Merge branch 'txgbe'

Jiawen Wu says:

====================
net: WangXun txgbe ethernet driver

This patch series adds support for WangXun 10 gigabit NIC, to initialize
hardware, set mac address, and register netdev.

Change log:
v6: address comments:
Jakub Kicinski: check with scripts/kernel-doc
v5: address comments:
Jakub Kicinski: clean build with W=1 C=1
v4: address comments:
Andrew Lunn: https://lore.kernel.org/all/[e-mail]/
v3: address comments:
Andrew Lunn: remove hw function ops, reorder functions, use BIT(n)
for register bit offset, move the same code of txgbe
and ngbe to libwx
v2: address comments:
Andrew Lunn: https://lore.kernel.org/netdev/[e-mail]/
====================

Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/wangxun/Kconfig

···
 
 if NET_VENDOR_WANGXUN
 
+config LIBWX
+	tristate
+	help
+	Common library for Wangxun(R) Ethernet drivers.
+
 config NGBE
 	tristate "Wangxun(R) GbE PCI Express adapters support"
 	depends on PCI
···
 config TXGBE
 	tristate "Wangxun(R) 10GbE PCI Express adapters support"
 	depends on PCI
+	select LIBWX
 	help
 	  This driver supports Wangxun(R) 10GbE PCI Express family of
 	  adapters.

drivers/net/ethernet/wangxun/Makefile

···
 # Makefile for the Wangxun network device drivers.
 #
 
+obj-$(CONFIG_LIBWX) += libwx/
 obj-$(CONFIG_TXGBE) += txgbe/
 obj-$(CONFIG_NGBE) += ngbe/

drivers/net/ethernet/wangxun/libwx/Makefile

···
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd.
+#
+
+obj-$(CONFIG_LIBWX) += libwx.o
+
+libwx-objs := wx_hw.o

drivers/net/ethernet/wangxun/libwx/wx_hw.c

···
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
+
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/iopoll.h>
+#include <linux/pci.h>
+
+#include "wx_type.h"
+#include "wx_hw.h"
+
+static void wx_intr_disable(struct wx_hw *wxhw, u64 qmask)
+{
+	u32 mask;
+
+	mask = (qmask & 0xFFFFFFFF);
+	if (mask)
+		wr32(wxhw, WX_PX_IMS(0), mask);
+
+	if (wxhw->mac.type == wx_mac_sp) {
+		mask = (qmask >> 32);
+		if (mask)
+			wr32(wxhw, WX_PX_IMS(1), mask);
+	}
+}
+
+/* cmd_addr is used for some special command:
+ * 1. to be sector address, when implemented erase sector command
+ * 2. to be flash address when implemented read, write flash address
+ */
+static int wx_fmgr_cmd_op(struct wx_hw *wxhw, u32 cmd, u32 cmd_addr)
+{
+	u32 cmd_val = 0, val = 0;
+
+	cmd_val = WX_SPI_CMD_CMD(cmd) |
+		  WX_SPI_CMD_CLK(WX_SPI_CLK_DIV) |
+		  cmd_addr;
+	wr32(wxhw, WX_SPI_CMD, cmd_val);
+
+	return read_poll_timeout(rd32, val, (val & 0x1), 10, 100000,
+				 false, wxhw, WX_SPI_STATUS);
+}
+
+static int wx_flash_read_dword(struct wx_hw *wxhw, u32 addr, u32 *data)
+{
+	int ret = 0;
+
+	ret = wx_fmgr_cmd_op(wxhw, WX_SPI_CMD_READ_DWORD, addr);
+	if (ret < 0)
+		return ret;
+
+	*data = rd32(wxhw, WX_SPI_DATA);
+
+	return ret;
+}
+
+int wx_check_flash_load(struct wx_hw *hw, u32 check_bit)
+{
+	u32 reg = 0;
+	int err = 0;
+
+	/* if there's flash existing */
+	if (!(rd32(hw, WX_SPI_STATUS) &
+	      WX_SPI_STATUS_FLASH_BYPASS)) {
+		/* wait hw load flash done */
+		err = read_poll_timeout(rd32, reg, !(reg & check_bit), 20000, 2000000,
+					false, hw, WX_SPI_ILDR_STATUS);
+		if (err < 0)
+			wx_err(hw, "Check flash load timeout.\n");
+	}
+
+	return err;
+}
+EXPORT_SYMBOL(wx_check_flash_load);
+
+/**
+ *  wx_get_mac_addr - Generic get MAC address
+ *  @wxhw: pointer to hardware structure
+ *  @mac_addr: Adapter MAC address
+ *
+ *  Reads the adapter's MAC address from first Receive Address Register (RAR0)
+ *  A reset of the adapter must be performed prior to calling this function
+ *  in order for the MAC address to have been loaded from the EEPROM into RAR0
+ **/
+void wx_get_mac_addr(struct wx_hw *wxhw, u8 *mac_addr)
+{
+	u32 rar_high;
+	u32 rar_low;
+	u16 i;
+
+	wr32(wxhw, WX_PSR_MAC_SWC_IDX, 0);
+	rar_high = rd32(wxhw, WX_PSR_MAC_SWC_AD_H);
+	rar_low = rd32(wxhw, WX_PSR_MAC_SWC_AD_L);
+
+	for (i = 0; i < 2; i++)
+		mac_addr[i] = (u8)(rar_high >> (1 - i) * 8);
+
+	for (i = 0; i < 4; i++)
+		mac_addr[i + 2] = (u8)(rar_low >> (3 - i) * 8);
+}
+EXPORT_SYMBOL(wx_get_mac_addr);
+
+/**
+ *  wx_set_rar - Set Rx address register
+ *  @wxhw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *  @addr: Address to put into receive address register
+ *  @pools: VMDq "set" or "pool" index
+ *  @enable_addr: set flag that address is active
+ *
+ *  Puts an ethernet address into a receive address register.
+ **/
+int wx_set_rar(struct wx_hw *wxhw, u32 index, u8 *addr, u64 pools,
+	       u32 enable_addr)
+{
+	u32 rar_entries = wxhw->mac.num_rar_entries;
+	u32 rar_low, rar_high;
+
+	/* Make sure we are using a valid rar index range */
+	if (index >= rar_entries) {
+		wx_err(wxhw, "RAR index %d is out of range.\n", index);
+		return -EINVAL;
+	}
+
+	/* select the MAC address */
+	wr32(wxhw, WX_PSR_MAC_SWC_IDX, index);
+
+	/* setup VMDq pool mapping */
+	wr32(wxhw, WX_PSR_MAC_SWC_VM_L, pools & 0xFFFFFFFF);
+	if (wxhw->mac.type == wx_mac_sp)
+		wr32(wxhw, WX_PSR_MAC_SWC_VM_H, pools >> 32);
+
+	/* HW expects these in little endian so we reverse the byte
+	 * order from network order (big endian) to little endian
+	 *
+	 * Some parts put the VMDq setting in the extra RAH bits,
+	 * so save everything except the lower 16 bits that hold part
+	 * of the address and the address valid bit.
+	 */
+	rar_low = ((u32)addr[5] |
+		  ((u32)addr[4] << 8) |
+		  ((u32)addr[3] << 16) |
+		  ((u32)addr[2] << 24));
+	rar_high = ((u32)addr[1] |
+		   ((u32)addr[0] << 8));
+	if (enable_addr != 0)
+		rar_high |= WX_PSR_MAC_SWC_AD_H_AV;
+
+	wr32(wxhw, WX_PSR_MAC_SWC_AD_L, rar_low);
+	wr32m(wxhw, WX_PSR_MAC_SWC_AD_H,
+	      (WX_PSR_MAC_SWC_AD_H_AD(~0) |
+	       WX_PSR_MAC_SWC_AD_H_ADTYPE(~0) |
+	       WX_PSR_MAC_SWC_AD_H_AV),
+	      rar_high);
+
+	return 0;
+}
+EXPORT_SYMBOL(wx_set_rar);
+
+/**
+ *  wx_clear_rar - Remove Rx address register
+ *  @wxhw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *
+ *  Clears an ethernet address from a receive address register.
+ **/
+int wx_clear_rar(struct wx_hw *wxhw, u32 index)
+{
+	u32 rar_entries = wxhw->mac.num_rar_entries;
+
+	/* Make sure we are using a valid rar index range */
+	if (index >= rar_entries) {
+		wx_err(wxhw, "RAR index %d is out of range.\n", index);
+		return -EINVAL;
+	}
+
+	/* Some parts put the VMDq setting in the extra RAH bits,
+	 * so save everything except the lower 16 bits that hold part
+	 * of the address and the address valid bit.
+	 */
+	wr32(wxhw, WX_PSR_MAC_SWC_IDX, index);
+
+	wr32(wxhw, WX_PSR_MAC_SWC_VM_L, 0);
+	wr32(wxhw, WX_PSR_MAC_SWC_VM_H, 0);
+
+	wr32(wxhw, WX_PSR_MAC_SWC_AD_L, 0);
+	wr32m(wxhw, WX_PSR_MAC_SWC_AD_H,
+	      (WX_PSR_MAC_SWC_AD_H_AD(~0) |
+	       WX_PSR_MAC_SWC_AD_H_ADTYPE(~0) |
+	       WX_PSR_MAC_SWC_AD_H_AV),
+	      0);
+
+	return 0;
+}
+EXPORT_SYMBOL(wx_clear_rar);
+
+/**
+ *  wx_clear_vmdq - Disassociate a VMDq pool index from a rx address
+ *  @wxhw: pointer to hardware struct
+ *  @rar: receive address register index to disassociate
+ *  @vmdq: VMDq pool index to remove from the rar
+ **/
+static int wx_clear_vmdq(struct wx_hw *wxhw, u32 rar, u32 __maybe_unused vmdq)
+{
+	u32 rar_entries = wxhw->mac.num_rar_entries;
+	u32 mpsar_lo, mpsar_hi;
+
+	/* Make sure we are using a valid rar index range */
+	if (rar >= rar_entries) {
+		wx_err(wxhw, "RAR index %d is out of range.\n", rar);
+		return -EINVAL;
+	}
+
+	wr32(wxhw, WX_PSR_MAC_SWC_IDX, rar);
+	mpsar_lo = rd32(wxhw, WX_PSR_MAC_SWC_VM_L);
+	mpsar_hi = rd32(wxhw, WX_PSR_MAC_SWC_VM_H);
+
+	if (!mpsar_lo && !mpsar_hi)
+		return 0;
+
+	/* was that the last pool using this rar? */
+	if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
+		wx_clear_rar(wxhw, rar);
+
+	return 0;
+}
+
+/**
+ *  wx_init_uta_tables - Initialize the Unicast Table Array
+ *  @wxhw: pointer to hardware structure
+ **/
+static void wx_init_uta_tables(struct wx_hw *wxhw)
+{
+	int i;
+
+	wx_dbg(wxhw, " Clearing UTA\n");
+
+	for (i = 0; i < 128; i++)
+		wr32(wxhw, WX_PSR_UC_TBL(i), 0);
+}
+
+/**
+ *  wx_init_rx_addrs - Initializes receive address filters.
+ *  @wxhw: pointer to hardware structure
+ *
+ *  Places the MAC address in receive address register 0 and clears the rest
+ *  of the receive address registers. Clears the multicast table. Assumes
+ *  the receiver is in reset when the routine is called.
+ **/
+void wx_init_rx_addrs(struct wx_hw *wxhw)
+{
+	u32 rar_entries = wxhw->mac.num_rar_entries;
+	u32 psrctl;
+	int i;
+
+	/* If the current mac address is valid, assume it is a software override
+	 * to the permanent address.
+	 * Otherwise, use the permanent address from the eeprom.
+	 */
+	if (!is_valid_ether_addr(wxhw->mac.addr)) {
+		/* Get the MAC address from the RAR0 for later reference */
+		wx_get_mac_addr(wxhw, wxhw->mac.addr);
+		wx_dbg(wxhw, "Keeping Current RAR0 Addr = %pM\n", wxhw->mac.addr);
+	} else {
+		/* Setup the receive address. */
+		wx_dbg(wxhw, "Overriding MAC Address in RAR[0]\n");
+		wx_dbg(wxhw, "New MAC Addr = %pM\n", wxhw->mac.addr);
+
+		wx_set_rar(wxhw, 0, wxhw->mac.addr, 0, WX_PSR_MAC_SWC_AD_H_AV);
+
+		if (wxhw->mac.type == wx_mac_sp) {
+			/* clear VMDq pool/queue selection for RAR 0 */
+			wx_clear_vmdq(wxhw, 0, WX_CLEAR_VMDQ_ALL);
+		}
+	}
+
+	/* Zero out the other receive addresses. */
+	wx_dbg(wxhw, "Clearing RAR[1-%d]\n", rar_entries - 1);
+	for (i = 1; i < rar_entries; i++) {
+		wr32(wxhw, WX_PSR_MAC_SWC_IDX, i);
+		wr32(wxhw, WX_PSR_MAC_SWC_AD_L, 0);
+		wr32(wxhw, WX_PSR_MAC_SWC_AD_H, 0);
+	}
+
+	/* Clear the MTA */
+	wxhw->addr_ctrl.mta_in_use = 0;
+	psrctl = rd32(wxhw, WX_PSR_CTL);
+	psrctl &= ~(WX_PSR_CTL_MO | WX_PSR_CTL_MFE);
+	psrctl |= wxhw->mac.mc_filter_type << WX_PSR_CTL_MO_SHIFT;
+	wr32(wxhw, WX_PSR_CTL, psrctl);
+	wx_dbg(wxhw, " Clearing MTA\n");
+	for (i = 0; i < wxhw->mac.mcft_size; i++)
+		wr32(wxhw, WX_PSR_MC_TBL(i), 0);
+
+	wx_init_uta_tables(wxhw);
+}
+EXPORT_SYMBOL(wx_init_rx_addrs);
+
+void wx_disable_rx(struct wx_hw *wxhw)
+{
+	u32 pfdtxgswc;
+	u32 rxctrl;
+
+	rxctrl = rd32(wxhw, WX_RDB_PB_CTL);
+	if (rxctrl & WX_RDB_PB_CTL_RXEN) {
+		pfdtxgswc = rd32(wxhw, WX_PSR_CTL);
+		if (pfdtxgswc & WX_PSR_CTL_SW_EN) {
+			pfdtxgswc &= ~WX_PSR_CTL_SW_EN;
+			wr32(wxhw, WX_PSR_CTL, pfdtxgswc);
+			wxhw->mac.set_lben = true;
+		} else {
+			wxhw->mac.set_lben = false;
+		}
+		rxctrl &= ~WX_RDB_PB_CTL_RXEN;
+		wr32(wxhw, WX_RDB_PB_CTL, rxctrl);
+
+		if (!(((wxhw->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
+		      ((wxhw->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
+			/* disable mac receiver */
+			wr32m(wxhw, WX_MAC_RX_CFG,
+			      WX_MAC_RX_CFG_RE, 0);
+		}
+	}
+}
+EXPORT_SYMBOL(wx_disable_rx);
+
+/**
+ *  wx_disable_pcie_master - Disable PCI-express master access
+ *  @wxhw: pointer to hardware structure
+ *
+ *  Disables PCI-Express master access and verifies there are no pending
+ *  requests.
+ **/
+int wx_disable_pcie_master(struct wx_hw *wxhw)
+{
+	int status = 0;
+	u32 val;
+
+	/* Always set this bit to ensure any future transactions are blocked */
+	pci_clear_master(wxhw->pdev);
+
+	/* Exit if master requests are blocked */
+	if (!(rd32(wxhw, WX_PX_TRANSACTION_PENDING)))
+		return 0;
+
+	/* Poll for master request bit to clear */
+	status = read_poll_timeout(rd32, val, !val, 100, WX_PCI_MASTER_DISABLE_TIMEOUT,
+				   false, wxhw, WX_PX_TRANSACTION_PENDING);
+	if (status < 0)
+		wx_err(wxhw, "PCIe transaction pending bit did not clear.\n");
+
+	return status;
+}
+EXPORT_SYMBOL(wx_disable_pcie_master);
+
+/**
+ *  wx_stop_adapter - Generic stop Tx/Rx units
+ *  @wxhw: pointer to hardware structure
+ *
+ *  Sets the adapter_stopped flag within wx_hw struct. Clears interrupts,
+ *  disables transmit and receive units. The adapter_stopped flag is used by
+ *  the shared code and drivers to determine if the adapter is in a stopped
+ *  state and should not touch the hardware.
+ **/
+int wx_stop_adapter(struct wx_hw *wxhw)
+{
+	u16 i;
+
+	/* Set the adapter_stopped flag so other driver functions stop touching
+	 * the hardware
+	 */
+	wxhw->adapter_stopped = true;
+
+	/* Disable the receive unit */
+	wx_disable_rx(wxhw);
+
+	/* Set interrupt mask to stop interrupts from being generated */
+	wx_intr_disable(wxhw, WX_INTR_ALL);
+
+	/* Clear any pending interrupts, flush previous writes */
+	wr32(wxhw, WX_PX_MISC_IC, 0xffffffff);
+	wr32(wxhw, WX_BME_CTL, 0x3);
+
+	/* Disable the transmit unit.  Each queue must be disabled. */
+	for (i = 0; i < wxhw->mac.max_tx_queues; i++) {
+		wr32m(wxhw, WX_PX_TR_CFG(i),
+		      WX_PX_TR_CFG_SWFLSH | WX_PX_TR_CFG_ENABLE,
+		      WX_PX_TR_CFG_SWFLSH);
+	}
+
+	/* Disable the receive unit by stopping each queue */
+	for (i = 0; i < wxhw->mac.max_rx_queues; i++) {
+		wr32m(wxhw, WX_PX_RR_CFG(i),
+		      WX_PX_RR_CFG_RR_EN, 0);
+	}
+
+	/* flush all queues disables */
+	WX_WRITE_FLUSH(wxhw);
+
+	/* Prevent the PCI-E bus from hanging by disabling PCI-E master
+	 * access and verify no pending requests
+	 */
+	return wx_disable_pcie_master(wxhw);
+}
+EXPORT_SYMBOL(wx_stop_adapter);
+
+void wx_reset_misc(struct wx_hw *wxhw)
+{
+	int i;
+
+	/* receive packets that size > 2048 */
+	wr32m(wxhw, WX_MAC_RX_CFG, WX_MAC_RX_CFG_JE, WX_MAC_RX_CFG_JE);
+
+	/* clear counters on read */
+	wr32m(wxhw, WX_MMC_CONTROL,
+	      WX_MMC_CONTROL_RSTONRD, WX_MMC_CONTROL_RSTONRD);
+
+	wr32m(wxhw, WX_MAC_RX_FLOW_CTRL,
+	      WX_MAC_RX_FLOW_CTRL_RFE, WX_MAC_RX_FLOW_CTRL_RFE);
+
+	wr32(wxhw, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
+
+	wr32m(wxhw, WX_MIS_RST_ST,
+	      WX_MIS_RST_ST_RST_INIT, 0x1E00);
+
+	/* errata 4: initialize mng flex tbl and wakeup flex tbl*/
+	wr32(wxhw, WX_PSR_MNG_FLEX_SEL, 0);
+	for (i = 0; i < 16; i++) {
+		wr32(wxhw, WX_PSR_MNG_FLEX_DW_L(i), 0);
+		wr32(wxhw, WX_PSR_MNG_FLEX_DW_H(i), 0);
+		wr32(wxhw, WX_PSR_MNG_FLEX_MSK(i), 0);
+	}
+	wr32(wxhw, WX_PSR_LAN_FLEX_SEL, 0);
+	for (i = 0; i < 16; i++) {
+		wr32(wxhw, WX_PSR_LAN_FLEX_DW_L(i), 0);
+		wr32(wxhw, WX_PSR_LAN_FLEX_DW_H(i), 0);
+		wr32(wxhw, WX_PSR_LAN_FLEX_MSK(i), 0);
+	}
+
+	/* set pause frame dst mac addr */
+	wr32(wxhw, WX_RDB_PFCMACDAL, 0xC2000001);
+	wr32(wxhw, WX_RDB_PFCMACDAH, 0x0180);
+}
+EXPORT_SYMBOL(wx_reset_misc);
+
+int wx_sw_init(struct wx_hw *wxhw)
+{
+	struct pci_dev *pdev = wxhw->pdev;
+	u32 ssid = 0;
+	int err = 0;
+
+	wxhw->vendor_id = pdev->vendor;
+	wxhw->device_id = pdev->device;
+	wxhw->revision_id = pdev->revision;
+	wxhw->oem_svid = pdev->subsystem_vendor;
+	wxhw->oem_ssid = pdev->subsystem_device;
+	wxhw->bus.device = PCI_SLOT(pdev->devfn);
+	wxhw->bus.func = PCI_FUNC(pdev->devfn);
+
+	if (wxhw->oem_svid == PCI_VENDOR_ID_WANGXUN) {
+		wxhw->subsystem_vendor_id = pdev->subsystem_vendor;
+		wxhw->subsystem_device_id = pdev->subsystem_device;
+	} else {
+		err = wx_flash_read_dword(wxhw, 0xfffdc, &ssid);
+		if (!err)
+			wxhw->subsystem_device_id = swab16((u16)ssid);
+
+		return err;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(wx_sw_init);
+
+MODULE_LICENSE("GPL");

drivers/net/ethernet/wangxun/libwx/wx_hw.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _WX_HW_H_
+#define _WX_HW_H_
+
+int wx_check_flash_load(struct wx_hw *hw, u32 check_bit);
+void wx_get_mac_addr(struct wx_hw *wxhw, u8 *mac_addr);
+int wx_set_rar(struct wx_hw *wxhw, u32 index, u8 *addr, u64 pools, u32 enable_addr);
+int wx_clear_rar(struct wx_hw *wxhw, u32 index);
+void wx_init_rx_addrs(struct wx_hw *wxhw);
+void wx_disable_rx(struct wx_hw *wxhw);
+int wx_disable_pcie_master(struct wx_hw *wxhw);
+int wx_stop_adapter(struct wx_hw *wxhw);
+void wx_reset_misc(struct wx_hw *wxhw);
+int wx_sw_init(struct wx_hw *wxhw);
+
+#endif /* _WX_HW_H_ */

drivers/net/ethernet/wangxun/libwx/wx_type.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _WX_TYPE_H_
+#define _WX_TYPE_H_
+
+/* Vendor ID */
+#ifndef PCI_VENDOR_ID_WANGXUN
+#define PCI_VENDOR_ID_WANGXUN                   0x8088
+#endif
+
+#define WX_NCSI_SUP                             0x8000
+#define WX_NCSI_MASK                            0x8000
+#define WX_WOL_SUP                              0x4000
+#define WX_WOL_MASK                             0x4000
+
+/**************** Global Registers ****************************/
+/* chip control Registers */
+#define WX_MIS_PWR                   0x10000
+#define WX_MIS_RST                   0x1000C
+#define WX_MIS_RST_LAN_RST(_i)       BIT((_i) + 1)
+#define WX_MIS_RST_ST                0x10030
+#define WX_MIS_RST_ST_RST_INI_SHIFT  8
+#define WX_MIS_RST_ST_RST_INIT       (0xFF << WX_MIS_RST_ST_RST_INI_SHIFT)
+
+/* FMGR Registers */
+#define WX_SPI_CMD                   0x10104
+#define WX_SPI_CMD_READ_DWORD        0x1
+#define WX_SPI_CLK_DIV               0x3
+#define WX_SPI_CMD_CMD(_v)           (((_v) & 0x7) << 28)
+#define WX_SPI_CMD_CLK(_v)           (((_v) & 0x7) << 25)
+#define WX_SPI_CMD_ADDR(_v)          (((_v) & 0xFFFFFF))
+#define WX_SPI_DATA                  0x10108
+#define WX_SPI_DATA_BYPASS           BIT(31)
+#define WX_SPI_DATA_STATUS(_v)       (((_v) & 0xFF) << 16)
+#define WX_SPI_DATA_OP_DONE          BIT(0)
+#define WX_SPI_STATUS                0x1010C
+#define WX_SPI_STATUS_OPDONE         BIT(0)
+#define WX_SPI_STATUS_FLASH_BYPASS   BIT(31)
+#define WX_SPI_ILDR_STATUS           0x10120
+
+/* Sensors for PVT(Process Voltage Temperature) */
+#define WX_TS_EN                     0x10304
+#define WX_TS_EN_ENA                 BIT(0)
+#define WX_TS_ALARM_THRE             0x1030C
+#define WX_TS_DALARM_THRE            0x10310
+#define WX_TS_INT_EN                 0x10314
+#define WX_TS_INT_EN_DALARM_INT_EN   BIT(1)
+#define WX_TS_INT_EN_ALARM_INT_EN    BIT(0)
+#define WX_TS_ALARM_ST               0x10318
+#define WX_TS_ALARM_ST_DALARM        BIT(1)
+#define WX_TS_ALARM_ST_ALARM         BIT(0)
+
+/*********************** Transmit DMA registers **************************/
+/* transmit global control */
+#define WX_TDM_CTL                   0x18000
+/* TDM CTL BIT */
+#define WX_TDM_CTL_TE                BIT(0) /* Transmit Enable */
+
+/***************************** RDB registers *********************************/
+/* receive packet buffer */
+#define WX_RDB_PB_CTL                0x19000
+#define WX_RDB_PB_CTL_RXEN           BIT(31) /* Enable Receiver */
+#define WX_RDB_PB_CTL_DISABLED       BIT(0)
+/* statistic */
+#define WX_RDB_PFCMACDAL             0x19210
+#define WX_RDB_PFCMACDAH             0x19214
+
+/******************************* PSR Registers *******************************/
+/* psr control */
+#define WX_PSR_CTL                   0x15000
+/* Header split receive */
+#define WX_PSR_CTL_SW_EN             BIT(18)
+#define WX_PSR_CTL_RSC_ACK           BIT(17)
+#define WX_PSR_CTL_RSC_DIS           BIT(16)
+#define WX_PSR_CTL_PCSD              BIT(13)
+#define WX_PSR_CTL_IPPCSE            BIT(12)
+#define WX_PSR_CTL_BAM               BIT(10)
+#define WX_PSR_CTL_UPE               BIT(9)
+#define WX_PSR_CTL_MPE               BIT(8)
+#define WX_PSR_CTL_MFE               BIT(7)
+#define WX_PSR_CTL_MO_SHIFT          5
+#define WX_PSR_CTL_MO                (0x3 << WX_PSR_CTL_MO_SHIFT)
+#define WX_PSR_CTL_TPE               BIT(4)
+/* mcasst/ucast overflow tbl */
+#define WX_PSR_MC_TBL(_i)            (0x15200  + ((_i) * 4))
+#define WX_PSR_UC_TBL(_i)            (0x15400 + ((_i) * 4))
+
+/* Management */
+#define WX_PSR_MNG_FLEX_SEL          0x1582C
+#define WX_PSR_MNG_FLEX_DW_L(_i)     (0x15A00 + ((_i) * 16))
+#define WX_PSR_MNG_FLEX_DW_H(_i)     (0x15A04 + ((_i) * 16))
+#define WX_PSR_MNG_FLEX_MSK(_i)      (0x15A08 + ((_i) * 16))
+#define WX_PSR_LAN_FLEX_SEL          0x15B8C
+#define WX_PSR_LAN_FLEX_DW_L(_i)     (0x15C00 + ((_i) * 16))
+#define WX_PSR_LAN_FLEX_DW_H(_i)     (0x15C04 + ((_i) * 16))
+#define WX_PSR_LAN_FLEX_MSK(_i)      (0x15C08 + ((_i) * 16))
+
+/* mac switcher */
+#define WX_PSR_MAC_SWC_AD_L          0x16200
+#define WX_PSR_MAC_SWC_AD_H          0x16204
+#define WX_PSR_MAC_SWC_AD_H_AD(v)       (((v) & 0xFFFF))
+#define WX_PSR_MAC_SWC_AD_H_ADTYPE(v)   (((v) & 0x1) << 30)
+#define WX_PSR_MAC_SWC_AD_H_AV       BIT(31)
+#define WX_PSR_MAC_SWC_VM_L          0x16208
+#define WX_PSR_MAC_SWC_VM_H          0x1620C
+#define WX_PSR_MAC_SWC_IDX           0x16210
+#define WX_CLEAR_VMDQ_ALL            0xFFFFFFFFU
+
+/************************************* ETH MAC *****************************/
+#define WX_MAC_TX_CFG                0x11000
+#define WX_MAC_TX_CFG_TE             BIT(0)
+#define WX_MAC_RX_CFG                0x11004
+#define WX_MAC_RX_CFG_RE             BIT(0)
+#define WX_MAC_RX_CFG_JE             BIT(8)
+#define WX_MAC_PKT_FLT               0x11008
+#define WX_MAC_PKT_FLT_PR            BIT(0) /* promiscuous mode */
+#define WX_MAC_RX_FLOW_CTRL          0x11090
+#define WX_MAC_RX_FLOW_CTRL_RFE      BIT(0) /* receive fc enable */
+#define WX_MMC_CONTROL               0x11800
+#define WX_MMC_CONTROL_RSTONRD       BIT(2) /* reset on read */
+
+/********************************* BAR registers ***************************/
+/* Interrupt Registers */
+#define WX_BME_CTL                   0x12020
+#define WX_PX_MISC_IC                0x100
+#define WX_PX_IMS(_i)                (0x140 + (_i) * 4)
+#define WX_PX_TRANSACTION_PENDING    0x168
+
+/* transmit DMA Registers */
+#define WX_PX_TR_CFG(_i)             (0x03010 + ((_i) * 0x40))
+/* Transmit Config masks */
+#define WX_PX_TR_CFG_ENABLE          BIT(0) /* Ena specific Tx Queue */
+#define WX_PX_TR_CFG_TR_SIZE_SHIFT   1 /* tx desc number per ring */
+#define WX_PX_TR_CFG_SWFLSH          BIT(26) /* Tx Desc. wr-bk flushing */
+#define WX_PX_TR_CFG_WTHRESH_SHIFT   16 /* shift to WTHRESH bits */
+#define WX_PX_TR_CFG_THRE_SHIFT      8
+
+/* Receive DMA Registers */
+#define WX_PX_RR_CFG(_i)             (0x01010 + ((_i) * 0x40))
+/* PX_RR_CFG bit definitions */
+#define WX_PX_RR_CFG_RR_EN           BIT(0)
+
+/* Number of 80 microseconds we wait for PCI Express master disable */
+#define WX_PCI_MASTER_DISABLE_TIMEOUT        80000
+
+/* Bus parameters */
+struct wx_bus_info {
+	u8 func;
+	u16 device;
+};
+
+struct wx_thermal_sensor_data {
+	s16 temp;
+	s16 alarm_thresh;
+	s16 dalarm_thresh;
+};
+
+enum wx_mac_type {
+	wx_mac_unknown = 0,
+	wx_mac_sp,
+	wx_mac_em
+};
+
+struct wx_mac_info {
+	enum wx_mac_type type;
+	bool set_lben;
+	u8 addr[ETH_ALEN];
+	u8 perm_addr[ETH_ALEN];
+	s32 mc_filter_type;
+	u32 mcft_size;
+	u32 num_rar_entries;
+	u32 max_tx_queues;
+	u32 max_rx_queues;
+	struct wx_thermal_sensor_data sensor;
+};
+
+struct wx_addr_filter_info {
+	u32 num_mc_addrs;
+	u32 mta_in_use;
+	bool user_set_promisc;
+};
+
+struct wx_hw {
+	u8 __iomem *hw_addr;
+	struct pci_dev *pdev;
+	struct wx_bus_info bus;
+	struct wx_mac_info mac;
+	struct wx_addr_filter_info addr_ctrl;
+	u16 device_id;
+	u16 vendor_id;
+	u16 subsystem_device_id;
+	u16 subsystem_vendor_id;
+	u8 revision_id;
+	u16 oem_ssid;
+	u16 oem_svid;
+	bool adapter_stopped;
+};
+
+#define WX_INTR_ALL (~0ULL)
+
+/* register operations */
+#define wr32(a, reg, value)	writel((value), ((a)->hw_addr + (reg)))
+#define rd32(a, reg)		readl((a)->hw_addr + (reg))
+
+static inline u32
+rd32m(struct wx_hw *wxhw, u32 reg, u32 mask)
+{
+	u32 val;
+
+	val = rd32(wxhw, reg);
+	return val & mask;
+}
+
+static inline void
+wr32m(struct wx_hw *wxhw, u32 reg, u32 mask, u32 field)
+{
+	u32 val;
+
+	val = rd32(wxhw, reg);
+	val = ((val & ~mask) | (field & mask));
+
+	wr32(wxhw, reg, val);
+}
+
+/* On some domestic CPU platforms, sometimes IO is not synchronized with
+ * flushing memory, here use readl() to flush PCI read and write.
+ */
+#define WX_WRITE_FLUSH(H) rd32(H, WX_MIS_PWR)
+
+#define wx_err(wxhw, fmt, arg...) \
+	dev_err(&(wxhw)->pdev->dev, fmt, ##arg)
+
+#define wx_dbg(wxhw, fmt, arg...) \
+	dev_dbg(&(wxhw)->pdev->dev, fmt, ##arg)
+
+#endif /* _WX_TYPE_H_ */

drivers/net/ethernet/wangxun/txgbe/Makefile

···
 
 obj-$(CONFIG_TXGBE) += txgbe.o
 
-txgbe-objs := txgbe_main.o
+txgbe-objs := txgbe_main.o \
+              txgbe_hw.o

drivers/net/ethernet/wangxun/txgbe/txgbe.h

···
 #ifndef _TXGBE_H_
 #define _TXGBE_H_
 
-#include "txgbe_type.h"
-
 #define TXGBE_MAX_FDIR_INDICES          63
 
 #define TXGBE_MAX_RX_QUEUES   (TXGBE_MAX_FDIR_INDICES + 1)
 #define TXGBE_MAX_TX_QUEUES   (TXGBE_MAX_FDIR_INDICES + 1)
+
+#define TXGBE_SP_MAX_TX_QUEUES  128
+#define TXGBE_SP_MAX_RX_QUEUES  128
+#define TXGBE_SP_RAR_ENTRIES    128
+#define TXGBE_SP_MC_TBL_SIZE    128
+
+struct txgbe_mac_addr {
+	u8 addr[ETH_ALEN];
+	u16 state; /* bitmask */
+	u64 pools;
+};
+
+#define TXGBE_MAC_STATE_DEFAULT         0x1
+#define TXGBE_MAC_STATE_MODIFIED        0x2
+#define TXGBE_MAC_STATE_IN_USE          0x4
 
 /* board specific private data structure */
 struct txgbe_adapter {
···
 	/* OS defined structs */
 	struct net_device *netdev;
 	struct pci_dev *pdev;
+
+	/* structs defined in txgbe_type.h */
+	struct txgbe_hw hw;
+	u16 msg_enable;
+	struct txgbe_mac_addr *mac_table;
 };
 
 extern char txgbe_driver_name[];

drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c

···
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
+
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/string.h>
+#include <linux/iopoll.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+
+#include "../libwx/wx_type.h"
+#include "../libwx/wx_hw.h"
+#include "txgbe_type.h"
+#include "txgbe_hw.h"
+#include "txgbe.h"
+
+/**
+ *  txgbe_init_thermal_sensor_thresh - Inits thermal sensor thresholds
+ *  @hw: pointer to hardware structure
+ *
+ *  Inits the thermal sensor thresholds according to the NVM map
+ *  and save off the threshold and location values into mac.thermal_sensor_data
+ **/
+static void txgbe_init_thermal_sensor_thresh(struct txgbe_hw *hw)
+{
+	struct wx_hw *wxhw = &hw->wxhw;
+	struct wx_thermal_sensor_data *data = &wxhw->mac.sensor;
+
+	memset(data, 0, sizeof(struct wx_thermal_sensor_data));
+
+	/* Only support thermal sensors attached to SP physical port 0 */
+	if (wxhw->bus.func)
+		return;
+
+	wr32(wxhw, TXGBE_TS_CTL, TXGBE_TS_CTL_EVAL_MD);
+
+	wr32(wxhw, WX_TS_INT_EN,
+	     WX_TS_INT_EN_ALARM_INT_EN | WX_TS_INT_EN_DALARM_INT_EN);
+	wr32(wxhw, WX_TS_EN, WX_TS_EN_ENA);
+
+	data->alarm_thresh = 100;
+	wr32(wxhw, WX_TS_ALARM_THRE, 677);
+	data->dalarm_thresh = 90;
+	wr32(wxhw, WX_TS_DALARM_THRE, 614);
+}
+
+static void txgbe_reset_misc(struct txgbe_hw *hw)
+{
+	struct wx_hw *wxhw = &hw->wxhw;
+
+	wx_reset_misc(wxhw);
+	txgbe_init_thermal_sensor_thresh(hw);
+}
+
+/**
+ *  txgbe_reset_hw - Perform hardware reset
+ *  @hw: pointer to hardware structure
+ *
+ *  Resets the hardware by resetting the transmit and receive units, masks
+ *  and clears all interrupts, perform a PHY reset, and perform a link (MAC)
+ *  reset.
+ **/
+int txgbe_reset_hw(struct txgbe_hw *hw)
+{
+	struct wx_hw *wxhw = &hw->wxhw;
+	u32 reset = 0;
+	int status;
+
+	/* Call adapter stop to disable tx/rx and clear interrupts */
+	status = wx_stop_adapter(wxhw);
+	if (status != 0)
+		return status;
+
+	reset = WX_MIS_RST_LAN_RST(wxhw->bus.func);
+	wr32(wxhw, WX_MIS_RST, reset | rd32(wxhw, WX_MIS_RST));
+
+	WX_WRITE_FLUSH(wxhw);
+	usleep_range(10, 100);
+
+	status = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_LAN_SW_RST(wxhw->bus.func));
+	if (status != 0)
+		return status;
+
+	txgbe_reset_misc(hw);
+
+	/* Store the permanent mac address */
+	wx_get_mac_addr(wxhw, wxhw->mac.perm_addr);
+
+	/* Store MAC address from RAR0, clear receive address registers, and
+	 * clear the multicast table.  Also reset num_rar_entries to 128,
+	 * since we modify this value when programming the SAN MAC address.
+	 */
+	wxhw->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES;
+	wx_init_rx_addrs(wxhw);
+
+	pci_set_master(wxhw->pdev);
+
+	return 0;
+}

drivers/net/ethernet/wangxun/txgbe/txgbe_hw.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _TXGBE_HW_H_
+#define _TXGBE_HW_H_
+
+int txgbe_reset_hw(struct txgbe_hw *hw);
+
+#endif /* _TXGBE_HW_H_ */

drivers/net/ethernet/wangxun/txgbe/txgbe_main.c

···
 #include <linux/string.h>
 #include <linux/aer.h>
 #include <linux/etherdevice.h>
+#include <net/ip.h>
 
+#include "../libwx/wx_type.h"
+#include "../libwx/wx_hw.h"
+#include "txgbe_type.h"
+#include "txgbe_hw.h"
 #include "txgbe.h"
 
 char txgbe_driver_name[] = "txgbe";
···
 
 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
 
+static void txgbe_check_minimum_link(struct txgbe_adapter *adapter)
+{
+	struct pci_dev *pdev;
+
+	pdev = adapter->pdev;
+	pcie_print_link_status(pdev);
+}
+
+/**
+ * txgbe_enumerate_functions - Get the number of ports this device has
+ * @adapter: adapter 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 txgbe_adapter *adapter)
+{
+	struct pci_dev *entry, *pdev = adapter->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_sync_mac_table(struct txgbe_adapter *adapter)
+{
+	struct txgbe_hw *hw = &adapter->hw;
+	struct wx_hw *wxhw = &hw->wxhw;
+	int i;
+
+	for (i = 0; i < wxhw->mac.num_rar_entries; i++) {
+		if (adapter->mac_table[i].state & TXGBE_MAC_STATE_MODIFIED) {
+			if (adapter->mac_table[i].state & TXGBE_MAC_STATE_IN_USE) {
+				wx_set_rar(wxhw, i,
+					   adapter->mac_table[i].addr,
+					   adapter->mac_table[i].pools,
+					   WX_PSR_MAC_SWC_AD_H_AV);
+			} else {
+				wx_clear_rar(wxhw, i);
+			}
+			adapter->mac_table[i].state &= ~(TXGBE_MAC_STATE_MODIFIED);
+		}
+	}
+}
+
+/* this function destroys the first RAR entry */
+static void txgbe_mac_set_default_filter(struct txgbe_adapter *adapter,
+					 u8 *addr)
+{
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+
+	memcpy(&adapter->mac_table[0].addr, addr, ETH_ALEN);
+	adapter->mac_table[0].pools = 1ULL;
+	adapter->mac_table[0].state = (TXGBE_MAC_STATE_DEFAULT |
+				       TXGBE_MAC_STATE_IN_USE);
+	wx_set_rar(wxhw, 0, adapter->mac_table[0].addr,
+		   adapter->mac_table[0].pools,
+		   WX_PSR_MAC_SWC_AD_H_AV);
+}
+
+static void txgbe_flush_sw_mac_table(struct txgbe_adapter *adapter)
+{
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+	u32 i;
+
+	for (i = 0; i < wxhw->mac.num_rar_entries; i++) {
+		adapter->mac_table[i].state |= TXGBE_MAC_STATE_MODIFIED;
+		adapter->mac_table[i].state &= ~TXGBE_MAC_STATE_IN_USE;
+		memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
+		adapter->mac_table[i].pools = 0;
+	}
+	txgbe_sync_mac_table(adapter);
+}
+
+static int txgbe_del_mac_filter(struct txgbe_adapter *adapter, u8 *addr, u16 pool)
+{
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+	u32 i;
+
+	if (is_zero_ether_addr(addr))
+		return -EINVAL;
+
+	/* search table for addr, if found, set to 0 and sync */
+	for (i = 0; i < wxhw->mac.num_rar_entries; i++) {
+		if (ether_addr_equal(addr, adapter->mac_table[i].addr)) {
+			if (adapter->mac_table[i].pools & (1ULL << pool)) {
+				adapter->mac_table[i].state |= TXGBE_MAC_STATE_MODIFIED;
+				adapter->mac_table[i].state &= ~TXGBE_MAC_STATE_IN_USE;
+				adapter->mac_table[i].pools &= ~(1ULL << pool);
+				txgbe_sync_mac_table(adapter);
+			}
+			return 0;
+		}
+
+		if (adapter->mac_table[i].pools != (1 << pool))
+			continue;
+		if (!ether_addr_equal(addr, adapter->mac_table[i].addr))
+			continue;
+
+		adapter->mac_table[i].state |= TXGBE_MAC_STATE_MODIFIED;
+		adapter->mac_table[i].state &= ~TXGBE_MAC_STATE_IN_USE;
+		memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
+		adapter->mac_table[i].pools = 0;
+		txgbe_sync_mac_table(adapter);
+		return 0;
+	}
+	return -ENOMEM;
+}
+
+static void txgbe_reset(struct txgbe_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct txgbe_hw *hw = &adapter->hw;
+	u8 old_addr[ETH_ALEN];
+	int err;
+
+	err = txgbe_reset_hw(hw);
+	if (err != 0)
+		dev_err(&adapter->pdev->dev, "Hardware Error: %d\n", err);
+
+	/* do not flush user set addresses */
+	memcpy(old_addr, &adapter->mac_table[0].addr, netdev->addr_len);
+	txgbe_flush_sw_mac_table(adapter);
+	txgbe_mac_set_default_filter(adapter, old_addr);
+}
+
+static void txgbe_disable_device(struct txgbe_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+
+	wx_disable_pcie_master(wxhw);
+	/* disable receives */
+	wx_disable_rx(wxhw);
+
+	netif_carrier_off(netdev);
+	netif_tx_disable(netdev);
+
+	if (wxhw->bus.func < 2)
+		wr32m(wxhw, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wxhw->bus.func), 0);
+	else
+		dev_err(&adapter->pdev->dev,
+			"%s: invalid bus lan id %d\n",
+			__func__, wxhw->bus.func);
+
+	if (!(((wxhw->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
+	      ((wxhw->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
+		/* disable mac transmiter */
+		wr32m(wxhw, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
+	}
+
+	/* Disable the Tx DMA engine */
+	wr32m(wxhw, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
+}
+
+static void txgbe_down(struct txgbe_adapter *adapter)
+{
+	txgbe_disable_device(adapter);
+	txgbe_reset(adapter);
+}
+
+/**
+ * txgbe_sw_init - Initialize general software structures (struct txgbe_adapter)
+ * @adapter: board private structure to initialize
+ **/
+static int txgbe_sw_init(struct txgbe_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	struct txgbe_hw *hw = &adapter->hw;
+	struct wx_hw *wxhw = &hw->wxhw;
+	int err;
+
+	wxhw->hw_addr = adapter->io_addr;
+	wxhw->pdev = pdev;
+
+	/* PCI config space info */
+	err = wx_sw_init(wxhw);
+	if (err < 0) {
+		netif_err(adapter, probe, adapter->netdev,
+			  "read of internal subsystem device id failed\n");
+		return err;
+	}
+
+	switch (wxhw->device_id) {
+	case TXGBE_DEV_ID_SP1000:
+	case TXGBE_DEV_ID_WX1820:
+		wxhw->mac.type = wx_mac_sp;
+		break;
+	default:
+		wxhw->mac.type = wx_mac_unknown;
+		break;
+	}
+
+	wxhw->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES;
+	wxhw->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES;
+	wxhw->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES;
+	wxhw->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE;
+
+	adapter->mac_table = kcalloc(wxhw->mac.num_rar_entries,
+				     sizeof(struct txgbe_mac_addr),
+				     GFP_KERNEL);
+	if (!adapter->mac_table) {
+		netif_err(adapter, probe, adapter->netdev,
+			  "mac_table allocation failed\n");
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+/**
+ * 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)
+{
+	return 0;
+}
+
+/**
+ * txgbe_close_suspend - actions necessary to both suspend and close flows
+ * @adapter: the private adapter struct
+ *
+ * This function should contain the necessary work common to both suspending
+ * and closing of the device.
+ */
+static void txgbe_close_suspend(struct txgbe_adapter *adapter)
+{
+	txgbe_disable_device(adapter);
+}
+
+/**
+ * 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 txgbe_adapter *adapter = netdev_priv(netdev);
+
+	txgbe_down(adapter);
+
+	return 0;
+}
+
 static void txgbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
 {
 	struct txgbe_adapter *adapter = pci_get_drvdata(pdev);
 	struct net_device *netdev = adapter->netdev;
 
 	netif_device_detach(netdev);
+
+	rtnl_lock();
+	if (netif_running(netdev))
+		txgbe_close_suspend(adapter);
+	rtnl_unlock();
 
 	pci_disable_device(pdev);
 }
···
 	}
 }
 
+static netdev_tx_t txgbe_xmit_frame(struct sk_buff *skb,
+				    struct net_device *netdev)
+{
+	return NETDEV_TX_OK;
+}
+
+/**
+ * txgbe_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int txgbe_set_mac(struct net_device *netdev, void *p)
+{
+	struct txgbe_adapter *adapter = netdev_priv(netdev);
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+	struct sockaddr *addr = p;
+	int retval;
+
+	retval = eth_prepare_mac_addr_change(netdev, addr);
+	if (retval)
+		return retval;
+
+	txgbe_del_mac_filter(adapter, wxhw->mac.addr, 0);
+	eth_hw_addr_set(netdev, addr->sa_data);
+	memcpy(wxhw->mac.addr, addr->sa_data, netdev->addr_len);
+
+	txgbe_mac_set_default_filter(adapter, wxhw->mac.addr);
+
+	return 0;
+}
+
+static const struct net_device_ops txgbe_netdev_ops = {
+	.ndo_open               = txgbe_open,
+	.ndo_stop               = txgbe_close,
+	.ndo_start_xmit         = txgbe_xmit_frame,
+	.ndo_validate_addr      = eth_validate_addr,
+	.ndo_set_mac_address    = txgbe_set_mac,
+};
+
 /**
  * txgbe_probe - Device Initialization Routine
  * @pdev: PCI device information struct
···
 		       const struct pci_device_id __always_unused *ent)
 {
 	struct txgbe_adapter *adapter = NULL;
+	struct txgbe_hw *hw = NULL;
+	struct wx_hw *wxhw = NULL;
 	struct net_device *netdev;
-	int err;
+	int err, expected_gts;
 
 	err = pci_enable_device_mem(pdev);
 	if (err)
···
 	adapter = netdev_priv(netdev);
 	adapter->netdev = netdev;
 	adapter->pdev = pdev;
+	hw = &adapter->hw;
+	wxhw = &hw->wxhw;
+	adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
 
 	adapter->io_addr = devm_ioremap(&pdev->dev,
 					pci_resource_start(pdev, 0),
···
 		goto err_pci_release_regions;
 	}
 
+	netdev->netdev_ops = &txgbe_netdev_ops;
+
+	/* setup the private structure */
+	err = txgbe_sw_init(adapter);
+	if (err)
+		goto err_free_mac_table;
+
+	/* check if flash load is done after hw power up */
+	err = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_PERST);
+	if (err)
+		goto err_free_mac_table;
+	err = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_PWRRST);
+	if (err)
+		goto err_free_mac_table;
+
+	err = txgbe_reset_hw(hw);
+	if (err) {
+		dev_err(&pdev->dev, "HW Init failed: %d\n", err);
+		goto err_free_mac_table;
+	}
+
 	netdev->features |= NETIF_F_HIGHDMA;
+
+	eth_hw_addr_set(netdev, wxhw->mac.perm_addr);
+	txgbe_mac_set_default_filter(adapter, wxhw->mac.perm_addr);
+
+	err = register_netdev(netdev);
+	if (err)
+		goto err_free_mac_table;
 
 	pci_set_drvdata(pdev, adapter);
 
+	/* 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(adapter) * 10;
+
+	/* don't check link if we failed to enumerate functions */
+	if (expected_gts > 0)
+		txgbe_check_minimum_link(adapter);
+	else
+		dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n");
+
+	netif_info(adapter, probe, netdev, "%pM\n", netdev->dev_addr);
+
 	return 0;
 
+err_free_mac_table:
+	kfree(adapter->mac_table);
 err_pci_release_regions:
 	pci_disable_pcie_error_reporting(pdev);
 	pci_release_selected_regions(pdev,
···
  **/
 static void txgbe_remove(struct pci_dev *pdev)
 {
+	struct txgbe_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev;
+
+	netdev = adapter->netdev;
+	unregister_netdev(netdev);
+
 	pci_release_selected_regions(pdev,
 				     pci_select_bars(pdev, IORESOURCE_MEM));
+
+	kfree(adapter->mac_table);
 
 	pci_disable_pcie_error_reporting(pdev);
 

drivers/net/ethernet/wangxun/txgbe/txgbe_type.h

···
 #ifndef _TXGBE_TYPE_H_
 #define _TXGBE_TYPE_H_
 
-#include <linux/types.h>
-#include <linux/netdevice.h>
-
-/************ txgbe_register.h ************/
-/* Vendor ID */
-#ifndef PCI_VENDOR_ID_WANGXUN
-#define PCI_VENDOR_ID_WANGXUN                   0x8088
-#endif
-
 /* Device IDs */
 #define TXGBE_DEV_ID_SP1000                     0x1001
 #define TXGBE_DEV_ID_WX1820                     0x2001
···
 #define TXGBE_ID_WX1820_MAC_SGMII               0x2060
 #define TXGBE_ID_MAC_SGMII                      0x60
 
-#define TXGBE_NCSI_SUP                          0x8000
-#define TXGBE_NCSI_MASK                         0x8000
-#define TXGBE_WOL_SUP                           0x4000
-#define TXGBE_WOL_MASK                          0x4000
-#define TXGBE_DEV_MASK                          0xf0
-
 /* Combined interface*/
 #define TXGBE_ID_SFI_XAUI			0x50
 
 /* Revision ID */
 #define TXGBE_SP_MPW  1
+
+/**************** SP Registers ****************************/
+/* chip control Registers */
+#define TXGBE_MIS_PRB_CTL                       0x10010
+#define TXGBE_MIS_PRB_CTL_LAN_UP(_i)            BIT(1 - (_i))
+/* FMGR Registers */
+#define TXGBE_SPI_ILDR_STATUS                   0x10120
+#define TXGBE_SPI_ILDR_STATUS_PERST             BIT(0) /* PCIE_PERST is done */
+#define TXGBE_SPI_ILDR_STATUS_PWRRST            BIT(1) /* Power on reset is done */
+#define TXGBE_SPI_ILDR_STATUS_LAN_SW_RST(_i)    BIT((_i) + 9) /* lan soft reset done */
+
+/* Sensors for PVT(Process Voltage Temperature) */
+#define TXGBE_TS_CTL                            0x10300
+#define TXGBE_TS_CTL_EVAL_MD                    BIT(31)
+
+struct txgbe_hw {
+	struct wx_hw wxhw;
+};
 
 #endif /* _TXGBE_TYPE_H_ */