/*
 * QLogic qlcnic NIC Driver
 * Copyright (c)  2009-2010 QLogic Corporation
 *
 * See LICENSE.qlcnic for copyright and licensing details.
 */

#include <linux/types.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/io.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>

#include "qlcnic.h"

struct qlcnic_stats {
	char stat_string[ETH_GSTRING_LEN];
	int sizeof_stat;
	int stat_offset;
};

#define QLC_SIZEOF(m) FIELD_SIZEOF(struct qlcnic_adapter, m)
#define QLC_OFF(m) offsetof(struct qlcnic_adapter, m)

static const struct qlcnic_stats qlcnic_gstrings_stats[] = {
	{"xmit_called",
		QLC_SIZEOF(stats.xmitcalled), QLC_OFF(stats.xmitcalled)},
	{"xmit_finished",
		QLC_SIZEOF(stats.xmitfinished), QLC_OFF(stats.xmitfinished)},
	{"rx_dropped",
		QLC_SIZEOF(stats.rxdropped), QLC_OFF(stats.rxdropped)},
	{"tx_dropped",
		QLC_SIZEOF(stats.txdropped), QLC_OFF(stats.txdropped)},
	{"csummed",
		QLC_SIZEOF(stats.csummed), QLC_OFF(stats.csummed)},
	{"rx_pkts",
		QLC_SIZEOF(stats.rx_pkts), QLC_OFF(stats.rx_pkts)},
	{"lro_pkts",
		QLC_SIZEOF(stats.lro_pkts), QLC_OFF(stats.lro_pkts)},
	{"rx_bytes",
		QLC_SIZEOF(stats.rxbytes), QLC_OFF(stats.rxbytes)},
	{"tx_bytes",
		QLC_SIZEOF(stats.txbytes), QLC_OFF(stats.txbytes)},
	{"lrobytes",
		QLC_SIZEOF(stats.lrobytes), QLC_OFF(stats.lrobytes)},
	{"lso_frames",
		QLC_SIZEOF(stats.lso_frames), QLC_OFF(stats.lso_frames)},
	{"xmit_on",
		QLC_SIZEOF(stats.xmit_on), QLC_OFF(stats.xmit_on)},
	{"xmit_off",
		QLC_SIZEOF(stats.xmit_off), QLC_OFF(stats.xmit_off)},
	{"skb_alloc_failure", QLC_SIZEOF(stats.skb_alloc_failure),
		QLC_OFF(stats.skb_alloc_failure)},
	{"null rxbuf",
		QLC_SIZEOF(stats.null_rxbuf), QLC_OFF(stats.null_rxbuf)},
	{"rx dma map error", QLC_SIZEOF(stats.rx_dma_map_error),
					 QLC_OFF(stats.rx_dma_map_error)},
	{"tx dma map error", QLC_SIZEOF(stats.tx_dma_map_error),
					 QLC_OFF(stats.tx_dma_map_error)},

};

static const char qlcnic_device_gstrings_stats[][ETH_GSTRING_LEN] = {
	"rx unicast frames",
	"rx multicast frames",
	"rx broadcast frames",
	"rx dropped frames",
	"rx errors",
	"rx local frames",
	"rx numbytes",
	"tx unicast frames",
	"tx multicast frames",
	"tx broadcast frames",
	"tx dropped frames",
	"tx errors",
	"tx local frames",
	"tx numbytes",
};

#define QLCNIC_STATS_LEN	ARRAY_SIZE(qlcnic_gstrings_stats)
#define QLCNIC_DEVICE_STATS_LEN	ARRAY_SIZE(qlcnic_device_gstrings_stats)

static const char qlcnic_gstrings_test[][ETH_GSTRING_LEN] = {
	"Register_Test_on_offline",
	"Link_Test_on_offline",
	"Interrupt_Test_offline",
	"Internal_Loopback_offline",
	"External_Loopback_offline"
};

#define QLCNIC_TEST_LEN	ARRAY_SIZE(qlcnic_gstrings_test)

#define QLCNIC_RING_REGS_COUNT	20
#define QLCNIC_RING_REGS_LEN	(QLCNIC_RING_REGS_COUNT * sizeof(u32))
#define QLCNIC_MAX_EEPROM_LEN   1024

static const u32 diag_registers[] = {
	CRB_CMDPEG_STATE,
	CRB_RCVPEG_STATE,
	CRB_XG_STATE_P3P,
	CRB_FW_CAPABILITIES_1,
	ISR_INT_STATE_REG,
	QLCNIC_CRB_DRV_ACTIVE,
	QLCNIC_CRB_DEV_STATE,
	QLCNIC_CRB_DRV_STATE,
	QLCNIC_CRB_DRV_SCRATCH,
	QLCNIC_CRB_DEV_PARTITION_INFO,
	QLCNIC_CRB_DRV_IDC_VER,
	QLCNIC_PEG_ALIVE_COUNTER,
	QLCNIC_PEG_HALT_STATUS1,
	QLCNIC_PEG_HALT_STATUS2,
	QLCNIC_CRB_PEG_NET_0+0x3c,
	QLCNIC_CRB_PEG_NET_1+0x3c,
	QLCNIC_CRB_PEG_NET_2+0x3c,
	QLCNIC_CRB_PEG_NET_4+0x3c,
	-1
};

#define QLCNIC_MGMT_API_VERSION	2
#define QLCNIC_DEV_INFO_SIZE	1
#define QLCNIC_ETHTOOL_REGS_VER	2
static int qlcnic_get_regs_len(struct net_device *dev)
{
	return sizeof(diag_registers) + QLCNIC_RING_REGS_LEN +
				QLCNIC_DEV_INFO_SIZE + 1;
}

static int qlcnic_get_eeprom_len(struct net_device *dev)
{
	return QLCNIC_FLASH_TOTAL_SIZE;
}

static void
qlcnic_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	u32 fw_major, fw_minor, fw_build;

	fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
	fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
	fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
		"%d.%d.%d", fw_major, fw_minor, fw_build);

	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
		sizeof(drvinfo->bus_info));
	strlcpy(drvinfo->driver, qlcnic_driver_name, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, QLCNIC_LINUX_VERSIONID,
		sizeof(drvinfo->version));
}

static int
qlcnic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	int check_sfp_module = 0;

	/* read which mode */
	if (adapter->ahw->port_type == QLCNIC_GBE) {
		ecmd->supported = (SUPPORTED_10baseT_Half |
				   SUPPORTED_10baseT_Full |
				   SUPPORTED_100baseT_Half |
				   SUPPORTED_100baseT_Full |
				   SUPPORTED_1000baseT_Half |
				   SUPPORTED_1000baseT_Full);

		ecmd->advertising = (ADVERTISED_100baseT_Half |
				     ADVERTISED_100baseT_Full |
				     ADVERTISED_1000baseT_Half |
				     ADVERTISED_1000baseT_Full);

		ethtool_cmd_speed_set(ecmd, adapter->link_speed);
		ecmd->duplex = adapter->link_duplex;
		ecmd->autoneg = adapter->link_autoneg;

	} else if (adapter->ahw->port_type == QLCNIC_XGBE) {
		u32 val;

		val = QLCRD32(adapter, QLCNIC_PORT_MODE_ADDR);
		if (val == QLCNIC_PORT_MODE_802_3_AP) {
			ecmd->supported = SUPPORTED_1000baseT_Full;
			ecmd->advertising = ADVERTISED_1000baseT_Full;
		} else {
			ecmd->supported = SUPPORTED_10000baseT_Full;
			ecmd->advertising = ADVERTISED_10000baseT_Full;
		}

		if (netif_running(dev) && adapter->has_link_events) {
			ethtool_cmd_speed_set(ecmd, adapter->link_speed);
			ecmd->autoneg = adapter->link_autoneg;
			ecmd->duplex = adapter->link_duplex;
			goto skip;
		}

		ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
		ecmd->duplex = DUPLEX_UNKNOWN;
		ecmd->autoneg = AUTONEG_DISABLE;
	} else
		return -EIO;

skip:
	ecmd->phy_address = adapter->physical_port;
	ecmd->transceiver = XCVR_EXTERNAL;

	switch (adapter->ahw->board_type) {
	case QLCNIC_BRDTYPE_P3P_REF_QG:
	case QLCNIC_BRDTYPE_P3P_4_GB:
	case QLCNIC_BRDTYPE_P3P_4_GB_MM:

		ecmd->supported |= SUPPORTED_Autoneg;
		ecmd->advertising |= ADVERTISED_Autoneg;
	case QLCNIC_BRDTYPE_P3P_10G_CX4:
	case QLCNIC_BRDTYPE_P3P_10G_CX4_LP:
	case QLCNIC_BRDTYPE_P3P_10000_BASE_T:
		ecmd->supported |= SUPPORTED_TP;
		ecmd->advertising |= ADVERTISED_TP;
		ecmd->port = PORT_TP;
		ecmd->autoneg =  adapter->link_autoneg;
		break;
	case QLCNIC_BRDTYPE_P3P_IMEZ:
	case QLCNIC_BRDTYPE_P3P_XG_LOM:
	case QLCNIC_BRDTYPE_P3P_HMEZ:
		ecmd->supported |= SUPPORTED_MII;
		ecmd->advertising |= ADVERTISED_MII;
		ecmd->port = PORT_MII;
		ecmd->autoneg = AUTONEG_DISABLE;
		break;
	case QLCNIC_BRDTYPE_P3P_10G_SFP_PLUS:
	case QLCNIC_BRDTYPE_P3P_10G_SFP_CT:
	case QLCNIC_BRDTYPE_P3P_10G_SFP_QT:
		ecmd->advertising |= ADVERTISED_TP;
		ecmd->supported |= SUPPORTED_TP;
		check_sfp_module = netif_running(dev) &&
			adapter->has_link_events;
	case QLCNIC_BRDTYPE_P3P_10G_XFP:
		ecmd->supported |= SUPPORTED_FIBRE;
		ecmd->advertising |= ADVERTISED_FIBRE;
		ecmd->port = PORT_FIBRE;
		ecmd->autoneg = AUTONEG_DISABLE;
		break;
	case QLCNIC_BRDTYPE_P3P_10G_TP:
		if (adapter->ahw->port_type == QLCNIC_XGBE) {
			ecmd->autoneg = AUTONEG_DISABLE;
			ecmd->supported |= (SUPPORTED_FIBRE | SUPPORTED_TP);
			ecmd->advertising |=
				(ADVERTISED_FIBRE | ADVERTISED_TP);
			ecmd->port = PORT_FIBRE;
			check_sfp_module = netif_running(dev) &&
				adapter->has_link_events;
		} else {
			ecmd->autoneg = AUTONEG_ENABLE;
			ecmd->supported |= (SUPPORTED_TP | SUPPORTED_Autoneg);
			ecmd->advertising |=
				(ADVERTISED_TP | ADVERTISED_Autoneg);
			ecmd->port = PORT_TP;
		}
		break;
	default:
		dev_err(&adapter->pdev->dev, "Unsupported board model %d\n",
			adapter->ahw->board_type);
		return -EIO;
	}

	if (check_sfp_module) {
		switch (adapter->module_type) {
		case LINKEVENT_MODULE_OPTICAL_UNKNOWN:
		case LINKEVENT_MODULE_OPTICAL_SRLR:
		case LINKEVENT_MODULE_OPTICAL_LRM:
		case LINKEVENT_MODULE_OPTICAL_SFP_1G:
			ecmd->port = PORT_FIBRE;
			break;
		case LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE:
		case LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN:
		case LINKEVENT_MODULE_TWINAX:
			ecmd->port = PORT_TP;
			break;
		default:
			ecmd->port = PORT_OTHER;
		}
	}

	return 0;
}

static int
qlcnic_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
	u32 config = 0;
	u32 ret = 0;
	struct qlcnic_adapter *adapter = netdev_priv(dev);

	if (adapter->ahw->port_type != QLCNIC_GBE)
		return -EOPNOTSUPP;

	/* read which mode */
	if (ecmd->duplex)
		config |= 0x1;

	if (ecmd->autoneg)
		config |= 0x2;

	switch (ethtool_cmd_speed(ecmd)) {
	case SPEED_10:
		config |= (0 << 8);
		break;
	case SPEED_100:
		config |= (1 << 8);
		break;
	case SPEED_1000:
		config |= (10 << 8);
		break;
	default:
		return -EIO;
	}

	ret = qlcnic_fw_cmd_set_port(adapter, config);

	if (ret == QLCNIC_RCODE_NOT_SUPPORTED)
		return -EOPNOTSUPP;
	else if (ret)
		return -EIO;

	adapter->link_speed = ethtool_cmd_speed(ecmd);
	adapter->link_duplex = ecmd->duplex;
	adapter->link_autoneg = ecmd->autoneg;

	if (!netif_running(dev))
		return 0;

	dev->netdev_ops->ndo_stop(dev);
	return dev->netdev_ops->ndo_open(dev);
}

static void
qlcnic_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
	struct qlcnic_host_sds_ring *sds_ring;
	u32 *regs_buff = p;
	int ring, i = 0, j = 0;

	memset(p, 0, qlcnic_get_regs_len(dev));
	regs->version = (QLCNIC_ETHTOOL_REGS_VER << 24) |
		(adapter->ahw->revision_id << 16) | (adapter->pdev)->device;

	regs_buff[0] = (0xcafe0000 | (QLCNIC_DEV_INFO_SIZE & 0xffff));
	regs_buff[1] = QLCNIC_MGMT_API_VERSION;

	for (i = QLCNIC_DEV_INFO_SIZE + 1; diag_registers[j] != -1; j++, i++)
		regs_buff[i] = QLCRD32(adapter, diag_registers[j]);

	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
		return;

	regs_buff[i++] = 0xFFEFCDAB; /* Marker btw regs and ring count*/

	regs_buff[i++] = 1; /* No. of tx ring */
	regs_buff[i++] = le32_to_cpu(*(adapter->tx_ring->hw_consumer));
	regs_buff[i++] = readl(adapter->tx_ring->crb_cmd_producer);

	regs_buff[i++] = 2; /* No. of rx ring */
	regs_buff[i++] = readl(recv_ctx->rds_rings[0].crb_rcv_producer);
	regs_buff[i++] = readl(recv_ctx->rds_rings[1].crb_rcv_producer);

	regs_buff[i++] = adapter->max_sds_rings;

	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
		sds_ring = &(recv_ctx->sds_rings[ring]);
		regs_buff[i++] = readl(sds_ring->crb_sts_consumer);
	}
}

static u32 qlcnic_test_link(struct net_device *dev)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	u32 val;

	val = QLCRD32(adapter, CRB_XG_STATE_P3P);
	val = XG_LINK_STATE_P3P(adapter->ahw->pci_func, val);
	return (val == XG_LINK_UP_P3P) ? 0 : 1;
}

static int
qlcnic_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
		      u8 *bytes)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	int offset;
	int ret;

	if (eeprom->len == 0)
		return -EINVAL;

	eeprom->magic = (adapter->pdev)->vendor |
			((adapter->pdev)->device << 16);
	offset = eeprom->offset;

	ret = qlcnic_rom_fast_read_words(adapter, offset, bytes,
						eeprom->len);
	if (ret < 0)
		return ret;

	return 0;
}

static void
qlcnic_get_ringparam(struct net_device *dev,
		struct ethtool_ringparam *ring)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);

	ring->rx_pending = adapter->num_rxd;
	ring->rx_jumbo_pending = adapter->num_jumbo_rxd;
	ring->tx_pending = adapter->num_txd;

	ring->rx_max_pending = adapter->max_rxd;
	ring->rx_jumbo_max_pending = adapter->max_jumbo_rxd;
	ring->tx_max_pending = MAX_CMD_DESCRIPTORS;
}

static u32
qlcnic_validate_ringparam(u32 val, u32 min, u32 max, char *r_name)
{
	u32 num_desc;
	num_desc = max(val, min);
	num_desc = min(num_desc, max);
	num_desc = roundup_pow_of_two(num_desc);

	if (val != num_desc) {
		printk(KERN_INFO "%s: setting %s ring size %d instead of %d\n",
		       qlcnic_driver_name, r_name, num_desc, val);
	}

	return num_desc;
}

static int
qlcnic_set_ringparam(struct net_device *dev,
		struct ethtool_ringparam *ring)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	u16 num_rxd, num_jumbo_rxd, num_txd;

	if (ring->rx_mini_pending)
		return -EOPNOTSUPP;

	num_rxd = qlcnic_validate_ringparam(ring->rx_pending,
			MIN_RCV_DESCRIPTORS, adapter->max_rxd, "rx");

	num_jumbo_rxd = qlcnic_validate_ringparam(ring->rx_jumbo_pending,
			MIN_JUMBO_DESCRIPTORS, adapter->max_jumbo_rxd,
						"rx jumbo");

	num_txd = qlcnic_validate_ringparam(ring->tx_pending,
			MIN_CMD_DESCRIPTORS, MAX_CMD_DESCRIPTORS, "tx");

	if (num_rxd == adapter->num_rxd && num_txd == adapter->num_txd &&
			num_jumbo_rxd == adapter->num_jumbo_rxd)
		return 0;

	adapter->num_rxd = num_rxd;
	adapter->num_jumbo_rxd = num_jumbo_rxd;
	adapter->num_txd = num_txd;

	return qlcnic_reset_context(adapter);
}

static void qlcnic_get_channels(struct net_device *dev,
		struct ethtool_channels *channel)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);

	channel->max_rx = rounddown_pow_of_two(min_t(int,
			adapter->max_rx_ques, num_online_cpus()));
	channel->max_tx = adapter->max_tx_ques;

	channel->rx_count = adapter->max_sds_rings;
	channel->tx_count = adapter->max_tx_ques;
}

static int qlcnic_set_channels(struct net_device *dev,
		struct ethtool_channels *channel)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	int err;

	if (channel->other_count || channel->combined_count ||
	    channel->tx_count != channel->max_tx)
		return -EINVAL;

	err = qlcnic_validate_max_rss(dev, channel->max_rx, channel->rx_count);
	if (err)
		return err;

	err = qlcnic_set_max_rss(adapter, channel->rx_count);
	netdev_info(dev, "allocated 0x%x sds rings\n",
				 adapter->max_sds_rings);
	return err;
}

static void
qlcnic_get_pauseparam(struct net_device *netdev,
			  struct ethtool_pauseparam *pause)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	int port = adapter->physical_port;
	__u32 val;

	if (adapter->ahw->port_type == QLCNIC_GBE) {
		if ((port < 0) || (port > QLCNIC_NIU_MAX_GBE_PORTS))
			return;
		/* get flow control settings */
		val = QLCRD32(adapter, QLCNIC_NIU_GB_MAC_CONFIG_0(port));
		pause->rx_pause = qlcnic_gb_get_rx_flowctl(val);
		val = QLCRD32(adapter, QLCNIC_NIU_GB_PAUSE_CTL);
		switch (port) {
		case 0:
			pause->tx_pause = !(qlcnic_gb_get_gb0_mask(val));
			break;
		case 1:
			pause->tx_pause = !(qlcnic_gb_get_gb1_mask(val));
			break;
		case 2:
			pause->tx_pause = !(qlcnic_gb_get_gb2_mask(val));
			break;
		case 3:
		default:
			pause->tx_pause = !(qlcnic_gb_get_gb3_mask(val));
			break;
		}
	} else if (adapter->ahw->port_type == QLCNIC_XGBE) {
		if ((port < 0) || (port > QLCNIC_NIU_MAX_XG_PORTS))
			return;
		pause->rx_pause = 1;
		val = QLCRD32(adapter, QLCNIC_NIU_XG_PAUSE_CTL);
		if (port == 0)
			pause->tx_pause = !(qlcnic_xg_get_xg0_mask(val));
		else
			pause->tx_pause = !(qlcnic_xg_get_xg1_mask(val));
	} else {
		dev_err(&netdev->dev, "Unknown board type: %x\n",
					adapter->ahw->port_type);
	}
}

static int
qlcnic_set_pauseparam(struct net_device *netdev,
			  struct ethtool_pauseparam *pause)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	int port = adapter->physical_port;
	__u32 val;

	/* read mode */
	if (adapter->ahw->port_type == QLCNIC_GBE) {
		if ((port < 0) || (port > QLCNIC_NIU_MAX_GBE_PORTS))
			return -EIO;
		/* set flow control */
		val = QLCRD32(adapter, QLCNIC_NIU_GB_MAC_CONFIG_0(port));

		if (pause->rx_pause)
			qlcnic_gb_rx_flowctl(val);
		else
			qlcnic_gb_unset_rx_flowctl(val);

		QLCWR32(adapter, QLCNIC_NIU_GB_MAC_CONFIG_0(port),
				val);
		/* set autoneg */
		val = QLCRD32(adapter, QLCNIC_NIU_GB_PAUSE_CTL);
		switch (port) {
		case 0:
			if (pause->tx_pause)
				qlcnic_gb_unset_gb0_mask(val);
			else
				qlcnic_gb_set_gb0_mask(val);
			break;
		case 1:
			if (pause->tx_pause)
				qlcnic_gb_unset_gb1_mask(val);
			else
				qlcnic_gb_set_gb1_mask(val);
			break;
		case 2:
			if (pause->tx_pause)
				qlcnic_gb_unset_gb2_mask(val);
			else
				qlcnic_gb_set_gb2_mask(val);
			break;
		case 3:
		default:
			if (pause->tx_pause)
				qlcnic_gb_unset_gb3_mask(val);
			else
				qlcnic_gb_set_gb3_mask(val);
			break;
		}
		QLCWR32(adapter, QLCNIC_NIU_GB_PAUSE_CTL, val);
	} else if (adapter->ahw->port_type == QLCNIC_XGBE) {
		if (!pause->rx_pause || pause->autoneg)
			return -EOPNOTSUPP;

		if ((port < 0) || (port > QLCNIC_NIU_MAX_XG_PORTS))
			return -EIO;

		val = QLCRD32(adapter, QLCNIC_NIU_XG_PAUSE_CTL);
		if (port == 0) {
			if (pause->tx_pause)
				qlcnic_xg_unset_xg0_mask(val);
			else
				qlcnic_xg_set_xg0_mask(val);
		} else {
			if (pause->tx_pause)
				qlcnic_xg_unset_xg1_mask(val);
			else
				qlcnic_xg_set_xg1_mask(val);
		}
		QLCWR32(adapter, QLCNIC_NIU_XG_PAUSE_CTL, val);
	} else {
		dev_err(&netdev->dev, "Unknown board type: %x\n",
				adapter->ahw->port_type);
	}
	return 0;
}

static int qlcnic_reg_test(struct net_device *dev)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	u32 data_read;

	data_read = QLCRD32(adapter, QLCNIC_PCIX_PH_REG(0));
	if ((data_read & 0xffff) != adapter->pdev->vendor)
		return 1;

	return 0;
}

static int qlcnic_get_sset_count(struct net_device *dev, int sset)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	switch (sset) {
	case ETH_SS_TEST:
		return QLCNIC_TEST_LEN;
	case ETH_SS_STATS:
		if (adapter->flags & QLCNIC_ESWITCH_ENABLED)
			return QLCNIC_STATS_LEN + QLCNIC_DEVICE_STATS_LEN;
		return QLCNIC_STATS_LEN;
	default:
		return -EOPNOTSUPP;
	}
}

static int qlcnic_irq_test(struct net_device *netdev)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	int max_sds_rings = adapter->max_sds_rings;
	int ret;
	struct qlcnic_cmd_args cmd;

	if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
		return -EIO;

	ret = qlcnic_diag_alloc_res(netdev, QLCNIC_INTERRUPT_TEST);
	if (ret)
		goto clear_it;

	adapter->diag_cnt = 0;
	memset(&cmd, 0, sizeof(cmd));
	cmd.req.cmd = QLCNIC_CDRP_CMD_INTRPT_TEST;
	cmd.req.arg1 = adapter->ahw->pci_func;
	qlcnic_issue_cmd(adapter, &cmd);
	ret = cmd.rsp.cmd;

	if (ret)
		goto done;

	msleep(10);

	ret = !adapter->diag_cnt;

done:
	qlcnic_diag_free_res(netdev, max_sds_rings);

clear_it:
	adapter->max_sds_rings = max_sds_rings;
	clear_bit(__QLCNIC_RESETTING, &adapter->state);
	return ret;
}

#define QLCNIC_ILB_PKT_SIZE 64
#define QLCNIC_NUM_ILB_PKT	16
#define QLCNIC_ILB_MAX_RCV_LOOP 10

static void qlcnic_create_loopback_buff(unsigned char *data, u8 mac[])
{
	unsigned char random_data[] = {0xa8, 0x06, 0x45, 0x00};

	memset(data, 0x4e, QLCNIC_ILB_PKT_SIZE);

	memcpy(data, mac, ETH_ALEN);
	memcpy(data + ETH_ALEN, mac, ETH_ALEN);

	memcpy(data + 2 * ETH_ALEN, random_data, sizeof(random_data));
}

int qlcnic_check_loopback_buff(unsigned char *data, u8 mac[])
{
	unsigned char buff[QLCNIC_ILB_PKT_SIZE];
	qlcnic_create_loopback_buff(buff, mac);
	return memcmp(data, buff, QLCNIC_ILB_PKT_SIZE);
}

static int qlcnic_do_lb_test(struct qlcnic_adapter *adapter, u8 mode)
{
	struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
	struct qlcnic_host_sds_ring *sds_ring = &recv_ctx->sds_rings[0];
	struct sk_buff *skb;
	int i, loop, cnt = 0;

	for (i = 0; i < QLCNIC_NUM_ILB_PKT; i++) {
		skb = netdev_alloc_skb(adapter->netdev, QLCNIC_ILB_PKT_SIZE);
		qlcnic_create_loopback_buff(skb->data, adapter->mac_addr);
		skb_put(skb, QLCNIC_ILB_PKT_SIZE);

		adapter->diag_cnt = 0;
		qlcnic_xmit_frame(skb, adapter->netdev);

		loop = 0;
		do {
			msleep(1);
			qlcnic_process_rcv_ring_diag(sds_ring);
			if (loop++ > QLCNIC_ILB_MAX_RCV_LOOP)
				break;
		} while (!adapter->diag_cnt);

		dev_kfree_skb_any(skb);

		if (!adapter->diag_cnt)
			QLCDB(adapter, DRV,
			"LB Test: packet #%d was not received\n", i + 1);
		else
			cnt++;
	}
	if (cnt != i) {
		dev_warn(&adapter->pdev->dev, "LB Test failed\n");
		if (mode != QLCNIC_ILB_MODE) {
			dev_warn(&adapter->pdev->dev,
				"WARNING: Please make sure external"
				"loopback connector is plugged in\n");
		}
		return -1;
	}
	return 0;
}

static int qlcnic_loopback_test(struct net_device *netdev, u8 mode)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	int max_sds_rings = adapter->max_sds_rings;
	struct qlcnic_host_sds_ring *sds_ring;
	int loop = 0;
	int ret;

	if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_MULTI_LOOPBACK)) {
		netdev_info(netdev, "Firmware is not loopback test capable\n");
		return -EOPNOTSUPP;
	}

	QLCDB(adapter, DRV, "%s loopback test in progress\n",
		   mode == QLCNIC_ILB_MODE ? "internal" : "external");
	if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
		netdev_warn(netdev, "Loopback test not supported for non "
				"privilege function\n");
		return 0;
	}

	if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
		return -EBUSY;

	ret = qlcnic_diag_alloc_res(netdev, QLCNIC_LOOPBACK_TEST);
	if (ret)
		goto clear_it;

	sds_ring = &adapter->recv_ctx->sds_rings[0];

	ret = qlcnic_set_lb_mode(adapter, mode);
	if (ret)
		goto free_res;

	adapter->diag_cnt = 0;
	do {
		msleep(500);
		qlcnic_process_rcv_ring_diag(sds_ring);
		if (loop++ > QLCNIC_ILB_MAX_RCV_LOOP) {
			netdev_info(netdev, "firmware didnt respond to loopback"
				" configure request\n");
			ret = -QLCNIC_FW_NOT_RESPOND;
			goto free_res;
		} else if (adapter->diag_cnt) {
			ret = adapter->diag_cnt;
			goto free_res;
		}
	} while (!QLCNIC_IS_LB_CONFIGURED(adapter->ahw->loopback_state));

	ret = qlcnic_do_lb_test(adapter, mode);

	qlcnic_clear_lb_mode(adapter);

 free_res:
	qlcnic_diag_free_res(netdev, max_sds_rings);

 clear_it:
	adapter->max_sds_rings = max_sds_rings;
	clear_bit(__QLCNIC_RESETTING, &adapter->state);
	return ret;
}

static void
qlcnic_diag_test(struct net_device *dev, struct ethtool_test *eth_test,
		     u64 *data)
{
	memset(data, 0, sizeof(u64) * QLCNIC_TEST_LEN);

	data[0] = qlcnic_reg_test(dev);
	if (data[0])
		eth_test->flags |= ETH_TEST_FL_FAILED;

	data[1] = (u64) qlcnic_test_link(dev);
	if (data[1])
		eth_test->flags |= ETH_TEST_FL_FAILED;

	if (eth_test->flags & ETH_TEST_FL_OFFLINE) {
		data[2] = qlcnic_irq_test(dev);
		if (data[2])
			eth_test->flags |= ETH_TEST_FL_FAILED;

		data[3] = qlcnic_loopback_test(dev, QLCNIC_ILB_MODE);
		if (data[3])
			eth_test->flags |= ETH_TEST_FL_FAILED;
		if (eth_test->flags & ETH_TEST_FL_EXTERNAL_LB) {
			data[4] = qlcnic_loopback_test(dev, QLCNIC_ELB_MODE);
			if (data[4])
				eth_test->flags |= ETH_TEST_FL_FAILED;
			eth_test->flags |= ETH_TEST_FL_EXTERNAL_LB_DONE;
		}
	}
}

static void
qlcnic_get_strings(struct net_device *dev, u32 stringset, u8 * data)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	int index, i;

	switch (stringset) {
	case ETH_SS_TEST:
		memcpy(data, *qlcnic_gstrings_test,
		       QLCNIC_TEST_LEN * ETH_GSTRING_LEN);
		break;
	case ETH_SS_STATS:
		for (index = 0; index < QLCNIC_STATS_LEN; index++) {
			memcpy(data + index * ETH_GSTRING_LEN,
			       qlcnic_gstrings_stats[index].stat_string,
			       ETH_GSTRING_LEN);
		}
		if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED))
			return;
		for (i = 0; i < QLCNIC_DEVICE_STATS_LEN; index++, i++) {
			memcpy(data + index * ETH_GSTRING_LEN,
			       qlcnic_device_gstrings_stats[i],
			       ETH_GSTRING_LEN);
		}
	}
}

#define QLCNIC_FILL_ESWITCH_STATS(VAL1) \
	(((VAL1) == QLCNIC_ESW_STATS_NOT_AVAIL) ? 0 : VAL1)

static void
qlcnic_fill_device_stats(int *index, u64 *data,
		struct __qlcnic_esw_statistics *stats)
{
	int ind = *index;

	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->unicast_frames);
	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->multicast_frames);
	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->broadcast_frames);
	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->dropped_frames);
	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->errors);
	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->local_frames);
	data[ind++] = QLCNIC_FILL_ESWITCH_STATS(stats->numbytes);

	*index = ind;
}

static void
qlcnic_get_ethtool_stats(struct net_device *dev,
			     struct ethtool_stats *stats, u64 * data)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	struct qlcnic_esw_statistics port_stats;
	int index, ret;

	for (index = 0; index < QLCNIC_STATS_LEN; index++) {
		char *p =
		    (char *)adapter +
		    qlcnic_gstrings_stats[index].stat_offset;
		data[index] =
		    (qlcnic_gstrings_stats[index].sizeof_stat ==
		     sizeof(u64)) ? *(u64 *)p:(*(u32 *)p);
	}

	if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED))
		return;

	memset(&port_stats, 0, sizeof(struct qlcnic_esw_statistics));
	ret = qlcnic_get_port_stats(adapter, adapter->ahw->pci_func,
			QLCNIC_QUERY_RX_COUNTER, &port_stats.rx);
	if (ret)
		return;

	qlcnic_fill_device_stats(&index, data, &port_stats.rx);

	ret = qlcnic_get_port_stats(adapter, adapter->ahw->pci_func,
			QLCNIC_QUERY_TX_COUNTER, &port_stats.tx);
	if (ret)
		return;

	qlcnic_fill_device_stats(&index, data, &port_stats.tx);
}

static int qlcnic_set_led(struct net_device *dev,
			  enum ethtool_phys_id_state state)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	int max_sds_rings = adapter->max_sds_rings;
	int err = -EIO, active = 1;

	if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
		netdev_warn(dev, "LED test not supported for non "
				"privilege function\n");
		return -EOPNOTSUPP;
	}

	switch (state) {
	case ETHTOOL_ID_ACTIVE:
		if (test_and_set_bit(__QLCNIC_LED_ENABLE, &adapter->state))
			return -EBUSY;

		if (test_bit(__QLCNIC_RESETTING, &adapter->state))
			break;

		if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
			if (qlcnic_diag_alloc_res(dev, QLCNIC_LED_TEST))
				break;
			set_bit(__QLCNIC_DIAG_RES_ALLOC, &adapter->state);
		}

		if (adapter->nic_ops->config_led(adapter, 1, 0xf) == 0) {
			err = 0;
			break;
		}

		dev_err(&adapter->pdev->dev,
			"Failed to set LED blink state.\n");
		break;

	case ETHTOOL_ID_INACTIVE:
		active = 0;

		if (test_bit(__QLCNIC_RESETTING, &adapter->state))
			break;

		if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
			if (qlcnic_diag_alloc_res(dev, QLCNIC_LED_TEST))
				break;
			set_bit(__QLCNIC_DIAG_RES_ALLOC, &adapter->state);
		}

		if (adapter->nic_ops->config_led(adapter, 0, 0xf))
			dev_err(&adapter->pdev->dev,
				"Failed to reset LED blink state.\n");

		break;

	default:
		return -EINVAL;
	}

	if (test_and_clear_bit(__QLCNIC_DIAG_RES_ALLOC, &adapter->state))
		qlcnic_diag_free_res(dev, max_sds_rings);

	if (!active || err)
		clear_bit(__QLCNIC_LED_ENABLE, &adapter->state);

	return err;
}

static void
qlcnic_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	u32 wol_cfg;

	wol->supported = 0;
	wol->wolopts = 0;

	wol_cfg = QLCRD32(adapter, QLCNIC_WOL_CONFIG_NV);
	if (wol_cfg & (1UL << adapter->portnum))
		wol->supported |= WAKE_MAGIC;

	wol_cfg = QLCRD32(adapter, QLCNIC_WOL_CONFIG);
	if (wol_cfg & (1UL << adapter->portnum))
		wol->wolopts |= WAKE_MAGIC;
}

static int
qlcnic_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct qlcnic_adapter *adapter = netdev_priv(dev);
	u32 wol_cfg;

	if (wol->wolopts & ~WAKE_MAGIC)
		return -EOPNOTSUPP;

	wol_cfg = QLCRD32(adapter, QLCNIC_WOL_CONFIG_NV);
	if (!(wol_cfg & (1 << adapter->portnum)))
		return -EOPNOTSUPP;

	wol_cfg = QLCRD32(adapter, QLCNIC_WOL_CONFIG);
	if (wol->wolopts & WAKE_MAGIC)
		wol_cfg |= 1UL << adapter->portnum;
	else
		wol_cfg &= ~(1UL << adapter->portnum);

	QLCWR32(adapter, QLCNIC_WOL_CONFIG, wol_cfg);

	return 0;
}

/*
 * Set the coalescing parameters. Currently only normal is supported.
 * If rx_coalesce_usecs == 0 or rx_max_coalesced_frames == 0 then set the
 * firmware coalescing to default.
 */
static int qlcnic_set_intr_coalesce(struct net_device *netdev,
			struct ethtool_coalesce *ethcoal)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
		return -EINVAL;

	/*
	* Return Error if unsupported values or
	* unsupported parameters are set.
	*/
	if (ethcoal->rx_coalesce_usecs > 0xffff ||
		ethcoal->rx_max_coalesced_frames > 0xffff ||
		ethcoal->tx_coalesce_usecs ||
		ethcoal->tx_max_coalesced_frames ||
		ethcoal->rx_coalesce_usecs_irq ||
		ethcoal->rx_max_coalesced_frames_irq ||
		ethcoal->tx_coalesce_usecs_irq ||
		ethcoal->tx_max_coalesced_frames_irq ||
		ethcoal->stats_block_coalesce_usecs ||
		ethcoal->use_adaptive_rx_coalesce ||
		ethcoal->use_adaptive_tx_coalesce ||
		ethcoal->pkt_rate_low ||
		ethcoal->rx_coalesce_usecs_low ||
		ethcoal->rx_max_coalesced_frames_low ||
		ethcoal->tx_coalesce_usecs_low ||
		ethcoal->tx_max_coalesced_frames_low ||
		ethcoal->pkt_rate_high ||
		ethcoal->rx_coalesce_usecs_high ||
		ethcoal->rx_max_coalesced_frames_high ||
		ethcoal->tx_coalesce_usecs_high ||
		ethcoal->tx_max_coalesced_frames_high)
		return -EINVAL;

	if (!ethcoal->rx_coalesce_usecs ||
		!ethcoal->rx_max_coalesced_frames) {
		adapter->ahw->coal.flag = QLCNIC_INTR_DEFAULT;
		adapter->ahw->coal.rx_time_us =
			QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
		adapter->ahw->coal.rx_packets =
			QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
	} else {
		adapter->ahw->coal.flag = 0;
		adapter->ahw->coal.rx_time_us = ethcoal->rx_coalesce_usecs;
		adapter->ahw->coal.rx_packets =
			ethcoal->rx_max_coalesced_frames;
	}

	qlcnic_config_intr_coalesce(adapter);

	return 0;
}

static int qlcnic_get_intr_coalesce(struct net_device *netdev,
			struct ethtool_coalesce *ethcoal)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
		return -EINVAL;

	ethcoal->rx_coalesce_usecs = adapter->ahw->coal.rx_time_us;
	ethcoal->rx_max_coalesced_frames = adapter->ahw->coal.rx_packets;

	return 0;
}

static u32 qlcnic_get_msglevel(struct net_device *netdev)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	return adapter->msg_enable;
}

static void qlcnic_set_msglevel(struct net_device *netdev, u32 msglvl)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	adapter->msg_enable = msglvl;
}

static int
qlcnic_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;

	if (fw_dump->clr)
		dump->len = fw_dump->tmpl_hdr->size + fw_dump->size;
	else
		dump->len = 0;
	dump->flag = fw_dump->tmpl_hdr->drv_cap_mask;
	dump->version = adapter->fw_version;
	return 0;
}

static int
qlcnic_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump,
			void *buffer)
{
	int i, copy_sz;
	u32 *hdr_ptr, *data;
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;

	if (!fw_dump->clr) {
		netdev_info(netdev, "Dump not available\n");
		return -EINVAL;
	}
	/* Copy template header first */
	copy_sz = fw_dump->tmpl_hdr->size;
	hdr_ptr = (u32 *) fw_dump->tmpl_hdr;
	data = buffer;
	for (i = 0; i < copy_sz/sizeof(u32); i++)
		*data++ = cpu_to_le32(*hdr_ptr++);

	/* Copy captured dump data */
	memcpy(buffer + copy_sz, fw_dump->data, fw_dump->size);
	dump->len = copy_sz + fw_dump->size;
	dump->flag = fw_dump->tmpl_hdr->drv_cap_mask;

	/* Free dump area once data has been captured */
	vfree(fw_dump->data);
	fw_dump->data = NULL;
	fw_dump->clr = 0;
	netdev_info(netdev, "extracted the FW dump Successfully\n");
	return 0;
}

static int
qlcnic_set_dump(struct net_device *netdev, struct ethtool_dump *val)
{
	int ret = 0;
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;

	switch (val->flag) {
	case QLCNIC_FORCE_FW_DUMP_KEY:
		if (!fw_dump->enable) {
			netdev_info(netdev, "FW dump not enabled\n");
			return ret;
		}
		if (fw_dump->clr) {
			netdev_info(netdev,
			"Previous dump not cleared, not forcing dump\n");
			return ret;
		}
		netdev_info(netdev, "Forcing a FW dump\n");
		qlcnic_dev_request_reset(adapter);
		break;
	case QLCNIC_DISABLE_FW_DUMP:
		if (fw_dump->enable) {
			netdev_info(netdev, "Disabling FW dump\n");
			fw_dump->enable = 0;
		}
		break;
	case QLCNIC_ENABLE_FW_DUMP:
		if (!fw_dump->enable && fw_dump->tmpl_hdr) {
			netdev_info(netdev, "Enabling FW dump\n");
			fw_dump->enable = 1;
		}
		break;
	case QLCNIC_FORCE_FW_RESET:
		netdev_info(netdev, "Forcing a FW reset\n");
		qlcnic_dev_request_reset(adapter);
		adapter->flags &= ~QLCNIC_FW_RESET_OWNER;
		break;
	default:
		if (val->flag > QLCNIC_DUMP_MASK_MAX ||
			val->flag < QLCNIC_DUMP_MASK_MIN) {
				netdev_info(netdev,
				"Invalid dump level: 0x%x\n", val->flag);
				ret = -EINVAL;
				goto out;
		}
		fw_dump->tmpl_hdr->drv_cap_mask = val->flag & 0xff;
		netdev_info(netdev, "Driver mask changed to: 0x%x\n",
			fw_dump->tmpl_hdr->drv_cap_mask);
	}
out:
	return ret;
}

const struct ethtool_ops qlcnic_ethtool_ops = {
	.get_settings = qlcnic_get_settings,
	.set_settings = qlcnic_set_settings,
	.get_drvinfo = qlcnic_get_drvinfo,
	.get_regs_len = qlcnic_get_regs_len,
	.get_regs = qlcnic_get_regs,
	.get_link = ethtool_op_get_link,
	.get_eeprom_len = qlcnic_get_eeprom_len,
	.get_eeprom = qlcnic_get_eeprom,
	.get_ringparam = qlcnic_get_ringparam,
	.set_ringparam = qlcnic_set_ringparam,
	.get_channels = qlcnic_get_channels,
	.set_channels = qlcnic_set_channels,
	.get_pauseparam = qlcnic_get_pauseparam,
	.set_pauseparam = qlcnic_set_pauseparam,
	.get_wol = qlcnic_get_wol,
	.set_wol = qlcnic_set_wol,
	.self_test = qlcnic_diag_test,
	.get_strings = qlcnic_get_strings,
	.get_ethtool_stats = qlcnic_get_ethtool_stats,
	.get_sset_count = qlcnic_get_sset_count,
	.get_coalesce = qlcnic_get_intr_coalesce,
	.set_coalesce = qlcnic_set_intr_coalesce,
	.set_phys_id = qlcnic_set_led,
	.set_msglevel = qlcnic_set_msglevel,
	.get_msglevel = qlcnic_get_msglevel,
	.get_dump_flag = qlcnic_get_dump_flag,
	.get_dump_data = qlcnic_get_dump_data,
	.set_dump = qlcnic_set_dump,
};
