qlcnic: Qlogic ethernet driver for CNA devices

o 1G/10G Ethernet Driver for Qlgic QLE8240 and QLE8242 CNA devices.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2604 insertions, 0 deletions

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
new file mode 100644
index 000000000000..1698b6a68ed1
--- /dev/null
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -0,0 +1,2604 @@
+/*
+ * Copyright (C) 2009 - QLogic Corporation.
+ * 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
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA  02111-1307, USA.
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called "COPYING".
+ *
+ */
+
+#include <linux/vmalloc.h>
+#include <linux/interrupt.h>
+
+#include "qlcnic.h"
+
+#include <linux/dma-mapping.h>
+#include <linux/if_vlan.h>
+#include <net/ip.h>
+#include <linux/ipv6.h>
+#include <linux/inetdevice.h>
+#include <linux/sysfs.h>
+
+MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
+MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
+
+char qlcnic_driver_name[] = "qlcnic";
+static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v"
+    QLCNIC_LINUX_VERSIONID;
+
+static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
+
+/* Default to restricted 1G auto-neg mode */
+static int wol_port_mode = 5;
+
+static int use_msi = 1;
+module_param(use_msi, int, 0644);
+MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
+
+static int use_msi_x = 1;
+module_param(use_msi_x, int, 0644);
+MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
+
+static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
+module_param(auto_fw_reset, int, 0644);
+MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
+
+static int __devinit qlcnic_probe(struct pci_dev *pdev,
+		const struct pci_device_id *ent);
+static void __devexit qlcnic_remove(struct pci_dev *pdev);
+static int qlcnic_open(struct net_device *netdev);
+static int qlcnic_close(struct net_device *netdev);
+static netdev_tx_t qlcnic_xmit_frame(struct sk_buff *,
+					       struct net_device *);
+static void qlcnic_tx_timeout(struct net_device *netdev);
+static void qlcnic_tx_timeout_task(struct work_struct *work);
+static void qlcnic_attach_work(struct work_struct *work);
+static void qlcnic_fwinit_work(struct work_struct *work);
+static void qlcnic_fw_poll_work(struct work_struct *work);
+static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
+		work_func_t func, int delay);
+static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
+static int qlcnic_poll(struct napi_struct *napi, int budget);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void qlcnic_poll_controller(struct net_device *netdev);
+#endif
+
+static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
+static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
+static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
+static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
+
+static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
+static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
+
+static irqreturn_t qlcnic_intr(int irq, void *data);
+static irqreturn_t qlcnic_msi_intr(int irq, void *data);
+static irqreturn_t qlcnic_msix_intr(int irq, void *data);
+
+static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
+static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
+
+/*  PCI Device ID Table  */
+#define ENTRY(device) \
+	{PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
+	.class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
+
+#define PCI_DEVICE_ID_QLOGIC_QLE824X  0x8020
+
+static const struct pci_device_id qlcnic_pci_tbl[] __devinitdata = {
+	ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
+	{0,}
+};
+
+MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
+
+
+void
+qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
+		struct qlcnic_host_tx_ring *tx_ring)
+{
+	writel(tx_ring->producer, tx_ring->crb_cmd_producer);
+
+	if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) {
+		netif_stop_queue(adapter->netdev);
+		smp_mb();
+	}
+}
+
+static const u32 msi_tgt_status[8] = {
+	ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
+	ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
+	ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
+	ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
+};
+
+static const
+struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
+
+static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
+{
+	writel(0, sds_ring->crb_intr_mask);
+}
+
+static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
+{
+	struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+	writel(0x1, sds_ring->crb_intr_mask);
+
+	if (!QLCNIC_IS_MSI_FAMILY(adapter))
+		writel(0xfbff, adapter->tgt_mask_reg);
+}
+
+static int
+qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
+{
+	int size = sizeof(struct qlcnic_host_sds_ring) * count;
+
+	recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
+
+	return (recv_ctx->sds_rings == NULL);
+}
+
+static void
+qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
+{
+	if (recv_ctx->sds_rings != NULL)
+		kfree(recv_ctx->sds_rings);
+
+	recv_ctx->sds_rings = NULL;
+}
+
+static int
+qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+	int ring;
+	struct qlcnic_host_sds_ring *sds_ring;
+	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+	if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
+		return -ENOMEM;
+
+	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+		sds_ring = &recv_ctx->sds_rings[ring];
+		netif_napi_add(netdev, &sds_ring->napi,
+				qlcnic_poll, QLCNIC_NETDEV_WEIGHT);
+	}
+
+	return 0;
+}
+
+static void
+qlcnic_napi_del(struct qlcnic_adapter *adapter)
+{
+	int ring;
+	struct qlcnic_host_sds_ring *sds_ring;
+	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+		sds_ring = &recv_ctx->sds_rings[ring];
+		netif_napi_del(&sds_ring->napi);
+	}
+
+	qlcnic_free_sds_rings(&adapter->recv_ctx);
+}
+
+static void
+qlcnic_napi_enable(struct qlcnic_adapter *adapter)
+{
+	int ring;
+	struct qlcnic_host_sds_ring *sds_ring;
+	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+		sds_ring = &recv_ctx->sds_rings[ring];
+		napi_enable(&sds_ring->napi);
+		qlcnic_enable_int(sds_ring);
+	}
+}
+
+static void
+qlcnic_napi_disable(struct qlcnic_adapter *adapter)
+{
+	int ring;
+	struct qlcnic_host_sds_ring *sds_ring;
+	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+		sds_ring = &recv_ctx->sds_rings[ring];
+		qlcnic_disable_int(sds_ring);
+		napi_synchronize(&sds_ring->napi);
+		napi_disable(&sds_ring->napi);
+	}
+}
+
+static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
+{
+	memset(&adapter->stats, 0, sizeof(adapter->stats));
+	return;
+}
+
+static int qlcnic_set_dma_mask(struct qlcnic_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	u64 mask, cmask;
+
+	adapter->pci_using_dac = 0;
+
+	mask = DMA_BIT_MASK(39);
+	cmask = mask;
+
+	if (pci_set_dma_mask(pdev, mask) == 0 &&
+			pci_set_consistent_dma_mask(pdev, cmask) == 0) {
+		adapter->pci_using_dac = 1;
+		return 0;
+	}
+
+	return -EIO;
+}
+
+/* Update addressable range if firmware supports it */
+static int
+qlcnic_update_dma_mask(struct qlcnic_adapter *adapter)
+{
+	int change, shift, err;
+	u64 mask, old_mask, old_cmask;
+	struct pci_dev *pdev = adapter->pdev;
+
+	change = 0;
+
+	shift = QLCRD32(adapter, CRB_DMA_SHIFT);
+	if (shift > 32)
+		return 0;
+
+	if (shift > 9)
+		change = 1;
+
+	if (change) {
+		old_mask = pdev->dma_mask;
+		old_cmask = pdev->dev.coherent_dma_mask;
+
+		mask = DMA_BIT_MASK(32+shift);
+
+		err = pci_set_dma_mask(pdev, mask);
+		if (err)
+			goto err_out;
+
+		err = pci_set_consistent_dma_mask(pdev, mask);
+		if (err)
+			goto err_out;
+		dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
+	}
+
+	return 0;
+
+err_out:
+	pci_set_dma_mask(pdev, old_mask);
+	pci_set_consistent_dma_mask(pdev, old_cmask);
+	return err;
+}
+
+static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
+{
+	u32 val, data;
+
+	val = adapter->ahw.board_type;
+	if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
+		(val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
+		if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
+			data = QLCNIC_PORT_MODE_802_3_AP;
+			QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+		} else if (port_mode == QLCNIC_PORT_MODE_XG) {
+			data = QLCNIC_PORT_MODE_XG;
+			QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+		} else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
+			data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
+			QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+		} else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
+			data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
+			QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+		} else {
+			data = QLCNIC_PORT_MODE_AUTO_NEG;
+			QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
+		}
+
+		if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
+			(wol_port_mode != QLCNIC_PORT_MODE_XG) &&
+			(wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
+			(wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
+			wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
+		}
+		QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
+	}
+}
+
+static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
+{
+	u32 control;
+	int pos;
+
+	pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
+	if (pos) {
+		pci_read_config_dword(pdev, pos, &control);
+		if (enable)
+			control |= PCI_MSIX_FLAGS_ENABLE;
+		else
+			control = 0;
+		pci_write_config_dword(pdev, pos, control);
+	}
+}
+
+static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
+{
+	int i;
+
+	for (i = 0; i < count; i++)
+		adapter->msix_entries[i].entry = i;
+}
+
+static int
+qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
+{
+	int i;
+	unsigned char *p;
+	u64 mac_addr;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+
+	if (qlcnic_get_mac_addr(adapter, &mac_addr) != 0)
+		return -EIO;
+
+	p = (unsigned char *)&mac_addr;
+	for (i = 0; i < 6; i++)
+		netdev->dev_addr[i] = *(p + 5 - i);
+
+	memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
+	memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
+
+	/* set station address */
+
+	if (!is_valid_ether_addr(netdev->perm_addr))
+		dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
+					netdev->dev_addr);
+
+	return 0;
+}
+
+static int qlcnic_set_mac(struct net_device *netdev, void *p)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EINVAL;
+
+	if (netif_running(netdev)) {
+		netif_device_detach(netdev);
+		qlcnic_napi_disable(adapter);
+	}
+
+	memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	qlcnic_set_multi(adapter->netdev);
+
+	if (netif_running(netdev)) {
+		netif_device_attach(netdev);
+		qlcnic_napi_enable(adapter);
+	}
+	return 0;
+}
+
+static const struct net_device_ops qlcnic_netdev_ops = {
+	.ndo_open	   = qlcnic_open,
+	.ndo_stop	   = qlcnic_close,
+	.ndo_start_xmit    = qlcnic_xmit_frame,
+	.ndo_get_stats	   = qlcnic_get_stats,
+	.ndo_validate_addr = eth_validate_addr,
+	.ndo_set_multicast_list = qlcnic_set_multi,
+	.ndo_set_mac_address    = qlcnic_set_mac,
+	.ndo_change_mtu	   = qlcnic_change_mtu,
+	.ndo_tx_timeout	   = qlcnic_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller = qlcnic_poll_controller,
+#endif
+};
+
+static void
+qlcnic_setup_intr(struct qlcnic_adapter *adapter)
+{
+	const struct qlcnic_legacy_intr_set *legacy_intrp;
+	struct pci_dev *pdev = adapter->pdev;
+	int err, num_msix;
+
+	if (adapter->rss_supported) {
+		num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
+			MSIX_ENTRIES_PER_ADAPTER : 2;
+	} else
+		num_msix = 1;
+
+	adapter->max_sds_rings = 1;
+
+	adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
+
+	legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
+
+	adapter->int_vec_bit = legacy_intrp->int_vec_bit;
+	adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
+			legacy_intrp->tgt_status_reg);
+	adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
+			legacy_intrp->tgt_mask_reg);
+	adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
+
+	adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
+			ISR_INT_STATE_REG);
+
+	qlcnic_set_msix_bit(pdev, 0);
+
+	if (adapter->msix_supported) {
+
+		qlcnic_init_msix_entries(adapter, num_msix);
+		err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
+		if (err == 0) {
+			adapter->flags |= QLCNIC_MSIX_ENABLED;
+			qlcnic_set_msix_bit(pdev, 1);
+
+			if (adapter->rss_supported)
+				adapter->max_sds_rings = num_msix;
+
+			dev_info(&pdev->dev, "using msi-x interrupts\n");
+			return;
+		}
+
+		if (err > 0)
+			pci_disable_msix(pdev);
+
+		/* fall through for msi */
+	}
+
+	if (use_msi && !pci_enable_msi(pdev)) {
+		adapter->flags |= QLCNIC_MSI_ENABLED;
+		adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
+				msi_tgt_status[adapter->ahw.pci_func]);
+		dev_info(&pdev->dev, "using msi interrupts\n");
+		adapter->msix_entries[0].vector = pdev->irq;
+		return;
+	}
+
+	dev_info(&pdev->dev, "using legacy interrupts\n");
+	adapter->msix_entries[0].vector = pdev->irq;
+}
+
+static void
+qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
+{
+	if (adapter->flags & QLCNIC_MSIX_ENABLED)
+		pci_disable_msix(adapter->pdev);
+	if (adapter->flags & QLCNIC_MSI_ENABLED)
+		pci_disable_msi(adapter->pdev);
+}
+
+static void
+qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
+{
+	if (adapter->ahw.pci_base0 != NULL)
+		iounmap(adapter->ahw.pci_base0);
+}
+
+static int
+qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
+{
+	void __iomem *mem_ptr0 = NULL;
+	resource_size_t mem_base;
+	unsigned long mem_len, pci_len0 = 0;
+
+	struct pci_dev *pdev = adapter->pdev;
+	int pci_func = adapter->ahw.pci_func;
+
+	/*
+	 * Set the CRB window to invalid. If any register in window 0 is
+	 * accessed it should set the window to 0 and then reset it to 1.
+	 */
+	adapter->ahw.crb_win = -1;
+	adapter->ahw.ocm_win = -1;
+
+	/* remap phys address */
+	mem_base = pci_resource_start(pdev, 0);	/* 0 is for BAR 0 */
+	mem_len = pci_resource_len(pdev, 0);
+
+	if (mem_len == QLCNIC_PCI_2MB_SIZE) {
+
+		mem_ptr0 = pci_ioremap_bar(pdev, 0);
+		if (mem_ptr0 == NULL) {
+			dev_err(&pdev->dev, "failed to map PCI bar 0\n");
+			return -EIO;
+		}
+		pci_len0 = mem_len;
+	} else {
+		return -EIO;
+	}
+
+	dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
+
+	adapter->ahw.pci_base0 = mem_ptr0;
+	adapter->ahw.pci_len0 = pci_len0;
+
+	adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
+		QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
+
+	return 0;
+}
+
+static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	int i, found = 0;
+
+	for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
+		if (qlcnic_boards[i].vendor == pdev->vendor &&
+			qlcnic_boards[i].device == pdev->device &&
+			qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
+			qlcnic_boards[i].sub_device == pdev->subsystem_device) {
+				strcpy(name, qlcnic_boards[i].short_name);
+				found = 1;
+				break;
+		}
+
+	}
+
+	if (!found)
+		name = "Unknown";
+}
+
+static void
+qlcnic_check_options(struct qlcnic_adapter *adapter)
+{
+	u32 fw_major, fw_minor, fw_build;
+	char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
+	char serial_num[32];
+	int i, offset, val;
+	int *ptr32;
+	struct pci_dev *pdev = adapter->pdev;
+
+	adapter->driver_mismatch = 0;
+
+	ptr32 = (int *)&serial_num;
+	offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
+	for (i = 0; i < 8; i++) {
+		if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
+			dev_err(&pdev->dev, "error reading board info\n");
+			adapter->driver_mismatch = 1;
+			return;
+		}
+		ptr32[i] = cpu_to_le32(val);
+		offset += sizeof(u32);
+	}
+
+	fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
+	fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
+	fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
+
+	adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
+
+	if (adapter->portnum == 0) {
+		get_brd_name(adapter, brd_name);
+
+		pr_info("%s: %s Board Chip rev 0x%x\n",
+				module_name(THIS_MODULE),
+				brd_name, adapter->ahw.revision_id);
+	}
+
+	if (adapter->fw_version < QLCNIC_VERSION_CODE(3, 4, 216)) {
+		adapter->driver_mismatch = 1;
+		dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
+				fw_major, fw_minor, fw_build);
+		return;
+	}
+
+	i = QLCRD32(adapter, QLCNIC_SRE_MISC);
+	adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
+
+	dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
+			fw_major, fw_minor, fw_build,
+			adapter->ahw.cut_through ? "cut-through" : "legacy");
+
+	if (adapter->fw_version >= QLCNIC_VERSION_CODE(4, 0, 222))
+		adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
+
+	adapter->flags &= ~QLCNIC_LRO_ENABLED;
+
+	if (adapter->ahw.port_type == QLCNIC_XGBE) {
+		adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
+		adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
+	} else if (adapter->ahw.port_type == QLCNIC_GBE) {
+		adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
+		adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
+	}
+
+	adapter->msix_supported = !!use_msi_x;
+	adapter->rss_supported = !!use_msi_x;
+
+	adapter->num_txd = MAX_CMD_DESCRIPTORS;
+
+	adapter->num_lro_rxd = 0;
+	adapter->max_rds_rings = 2;
+}
+
+static int
+qlcnic_start_firmware(struct qlcnic_adapter *adapter)
+{
+	int val, err, first_boot;
+
+	err = qlcnic_set_dma_mask(adapter);
+	if (err)
+		return err;
+
+	if (!qlcnic_can_start_firmware(adapter))
+		goto wait_init;
+
+	first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
+	if (first_boot == 0x55555555)
+		/* This is the first boot after power up */
+		QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
+
+	qlcnic_request_firmware(adapter);
+
+	err = qlcnic_need_fw_reset(adapter);
+	if (err < 0)
+		goto err_out;
+	if (err == 0)
+		goto wait_init;
+
+	if (first_boot != 0x55555555) {
+		QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
+		qlcnic_pinit_from_rom(adapter);
+		msleep(1);
+	}
+
+	QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
+	QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
+	QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
+
+	qlcnic_set_port_mode(adapter);
+
+	err = qlcnic_load_firmware(adapter);
+	if (err)
+		goto err_out;
+
+	qlcnic_release_firmware(adapter);
+
+	val = (_QLCNIC_LINUX_MAJOR << 16)
+		| ((_QLCNIC_LINUX_MINOR << 8))
+		| (_QLCNIC_LINUX_SUBVERSION);
+	QLCWR32(adapter, CRB_DRIVER_VERSION, val);
+
+wait_init:
+	/* Handshake with the card before we register the devices. */
+	err = qlcnic_phantom_init(adapter);
+	if (err)
+		goto err_out;
+
+	QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
+
+	qlcnic_update_dma_mask(adapter);
+
+	qlcnic_check_options(adapter);
+
+	adapter->need_fw_reset = 0;
+
+	/* fall through and release firmware */
+
+err_out:
+	qlcnic_release_firmware(adapter);
+	return err;
+}
+
+static int
+qlcnic_request_irq(struct qlcnic_adapter *adapter)
+{
+	irq_handler_t handler;
+	struct qlcnic_host_sds_ring *sds_ring;
+	int err, ring;
+
+	unsigned long flags = 0;
+	struct net_device *netdev = adapter->netdev;
+	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+	if (adapter->flags & QLCNIC_MSIX_ENABLED)
+		handler = qlcnic_msix_intr;
+	else if (adapter->flags & QLCNIC_MSI_ENABLED)
+		handler = qlcnic_msi_intr;
+	else {
+		flags |= IRQF_SHARED;
+		handler = qlcnic_intr;
+	}
+	adapter->irq = netdev->irq;
+
+	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+		sds_ring = &recv_ctx->sds_rings[ring];
+		sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
+		err = request_irq(sds_ring->irq, handler,
+				  flags, sds_ring->name, sds_ring);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static void
+qlcnic_free_irq(struct qlcnic_adapter *adapter)
+{
+	int ring;
+	struct qlcnic_host_sds_ring *sds_ring;
+
+	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
+
+	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+		sds_ring = &recv_ctx->sds_rings[ring];
+		free_irq(sds_ring->irq, sds_ring);
+	}
+}
+
+static void
+qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
+{
+	adapter->coal.flags = QLCNIC_INTR_DEFAULT;
+	adapter->coal.normal.data.rx_time_us =
+		QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
+	adapter->coal.normal.data.rx_packets =
+		QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
+	adapter->coal.normal.data.tx_time_us =
+		QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
+	adapter->coal.normal.data.tx_packets =
+		QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
+}
+
+static int
+__qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+		return -EIO;
+
+	qlcnic_set_multi(netdev);
+	qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
+
+	adapter->ahw.linkup = 0;
+
+	if (adapter->max_sds_rings > 1)
+		qlcnic_config_rss(adapter, 1);
+
+	qlcnic_config_intr_coalesce(adapter);
+
+	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
+		qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
+
+	qlcnic_napi_enable(adapter);
+
+	qlcnic_linkevent_request(adapter, 1);
+
+	set_bit(__QLCNIC_DEV_UP, &adapter->state);
+	return 0;
+}
+
+/* Usage: During resume and firmware recovery module.*/
+
+static int
+qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+	int err = 0;
+
+	rtnl_lock();
+	if (netif_running(netdev))
+		err = __qlcnic_up(adapter, netdev);
+	rtnl_unlock();
+
+	return err;
+}
+
+static void
+__qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+		return;
+
+	if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
+		return;
+
+	smp_mb();
+	spin_lock(&adapter->tx_clean_lock);
+	netif_carrier_off(netdev);
+	netif_tx_disable(netdev);
+
+	qlcnic_free_mac_list(adapter);
+
+	qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
+
+	qlcnic_napi_disable(adapter);
+
+	qlcnic_release_tx_buffers(adapter);
+	spin_unlock(&adapter->tx_clean_lock);
+}
+
+/* Usage: During suspend and firmware recovery module */
+
+static void
+qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
+{
+	rtnl_lock();
+	if (netif_running(netdev))
+		__qlcnic_down(adapter, netdev);
+	rtnl_unlock();
+
+}
+
+static int
+qlcnic_attach(struct qlcnic_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	int err, ring;
+	struct qlcnic_host_rds_ring *rds_ring;
+
+	if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
+		return 0;
+
+	err = qlcnic_init_firmware(adapter);
+	if (err)
+		return err;
+
+	err = qlcnic_napi_add(adapter, netdev);
+	if (err)
+		return err;
+
+	err = qlcnic_alloc_sw_resources(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "Error in setting sw resources\n");
+		return err;
+	}
+
+	err = qlcnic_alloc_hw_resources(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "Error in setting hw resources\n");
+		goto err_out_free_sw;
+	}
+
+
+	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
+		rds_ring = &adapter->recv_ctx.rds_rings[ring];
+		qlcnic_post_rx_buffers(adapter, ring, rds_ring);
+	}
+
+	err = qlcnic_request_irq(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "failed to setup interrupt\n");
+		goto err_out_free_rxbuf;
+	}
+
+	qlcnic_init_coalesce_defaults(adapter);
+
+	qlcnic_create_sysfs_entries(adapter);
+
+	adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
+	return 0;
+
+err_out_free_rxbuf:
+	qlcnic_release_rx_buffers(adapter);
+	qlcnic_free_hw_resources(adapter);
+err_out_free_sw:
+	qlcnic_free_sw_resources(adapter);
+	return err;
+}
+
+static void
+qlcnic_detach(struct qlcnic_adapter *adapter)
+{
+	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+		return;
+
+	qlcnic_remove_sysfs_entries(adapter);
+
+	qlcnic_free_hw_resources(adapter);
+	qlcnic_release_rx_buffers(adapter);
+	qlcnic_free_irq(adapter);
+	qlcnic_napi_del(adapter);
+	qlcnic_free_sw_resources(adapter);
+
+	adapter->is_up = 0;
+}
+
+int
+qlcnic_reset_context(struct qlcnic_adapter *adapter)
+{
+	int err = 0;
+	struct net_device *netdev = adapter->netdev;
+
+	if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+		return -EBUSY;
+
+	if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
+
+		netif_device_detach(netdev);
+
+		if (netif_running(netdev))
+			__qlcnic_down(adapter, netdev);
+
+		qlcnic_detach(adapter);
+
+		if (netif_running(netdev)) {
+			err = qlcnic_attach(adapter);
+			if (!err)
+				err = __qlcnic_up(adapter, netdev);
+
+			if (err)
+				goto done;
+		}
+
+		netif_device_attach(netdev);
+	}
+
+done:
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+	return err;
+}
+
+static int
+qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
+		struct net_device *netdev)
+{
+	int err;
+	struct pci_dev *pdev = adapter->pdev;
+
+	adapter->rx_csum = 1;
+	adapter->mc_enabled = 0;
+	adapter->max_mc_count = 38;
+
+	netdev->netdev_ops	   = &qlcnic_netdev_ops;
+	netdev->watchdog_timeo     = 2*HZ;
+
+	qlcnic_change_mtu(netdev, netdev->mtu);
+
+	SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
+
+	netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
+	netdev->features |= (NETIF_F_GRO);
+	netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
+
+	netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
+	netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
+
+	if (adapter->pci_using_dac) {
+		netdev->features |= NETIF_F_HIGHDMA;
+		netdev->vlan_features |= NETIF_F_HIGHDMA;
+	}
+
+	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
+		netdev->features |= (NETIF_F_HW_VLAN_TX);
+
+	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
+		netdev->features |= NETIF_F_LRO;
+
+	netdev->irq = adapter->msix_entries[0].vector;
+
+	INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
+
+	if (qlcnic_read_mac_addr(adapter))
+		dev_warn(&pdev->dev, "failed to read mac addr\n");
+
+	netif_carrier_off(netdev);
+	netif_stop_queue(netdev);
+
+	err = register_netdev(netdev);
+	if (err) {
+		dev_err(&pdev->dev, "failed to register net device\n");
+		return err;
+	}
+
+	return 0;
+}
+
+static int __devinit
+qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *netdev = NULL;
+	struct qlcnic_adapter *adapter = NULL;
+	int err;
+	int pci_func_id = PCI_FUNC(pdev->devfn);
+	uint8_t revision_id;
+
+	err = pci_enable_device(pdev);
+	if (err)
+		return err;
+
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+		err = -ENODEV;
+		goto err_out_disable_pdev;
+	}
+
+	err = pci_request_regions(pdev, qlcnic_driver_name);
+	if (err)
+		goto err_out_disable_pdev;
+
+	pci_set_master(pdev);
+
+	netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
+	if (!netdev) {
+		dev_err(&pdev->dev, "failed to allocate net_device\n");
+		err = -ENOMEM;
+		goto err_out_free_res;
+	}
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
+	adapter = netdev_priv(netdev);
+	adapter->netdev  = netdev;
+	adapter->pdev    = pdev;
+	adapter->ahw.pci_func  = pci_func_id;
+
+	revision_id = pdev->revision;
+	adapter->ahw.revision_id = revision_id;
+
+	rwlock_init(&adapter->ahw.crb_lock);
+	mutex_init(&adapter->ahw.mem_lock);
+
+	spin_lock_init(&adapter->tx_clean_lock);
+	INIT_LIST_HEAD(&adapter->mac_list);
+
+	err = qlcnic_setup_pci_map(adapter);
+	if (err)
+		goto err_out_free_netdev;
+
+	/* This will be reset for mezz cards  */
+	adapter->portnum = pci_func_id;
+
+	err = qlcnic_get_board_info(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "Error getting board config info.\n");
+		goto err_out_iounmap;
+	}
+
+
+	err = qlcnic_start_firmware(adapter);
+	if (err)
+		goto err_out_decr_ref;
+
+	/*
+	 * See if the firmware gave us a virtual-physical port mapping.
+	 */
+	adapter->physical_port = adapter->portnum;
+
+	qlcnic_clear_stats(adapter);
+
+	qlcnic_setup_intr(adapter);
+
+	err = qlcnic_setup_netdev(adapter, netdev);
+	if (err)
+		goto err_out_disable_msi;
+
+	pci_set_drvdata(pdev, adapter);
+
+	qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+
+	switch (adapter->ahw.port_type) {
+	case QLCNIC_GBE:
+		dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
+				adapter->netdev->name);
+		break;
+	case QLCNIC_XGBE:
+		dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
+				adapter->netdev->name);
+		break;
+	}
+
+	qlcnic_create_diag_entries(adapter);
+
+	return 0;
+
+err_out_disable_msi:
+	qlcnic_teardown_intr(adapter);
+
+err_out_decr_ref:
+	qlcnic_clr_all_drv_state(adapter);
+
+err_out_iounmap:
+	qlcnic_cleanup_pci_map(adapter);
+
+err_out_free_netdev:
+	free_netdev(netdev);
+
+err_out_free_res:
+	pci_release_regions(pdev);
+
+err_out_disable_pdev:
+	pci_set_drvdata(pdev, NULL);
+	pci_disable_device(pdev);
+	return err;
+}
+
+static void __devexit qlcnic_remove(struct pci_dev *pdev)
+{
+	struct qlcnic_adapter *adapter;
+	struct net_device *netdev;
+
+	adapter = pci_get_drvdata(pdev);
+	if (adapter == NULL)
+		return;
+
+	netdev = adapter->netdev;
+
+	qlcnic_cancel_fw_work(adapter);
+
+	unregister_netdev(netdev);
+
+	cancel_work_sync(&adapter->tx_timeout_task);
+
+	qlcnic_detach(adapter);
+
+	qlcnic_clr_all_drv_state(adapter);
+
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+
+	qlcnic_teardown_intr(adapter);
+
+	qlcnic_remove_diag_entries(adapter);
+
+	qlcnic_cleanup_pci_map(adapter);
+
+	qlcnic_release_firmware(adapter);
+
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+
+	free_netdev(netdev);
+}
+static int __qlcnic_shutdown(struct pci_dev *pdev)
+{
+	struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev = adapter->netdev;
+	int retval;
+
+	netif_device_detach(netdev);
+
+	qlcnic_cancel_fw_work(adapter);
+
+	if (netif_running(netdev))
+		qlcnic_down(adapter, netdev);
+
+	cancel_work_sync(&adapter->tx_timeout_task);
+
+	qlcnic_detach(adapter);
+
+	qlcnic_clr_all_drv_state(adapter);
+
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+
+	retval = pci_save_state(pdev);
+	if (retval)
+		return retval;
+
+	if (qlcnic_wol_supported(adapter)) {
+		pci_enable_wake(pdev, PCI_D3cold, 1);
+		pci_enable_wake(pdev, PCI_D3hot, 1);
+	}
+
+	return 0;
+}
+
+static void qlcnic_shutdown(struct pci_dev *pdev)
+{
+	if (__qlcnic_shutdown(pdev))
+		return;
+
+	pci_disable_device(pdev);
+}
+
+#ifdef CONFIG_PM
+static int
+qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	int retval;
+
+	retval = __qlcnic_shutdown(pdev);
+	if (retval)
+		return retval;
+
+	pci_set_power_state(pdev, pci_choose_state(pdev, state));
+	return 0;
+}
+
+static int
+qlcnic_resume(struct pci_dev *pdev)
+{
+	struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev = adapter->netdev;
+	int err;
+
+	err = pci_enable_device(pdev);
+	if (err)
+		return err;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_set_master(pdev);
+	pci_restore_state(pdev);
+
+	adapter->ahw.crb_win = -1;
+	adapter->ahw.ocm_win = -1;
+
+	err = qlcnic_start_firmware(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "failed to start firmware\n");
+		return err;
+	}
+
+	if (netif_running(netdev)) {
+		err = qlcnic_attach(adapter);
+		if (err)
+			goto err_out;
+
+		err = qlcnic_up(adapter, netdev);
+		if (err)
+			goto err_out_detach;
+
+
+		qlcnic_config_indev_addr(netdev, NETDEV_UP);
+	}
+
+	netif_device_attach(netdev);
+	qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+	return 0;
+
+err_out_detach:
+	qlcnic_detach(adapter);
+err_out:
+	qlcnic_clr_all_drv_state(adapter);
+	return err;
+}
+#endif
+
+static int qlcnic_open(struct net_device *netdev)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	int err;
+
+	if (adapter->driver_mismatch)
+		return -EIO;
+
+	err = qlcnic_attach(adapter);
+	if (err)
+		return err;
+
+	err = __qlcnic_up(adapter, netdev);
+	if (err)
+		goto err_out;
+
+	netif_start_queue(netdev);
+
+	return 0;
+
+err_out:
+	qlcnic_detach(adapter);
+	return err;
+}
+
+/*
+ * qlcnic_close - Disables a network interface entry point
+ */
+static int qlcnic_close(struct net_device *netdev)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+
+	__qlcnic_down(adapter, netdev);
+	return 0;
+}
+
+static void
+qlcnic_tso_check(struct net_device *netdev,
+		struct qlcnic_host_tx_ring *tx_ring,
+		struct cmd_desc_type0 *first_desc,
+		struct sk_buff *skb)
+{
+	u8 opcode = TX_ETHER_PKT;
+	__be16 protocol = skb->protocol;
+	u16 flags = 0, vid = 0;
+	u32 producer;
+	int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
+	struct cmd_desc_type0 *hwdesc;
+	struct vlan_ethhdr *vh;
+
+	if (protocol == cpu_to_be16(ETH_P_8021Q)) {
+
+		vh = (struct vlan_ethhdr *)skb->data;
+		protocol = vh->h_vlan_encapsulated_proto;
+		flags = FLAGS_VLAN_TAGGED;
+
+	} else if (vlan_tx_tag_present(skb)) {
+
+		flags = FLAGS_VLAN_OOB;
+		vid = vlan_tx_tag_get(skb);
+		qlcnic_set_tx_vlan_tci(first_desc, vid);
+		vlan_oob = 1;
+	}
+
+	if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
+			skb_shinfo(skb)->gso_size > 0) {
+
+		hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+
+		first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
+		first_desc->total_hdr_length = hdr_len;
+		if (vlan_oob) {
+			first_desc->total_hdr_length += VLAN_HLEN;
+			first_desc->tcp_hdr_offset = VLAN_HLEN;
+			first_desc->ip_hdr_offset = VLAN_HLEN;
+			/* Only in case of TSO on vlan device */
+			flags |= FLAGS_VLAN_TAGGED;
+		}
+
+		opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
+				TX_TCP_LSO6 : TX_TCP_LSO;
+		tso = 1;
+
+	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		u8 l4proto;
+
+		if (protocol == cpu_to_be16(ETH_P_IP)) {
+			l4proto = ip_hdr(skb)->protocol;
+
+			if (l4proto == IPPROTO_TCP)
+				opcode = TX_TCP_PKT;
+			else if (l4proto == IPPROTO_UDP)
+				opcode = TX_UDP_PKT;
+		} else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
+			l4proto = ipv6_hdr(skb)->nexthdr;
+
+			if (l4proto == IPPROTO_TCP)
+				opcode = TX_TCPV6_PKT;
+			else if (l4proto == IPPROTO_UDP)
+				opcode = TX_UDPV6_PKT;
+		}
+	}
+
+	first_desc->tcp_hdr_offset += skb_transport_offset(skb);
+	first_desc->ip_hdr_offset += skb_network_offset(skb);
+	qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
+
+	if (!tso)
+		return;
+
+	/* For LSO, we need to copy the MAC/IP/TCP headers into
+	 * the descriptor ring
+	 */
+	producer = tx_ring->producer;
+	copied = 0;
+	offset = 2;
+
+	if (vlan_oob) {
+		/* Create a TSO vlan header template for firmware */
+
+		hwdesc = &tx_ring->desc_head[producer];
+		tx_ring->cmd_buf_arr[producer].skb = NULL;
+
+		copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
+				hdr_len + VLAN_HLEN);
+
+		vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
+		skb_copy_from_linear_data(skb, vh, 12);
+		vh->h_vlan_proto = htons(ETH_P_8021Q);
+		vh->h_vlan_TCI = htons(vid);
+		skb_copy_from_linear_data_offset(skb, 12,
+				(char *)vh + 16, copy_len - 16);
+
+		copied = copy_len - VLAN_HLEN;
+		offset = 0;
+
+		producer = get_next_index(producer, tx_ring->num_desc);
+	}
+
+	while (copied < hdr_len) {
+
+		copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
+				(hdr_len - copied));
+
+		hwdesc = &tx_ring->desc_head[producer];
+		tx_ring->cmd_buf_arr[producer].skb = NULL;
+
+		skb_copy_from_linear_data_offset(skb, copied,
+				 (char *)hwdesc + offset, copy_len);
+
+		copied += copy_len;
+		offset = 0;
+
+		producer = get_next_index(producer, tx_ring->num_desc);
+	}
+
+	tx_ring->producer = producer;
+	barrier();
+}
+
+static int
+qlcnic_map_tx_skb(struct pci_dev *pdev,
+		struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
+{
+	struct qlcnic_skb_frag *nf;
+	struct skb_frag_struct *frag;
+	int i, nr_frags;
+	dma_addr_t map;
+
+	nr_frags = skb_shinfo(skb)->nr_frags;
+	nf = &pbuf->frag_array[0];
+
+	map = pci_map_single(pdev, skb->data,
+			skb_headlen(skb), PCI_DMA_TODEVICE);
+	if (pci_dma_mapping_error(pdev, map))
+		goto out_err;
+
+	nf->dma = map;
+	nf->length = skb_headlen(skb);
+
+	for (i = 0; i < nr_frags; i++) {
+		frag = &skb_shinfo(skb)->frags[i];
+		nf = &pbuf->frag_array[i+1];
+
+		map = pci_map_page(pdev, frag->page, frag->page_offset,
+				frag->size, PCI_DMA_TODEVICE);
+		if (pci_dma_mapping_error(pdev, map))
+			goto unwind;
+
+		nf->dma = map;
+		nf->length = frag->size;
+	}
+
+	return 0;
+
+unwind:
+	while (--i >= 0) {
+		nf = &pbuf->frag_array[i+1];
+		pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
+	}
+
+	nf = &pbuf->frag_array[0];
+	pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
+
+out_err:
+	return -ENOMEM;
+}
+
+static inline void
+qlcnic_clear_cmddesc(u64 *desc)
+{
+	desc[0] = 0ULL;
+	desc[2] = 0ULL;
+}
+
+static netdev_tx_t
+qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
+	struct qlcnic_cmd_buffer *pbuf;
+	struct qlcnic_skb_frag *buffrag;
+	struct cmd_desc_type0 *hwdesc, *first_desc;
+	struct pci_dev *pdev;
+	int i, k;
+
+	u32 producer;
+	int frag_count, no_of_desc;
+	u32 num_txd = tx_ring->num_desc;
+
+	frag_count = skb_shinfo(skb)->nr_frags + 1;
+
+	/* 4 fragments per cmd des */
+	no_of_desc = (frag_count + 3) >> 2;
+
+	if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
+		netif_stop_queue(netdev);
+		return NETDEV_TX_BUSY;
+	}
+
+	producer = tx_ring->producer;
+	pbuf = &tx_ring->cmd_buf_arr[producer];
+
+	pdev = adapter->pdev;
+
+	if (qlcnic_map_tx_skb(pdev, skb, pbuf))
+		goto drop_packet;
+
+	pbuf->skb = skb;
+	pbuf->frag_count = frag_count;
+
+	first_desc = hwdesc = &tx_ring->desc_head[producer];
+	qlcnic_clear_cmddesc((u64 *)hwdesc);
+
+	qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
+	qlcnic_set_tx_port(first_desc, adapter->portnum);
+
+	for (i = 0; i < frag_count; i++) {
+
+		k = i % 4;
+
+		if ((k == 0) && (i > 0)) {
+			/* move to next desc.*/
+			producer = get_next_index(producer, num_txd);
+			hwdesc = &tx_ring->desc_head[producer];
+			qlcnic_clear_cmddesc((u64 *)hwdesc);
+			tx_ring->cmd_buf_arr[producer].skb = NULL;
+		}
+
+		buffrag = &pbuf->frag_array[i];
+
+		hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
+		switch (k) {
+		case 0:
+			hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
+			break;
+		case 1:
+			hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
+			break;
+		case 2:
+			hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
+			break;
+		case 3:
+			hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
+			break;
+		}
+	}
+
+	tx_ring->producer = get_next_index(producer, num_txd);
+
+	qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
+
+	qlcnic_update_cmd_producer(adapter, tx_ring);
+
+	adapter->stats.txbytes += skb->len;
+	adapter->stats.xmitcalled++;
+
+	return NETDEV_TX_OK;
+
+drop_packet:
+	adapter->stats.txdropped++;
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	u32 temp, temp_state, temp_val;
+	int rv = 0;
+
+	temp = QLCRD32(adapter, CRB_TEMP_STATE);
+
+	temp_state = qlcnic_get_temp_state(temp);
+	temp_val = qlcnic_get_temp_val(temp);
+
+	if (temp_state == QLCNIC_TEMP_PANIC) {
+		dev_err(&netdev->dev,
+		       "Device temperature %d degrees C exceeds"
+		       " maximum allowed. Hardware has been shut down.\n",
+		       temp_val);
+		rv = 1;
+	} else if (temp_state == QLCNIC_TEMP_WARN) {
+		if (adapter->temp == QLCNIC_TEMP_NORMAL) {
+			dev_err(&netdev->dev,
+			       "Device temperature %d degrees C "
+			       "exceeds operating range."
+			       " Immediate action needed.\n",
+			       temp_val);
+		}
+	} else {
+		if (adapter->temp == QLCNIC_TEMP_WARN) {
+			dev_info(&netdev->dev,
+			       "Device temperature is now %d degrees C"
+			       " in normal range.\n", temp_val);
+		}
+	}
+	adapter->temp = temp_state;
+	return rv;
+}
+
+void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	if (adapter->ahw.linkup && !linkup) {
+		dev_info(&netdev->dev, "NIC Link is down\n");
+		adapter->ahw.linkup = 0;
+		if (netif_running(netdev)) {
+			netif_carrier_off(netdev);
+			netif_stop_queue(netdev);
+		}
+	} else if (!adapter->ahw.linkup && linkup) {
+		dev_info(&netdev->dev, "NIC Link is up\n");
+		adapter->ahw.linkup = 1;
+		if (netif_running(netdev)) {
+			netif_carrier_on(netdev);
+			netif_wake_queue(netdev);
+		}
+	}
+}
+
+static void qlcnic_tx_timeout(struct net_device *netdev)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+
+	if (test_bit(__QLCNIC_RESETTING, &adapter->state))
+		return;
+
+	dev_err(&netdev->dev, "transmit timeout, resetting.\n");
+	schedule_work(&adapter->tx_timeout_task);
+}
+
+static void qlcnic_tx_timeout_task(struct work_struct *work)
+{
+	struct qlcnic_adapter *adapter =
+		container_of(work, struct qlcnic_adapter, tx_timeout_task);
+
+	if (!netif_running(adapter->netdev))
+		return;
+
+	if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+		return;
+
+	if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
+		goto request_reset;
+
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+	if (!qlcnic_reset_context(adapter)) {
+		adapter->netdev->trans_start = jiffies;
+		return;
+
+		/* context reset failed, fall through for fw reset */
+	}
+
+request_reset:
+	adapter->need_fw_reset = 1;
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+}
+
+static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	struct net_device_stats *stats = &netdev->stats;
+
+	memset(stats, 0, sizeof(*stats));
+
+	stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
+	stats->tx_packets = adapter->stats.xmitfinished;
+	stats->rx_bytes = adapter->stats.rxbytes;
+	stats->tx_bytes = adapter->stats.txbytes;
+	stats->rx_dropped = adapter->stats.rxdropped;
+	stats->tx_dropped = adapter->stats.txdropped;
+
+	return stats;
+}
+
+static irqreturn_t qlcnic_intr(int irq, void *data)
+{
+	struct qlcnic_host_sds_ring *sds_ring = data;
+	struct qlcnic_adapter *adapter = sds_ring->adapter;
+	u32 status;
+
+	status = readl(adapter->isr_int_vec);
+
+	if (!(status & adapter->int_vec_bit))
+		return IRQ_NONE;
+
+	/* check interrupt state machine, to be sure */
+	status = readl(adapter->crb_int_state_reg);
+	if (!ISR_LEGACY_INT_TRIGGERED(status))
+		return IRQ_NONE;
+
+	writel(0xffffffff, adapter->tgt_status_reg);
+	/* read twice to ensure write is flushed */
+	readl(adapter->isr_int_vec);
+	readl(adapter->isr_int_vec);
+
+	napi_schedule(&sds_ring->napi);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t qlcnic_msi_intr(int irq, void *data)
+{
+	struct qlcnic_host_sds_ring *sds_ring = data;
+	struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+	/* clear interrupt */
+	writel(0xffffffff, adapter->tgt_status_reg);
+
+	napi_schedule(&sds_ring->napi);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t qlcnic_msix_intr(int irq, void *data)
+{
+	struct qlcnic_host_sds_ring *sds_ring = data;
+
+	napi_schedule(&sds_ring->napi);
+	return IRQ_HANDLED;
+}
+
+static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
+{
+	u32 sw_consumer, hw_consumer;
+	int count = 0, i;
+	struct qlcnic_cmd_buffer *buffer;
+	struct pci_dev *pdev = adapter->pdev;
+	struct net_device *netdev = adapter->netdev;
+	struct qlcnic_skb_frag *frag;
+	int done;
+	struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
+
+	if (!spin_trylock(&adapter->tx_clean_lock))
+		return 1;
+
+	sw_consumer = tx_ring->sw_consumer;
+	hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
+
+	while (sw_consumer != hw_consumer) {
+		buffer = &tx_ring->cmd_buf_arr[sw_consumer];
+		if (buffer->skb) {
+			frag = &buffer->frag_array[0];
+			pci_unmap_single(pdev, frag->dma, frag->length,
+					 PCI_DMA_TODEVICE);
+			frag->dma = 0ULL;
+			for (i = 1; i < buffer->frag_count; i++) {
+				frag++;
+				pci_unmap_page(pdev, frag->dma, frag->length,
+					       PCI_DMA_TODEVICE);
+				frag->dma = 0ULL;
+			}
+
+			adapter->stats.xmitfinished++;
+			dev_kfree_skb_any(buffer->skb);
+			buffer->skb = NULL;
+		}
+
+		sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
+		if (++count >= MAX_STATUS_HANDLE)
+			break;
+	}
+
+	if (count && netif_running(netdev)) {
+		tx_ring->sw_consumer = sw_consumer;
+
+		smp_mb();
+
+		if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
+			__netif_tx_lock(tx_ring->txq, smp_processor_id());
+			if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
+				netif_wake_queue(netdev);
+				adapter->tx_timeo_cnt = 0;
+			}
+			__netif_tx_unlock(tx_ring->txq);
+		}
+	}
+	/*
+	 * If everything is freed up to consumer then check if the ring is full
+	 * If the ring is full then check if more needs to be freed and
+	 * schedule the call back again.
+	 *
+	 * This happens when there are 2 CPUs. One could be freeing and the
+	 * other filling it. If the ring is full when we get out of here and
+	 * the card has already interrupted the host then the host can miss the
+	 * interrupt.
+	 *
+	 * There is still a possible race condition and the host could miss an
+	 * interrupt. The card has to take care of this.
+	 */
+	hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
+	done = (sw_consumer == hw_consumer);
+	spin_unlock(&adapter->tx_clean_lock);
+
+	return done;
+}
+
+static int qlcnic_poll(struct napi_struct *napi, int budget)
+{
+	struct qlcnic_host_sds_ring *sds_ring =
+		container_of(napi, struct qlcnic_host_sds_ring, napi);
+
+	struct qlcnic_adapter *adapter = sds_ring->adapter;
+
+	int tx_complete;
+	int work_done;
+
+	tx_complete = qlcnic_process_cmd_ring(adapter);
+
+	work_done = qlcnic_process_rcv_ring(sds_ring, budget);
+
+	if ((work_done < budget) && tx_complete) {
+		napi_complete(&sds_ring->napi);
+		if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
+			qlcnic_enable_int(sds_ring);
+	}
+
+	return work_done;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void qlcnic_poll_controller(struct net_device *netdev)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	disable_irq(adapter->irq);
+	qlcnic_intr(adapter->irq, adapter);
+	enable_irq(adapter->irq);
+}
+#endif
+
+static void
+qlcnic_set_drv_state(struct qlcnic_adapter *adapter, int state)
+{
+	u32  val;
+
+	WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
+			state != QLCNIC_DEV_NEED_QUISCENT);
+
+	if (qlcnic_api_lock(adapter))
+		return ;
+
+	val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+
+	if (state == QLCNIC_DEV_NEED_RESET)
+		val |= ((u32)0x1 << (adapter->portnum * 4));
+	else if (state == QLCNIC_DEV_NEED_QUISCENT)
+		val |= ((u32)0x1 << ((adapter->portnum * 4) + 1));
+
+	QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+
+	qlcnic_api_unlock(adapter);
+}
+
+static void
+qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
+{
+	u32  val;
+
+	if (qlcnic_api_lock(adapter))
+		goto err;
+
+	val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
+	val &= ~((u32)0x1 << (adapter->portnum * 4));
+	QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
+
+	if (!(val & 0x11111111))
+		QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
+
+	val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+	val &= ~((u32)0x3 << (adapter->portnum * 4));
+	QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+
+	qlcnic_api_unlock(adapter);
+err:
+	adapter->fw_fail_cnt = 0;
+	clear_bit(__QLCNIC_START_FW, &adapter->state);
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+}
+
+static int
+qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
+{
+	int act, state;
+
+	state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+	act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
+
+	if (((state & 0x11111111) == (act & 0x11111111)) ||
+			((act & 0x11111111) == ((state >> 1) & 0x11111111)))
+		return 0;
+	else
+		return 1;
+}
+
+static int
+qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
+{
+	u32 val, prev_state;
+	int cnt = 0;
+	int portnum = adapter->portnum;
+
+	if (qlcnic_api_lock(adapter))
+		return -1;
+
+	val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
+	if (!(val & ((int)0x1 << (portnum * 4)))) {
+		val |= ((u32)0x1 << (portnum * 4));
+		QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
+	} else if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state)) {
+		goto start_fw;
+	}
+
+	prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+
+	switch (prev_state) {
+	case QLCNIC_DEV_COLD:
+start_fw:
+		QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITALIZING);
+		qlcnic_api_unlock(adapter);
+		return 1;
+
+	case QLCNIC_DEV_READY:
+		qlcnic_api_unlock(adapter);
+		return 0;
+
+	case QLCNIC_DEV_NEED_RESET:
+		val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+		val |= ((u32)0x1 << (portnum * 4));
+		QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+		break;
+
+	case QLCNIC_DEV_NEED_QUISCENT:
+		val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+		val |= ((u32)0x1 << ((portnum * 4) + 1));
+		QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+		break;
+
+	case QLCNIC_DEV_FAILED:
+		qlcnic_api_unlock(adapter);
+		return -1;
+	}
+
+	qlcnic_api_unlock(adapter);
+	msleep(1000);
+	while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY) &&
+			++cnt < 20)
+		msleep(1000);
+
+	if (cnt >= 20)
+		return -1;
+
+	if (qlcnic_api_lock(adapter))
+		return -1;
+
+	val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
+	val &= ~((u32)0x3 << (portnum * 4));
+	QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
+
+	qlcnic_api_unlock(adapter);
+
+	return 0;
+}
+
+static void
+qlcnic_fwinit_work(struct work_struct *work)
+{
+	struct qlcnic_adapter *adapter = container_of(work,
+			struct qlcnic_adapter, fw_work.work);
+	int dev_state;
+
+	if (++adapter->fw_wait_cnt > FW_POLL_THRESH)
+		goto err_ret;
+
+	if (test_bit(__QLCNIC_START_FW, &adapter->state)) {
+
+		if (qlcnic_check_drv_state(adapter)) {
+			qlcnic_schedule_work(adapter,
+					qlcnic_fwinit_work, FW_POLL_DELAY);
+			return;
+		}
+
+		if (!qlcnic_start_firmware(adapter)) {
+			qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
+			return;
+		}
+
+		goto err_ret;
+	}
+
+	dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+	switch (dev_state) {
+	case QLCNIC_DEV_READY:
+		if (!qlcnic_start_firmware(adapter)) {
+			qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
+			return;
+		}
+	case QLCNIC_DEV_FAILED:
+		break;
+
+	default:
+		qlcnic_schedule_work(adapter,
+			qlcnic_fwinit_work, 2 * FW_POLL_DELAY);
+		return;
+	}
+
+err_ret:
+	qlcnic_clr_all_drv_state(adapter);
+}
+
+static void
+qlcnic_detach_work(struct work_struct *work)
+{
+	struct qlcnic_adapter *adapter = container_of(work,
+			struct qlcnic_adapter, fw_work.work);
+	struct net_device *netdev = adapter->netdev;
+	u32 status;
+
+	netif_device_detach(netdev);
+
+	qlcnic_down(adapter, netdev);
+
+	qlcnic_detach(adapter);
+
+	status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
+
+	if (status & QLCNIC_RCODE_FATAL_ERROR)
+		goto err_ret;
+
+	if (adapter->temp == QLCNIC_TEMP_PANIC)
+		goto err_ret;
+
+	qlcnic_set_drv_state(adapter, adapter->dev_state);
+
+	adapter->fw_wait_cnt = 0;
+
+	qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
+
+	return;
+
+err_ret:
+	qlcnic_clr_all_drv_state(adapter);
+
+}
+
+static void
+qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
+{
+	u32 state;
+
+	if (qlcnic_api_lock(adapter))
+		return;
+
+	state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+
+	if (state != QLCNIC_DEV_INITALIZING && state != QLCNIC_DEV_NEED_RESET) {
+		QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
+		set_bit(__QLCNIC_START_FW, &adapter->state);
+	}
+
+	qlcnic_api_unlock(adapter);
+}
+
+static void
+qlcnic_schedule_work(struct qlcnic_adapter *adapter,
+		work_func_t func, int delay)
+{
+	INIT_DELAYED_WORK(&adapter->fw_work, func);
+	schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
+}
+
+static void
+qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
+{
+	while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+		msleep(10);
+
+	cancel_delayed_work_sync(&adapter->fw_work);
+}
+
+static void
+qlcnic_attach_work(struct work_struct *work)
+{
+	struct qlcnic_adapter *adapter = container_of(work,
+				struct qlcnic_adapter, fw_work.work);
+	struct net_device *netdev = adapter->netdev;
+	int err;
+
+	if (netif_running(netdev)) {
+		err = qlcnic_attach(adapter);
+		if (err)
+			goto done;
+
+		err = qlcnic_up(adapter, netdev);
+		if (err) {
+			qlcnic_detach(adapter);
+			goto done;
+		}
+
+		qlcnic_config_indev_addr(netdev, NETDEV_UP);
+	}
+
+	netif_device_attach(netdev);
+
+done:
+	adapter->fw_fail_cnt = 0;
+	clear_bit(__QLCNIC_RESETTING, &adapter->state);
+	qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+}
+
+static int
+qlcnic_check_health(struct qlcnic_adapter *adapter)
+{
+	u32 state = 0, heartbit;
+	struct net_device *netdev = adapter->netdev;
+
+	if (qlcnic_check_temp(adapter))
+		goto detach;
+
+	if (adapter->need_fw_reset) {
+		qlcnic_dev_request_reset(adapter);
+		goto detach;
+	}
+
+	state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+	if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
+		adapter->need_fw_reset = 1;
+
+	heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
+	if (heartbit != adapter->heartbit) {
+		adapter->heartbit = heartbit;
+		adapter->fw_fail_cnt = 0;
+		if (adapter->need_fw_reset)
+			goto detach;
+		return 0;
+	}
+
+	if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
+		return 0;
+
+	qlcnic_dev_request_reset(adapter);
+
+	clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
+
+	dev_info(&netdev->dev, "firmware hang detected\n");
+
+detach:
+	adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
+		QLCNIC_DEV_NEED_RESET;
+
+	if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
+			!test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+		qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
+
+	return 1;
+}
+
+static void
+qlcnic_fw_poll_work(struct work_struct *work)
+{
+	struct qlcnic_adapter *adapter = container_of(work,
+				struct qlcnic_adapter, fw_work.work);
+
+	if (test_bit(__QLCNIC_RESETTING, &adapter->state))
+		goto reschedule;
+
+
+	if (qlcnic_check_health(adapter))
+		return;
+
+reschedule:
+	qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
+}
+
+static ssize_t
+qlcnic_store_bridged_mode(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t len)
+{
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	unsigned long new;
+	int ret = -EINVAL;
+
+	if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
+		goto err_out;
+
+	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+		goto err_out;
+
+	if (strict_strtoul(buf, 2, &new))
+		goto err_out;
+
+	if (!qlcnic_config_bridged_mode(adapter, !!new))
+		ret = len;
+
+err_out:
+	return ret;
+}
+
+static ssize_t
+qlcnic_show_bridged_mode(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	int bridged_mode = 0;
+
+	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
+		bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
+
+	return sprintf(buf, "%d\n", bridged_mode);
+}
+
+static struct device_attribute dev_attr_bridged_mode = {
+       .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
+       .show = qlcnic_show_bridged_mode,
+       .store = qlcnic_store_bridged_mode,
+};
+
+static ssize_t
+qlcnic_store_diag_mode(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t len)
+{
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	unsigned long new;
+
+	if (strict_strtoul(buf, 2, &new))
+		return -EINVAL;
+
+	if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
+		adapter->flags ^= QLCNIC_DIAG_ENABLED;
+
+	return len;
+}
+
+static ssize_t
+qlcnic_show_diag_mode(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%d\n",
+			!!(adapter->flags & QLCNIC_DIAG_ENABLED));
+}
+
+static struct device_attribute dev_attr_diag_mode = {
+	.attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
+	.show = qlcnic_show_diag_mode,
+	.store = qlcnic_store_diag_mode,
+};
+
+static int
+qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
+		loff_t offset, size_t size)
+{
+	if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
+		return -EIO;
+
+	if ((size != 4) || (offset & 0x3))
+		return  -EINVAL;
+
+	if (offset < QLCNIC_PCI_CRBSPACE)
+		return -EINVAL;
+
+	return 0;
+}
+
+static ssize_t
+qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
+		char *buf, loff_t offset, size_t size)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	u32 data;
+	int ret;
+
+	ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
+	if (ret != 0)
+		return ret;
+
+	data = QLCRD32(adapter, offset);
+	memcpy(buf, &data, size);
+	return size;
+}
+
+static ssize_t
+qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
+		char *buf, loff_t offset, size_t size)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	u32 data;
+	int ret;
+
+	ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
+	if (ret != 0)
+		return ret;
+
+	memcpy(&data, buf, size);
+	QLCWR32(adapter, offset, data);
+	return size;
+}
+
+static int
+qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
+		loff_t offset, size_t size)
+{
+	if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
+		return -EIO;
+
+	if ((size != 8) || (offset & 0x7))
+		return  -EIO;
+
+	return 0;
+}
+
+static ssize_t
+qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
+		char *buf, loff_t offset, size_t size)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	u64 data;
+	int ret;
+
+	ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
+	if (ret != 0)
+		return ret;
+
+	if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
+		return -EIO;
+
+	memcpy(buf, &data, size);
+
+	return size;
+}
+
+static ssize_t
+qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr,
+		char *buf, loff_t offset, size_t size)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+	u64 data;
+	int ret;
+
+	ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
+	if (ret != 0)
+		return ret;
+
+	memcpy(&data, buf, size);
+
+	if (qlcnic_pci_mem_write_2M(adapter, offset, data))
+		return -EIO;
+
+	return size;
+}
+
+
+static struct bin_attribute bin_attr_crb = {
+	.attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
+	.size = 0,
+	.read = qlcnic_sysfs_read_crb,
+	.write = qlcnic_sysfs_write_crb,
+};
+
+static struct bin_attribute bin_attr_mem = {
+	.attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
+	.size = 0,
+	.read = qlcnic_sysfs_read_mem,
+	.write = qlcnic_sysfs_write_mem,
+};
+
+static void
+qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
+{
+	struct device *dev = &adapter->pdev->dev;
+
+	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
+		if (device_create_file(dev, &dev_attr_bridged_mode))
+			dev_warn(dev,
+				"failed to create bridged_mode sysfs entry\n");
+}
+
+static void
+qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
+{
+	struct device *dev = &adapter->pdev->dev;
+
+	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
+		device_remove_file(dev, &dev_attr_bridged_mode);
+}
+
+static void
+qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
+{
+	struct device *dev = &adapter->pdev->dev;
+
+	if (device_create_file(dev, &dev_attr_diag_mode))
+		dev_info(dev, "failed to create diag_mode sysfs entry\n");
+	if (device_create_bin_file(dev, &bin_attr_crb))
+		dev_info(dev, "failed to create crb sysfs entry\n");
+	if (device_create_bin_file(dev, &bin_attr_mem))
+		dev_info(dev, "failed to create mem sysfs entry\n");
+}
+
+
+static void
+qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
+{
+	struct device *dev = &adapter->pdev->dev;
+
+	device_remove_file(dev, &dev_attr_diag_mode);
+	device_remove_bin_file(dev, &bin_attr_crb);
+	device_remove_bin_file(dev, &bin_attr_mem);
+}
+
+#ifdef CONFIG_INET
+
+#define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
+
+static int
+qlcnic_destip_supported(struct qlcnic_adapter *adapter)
+{
+	if (adapter->ahw.cut_through)
+		return 0;
+
+	return 1;
+}
+
+static void
+qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
+{
+	struct in_device *indev;
+	struct qlcnic_adapter *adapter = netdev_priv(dev);
+
+	if (!qlcnic_destip_supported(adapter))
+		return;
+
+	indev = in_dev_get(dev);
+	if (!indev)
+		return;
+
+	for_ifa(indev) {
+		switch (event) {
+		case NETDEV_UP:
+			qlcnic_config_ipaddr(adapter,
+					ifa->ifa_address, QLCNIC_IP_UP);
+			break;
+		case NETDEV_DOWN:
+			qlcnic_config_ipaddr(adapter,
+					ifa->ifa_address, QLCNIC_IP_DOWN);
+			break;
+		default:
+			break;
+		}
+	} endfor_ifa(indev);
+
+	in_dev_put(indev);
+	return;
+}
+
+static int qlcnic_netdev_event(struct notifier_block *this,
+				 unsigned long event, void *ptr)
+{
+	struct qlcnic_adapter *adapter;
+	struct net_device *dev = (struct net_device *)ptr;
+
+recheck:
+	if (dev == NULL)
+		goto done;
+
+	if (dev->priv_flags & IFF_802_1Q_VLAN) {
+		dev = vlan_dev_real_dev(dev);
+		goto recheck;
+	}
+
+	if (!is_qlcnic_netdev(dev))
+		goto done;
+
+	adapter = netdev_priv(dev);
+
+	if (!adapter)
+		goto done;
+
+	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+		goto done;
+
+	qlcnic_config_indev_addr(dev, event);
+done:
+	return NOTIFY_DONE;
+}
+
+static int
+qlcnic_inetaddr_event(struct notifier_block *this,
+		unsigned long event, void *ptr)
+{
+	struct qlcnic_adapter *adapter;
+	struct net_device *dev;
+
+	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
+
+	dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
+
+recheck:
+	if (dev == NULL || !netif_running(dev))
+		goto done;
+
+	if (dev->priv_flags & IFF_802_1Q_VLAN) {
+		dev = vlan_dev_real_dev(dev);
+		goto recheck;
+	}
+
+	if (!is_qlcnic_netdev(dev))
+		goto done;
+
+	adapter = netdev_priv(dev);
+
+	if (!adapter || !qlcnic_destip_supported(adapter))
+		goto done;
+
+	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+		goto done;
+
+	switch (event) {
+	case NETDEV_UP:
+		qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
+		break;
+	case NETDEV_DOWN:
+		qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
+		break;
+	default:
+		break;
+	}
+
+done:
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block	qlcnic_netdev_cb = {
+	.notifier_call = qlcnic_netdev_event,
+};
+
+static struct notifier_block qlcnic_inetaddr_cb = {
+	.notifier_call = qlcnic_inetaddr_event,
+};
+#else
+static void
+qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
+{ }
+#endif
+
+static struct pci_driver qlcnic_driver = {
+	.name = qlcnic_driver_name,
+	.id_table = qlcnic_pci_tbl,
+	.probe = qlcnic_probe,
+	.remove = __devexit_p(qlcnic_remove),
+#ifdef CONFIG_PM
+	.suspend = qlcnic_suspend,
+	.resume = qlcnic_resume,
+#endif
+	.shutdown = qlcnic_shutdown
+};
+
+static int __init qlcnic_init_module(void)
+{
+
+	printk(KERN_INFO "%s\n", qlcnic_driver_string);
+
+#ifdef CONFIG_INET
+	register_netdevice_notifier(&qlcnic_netdev_cb);
+	register_inetaddr_notifier(&qlcnic_inetaddr_cb);
+#endif
+
+
+	return pci_register_driver(&qlcnic_driver);
+}
+
+module_init(qlcnic_init_module);
+
+static void __exit qlcnic_exit_module(void)
+{
+
+	pci_unregister_driver(&qlcnic_driver);
+
+#ifdef CONFIG_INET
+	unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
+	unregister_netdevice_notifier(&qlcnic_netdev_cb);
+#endif
+}
+
+module_exit(qlcnic_exit_module);