unlikely(!skb)) {
+			BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed);
+			goto finishing;
+		}
+		skb->dev = bnad->netdev;
+		skb_reserve(skb, NET_IP_ALIGN);
+		unmap_array[unmap_prod].skb = skb;
+		dma_addr = pci_map_single(bnad->pcidev, skb->data,
+			rcb->rxq->buffer_size, PCI_DMA_FROMDEVICE);
+		pci_unmap_addr_set(&unmap_array[unmap_prod], dma_addr,
+				   dma_addr);
+		BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr);
+		BNA_QE_INDX_ADD(unmap_prod, 1, unmap_q->q_depth);
+
+		rxent++;
+		wi_range--;
+		alloced++;
+	}
+
+finishing:
+	if (likely(alloced)) {
+		unmap_q->producer_index = unmap_prod;
+		rcb->producer_index = unmap_prod;
+		smp_mb();
+		bna_rxq_prod_indx_doorbell(rcb);
+	}
+}
+
+/*
+ * Locking is required in the enable path
+ * because it is called from a napi poll
+ * context, where the bna_lock is not held
+ * unlike the IRQ context.
+ */
+static void
+bnad_enable_txrx_irqs(struct bnad *bnad)
+{
+	struct bna_tcb *tcb;
+	struct bna_ccb *ccb;
+	int i, j;
+	unsigned long flags;
+
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+	for (i = 0; i < bnad->num_tx; i++) {
+		for (j = 0; j < bnad->num_txq_per_tx; j++) {
+			tcb = bnad->tx_info[i].tcb[j];
+			bna_ib_coalescing_timer_set(tcb->i_dbell,
+				tcb->txq->ib->ib_config.coalescing_timeo);
+			bna_ib_ack(tcb->i_dbell, 0);
+		}
+	}
+
+	for (i = 0; i < bnad->num_rx; i++) {
+		for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+			ccb = bnad->rx_info[i].rx_ctrl[j].ccb;
+			bnad_enable_rx_irq_unsafe(ccb);
+		}
+	}
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+static inline void
+bnad_refill_rxq(struct bnad *bnad, struct bna_rcb *rcb)
+{
+	struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+	if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
+		if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
+			 >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
+			bnad_alloc_n_post_rxbufs(bnad, rcb);
+		smp_mb__before_clear_bit();
+		clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
+	}
+}
+
+static u32
+bnad_poll_cq(struct bnad *bnad, struct bna_ccb *ccb, int budget)
+{
+	struct bna_cq_entry *cmpl, *next_cmpl;
+	struct bna_rcb *rcb = NULL;
+	unsigned int wi_range, packets = 0, wis = 0;
+	struct bnad_unmap_q *unmap_q;
+	struct sk_buff *skb;
+	u32 flags;
+	u32 qid0 = ccb->rcb[0]->rxq->rxq_id;
+	struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate;
+
+	prefetch(bnad->netdev);
+	BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt, cmpl,
+			    wi_range);
+	BUG_ON(!(wi_range <= ccb->q_depth));
+	while (cmpl->valid && packets < budget) {
+		packets++;
+		BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length));
+
+		if (qid0 == cmpl->rxq_id)
+			rcb = ccb->rcb[0];
+		else
+			rcb = ccb->rcb[1];
+
+		unmap_q = rcb->unmap_q;
+
+		skb = unmap_q->unmap_array[unmap_q->consumer_index].skb;
+		BUG_ON(!(skb));
+		unmap_q->unmap_array[unmap_q->consumer_index].skb = NULL;
+		pci_unmap_single(bnad->pcidev,
+				 pci_unmap_addr(&unmap_q->
+						unmap_array[unmap_q->
+							    consumer_index],
+						dma_addr),
+						rcb->rxq->buffer_size,
+						PCI_DMA_FROMDEVICE);
+		BNA_QE_INDX_ADD(unmap_q->consumer_index, 1, unmap_q->q_depth);
+
+		/* Should be more efficient ? Performance ? */
+		BNA_QE_INDX_ADD(rcb->consumer_index, 1, rcb->q_depth);
+
+		wis++;
+		if (likely(--wi_range))
+			next_cmpl = cmpl + 1;
+		else {
+			BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
+			wis = 0;
+			BNA_CQ_QPGE_PTR_GET(ccb->producer_index, ccb->sw_qpt,
+						next_cmpl, wi_range);
+			BUG_ON(!(wi_range <= ccb->q_depth));
+		}
+		prefetch(next_cmpl);
+
+		flags = ntohl(cmpl->flags);
+		if (unlikely
+		    (flags &
+		     (BNA_CQ_EF_MAC_ERROR | BNA_CQ_EF_FCS_ERROR |
+		      BNA_CQ_EF_TOO_LONG))) {
+			dev_kfree_skb_any(skb);
+			rcb->rxq->rx_packets_with_error++;
+			goto next;
+		}
+
+		skb_put(skb, ntohs(cmpl->length));
+		if (likely
+		    (bnad->rx_csum &&
+		     (((flags & BNA_CQ_EF_IPV4) &&
+		      (flags & BNA_CQ_EF_L3_CKSUM_OK)) ||
+		      (flags & BNA_CQ_EF_IPV6)) &&
+		      (flags & (BNA_CQ_EF_TCP | BNA_CQ_EF_UDP)) &&
+		      (flags & BNA_CQ_EF_L4_CKSUM_OK)))
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+		else
+			skb_checksum_none_assert(skb);
+
+		rcb->rxq->rx_packets++;
+		rcb->rxq->rx_bytes += skb->len;
+		skb->protocol = eth_type_trans(skb, bnad->netdev);
+
+		if (bnad->vlan_grp && (flags & BNA_CQ_EF_VLAN)) {
+			struct bnad_rx_ctrl *rx_ctrl =
+				(struct bnad_rx_ctrl *)ccb->ctrl;
+			if (skb->ip_summed == CHECKSUM_UNNECESSARY)
+				vlan_gro_receive(&rx_ctrl->napi, bnad->vlan_grp,
+						ntohs(cmpl->vlan_tag), skb);
+			else
+				vlan_hwaccel_receive_skb(skb,
+							 bnad->vlan_grp,
+							 ntohs(cmpl->vlan_tag));
+
+		} else { /* Not VLAN tagged/stripped */
+			struct bnad_rx_ctrl *rx_ctrl =
+				(struct bnad_rx_ctrl *)ccb->ctrl;
+			if (skb->ip_summed == CHECKSUM_UNNECESSARY)
+				napi_gro_receive(&rx_ctrl->napi, skb);
+			else
+				netif_receive_skb(skb);
+		}
+
+next:
+		cmpl->valid = 0;
+		cmpl = next_cmpl;
+	}
+
+	BNA_QE_INDX_ADD(ccb->producer_index, wis, ccb->q_depth);
+
+	if (likely(ccb)) {
+		bna_ib_ack(ccb->i_dbell, packets);
+		bnad_refill_rxq(bnad, ccb->rcb[0]);
+		if (ccb->rcb[1])
+			bnad_refill_rxq(bnad, ccb->rcb[1]);
+	} else
+		bna_ib_ack(ccb->i_dbell, 0);
+
+	return packets;
+}
+
+static void
+bnad_disable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
+{
+	bna_ib_coalescing_timer_set(ccb->i_dbell, 0);
+	bna_ib_ack(ccb->i_dbell, 0);
+}
+
+static void
+bnad_enable_rx_irq(struct bnad *bnad, struct bna_ccb *ccb)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&bnad->bna_lock, flags); /* Because of polling context */
+	bnad_enable_rx_irq_unsafe(ccb);
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+}
+
+static void
+bnad_netif_rx_schedule_poll(struct bnad *bnad, struct bna_ccb *ccb)
+{
+	struct bnad_rx_ctrl *rx_ctrl = (struct bnad_rx_ctrl *)(ccb->ctrl);
+	if (likely(napi_schedule_prep((&rx_ctrl->napi)))) {
+		bnad_disable_rx_irq(bnad, ccb);
+		__napi_schedule((&rx_ctrl->napi));
+	}
+	BNAD_UPDATE_CTR(bnad, netif_rx_schedule);
+}
+
+/* MSIX Rx Path Handler */
+static irqreturn_t
+bnad_msix_rx(int irq, void *data)
+{
+	struct bna_ccb *ccb = (struct bna_ccb *)data;
+	struct bnad *bnad = ccb->bnad;
+
+	bnad_netif_rx_schedule_poll(bnad, ccb);
+
+	return IRQ_HANDLED;
+}
+
+/* Interrupt handlers */
+
+/* Mbox Interrupt Handlers */
+static irqreturn_t
+bnad_msix_mbox_handler(int irq, void *data)
+{
+	u32 intr_status;
+	unsigned long flags;
+	struct net_device *netdev = data;
+	struct bnad *bnad;
+
+	bnad = netdev_priv(netdev);
+
+	/* BNA_ISR_GET(bnad); Inc Ref count */
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+
+	bna_intr_status_get(&bnad->bna, intr_status);
+
+	if (BNA_IS_MBOX_ERR_INTR(intr_status))
+		bna_mbox_handler(&bnad->bna, intr_status);
+
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+	/* BNAD_ISR_PUT(bnad); Dec Ref count */
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+bnad_isr(int irq, void *data)
+{
+	int i, j;
+	u32 intr_status;
+	unsigned long flags;
+	struct net_device *netdev = data;
+	struct bnad *bnad = netdev_priv(netdev);
+	struct bnad_rx_info *rx_info;
+	struct bnad_rx_ctrl *rx_ctrl;
+
+	if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags)))
+		return IRQ_NONE;
+
+	bna_intr_status_get(&bnad->bna, intr_status);
+
+	if (unlikely(!intr_status))
+		return IRQ_NONE;
+
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+
+	if (BNA_IS_MBOX_ERR_INTR(intr_status)) {
+		bna_mbox_handler(&bnad->bna, intr_status);
+		if (!BNA_IS_INTX_DATA_INTR(intr_status)) {
+			spin_unlock_irqrestore(&bnad->bna_lock, flags);
+			goto done;
+		}
+	}
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+	/* Process data interrupts */
+	for (i = 0; i < bnad->num_rx; i++) {
+		rx_info = &bnad->rx_info[i];
+		if (!rx_info->rx)
+			continue;
+		for (j = 0; j < bnad->num_rxp_per_rx; j++) {
+			rx_ctrl = &rx_info->rx_ctrl[j];
+			if (rx_ctrl->ccb)
+				bnad_netif_rx_schedule_poll(bnad,
+							    rx_ctrl->ccb);
+		}
+	}
+done:
+	return IRQ_HANDLED;
+}
+
+/*
+ * Called in interrupt / callback context
+ * with bna_lock held, so cfg_flags access is OK
+ */
+static void
+bnad_enable_mbox_irq(struct bnad *bnad)
+{
+	int irq = BNAD_GET_MBOX_IRQ(bnad);
+
+	if (test_and_clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))
+		if (bnad->cfg_flags & BNAD_CF_MSIX)
+			enable_irq(irq);
+
+	BNAD_UPDATE_CTR(bnad, mbox_intr_enabled);
+}
+
+/*
+ * Called with bnad->bna_lock held b'cos of
+ * bnad->cfg_flags access.
+ */
+static void
+bnad_disable_mbox_irq(struct bnad *bnad)
+{
+	int irq = BNAD_GET_MBOX_IRQ(bnad);
+
+
+	if (!test_and_set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))
+		if (bnad->cfg_flags & BNAD_CF_MSIX)
+			disable_irq_nosync(irq);
+
+	BNAD_UPDATE_CTR(bnad, mbox_intr_disabled);
+}
+
+/* Control Path Handlers */
+
+/* Callbacks */
+void
+bnad_cb_device_enable_mbox_intr(struct bnad *bnad)
+{
+	bnad_enable_mbox_irq(bnad);
+}
+
+void
+bnad_cb_device_disable_mbox_intr(struct bnad *bnad)
+{
+	bnad_disable_mbox_irq(bnad);
+}
+
+void
+bnad_cb_device_enabled(struct bnad *bnad, enum bna_cb_status status)
+{
+	complete(&bnad->bnad_completions.ioc_comp);
+	bnad->bnad_completions.ioc_comp_status = status;
+}
+
+void
+bnad_cb_device_disabled(struct bnad *bnad, enum bna_cb_status status)
+{
+	complete(&bnad->bnad_completions.ioc_comp);
+	bnad->bnad_completions.ioc_comp_status = status;
+}
+
+static void
+bnad_cb_port_disabled(void *arg, enum bna_cb_status status)
+{
+	struct bnad *bnad = (struct bnad *)arg;
+
+	complete(&bnad->bnad_completions.port_comp);
+
+	netif_carrier_off(bnad->netdev);
+}
+
+void
+bnad_cb_port_link_status(struct bnad *bnad,
+			enum bna_link_status link_status)
+{
+	bool link_up = 0;
+
+	link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP);
+
+	if (link_status == BNA_CEE_UP) {
+		set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
+		BNAD_UPDATE_CTR(bnad, cee_up);
+	} else
+		clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags);
+
+	if (link_up) {
+		if (!netif_carrier_ok(bnad->netdev)) {
+			pr_warn("bna: %s link up\n",
+				bnad->netdev->name);
+			netif_carrier_on(bnad->netdev);
+			BNAD_UPDATE_CTR(bnad, link_toggle);
+			if (test_bit(BNAD_RF_TX_STARTED, &bnad->run_flags)) {
+				/* Force an immediate Transmit Schedule */
+				pr_info("bna: %s TX_STARTED\n",
+					bnad->netdev->name);
+				netif_wake_queue(bnad->netdev);
+				BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+			} else {
+				netif_stop_queue(bnad->netdev);
+				BNAD_UPDATE_CTR(bnad, netif_queue_stop);
+			}
+		}
+	} else {
+		if (netif_carrier_ok(bnad->netdev)) {
+			pr_warn("bna: %s link down\n",
+				bnad->netdev->name);
+			netif_carrier_off(bnad->netdev);
+			BNAD_UPDATE_CTR(bnad, link_toggle);
+		}
+	}
+}
+
+static void
+bnad_cb_tx_disabled(void *arg, struct bna_tx *tx,
+			enum bna_cb_status status)
+{
+	struct bnad *bnad = (struct bnad *)arg;
+
+	complete(&bnad->bnad_completions.tx_comp);
+}
+
+static void
+bnad_cb_tcb_setup(struct bnad *bnad, struct bna_tcb *tcb)
+{
+	struct bnad_tx_info *tx_info =
+			(struct bnad_tx_info *)tcb->txq->tx->priv;
+	struct bnad_unmap_q *unmap_q = tcb->unmap_q;
+
+	tx_info->tcb[tcb->id] = tcb;
+	unmap_q->producer_index = 0;
+	unmap_q->consumer_index = 0;
+	unmap_q->q_depth = BNAD_TX_UNMAPQ_DEPTH;
+}
+
+static void
+bnad_cb_tcb_destroy(struct bnad *bnad, struct bna_tcb *tcb)
+{
+	struct bnad_tx_info *tx_info =
+			(struct bnad_tx_info *)tcb->txq->tx->priv;
+
+	tx_info->tcb[tcb->id] = NULL;
+}
+
+static void
+bnad_cb_rcb_setup(struct bnad *bnad, struct bna_rcb *rcb)
+{
+	struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+	unmap_q->producer_index = 0;
+	unmap_q->consumer_index = 0;
+	unmap_q->q_depth = BNAD_RX_UNMAPQ_DEPTH;
+}
+
+static void
+bnad_cb_ccb_setup(struct bnad *bnad, struct bna_ccb *ccb)
+{
+	struct bnad_rx_info *rx_info =
+			(struct bnad_rx_info *)ccb->cq->rx->priv;
+
+	rx_info->rx_ctrl[ccb->id].ccb = ccb;
+	ccb->ctrl = &rx_info->rx_ctrl[ccb->id];
+}
+
+static void
+bnad_cb_ccb_destroy(struct bnad *bnad, struct bna_ccb *ccb)
+{
+	struct bnad_rx_info *rx_info =
+			(struct bnad_rx_info *)ccb->cq->rx->priv;
+
+	rx_info->rx_ctrl[ccb->id].ccb = NULL;
+}
+
+static void
+bnad_cb_tx_stall(struct bnad *bnad, struct bna_tcb *tcb)
+{
+	struct bnad_tx_info *tx_info =
+			(struct bnad_tx_info *)tcb->txq->tx->priv;
+
+	if (tx_info != &bnad->tx_info[0])
+		return;
+
+	clear_bit(BNAD_RF_TX_STARTED, &bnad->run_flags);
+	netif_stop_queue(bnad->netdev);
+	pr_info("bna: %s TX_STOPPED\n", bnad->netdev->name);
+}
+
+static void
+bnad_cb_tx_resume(struct bnad *bnad, struct bna_tcb *tcb)
+{
+	if (test_and_set_bit(BNAD_RF_TX_STARTED, &bnad->run_flags))
+		return;
+
+	if (netif_carrier_ok(bnad->netdev)) {
+		pr_info("bna: %s TX_STARTED\n", bnad->netdev->name);
+		netif_wake_queue(bnad->netdev);
+		BNAD_UPDATE_CTR(bnad, netif_queue_wakeup);
+	}
+}
+
+static void
+bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tcb *tcb)
+{
+	struct bnad_unmap_q *unmap_q;
+
+	if (!tcb || (!tcb->unmap_q))
+		return;
+
+	unmap_q = tcb->unmap_q;
+	if (!unmap_q->unmap_array)
+		return;
+
+	if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags))
+		return;
+
+	bnad_free_all_txbufs(bnad, tcb);
+
+	unmap_q->producer_index = 0;
+	unmap_q->consumer_index = 0;
+
+	smp_mb__before_clear_bit();
+	clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags);
+}
+
+static void
+bnad_cb_rx_cleanup(struct bnad *bnad,
+			struct bna_ccb *ccb)
+{
+	bnad_cq_cmpl_init(bnad, ccb);
+
+	bnad_free_rxbufs(bnad, ccb->rcb[0]);
+	clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags);
+
+	if (ccb->rcb[1]) {
+		bnad_free_rxbufs(bnad, ccb->rcb[1]);
+		clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags);
+	}
+}
+
+static void
+bnad_cb_rx_post(struct bnad *bnad, struct bna_rcb *rcb)
+{
+	struct bnad_unmap_q *unmap_q = rcb->unmap_q;
+
+	set_bit(BNAD_RXQ_STARTED, &rcb->flags);
+
+	/* Now allocate & post buffers for this RCB */
+	/* !!Allocation in callback context */
+	if (!test_and_set_bit(BNAD_RXQ_REFILL, &rcb->flags)) {
+		if (BNA_QE_FREE_CNT(unmap_q, unmap_q->q_depth)
+			 >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)
+			bnad_alloc_n_post_rxbufs(bnad, rcb);
+		smp_mb__before_clear_bit();
+		clear_bit(BNAD_RXQ_REFILL, &rcb->flags);
+	}
+}
+
+static void
+bnad_cb_rx_disabled(void *arg, struct bna_rx *rx,
+			enum bna_cb_status status)
+{
+	struct bnad *bnad = (struct bnad *)arg;
+
+	complete(&bnad->bnad_completions.rx_comp);
+}
+
+static void
+bnad_cb_rx_mcast_add(struct bnad *bnad, struct bna_rx *rx,
+				enum bna_cb_status status)
+{
+	bnad->bnad_completions.mcast_comp_status = status;
+	complete(&bnad->bnad_completions.mcast_comp);
+}
+
+void
+bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status,
+		       struct bna_stats *stats)
+{
+	if (status == BNA_CB_SUCCESS)
+		BNAD_UPDATE_CTR(bnad, hw_stats_updates);
+
+	if (!netif_running(bnad->netdev) ||
+		!test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags))
+		return;
+
+	mod_timer(&bnad->stats_timer,
+		  jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ));
+}
+
+/* Resource allocation, free functions */
+
+static void
+bnad_mem_free(struct bnad *bnad,
+	      struct bna_mem_info *mem_info)
+{
+	int i;
+	dma_addr_t dma_pa;
+
+	if (mem_info->mdl == NULL)
+		return;
+
+	for (i = 0; i < mem_info->num; i++) {
+		if (mem_info->mdl[i].kva != NULL) {
+			if (mem_info->mem_type == BNA_MEM_T_DMA) {
+				BNA_GET_DMA_ADDR(&(mem_info->mdl[i].dma),
+						dma_pa);
+				pci_free_consistent(bnad->pcidev,
+						mem_info->mdl[i].len,
+						mem_info->mdl[i].kva, dma_pa);
+			} else
+				kfree(mem_info->mdl[i].kva);
+		}
+	}
+	kfree(mem_info->mdl);
+	mem_info->mdl = NULL;
+}
+
+static int
+bnad_mem_alloc(struct bnad *bnad,
+	       struct bna_mem_info *mem_info)
+{
+	int i;
+	dma_addr_t dma_pa;
+
+	if ((mem_info->num == 0) || (mem_info->len == 0)) {
+		mem_info->mdl = NULL;
+		return 0;
+	}
+
+	mem_info->mdl = kcalloc(mem_info->num, sizeof(struct bna_mem_descr),
+				GFP_KERNEL);
+	if (mem_info->mdl == NULL)
+		return -ENOMEM;
+
+	if (mem_info->mem_type == BNA_MEM_T_DMA) {
+		for (i = 0; i < mem_info->num; i++) {
+			mem_info->mdl[i].len = mem_info->len;
+			mem_info->mdl[i].kva =
+				pci_alloc_consistent(bnad->pcidev,
+						mem_info->len, &dma_pa);
+
+			if (mem_info->mdl[i].kva == NULL)
+				goto err_return;
+
+			BNA_SET_DMA_ADDR(dma_pa,
+					 &(mem_info->mdl[i].dma));
+		}
+	} else {
+		for (i = 0; i < mem_info->num; i++) {
+			mem_info->mdl[i].len = mem_info->len;
+			mem_info->mdl[i].kva = kzalloc(mem_info->len,
+							GFP_KERNEL);
+			if (mem_info->mdl[i].kva == NULL)
+				goto err_return;
+		}
+	}
+
+	return 0;
+
+err_return:
+	bnad_mem_free(bnad, mem_info);
+	return -ENOMEM;
+}
+
+/* Free IRQ for Mailbox */
+static void
+bnad_mbox_irq_free(struct bnad *bnad,
+		   struct bna_intr_info *intr_info)
+{
+	int irq;
+	unsigned long flags;
+
+	if (intr_info->idl == NULL)
+		return;
+
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+	bnad_disable_mbox_irq(bnad);
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+	irq = BNAD_GET_MBOX_IRQ(bnad);
+	free_irq(irq, bnad->netdev);
+
+	kfree(intr_info->idl);
+}
+
+/*
+ * Allocates IRQ for Mailbox, but keep it disabled
+ * This will be enabled once we get the mbox enable callback
+ * from bna
+ */
+static int
+bnad_mbox_irq_alloc(struct bnad *bnad,
+		    struct bna_intr_info *intr_info)
+{
+	int 		err;
+	unsigned long 	flags;
+	u32	irq;
+	irq_handler_t 	irq_handler;
+
+	/* Mbox should use only 1 vector */
+
+	intr_info->idl = kzalloc(sizeof(*(intr_info->idl)), GFP_KERNEL);
+	if (!intr_info->idl)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+	if (bnad->cfg_flags & BNAD_CF_MSIX) {
+		irq_handler = (irq_handler_t)bnad_msix_mbox_handler;
+		irq = bnad->msix_table[bnad->msix_num - 1].vector;
+		flags = 0;
+		intr_info->intr_type = BNA_INTR_T_MSIX;
+		intr_info->idl[0].vector = bnad->msix_num - 1;
+	} else {
+		irq_handler = (irq_handler_t)bnad_isr;
+		irq = bnad->pcidev->irq;
+		flags = IRQF_SHARED;
+		intr_info->intr_type = BNA_INTR_T_INTX;
+		/* intr_info->idl.vector = 0 ? */
+	}
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+	sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME);
+
+	/*
+	 * Set the Mbox IRQ disable flag, so that the IRQ handler
+	 * called from request_irq() for SHARED IRQs do not execute
+	 */
+	set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags);
+
+	err = request_irq(irq, irq_handler, flags,
+			  bnad->mbox_irq_name, bnad->netdev);
+
+	if (err) {
+		kfree(intr_info->idl);
+		intr_info->idl = NULL;
+		return err;
+	}
+
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+
+	if (bnad->cfg_flags & BNAD_CF_MSIX)
+		disable_irq_nosync(irq);
+
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+	return 0;
+}
+
+static void
+bnad_txrx_irq_free(struct bnad *bnad, struct bna_intr_info *intr_info)
+{
+	kfree(intr_info->idl);
+	intr_info->idl = NULL;
+}
+
+/* Allocates Interrupt Descriptor List for MSIX/INT-X vectors */
+static int
+bnad_txrx_irq_alloc(struct bnad *bnad, enum bnad_intr_source src,
+		    uint txrx_id, struct bna_intr_info *intr_info)
+{
+	int i, vector_start = 0;
+	u32 cfg_flags;
+	unsigned long flags;
+
+	spin_lock_irqsave(&bnad->bna_lock, flags);
+	cfg_flags = bnad->cfg_flags;
+	spin_unlock_irqrestore(&bnad->bna_lock, flags);
+
+	if (cfg_flags & BNAD_CF_MSIX) {
+		intr_info->intr_type = BNA_INTR_T_MSIX;
+		intr_info->idl = kcalloc(intr_info->num,
+					sizeof(struct bna_intr_descr),
+					GFP_KERNEL);
+		if (!intr_info->idl)
+			return -ENOMEM;
+
+		switch (src) {
+		case BNAD_INTR_TX:
+			vector_start = txrx_id;
+			break;
+
+		case BNAD_INTR_RX:
+			vector_start = bnad->num_tx * bnad->num_txq_per_tx +
+					txrx_id;
+			break;
+
+		default:
+			BUG();
+		}
+
+		for (i = 0; i < intr_info->num; i++)
+			intr_info->idl[i].vector = vector_start + i;
+	} else {
+		intr_info->intr_type = BNA_INTR_T_INTX;
+		intr_info->num = 1;
+		intr_info->idl = kcalloc(intr_info->num,
+					sizeof(struct bna_intr_descr),
+					GFP_KERNEL);
+		if (!intr_info->idl)
+			return -ENOMEM;
+
+		switch (src) {
+		case BNAD_INTR_TX:
+			intr_info->idl[0].vector = 0x1; /* Bit mask : Tx IB */
+			break;
+
+		case BNAD_INTR_RX:
+			intr_info->idl[0].vector = 0x2; /* Bit mask : Rx IB */
+			break;
+		}
+	}
+	return 0;
+}
+
+/**
+ * NOTE: Should be called for MSIX only
+ * Unregisters Tx MSIX vector(s) from the kernel
+ */
+static void
+bnad_tx_msix_unregister(struct bnad *bnad, struct bnad_tx_info *tx_info,
+			int num_txqs)
+{
+	int i;
+	int vector_num;
+
+	for (i = 0; i < num_txqs; i++) {