Adding upstream version 6.1.76.upstream/6.1.76upstream

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

1 files changed, 7980 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
new file mode 100644
index 000000000..db8e06157
--- /dev/null
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -0,0 +1,7980 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 1999 - 2018 Intel Corporation. */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/interrupt.h>
+#include <linux/tcp.h>
+#include <linux/ipv6.h>
+#include <linux/slab.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/pm_qos.h>
+#include <linux/pm_runtime.h>
+#include <linux/aer.h>
+#include <linux/prefetch.h>
+#include <linux/suspend.h>
+
+#include "e1000.h"
+
+char e1000e_driver_name[] = "e1000e";
+
+#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
+static int debug = -1;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+
+static const struct e1000_info *e1000_info_tbl[] = {
+	[board_82571]		= &e1000_82571_info,
+	[board_82572]		= &e1000_82572_info,
+	[board_82573]		= &e1000_82573_info,
+	[board_82574]		= &e1000_82574_info,
+	[board_82583]		= &e1000_82583_info,
+	[board_80003es2lan]	= &e1000_es2_info,
+	[board_ich8lan]		= &e1000_ich8_info,
+	[board_ich9lan]		= &e1000_ich9_info,
+	[board_ich10lan]	= &e1000_ich10_info,
+	[board_pchlan]		= &e1000_pch_info,
+	[board_pch2lan]		= &e1000_pch2_info,
+	[board_pch_lpt]		= &e1000_pch_lpt_info,
+	[board_pch_spt]		= &e1000_pch_spt_info,
+	[board_pch_cnp]		= &e1000_pch_cnp_info,
+	[board_pch_tgp]		= &e1000_pch_tgp_info,
+	[board_pch_adp]		= &e1000_pch_adp_info,
+};
+
+struct e1000_reg_info {
+	u32 ofs;
+	char *name;
+};
+
+static const struct e1000_reg_info e1000_reg_info_tbl[] = {
+	/* General Registers */
+	{E1000_CTRL, "CTRL"},
+	{E1000_STATUS, "STATUS"},
+	{E1000_CTRL_EXT, "CTRL_EXT"},
+
+	/* Interrupt Registers */
+	{E1000_ICR, "ICR"},
+
+	/* Rx Registers */
+	{E1000_RCTL, "RCTL"},
+	{E1000_RDLEN(0), "RDLEN"},
+	{E1000_RDH(0), "RDH"},
+	{E1000_RDT(0), "RDT"},
+	{E1000_RDTR, "RDTR"},
+	{E1000_RXDCTL(0), "RXDCTL"},
+	{E1000_ERT, "ERT"},
+	{E1000_RDBAL(0), "RDBAL"},
+	{E1000_RDBAH(0), "RDBAH"},
+	{E1000_RDFH, "RDFH"},
+	{E1000_RDFT, "RDFT"},
+	{E1000_RDFHS, "RDFHS"},
+	{E1000_RDFTS, "RDFTS"},
+	{E1000_RDFPC, "RDFPC"},
+
+	/* Tx Registers */
+	{E1000_TCTL, "TCTL"},
+	{E1000_TDBAL(0), "TDBAL"},
+	{E1000_TDBAH(0), "TDBAH"},
+	{E1000_TDLEN(0), "TDLEN"},
+	{E1000_TDH(0), "TDH"},
+	{E1000_TDT(0), "TDT"},
+	{E1000_TIDV, "TIDV"},
+	{E1000_TXDCTL(0), "TXDCTL"},
+	{E1000_TADV, "TADV"},
+	{E1000_TARC(0), "TARC"},
+	{E1000_TDFH, "TDFH"},
+	{E1000_TDFT, "TDFT"},
+	{E1000_TDFHS, "TDFHS"},
+	{E1000_TDFTS, "TDFTS"},
+	{E1000_TDFPC, "TDFPC"},
+
+	/* List Terminator */
+	{0, NULL}
+};
+
+/**
+ * __ew32_prepare - prepare to write to MAC CSR register on certain parts
+ * @hw: pointer to the HW structure
+ *
+ * When updating the MAC CSR registers, the Manageability Engine (ME) could
+ * be accessing the registers at the same time.  Normally, this is handled in
+ * h/w by an arbiter but on some parts there is a bug that acknowledges Host
+ * accesses later than it should which could result in the register to have
+ * an incorrect value.  Workaround this by checking the FWSM register which
+ * has bit 24 set while ME is accessing MAC CSR registers, wait if it is set
+ * and try again a number of times.
+ **/
+static void __ew32_prepare(struct e1000_hw *hw)
+{
+	s32 i = E1000_ICH_FWSM_PCIM2PCI_COUNT;
+
+	while ((er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI) && --i)
+		udelay(50);
+}
+
+void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val)
+{
+	if (hw->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+		__ew32_prepare(hw);
+
+	writel(val, hw->hw_addr + reg);
+}
+
+/**
+ * e1000_regdump - register printout routine
+ * @hw: pointer to the HW structure
+ * @reginfo: pointer to the register info table
+ **/
+static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
+{
+	int n = 0;
+	char rname[16];
+	u32 regs[8];
+
+	switch (reginfo->ofs) {
+	case E1000_RXDCTL(0):
+		for (n = 0; n < 2; n++)
+			regs[n] = __er32(hw, E1000_RXDCTL(n));
+		break;
+	case E1000_TXDCTL(0):
+		for (n = 0; n < 2; n++)
+			regs[n] = __er32(hw, E1000_TXDCTL(n));
+		break;
+	case E1000_TARC(0):
+		for (n = 0; n < 2; n++)
+			regs[n] = __er32(hw, E1000_TARC(n));
+		break;
+	default:
+		pr_info("%-15s %08x\n",
+			reginfo->name, __er32(hw, reginfo->ofs));
+		return;
+	}
+
+	snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
+	pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]);
+}
+
+static void e1000e_dump_ps_pages(struct e1000_adapter *adapter,
+				 struct e1000_buffer *bi)
+{
+	int i;
+	struct e1000_ps_page *ps_page;
+
+	for (i = 0; i < adapter->rx_ps_pages; i++) {
+		ps_page = &bi->ps_pages[i];
+
+		if (ps_page->page) {
+			pr_info("packet dump for ps_page %d:\n", i);
+			print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
+				       16, 1, page_address(ps_page->page),
+				       PAGE_SIZE, true);
+		}
+	}
+}
+
+/**
+ * e1000e_dump - Print registers, Tx-ring and Rx-ring
+ * @adapter: board private structure
+ **/
+static void e1000e_dump(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_reg_info *reginfo;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	struct e1000_tx_desc *tx_desc;
+	struct my_u0 {
+		__le64 a;
+		__le64 b;
+	} *u0;
+	struct e1000_buffer *buffer_info;
+	struct e1000_ring *rx_ring = adapter->rx_ring;
+	union e1000_rx_desc_packet_split *rx_desc_ps;
+	union e1000_rx_desc_extended *rx_desc;
+	struct my_u1 {
+		__le64 a;
+		__le64 b;
+		__le64 c;
+		__le64 d;
+	} *u1;
+	u32 staterr;
+	int i = 0;
+
+	if (!netif_msg_hw(adapter))
+		return;
+
+	/* Print netdevice Info */
+	if (netdev) {
+		dev_info(&adapter->pdev->dev, "Net device Info\n");
+		pr_info("Device Name     state            trans_start\n");
+		pr_info("%-15s %016lX %016lX\n", netdev->name,
+			netdev->state, dev_trans_start(netdev));
+	}
+
+	/* Print Registers */
+	dev_info(&adapter->pdev->dev, "Register Dump\n");
+	pr_info(" Register Name   Value\n");
+	for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
+	     reginfo->name; reginfo++) {
+		e1000_regdump(hw, reginfo);
+	}
+
+	/* Print Tx Ring Summary */
+	if (!netdev || !netif_running(netdev))
+		return;
+
+	dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
+	pr_info("Queue [NTU] [NTC] [bi(ntc)->dma  ] leng ntw timestamp\n");
+	buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
+	pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
+		0, tx_ring->next_to_use, tx_ring->next_to_clean,
+		(unsigned long long)buffer_info->dma,
+		buffer_info->length,
+		buffer_info->next_to_watch,
+		(unsigned long long)buffer_info->time_stamp);
+
+	/* Print Tx Ring */
+	if (!netif_msg_tx_done(adapter))
+		goto rx_ring_summary;
+
+	dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
+
+	/* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
+	 *
+	 * Legacy Transmit Descriptor
+	 *   +--------------------------------------------------------------+
+	 * 0 |         Buffer Address [63:0] (Reserved on Write Back)       |
+	 *   +--------------------------------------------------------------+
+	 * 8 | Special  |    CSS     | Status |  CMD    |  CSO   |  Length  |
+	 *   +--------------------------------------------------------------+
+	 *   63       48 47        36 35    32 31     24 23    16 15        0
+	 *
+	 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
+	 *   63      48 47    40 39       32 31             16 15    8 7      0
+	 *   +----------------------------------------------------------------+
+	 * 0 |  TUCSE  | TUCS0  |   TUCSS   |     IPCSE       | IPCS0 | IPCSS |
+	 *   +----------------------------------------------------------------+
+	 * 8 |   MSS   | HDRLEN | RSV | STA | TUCMD | DTYP |      PAYLEN      |
+	 *   +----------------------------------------------------------------+
+	 *   63      48 47    40 39 36 35 32 31   24 23  20 19                0
+	 *
+	 * Extended Data Descriptor (DTYP=0x1)
+	 *   +----------------------------------------------------------------+
+	 * 0 |                     Buffer Address [63:0]                      |
+	 *   +----------------------------------------------------------------+
+	 * 8 | VLAN tag |  POPTS  | Rsvd | Status | Command | DTYP |  DTALEN  |
+	 *   +----------------------------------------------------------------+
+	 *   63       48 47     40 39  36 35    32 31     24 23  20 19        0
+	 */
+	pr_info("Tl[desc]     [address 63:0  ] [SpeCssSCmCsLen] [bi->dma       ] leng  ntw timestamp        bi->skb <-- Legacy format\n");
+	pr_info("Tc[desc]     [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma       ] leng  ntw timestamp        bi->skb <-- Ext Context format\n");
+	pr_info("Td[desc]     [address 63:0  ] [VlaPoRSCm1Dlen] [bi->dma       ] leng  ntw timestamp        bi->skb <-- Ext Data format\n");
+	for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
+		const char *next_desc;
+		tx_desc = E1000_TX_DESC(*tx_ring, i);
+		buffer_info = &tx_ring->buffer_info[i];
+		u0 = (struct my_u0 *)tx_desc;
+		if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
+			next_desc = " NTC/U";
+		else if (i == tx_ring->next_to_use)
+			next_desc = " NTU";
+		else if (i == tx_ring->next_to_clean)
+			next_desc = " NTC";
+		else
+			next_desc = "";
+		pr_info("T%c[0x%03X]    %016llX %016llX %016llX %04X  %3X %016llX %p%s\n",
+			(!(le64_to_cpu(u0->b) & BIT(29)) ? 'l' :
+			 ((le64_to_cpu(u0->b) & BIT(20)) ? 'd' : 'c')),
+			i,
+			(unsigned long long)le64_to_cpu(u0->a),
+			(unsigned long long)le64_to_cpu(u0->b),
+			(unsigned long long)buffer_info->dma,
+			buffer_info->length, buffer_info->next_to_watch,
+			(unsigned long long)buffer_info->time_stamp,
+			buffer_info->skb, next_desc);
+
+		if (netif_msg_pktdata(adapter) && buffer_info->skb)
+			print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
+				       16, 1, buffer_info->skb->data,
+				       buffer_info->skb->len, true);
+	}
+
+	/* Print Rx Ring Summary */
+rx_ring_summary:
+	dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
+	pr_info("Queue [NTU] [NTC]\n");
+	pr_info(" %5d %5X %5X\n",
+		0, rx_ring->next_to_use, rx_ring->next_to_clean);
+
+	/* Print Rx Ring */
+	if (!netif_msg_rx_status(adapter))
+		return;
+
+	dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
+	switch (adapter->rx_ps_pages) {
+	case 1:
+	case 2:
+	case 3:
+		/* [Extended] Packet Split Receive Descriptor Format
+		 *
+		 *    +-----------------------------------------------------+
+		 *  0 |                Buffer Address 0 [63:0]              |
+		 *    +-----------------------------------------------------+
+		 *  8 |                Buffer Address 1 [63:0]              |
+		 *    +-----------------------------------------------------+
+		 * 16 |                Buffer Address 2 [63:0]              |
+		 *    +-----------------------------------------------------+
+		 * 24 |                Buffer Address 3 [63:0]              |
+		 *    +-----------------------------------------------------+
+		 */
+		pr_info("R  [desc]      [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma       ] [bi->skb] <-- Ext Pkt Split format\n");
+		/* [Extended] Receive Descriptor (Write-Back) Format
+		 *
+		 *   63       48 47    32 31     13 12    8 7    4 3        0
+		 *   +------------------------------------------------------+
+		 * 0 | Packet   | IP     |  Rsvd   | MRQ   | Rsvd | MRQ RSS |
+		 *   | Checksum | Ident  |         | Queue |      |  Type   |
+		 *   +------------------------------------------------------+
+		 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
+		 *   +------------------------------------------------------+
+		 *   63       48 47    32 31            20 19               0
+		 */
+		pr_info("RWB[desc]      [ck ipid mrqhsh] [vl   l0 ee  es] [ l3  l2  l1 hs] [reserved      ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
+		for (i = 0; i < rx_ring->count; i++) {
+			const char *next_desc;
+			buffer_info = &rx_ring->buffer_info[i];
+			rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
+			u1 = (struct my_u1 *)rx_desc_ps;
+			staterr =
+			    le32_to_cpu(rx_desc_ps->wb.middle.status_error);
+
+			if (i == rx_ring->next_to_use)
+				next_desc = " NTU";
+			else if (i == rx_ring->next_to_clean)
+				next_desc = " NTC";
+			else
+				next_desc = "";
+
+			if (staterr & E1000_RXD_STAT_DD) {
+				/* Descriptor Done */
+				pr_info("%s[0x%03X]     %016llX %016llX %016llX %016llX ---------------- %p%s\n",
+					"RWB", i,
+					(unsigned long long)le64_to_cpu(u1->a),
+					(unsigned long long)le64_to_cpu(u1->b),
+					(unsigned long long)le64_to_cpu(u1->c),
+					(unsigned long long)le64_to_cpu(u1->d),
+					buffer_info->skb, next_desc);
+			} else {
+				pr_info("%s[0x%03X]     %016llX %016llX %016llX %016llX %016llX %p%s\n",
+					"R  ", i,
+					(unsigned long long)le64_to_cpu(u1->a),
+					(unsigned long long)le64_to_cpu(u1->b),
+					(unsigned long long)le64_to_cpu(u1->c),
+					(unsigned long long)le64_to_cpu(u1->d),
+					(unsigned long long)buffer_info->dma,
+					buffer_info->skb, next_desc);
+
+				if (netif_msg_pktdata(adapter))
+					e1000e_dump_ps_pages(adapter,
+							     buffer_info);
+			}
+		}
+		break;
+	default:
+	case 0:
+		/* Extended Receive Descriptor (Read) Format
+		 *
+		 *   +-----------------------------------------------------+
+		 * 0 |                Buffer Address [63:0]                |
+		 *   +-----------------------------------------------------+
+		 * 8 |                      Reserved                       |
+		 *   +-----------------------------------------------------+
+		 */
+		pr_info("R  [desc]      [buf addr 63:0 ] [reserved 63:0 ] [bi->dma       ] [bi->skb] <-- Ext (Read) format\n");
+		/* Extended Receive Descriptor (Write-Back) Format
+		 *
+		 *   63       48 47    32 31    24 23            4 3        0
+		 *   +------------------------------------------------------+
+		 *   |     RSS Hash      |        |               |         |
+		 * 0 +-------------------+  Rsvd  |   Reserved    | MRQ RSS |
+		 *   | Packet   | IP     |        |               |  Type   |
+		 *   | Checksum | Ident  |        |               |         |
+		 *   +------------------------------------------------------+
+		 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
+		 *   +------------------------------------------------------+
+		 *   63       48 47    32 31            20 19               0
+		 */
+		pr_info("RWB[desc]      [cs ipid    mrq] [vt   ln xe  xs] [bi->skb] <-- Ext (Write-Back) format\n");
+
+		for (i = 0; i < rx_ring->count; i++) {
+			const char *next_desc;
+
+			buffer_info = &rx_ring->buffer_info[i];
+			rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
+			u1 = (struct my_u1 *)rx_desc;
+			staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+
+			if (i == rx_ring->next_to_use)
+				next_desc = " NTU";
+			else if (i == rx_ring->next_to_clean)
+				next_desc = " NTC";
+			else
+				next_desc = "";
+
+			if (staterr & E1000_RXD_STAT_DD) {
+				/* Descriptor Done */
+				pr_info("%s[0x%03X]     %016llX %016llX ---------------- %p%s\n",
+					"RWB", i,
+					(unsigned long long)le64_to_cpu(u1->a),
+					(unsigned long long)le64_to_cpu(u1->b),
+					buffer_info->skb, next_desc);
+			} else {
+				pr_info("%s[0x%03X]     %016llX %016llX %016llX %p%s\n",
+					"R  ", i,
+					(unsigned long long)le64_to_cpu(u1->a),
+					(unsigned long long)le64_to_cpu(u1->b),
+					(unsigned long long)buffer_info->dma,
+					buffer_info->skb, next_desc);
+
+				if (netif_msg_pktdata(adapter) &&
+				    buffer_info->skb)
+					print_hex_dump(KERN_INFO, "",
+						       DUMP_PREFIX_ADDRESS, 16,
+						       1,
+						       buffer_info->skb->data,
+						       adapter->rx_buffer_len,
+						       true);
+			}
+		}
+	}
+}
+
+/**
+ * e1000_desc_unused - calculate if we have unused descriptors
+ * @ring: pointer to ring struct to perform calculation on
+ **/
+static int e1000_desc_unused(struct e1000_ring *ring)
+{
+	if (ring->next_to_clean > ring->next_to_use)
+		return ring->next_to_clean - ring->next_to_use - 1;
+
+	return ring->count + ring->next_to_clean - ring->next_to_use - 1;
+}
+
+/**
+ * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp
+ * @adapter: board private structure
+ * @hwtstamps: time stamp structure to update
+ * @systim: unsigned 64bit system time value.
+ *
+ * Convert the system time value stored in the RX/TXSTMP registers into a
+ * hwtstamp which can be used by the upper level time stamping functions.
+ *
+ * The 'systim_lock' spinlock is used to protect the consistency of the
+ * system time value. This is needed because reading the 64 bit time
+ * value involves reading two 32 bit registers. The first read latches the
+ * value.
+ **/
+static void e1000e_systim_to_hwtstamp(struct e1000_adapter *adapter,
+				      struct skb_shared_hwtstamps *hwtstamps,
+				      u64 systim)
+{
+	u64 ns;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->systim_lock, flags);
+	ns = timecounter_cyc2time(&adapter->tc, systim);
+	spin_unlock_irqrestore(&adapter->systim_lock, flags);
+
+	memset(hwtstamps, 0, sizeof(*hwtstamps));
+	hwtstamps->hwtstamp = ns_to_ktime(ns);
+}
+
+/**
+ * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp
+ * @adapter: board private structure
+ * @status: descriptor extended error and status field
+ * @skb: particular skb to include time stamp
+ *
+ * If the time stamp is valid, convert it into the timecounter ns value
+ * and store that result into the shhwtstamps structure which is passed
+ * up the network stack.
+ **/
+static void e1000e_rx_hwtstamp(struct e1000_adapter *adapter, u32 status,
+			       struct sk_buff *skb)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u64 rxstmp;
+
+	if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP) ||
+	    !(status & E1000_RXDEXT_STATERR_TST) ||
+	    !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID))
+		return;
+
+	/* The Rx time stamp registers contain the time stamp.  No other
+	 * received packet will be time stamped until the Rx time stamp
+	 * registers are read.  Because only one packet can be time stamped
+	 * at a time, the register values must belong to this packet and
+	 * therefore none of the other additional attributes need to be
+	 * compared.
+	 */
+	rxstmp = (u64)er32(RXSTMPL);
+	rxstmp |= (u64)er32(RXSTMPH) << 32;
+	e1000e_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), rxstmp);
+
+	adapter->flags2 &= ~FLAG2_CHECK_RX_HWTSTAMP;
+}
+
+/**
+ * e1000_receive_skb - helper function to handle Rx indications
+ * @adapter: board private structure
+ * @netdev: pointer to netdev struct
+ * @staterr: descriptor extended error and status field as written by hardware
+ * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
+ * @skb: pointer to sk_buff to be indicated to stack
+ **/
+static void e1000_receive_skb(struct e1000_adapter *adapter,
+			      struct net_device *netdev, struct sk_buff *skb,
+			      u32 staterr, __le16 vlan)
+{
+	u16 tag = le16_to_cpu(vlan);
+
+	e1000e_rx_hwtstamp(adapter, staterr, skb);
+
+	skb->protocol = eth_type_trans(skb, netdev);
+
+	if (staterr & E1000_RXD_STAT_VP)
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
+
+	napi_gro_receive(&adapter->napi, skb);
+}
+
+/**
+ * e1000_rx_checksum - Receive Checksum Offload
+ * @adapter: board private structure
+ * @status_err: receive descriptor status and error fields
+ * @skb: socket buffer with received data
+ **/
+static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
+			      struct sk_buff *skb)
+{
+	u16 status = (u16)status_err;
+	u8 errors = (u8)(status_err >> 24);
+
+	skb_checksum_none_assert(skb);
+
+	/* Rx checksum disabled */
+	if (!(adapter->netdev->features & NETIF_F_RXCSUM))
+		return;
+
+	/* Ignore Checksum bit is set */
+	if (status & E1000_RXD_STAT_IXSM)
+		return;
+
+	/* TCP/UDP checksum error bit or IP checksum error bit is set */
+	if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) {
+		/* let the stack verify checksum errors */
+		adapter->hw_csum_err++;
+		return;
+	}
+
+	/* TCP/UDP Checksum has not been calculated */
+	if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
+		return;
+
+	/* It must be a TCP or UDP packet with a valid checksum */
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	adapter->hw_csum_good++;
+}
+
+static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+
+	__ew32_prepare(hw);
+	writel(i, rx_ring->tail);
+
+	if (unlikely(i != readl(rx_ring->tail))) {
+		u32 rctl = er32(RCTL);
+
+		ew32(RCTL, rctl & ~E1000_RCTL_EN);
+		e_err("ME firmware caused invalid RDT - resetting\n");
+		schedule_work(&adapter->reset_task);
+	}
+}
+
+static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+
+	__ew32_prepare(hw);
+	writel(i, tx_ring->tail);
+
+	if (unlikely(i != readl(tx_ring->tail))) {
+		u32 tctl = er32(TCTL);
+
+		ew32(TCTL, tctl & ~E1000_TCTL_EN);
+		e_err("ME firmware caused invalid TDT - resetting\n");
+		schedule_work(&adapter->reset_task);
+	}
+}
+
+/**
+ * e1000_alloc_rx_buffers - Replace used receive buffers
+ * @rx_ring: Rx descriptor ring
+ * @cleaned_count: number to reallocate
+ * @gfp: flags for allocation
+ **/
+static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring,
+				   int cleaned_count, gfp_t gfp)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_rx_desc_extended *rx_desc;
+	struct e1000_buffer *buffer_info;
+	struct sk_buff *skb;
+	unsigned int i;
+	unsigned int bufsz = adapter->rx_buffer_len;
+
+	i = rx_ring->next_to_use;
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (cleaned_count--) {
+		skb = buffer_info->skb;
+		if (skb) {
+			skb_trim(skb, 0);
+			goto map_skb;
+		}
+
+		skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
+		if (!skb) {
+			/* Better luck next round */
+			adapter->alloc_rx_buff_failed++;
+			break;
+		}
+
+		buffer_info->skb = skb;
+map_skb:
+		buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
+						  adapter->rx_buffer_len,
+						  DMA_FROM_DEVICE);
+		if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+			dev_err(&pdev->dev, "Rx DMA map failed\n");
+			adapter->rx_dma_failed++;
+			break;
+		}
+
+		rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
+		rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
+
+		if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
+			/* Force memory writes to complete before letting h/w
+			 * know there are new descriptors to fetch.  (Only
+			 * applicable for weak-ordered memory model archs,
+			 * such as IA-64).
+			 */
+			wmb();
+			if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+				e1000e_update_rdt_wa(rx_ring, i);
+			else
+				writel(i, rx_ring->tail);
+		}
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		buffer_info = &rx_ring->buffer_info[i];
+	}
+
+	rx_ring->next_to_use = i;
+}
+
+/**
+ * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
+ * @rx_ring: Rx descriptor ring
+ * @cleaned_count: number to reallocate
+ * @gfp: flags for allocation
+ **/
+static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
+				      int cleaned_count, gfp_t gfp)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_rx_desc_packet_split *rx_desc;
+	struct e1000_buffer *buffer_info;
+	struct e1000_ps_page *ps_page;
+	struct sk_buff *skb;
+	unsigned int i, j;
+
+	i = rx_ring->next_to_use;
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (cleaned_count--) {
+		rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
+
+		for (j = 0; j < PS_PAGE_BUFFERS; j++) {
+			ps_page = &buffer_info->ps_pages[j];
+			if (j >= adapter->rx_ps_pages) {
+				/* all unused desc entries get hw null ptr */
+				rx_desc->read.buffer_addr[j + 1] =
+				    ~cpu_to_le64(0);
+				continue;
+			}
+			if (!ps_page->page) {
+				ps_page->page = alloc_page(gfp);
+				if (!ps_page->page) {
+					adapter->alloc_rx_buff_failed++;
+					goto no_buffers;
+				}
+				ps_page->dma = dma_map_page(&pdev->dev,
+							    ps_page->page,
+							    0, PAGE_SIZE,
+							    DMA_FROM_DEVICE);
+				if (dma_mapping_error(&pdev->dev,
+						      ps_page->dma)) {
+					dev_err(&adapter->pdev->dev,
+						"Rx DMA page map failed\n");
+					adapter->rx_dma_failed++;
+					goto no_buffers;
+				}
+			}
+			/* Refresh the desc even if buffer_addrs
+			 * didn't change because each write-back
+			 * erases this info.
+			 */
+			rx_desc->read.buffer_addr[j + 1] =
+			    cpu_to_le64(ps_page->dma);
+		}
+
+		skb = __netdev_alloc_skb_ip_align(netdev, adapter->rx_ps_bsize0,
+						  gfp);
+
+		if (!skb) {
+			adapter->alloc_rx_buff_failed++;
+			break;
+		}
+
+		buffer_info->skb = skb;
+		buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
+						  adapter->rx_ps_bsize0,
+						  DMA_FROM_DEVICE);
+		if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+			dev_err(&pdev->dev, "Rx DMA map failed\n");
+			adapter->rx_dma_failed++;
+			/* cleanup skb */
+			dev_kfree_skb_any(skb);
+			buffer_info->skb = NULL;
+			break;
+		}
+
+		rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
+
+		if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
+			/* Force memory writes to complete before letting h/w
+			 * know there are new descriptors to fetch.  (Only
+			 * applicable for weak-ordered memory model archs,
+			 * such as IA-64).
+			 */
+			wmb();
+			if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+				e1000e_update_rdt_wa(rx_ring, i << 1);
+			else
+				writel(i << 1, rx_ring->tail);
+		}
+
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		buffer_info = &rx_ring->buffer_info[i];
+	}
+
+no_buffers:
+	rx_ring->next_to_use = i;
+}
+
+/**
+ * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
+ * @rx_ring: Rx descriptor ring
+ * @cleaned_count: number of buffers to allocate this pass
+ * @gfp: flags for allocation
+ **/
+
+static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
+					 int cleaned_count, gfp_t gfp)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_rx_desc_extended *rx_desc;
+	struct e1000_buffer *buffer_info;
+	struct sk_buff *skb;
+	unsigned int i;
+	unsigned int bufsz = 256 - 16;	/* for skb_reserve */
+
+	i = rx_ring->next_to_use;
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (cleaned_count--) {
+		skb = buffer_info->skb;
+		if (skb) {
+			skb_trim(skb, 0);
+			goto check_page;
+		}
+
+		skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
+		if (unlikely(!skb)) {
+			/* Better luck next round */
+			adapter->alloc_rx_buff_failed++;
+			break;
+		}
+
+		buffer_info->skb = skb;
+check_page:
+		/* allocate a new page if necessary */
+		if (!buffer_info->page) {
+			buffer_info->page = alloc_page(gfp);
+			if (unlikely(!buffer_info->page)) {
+				adapter->alloc_rx_buff_failed++;
+				break;
+			}
+		}
+
+		if (!buffer_info->dma) {
+			buffer_info->dma = dma_map_page(&pdev->dev,
+							buffer_info->page, 0,
+							PAGE_SIZE,
+							DMA_FROM_DEVICE);
+			if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+				adapter->alloc_rx_buff_failed++;
+				break;
+			}
+		}
+
+		rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
+		rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
+
+		if (unlikely(++i == rx_ring->count))
+			i = 0;
+		buffer_info = &rx_ring->buffer_info[i];
+	}
+
+	if (likely(rx_ring->next_to_use != i)) {
+		rx_ring->next_to_use = i;
+		if (unlikely(i-- == 0))
+			i = (rx_ring->count - 1);
+
+		/* Force memory writes to complete before letting h/w
+		 * know there are new descriptors to fetch.  (Only
+		 * applicable for weak-ordered memory model archs,
+		 * such as IA-64).
+		 */
+		wmb();
+		if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+			e1000e_update_rdt_wa(rx_ring, i);
+		else
+			writel(i, rx_ring->tail);
+	}
+}
+
+static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
+				 struct sk_buff *skb)
+{
+	if (netdev->features & NETIF_F_RXHASH)
+		skb_set_hash(skb, le32_to_cpu(rss), PKT_HASH_TYPE_L3);
+}
+
+/**
+ * e1000_clean_rx_irq - Send received data up the network stack
+ * @rx_ring: Rx descriptor ring
+ * @work_done: output parameter for indicating completed work
+ * @work_to_do: how many packets we can clean
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
+			       int work_to_do)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	struct e1000_hw *hw = &adapter->hw;
+	union e1000_rx_desc_extended *rx_desc, *next_rxd;
+	struct e1000_buffer *buffer_info, *next_buffer;
+	u32 length, staterr;
+	unsigned int i;
+	int cleaned_count = 0;
+	bool cleaned = false;
+	unsigned int total_rx_bytes = 0, total_rx_packets = 0;
+
+	i = rx_ring->next_to_clean;
+	rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
+	staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (staterr & E1000_RXD_STAT_DD) {
+		struct sk_buff *skb;
+
+		if (*work_done >= work_to_do)
+			break;
+		(*work_done)++;
+		dma_rmb();	/* read descriptor and rx_buffer_info after status DD */
+
+		skb = buffer_info->skb;
+		buffer_info->skb = NULL;
+
+		prefetch(skb->data - NET_IP_ALIGN);
+
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
+		prefetch(next_rxd);
+
+		next_buffer = &rx_ring->buffer_info[i];
+
+		cleaned = true;
+		cleaned_count++;
+		dma_unmap_single(&pdev->dev, buffer_info->dma,
+				 adapter->rx_buffer_len, DMA_FROM_DEVICE);
+		buffer_info->dma = 0;
+
+		length = le16_to_cpu(rx_desc->wb.upper.length);
+
+		/* !EOP means multiple descriptors were used to store a single
+		 * packet, if that's the case we need to toss it.  In fact, we
+		 * need to toss every packet with the EOP bit clear and the
+		 * next frame that _does_ have the EOP bit set, as it is by
+		 * definition only a frame fragment
+		 */
+		if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
+			adapter->flags2 |= FLAG2_IS_DISCARDING;
+
+		if (adapter->flags2 & FLAG2_IS_DISCARDING) {
+			/* All receives must fit into a single buffer */
+			e_dbg("Receive packet consumed multiple buffers\n");
+			/* recycle */
+			buffer_info->skb = skb;
+			if (staterr & E1000_RXD_STAT_EOP)
+				adapter->flags2 &= ~FLAG2_IS_DISCARDING;
+			goto next_desc;
+		}
+
+		if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
+			     !(netdev->features & NETIF_F_RXALL))) {
+			/* recycle */
+			buffer_info->skb = skb;
+			goto next_desc;
+		}
+
+		/* adjust length to remove Ethernet CRC */
+		if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
+			/* If configured to store CRC, don't subtract FCS,
+			 * but keep the FCS bytes out of the total_rx_bytes
+			 * counter
+			 */
+			if (netdev->features & NETIF_F_RXFCS)
+				total_rx_bytes -= 4;
+			else
+				length -= 4;
+		}
+
+		total_rx_bytes += length;
+		total_rx_packets++;
+
+		/* code added for copybreak, this should improve
+		 * performance for small packets with large amounts
+		 * of reassembly being done in the stack
+		 */
+		if (length < copybreak) {
+			struct sk_buff *new_skb =
+				napi_alloc_skb(&adapter->napi, length);
+			if (new_skb) {
+				skb_copy_to_linear_data_offset(new_skb,
+							       -NET_IP_ALIGN,
+							       (skb->data -
+								NET_IP_ALIGN),
+							       (length +
+								NET_IP_ALIGN));
+				/* save the skb in buffer_info as good */
+				buffer_info->skb = skb;
+				skb = new_skb;
+			}
+			/* else just continue with the old one */
+		}
+		/* end copybreak code */
+		skb_put(skb, length);
+
+		/* Receive Checksum Offload */
+		e1000_rx_checksum(adapter, staterr, skb);
+
+		e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
+
+		e1000_receive_skb(adapter, netdev, skb, staterr,
+				  rx_desc->wb.upper.vlan);
+
+next_desc:
+		rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
+
+		/* return some buffers to hardware, one at a time is too slow */
+		if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
+			adapter->alloc_rx_buf(rx_ring, cleaned_count,
+					      GFP_ATOMIC);
+			cleaned_count = 0;
+		}
+
+		/* use prefetched values */
+		rx_desc = next_rxd;
+		buffer_info = next_buffer;
+
+		staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+	}
+	rx_ring->next_to_clean = i;
+
+	cleaned_count = e1000_desc_unused(rx_ring);
+	if (cleaned_count)
+		adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
+
+	adapter->total_rx_bytes += total_rx_bytes;
+	adapter->total_rx_packets += total_rx_packets;
+	return cleaned;
+}
+
+static void e1000_put_txbuf(struct e1000_ring *tx_ring,
+			    struct e1000_buffer *buffer_info,
+			    bool drop)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+
+	if (buffer_info->dma) {
+		if (buffer_info->mapped_as_page)
+			dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
+				       buffer_info->length, DMA_TO_DEVICE);
+		else
+			dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
+					 buffer_info->length, DMA_TO_DEVICE);
+		buffer_info->dma = 0;
+	}
+	if (buffer_info->skb) {
+		if (drop)
+			dev_kfree_skb_any(buffer_info->skb);
+		else
+			dev_consume_skb_any(buffer_info->skb);
+		buffer_info->skb = NULL;
+	}
+	buffer_info->time_stamp = 0;
+}
+
+static void e1000_print_hw_hang(struct work_struct *work)
+{
+	struct e1000_adapter *adapter = container_of(work,
+						     struct e1000_adapter,
+						     print_hang_task);
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	unsigned int i = tx_ring->next_to_clean;
+	unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
+	struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
+	struct e1000_hw *hw = &adapter->hw;
+	u16 phy_status, phy_1000t_status, phy_ext_status;
+	u16 pci_status;
+
+	if (test_bit(__E1000_DOWN, &adapter->state))
+		return;
+
+	if (!adapter->tx_hang_recheck && (adapter->flags2 & FLAG2_DMA_BURST)) {
+		/* May be block on write-back, flush and detect again
+		 * flush pending descriptor writebacks to memory
+		 */
+		ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+		/* execute the writes immediately */
+		e1e_flush();
+		/* Due to rare timing issues, write to TIDV again to ensure
+		 * the write is successful
+		 */
+		ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+		/* execute the writes immediately */
+		e1e_flush();
+		adapter->tx_hang_recheck = true;
+		return;
+	}
+	adapter->tx_hang_recheck = false;
+
+	if (er32(TDH(0)) == er32(TDT(0))) {
+		e_dbg("false hang detected, ignoring\n");
+		return;
+	}
+
+	/* Real hang detected */
+	netif_stop_queue(netdev);
+
+	e1e_rphy(hw, MII_BMSR, &phy_status);
+	e1e_rphy(hw, MII_STAT1000, &phy_1000t_status);
+	e1e_rphy(hw, MII_ESTATUS, &phy_ext_status);
+
+	pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
+
+	/* detected Hardware unit hang */
+	e_err("Detected Hardware Unit Hang:\n"
+	      "  TDH                  <%x>\n"
+	      "  TDT                  <%x>\n"
+	      "  next_to_use          <%x>\n"
+	      "  next_to_clean        <%x>\n"
+	      "buffer_info[next_to_clean]:\n"
+	      "  time_stamp           <%lx>\n"
+	      "  next_to_watch        <%x>\n"
+	      "  jiffies              <%lx>\n"
+	      "  next_to_watch.status <%x>\n"
+	      "MAC Status             <%x>\n"
+	      "PHY Status             <%x>\n"
+	      "PHY 1000BASE-T Status  <%x>\n"
+	      "PHY Extended Status    <%x>\n"
+	      "PCI Status             <%x>\n",
+	      readl(tx_ring->head), readl(tx_ring->tail), tx_ring->next_to_use,
+	      tx_ring->next_to_clean, tx_ring->buffer_info[eop].time_stamp,
+	      eop, jiffies, eop_desc->upper.fields.status, er32(STATUS),
+	      phy_status, phy_1000t_status, phy_ext_status, pci_status);
+
+	e1000e_dump(adapter);
+
+	/* Suggest workaround for known h/w issue */
+	if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE))
+		e_err("Try turning off Tx pause (flow control) via ethtool\n");
+}
+
+/**
+ * e1000e_tx_hwtstamp_work - check for Tx time stamp
+ * @work: pointer to work struct
+ *
+ * This work function polls the TSYNCTXCTL valid bit to determine when a
+ * timestamp has been taken for the current stored skb.  The timestamp must
+ * be for this skb because only one such packet is allowed in the queue.
+ */
+static void e1000e_tx_hwtstamp_work(struct work_struct *work)
+{
+	struct e1000_adapter *adapter = container_of(work, struct e1000_adapter,
+						     tx_hwtstamp_work);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) {
+		struct sk_buff *skb = adapter->tx_hwtstamp_skb;
+		struct skb_shared_hwtstamps shhwtstamps;
+		u64 txstmp;
+
+		txstmp = er32(TXSTMPL);
+		txstmp |= (u64)er32(TXSTMPH) << 32;
+
+		e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp);
+
+		/* Clear the global tx_hwtstamp_skb pointer and force writes
+		 * prior to notifying the stack of a Tx timestamp.
+		 */
+		adapter->tx_hwtstamp_skb = NULL;
+		wmb(); /* force write prior to skb_tstamp_tx */
+
+		skb_tstamp_tx(skb, &shhwtstamps);
+		dev_consume_skb_any(skb);
+	} else if (time_after(jiffies, adapter->tx_hwtstamp_start
+			      + adapter->tx_timeout_factor * HZ)) {
+		dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
+		adapter->tx_hwtstamp_skb = NULL;
+		adapter->tx_hwtstamp_timeouts++;
+		e_warn("clearing Tx timestamp hang\n");
+	} else {
+		/* reschedule to check later */
+		schedule_work(&adapter->tx_hwtstamp_work);
+	}
+}
+
+/**
+ * e1000_clean_tx_irq - Reclaim resources after transmit completes
+ * @tx_ring: Tx descriptor ring
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_tx_desc *tx_desc, *eop_desc;
+	struct e1000_buffer *buffer_info;
+	unsigned int i, eop;
+	unsigned int count = 0;
+	unsigned int total_tx_bytes = 0, total_tx_packets = 0;
+	unsigned int bytes_compl = 0, pkts_compl = 0;
+
+	i = tx_ring->next_to_clean;
+	eop = tx_ring->buffer_info[i].next_to_watch;
+	eop_desc = E1000_TX_DESC(*tx_ring, eop);
+
+	while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
+	       (count < tx_ring->count)) {
+		bool cleaned = false;
+
+		dma_rmb();		/* read buffer_info after eop_desc */
+		for (; !cleaned; count++) {
+			tx_desc = E1000_TX_DESC(*tx_ring, i);
+			buffer_info = &tx_ring->buffer_info[i];
+			cleaned = (i == eop);
+
+			if (cleaned) {
+				total_tx_packets += buffer_info->segs;
+				total_tx_bytes += buffer_info->bytecount;
+				if (buffer_info->skb) {
+					bytes_compl += buffer_info->skb->len;
+					pkts_compl++;
+				}
+			}
+
+			e1000_put_txbuf(tx_ring, buffer_info, false);
+			tx_desc->upper.data = 0;
+
+			i++;
+			if (i == tx_ring->count)
+				i = 0;
+		}
+
+		if (i == tx_ring->next_to_use)
+			break;
+		eop = tx_ring->buffer_info[i].next_to_watch;
+		eop_desc = E1000_TX_DESC(*tx_ring, eop);
+	}
+
+	tx_ring->next_to_clean = i;
+
+	netdev_completed_queue(netdev, pkts_compl, bytes_compl);
+
+#define TX_WAKE_THRESHOLD 32
+	if (count && netif_carrier_ok(netdev) &&
+	    e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
+		/* Make sure that anybody stopping the queue after this
+		 * sees the new next_to_clean.
+		 */
+		smp_mb();
+
+		if (netif_queue_stopped(netdev) &&
+		    !(test_bit(__E1000_DOWN, &adapter->state))) {
+			netif_wake_queue(netdev);
+			++adapter->restart_queue;
+		}
+	}
+
+	if (adapter->detect_tx_hung) {
+		/* Detect a transmit hang in hardware, this serializes the
+		 * check with the clearing of time_stamp and movement of i
+		 */
+		adapter->detect_tx_hung = false;
+		if (tx_ring->buffer_info[i].time_stamp &&
+		    time_after(jiffies, tx_ring->buffer_info[i].time_stamp
+			       + (adapter->tx_timeout_factor * HZ)) &&
+		    !(er32(STATUS) & E1000_STATUS_TXOFF))
+			schedule_work(&adapter->print_hang_task);
+		else
+			adapter->tx_hang_recheck = false;
+	}
+	adapter->total_tx_bytes += total_tx_bytes;
+	adapter->total_tx_packets += total_tx_packets;
+	return count < tx_ring->count;
+}
+
+/**
+ * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
+ * @rx_ring: Rx descriptor ring
+ * @work_done: output parameter for indicating completed work
+ * @work_to_do: how many packets we can clean
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
+				  int work_to_do)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct e1000_hw *hw = &adapter->hw;
+	union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	struct e1000_buffer *buffer_info, *next_buffer;
+	struct e1000_ps_page *ps_page;
+	struct sk_buff *skb;
+	unsigned int i, j;
+	u32 length, staterr;
+	int cleaned_count = 0;
+	bool cleaned = false;
+	unsigned int total_rx_bytes = 0, total_rx_packets = 0;
+
+	i = rx_ring->next_to_clean;
+	rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
+	staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (staterr & E1000_RXD_STAT_DD) {
+		if (*work_done >= work_to_do)
+			break;
+		(*work_done)++;
+		skb = buffer_info->skb;
+		dma_rmb();	/* read descriptor and rx_buffer_info after status DD */
+
+		/* in the packet split case this is header only */
+		prefetch(skb->data - NET_IP_ALIGN);
+
+		i++;
+		if (i == rx_ring->count)
+			i = 0;
+		next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
+		prefetch(next_rxd);
+
+		next_buffer = &rx_ring->buffer_info[i];
+
+		cleaned = true;
+		cleaned_count++;
+		dma_unmap_single(&pdev->dev, buffer_info->dma,
+				 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
+		buffer_info->dma = 0;
+
+		/* see !EOP comment in other Rx routine */
+		if (!(staterr & E1000_RXD_STAT_EOP))
+			adapter->flags2 |= FLAG2_IS_DISCARDING;
+
+		if (adapter->flags2 & FLAG2_IS_DISCARDING) {
+			e_dbg("Packet Split buffers didn't pick up the full packet\n");
+			dev_kfree_skb_irq(skb);
+			if (staterr & E1000_RXD_STAT_EOP)
+				adapter->flags2 &= ~FLAG2_IS_DISCARDING;
+			goto next_desc;
+		}
+
+		if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
+			     !(netdev->features & NETIF_F_RXALL))) {
+			dev_kfree_skb_irq(skb);
+			goto next_desc;
+		}
+
+		length = le16_to_cpu(rx_desc->wb.middle.length0);
+
+		if (!length) {
+			e_dbg("Last part of the packet spanning multiple descriptors\n");
+			dev_kfree_skb_irq(skb);
+			goto next_desc;
+		}
+
+		/* Good Receive */
+		skb_put(skb, length);
+
+		{
+			/* this looks ugly, but it seems compiler issues make
+			 * it more efficient than reusing j
+			 */
+			int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
+
+			/* page alloc/put takes too long and effects small
+			 * packet throughput, so unsplit small packets and
+			 * save the alloc/put only valid in softirq (napi)
+			 * context to call kmap_*
+			 */
+			if (l1 && (l1 <= copybreak) &&
+			    ((length + l1) <= adapter->rx_ps_bsize0)) {
+				u8 *vaddr;
+
+				ps_page = &buffer_info->ps_pages[0];
+
+				/* there is no documentation about how to call
+				 * kmap_atomic, so we can't hold the mapping
+				 * very long
+				 */
+				dma_sync_single_for_cpu(&pdev->dev,
+							ps_page->dma,
+							PAGE_SIZE,
+							DMA_FROM_DEVICE);
+				vaddr = kmap_atomic(ps_page->page);
+				memcpy(skb_tail_pointer(skb), vaddr, l1);
+				kunmap_atomic(vaddr);
+				dma_sync_single_for_device(&pdev->dev,
+							   ps_page->dma,
+							   PAGE_SIZE,
+							   DMA_FROM_DEVICE);
+
+				/* remove the CRC */
+				if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
+					if (!(netdev->features & NETIF_F_RXFCS))
+						l1 -= 4;
+				}
+
+				skb_put(skb, l1);
+				goto copydone;
+			}	/* if */
+		}
+
+		for (j = 0; j < PS_PAGE_BUFFERS; j++) {
+			length = le16_to_cpu(rx_desc->wb.upper.length[j]);
+			if (!length)
+				break;
+
+			ps_page = &buffer_info->ps_pages[j];
+			dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
+				       DMA_FROM_DEVICE);
+			ps_page->dma = 0;
+			skb_fill_page_desc(skb, j, ps_page->page, 0, length);
+			ps_page->page = NULL;
+			skb->len += length;
+			skb->data_len += length;
+			skb->truesize += PAGE_SIZE;
+		}
+
+		/* strip the ethernet crc, problem is we're using pages now so
+		 * this whole operation can get a little cpu intensive
+		 */
+		if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
+			if (!(netdev->features & NETIF_F_RXFCS))
+				pskb_trim(skb, skb->len - 4);
+		}
+
+copydone:
+		total_rx_bytes += skb->len;
+		total_rx_packets++;
+
+		e1000_rx_checksum(adapter, staterr, skb);
+
+		e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
+
+		if (rx_desc->wb.upper.header_status &
+		    cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
+			adapter->rx_hdr_split++;
+
+		e1000_receive_skb(adapter, netdev, skb, staterr,
+				  rx_desc->wb.middle.vlan);
+
+next_desc:
+		rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
+		buffer_info->skb = NULL;
+
+		/* return some buffers to hardware, one at a time is too slow */
+		if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
+			adapter->alloc_rx_buf(rx_ring, cleaned_count,
+					      GFP_ATOMIC);
+			cleaned_count = 0;
+		}
+
+		/* use prefetched values */
+		rx_desc = next_rxd;
+		buffer_info = next_buffer;
+
+		staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
+	}
+	rx_ring->next_to_clean = i;
+
+	cleaned_count = e1000_desc_unused(rx_ring);
+	if (cleaned_count)
+		adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
+
+	adapter->total_rx_bytes += total_rx_bytes;
+	adapter->total_rx_packets += total_rx_packets;
+	return cleaned;
+}
+
+static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
+			       u16 length)
+{
+	bi->page = NULL;
+	skb->len += length;
+	skb->data_len += length;
+	skb->truesize += PAGE_SIZE;
+}
+
+/**
+ * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
+ * @rx_ring: Rx descriptor ring
+ * @work_done: output parameter for indicating completed work
+ * @work_to_do: how many packets we can clean
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
+				     int work_to_do)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev *pdev = adapter->pdev;
+	union e1000_rx_desc_extended *rx_desc, *next_rxd;
+	struct e1000_buffer *buffer_info, *next_buffer;
+	u32 length, staterr;
+	unsigned int i;
+	int cleaned_count = 0;
+	bool cleaned = false;
+	unsigned int total_rx_bytes = 0, total_rx_packets = 0;
+	struct skb_shared_info *shinfo;
+
+	i = rx_ring->next_to_clean;
+	rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
+	staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+	buffer_info = &rx_ring->buffer_info[i];
+
+	while (staterr & E1000_RXD_STAT_DD) {
+		struct sk_buff *skb;
+
+		if (*work_done >= work_to_do)
+			break;
+		(*work_done)++;
+		dma_rmb();	/* read descriptor and rx_buffer_info after status DD */
+
+		skb = buffer_info->skb;
+		buffer_info->skb = NULL;
+
+		++i;
+		if (i == rx_ring->count)
+			i = 0;
+		next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
+		prefetch(next_rxd);
+
+		next_buffer = &rx_ring->buffer_info[i];
+
+		cleaned = true;
+		cleaned_count++;
+		dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
+			       DMA_FROM_DEVICE);
+		buffer_info->dma = 0;
+
+		length = le16_to_cpu(rx_desc->wb.upper.length);
+
+		/* errors is only valid for DD + EOP descriptors */
+		if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
+			     ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
+			      !(netdev->features & NETIF_F_RXALL)))) {
+			/* recycle both page and skb */
+			buffer_info->skb = skb;
+			/* an error means any chain goes out the window too */
+			if (rx_ring->rx_skb_top)
+				dev_kfree_skb_irq(rx_ring->rx_skb_top);
+			rx_ring->rx_skb_top = NULL;
+			goto next_desc;
+		}
+#define rxtop (rx_ring->rx_skb_top)
+		if (!(staterr & E1000_RXD_STAT_EOP)) {
+			/* this descriptor is only the beginning (or middle) */
+			if (!rxtop) {
+				/* this is the beginning of a chain */
+				rxtop = skb;
+				skb_fill_page_desc(rxtop, 0, buffer_info->page,
+						   0, length);
+			} else {
+				/* this is the middle of a chain */
+				shinfo = skb_shinfo(rxtop);
+				skb_fill_page_desc(rxtop, shinfo->nr_frags,
+						   buffer_info->page, 0,
+						   length);
+				/* re-use the skb, only consumed the page */
+				buffer_info->skb = skb;
+			}
+			e1000_consume_page(buffer_info, rxtop, length);
+			goto next_desc;
+		} else {
+			if (rxtop) {
+				/* end of the chain */
+				shinfo = skb_shinfo(rxtop);
+				skb_fill_page_desc(rxtop, shinfo->nr_frags,
+						   buffer_info->page, 0,
+						   length);
+				/* re-use the current skb, we only consumed the
+				 * page
+				 */
+				buffer_info->skb = skb;
+				skb = rxtop;
+				rxtop = NULL;
+				e1000_consume_page(buffer_info, skb, length);
+			} else {
+				/* no chain, got EOP, this buf is the packet
+				 * copybreak to save the put_page/alloc_page
+				 */
+				if (length <= copybreak &&
+				    skb_tailroom(skb) >= length) {
+					u8 *vaddr;
+					vaddr = kmap_atomic(buffer_info->page);
+					memcpy(skb_tail_pointer(skb), vaddr,
+					       length);
+					kunmap_atomic(vaddr);
+					/* re-use the page, so don't erase
+					 * buffer_info->page
+					 */
+					skb_put(skb, length);
+				} else {
+					skb_fill_page_desc(skb, 0,
+							   buffer_info->page, 0,
+							   length);
+					e1000_consume_page(buffer_info, skb,
+							   length);
+				}
+			}
+		}
+
+		/* Receive Checksum Offload */
+		e1000_rx_checksum(adapter, staterr, skb);
+
+		e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
+
+		/* probably a little skewed due to removing CRC */
+		total_rx_bytes += skb->len;
+		total_rx_packets++;
+
+		/* eth type trans needs skb->data to point to something */
+		if (!pskb_may_pull(skb, ETH_HLEN)) {
+			e_err("pskb_may_pull failed.\n");
+			dev_kfree_skb_irq(skb);
+			goto next_desc;
+		}
+
+		e1000_receive_skb(adapter, netdev, skb, staterr,
+				  rx_desc->wb.upper.vlan);
+
+next_desc:
+		rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
+
+		/* return some buffers to hardware, one at a time is too slow */
+		if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
+			adapter->alloc_rx_buf(rx_ring, cleaned_count,
+					      GFP_ATOMIC);
+			cleaned_count = 0;
+		}
+
+		/* use prefetched values */
+		rx_desc = next_rxd;
+		buffer_info = next_buffer;
+
+		staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+	}
+	rx_ring->next_to_clean = i;
+
+	cleaned_count = e1000_desc_unused(rx_ring);
+	if (cleaned_count)
+		adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
+
+	adapter->total_rx_bytes += total_rx_bytes;
+	adapter->total_rx_packets += total_rx_packets;
+	return cleaned;
+}
+
+/**
+ * e1000_clean_rx_ring - Free Rx Buffers per Queue
+ * @rx_ring: Rx descriptor ring
+ **/
+static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct e1000_buffer *buffer_info;
+	struct e1000_ps_page *ps_page;
+	struct pci_dev *pdev = adapter->pdev;
+	unsigned int i, j;
+
+	/* Free all the Rx ring sk_buffs */
+	for (i = 0; i < rx_ring->count; i++) {
+		buffer_info = &rx_ring->buffer_info[i];
+		if (buffer_info->dma) {
+			if (adapter->clean_rx == e1000_clean_rx_irq)
+				dma_unmap_single(&pdev->dev, buffer_info->dma,
+						 adapter->rx_buffer_len,
+						 DMA_FROM_DEVICE);
+			else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
+				dma_unmap_page(&pdev->dev, buffer_info->dma,
+					       PAGE_SIZE, DMA_FROM_DEVICE);
+			else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
+				dma_unmap_single(&pdev->dev, buffer_info->dma,
+						 adapter->rx_ps_bsize0,
+						 DMA_FROM_DEVICE);
+			buffer_info->dma = 0;
+		}
+
+		if (buffer_info->page) {
+			put_page(buffer_info->page);
+			buffer_info->page = NULL;
+		}
+
+		if (buffer_info->skb) {
+			dev_kfree_skb(buffer_info->skb);
+			buffer_info->skb = NULL;
+		}
+
+		for (j = 0; j < PS_PAGE_BUFFERS; j++) {
+			ps_page = &buffer_info->ps_pages[j];
+			if (!ps_page->page)
+				break;
+			dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
+				       DMA_FROM_DEVICE);
+			ps_page->dma = 0;
+			put_page(ps_page->page);
+			ps_page->page = NULL;
+		}
+	}
+
+	/* there also may be some cached data from a chained receive */
+	if (rx_ring->rx_skb_top) {
+		dev_kfree_skb(rx_ring->rx_skb_top);
+		rx_ring->rx_skb_top = NULL;
+	}
+
+	/* Zero out the descriptor ring */
+	memset(rx_ring->desc, 0, rx_ring->size);
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+	adapter->flags2 &= ~FLAG2_IS_DISCARDING;
+}
+
+static void e1000e_downshift_workaround(struct work_struct *work)
+{
+	struct e1000_adapter *adapter = container_of(work,
+						     struct e1000_adapter,
+						     downshift_task);
+
+	if (test_bit(__E1000_DOWN, &adapter->state))
+		return;
+
+	e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
+}
+
+/**
+ * e1000_intr_msi - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 icr = er32(ICR);
+
+	/* read ICR disables interrupts using IAM */
+	if (icr & E1000_ICR_LSC) {
+		hw->mac.get_link_status = true;
+		/* ICH8 workaround-- Call gig speed drop workaround on cable
+		 * disconnect (LSC) before accessing any PHY registers
+		 */
+		if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
+		    (!(er32(STATUS) & E1000_STATUS_LU)))
+			schedule_work(&adapter->downshift_task);
+
+		/* 80003ES2LAN workaround-- For packet buffer work-around on
+		 * link down event; disable receives here in the ISR and reset
+		 * adapter in watchdog
+		 */
+		if (netif_carrier_ok(netdev) &&
+		    adapter->flags & FLAG_RX_NEEDS_RESTART) {
+			/* disable receives */
+			u32 rctl = er32(RCTL);
+
+			ew32(RCTL, rctl & ~E1000_RCTL_EN);
+			adapter->flags |= FLAG_RESTART_NOW;
+		}
+		/* guard against interrupt when we're going down */
+		if (!test_bit(__E1000_DOWN, &adapter->state))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
+	}
+
+	/* Reset on uncorrectable ECC error */
+	if ((icr & E1000_ICR_ECCER) && (hw->mac.type >= e1000_pch_lpt)) {
+		u32 pbeccsts = er32(PBECCSTS);
+
+		adapter->corr_errors +=
+		    pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK;
+		adapter->uncorr_errors +=
+		    (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >>
+		    E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT;
+
+		/* Do the reset outside of interrupt context */
+		schedule_work(&adapter->reset_task);
+
+		/* return immediately since reset is imminent */
+		return IRQ_HANDLED;
+	}
+
+	if (napi_schedule_prep(&adapter->napi)) {
+		adapter->total_tx_bytes = 0;
+		adapter->total_tx_packets = 0;
+		adapter->total_rx_bytes = 0;
+		adapter->total_rx_packets = 0;
+		__napi_schedule(&adapter->napi);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * e1000_intr - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t e1000_intr(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl, icr = er32(ICR);
+
+	if (!icr || test_bit(__E1000_DOWN, &adapter->state))
+		return IRQ_NONE;	/* Not our interrupt */
+
+	/* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
+	 * not set, then the adapter didn't send an interrupt
+	 */
+	if (!(icr & E1000_ICR_INT_ASSERTED))
+		return IRQ_NONE;
+
+	/* Interrupt Auto-Mask...upon reading ICR,
+	 * interrupts are masked.  No need for the
+	 * IMC write
+	 */
+
+	if (icr & E1000_ICR_LSC) {
+		hw->mac.get_link_status = true;
+		/* ICH8 workaround-- Call gig speed drop workaround on cable
+		 * disconnect (LSC) before accessing any PHY registers
+		 */
+		if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
+		    (!(er32(STATUS) & E1000_STATUS_LU)))
+			schedule_work(&adapter->downshift_task);
+
+		/* 80003ES2LAN workaround--
+		 * For packet buffer work-around on link down event;
+		 * disable receives here in the ISR and
+		 * reset adapter in watchdog
+		 */
+		if (netif_carrier_ok(netdev) &&
+		    (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
+			/* disable receives */
+			rctl = er32(RCTL);
+			ew32(RCTL, rctl & ~E1000_RCTL_EN);
+			adapter->flags |= FLAG_RESTART_NOW;
+		}
+		/* guard against interrupt when we're going down */
+		if (!test_bit(__E1000_DOWN, &adapter->state))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
+	}
+
+	/* Reset on uncorrectable ECC error */
+	if ((icr & E1000_ICR_ECCER) && (hw->mac.type >= e1000_pch_lpt)) {
+		u32 pbeccsts = er32(PBECCSTS);
+
+		adapter->corr_errors +=
+		    pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK;
+		adapter->uncorr_errors +=
+		    (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >>
+		    E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT;
+
+		/* Do the reset outside of interrupt context */
+		schedule_work(&adapter->reset_task);
+
+		/* return immediately since reset is imminent */
+		return IRQ_HANDLED;
+	}
+
+	if (napi_schedule_prep(&adapter->napi)) {
+		adapter->total_tx_bytes = 0;
+		adapter->total_tx_packets = 0;
+		adapter->total_rx_bytes = 0;
+		adapter->total_rx_packets = 0;
+		__napi_schedule(&adapter->napi);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t e1000_msix_other(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 icr = er32(ICR);
+
+	if (icr & adapter->eiac_mask)
+		ew32(ICS, (icr & adapter->eiac_mask));
+
+	if (icr & E1000_ICR_LSC) {
+		hw->mac.get_link_status = true;
+		/* guard against interrupt when we're going down */
+		if (!test_bit(__E1000_DOWN, &adapter->state))
+			mod_timer(&adapter->watchdog_timer, jiffies + 1);
+	}
+
+	if (!test_bit(__E1000_DOWN, &adapter->state))
+		ew32(IMS, E1000_IMS_OTHER | IMS_OTHER_MASK);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t e1000_intr_msix_tx(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+
+	adapter->total_tx_bytes = 0;
+	adapter->total_tx_packets = 0;
+
+	if (!e1000_clean_tx_irq(tx_ring))
+		/* Ring was not completely cleaned, so fire another interrupt */
+		ew32(ICS, tx_ring->ims_val);
+
+	if (!test_bit(__E1000_DOWN, &adapter->state))
+		ew32(IMS, adapter->tx_ring->ims_val);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_ring *rx_ring = adapter->rx_ring;
+
+	/* Write the ITR value calculated at the end of the
+	 * previous interrupt.
+	 */
+	if (rx_ring->set_itr) {
+		u32 itr = rx_ring->itr_val ?
+			  1000000000 / (rx_ring->itr_val * 256) : 0;
+
+		writel(itr, rx_ring->itr_register);
+		rx_ring->set_itr = 0;
+	}
+
+	if (napi_schedule_prep(&adapter->napi)) {
+		adapter->total_rx_bytes = 0;
+		adapter->total_rx_packets = 0;
+		__napi_schedule(&adapter->napi);
+	}
+	return IRQ_HANDLED;
+}
+
+/**
+ * e1000_configure_msix - Configure MSI-X hardware
+ * @adapter: board private structure
+ *
+ * e1000_configure_msix sets up the hardware to properly
+ * generate MSI-X interrupts.
+ **/
+static void e1000_configure_msix(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_ring *rx_ring = adapter->rx_ring;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	int vector = 0;
+	u32 ctrl_ext, ivar = 0;
+
+	adapter->eiac_mask = 0;
+
+	/* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
+	if (hw->mac.type == e1000_82574) {
+		u32 rfctl = er32(RFCTL);
+
+		rfctl |= E1000_RFCTL_ACK_DIS;
+		ew32(RFCTL, rfctl);
+	}
+
+	/* Configure Rx vector */
+	rx_ring->ims_val = E1000_IMS_RXQ0;
+	adapter->eiac_mask |= rx_ring->ims_val;
+	if (rx_ring->itr_val)
+		writel(1000000000 / (rx_ring->itr_val * 256),
+		       rx_ring->itr_register);
+	else
+		writel(1, rx_ring->itr_register);
+	ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
+
+	/* Configure Tx vector */
+	tx_ring->ims_val = E1000_IMS_TXQ0;
+	vector++;
+	if (tx_ring->itr_val)
+		writel(1000000000 / (tx_ring->itr_val * 256),
+		       tx_ring->itr_register);
+	else
+		writel(1, tx_ring->itr_register);
+	adapter->eiac_mask |= tx_ring->ims_val;
+	ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
+
+	/* set vector for Other Causes, e.g. link changes */
+	vector++;
+	ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
+	if (rx_ring->itr_val)
+		writel(1000000000 / (rx_ring->itr_val * 256),
+		       hw->hw_addr + E1000_EITR_82574(vector));
+	else
+		writel(1, hw->hw_addr + E1000_EITR_82574(vector));
+
+	/* Cause Tx interrupts on every write back */
+	ivar |= BIT(31);
+
+	ew32(IVAR, ivar);
+
+	/* enable MSI-X PBA support */
+	ctrl_ext = er32(CTRL_EXT) & ~E1000_CTRL_EXT_IAME;
+	ctrl_ext |= E1000_CTRL_EXT_PBA_CLR | E1000_CTRL_EXT_EIAME;
+	ew32(CTRL_EXT, ctrl_ext);
+	e1e_flush();
+}
+
+void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
+{
+	if (adapter->msix_entries) {
+		pci_disable_msix(adapter->pdev);
+		kfree(adapter->msix_entries);
+		adapter->msix_entries = NULL;
+	} else if (adapter->flags & FLAG_MSI_ENABLED) {
+		pci_disable_msi(adapter->pdev);
+		adapter->flags &= ~FLAG_MSI_ENABLED;
+	}
+}
+
+/**
+ * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
+ * @adapter: board private structure
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
+{
+	int err;
+	int i;
+
+	switch (adapter->int_mode) {
+	case E1000E_INT_MODE_MSIX:
+		if (adapter->flags & FLAG_HAS_MSIX) {
+			adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
+			adapter->msix_entries = kcalloc(adapter->num_vectors,
+							sizeof(struct
+							       msix_entry),
+							GFP_KERNEL);
+			if (adapter->msix_entries) {
+				struct e1000_adapter *a = adapter;
+
+				for (i = 0; i < adapter->num_vectors; i++)
+					adapter->msix_entries[i].entry = i;
+
+				err = pci_enable_msix_range(a->pdev,
+							    a->msix_entries,
+							    a->num_vectors,
+							    a->num_vectors);
+				if (err > 0)
+					return;
+			}
+			/* MSI-X failed, so fall through and try MSI */
+			e_err("Failed to initialize MSI-X interrupts.  Falling back to MSI interrupts.\n");
+			e1000e_reset_interrupt_capability(adapter);
+		}
+		adapter->int_mode = E1000E_INT_MODE_MSI;
+		fallthrough;
+	case E1000E_INT_MODE_MSI:
+		if (!pci_enable_msi(adapter->pdev)) {
+			adapter->flags |= FLAG_MSI_ENABLED;
+		} else {
+			adapter->int_mode = E1000E_INT_MODE_LEGACY;
+			e_err("Failed to initialize MSI interrupts.  Falling back to legacy interrupts.\n");
+		}
+		fallthrough;
+	case E1000E_INT_MODE_LEGACY:
+		/* Don't do anything; this is the system default */
+		break;
+	}
+
+	/* store the number of vectors being used */
+	adapter->num_vectors = 1;
+}
+
+/**
+ * e1000_request_msix - Initialize MSI-X interrupts
+ * @adapter: board private structure
+ *
+ * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
+ * kernel.
+ **/
+static int e1000_request_msix(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int err = 0, vector = 0;
+
+	if (strlen(netdev->name) < (IFNAMSIZ - 5))
+		snprintf(adapter->rx_ring->name,
+			 sizeof(adapter->rx_ring->name) - 1,
+			 "%.14s-rx-0", netdev->name);
+	else
+		memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
+	err = request_irq(adapter->msix_entries[vector].vector,
+			  e1000_intr_msix_rx, 0, adapter->rx_ring->name,
+			  netdev);
+	if (err)
+		return err;
+	adapter->rx_ring->itr_register = adapter->hw.hw_addr +
+	    E1000_EITR_82574(vector);
+	adapter->rx_ring->itr_val = adapter->itr;
+	vector++;
+
+	if (strlen(netdev->name) < (IFNAMSIZ - 5))
+		snprintf(adapter->tx_ring->name,
+			 sizeof(adapter->tx_ring->name) - 1,
+			 "%.14s-tx-0", netdev->name);
+	else
+		memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
+	err = request_irq(adapter->msix_entries[vector].vector,
+			  e1000_intr_msix_tx, 0, adapter->tx_ring->name,
+			  netdev);
+	if (err)
+		return err;
+	adapter->tx_ring->itr_register = adapter->hw.hw_addr +
+	    E1000_EITR_82574(vector);
+	adapter->tx_ring->itr_val = adapter->itr;
+	vector++;
+
+	err = request_irq(adapter->msix_entries[vector].vector,
+			  e1000_msix_other, 0, netdev->name, netdev);
+	if (err)
+		return err;
+
+	e1000_configure_msix(adapter);
+
+	return 0;
+}
+
+/**
+ * e1000_request_irq - initialize interrupts
+ * @adapter: board private structure
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int e1000_request_irq(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int err;
+
+	if (adapter->msix_entries) {
+		err = e1000_request_msix(adapter);
+		if (!err)
+			return err;
+		/* fall back to MSI */
+		e1000e_reset_interrupt_capability(adapter);
+		adapter->int_mode = E1000E_INT_MODE_MSI;
+		e1000e_set_interrupt_capability(adapter);
+	}
+	if (adapter->flags & FLAG_MSI_ENABLED) {
+		err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
+				  netdev->name, netdev);
+		if (!err)
+			return err;
+
+		/* fall back to legacy interrupt */
+		e1000e_reset_interrupt_capability(adapter);
+		adapter->int_mode = E1000E_INT_MODE_LEGACY;
+	}
+
+	err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
+			  netdev->name, netdev);
+	if (err)
+		e_err("Unable to allocate interrupt, Error: %d\n", err);
+
+	return err;
+}
+
+static void e1000_free_irq(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	if (adapter->msix_entries) {
+		int vector = 0;
+
+		free_irq(adapter->msix_entries[vector].vector, netdev);
+		vector++;
+
+		free_irq(adapter->msix_entries[vector].vector, netdev);
+		vector++;
+
+		/* Other Causes interrupt vector */
+		free_irq(adapter->msix_entries[vector].vector, netdev);
+		return;
+	}
+
+	free_irq(adapter->pdev->irq, netdev);
+}
+
+/**
+ * e1000_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ **/
+static void e1000_irq_disable(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	ew32(IMC, ~0);
+	if (adapter->msix_entries)
+		ew32(EIAC_82574, 0);
+	e1e_flush();
+
+	if (adapter->msix_entries) {
+		int i;
+
+		for (i = 0; i < adapter->num_vectors; i++)
+			synchronize_irq(adapter->msix_entries[i].vector);
+	} else {
+		synchronize_irq(adapter->pdev->irq);
+	}
+}
+
+/**
+ * e1000_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ **/
+static void e1000_irq_enable(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->msix_entries) {
+		ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
+		ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER |
+		     IMS_OTHER_MASK);
+	} else if (hw->mac.type >= e1000_pch_lpt) {
+		ew32(IMS, IMS_ENABLE_MASK | E1000_IMS_ECCER);
+	} else {
+		ew32(IMS, IMS_ENABLE_MASK);
+	}
+	e1e_flush();
+}
+
+/**
+ * e1000e_get_hw_control - get control of the h/w from f/w
+ * @adapter: address of board private structure
+ *
+ * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
+ * For ASF and Pass Through versions of f/w this means that
+ * the driver is loaded. For AMT version (only with 82573)
+ * of the f/w this means that the network i/f is open.
+ **/
+void e1000e_get_hw_control(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl_ext;
+	u32 swsm;
+
+	/* Let firmware know the driver has taken over */
+	if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
+		swsm = er32(SWSM);
+		ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
+	} else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
+		ctrl_ext = er32(CTRL_EXT);
+		ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
+	}
+}
+
+/**
+ * e1000e_release_hw_control - release control of the h/w to f/w
+ * @adapter: address of board private structure
+ *
+ * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
+ * For ASF and Pass Through versions of f/w this means that the
+ * driver is no longer loaded. For AMT version (only with 82573) i
+ * of the f/w this means that the network i/f is closed.
+ *
+ **/
+void e1000e_release_hw_control(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl_ext;
+	u32 swsm;
+
+	/* Let firmware taken over control of h/w */
+	if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
+		swsm = er32(SWSM);
+		ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
+	} else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
+		ctrl_ext = er32(CTRL_EXT);
+		ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
+	}
+}
+
+/**
+ * e1000_alloc_ring_dma - allocate memory for a ring structure
+ * @adapter: board private structure
+ * @ring: ring struct for which to allocate dma
+ **/
+static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
+				struct e1000_ring *ring)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
+					GFP_KERNEL);
+	if (!ring->desc)
+		return -ENOMEM;
+
+	return 0;
+}
+
+/**
+ * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @tx_ring: Tx descriptor ring
+ *
+ * Return 0 on success, negative on failure
+ **/
+int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	int err = -ENOMEM, size;
+
+	size = sizeof(struct e1000_buffer) * tx_ring->count;
+	tx_ring->buffer_info = vzalloc(size);
+	if (!tx_ring->buffer_info)
+		goto err;
+
+	/* round up to nearest 4K */
+	tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
+	tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+	err = e1000_alloc_ring_dma(adapter, tx_ring);
+	if (err)
+		goto err;
+
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+
+	return 0;
+err:
+	vfree(tx_ring->buffer_info);
+	e_err("Unable to allocate memory for the transmit descriptor ring\n");
+	return err;
+}
+
+/**
+ * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @rx_ring: Rx descriptor ring
+ *
+ * Returns 0 on success, negative on failure
+ **/
+int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct e1000_buffer *buffer_info;
+	int i, size, desc_len, err = -ENOMEM;
+
+	size = sizeof(struct e1000_buffer) * rx_ring->count;
+	rx_ring->buffer_info = vzalloc(size);
+	if (!rx_ring->buffer_info)
+		goto err;
+
+	for (i = 0; i < rx_ring->count; i++) {
+		buffer_info = &rx_ring->buffer_info[i];
+		buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
+						sizeof(struct e1000_ps_page),
+						GFP_KERNEL);
+		if (!buffer_info->ps_pages)
+			goto err_pages;
+	}
+
+	desc_len = sizeof(union e1000_rx_desc_packet_split);
+
+	/* Round up to nearest 4K */
+	rx_ring->size = rx_ring->count * desc_len;
+	rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+	err = e1000_alloc_ring_dma(adapter, rx_ring);
+	if (err)
+		goto err_pages;
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+	rx_ring->rx_skb_top = NULL;
+
+	return 0;
+
+err_pages:
+	for (i = 0; i < rx_ring->count; i++) {
+		buffer_info = &rx_ring->buffer_info[i];
+		kfree(buffer_info->ps_pages);
+	}
+err:
+	vfree(rx_ring->buffer_info);
+	e_err("Unable to allocate memory for the receive descriptor ring\n");
+	return err;
+}
+
+/**
+ * e1000_clean_tx_ring - Free Tx Buffers
+ * @tx_ring: Tx descriptor ring
+ **/
+static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct e1000_buffer *buffer_info;
+	unsigned long size;
+	unsigned int i;
+
+	for (i = 0; i < tx_ring->count; i++) {
+		buffer_info = &tx_ring->buffer_info[i];
+		e1000_put_txbuf(tx_ring, buffer_info, false);
+	}
+
+	netdev_reset_queue(adapter->netdev);
+	size = sizeof(struct e1000_buffer) * tx_ring->count;
+	memset(tx_ring->buffer_info, 0, size);
+
+	memset(tx_ring->desc, 0, tx_ring->size);
+
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+}
+
+/**
+ * e1000e_free_tx_resources - Free Tx Resources per Queue
+ * @tx_ring: Tx descriptor ring
+ *
+ * Free all transmit software resources
+ **/
+void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+
+	e1000_clean_tx_ring(tx_ring);
+
+	vfree(tx_ring->buffer_info);
+	tx_ring->buffer_info = NULL;
+
+	dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
+			  tx_ring->dma);
+	tx_ring->desc = NULL;
+}
+
+/**
+ * e1000e_free_rx_resources - Free Rx Resources
+ * @rx_ring: Rx descriptor ring
+ *
+ * Free all receive software resources
+ **/
+void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
+{
+	struct e1000_adapter *adapter = rx_ring->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	int i;
+
+	e1000_clean_rx_ring(rx_ring);
+
+	for (i = 0; i < rx_ring->count; i++)
+		kfree(rx_ring->buffer_info[i].ps_pages);
+
+	vfree(rx_ring->buffer_info);
+	rx_ring->buffer_info = NULL;
+
+	dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
+			  rx_ring->dma);
+	rx_ring->desc = NULL;
+}
+
+/**
+ * e1000_update_itr - update the dynamic ITR value based on statistics
+ * @itr_setting: current adapter->itr
+ * @packets: the number of packets during this measurement interval
+ * @bytes: the number of bytes during this measurement interval
+ *
+ *      Stores a new ITR value based on packets and byte
+ *      counts during the last interrupt.  The advantage of per interrupt
+ *      computation is faster updates and more accurate ITR for the current
+ *      traffic pattern.  Constants in this function were computed
+ *      based on theoretical maximum wire speed and thresholds were set based
+ *      on testing data as well as attempting to minimize response time
+ *      while increasing bulk throughput.  This functionality is controlled
+ *      by the InterruptThrottleRate module parameter.
+ **/
+static unsigned int e1000_update_itr(u16 itr_setting, int packets, int bytes)
+{
+	unsigned int retval = itr_setting;
+
+	if (packets == 0)
+		return itr_setting;
+
+	switch (itr_setting) {
+	case lowest_latency:
+		/* handle TSO and jumbo frames */
+		if (bytes / packets > 8000)
+			retval = bulk_latency;
+		else if ((packets < 5) && (bytes > 512))
+			retval = low_latency;
+		break;
+	case low_latency:	/* 50 usec aka 20000 ints/s */
+		if (bytes > 10000) {
+			/* this if handles the TSO accounting */
+			if (bytes / packets > 8000)
+				retval = bulk_latency;
+			else if ((packets < 10) || ((bytes / packets) > 1200))
+				retval = bulk_latency;
+			else if ((packets > 35))
+				retval = lowest_latency;
+		} else if (bytes / packets > 2000) {
+			retval = bulk_latency;
+		} else if (packets <= 2 && bytes < 512) {
+			retval = lowest_latency;
+		}
+		break;
+	case bulk_latency:	/* 250 usec aka 4000 ints/s */
+		if (bytes > 25000) {
+			if (packets > 35)
+				retval = low_latency;
+		} else if (bytes < 6000) {
+			retval = low_latency;
+		}
+		break;
+	}
+
+	return retval;
+}
+
+static void e1000_set_itr(struct e1000_adapter *adapter)
+{
+	u16 current_itr;
+	u32 new_itr = adapter->itr;
+
+	/* for non-gigabit speeds, just fix the interrupt rate at 4000 */
+	if (adapter->link_speed != SPEED_1000) {
+		new_itr = 4000;
+		goto set_itr_now;
+	}
+
+	if (adapter->flags2 & FLAG2_DISABLE_AIM) {
+		new_itr = 0;
+		goto set_itr_now;
+	}
+
+	adapter->tx_itr = e1000_update_itr(adapter->tx_itr,
+					   adapter->total_tx_packets,
+					   adapter->total_tx_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
+		adapter->tx_itr = low_latency;
+
+	adapter->rx_itr = e1000_update_itr(adapter->rx_itr,
+					   adapter->total_rx_packets,
+					   adapter->total_rx_bytes);
+	/* conservative mode (itr 3) eliminates the lowest_latency setting */
+	if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
+		adapter->rx_itr = low_latency;
+
+	current_itr = max(adapter->rx_itr, adapter->tx_itr);
+
+	/* counts and packets in update_itr are dependent on these numbers */
+	switch (current_itr) {
+	case lowest_latency:
+		new_itr = 70000;
+		break;
+	case low_latency:
+		new_itr = 20000;	/* aka hwitr = ~200 */
+		break;
+	case bulk_latency:
+		new_itr = 4000;
+		break;
+	default:
+		break;
+	}
+
+set_itr_now:
+	if (new_itr != adapter->itr) {
+		/* this attempts to bias the interrupt rate towards Bulk
+		 * by adding intermediate steps when interrupt rate is
+		 * increasing
+		 */
+		new_itr = new_itr > adapter->itr ?
+		    min(adapter->itr + (new_itr >> 2), new_itr) : new_itr;
+		adapter->itr = new_itr;
+		adapter->rx_ring->itr_val = new_itr;
+		if (adapter->msix_entries)
+			adapter->rx_ring->set_itr = 1;
+		else
+			e1000e_write_itr(adapter, new_itr);
+	}
+}
+
+/**
+ * e1000e_write_itr - write the ITR value to the appropriate registers
+ * @adapter: address of board private structure
+ * @itr: new ITR value to program
+ *
+ * e1000e_write_itr determines if the adapter is in MSI-X mode
+ * and, if so, writes the EITR registers with the ITR value.
+ * Otherwise, it writes the ITR value into the ITR register.
+ **/
+void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 new_itr = itr ? 1000000000 / (itr * 256) : 0;
+
+	if (adapter->msix_entries) {
+		int vector;
+
+		for (vector = 0; vector < adapter->num_vectors; vector++)
+			writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector));
+	} else {
+		ew32(ITR, new_itr);
+	}
+}
+
+/**
+ * e1000_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ **/
+static int e1000_alloc_queues(struct e1000_adapter *adapter)
+{
+	int size = sizeof(struct e1000_ring);
+
+	adapter->tx_ring = kzalloc(size, GFP_KERNEL);
+	if (!adapter->tx_ring)
+		goto err;
+	adapter->tx_ring->count = adapter->tx_ring_count;
+	adapter->tx_ring->adapter = adapter;
+
+	adapter->rx_ring = kzalloc(size, GFP_KERNEL);
+	if (!adapter->rx_ring)
+		goto err;
+	adapter->rx_ring->count = adapter->rx_ring_count;
+	adapter->rx_ring->adapter = adapter;
+
+	return 0;
+err:
+	e_err("Unable to allocate memory for queues\n");
+	kfree(adapter->rx_ring);
+	kfree(adapter->tx_ring);
+	return -ENOMEM;
+}
+
+/**
+ * e1000e_poll - NAPI Rx polling callback
+ * @napi: struct associated with this polling callback
+ * @budget: number of packets driver is allowed to process this poll
+ **/
+static int e1000e_poll(struct napi_struct *napi, int budget)
+{
+	struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
+						     napi);
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *poll_dev = adapter->netdev;
+	int tx_cleaned = 1, work_done = 0;
+
+	adapter = netdev_priv(poll_dev);
+
+	if (!adapter->msix_entries ||
+	    (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
+		tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
+
+	adapter->clean_rx(adapter->rx_ring, &work_done, budget);
+
+	if (!tx_cleaned || work_done == budget)
+		return budget;
+
+	/* Exit the polling mode, but don't re-enable interrupts if stack might
+	 * poll us due to busy-polling
+	 */
+	if (likely(napi_complete_done(napi, work_done))) {
+		if (adapter->itr_setting & 3)
+			e1000_set_itr(adapter);
+		if (!test_bit(__E1000_DOWN, &adapter->state)) {
+			if (adapter->msix_entries)
+				ew32(IMS, adapter->rx_ring->ims_val);
+			else
+				e1000_irq_enable(adapter);
+		}
+	}
+
+	return work_done;
+}
+
+static int e1000_vlan_rx_add_vid(struct net_device *netdev,
+				 __always_unused __be16 proto, u16 vid)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 vfta, index;
+
+	/* don't update vlan cookie if already programmed */
+	if ((adapter->hw.mng_cookie.status &
+	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+	    (vid == adapter->mng_vlan_id))
+		return 0;
+
+	/* add VID to filter table */
+	if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+		index = (vid >> 5) & 0x7F;
+		vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
+		vfta |= BIT((vid & 0x1F));
+		hw->mac.ops.write_vfta(hw, index, vfta);
+	}
+
+	set_bit(vid, adapter->active_vlans);
+
+	return 0;
+}
+
+static int e1000_vlan_rx_kill_vid(struct net_device *netdev,
+				  __always_unused __be16 proto, u16 vid)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 vfta, index;
+
+	if ((adapter->hw.mng_cookie.status &
+	     E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+	    (vid == adapter->mng_vlan_id)) {
+		/* release control to f/w */
+		e1000e_release_hw_control(adapter);
+		return 0;
+	}
+
+	/* remove VID from filter table */
+	if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+		index = (vid >> 5) & 0x7F;
+		vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
+		vfta &= ~BIT((vid & 0x1F));
+		hw->mac.ops.write_vfta(hw, index, vfta);
+	}
+
+	clear_bit(vid, adapter->active_vlans);
+
+	return 0;
+}
+
+/**
+ * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl;
+
+	if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+		/* disable VLAN receive filtering */
+		rctl = er32(RCTL);
+		rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
+		ew32(RCTL, rctl);
+
+		if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
+			e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
+					       adapter->mng_vlan_id);
+			adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
+		}
+	}
+}
+
+/**
+ * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl;
+
+	if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+		/* enable VLAN receive filtering */
+		rctl = er32(RCTL);
+		rctl |= E1000_RCTL_VFE;
+		rctl &= ~E1000_RCTL_CFIEN;
+		ew32(RCTL, rctl);
+	}
+}
+
+/**
+ * e1000e_vlan_strip_disable - helper to disable HW VLAN stripping
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl;
+
+	/* disable VLAN tag insert/strip */
+	ctrl = er32(CTRL);
+	ctrl &= ~E1000_CTRL_VME;
+	ew32(CTRL, ctrl);
+}
+
+/**
+ * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl;
+
+	/* enable VLAN tag insert/strip */
+	ctrl = er32(CTRL);
+	ctrl |= E1000_CTRL_VME;
+	ew32(CTRL, ctrl);
+}
+
+static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	u16 vid = adapter->hw.mng_cookie.vlan_id;
+	u16 old_vid = adapter->mng_vlan_id;
+
+	if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
+		e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
+		adapter->mng_vlan_id = vid;
+	}
+
+	if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
+		e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid);
+}
+
+static void e1000_restore_vlan(struct e1000_adapter *adapter)
+{
+	u16 vid;
+
+	e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0);
+
+	for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
+	    e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
+}
+
+static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 manc, manc2h, mdef, i, j;
+
+	if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
+		return;
+
+	manc = er32(MANC);
+
+	/* enable receiving management packets to the host. this will probably
+	 * generate destination unreachable messages from the host OS, but
+	 * the packets will be handled on SMBUS
+	 */
+	manc |= E1000_MANC_EN_MNG2HOST;
+	manc2h = er32(MANC2H);
+
+	switch (hw->mac.type) {
+	default:
+		manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
+		break;
+	case e1000_82574:
+	case e1000_82583:
+		/* Check if IPMI pass-through decision filter already exists;
+		 * if so, enable it.
+		 */
+		for (i = 0, j = 0; i < 8; i++) {
+			mdef = er32(MDEF(i));
+
+			/* Ignore filters with anything other than IPMI ports */
+			if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
+				continue;
+
+			/* Enable this decision filter in MANC2H */
+			if (mdef)
+				manc2h |= BIT(i);
+
+			j |= mdef;
+		}
+
+		if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
+			break;
+
+		/* Create new decision filter in an empty filter */
+		for (i = 0, j = 0; i < 8; i++)
+			if (er32(MDEF(i)) == 0) {
+				ew32(MDEF(i), (E1000_MDEF_PORT_623 |
+					       E1000_MDEF_PORT_664));
+				manc2h |= BIT(1);
+				j++;
+				break;
+			}
+
+		if (!j)
+			e_warn("Unable to create IPMI pass-through filter\n");
+		break;
+	}
+
+	ew32(MANC2H, manc2h);
+	ew32(MANC, manc);
+}
+
+/**
+ * e1000_configure_tx - Configure Transmit Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void e1000_configure_tx(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	u64 tdba;
+	u32 tdlen, tctl, tarc;
+
+	/* Setup the HW Tx Head and Tail descriptor pointers */
+	tdba = tx_ring->dma;
+	tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
+	ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
+	ew32(TDBAH(0), (tdba >> 32));
+	ew32(TDLEN(0), tdlen);
+	ew32(TDH(0), 0);
+	ew32(TDT(0), 0);
+	tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0);
+	tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0);
+
+	writel(0, tx_ring->head);
+	if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+		e1000e_update_tdt_wa(tx_ring, 0);
+	else
+		writel(0, tx_ring->tail);
+
+	/* Set the Tx Interrupt Delay register */
+	ew32(TIDV, adapter->tx_int_delay);
+	/* Tx irq moderation */
+	ew32(TADV, adapter->tx_abs_int_delay);
+
+	if (adapter->flags2 & FLAG2_DMA_BURST) {
+		u32 txdctl = er32(TXDCTL(0));
+
+		txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
+			    E1000_TXDCTL_WTHRESH);
+		/* set up some performance related parameters to encourage the
+		 * hardware to use the bus more efficiently in bursts, depends
+		 * on the tx_int_delay to be enabled,
+		 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
+		 * hthresh = 1 ==> prefetch when one or more available
+		 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
+		 * BEWARE: this seems to work but should be considered first if
+		 * there are Tx hangs or other Tx related bugs
+		 */
+		txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
+		ew32(TXDCTL(0), txdctl);
+	}
+	/* erratum work around: set txdctl the same for both queues */
+	ew32(TXDCTL(1), er32(TXDCTL(0)));
+
+	/* Program the Transmit Control Register */
+	tctl = er32(TCTL);
+	tctl &= ~E1000_TCTL_CT;
+	tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
+		(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
+
+	if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
+		tarc = er32(TARC(0));
+		/* set the speed mode bit, we'll clear it if we're not at
+		 * gigabit link later
+		 */
+#define SPEED_MODE_BIT BIT(21)
+		tarc |= SPEED_MODE_BIT;
+		ew32(TARC(0), tarc);
+	}
+
+	/* errata: program both queues to unweighted RR */
+	if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
+		tarc = er32(TARC(0));
+		tarc |= 1;
+		ew32(TARC(0), tarc);
+		tarc = er32(TARC(1));
+		tarc |= 1;
+		ew32(TARC(1), tarc);
+	}
+
+	/* Setup Transmit Descriptor Settings for eop descriptor */
+	adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
+
+	/* only set IDE if we are delaying interrupts using the timers */
+	if (adapter->tx_int_delay)
+		adapter->txd_cmd |= E1000_TXD_CMD_IDE;
+
+	/* enable Report Status bit */
+	adapter->txd_cmd |= E1000_TXD_CMD_RS;
+
+	ew32(TCTL, tctl);
+
+	hw->mac.ops.config_collision_dist(hw);
+
+	/* SPT and KBL Si errata workaround to avoid data corruption */
+	if (hw->mac.type == e1000_pch_spt) {
+		u32 reg_val;
+
+		reg_val = er32(IOSFPC);
+		reg_val |= E1000_RCTL_RDMTS_HEX;
+		ew32(IOSFPC, reg_val);
+
+		reg_val = er32(TARC(0));
+		/* SPT and KBL Si errata workaround to avoid Tx hang.
+		 * Dropping the number of outstanding requests from
+		 * 3 to 2 in order to avoid a buffer overrun.
+		 */
+		reg_val &= ~E1000_TARC0_CB_MULTIQ_3_REQ;
+		reg_val |= E1000_TARC0_CB_MULTIQ_2_REQ;
+		ew32(TARC(0), reg_val);
+	}
+}
+
+#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
+			   (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
+
+/**
+ * e1000_setup_rctl - configure the receive control registers
+ * @adapter: Board private structure
+ **/
+static void e1000_setup_rctl(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl, rfctl;
+	u32 pages = 0;
+
+	/* Workaround Si errata on PCHx - configure jumbo frame flow.
+	 * If jumbo frames not set, program related MAC/PHY registers
+	 * to h/w defaults
+	 */
+	if (hw->mac.type >= e1000_pch2lan) {
+		s32 ret_val;
+
+		if (adapter->netdev->mtu > ETH_DATA_LEN)
+			ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
+		else
+			ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
+
+		if (ret_val)
+			e_dbg("failed to enable|disable jumbo frame workaround mode\n");
+	}
+
+	/* Program MC offset vector base */
+	rctl = er32(RCTL);
+	rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
+	rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
+	    E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
+	    (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
+
+	/* Do not Store bad packets */
+	rctl &= ~E1000_RCTL_SBP;
+
+	/* Enable Long Packet receive */
+	if (adapter->netdev->mtu <= ETH_DATA_LEN)
+		rctl &= ~E1000_RCTL_LPE;
+	else
+		rctl |= E1000_RCTL_LPE;
+
+	/* Some systems expect that the CRC is included in SMBUS traffic. The
+	 * hardware strips the CRC before sending to both SMBUS (BMC) and to
+	 * host memory when this is enabled
+	 */
+	if (adapter->flags2 & FLAG2_CRC_STRIPPING)
+		rctl |= E1000_RCTL_SECRC;
+
+	/* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
+	if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
+		u16 phy_data;
+
+		e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
+		phy_data &= 0xfff8;
+		phy_data |= BIT(2);
+		e1e_wphy(hw, PHY_REG(770, 26), phy_data);
+
+		e1e_rphy(hw, 22, &phy_data);
+		phy_data &= 0x0fff;
+		phy_data |= BIT(14);
+		e1e_wphy(hw, 0x10, 0x2823);
+		e1e_wphy(hw, 0x11, 0x0003);
+		e1e_wphy(hw, 22, phy_data);
+	}
+
+	/* Setup buffer sizes */
+	rctl &= ~E1000_RCTL_SZ_4096;
+	rctl |= E1000_RCTL_BSEX;
+	switch (adapter->rx_buffer_len) {
+	case 2048:
+	default:
+		rctl |= E1000_RCTL_SZ_2048;
+		rctl &= ~E1000_RCTL_BSEX;
+		break;
+	case 4096:
+		rctl |= E1000_RCTL_SZ_4096;
+		break;
+	case 8192:
+		rctl |= E1000_RCTL_SZ_8192;
+		break;
+	case 16384:
+		rctl |= E1000_RCTL_SZ_16384;
+		break;
+	}
+
+	/* Enable Extended Status in all Receive Descriptors */
+	rfctl = er32(RFCTL);
+	rfctl |= E1000_RFCTL_EXTEN;
+	ew32(RFCTL, rfctl);
+
+	/* 82571 and greater support packet-split where the protocol
+	 * header is placed in skb->data and the packet data is
+	 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
+	 * In the case of a non-split, skb->data is linearly filled,
+	 * followed by the page buffers.  Therefore, skb->data is
+	 * sized to hold the largest protocol header.
+	 *
+	 * allocations using alloc_page take too long for regular MTU
+	 * so only enable packet split for jumbo frames
+	 *
+	 * Using pages when the page size is greater than 16k wastes
+	 * a lot of memory, since we allocate 3 pages at all times
+	 * per packet.
+	 */
+	pages = PAGE_USE_COUNT(adapter->netdev->mtu);
+	if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
+		adapter->rx_ps_pages = pages;
+	else
+		adapter->rx_ps_pages = 0;
+
+	if (adapter->rx_ps_pages) {
+		u32 psrctl = 0;
+
+		/* Enable Packet split descriptors */
+		rctl |= E1000_RCTL_DTYP_PS;
+
+		psrctl |= adapter->rx_ps_bsize0 >> E1000_PSRCTL_BSIZE0_SHIFT;
+
+		switch (adapter->rx_ps_pages) {
+		case 3:
+			psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE3_SHIFT;
+			fallthrough;
+		case 2:
+			psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE2_SHIFT;
+			fallthrough;
+		case 1:
+			psrctl |= PAGE_SIZE >> E1000_PSRCTL_BSIZE1_SHIFT;
+			break;
+		}
+
+		ew32(PSRCTL, psrctl);
+	}
+
+	/* This is useful for sniffing bad packets. */
+	if (adapter->netdev->features & NETIF_F_RXALL) {
+		/* UPE and MPE will be handled by normal PROMISC logic
+		 * in e1000e_set_rx_mode
+		 */
+		rctl |= (E1000_RCTL_SBP |	/* Receive bad packets */
+			 E1000_RCTL_BAM |	/* RX All Bcast Pkts */
+			 E1000_RCTL_PMCF);	/* RX All MAC Ctrl Pkts */
+
+		rctl &= ~(E1000_RCTL_VFE |	/* Disable VLAN filter */
+			  E1000_RCTL_DPF |	/* Allow filtered pause */
+			  E1000_RCTL_CFIEN);	/* Dis VLAN CFIEN Filter */
+		/* Do not mess with E1000_CTRL_VME, it affects transmit as well,
+		 * and that breaks VLANs.
+		 */
+	}
+
+	ew32(RCTL, rctl);
+	/* just started the receive unit, no need to restart */
+	adapter->flags &= ~FLAG_RESTART_NOW;
+}
+
+/**
+ * e1000_configure_rx - Configure Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void e1000_configure_rx(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_ring *rx_ring = adapter->rx_ring;
+	u64 rdba;
+	u32 rdlen, rctl, rxcsum, ctrl_ext;
+
+	if (adapter->rx_ps_pages) {
+		/* this is a 32 byte descriptor */
+		rdlen = rx_ring->count *
+		    sizeof(union e1000_rx_desc_packet_split);
+		adapter->clean_rx = e1000_clean_rx_irq_ps;
+		adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
+	} else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
+		rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
+		adapter->clean_rx = e1000_clean_jumbo_rx_irq;
+		adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
+	} else {
+		rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
+		adapter->clean_rx = e1000_clean_rx_irq;
+		adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
+	}
+
+	/* disable receives while setting up the descriptors */
+	rctl = er32(RCTL);
+	if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
+		ew32(RCTL, rctl & ~E1000_RCTL_EN);
+	e1e_flush();
+	usleep_range(10000, 11000);
+
+	if (adapter->flags2 & FLAG2_DMA_BURST) {
+		/* set the writeback threshold (only takes effect if the RDTR
+		 * is set). set GRAN=1 and write back up to 0x4 worth, and
+		 * enable prefetching of 0x20 Rx descriptors
+		 * granularity = 01
+		 * wthresh = 04,
+		 * hthresh = 04,
+		 * pthresh = 0x20
+		 */
+		ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
+		ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
+	}
+
+	/* set the Receive Delay Timer Register */
+	ew32(RDTR, adapter->rx_int_delay);
+
+	/* irq moderation */
+	ew32(RADV, adapter->rx_abs_int_delay);
+	if ((adapter->itr_setting != 0) && (adapter->itr != 0))
+		e1000e_write_itr(adapter, adapter->itr);
+
+	ctrl_ext = er32(CTRL_EXT);
+	/* Auto-Mask interrupts upon ICR access */
+	ctrl_ext |= E1000_CTRL_EXT_IAME;
+	ew32(IAM, 0xffffffff);
+	ew32(CTRL_EXT, ctrl_ext);
+	e1e_flush();
+
+	/* Setup the HW Rx Head and Tail Descriptor Pointers and
+	 * the Base and Length of the Rx Descriptor Ring
+	 */
+	rdba = rx_ring->dma;
+	ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
+	ew32(RDBAH(0), (rdba >> 32));
+	ew32(RDLEN(0), rdlen);
+	ew32(RDH(0), 0);
+	ew32(RDT(0), 0);
+	rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0);
+	rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0);
+
+	writel(0, rx_ring->head);
+	if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+		e1000e_update_rdt_wa(rx_ring, 0);
+	else
+		writel(0, rx_ring->tail);
+
+	/* Enable Receive Checksum Offload for TCP and UDP */
+	rxcsum = er32(RXCSUM);
+	if (adapter->netdev->features & NETIF_F_RXCSUM)
+		rxcsum |= E1000_RXCSUM_TUOFL;
+	else
+		rxcsum &= ~E1000_RXCSUM_TUOFL;
+	ew32(RXCSUM, rxcsum);
+
+	/* With jumbo frames, excessive C-state transition latencies result
+	 * in dropped transactions.
+	 */
+	if (adapter->netdev->mtu > ETH_DATA_LEN) {
+		u32 lat =
+		    ((er32(PBA) & E1000_PBA_RXA_MASK) * 1024 -
+		     adapter->max_frame_size) * 8 / 1000;
+
+		if (adapter->flags & FLAG_IS_ICH) {
+			u32 rxdctl = er32(RXDCTL(0));
+
+			ew32(RXDCTL(0), rxdctl | 0x3 | BIT(8));
+		}
+
+		dev_info(&adapter->pdev->dev,
+			 "Some CPU C-states have been disabled in order to enable jumbo frames\n");
+		cpu_latency_qos_update_request(&adapter->pm_qos_req, lat);
+	} else {
+		cpu_latency_qos_update_request(&adapter->pm_qos_req,
+					       PM_QOS_DEFAULT_VALUE);
+	}
+
+	/* Enable Receives */
+	ew32(RCTL, rctl);
+}
+
+/**
+ * e1000e_write_mc_addr_list - write multicast addresses to MTA
+ * @netdev: network interface device structure
+ *
+ * Writes multicast address list to the MTA hash table.
+ * Returns: -ENOMEM on failure
+ *                0 on no addresses written
+ *                X on writing X addresses to MTA
+ */
+static int e1000e_write_mc_addr_list(struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct netdev_hw_addr *ha;
+	u8 *mta_list;
+	int i;
+
+	if (netdev_mc_empty(netdev)) {
+		/* nothing to program, so clear mc list */
+		hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
+		return 0;
+	}
+
+	mta_list = kcalloc(netdev_mc_count(netdev), ETH_ALEN, GFP_ATOMIC);
+	if (!mta_list)
+		return -ENOMEM;
+
+	/* update_mc_addr_list expects a packed array of only addresses. */
+	i = 0;
+	netdev_for_each_mc_addr(ha, netdev)
+	    memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
+
+	hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
+	kfree(mta_list);
+
+	return netdev_mc_count(netdev);
+}
+
+/**
+ * e1000e_write_uc_addr_list - write unicast addresses to RAR table
+ * @netdev: network interface device structure
+ *
+ * Writes unicast address list to the RAR table.
+ * Returns: -ENOMEM on failure/insufficient address space
+ *                0 on no addresses written
+ *                X on writing X addresses to the RAR table
+ **/
+static int e1000e_write_uc_addr_list(struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	unsigned int rar_entries;
+	int count = 0;
+
+	rar_entries = hw->mac.ops.rar_get_count(hw);
+
+	/* save a rar entry for our hardware address */
+	rar_entries--;
+
+	/* save a rar entry for the LAA workaround */
+	if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
+		rar_entries--;
+
+	/* return ENOMEM indicating insufficient memory for addresses */
+	if (netdev_uc_count(netdev) > rar_entries)
+		return -ENOMEM;
+
+	if (!netdev_uc_empty(netdev) && rar_entries) {
+		struct netdev_hw_addr *ha;
+
+		/* write the addresses in reverse order to avoid write
+		 * combining
+		 */
+		netdev_for_each_uc_addr(ha, netdev) {
+			int ret_val;
+
+			if (!rar_entries)
+				break;
+			ret_val = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
+			if (ret_val < 0)
+				return -ENOMEM;
+			count++;
+		}
+	}
+
+	/* zero out the remaining RAR entries not used above */
+	for (; rar_entries > 0; rar_entries--) {
+		ew32(RAH(rar_entries), 0);
+		ew32(RAL(rar_entries), 0);
+	}
+	e1e_flush();
+
+	return count;
+}
+
+/**
+ * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
+ * address list or the network interface flags are updated.  This routine is
+ * responsible for configuring the hardware for proper unicast, multicast,
+ * promiscuous mode, and all-multi behavior.
+ **/
+static void e1000e_set_rx_mode(struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 rctl;
+
+	if (pm_runtime_suspended(netdev->dev.parent))
+		return;
+
+	/* Check for Promiscuous and All Multicast modes */
+	rctl = er32(RCTL);
+
+	/* clear the affected bits */
+	rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+
+	if (netdev->flags & IFF_PROMISC) {
+		rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
+		/* Do not hardware filter VLANs in promisc mode */
+		e1000e_vlan_filter_disable(adapter);
+	} else {
+		int count;
+
+		if (netdev->flags & IFF_ALLMULTI) {
+			rctl |= E1000_RCTL_MPE;
+		} else {
+			/* Write addresses to the MTA, if the attempt fails
+			 * then we should just turn on promiscuous mode so
+			 * that we can at least receive multicast traffic
+			 */
+			count = e1000e_write_mc_addr_list(netdev);
+			if (count < 0)
+				rctl |= E1000_RCTL_MPE;
+		}
+		e1000e_vlan_filter_enable(adapter);
+		/* Write addresses to available RAR registers, if there is not
+		 * sufficient space to store all the addresses then enable
+		 * unicast promiscuous mode
+		 */
+		count = e1000e_write_uc_addr_list(netdev);
+		if (count < 0)
+			rctl |= E1000_RCTL_UPE;
+	}
+
+	ew32(RCTL, rctl);
+
+	if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
+		e1000e_vlan_strip_enable(adapter);
+	else
+		e1000e_vlan_strip_disable(adapter);
+}
+
+static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 mrqc, rxcsum;
+	u32 rss_key[10];
+	int i;
+
+	netdev_rss_key_fill(rss_key, sizeof(rss_key));
+	for (i = 0; i < 10; i++)
+		ew32(RSSRK(i), rss_key[i]);
+
+	/* Direct all traffic to queue 0 */
+	for (i = 0; i < 32; i++)
+		ew32(RETA(i), 0);
+
+	/* Disable raw packet checksumming so that RSS hash is placed in
+	 * descriptor on writeback.
+	 */
+	rxcsum = er32(RXCSUM);
+	rxcsum |= E1000_RXCSUM_PCSD;
+
+	ew32(RXCSUM, rxcsum);
+
+	mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
+		E1000_MRQC_RSS_FIELD_IPV4_TCP |
+		E1000_MRQC_RSS_FIELD_IPV6 |
+		E1000_MRQC_RSS_FIELD_IPV6_TCP |
+		E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
+
+	ew32(MRQC, mrqc);
+}
+
+/**
+ * e1000e_get_base_timinca - get default SYSTIM time increment attributes
+ * @adapter: board private structure
+ * @timinca: pointer to returned time increment attributes
+ *
+ * Get attributes for incrementing the System Time Register SYSTIML/H at
+ * the default base frequency, and set the cyclecounter shift value.
+ **/
+s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 incvalue, incperiod, shift;
+
+	/* Make sure clock is enabled on I217/I218/I219  before checking
+	 * the frequency
+	 */
+	if ((hw->mac.type >= e1000_pch_lpt) &&
+	    !(er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) &&
+	    !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) {
+		u32 fextnvm7 = er32(FEXTNVM7);
+
+		if (!(fextnvm7 & BIT(0))) {
+			ew32(FEXTNVM7, fextnvm7 | BIT(0));
+			e1e_flush();
+		}
+	}
+
+	switch (hw->mac.type) {
+	case e1000_pch2lan:
+		/* Stable 96MHz frequency */
+		incperiod = INCPERIOD_96MHZ;
+		incvalue = INCVALUE_96MHZ;
+		shift = INCVALUE_SHIFT_96MHZ;
+		adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHZ;
+		break;
+	case e1000_pch_lpt:
+		if (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI) {
+			/* Stable 96MHz frequency */
+			incperiod = INCPERIOD_96MHZ;
+			incvalue = INCVALUE_96MHZ;
+			shift = INCVALUE_SHIFT_96MHZ;
+			adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHZ;
+		} else {
+			/* Stable 25MHz frequency */
+			incperiod = INCPERIOD_25MHZ;
+			incvalue = INCVALUE_25MHZ;
+			shift = INCVALUE_SHIFT_25MHZ;
+			adapter->cc.shift = shift;
+		}
+		break;
+	case e1000_pch_spt:
+		/* Stable 24MHz frequency */
+		incperiod = INCPERIOD_24MHZ;
+		incvalue = INCVALUE_24MHZ;
+		shift = INCVALUE_SHIFT_24MHZ;
+		adapter->cc.shift = shift;
+		break;
+	case e1000_pch_cnp:
+	case e1000_pch_tgp:
+	case e1000_pch_adp:
+	case e1000_pch_mtp:
+	case e1000_pch_lnp:
+		if (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI) {
+			/* Stable 24MHz frequency */
+			incperiod = INCPERIOD_24MHZ;
+			incvalue = INCVALUE_24MHZ;
+			shift = INCVALUE_SHIFT_24MHZ;
+			adapter->cc.shift = shift;
+		} else {
+			/* Stable 38400KHz frequency */
+			incperiod = INCPERIOD_38400KHZ;
+			incvalue = INCVALUE_38400KHZ;
+			shift = INCVALUE_SHIFT_38400KHZ;
+			adapter->cc.shift = shift;
+		}
+		break;
+	case e1000_82574:
+	case e1000_82583:
+		/* Stable 25MHz frequency */
+		incperiod = INCPERIOD_25MHZ;
+		incvalue = INCVALUE_25MHZ;
+		shift = INCVALUE_SHIFT_25MHZ;
+		adapter->cc.shift = shift;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	*timinca = ((incperiod << E1000_TIMINCA_INCPERIOD_SHIFT) |
+		    ((incvalue << shift) & E1000_TIMINCA_INCVALUE_MASK));
+
+	return 0;
+}
+
+/**
+ * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable
+ * @adapter: board private structure
+ * @config: timestamp configuration
+ *
+ * Outgoing time stamping can be enabled and disabled. Play nice and
+ * disable it when requested, although it shouldn't cause any overhead
+ * when no packet needs it. At most one packet in the queue may be
+ * marked for time stamping, otherwise it would be impossible to tell
+ * for sure to which packet the hardware time stamp belongs.
+ *
+ * Incoming time stamping has to be configured via the hardware filters.
+ * Not all combinations are supported, in particular event type has to be
+ * specified. Matching the kind of event packet is not supported, with the
+ * exception of "all V2 events regardless of level 2 or 4".
+ **/
+static int e1000e_config_hwtstamp(struct e1000_adapter *adapter,
+				  struct hwtstamp_config *config)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED;
+	u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED;
+	u32 rxmtrl = 0;
+	u16 rxudp = 0;
+	bool is_l4 = false;
+	bool is_l2 = false;
+	u32 regval;
+
+	if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
+		return -EINVAL;
+
+	switch (config->tx_type) {
+	case HWTSTAMP_TX_OFF:
+		tsync_tx_ctl = 0;
+		break;
+	case HWTSTAMP_TX_ON:
+		break;
+	default:
+		return -ERANGE;
+	}
+
+	switch (config->rx_filter) {
+	case HWTSTAMP_FILTER_NONE:
+		tsync_rx_ctl = 0;
+		break;
+	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1;
+		rxmtrl = E1000_RXMTRL_PTP_V1_SYNC_MESSAGE;
+		is_l4 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1;
+		rxmtrl = E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE;
+		is_l4 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+		/* Also time stamps V2 L2 Path Delay Request/Response */
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2;
+		rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE;
+		is_l2 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+		/* Also time stamps V2 L2 Path Delay Request/Response. */
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2;
+		rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE;
+		is_l2 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+		/* Hardware cannot filter just V2 L4 Sync messages */
+		fallthrough;
+	case HWTSTAMP_FILTER_PTP_V2_SYNC:
+		/* Also time stamps V2 Path Delay Request/Response. */
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2;
+		rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE;
+		is_l2 = true;
+		is_l4 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+		/* Hardware cannot filter just V2 L4 Delay Request messages */
+		fallthrough;
+	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+		/* Also time stamps V2 Path Delay Request/Response. */
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2;
+		rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE;
+		is_l2 = true;
+		is_l4 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+		/* Hardware cannot filter just V2 L4 or L2 Event messages */
+		fallthrough;
+	case HWTSTAMP_FILTER_PTP_V2_EVENT:
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2;
+		config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
+		is_l2 = true;
+		is_l4 = true;
+		break;
+	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+		/* For V1, the hardware can only filter Sync messages or
+		 * Delay Request messages but not both so fall-through to
+		 * time stamp all packets.
+		 */
+		fallthrough;
+	case HWTSTAMP_FILTER_NTP_ALL:
+	case HWTSTAMP_FILTER_ALL:
+		is_l2 = true;
+		is_l4 = true;
+		tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL;
+		config->rx_filter = HWTSTAMP_FILTER_ALL;
+		break;
+	default:
+		return -ERANGE;
+	}
+
+	adapter->hwtstamp_config = *config;
+
+	/* enable/disable Tx h/w time stamping */
+	regval = er32(TSYNCTXCTL);
+	regval &= ~E1000_TSYNCTXCTL_ENABLED;
+	regval |= tsync_tx_ctl;
+	ew32(TSYNCTXCTL, regval);
+	if ((er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) !=
+	    (regval & E1000_TSYNCTXCTL_ENABLED)) {
+		e_err("Timesync Tx Control register not set as expected\n");
+		return -EAGAIN;
+	}
+
+	/* enable/disable Rx h/w time stamping */
+	regval = er32(TSYNCRXCTL);
+	regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK);
+	regval |= tsync_rx_ctl;
+	ew32(TSYNCRXCTL, regval);
+	if ((er32(TSYNCRXCTL) & (E1000_TSYNCRXCTL_ENABLED |
+				 E1000_TSYNCRXCTL_TYPE_MASK)) !=
+	    (regval & (E1000_TSYNCRXCTL_ENABLED |
+		       E1000_TSYNCRXCTL_TYPE_MASK))) {
+		e_err("Timesync Rx Control register not set as expected\n");
+		return -EAGAIN;
+	}
+
+	/* L2: define ethertype filter for time stamped packets */
+	if (is_l2)
+		rxmtrl |= ETH_P_1588;
+
+	/* define which PTP packets get time stamped */
+	ew32(RXMTRL, rxmtrl);
+
+	/* Filter by destination port */
+	if (is_l4) {
+		rxudp = PTP_EV_PORT;
+		cpu_to_be16s(&rxudp);
+	}
+	ew32(RXUDP, rxudp);
+
+	e1e_flush();
+
+	/* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */
+	er32(RXSTMPH);
+	er32(TXSTMPH);
+
+	return 0;
+}
+
+/**
+ * e1000_configure - configure the hardware for Rx and Tx
+ * @adapter: private board structure
+ **/
+static void e1000_configure(struct e1000_adapter *adapter)
+{
+	struct e1000_ring *rx_ring = adapter->rx_ring;
+
+	e1000e_set_rx_mode(adapter->netdev);
+
+	e1000_restore_vlan(adapter);
+	e1000_init_manageability_pt(adapter);
+
+	e1000_configure_tx(adapter);
+
+	if (adapter->netdev->features & NETIF_F_RXHASH)
+		e1000e_setup_rss_hash(adapter);
+	e1000_setup_rctl(adapter);
+	e1000_configure_rx(adapter);
+	adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
+}
+
+/**
+ * e1000e_power_up_phy - restore link in case the phy was powered down
+ * @adapter: address of board private structure
+ *
+ * The phy may be powered down to save power and turn off link when the
+ * driver is unloaded and wake on lan is not enabled (among others)
+ * *** this routine MUST be followed by a call to e1000e_reset ***
+ **/
+void e1000e_power_up_phy(struct e1000_adapter *adapter)
+{
+	if (adapter->hw.phy.ops.power_up)
+		adapter->hw.phy.ops.power_up(&adapter->hw);
+
+	adapter->hw.mac.ops.setup_link(&adapter->hw);
+}
+
+/**
+ * e1000_power_down_phy - Power down the PHY
+ * @adapter: board private structure
+ *
+ * Power down the PHY so no link is implied when interface is down.
+ * The PHY cannot be powered down if management or WoL is active.
+ */
+static void e1000_power_down_phy(struct e1000_adapter *adapter)
+{
+	if (adapter->hw.phy.ops.power_down)
+		adapter->hw.phy.ops.power_down(&adapter->hw);
+}
+
+/**
+ * e1000_flush_tx_ring - remove all descriptors from the tx_ring
+ * @adapter: board private structure
+ *
+ * We want to clear all pending descriptors from the TX ring.
+ * zeroing happens when the HW reads the regs. We  assign the ring itself as
+ * the data of the next descriptor. We don't care about the data we are about
+ * to reset the HW.
+ */
+static void e1000_flush_tx_ring(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	struct e1000_tx_desc *tx_desc = NULL;
+	u32 tdt, tctl, txd_lower = E1000_TXD_CMD_IFCS;
+	u16 size = 512;
+
+	tctl = er32(TCTL);
+	ew32(TCTL, tctl | E1000_TCTL_EN);
+	tdt = er32(TDT(0));
+	BUG_ON(tdt != tx_ring->next_to_use);
+	tx_desc =  E1000_TX_DESC(*tx_ring, tx_ring->next_to_use);
+	tx_desc->buffer_addr = cpu_to_le64(tx_ring->dma);
+
+	tx_desc->lower.data = cpu_to_le32(txd_lower | size);
+	tx_desc->upper.data = 0;
+	/* flush descriptors to memory before notifying the HW */
+	wmb();
+	tx_ring->next_to_use++;
+	if (tx_ring->next_to_use == tx_ring->count)
+		tx_ring->next_to_use = 0;
+	ew32(TDT(0), tx_ring->next_to_use);
+	usleep_range(200, 250);
+}
+
+/**
+ * e1000_flush_rx_ring - remove all descriptors from the rx_ring
+ * @adapter: board private structure
+ *
+ * Mark all descriptors in the RX ring as consumed and disable the rx ring
+ */
+static void e1000_flush_rx_ring(struct e1000_adapter *adapter)
+{
+	u32 rctl, rxdctl;
+	struct e1000_hw *hw = &adapter->hw;
+
+	rctl = er32(RCTL);
+	ew32(RCTL, rctl & ~E1000_RCTL_EN);
+	e1e_flush();
+	usleep_range(100, 150);
+
+	rxdctl = er32(RXDCTL(0));
+	/* zero the lower 14 bits (prefetch and host thresholds) */
+	rxdctl &= 0xffffc000;
+
+	/* update thresholds: prefetch threshold to 31, host threshold to 1
+	 * and make sure the granularity is "descriptors" and not "cache lines"
+	 */
+	rxdctl |= (0x1F | BIT(8) | E1000_RXDCTL_THRESH_UNIT_DESC);
+
+	ew32(RXDCTL(0), rxdctl);
+	/* momentarily enable the RX ring for the changes to take effect */
+	ew32(RCTL, rctl | E1000_RCTL_EN);
+	e1e_flush();
+	usleep_range(100, 150);
+	ew32(RCTL, rctl & ~E1000_RCTL_EN);
+}
+
+/**
+ * e1000_flush_desc_rings - remove all descriptors from the descriptor rings
+ * @adapter: board private structure
+ *
+ * In i219, the descriptor rings must be emptied before resetting the HW
+ * or before changing the device state to D3 during runtime (runtime PM).
+ *
+ * Failure to do this will cause the HW to enter a unit hang state which can
+ * only be released by PCI reset on the device
+ *
+ */
+
+static void e1000_flush_desc_rings(struct e1000_adapter *adapter)
+{
+	u16 hang_state;
+	u32 fext_nvm11, tdlen;
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* First, disable MULR fix in FEXTNVM11 */
+	fext_nvm11 = er32(FEXTNVM11);
+	fext_nvm11 |= E1000_FEXTNVM11_DISABLE_MULR_FIX;
+	ew32(FEXTNVM11, fext_nvm11);
+	/* do nothing if we're not in faulty state, or if the queue is empty */
+	tdlen = er32(TDLEN(0));
+	pci_read_config_word(adapter->pdev, PCICFG_DESC_RING_STATUS,
+			     &hang_state);
+	if (!(hang_state & FLUSH_DESC_REQUIRED) || !tdlen)
+		return;
+	e1000_flush_tx_ring(adapter);
+	/* recheck, maybe the fault is caused by the rx ring */
+	pci_read_config_word(adapter->pdev, PCICFG_DESC_RING_STATUS,
+			     &hang_state);
+	if (hang_state & FLUSH_DESC_REQUIRED)
+		e1000_flush_rx_ring(adapter);
+}
+
+/**
+ * e1000e_systim_reset - reset the timesync registers after a hardware reset
+ * @adapter: board private structure
+ *
+ * When the MAC is reset, all hardware bits for timesync will be reset to the
+ * default values. This function will restore the settings last in place.
+ * Since the clock SYSTIME registers are reset, we will simply restore the
+ * cyclecounter to the kernel real clock time.
+ **/
+static void e1000e_systim_reset(struct e1000_adapter *adapter)
+{
+	struct ptp_clock_info *info = &adapter->ptp_clock_info;
+	struct e1000_hw *hw = &adapter->hw;
+	unsigned long flags;
+	u32 timinca;
+	s32 ret_val;
+
+	if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
+		return;
+
+	if (info->adjfine) {
+		/* restore the previous ptp frequency delta */
+		ret_val = info->adjfine(info, adapter->ptp_delta);
+	} else {
+		/* set the default base frequency if no adjustment possible */
+		ret_val = e1000e_get_base_timinca(adapter, &timinca);
+		if (!ret_val)
+			ew32(TIMINCA, timinca);
+	}
+
+	if (ret_val) {
+		dev_warn(&adapter->pdev->dev,
+			 "Failed to restore TIMINCA clock rate delta: %d\n",
+			 ret_val);
+		return;
+	}
+
+	/* reset the systim ns time counter */
+	spin_lock_irqsave(&adapter->systim_lock, flags);
+	timecounter_init(&adapter->tc, &adapter->cc,
+			 ktime_to_ns(ktime_get_real()));
+	spin_unlock_irqrestore(&adapter->systim_lock, flags);
+
+	/* restore the previous hwtstamp configuration settings */
+	e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config);
+}
+
+/**
+ * e1000e_reset - bring the hardware into a known good state
+ * @adapter: board private structure
+ *
+ * This function boots the hardware and enables some settings that
+ * require a configuration cycle of the hardware - those cannot be
+ * set/changed during runtime. After reset the device needs to be
+ * properly configured for Rx, Tx etc.
+ */
+void e1000e_reset(struct e1000_adapter *adapter)
+{
+	struct e1000_mac_info *mac = &adapter->hw.mac;
+	struct e1000_fc_info *fc = &adapter->hw.fc;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 tx_space, min_tx_space, min_rx_space;
+	u32 pba = adapter->pba;
+	u16 hwm;
+
+	/* reset Packet Buffer Allocation to default */
+	ew32(PBA, pba);
+
+	if (adapter->max_frame_size > (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)) {
+		/* To maintain wire speed transmits, the Tx FIFO should be
+		 * large enough to accommodate two full transmit packets,
+		 * rounded up to the next 1KB and expressed in KB.  Likewise,
+		 * the Rx FIFO should be large enough to accommodate at least
+		 * one full receive packet and is similarly rounded up and
+		 * expressed in KB.
+		 */
+		pba = er32(PBA);
+		/* upper 16 bits has Tx packet buffer allocation size in KB */
+		tx_space = pba >> 16;
+		/* lower 16 bits has Rx packet buffer allocation size in KB */
+		pba &= 0xffff;
+		/* the Tx fifo also stores 16 bytes of information about the Tx
+		 * but don't include ethernet FCS because hardware appends it
+		 */
+		min_tx_space = (adapter->max_frame_size +
+				sizeof(struct e1000_tx_desc) - ETH_FCS_LEN) * 2;
+		min_tx_space = ALIGN(min_tx_space, 1024);
+		min_tx_space >>= 10;
+		/* software strips receive CRC, so leave room for it */
+		min_rx_space = adapter->max_frame_size;
+		min_rx_space = ALIGN(min_rx_space, 1024);
+		min_rx_space >>= 10;
+
+		/* If current Tx allocation is less than the min Tx FIFO size,
+		 * and the min Tx FIFO size is less than the current Rx FIFO
+		 * allocation, take space away from current Rx allocation
+		 */
+		if ((tx_space < min_tx_space) &&
+		    ((min_tx_space - tx_space) < pba)) {
+			pba -= min_tx_space - tx_space;
+
+			/* if short on Rx space, Rx wins and must trump Tx
+			 * adjustment
+			 */
+			if (pba < min_rx_space)
+				pba = min_rx_space;
+		}
+
+		ew32(PBA, pba);
+	}
+
+	/* flow control settings
+	 *
+	 * The high water mark must be low enough to fit one full frame
+	 * (or the size used for early receive) above it in the Rx FIFO.
+	 * Set it to the lower of:
+	 * - 90% of the Rx FIFO size, and
+	 * - the full Rx FIFO size minus one full frame
+	 */
+	if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
+		fc->pause_time = 0xFFFF;
+	else
+		fc->pause_time = E1000_FC_PAUSE_TIME;
+	fc->send_xon = true;
+	fc->current_mode = fc->requested_mode;
+
+	switch (hw->mac.type) {
+	case e1000_ich9lan:
+	case e1000_ich10lan:
+		if (adapter->netdev->mtu > ETH_DATA_LEN) {
+			pba = 14;
+			ew32(PBA, pba);
+			fc->high_water = 0x2800;
+			fc->low_water = fc->high_water - 8;
+			break;
+		}
+		fallthrough;
+	default:
+		hwm = min(((pba << 10) * 9 / 10),
+			  ((pba << 10) - adapter->max_frame_size));
+
+		fc->high_water = hwm & E1000_FCRTH_RTH;	/* 8-byte granularity */
+		fc->low_water = fc->high_water - 8;
+		break;
+	case e1000_pchlan:
+		/* Workaround PCH LOM adapter hangs with certain network
+		 * loads.  If hangs persist, try disabling Tx flow control.
+		 */
+		if (adapter->netdev->mtu > ETH_DATA_LEN) {
+			fc->high_water = 0x3500;
+			fc->low_water = 0x1500;
+		} else {
+			fc->high_water = 0x5000;
+			fc->low_water = 0x3000;
+		}
+		fc->refresh_time = 0x1000;
+		break;
+	case e1000_pch2lan:
+	case e1000_pch_lpt:
+	case e1000_pch_spt:
+	case e1000_pch_cnp:
+	case e1000_pch_tgp:
+	case e1000_pch_adp:
+	case e1000_pch_mtp:
+	case e1000_pch_lnp:
+		fc->refresh_time = 0xFFFF;
+		fc->pause_time = 0xFFFF;
+
+		if (adapter->netdev->mtu <= ETH_DATA_LEN) {
+			fc->high_water = 0x05C20;
+			fc->low_water = 0x05048;
+			break;
+		}
+
+		pba = 14;
+		ew32(PBA, pba);
+		fc->high_water = ((pba << 10) * 9 / 10) & E1000_FCRTH_RTH;
+		fc->low_water = ((pba << 10) * 8 / 10) & E1000_FCRTL_RTL;
+		break;
+	}
+
+	/* Alignment of Tx data is on an arbitrary byte boundary with the
+	 * maximum size per Tx descriptor limited only to the transmit
+	 * allocation of the packet buffer minus 96 bytes with an upper
+	 * limit of 24KB due to receive synchronization limitations.
+	 */
+	adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96,
+				       24 << 10);
+
+	/* Disable Adaptive Interrupt Moderation if 2 full packets cannot
+	 * fit in receive buffer.
+	 */
+	if (adapter->itr_setting & 0x3) {
+		if ((adapter->max_frame_size * 2) > (pba << 10)) {
+			if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
+				dev_info(&adapter->pdev->dev,
+					 "Interrupt Throttle Rate off\n");
+				adapter->flags2 |= FLAG2_DISABLE_AIM;
+				e1000e_write_itr(adapter, 0);
+			}
+		} else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
+			dev_info(&adapter->pdev->dev,
+				 "Interrupt Throttle Rate on\n");
+			adapter->flags2 &= ~FLAG2_DISABLE_AIM;
+			adapter->itr = 20000;
+			e1000e_write_itr(adapter, adapter->itr);
+		}
+	}
+
+	if (hw->mac.type >= e1000_pch_spt)
+		e1000_flush_desc_rings(adapter);
+	/* Allow time for pending master requests to run */
+	mac->ops.reset_hw(hw);
+
+	/* For parts with AMT enabled, let the firmware know
+	 * that the network interface is in control
+	 */
+	if (adapter->flags & FLAG_HAS_AMT)
+		e1000e_get_hw_control(adapter);
+
+	ew32(WUC, 0);
+
+	if (mac->ops.init_hw(hw))
+		e_err("Hardware Error\n");
+
+	e1000_update_mng_vlan(adapter);
+
+	/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
+	ew32(VET, ETH_P_8021Q);
+
+	e1000e_reset_adaptive(hw);
+
+	/* restore systim and hwtstamp settings */
+	e1000e_systim_reset(adapter);
+
+	/* Set EEE advertisement as appropriate */
+	if (adapter->flags2 & FLAG2_HAS_EEE) {
+		s32 ret_val;
+		u16 adv_addr;
+
+		switch (hw->phy.type) {
+		case e1000_phy_82579:
+			adv_addr = I82579_EEE_ADVERTISEMENT;
+			break;
+		case e1000_phy_i217:
+			adv_addr = I217_EEE_ADVERTISEMENT;
+			break;
+		default:
+			dev_err(&adapter->pdev->dev,
+				"Invalid PHY type setting EEE advertisement\n");
+			return;
+		}
+
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val) {
+			dev_err(&adapter->pdev->dev,
+				"EEE advertisement - unable to acquire PHY\n");
+			return;
+		}
+
+		e1000_write_emi_reg_locked(hw, adv_addr,
+					   hw->dev_spec.ich8lan.eee_disable ?
+					   0 : adapter->eee_advert);
+
+		hw->phy.ops.release(hw);
+	}
+
+	if (!netif_running(adapter->netdev) &&
+	    !test_bit(__E1000_TESTING, &adapter->state))
+		e1000_power_down_phy(adapter);
+
+	e1000_get_phy_info(hw);
+
+	if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
+	    !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
+		u16 phy_data = 0;
+		/* speed up time to link by disabling smart power down, ignore
+		 * the return value of this function because there is nothing
+		 * different we would do if it failed
+		 */
+		e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
+		phy_data &= ~IGP02E1000_PM_SPD;
+		e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
+	}
+	if (hw->mac.type >= e1000_pch_spt && adapter->int_mode == 0) {
+		u32 reg;
+
+		/* Fextnvm7 @ 0xe4[2] = 1 */
+		reg = er32(FEXTNVM7);
+		reg |= E1000_FEXTNVM7_SIDE_CLK_UNGATE;
+		ew32(FEXTNVM7, reg);
+		/* Fextnvm9 @ 0x5bb4[13:12] = 11 */
+		reg = er32(FEXTNVM9);
+		reg |= E1000_FEXTNVM9_IOSFSB_CLKGATE_DIS |
+		       E1000_FEXTNVM9_IOSFSB_CLKREQ_DIS;
+		ew32(FEXTNVM9, reg);
+	}
+
+}
+
+/**
+ * e1000e_trigger_lsc - trigger an LSC interrupt
+ * @adapter: 
+ *
+ * Fire a link status change interrupt to start the watchdog.
+ **/
+static void e1000e_trigger_lsc(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (adapter->msix_entries)
+		ew32(ICS, E1000_ICS_LSC | E1000_ICS_OTHER);
+	else
+		ew32(ICS, E1000_ICS_LSC);
+}
+
+void e1000e_up(struct e1000_adapter *adapter)
+{
+	/* hardware has been reset, we need to reload some things */
+	e1000_configure(adapter);
+
+	clear_bit(__E1000_DOWN, &adapter->state);
+
+	if (adapter->msix_entries)
+		e1000_configure_msix(adapter);
+	e1000_irq_enable(adapter);
+
+	/* Tx queue started by watchdog timer when link is up */
+
+	e1000e_trigger_lsc(adapter);
+}
+
+static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (!(adapter->flags2 & FLAG2_DMA_BURST))
+		return;
+
+	/* flush pending descriptor writebacks to memory */
+	ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+	ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
+
+	/* execute the writes immediately */
+	e1e_flush();
+
+	/* due to rare timing issues, write to TIDV/RDTR again to ensure the
+	 * write is successful
+	 */
+	ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+	ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
+
+	/* execute the writes immediately */
+	e1e_flush();
+}
+
+static void e1000e_update_stats(struct e1000_adapter *adapter);
+
+/**
+ * e1000e_down - quiesce the device and optionally reset the hardware
+ * @adapter: board private structure
+ * @reset: boolean flag to reset the hardware or not
+ */
+void e1000e_down(struct e1000_adapter *adapter, bool reset)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 tctl, rctl;
+
+	/* signal that we're down so the interrupt handler does not
+	 * reschedule our watchdog timer
+	 */
+	set_bit(__E1000_DOWN, &adapter->state);
+
+	netif_carrier_off(netdev);
+
+	/* disable receives in the hardware */
+	rctl = er32(RCTL);
+	if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
+		ew32(RCTL, rctl & ~E1000_RCTL_EN);
+	/* flush and sleep below */
+
+	netif_stop_queue(netdev);
+
+	/* disable transmits in the hardware */
+	tctl = er32(TCTL);
+	tctl &= ~E1000_TCTL_EN;
+	ew32(TCTL, tctl);
+
+	/* flush both disables and wait for them to finish */
+	e1e_flush();
+	usleep_range(10000, 11000);
+
+	e1000_irq_disable(adapter);
+
+	napi_synchronize(&adapter->napi);
+
+	del_timer_sync(&adapter->watchdog_timer);
+	del_timer_sync(&adapter->phy_info_timer);
+
+	spin_lock(&adapter->stats64_lock);
+	e1000e_update_stats(adapter);
+	spin_unlock(&adapter->stats64_lock);
+
+	e1000e_flush_descriptors(adapter);
+
+	adapter->link_speed = 0;
+	adapter->link_duplex = 0;
+
+	/* Disable Si errata workaround on PCHx for jumbo frame flow */
+	if ((hw->mac.type >= e1000_pch2lan) &&
+	    (adapter->netdev->mtu > ETH_DATA_LEN) &&
+	    e1000_lv_jumbo_workaround_ich8lan(hw, false))
+		e_dbg("failed to disable jumbo frame workaround mode\n");
+
+	if (!pci_channel_offline(adapter->pdev)) {
+		if (reset)
+			e1000e_reset(adapter);
+		else if (hw->mac.type >= e1000_pch_spt)
+			e1000_flush_desc_rings(adapter);
+	}
+	e1000_clean_tx_ring(adapter->tx_ring);
+	e1000_clean_rx_ring(adapter->rx_ring);
+}
+
+void e1000e_reinit_locked(struct e1000_adapter *adapter)
+{
+	might_sleep();
+	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
+		usleep_range(1000, 1100);
+	e1000e_down(adapter, true);
+	e1000e_up(adapter);
+	clear_bit(__E1000_RESETTING, &adapter->state);
+}
+
+/**
+ * e1000e_sanitize_systim - sanitize raw cycle counter reads
+ * @hw: pointer to the HW structure
+ * @systim: PHC time value read, sanitized and returned
+ * @sts: structure to hold system time before and after reading SYSTIML,
+ * may be NULL
+ *
+ * Errata for 82574/82583 possible bad bits read from SYSTIMH/L:
+ * check to see that the time is incrementing at a reasonable
+ * rate and is a multiple of incvalue.
+ **/
+static u64 e1000e_sanitize_systim(struct e1000_hw *hw, u64 systim,
+				  struct ptp_system_timestamp *sts)
+{
+	u64 time_delta, rem, temp;
+	u64 systim_next;
+	u32 incvalue;
+	int i;
+
+	incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK;
+	for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) {
+		/* latch SYSTIMH on read of SYSTIML */
+		ptp_read_system_prets(sts);
+		systim_next = (u64)er32(SYSTIML);
+		ptp_read_system_postts(sts);
+		systim_next |= (u64)er32(SYSTIMH) << 32;
+
+		time_delta = systim_next - systim;
+		temp = time_delta;
+		/* VMWare users have seen incvalue of zero, don't div / 0 */
+		rem = incvalue ? do_div(temp, incvalue) : (time_delta != 0);
+
+		systim = systim_next;
+
+		if ((time_delta < E1000_82574_SYSTIM_EPSILON) && (rem == 0))
+			break;
+	}
+
+	return systim;
+}
+
+/**
+ * e1000e_read_systim - read SYSTIM register
+ * @adapter: board private structure
+ * @sts: structure which will contain system time before and after reading
+ * SYSTIML, may be NULL
+ **/
+u64 e1000e_read_systim(struct e1000_adapter *adapter,
+		       struct ptp_system_timestamp *sts)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 systimel, systimel_2, systimeh;
+	u64 systim;
+	/* SYSTIMH latching upon SYSTIML read does not work well.
+	 * This means that if SYSTIML overflows after we read it but before
+	 * we read SYSTIMH, the value of SYSTIMH has been incremented and we
+	 * will experience a huge non linear increment in the systime value
+	 * to fix that we test for overflow and if true, we re-read systime.
+	 */
+	ptp_read_system_prets(sts);
+	systimel = er32(SYSTIML);
+	ptp_read_system_postts(sts);
+	systimeh = er32(SYSTIMH);
+	/* Is systimel is so large that overflow is possible? */
+	if (systimel >= (u32)0xffffffff - E1000_TIMINCA_INCVALUE_MASK) {
+		ptp_read_system_prets(sts);
+		systimel_2 = er32(SYSTIML);
+		ptp_read_system_postts(sts);
+		if (systimel > systimel_2) {
+			/* There was an overflow, read again SYSTIMH, and use
+			 * systimel_2
+			 */
+			systimeh = er32(SYSTIMH);
+			systimel = systimel_2;
+		}
+	}
+	systim = (u64)systimel;
+	systim |= (u64)systimeh << 32;
+
+	if (adapter->flags2 & FLAG2_CHECK_SYSTIM_OVERFLOW)
+		systim = e1000e_sanitize_systim(hw, systim, sts);
+
+	return systim;
+}
+
+/**
+ * e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
+ * @cc: cyclecounter structure
+ **/
+static u64 e1000e_cyclecounter_read(const struct cyclecounter *cc)
+{
+	struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter,
+						     cc);
+
+	return e1000e_read_systim(adapter, NULL);
+}
+
+/**
+ * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * e1000_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int e1000_sw_init(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	adapter->rx_buffer_len = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
+	adapter->rx_ps_bsize0 = 128;
+	adapter->max_frame_size = netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+	adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+	adapter->tx_ring_count = E1000_DEFAULT_TXD;
+	adapter->rx_ring_count = E1000_DEFAULT_RXD;
+
+	spin_lock_init(&adapter->stats64_lock);
+
+	e1000e_set_interrupt_capability(adapter);
+
+	if (e1000_alloc_queues(adapter))
+		return -ENOMEM;
+
+	/* Setup hardware time stamping cyclecounter */
+	if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) {
+		adapter->cc.read = e1000e_cyclecounter_read;
+		adapter->cc.mask = CYCLECOUNTER_MASK(64);
+		adapter->cc.mult = 1;
+		/* cc.shift set in e1000e_get_base_tininca() */
+
+		spin_lock_init(&adapter->systim_lock);
+		INIT_WORK(&adapter->tx_hwtstamp_work, e1000e_tx_hwtstamp_work);
+	}
+
+	/* Explicitly disable IRQ since the NIC can be in any state. */
+	e1000_irq_disable(adapter);
+
+	set_bit(__E1000_DOWN, &adapter->state);
+	return 0;
+}
+
+/**
+ * e1000_intr_msi_test - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t e1000_intr_msi_test(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 icr = er32(ICR);
+
+	e_dbg("icr is %08X\n", icr);
+	if (icr & E1000_ICR_RXSEQ) {
+		adapter->flags &= ~FLAG_MSI_TEST_FAILED;
+		/* Force memory writes to complete before acknowledging the
+		 * interrupt is handled.
+		 */
+		wmb();
+	}
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * e1000_test_msi_interrupt - Returns 0 for successful test
+ * @adapter: board private struct
+ *
+ * code flow taken from tg3.c
+ **/
+static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	int err;
+
+	/* poll_enable hasn't been called yet, so don't need disable */
+	/* clear any pending events */
+	er32(ICR);
+
+	/* free the real vector and request a test handler */
+	e1000_free_irq(adapter);
+	e1000e_reset_interrupt_capability(adapter);
+
+	/* Assume that the test fails, if it succeeds then the test
+	 * MSI irq handler will unset this flag
+	 */
+	adapter->flags |= FLAG_MSI_TEST_FAILED;
+
+	err = pci_enable_msi(adapter->pdev);
+	if (err)
+		goto msi_test_failed;
+
+	err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
+			  netdev->name, netdev);
+	if (err) {
+		pci_disable_msi(adapter->pdev);
+		goto msi_test_failed;
+	}
+
+	/* Force memory writes to complete before enabling and firing an
+	 * interrupt.
+	 */
+	wmb();
+
+	e1000_irq_enable(adapter);
+
+	/* fire an unusual interrupt on the test handler */
+	ew32(ICS, E1000_ICS_RXSEQ);
+	e1e_flush();
+	msleep(100);
+
+	e1000_irq_disable(adapter);
+
+	rmb();			/* read flags after interrupt has been fired */
+
+	if (adapter->flags & FLAG_MSI_TEST_FAILED) {
+		adapter->int_mode = E1000E_INT_MODE_LEGACY;
+		e_info("MSI interrupt test failed, using legacy interrupt.\n");
+	} else {
+		e_dbg("MSI interrupt test succeeded!\n");
+	}
+
+	free_irq(adapter->pdev->irq, netdev);
+	pci_disable_msi(adapter->pdev);
+
+msi_test_failed:
+	e1000e_set_interrupt_capability(adapter);
+	return e1000_request_irq(adapter);
+}
+
+/**
+ * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
+ * @adapter: board private struct
+ *
+ * code flow taken from tg3.c, called with e1000 interrupts disabled.
+ **/
+static int e1000_test_msi(struct e1000_adapter *adapter)
+{
+	int err;
+	u16 pci_cmd;
+
+	if (!(adapter->flags & FLAG_MSI_ENABLED))
+		return 0;
+
+	/* disable SERR in case the MSI write causes a master abort */
+	pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
+	if (pci_cmd & PCI_COMMAND_SERR)
+		pci_write_config_word(adapter->pdev, PCI_COMMAND,
+				      pci_cmd & ~PCI_COMMAND_SERR);
+
+	err = e1000_test_msi_interrupt(adapter);
+
+	/* re-enable SERR */
+	if (pci_cmd & PCI_COMMAND_SERR) {
+		pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
+		pci_cmd |= PCI_COMMAND_SERR;
+		pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
+	}
+
+	return err;
+}
+
+/**
+ * e1000e_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).  At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ **/
+int e1000e_open(struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct pci_dev *pdev = adapter->pdev;
+	int err;
+
+	/* disallow open during test */
+	if (test_bit(__E1000_TESTING, &adapter->state))
+		return -EBUSY;
+
+	pm_runtime_get_sync(&pdev->dev);
+
+	netif_carrier_off(netdev);
+	netif_stop_queue(netdev);
+
+	/* allocate transmit descriptors */
+	err = e1000e_setup_tx_resources(adapter->tx_ring);
+	if (err)
+		goto err_setup_tx;
+
+	/* allocate receive descriptors */
+	err = e1000e_setup_rx_resources(adapter->rx_ring);
+	if (err)
+		goto err_setup_rx;
+
+	/* If AMT is enabled, let the firmware know that the network
+	 * interface is now open and reset the part to a known state.
+	 */
+	if (adapter->flags & FLAG_HAS_AMT) {
+		e1000e_get_hw_control(adapter);
+		e1000e_reset(adapter);
+	}
+
+	e1000e_power_up_phy(adapter);
+
+	adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
+	if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
+		e1000_update_mng_vlan(adapter);
+
+	/* DMA latency requirement to workaround jumbo issue */
+	cpu_latency_qos_add_request(&adapter->pm_qos_req, PM_QOS_DEFAULT_VALUE);
+
+	/* before we allocate an interrupt, we must be ready to handle it.
+	 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
+	 * as soon as we call pci_request_irq, so we have to setup our
+	 * clean_rx handler before we do so.
+	 */
+	e1000_configure(adapter);
+
+	err = e1000_request_irq(adapter);
+	if (err)
+		goto err_req_irq;
+
+	/* Work around PCIe errata with MSI interrupts causing some chipsets to
+	 * ignore e1000e MSI messages, which means we need to test our MSI
+	 * interrupt now
+	 */
+	if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
+		err = e1000_test_msi(adapter);
+		if (err) {
+			e_err("Interrupt allocation failed\n");
+			goto err_req_irq;
+		}
+	}
+
+	/* From here on the code is the same as e1000e_up() */
+	clear_bit(__E1000_DOWN, &adapter->state);
+
+	napi_enable(&adapter->napi);
+
+	e1000_irq_enable(adapter);
+
+	adapter->tx_hang_recheck = false;
+
+	hw->mac.get_link_status = true;
+	pm_runtime_put(&pdev->dev);
+
+	e1000e_trigger_lsc(adapter);
+
+	return 0;
+
+err_req_irq:
+	cpu_latency_qos_remove_request(&adapter->pm_qos_req);
+	e1000e_release_hw_control(adapter);
+	e1000_power_down_phy(adapter);
+	e1000e_free_rx_resources(adapter->rx_ring);
+err_setup_rx:
+	e1000e_free_tx_resources(adapter->tx_ring);
+err_setup_tx:
+	e1000e_reset(adapter);
+	pm_runtime_put_sync(&pdev->dev);
+
+	return err;
+}
+
+/**
+ * e1000e_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.
+ **/
+int e1000e_close(struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = adapter->pdev;
+	int count = E1000_CHECK_RESET_COUNT;
+
+	while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
+		usleep_range(10000, 11000);
+
+	WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
+
+	pm_runtime_get_sync(&pdev->dev);
+
+	if (netif_device_present(netdev)) {
+		e1000e_down(adapter, true);
+		e1000_free_irq(adapter);
+
+		/* Link status message must follow this format */
+		netdev_info(netdev, "NIC Link is Down\n");
+	}
+
+	napi_disable(&adapter->napi);
+
+	e1000e_free_tx_resources(adapter->tx_ring);
+	e1000e_free_rx_resources(adapter->rx_ring);
+
+	/* kill manageability vlan ID if supported, but not if a vlan with
+	 * the same ID is registered on the host OS (let 8021q kill it)
+	 */
+	if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
+		e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q),
+				       adapter->mng_vlan_id);
+
+	/* If AMT is enabled, let the firmware know that the network
+	 * interface is now closed
+	 */
+	if ((adapter->flags & FLAG_HAS_AMT) &&
+	    !test_bit(__E1000_TESTING, &adapter->state))
+		e1000e_release_hw_control(adapter);
+
+	cpu_latency_qos_remove_request(&adapter->pm_qos_req);
+
+	pm_runtime_put_sync(&pdev->dev);
+
+	return 0;
+}
+
+/**
+ * e1000_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 e1000_set_mac(struct net_device *netdev, void *p)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	struct sockaddr *addr = p;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	eth_hw_addr_set(netdev, addr->sa_data);
+	memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
+
+	hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
+
+	if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
+		/* activate the work around */
+		e1000e_set_laa_state_82571(&adapter->hw, 1);
+
+		/* Hold a copy of the LAA in RAR[14] This is done so that
+		 * between the time RAR[0] gets clobbered  and the time it
+		 * gets fixed (in e1000_watchdog), the actual LAA is in one
+		 * of the RARs and no incoming packets directed to this port
+		 * are dropped. Eventually the LAA will be in RAR[0] and
+		 * RAR[14]
+		 */
+		hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr,
+				    adapter->hw.mac.rar_entry_count - 1);
+	}
+
+	return 0;
+}
+
+/**
+ * e1000e_update_phy_task - work thread to update phy
+ * @work: pointer to our work struct
+ *
+ * this worker thread exists because we must acquire a
+ * semaphore to read the phy, which we could msleep while
+ * waiting for it, and we can't msleep in a timer.
+ **/
+static void e1000e_update_phy_task(struct work_struct *work)
+{
+	struct e1000_adapter *adapter = container_of(work,
+						     struct e1000_adapter,
+						     update_phy_task);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (test_bit(__E1000_DOWN, &adapter->state))
+		return;
+
+	e1000_get_phy_info(hw);
+
+	/* Enable EEE on 82579 after link up */
+	if (hw->phy.type >= e1000_phy_82579)
+		e1000_set_eee_pchlan(hw);
+}
+
+/**
+ * e1000_update_phy_info - timre call-back to update PHY info
+ * @t: pointer to timer_list containing private info adapter
+ *
+ * Need to wait a few seconds after link up to get diagnostic information from
+ * the phy
+ **/
+static void e1000_update_phy_info(struct timer_list *t)
+{
+	struct e1000_adapter *adapter = from_timer(adapter, t, phy_info_timer);
+
+	if (test_bit(__E1000_DOWN, &adapter->state))
+		return;
+
+	schedule_work(&adapter->update_phy_task);
+}
+
+/**
+ * e1000e_update_phy_stats - Update the PHY statistics counters
+ * @adapter: board private structure
+ *
+ * Read/clear the upper 16-bit PHY registers and read/accumulate lower
+ **/
+static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	s32 ret_val;
+	u16 phy_data;
+
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return;
+
+	/* A page set is expensive so check if already on desired page.
+	 * If not, set to the page with the PHY status registers.
+	 */
+	hw->phy.addr = 1;
+	ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
+					   &phy_data);
+	if (ret_val)
+		goto release;
+	if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
+		ret_val = hw->phy.ops.set_page(hw,
+					       HV_STATS_PAGE << IGP_PAGE_SHIFT);
+		if (ret_val)
+			goto release;
+	}
+
+	/* Single Collision Count */
+	hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
+	if (!ret_val)
+		adapter->stats.scc += phy_data;
+
+	/* Excessive Collision Count */
+	hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
+	if (!ret_val)
+		adapter->stats.ecol += phy_data;
+
+	/* Multiple Collision Count */
+	hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
+	if (!ret_val)
+		adapter->stats.mcc += phy_data;
+
+	/* Late Collision Count */
+	hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
+	if (!ret_val)
+		adapter->stats.latecol += phy_data;
+
+	/* Collision Count - also used for adaptive IFS */
+	hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
+	if (!ret_val)
+		hw->mac.collision_delta = phy_data;
+
+	/* Defer Count */
+	hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
+	if (!ret_val)
+		adapter->stats.dc += phy_data;
+
+	/* Transmit with no CRS */
+	hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
+	ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
+	if (!ret_val)
+		adapter->stats.tncrs += phy_data;
+
+release:
+	hw->phy.ops.release(hw);
+}
+
+/**
+ * e1000e_update_stats - Update the board statistics counters
+ * @adapter: board private structure
+ **/
+static void e1000e_update_stats(struct e1000_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_hw *hw = &adapter->hw;
+	struct pci_dev *pdev = adapter->pdev;
+
+	/* Prevent stats update while adapter is being reset, or if the pci
+	 * connection is down.
+	 */
+	if (adapter->link_speed == 0)
+		return;
+	if (pci_channel_offline(pdev))
+		return;
+
+	adapter->stats.crcerrs += er32(CRCERRS);
+	adapter->stats.gprc += er32(GPRC);
+	adapter->stats.gorc += er32(GORCL);
+	er32(GORCH);		/* Clear gorc */
+	adapter->stats.bprc += er32(BPRC);
+	adapter->stats.mprc += er32(MPRC);
+	adapter->stats.roc += er32(ROC);
+
+	adapter->stats.mpc += er32(MPC);
+
+	/* Half-duplex statistics */
+	if (adapter->link_duplex == HALF_DUPLEX) {
+		if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
+			e1000e_update_phy_stats(adapter);
+		} else {
+			adapter->stats.scc += er32(SCC);
+			adapter->stats.ecol += er32(ECOL);
+			adapter->stats.mcc += er32(MCC);
+			adapter->stats.latecol += er32(LATECOL);
+			adapter->stats.dc += er32(DC);
+
+			hw->mac.collision_delta = er32(COLC);
+
+			if ((hw->mac.type != e1000_82574) &&
+			    (hw->mac.type != e1000_82583))
+				adapter->stats.tncrs += er32(TNCRS);
+		}
+		adapter->stats.colc += hw->mac.collision_delta;
+	}
+
+	adapter->stats.xonrxc += er32(XONRXC);
+	adapter->stats.xontxc += er32(XONTXC);
+	adapter->stats.xoffrxc += er32(XOFFRXC);
+	adapter->stats.xofftxc += er32(XOFFTXC);
+	adapter->stats.gptc += er32(GPTC);
+	adapter->stats.gotc += er32(GOTCL);
+	er32(GOTCH);		/* Clear gotc */
+	adapter->stats.rnbc += er32(RNBC);
+	adapter->stats.ruc += er32(RUC);
+
+	adapter->stats.mptc += er32(MPTC);
+	adapter->stats.bptc += er32(BPTC);
+
+	/* used for adaptive IFS */
+
+	hw->mac.tx_packet_delta = er32(TPT);
+	adapter->stats.tpt += hw->mac.tx_packet_delta;
+
+	adapter->stats.algnerrc += er32(ALGNERRC);
+	adapter->stats.rxerrc += er32(RXERRC);
+	adapter->stats.cexterr += er32(CEXTERR);
+	adapter->stats.tsctc += er32(TSCTC);
+	adapter->stats.tsctfc += er32(TSCTFC);
+
+	/* Fill out the OS statistics structure */
+	netdev->stats.multicast = adapter->stats.mprc;
+	netdev->stats.collisions = adapter->stats.colc;
+
+	/* Rx Errors */
+
+	/* RLEC on some newer hardware can be incorrect so build
+	 * our own version based on RUC and ROC
+	 */
+	netdev->stats.rx_errors = adapter->stats.rxerrc +
+	    adapter->stats.crcerrs + adapter->stats.algnerrc +
+	    adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr;
+	netdev->stats.rx_length_errors = adapter->stats.ruc +
+	    adapter->stats.roc;
+	netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
+	netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
+	netdev->stats.rx_missed_errors = adapter->stats.mpc;
+
+	/* Tx Errors */
+	netdev->stats.tx_errors = adapter->stats.ecol + adapter->stats.latecol;
+	netdev->stats.tx_aborted_errors = adapter->stats.ecol;
+	netdev->stats.tx_window_errors = adapter->stats.latecol;
+	netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
+
+	/* Tx Dropped needs to be maintained elsewhere */
+
+	/* Management Stats */
+	adapter->stats.mgptc += er32(MGTPTC);
+	adapter->stats.mgprc += er32(MGTPRC);
+	adapter->stats.mgpdc += er32(MGTPDC);
+
+	/* Correctable ECC Errors */
+	if (hw->mac.type >= e1000_pch_lpt) {
+		u32 pbeccsts = er32(PBECCSTS);
+
+		adapter->corr_errors +=
+		    pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK;
+		adapter->uncorr_errors +=
+		    (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >>
+		    E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT;
+	}
+}
+
+/**
+ * e1000_phy_read_status - Update the PHY register status snapshot
+ * @adapter: board private structure
+ **/
+static void e1000_phy_read_status(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct e1000_phy_regs *phy = &adapter->phy_regs;
+
+	if (!pm_runtime_suspended((&adapter->pdev->dev)->parent) &&
+	    (er32(STATUS) & E1000_STATUS_LU) &&
+	    (adapter->hw.phy.media_type == e1000_media_type_copper)) {
+		int ret_val;
+
+		ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr);
+		ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr);
+		ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise);
+		ret_val |= e1e_rphy(hw, MII_LPA, &phy->lpa);
+		ret_val |= e1e_rphy(hw, MII_EXPANSION, &phy->expansion);
+		ret_val |= e1e_rphy(hw, MII_CTRL1000, &phy->ctrl1000);
+		ret_val |= e1e_rphy(hw, MII_STAT1000, &phy->stat1000);
+		ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus);
+		if (ret_val)
+			e_warn("Error reading PHY register\n");
+	} else {
+		/* Do not read PHY registers if link is not up
+		 * Set values to typical power-on defaults
+		 */
+		phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
+		phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
+			     BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
+			     BMSR_ERCAP);
+		phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
+				  ADVERTISE_ALL | ADVERTISE_CSMA);
+		phy->lpa = 0;
+		phy->expansion = EXPANSION_ENABLENPAGE;
+		phy->ctrl1000 = ADVERTISE_1000FULL;
+		phy->stat1000 = 0;
+		phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
+	}
+}
+
+static void e1000_print_link_info(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl = er32(CTRL);
+
+	/* Link status message must follow this format for user tools */
+	netdev_info(adapter->netdev,
+		    "NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
+		    adapter->link_speed,
+		    adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
+		    (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
+		    (ctrl & E1000_CTRL_RFCE) ? "Rx" :
+		    (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
+}
+
+static bool e1000e_has_link(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	bool link_active = false;
+	s32 ret_val = 0;
+
+	/* get_link_status is set on LSC (link status) interrupt or
+	 * Rx sequence error interrupt.  get_link_status will stay
+	 * true until the check_for_link establishes link
+	 * for copper adapters ONLY
+	 */
+	switch (hw->phy.media_type) {
+	case e1000_media_type_copper:
+		if (hw->mac.get_link_status) {
+			ret_val = hw->mac.ops.check_for_link(hw);
+			link_active = !hw->mac.get_link_status;
+		} else {
+			link_active = true;
+		}
+		break;
+	case e1000_media_type_fiber:
+		ret_val = hw->mac.ops.check_for_link(hw);
+		link_active = !!(er32(STATUS) & E1000_STATUS_LU);
+		break;
+	case e1000_media_type_internal_serdes:
+		ret_val = hw->mac.ops.check_for_link(hw);
+		link_active = hw->mac.serdes_has_link;
+		break;
+	default:
+	case e1000_media_type_unknown:
+		break;
+	}
+
+	if ((ret_val == -E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
+	    (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
+		/* See e1000_kmrn_lock_loss_workaround_ich8lan() */
+		e_info("Gigabit has been disabled, downgrading speed\n");
+	}
+
+	return link_active;
+}
+
+static void e1000e_enable_receives(struct e1000_adapter *adapter)
+{
+	/* make sure the receive unit is started */
+	if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
+	    (adapter->flags & FLAG_RESTART_NOW)) {
+		struct e1000_hw *hw = &adapter->hw;
+		u32 rctl = er32(RCTL);
+
+		ew32(RCTL, rctl | E1000_RCTL_EN);
+		adapter->flags &= ~FLAG_RESTART_NOW;
+	}
+}
+
+static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* With 82574 controllers, PHY needs to be checked periodically
+	 * for hung state and reset, if two calls return true
+	 */
+	if (e1000_check_phy_82574(hw))
+		adapter->phy_hang_count++;
+	else
+		adapter->phy_hang_count = 0;
+
+	if (adapter->phy_hang_count > 1) {
+		adapter->phy_hang_count = 0;
+		e_dbg("PHY appears hung - resetting\n");
+		schedule_work(&adapter->reset_task);
+	}
+}
+
+/**
+ * e1000_watchdog - Timer Call-back
+ * @t: pointer to timer_list containing private info adapter
+ **/
+static void e1000_watchdog(struct timer_list *t)
+{
+	struct e1000_adapter *adapter = from_timer(adapter, t, watchdog_timer);
+
+	/* Do the rest outside of interrupt context */
+	schedule_work(&adapter->watchdog_task);
+
+	/* TODO: make this use queue_delayed_work() */
+}
+
+static void e1000_watchdog_task(struct work_struct *work)
+{
+	struct e1000_adapter *adapter = container_of(work,
+						     struct e1000_adapter,
+						     watchdog_task);
+	struct net_device *netdev = adapter->netdev;
+	struct e1000_mac_info *mac = &adapter->hw.mac;
+	struct e1000_phy_info *phy = &adapter->hw.phy;
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	u32 dmoff_exit_timeout = 100, tries = 0;
+	struct e1000_hw *hw = &adapter->hw;
+	u32 link, tctl, pcim_state;
+
+	if (test_bit(__E1000_DOWN, &adapter->state))
+		return;
+
+	link = e1000e_has_link(adapter);
+	if ((netif_carrier_ok(netdev)) && link) {
+		/* Cancel scheduled suspend requests. */
+		pm_runtime_resume(netdev->dev.parent);
+
+		e1000e_enable_receives(adapter);
+		goto link_up;
+	}
+
+	if ((e1000e_enable_tx_pkt_filtering(hw)) &&
+	    (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
+		e1000_update_mng_vlan(adapter);
+
+	if (link) {
+		if (!netif_carrier_ok(netdev)) {
+			bool txb2b = true;
+
+			/* Cancel scheduled suspend requests. */
+			pm_runtime_resume(netdev->dev.parent);
+
+			/* Checking if MAC is in DMoff state*/
+			if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID) {
+				pcim_state = er32(STATUS);
+				while (pcim_state & E1000_STATUS_PCIM_STATE) {
+					if (tries++ == dmoff_exit_timeout) {
+						e_dbg("Error in exiting dmoff\n");
+						break;
+					}
+					usleep_range(10000, 20000);
+					pcim_state = er32(STATUS);
+
+					/* Checking if MAC exited DMoff state */
+					if (!(pcim_state & E1000_STATUS_PCIM_STATE))
+						e1000_phy_hw_reset(&adapter->hw);
+				}
+			}
+
+			/* update snapshot of PHY registers on LSC */
+			e1000_phy_read_status(adapter);
+			mac->ops.get_link_up_info(&adapter->hw,
+						  &adapter->link_speed,
+						  &adapter->link_duplex);
+			e1000_print_link_info(adapter);
+
+			/* check if SmartSpeed worked */
+			e1000e_check_downshift(hw);
+			if (phy->speed_downgraded)
+				netdev_warn(netdev,
+					    "Link Speed was downgraded by SmartSpeed\n");
+
+			/* On supported PHYs, check for duplex mismatch only
+			 * if link has autonegotiated at 10/100 half
+			 */
+			if ((hw->phy.type == e1000_phy_igp_3 ||
+			     hw->phy.type == e1000_phy_bm) &&
+			    hw->mac.autoneg &&
+			    (adapter->link_speed == SPEED_10 ||
+			     adapter->link_speed == SPEED_100) &&
+			    (adapter->link_duplex == HALF_DUPLEX)) {
+				u16 autoneg_exp;
+
+				e1e_rphy(hw, MII_EXPANSION, &autoneg_exp);
+
+				if (!(autoneg_exp & EXPANSION_NWAY))
+					e_info("Autonegotiated half duplex but link partner cannot autoneg.  Try forcing full duplex if link gets many collisions.\n");
+			}
+
+			/* adjust timeout factor according to speed/duplex */
+			adapter->tx_timeout_factor = 1;
+			switch (adapter->link_speed) {
+			case SPEED_10:
+				txb2b = false;
+				adapter->tx_timeout_factor = 16;
+				break;
+			case SPEED_100:
+				txb2b = false;
+				adapter->tx_timeout_factor = 10;
+				break;
+			}
+
+			/* workaround: re-program speed mode bit after
+			 * link-up event
+			 */
+			if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
+			    !txb2b) {
+				u32 tarc0;
+
+				tarc0 = er32(TARC(0));
+				tarc0 &= ~SPEED_MODE_BIT;
+				ew32(TARC(0), tarc0);
+			}
+
+			/* enable transmits in the hardware, need to do this
+			 * after setting TARC(0)
+			 */
+			tctl = er32(TCTL);
+			tctl |= E1000_TCTL_EN;
+			ew32(TCTL, tctl);
+
+			/* Perform any post-link-up configuration before
+			 * reporting link up.
+			 */
+			if (phy->ops.cfg_on_link_up)
+				phy->ops.cfg_on_link_up(hw);
+
+			netif_wake_queue(netdev);
+			netif_carrier_on(netdev);
+
+			if (!test_bit(__E1000_DOWN, &adapter->state))
+				mod_timer(&adapter->phy_info_timer,
+					  round_jiffies(jiffies + 2 * HZ));
+		}
+	} else {
+		if (netif_carrier_ok(netdev)) {
+			adapter->link_speed = 0;
+			adapter->link_duplex = 0;
+			/* Link status message must follow this format */
+			netdev_info(netdev, "NIC Link is Down\n");
+			netif_carrier_off(netdev);
+			netif_stop_queue(netdev);
+			if (!test_bit(__E1000_DOWN, &adapter->state))
+				mod_timer(&adapter->phy_info_timer,
+					  round_jiffies(jiffies + 2 * HZ));
+
+			/* 8000ES2LAN requires a Rx packet buffer work-around
+			 * on link down event; reset the controller to flush
+			 * the Rx packet buffer.
+			 */
+			if (adapter->flags & FLAG_RX_NEEDS_RESTART)
+				adapter->flags |= FLAG_RESTART_NOW;
+			else
+				pm_schedule_suspend(netdev->dev.parent,
+						    LINK_TIMEOUT);
+		}
+	}
+
+link_up:
+	spin_lock(&adapter->stats64_lock);
+	e1000e_update_stats(adapter);
+
+	mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
+	adapter->tpt_old = adapter->stats.tpt;
+	mac->collision_delta = adapter->stats.colc - adapter->colc_old;
+	adapter->colc_old = adapter->stats.colc;
+
+	adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
+	adapter->gorc_old = adapter->stats.gorc;
+	adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
+	adapter->gotc_old = adapter->stats.gotc;
+	spin_unlock(&adapter->stats64_lock);
+
+	/* If the link is lost the controller stops DMA, but
+	 * if there is queued Tx work it cannot be done.  So
+	 * reset the controller to flush the Tx packet buffers.
+	 */
+	if (!netif_carrier_ok(netdev) &&
+	    (e1000_desc_unused(tx_ring) + 1 < tx_ring->count))
+		adapter->flags |= FLAG_RESTART_NOW;
+
+	/* If reset is necessary, do it outside of interrupt context. */
+	if (adapter->flags & FLAG_RESTART_NOW) {
+		schedule_work(&adapter->reset_task);
+		/* return immediately since reset is imminent */
+		return;
+	}
+
+	e1000e_update_adaptive(&adapter->hw);
+
+	/* Simple mode for Interrupt Throttle Rate (ITR) */
+	if (adapter->itr_setting == 4) {
+		/* Symmetric Tx/Rx gets a reduced ITR=2000;
+		 * Total asymmetrical Tx or Rx gets ITR=8000;
+		 * everyone else is between 2000-8000.
+		 */
+		u32 goc = (adapter->gotc + adapter->gorc) / 10000;
+		u32 dif = (adapter->gotc > adapter->gorc ?
+			   adapter->gotc - adapter->gorc :
+			   adapter->gorc - adapter->gotc) / 10000;
+		u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
+
+		e1000e_write_itr(adapter, itr);
+	}
+
+	/* Cause software interrupt to ensure Rx ring is cleaned */
+	if (adapter->msix_entries)
+		ew32(ICS, adapter->rx_ring->ims_val);
+	else
+		ew32(ICS, E1000_ICS_RXDMT0);
+
+	/* flush pending descriptors to memory before detecting Tx hang */
+	e1000e_flush_descriptors(adapter);
+
+	/* Force detection of hung controller every watchdog period */
+	adapter->detect_tx_hung = true;
+
+	/* With 82571 controllers, LAA may be overwritten due to controller
+	 * reset from the other port. Set the appropriate LAA in RAR[0]
+	 */
+	if (e1000e_get_laa_state_82571(hw))
+		hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0);
+
+	if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
+		e1000e_check_82574_phy_workaround(adapter);
+
+	/* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */
+	if (adapter->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) {
+		if ((adapter->flags2 & FLAG2_CHECK_RX_HWTSTAMP) &&
+		    (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) {
+			er32(RXSTMPH);
+			adapter->rx_hwtstamp_cleared++;
+		} else {
+			adapter->flags2 |= FLAG2_CHECK_RX_HWTSTAMP;
+		}
+	}
+
+	/* Reset the timer */
+	if (!test_bit(__E1000_DOWN, &adapter->state))
+		mod_timer(&adapter->watchdog_timer,
+			  round_jiffies(jiffies + 2 * HZ));
+}
+
+#define E1000_TX_FLAGS_CSUM		0x00000001
+#define E1000_TX_FLAGS_VLAN		0x00000002
+#define E1000_TX_FLAGS_TSO		0x00000004
+#define E1000_TX_FLAGS_IPV4		0x00000008
+#define E1000_TX_FLAGS_NO_FCS		0x00000010
+#define E1000_TX_FLAGS_HWTSTAMP		0x00000020
+#define E1000_TX_FLAGS_VLAN_MASK	0xffff0000
+#define E1000_TX_FLAGS_VLAN_SHIFT	16
+
+static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb,
+		     __be16 protocol)
+{
+	struct e1000_context_desc *context_desc;
+	struct e1000_buffer *buffer_info;
+	unsigned int i;
+	u32 cmd_length = 0;
+	u16 ipcse = 0, mss;
+	u8 ipcss, ipcso, tucss, tucso, hdr_len;
+	int err;
+
+	if (!skb_is_gso(skb))
+		return 0;
+
+	err = skb_cow_head(skb, 0);
+	if (err < 0)
+		return err;
+
+	hdr_len = skb_tcp_all_headers(skb);
+	mss = skb_shinfo(skb)->gso_size;
+	if (protocol == htons(ETH_P_IP)) {
+		struct iphdr *iph = ip_hdr(skb);
+		iph->tot_len = 0;
+		iph->check = 0;
+		tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+							 0, IPPROTO_TCP, 0);
+		cmd_length = E1000_TXD_CMD_IP;
+		ipcse = skb_transport_offset(skb) - 1;
+	} else if (skb_is_gso_v6(skb)) {
+		tcp_v6_gso_csum_prep(skb);
+		ipcse = 0;
+	}
+	ipcss = skb_network_offset(skb);
+	ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
+	tucss = skb_transport_offset(skb);
+	tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
+
+	cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
+		       E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
+
+	i = tx_ring->next_to_use;
+	context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
+	buffer_info = &tx_ring->buffer_info[i];
+
+	context_desc->lower_setup.ip_fields.ipcss = ipcss;
+	context_desc->lower_setup.ip_fields.ipcso = ipcso;
+	context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
+	context_desc->upper_setup.tcp_fields.tucss = tucss;
+	context_desc->upper_setup.tcp_fields.tucso = tucso;
+	context_desc->upper_setup.tcp_fields.tucse = 0;
+	context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
+	context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
+	context_desc->cmd_and_length = cpu_to_le32(cmd_length);
+
+	buffer_info->time_stamp = jiffies;
+	buffer_info->next_to_watch = i;
+
+	i++;
+	if (i == tx_ring->count)
+		i = 0;
+	tx_ring->next_to_use = i;
+
+	return 1;
+}
+
+static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb,
+			  __be16 protocol)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct e1000_context_desc *context_desc;
+	struct e1000_buffer *buffer_info;
+	unsigned int i;
+	u8 css;
+	u32 cmd_len = E1000_TXD_CMD_DEXT;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return false;
+
+	switch (protocol) {
+	case cpu_to_be16(ETH_P_IP):
+		if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+			cmd_len |= E1000_TXD_CMD_TCP;
+		break;
+	case cpu_to_be16(ETH_P_IPV6):
+		/* XXX not handling all IPV6 headers */
+		if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+			cmd_len |= E1000_TXD_CMD_TCP;
+		break;
+	default:
+		if (unlikely(net_ratelimit()))
+			e_warn("checksum_partial proto=%x!\n",
+			       be16_to_cpu(protocol));
+		break;
+	}
+
+	css = skb_checksum_start_offset(skb);
+
+	i = tx_ring->next_to_use;
+	buffer_info = &tx_ring->buffer_info[i];
+	context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
+
+	context_desc->lower_setup.ip_config = 0;
+	context_desc->upper_setup.tcp_fields.tucss = css;
+	context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset;
+	context_desc->upper_setup.tcp_fields.tucse = 0;
+	context_desc->tcp_seg_setup.data = 0;
+	context_desc->cmd_and_length = cpu_to_le32(cmd_len);
+
+	buffer_info->time_stamp = jiffies;
+	buffer_info->next_to_watch = i;
+
+	i++;
+	if (i == tx_ring->count)
+		i = 0;
+	tx_ring->next_to_use = i;
+
+	return true;
+}
+
+static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
+			unsigned int first, unsigned int max_per_txd,
+			unsigned int nr_frags)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	struct e1000_buffer *buffer_info;
+	unsigned int len = skb_headlen(skb);
+	unsigned int offset = 0, size, count = 0, i;
+	unsigned int f, bytecount, segs;
+
+	i = tx_ring->next_to_use;
+
+	while (len) {
+		buffer_info = &tx_ring->buffer_info[i];
+		size = min(len, max_per_txd);
+
+		buffer_info->length = size;
+		buffer_info->time_stamp = jiffies;
+		buffer_info->next_to_watch = i;
+		buffer_info->dma = dma_map_single(&pdev->dev,
+						  skb->data + offset,
+						  size, DMA_TO_DEVICE);
+		buffer_info->mapped_as_page = false;
+		if (dma_mapping_error(&pdev->dev, buffer_info->dma))
+			goto dma_error;
+
+		len -= size;
+		offset += size;
+		count++;
+
+		if (len) {
+			i++;
+			if (i == tx_ring->count)
+				i = 0;
+		}
+	}
+
+	for (f = 0; f < nr_frags; f++) {
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[f];
+
+		len = skb_frag_size(frag);
+		offset = 0;
+
+		while (len) {
+			i++;
+			if (i == tx_ring->count)
+				i = 0;
+
+			buffer_info = &tx_ring->buffer_info[i];
+			size = min(len, max_per_txd);
+
+			buffer_info->length = size;
+			buffer_info->time_stamp = jiffies;
+			buffer_info->next_to_watch = i;
+			buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
+							    offset, size,
+							    DMA_TO_DEVICE);
+			buffer_info->mapped_as_page = true;
+			if (dma_mapping_error(&pdev->dev, buffer_info->dma))
+				goto dma_error;
+
+			len -= size;
+			offset += size;
+			count++;
+		}
+	}
+
+	segs = skb_shinfo(skb)->gso_segs ? : 1;
+	/* multiply data chunks by size of headers */
+	bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
+
+	tx_ring->buffer_info[i].skb = skb;
+	tx_ring->buffer_info[i].segs = segs;
+	tx_ring->buffer_info[i].bytecount = bytecount;
+	tx_ring->buffer_info[first].next_to_watch = i;
+
+	return count;
+
+dma_error:
+	dev_err(&pdev->dev, "Tx DMA map failed\n");
+	buffer_info->dma = 0;
+	if (count)
+		count--;
+
+	while (count--) {
+		if (i == 0)
+			i += tx_ring->count;
+		i--;
+		buffer_info = &tx_ring->buffer_info[i];
+		e1000_put_txbuf(tx_ring, buffer_info, true);
+	}
+
+	return 0;
+}
+
+static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+	struct e1000_tx_desc *tx_desc = NULL;
+	struct e1000_buffer *buffer_info;
+	u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
+	unsigned int i;
+
+	if (tx_flags & E1000_TX_FLAGS_TSO) {
+		txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
+		    E1000_TXD_CMD_TSE;
+		txd_upper |= E1000_TXD_POPTS_TXSM << 8;
+
+		if (tx_flags & E1000_TX_FLAGS_IPV4)
+			txd_upper |= E1000_TXD_POPTS_IXSM << 8;
+	}
+
+	if (tx_flags & E1000_TX_FLAGS_CSUM) {
+		txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
+		txd_upper |= E1000_TXD_POPTS_TXSM << 8;
+	}
+
+	if (tx_flags & E1000_TX_FLAGS_VLAN) {
+		txd_lower |= E1000_TXD_CMD_VLE;
+		txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
+	}
+
+	if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
+		txd_lower &= ~(E1000_TXD_CMD_IFCS);
+
+	if (unlikely(tx_flags & E1000_TX_FLAGS_HWTSTAMP)) {
+		txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
+		txd_upper |= E1000_TXD_EXTCMD_TSTAMP;
+	}
+
+	i = tx_ring->next_to_use;
+
+	do {
+		buffer_info = &tx_ring->buffer_info[i];
+		tx_desc = E1000_TX_DESC(*tx_ring, i);
+		tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
+		tx_desc->lower.data = cpu_to_le32(txd_lower |
+						  buffer_info->length);
+		tx_desc->upper.data = cpu_to_le32(txd_upper);
+
+		i++;
+		if (i == tx_ring->count)
+			i = 0;
+	} while (--count > 0);
+
+	tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
+
+	/* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
+	if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
+		tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
+
+	/* Force memory writes to complete before letting h/w
+	 * know there are new descriptors to fetch.  (Only
+	 * applicable for weak-ordered memory model archs,
+	 * such as IA-64).
+	 */
+	wmb();
+
+	tx_ring->next_to_use = i;
+}
+
+#define MINIMUM_DHCP_PACKET_SIZE 282
+static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
+				    struct sk_buff *skb)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u16 length, offset;
+
+	if (skb_vlan_tag_present(skb) &&
+	    !((skb_vlan_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
+	      (adapter->hw.mng_cookie.status &
+	       E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
+		return 0;
+
+	if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
+		return 0;
+
+	if (((struct ethhdr *)skb->data)->h_proto != htons(ETH_P_IP))
+		return 0;
+
+	{
+		const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data + 14);
+		struct udphdr *udp;
+
+		if (ip->protocol != IPPROTO_UDP)
+			return 0;
+
+		udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
+		if (ntohs(udp->dest) != 67)
+			return 0;
+
+		offset = (u8 *)udp + 8 - skb->data;
+		length = skb->len - offset;
+		return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
+	}
+
+	return 0;
+}
+
+static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
+{
+	struct e1000_adapter *adapter = tx_ring->adapter;
+
+	netif_stop_queue(adapter->netdev);
+	/* Herbert's original patch had:
+	 *  smp_mb__after_netif_stop_queue();
+	 * but since that doesn't exist yet, just open code it.
+	 */
+	smp_mb();
+
+	/* We need to check again in a case another CPU has just
+	 * made room available.
+	 */
+	if (e1000_desc_unused(tx_ring) < size)
+		return -EBUSY;
+
+	/* A reprieve! */
+	netif_start_queue(adapter->netdev);
+	++adapter->restart_queue;
+	return 0;
+}
+
+static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
+{
+	BUG_ON(size > tx_ring->count);
+
+	if (e1000_desc_unused(tx_ring) >= size)
+		return 0;
+	return __e1000_maybe_stop_tx(tx_ring, size);
+}
+
+static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
+				    struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_ring *tx_ring = adapter->tx_ring;
+	unsigned int first;
+	unsigned int tx_flags = 0;
+	unsigned int len = skb_headlen(skb);
+	unsigned int nr_frags;
+	unsigned int mss;
+	int count = 0;
+	int tso;
+	unsigned int f;
+	__be16 protocol = vlan_get_protocol(skb);
+
+	if (test_bit(__E1000_DOWN, &adapter->state)) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (skb->len <= 0) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	/* The minimum packet size with TCTL.PSP set is 17 bytes so
+	 * pad skb in order to meet this minimum size requirement
+	 */
+	if (skb_put_padto(skb, 17))
+		return NETDEV_TX_OK;
+
+	mss = skb_shinfo(skb)->gso_size;
+	if (mss) {
+		u8 hdr_len;
+
+		/* TSO Workaround for 82571/2/3 Controllers -- if skb->data
+		 * points to just header, pull a few bytes of payload from
+		 * frags into skb->data
+		 */
+		hdr_len = skb_tcp_all_headers(skb);
+		/* we do this workaround for ES2LAN, but it is un-necessary,
+		 * avoiding it could save a lot of cycles
+		 */
+		if (skb->data_len && (hdr_len == len)) {
+			unsigned int pull_size;
+
+			pull_size = min_t(unsigned int, 4, skb->data_len);
+			if (!__pskb_pull_tail(skb, pull_size)) {
+				e_err("__pskb_pull_tail failed.\n");
+				dev_kfree_skb_any(skb);
+				return NETDEV_TX_OK;
+			}
+			len = skb_headlen(skb);
+		}
+	}
+
+	/* reserve a descriptor for the offload context */
+	if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
+		count++;
+	count++;
+
+	count += DIV_ROUND_UP(len, adapter->tx_fifo_limit);
+
+	nr_frags = skb_shinfo(skb)->nr_frags;
+	for (f = 0; f < nr_frags; f++)
+		count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]),
+				      adapter->tx_fifo_limit);
+
+	if (adapter->hw.mac.tx_pkt_filtering)
+		e1000_transfer_dhcp_info(adapter, skb);
+
+	/* need: count + 2 desc gap to keep tail from touching
+	 * head, otherwise try next time
+	 */
+	if (e1000_maybe_stop_tx(tx_ring, count + 2))
+		return NETDEV_TX_BUSY;
+
+	if (skb_vlan_tag_present(skb)) {
+		tx_flags |= E1000_TX_FLAGS_VLAN;
+		tx_flags |= (skb_vlan_tag_get(skb) <<
+			     E1000_TX_FLAGS_VLAN_SHIFT);
+	}
+
+	first = tx_ring->next_to_use;
+
+	tso = e1000_tso(tx_ring, skb, protocol);
+	if (tso < 0) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (tso)
+		tx_flags |= E1000_TX_FLAGS_TSO;
+	else if (e1000_tx_csum(tx_ring, skb, protocol))
+		tx_flags |= E1000_TX_FLAGS_CSUM;
+
+	/* Old method was to assume IPv4 packet by default if TSO was enabled.
+	 * 82571 hardware supports TSO capabilities for IPv6 as well...
+	 * no longer assume, we must.
+	 */
+	if (protocol == htons(ETH_P_IP))
+		tx_flags |= E1000_TX_FLAGS_IPV4;
+
+	if (unlikely(skb->no_fcs))
+		tx_flags |= E1000_TX_FLAGS_NO_FCS;
+
+	/* if count is 0 then mapping error has occurred */
+	count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit,
+			     nr_frags);
+	if (count) {
+		if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
+		    (adapter->flags & FLAG_HAS_HW_TIMESTAMP)) {
+			if (!adapter->tx_hwtstamp_skb) {
+				skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+				tx_flags |= E1000_TX_FLAGS_HWTSTAMP;
+				adapter->tx_hwtstamp_skb = skb_get(skb);
+				adapter->tx_hwtstamp_start = jiffies;
+				schedule_work(&adapter->tx_hwtstamp_work);
+			} else {
+				adapter->tx_hwtstamp_skipped++;
+			}
+		}
+
+		skb_tx_timestamp(skb);
+
+		netdev_sent_queue(netdev, skb->len);
+		e1000_tx_queue(tx_ring, tx_flags, count);
+		/* Make sure there is space in the ring for the next send. */
+		e1000_maybe_stop_tx(tx_ring,
+				    ((MAX_SKB_FRAGS + 1) *
+				     DIV_ROUND_UP(PAGE_SIZE,
+						  adapter->tx_fifo_limit) + 4));
+
+		if (!netdev_xmit_more() ||
+		    netif_xmit_stopped(netdev_get_tx_queue(netdev, 0))) {
+			if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+				e1000e_update_tdt_wa(tx_ring,
+						     tx_ring->next_to_use);
+			else
+				writel(tx_ring->next_to_use, tx_ring->tail);
+		}
+	} else {
+		dev_kfree_skb_any(skb);
+		tx_ring->buffer_info[first].time_stamp = 0;
+		tx_ring->next_to_use = first;
+	}
+
+	return NETDEV_TX_OK;
+}
+
+/**
+ * e1000_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ * @txqueue: index of the hung queue (unused)
+ **/
+static void e1000_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	/* Do the reset outside of interrupt context */
+	adapter->tx_timeout_count++;
+	schedule_work(&adapter->reset_task);
+}
+
+static void e1000_reset_task(struct work_struct *work)
+{
+	struct e1000_adapter *adapter;
+	adapter = container_of(work, struct e1000_adapter, reset_task);
+
+	rtnl_lock();
+	/* don't run the task if already down */
+	if (test_bit(__E1000_DOWN, &adapter->state)) {
+		rtnl_unlock();
+		return;
+	}
+
+	if (!(adapter->flags & FLAG_RESTART_NOW)) {
+		e1000e_dump(adapter);
+		e_err("Reset adapter unexpectedly\n");
+	}
+	e1000e_reinit_locked(adapter);
+	rtnl_unlock();
+}
+
+/**
+ * e1000e_get_stats64 - Get System Network Statistics
+ * @netdev: network interface device structure
+ * @stats: rtnl_link_stats64 pointer
+ *
+ * Returns the address of the device statistics structure.
+ **/
+void e1000e_get_stats64(struct net_device *netdev,
+			struct rtnl_link_stats64 *stats)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	spin_lock(&adapter->stats64_lock);
+	e1000e_update_stats(adapter);
+	/* Fill out the OS statistics structure */
+	stats->rx_bytes = adapter->stats.gorc;
+	stats->rx_packets = adapter->stats.gprc;
+	stats->tx_bytes = adapter->stats.gotc;
+	stats->tx_packets = adapter->stats.gptc;
+	stats->multicast = adapter->stats.mprc;
+	stats->collisions = adapter->stats.colc;
+
+	/* Rx Errors */
+
+	/* RLEC on some newer hardware can be incorrect so build
+	 * our own version based on RUC and ROC
+	 */
+	stats->rx_errors = adapter->stats.rxerrc +
+	    adapter->stats.crcerrs + adapter->stats.algnerrc +
+	    adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr;
+	stats->rx_length_errors = adapter->stats.ruc + adapter->stats.roc;
+	stats->rx_crc_errors = adapter->stats.crcerrs;
+	stats->rx_frame_errors = adapter->stats.algnerrc;
+	stats->rx_missed_errors = adapter->stats.mpc;
+
+	/* Tx Errors */
+	stats->tx_errors = adapter->stats.ecol + adapter->stats.latecol;
+	stats->tx_aborted_errors = adapter->stats.ecol;
+	stats->tx_window_errors = adapter->stats.latecol;
+	stats->tx_carrier_errors = adapter->stats.tncrs;
+
+	/* Tx Dropped needs to be maintained elsewhere */
+
+	spin_unlock(&adapter->stats64_lock);
+}
+
+/**
+ * e1000_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	int max_frame = new_mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+
+	/* Jumbo frame support */
+	if ((new_mtu > ETH_DATA_LEN) &&
+	    !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
+		e_err("Jumbo Frames not supported.\n");
+		return -EINVAL;
+	}
+
+	/* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
+	if ((adapter->hw.mac.type >= e1000_pch2lan) &&
+	    !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
+	    (new_mtu > ETH_DATA_LEN)) {
+		e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
+		return -EINVAL;
+	}
+
+	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
+		usleep_range(1000, 1100);
+	/* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
+	adapter->max_frame_size = max_frame;
+	netdev_dbg(netdev, "changing MTU from %d to %d\n",
+		   netdev->mtu, new_mtu);
+	netdev->mtu = new_mtu;
+
+	pm_runtime_get_sync(netdev->dev.parent);
+
+	if (netif_running(netdev))
+		e1000e_down(adapter, true);
+
+	/* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
+	 * means we reserve 2 more, this pushes us to allocate from the next
+	 * larger slab size.
+	 * i.e. RXBUFFER_2048 --> size-4096 slab
+	 * However with the new *_jumbo_rx* routines, jumbo receives will use
+	 * fragmented skbs
+	 */
+
+	if (max_frame <= 2048)
+		adapter->rx_buffer_len = 2048;
+	else
+		adapter->rx_buffer_len = 4096;
+
+	/* adjust allocation if LPE protects us, and we aren't using SBP */
+	if (max_frame <= (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN))
+		adapter->rx_buffer_len = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
+
+	if (netif_running(netdev))
+		e1000e_up(adapter);
+	else
+		e1000e_reset(adapter);
+
+	pm_runtime_put_sync(netdev->dev.parent);
+
+	clear_bit(__E1000_RESETTING, &adapter->state);
+
+	return 0;
+}
+
+static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
+			   int cmd)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct mii_ioctl_data *data = if_mii(ifr);
+
+	if (adapter->hw.phy.media_type != e1000_media_type_copper)
+		return -EOPNOTSUPP;
+
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		data->phy_id = adapter->hw.phy.addr;
+		break;
+	case SIOCGMIIREG:
+		e1000_phy_read_status(adapter);
+
+		switch (data->reg_num & 0x1F) {
+		case MII_BMCR:
+			data->val_out = adapter->phy_regs.bmcr;
+			break;
+		case MII_BMSR:
+			data->val_out = adapter->phy_regs.bmsr;
+			break;
+		case MII_PHYSID1:
+			data->val_out = (adapter->hw.phy.id >> 16);
+			break;
+		case MII_PHYSID2:
+			data->val_out = (adapter->hw.phy.id & 0xFFFF);
+			break;
+		case MII_ADVERTISE:
+			data->val_out = adapter->phy_regs.advertise;
+			break;
+		case MII_LPA:
+			data->val_out = adapter->phy_regs.lpa;
+			break;
+		case MII_EXPANSION:
+			data->val_out = adapter->phy_regs.expansion;
+			break;
+		case MII_CTRL1000:
+			data->val_out = adapter->phy_regs.ctrl1000;
+			break;
+		case MII_STAT1000:
+			data->val_out = adapter->phy_regs.stat1000;
+			break;
+		case MII_ESTATUS:
+			data->val_out = adapter->phy_regs.estatus;
+			break;
+		default:
+			return -EIO;
+		}
+		break;
+	case SIOCSMIIREG:
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+
+/**
+ * e1000e_hwtstamp_set - control hardware time stamping
+ * @netdev: network interface device structure
+ * @ifr: interface request
+ *
+ * Outgoing time stamping can be enabled and disabled. Play nice and
+ * disable it when requested, although it shouldn't cause any overhead
+ * when no packet needs it. At most one packet in the queue may be
+ * marked for time stamping, otherwise it would be impossible to tell
+ * for sure to which packet the hardware time stamp belongs.
+ *
+ * Incoming time stamping has to be configured via the hardware filters.
+ * Not all combinations are supported, in particular event type has to be
+ * specified. Matching the kind of event packet is not supported, with the
+ * exception of "all V2 events regardless of level 2 or 4".
+ **/
+static int e1000e_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct hwtstamp_config config;
+	int ret_val;
+
+	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+		return -EFAULT;
+
+	ret_val = e1000e_config_hwtstamp(adapter, &config);
+	if (ret_val)
+		return ret_val;
+
+	switch (config.rx_filter) {
+	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_SYNC:
+	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+		/* With V2 type filters which specify a Sync or Delay Request,
+		 * Path Delay Request/Response messages are also time stamped
+		 * by hardware so notify the caller the requested packets plus
+		 * some others are time stamped.
+		 */
+		config.rx_filter = HWTSTAMP_FILTER_SOME;
+		break;
+	default:
+		break;
+	}
+
+	return copy_to_user(ifr->ifr_data, &config,
+			    sizeof(config)) ? -EFAULT : 0;
+}
+
+static int e1000e_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	return copy_to_user(ifr->ifr_data, &adapter->hwtstamp_config,
+			    sizeof(adapter->hwtstamp_config)) ? -EFAULT : 0;
+}
+
+static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	switch (cmd) {
+	case SIOCGMIIPHY:
+	case SIOCGMIIREG:
+	case SIOCSMIIREG:
+		return e1000_mii_ioctl(netdev, ifr, cmd);
+	case SIOCSHWTSTAMP:
+		return e1000e_hwtstamp_set(netdev, ifr);
+	case SIOCGHWTSTAMP:
+		return e1000e_hwtstamp_get(netdev, ifr);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 i, mac_reg, wuc;
+	u16 phy_reg, wuc_enable;
+	int retval;
+
+	/* copy MAC RARs to PHY RARs */
+	e1000_copy_rx_addrs_to_phy_ich8lan(hw);
+
+	retval = hw->phy.ops.acquire(hw);
+	if (retval) {
+		e_err("Could not acquire PHY\n");
+		return retval;
+	}
+
+	/* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
+	retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
+	if (retval)
+		goto release;
+
+	/* copy MAC MTA to PHY MTA - only needed for pchlan */
+	for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
+		mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
+		hw->phy.ops.write_reg_page(hw, BM_MTA(i),
+					   (u16)(mac_reg & 0xFFFF));
+		hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
+					   (u16)((mac_reg >> 16) & 0xFFFF));
+	}
+
+	/* configure PHY Rx Control register */
+	hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
+	mac_reg = er32(RCTL);
+	if (mac_reg & E1000_RCTL_UPE)
+		phy_reg |= BM_RCTL_UPE;
+	if (mac_reg & E1000_RCTL_MPE)
+		phy_reg |= BM_RCTL_MPE;
+	phy_reg &= ~(BM_RCTL_MO_MASK);
+	if (mac_reg & E1000_RCTL_MO_3)
+		phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
+			    << BM_RCTL_MO_SHIFT);
+	if (mac_reg & E1000_RCTL_BAM)
+		phy_reg |= BM_RCTL_BAM;
+	if (mac_reg & E1000_RCTL_PMCF)
+		phy_reg |= BM_RCTL_PMCF;
+	mac_reg = er32(CTRL);
+	if (mac_reg & E1000_CTRL_RFCE)
+		phy_reg |= BM_RCTL_RFCE;
+	hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
+
+	wuc = E1000_WUC_PME_EN;
+	if (wufc & (E1000_WUFC_MAG | E1000_WUFC_LNKC))
+		wuc |= E1000_WUC_APME;
+
+	/* enable PHY wakeup in MAC register */
+	ew32(WUFC, wufc);
+	ew32(WUC, (E1000_WUC_PHY_WAKE | E1000_WUC_APMPME |
+		   E1000_WUC_PME_STATUS | wuc));
+
+	/* configure and enable PHY wakeup in PHY registers */
+	hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
+	hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, wuc);
+
+	/* activate PHY wakeup */
+	wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
+	retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
+	if (retval)
+		e_err("Could not set PHY Host Wakeup bit\n");
+release:
+	hw->phy.ops.release(hw);
+
+	return retval;
+}
+
+static void e1000e_flush_lpic(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ret_val;
+
+	pm_runtime_get_sync(netdev->dev.parent);
+
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		goto fl_out;
+
+	pr_info("EEE TX LPI TIMER: %08X\n",
+		er32(LPIC) >> E1000_LPIC_LPIET_SHIFT);
+
+	hw->phy.ops.release(hw);
+
+fl_out:
+	pm_runtime_put_sync(netdev->dev.parent);
+}
+
+/* S0ix implementation */
+static void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	u32 mac_data;
+	u16 phy_data;
+
+	if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID &&
+	    hw->mac.type >= e1000_pch_adp) {
+		/* Request ME configure the device for S0ix */
+		mac_data = er32(H2ME);
+		mac_data |= E1000_H2ME_START_DPG;
+		mac_data &= ~E1000_H2ME_EXIT_DPG;
+		ew32(H2ME, mac_data);
+	} else {
+		/* Request driver configure the device to S0ix */
+		/* Disable the periodic inband message,
+		 * don't request PCIe clock in K1 page770_17[10:9] = 10b
+		 */
+		e1e_rphy(hw, HV_PM_CTRL, &phy_data);
+		phy_data &= ~HV_PM_CTRL_K1_CLK_REQ;
+		phy_data |= BIT(10);
+		e1e_wphy(hw, HV_PM_CTRL, phy_data);
+
+		/* Make sure we don't exit K1 every time a new packet arrives
+		 * 772_29[5] = 1 CS_Mode_Stay_In_K1
+		 */
+		e1e_rphy(hw, I217_CGFREG, &phy_data);
+		phy_data |= BIT(5);
+		e1e_wphy(hw, I217_CGFREG, phy_data);
+
+		/* Change the MAC/PHY interface to SMBus
+		 * Force the SMBus in PHY page769_23[0] = 1
+		 * Force the SMBus in MAC CTRL_EXT[11] = 1
+		 */
+		e1e_rphy(hw, CV_SMB_CTRL, &phy_data);
+		phy_data |= CV_SMB_CTRL_FORCE_SMBUS;
+		e1e_wphy(hw, CV_SMB_CTRL, phy_data);
+		mac_data = er32(CTRL_EXT);
+		mac_data |= E1000_CTRL_EXT_FORCE_SMBUS;
+		ew32(CTRL_EXT, mac_data);
+
+		/* DFT control: PHY bit: page769_20[0] = 1
+		 * page769_20[7] - PHY PLL stop
+		 * page769_20[8] - PHY go to the electrical idle
+		 * page769_20[9] - PHY serdes disable
+		 * Gate PPW via EXTCNF_CTRL - set 0x0F00[7] = 1
+		 */
+		e1e_rphy(hw, I82579_DFT_CTRL, &phy_data);
+		phy_data |= BIT(0);
+		phy_data |= BIT(7);
+		phy_data |= BIT(8);
+		phy_data |= BIT(9);
+		e1e_wphy(hw, I82579_DFT_CTRL, phy_data);
+
+		mac_data = er32(EXTCNF_CTRL);
+		mac_data |= E1000_EXTCNF_CTRL_GATE_PHY_CFG;
+		ew32(EXTCNF_CTRL, mac_data);
+
+		/* Enable the Dynamic Power Gating in the MAC */
+		mac_data = er32(FEXTNVM7);
+		mac_data |= BIT(22);
+		ew32(FEXTNVM7, mac_data);
+
+		/* Disable disconnected cable conditioning for Power Gating */
+		mac_data = er32(DPGFR);
+		mac_data |= BIT(2);
+		ew32(DPGFR, mac_data);
+
+		/* Don't wake from dynamic Power Gating with clock request */
+		mac_data = er32(FEXTNVM12);
+		mac_data |= BIT(12);
+		ew32(FEXTNVM12, mac_data);
+
+		/* Ungate PGCB clock */
+		mac_data = er32(FEXTNVM9);
+		mac_data &= ~BIT(28);
+		ew32(FEXTNVM9, mac_data);
+
+		/* Enable K1 off to enable mPHY Power Gating */
+		mac_data = er32(FEXTNVM6);
+		mac_data |= BIT(31);
+		ew32(FEXTNVM6, mac_data);
+
+		/* Enable mPHY power gating for any link and speed */
+		mac_data = er32(FEXTNVM8);
+		mac_data |= BIT(9);
+		ew32(FEXTNVM8, mac_data);
+
+		/* Enable the Dynamic Clock Gating in the DMA and MAC */
+		mac_data = er32(CTRL_EXT);
+		mac_data |= E1000_CTRL_EXT_DMA_DYN_CLK_EN;
+		ew32(CTRL_EXT, mac_data);
+
+		/* No MAC DPG gating SLP_S0 in modern standby
+		 * Switch the logic of the lanphypc to use PMC counter
+		 */
+		mac_data = er32(FEXTNVM5);
+		mac_data |= BIT(7);
+		ew32(FEXTNVM5, mac_data);
+	}
+
+	/* Disable the time synchronization clock */
+	mac_data = er32(FEXTNVM7);
+	mac_data |= BIT(31);
+	mac_data &= ~BIT(0);
+	ew32(FEXTNVM7, mac_data);
+
+	/* Dynamic Power Gating Enable */
+	mac_data = er32(CTRL_EXT);
+	mac_data |= BIT(3);
+	ew32(CTRL_EXT, mac_data);
+
+	/* Check MAC Tx/Rx packet buffer pointers.
+	 * Reset MAC Tx/Rx packet buffer pointers to suppress any
+	 * pending traffic indication that would prevent power gating.
+	 */
+	mac_data = er32(TDFH);
+	if (mac_data)
+		ew32(TDFH, 0);
+	mac_data = er32(TDFT);
+	if (mac_data)
+		ew32(TDFT, 0);
+	mac_data = er32(TDFHS);
+	if (mac_data)
+		ew32(TDFHS, 0);
+	mac_data = er32(TDFTS);
+	if (mac_data)
+		ew32(TDFTS, 0);
+	mac_data = er32(TDFPC);
+	if (mac_data)
+		ew32(TDFPC, 0);
+	mac_data = er32(RDFH);
+	if (mac_data)
+		ew32(RDFH, 0);
+	mac_data = er32(RDFT);
+	if (mac_data)
+		ew32(RDFT, 0);
+	mac_data = er32(RDFHS);
+	if (mac_data)
+		ew32(RDFHS, 0);
+	mac_data = er32(RDFTS);
+	if (mac_data)
+		ew32(RDFTS, 0);
+	mac_data = er32(RDFPC);
+	if (mac_data)
+		ew32(RDFPC, 0);
+}
+
+static void e1000e_s0ix_exit_flow(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	bool firmware_bug = false;
+	u32 mac_data;
+	u16 phy_data;
+	u32 i = 0;
+
+	if (er32(FWSM) & E1000_ICH_FWSM_FW_VALID &&
+	    hw->mac.type >= e1000_pch_adp) {
+		/* Keep the GPT clock enabled for CSME */
+		mac_data = er32(FEXTNVM);
+		mac_data |= BIT(3);
+		ew32(FEXTNVM, mac_data);
+		/* Request ME unconfigure the device from S0ix */
+		mac_data = er32(H2ME);
+		mac_data &= ~E1000_H2ME_START_DPG;
+		mac_data |= E1000_H2ME_EXIT_DPG;
+		ew32(H2ME, mac_data);
+
+		/* Poll up to 2.5 seconds for ME to unconfigure DPG.
+		 * If this takes more than 1 second, show a warning indicating a
+		 * firmware bug
+		 */
+		while (!(er32(EXFWSM) & E1000_EXFWSM_DPG_EXIT_DONE)) {
+			if (i > 100 && !firmware_bug)
+				firmware_bug = true;
+
+			if (i++ == 250) {
+				e_dbg("Timeout (firmware bug): %d msec\n",
+				      i * 10);
+				break;
+			}
+
+			usleep_range(10000, 11000);
+		}
+		if (firmware_bug)
+			e_warn("DPG_EXIT_DONE took %d msec. This is a firmware bug\n",
+			       i * 10);
+		else
+			e_dbg("DPG_EXIT_DONE cleared after %d msec\n", i * 10);
+	} else {
+		/* Request driver unconfigure the device from S0ix */
+
+		/* Disable the Dynamic Power Gating in the MAC */
+		mac_data = er32(FEXTNVM7);
+		mac_data &= 0xFFBFFFFF;
+		ew32(FEXTNVM7, mac_data);
+
+		/* Disable mPHY power gating for any link and speed */
+		mac_data = er32(FEXTNVM8);
+		mac_data &= ~BIT(9);
+		ew32(FEXTNVM8, mac_data);
+
+		/* Disable K1 off */
+		mac_data = er32(FEXTNVM6);
+		mac_data &= ~BIT(31);
+		ew32(FEXTNVM6, mac_data);
+
+		/* Disable Ungate PGCB clock */
+		mac_data = er32(FEXTNVM9);
+		mac_data |= BIT(28);
+		ew32(FEXTNVM9, mac_data);
+
+		/* Cancel not waking from dynamic
+		 * Power Gating with clock request
+		 */
+		mac_data = er32(FEXTNVM12);
+		mac_data &= ~BIT(12);
+		ew32(FEXTNVM12, mac_data);
+
+		/* Cancel disable disconnected cable conditioning
+		 * for Power Gating
+		 */
+		mac_data = er32(DPGFR);
+		mac_data &= ~BIT(2);
+		ew32(DPGFR, mac_data);
+
+		/* Disable the Dynamic Clock Gating in the DMA and MAC */
+		mac_data = er32(CTRL_EXT);
+		mac_data &= 0xFFF7FFFF;
+		ew32(CTRL_EXT, mac_data);
+
+		/* Revert the lanphypc logic to use the internal Gbe counter
+		 * and not the PMC counter
+		 */
+		mac_data = er32(FEXTNVM5);
+		mac_data &= 0xFFFFFF7F;
+		ew32(FEXTNVM5, mac_data);
+
+		/* Enable the periodic inband message,
+		 * Request PCIe clock in K1 page770_17[10:9] =01b
+		 */
+		e1e_rphy(hw, HV_PM_CTRL, &phy_data);
+		phy_data &= 0xFBFF;
+		phy_data |= HV_PM_CTRL_K1_CLK_REQ;
+		e1e_wphy(hw, HV_PM_CTRL, phy_data);
+
+		/* Return back configuration
+		 * 772_29[5] = 0 CS_Mode_Stay_In_K1
+		 */
+		e1e_rphy(hw, I217_CGFREG, &phy_data);
+		phy_data &= 0xFFDF;
+		e1e_wphy(hw, I217_CGFREG, phy_data);
+
+		/* Change the MAC/PHY interface to Kumeran
+		 * Unforce the SMBus in PHY page769_23[0] = 0
+		 * Unforce the SMBus in MAC CTRL_EXT[11] = 0
+		 */
+		e1e_rphy(hw, CV_SMB_CTRL, &phy_data);
+		phy_data &= ~CV_SMB_CTRL_FORCE_SMBUS;
+		e1e_wphy(hw, CV_SMB_CTRL, phy_data);
+		mac_data = er32(CTRL_EXT);
+		mac_data &= ~E1000_CTRL_EXT_FORCE_SMBUS;
+		ew32(CTRL_EXT, mac_data);
+	}
+
+	/* Disable Dynamic Power Gating */
+	mac_data = er32(CTRL_EXT);
+	mac_data &= 0xFFFFFFF7;
+	ew32(CTRL_EXT, mac_data);
+
+	/* Enable the time synchronization clock */
+	mac_data = er32(FEXTNVM7);
+	mac_data &= ~BIT(31);
+	mac_data |= BIT(0);
+	ew32(FEXTNVM7, mac_data);
+}
+
+static int e1000e_pm_freeze(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	bool present;
+
+	rtnl_lock();
+
+	present = netif_device_present(netdev);
+	netif_device_detach(netdev);
+
+	if (present && netif_running(netdev)) {
+		int count = E1000_CHECK_RESET_COUNT;
+
+		while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
+			usleep_range(10000, 11000);
+
+		WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
+
+		/* Quiesce the device without resetting the hardware */
+		e1000e_down(adapter, false);
+		e1000_free_irq(adapter);
+	}
+	rtnl_unlock();
+
+	e1000e_reset_interrupt_capability(adapter);
+
+	/* Allow time for pending master requests to run */
+	e1000e_disable_pcie_master(&adapter->hw);
+
+	return 0;
+}
+
+static int __e1000_shutdown(struct pci_dev *pdev, bool runtime)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 ctrl, ctrl_ext, rctl, status, wufc;
+	int retval = 0;
+
+	/* Runtime suspend should only enable wakeup for link changes */
+	if (runtime)
+		wufc = E1000_WUFC_LNKC;
+	else if (device_may_wakeup(&pdev->dev))
+		wufc = adapter->wol;
+	else
+		wufc = 0;
+
+	status = er32(STATUS);
+	if (status & E1000_STATUS_LU)
+		wufc &= ~E1000_WUFC_LNKC;
+
+	if (wufc) {
+		e1000_setup_rctl(adapter);
+		e1000e_set_rx_mode(netdev);
+
+		/* turn on all-multi mode if wake on multicast is enabled */
+		if (wufc & E1000_WUFC_MC) {
+			rctl = er32(RCTL);
+			rctl |= E1000_RCTL_MPE;
+			ew32(RCTL, rctl);
+		}
+
+		ctrl = er32(CTRL);
+		ctrl |= E1000_CTRL_ADVD3WUC;
+		if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
+			ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
+		ew32(CTRL, ctrl);
+
+		if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
+		    adapter->hw.phy.media_type ==
+		    e1000_media_type_internal_serdes) {
+			/* keep the laser running in D3 */
+			ctrl_ext = er32(CTRL_EXT);
+			ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
+			ew32(CTRL_EXT, ctrl_ext);
+		}
+
+		if (!runtime)
+			e1000e_power_up_phy(adapter);
+
+		if (adapter->flags & FLAG_IS_ICH)
+			e1000_suspend_workarounds_ich8lan(&adapter->hw);
+
+		if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
+			/* enable wakeup by the PHY */
+			retval = e1000_init_phy_wakeup(adapter, wufc);
+			if (retval)
+				return retval;
+		} else {
+			/* enable wakeup by the MAC */
+			ew32(WUFC, wufc);
+			ew32(WUC, E1000_WUC_PME_EN);
+		}
+	} else {
+		ew32(WUC, 0);
+		ew32(WUFC, 0);
+
+		e1000_power_down_phy(adapter);
+	}
+
+	if (adapter->hw.phy.type == e1000_phy_igp_3) {
+		e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
+	} else if (hw->mac.type >= e1000_pch_lpt) {
+		if (wufc && !(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC)))
+			/* ULP does not support wake from unicast, multicast
+			 * or broadcast.
+			 */
+			retval = e1000_enable_ulp_lpt_lp(hw, !runtime);
+
+		if (retval)
+			return retval;
+	}
+
+	/* Ensure that the appropriate bits are set in LPI_CTRL
+	 * for EEE in Sx
+	 */
+	if ((hw->phy.type >= e1000_phy_i217) &&
+	    adapter->eee_advert && hw->dev_spec.ich8lan.eee_lp_ability) {
+		u16 lpi_ctrl = 0;
+
+		retval = hw->phy.ops.acquire(hw);
+		if (!retval) {
+			retval = e1e_rphy_locked(hw, I82579_LPI_CTRL,
+						 &lpi_ctrl);
+			if (!retval) {
+				if (adapter->eee_advert &
+				    hw->dev_spec.ich8lan.eee_lp_ability &
+				    I82579_EEE_100_SUPPORTED)
+					lpi_ctrl |= I82579_LPI_CTRL_100_ENABLE;
+				if (adapter->eee_advert &
+				    hw->dev_spec.ich8lan.eee_lp_ability &
+				    I82579_EEE_1000_SUPPORTED)
+					lpi_ctrl |= I82579_LPI_CTRL_1000_ENABLE;
+
+				retval = e1e_wphy_locked(hw, I82579_LPI_CTRL,
+							 lpi_ctrl);
+			}
+		}
+		hw->phy.ops.release(hw);
+	}
+
+	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
+	 * would have already happened in close and is redundant.
+	 */
+	e1000e_release_hw_control(adapter);
+
+	pci_clear_master(pdev);
+
+	/* The pci-e switch on some quad port adapters will report a
+	 * correctable error when the MAC transitions from D0 to D3.  To
+	 * prevent this we need to mask off the correctable errors on the
+	 * downstream port of the pci-e switch.
+	 *
+	 * We don't have the associated upstream bridge while assigning
+	 * the PCI device into guest. For example, the KVM on power is
+	 * one of the cases.
+	 */
+	if (adapter->flags & FLAG_IS_QUAD_PORT) {
+		struct pci_dev *us_dev = pdev->bus->self;
+		u16 devctl;
+
+		if (!us_dev)
+			return 0;
+
+		pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl);
+		pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL,
+					   (devctl & ~PCI_EXP_DEVCTL_CERE));
+
+		pci_save_state(pdev);
+		pci_prepare_to_sleep(pdev);
+
+		pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl);
+	}
+
+	return 0;
+}
+
+/**
+ * __e1000e_disable_aspm - Disable ASPM states
+ * @pdev: pointer to PCI device struct
+ * @state: bit-mask of ASPM states to disable
+ * @locked: indication if this context holds pci_bus_sem locked.
+ *
+ * Some devices *must* have certain ASPM states disabled per hardware errata.
+ **/
+static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state, int locked)
+{
+	struct pci_dev *parent = pdev->bus->self;
+	u16 aspm_dis_mask = 0;
+	u16 pdev_aspmc, parent_aspmc;
+
+	switch (state) {
+	case PCIE_LINK_STATE_L0S:
+	case PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1:
+		aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L0S;
+		fallthrough; /* can't have L1 without L0s */
+	case PCIE_LINK_STATE_L1:
+		aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L1;
+		break;
+	default:
+		return;
+	}
+
+	pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc);
+	pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC;
+
+	if (parent) {
+		pcie_capability_read_word(parent, PCI_EXP_LNKCTL,
+					  &parent_aspmc);
+		parent_aspmc &= PCI_EXP_LNKCTL_ASPMC;
+	}
+
+	/* Nothing to do if the ASPM states to be disabled already are */
+	if (!(pdev_aspmc & aspm_dis_mask) &&
+	    (!parent || !(parent_aspmc & aspm_dis_mask)))
+		return;
+
+	dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
+		 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L0S) ?
+		 "L0s" : "",
+		 (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L1) ?
+		 "L1" : "");
+
+#ifdef CONFIG_PCIEASPM
+	if (locked)
+		pci_disable_link_state_locked(pdev, state);
+	else
+		pci_disable_link_state(pdev, state);
+
+	/* Double-check ASPM control.  If not disabled by the above, the
+	 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is
+	 * not enabled); override by writing PCI config space directly.
+	 */
+	pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc);
+	pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC;
+
+	if (!(aspm_dis_mask & pdev_aspmc))
+		return;
+#endif
+
+	/* Both device and parent should have the same ASPM setting.
+	 * Disable ASPM in downstream component first and then upstream.
+	 */
+	pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_dis_mask);
+
+	if (parent)
+		pcie_capability_clear_word(parent, PCI_EXP_LNKCTL,
+					   aspm_dis_mask);
+}
+
+/**
+ * e1000e_disable_aspm - Disable ASPM states.
+ * @pdev: pointer to PCI device struct
+ * @state: bit-mask of ASPM states to disable
+ *
+ * This function acquires the pci_bus_sem!
+ * Some devices *must* have certain ASPM states disabled per hardware errata.
+ **/
+static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
+{
+	__e1000e_disable_aspm(pdev, state, 0);
+}
+
+/**
+ * e1000e_disable_aspm_locked - Disable ASPM states.
+ * @pdev: pointer to PCI device struct
+ * @state: bit-mask of ASPM states to disable
+ *
+ * This function must be called with pci_bus_sem acquired!
+ * Some devices *must* have certain ASPM states disabled per hardware errata.
+ **/
+static void e1000e_disable_aspm_locked(struct pci_dev *pdev, u16 state)
+{
+	__e1000e_disable_aspm(pdev, state, 1);
+}
+
+static int e1000e_pm_thaw(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	int rc = 0;
+
+	e1000e_set_interrupt_capability(adapter);
+
+	rtnl_lock();
+	if (netif_running(netdev)) {
+		rc = e1000_request_irq(adapter);
+		if (rc)
+			goto err_irq;
+
+		e1000e_up(adapter);
+	}
+
+	netif_device_attach(netdev);
+err_irq:
+	rtnl_unlock();
+
+	return rc;
+}
+
+static int __e1000_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u16 aspm_disable_flag = 0;
+
+	if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
+		aspm_disable_flag = PCIE_LINK_STATE_L0S;
+	if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
+		aspm_disable_flag |= PCIE_LINK_STATE_L1;
+	if (aspm_disable_flag)
+		e1000e_disable_aspm(pdev, aspm_disable_flag);
+
+	pci_set_master(pdev);
+
+	if (hw->mac.type >= e1000_pch2lan)
+		e1000_resume_workarounds_pchlan(&adapter->hw);
+
+	e1000e_power_up_phy(adapter);
+
+	/* report the system wakeup cause from S3/S4 */
+	if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
+		u16 phy_data;
+
+		e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
+		if (phy_data) {
+			e_info("PHY Wakeup cause - %s\n",
+			       phy_data & E1000_WUS_EX ? "Unicast Packet" :
+			       phy_data & E1000_WUS_MC ? "Multicast Packet" :
+			       phy_data & E1000_WUS_BC ? "Broadcast Packet" :
+			       phy_data & E1000_WUS_MAG ? "Magic Packet" :
+			       phy_data & E1000_WUS_LNKC ?
+			       "Link Status Change" : "other");
+		}
+		e1e_wphy(&adapter->hw, BM_WUS, ~0);
+	} else {
+		u32 wus = er32(WUS);
+
+		if (wus) {
+			e_info("MAC Wakeup cause - %s\n",
+			       wus & E1000_WUS_EX ? "Unicast Packet" :
+			       wus & E1000_WUS_MC ? "Multicast Packet" :
+			       wus & E1000_WUS_BC ? "Broadcast Packet" :
+			       wus & E1000_WUS_MAG ? "Magic Packet" :
+			       wus & E1000_WUS_LNKC ? "Link Status Change" :
+			       "other");
+		}
+		ew32(WUS, ~0);
+	}
+
+	e1000e_reset(adapter);
+
+	e1000_init_manageability_pt(adapter);
+
+	/* If the controller has AMT, do not set DRV_LOAD until the interface
+	 * is up.  For all other cases, let the f/w know that the h/w is now
+	 * under the control of the driver.
+	 */
+	if (!(adapter->flags & FLAG_HAS_AMT))
+		e1000e_get_hw_control(adapter);
+
+	return 0;
+}
+
+static __maybe_unused int e1000e_pm_prepare(struct device *dev)
+{
+	return pm_runtime_suspended(dev) &&
+		pm_suspend_via_firmware();
+}
+
+static __maybe_unused int e1000e_pm_suspend(struct device *dev)
+{
+	struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev));
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int rc;
+
+	e1000e_flush_lpic(pdev);
+
+	e1000e_pm_freeze(dev);
+
+	rc = __e1000_shutdown(pdev, false);
+	if (rc) {
+		e1000e_pm_thaw(dev);
+	} else {
+		/* Introduce S0ix implementation */
+		if (adapter->flags2 & FLAG2_ENABLE_S0IX_FLOWS)
+			e1000e_s0ix_entry_flow(adapter);
+	}
+
+	return rc;
+}
+
+static __maybe_unused int e1000e_pm_resume(struct device *dev)
+{
+	struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev));
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int rc;
+
+	/* Introduce S0ix implementation */
+	if (adapter->flags2 & FLAG2_ENABLE_S0IX_FLOWS)
+		e1000e_s0ix_exit_flow(adapter);
+
+	rc = __e1000_resume(pdev);
+	if (rc)
+		return rc;
+
+	return e1000e_pm_thaw(dev);
+}
+
+static __maybe_unused int e1000e_pm_runtime_idle(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	u16 eee_lp;
+
+	eee_lp = adapter->hw.dev_spec.ich8lan.eee_lp_ability;
+
+	if (!e1000e_has_link(adapter)) {
+		adapter->hw.dev_spec.ich8lan.eee_lp_ability = eee_lp;
+		pm_schedule_suspend(dev, 5 * MSEC_PER_SEC);
+	}
+
+	return -EBUSY;
+}
+
+static __maybe_unused int e1000e_pm_runtime_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	int rc;
+
+	rc = __e1000_resume(pdev);
+	if (rc)
+		return rc;
+
+	if (netdev->flags & IFF_UP)
+		e1000e_up(adapter);
+
+	return rc;
+}
+
+static __maybe_unused int e1000e_pm_runtime_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	if (netdev->flags & IFF_UP) {
+		int count = E1000_CHECK_RESET_COUNT;
+
+		while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
+			usleep_range(10000, 11000);
+
+		WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
+
+		/* Down the device without resetting the hardware */
+		e1000e_down(adapter, false);
+	}
+
+	if (__e1000_shutdown(pdev, true)) {
+		e1000e_pm_runtime_resume(dev);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+static void e1000_shutdown(struct pci_dev *pdev)
+{
+	e1000e_flush_lpic(pdev);
+
+	e1000e_pm_freeze(&pdev->dev);
+
+	__e1000_shutdown(pdev, false);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+
+static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data)
+{
+	struct net_device *netdev = data;
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	if (adapter->msix_entries) {
+		int vector, msix_irq;
+
+		vector = 0;
+		msix_irq = adapter->msix_entries[vector].vector;
+		if (disable_hardirq(msix_irq))
+			e1000_intr_msix_rx(msix_irq, netdev);
+		enable_irq(msix_irq);
+
+		vector++;
+		msix_irq = adapter->msix_entries[vector].vector;
+		if (disable_hardirq(msix_irq))
+			e1000_intr_msix_tx(msix_irq, netdev);
+		enable_irq(msix_irq);
+
+		vector++;
+		msix_irq = adapter->msix_entries[vector].vector;
+		if (disable_hardirq(msix_irq))
+			e1000_msix_other(msix_irq, netdev);
+		enable_irq(msix_irq);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * e1000_netpoll
+ * @netdev: network interface device structure
+ *
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void e1000_netpoll(struct net_device *netdev)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	switch (adapter->int_mode) {
+	case E1000E_INT_MODE_MSIX:
+		e1000_intr_msix(adapter->pdev->irq, netdev);
+		break;
+	case E1000E_INT_MODE_MSI:
+		if (disable_hardirq(adapter->pdev->irq))
+			e1000_intr_msi(adapter->pdev->irq, netdev);
+		enable_irq(adapter->pdev->irq);
+		break;
+	default:		/* E1000E_INT_MODE_LEGACY */
+		if (disable_hardirq(adapter->pdev->irq))
+			e1000_intr(adapter->pdev->irq, netdev);
+		enable_irq(adapter->pdev->irq);
+		break;
+	}
+}
+#endif
+
+/**
+ * e1000_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
+						pci_channel_state_t state)
+{
+	e1000e_pm_freeze(&pdev->dev);
+
+	if (state == pci_channel_io_perm_failure)
+		return PCI_ERS_RESULT_DISCONNECT;
+
+	pci_disable_device(pdev);
+
+	/* Request a slot reset. */
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * e1000_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the e1000e_pm_resume routine.
+ */
+static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u16 aspm_disable_flag = 0;
+	int err;
+	pci_ers_result_t result;
+
+	if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
+		aspm_disable_flag = PCIE_LINK_STATE_L0S;
+	if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
+		aspm_disable_flag |= PCIE_LINK_STATE_L1;
+	if (aspm_disable_flag)
+		e1000e_disable_aspm_locked(pdev, aspm_disable_flag);
+
+	err = pci_enable_device_mem(pdev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"Cannot re-enable PCI device after reset.\n");
+		result = PCI_ERS_RESULT_DISCONNECT;
+	} else {
+		pdev->state_saved = true;
+		pci_restore_state(pdev);
+		pci_set_master(pdev);
+
+		pci_enable_wake(pdev, PCI_D3hot, 0);
+		pci_enable_wake(pdev, PCI_D3cold, 0);
+
+		e1000e_reset(adapter);
+		ew32(WUS, ~0);
+		result = PCI_ERS_RESULT_RECOVERED;
+	}
+
+	return result;
+}
+
+/**
+ * e1000_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the e1000e_pm_resume routine.
+ */
+static void e1000_io_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	e1000_init_manageability_pt(adapter);
+
+	e1000e_pm_thaw(&pdev->dev);
+
+	/* If the controller has AMT, do not set DRV_LOAD until the interface
+	 * is up.  For all other cases, let the f/w know that the h/w is now
+	 * under the control of the driver.
+	 */
+	if (!(adapter->flags & FLAG_HAS_AMT))
+		e1000e_get_hw_control(adapter);
+}
+
+static void e1000_print_device_info(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	u32 ret_val;
+	u8 pba_str[E1000_PBANUM_LENGTH];
+
+	/* print bus type/speed/width info */
+	e_info("(PCI Express:2.5GT/s:%s) %pM\n",
+	       /* bus width */
+	       ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
+		"Width x1"),
+	       /* MAC address */
+	       netdev->dev_addr);
+	e_info("Intel(R) PRO/%s Network Connection\n",
+	       (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
+	ret_val = e1000_read_pba_string_generic(hw, pba_str,
+						E1000_PBANUM_LENGTH);
+	if (ret_val)
+		strscpy((char *)pba_str, "Unknown", sizeof(pba_str));
+	e_info("MAC: %d, PHY: %d, PBA No: %s\n",
+	       hw->mac.type, hw->phy.type, pba_str);
+}
+
+static void e1000_eeprom_checks(struct e1000_adapter *adapter)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	int ret_val;
+	u16 buf = 0;
+
+	if (hw->mac.type != e1000_82573)
+		return;
+
+	ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
+	le16_to_cpus(&buf);
+	if (!ret_val && (!(buf & BIT(0)))) {
+		/* Deep Smart Power Down (DSPD) */
+		dev_warn(&adapter->pdev->dev,
+			 "Warning: detected DSPD enabled in EEPROM\n");
+	}
+}
+
+static netdev_features_t e1000_fix_features(struct net_device *netdev,
+					    netdev_features_t features)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
+	if ((hw->mac.type >= e1000_pch2lan) && (netdev->mtu > ETH_DATA_LEN))
+		features &= ~NETIF_F_RXFCS;
+
+	/* Since there is no support for separate Rx/Tx vlan accel
+	 * enable/disable make sure Tx flag is always in same state as Rx.
+	 */
+	if (features & NETIF_F_HW_VLAN_CTAG_RX)
+		features |= NETIF_F_HW_VLAN_CTAG_TX;
+	else
+		features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+
+	return features;
+}
+
+static int e1000_set_features(struct net_device *netdev,
+			      netdev_features_t features)
+{
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+	netdev_features_t changed = features ^ netdev->features;
+
+	if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
+		adapter->flags |= FLAG_TSO_FORCE;
+
+	if (!(changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX |
+			 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
+			 NETIF_F_RXALL)))
+		return 0;
+
+	if (changed & NETIF_F_RXFCS) {
+		if (features & NETIF_F_RXFCS) {
+			adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
+		} else {
+			/* We need to take it back to defaults, which might mean
+			 * stripping is still disabled at the adapter level.
+			 */
+			if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
+				adapter->flags2 |= FLAG2_CRC_STRIPPING;
+			else
+				adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
+		}
+	}
+
+	netdev->features = features;
+
+	if (netif_running(netdev))
+		e1000e_reinit_locked(adapter);
+	else
+		e1000e_reset(adapter);
+
+	return 1;
+}
+
+static const struct net_device_ops e1000e_netdev_ops = {
+	.ndo_open		= e1000e_open,
+	.ndo_stop		= e1000e_close,
+	.ndo_start_xmit		= e1000_xmit_frame,
+	.ndo_get_stats64	= e1000e_get_stats64,
+	.ndo_set_rx_mode	= e1000e_set_rx_mode,
+	.ndo_set_mac_address	= e1000_set_mac,
+	.ndo_change_mtu		= e1000_change_mtu,
+	.ndo_eth_ioctl		= e1000_ioctl,
+	.ndo_tx_timeout		= e1000_tx_timeout,
+	.ndo_validate_addr	= eth_validate_addr,
+
+	.ndo_vlan_rx_add_vid	= e1000_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid	= e1000_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= e1000_netpoll,
+#endif
+	.ndo_set_features = e1000_set_features,
+	.ndo_fix_features = e1000_fix_features,
+	.ndo_features_check	= passthru_features_check,
+};
+
+/**
+ * e1000_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in e1000_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * e1000_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *netdev;
+	struct e1000_adapter *adapter;
+	struct e1000_hw *hw;
+	const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
+	resource_size_t mmio_start, mmio_len;
+	resource_size_t flash_start, flash_len;
+	static int cards_found;
+	u16 aspm_disable_flag = 0;
+	u16 eeprom_data = 0;
+	u16 eeprom_apme_mask = E1000_EEPROM_APME;
+	int bars, i, err;
+	s32 ret_val = 0;
+
+	if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
+		aspm_disable_flag = PCIE_LINK_STATE_L0S;
+	if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
+		aspm_disable_flag |= PCIE_LINK_STATE_L1;
+	if (aspm_disable_flag)
+		e1000e_disable_aspm(pdev, aspm_disable_flag);
+
+	err = pci_enable_device_mem(pdev);
+	if (err)
+		return err;
+
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (err) {
+		dev_err(&pdev->dev,
+			"No usable DMA configuration, aborting\n");
+		goto err_dma;
+	}
+
+	bars = pci_select_bars(pdev, IORESOURCE_MEM);
+	err = pci_request_selected_regions_exclusive(pdev, bars,
+						     e1000e_driver_name);
+	if (err)
+		goto err_pci_reg;
+
+	/* AER (Advanced Error Reporting) hooks */
+	pci_enable_pcie_error_reporting(pdev);
+
+	pci_set_master(pdev);
+	/* PCI config space info */
+	err = pci_save_state(pdev);
+	if (err)
+		goto err_alloc_etherdev;
+
+	err = -ENOMEM;
+	netdev = alloc_etherdev(sizeof(struct e1000_adapter));
+	if (!netdev)
+		goto err_alloc_etherdev;
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+
+	netdev->irq = pdev->irq;
+
+	pci_set_drvdata(pdev, netdev);
+	adapter = netdev_priv(netdev);
+	hw = &adapter->hw;
+	adapter->netdev = netdev;
+	adapter->pdev = pdev;
+	adapter->ei = ei;
+	adapter->pba = ei->pba;
+	adapter->flags = ei->flags;
+	adapter->flags2 = ei->flags2;
+	adapter->hw.adapter = adapter;
+	adapter->hw.mac.type = ei->mac;
+	adapter->max_hw_frame_size = ei->max_hw_frame_size;
+	adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
+
+	mmio_start = pci_resource_start(pdev, 0);
+	mmio_len = pci_resource_len(pdev, 0);
+
+	err = -EIO;
+	adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
+	if (!adapter->hw.hw_addr)
+		goto err_ioremap;
+
+	if ((adapter->flags & FLAG_HAS_FLASH) &&
+	    (pci_resource_flags(pdev, 1) & IORESOURCE_MEM) &&
+	    (hw->mac.type < e1000_pch_spt)) {
+		flash_start = pci_resource_start(pdev, 1);
+		flash_len = pci_resource_len(pdev, 1);
+		adapter->hw.flash_address = ioremap(flash_start, flash_len);
+		if (!adapter->hw.flash_address)
+			goto err_flashmap;
+	}
+
+	/* Set default EEE advertisement */
+	if (adapter->flags2 & FLAG2_HAS_EEE)
+		adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T;
+
+	/* construct the net_device struct */
+	netdev->netdev_ops = &e1000e_netdev_ops;
+	e1000e_set_ethtool_ops(netdev);
+	netdev->watchdog_timeo = 5 * HZ;
+	netif_napi_add(netdev, &adapter->napi, e1000e_poll);
+	strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
+
+	netdev->mem_start = mmio_start;
+	netdev->mem_end = mmio_start + mmio_len;
+
+	adapter->bd_number = cards_found++;
+
+	e1000e_check_options(adapter);
+
+	/* setup adapter struct */
+	err = e1000_sw_init(adapter);
+	if (err)
+		goto err_sw_init;
+
+	memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
+	memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
+	memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
+
+	err = ei->get_variants(adapter);
+	if (err)
+		goto err_hw_init;
+
+	if ((adapter->flags & FLAG_IS_ICH) &&
+	    (adapter->flags & FLAG_READ_ONLY_NVM) &&
+	    (hw->mac.type < e1000_pch_spt))
+		e1000e_write_protect_nvm_ich8lan(&adapter->hw);
+
+	hw->mac.ops.get_bus_info(&adapter->hw);
+
+	adapter->hw.phy.autoneg_wait_to_complete = 0;
+
+	/* Copper options */
+	if (adapter->hw.phy.media_type == e1000_media_type_copper) {
+		adapter->hw.phy.mdix = AUTO_ALL_MODES;
+		adapter->hw.phy.disable_polarity_correction = 0;
+		adapter->hw.phy.ms_type = e1000_ms_hw_default;
+	}
+
+	if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw))
+		dev_info(&pdev->dev,
+			 "PHY reset is blocked due to SOL/IDER session.\n");
+
+	/* Set initial default active device features */
+	netdev->features = (NETIF_F_SG |
+			    NETIF_F_HW_VLAN_CTAG_RX |
+			    NETIF_F_HW_VLAN_CTAG_TX |
+			    NETIF_F_TSO |
+			    NETIF_F_TSO6 |
+			    NETIF_F_RXHASH |
+			    NETIF_F_RXCSUM |
+			    NETIF_F_HW_CSUM);
+
+	/* disable TSO for pcie and 10/100 speeds to avoid
+	 * some hardware issues and for i219 to fix transfer
+	 * speed being capped at 60%
+	 */
+	if (!(adapter->flags & FLAG_TSO_FORCE)) {
+		switch (adapter->link_speed) {
+		case SPEED_10:
+		case SPEED_100:
+			e_info("10/100 speed: disabling TSO\n");
+			netdev->features &= ~NETIF_F_TSO;
+			netdev->features &= ~NETIF_F_TSO6;
+			break;
+		case SPEED_1000:
+			netdev->features |= NETIF_F_TSO;
+			netdev->features |= NETIF_F_TSO6;
+			break;
+		default:
+			/* oops */
+			break;
+		}
+		if (hw->mac.type == e1000_pch_spt) {
+			netdev->features &= ~NETIF_F_TSO;
+			netdev->features &= ~NETIF_F_TSO6;
+		}
+	}
+
+	/* Set user-changeable features (subset of all device features) */
+	netdev->hw_features = netdev->features;
+	netdev->hw_features |= NETIF_F_RXFCS;
+	netdev->priv_flags |= IFF_SUPP_NOFCS;
+	netdev->hw_features |= NETIF_F_RXALL;
+
+	if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
+		netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
+	netdev->vlan_features |= (NETIF_F_SG |
+				  NETIF_F_TSO |
+				  NETIF_F_TSO6 |
+				  NETIF_F_HW_CSUM);
+
+	netdev->priv_flags |= IFF_UNICAST_FLT;
+
+	netdev->features |= NETIF_F_HIGHDMA;
+	netdev->vlan_features |= NETIF_F_HIGHDMA;
+
+	/* MTU range: 68 - max_hw_frame_size */
+	netdev->min_mtu = ETH_MIN_MTU;
+	netdev->max_mtu = adapter->max_hw_frame_size -
+			  (VLAN_ETH_HLEN + ETH_FCS_LEN);
+
+	if (e1000e_enable_mng_pass_thru(&adapter->hw))
+		adapter->flags |= FLAG_MNG_PT_ENABLED;
+
+	/* before reading the NVM, reset the controller to
+	 * put the device in a known good starting state
+	 */
+	adapter->hw.mac.ops.reset_hw(&adapter->hw);
+
+	/* systems with ASPM and others may see the checksum fail on the first
+	 * attempt. Let's give it a few tries
+	 */
+	for (i = 0;; i++) {
+		if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
+			break;
+		if (i == 2) {
+			dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
+			err = -EIO;
+			goto err_eeprom;
+		}
+	}
+
+	e1000_eeprom_checks(adapter);
+
+	/* copy the MAC address */
+	if (e1000e_read_mac_addr(&adapter->hw))
+		dev_err(&pdev->dev,
+			"NVM Read Error while reading MAC address\n");
+
+	eth_hw_addr_set(netdev, adapter->hw.mac.addr);
+
+	if (!is_valid_ether_addr(netdev->dev_addr)) {
+		dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
+			netdev->dev_addr);
+		err = -EIO;
+		goto err_eeprom;
+	}
+
+	timer_setup(&adapter->watchdog_timer, e1000_watchdog, 0);
+	timer_setup(&adapter->phy_info_timer, e1000_update_phy_info, 0);
+
+	INIT_WORK(&adapter->reset_task, e1000_reset_task);
+	INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
+	INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
+	INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
+	INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
+
+	/* Initialize link parameters. User can change them with ethtool */
+	adapter->hw.mac.autoneg = 1;
+	adapter->fc_autoneg = true;
+	adapter->hw.fc.requested_mode = e1000_fc_default;
+	adapter->hw.fc.current_mode = e1000_fc_default;
+	adapter->hw.phy.autoneg_advertised = 0x2f;
+
+	/* Initial Wake on LAN setting - If APM wake is enabled in
+	 * the EEPROM, enable the ACPI Magic Packet filter
+	 */
+	if (adapter->flags & FLAG_APME_IN_WUC) {
+		/* APME bit in EEPROM is mapped to WUC.APME */
+		eeprom_data = er32(WUC);
+		eeprom_apme_mask = E1000_WUC_APME;
+		if ((hw->mac.type > e1000_ich10lan) &&
+		    (eeprom_data & E1000_WUC_PHY_WAKE))
+			adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
+	} else if (adapter->flags & FLAG_APME_IN_CTRL3) {
+		if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
+		    (adapter->hw.bus.func == 1))
+			ret_val = e1000_read_nvm(&adapter->hw,
+					      NVM_INIT_CONTROL3_PORT_B,
+					      1, &eeprom_data);
+		else
+			ret_val = e1000_read_nvm(&adapter->hw,
+					      NVM_INIT_CONTROL3_PORT_A,
+					      1, &eeprom_data);
+	}
+
+	/* fetch WoL from EEPROM */
+	if (ret_val)
+		e_dbg("NVM read error getting WoL initial values: %d\n", ret_val);
+	else if (eeprom_data & eeprom_apme_mask)
+		adapter->eeprom_wol |= E1000_WUFC_MAG;
+
+	/* now that we have the eeprom settings, apply the special cases
+	 * where the eeprom may be wrong or the board simply won't support
+	 * wake on lan on a particular port
+	 */
+	if (!(adapter->flags & FLAG_HAS_WOL))
+		adapter->eeprom_wol = 0;
+
+	/* initialize the wol settings based on the eeprom settings */
+	adapter->wol = adapter->eeprom_wol;
+
+	/* make sure adapter isn't asleep if manageability is enabled */
+	if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) ||
+	    (hw->mac.ops.check_mng_mode(hw)))
+		device_wakeup_enable(&pdev->dev);
+
+	/* save off EEPROM version number */
+	ret_val = e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
+
+	if (ret_val) {
+		e_dbg("NVM read error getting EEPROM version: %d\n", ret_val);
+		adapter->eeprom_vers = 0;
+	}
+
+	/* init PTP hardware clock */
+	e1000e_ptp_init(adapter);
+
+	/* reset the hardware with the new settings */
+	e1000e_reset(adapter);
+
+	/* If the controller has AMT, do not set DRV_LOAD until the interface
+	 * is up.  For all other cases, let the f/w know that the h/w is now
+	 * under the control of the driver.
+	 */
+	if (!(adapter->flags & FLAG_HAS_AMT))
+		e1000e_get_hw_control(adapter);
+
+	if (hw->mac.type >= e1000_pch_cnp)
+		adapter->flags2 |= FLAG2_ENABLE_S0IX_FLOWS;
+
+	strscpy(netdev->name, "eth%d", sizeof(netdev->name));
+	err = register_netdev(netdev);
+	if (err)
+		goto err_register;
+
+	/* carrier off reporting is important to ethtool even BEFORE open */
+	netif_carrier_off(netdev);
+
+	e1000_print_device_info(adapter);
+
+	dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_SMART_PREPARE);
+
+	if (pci_dev_run_wake(pdev) && hw->mac.type != e1000_pch_cnp)
+		pm_runtime_put_noidle(&pdev->dev);
+
+	return 0;
+
+err_register:
+	if (!(adapter->flags & FLAG_HAS_AMT))
+		e1000e_release_hw_control(adapter);
+err_eeprom:
+	if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw))
+		e1000_phy_hw_reset(&adapter->hw);
+err_hw_init:
+	kfree(adapter->tx_ring);
+	kfree(adapter->rx_ring);
+err_sw_init:
+	if ((adapter->hw.flash_address) && (hw->mac.type < e1000_pch_spt))
+		iounmap(adapter->hw.flash_address);
+	e1000e_reset_interrupt_capability(adapter);
+err_flashmap:
+	iounmap(adapter->hw.hw_addr);
+err_ioremap:
+	free_netdev(netdev);
+err_alloc_etherdev:
+	pci_disable_pcie_error_reporting(pdev);
+	pci_release_mem_regions(pdev);
+err_pci_reg:
+err_dma:
+	pci_disable_device(pdev);
+	return err;
+}
+
+/**
+ * e1000_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * e1000_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device.  This could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void e1000_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct e1000_adapter *adapter = netdev_priv(netdev);
+
+	e1000e_ptp_remove(adapter);
+
+	/* The timers may be rescheduled, so explicitly disable them
+	 * from being rescheduled.
+	 */
+	set_bit(__E1000_DOWN, &adapter->state);
+	del_timer_sync(&adapter->watchdog_timer);
+	del_timer_sync(&adapter->phy_info_timer);
+
+	cancel_work_sync(&adapter->reset_task);
+	cancel_work_sync(&adapter->watchdog_task);
+	cancel_work_sync(&adapter->downshift_task);
+	cancel_work_sync(&adapter->update_phy_task);
+	cancel_work_sync(&adapter->print_hang_task);
+
+	if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) {
+		cancel_work_sync(&adapter->tx_hwtstamp_work);
+		if (adapter->tx_hwtstamp_skb) {
+			dev_consume_skb_any(adapter->tx_hwtstamp_skb);
+			adapter->tx_hwtstamp_skb = NULL;
+		}
+	}
+
+	unregister_netdev(netdev);
+
+	if (pci_dev_run_wake(pdev))
+		pm_runtime_get_noresume(&pdev->dev);
+
+	/* Release control of h/w to f/w.  If f/w is AMT enabled, this
+	 * would have already happened in close and is redundant.
+	 */
+	e1000e_release_hw_control(adapter);
+
+	e1000e_reset_interrupt_capability(adapter);
+	kfree(adapter->tx_ring);
+	kfree(adapter->rx_ring);
+
+	iounmap(adapter->hw.hw_addr);
+	if ((adapter->hw.flash_address) &&
+	    (adapter->hw.mac.type < e1000_pch_spt))
+		iounmap(adapter->hw.flash_address);
+	pci_release_mem_regions(pdev);
+
+	free_netdev(netdev);
+
+	/* AER disable */
+	pci_disable_pcie_error_reporting(pdev);
+
+	pci_disable_device(pdev);
+}
+
+/* PCI Error Recovery (ERS) */
+static const struct pci_error_handlers e1000_err_handler = {
+	.error_detected = e1000_io_error_detected,
+	.slot_reset = e1000_io_slot_reset,
+	.resume = e1000_io_resume,
+};
+
+static const struct pci_device_id e1000_pci_tbl[] = {
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP),
+	  board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
+	  board_80003es2lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
+	  board_80003es2lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
+	  board_80003es2lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
+	  board_80003es2lan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
+
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM2), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V2), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM3), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V3), board_pch_lpt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_LM), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_V), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_LM2), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_V2), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LBG_I219_LM3), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_LM4), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_V4), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_LM5), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_V5), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CNP_I219_LM6), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CNP_I219_V6), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CNP_I219_LM7), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CNP_I219_V7), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ICP_I219_LM8), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ICP_I219_V8), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ICP_I219_LM9), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ICP_I219_V9), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CMP_I219_LM10), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CMP_I219_V10), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CMP_I219_LM11), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CMP_I219_V11), board_pch_cnp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CMP_I219_LM12), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_CMP_I219_V12), board_pch_spt },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_TGP_I219_LM13), board_pch_tgp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_TGP_I219_V13), board_pch_tgp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_TGP_I219_LM14), board_pch_tgp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_TGP_I219_V14), board_pch_tgp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_TGP_I219_LM15), board_pch_tgp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_TGP_I219_V15), board_pch_tgp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_RPL_I219_LM23), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_RPL_I219_V23), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ADP_I219_LM16), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ADP_I219_V16), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ADP_I219_LM17), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_ADP_I219_V17), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_RPL_I219_LM22), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_RPL_I219_V22), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_MTP_I219_LM18), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_MTP_I219_V18), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_MTP_I219_LM19), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_MTP_I219_V19), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LNP_I219_LM20), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LNP_I219_V20), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LNP_I219_LM21), board_pch_adp },
+	{ PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LNP_I219_V21), board_pch_adp },
+
+	{ 0, 0, 0, 0, 0, 0, 0 }	/* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
+
+static const struct dev_pm_ops e1000_pm_ops = {
+#ifdef CONFIG_PM_SLEEP
+	.prepare	= e1000e_pm_prepare,
+	.suspend	= e1000e_pm_suspend,
+	.resume		= e1000e_pm_resume,
+	.freeze		= e1000e_pm_freeze,
+	.thaw		= e1000e_pm_thaw,
+	.poweroff	= e1000e_pm_suspend,
+	.restore	= e1000e_pm_resume,
+#endif
+	SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend, e1000e_pm_runtime_resume,
+			   e1000e_pm_runtime_idle)
+};
+
+/* PCI Device API Driver */
+static struct pci_driver e1000_driver = {
+	.name     = e1000e_driver_name,
+	.id_table = e1000_pci_tbl,
+	.probe    = e1000_probe,
+	.remove   = e1000_remove,
+	.driver   = {
+		.pm = &e1000_pm_ops,
+	},
+	.shutdown = e1000_shutdown,
+	.err_handler = &e1000_err_handler
+};
+
+/**
+ * e1000_init_module - Driver Registration Routine
+ *
+ * e1000_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init e1000_init_module(void)
+{
+	pr_info("Intel(R) PRO/1000 Network Driver\n");
+	pr_info("Copyright(c) 1999 - 2015 Intel Corporation.\n");
+
+	return pci_register_driver(&e1000_driver);
+}
+module_init(e1000_init_module);
+
+/**
+ * e1000_exit_module - Driver Exit Cleanup Routine
+ *
+ * e1000_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit e1000_exit_module(void)
+{
+	pci_unregister_driver(&e1000_driver);
+}
+module_exit(e1000_exit_module);
+
+MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
+MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
+MODULE_LICENSE("GPL v2");
+
+/* netdev.c */