/*
 * QLogic qlcnic NIC Driver
 * Copyright (c)  2009-2010 QLogic Corporation
 *
 * See LICENSE.qlcnic for copyright and licensing details.
 */

#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/interrupt.h>

#include "qlcnic.h"

#include <linux/swab.h>
#include <linux/dma-mapping.h>
#include <net/ip.h>
#include <linux/ipv6.h>
#include <linux/inetdevice.h>
#include <linux/sysfs.h>
#include <linux/aer.h>
#include <linux/log2.h>

MODULE_DESCRIPTION("QLogic 1/10 GbE Converged/Intelligent 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 1/10 GbE "
	"Converged/Intelligent Ethernet Driver v" QLCNIC_LINUX_VERSIONID;

static struct workqueue_struct *qlcnic_wq;
static int qlcnic_mac_learn;
module_param(qlcnic_mac_learn, int, 0444);
MODULE_PARM_DESC(qlcnic_mac_learn, "Mac Filter (0=disabled, 1=enabled)");

static int use_msi = 1;
module_param(use_msi, int, 0444);
MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");

static int use_msi_x = 1;
module_param(use_msi_x, int, 0444);
MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");

static int auto_fw_reset = 1;
module_param(auto_fw_reset, int, 0644);
MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");

static int load_fw_file;
module_param(load_fw_file, int, 0444);
MODULE_PARM_DESC(load_fw_file, "Load firmware from (0=flash, 1=file");

static int qlcnic_config_npars;
module_param(qlcnic_config_npars, int, 0444);
MODULE_PARM_DESC(qlcnic_config_npars, "Configure NPARs (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 void qlcnic_tx_timeout(struct net_device *netdev);
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);
static int qlcnic_rx_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_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding);
static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter, u8);
static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);

static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
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_restore_indev_addr(struct net_device *dev, unsigned long);
static int qlcnic_start_firmware(struct qlcnic_adapter *);

static void qlcnic_alloc_lb_filters_mem(struct qlcnic_adapter *adapter);
static void qlcnic_free_lb_filters_mem(struct qlcnic_adapter *adapter);
static void qlcnic_dev_set_npar_ready(struct qlcnic_adapter *);
static int qlcnicvf_config_led(struct qlcnic_adapter *, u32, u32);
static int qlcnicvf_config_bridged_mode(struct qlcnic_adapter *, u32);
static int qlcnicvf_start_firmware(struct qlcnic_adapter *);
static void qlcnic_set_netdev_features(struct qlcnic_adapter *,
				struct qlcnic_esw_func_cfg *);
static void qlcnic_vlan_rx_add(struct net_device *, u16);
static void qlcnic_vlan_rx_del(struct net_device *, u16);

/*  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 DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
	ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
	{0,}
};

MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);


inline 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);
}

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];

		if (ring == adapter->max_sds_rings - 1)
			netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
				QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
		else
			netif_napi_add(netdev, &sds_ring->napi,
				qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
	}

	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;

	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
		return;

	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;

	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
		return;

	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));
}

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)
{
	u8 mac_addr[ETH_ALEN];
	struct net_device *netdev = adapter->netdev;
	struct pci_dev *pdev = adapter->pdev;

	if (qlcnic_get_mac_address(adapter, mac_addr) != 0)
		return -EIO;

	memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
	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 ((adapter->flags & QLCNIC_MAC_OVERRIDE_DISABLED))
		return -EOPNOTSUPP;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EINVAL;

	if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
		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 (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
		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_fix_features  = qlcnic_fix_features,
	.ndo_set_features  = qlcnic_set_features,
	.ndo_tx_timeout	   = qlcnic_tx_timeout,
	.ndo_vlan_rx_add_vid	= qlcnic_vlan_rx_add,
	.ndo_vlan_rx_kill_vid	= qlcnic_vlan_rx_del,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller = qlcnic_poll_controller,
#endif
};

static struct qlcnic_nic_template qlcnic_ops = {
	.config_bridged_mode = qlcnic_config_bridged_mode,
	.config_led = qlcnic_config_led,
	.start_firmware = qlcnic_start_firmware
};

static struct qlcnic_nic_template qlcnic_vf_ops = {
	.config_bridged_mode = qlcnicvf_config_bridged_mode,
	.config_led = qlcnicvf_config_led,
	.start_firmware = qlcnicvf_start_firmware
};

static int qlcnic_enable_msix(struct qlcnic_adapter *adapter, u32 num_msix)
{
	struct pci_dev *pdev = adapter->pdev;
	int err = -1;

	adapter->max_sds_rings = 1;
	adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
	qlcnic_set_msix_bit(pdev, 0);

	if (adapter->msix_supported) {
 enable_msix:
		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);

			adapter->max_sds_rings = num_msix;

			dev_info(&pdev->dev, "using msi-x interrupts\n");
			return err;
		}
		if (err > 0) {
			num_msix = rounddown_pow_of_two(err);
			if (num_msix)
				goto enable_msix;
		}
	}
	return err;
}


static void qlcnic_enable_msi_legacy(struct qlcnic_adapter *adapter)
{
	const struct qlcnic_legacy_intr_set *legacy_intrp;
	struct pci_dev *pdev = adapter->pdev;

	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;
	}

	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);
	dev_info(&pdev->dev, "using legacy interrupts\n");
	adapter->msix_entries[0].vector = pdev->irq;
}

static void
qlcnic_setup_intr(struct qlcnic_adapter *adapter)
{
	int num_msix;

	if (adapter->msix_supported) {
		num_msix = (num_online_cpus() >=
			QLCNIC_DEF_NUM_STS_DESC_RINGS) ?
			QLCNIC_DEF_NUM_STS_DESC_RINGS :
			QLCNIC_MIN_NUM_RSS_RINGS;
	} else
		num_msix = 1;

	if (!qlcnic_enable_msix(adapter, num_msix))
		return;

	qlcnic_enable_msi_legacy(adapter);
}

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_init_pci_info(struct qlcnic_adapter *adapter)
{
	struct qlcnic_pci_info *pci_info;
	int i, ret = 0;
	u8 pfn;

	pci_info = kcalloc(QLCNIC_MAX_PCI_FUNC, sizeof(*pci_info), GFP_KERNEL);
	if (!pci_info)
		return -ENOMEM;

	adapter->npars = kzalloc(sizeof(struct qlcnic_npar_info) *
				QLCNIC_MAX_PCI_FUNC, GFP_KERNEL);
	if (!adapter->npars) {
		ret = -ENOMEM;
		goto err_pci_info;
	}

	adapter->eswitch = kzalloc(sizeof(struct qlcnic_eswitch) *
				QLCNIC_NIU_MAX_XG_PORTS, GFP_KERNEL);
	if (!adapter->eswitch) {
		ret = -ENOMEM;
		goto err_npars;
	}

	ret = qlcnic_get_pci_info(adapter, pci_info);
	if (ret)
		goto err_eswitch;

	for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
		pfn = pci_info[i].id;
		if (pfn > QLCNIC_MAX_PCI_FUNC) {
			ret = QL_STATUS_INVALID_PARAM;
			goto err_eswitch;
		}
		adapter->npars[pfn].active = (u8)pci_info[i].active;
		adapter->npars[pfn].type = (u8)pci_info[i].type;
		adapter->npars[pfn].phy_port = (u8)pci_info[i].default_port;
		adapter->npars[pfn].min_bw = pci_info[i].tx_min_bw;
		adapter->npars[pfn].max_bw = pci_info[i].tx_max_bw;
	}

	for (i = 0; i < QLCNIC_NIU_MAX_XG_PORTS; i++)
		adapter->eswitch[i].flags |= QLCNIC_SWITCH_ENABLE;

	kfree(pci_info);
	return 0;

err_eswitch:
	kfree(adapter->eswitch);
	adapter->eswitch = NULL;
err_npars:
	kfree(adapter->npars);
	adapter->npars = NULL;
err_pci_info:
	kfree(pci_info);

	return ret;
}

static int
qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
{
	u8 id;
	u32 ref_count;
	int i, ret = 1;
	u32 data = QLCNIC_MGMT_FUNC;
	void __iomem *priv_op = adapter->ahw->pci_base0 + QLCNIC_DRV_OP_MODE;

	/* If other drivers are not in use set their privilege level */
	ref_count = QLCRD32(adapter, QLCNIC_CRB_DRV_ACTIVE);
	ret = qlcnic_api_lock(adapter);
	if (ret)
		goto err_lock;

	if (qlcnic_config_npars) {
		for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
			id = i;
			if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
				id == adapter->ahw->pci_func)
				continue;
			data |= (qlcnic_config_npars &
					QLC_DEV_SET_DRV(0xf, id));
		}
	} else {
		data = readl(priv_op);
		data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw->pci_func)) |
			(QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
			adapter->ahw->pci_func));
	}
	writel(data, priv_op);
	qlcnic_api_unlock(adapter);
err_lock:
	return ret;
}

static void
qlcnic_check_vf(struct qlcnic_adapter *adapter)
{
	void __iomem *msix_base_addr;
	void __iomem *priv_op;
	u32 func;
	u32 msix_base;
	u32 op_mode, priv_level;

	/* Determine FW API version */
	adapter->fw_hal_version = readl(adapter->ahw->pci_base0 +
					QLCNIC_FW_API);

	/* Find PCI function number */
	pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
	msix_base_addr = adapter->ahw->pci_base0 + QLCNIC_MSIX_BASE;
	msix_base = readl(msix_base_addr);
	func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
	adapter->ahw->pci_func = func;

	/* Determine function privilege level */
	priv_op = adapter->ahw->pci_base0 + QLCNIC_DRV_OP_MODE;
	op_mode = readl(priv_op);
	if (op_mode == QLC_DEV_DRV_DEFAULT)
		priv_level = QLCNIC_MGMT_FUNC;
	else
		priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw->pci_func);

	if (priv_level == QLCNIC_NON_PRIV_FUNC) {
		adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
		dev_info(&adapter->pdev->dev,
			"HAL Version: %d Non Privileged function\n",
			adapter->fw_hal_version);
		adapter->nic_ops = &qlcnic_vf_ops;
	} else
		adapter->nic_ops = &qlcnic_ops;
}

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;

	/* 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;

	qlcnic_check_vf(adapter);

	adapter->ahw->ocm_win_crb = qlcnic_get_ioaddr(adapter,
		QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(
			adapter->ahw->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) {
				sprintf(name, "%pM: %s" ,
					adapter->mac_addr,
					qlcnic_boards[i].short_name);
				found = 1;
				break;
		}

	}

	if (!found)
		sprintf(name, "%pM Gigabit Ethernet", adapter->mac_addr);
}

static void
qlcnic_check_options(struct qlcnic_adapter *adapter)
{
	u32 fw_major, fw_minor, fw_build;
	struct pci_dev *pdev = adapter->pdev;

	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);

	dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
			fw_major, fw_minor, fw_build);
	if (adapter->ahw->port_type == QLCNIC_XGBE) {
		if (adapter->flags & QLCNIC_ESWITCH_ENABLED) {
			adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_VF;
			adapter->max_rxd = MAX_RCV_DESCRIPTORS_VF;
		} else {
			adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
			adapter->max_rxd = MAX_RCV_DESCRIPTORS_10G;
		}

		adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
		adapter->max_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->max_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
		adapter->max_rxd = MAX_RCV_DESCRIPTORS_1G;
	}

	adapter->msix_supported = !!use_msi_x;

	adapter->num_txd = MAX_CMD_DESCRIPTORS;

	adapter->max_rds_rings = MAX_RDS_RINGS;
}

static int
qlcnic_initialize_nic(struct qlcnic_adapter *adapter)
{
	int err;
	struct qlcnic_info nic_info;

	err = qlcnic_get_nic_info(adapter, &nic_info, adapter->ahw->pci_func);
	if (err)
		return err;

	adapter->physical_port = (u8)nic_info.phys_port;
	adapter->switch_mode = nic_info.switch_mode;
	adapter->max_tx_ques = nic_info.max_tx_ques;
	adapter->max_rx_ques = nic_info.max_rx_ques;
	adapter->capabilities = nic_info.capabilities;
	adapter->max_mac_filters = nic_info.max_mac_filters;
	adapter->max_mtu = nic_info.max_mtu;

	if (adapter->capabilities & BIT_6)
		adapter->flags |= QLCNIC_ESWITCH_ENABLED;
	else
		adapter->flags &= ~QLCNIC_ESWITCH_ENABLED;

	return err;
}

static void
qlcnic_set_vlan_config(struct qlcnic_adapter *adapter,
		struct qlcnic_esw_func_cfg *esw_cfg)
{
	if (esw_cfg->discard_tagged)
		adapter->flags &= ~QLCNIC_TAGGING_ENABLED;
	else
		adapter->flags |= QLCNIC_TAGGING_ENABLED;

	if (esw_cfg->vlan_id)
		adapter->pvid = esw_cfg->vlan_id;
	else
		adapter->pvid = 0;
}

static void
qlcnic_vlan_rx_add(struct net_device *netdev, u16 vid)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	set_bit(vid, adapter->vlans);
}

static void
qlcnic_vlan_rx_del(struct net_device *netdev, u16 vid)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	qlcnic_restore_indev_addr(netdev, NETDEV_DOWN);
	clear_bit(vid, adapter->vlans);
}

static void
qlcnic_set_eswitch_port_features(struct qlcnic_adapter *adapter,
		struct qlcnic_esw_func_cfg *esw_cfg)
{
	adapter->flags &= ~(QLCNIC_MACSPOOF | QLCNIC_MAC_OVERRIDE_DISABLED |
				QLCNIC_PROMISC_DISABLED);

	if (esw_cfg->mac_anti_spoof)
		adapter->flags |= QLCNIC_MACSPOOF;

	if (!esw_cfg->mac_override)
		adapter->flags |= QLCNIC_MAC_OVERRIDE_DISABLED;

	if (!esw_cfg->promisc_mode)
		adapter->flags |= QLCNIC_PROMISC_DISABLED;

	qlcnic_set_netdev_features(adapter, esw_cfg);
}

static int
qlcnic_set_eswitch_port_config(struct qlcnic_adapter *adapter)
{
	struct qlcnic_esw_func_cfg esw_cfg;

	if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED))
		return 0;

	esw_cfg.pci_func = adapter->ahw->pci_func;
	if (qlcnic_get_eswitch_port_config(adapter, &esw_cfg))
			return -EIO;
	qlcnic_set_vlan_config(adapter, &esw_cfg);
	qlcnic_set_eswitch_port_features(adapter, &esw_cfg);

	return 0;
}

static void
qlcnic_set_netdev_features(struct qlcnic_adapter *adapter,
		struct qlcnic_esw_func_cfg *esw_cfg)
{
	struct net_device *netdev = adapter->netdev;
	unsigned long features, vlan_features;

	features = (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
			NETIF_F_IPV6_CSUM | NETIF_F_GRO);
	vlan_features = (NETIF_F_SG | NETIF_F_IP_CSUM |
			NETIF_F_IPV6_CSUM | NETIF_F_HW_VLAN_FILTER);

	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_TSO) {
		features |= (NETIF_F_TSO | NETIF_F_TSO6);
		vlan_features |= (NETIF_F_TSO | NETIF_F_TSO6);
	}

	if (netdev->features & NETIF_F_LRO)
		features |= NETIF_F_LRO;

	if (esw_cfg->offload_flags & BIT_0) {
		netdev->features |= features;
		if (!(esw_cfg->offload_flags & BIT_1))
			netdev->features &= ~NETIF_F_TSO;
		if (!(esw_cfg->offload_flags & BIT_2))
			netdev->features &= ~NETIF_F_TSO6;
	} else {
		netdev->features &= ~features;
	}

	netdev->vlan_features = (features & vlan_features);
}

static int
qlcnic_check_eswitch_mode(struct qlcnic_adapter *adapter)
{
	void __iomem *priv_op;
	u32 op_mode, priv_level;
	int err = 0;

	err = qlcnic_initialize_nic(adapter);
	if (err)
		return err;

	if (adapter->flags & QLCNIC_ADAPTER_INITIALIZED)
		return 0;

	priv_op = adapter->ahw->pci_base0 + QLCNIC_DRV_OP_MODE;
	op_mode = readl(priv_op);
	priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw->pci_func);

	if (op_mode == QLC_DEV_DRV_DEFAULT)
		priv_level = QLCNIC_MGMT_FUNC;
	else
		priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw->pci_func);

	if (adapter->flags & QLCNIC_ESWITCH_ENABLED) {
		if (priv_level == QLCNIC_MGMT_FUNC) {
			adapter->op_mode = QLCNIC_MGMT_FUNC;
			err = qlcnic_init_pci_info(adapter);
			if (err)
				return err;
			/* Set privilege level for other functions */
			qlcnic_set_function_modes(adapter);
			dev_info(&adapter->pdev->dev,
				"HAL Version: %d, Management function\n",
				adapter->fw_hal_version);
		} else if (priv_level == QLCNIC_PRIV_FUNC) {
			adapter->op_mode = QLCNIC_PRIV_FUNC;
			dev_info(&adapter->pdev->dev,
				"HAL Version: %d, Privileged function\n",
				adapter->fw_hal_version);
		}
	}

	adapter->flags |= QLCNIC_ADAPTER_INITIALIZED;

	return err;
}

static int
qlcnic_set_default_offload_settings(struct qlcnic_adapter *adapter)
{
	struct qlcnic_esw_func_cfg esw_cfg;
	struct qlcnic_npar_info *npar;
	u8 i;

	if (adapter->need_fw_reset)
		return 0;

	for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
		if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
			continue;
		memset(&esw_cfg, 0, sizeof(struct qlcnic_esw_func_cfg));
		esw_cfg.pci_func = i;
		esw_cfg.offload_flags = BIT_0;
		esw_cfg.mac_override = BIT_0;
		esw_cfg.promisc_mode = BIT_0;
		if (adapter->capabilities  & QLCNIC_FW_CAPABILITY_TSO)
			esw_cfg.offload_flags |= (BIT_1 | BIT_2);
		if (qlcnic_config_switch_port(adapter, &esw_cfg))
			return -EIO;
		npar = &adapter->npars[i];
		npar->pvid = esw_cfg.vlan_id;
		npar->mac_override = esw_cfg.mac_override;
		npar->mac_anti_spoof = esw_cfg.mac_anti_spoof;
		npar->discard_tagged = esw_cfg.discard_tagged;
		npar->promisc_mode = esw_cfg.promisc_mode;
		npar->offload_flags = esw_cfg.offload_flags;
	}

	return 0;
}

static int
qlcnic_reset_eswitch_config(struct qlcnic_adapter *adapter,
			struct qlcnic_npar_info *npar, int pci_func)
{
	struct qlcnic_esw_func_cfg esw_cfg;
	esw_cfg.op_mode = QLCNIC_PORT_DEFAULTS;
	esw_cfg.pci_func = pci_func;
	esw_cfg.vlan_id = npar->pvid;
	esw_cfg.mac_override = npar->mac_override;
	esw_cfg.discard_tagged = npar->discard_tagged;
	esw_cfg.mac_anti_spoof = npar->mac_anti_spoof;
	esw_cfg.offload_flags = npar->offload_flags;
	esw_cfg.promisc_mode = npar->promisc_mode;
	if (qlcnic_config_switch_port(adapter, &esw_cfg))
		return -EIO;

	esw_cfg.op_mode = QLCNIC_ADD_VLAN;
	if (qlcnic_config_switch_port(adapter, &esw_cfg))
		return -EIO;

	return 0;
}

static int
qlcnic_reset_npar_config(struct qlcnic_adapter *adapter)
{
	int i, err;
	struct qlcnic_npar_info *npar;
	struct qlcnic_info nic_info;

	if (!adapter->need_fw_reset)
		return 0;

	/* Set the NPAR config data after FW reset */
	for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
		npar = &adapter->npars[i];
		if (npar->type != QLCNIC_TYPE_NIC)
			continue;
		err = qlcnic_get_nic_info(adapter, &nic_info, i);
		if (err)
			return err;
		nic_info.min_tx_bw = npar->min_bw;
		nic_info.max_tx_bw = npar->max_bw;
		err = qlcnic_set_nic_info(adapter, &nic_info);
		if (err)
			return err;

		if (npar->enable_pm) {
			err = qlcnic_config_port_mirroring(adapter,
							npar->dest_npar, 1, i);
			if (err)
				return err;
		}
		err = qlcnic_reset_eswitch_config(adapter, npar, i);
		if (err)
			return err;
	}
	return 0;
}

static int qlcnic_check_npar_opertional(struct qlcnic_adapter *adapter)
{
	u8 npar_opt_timeo = QLCNIC_DEV_NPAR_OPER_TIMEO;
	u32 npar_state;

	if (adapter->op_mode == QLCNIC_MGMT_FUNC)
		return 0;

	npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
	while (npar_state != QLCNIC_DEV_NPAR_OPER && --npar_opt_timeo) {
		msleep(1000);
		npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
	}
	if (!npar_opt_timeo) {
		dev_err(&adapter->pdev->dev,
			"Waiting for NPAR state to opertional timeout\n");
		return -EIO;
	}
	return 0;
}

static int
qlcnic_set_mgmt_operations(struct qlcnic_adapter *adapter)
{
	int err;

	if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
		    adapter->op_mode != QLCNIC_MGMT_FUNC)
		return 0;

	err = qlcnic_set_default_offload_settings(adapter);
	if (err)
		return err;

	err = qlcnic_reset_npar_config(adapter);
	if (err)
		return err;

	qlcnic_dev_set_npar_ready(adapter);

	return err;
}

static int
qlcnic_start_firmware(struct qlcnic_adapter *adapter)
{
	int err;

	err = qlcnic_can_start_firmware(adapter);
	if (err < 0)
		return err;
	else if (!err)
		goto check_fw_status;

	if (load_fw_file)
		qlcnic_request_firmware(adapter);
	else {
		err = qlcnic_check_flash_fw_ver(adapter);
		if (err)
			goto err_out;

		adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
	}

	err = qlcnic_need_fw_reset(adapter);
	if (err == 0)
		goto check_fw_status;

	err = qlcnic_pinit_from_rom(adapter);
	if (err)
		goto err_out;

	err = qlcnic_load_firmware(adapter);
	if (err)
		goto err_out;

	qlcnic_release_firmware(adapter);
	QLCWR32(adapter, CRB_DRIVER_VERSION, QLCNIC_DRIVER_VERSION);

check_fw_status:
	err = qlcnic_check_fw_status(adapter);
	if (err)
		goto err_out;

	QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
	qlcnic_idc_debug_info(adapter, 1);

	err = qlcnic_check_eswitch_mode(adapter);
	if (err) {
		dev_err(&adapter->pdev->dev,
			"Memory allocation failed for eswitch\n");
		goto err_out;
	}
	err = qlcnic_set_mgmt_operations(adapter);
	if (err)
		goto err_out;

	qlcnic_check_options(adapter);
	adapter->need_fw_reset = 0;

	qlcnic_release_firmware(adapter);
	return 0;

err_out:
	QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
	dev_err(&adapter->pdev->dev, "Device state set to failed\n");

	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->diag_test == QLCNIC_INTERRUPT_TEST) {
		handler = qlcnic_tmp_intr;
		if (!QLCNIC_IS_MSI_FAMILY(adapter))
			flags |= IRQF_SHARED;

	} else {
		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 int
__qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
{
	int ring;
	struct qlcnic_host_rds_ring *rds_ring;

	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
		return -EIO;

	if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
		return 0;
	if (qlcnic_set_eswitch_port_config(adapter))
		return -EIO;

	if (qlcnic_fw_create_ctx(adapter))
		return -EIO;

	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		rds_ring = &adapter->recv_ctx->rds_rings[ring];
		qlcnic_post_rx_buffers(adapter, rds_ring);
	}

	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 (netdev->features & NETIF_F_LRO)
		qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);

	qlcnic_napi_enable(adapter);

	qlcnic_linkevent_request(adapter, 1);

	adapter->reset_context = 0;
	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);

	if (adapter->fhash.fnum)
		qlcnic_delete_lb_filters(adapter);

	qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);

	qlcnic_napi_disable(adapter);

	qlcnic_fw_destroy_ctx(adapter);

	qlcnic_reset_rx_buffers_list(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;

	if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
		return 0;

	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");
		goto err_out_napi_del;
	}

	err = qlcnic_alloc_hw_resources(adapter);
	if (err) {
		dev_err(&pdev->dev, "Error in setting hw resources\n");
		goto err_out_free_sw;
	}

	err = qlcnic_request_irq(adapter);
	if (err) {
		dev_err(&pdev->dev, "failed to setup interrupt\n");
		goto err_out_free_hw;
	}

	qlcnic_create_sysfs_entries(adapter);

	adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
	return 0;

err_out_free_hw:
	qlcnic_free_hw_resources(adapter);
err_out_free_sw:
	qlcnic_free_sw_resources(adapter);
err_out_napi_del:
	qlcnic_napi_del(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;
}

void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	struct qlcnic_host_sds_ring *sds_ring;
	int ring;

	clear_bit(__QLCNIC_DEV_UP, &adapter->state);
	if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
		for (ring = 0; ring < adapter->max_sds_rings; ring++) {
			sds_ring = &adapter->recv_ctx->sds_rings[ring];
			qlcnic_disable_int(sds_ring);
		}
	}

	qlcnic_fw_destroy_ctx(adapter);

	qlcnic_detach(adapter);

	adapter->diag_test = 0;
	adapter->max_sds_rings = max_sds_rings;

	if (qlcnic_attach(adapter))
		goto out;

	if (netif_running(netdev))
		__qlcnic_up(adapter, netdev);
out:
	netif_device_attach(netdev);
}

static int qlcnic_alloc_adapter_resources(struct qlcnic_adapter *adapter)
{
	int err = 0;
	adapter->ahw = kzalloc(sizeof(struct qlcnic_hardware_context),
				GFP_KERNEL);
	if (!adapter->ahw) {
		dev_err(&adapter->pdev->dev,
			"Failed to allocate recv ctx resources for adapter\n");
		err = -ENOMEM;
		goto err_out;
	}
	adapter->recv_ctx = kzalloc(sizeof(struct qlcnic_recv_context),
				GFP_KERNEL);
	if (!adapter->recv_ctx) {
		dev_err(&adapter->pdev->dev,
			"Failed to allocate recv ctx resources for adapter\n");
		kfree(adapter->ahw);
		adapter->ahw = NULL;
		err = -ENOMEM;
		goto err_out;
	}
	/* Initialize interrupt coalesce parameters */
	adapter->ahw->coal.flag = QLCNIC_INTR_DEFAULT;
	adapter->ahw->coal.rx_time_us = QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
	adapter->ahw->coal.rx_packets = QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
err_out:
	return err;
}

static void qlcnic_free_adapter_resources(struct qlcnic_adapter *adapter)
{
	kfree(adapter->recv_ctx);
	adapter->recv_ctx = NULL;

	if (adapter->ahw->fw_dump.tmpl_hdr) {
		vfree(adapter->ahw->fw_dump.tmpl_hdr);
		adapter->ahw->fw_dump.tmpl_hdr = NULL;
	}
	kfree(adapter->ahw);
	adapter->ahw = NULL;
}

int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	struct qlcnic_host_sds_ring *sds_ring;
	struct qlcnic_host_rds_ring *rds_ring;
	int ring;
	int ret;

	netif_device_detach(netdev);

	if (netif_running(netdev))
		__qlcnic_down(adapter, netdev);

	qlcnic_detach(adapter);

	adapter->max_sds_rings = 1;
	adapter->diag_test = test;

	ret = qlcnic_attach(adapter);
	if (ret) {
		netif_device_attach(netdev);
		return ret;
	}

	ret = qlcnic_fw_create_ctx(adapter);
	if (ret) {
		qlcnic_detach(adapter);
		netif_device_attach(netdev);
		return ret;
	}

	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		rds_ring = &adapter->recv_ctx->rds_rings[ring];
		qlcnic_post_rx_buffers(adapter, rds_ring);
	}

	if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
		for (ring = 0; ring < adapter->max_sds_rings; ring++) {
			sds_ring = &adapter->recv_ctx->sds_rings[ring];
			qlcnic_enable_int(sds_ring);
		}
	}
	set_bit(__QLCNIC_DEV_UP, &adapter->state);

	return 0;
}

/* Reset context in hardware only */
static int
qlcnic_reset_hw_context(struct qlcnic_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;

	if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
		return -EBUSY;

	netif_device_detach(netdev);

	qlcnic_down(adapter, netdev);

	qlcnic_up(adapter, netdev);

	netif_device_attach(netdev);

	clear_bit(__QLCNIC_RESETTING, &adapter->state);
	return 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)
				__qlcnic_up(adapter, netdev);
		}

		netif_device_attach(netdev);
	}

	clear_bit(__QLCNIC_RESETTING, &adapter->state);
	return err;
}

static int
qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
		struct net_device *netdev, u8 pci_using_dac)
{
	int err;
	struct pci_dev *pdev = adapter->pdev;

	adapter->mc_enabled = 0;
	adapter->max_mc_count = 38;

	netdev->netdev_ops	   = &qlcnic_netdev_ops;
	netdev->watchdog_timeo     = 5*HZ;

	qlcnic_change_mtu(netdev, netdev->mtu);

	SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);

	netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
		NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;

	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_TSO)
		netdev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
	if (pci_using_dac)
		netdev->hw_features |= NETIF_F_HIGHDMA;

	netdev->vlan_features = netdev->hw_features;

	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
		netdev->hw_features |= NETIF_F_HW_VLAN_TX;
	if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
		netdev->hw_features |= NETIF_F_LRO;

	netdev->features |= netdev->hw_features |
		NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER;

	netdev->irq = adapter->msix_entries[0].vector;

	netif_carrier_off(netdev);

	err = register_netdev(netdev);
	if (err) {
		dev_err(&pdev->dev, "failed to register net device\n");
		return err;
	}

	return 0;
}

static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
{
	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
			!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
		*pci_using_dac = 1;
	else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
			!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
		*pci_using_dac = 0;
	else {
		dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
		return -EIO;
	}

	return 0;
}

static int
qlcnic_alloc_msix_entries(struct qlcnic_adapter *adapter, u16 count)
{
	adapter->msix_entries = kcalloc(count, sizeof(struct msix_entry),
					GFP_KERNEL);

	if (adapter->msix_entries)
		return 0;

	dev_err(&adapter->pdev->dev, "failed allocating msix_entries\n");
	return -ENOMEM;
}

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;
	uint8_t revision_id;
	uint8_t pci_using_dac;
	char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];

	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 = qlcnic_set_dma_mask(pdev, &pci_using_dac);
	if (err)
		goto err_out_disable_pdev;

	err = pci_request_regions(pdev, qlcnic_driver_name);
	if (err)
		goto err_out_disable_pdev;

	pci_set_master(pdev);
	pci_enable_pcie_error_reporting(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;

	if (qlcnic_alloc_adapter_resources(adapter))
		goto err_out_free_netdev;

	adapter->dev_rst_time = jiffies;
	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_hw;

	/* This will be reset for mezz cards  */
	adapter->portnum = adapter->ahw->pci_func;

	/* Get FW dump template and store it */
	if (adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
		qlcnic_fw_cmd_get_minidump_temp(adapter);

	err = qlcnic_get_board_info(adapter);
	if (err) {
		dev_err(&pdev->dev, "Error getting board config info.\n");
		goto err_out_iounmap;
	}

	err = qlcnic_setup_idc_param(adapter);
	if (err)
		goto err_out_iounmap;

	adapter->flags |= QLCNIC_NEED_FLR;

	err = adapter->nic_ops->start_firmware(adapter);
	if (err) {
		dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
		goto err_out_decr_ref;
	}

	if (qlcnic_read_mac_addr(adapter))
		dev_warn(&pdev->dev, "failed to read mac addr\n");

	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);
	}

	qlcnic_clear_stats(adapter);

	err = qlcnic_alloc_msix_entries(adapter, adapter->max_rx_ques);
	if (err)
		goto err_out_decr_ref;

	qlcnic_setup_intr(adapter);

	err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
	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_alloc_lb_filters_mem(adapter);
	qlcnic_create_diag_entries(adapter);

	return 0;

err_out_disable_msi:
	qlcnic_teardown_intr(adapter);
	kfree(adapter->msix_entries);

err_out_decr_ref:
	qlcnic_clr_all_drv_state(adapter, 0);

err_out_iounmap:
	qlcnic_cleanup_pci_map(adapter);

err_out_free_hw:
	qlcnic_free_adapter_resources(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);

	qlcnic_detach(adapter);

	if (adapter->npars != NULL)
		kfree(adapter->npars);
	if (adapter->eswitch != NULL)
		kfree(adapter->eswitch);

	qlcnic_clr_all_drv_state(adapter, 0);

	clear_bit(__QLCNIC_RESETTING, &adapter->state);

	qlcnic_free_lb_filters_mem(adapter);

	qlcnic_teardown_intr(adapter);
	kfree(adapter->msix_entries);

	qlcnic_remove_diag_entries(adapter);

	qlcnic_cleanup_pci_map(adapter);

	qlcnic_release_firmware(adapter);

	pci_disable_pcie_error_reporting(pdev);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	pci_set_drvdata(pdev, NULL);

	qlcnic_free_adapter_resources(adapter);
	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);

	qlcnic_clr_all_drv_state(adapter, 0);

	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);

	err = adapter->nic_ops->start_firmware(adapter);
	if (err) {
		dev_err(&pdev->dev, "failed to start firmware\n");
		return err;
	}

	if (netif_running(netdev)) {
		err = qlcnic_up(adapter, netdev);
		if (err)
			goto done;

		qlcnic_restore_indev_addr(netdev, NETDEV_UP);
	}
done:
	netif_device_attach(netdev);
	qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
	return 0;
}
#endif

static int qlcnic_open(struct net_device *netdev)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	int err;

	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_alloc_lb_filters_mem(struct qlcnic_adapter *adapter)
{
	void *head;
	int i;

	if (!qlcnic_mac_learn)
		return;

	spin_lock_init(&adapter->mac_learn_lock);

	head = kcalloc(QLCNIC_LB_MAX_FILTERS, sizeof(struct hlist_head),
								GFP_KERNEL);
	if (!head)
		return;

	adapter->fhash.fmax = QLCNIC_LB_MAX_FILTERS;
	adapter->fhash.fhead = (struct hlist_head *)head;

	for (i = 0; i < adapter->fhash.fmax; i++)
		INIT_HLIST_HEAD(&adapter->fhash.fhead[i]);
}

static void qlcnic_free_lb_filters_mem(struct qlcnic_adapter *adapter)
{
	if (adapter->fhash.fmax && adapter->fhash.fhead)
		kfree(adapter->fhash.fhead);

	adapter->fhash.fhead = NULL;
	adapter->fhash.fmax = 0;
}

static void qlcnic_change_filter(struct qlcnic_adapter *adapter,
		u64 uaddr, __le16 vlan_id, struct qlcnic_host_tx_ring *tx_ring)
{
	struct cmd_desc_type0 *hwdesc;
	struct qlcnic_nic_req *req;
	struct qlcnic_mac_req *mac_req;
	struct qlcnic_vlan_req *vlan_req;
	u32 producer;
	u64 word;

	producer = tx_ring->producer;
	hwdesc = &tx_ring->desc_head[tx_ring->producer];

	req = (struct qlcnic_nic_req *)hwdesc;
	memset(req, 0, sizeof(struct qlcnic_nic_req));
	req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);

	word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
	req->req_hdr = cpu_to_le64(word);

	mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
	mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
	memcpy(mac_req->mac_addr, &uaddr, ETH_ALEN);

	vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
	vlan_req->vlan_id = vlan_id;

	tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
	smp_mb();
}

#define QLCNIC_MAC_HASH(MAC)\
	((((MAC) & 0x70000) >> 0x10) | (((MAC) & 0x70000000000ULL) >> 0x25))

static void
qlcnic_send_filter(struct qlcnic_adapter *adapter,
		struct qlcnic_host_tx_ring *tx_ring,
		struct cmd_desc_type0 *first_desc,
		struct sk_buff *skb)
{
	struct ethhdr *phdr = (struct ethhdr *)(skb->data);
	struct qlcnic_filter *fil, *tmp_fil;
	struct hlist_node *tmp_hnode, *n;
	struct hlist_head *head;
	u64 src_addr = 0;
	__le16 vlan_id = 0;
	u8 hindex;

	if (!compare_ether_addr(phdr->h_source, adapter->mac_addr))
		return;

	if (adapter->fhash.fnum >= adapter->fhash.fmax)
		return;

	/* Only NPAR capable devices support vlan based learning*/
	if (adapter->flags & QLCNIC_ESWITCH_ENABLED)
		vlan_id = first_desc->vlan_TCI;
	memcpy(&src_addr, phdr->h_source, ETH_ALEN);
	hindex = QLCNIC_MAC_HASH(src_addr) & (QLCNIC_LB_MAX_FILTERS - 1);
	head = &(adapter->fhash.fhead[hindex]);

	hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
		if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
			    tmp_fil->vlan_id == vlan_id) {

			if (jiffies >
			    (QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
				qlcnic_change_filter(adapter, src_addr, vlan_id,
								tx_ring);
			tmp_fil->ftime = jiffies;
			return;
		}
	}

	fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
	if (!fil)
		return;

	qlcnic_change_filter(adapter, src_addr, vlan_id, tx_ring);

	fil->ftime = jiffies;
	fil->vlan_id = vlan_id;
	memcpy(fil->faddr, &src_addr, ETH_ALEN);
	spin_lock(&adapter->mac_learn_lock);
	hlist_add_head(&(fil->fnode), head);
	adapter->fhash.fnum++;
	spin_unlock(&adapter->mac_learn_lock);
}

static int
qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
		struct cmd_desc_type0 *first_desc,
		struct sk_buff *skb)
{
	u8 opcode = 0, hdr_len = 0;
	u16 flags = 0, vlan_tci = 0;
	int copied, offset, copy_len;
	struct cmd_desc_type0 *hwdesc;
	struct vlan_ethhdr *vh;
	struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
	u16 protocol = ntohs(skb->protocol);
	u32 producer = tx_ring->producer;

	if (protocol == ETH_P_8021Q) {
		vh = (struct vlan_ethhdr *)skb->data;
		flags = FLAGS_VLAN_TAGGED;
		vlan_tci = vh->h_vlan_TCI;
	} else if (vlan_tx_tag_present(skb)) {
		flags = FLAGS_VLAN_OOB;
		vlan_tci = vlan_tx_tag_get(skb);
	}
	if (unlikely(adapter->pvid)) {
		if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
			return -EIO;
		if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
			goto set_flags;

		flags = FLAGS_VLAN_OOB;
		vlan_tci = adapter->pvid;
	}
set_flags:
	qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
	qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);

	if (*(skb->data) & BIT_0) {
		flags |= BIT_0;
		memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
	}
	opcode = TX_ETHER_PKT;
	if ((adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
			skb_shinfo(skb)->gso_s…