kernel / drivers / net / ethernet / emulex / benet / be_ethtool.c

/*
 * Copyright (C) 2005 - 2011 Emulex
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Contact Information:
 * [e-mail]
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

#include "be.h"
#include "be_cmds.h"
#include <linux/ethtool.h>

struct be_ethtool_stat {
	char desc[ETH_GSTRING_LEN];
	int type;
	int size;
	int offset;
};

enum {DRVSTAT_TX, DRVSTAT_RX, DRVSTAT};
#define FIELDINFO(_struct, field) FIELD_SIZEOF(_struct, field), \
					offsetof(_struct, field)
#define DRVSTAT_TX_INFO(field)	#field, DRVSTAT_TX,\
					FIELDINFO(struct be_tx_stats, field)
#define DRVSTAT_RX_INFO(field)	#field, DRVSTAT_RX,\
					FIELDINFO(struct be_rx_stats, field)
#define	DRVSTAT_INFO(field)	#field, DRVSTAT,\
					FIELDINFO(struct be_drv_stats, field)

static const struct be_ethtool_stat et_stats[] = {
	{DRVSTAT_INFO(tx_events)},
	{DRVSTAT_INFO(rx_crc_errors)},
	{DRVSTAT_INFO(rx_alignment_symbol_errors)},
	{DRVSTAT_INFO(rx_pause_frames)},
	{DRVSTAT_INFO(rx_control_frames)},
	{DRVSTAT_INFO(rx_in_range_errors)},
	{DRVSTAT_INFO(rx_out_range_errors)},
	{DRVSTAT_INFO(rx_frame_too_long)},
	{DRVSTAT_INFO(rx_address_match_errors)},
	{DRVSTAT_INFO(rx_dropped_too_small)},
	{DRVSTAT_INFO(rx_dropped_too_short)},
	{DRVSTAT_INFO(rx_dropped_header_too_small)},
	{DRVSTAT_INFO(rx_dropped_tcp_length)},
	{DRVSTAT_INFO(rx_dropped_runt)},
	{DRVSTAT_INFO(rxpp_fifo_overflow_drop)},
	{DRVSTAT_INFO(rx_input_fifo_overflow_drop)},
	{DRVSTAT_INFO(rx_ip_checksum_errs)},
	{DRVSTAT_INFO(rx_tcp_checksum_errs)},
	{DRVSTAT_INFO(rx_udp_checksum_errs)},
	{DRVSTAT_INFO(tx_pauseframes)},
	{DRVSTAT_INFO(tx_controlframes)},
	{DRVSTAT_INFO(rx_priority_pause_frames)},
	{DRVSTAT_INFO(pmem_fifo_overflow_drop)},
	{DRVSTAT_INFO(jabber_events)},
	{DRVSTAT_INFO(rx_drops_no_pbuf)},
	{DRVSTAT_INFO(rx_drops_no_txpb)},
	{DRVSTAT_INFO(rx_drops_no_erx_descr)},
	{DRVSTAT_INFO(rx_drops_no_tpre_descr)},
	{DRVSTAT_INFO(rx_drops_too_many_frags)},
	{DRVSTAT_INFO(rx_drops_invalid_ring)},
	{DRVSTAT_INFO(forwarded_packets)},
	{DRVSTAT_INFO(rx_drops_mtu)},
	{DRVSTAT_INFO(eth_red_drops)},
	{DRVSTAT_INFO(be_on_die_temperature)}
};
#define ETHTOOL_STATS_NUM ARRAY_SIZE(et_stats)

/* Stats related to multi RX queues: get_stats routine assumes bytes, pkts
 * are first and second members respectively.
 */
static const struct be_ethtool_stat et_rx_stats[] = {
	{DRVSTAT_RX_INFO(rx_bytes)},/* If moving this member see above note */
	{DRVSTAT_RX_INFO(rx_pkts)}, /* If moving this member see above note */
	{DRVSTAT_RX_INFO(rx_polls)},
	{DRVSTAT_RX_INFO(rx_events)},
	{DRVSTAT_RX_INFO(rx_compl)},
	{DRVSTAT_RX_INFO(rx_mcast_pkts)},
	{DRVSTAT_RX_INFO(rx_post_fail)},
	{DRVSTAT_RX_INFO(rx_drops_no_skbs)},
	{DRVSTAT_RX_INFO(rx_drops_no_frags)}
};
#define ETHTOOL_RXSTATS_NUM (ARRAY_SIZE(et_rx_stats))

/* Stats related to multi TX queues: get_stats routine assumes compl is the
 * first member
 */
static const struct be_ethtool_stat et_tx_stats[] = {
	{DRVSTAT_TX_INFO(tx_compl)}, /* If moving this member see above note */
	{DRVSTAT_TX_INFO(tx_bytes)},
	{DRVSTAT_TX_INFO(tx_pkts)},
	{DRVSTAT_TX_INFO(tx_reqs)},
	{DRVSTAT_TX_INFO(tx_wrbs)},
	{DRVSTAT_TX_INFO(tx_compl)},
	{DRVSTAT_TX_INFO(tx_stops)}
};
#define ETHTOOL_TXSTATS_NUM (ARRAY_SIZE(et_tx_stats))

static const char et_self_tests[][ETH_GSTRING_LEN] = {
	"MAC Loopback test",
	"PHY Loopback test",
	"External Loopback test",
	"DDR DMA test",
	"Link test"
};

#define ETHTOOL_TESTS_NUM ARRAY_SIZE(et_self_tests)
#define BE_MAC_LOOPBACK 0x0
#define BE_PHY_LOOPBACK 0x1
#define BE_ONE_PORT_EXT_LOOPBACK 0x2
#define BE_NO_LOOPBACK 0xff

static void be_get_drvinfo(struct net_device *netdev,
				struct ethtool_drvinfo *drvinfo)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	char fw_on_flash[FW_VER_LEN];

	memset(fw_on_flash, 0 , sizeof(fw_on_flash));
	be_cmd_get_fw_ver(adapter, adapter->fw_ver, fw_on_flash);

	strcpy(drvinfo->driver, DRV_NAME);
	strcpy(drvinfo->version, DRV_VER);
	strncpy(drvinfo->fw_version, adapter->fw_ver, FW_VER_LEN);
	if (memcmp(adapter->fw_ver, fw_on_flash, FW_VER_LEN) != 0) {
		strcat(drvinfo->fw_version, " [");
		strcat(drvinfo->fw_version, fw_on_flash);
		strcat(drvinfo->fw_version, "]");
	}

	strcpy(drvinfo->bus_info, pci_name(adapter->pdev));
	drvinfo->testinfo_len = 0;
	drvinfo->regdump_len = 0;
	drvinfo->eedump_len = 0;
}

static int
be_get_reg_len(struct net_device *netdev)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	u32 log_size = 0;

	if (be_physfn(adapter))
		be_cmd_get_reg_len(adapter, &log_size);

	return log_size;
}

static void
be_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *buf)
{
	struct be_adapter *adapter = netdev_priv(netdev);

	if (be_physfn(adapter)) {
		memset(buf, 0, regs->len);
		be_cmd_get_regs(adapter, regs->len, buf);
	}
}

static int
be_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	struct be_eq_obj *rx_eq = &adapter->rx_obj[0].rx_eq;
	struct be_eq_obj *tx_eq = &adapter->tx_eq;

	coalesce->rx_coalesce_usecs = rx_eq->cur_eqd;
	coalesce->rx_coalesce_usecs_high = rx_eq->max_eqd;
	coalesce->rx_coalesce_usecs_low = rx_eq->min_eqd;

	coalesce->tx_coalesce_usecs = tx_eq->cur_eqd;
	coalesce->tx_coalesce_usecs_high = tx_eq->max_eqd;
	coalesce->tx_coalesce_usecs_low = tx_eq->min_eqd;

	coalesce->use_adaptive_rx_coalesce = rx_eq->enable_aic;
	coalesce->use_adaptive_tx_coalesce = tx_eq->enable_aic;

	return 0;
}

/*
 * This routine is used to set interrup coalescing delay
 */
static int
be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	struct be_rx_obj *rxo;
	struct be_eq_obj *rx_eq;
	struct be_eq_obj *tx_eq = &adapter->tx_eq;
	u32 rx_max, rx_min, rx_cur;
	int status = 0, i;
	u32 tx_cur;

	if (coalesce->use_adaptive_tx_coalesce == 1)
		return -EINVAL;

	for_all_rx_queues(adapter, rxo, i) {
		rx_eq = &rxo->rx_eq;

		if (!rx_eq->enable_aic && coalesce->use_adaptive_rx_coalesce)
			rx_eq->cur_eqd = 0;
		rx_eq->enable_aic = coalesce->use_adaptive_rx_coalesce;

		rx_max = coalesce->rx_coalesce_usecs_high;
		rx_min = coalesce->rx_coalesce_usecs_low;
		rx_cur = coalesce->rx_coalesce_usecs;

		if (rx_eq->enable_aic) {
			if (rx_max > BE_MAX_EQD)
				rx_max = BE_MAX_EQD;
			if (rx_min > rx_max)
				rx_min = rx_max;
			rx_eq->max_eqd = rx_max;
			rx_eq->min_eqd = rx_min;
			if (rx_eq->cur_eqd > rx_max)
				rx_eq->cur_eqd = rx_max;
			if (rx_eq->cur_eqd < rx_min)
				rx_eq->cur_eqd = rx_min;
		} else {
			if (rx_cur > BE_MAX_EQD)
				rx_cur = BE_MAX_EQD;
			if (rx_eq->cur_eqd != rx_cur) {
				status = be_cmd_modify_eqd(adapter, rx_eq->q.id,
						rx_cur);
				if (!status)
					rx_eq->cur_eqd = rx_cur;
			}
		}
	}

	tx_cur = coalesce->tx_coalesce_usecs;

	if (tx_cur > BE_MAX_EQD)
		tx_cur = BE_MAX_EQD;
	if (tx_eq->cur_eqd != tx_cur) {
		status = be_cmd_modify_eqd(adapter, tx_eq->q.id, tx_cur);
		if (!status)
			tx_eq->cur_eqd = tx_cur;
	}

	return 0;
}

static void
be_get_ethtool_stats(struct net_device *netdev,
		struct ethtool_stats *stats, uint64_t *data)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	struct be_rx_obj *rxo;
	struct be_tx_obj *txo;
	void *p;
	unsigned int i, j, base = 0, start;

	for (i = 0; i < ETHTOOL_STATS_NUM; i++) {
		p = (u8 *)&adapter->drv_stats + et_stats[i].offset;
		data[i] = *(u32 *)p;
	}
	base += ETHTOOL_STATS_NUM;

	for_all_rx_queues(adapter, rxo, j) {
		struct be_rx_stats *stats = rx_stats(rxo);

		do {
			start = u64_stats_fetch_begin_bh(&stats->sync);
			data[base] = stats->rx_bytes;
			data[base + 1] = stats->rx_pkts;
		} while (u64_stats_fetch_retry_bh(&stats->sync, start));

		for (i = 2; i < ETHTOOL_RXSTATS_NUM; i++) {
			p = (u8 *)stats + et_rx_stats[i].offset;
			data[base + i] = *(u32 *)p;
		}
		base += ETHTOOL_RXSTATS_NUM;
	}

	for_all_tx_queues(adapter, txo, j) {
		struct be_tx_stats *stats = tx_stats(txo);

		do {
			start = u64_stats_fetch_begin_bh(&stats->sync_compl);
			data[base] = stats->tx_compl;
		} while (u64_stats_fetch_retry_bh(&stats->sync_compl, start));

		do {
			start = u64_stats_fetch_begin_bh(&stats->sync);
			for (i = 1; i < ETHTOOL_TXSTATS_NUM; i++) {
				p = (u8 *)stats + et_tx_stats[i].offset;
				data[base + i] =
					(et_tx_stats[i].size == sizeof(u64)) ?
						*(u64 *)p : *(u32 *)p;
			}
		} while (u64_stats_fetch_retry_bh(&stats->sync, start));
		base += ETHTOOL_TXSTATS_NUM;
	}
}

static void
be_get_stat_strings(struct net_device *netdev, uint32_t stringset,
		uint8_t *data)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	int i, j;

	switch (stringset) {
	case ETH_SS_STATS:
		for (i = 0; i < ETHTOOL_STATS_NUM; i++) {
			memcpy(data, et_stats[i].desc, ETH_GSTRING_LEN);
			data += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_rx_qs; i++) {
			for (j = 0; j < ETHTOOL_RXSTATS_NUM; j++) {
				sprintf(data, "rxq%d: %s", i,
					et_rx_stats[j].desc);
				data += ETH_GSTRING_LEN;
			}
		}
		for (i = 0; i < adapter->num_tx_qs; i++) {
			for (j = 0; j < ETHTOOL_TXSTATS_NUM; j++) {
				sprintf(data, "txq%d: %s", i,
					et_tx_stats[j].desc);
				data += ETH_GSTRING_LEN;
			}
		}
		break;
	case ETH_SS_TEST:
		for (i = 0; i < ETHTOOL_TESTS_NUM; i++) {
			memcpy(data, et_self_tests[i], ETH_GSTRING_LEN);
			data += ETH_GSTRING_LEN;
		}
		break;
	}
}

static int be_get_sset_count(struct net_device *netdev, int stringset)
{
	struct be_adapter *adapter = netdev_priv(netdev);

	switch (stringset) {
	case ETH_SS_TEST:
		return ETHTOOL_TESTS_NUM;
	case ETH_SS_STATS:
		return ETHTOOL_STATS_NUM +
			adapter->num_rx_qs * ETHTOOL_RXSTATS_NUM +
			adapter->num_tx_qs * ETHTOOL_TXSTATS_NUM;
	default:
		return -EINVAL;
	}
}

static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	struct be_phy_info phy_info;
	u8 mac_speed = 0;
	u16 link_speed = 0;
	int status;

	if ((adapter->link_speed < 0) || (!(netdev->flags & IFF_UP))) {
		status = be_cmd_link_status_query(adapter, &mac_speed,
						&link_speed, 0);

		/* link_speed is in units of 10 Mbps */
		if (link_speed) {
			ethtool_cmd_speed_set(ecmd, link_speed*10);
		} else {
			switch (mac_speed) {
			case PHY_LINK_SPEED_10MBPS:
				ethtool_cmd_speed_set(ecmd, SPEED_10);
				break;
			case PHY_LINK_SPEED_100MBPS:
				ethtool_cmd_speed_set(ecmd, SPEED_100);
				break;
			case PHY_LINK_SPEED_1GBPS:
				ethtool_cmd_speed_set(ecmd, SPEED_1000);
				break;
			case PHY_LINK_SPEED_10GBPS:
				ethtool_cmd_speed_set(ecmd, SPEED_10000);
				break;
			case PHY_LINK_SPEED_ZERO:
				ethtool_cmd_speed_set(ecmd, 0);
				break;
			}
		}

		status = be_cmd_get_phy_info(adapter, &phy_info);
		if (!status) {
			switch (phy_info.interface_type) {
			case PHY_TYPE_XFP_10GB:
			case PHY_TYPE_SFP_1GB:
			case PHY_TYPE_SFP_PLUS_10GB:
				ecmd->port = PORT_FIBRE;
				break;
			default:
				ecmd->port = PORT_TP;
				break;
			}

			switch (phy_info.interface_type) {
			case PHY_TYPE_KR_10GB:
			case PHY_TYPE_KX4_10GB:
				ecmd->autoneg = AUTONEG_ENABLE;
			ecmd->transceiver = XCVR_INTERNAL;
				break;
			default:
				ecmd->autoneg = AUTONEG_DISABLE;
				ecmd->transceiver = XCVR_EXTERNAL;
				break;
			}
		}

		/* Save for future use */
		adapter->link_speed = ethtool_cmd_speed(ecmd);
		adapter->port_type = ecmd->port;
		adapter->transceiver = ecmd->transceiver;
		adapter->autoneg = ecmd->autoneg;
	} else {
		ethtool_cmd_speed_set(ecmd, adapter->link_speed);
		ecmd->port = adapter->port_type;
		ecmd->transceiver = adapter->transceiver;
		ecmd->autoneg = adapter->autoneg;
	}

	ecmd->duplex = DUPLEX_FULL;
	ecmd->phy_address = adapter->port_num;
	switch (ecmd->port) {
	case PORT_FIBRE:
		ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
		break;
	case PORT_TP:
		ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_TP);
		break;
	case PORT_AUI:
		ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_AUI);
		break;
	}

	if (ecmd->autoneg) {
		ecmd->supported |= SUPPORTED_1000baseT_Full;
		ecmd->supported |= SUPPORTED_Autoneg;
		ecmd->advertising |= (ADVERTISED_10000baseT_Full |
				ADVERTISED_1000baseT_Full);
	}

	return 0;
}

static void
be_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring)
{
	struct be_adapter *adapter = netdev_priv(netdev);

	ring->rx_max_pending = adapter->rx_obj[0].q.len;
	ring->tx_max_pending = adapter->tx_obj[0].q.len;

	ring->rx_pending = atomic_read(&adapter->rx_obj[0].q.used);
	ring->tx_pending = atomic_read(&adapter->tx_obj[0].q.used);
}

static void
be_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
{
	struct be_adapter *adapter = netdev_priv(netdev);

	be_cmd_get_flow_control(adapter, &ecmd->tx_pause, &ecmd->rx_pause);
	ecmd->autoneg = 0;
}

static int
be_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	int status;

	if (ecmd->autoneg != 0)
		return -EINVAL;
	adapter->tx_fc = ecmd->tx_pause;
	adapter->rx_fc = ecmd->rx_pause;

	status = be_cmd_set_flow_control(adapter,
					adapter->tx_fc, adapter->rx_fc);
	if (status)
		dev_warn(&adapter->pdev->dev, "Pause param set failed.\n");

	return status;
}

static int
be_set_phys_id(struct net_device *netdev,
	       enum ethtool_phys_id_state state)
{
	struct be_adapter *adapter = netdev_priv(netdev);

	switch (state) {
	case ETHTOOL_ID_ACTIVE:
		be_cmd_get_beacon_state(adapter, adapter->hba_port_num,
					&adapter->beacon_state);
		return 1;	/* cycle on/off once per second */

	case ETHTOOL_ID_ON:
		be_cmd_set_beacon_state(adapter, adapter->hba_port_num, 0, 0,
					BEACON_STATE_ENABLED);
		break;

	case ETHTOOL_ID_OFF:
		be_cmd_set_beacon_state(adapter, adapter->hba_port_num, 0, 0,
					BEACON_STATE_DISABLED);
		break;

	case ETHTOOL_ID_INACTIVE:
		be_cmd_set_beacon_state(adapter, adapter->hba_port_num, 0, 0,
					adapter->beacon_state);
	}

	return 0;
}

static bool
be_is_wol_supported(struct be_adapter *adapter)
{
	if (!be_physfn(adapter))
		return false;
	else
		return true;
}

static void
be_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
	struct be_adapter *adapter = netdev_priv(netdev);

	if (be_is_wol_supported(adapter))
		wol->supported = WAKE_MAGIC;

	if (adapter->wol)
		wol->wolopts = WAKE_MAGIC;
	else
		wol->wolopts = 0;
	memset(&wol->sopass, 0, sizeof(wol->sopass));
}

static int
be_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
{
	struct be_adapter *adapter = netdev_priv(netdev);

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

	if ((wol->wolopts & WAKE_MAGIC) && be_is_wol_supported(adapter))
		adapter->wol = true;
	else
		adapter->wol = false;

	return 0;
}

static int
be_test_ddr_dma(struct be_adapter *adapter)
{
	int ret, i;
	struct be_dma_mem ddrdma_cmd;
	static const u64 pattern[2] = {
		0x5a5a5a5a5a5a5a5aULL, 0xa5a5a5a5a5a5a5a5ULL
	};

	ddrdma_cmd.size = sizeof(struct be_cmd_req_ddrdma_test);
	ddrdma_cmd.va = dma_alloc_coherent(&adapter->pdev->dev, ddrdma_cmd.size,
					   &ddrdma_cmd.dma, GFP_KERNEL);
	if (!ddrdma_cmd.va) {
		dev_err(&adapter->pdev->dev, "Memory allocation failure\n");
		return -ENOMEM;
	}

	for (i = 0; i < 2; i++) {
		ret = be_cmd_ddr_dma_test(adapter, pattern[i],
					4096, &ddrdma_cmd);
		if (ret != 0)
			goto err;
	}

err:
	dma_free_coherent(&adapter->pdev->dev, ddrdma_cmd.size, ddrdma_cmd.va,
			  ddrdma_cmd.dma);
	return ret;
}

static u64 be_loopback_test(struct be_adapter *adapter, u8 loopback_type,
				u64 *status)
{
	be_cmd_set_loopback(adapter, adapter->hba_port_num,
				loopback_type, 1);
	*status = be_cmd_loopback_test(adapter, adapter->hba_port_num,
				loopback_type, 1500,
				2, 0xabc);
	be_cmd_set_loopback(adapter, adapter->hba_port_num,
				BE_NO_LOOPBACK, 1);
	return *status;
}

static void
be_self_test(struct net_device *netdev, struct ethtool_test *test, u64 *data)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	u8 mac_speed = 0;
	u16 qos_link_speed = 0;

	memset(data, 0, sizeof(u64) * ETHTOOL_TESTS_NUM);

	if (test->flags & ETH_TEST_FL_OFFLINE) {
		if (be_loopback_test(adapter, BE_MAC_LOOPBACK,
						&data[0]) != 0) {
			test->flags |= ETH_TEST_FL_FAILED;
		}
		if (be_loopback_test(adapter, BE_PHY_LOOPBACK,
						&data[1]) != 0) {
			test->flags |= ETH_TEST_FL_FAILED;
		}
		if (be_loopback_test(adapter, BE_ONE_PORT_EXT_LOOPBACK,
						&data[2]) != 0) {
			test->flags |= ETH_TEST_FL_FAILED;
		}
	}

	if (be_test_ddr_dma(adapter) != 0) {
		data[3] = 1;
		test->flags |= ETH_TEST_FL_FAILED;
	}

	if (be_cmd_link_status_query(adapter, &mac_speed,
				&qos_link_speed, 0) != 0) {
		test->flags |= ETH_TEST_FL_FAILED;
		data[4] = -1;
	} else if (!mac_speed) {
		test->flags |= ETH_TEST_FL_FAILED;
		data[4] = 1;
	}
}

static int
be_do_flash(struct net_device *netdev, struct ethtool_flash *efl)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	char file_name[ETHTOOL_FLASH_MAX_FILENAME];

	file_name[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
	strcpy(file_name, efl->data);

	return be_load_fw(adapter, file_name);
}

static int
be_get_eeprom_len(struct net_device *netdev)
{
	return BE_READ_SEEPROM_LEN;
}

static int
be_read_eeprom(struct net_device *netdev, struct ethtool_eeprom *eeprom,
			uint8_t *data)
{
	struct be_adapter *adapter = netdev_priv(netdev);
	struct be_dma_mem eeprom_cmd;
	struct be_cmd_resp_seeprom_read *resp;
	int status;

	if (!eeprom->len)
		return -EINVAL;

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

	memset(&eeprom_cmd, 0, sizeof(struct be_dma_mem));
	eeprom_cmd.size = sizeof(struct be_cmd_req_seeprom_read);
	eeprom_cmd.va = dma_alloc_coherent(&adapter->pdev->dev, eeprom_cmd.size,
					   &eeprom_cmd.dma, GFP_KERNEL);

	if (!eeprom_cmd.va) {
		dev_err(&adapter->pdev->dev,
			"Memory allocation failure. Could not read eeprom\n");
		return -ENOMEM;
	}

	status = be_cmd_get_seeprom_data(adapter, &eeprom_cmd);

	if (!status) {
		resp = eeprom_cmd.va;
		memcpy(data, resp->seeprom_data + eeprom->offset, eeprom->len);
	}
	dma_free_coherent(&adapter->pdev->dev, eeprom_cmd.size, eeprom_cmd.va,
			  eeprom_cmd.dma);

	return status;
}

const struct ethtool_ops be_ethtool_ops = {
	.get_settings = be_get_settings,
	.get_drvinfo = be_get_drvinfo,
	.get_wol = be_get_wol,
	.set_wol = be_set_wol,
	.get_link = ethtool_op_get_link,
	.get_eeprom_len = be_get_eeprom_len,
	.get_eeprom = be_read_eeprom,
	.get_coalesce = be_get_coalesce,
	.set_coalesce = be_set_coalesce,
	.get_ringparam = be_get_ringparam,
	.get_pauseparam = be_get_pauseparam,
	.set_pauseparam = be_set_pauseparam,
	.get_strings = be_get_stat_strings,
	.set_phys_id = be_set_phys_id,
	.get_sset_count = be_get_sset_count,
	.get_ethtool_stats = be_get_ethtool_stats,
	.get_regs_len = be_get_reg_len,
	.get_regs = be_get_regs,
	.flash_device = be_do_flash,
	.self_test = be_self_test,
};