Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1919 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/amd8111e.c b/drivers/net/ethernet/amd/amd8111e.c
new file mode 100644
index 0000000000..ea6cfc2095
--- /dev/null
+++ b/drivers/net/ethernet/amd/amd8111e.c
@@ -0,0 +1,1919 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/* Advanced  Micro Devices Inc. AMD8111E Linux Network Driver
+ * Copyright (C) 2004 Advanced Micro Devices
+ *
+ * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ]
+ * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c]
+ * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ]
+ * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
+ * Copyright 1993 United States Government as represented by the
+ *	Director, National Security Agency.[ pcnet32.c ]
+ * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ]
+ * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+
+Module Name:
+
+	amd8111e.c
+
+Abstract:
+
+	 AMD8111 based 10/100 Ethernet Controller Driver.
+
+Environment:
+
+	Kernel Mode
+
+Revision History:
+	3.0.0
+	   Initial Revision.
+	3.0.1
+	 1. Dynamic interrupt coalescing.
+	 2. Removed prev_stats.
+	 3. MII support.
+	 4. Dynamic IPG support
+	3.0.2  05/29/2003
+	 1. Bug fix: Fixed failure to send jumbo packets larger than 4k.
+	 2. Bug fix: Fixed VLAN support failure.
+	 3. Bug fix: Fixed receive interrupt coalescing bug.
+	 4. Dynamic IPG support is disabled by default.
+	3.0.3 06/05/2003
+	 1. Bug fix: Fixed failure to close the interface if SMP is enabled.
+	3.0.4 12/09/2003
+	 1. Added set_mac_address routine for bonding driver support.
+	 2. Tested the driver for bonding support
+	 3. Bug fix: Fixed mismach in actual receive buffer length and length
+	    indicated to the h/w.
+	 4. Modified amd8111e_rx() routine to receive all the received packets
+	    in the first interrupt.
+	 5. Bug fix: Corrected  rx_errors  reported in get_stats() function.
+	3.0.5 03/22/2004
+	 1. Added NAPI support
+
+*/
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/compiler.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/if_vlan.h>
+#include <linux/ctype.h>
+#include <linux/crc32.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/io.h>
+#include <asm/byteorder.h>
+#include <linux/uaccess.h>
+
+#if IS_ENABLED(CONFIG_VLAN_8021Q)
+#define AMD8111E_VLAN_TAG_USED 1
+#else
+#define AMD8111E_VLAN_TAG_USED 0
+#endif
+
+#include "amd8111e.h"
+#define MODULE_NAME	"amd8111e"
+MODULE_AUTHOR("Advanced Micro Devices, Inc.");
+MODULE_DESCRIPTION("AMD8111 based 10/100 Ethernet Controller.");
+MODULE_LICENSE("GPL");
+module_param_array(speed_duplex, int, NULL, 0);
+MODULE_PARM_DESC(speed_duplex, "Set device speed and duplex modes, 0: Auto Negotiate, 1: 10Mbps Half Duplex, 2: 10Mbps Full Duplex, 3: 100Mbps Half Duplex, 4: 100Mbps Full Duplex");
+module_param_array(coalesce, bool, NULL, 0);
+MODULE_PARM_DESC(coalesce, "Enable or Disable interrupt coalescing, 1: Enable, 0: Disable");
+module_param_array(dynamic_ipg, bool, NULL, 0);
+MODULE_PARM_DESC(dynamic_ipg, "Enable or Disable dynamic IPG, 1: Enable, 0: Disable");
+
+/* This function will read the PHY registers. */
+static int amd8111e_read_phy(struct amd8111e_priv *lp,
+			     int phy_id, int reg, u32 *val)
+{
+	void __iomem *mmio = lp->mmio;
+	unsigned int reg_val;
+	unsigned int repeat = REPEAT_CNT;
+
+	reg_val = readl(mmio + PHY_ACCESS);
+	while (reg_val & PHY_CMD_ACTIVE)
+		reg_val = readl(mmio + PHY_ACCESS);
+
+	writel(PHY_RD_CMD | ((phy_id & 0x1f) << 21) |
+			   ((reg & 0x1f) << 16), mmio + PHY_ACCESS);
+	do {
+		reg_val = readl(mmio + PHY_ACCESS);
+		udelay(30);  /* It takes 30 us to read/write data */
+	} while (--repeat && (reg_val & PHY_CMD_ACTIVE));
+	if (reg_val & PHY_RD_ERR)
+		goto err_phy_read;
+
+	*val = reg_val & 0xffff;
+	return 0;
+err_phy_read:
+	*val = 0;
+	return -EINVAL;
+
+}
+
+/* This function will write into PHY registers. */
+static int amd8111e_write_phy(struct amd8111e_priv *lp,
+			      int phy_id, int reg, u32 val)
+{
+	unsigned int repeat = REPEAT_CNT;
+	void __iomem *mmio = lp->mmio;
+	unsigned int reg_val;
+
+	reg_val = readl(mmio + PHY_ACCESS);
+	while (reg_val & PHY_CMD_ACTIVE)
+		reg_val = readl(mmio + PHY_ACCESS);
+
+	writel(PHY_WR_CMD | ((phy_id & 0x1f) << 21) |
+			   ((reg & 0x1f) << 16)|val, mmio + PHY_ACCESS);
+
+	do {
+		reg_val = readl(mmio + PHY_ACCESS);
+		udelay(30);  /* It takes 30 us to read/write the data */
+	} while (--repeat && (reg_val & PHY_CMD_ACTIVE));
+
+	if (reg_val & PHY_RD_ERR)
+		goto err_phy_write;
+
+	return 0;
+
+err_phy_write:
+	return -EINVAL;
+
+}
+
+/* This is the mii register read function provided to the mii interface. */
+static int amd8111e_mdio_read(struct net_device *dev, int phy_id, int reg_num)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	unsigned int reg_val;
+
+	amd8111e_read_phy(lp, phy_id, reg_num, &reg_val);
+	return reg_val;
+
+}
+
+/* This is the mii register write function provided to the mii interface. */
+static void amd8111e_mdio_write(struct net_device *dev,
+				int phy_id, int reg_num, int val)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+
+	amd8111e_write_phy(lp, phy_id, reg_num, val);
+}
+
+/* This function will set PHY speed. During initialization sets
+ * the original speed to 100 full
+ */
+static void amd8111e_set_ext_phy(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	u32 bmcr, advert, tmp;
+
+	/* Determine mii register values to set the speed */
+	advert = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_ADVERTISE);
+	tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
+	switch (lp->ext_phy_option) {
+	default:
+	case SPEED_AUTONEG: /* advertise all values */
+		tmp |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
+			ADVERTISE_100HALF | ADVERTISE_100FULL);
+		break;
+	case SPEED10_HALF:
+		tmp |= ADVERTISE_10HALF;
+		break;
+	case SPEED10_FULL:
+		tmp |= ADVERTISE_10FULL;
+		break;
+	case SPEED100_HALF:
+		tmp |= ADVERTISE_100HALF;
+		break;
+	case SPEED100_FULL:
+		tmp |= ADVERTISE_100FULL;
+		break;
+	}
+
+	if(advert != tmp)
+		amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_ADVERTISE, tmp);
+	/* Restart auto negotiation */
+	bmcr = amd8111e_mdio_read(dev, lp->ext_phy_addr, MII_BMCR);
+	bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+	amd8111e_mdio_write(dev, lp->ext_phy_addr, MII_BMCR, bmcr);
+
+}
+
+/* This function will unmap skb->data space and will free
+ * all transmit and receive skbuffs.
+ */
+static int amd8111e_free_skbs(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	struct sk_buff *rx_skbuff;
+	int i;
+
+	/* Freeing transmit skbs */
+	for (i = 0; i < NUM_TX_BUFFERS; i++) {
+		if (lp->tx_skbuff[i]) {
+			dma_unmap_single(&lp->pci_dev->dev,
+					 lp->tx_dma_addr[i],
+					 lp->tx_skbuff[i]->len, DMA_TO_DEVICE);
+			dev_kfree_skb(lp->tx_skbuff[i]);
+			lp->tx_skbuff[i] = NULL;
+			lp->tx_dma_addr[i] = 0;
+		}
+	}
+	/* Freeing previously allocated receive buffers */
+	for (i = 0; i < NUM_RX_BUFFERS; i++) {
+		rx_skbuff = lp->rx_skbuff[i];
+		if (rx_skbuff) {
+			dma_unmap_single(&lp->pci_dev->dev,
+					 lp->rx_dma_addr[i],
+					 lp->rx_buff_len - 2, DMA_FROM_DEVICE);
+			dev_kfree_skb(lp->rx_skbuff[i]);
+			lp->rx_skbuff[i] = NULL;
+			lp->rx_dma_addr[i] = 0;
+		}
+	}
+
+	return 0;
+}
+
+/* This will set the receive buffer length corresponding
+ * to the mtu size of networkinterface.
+ */
+static inline void amd8111e_set_rx_buff_len(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	unsigned int mtu = dev->mtu;
+
+	if (mtu > ETH_DATA_LEN) {
+		/* MTU + ethernet header + FCS
+		 * + optional VLAN tag + skb reserve space 2
+		 */
+		lp->rx_buff_len = mtu + ETH_HLEN + 10;
+		lp->options |= OPTION_JUMBO_ENABLE;
+	} else {
+		lp->rx_buff_len = PKT_BUFF_SZ;
+		lp->options &= ~OPTION_JUMBO_ENABLE;
+	}
+}
+
+/* This function will free all the previously allocated buffers,
+ * determine new receive buffer length  and will allocate new receive buffers.
+ * This function also allocates and initializes both the transmitter
+ * and receive hardware descriptors.
+ */
+static int amd8111e_init_ring(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int i;
+
+	lp->rx_idx = lp->tx_idx = 0;
+	lp->tx_complete_idx = 0;
+	lp->tx_ring_idx = 0;
+
+
+	if (lp->opened)
+		/* Free previously allocated transmit and receive skbs */
+		amd8111e_free_skbs(dev);
+
+	else {
+		/* allocate the tx and rx descriptors */
+		lp->tx_ring = dma_alloc_coherent(&lp->pci_dev->dev,
+			sizeof(struct amd8111e_tx_dr) * NUM_TX_RING_DR,
+			&lp->tx_ring_dma_addr, GFP_ATOMIC);
+		if (!lp->tx_ring)
+			goto err_no_mem;
+
+		lp->rx_ring = dma_alloc_coherent(&lp->pci_dev->dev,
+			sizeof(struct amd8111e_rx_dr) * NUM_RX_RING_DR,
+			&lp->rx_ring_dma_addr, GFP_ATOMIC);
+		if (!lp->rx_ring)
+			goto err_free_tx_ring;
+	}
+
+	/* Set new receive buff size */
+	amd8111e_set_rx_buff_len(dev);
+
+	/* Allocating receive  skbs */
+	for (i = 0; i < NUM_RX_BUFFERS; i++) {
+
+		lp->rx_skbuff[i] = netdev_alloc_skb(dev, lp->rx_buff_len);
+		if (!lp->rx_skbuff[i]) {
+			/* Release previos allocated skbs */
+			for (--i; i >= 0; i--)
+				dev_kfree_skb(lp->rx_skbuff[i]);
+			goto err_free_rx_ring;
+		}
+		skb_reserve(lp->rx_skbuff[i], 2);
+	}
+        /* Initilaizing receive descriptors */
+	for (i = 0; i < NUM_RX_BUFFERS; i++) {
+		lp->rx_dma_addr[i] = dma_map_single(&lp->pci_dev->dev,
+						    lp->rx_skbuff[i]->data,
+						    lp->rx_buff_len - 2,
+						    DMA_FROM_DEVICE);
+
+		lp->rx_ring[i].buff_phy_addr = cpu_to_le32(lp->rx_dma_addr[i]);
+		lp->rx_ring[i].buff_count = cpu_to_le16(lp->rx_buff_len-2);
+		wmb();
+		lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT);
+	}
+
+	/* Initializing transmit descriptors */
+	for (i = 0; i < NUM_TX_RING_DR; i++) {
+		lp->tx_ring[i].buff_phy_addr = 0;
+		lp->tx_ring[i].tx_flags = 0;
+		lp->tx_ring[i].buff_count = 0;
+	}
+
+	return 0;
+
+err_free_rx_ring:
+
+	dma_free_coherent(&lp->pci_dev->dev,
+			  sizeof(struct amd8111e_rx_dr) * NUM_RX_RING_DR,
+			  lp->rx_ring, lp->rx_ring_dma_addr);
+
+err_free_tx_ring:
+
+	dma_free_coherent(&lp->pci_dev->dev,
+			  sizeof(struct amd8111e_tx_dr) * NUM_TX_RING_DR,
+			  lp->tx_ring, lp->tx_ring_dma_addr);
+
+err_no_mem:
+	return -ENOMEM;
+}
+
+/* This function will set the interrupt coalescing according
+ * to the input arguments
+ */
+static int amd8111e_set_coalesce(struct net_device *dev, enum coal_mode cmod)
+{
+	unsigned int timeout;
+	unsigned int event_count;
+
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	void __iomem *mmio = lp->mmio;
+	struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
+
+
+	switch(cmod)
+	{
+		case RX_INTR_COAL :
+			timeout = coal_conf->rx_timeout;
+			event_count = coal_conf->rx_event_count;
+			if (timeout > MAX_TIMEOUT ||
+			    event_count > MAX_EVENT_COUNT)
+				return -EINVAL;
+
+			timeout = timeout * DELAY_TIMER_CONV;
+			writel(VAL0|STINTEN, mmio+INTEN0);
+			writel((u32)DLY_INT_A_R0 | (event_count << 16) |
+				timeout, mmio + DLY_INT_A);
+			break;
+
+		case TX_INTR_COAL:
+			timeout = coal_conf->tx_timeout;
+			event_count = coal_conf->tx_event_count;
+			if (timeout > MAX_TIMEOUT ||
+			    event_count > MAX_EVENT_COUNT)
+				return -EINVAL;
+
+
+			timeout = timeout * DELAY_TIMER_CONV;
+			writel(VAL0 | STINTEN, mmio + INTEN0);
+			writel((u32)DLY_INT_B_T0 | (event_count << 16) |
+				timeout, mmio + DLY_INT_B);
+			break;
+
+		case DISABLE_COAL:
+			writel(0, mmio + STVAL);
+			writel(STINTEN, mmio + INTEN0);
+			writel(0, mmio + DLY_INT_B);
+			writel(0, mmio + DLY_INT_A);
+			break;
+		 case ENABLE_COAL:
+		       /* Start the timer */
+			writel((u32)SOFT_TIMER_FREQ, mmio + STVAL); /* 0.5 sec */
+			writel(VAL0 | STINTEN, mmio + INTEN0);
+			break;
+		default:
+			break;
+
+   }
+	return 0;
+
+}
+
+/* This function initializes the device registers  and starts the device. */
+static int amd8111e_restart(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	void __iomem *mmio = lp->mmio;
+	int i, reg_val;
+
+	/* stop the chip */
+	writel(RUN, mmio + CMD0);
+
+	if (amd8111e_init_ring(dev))
+		return -ENOMEM;
+
+	/* enable the port manager and set auto negotiation always */
+	writel((u32)VAL1 | EN_PMGR, mmio + CMD3);
+	writel((u32)XPHYANE | XPHYRST, mmio + CTRL2);
+
+	amd8111e_set_ext_phy(dev);
+
+	/* set control registers */
+	reg_val = readl(mmio + CTRL1);
+	reg_val &= ~XMTSP_MASK;
+	writel(reg_val | XMTSP_128 | CACHE_ALIGN, mmio + CTRL1);
+
+	/* enable interrupt */
+	writel(APINT5EN | APINT4EN | APINT3EN | APINT2EN | APINT1EN |
+		APINT0EN | MIIPDTINTEN | MCCIINTEN | MCCINTEN | MREINTEN |
+		SPNDINTEN | MPINTEN | SINTEN | STINTEN, mmio + INTEN0);
+
+	writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0);
+
+	/* initialize tx and rx ring base addresses */
+	writel((u32)lp->tx_ring_dma_addr, mmio + XMT_RING_BASE_ADDR0);
+	writel((u32)lp->rx_ring_dma_addr, mmio + RCV_RING_BASE_ADDR0);
+
+	writew((u32)NUM_TX_RING_DR, mmio + XMT_RING_LEN0);
+	writew((u16)NUM_RX_RING_DR, mmio + RCV_RING_LEN0);
+
+	/* set default IPG to 96 */
+	writew((u32)DEFAULT_IPG, mmio + IPG);
+	writew((u32)(DEFAULT_IPG-IFS1_DELTA), mmio + IFS1);
+
+	if (lp->options & OPTION_JUMBO_ENABLE) {
+		writel((u32)VAL2|JUMBO, mmio + CMD3);
+		/* Reset REX_UFLO */
+		writel(REX_UFLO, mmio + CMD2);
+		/* Should not set REX_UFLO for jumbo frames */
+		writel(VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2);
+	} else {
+		writel(VAL0 | APAD_XMT | REX_RTRY | REX_UFLO, mmio + CMD2);
+		writel((u32)JUMBO, mmio + CMD3);
+	}
+
+#if AMD8111E_VLAN_TAG_USED
+	writel((u32)VAL2 | VSIZE | VL_TAG_DEL, mmio + CMD3);
+#endif
+	writel(VAL0 | APAD_XMT | REX_RTRY, mmio + CMD2);
+
+	/* Setting the MAC address to the device */
+	for (i = 0; i < ETH_ALEN; i++)
+		writeb(dev->dev_addr[i], mmio + PADR + i);
+
+	/* Enable interrupt coalesce */
+	if (lp->options & OPTION_INTR_COAL_ENABLE) {
+		netdev_info(dev, "Interrupt Coalescing Enabled.\n");
+		amd8111e_set_coalesce(dev, ENABLE_COAL);
+	}
+
+	/* set RUN bit to start the chip */
+	writel(VAL2 | RDMD0, mmio + CMD0);
+	writel(VAL0 | INTREN | RUN, mmio + CMD0);
+
+	/* To avoid PCI posting bug */
+	readl(mmio+CMD0);
+	return 0;
+}
+
+/* This function clears necessary the device registers. */
+static void amd8111e_init_hw_default(struct amd8111e_priv *lp)
+{
+	unsigned int reg_val;
+	unsigned int logic_filter[2] = {0,};
+	void __iomem *mmio = lp->mmio;
+
+
+	/* stop the chip */
+	writel(RUN, mmio + CMD0);
+
+	/* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */
+	writew( 0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0);
+
+	/* Clear RCV_RING_BASE_ADDR */
+	writel(0, mmio + RCV_RING_BASE_ADDR0);
+
+	/* Clear XMT_RING_BASE_ADDR */
+	writel(0, mmio + XMT_RING_BASE_ADDR0);
+	writel(0, mmio + XMT_RING_BASE_ADDR1);
+	writel(0, mmio + XMT_RING_BASE_ADDR2);
+	writel(0, mmio + XMT_RING_BASE_ADDR3);
+
+	/* Clear CMD0  */
+	writel(CMD0_CLEAR, mmio + CMD0);
+
+	/* Clear CMD2 */
+	writel(CMD2_CLEAR, mmio + CMD2);
+
+	/* Clear CMD7 */
+	writel(CMD7_CLEAR, mmio + CMD7);
+
+	/* Clear DLY_INT_A and DLY_INT_B */
+	writel(0x0, mmio + DLY_INT_A);
+	writel(0x0, mmio + DLY_INT_B);
+
+	/* Clear FLOW_CONTROL */
+	writel(0x0, mmio + FLOW_CONTROL);
+
+	/* Clear INT0  write 1 to clear register */
+	reg_val = readl(mmio + INT0);
+	writel(reg_val, mmio + INT0);
+
+	/* Clear STVAL */
+	writel(0x0, mmio + STVAL);
+
+	/* Clear INTEN0 */
+	writel(INTEN0_CLEAR, mmio + INTEN0);
+
+	/* Clear LADRF */
+	writel(0x0, mmio + LADRF);
+
+	/* Set SRAM_SIZE & SRAM_BOUNDARY registers  */
+	writel(0x80010, mmio + SRAM_SIZE);
+
+	/* Clear RCV_RING0_LEN */
+	writel(0x0, mmio + RCV_RING_LEN0);
+
+	/* Clear XMT_RING0/1/2/3_LEN */
+	writel(0x0, mmio +  XMT_RING_LEN0);
+	writel(0x0, mmio +  XMT_RING_LEN1);
+	writel(0x0, mmio +  XMT_RING_LEN2);
+	writel(0x0, mmio +  XMT_RING_LEN3);
+
+	/* Clear XMT_RING_LIMIT */
+	writel(0x0, mmio + XMT_RING_LIMIT);
+
+	/* Clear MIB */
+	writew(MIB_CLEAR, mmio + MIB_ADDR);
+
+	/* Clear LARF */
+	amd8111e_writeq(*(u64 *)logic_filter, mmio + LADRF);
+
+	/* SRAM_SIZE register */
+	reg_val = readl(mmio + SRAM_SIZE);
+
+	if (lp->options & OPTION_JUMBO_ENABLE)
+		writel(VAL2 | JUMBO, mmio + CMD3);
+#if AMD8111E_VLAN_TAG_USED
+	writel(VAL2 | VSIZE | VL_TAG_DEL, mmio + CMD3);
+#endif
+	/* Set default value to CTRL1 Register */
+	writel(CTRL1_DEFAULT, mmio + CTRL1);
+
+	/* To avoid PCI posting bug */
+	readl(mmio + CMD2);
+
+}
+
+/* This function disables the interrupt and clears all the pending
+ * interrupts in INT0
+ */
+static void amd8111e_disable_interrupt(struct amd8111e_priv *lp)
+{
+	u32 intr0;
+
+	/* Disable interrupt */
+	writel(INTREN, lp->mmio + CMD0);
+
+	/* Clear INT0 */
+	intr0 = readl(lp->mmio + INT0);
+	writel(intr0, lp->mmio + INT0);
+
+	/* To avoid PCI posting bug */
+	readl(lp->mmio + INT0);
+
+}
+
+/* This function stops the chip. */
+static void amd8111e_stop_chip(struct amd8111e_priv *lp)
+{
+	writel(RUN, lp->mmio + CMD0);
+
+	/* To avoid PCI posting bug */
+	readl(lp->mmio + CMD0);
+}
+
+/* This function frees the  transmiter and receiver descriptor rings. */
+static void amd8111e_free_ring(struct amd8111e_priv *lp)
+{
+	/* Free transmit and receive descriptor rings */
+	if (lp->rx_ring) {
+		dma_free_coherent(&lp->pci_dev->dev,
+				  sizeof(struct amd8111e_rx_dr) * NUM_RX_RING_DR,
+				  lp->rx_ring, lp->rx_ring_dma_addr);
+		lp->rx_ring = NULL;
+	}
+
+	if (lp->tx_ring) {
+		dma_free_coherent(&lp->pci_dev->dev,
+				  sizeof(struct amd8111e_tx_dr) * NUM_TX_RING_DR,
+				  lp->tx_ring, lp->tx_ring_dma_addr);
+
+		lp->tx_ring = NULL;
+	}
+
+}
+
+/* This function will free all the transmit skbs that are actually
+ * transmitted by the device. It will check the ownership of the
+ * skb before freeing the skb.
+ */
+static int amd8111e_tx(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int tx_index;
+	int status;
+	/* Complete all the transmit packet */
+	while (lp->tx_complete_idx != lp->tx_idx) {
+		tx_index =  lp->tx_complete_idx & TX_RING_DR_MOD_MASK;
+		status = le16_to_cpu(lp->tx_ring[tx_index].tx_flags);
+
+		if (status & OWN_BIT)
+			break;	/* It still hasn't been Txed */
+
+		lp->tx_ring[tx_index].buff_phy_addr = 0;
+
+		/* We must free the original skb */
+		if (lp->tx_skbuff[tx_index]) {
+			dma_unmap_single(&lp->pci_dev->dev,
+					 lp->tx_dma_addr[tx_index],
+					 lp->tx_skbuff[tx_index]->len,
+					 DMA_TO_DEVICE);
+			dev_consume_skb_irq(lp->tx_skbuff[tx_index]);
+			lp->tx_skbuff[tx_index] = NULL;
+			lp->tx_dma_addr[tx_index] = 0;
+		}
+		lp->tx_complete_idx++;
+		/*COAL update tx coalescing parameters */
+		lp->coal_conf.tx_packets++;
+		lp->coal_conf.tx_bytes +=
+			le16_to_cpu(lp->tx_ring[tx_index].buff_count);
+
+		if (netif_queue_stopped(dev) &&
+			lp->tx_complete_idx > lp->tx_idx - NUM_TX_BUFFERS + 2) {
+			/* The ring is no longer full, clear tbusy. */
+			/* lp->tx_full = 0; */
+			netif_wake_queue(dev);
+		}
+	}
+	return 0;
+}
+
+/* This function handles the driver receive operation in polling mode */
+static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
+{
+	struct amd8111e_priv *lp = container_of(napi, struct amd8111e_priv, napi);
+	struct net_device *dev = lp->amd8111e_net_dev;
+	int rx_index = lp->rx_idx & RX_RING_DR_MOD_MASK;
+	void __iomem *mmio = lp->mmio;
+	struct sk_buff *skb, *new_skb;
+	int min_pkt_len, status;
+	int num_rx_pkt = 0;
+	short pkt_len;
+#if AMD8111E_VLAN_TAG_USED
+	short vtag;
+#endif
+
+	while (num_rx_pkt < budget) {
+		status = le16_to_cpu(lp->rx_ring[rx_index].rx_flags);
+		if (status & OWN_BIT)
+			break;
+
+		/* There is a tricky error noted by John Murphy,
+		 * <murf@perftech.com> to Russ Nelson: Even with
+		 * full-sized * buffers it's possible for a
+		 * jabber packet to use two buffers, with only
+		 * the last correctly noting the error.
+		 */
+		if (status & ERR_BIT) {
+			/* resetting flags */
+			lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
+			goto err_next_pkt;
+		}
+		/* check for STP and ENP */
+		if (!((status & STP_BIT) && (status & ENP_BIT))) {
+			/* resetting flags */
+			lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
+			goto err_next_pkt;
+		}
+		pkt_len = le16_to_cpu(lp->rx_ring[rx_index].msg_count) - 4;
+
+#if AMD8111E_VLAN_TAG_USED
+		vtag = status & TT_MASK;
+		/* MAC will strip vlan tag */
+		if (vtag != 0)
+			min_pkt_len = MIN_PKT_LEN - 4;
+			else
+#endif
+			min_pkt_len = MIN_PKT_LEN;
+
+		if (pkt_len < min_pkt_len) {
+			lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
+			lp->drv_rx_errors++;
+			goto err_next_pkt;
+		}
+		new_skb = netdev_alloc_skb(dev, lp->rx_buff_len);
+		if (!new_skb) {
+			/* if allocation fail,
+			 * ignore that pkt and go to next one
+			 */
+			lp->rx_ring[rx_index].rx_flags &= RESET_RX_FLAGS;
+			lp->drv_rx_errors++;
+			goto err_next_pkt;
+		}
+
+		skb_reserve(new_skb, 2);
+		skb = lp->rx_skbuff[rx_index];
+		dma_unmap_single(&lp->pci_dev->dev, lp->rx_dma_addr[rx_index],
+				 lp->rx_buff_len - 2, DMA_FROM_DEVICE);
+		skb_put(skb, pkt_len);
+		lp->rx_skbuff[rx_index] = new_skb;
+		lp->rx_dma_addr[rx_index] = dma_map_single(&lp->pci_dev->dev,
+							   new_skb->data,
+							   lp->rx_buff_len - 2,
+							   DMA_FROM_DEVICE);
+
+		skb->protocol = eth_type_trans(skb, dev);
+
+#if AMD8111E_VLAN_TAG_USED
+		if (vtag == TT_VLAN_TAGGED) {
+			u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
+		}
+#endif
+		napi_gro_receive(napi, skb);
+		/* COAL update rx coalescing parameters */
+		lp->coal_conf.rx_packets++;
+		lp->coal_conf.rx_bytes += pkt_len;
+		num_rx_pkt++;
+
+err_next_pkt:
+		lp->rx_ring[rx_index].buff_phy_addr
+			= cpu_to_le32(lp->rx_dma_addr[rx_index]);
+		lp->rx_ring[rx_index].buff_count =
+			cpu_to_le16(lp->rx_buff_len-2);
+		wmb();
+		lp->rx_ring[rx_index].rx_flags |= cpu_to_le16(OWN_BIT);
+		rx_index = (++lp->rx_idx) & RX_RING_DR_MOD_MASK;
+	}
+
+	if (num_rx_pkt < budget && napi_complete_done(napi, num_rx_pkt)) {
+		unsigned long flags;
+
+		/* Receive descriptor is empty now */
+		spin_lock_irqsave(&lp->lock, flags);
+		writel(VAL0|RINTEN0, mmio + INTEN0);
+		writel(VAL2 | RDMD0, mmio + CMD0);
+		spin_unlock_irqrestore(&lp->lock, flags);
+	}
+
+	return num_rx_pkt;
+}
+
+/* This function will indicate the link status to the kernel. */
+static int amd8111e_link_change(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int status0, speed;
+
+	/* read the link change */
+	status0 = readl(lp->mmio + STAT0);
+
+	if (status0 & LINK_STATS) {
+		if (status0 & AUTONEG_COMPLETE)
+			lp->link_config.autoneg = AUTONEG_ENABLE;
+		else
+			lp->link_config.autoneg = AUTONEG_DISABLE;
+
+		if (status0 & FULL_DPLX)
+			lp->link_config.duplex = DUPLEX_FULL;
+		else
+			lp->link_config.duplex = DUPLEX_HALF;
+		speed = (status0 & SPEED_MASK) >> 7;
+		if (speed == PHY_SPEED_10)
+			lp->link_config.speed = SPEED_10;
+		else if (speed == PHY_SPEED_100)
+			lp->link_config.speed = SPEED_100;
+
+		netdev_info(dev, "Link is Up. Speed is %s Mbps %s Duplex\n",
+			    (lp->link_config.speed == SPEED_100) ?
+							"100" : "10",
+			    (lp->link_config.duplex == DUPLEX_FULL) ?
+							"Full" : "Half");
+
+		netif_carrier_on(dev);
+	} else {
+		lp->link_config.speed = SPEED_INVALID;
+		lp->link_config.duplex = DUPLEX_INVALID;
+		lp->link_config.autoneg = AUTONEG_INVALID;
+		netdev_info(dev, "Link is Down.\n");
+		netif_carrier_off(dev);
+	}
+
+	return 0;
+}
+
+/* This function reads the mib counters. */
+static int amd8111e_read_mib(void __iomem *mmio, u8 MIB_COUNTER)
+{
+	unsigned int  status;
+	unsigned  int data;
+	unsigned int repeat = REPEAT_CNT;
+
+	writew(MIB_RD_CMD | MIB_COUNTER, mmio + MIB_ADDR);
+	do {
+		status = readw(mmio + MIB_ADDR);
+		udelay(2);	/* controller takes MAX 2 us to get mib data */
+	}
+	while (--repeat && (status & MIB_CMD_ACTIVE));
+
+	data = readl(mmio + MIB_DATA);
+	return data;
+}
+
+/* This function reads the mib registers and returns the hardware statistics.
+ * It updates previous internal driver statistics with new values.
+ */
+static struct net_device_stats *amd8111e_get_stats(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	void __iomem *mmio = lp->mmio;
+	unsigned long flags;
+	struct net_device_stats *new_stats = &dev->stats;
+
+	if (!lp->opened)
+		return new_stats;
+	spin_lock_irqsave(&lp->lock, flags);
+
+	/* stats.rx_packets */
+	new_stats->rx_packets = amd8111e_read_mib(mmio, rcv_broadcast_pkts)+
+				amd8111e_read_mib(mmio, rcv_multicast_pkts)+
+				amd8111e_read_mib(mmio, rcv_unicast_pkts);
+
+	/* stats.tx_packets */
+	new_stats->tx_packets = amd8111e_read_mib(mmio, xmt_packets);
+
+	/*stats.rx_bytes */
+	new_stats->rx_bytes = amd8111e_read_mib(mmio, rcv_octets);
+
+	/* stats.tx_bytes */
+	new_stats->tx_bytes = amd8111e_read_mib(mmio, xmt_octets);
+
+	/* stats.rx_errors */
+	/* hw errors + errors driver reported */
+	new_stats->rx_errors = amd8111e_read_mib(mmio, rcv_undersize_pkts)+
+				amd8111e_read_mib(mmio, rcv_fragments)+
+				amd8111e_read_mib(mmio, rcv_jabbers)+
+				amd8111e_read_mib(mmio, rcv_alignment_errors)+
+				amd8111e_read_mib(mmio, rcv_fcs_errors)+
+				amd8111e_read_mib(mmio, rcv_miss_pkts)+
+				lp->drv_rx_errors;
+
+	/* stats.tx_errors */
+	new_stats->tx_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
+
+	/* stats.rx_dropped*/
+	new_stats->rx_dropped = amd8111e_read_mib(mmio, rcv_miss_pkts);
+
+	/* stats.tx_dropped*/
+	new_stats->tx_dropped = amd8111e_read_mib(mmio,  xmt_underrun_pkts);
+
+	/* stats.multicast*/
+	new_stats->multicast = amd8111e_read_mib(mmio, rcv_multicast_pkts);
+
+	/* stats.collisions*/
+	new_stats->collisions = amd8111e_read_mib(mmio, xmt_collisions);
+
+	/* stats.rx_length_errors*/
+	new_stats->rx_length_errors =
+		amd8111e_read_mib(mmio, rcv_undersize_pkts)+
+		amd8111e_read_mib(mmio, rcv_oversize_pkts);
+
+	/* stats.rx_over_errors*/
+	new_stats->rx_over_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
+
+	/* stats.rx_crc_errors*/
+	new_stats->rx_crc_errors = amd8111e_read_mib(mmio, rcv_fcs_errors);
+
+	/* stats.rx_frame_errors*/
+	new_stats->rx_frame_errors =
+		amd8111e_read_mib(mmio, rcv_alignment_errors);
+
+	/* stats.rx_fifo_errors */
+	new_stats->rx_fifo_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
+
+	/* stats.rx_missed_errors */
+	new_stats->rx_missed_errors = amd8111e_read_mib(mmio, rcv_miss_pkts);
+
+	/* stats.tx_aborted_errors*/
+	new_stats->tx_aborted_errors =
+		amd8111e_read_mib(mmio, xmt_excessive_collision);
+
+	/* stats.tx_carrier_errors*/
+	new_stats->tx_carrier_errors =
+		amd8111e_read_mib(mmio, xmt_loss_carrier);
+
+	/* stats.tx_fifo_errors*/
+	new_stats->tx_fifo_errors = amd8111e_read_mib(mmio, xmt_underrun_pkts);
+
+	/* stats.tx_window_errors*/
+	new_stats->tx_window_errors =
+		amd8111e_read_mib(mmio, xmt_late_collision);
+
+	/* Reset the mibs for collecting new statistics */
+	/* writew(MIB_CLEAR, mmio + MIB_ADDR);*/
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return new_stats;
+}
+
+/* This function recalculate the interrupt coalescing  mode on every interrupt
+ * according to the datarate and the packet rate.
+ */
+static int amd8111e_calc_coalesce(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	struct amd8111e_coalesce_conf *coal_conf = &lp->coal_conf;
+	int tx_pkt_rate;
+	int rx_pkt_rate;
+	int tx_data_rate;
+	int rx_data_rate;
+	int rx_pkt_size;
+	int tx_pkt_size;
+
+	tx_pkt_rate = coal_conf->tx_packets - coal_conf->tx_prev_packets;
+	coal_conf->tx_prev_packets =  coal_conf->tx_packets;
+
+	tx_data_rate = coal_conf->tx_bytes - coal_conf->tx_prev_bytes;
+	coal_conf->tx_prev_bytes =  coal_conf->tx_bytes;
+
+	rx_pkt_rate = coal_conf->rx_packets - coal_conf->rx_prev_packets;
+	coal_conf->rx_prev_packets =  coal_conf->rx_packets;
+
+	rx_data_rate = coal_conf->rx_bytes - coal_conf->rx_prev_bytes;
+	coal_conf->rx_prev_bytes =  coal_conf->rx_bytes;
+
+	if (rx_pkt_rate < 800) {
+		if (coal_conf->rx_coal_type != NO_COALESCE) {
+
+			coal_conf->rx_timeout = 0x0;
+			coal_conf->rx_event_count = 0;
+			amd8111e_set_coalesce(dev, RX_INTR_COAL);
+			coal_conf->rx_coal_type = NO_COALESCE;
+		}
+	} else {
+
+		rx_pkt_size = rx_data_rate/rx_pkt_rate;
+		if (rx_pkt_size < 128) {
+			if (coal_conf->rx_coal_type != NO_COALESCE) {
+
+				coal_conf->rx_timeout = 0;
+				coal_conf->rx_event_count = 0;
+				amd8111e_set_coalesce(dev, RX_INTR_COAL);
+				coal_conf->rx_coal_type = NO_COALESCE;
+			}
+
+		} else if ((rx_pkt_size >= 128) && (rx_pkt_size < 512)) {
+
+			if (coal_conf->rx_coal_type !=  LOW_COALESCE) {
+				coal_conf->rx_timeout = 1;
+				coal_conf->rx_event_count = 4;
+				amd8111e_set_coalesce(dev, RX_INTR_COAL);
+				coal_conf->rx_coal_type = LOW_COALESCE;
+			}
+		} else if ((rx_pkt_size >= 512) && (rx_pkt_size < 1024)) {
+
+			if (coal_conf->rx_coal_type != MEDIUM_COALESCE) {
+				coal_conf->rx_timeout = 1;
+				coal_conf->rx_event_count = 4;
+				amd8111e_set_coalesce(dev, RX_INTR_COAL);
+				coal_conf->rx_coal_type = MEDIUM_COALESCE;
+			}
+
+		} else if (rx_pkt_size >= 1024) {
+
+			if (coal_conf->rx_coal_type !=  HIGH_COALESCE) {
+				coal_conf->rx_timeout = 2;
+				coal_conf->rx_event_count = 3;
+				amd8111e_set_coalesce(dev, RX_INTR_COAL);
+				coal_conf->rx_coal_type = HIGH_COALESCE;
+			}
+		}
+	}
+	/* NOW FOR TX INTR COALESC */
+	if (tx_pkt_rate < 800) {
+		if (coal_conf->tx_coal_type != NO_COALESCE) {
+
+			coal_conf->tx_timeout = 0x0;
+			coal_conf->tx_event_count = 0;
+			amd8111e_set_coalesce(dev, TX_INTR_COAL);
+			coal_conf->tx_coal_type = NO_COALESCE;
+		}
+	} else {
+
+		tx_pkt_size = tx_data_rate/tx_pkt_rate;
+		if (tx_pkt_size < 128) {
+
+			if (coal_conf->tx_coal_type != NO_COALESCE) {
+
+				coal_conf->tx_timeout = 0;
+				coal_conf->tx_event_count = 0;
+				amd8111e_set_coalesce(dev, TX_INTR_COAL);
+				coal_conf->tx_coal_type = NO_COALESCE;
+			}
+
+		} else if ((tx_pkt_size >= 128) && (tx_pkt_size < 512)) {
+
+			if (coal_conf->tx_coal_type != LOW_COALESCE) {
+				coal_conf->tx_timeout = 1;
+				coal_conf->tx_event_count = 2;
+				amd8111e_set_coalesce(dev, TX_INTR_COAL);
+				coal_conf->tx_coal_type = LOW_COALESCE;
+
+			}
+		} else if ((tx_pkt_size >= 512) && (tx_pkt_size < 1024)) {
+
+			if (coal_conf->tx_coal_type != MEDIUM_COALESCE) {
+				coal_conf->tx_timeout = 2;
+				coal_conf->tx_event_count = 5;
+				amd8111e_set_coalesce(dev, TX_INTR_COAL);
+				coal_conf->tx_coal_type = MEDIUM_COALESCE;
+			}
+		} else if (tx_pkt_size >= 1024) {
+			if (coal_conf->tx_coal_type != HIGH_COALESCE) {
+				coal_conf->tx_timeout = 4;
+				coal_conf->tx_event_count = 8;
+				amd8111e_set_coalesce(dev, TX_INTR_COAL);
+				coal_conf->tx_coal_type = HIGH_COALESCE;
+			}
+		}
+	}
+	return 0;
+
+}
+
+/* This is device interrupt function. It handles transmit,
+ * receive,link change and hardware timer interrupts.
+ */
+static irqreturn_t amd8111e_interrupt(int irq, void *dev_id)
+{
+
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	void __iomem *mmio = lp->mmio;
+	unsigned int intr0, intren0;
+	unsigned int handled = 1;
+
+	if (unlikely(!dev))
+		return IRQ_NONE;
+
+	spin_lock(&lp->lock);
+
+	/* disabling interrupt */
+	writel(INTREN, mmio + CMD0);
+
+	/* Read interrupt status */
+	intr0 = readl(mmio + INT0);
+	intren0 = readl(mmio + INTEN0);
+
+	/* Process all the INT event until INTR bit is clear. */
+
+	if (!(intr0 & INTR)) {
+		handled = 0;
+		goto err_no_interrupt;
+	}
+
+	/* Current driver processes 4 interrupts : RINT,TINT,LCINT,STINT */
+	writel(intr0, mmio + INT0);
+
+	/* Check if Receive Interrupt has occurred. */
+	if (intr0 & RINT0) {
+		if (napi_schedule_prep(&lp->napi)) {
+			/* Disable receive interrupts */
+			writel(RINTEN0, mmio + INTEN0);
+			/* Schedule a polling routine */
+			__napi_schedule(&lp->napi);
+		} else if (intren0 & RINTEN0) {
+			netdev_dbg(dev, "************Driver bug! interrupt while in poll\n");
+			/* Fix by disable receive interrupts */
+			writel(RINTEN0, mmio + INTEN0);
+		}
+	}
+
+	/* Check if  Transmit Interrupt has occurred. */
+	if (intr0 & TINT0)
+		amd8111e_tx(dev);
+
+	/* Check if  Link Change Interrupt has occurred. */
+	if (intr0 & LCINT)
+		amd8111e_link_change(dev);
+
+	/* Check if Hardware Timer Interrupt has occurred. */
+	if (intr0 & STINT)
+		amd8111e_calc_coalesce(dev);
+
+err_no_interrupt:
+	writel(VAL0 | INTREN, mmio + CMD0);
+
+	spin_unlock(&lp->lock);
+
+	return IRQ_RETVAL(handled);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void amd8111e_poll(struct net_device *dev)
+{
+	unsigned long flags;
+	local_irq_save(flags);
+	amd8111e_interrupt(0, dev);
+	local_irq_restore(flags);
+}
+#endif
+
+
+/* This function closes the network interface and updates
+ * the statistics so that most recent statistics will be
+ * available after the interface is down.
+ */
+static int amd8111e_close(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	netif_stop_queue(dev);
+
+	napi_disable(&lp->napi);
+
+	spin_lock_irq(&lp->lock);
+
+	amd8111e_disable_interrupt(lp);
+	amd8111e_stop_chip(lp);
+
+	/* Free transmit and receive skbs */
+	amd8111e_free_skbs(lp->amd8111e_net_dev);
+
+	netif_carrier_off(lp->amd8111e_net_dev);
+
+	/* Delete ipg timer */
+	if (lp->options & OPTION_DYN_IPG_ENABLE)
+		del_timer_sync(&lp->ipg_data.ipg_timer);
+
+	spin_unlock_irq(&lp->lock);
+	free_irq(dev->irq, dev);
+	amd8111e_free_ring(lp);
+
+	/* Update the statistics before closing */
+	amd8111e_get_stats(dev);
+	lp->opened = 0;
+	return 0;
+}
+
+/* This function opens new interface.It requests irq for the device,
+ * initializes the device,buffers and descriptors, and starts the device.
+ */
+static int amd8111e_open(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+
+	if (dev->irq == 0 || request_irq(dev->irq, amd8111e_interrupt,
+					 IRQF_SHARED, dev->name, dev))
+		return -EAGAIN;
+
+	napi_enable(&lp->napi);
+
+	spin_lock_irq(&lp->lock);
+
+	amd8111e_init_hw_default(lp);
+
+	if (amd8111e_restart(dev)) {
+		spin_unlock_irq(&lp->lock);
+		napi_disable(&lp->napi);
+		if (dev->irq)
+			free_irq(dev->irq, dev);
+		return -ENOMEM;
+	}
+	/* Start ipg timer */
+	if (lp->options & OPTION_DYN_IPG_ENABLE) {
+		add_timer(&lp->ipg_data.ipg_timer);
+		netdev_info(dev, "Dynamic IPG Enabled\n");
+	}
+
+	lp->opened = 1;
+
+	spin_unlock_irq(&lp->lock);
+
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+/* This function checks if there is any transmit  descriptors
+ * available to queue more packet.
+ */
+static int amd8111e_tx_queue_avail(struct amd8111e_priv *lp)
+{
+	int tx_index = lp->tx_idx & TX_BUFF_MOD_MASK;
+	if (lp->tx_skbuff[tx_index])
+		return -1;
+	else
+		return 0;
+
+}
+
+/* This function will queue the transmit packets to the
+ * descriptors and will trigger the send operation. It also
+ * initializes the transmit descriptors with buffer physical address,
+ * byte count, ownership to hardware etc.
+ */
+static netdev_tx_t amd8111e_start_xmit(struct sk_buff *skb,
+				       struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int tx_index;
+	unsigned long flags;
+
+	spin_lock_irqsave(&lp->lock, flags);
+
+	tx_index = lp->tx_idx & TX_RING_DR_MOD_MASK;
+
+	lp->tx_ring[tx_index].buff_count = cpu_to_le16(skb->len);
+
+	lp->tx_skbuff[tx_index] = skb;
+	lp->tx_ring[tx_index].tx_flags = 0;
+
+#if AMD8111E_VLAN_TAG_USED
+	if (skb_vlan_tag_present(skb)) {
+		lp->tx_ring[tx_index].tag_ctrl_cmd |=
+				cpu_to_le16(TCC_VLAN_INSERT);
+		lp->tx_ring[tx_index].tag_ctrl_info =
+				cpu_to_le16(skb_vlan_tag_get(skb));
+
+	}
+#endif
+	lp->tx_dma_addr[tx_index] =
+	    dma_map_single(&lp->pci_dev->dev, skb->data, skb->len,
+			   DMA_TO_DEVICE);
+	lp->tx_ring[tx_index].buff_phy_addr =
+	    cpu_to_le32(lp->tx_dma_addr[tx_index]);
+
+	/*  Set FCS and LTINT bits */
+	wmb();
+	lp->tx_ring[tx_index].tx_flags |=
+	    cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT|ADD_FCS_BIT|LTINT_BIT);
+
+	lp->tx_idx++;
+
+	/* Trigger an immediate send poll. */
+	writel(VAL1 | TDMD0, lp->mmio + CMD0);
+	writel(VAL2 | RDMD0, lp->mmio + CMD0);
+
+	if (amd8111e_tx_queue_avail(lp) < 0) {
+		netif_stop_queue(dev);
+	}
+	spin_unlock_irqrestore(&lp->lock, flags);
+	return NETDEV_TX_OK;
+}
+/* This function returns all the memory mapped registers of the device. */
+static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
+{
+	void __iomem *mmio = lp->mmio;
+	/* Read only necessary registers */
+	buf[0] = readl(mmio + XMT_RING_BASE_ADDR0);
+	buf[1] = readl(mmio + XMT_RING_LEN0);
+	buf[2] = readl(mmio + RCV_RING_BASE_ADDR0);
+	buf[3] = readl(mmio + RCV_RING_LEN0);
+	buf[4] = readl(mmio + CMD0);
+	buf[5] = readl(mmio + CMD2);
+	buf[6] = readl(mmio + CMD3);
+	buf[7] = readl(mmio + CMD7);
+	buf[8] = readl(mmio + INT0);
+	buf[9] = readl(mmio + INTEN0);
+	buf[10] = readl(mmio + LADRF);
+	buf[11] = readl(mmio + LADRF+4);
+	buf[12] = readl(mmio + STAT0);
+}
+
+
+/* This function sets promiscuos mode, all-multi mode or the multicast address
+ * list to the device.
+ */
+static void amd8111e_set_multicast_list(struct net_device *dev)
+{
+	struct netdev_hw_addr *ha;
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	u32 mc_filter[2];
+	int bit_num;
+
+	if (dev->flags & IFF_PROMISC) {
+		writel(VAL2 | PROM, lp->mmio + CMD2);
+		return;
+	}
+	else
+		writel(PROM, lp->mmio + CMD2);
+	if (dev->flags & IFF_ALLMULTI ||
+	    netdev_mc_count(dev) > MAX_FILTER_SIZE) {
+		/* get all multicast packet */
+		mc_filter[1] = mc_filter[0] = 0xffffffff;
+		lp->options |= OPTION_MULTICAST_ENABLE;
+		amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
+		return;
+	}
+	if (netdev_mc_empty(dev)) {
+		/* get only own packets */
+		mc_filter[1] = mc_filter[0] = 0;
+		lp->options &= ~OPTION_MULTICAST_ENABLE;
+		amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
+		/* disable promiscuous mode */
+		writel(PROM, lp->mmio + CMD2);
+		return;
+	}
+	/* load all the multicast addresses in the logic filter */
+	lp->options |= OPTION_MULTICAST_ENABLE;
+	mc_filter[1] = mc_filter[0] = 0;
+	netdev_for_each_mc_addr(ha, dev) {
+		bit_num = (ether_crc_le(ETH_ALEN, ha->addr) >> 26) & 0x3f;
+		mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
+	}
+	amd8111e_writeq(*(u64 *)mc_filter, lp->mmio + LADRF);
+
+	/* To eliminate PCI posting bug */
+	readl(lp->mmio + CMD2);
+
+}
+
+static void amd8111e_get_drvinfo(struct net_device *dev,
+				 struct ethtool_drvinfo *info)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	struct pci_dev *pci_dev = lp->pci_dev;
+	strscpy(info->driver, MODULE_NAME, sizeof(info->driver));
+	snprintf(info->fw_version, sizeof(info->fw_version),
+		"%u", chip_version);
+	strscpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
+}
+
+static int amd8111e_get_regs_len(struct net_device *dev)
+{
+	return AMD8111E_REG_DUMP_LEN;
+}
+
+static void amd8111e_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	regs->version = 0;
+	amd8111e_read_regs(lp, buf);
+}
+
+static int amd8111e_get_link_ksettings(struct net_device *dev,
+				       struct ethtool_link_ksettings *cmd)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	spin_lock_irq(&lp->lock);
+	mii_ethtool_get_link_ksettings(&lp->mii_if, cmd);
+	spin_unlock_irq(&lp->lock);
+	return 0;
+}
+
+static int amd8111e_set_link_ksettings(struct net_device *dev,
+				       const struct ethtool_link_ksettings *cmd)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int res;
+	spin_lock_irq(&lp->lock);
+	res = mii_ethtool_set_link_ksettings(&lp->mii_if, cmd);
+	spin_unlock_irq(&lp->lock);
+	return res;
+}
+
+static int amd8111e_nway_reset(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	return mii_nway_restart(&lp->mii_if);
+}
+
+static u32 amd8111e_get_link(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	return mii_link_ok(&lp->mii_if);
+}
+
+static void amd8111e_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	wol_info->supported = WAKE_MAGIC|WAKE_PHY;
+	if (lp->options & OPTION_WOL_ENABLE)
+		wol_info->wolopts = WAKE_MAGIC;
+}
+
+static int amd8111e_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol_info)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	if (wol_info->wolopts & ~(WAKE_MAGIC|WAKE_PHY))
+		return -EINVAL;
+	spin_lock_irq(&lp->lock);
+	if (wol_info->wolopts & WAKE_MAGIC)
+		lp->options |=
+			(OPTION_WOL_ENABLE | OPTION_WAKE_MAGIC_ENABLE);
+	else if (wol_info->wolopts & WAKE_PHY)
+		lp->options |=
+			(OPTION_WOL_ENABLE | OPTION_WAKE_PHY_ENABLE);
+	else
+		lp->options &= ~OPTION_WOL_ENABLE;
+	spin_unlock_irq(&lp->lock);
+	return 0;
+}
+
+static const struct ethtool_ops ops = {
+	.get_drvinfo = amd8111e_get_drvinfo,
+	.get_regs_len = amd8111e_get_regs_len,
+	.get_regs = amd8111e_get_regs,
+	.nway_reset = amd8111e_nway_reset,
+	.get_link = amd8111e_get_link,
+	.get_wol = amd8111e_get_wol,
+	.set_wol = amd8111e_set_wol,
+	.get_link_ksettings = amd8111e_get_link_ksettings,
+	.set_link_ksettings = amd8111e_set_link_ksettings,
+};
+
+/* This function handles all the  ethtool ioctls. It gives driver info,
+ * gets/sets driver speed, gets memory mapped register values, forces
+ * auto negotiation, sets/gets WOL options for ethtool application.
+ */
+static int amd8111e_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+	struct mii_ioctl_data *data = if_mii(ifr);
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int err;
+	u32 mii_regval;
+
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		data->phy_id = lp->ext_phy_addr;
+
+		fallthrough;
+	case SIOCGMIIREG:
+
+		spin_lock_irq(&lp->lock);
+		err = amd8111e_read_phy(lp, data->phy_id,
+			data->reg_num & PHY_REG_ADDR_MASK, &mii_regval);
+		spin_unlock_irq(&lp->lock);
+
+		data->val_out = mii_regval;
+		return err;
+
+	case SIOCSMIIREG:
+
+		spin_lock_irq(&lp->lock);
+		err = amd8111e_write_phy(lp, data->phy_id,
+			data->reg_num & PHY_REG_ADDR_MASK, data->val_in);
+		spin_unlock_irq(&lp->lock);
+
+		return err;
+
+	default:
+		/* do nothing */
+		break;
+	}
+	return -EOPNOTSUPP;
+}
+static int amd8111e_set_mac_address(struct net_device *dev, void *p)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int i;
+	struct sockaddr *addr = p;
+
+	eth_hw_addr_set(dev, addr->sa_data);
+	spin_lock_irq(&lp->lock);
+	/* Setting the MAC address to the device */
+	for (i = 0; i < ETH_ALEN; i++)
+		writeb(dev->dev_addr[i], lp->mmio + PADR + i);
+
+	spin_unlock_irq(&lp->lock);
+
+	return 0;
+}
+
+/* This function changes the mtu of the device. It restarts the device  to
+ * initialize the descriptor with new receive buffers.
+ */
+static int amd8111e_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int err;
+
+	if (!netif_running(dev)) {
+		/* new_mtu will be used
+		 * when device starts netxt time
+		 */
+		dev->mtu = new_mtu;
+		return 0;
+	}
+
+	spin_lock_irq(&lp->lock);
+
+	/* stop the chip */
+	writel(RUN, lp->mmio + CMD0);
+
+	dev->mtu = new_mtu;
+
+	err = amd8111e_restart(dev);
+	spin_unlock_irq(&lp->lock);
+	if (!err)
+		netif_start_queue(dev);
+	return err;
+}
+
+static int amd8111e_enable_magicpkt(struct amd8111e_priv *lp)
+{
+	writel(VAL1 | MPPLBA, lp->mmio + CMD3);
+	writel(VAL0 | MPEN_SW, lp->mmio + CMD7);
+
+	/* To eliminate PCI posting bug */
+	readl(lp->mmio + CMD7);
+	return 0;
+}
+
+static int amd8111e_enable_link_change(struct amd8111e_priv *lp)
+{
+
+	/* Adapter is already stopped/suspended/interrupt-disabled */
+	writel(VAL0 | LCMODE_SW, lp->mmio + CMD7);
+
+	/* To eliminate PCI posting bug */
+	readl(lp->mmio + CMD7);
+	return 0;
+}
+
+/* This function is called when a packet transmission fails to complete
+ * within a reasonable period, on the assumption that an interrupt have
+ * failed or the interface is locked up. This function will reinitialize
+ * the hardware.
+ */
+static void amd8111e_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int err;
+
+	netdev_err(dev, "transmit timed out, resetting\n");
+
+	spin_lock_irq(&lp->lock);
+	err = amd8111e_restart(dev);
+	spin_unlock_irq(&lp->lock);
+	if (!err)
+		netif_wake_queue(dev);
+}
+
+static int __maybe_unused amd8111e_suspend(struct device *dev_d)
+{
+	struct net_device *dev = dev_get_drvdata(dev_d);
+	struct amd8111e_priv *lp = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return 0;
+
+	/* disable the interrupt */
+	spin_lock_irq(&lp->lock);
+	amd8111e_disable_interrupt(lp);
+	spin_unlock_irq(&lp->lock);
+
+	netif_device_detach(dev);
+
+	/* stop chip */
+	spin_lock_irq(&lp->lock);
+	if (lp->options & OPTION_DYN_IPG_ENABLE)
+		del_timer_sync(&lp->ipg_data.ipg_timer);
+	amd8111e_stop_chip(lp);
+	spin_unlock_irq(&lp->lock);
+
+	if (lp->options & OPTION_WOL_ENABLE) {
+		 /* enable wol */
+		if (lp->options & OPTION_WAKE_MAGIC_ENABLE)
+			amd8111e_enable_magicpkt(lp);
+		if (lp->options & OPTION_WAKE_PHY_ENABLE)
+			amd8111e_enable_link_change(lp);
+
+		device_set_wakeup_enable(dev_d, 1);
+
+	} else {
+		device_set_wakeup_enable(dev_d, 0);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused amd8111e_resume(struct device *dev_d)
+{
+	struct net_device *dev = dev_get_drvdata(dev_d);
+	struct amd8111e_priv *lp = netdev_priv(dev);
+
+	if (!netif_running(dev))
+		return 0;
+
+	netif_device_attach(dev);
+
+	spin_lock_irq(&lp->lock);
+	amd8111e_restart(dev);
+	/* Restart ipg timer */
+	if (lp->options & OPTION_DYN_IPG_ENABLE)
+		mod_timer(&lp->ipg_data.ipg_timer,
+				jiffies + IPG_CONVERGE_JIFFIES);
+	spin_unlock_irq(&lp->lock);
+
+	return 0;
+}
+
+static void amd8111e_config_ipg(struct timer_list *t)
+{
+	struct amd8111e_priv *lp = from_timer(lp, t, ipg_data.ipg_timer);
+	struct ipg_info *ipg_data = &lp->ipg_data;
+	void __iomem *mmio = lp->mmio;
+	unsigned int prev_col_cnt = ipg_data->col_cnt;
+	unsigned int total_col_cnt;
+	unsigned int tmp_ipg;
+
+	if (lp->link_config.duplex == DUPLEX_FULL) {
+		ipg_data->ipg = DEFAULT_IPG;
+		return;
+	}
+
+	if (ipg_data->ipg_state == SSTATE) {
+
+		if (ipg_data->timer_tick == IPG_STABLE_TIME) {
+
+			ipg_data->timer_tick = 0;
+			ipg_data->ipg = MIN_IPG - IPG_STEP;
+			ipg_data->current_ipg = MIN_IPG;
+			ipg_data->diff_col_cnt = 0xFFFFFFFF;
+			ipg_data->ipg_state = CSTATE;
+		}
+		else
+			ipg_data->timer_tick++;
+	}
+
+	if (ipg_data->ipg_state == CSTATE) {
+
+		/* Get the current collision count */
+
+		total_col_cnt = ipg_data->col_cnt =
+				amd8111e_read_mib(mmio, xmt_collisions);
+
+		if ((total_col_cnt - prev_col_cnt) <
+				(ipg_data->diff_col_cnt)) {
+
+			ipg_data->diff_col_cnt =
+				total_col_cnt - prev_col_cnt;
+
+			ipg_data->ipg = ipg_data->current_ipg;
+		}
+
+		ipg_data->current_ipg += IPG_STEP;
+
+		if (ipg_data->current_ipg <= MAX_IPG)
+			tmp_ipg = ipg_data->current_ipg;
+		else {
+			tmp_ipg = ipg_data->ipg;
+			ipg_data->ipg_state = SSTATE;
+		}
+		writew((u32)tmp_ipg, mmio + IPG);
+		writew((u32)(tmp_ipg - IFS1_DELTA), mmio + IFS1);
+	}
+	mod_timer(&lp->ipg_data.ipg_timer, jiffies + IPG_CONVERGE_JIFFIES);
+	return;
+
+}
+
+static void amd8111e_probe_ext_phy(struct net_device *dev)
+{
+	struct amd8111e_priv *lp = netdev_priv(dev);
+	int i;
+
+	for (i = 0x1e; i >= 0; i--) {
+		u32 id1, id2;
+
+		if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1))
+			continue;
+		if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2))
+			continue;
+		lp->ext_phy_id = (id1 << 16) | id2;
+		lp->ext_phy_addr = i;
+		return;
+	}
+	lp->ext_phy_id = 0;
+	lp->ext_phy_addr = 1;
+}
+
+static const struct net_device_ops amd8111e_netdev_ops = {
+	.ndo_open		= amd8111e_open,
+	.ndo_stop		= amd8111e_close,
+	.ndo_start_xmit		= amd8111e_start_xmit,
+	.ndo_tx_timeout		= amd8111e_tx_timeout,
+	.ndo_get_stats		= amd8111e_get_stats,
+	.ndo_set_rx_mode	= amd8111e_set_multicast_list,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= amd8111e_set_mac_address,
+	.ndo_eth_ioctl		= amd8111e_ioctl,
+	.ndo_change_mtu		= amd8111e_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	 = amd8111e_poll,
+#endif
+};
+
+static int amd8111e_probe_one(struct pci_dev *pdev,
+				  const struct pci_device_id *ent)
+{
+	int err, i;
+	unsigned long reg_addr, reg_len;
+	struct amd8111e_priv *lp;
+	struct net_device *dev;
+	u8 addr[ETH_ALEN];
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot enable new PCI device\n");
+		return err;
+	}
+
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+		dev_err(&pdev->dev, "Cannot find PCI base address\n");
+		err = -ENODEV;
+		goto err_disable_pdev;
+	}
+
+	err = pci_request_regions(pdev, MODULE_NAME);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
+		goto err_disable_pdev;
+	}
+
+	pci_set_master(pdev);
+
+	/* Find power-management capability. */
+	if (!pdev->pm_cap) {
+		dev_err(&pdev->dev, "No Power Management capability\n");
+		err = -ENODEV;
+		goto err_free_reg;
+	}
+
+	/* Initialize DMA */
+	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) < 0) {
+		dev_err(&pdev->dev, "DMA not supported\n");
+		err = -ENODEV;
+		goto err_free_reg;
+	}
+
+	reg_addr = pci_resource_start(pdev, 0);
+	reg_len = pci_resource_len(pdev, 0);
+
+	dev = alloc_etherdev(sizeof(struct amd8111e_priv));
+	if (!dev) {
+		err = -ENOMEM;
+		goto err_free_reg;
+	}
+
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+#if AMD8111E_VLAN_TAG_USED
+	dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
+#endif
+
+	lp = netdev_priv(dev);
+	lp->pci_dev = pdev;
+	lp->amd8111e_net_dev = dev;
+	lp->pm_cap = pdev->pm_cap;
+
+	spin_lock_init(&lp->lock);
+
+	lp->mmio = devm_ioremap(&pdev->dev, reg_addr, reg_len);
+	if (!lp->mmio) {
+		dev_err(&pdev->dev, "Cannot map device registers\n");
+		err = -ENOMEM;
+		goto err_free_dev;
+	}
+
+	/* Initializing MAC address */
+	for (i = 0; i < ETH_ALEN; i++)
+		addr[i] = readb(lp->mmio + PADR + i);
+	eth_hw_addr_set(dev, addr);
+
+	/* Setting user defined parametrs */
+	lp->ext_phy_option = speed_duplex[card_idx];
+	if (coalesce[card_idx])
+		lp->options |= OPTION_INTR_COAL_ENABLE;
+	if (dynamic_ipg[card_idx++])
+		lp->options |= OPTION_DYN_IPG_ENABLE;
+
+
+	/* Initialize driver entry points */
+	dev->netdev_ops = &amd8111e_netdev_ops;
+	dev->ethtool_ops = &ops;
+	dev->irq = pdev->irq;
+	dev->watchdog_timeo = AMD8111E_TX_TIMEOUT;
+	dev->min_mtu = AMD8111E_MIN_MTU;
+	dev->max_mtu = AMD8111E_MAX_MTU;
+	netif_napi_add_weight(dev, &lp->napi, amd8111e_rx_poll, 32);
+
+	/* Probe the external PHY */
+	amd8111e_probe_ext_phy(dev);
+
+	/* setting mii default values */
+	lp->mii_if.dev = dev;
+	lp->mii_if.mdio_read = amd8111e_mdio_read;
+	lp->mii_if.mdio_write = amd8111e_mdio_write;
+	lp->mii_if.phy_id = lp->ext_phy_addr;
+
+	/* Set receive buffer length and set jumbo option*/
+	amd8111e_set_rx_buff_len(dev);
+
+
+	err = register_netdev(dev);
+	if (err) {
+		dev_err(&pdev->dev, "Cannot register net device\n");
+		goto err_free_dev;
+	}
+
+	pci_set_drvdata(pdev, dev);
+
+	/* Initialize software ipg timer */
+	if (lp->options & OPTION_DYN_IPG_ENABLE) {
+		timer_setup(&lp->ipg_data.ipg_timer, amd8111e_config_ipg, 0);
+		lp->ipg_data.ipg_timer.expires = jiffies +
+						 IPG_CONVERGE_JIFFIES;
+		lp->ipg_data.ipg = DEFAULT_IPG;
+		lp->ipg_data.ipg_state = CSTATE;
+	}
+
+	/*  display driver and device information */
+	chip_version = (readl(lp->mmio + CHIPID) & 0xf0000000) >> 28;
+	dev_info(&pdev->dev, "[ Rev %x ] PCI 10/100BaseT Ethernet %pM\n",
+		 chip_version, dev->dev_addr);
+	if (lp->ext_phy_id)
+		dev_info(&pdev->dev, "Found MII PHY ID 0x%08x at address 0x%02x\n",
+			 lp->ext_phy_id, lp->ext_phy_addr);
+	else
+		dev_info(&pdev->dev, "Couldn't detect MII PHY, assuming address 0x01\n");
+
+	return 0;
+
+err_free_dev:
+	free_netdev(dev);
+
+err_free_reg:
+	pci_release_regions(pdev);
+
+err_disable_pdev:
+	pci_disable_device(pdev);
+	return err;
+
+}
+
+static void amd8111e_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+
+	if (dev) {
+		unregister_netdev(dev);
+		free_netdev(dev);
+		pci_release_regions(pdev);
+		pci_disable_device(pdev);
+	}
+}
+
+static const struct pci_device_id amd8111e_pci_tbl[] = {
+	{
+	 .vendor = PCI_VENDOR_ID_AMD,
+	 .device = PCI_DEVICE_ID_AMD8111E_7462,
+	},
+	{
+	 .vendor = 0,
+	}
+};
+MODULE_DEVICE_TABLE(pci, amd8111e_pci_tbl);
+
+static SIMPLE_DEV_PM_OPS(amd8111e_pm_ops, amd8111e_suspend, amd8111e_resume);
+
+static struct pci_driver amd8111e_driver = {
+	.name		= MODULE_NAME,
+	.id_table	= amd8111e_pci_tbl,
+	.probe		= amd8111e_probe_one,
+	.remove		= amd8111e_remove_one,
+	.driver.pm	= &amd8111e_pm_ops
+};
+
+module_pci_driver(amd8111e_driver);