igb: PCI-Express 82575 Gigabit Ethernet driver

We are pleased to announce a new Gigabit Ethernet product and its
driver to the linux community. This product is the Intel(R) 82575
Gigabit Ethernet adapter family. Physical adapters will be available
to the public soon. These adapters come in 2- and 4-port versions
(copper PHY) currently. Other variants will be available later.

The 82575 chipset supports significantly different features that
warrant a new driver. The descriptor format is (just like the
ixgbe driver) different. The device can use multiple MSI-X vectors
and multiple queues for both send and receive. This allows us to
optimize some of the driver code specifically as well compared to
the e1000-supported devices.

This version of the igb driver no lnger uses fake netdevices and
incorporates napi_struct members for each ring to do the multi-
queue polling. multi-queue is enabled by default and the driver
supports NAPI mode only.

All the namespace collisions should be gone in this version too. The
register macro's have been condensed to improve readability.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1927 insertions, 0 deletions

diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c
new file mode 100644
index 00000000000..f69721e4eaa
--- /dev/null
+++ b/drivers/net/igb/igb_ethtool.c
@@ -0,0 +1,1927 @@
+/*******************************************************************************
+
+  Intel(R) Gigabit Ethernet Linux driver
+  Copyright(c) 2007 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* ethtool support for igb */
+
+#include <linux/vmalloc.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+#include <linux/ethtool.h>
+
+#include "igb.h"
+
+struct igb_stats {
+	char stat_string[ETH_GSTRING_LEN];
+	int sizeof_stat;
+	int stat_offset;
+};
+
+#define IGB_STAT(m) sizeof(((struct igb_adapter *)0)->m), \
+		      offsetof(struct igb_adapter, m)
+static const struct igb_stats igb_gstrings_stats[] = {
+	{ "rx_packets", IGB_STAT(stats.gprc) },
+	{ "tx_packets", IGB_STAT(stats.gptc) },
+	{ "rx_bytes", IGB_STAT(stats.gorc) },
+	{ "tx_bytes", IGB_STAT(stats.gotc) },
+	{ "rx_broadcast", IGB_STAT(stats.bprc) },
+	{ "tx_broadcast", IGB_STAT(stats.bptc) },
+	{ "rx_multicast", IGB_STAT(stats.mprc) },
+	{ "tx_multicast", IGB_STAT(stats.mptc) },
+	{ "rx_errors", IGB_STAT(net_stats.rx_errors) },
+	{ "tx_errors", IGB_STAT(net_stats.tx_errors) },
+	{ "tx_dropped", IGB_STAT(net_stats.tx_dropped) },
+	{ "multicast", IGB_STAT(stats.mprc) },
+	{ "collisions", IGB_STAT(stats.colc) },
+	{ "rx_length_errors", IGB_STAT(net_stats.rx_length_errors) },
+	{ "rx_over_errors", IGB_STAT(net_stats.rx_over_errors) },
+	{ "rx_crc_errors", IGB_STAT(stats.crcerrs) },
+	{ "rx_frame_errors", IGB_STAT(net_stats.rx_frame_errors) },
+	{ "rx_no_buffer_count", IGB_STAT(stats.rnbc) },
+	{ "rx_missed_errors", IGB_STAT(stats.mpc) },
+	{ "tx_aborted_errors", IGB_STAT(stats.ecol) },
+	{ "tx_carrier_errors", IGB_STAT(stats.tncrs) },
+	{ "tx_fifo_errors", IGB_STAT(net_stats.tx_fifo_errors) },
+	{ "tx_heartbeat_errors", IGB_STAT(net_stats.tx_heartbeat_errors) },
+	{ "tx_window_errors", IGB_STAT(stats.latecol) },
+	{ "tx_abort_late_coll", IGB_STAT(stats.latecol) },
+	{ "tx_deferred_ok", IGB_STAT(stats.dc) },
+	{ "tx_single_coll_ok", IGB_STAT(stats.scc) },
+	{ "tx_multi_coll_ok", IGB_STAT(stats.mcc) },
+	{ "tx_timeout_count", IGB_STAT(tx_timeout_count) },
+	{ "tx_restart_queue", IGB_STAT(restart_queue) },
+	{ "rx_long_length_errors", IGB_STAT(stats.roc) },
+	{ "rx_short_length_errors", IGB_STAT(stats.ruc) },
+	{ "rx_align_errors", IGB_STAT(stats.algnerrc) },
+	{ "tx_tcp_seg_good", IGB_STAT(stats.tsctc) },
+	{ "tx_tcp_seg_failed", IGB_STAT(stats.tsctfc) },
+	{ "rx_flow_control_xon", IGB_STAT(stats.xonrxc) },
+	{ "rx_flow_control_xoff", IGB_STAT(stats.xoffrxc) },
+	{ "tx_flow_control_xon", IGB_STAT(stats.xontxc) },
+	{ "tx_flow_control_xoff", IGB_STAT(stats.xofftxc) },
+	{ "rx_long_byte_count", IGB_STAT(stats.gorc) },
+	{ "rx_csum_offload_good", IGB_STAT(hw_csum_good) },
+	{ "rx_csum_offload_errors", IGB_STAT(hw_csum_err) },
+	{ "rx_header_split", IGB_STAT(rx_hdr_split) },
+	{ "alloc_rx_buff_failed", IGB_STAT(alloc_rx_buff_failed) },
+	{ "tx_smbus", IGB_STAT(stats.mgptc) },
+	{ "rx_smbus", IGB_STAT(stats.mgprc) },
+	{ "dropped_smbus", IGB_STAT(stats.mgpdc) },
+};
+
+#define IGB_QUEUE_STATS_LEN \
+	((((((struct igb_adapter *)netdev->priv)->num_rx_queues > 1) ? \
+	  ((struct igb_adapter *)netdev->priv)->num_rx_queues : 0) + \
+	 (((((struct igb_adapter *)netdev->priv)->num_tx_queues > 1) ? \
+	  ((struct igb_adapter *)netdev->priv)->num_tx_queues : 0))) * \
+	(sizeof(struct igb_queue_stats) / sizeof(u64)))
+#define IGB_GLOBAL_STATS_LEN	\
+	sizeof(igb_gstrings_stats) / sizeof(struct igb_stats)
+#define IGB_STATS_LEN (IGB_GLOBAL_STATS_LEN + IGB_QUEUE_STATS_LEN)
+static const char igb_gstrings_test[][ETH_GSTRING_LEN] = {
+	"Register test  (offline)", "Eeprom test    (offline)",
+	"Interrupt test (offline)", "Loopback test  (offline)",
+	"Link test   (on/offline)"
+};
+#define IGB_TEST_LEN sizeof(igb_gstrings_test) / ETH_GSTRING_LEN
+
+static int igb_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if (hw->phy.media_type == e1000_media_type_copper) {
+
+		ecmd->supported = (SUPPORTED_10baseT_Half |
+				   SUPPORTED_10baseT_Full |
+				   SUPPORTED_100baseT_Half |
+				   SUPPORTED_100baseT_Full |
+				   SUPPORTED_1000baseT_Full|
+				   SUPPORTED_Autoneg |
+				   SUPPORTED_TP);
+		ecmd->advertising = ADVERTISED_TP;
+
+		if (hw->mac.autoneg == 1) {
+			ecmd->advertising |= ADVERTISED_Autoneg;
+			/* the e1000 autoneg seems to match ethtool nicely */
+			ecmd->advertising |= hw->phy.autoneg_advertised;
+		}
+
+		ecmd->port = PORT_TP;
+		ecmd->phy_address = hw->phy.addr;
+	} else {
+		ecmd->supported   = (SUPPORTED_1000baseT_Full |
+				     SUPPORTED_FIBRE |
+				     SUPPORTED_Autoneg);
+
+		ecmd->advertising = (ADVERTISED_1000baseT_Full |
+				     ADVERTISED_FIBRE |
+				     ADVERTISED_Autoneg);
+
+		ecmd->port = PORT_FIBRE;
+	}
+
+	ecmd->transceiver = XCVR_INTERNAL;
+
+	if (rd32(E1000_STATUS) & E1000_STATUS_LU) {
+
+		adapter->hw.mac.ops.get_speed_and_duplex(hw,
+					&adapter->link_speed,
+					&adapter->link_duplex);
+		ecmd->speed = adapter->link_speed;
+
+		/* unfortunately FULL_DUPLEX != DUPLEX_FULL
+		 *          and HALF_DUPLEX != DUPLEX_HALF */
+
+		if (adapter->link_duplex == FULL_DUPLEX)
+			ecmd->duplex = DUPLEX_FULL;
+		else
+			ecmd->duplex = DUPLEX_HALF;
+	} else {
+		ecmd->speed = -1;
+		ecmd->duplex = -1;
+	}
+
+	ecmd->autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||
+			 hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
+	return 0;
+}
+
+static int igb_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	/* When SoL/IDER sessions are active, autoneg/speed/duplex
+	 * cannot be changed */
+	if (igb_check_reset_block(hw)) {
+		dev_err(&adapter->pdev->dev, "Cannot change link "
+			"characteristics when SoL/IDER is active.\n");
+		return -EINVAL;
+	}
+
+	while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
+		msleep(1);
+
+	if (ecmd->autoneg == AUTONEG_ENABLE) {
+		hw->mac.autoneg = 1;
+		if (hw->phy.media_type == e1000_media_type_fiber)
+			hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |
+						     ADVERTISED_FIBRE |
+						     ADVERTISED_Autoneg;
+		else
+			hw->phy.autoneg_advertised = ecmd->advertising |
+						     ADVERTISED_TP |
+						     ADVERTISED_Autoneg;
+		ecmd->advertising = hw->phy.autoneg_advertised;
+	} else
+		if (igb_set_spd_dplx(adapter, ecmd->speed + ecmd->duplex)) {
+			clear_bit(__IGB_RESETTING, &adapter->state);
+			return -EINVAL;
+		}
+
+	/* reset the link */
+
+	if (netif_running(adapter->netdev)) {
+		igb_down(adapter);
+		igb_up(adapter);
+	} else
+		igb_reset(adapter);
+
+	clear_bit(__IGB_RESETTING, &adapter->state);
+	return 0;
+}
+
+static void igb_get_pauseparam(struct net_device *netdev,
+			       struct ethtool_pauseparam *pause)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	pause->autoneg =
+		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
+
+	if (hw->fc.type == e1000_fc_rx_pause)
+		pause->rx_pause = 1;
+	else if (hw->fc.type == e1000_fc_tx_pause)
+		pause->tx_pause = 1;
+	else if (hw->fc.type == e1000_fc_full) {
+		pause->rx_pause = 1;
+		pause->tx_pause = 1;
+	}
+}
+
+static int igb_set_pauseparam(struct net_device *netdev,
+			      struct ethtool_pauseparam *pause)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	int retval = 0;
+
+	adapter->fc_autoneg = pause->autoneg;
+
+	while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
+		msleep(1);
+
+	if (pause->rx_pause && pause->tx_pause)
+		hw->fc.type = e1000_fc_full;
+	else if (pause->rx_pause && !pause->tx_pause)
+		hw->fc.type = e1000_fc_rx_pause;
+	else if (!pause->rx_pause && pause->tx_pause)
+		hw->fc.type = e1000_fc_tx_pause;
+	else if (!pause->rx_pause && !pause->tx_pause)
+		hw->fc.type = e1000_fc_none;
+
+	hw->fc.original_type = hw->fc.type;
+
+	if (adapter->fc_autoneg == AUTONEG_ENABLE) {
+		if (netif_running(adapter->netdev)) {
+			igb_down(adapter);
+			igb_up(adapter);
+		} else
+			igb_reset(adapter);
+	} else
+		retval = ((hw->phy.media_type == e1000_media_type_fiber) ?
+			  igb_setup_link(hw) : igb_force_mac_fc(hw));
+
+	clear_bit(__IGB_RESETTING, &adapter->state);
+	return retval;
+}
+
+static u32 igb_get_rx_csum(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	return adapter->rx_csum;
+}
+
+static int igb_set_rx_csum(struct net_device *netdev, u32 data)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	adapter->rx_csum = data;
+
+	return 0;
+}
+
+static u32 igb_get_tx_csum(struct net_device *netdev)
+{
+	return (netdev->features & NETIF_F_HW_CSUM) != 0;
+}
+
+static int igb_set_tx_csum(struct net_device *netdev, u32 data)
+{
+	if (data)
+		netdev->features |= NETIF_F_HW_CSUM;
+	else
+		netdev->features &= ~NETIF_F_HW_CSUM;
+
+	return 0;
+}
+
+static int igb_set_tso(struct net_device *netdev, u32 data)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	if (data)
+		netdev->features |= NETIF_F_TSO;
+	else
+		netdev->features &= ~NETIF_F_TSO;
+
+	if (data)
+		netdev->features |= NETIF_F_TSO6;
+	else
+		netdev->features &= ~NETIF_F_TSO6;
+
+	dev_info(&adapter->pdev->dev, "TSO is %s\n",
+		 data ? "Enabled" : "Disabled");
+	return 0;
+}
+
+static u32 igb_get_msglevel(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	return adapter->msg_enable;
+}
+
+static void igb_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	adapter->msg_enable = data;
+}
+
+static int igb_get_regs_len(struct net_device *netdev)
+{
+#define IGB_REGS_LEN 551
+	return IGB_REGS_LEN * sizeof(u32);
+}
+
+static void igb_get_regs(struct net_device *netdev,
+			 struct ethtool_regs *regs, void *p)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 *regs_buff = p;
+	u8 i;
+
+	memset(p, 0, IGB_REGS_LEN * sizeof(u32));
+
+	regs->version = (1 << 24) | (hw->revision_id << 16) | hw->device_id;
+
+	/* General Registers */
+	regs_buff[0] = rd32(E1000_CTRL);
+	regs_buff[1] = rd32(E1000_STATUS);
+	regs_buff[2] = rd32(E1000_CTRL_EXT);
+	regs_buff[3] = rd32(E1000_MDIC);
+	regs_buff[4] = rd32(E1000_SCTL);
+	regs_buff[5] = rd32(E1000_CONNSW);
+	regs_buff[6] = rd32(E1000_VET);
+	regs_buff[7] = rd32(E1000_LEDCTL);
+	regs_buff[8] = rd32(E1000_PBA);
+	regs_buff[9] = rd32(E1000_PBS);
+	regs_buff[10] = rd32(E1000_FRTIMER);
+	regs_buff[11] = rd32(E1000_TCPTIMER);
+
+	/* NVM Register */
+	regs_buff[12] = rd32(E1000_EECD);
+
+	/* Interrupt */
+	regs_buff[13] = rd32(E1000_EICR);
+	regs_buff[14] = rd32(E1000_EICS);
+	regs_buff[15] = rd32(E1000_EIMS);
+	regs_buff[16] = rd32(E1000_EIMC);
+	regs_buff[17] = rd32(E1000_EIAC);
+	regs_buff[18] = rd32(E1000_EIAM);
+	regs_buff[19] = rd32(E1000_ICR);
+	regs_buff[20] = rd32(E1000_ICS);
+	regs_buff[21] = rd32(E1000_IMS);
+	regs_buff[22] = rd32(E1000_IMC);
+	regs_buff[23] = rd32(E1000_IAC);
+	regs_buff[24] = rd32(E1000_IAM);
+	regs_buff[25] = rd32(E1000_IMIRVP);
+
+	/* Flow Control */
+	regs_buff[26] = rd32(E1000_FCAL);
+	regs_buff[27] = rd32(E1000_FCAH);
+	regs_buff[28] = rd32(E1000_FCTTV);
+	regs_buff[29] = rd32(E1000_FCRTL);
+	regs_buff[30] = rd32(E1000_FCRTH);
+	regs_buff[31] = rd32(E1000_FCRTV);
+
+	/* Receive */
+	regs_buff[32] = rd32(E1000_RCTL);
+	regs_buff[33] = rd32(E1000_RXCSUM);
+	regs_buff[34] = rd32(E1000_RLPML);
+	regs_buff[35] = rd32(E1000_RFCTL);
+	regs_buff[36] = rd32(E1000_MRQC);
+	regs_buff[37] = rd32(E1000_VMD_CTL);
+
+	/* Transmit */
+	regs_buff[38] = rd32(E1000_TCTL);
+	regs_buff[39] = rd32(E1000_TCTL_EXT);
+	regs_buff[40] = rd32(E1000_TIPG);
+	regs_buff[41] = rd32(E1000_DTXCTL);
+
+	/* Wake Up */
+	regs_buff[42] = rd32(E1000_WUC);
+	regs_buff[43] = rd32(E1000_WUFC);
+	regs_buff[44] = rd32(E1000_WUS);
+	regs_buff[45] = rd32(E1000_IPAV);
+	regs_buff[46] = rd32(E1000_WUPL);
+
+	/* MAC */
+	regs_buff[47] = rd32(E1000_PCS_CFG0);
+	regs_buff[48] = rd32(E1000_PCS_LCTL);
+	regs_buff[49] = rd32(E1000_PCS_LSTAT);
+	regs_buff[50] = rd32(E1000_PCS_ANADV);
+	regs_buff[51] = rd32(E1000_PCS_LPAB);
+	regs_buff[52] = rd32(E1000_PCS_NPTX);
+	regs_buff[53] = rd32(E1000_PCS_LPABNP);
+
+	/* Statistics */
+	regs_buff[54] = adapter->stats.crcerrs;
+	regs_buff[55] = adapter->stats.algnerrc;
+	regs_buff[56] = adapter->stats.symerrs;
+	regs_buff[57] = adapter->stats.rxerrc;
+	regs_buff[58] = adapter->stats.mpc;
+	regs_buff[59] = adapter->stats.scc;
+	regs_buff[60] = adapter->stats.ecol;
+	regs_buff[61] = adapter->stats.mcc;
+	regs_buff[62] = adapter->stats.latecol;
+	regs_buff[63] = adapter->stats.colc;
+	regs_buff[64] = adapter->stats.dc;
+	regs_buff[65] = adapter->stats.tncrs;
+	regs_buff[66] = adapter->stats.sec;
+	regs_buff[67] = adapter->stats.htdpmc;
+	regs_buff[68] = adapter->stats.rlec;
+	regs_buff[69] = adapter->stats.xonrxc;
+	regs_buff[70] = adapter->stats.xontxc;
+	regs_buff[71] = adapter->stats.xoffrxc;
+	regs_buff[72] = adapter->stats.xofftxc;
+	regs_buff[73] = adapter->stats.fcruc;
+	regs_buff[74] = adapter->stats.prc64;
+	regs_buff[75] = adapter->stats.prc127;
+	regs_buff[76] = adapter->stats.prc255;
+	regs_buff[77] = adapter->stats.prc511;
+	regs_buff[78] = adapter->stats.prc1023;
+	regs_buff[79] = adapter->stats.prc1522;
+	regs_buff[80] = adapter->stats.gprc;
+	regs_buff[81] = adapter->stats.bprc;
+	regs_buff[82] = adapter->stats.mprc;
+	regs_buff[83] = adapter->stats.gptc;
+	regs_buff[84] = adapter->stats.gorc;
+	regs_buff[86] = adapter->stats.gotc;
+	regs_buff[88] = adapter->stats.rnbc;
+	regs_buff[89] = adapter->stats.ruc;
+	regs_buff[90] = adapter->stats.rfc;
+	regs_buff[91] = adapter->stats.roc;
+	regs_buff[92] = adapter->stats.rjc;
+	regs_buff[93] = adapter->stats.mgprc;
+	regs_buff[94] = adapter->stats.mgpdc;
+	regs_buff[95] = adapter->stats.mgptc;
+	regs_buff[96] = adapter->stats.tor;
+	regs_buff[98] = adapter->stats.tot;
+	regs_buff[100] = adapter->stats.tpr;
+	regs_buff[101] = adapter->stats.tpt;
+	regs_buff[102] = adapter->stats.ptc64;
+	regs_buff[103] = adapter->stats.ptc127;
+	regs_buff[104] = adapter->stats.ptc255;
+	regs_buff[105] = adapter->stats.ptc511;
+	regs_buff[106] = adapter->stats.ptc1023;
+	regs_buff[107] = adapter->stats.ptc1522;
+	regs_buff[108] = adapter->stats.mptc;
+	regs_buff[109] = adapter->stats.bptc;
+	regs_buff[110] = adapter->stats.tsctc;
+	regs_buff[111] = adapter->stats.iac;
+	regs_buff[112] = adapter->stats.rpthc;
+	regs_buff[113] = adapter->stats.hgptc;
+	regs_buff[114] = adapter->stats.hgorc;
+	regs_buff[116] = adapter->stats.hgotc;
+	regs_buff[118] = adapter->stats.lenerrs;
+	regs_buff[119] = adapter->stats.scvpc;
+	regs_buff[120] = adapter->stats.hrmpc;
+
+	/* These should probably be added to e1000_regs.h instead */
+	#define E1000_PSRTYPE_REG(_i) (0x05480 + ((_i) * 4))
+	#define E1000_RAL(_i)         (0x05400 + ((_i) * 8))
+	#define E1000_RAH(_i)         (0x05404 + ((_i) * 8))
+	#define E1000_IP4AT_REG(_i)   (0x05840 + ((_i) * 8))
+	#define E1000_IP6AT_REG(_i)   (0x05880 + ((_i) * 4))
+	#define E1000_WUPM_REG(_i)    (0x05A00 + ((_i) * 4))
+	#define E1000_FFMT_REG(_i)    (0x09000 + ((_i) * 8))
+	#define E1000_FFVT_REG(_i)    (0x09800 + ((_i) * 8))
+	#define E1000_FFLT_REG(_i)    (0x05F00 + ((_i) * 8))
+
+	for (i = 0; i < 4; i++)
+		regs_buff[121 + i] = rd32(E1000_SRRCTL(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[125 + i] = rd32(E1000_PSRTYPE_REG(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[129 + i] = rd32(E1000_RDBAL(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[133 + i] = rd32(E1000_RDBAH(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[137 + i] = rd32(E1000_RDLEN(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[141 + i] = rd32(E1000_RDH(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[145 + i] = rd32(E1000_RDT(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[149 + i] = rd32(E1000_RXDCTL(i));
+
+	for (i = 0; i < 10; i++)
+		regs_buff[153 + i] = rd32(E1000_EITR(i));
+	for (i = 0; i < 8; i++)
+		regs_buff[163 + i] = rd32(E1000_IMIR(i));
+	for (i = 0; i < 8; i++)
+		regs_buff[171 + i] = rd32(E1000_IMIREXT(i));
+	for (i = 0; i < 16; i++)
+		regs_buff[179 + i] = rd32(E1000_RAL(i));
+	for (i = 0; i < 16; i++)
+		regs_buff[195 + i] = rd32(E1000_RAH(i));
+
+	for (i = 0; i < 4; i++)
+		regs_buff[211 + i] = rd32(E1000_TDBAL(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[215 + i] = rd32(E1000_TDBAH(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[219 + i] = rd32(E1000_TDLEN(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[223 + i] = rd32(E1000_TDH(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[227 + i] = rd32(E1000_TDT(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[231 + i] = rd32(E1000_TXDCTL(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[235 + i] = rd32(E1000_TDWBAL(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[239 + i] = rd32(E1000_TDWBAH(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[243 + i] = rd32(E1000_DCA_TXCTRL(i));
+
+	for (i = 0; i < 4; i++)
+		regs_buff[247 + i] = rd32(E1000_IP4AT_REG(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[251 + i] = rd32(E1000_IP6AT_REG(i));
+	for (i = 0; i < 32; i++)
+		regs_buff[255 + i] = rd32(E1000_WUPM_REG(i));
+	for (i = 0; i < 128; i++)
+		regs_buff[287 + i] = rd32(E1000_FFMT_REG(i));
+	for (i = 0; i < 128; i++)
+		regs_buff[415 + i] = rd32(E1000_FFVT_REG(i));
+	for (i = 0; i < 4; i++)
+		regs_buff[543 + i] = rd32(E1000_FFLT_REG(i));
+
+	regs_buff[547] = rd32(E1000_TDFH);
+	regs_buff[548] = rd32(E1000_TDFT);
+	regs_buff[549] = rd32(E1000_TDFHS);
+	regs_buff[550] = rd32(E1000_TDFPC);
+
+}
+
+static int igb_get_eeprom_len(struct net_device *netdev)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	return adapter->hw.nvm.word_size * 2;
+}
+
+static int igb_get_eeprom(struct net_device *netdev,
+			  struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u16 *eeprom_buff;
+	int first_word, last_word;
+	int ret_val = 0;
+	u16 i;
+
+	if (eeprom->len == 0)
+		return -EINVAL;
+
+	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
+
+	first_word = eeprom->offset >> 1;
+	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
+
+	eeprom_buff = kmalloc(sizeof(u16) *
+			(last_word - first_word + 1), GFP_KERNEL);
+	if (!eeprom_buff)
+		return -ENOMEM;
+
+	if (hw->nvm.type == e1000_nvm_eeprom_spi)
+		ret_val = hw->nvm.ops.read_nvm(hw, first_word,
+					    last_word - first_word + 1,
+					    eeprom_buff);
+	else {
+		for (i = 0; i < last_word - first_word + 1; i++) {
+			ret_val = hw->nvm.ops.read_nvm(hw, first_word + i, 1,
+						    &eeprom_buff[i]);
+			if (ret_val)
+				break;
+		}
+	}
+
+	/* Device's eeprom is always little-endian, word addressable */
+	for (i = 0; i < last_word - first_word + 1; i++)
+		le16_to_cpus(&eeprom_buff[i]);
+
+	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1),
+			eeprom->len);
+	kfree(eeprom_buff);
+
+	return ret_val;
+}
+
+static int igb_set_eeprom(struct net_device *netdev,
+			  struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u16 *eeprom_buff;
+	void *ptr;
+	int max_len, first_word, last_word, ret_val = 0;
+	u16 i;
+
+	if (eeprom->len == 0)
+		return -EOPNOTSUPP;
+
+	if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
+		return -EFAULT;
+
+	max_len = hw->nvm.word_size * 2;
+
+	first_word = eeprom->offset >> 1;
+	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
+	eeprom_buff = kmalloc(max_len, GFP_KERNEL);
+	if (!eeprom_buff)
+		return -ENOMEM;
+
+	ptr = (void *)eeprom_buff;
+
+	if (eeprom->offset & 1) {
+		/* need read/modify/write of first changed EEPROM word */
+		/* only the second byte of the word is being modified */
+		ret_val = hw->nvm.ops.read_nvm(hw, first_word, 1,
+					    &eeprom_buff[0]);
+		ptr++;
+	}
+	if (((eeprom->offset + eeprom->len) & 1) && (ret_val == 0)) {
+		/* need read/modify/write of last changed EEPROM word */
+		/* only the first byte of the word is being modified */
+		ret_val = hw->nvm.ops.read_nvm(hw, last_word, 1,
+				   &eeprom_buff[last_word - first_word]);
+	}
+
+	/* Device's eeprom is always little-endian, word addressable */
+	for (i = 0; i < last_word - first_word + 1; i++)
+		le16_to_cpus(&eeprom_buff[i]);
+
+	memcpy(ptr, bytes, eeprom->len);
+
+	for (i = 0; i < last_word - first_word + 1; i++)
+		eeprom_buff[i] = cpu_to_le16(eeprom_buff[i]);
+
+	ret_val = hw->nvm.ops.write_nvm(hw, first_word,
+				     last_word - first_word + 1, eeprom_buff);
+
+	/* Update the checksum over the first part of the EEPROM if needed
+	 * and flush shadow RAM for 82573 controllers */
+	if ((ret_val == 0) && ((first_word <= NVM_CHECKSUM_REG)))
+		igb_update_nvm_checksum(hw);
+
+	kfree(eeprom_buff);
+	return ret_val;
+}
+
+static void igb_get_drvinfo(struct net_device *netdev,
+			    struct ethtool_drvinfo *drvinfo)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	char firmware_version[32];
+	u16 eeprom_data;
+
+	strncpy(drvinfo->driver,  igb_driver_name, 32);
+	strncpy(drvinfo->version, igb_driver_version, 32);
+
+	/* EEPROM image version # is reported as firmware version # for
+	 * 82575 controllers */
+	adapter->hw.nvm.ops.read_nvm(&adapter->hw, 5, 1, &eeprom_data);
+	sprintf(firmware_version, "%d.%d-%d",
+		(eeprom_data & 0xF000) >> 12,
+		(eeprom_data & 0x0FF0) >> 4,
+		eeprom_data & 0x000F);
+
+	strncpy(drvinfo->fw_version, firmware_version, 32);
+	strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
+	drvinfo->n_stats = IGB_STATS_LEN;
+	drvinfo->testinfo_len = IGB_TEST_LEN;
+	drvinfo->regdump_len = igb_get_regs_len(netdev);
+	drvinfo->eedump_len = igb_get_eeprom_len(netdev);
+}
+
+static void igb_get_ringparam(struct net_device *netdev,
+			      struct ethtool_ringparam *ring)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct igb_ring *tx_ring = adapter->tx_ring;
+	struct igb_ring *rx_ring = adapter->rx_ring;
+
+	ring->rx_max_pending = IGB_MAX_RXD;
+	ring->tx_max_pending = IGB_MAX_TXD;
+	ring->rx_mini_max_pending = 0;
+	ring->rx_jumbo_max_pending = 0;
+	ring->rx_pending = rx_ring->count;
+	ring->tx_pending = tx_ring->count;
+	ring->rx_mini_pending = 0;
+	ring->rx_jumbo_pending = 0;
+}
+
+static int igb_set_ringparam(struct net_device *netdev,
+			     struct ethtool_ringparam *ring)
+{
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct igb_buffer *old_buf;
+	struct igb_buffer *old_rx_buf;
+	void *old_desc;
+	int i, err;
+	u32 new_rx_count, new_tx_count, old_size;
+	dma_addr_t old_dma;
+
+	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
+		return -EINVAL;
+
+	new_rx_count = max(ring->rx_pending, (u32)IGB_MIN_RXD);
+	new_rx_count = min(new_rx_count, (u32)IGB_MAX_RXD);
+	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
+
+	new_tx_count = max(ring->tx_pending, (u32)IGB_MIN_TXD);
+	new_tx_count = min(new_tx_count, (u32)IGB_MAX_TXD);
+	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
+
+	if ((new_tx_count == adapter->tx_ring->count) &&
+	    (new_rx_count == adapter->rx_ring->count)) {
+		/* nothing to do */
+		return 0;
+	}
+
+	while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
+		msleep(1);
+
+	if (netif_running(adapter->netdev))
+		igb_down(adapter);
+
+	/*
+	 * We can't just free everything and then setup again,
+	 * because the ISRs in MSI-X mode get passed pointers
+	 * to the tx and rx ring structs.
+	 */
+	if (new_tx_count != adapter->tx_ring->count) {
+		for (i = 0; i < adapter->num_tx_queues; i++) {
+			/* Save existing descriptor ring */
+			old_buf = adapter->tx_ring[i].buffer_info;
+			old_desc = adapter->tx_ring[i].desc;
+			old_size = adapter->tx_ring[i].size;
+			old_dma = adapter->tx_ring[i].dma;
+			/* Try to allocate a new one */
+			adapter->tx_ring[i].buffer_info = NULL;
+			adapter->tx_ring[i].desc = NULL;
+			adapter->tx_ring[i].count = new_tx_count;
+			err = igb_setup_tx_resources(adapter,
+						&adapter->tx_ring[i]);
+			if (err) {
+				/* Restore the old one so at least
+				   the adapter still works, even if
+				   we failed the request */
+				adapter->tx_ring[i].buffer_info = old_buf;
+				adapter->tx_ring[i].desc = old_desc;
+				adapter->tx_ring[i].size = old_size;
+				adapter->tx_ring[i].dma = old_dma;
+				goto err_setup;
+			}
+			/* Free the old buffer manually */
+			vfree(old_buf);
+			pci_free_consistent(adapter->pdev, old_size,
+					    old_desc, old_dma);
+		}
+	}
+
+	if (new_rx_count != adapter->rx_ring->count) {
+		for (i = 0; i < adapter->num_rx_queues; i++) {
+
+			old_rx_buf = adapter->rx_ring[i].buffer_info;
+			old_desc = adapter->rx_ring[i].desc;
+			old_size = adapter->rx_ring[i].size;
+			old_dma = adapter->rx_ring[i].dma;
+
+			adapter->rx_ring[i].buffer_info = NULL;
+			adapter->rx_ring[i].desc = NULL;
+			adapter->rx_ring[i].dma = 0;
+			adapter->rx_ring[i].count = new_rx_count;
+			err = igb_setup_rx_resources(adapter,
+						     &adapter->rx_ring[i]);
+			if (err) {
+				adapter->rx_ring[i].buffer_info = old_rx_buf;
+				adapter->rx_ring[i].desc = old_desc;
+				adapter->rx_ring[i].size = old_size;
+				adapter->rx_ring[i].dma = old_dma;
+				goto err_setup;
+			}
+
+			vfree(old_rx_buf);
+			pci_free_consistent(adapter->pdev, old_size, old_desc,
+					    old_dma);
+		}
+	}
+
+	err = 0;
+err_setup:
+	if (netif_running(adapter->netdev))
+		igb_up(adapter);
+
+	clear_bit(__IGB_RESETTING, &adapter->state);
+	return err;
+}
+
+/* ethtool register test data */
+struct igb_reg_test {
+	u16 reg;
+	u8  array_len;
+	u8  test_type;
+	u32 mask;
+	u32 write;
+};
+
+/* In the hardware, registers are laid out either singly, in arrays
+ * spaced 0x100 bytes apart, or in contiguous tables.  We assume
+ * most tests take place on arrays or single registers (handled
+ * as a single-element array) and special-case the tables.
+ * Table tests are always pattern tests.
+ *
+ * We also make provision for some required setup steps by specifying
+ * registers to be written without any read-back testing.
+ */
+
+#define PATTERN_TEST	1
+#define SET_READ_TEST	2
+#define WRITE_NO_TEST	3
+#define TABLE32_TEST	4
+#define TABLE64_TEST_LO	5
+#define TABLE64_TEST_HI	6
+
+/* default register test */
+static struct igb_reg_test reg_test_82575[] = {
+	{ E1000_FCAL, 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
+	{ E1000_FCAH, 1, PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
+	{ E1000_FCT, 1, PATTERN_TEST, 0x0000FFFF, 0xFFFFFFFF },
+	{ E1000_VET, 1, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
+	{ E1000_RDBAL(0), 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
+	{ E1000_RDBAH(0), 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
+	{ E1000_RDLEN(0), 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
+	/* Enable all four RX queues before testing. */
+	{ E1000_RXDCTL(0), 4, WRITE_NO_TEST, 0, E1000_RXDCTL_QUEUE_ENABLE },
+	/* RDH is read-only for 82575, only test RDT. */
+	{ E1000_RDT(0), 4, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
+	{ E1000_RXDCTL(0), 4, WRITE_NO_TEST, 0, 0 },
+	{ E1000_FCRTH, 1, PATTERN_TEST, 0x0000FFF0, 0x0000FFF0 },
+	{ E1000_FCTTV, 1, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
+	{ E1000_TIPG, 1, PATTERN_TEST, 0x3FFFFFFF, 0x3FFFFFFF },
+	{ E1000_TDBAL(0), 4, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
+	{ E1000_TDBAH(0), 4, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
+	{ E1000_TDLEN(0), 4, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
+	{ E1000_RCTL, 1, SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
+	{ E1000_RCTL, 1, SET_READ_TEST, 0x04CFB3FE, 0x003FFFFB },
+	{ E1000_RCTL, 1, SET_READ_TEST, 0x04CFB3FE, 0xFFFFFFFF },
+	{ E1000_TCTL, 1, SET_READ_TEST, 0xFFFFFFFF, 0x00000000 },
+	{ E1000_TXCW, 1, PATTERN_TEST, 0xC000FFFF, 0x0000FFFF },
+	{ E1000_RA, 16, TABLE64_TEST_LO, 0xFFFFFFFF, 0xFFFFFFFF },
+	{ E1000_RA, 16, TABLE64_TEST_HI, 0x800FFFFF, 0xFFFFFFFF },
+	{ E1000_MTA, 128, TABLE32_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
+	{ 0, 0, 0, 0 }
+};
+
+static bool reg_pattern_test(struct igb_adapter *adapter, u64 *data,
+			     int reg, u32 mask, u32 write)
+{
+	u32 pat, val;
+	u32 _test[] =
+		{0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF};
+	for (pat = 0; pat < ARRAY_SIZE(_test); pat++) {
+		writel((_test[pat] & write), (adapter->hw.hw_addr + reg));
+		val = readl(adapter->hw.hw_addr + reg);
+		if (val != (_test[pat] & write & mask)) {
+			dev_err(&adapter->pdev->dev, "pattern test reg %04X "
+				"failed: got 0x%08X expected 0x%08X\n",
+				reg, val, (_test[pat] & write & mask));
+			*data = reg;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+static bool reg_set_and_check(struct igb_adapter *adapter, u64 *data,
+			      int reg, u32 mask, u32 write)
+{
+	u32 val;
+	writel((write & mask), (adapter->hw.hw_addr + reg));
+	val = readl(adapter->hw.hw_addr + reg);
+	if ((write & mask) != (val & mask)) {
+		dev_err(&adapter->pdev->dev, "set/check reg %04X test failed:"
+			" got 0x%08X expected 0x%08X\n", reg,
+			(val & mask), (write & mask));
+		*data = reg;
+		return 1;
+	}
+	return 0;
+}
+
+#define REG_PATTERN_TEST(reg, mask, write) \
+	do { \
+		if (reg_pattern_test(adapter, data, reg, mask, write)) \
+			return 1; \
+	} while (0)
+
+#define REG_SET_AND_CHECK(reg, mask, write) \
+	do { \
+		if (reg_set_and_check(adapter, data, reg, mask, write)) \
+			return 1; \
+	} while (0)
+
+static int igb_reg_test(struct igb_adapter *adapter, u64 *data)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	struct igb_reg_test *test;
+	u32 value, before, after;
+	u32 i, toggle;
+
+	toggle = 0x7FFFF3FF;
+	test = reg_test_82575;
+
+	/* Because the status register is such a special case,
+	 * we handle it separately from the rest of the register
+	 * tests.  Some bits are read-only, some toggle, and some
+	 * are writable on newer MACs.
+	 */
+	before = rd32(E1000_STATUS);
+	value = (rd32(E1000_STATUS) & toggle);
+	wr32(E1000_STATUS, toggle);
+	after = rd32(E1000_STATUS) & toggle;
+	if (value != after) {
+		dev_err(&adapter->pdev->dev, "failed STATUS register test "
+			"got: 0x%08X expected: 0x%08X\n", after, value);
+		*data = 1;
+		return 1;
+	}
+	/* restore previous status */
+	wr32(E1000_STATUS, before);
+
+	/* Perform the remainder of the register test, looping through
+	 * the test table until we either fail or reach the null entry.
+	 */
+	while (test->reg) {
+		for (i = 0; i < test->array_len; i++) {
+			switch (test->test_type) {
+			case PATTERN_TEST:
+				REG_PATTERN_TEST(test->reg + (i * 0x100),
+						test->mask,
+						test->write);
+				break;
+			case SET_READ_TEST:
+				REG_SET_AND_CHECK(test->reg + (i * 0x100),
+						test->mask,
+						test->write);
+				break;
+			case WRITE_NO_TEST:
+				writel(test->write,
+				    (adapter->hw.hw_addr + test->reg)
+					+ (i * 0x100));
+				break;
+			case TABLE32_TEST:
+				REG_PATTERN_TEST(test->reg + (i * 4),
+						test->mask,
+						test->write);
+				break;
+			case TABLE64_TEST_LO:
+				REG_PATTERN_TEST(test->reg + (i * 8),
+						test->mask,
+						test->write);
+				break;
+			case TABLE64_TEST_HI:
+				REG_PATTERN_TEST((test->reg + 4) + (i * 8),
+						test->mask,
+						test->write);
+				break;
+			}
+		}
+		test++;
+	}
+
+	*data = 0;
+	return 0;
+}
+
+static int igb_eeprom_test(struct igb_adapter *adapter, u64 *data)
+{
+	u16 temp;
+	u16 checksum = 0;
+	u16 i;
+
+	*data = 0;
+	/* Read and add up the contents of the EEPROM */
+	for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
+		if ((adapter->hw.nvm.ops.read_nvm(&adapter->hw, i, 1, &temp))
+		    < 0) {
+			*data = 1;
+			break;
+		}
+		checksum += temp;
+	}
+
+	/* If Checksum is not Correct return error else test passed */
+	if ((checksum != (u16) NVM_SUM) && !(*data))
+		*data = 2;
+
+	return *data;
+}
+
+static irqreturn_t igb_test_intr(int irq, void *data)
+{
+	struct net_device *netdev = (struct net_device *) data;
+	struct igb_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	adapter->test_icr |= rd32(E1000_ICR);
+
+	return IRQ_HANDLED;
+}
+