1 files changed, 986 insertions, 0 deletions

diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
new file mode 100644
index 000000000000..0de051450a82
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -0,0 +1,986 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/string.h>
+#include <linux/etherdevice.h>
+#include <linux/phylink.h>
+#include <net/udp_tunnel.h>
+#include <net/ip.h>
+#include <linux/if_vlan.h>
+
+#include "../libwx/wx_type.h"
+#include "../libwx/wx_lib.h"
+#include "../libwx/wx_ptp.h"
+#include "../libwx/wx_hw.h"
+#include "../libwx/wx_mbx.h"
+#include "../libwx/wx_sriov.h"
+#include "txgbe_type.h"
+#include "txgbe_hw.h"
+#include "txgbe_phy.h"
+#include "txgbe_aml.h"
+#include "txgbe_irq.h"
+#include "txgbe_fdir.h"
+#include "txgbe_ethtool.h"
+
+char txgbe_driver_name[] = "txgbe";
+
+/* txgbe_pci_tbl - PCI Device ID Table
+ *
+ * Wildcard entries (PCI_ANY_ID) should come last
+ * Last entry must be all 0s
+ *
+ * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
+ *   Class, Class Mask, private data (not used) }
+ */
+static const struct pci_device_id txgbe_pci_tbl[] = {
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_AML5010), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_AML5110), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_AML5025), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_AML5125), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_AML5040), 0},
+	{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_AML5140), 0},
+	/* required last entry */
+	{ .device = 0 }
+};
+
+#define DEFAULT_DEBUG_LEVEL_SHIFT 3
+
+static void txgbe_check_minimum_link(struct wx *wx)
+{
+	struct pci_dev *pdev;
+
+	pdev = wx->pdev;
+	pcie_print_link_status(pdev);
+}
+
+/**
+ * txgbe_enumerate_functions - Get the number of ports this device has
+ * @wx: wx structure
+ *
+ * This function enumerates the phsyical functions co-located on a single slot,
+ * in order to determine how many ports a device has. This is most useful in
+ * determining the required GT/s of PCIe bandwidth necessary for optimal
+ * performance.
+ **/
+static int txgbe_enumerate_functions(struct wx *wx)
+{
+	struct pci_dev *entry, *pdev = wx->pdev;
+	int physfns = 0;
+
+	list_for_each_entry(entry, &pdev->bus->devices, bus_list) {
+		/* When the devices on the bus don't all match our device ID,
+		 * we can't reliably determine the correct number of
+		 * functions. This can occur if a function has been direct
+		 * attached to a virtual machine using VT-d.
+		 */
+		if (entry->vendor != pdev->vendor ||
+		    entry->device != pdev->device)
+			return -EINVAL;
+
+		physfns++;
+	}
+
+	return physfns;
+}
+
+static void txgbe_module_detection_subtask(struct wx *wx)
+{
+	int err;
+
+	if (!test_bit(WX_FLAG_NEED_MODULE_RESET, wx->flags))
+		return;
+
+	/* wait for SFF module ready */
+	msleep(200);
+
+	err = txgbe_identify_module(wx);
+	if (err)
+		return;
+
+	clear_bit(WX_FLAG_NEED_MODULE_RESET, wx->flags);
+}
+
+static void txgbe_link_config_subtask(struct wx *wx)
+{
+	int err;
+
+	if (!test_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags))
+		return;
+
+	err = txgbe_set_phy_link(wx);
+	if (err)
+		return;
+
+	clear_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags);
+}
+
+/**
+ * txgbe_service_task - manages and runs subtasks
+ * @work: pointer to work_struct containing our data
+ **/
+static void txgbe_service_task(struct work_struct *work)
+{
+	struct wx *wx = container_of(work, struct wx, service_task);
+
+	txgbe_module_detection_subtask(wx);
+	txgbe_link_config_subtask(wx);
+
+	wx_service_event_complete(wx);
+}
+
+static void txgbe_init_service(struct wx *wx)
+{
+	timer_setup(&wx->service_timer, wx_service_timer, 0);
+	INIT_WORK(&wx->service_task, txgbe_service_task);
+	clear_bit(WX_STATE_SERVICE_SCHED, wx->state);
+}
+
+static void txgbe_up_complete(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+
+	wx_control_hw(wx, true);
+	wx_configure_vectors(wx);
+
+	/* make sure to complete pre-operations */
+	smp_mb__before_atomic();
+	wx_napi_enable_all(wx);
+
+	switch (wx->mac.type) {
+	case wx_mac_aml40:
+		txgbe_setup_link(wx);
+		phylink_start(wx->phylink);
+		break;
+	case wx_mac_aml:
+		/* Enable TX laser */
+		wr32m(wx, WX_GPIO_DR, TXGBE_GPIOBIT_1, 0);
+		txgbe_setup_link(wx);
+		phylink_start(wx->phylink);
+		break;
+	case wx_mac_sp:
+		phylink_start(wx->phylink);
+		break;
+	default:
+		break;
+	}
+
+	/* clear any pending interrupts, may auto mask */
+	rd32(wx, WX_PX_IC(0));
+	rd32(wx, WX_PX_IC(1));
+	rd32(wx, WX_PX_MISC_IC);
+	txgbe_irq_enable(wx, true);
+
+	/* enable transmits */
+	netif_tx_start_all_queues(netdev);
+	mod_timer(&wx->service_timer, jiffies);
+
+	/* Set PF Reset Done bit so PF/VF Mail Ops can work */
+	wr32m(wx, WX_CFG_PORT_CTL, WX_CFG_PORT_CTL_PFRSTD,
+	      WX_CFG_PORT_CTL_PFRSTD);
+	/* update setting rx tx for all active vfs */
+	wx_set_all_vfs(wx);
+}
+
+static void txgbe_reset(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	u8 old_addr[ETH_ALEN];
+	int err;
+
+	err = txgbe_reset_hw(wx);
+	if (err != 0)
+		wx_err(wx, "Hardware Error: %d\n", err);
+
+	wx_start_hw(wx);
+	/* do not flush user set addresses */
+	memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len);
+	wx_flush_sw_mac_table(wx);
+	wx_mac_set_default_filter(wx, old_addr);
+
+	if (test_bit(WX_STATE_PTP_RUNNING, wx->state))
+		wx_ptp_reset(wx);
+}
+
+static void txgbe_disable_device(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	u32 i;
+
+	wx_disable_pcie_master(wx);
+	/* disable receives */
+	wx_disable_rx(wx);
+
+	/* disable all enabled rx queues */
+	for (i = 0; i < wx->num_rx_queues; i++)
+		/* this call also flushes the previous write */
+		wx_disable_rx_queue(wx, wx->rx_ring[i]);
+
+	netif_tx_stop_all_queues(netdev);
+	netif_tx_disable(netdev);
+
+	wx_irq_disable(wx);
+	wx_napi_disable_all(wx);
+
+	timer_delete_sync(&wx->service_timer);
+
+	if (wx->bus.func < 2)
+		wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0);
+	else
+		wx_err(wx, "%s: invalid bus lan id %d\n",
+		       __func__, wx->bus.func);
+
+	if (wx->num_vfs) {
+		/* Clear EITR Select mapping */
+		wr32(wx, WX_PX_ITRSEL, 0);
+		/* Mark all the VFs as inactive */
+		for (i = 0; i < wx->num_vfs; i++)
+			wx->vfinfo[i].clear_to_send = 0;
+		/* update setting rx tx for all active vfs */
+		wx_set_all_vfs(wx);
+	}
+
+	if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
+	      ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
+		/* disable mac transmiter */
+		wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
+	}
+
+	/* disable transmits in the hardware now that interrupts are off */
+	for (i = 0; i < wx->num_tx_queues; i++) {
+		u8 reg_idx = wx->tx_ring[i]->reg_idx;
+
+		wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
+	}
+
+	/* Disable the Tx DMA engine */
+	wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
+
+	wx_update_stats(wx);
+}
+
+void txgbe_down(struct wx *wx)
+{
+	txgbe_disable_device(wx);
+	txgbe_reset(wx);
+
+	switch (wx->mac.type) {
+	case wx_mac_aml40:
+		phylink_stop(wx->phylink);
+		break;
+	case wx_mac_aml:
+		phylink_stop(wx->phylink);
+		/* Disable TX laser */
+		wr32m(wx, WX_GPIO_DR, TXGBE_GPIOBIT_1, TXGBE_GPIOBIT_1);
+		break;
+	case wx_mac_sp:
+		phylink_stop(wx->phylink);
+		break;
+	default:
+		break;
+	}
+
+	wx_clean_all_tx_rings(wx);
+	wx_clean_all_rx_rings(wx);
+}
+
+void txgbe_up(struct wx *wx)
+{
+	wx_configure(wx);
+	wx_ptp_init(wx);
+	txgbe_up_complete(wx);
+}
+
+/**
+ *  txgbe_init_type_code - Initialize the shared code
+ *  @wx: pointer to hardware structure
+ **/
+static void txgbe_init_type_code(struct wx *wx)
+{
+	u8 device_type = wx->subsystem_device_id & 0xF0;
+
+	switch (wx->device_id) {
+	case TXGBE_DEV_ID_SP1000:
+	case TXGBE_DEV_ID_WX1820:
+		wx->mac.type = wx_mac_sp;
+		break;
+	case TXGBE_DEV_ID_AML5010:
+	case TXGBE_DEV_ID_AML5110:
+	case TXGBE_DEV_ID_AML5025:
+	case TXGBE_DEV_ID_AML5125:
+		wx->mac.type = wx_mac_aml;
+		break;
+	case TXGBE_DEV_ID_AML5040:
+	case TXGBE_DEV_ID_AML5140:
+		wx->mac.type = wx_mac_aml40;
+		break;
+	default:
+		wx->mac.type = wx_mac_unknown;
+		break;
+	}
+
+	switch (device_type) {
+	case TXGBE_ID_SFP:
+		wx->media_type = wx_media_fiber;
+		break;
+	case TXGBE_ID_XAUI:
+	case TXGBE_ID_SGMII:
+		wx->media_type = wx_media_copper;
+		break;
+	case TXGBE_ID_KR_KX_KX4:
+	case TXGBE_ID_MAC_XAUI:
+	case TXGBE_ID_MAC_SGMII:
+		wx->media_type = wx_media_backplane;
+		break;
+	case TXGBE_ID_SFI_XAUI:
+		if (wx->bus.func == 0)
+			wx->media_type = wx_media_fiber;
+		else
+			wx->media_type = wx_media_copper;
+		break;
+	default:
+		wx->media_type = wx_media_unknown;
+		break;
+	}
+}
+
+/**
+ * txgbe_sw_init - Initialize general software structures (struct wx)
+ * @wx: board private structure to initialize
+ **/
+static int txgbe_sw_init(struct wx *wx)
+{
+	u16 msix_count = 0;
+	int err;
+
+	wx->mac.num_rar_entries = TXGBE_RAR_ENTRIES;
+	wx->mac.max_tx_queues = TXGBE_MAX_TXQ;
+	wx->mac.max_rx_queues = TXGBE_MAX_RXQ;
+	wx->mac.mcft_size = TXGBE_MC_TBL_SIZE;
+	wx->mac.vft_size = TXGBE_VFT_TBL_SIZE;
+	wx->mac.rx_pb_size = TXGBE_RX_PB_SIZE;
+	wx->mac.tx_pb_size = TXGBE_TDB_PB_SZ;
+
+	/* PCI config space info */
+	err = wx_sw_init(wx);
+	if (err < 0)
+		return err;
+
+	txgbe_init_type_code(wx);
+
+	/* Set common capability flags and settings */
+	wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS;
+	err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS);
+	if (err)
+		wx_err(wx, "Do not support MSI-X\n");
+	wx->mac.max_msix_vectors = msix_count;
+
+	wx->ring_feature[RING_F_RSS].limit = min_t(int, TXGBE_MAX_RSS_INDICES,
+						   num_online_cpus());
+	wx->rss_enabled = true;
+
+	wx->ring_feature[RING_F_FDIR].limit = min_t(int, TXGBE_MAX_FDIR_INDICES,
+						    num_online_cpus());
+	set_bit(WX_FLAG_FDIR_CAPABLE, wx->flags);
+	set_bit(WX_FLAG_FDIR_HASH, wx->flags);
+	wx->atr_sample_rate = TXGBE_DEFAULT_ATR_SAMPLE_RATE;
+	wx->atr = txgbe_atr;
+	wx->configure_fdir = txgbe_configure_fdir;
+
+	set_bit(WX_FLAG_RSC_CAPABLE, wx->flags);
+	set_bit(WX_FLAG_RSC_ENABLED, wx->flags);
+	set_bit(WX_FLAG_MULTI_64_FUNC, wx->flags);
+
+	/* enable itr by default in dynamic mode */
+	wx->adaptive_itr = true;
+	wx->rx_itr_setting = 1;
+	wx->tx_itr_setting = 1;
+
+	/* set default ring sizes */
+	wx->tx_ring_count = TXGBE_DEFAULT_TXD;
+	wx->rx_ring_count = TXGBE_DEFAULT_RXD;
+	wx->mbx.size = WX_VXMAILBOX_SIZE;
+
+	/* set default work limits */
+	wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
+	wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
+
+	wx->setup_tc = txgbe_setup_tc;
+	wx->do_reset = txgbe_do_reset;
+	set_bit(0, &wx->fwd_bitmask);
+
+	switch (wx->mac.type) {
+	case wx_mac_sp:
+		break;
+	case wx_mac_aml:
+	case wx_mac_aml40:
+		set_bit(WX_FLAG_RX_MERGE_ENABLED, wx->flags);
+		set_bit(WX_FLAG_TXHEAD_WB_ENABLED, wx->flags);
+		set_bit(WX_FLAG_SWFW_RING, wx->flags);
+		wx->swfw_index = 0;
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static void txgbe_init_fdir(struct txgbe *txgbe)
+{
+	txgbe->fdir_filter_count = 0;
+	spin_lock_init(&txgbe->fdir_perfect_lock);
+}
+
+/**
+ * txgbe_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP).
+ **/
+static int txgbe_open(struct net_device *netdev)
+{
+	struct wx *wx = netdev_priv(netdev);
+	int err;
+
+	err = wx_setup_resources(wx);
+	if (err)
+		goto err_reset;
+
+	wx_configure(wx);
+
+	err = txgbe_setup_misc_irq(wx->priv);
+	if (err)
+		goto err_free_resources;
+
+	err = txgbe_request_queue_irqs(wx);
+	if (err)
+		goto err_free_misc_irq;
+
+	/* Notify the stack of the actual queue counts. */
+	err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
+	if (err)
+		goto err_free_irq;
+
+	err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
+	if (err)
+		goto err_free_irq;
+
+	wx_ptp_init(wx);
+
+	txgbe_up_complete(wx);
+
+	return 0;
+
+err_free_irq:
+	wx_free_irq(wx);
+err_free_misc_irq:
+	txgbe_free_misc_irq(wx->priv);
+	wx_reset_interrupt_capability(wx);
+err_free_resources:
+	wx_free_resources(wx);
+err_reset:
+	txgbe_reset(wx);
+
+	return err;
+}
+
+/**
+ * txgbe_close_suspend - actions necessary to both suspend and close flows
+ * @wx: the private wx struct
+ *
+ * This function should contain the necessary work common to both suspending
+ * and closing of the device.
+ */
+static void txgbe_close_suspend(struct wx *wx)
+{
+	wx_ptp_suspend(wx);
+	txgbe_disable_device(wx);
+	wx_free_resources(wx);
+}
+
+/**
+ * txgbe_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS.  The hardware is still under the drivers control, but
+ * needs to be disabled.  A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int txgbe_close(struct net_device *netdev)
+{
+	struct wx *wx = netdev_priv(netdev);
+
+	wx_ptp_stop(wx);
+	txgbe_down(wx);
+	wx_free_irq(wx);
+	txgbe_free_misc_irq(wx->priv);
+	wx_free_resources(wx);
+	txgbe_fdir_filter_exit(wx);
+	wx_control_hw(wx, false);
+
+	return 0;
+}
+
+static void txgbe_dev_shutdown(struct pci_dev *pdev)
+{
+	struct wx *wx = pci_get_drvdata(pdev);
+	struct net_device *netdev;
+
+	netdev = wx->netdev;
+	netif_device_detach(netdev);
+
+	rtnl_lock();
+	if (netif_running(netdev))
+		txgbe_close_suspend(wx);
+	rtnl_unlock();
+
+	wx_control_hw(wx, false);
+
+	pci_disable_device(pdev);
+}
+
+static void txgbe_shutdown(struct pci_dev *pdev)
+{
+	txgbe_dev_shutdown(pdev);
+
+	if (system_state == SYSTEM_POWER_OFF) {
+		pci_wake_from_d3(pdev, false);
+		pci_set_power_state(pdev, PCI_D3hot);
+	}
+}
+
+/**
+ * txgbe_setup_tc - routine to configure net_device for multiple traffic
+ * classes.
+ *
+ * @dev: net device to configure
+ * @tc: number of traffic classes to enable
+ */
+int txgbe_setup_tc(struct net_device *dev, u8 tc)
+{
+	struct wx *wx = netdev_priv(dev);
+
+	/* Hardware has to reinitialize queues and interrupts to
+	 * match packet buffer alignment. Unfortunately, the
+	 * hardware is not flexible enough to do this dynamically.
+	 */
+	if (netif_running(dev))
+		txgbe_close(dev);
+	else
+		txgbe_reset(wx);
+
+	wx_clear_interrupt_scheme(wx);
+
+	if (tc)
+		netdev_set_num_tc(dev, tc);
+	else
+		netdev_reset_tc(dev);
+
+	wx_init_interrupt_scheme(wx);
+
+	if (netif_running(dev))
+		txgbe_open(dev);
+
+	return 0;
+}
+
+static void txgbe_reinit_locked(struct wx *wx)
+{
+	int err = 0;
+
+	netif_trans_update(wx->netdev);
+
+	err = wx_set_state_reset(wx);
+	if (err) {
+		wx_err(wx, "wait device reset timeout\n");
+		return;
+	}
+
+	txgbe_down(wx);
+	txgbe_up(wx);
+
+	clear_bit(WX_STATE_RESETTING, wx->state);
+}
+
+void txgbe_do_reset(struct net_device *netdev)
+{
+	struct wx *wx = netdev_priv(netdev);
+
+	if (netif_running(netdev))
+		txgbe_reinit_locked(wx);
+	else
+		txgbe_reset(wx);
+}
+
+static int txgbe_udp_tunnel_sync(struct net_device *dev, unsigned int table)
+{
+	struct wx *wx = netdev_priv(dev);
+	struct udp_tunnel_info ti;
+
+	udp_tunnel_nic_get_port(dev, table, 0, &ti);
+	switch (ti.type) {
+	case UDP_TUNNEL_TYPE_VXLAN:
+		wr32(wx, TXGBE_CFG_VXLAN, ntohs(ti.port));
+		break;
+	case UDP_TUNNEL_TYPE_VXLAN_GPE:
+		wr32(wx, TXGBE_CFG_VXLAN_GPE, ntohs(ti.port));
+		break;
+	case UDP_TUNNEL_TYPE_GENEVE:
+		wr32(wx, TXGBE_CFG_GENEVE, ntohs(ti.port));
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static const struct udp_tunnel_nic_info txgbe_udp_tunnels = {
+	.sync_table	= txgbe_udp_tunnel_sync,
+	.flags		= UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
+	.tables		= {
+		{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
+		{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN_GPE, },
+		{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, },
+	},
+};
+
+static const struct net_device_ops txgbe_netdev_ops = {
+	.ndo_open               = txgbe_open,
+	.ndo_stop               = txgbe_close,
+	.ndo_change_mtu         = wx_change_mtu,
+	.ndo_start_xmit         = wx_xmit_frame,
+	.ndo_set_rx_mode        = wx_set_rx_mode,
+	.ndo_set_features       = wx_set_features,
+	.ndo_fix_features       = wx_fix_features,
+	.ndo_features_check     = wx_features_check,
+	.ndo_validate_addr      = eth_validate_addr,
+	.ndo_set_mac_address    = wx_set_mac,
+	.ndo_get_stats64        = wx_get_stats64,
+	.ndo_vlan_rx_add_vid    = wx_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid   = wx_vlan_rx_kill_vid,
+	.ndo_hwtstamp_set       = wx_hwtstamp_set,
+	.ndo_hwtstamp_get       = wx_hwtstamp_get,
+};
+
+/**
+ * txgbe_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in txgbe_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * txgbe_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the wx private structure,
+ * and a hardware reset occur.
+ **/
+static int txgbe_probe(struct pci_dev *pdev,
+		       const struct pci_device_id __always_unused *ent)
+{
+	struct net_device *netdev;
+	int err, expected_gts;
+	struct wx *wx = NULL;
+	struct txgbe *txgbe;
+
+	u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0;
+	u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0;
+	u16 build = 0, major = 0, patch = 0;
+	u32 etrack_id = 0;
+
+	err = pci_enable_device_mem(pdev);
+	if (err)
+		return err;
+
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (err) {
+		dev_err(&pdev->dev,
+			"No usable DMA configuration, aborting\n");
+		goto err_pci_disable_dev;
+	}
+
+	err = pci_request_selected_regions(pdev,
+					   pci_select_bars(pdev, IORESOURCE_MEM),
+					   txgbe_driver_name);
+	if (err) {
+		dev_err(&pdev->dev,
+			"pci_request_selected_regions failed 0x%x\n", err);
+		goto err_pci_disable_dev;
+	}
+
+	pci_set_master(pdev);
+
+	netdev = devm_alloc_etherdev_mqs(&pdev->dev,
+					 sizeof(struct wx),
+					 TXGBE_MAX_TX_QUEUES,
+					 TXGBE_MAX_RX_QUEUES);
+	if (!netdev) {
+		err = -ENOMEM;
+		goto err_pci_release_regions;
+	}
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
+	wx = netdev_priv(netdev);
+	wx->netdev = netdev;
+	wx->pdev = pdev;
+
+	wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
+
+	wx->hw_addr = devm_ioremap(&pdev->dev,
+				   pci_resource_start(pdev, 0),
+				   pci_resource_len(pdev, 0));
+	if (!wx->hw_addr) {
+		err = -EIO;
+		goto err_pci_release_regions;
+	}
+
+	/* The sapphire supports up to 63 VFs per pf, but physical
+	 * function also need one pool for basic networking.
+	 */
+	pci_sriov_set_totalvfs(pdev, TXGBE_MAX_VFS_DRV_LIMIT);
+	wx->driver_name = txgbe_driver_name;
+	txgbe_set_ethtool_ops(netdev);
+	netdev->netdev_ops = &txgbe_netdev_ops;
+	netdev->udp_tunnel_nic_info = &txgbe_udp_tunnels;
+
+	/* setup the private structure */
+	err = txgbe_sw_init(wx);
+	if (err)
+		goto err_pci_release_regions;
+
+	/* check if flash load is done after hw power up */
+	err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST);
+	if (err)
+		goto err_free_mac_table;
+	err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST);
+	if (err)
+		goto err_free_mac_table;
+
+	err = wx_mng_present(wx);
+	if (err) {
+		dev_err(&pdev->dev, "Management capability is not present\n");
+		goto err_free_mac_table;
+	}
+
+	err = txgbe_reset_hw(wx);
+	if (err) {
+		dev_err(&pdev->dev, "HW Init failed: %d\n", err);
+		goto err_free_mac_table;
+	}
+
+	netdev->features = NETIF_F_SG |
+			   NETIF_F_TSO |
+			   NETIF_F_TSO6 |
+			   NETIF_F_RXHASH |
+			   NETIF_F_RXCSUM |
+			   NETIF_F_HW_CSUM;
+
+	netdev->gso_partial_features =  NETIF_F_GSO_ENCAP_ALL;
+	netdev->features |= netdev->gso_partial_features;
+	netdev->features |= NETIF_F_SCTP_CRC;
+	netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
+	netdev->hw_enc_features |= netdev->vlan_features;
+	netdev->features |= NETIF_F_VLAN_FEATURES;
+	/* copy netdev features into list of user selectable features */
+	netdev->hw_features |= netdev->features | NETIF_F_RXALL;
+	netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
+	netdev->features |= NETIF_F_HIGHDMA;
+	netdev->hw_features |= NETIF_F_GRO;
+	netdev->features |= NETIF_F_GRO;
+	netdev->hw_features |= NETIF_F_LRO;
+	netdev->features |= NETIF_F_LRO;
+	netdev->features |= NETIF_F_RX_UDP_TUNNEL_PORT;
+
+	netdev->priv_flags |= IFF_UNICAST_FLT;
+	netdev->priv_flags |= IFF_SUPP_NOFCS;
+	netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
+
+	netdev->min_mtu = ETH_MIN_MTU;
+	netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE -
+			  (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+
+	/* make sure the EEPROM is good */
+	err = txgbe_validate_eeprom_checksum(wx, NULL);
+	if (err != 0) {
+		dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
+		wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST);
+		err = -EIO;
+		goto err_free_mac_table;
+	}
+
+	eth_hw_addr_set(netdev, wx->mac.perm_addr);
+	wx_mac_set_default_filter(wx, wx->mac.perm_addr);
+
+	txgbe_init_service(wx);
+
+	err = wx_init_interrupt_scheme(wx);
+	if (err)
+		goto err_cancel_service;
+
+	/* Save off EEPROM version number and Option Rom version which
+	 * together make a unique identify for the eeprom
+	 */
+	wx_read_ee_hostif(wx,
+			  wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H,
+			  &eeprom_verh);
+	wx_read_ee_hostif(wx,
+			  wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L,
+			  &eeprom_verl);
+	etrack_id = (eeprom_verh << 16) | eeprom_verl;
+
+	wx_read_ee_hostif(wx,
+			  wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG,
+			  &offset);
+
+	/* Make sure offset to SCSI block is valid */
+	if (!(offset == 0x0) && !(offset == 0xffff)) {
+		wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh);
+		wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl);
+
+		/* Only display Option Rom if exist */
+		if (eeprom_cfg_blkl && eeprom_cfg_blkh) {
+			major = eeprom_cfg_blkl >> 8;
+			build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8);
+			patch = eeprom_cfg_blkh & 0x00ff;
+
+			snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
+				 "0x%08x, %d.%d.%d", etrack_id, major, build,
+				 patch);
+		} else {
+			snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
+				 "0x%08x", etrack_id);
+		}
+	} else {
+		snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
+			 "0x%08x", etrack_id);
+	}
+
+	if (etrack_id < 0x20010)
+		dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n");
+
+	err = txgbe_test_hostif(wx);
+	if (err != 0) {
+		dev_err(&pdev->dev, "Mismatched Firmware version\n");
+		err = -EIO;
+		goto err_release_hw;
+	}
+
+	txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL);
+	if (!txgbe) {
+		err = -ENOMEM;
+		goto err_release_hw;
+	}
+
+	txgbe->wx = wx;
+	wx->priv = txgbe;
+
+	txgbe_init_fdir(txgbe);
+
+	err = txgbe_init_phy(txgbe);
+	if (err)
+		goto err_release_hw;
+
+	err = register_netdev(netdev);
+	if (err)
+		goto err_remove_phy;
+
+	pci_set_drvdata(pdev, wx);
+
+	netif_tx_stop_all_queues(netdev);
+
+	/* calculate the expected PCIe bandwidth required for optimal
+	 * performance. Note that some older parts will never have enough
+	 * bandwidth due to being older generation PCIe parts. We clamp these
+	 * parts to ensure that no warning is displayed, as this could confuse
+	 * users otherwise.
+	 */
+	expected_gts = txgbe_enumerate_functions(wx) * 10;
+
+	/* don't check link if we failed to enumerate functions */
+	if (expected_gts > 0)
+		txgbe_check_minimum_link(wx);
+	else
+		dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n");
+
+	return 0;
+
+err_remove_phy:
+	txgbe_remove_phy(txgbe);
+err_release_hw:
+	wx_clear_interrupt_scheme(wx);
+	wx_control_hw(wx, false);
+err_cancel_service:
+	timer_delete_sync(&wx->service_timer);
+	cancel_work_sync(&wx->service_task);
+err_free_mac_table:
+	kfree(wx->rss_key);
+	kfree(wx->mac_table);
+err_pci_release_regions:
+	pci_release_selected_regions(pdev,
+				     pci_select_bars(pdev, IORESOURCE_MEM));
+err_pci_disable_dev:
+	pci_disable_device(pdev);
+	return err;
+}
+
+/**
+ * txgbe_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * txgbe_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device.  The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void txgbe_remove(struct pci_dev *pdev)
+{
+	struct wx *wx = pci_get_drvdata(pdev);
+	struct txgbe *txgbe = wx->priv;
+	struct net_device *netdev;
+
+	cancel_work_sync(&wx->service_task);
+
+	netdev = wx->netdev;
+	wx_disable_sriov(wx);
+	unregister_netdev(netdev);
+
+	txgbe_remove_phy(txgbe);
+	wx_free_isb_resources(wx);
+
+	pci_release_selected_regions(pdev,
+				     pci_select_bars(pdev, IORESOURCE_MEM));
+
+	kfree(wx->rss_key);
+	kfree(wx->mac_table);
+	wx_clear_interrupt_scheme(wx);
+
+	pci_disable_device(pdev);
+}
+
+static struct pci_driver txgbe_driver = {
+	.name     = txgbe_driver_name,
+	.id_table = txgbe_pci_tbl,
+	.probe    = txgbe_probe,
+	.remove   = txgbe_remove,
+	.shutdown = txgbe_shutdown,
+	.sriov_configure = wx_pci_sriov_configure,
+};
+
+module_pci_driver(txgbe_driver);
+
+MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl);
+MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>");
+MODULE_DESCRIPTION("WangXun(R) 10/25/40 Gigabit PCI Express Network Driver");
+MODULE_LICENSE("GPL");