Merge commit 'origin/master' into next

1 files changed, 1911 insertions, 0 deletions

diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
new file mode 100644
index 00000000000..0ecaffb70e5
--- /dev/null
+++ b/drivers/net/benet/be_main.c
@@ -0,0 +1,1911 @@
+/*
+ * Copyright (C) 2005 - 2009 ServerEngines
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.  The full GNU General
+ * Public License is included in this distribution in the file called COPYING.
+ *
+ * Contact Information:
+ * linux-drivers@serverengines.com
+ *
+ * ServerEngines
+ * 209 N. Fair Oaks Ave
+ * Sunnyvale, CA 94085
+ */
+
+#include "be.h"
+
+MODULE_VERSION(DRV_VER);
+MODULE_DEVICE_TABLE(pci, be_dev_ids);
+MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
+MODULE_AUTHOR("ServerEngines Corporation");
+MODULE_LICENSE("GPL");
+
+static unsigned int rx_frag_size = 2048;
+module_param(rx_frag_size, uint, S_IRUGO);
+MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
+
+#define BE_VENDOR_ID 		0x19a2
+#define BE2_DEVICE_ID_1 	0x0211
+static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
+	{ PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, be_dev_ids);
+
+static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
+{
+	struct be_dma_mem *mem = &q->dma_mem;
+	if (mem->va)
+		pci_free_consistent(adapter->pdev, mem->size,
+			mem->va, mem->dma);
+}
+
+static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
+		u16 len, u16 entry_size)
+{
+	struct be_dma_mem *mem = &q->dma_mem;
+
+	memset(q, 0, sizeof(*q));
+	q->len = len;
+	q->entry_size = entry_size;
+	mem->size = len * entry_size;
+	mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
+	if (!mem->va)
+		return -1;
+	memset(mem->va, 0, mem->size);
+	return 0;
+}
+
+static inline void *queue_head_node(struct be_queue_info *q)
+{
+	return q->dma_mem.va + q->head * q->entry_size;
+}
+
+static inline void *queue_tail_node(struct be_queue_info *q)
+{
+	return q->dma_mem.va + q->tail * q->entry_size;
+}
+
+static inline void queue_head_inc(struct be_queue_info *q)
+{
+	index_inc(&q->head, q->len);
+}
+
+static inline void queue_tail_inc(struct be_queue_info *q)
+{
+	index_inc(&q->tail, q->len);
+}
+
+static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
+{
+	u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
+	u32 reg = ioread32(addr);
+	u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
+	if (!enabled && enable) {
+		reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
+	} else if (enabled && !enable) {
+		reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
+	} else {
+		printk(KERN_WARNING DRV_NAME
+			": bad value in membar_int_ctrl reg=0x%x\n", reg);
+		return;
+	}
+	iowrite32(reg, addr);
+}
+
+static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
+{
+	u32 val = 0;
+	val |= qid & DB_RQ_RING_ID_MASK;
+	val |= posted << DB_RQ_NUM_POSTED_SHIFT;
+	iowrite32(val, ctrl->db + DB_RQ_OFFSET);
+}
+
+static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
+{
+	u32 val = 0;
+	val |= qid & DB_TXULP_RING_ID_MASK;
+	val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
+	iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
+}
+
+static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
+		bool arm, bool clear_int, u16 num_popped)
+{
+	u32 val = 0;
+	val |= qid & DB_EQ_RING_ID_MASK;
+	if (arm)
+		val |= 1 << DB_EQ_REARM_SHIFT;
+	if (clear_int)
+		val |= 1 << DB_EQ_CLR_SHIFT;
+	val |= 1 << DB_EQ_EVNT_SHIFT;
+	val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
+	iowrite32(val, ctrl->db + DB_EQ_OFFSET);
+}
+
+static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
+		bool arm, u16 num_popped)
+{
+	u32 val = 0;
+	val |= qid & DB_CQ_RING_ID_MASK;
+	if (arm)
+		val |= 1 << DB_CQ_REARM_SHIFT;
+	val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
+	iowrite32(val, ctrl->db + DB_CQ_OFFSET);
+}
+
+
+static int be_mac_addr_set(struct net_device *netdev, void *p)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+	int status = 0;
+
+	if (netif_running(netdev)) {
+		status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
+				adapter->pmac_id);
+		if (status)
+			return status;
+
+		status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
+				adapter->if_handle, &adapter->pmac_id);
+	}
+
+	if (!status)
+		memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+
+	return status;
+}
+
+static void netdev_stats_update(struct be_adapter *adapter)
+{
+	struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
+	struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
+	struct be_port_rxf_stats *port_stats =
+			&rxf_stats->port[adapter->port_num];
+	struct net_device_stats *dev_stats = &adapter->stats.net_stats;
+
+	dev_stats->rx_packets = port_stats->rx_total_frames;
+	dev_stats->tx_packets = port_stats->tx_unicastframes +
+		port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
+	dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
+				(u64) port_stats->rx_bytes_lsd;
+	dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
+				(u64) port_stats->tx_bytes_lsd;
+
+	/* bad pkts received */
+	dev_stats->rx_errors = port_stats->rx_crc_errors +
+		port_stats->rx_alignment_symbol_errors +
+		port_stats->rx_in_range_errors +
+		port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
+
+	/*  packet transmit problems */
+	dev_stats->tx_errors = 0;
+
+	/*  no space in linux buffers */
+	dev_stats->rx_dropped = 0;
+
+	/* no space available in linux */
+	dev_stats->tx_dropped = 0;
+
+	dev_stats->multicast = port_stats->tx_multicastframes;
+	dev_stats->collisions = 0;
+
+	/* detailed rx errors */
+	dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
+		port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
+	/* receive ring buffer overflow */
+	dev_stats->rx_over_errors = 0;
+	dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
+
+	/* frame alignment errors */
+	dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
+	/* receiver fifo overrun */
+	/* drops_no_pbuf is no per i/f, it's per BE card */
+	dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
+					port_stats->rx_input_fifo_overflow +
+					rxf_stats->rx_drops_no_pbuf;
+	/* receiver missed packetd */
+	dev_stats->rx_missed_errors = 0;
+	/* detailed tx_errors */
+	dev_stats->tx_aborted_errors = 0;
+	dev_stats->tx_carrier_errors = 0;
+	dev_stats->tx_fifo_errors = 0;
+	dev_stats->tx_heartbeat_errors = 0;
+	dev_stats->tx_window_errors = 0;
+}
+
+static void be_link_status_update(struct be_adapter *adapter)
+{
+	struct be_link_info *prev = &adapter->link;
+	struct be_link_info now = { 0 };
+	struct net_device *netdev = adapter->netdev;
+
+	be_cmd_link_status_query(&adapter->ctrl, &now);
+
+	/* If link came up or went down */
+	if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
+			prev->speed == PHY_LINK_SPEED_ZERO)) {
+		if (now.speed == PHY_LINK_SPEED_ZERO) {
+			netif_stop_queue(netdev);
+			netif_carrier_off(netdev);
+			printk(KERN_INFO "%s: Link down\n", netdev->name);
+		} else {
+			netif_start_queue(netdev);
+			netif_carrier_on(netdev);
+			printk(KERN_INFO "%s: Link up\n", netdev->name);
+		}
+	}
+	*prev = now;
+}
+
+/* Update the EQ delay n BE based on the RX frags consumed / sec */
+static void be_rx_eqd_update(struct be_adapter *adapter)
+{
+	u32 eqd;
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	struct be_eq_obj *rx_eq = &adapter->rx_eq;
+	struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
+
+	/* Update once a second */
+	if (((jiffies - stats->rx_fps_jiffies) < HZ) || rx_eq->enable_aic == 0)
+		return;
+
+	stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
+			((jiffies - stats->rx_fps_jiffies) / HZ);
+
+	stats->rx_fps_jiffies = jiffies;
+	stats->be_prev_rx_frags = stats->be_rx_frags;
+	eqd = stats->be_rx_fps / 110000;
+	eqd = eqd << 3;
+	if (eqd > rx_eq->max_eqd)
+		eqd = rx_eq->max_eqd;
+	if (eqd < rx_eq->min_eqd)
+		eqd = rx_eq->min_eqd;
+	if (eqd < 10)
+		eqd = 0;
+	if (eqd != rx_eq->cur_eqd)
+		be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
+
+	rx_eq->cur_eqd = eqd;
+}
+
+static struct net_device_stats *be_get_stats(struct net_device *dev)
+{
+	struct be_adapter *adapter = netdev_priv(dev);
+
+	return &adapter->stats.net_stats;
+}
+
+static void be_tx_stats_update(struct be_adapter *adapter,
+			u32 wrb_cnt, u32 copied, bool stopped)
+{
+	struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
+	stats->be_tx_reqs++;
+	stats->be_tx_wrbs += wrb_cnt;
+	stats->be_tx_bytes += copied;
+	if (stopped)
+		stats->be_tx_stops++;
+
+	/* Update tx rate once in two seconds */
+	if ((jiffies - stats->be_tx_jiffies) > 2 * HZ) {
+		u32 r;
+		r = (stats->be_tx_bytes - stats->be_tx_bytes_prev) /
+			((u32) (jiffies - stats->be_tx_jiffies) / HZ);
+		r = (r / 1000000);			/* M bytes/s */
+		stats->be_tx_rate = (r * 8);	/* M bits/s */
+		stats->be_tx_jiffies = jiffies;
+		stats->be_tx_bytes_prev = stats->be_tx_bytes;
+	}
+}
+
+/* Determine number of WRB entries needed to xmit data in an skb */
+static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
+{
+	int cnt = 0;
+	while (skb) {
+		if (skb->len > skb->data_len)
+			cnt++;
+		cnt += skb_shinfo(skb)->nr_frags;
+		skb = skb_shinfo(skb)->frag_list;
+	}
+	/* to account for hdr wrb */
+	cnt++;
+	if (cnt & 1) {
+		/* add a dummy to make it an even num */
+		cnt++;
+		*dummy = true;
+	} else
+		*dummy = false;
+	BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
+	return cnt;
+}
+
+static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
+{
+	wrb->frag_pa_hi = upper_32_bits(addr);
+	wrb->frag_pa_lo = addr & 0xFFFFFFFF;
+	wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
+}
+
+static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
+		bool vlan, u32 wrb_cnt, u32 len)
+{
+	memset(hdr, 0, sizeof(*hdr));
+
+	AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
+
+	if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
+		AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
+		AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
+			hdr, skb_shinfo(skb)->gso_size);
+	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		if (is_tcp_pkt(skb))
+			AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
+		else if (is_udp_pkt(skb))
+			AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
+	}
+
+	if (vlan && vlan_tx_tag_present(skb)) {
+		AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
+		AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
+			hdr, vlan_tx_tag_get(skb));
+	}
+
+	AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
+	AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
+	AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
+	AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
+}
+
+
+static int make_tx_wrbs(struct be_adapter *adapter,
+		struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
+{
+	u64 busaddr;
+	u32 i, copied = 0;
+	struct pci_dev *pdev = adapter->pdev;
+	struct sk_buff *first_skb = skb;
+	struct be_queue_info *txq = &adapter->tx_obj.q;
+	struct be_eth_wrb *wrb;
+	struct be_eth_hdr_wrb *hdr;
+
+	atomic_add(wrb_cnt, &txq->used);
+	hdr = queue_head_node(txq);
+	queue_head_inc(txq);
+
+	while (skb) {
+		if (skb->len > skb->data_len) {
+			int len = skb->len - skb->data_len;
+			busaddr = pci_map_single(pdev, skb->data, len,
+					PCI_DMA_TODEVICE);
+			wrb = queue_head_node(txq);
+			wrb_fill(wrb, busaddr, len);
+			be_dws_cpu_to_le(wrb, sizeof(*wrb));
+			queue_head_inc(txq);
+			copied += len;
+		}
+
+		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+			struct skb_frag_struct *frag =
+				&skb_shinfo(skb)->frags[i];
+			busaddr = pci_map_page(pdev, frag->page,
+					frag->page_offset,
+					frag->size, PCI_DMA_TODEVICE);
+			wrb = queue_head_node(txq);
+			wrb_fill(wrb, busaddr, frag->size);
+			be_dws_cpu_to_le(wrb, sizeof(*wrb));
+			queue_head_inc(txq);
+			copied += frag->size;
+		}
+		skb = skb_shinfo(skb)->frag_list;
+	}
+
+	if (dummy_wrb) {
+		wrb = queue_head_node(txq);
+		wrb_fill(wrb, 0, 0);
+		be_dws_cpu_to_le(wrb, sizeof(*wrb));
+		queue_head_inc(txq);
+	}
+
+	wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
+		wrb_cnt, copied);
+	be_dws_cpu_to_le(hdr, sizeof(*hdr));
+
+	return copied;
+}
+
+static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	struct be_tx_obj *tx_obj = &adapter->tx_obj;
+	struct be_queue_info *txq = &tx_obj->q;
+	u32 wrb_cnt = 0, copied = 0;
+	u32 start = txq->head;
+	bool dummy_wrb, stopped = false;
+
+	wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
+
+	copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
+
+	/* record the sent skb in the sent_skb table */
+	BUG_ON(tx_obj->sent_skb_list[start]);
+	tx_obj->sent_skb_list[start] = skb;
+
+	/* Ensure that txq has space for the next skb; Else stop the queue
+	 * *BEFORE* ringing the tx doorbell, so that we serialze the
+	 * tx compls of the current transmit which'll wake up the queue
+	 */
+	if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
+		netif_stop_queue(netdev);
+		stopped = true;
+	}
+
+	be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
+
+	netdev->trans_start = jiffies;
+
+	be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
+	return NETDEV_TX_OK;
+}
+
+static int be_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	if (new_mtu < BE_MIN_MTU ||
+			new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
+		dev_info(&adapter->pdev->dev,
+			"MTU must be between %d and %d bytes\n",
+			BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
+		return -EINVAL;
+	}
+	dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
+			netdev->mtu, new_mtu);
+	netdev->mtu = new_mtu;
+	return 0;
+}
+
+/*
+ * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
+ * program them in BE.  If more than BE_NUM_VLANS_SUPPORTED are configured,
+ * set the BE in promiscuous VLAN mode.
+ */
+static void be_vid_config(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	u16 vtag[BE_NUM_VLANS_SUPPORTED];
+	u16 ntags = 0, i;
+
+	if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED)  {
+		/* Construct VLAN Table to give to HW */
+		for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+			if (adapter->vlan_tag[i]) {
+				vtag[ntags] = cpu_to_le16(i);
+				ntags++;
+			}
+		}
+		be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
+			vtag, ntags, 1, 0);
+	} else {
+		be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
+			NULL, 0, 1, 1);
+	}
+}
+
+static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	struct be_eq_obj *rx_eq = &adapter->rx_eq;
+	struct be_eq_obj *tx_eq = &adapter->tx_eq;
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+
+	be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
+	be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
+	adapter->vlan_grp = grp;
+	be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
+	be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
+}
+
+static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+
+	adapter->num_vlans++;
+	adapter->vlan_tag[vid] = 1;
+
+	be_vid_config(netdev);
+}
+
+static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+
+	adapter->num_vlans--;
+	adapter->vlan_tag[vid] = 0;
+
+	vlan_group_set_device(adapter->vlan_grp, vid, NULL);
+	be_vid_config(netdev);
+}
+
+static void be_set_multicast_filter(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	struct dev_mc_list *mc_ptr;
+	u8 mac_addr[32][ETH_ALEN];
+	int i = 0;
+
+	if (netdev->flags & IFF_ALLMULTI) {
+		/* set BE in Multicast promiscuous */
+		be_cmd_mcast_mac_set(&adapter->ctrl,
+					adapter->if_handle, NULL, 0, true);
+		return;
+	}
+
+	for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
+		memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
+		if (++i >= 32) {
+			be_cmd_mcast_mac_set(&adapter->ctrl,
+				adapter->if_handle, &mac_addr[0][0], i, false);
+			i = 0;
+		}
+
+	}
+
+	if (i) {
+		/* reset the promiscuous mode also. */
+		be_cmd_mcast_mac_set(&adapter->ctrl,
+			adapter->if_handle, &mac_addr[0][0], i, false);
+	}
+}
+
+static void be_set_multicast_list(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+
+	if (netdev->flags & IFF_PROMISC) {
+		be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
+	} else {
+		be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
+		be_set_multicast_filter(netdev);
+	}
+}
+
+static void be_rx_rate_update(struct be_adapter *adapter, u32 pktsize,
+			u16 numfrags)
+{
+	struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
+	u32 rate;
+
+	stats->be_rx_compl++;
+	stats->be_rx_frags += numfrags;
+	stats->be_rx_bytes += pktsize;
+
+	/* Update the rate once in two seconds */
+	if ((jiffies - stats->be_rx_jiffies) < 2 * HZ)
+		return;
+
+	rate = (stats->be_rx_bytes - stats->be_rx_bytes_prev) /
+		((u32) (jiffies - stats->be_rx_jiffies) / HZ);
+	rate = (rate / 1000000);	/* MB/Sec */
+	stats->be_rx_rate = (rate * 8); 	/* Mega Bits/Sec */
+	stats->be_rx_jiffies = jiffies;
+	stats->be_rx_bytes_prev = stats->be_rx_bytes;
+}
+
+static struct be_rx_page_info *
+get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
+{
+	struct be_rx_page_info *rx_page_info;
+	struct be_queue_info *rxq = &adapter->rx_obj.q;
+
+	rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
+	BUG_ON(!rx_page_info->page);
+
+	if (rx_page_info->last_page_user)
+		pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
+			adapter->big_page_size, PCI_DMA_FROMDEVICE);
+
+	atomic_dec(&rxq->used);
+	return rx_page_info;
+}
+
+/* Throwaway the data in the Rx completion */
+static void be_rx_compl_discard(struct be_adapter *adapter,
+			struct be_eth_rx_compl *rxcp)
+{
+	struct be_queue_info *rxq = &adapter->rx_obj.q;
+	struct be_rx_page_info *page_info;
+	u16 rxq_idx, i, num_rcvd;
+
+	rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
+	num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
+
+	for (i = 0; i < num_rcvd; i++) {
+		page_info = get_rx_page_info(adapter, rxq_idx);
+		put_page(page_info->page);
+		memset(page_info, 0, sizeof(*page_info));
+		index_inc(&rxq_idx, rxq->len);
+	}
+}
+
+/*
+ * skb_fill_rx_data forms a complete skb for an ether frame
+ * indicated by rxcp.
+ */
+static void skb_fill_rx_data(struct be_adapter *adapter,
+			struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
+{
+	struct be_queue_info *rxq = &adapter->rx_obj.q;
+	struct be_rx_page_info *page_info;
+	u16 rxq_idx, i, num_rcvd;
+	u32 pktsize, hdr_len, curr_frag_len;
+	u8 *start;
+
+	rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
+	pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
+	num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
+
+	page_info = get_rx_page_info(adapter, rxq_idx);
+
+	start = page_address(page_info->page) + page_info->page_offset;
+	prefetch(start);
+
+	/* Copy data in the first descriptor of this completion */
+	curr_frag_len = min(pktsize, rx_frag_size);
+
+	/* Copy the header portion into skb_data */
+	hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
+	memcpy(skb->data, start, hdr_len);
+	skb->len = curr_frag_len;
+	if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
+		/* Complete packet has now been moved to data */
+		put_page(page_info->page);
+		skb->data_len = 0;
+		skb->tail += curr_frag_len;
+	} else {
+		skb_shinfo(skb)->nr_frags = 1;
+		skb_shinfo(skb)->frags[0].page = page_info->page;
+		skb_shinfo(skb)->frags[0].page_offset =
+					page_info->page_offset + hdr_len;
+		skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
+		skb->data_len = curr_frag_len - hdr_len;
+		skb->tail += hdr_len;
+	}
+	memset(page_info, 0, sizeof(*page_info));
+
+	if (pktsize <= rx_frag_size) {
+		BUG_ON(num_rcvd != 1);
+		return;
+	}
+
+	/* More frags present for this completion */
+	pktsize -= curr_frag_len; /* account for above copied frag */
+	for (i = 1; i < num_rcvd; i++) {
+		index_inc(&rxq_idx, rxq->len);
+		page_info = get_rx_page_info(adapter, rxq_idx);
+
+		curr_frag_len = min(pktsize, rx_frag_size);
+
+		skb_shinfo(skb)->frags[i].page = page_info->page;
+		skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
+		skb_shinfo(skb)->frags[i].size = curr_frag_len;
+		skb->len += curr_frag_len;
+		skb->data_len += curr_frag_len;
+		skb_shinfo(skb)->nr_frags++;
+		pktsize -= curr_frag_len;
+
+		memset(page_info, 0, sizeof(*page_info));
+	}
+
+	be_rx_rate_update(adapter, pktsize, num_rcvd);
+	return;
+}
+
+/* Process the RX completion indicated by rxcp when LRO is disabled */
+static void be_rx_compl_process(struct be_adapter *adapter,
+			struct be_eth_rx_compl *rxcp)
+{
+	struct sk_buff *skb;
+	u32 vtp, vid;
+	int l4_cksm;
+
+	l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
+	vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
+
+	skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
+	if (!skb) {
+		if (net_ratelimit())
+			dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
+		be_rx_compl_discard(adapter, rxcp);
+		return;
+	}
+
+	skb_reserve(skb, NET_IP_ALIGN);
+
+	skb_fill_rx_data(adapter, skb, rxcp);
+
+	if (l4_cksm && adapter->rx_csum)
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+	else
+		skb->ip_summed = CHECKSUM_NONE;
+
+	skb->truesize = skb->len + sizeof(struct sk_buff);
+	skb->protocol = eth_type_trans(skb, adapter->netdev);
+	skb->dev = adapter->netdev;
+
+	if (vtp) {
+		if (!adapter->vlan_grp || adapter->num_vlans == 0) {
+			kfree_skb(skb);
+			return;
+		}
+		vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
+		vid = be16_to_cpu(vid);
+		vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
+	} else {
+		netif_receive_skb(skb);
+	}
+
+	adapter->netdev->last_rx = jiffies;
+
+	return;
+}
+
+/* Process the RX completion indicated by rxcp when LRO is enabled */
+static void be_rx_compl_process_lro(struct be_adapter *adapter,
+			struct be_eth_rx_compl *rxcp)
+{
+	struct be_rx_page_info *page_info;
+	struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
+	struct be_queue_info *rxq = &adapter->rx_obj.q;
+	u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
+	u16 i, rxq_idx = 0, vid;
+
+	num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
+	pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
+	vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
+	rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
+
+	remaining = pkt_size;
+	for (i = 0; i < num_rcvd; i++) {
+		page_info = get_rx_page_info(adapter, rxq_idx);
+
+		curr_frag_len = min(remaining, rx_frag_size);
+
+		rx_frags[i].page = page_info->page;
+		rx_frags[i].page_offset = page_info->page_offset;
+		rx_frags[i].size = curr_frag_len;
+		remaining -= curr_frag_len;
+
+		index_inc(&rxq_idx, rxq->len);
+
+		memset(page_info, 0, sizeof(*page_info));
+	}
+
+	if (likely(!vlanf)) {
+		lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
+				pkt_size, NULL, 0);
+	} else {
+		vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
+		vid = be16_to_cpu(vid);
+
+		if (!adapter->vlan_grp || adapter->num_vlans == 0)
+			return;
+
+		lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
+			rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
+			vid, NULL, 0);
+	}
+
+	be_rx_rate_update(adapter, pkt_size, num_rcvd);
+	return;
+}
+
+static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
+{
+	struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
+
+	if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
+		return NULL;
+
+	be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
+
+	rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
+
+	queue_tail_inc(&adapter->rx_obj.cq);
+	return rxcp;
+}
+
+static inline struct page *be_alloc_pages(u32 size)
+{
+	gfp_t alloc_flags = GFP_ATOMIC;
+	u32 order = get_order(size);
+	if (order > 0)
+		alloc_flags |= __GFP_COMP;
+	return  alloc_pages(alloc_flags, order);
+}
+
+/*
+ * Allocate a page, split it to fragments of size rx_frag_size and post as
+ * receive buffers to BE
+ */
+static void be_post_rx_frags(struct be_adapter *adapter)
+{
+	struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
+	struct be_rx_page_info *page_info = NULL;
+	struct be_queue_info *rxq = &adapter->rx_obj.q;
+	struct page *pagep = NULL;
+	struct be_eth_rx_d *rxd;
+	u64 page_dmaaddr = 0, frag_dmaaddr;
+	u32 posted, page_offset = 0;
+
+
+	page_info = &page_info_tbl[rxq->head];
+	for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
+		if (!pagep) {
+			pagep = be_alloc_pages(adapter->big_page_size);
+			if (unlikely(!pagep)) {
+				drvr_stats(adapter)->be_ethrx_post_fail++;
+				break;
+			}
+			page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
+						adapter->big_page_size,
+						PCI_DMA_FROMDEVICE);
+			page_info->page_offset = 0;
+		} else {
+			get_page(pagep);
+			page_info->page_offset = page_offset + rx_frag_size;
+		}
+		page_offset = page_info->page_offset;
+		page_info->page = pagep;
+		pci_unmap_addr_set(page_info, bus, page_dmaaddr);
+		frag_dmaaddr = page_dmaaddr + page_info->page_offset;
+
+		rxd = queue_head_node(rxq);
+		rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
+		rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
+		queue_head_inc(rxq);
+
+		/* Any space left in the current big page for another frag? */
+		if ((page_offset + rx_frag_size + rx_frag_size) >
+					adapter->big_page_size) {
+			pagep = NULL;
+			page_info->last_page_user = true;
+		}
+		page_info = &page_info_tbl[rxq->head];
+	}
+	if (pagep)
+		page_info->last_page_user = true;
+
+	if (posted) {
+		atomic_add(posted, &rxq->used);
+		be_rxq_notify(&adapter->ctrl, rxq->id, posted);
+	} else if (atomic_read(&rxq->used) == 0) {
+		/* Let be_worker replenish when memory is available */
+		adapter->rx_post_starved = true;
+	}
+
+	return;
+}
+
+static struct be_eth_tx_compl *
+be_tx_compl_get(struct be_adapter *adapter)
+{
+	struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
+	struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
+
+	if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
+		return NULL;
+
+	be_dws_le_to_cpu(txcp, sizeof(*txcp));
+
+	txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
+
+	queue_tail_inc(tx_cq);
+	return txcp;
+}
+
+static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
+{
+	struct be_queue_info *txq = &adapter->tx_obj.q;
+	struct be_eth_wrb *wrb;
+	struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
+	struct sk_buff *sent_skb;
+	u64 busaddr;
+	u16 cur_index, num_wrbs = 0;
+
+	cur_index = txq->tail;
+	sent_skb = sent_skbs[cur_index];
+	BUG_ON(!sent_skb);
+	sent_skbs[cur_index] = NULL;
+
+	do {
+		cur_index = txq->tail;
+		wrb = queue_tail_node(txq);
+		be_dws_le_to_cpu(wrb, sizeof(*wrb));
+		busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
+		if (busaddr != 0) {
+			pci_unmap_single(adapter->pdev, busaddr,
+				wrb->frag_len, PCI_DMA_TODEVICE);
+		}
+		num_wrbs++;
+		queue_tail_inc(txq);
+	} while (cur_index != last_index);
+
+	atomic_sub(num_wrbs, &txq->used);
+
+	kfree_skb(sent_skb);
+}
+
+static void be_rx_q_clean(struct be_adapter *adapter)
+{
+	struct be_rx_page_info *page_info;
+	struct be_queue_info *rxq = &adapter->rx_obj.q;
+	struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
+	struct be_eth_rx_compl *rxcp;
+	u16 tail;
+
+	/* First cleanup pending rx completions */
+	while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
+		be_rx_compl_discard(adapter, rxcp);
+		be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
+	}
+
+	/* Then free posted rx buffer that were not used */
+	tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
+	for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
+		page_info = get_rx_page_info(adapter, tail);
+		put_page(page_info->page);
+		memset(page_info, 0, sizeof(*page_info));
+	}
+	BUG_ON(atomic_read(&rxq->used));
+}
+
+static void be_tx_q_clean(struct be_adapter *adapter)
+{
+	struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
+	struct sk_buff *sent_skb;
+	struct be_queue_info *txq = &adapter->tx_obj.q;
+	u16 last_index;
+	bool dummy_wrb;
+
+	while (atomic_read(&txq->used)) {
+		sent_skb = sent_skbs[txq->tail];
+		last_index = txq->tail;
+		index_adv(&last_index,
+			wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
+		be_tx_compl_process(adapter, last_index);
+	}
+}
+
+static void be_tx_queues_destroy(struct be_adapter *adapter)
+{
+	struct be_queue_info *q;
+
+	q = &adapter->tx_obj.q;
+	if (q->created)
+		be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
+	be_queue_free(adapter, q);
+
+	q = &adapter->tx_obj.cq;
+	if (q->created)
+		be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
+	be_queue_free(adapter, q);
+
+	/* No more tx completions can be rcvd now; clean up if there are
+	 * any pending completions or pending tx requests */
+	be_tx_q_clean(adapter);
+
+	q = &adapter->tx_eq.q;
+	if (q->created)
+		be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
+	be_queue_free(adapter, q);
+}
+
+static int be_tx_queues_create(struct be_adapter *adapter)
+{
+	struct be_queue_info *eq, *q, *cq;
+
+	adapter->tx_eq.max_eqd = 0;
+	adapter->tx_eq.min_eqd = 0;
+	adapter->tx_eq.cur_eqd = 96;
+	adapter->tx_eq.enable_aic = false;
+	/* Alloc Tx Event queue */
+	eq = &adapter->tx_eq.q;
+	if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
+		return -1;
+
+	/* Ask BE to create Tx Event queue */
+	if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
+		goto tx_eq_free;
+	/* Alloc TX eth compl queue */
+	cq = &adapter->tx_obj.cq;
+	if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
+			sizeof(struct be_eth_tx_compl)))
+		goto tx_eq_destroy;
+
+	/* Ask BE to create Tx eth compl queue */
+	if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
+		goto tx_cq_free;
+
+	/* Alloc TX eth queue */
+	q = &adapter->tx_obj.q;
+	if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
+		goto tx_cq_destroy;
+
+	/* Ask BE to create Tx eth queue */
+	if (be_cmd_txq_create(&adapter->ctrl, q, cq))
+		goto tx_q_free;
+	return 0;
+
+tx_q_free:
+	be_queue_free(adapter, q);
+tx_cq_destroy:
+	be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
+tx_cq_free:
+	be_queue_free(adapter, cq);
+tx_eq_destroy:
+	be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
+tx_eq_free:
+	be_queue_free(adapter, eq);
+	return -1;
+}
+
+static void be_rx_queues_destroy(struct be_adapter *adapter)
+{
+	struct be_queue_info *q;
+
+	q = &adapter->rx_obj.q;
+	if (q->created) {
+		be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
+		be_rx_q_clean(adapter);
+	}
+	be_queue_free(adapter, q);
+
+	q = &adapter->rx_obj.cq;
+	if (q->created)
+		be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
+	be_queue_free(adapter, q);
+
+	q = &adapter->rx_eq.q;
+	if (q->created)
+		be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
+	be_queue_free(adapter, q);
+}
+
+static int be_rx_queues_create(struct be_adapter *adapter)
+{
+	struct be_queue_info *eq, *q, *cq;
+	int rc;
+
+	adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
+	adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
+	adapter->rx_eq.max_eqd = BE_MAX_EQD;
+	adapter->rx_eq.min_eqd = 0;
+	adapter->rx_eq.cur_eqd = 0;
+	adapter->rx_eq.enable_aic = true;
+
+	/* Alloc Rx Event queue */
+	eq = &adapter->rx_eq.q;
+	rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
+				sizeof(struct be_eq_entry));
+	if (rc)
+		return rc;
+
+	/* Ask BE to create Rx Event queue */
+	rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
+	if (rc)
+		goto rx_eq_free;
+
+	/* Alloc RX eth compl queue */
+	cq = &adapter->rx_obj.cq;
+	rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
+			sizeof(struct be_eth_rx_compl));
+	if (rc)
+		goto rx_eq_destroy;
+
+	/* Ask BE to create Rx eth compl queue */
+	rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
+	if (rc)
+		goto rx_cq_free;
+
+	/* Alloc RX eth queue */
+	q = &adapter->rx_obj.q;
+	rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
+	if (rc)
+		goto rx_cq_destroy;
+
+	/* Ask BE to create Rx eth queue */
+	rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
+		BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
+	if (rc)
+		goto rx_q_free;
+
+	return 0;
+rx_q_free:
+	be_queue_free(adapter, q);
+rx_cq_destroy:
+	be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
+rx_cq_free:
+	be_queue_free(adapter, cq);
+rx_eq_destroy:
+	be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
+rx_eq_free:
+	be_queue_free(adapter, eq);
+	return rc;
+}
+static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
+{
+	struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
+	u32 evt = entry->evt;
+
+	if (!evt)
+		return false;
+
+	evt = le32_to_cpu(evt);
+	*rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
+	entry->evt = 0;
+	queue_tail_inc(&eq_obj->q);
+	return true;
+}
+
+static int event_handle(struct be_ctrl_info *ctrl,
+			struct be_eq_obj *eq_obj)
+{
+	u16 rid = 0, num = 0;
+
+	while (event_get(eq_obj, &rid))
+		num++;
+
+	/* We can see an interrupt and no event */
+	be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
+	if (num)
+		napi_schedule(&eq_obj->napi);
+
+	return num;
+}
+
+static irqreturn_t be_intx(int irq, void *dev)
+{
+	struct be_adapter *adapter = dev;
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	int rx, tx;
+
+	tx = event_handle(ctrl, &adapter->tx_eq);
+	rx = event_handle(ctrl, &adapter->rx_eq);
+
+	if (rx || tx)
+		return IRQ_HANDLED;
+	else
+		return IRQ_NONE;
+}
+
+static irqreturn_t be_msix_rx(int irq, void *dev)
+{
+	struct be_adapter *adapter = dev;
+
+	event_handle(&adapter->ctrl, &adapter->rx_eq);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t be_msix_tx(int irq, void *dev)
+{
+	struct be_adapter *adapter = dev;
+
+	event_handle(&adapter->ctrl, &adapter->tx_eq);
+
+	return IRQ_HANDLED;
+}
+
+static inline bool do_lro(struct be_adapter *adapter,
+			struct be_eth_rx_compl *rxcp)
+{
+	int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
+	int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
+
+	if (err)
+		drvr_stats(adapter)->be_rxcp_err++;
+
+	return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
+		false : true;
+}
+
+int be_poll_rx(struct napi_struct *napi, int budget)
+{
+	struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
+	struct be_adapter *adapter =
+		container_of(rx_eq, struct be_adapter, rx_eq);
+	struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
+	struct be_eth_rx_compl *rxcp;
+	u32 work_done;
+
+	for (work_done = 0; work_done < budget; work_done++) {
+		rxcp = be_rx_compl_get(adapter);
+		if (!rxcp)
+			break;
+
+		if (do_lro(adapter, rxcp))
+			be_rx_compl_process_lro(adapter, rxcp);
+		else
+			be_rx_compl_process(adapter, rxcp);
+	}
+
+	lro_flush_all(&adapter->rx_obj.lro_mgr);
+
+	/* Refill the queue */
+	if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
+		be_post_rx_frags(adapter);
+
+	/* All consumed */
+	if (work_done < budget) {
+		napi_complete(napi);
+		be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
+	} else {
+		/* More to be consumed; continue with interrupts disabled */
+		be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
+	}
+	return work_done;
+}
+
+/* For TX we don't honour budget; consume everything */
+int be_poll_tx(struct napi_struct *napi, int budget)
+{
+	struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
+	struct be_adapter *adapter =
+		container_of(tx_eq, struct be_adapter, tx_eq);
+	struct be_tx_obj *tx_obj = &adapter->tx_obj;
+	struct be_queue_info *tx_cq = &tx_obj->cq;
+	struct be_queue_info *txq = &tx_obj->q;
+	struct be_eth_tx_compl *txcp;
+	u32 num_cmpl = 0;
+	u16 end_idx;
+
+	while ((txcp = be_tx_compl_get(adapter))) {
+		end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
+					wrb_index, txcp);
+		be_tx_compl_process(adapter, end_idx);
+		num_cmpl++;
+	}
+
+	/* As Tx wrbs have been freed up, wake up netdev queue if
+	 * it was stopped due to lack of tx wrbs.
+	 */
+	if (netif_queue_stopped(adapter->netdev) &&
+			atomic_read(&txq->used) < txq->len / 2) {
+		netif_wake_queue(adapter->netdev);
+	}
+
+	napi_complete(napi);
+
+	be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
+
+	drvr_stats(adapter)->be_tx_events++;
+	drvr_stats(adapter)->be_tx_compl += num_cmpl;
+
+	return 1;
+}
+
+static void be_worker(struct work_struct *work)
+{
+	struct be_adapter *adapter =
+		container_of(work, struct be_adapter, work.work);
+	int status;
+
+	/* Check link */
+	be_link_status_update(adapter);
+
+	/* Get Stats */
+	status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
+	if (!status)
+		netdev_stats_update(adapter);
+
+	/* Set EQ delay */
+	be_rx_eqd_update(adapter);
+
+	if (adapter->rx_post_starved) {
+		adapter->rx_post_starved = false;
+		be_post_rx_frags(adapter);
+	}
+
+	schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
+}
+
+static void be_msix_enable(struct be_adapter *adapter)
+{
+	int i, status;
+
+	for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
+		adapter->msix_entries[i].entry = i;
+
+	status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
+		BE_NUM_MSIX_VECTORS);
+	if (status == 0)
+		adapter->msix_enabled = true;
+	return;
+}
+
+static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
+{
+	return adapter->msix_entries[eq_id -
+			8 * adapter->ctrl.pci_func].vector;
+}
+
+static int be_msix_register(struct be_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct be_eq_obj *tx_eq = &adapter->tx_eq;
+	struct be_eq_obj *rx_eq = &adapter->rx_eq;
+	int status, vec;
+
+	sprintf(tx_eq->desc, "%s-tx", netdev->name);
+	vec = be_msix_vec_get(adapter, tx_eq->q.id);
+	status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
+	if (status)
+		goto err;
+
+	sprintf(rx_eq->desc, "%s-rx", netdev->name);
+	vec = be_msix_vec_get(adapter, rx_eq->q.id);
+	status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
+	if (status) { /* Free TX IRQ */
+		vec = be_msix_vec_get(adapter, tx_eq->q.id);
+		free_irq(vec, adapter);
+		goto err;
+	}
+	return 0;
+err:
+	dev_warn(&adapter->pdev->dev,
+		"MSIX Request IRQ failed - err %d\n", status);
+	pci_disable_msix(adapter->pdev);
+	adapter->msix_enabled = false;
+	return status;
+}
+
+static int be_irq_register(struct be_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int status;
+
+	if (adapter->msix_enabled) {
+		status = be_msix_register(adapter);
+		if (status == 0)
+			goto done;
+	}
+
+	/* INTx */
+	netdev->irq = adapter->pdev->irq;
+	status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
+			adapter);
+	if (status) {
+		dev_err(&adapter->pdev->dev,
+			"INTx request IRQ failed - err %d\n", status);
+		return status;
+	}
+done:
+	adapter->isr_registered = true;
+	return 0;
+}
+
+static void be_irq_unregister(struct be_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int vec;
+
+	if (!adapter->isr_registered)
+		return;
+
+	/* INTx */
+	if (!adapter->msix_enabled) {
+		free_irq(netdev->irq, adapter);
+		goto done;
+	}
+
+	/* MSIx */
+	vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
+	free_irq(vec, adapter);
+	vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
+	free_irq(vec, adapter);
+done:
+	adapter->isr_registered = false;
+	return;
+}
+
+static int be_open(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	struct be_eq_obj *rx_eq = &adapter->rx_eq;
+	struct be_eq_obj *tx_eq = &adapter->tx_eq;
+	u32 if_flags;
+	int status;
+
+	if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
+		BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
+		BE_IF_FLAGS_PASS_L3L4_ERRORS;
+	status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
+			false/* pmac_invalid */, &adapter->if_handle,
+			&adapter->pmac_id);
+	if (status != 0)
+		goto do_none;
+
+	be_vid_config(netdev);
+
+	status = be_cmd_set_flow_control(ctrl, true, true);
+	if (status != 0)
+		goto if_destroy;
+
+	status = be_tx_queues_create(adapter);
+	if (status != 0)
+		goto if_destroy;
+
+	status = be_rx_queues_create(adapter);
+	if (status != 0)
+		goto tx_qs_destroy;
+
+	/* First time posting */
+	be_post_rx_frags(adapter);
+
+	napi_enable(&rx_eq->napi);
+	napi_enable(&tx_eq->napi);
+
+	be_irq_register(adapter);
+
+	be_intr_set(ctrl, true);
+
+	/* The evt queues are created in the unarmed state; arm them */
+	be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
+	be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
+
+	/* The compl queues are created in the unarmed state; arm them */
+	be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
+	be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
+
+	be_link_status_update(adapter);
+
+	schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
+	return 0;
+
+tx_qs_destroy:
+	be_tx_queues_destroy(adapter);
+if_destroy:
+	be_cmd_if_destroy(ctrl, adapter->if_handle);
+do_none:
+	return status;
+}
+
+static int be_close(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	struct be_eq_obj *rx_eq = &adapter->rx_eq;
+	struct be_eq_obj *tx_eq = &adapter->tx_eq;
+	int vec;
+
+	cancel_delayed_work(&adapter->work);
+
+	netif_stop_queue(netdev);
+	netif_carrier_off(netdev);
+	adapter->link.speed = PHY_LINK_SPEED_ZERO;
+
+	be_intr_set(ctrl, false);
+
+	if (adapter->msix_enabled) {
+		vec = be_msix_vec_get(adapter, tx_eq->q.id);
+		synchronize_irq(vec);
+		vec = be_msix_vec_get(adapter, rx_eq->q.id);
+		synchronize_irq(vec);
+	} else {
+		synchronize_irq(netdev->irq);
+	}
+	be_irq_unregister(adapter);
+
+	napi_disable(&rx_eq->napi);
+	napi_disable(&tx_eq->napi);
+
+	be_rx_queues_destroy(adapter);
+	be_tx_queues_destroy(adapter);
+
+	be_cmd_if_destroy(ctrl, adapter->if_handle);
+	return 0;
+}
+
+static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
+				void **ip_hdr, void **tcpudp_hdr,
+				u64 *hdr_flags, void *priv)
+{
+	struct ethhdr *eh;
+	struct vlan_ethhdr *veh;
+	struct iphdr *iph;
+	u8 *va = page_address(frag->page) + frag->page_offset;
+	unsigned long ll_hlen;
+
+	prefetch(va);
+	eh = (struct ethhdr *)va;
+	*mac_hdr = eh;
+	ll_hlen = ETH_HLEN;
+	if (eh->h_proto != htons(ETH_P_IP)) {
+		if (eh->h_proto == htons(ETH_P_8021Q)) {
+			veh = (struct vlan_ethhdr *)va;
+			if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
+				return -1;
+
+			ll_hlen += VLAN_HLEN;
+		} else {
+			return -1;
+		}
+	}
+	*hdr_flags = LRO_IPV4;
+	iph = (struct iphdr *)(va + ll_hlen);
+	*ip_hdr = iph;
+	if (iph->protocol != IPPROTO_TCP)
+		return -1;
+	*hdr_flags |= LRO_TCP;
+	*tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
+
+	return 0;
+}
+
+static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
+{
+	struct net_lro_mgr *lro_mgr;
+
+	lro_mgr = &adapter->rx_obj.lro_mgr;
+	lro_mgr->dev = netdev;
+	lro_mgr->features = LRO_F_NAPI;
+	lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
+	lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
+	lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
+	lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
+	lro_mgr->get_frag_header = be_get_frag_header;
+	lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
+}
+
+static struct net_device_ops be_netdev_ops = {
+	.ndo_open		= be_open,
+	.ndo_stop		= be_close,
+	.ndo_start_xmit		= be_xmit,
+	.ndo_get_stats		= be_get_stats,
+	.ndo_set_rx_mode	= be_set_multicast_list,
+	.ndo_set_mac_address	= be_mac_addr_set,
+	.ndo_change_mtu		= be_change_mtu,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_vlan_rx_register	= be_vlan_register,
+	.ndo_vlan_rx_add_vid	= be_vlan_add_vid,
+	.ndo_vlan_rx_kill_vid	= be_vlan_rem_vid,
+};
+
+static void be_netdev_init(struct net_device *netdev)
+{
+	struct be_adapter *adapter = netdev_priv(netdev);
+
+	netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
+		NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
+		NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
+
+	netdev->flags |= IFF_MULTICAST;
+
+	BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
+
+	SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
+
+	be_lro_init(adapter, netdev);
+
+	netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
+		BE_NAPI_WEIGHT);
+	netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
+		BE_NAPI_WEIGHT);
+
+	netif_carrier_off(netdev);
+	netif_stop_queue(netdev);
+}
+
+static void be_unmap_pci_bars(struct be_adapter *adapter)
+{
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	if (ctrl->csr)
+		iounmap(ctrl->csr);
+	if (ctrl->db)
+		iounmap(ctrl->db);
+	if (ctrl->pcicfg)
+		iounmap(ctrl->pcicfg);
+}
+
+static int be_map_pci_bars(struct be_adapter *adapter)
+{
+	u8 __iomem *addr;
+
+	addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
+			pci_resource_len(adapter->pdev, 2));
+	if (addr == NULL)
+		return -ENOMEM;
+	adapter->ctrl.csr = addr;
+
+	addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
+			128 * 1024);
+	if (addr == NULL)
+		goto pci_map_err;
+	adapter->ctrl.db = addr;
+
+	addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
+			pci_resource_len(adapter->pdev, 1));
+	if (addr == NULL)
+		goto pci_map_err;
+	adapter->ctrl.pcicfg = addr;
+
+	return 0;
+pci_map_err:
+	be_unmap_pci_bars(adapter);
+	return -ENOMEM;
+}
+
+
+static void be_ctrl_cleanup(struct be_adapter *adapter)
+{
+	struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
+
+	be_unmap_pci_bars(adapter);
+
+	if (mem->va)
+		pci_free_consistent(adapter->pdev, mem->size,
+			mem->va, mem->dma);
+}
+
+/* Initialize the mbox required to send cmds to BE */
+static int be_ctrl_init(struct be_adapter *adapter)
+{
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
+	struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
+	int status;
+	u32 val;
+
+	status = be_map_pci_bars(adapter);
+	if (status)
+		return status;
+
+	mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
+	mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
+				mbox_mem_alloc->size, &mbox_mem_alloc->dma);
+	if (!mbox_mem_alloc->va) {
+		be_unmap_pci_bars(adapter);
+		return -1;
+	}
+	mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
+	mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
+	mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
+	memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
+	spin_lock_init(&ctrl->cmd_lock);
+
+	val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
+	ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
+					MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
+	return 0;
+}
+
+static void be_stats_cleanup(struct be_adapter *adapter)
+{
+	struct be_stats_obj *stats = &adapter->stats;
+	struct be_dma_mem *cmd = &stats->cmd;
+
+	if (cmd->va)
+		pci_free_consistent(adapter->pdev, cmd->size,
+			cmd->va, cmd->dma);
+}
+
+static int be_stats_init(struct be_adapter *adapter)
+{
+	struct be_stats_obj *stats = &adapter->stats;
+	struct be_dma_mem *cmd = &stats->cmd;
+
+	cmd->size = sizeof(struct be_cmd_req_get_stats);
+	cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
+	if (cmd->va == NULL)
+		return -1;
+	return 0;
+}
+
+static void __devexit be_remove(struct pci_dev *pdev)
+{
+	struct be_adapter *adapter = pci_get_drvdata(pdev);
+	if (!adapter)
+		return;
+
+	unregister_netdev(adapter->netdev);
+
+	be_stats_cleanup(adapter);
+
+	be_ctrl_cleanup(adapter);
+
+	if (adapter->msix_enabled) {
+		pci_disable_msix(adapter->pdev);
+		adapter->msix_enabled = false;
+	}
+
+	pci_set_drvdata(pdev, NULL);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+
+	free_netdev(adapter->netdev);
+}
+
+static int be_hw_up(struct be_adapter *adapter)
+{
+	struct be_ctrl_info *ctrl = &adapter->ctrl;
+	int status;
+
+	status = be_cmd_POST(ctrl);
+	if (status)
+		return status;
+
+	status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
+	if (status)
+		return status;
+
+	status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
+	return status;
+}
+
+static int __devinit be_probe(struct pci_dev *pdev,
+			const struct pci_device_id *pdev_id)
+{
+	int status = 0;
+	struct be_adapter *adapter;
+	struct net_device *netdev;
+	struct be_ctrl_info *ctrl;
+	u8 mac[ETH_ALEN];
+
+	status = pci_enable_device(pdev);
+	if (status)
+		goto do_none;
+
+	status = pci_request_regions(pdev, DRV_NAME);
+	if (status)
+		goto disable_dev;
+	pci_set_master(pdev);
+
+	netdev = alloc_etherdev(sizeof(struct be_adapter));
+	if (netdev == NULL) {
+		status = -ENOMEM;
+		goto rel_reg;
+	}
+	adapter = netdev_priv(netdev);
+	adapter->pdev = pdev;
+	pci_set_drvdata(pdev, adapter);
+	adapter->netdev = netdev;
+
+	be_msix_enable(adapter);
+
+	status = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
+	if (!status) {
+		netdev->features |= NETIF_F_HIGHDMA;
+	} else {
+		status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+		if (status) {
+			dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
+			goto free_netdev;
+		}
+	}
+
+	ctrl = &adapter->ctrl;
+	status = be_ctrl_init(adapter);
+	if (status)
+		goto free_netdev;
+
+	status = be_stats_init(adapter);
+	if (status)
+		goto ctrl_clean;
+
+	status = be_hw_up(adapter);
+	if (status)
+		goto stats_clean;
+
+	status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
+			true /* permanent */, 0);
+	if (status)
+		goto stats_clean;
+	memcpy(netdev->dev_addr, mac, ETH_ALEN);
+
+	INIT_DELAYED_WORK(&adapter->work, be_worker);
+	be_netdev_init(netdev);
+	SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
+
+	status = register_netdev(netdev);
+	if (status != 0)
+		goto stats_clean;
+
+	dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
+	return 0;
+
+stats_clean:
+	be_stats_cleanup(adapter);
+ctrl_clean:
+	be_ctrl_cleanup(adapter);
+free_netdev:
+	free_netdev(adapter->netdev);
+rel_reg:
+	pci_release_regions(pdev);
+disable_dev:
+	pci_disable_device(pdev);
+do_none:
+	dev_warn(&pdev->dev, BE_NAME " initialization failed\n");
+	return status;
+}
+
+static int be_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct be_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev =  adapter->netdev;
+
+	netif_device_detach(netdev);
+	if (netif_running(netdev)) {
+		rtnl_lock();
+		be_close(netdev);
+		rtnl_unlock();
+	}
+
+	pci_save_state(pdev);
+	pci_disable_device(pdev);
+	pci_set_power_state(pdev, pci_choose_state(pdev, state));
+	return 0;
+}
+
+static int be_resume(struct pci_dev *pdev)
+{
+	int status = 0;
+	struct be_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev =  adapter->netdev;
+
+	netif_device_detach(netdev);
+
+	status = pci_enable_device(pdev);
+	if (status)
+		return status;
+
+	pci_set_power_state(pdev, 0);
+	pci_restore_state(pdev);
+
+	if (netif_running(netdev)) {
+		rtnl_lock();
+		be_open(netdev);
+		rtnl_unlock();
+	}
+	netif_device_attach(netdev);
+	return 0;
+}
+
+static struct pci_driver be_driver = {
+	.name = DRV_NAME,
+	.id_table = be_dev_ids,
+	.probe = be_probe,
+	.remove = be_remove,
+	.suspend = be_suspend,
+	.resume = be_resume
+};
+
+static int __init be_init_module(void)
+{
+	if (rx_frag_size != 8192 && rx_frag_size != 4096
+		&& rx_frag_size != 2048) {
+		printk(KERN_WARNING DRV_NAME
+			" : Module param rx_frag_size must be 2048/4096/8192."
+			" Using 2048\n");
+		rx_frag_size = 2048;
+	}
+	/* Ensure rx_frag_size is aligned to chache line */
+	if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
+		printk(KERN_WARNING DRV_NAME
+			" : Bad module param rx_frag_size. Using 2048\n");
+		rx_frag_size = 2048;
+	}
+
+	return pci_register_driver(&be_driver);
+}
+module_init(be_init_module);
+
+static void __exit be_exit_module(void)
+{
+	pci_unregister_driver(&be_driver);
+}
+module_exit(be_exit_module);