ethtool.c

   1// SPDX-License-Identifier: GPL-2.0
   2/* Copyright(c) 1999 - 2018 Intel Corporation. */
   3
   4/* ethtool support for e1000 */
   5
   6#include <linux/netdevice.h>
   7#include <linux/interrupt.h>
   8#include <linux/ethtool.h>
   9#include <linux/pci.h>
  10#include <linux/slab.h>
  11#include <linux/delay.h>
  12#include <linux/vmalloc.h>
  13#include <linux/pm_runtime.h>
  14
  15#include "e1000.h"
  16
  17enum { NETDEV_STATS, E1000_STATS };
  18
  19struct e1000_stats {
  20	char stat_string[ETH_GSTRING_LEN];
  21	int type;
  22	int sizeof_stat;
  23	int stat_offset;
  24};
  25
  26static const char e1000e_priv_flags_strings[][ETH_GSTRING_LEN] = {
  27#define E1000E_PRIV_FLAGS_S0IX_ENABLED	BIT(0)
  28	"s0ix-enabled",
  29#define E1000E_PRIV_FLAGS_DISABLE_K1	BIT(1)
  30	"disable-k1",
  31};
  32
  33#define E1000E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(e1000e_priv_flags_strings)
  34
  35#define E1000_STAT(str, m) { \
  36		.stat_string = str, \
  37		.type = E1000_STATS, \
  38		.sizeof_stat = sizeof(((struct e1000_adapter *)0)->m), \
  39		.stat_offset = offsetof(struct e1000_adapter, m) }
  40#define E1000_NETDEV_STAT(str, m) { \
  41		.stat_string = str, \
  42		.type = NETDEV_STATS, \
  43		.sizeof_stat = sizeof(((struct rtnl_link_stats64 *)0)->m), \
  44		.stat_offset = offsetof(struct rtnl_link_stats64, m) }
  45
  46static const struct e1000_stats e1000_gstrings_stats[] = {
  47	E1000_STAT("rx_packets", stats.gprc),
  48	E1000_STAT("tx_packets", stats.gptc),
  49	E1000_STAT("rx_bytes", stats.gorc),
  50	E1000_STAT("tx_bytes", stats.gotc),
  51	E1000_STAT("rx_broadcast", stats.bprc),
  52	E1000_STAT("tx_broadcast", stats.bptc),
  53	E1000_STAT("rx_multicast", stats.mprc),
  54	E1000_STAT("tx_multicast", stats.mptc),
  55	E1000_NETDEV_STAT("rx_errors", rx_errors),
  56	E1000_NETDEV_STAT("tx_errors", tx_errors),
  57	E1000_NETDEV_STAT("tx_dropped", tx_dropped),
  58	E1000_STAT("multicast", stats.mprc),
  59	E1000_STAT("collisions", stats.colc),
  60	E1000_NETDEV_STAT("rx_length_errors", rx_length_errors),
  61	E1000_NETDEV_STAT("rx_over_errors", rx_over_errors),
  62	E1000_STAT("rx_crc_errors", stats.crcerrs),
  63	E1000_NETDEV_STAT("rx_frame_errors", rx_frame_errors),
  64	E1000_STAT("rx_no_buffer_count", stats.rnbc),
  65	E1000_STAT("rx_missed_errors", stats.mpc),
  66	E1000_STAT("tx_aborted_errors", stats.ecol),
  67	E1000_STAT("tx_carrier_errors", stats.tncrs),
  68	E1000_NETDEV_STAT("tx_fifo_errors", tx_fifo_errors),
  69	E1000_NETDEV_STAT("tx_heartbeat_errors", tx_heartbeat_errors),
  70	E1000_STAT("tx_window_errors", stats.latecol),
  71	E1000_STAT("tx_abort_late_coll", stats.latecol),
  72	E1000_STAT("tx_deferred_ok", stats.dc),
  73	E1000_STAT("tx_single_coll_ok", stats.scc),
  74	E1000_STAT("tx_multi_coll_ok", stats.mcc),
  75	E1000_STAT("tx_timeout_count", tx_timeout_count),
  76	E1000_STAT("tx_restart_queue", restart_queue),
  77	E1000_STAT("rx_long_length_errors", stats.roc),
  78	E1000_STAT("rx_short_length_errors", stats.ruc),
  79	E1000_STAT("rx_align_errors", stats.algnerrc),
  80	E1000_STAT("tx_tcp_seg_good", stats.tsctc),
  81	E1000_STAT("tx_tcp_seg_failed", stats.tsctfc),
  82	E1000_STAT("rx_flow_control_xon", stats.xonrxc),
  83	E1000_STAT("rx_flow_control_xoff", stats.xoffrxc),
  84	E1000_STAT("tx_flow_control_xon", stats.xontxc),
  85	E1000_STAT("tx_flow_control_xoff", stats.xofftxc),
  86	E1000_STAT("rx_csum_offload_good", hw_csum_good),
  87	E1000_STAT("rx_csum_offload_errors", hw_csum_err),
  88	E1000_STAT("rx_header_split", rx_hdr_split),
  89	E1000_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
  90	E1000_STAT("tx_smbus", stats.mgptc),
  91	E1000_STAT("rx_smbus", stats.mgprc),
  92	E1000_STAT("dropped_smbus", stats.mgpdc),
  93	E1000_STAT("rx_dma_failed", rx_dma_failed),
  94	E1000_STAT("tx_dma_failed", tx_dma_failed),
  95	E1000_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
  96	E1000_STAT("uncorr_ecc_errors", uncorr_errors),
  97	E1000_STAT("corr_ecc_errors", corr_errors),
  98	E1000_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
  99	E1000_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
 100};
 101
 102#define E1000_GLOBAL_STATS_LEN	ARRAY_SIZE(e1000_gstrings_stats)
 103#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN)
 104static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {
 105	"Register test  (offline)", "Eeprom test    (offline)",
 106	"Interrupt test (offline)", "Loopback test  (offline)",
 107	"Link test   (on/offline)"
 108};
 109
 110#define E1000_TEST_LEN ARRAY_SIZE(e1000_gstrings_test)
 111
 112static int e1000_get_link_ksettings(struct net_device *netdev,
 113				    struct ethtool_link_ksettings *cmd)
 114{
 115	u32 speed, supported, advertising, lp_advertising, lpa_t;
 116	struct e1000_adapter *adapter = netdev_priv(netdev);
 117	struct e1000_hw *hw = &adapter->hw;
 118
 119	if (hw->phy.media_type == e1000_media_type_copper) {
 120		supported = (SUPPORTED_10baseT_Half |
 121			     SUPPORTED_10baseT_Full |
 122			     SUPPORTED_100baseT_Half |
 123			     SUPPORTED_100baseT_Full |
 124			     SUPPORTED_1000baseT_Full |
 125			     SUPPORTED_Asym_Pause |
 126			     SUPPORTED_Autoneg |
 127			     SUPPORTED_Pause |
 128			     SUPPORTED_TP);
 129		if (hw->phy.type == e1000_phy_ife)
 130			supported &= ~SUPPORTED_1000baseT_Full;
 131		advertising = ADVERTISED_TP;
 132
 133		if (hw->mac.autoneg == 1) {
 134			advertising |= ADVERTISED_Autoneg;
 135			/* the e1000 autoneg seems to match ethtool nicely */
 136			advertising |= hw->phy.autoneg_advertised;
 137		}
 138
 139		cmd->base.port = PORT_TP;
 140		cmd->base.phy_address = hw->phy.addr;
 141	} else {
 142		supported   = (SUPPORTED_1000baseT_Full |
 143			       SUPPORTED_FIBRE |
 144			       SUPPORTED_Autoneg);
 145
 146		advertising = (ADVERTISED_1000baseT_Full |
 147			       ADVERTISED_FIBRE |
 148			       ADVERTISED_Autoneg);
 149
 150		cmd->base.port = PORT_FIBRE;
 151	}
 152
 153	speed = SPEED_UNKNOWN;
 154	cmd->base.duplex = DUPLEX_UNKNOWN;
 155
 156	if (netif_running(netdev)) {
 157		if (netif_carrier_ok(netdev)) {
 158			speed = adapter->link_speed;
 159			cmd->base.duplex = adapter->link_duplex - 1;
 160		}
 161	} else {
 162		u32 status = er32(STATUS);
 163
 164		if (status & E1000_STATUS_LU) {
 165			if (status & E1000_STATUS_SPEED_1000)
 166				speed = SPEED_1000;
 167			else if (status & E1000_STATUS_SPEED_100)
 168				speed = SPEED_100;
 169			else
 170				speed = SPEED_10;
 171
 172			if (status & E1000_STATUS_FD)
 173				cmd->base.duplex = DUPLEX_FULL;
 174			else
 175				cmd->base.duplex = DUPLEX_HALF;
 176		}
 177	}
 178
 179	cmd->base.speed = speed;
 180	cmd->base.autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||
 181			 hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
 182
 183	/* MDI-X => 2; MDI =>1; Invalid =>0 */
 184	if ((hw->phy.media_type == e1000_media_type_copper) &&
 185	    netif_carrier_ok(netdev))
 186		cmd->base.eth_tp_mdix = hw->phy.is_mdix ?
 187			ETH_TP_MDI_X : ETH_TP_MDI;
 188	else
 189		cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
 190
 191	if (hw->phy.mdix == AUTO_ALL_MODES)
 192		cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
 193	else
 194		cmd->base.eth_tp_mdix_ctrl = hw->phy.mdix;
 195
 196	if (hw->phy.media_type != e1000_media_type_copper)
 197		cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
 198
 199	lpa_t = mii_stat1000_to_ethtool_lpa_t(adapter->phy_regs.stat1000);
 200	lp_advertising = lpa_t |
 201	mii_lpa_to_ethtool_lpa_t(adapter->phy_regs.lpa);
 202
 203	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
 204						supported);
 205	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
 206						advertising);
 207	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
 208						lp_advertising);
 209
 210	return 0;
 211}
 212
 213static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
 214{
 215	struct e1000_mac_info *mac = &adapter->hw.mac;
 216
 217	mac->autoneg = 0;
 218
 219	/* Make sure dplx is at most 1 bit and lsb of speed is not set
 220	 * for the switch() below to work
 221	 */
 222	if ((spd & 1) || (dplx & ~1))
 223		goto err_inval;
 224
 225	/* Fiber NICs only allow 1000 gbps Full duplex */
 226	if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
 227	    (spd != SPEED_1000) && (dplx != DUPLEX_FULL)) {
 228		goto err_inval;
 229	}
 230
 231	switch (spd + dplx) {
 232	case SPEED_10 + DUPLEX_HALF:
 233		mac->forced_speed_duplex = ADVERTISE_10_HALF;
 234		break;
 235	case SPEED_10 + DUPLEX_FULL:
 236		mac->forced_speed_duplex = ADVERTISE_10_FULL;
 237		break;
 238	case SPEED_100 + DUPLEX_HALF:
 239		mac->forced_speed_duplex = ADVERTISE_100_HALF;
 240		break;
 241	case SPEED_100 + DUPLEX_FULL:
 242		mac->forced_speed_duplex = ADVERTISE_100_FULL;
 243		break;
 244	case SPEED_1000 + DUPLEX_FULL:
 245		if (adapter->hw.phy.media_type == e1000_media_type_copper) {
 246			mac->autoneg = 1;
 247			adapter->hw.phy.autoneg_advertised =
 248				ADVERTISE_1000_FULL;
 249		} else {
 250			mac->forced_speed_duplex = ADVERTISE_1000_FULL;
 251		}
 252		break;
 253	case SPEED_1000 + DUPLEX_HALF:	/* not supported */
 254	default:
 255		goto err_inval;
 256	}
 257
 258	/* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
 259	adapter->hw.phy.mdix = AUTO_ALL_MODES;
 260
 261	return 0;
 262
 263err_inval:
 264	e_err("Unsupported Speed/Duplex configuration\n");
 265	return -EINVAL;
 266}
 267
 268static int e1000_set_link_ksettings(struct net_device *netdev,
 269				    const struct ethtool_link_ksettings *cmd)
 270{
 271	struct e1000_adapter *adapter = netdev_priv(netdev);
 272	struct e1000_hw *hw = &adapter->hw;
 273	int ret_val = 0;
 274	u32 advertising;
 275
 276	ethtool_convert_link_mode_to_legacy_u32(&advertising,
 277						cmd->link_modes.advertising);
 278
 279	/* When SoL/IDER sessions are active, autoneg/speed/duplex
 280	 * cannot be changed
 281	 */
 282	if (hw->phy.ops.check_reset_block &&
 283	    hw->phy.ops.check_reset_block(hw)) {
 284		e_err("Cannot change link characteristics when SoL/IDER is active.\n");
 285		return -EINVAL;
 286	}
 287
 288	/* MDI setting is only allowed when autoneg enabled because
 289	 * some hardware doesn't allow MDI setting when speed or
 290	 * duplex is forced.
 291	 */
 292	if (cmd->base.eth_tp_mdix_ctrl) {
 293		if (hw->phy.media_type != e1000_media_type_copper)
 294			return -EOPNOTSUPP;
 295
 296		if ((cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
 297		    (cmd->base.autoneg != AUTONEG_ENABLE)) {
 298			e_err("forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
 299			return -EINVAL;
 300		}
 301	}
 302
 303	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
 304		usleep_range(1000, 2000);
 305
 306	if (cmd->base.autoneg == AUTONEG_ENABLE) {
 307		hw->mac.autoneg = 1;
 308		if (hw->phy.media_type == e1000_media_type_fiber)
 309			hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |
 310			    ADVERTISED_FIBRE | ADVERTISED_Autoneg;
 311		else
 312			hw->phy.autoneg_advertised = advertising |
 313			    ADVERTISED_TP | ADVERTISED_Autoneg;
 314		advertising = hw->phy.autoneg_advertised;
 315		if (adapter->fc_autoneg)
 316			hw->fc.requested_mode = e1000_fc_default;
 317	} else {
 318		u32 speed = cmd->base.speed;
 319		/* calling this overrides forced MDI setting */
 320		if (e1000_set_spd_dplx(adapter, speed, cmd->base.duplex)) {
 321			ret_val = -EINVAL;
 322			goto out;
 323		}
 324	}
 325
 326	/* MDI-X => 2; MDI => 1; Auto => 3 */
 327	if (cmd->base.eth_tp_mdix_ctrl) {
 328		/* fix up the value for auto (3 => 0) as zero is mapped
 329		 * internally to auto
 330		 */
 331		if (cmd->base.eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
 332			hw->phy.mdix = AUTO_ALL_MODES;
 333		else
 334			hw->phy.mdix = cmd->base.eth_tp_mdix_ctrl;
 335	}
 336
 337	/* reset the link */
 338	if (netif_running(adapter->netdev)) {
 339		e1000e_down(adapter, true);
 340		e1000e_up(adapter);
 341	} else {
 342		e1000e_reset(adapter);
 343	}
 344
 345out:
 346	clear_bit(__E1000_RESETTING, &adapter->state);
 347	return ret_val;
 348}
 349
 350static void e1000_get_pauseparam(struct net_device *netdev,
 351				 struct ethtool_pauseparam *pause)
 352{
 353	struct e1000_adapter *adapter = netdev_priv(netdev);
 354	struct e1000_hw *hw = &adapter->hw;
 355
 356	pause->autoneg =
 357	    (adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
 358
 359	if (hw->fc.current_mode == e1000_fc_rx_pause) {
 360		pause->rx_pause = 1;
 361	} else if (hw->fc.current_mode == e1000_fc_tx_pause) {
 362		pause->tx_pause = 1;
 363	} else if (hw->fc.current_mode == e1000_fc_full) {
 364		pause->rx_pause = 1;
 365		pause->tx_pause = 1;
 366	}
 367}
 368
 369static int e1000_set_pauseparam(struct net_device *netdev,
 370				struct ethtool_pauseparam *pause)
 371{
 372	struct e1000_adapter *adapter = netdev_priv(netdev);
 373	struct e1000_hw *hw = &adapter->hw;
 374	int retval = 0;
 375
 376	adapter->fc_autoneg = pause->autoneg;
 377
 378	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
 379		usleep_range(1000, 2000);
 380
 381	if (adapter->fc_autoneg == AUTONEG_ENABLE) {
 382		hw->fc.requested_mode = e1000_fc_default;
 383		if (netif_running(adapter->netdev)) {
 384			e1000e_down(adapter, true);
 385			e1000e_up(adapter);
 386		} else {
 387			e1000e_reset(adapter);
 388		}
 389	} else {
 390		if (pause->rx_pause && pause->tx_pause)
 391			hw->fc.requested_mode = e1000_fc_full;
 392		else if (pause->rx_pause && !pause->tx_pause)
 393			hw->fc.requested_mode = e1000_fc_rx_pause;
 394		else if (!pause->rx_pause && pause->tx_pause)
 395			hw->fc.requested_mode = e1000_fc_tx_pause;
 396		else if (!pause->rx_pause && !pause->tx_pause)
 397			hw->fc.requested_mode = e1000_fc_none;
 398
 399		hw->fc.current_mode = hw->fc.requested_mode;
 400
 401		if (hw->phy.media_type == e1000_media_type_fiber) {
 402			retval = hw->mac.ops.setup_link(hw);
 403			/* implicit goto out */
 404		} else {
 405			retval = e1000e_force_mac_fc(hw);
 406			if (retval)
 407				goto out;
 408			e1000e_set_fc_watermarks(hw);
 409		}
 410	}
 411
 412out:
 413	clear_bit(__E1000_RESETTING, &adapter->state);
 414	return retval;
 415}
 416
 417static u32 e1000_get_msglevel(struct net_device *netdev)
 418{
 419	struct e1000_adapter *adapter = netdev_priv(netdev);
 420	return adapter->msg_enable;
 421}
 422
 423static void e1000_set_msglevel(struct net_device *netdev, u32 data)
 424{
 425	struct e1000_adapter *adapter = netdev_priv(netdev);
 426	adapter->msg_enable = data;
 427}
 428
 429static int e1000_get_regs_len(struct net_device __always_unused *netdev)
 430{
 431#define E1000_REGS_LEN 32	/* overestimate */
 432	return E1000_REGS_LEN * sizeof(u32);
 433}
 434
 435static void e1000_get_regs(struct net_device *netdev,
 436			   struct ethtool_regs *regs, void *p)
 437{
 438	struct e1000_adapter *adapter = netdev_priv(netdev);
 439	struct e1000_hw *hw = &adapter->hw;
 440	u32 *regs_buff = p;
 441	u16 phy_data;
 442
 443	memset(p, 0, E1000_REGS_LEN * sizeof(u32));
 444
 445	regs->version = (1u << 24) |
 446			(adapter->pdev->revision << 16) |
 447			adapter->pdev->device;
 448
 449	regs_buff[0] = er32(CTRL);
 450	regs_buff[1] = er32(STATUS);
 451
 452	regs_buff[2] = er32(RCTL);
 453	regs_buff[3] = er32(RDLEN(0));
 454	regs_buff[4] = er32(RDH(0));
 455	regs_buff[5] = er32(RDT(0));
 456	regs_buff[6] = er32(RDTR);
 457
 458	regs_buff[7] = er32(TCTL);
 459	regs_buff[8] = er32(TDLEN(0));
 460	regs_buff[9] = er32(TDH(0));
 461	regs_buff[10] = er32(TDT(0));
 462	regs_buff[11] = er32(TIDV);
 463
 464	regs_buff[12] = adapter->hw.phy.type;	/* PHY type (IGP=1, M88=0) */
 465
 466	/* ethtool doesn't use anything past this point, so all this
 467	 * code is likely legacy junk for apps that may or may not exist
 468	 */
 469	if (hw->phy.type == e1000_phy_m88) {
 470		e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
 471		regs_buff[13] = (u32)phy_data; /* cable length */
 472		regs_buff[14] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
 473		regs_buff[15] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
 474		regs_buff[16] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
 475		e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
 476		regs_buff[17] = (u32)phy_data; /* extended 10bt distance */
 477		regs_buff[18] = regs_buff[13]; /* cable polarity */
 478		regs_buff[19] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
 479		regs_buff[20] = regs_buff[17]; /* polarity correction */
 480		/* phy receive errors */
 481		regs_buff[22] = adapter->phy_stats.receive_errors;
 482		regs_buff[23] = regs_buff[13]; /* mdix mode */
 483	}
 484	regs_buff[21] = 0;	/* was idle_errors */
 485	e1e_rphy(hw, MII_STAT1000, &phy_data);
 486	regs_buff[24] = (u32)phy_data;	/* phy local receiver status */
 487	regs_buff[25] = regs_buff[24];	/* phy remote receiver status */
 488}
 489
 490static int e1000_get_eeprom_len(struct net_device *netdev)
 491{
 492	struct e1000_adapter *adapter = netdev_priv(netdev);
 493	return adapter->hw.nvm.word_size * 2;
 494}
 495
 496static int e1000_get_eeprom(struct net_device *netdev,
 497			    struct ethtool_eeprom *eeprom, u8 *bytes)
 498{
 499	struct e1000_adapter *adapter = netdev_priv(netdev);
 500	struct e1000_hw *hw = &adapter->hw;
 501	u16 *eeprom_buff;
 502	int first_word;
 503	int last_word;
 504	int ret_val = 0;
 505	u16 i;
 506
 507	if (eeprom->len == 0)
 508		return -EINVAL;
 509
 510	eeprom->magic = adapter->pdev->vendor | (adapter->pdev->device << 16);
 511
 512	first_word = eeprom->offset >> 1;
 513	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
 514
 515	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
 516				    GFP_KERNEL);
 517	if (!eeprom_buff)
 518		return -ENOMEM;
 519
 520	if (hw->nvm.type == e1000_nvm_eeprom_spi) {
 521		ret_val = e1000_read_nvm(hw, first_word,
 522					 last_word - first_word + 1,
 523					 eeprom_buff);
 524	} else {
 525		for (i = 0; i < last_word - first_word + 1; i++) {
 526			ret_val = e1000_read_nvm(hw, first_word + i, 1,
 527						 &eeprom_buff[i]);
 528			if (ret_val)
 529				break;
 530		}
 531	}
 532
 533	if (ret_val) {
 534		/* a read error occurred, throw away the result */
 535		memset(eeprom_buff, 0xff, sizeof(u16) *
 536		       (last_word - first_word + 1));
 537	} else {
 538		/* Device's eeprom is always little-endian, word addressable */
 539		for (i = 0; i < last_word - first_word + 1; i++)
 540			le16_to_cpus(&eeprom_buff[i]);
 541	}
 542
 543	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
 544	kfree(eeprom_buff);
 545
 546	return ret_val;
 547}
 548
 549static int e1000_set_eeprom(struct net_device *netdev,
 550			    struct ethtool_eeprom *eeprom, u8 *bytes)
 551{
 552	struct e1000_adapter *adapter = netdev_priv(netdev);
 553	struct e1000_hw *hw = &adapter->hw;
 554	u16 *eeprom_buff;
 555	int ret_val = 0;
 556	size_t max_len;
 557	int first_word;
 558	int last_word;
 559	void *ptr;
 560	u16 i;
 561
 562	if (eeprom->len == 0)
 563		return -EOPNOTSUPP;
 564
 565	if (eeprom->magic !=
 566	    (adapter->pdev->vendor | (adapter->pdev->device << 16)))
 567		return -EFAULT;
 568
 569	if (adapter->flags & FLAG_READ_ONLY_NVM)
 570		return -EINVAL;
 571
 572	max_len = hw->nvm.word_size * 2;
 573
 574	first_word = eeprom->offset >> 1;
 575	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
 576	eeprom_buff = kmalloc(max_len, GFP_KERNEL);
 577	if (!eeprom_buff)
 578		return -ENOMEM;
 579
 580	ptr = (void *)eeprom_buff;
 581
 582	if (eeprom->offset & 1) {
 583		/* need read/modify/write of first changed EEPROM word */
 584		/* only the second byte of the word is being modified */
 585		ret_val = e1000_read_nvm(hw, first_word, 1, &eeprom_buff[0]);
 586		ptr++;
 587	}
 588	if (((eeprom->offset + eeprom->len) & 1) && (!ret_val))
 589		/* need read/modify/write of last changed EEPROM word */
 590		/* only the first byte of the word is being modified */
 591		ret_val = e1000_read_nvm(hw, last_word, 1,
 592					 &eeprom_buff[last_word - first_word]);
 593
 594	if (ret_val)
 595		goto out;
 596
 597	/* Device's eeprom is always little-endian, word addressable */
 598	for (i = 0; i < last_word - first_word + 1; i++)
 599		le16_to_cpus(&eeprom_buff[i]);
 600
 601	memcpy(ptr, bytes, eeprom->len);
 602
 603	for (i = 0; i < last_word - first_word + 1; i++)
 604		cpu_to_le16s(&eeprom_buff[i]);
 605
 606	ret_val = e1000_write_nvm(hw, first_word,
 607				  last_word - first_word + 1, eeprom_buff);
 608
 609	if (ret_val)
 610		goto out;
 611
 612	/* Update the checksum over the first part of the EEPROM if needed
 613	 * and flush shadow RAM for applicable controllers
 614	 */
 615	if ((first_word <= NVM_CHECKSUM_REG) ||
 616	    (hw->mac.type == e1000_82583) ||
 617	    (hw->mac.type == e1000_82574) ||
 618	    (hw->mac.type == e1000_82573))
 619		ret_val = e1000e_update_nvm_checksum(hw);
 620
 621out:
 622	kfree(eeprom_buff);
 623	return ret_val;
 624}
 625
 626static void e1000_get_drvinfo(struct net_device *netdev,
 627			      struct ethtool_drvinfo *drvinfo)
 628{
 629	struct e1000_adapter *adapter = netdev_priv(netdev);
 630
 631	strscpy(drvinfo->driver, e1000e_driver_name, sizeof(drvinfo->driver));
 632
 633	/* EEPROM image version # is reported as firmware version # for
 634	 * PCI-E controllers
 635	 */
 636	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 637		 "%d.%d-%d",
 638		 FIELD_GET(0xF000, adapter->eeprom_vers),
 639		 FIELD_GET(0x0FF0, adapter->eeprom_vers),
 640		 (adapter->eeprom_vers & 0x000F));
 641
 642	strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
 643		sizeof(drvinfo->bus_info));
 644}
 645
 646static void e1000_get_ringparam(struct net_device *netdev,
 647				struct ethtool_ringparam *ring,
 648				struct kernel_ethtool_ringparam *kernel_ring,
 649				struct netlink_ext_ack *extack)
 650{
 651	struct e1000_adapter *adapter = netdev_priv(netdev);
 652
 653	ring->rx_max_pending = E1000_MAX_RXD;
 654	ring->tx_max_pending = E1000_MAX_TXD;
 655	ring->rx_pending = adapter->rx_ring_count;
 656	ring->tx_pending = adapter->tx_ring_count;
 657}
 658
 659static int e1000_set_ringparam(struct net_device *netdev,
 660			       struct ethtool_ringparam *ring,
 661			       struct kernel_ethtool_ringparam *kernel_ring,
 662			       struct netlink_ext_ack *extack)
 663{
 664	struct e1000_adapter *adapter = netdev_priv(netdev);
 665	struct e1000_ring *temp_tx = NULL, *temp_rx = NULL;
 666	int err = 0, size = sizeof(struct e1000_ring);
 667	bool set_tx = false, set_rx = false;
 668	u16 new_rx_count, new_tx_count;
 669
 670	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 671		return -EINVAL;
 672
 673	new_rx_count = clamp_t(u32, ring->rx_pending, E1000_MIN_RXD,
 674			       E1000_MAX_RXD);
 675	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
 676
 677	new_tx_count = clamp_t(u32, ring->tx_pending, E1000_MIN_TXD,
 678			       E1000_MAX_TXD);
 679	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
 680
 681	if ((new_tx_count == adapter->tx_ring_count) &&
 682	    (new_rx_count == adapter->rx_ring_count))
 683		/* nothing to do */
 684		return 0;
 685
 686	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
 687		usleep_range(1000, 2000);
 688
 689	if (!netif_running(adapter->netdev)) {
 690		/* Set counts now and allocate resources during open() */
 691		adapter->tx_ring->count = new_tx_count;
 692		adapter->rx_ring->count = new_rx_count;
 693		adapter->tx_ring_count = new_tx_count;
 694		adapter->rx_ring_count = new_rx_count;
 695		goto clear_reset;
 696	}
 697
 698	set_tx = (new_tx_count != adapter->tx_ring_count);
 699	set_rx = (new_rx_count != adapter->rx_ring_count);
 700
 701	/* Allocate temporary storage for ring updates */
 702	if (set_tx) {
 703		temp_tx = vmalloc(size);
 704		if (!temp_tx) {
 705			err = -ENOMEM;
 706			goto free_temp;
 707		}
 708	}
 709	if (set_rx) {
 710		temp_rx = vmalloc(size);
 711		if (!temp_rx) {
 712			err = -ENOMEM;
 713			goto free_temp;
 714		}
 715	}
 716
 717	e1000e_down(adapter, true);
 718
 719	/* We can't just free everything and then setup again, because the
 720	 * ISRs in MSI-X mode get passed pointers to the Tx and Rx ring
 721	 * structs.  First, attempt to allocate new resources...
 722	 */
 723	if (set_tx) {
 724		memcpy(temp_tx, adapter->tx_ring, size);
 725		temp_tx->count = new_tx_count;
 726		err = e1000e_setup_tx_resources(temp_tx);
 727		if (err)
 728			goto err_setup;
 729	}
 730	if (set_rx) {
 731		memcpy(temp_rx, adapter->rx_ring, size);
 732		temp_rx->count = new_rx_count;
 733		err = e1000e_setup_rx_resources(temp_rx);
 734		if (err)
 735			goto err_setup_rx;
 736	}
 737
 738	/* ...then free the old resources and copy back any new ring data */
 739	if (set_tx) {
 740		e1000e_free_tx_resources(adapter->tx_ring);
 741		memcpy(adapter->tx_ring, temp_tx, size);
 742		adapter->tx_ring_count = new_tx_count;
 743	}
 744	if (set_rx) {
 745		e1000e_free_rx_resources(adapter->rx_ring);
 746		memcpy(adapter->rx_ring, temp_rx, size);
 747		adapter->rx_ring_count = new_rx_count;
 748	}
 749
 750err_setup_rx:
 751	if (err && set_tx)
 752		e1000e_free_tx_resources(temp_tx);
 753err_setup:
 754	e1000e_up(adapter);
 755free_temp:
 756	vfree(temp_tx);
 757	vfree(temp_rx);
 758clear_reset:
 759	clear_bit(__E1000_RESETTING, &adapter->state);
 760	return err;
 761}
 762
 763static bool reg_pattern_test(struct e1000_adapter *adapter, u64 *data,
 764			     int reg, int offset, u32 mask, u32 write)
 765{
 766	u32 pat, val;
 767	static const u32 test[] = {
 768		0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
 769	};
 770	for (pat = 0; pat < ARRAY_SIZE(test); pat++) {
 771		E1000_WRITE_REG_ARRAY(&adapter->hw, reg, offset,
 772				      (test[pat] & write));
 773		val = E1000_READ_REG_ARRAY(&adapter->hw, reg, offset);
 774		if (val != (test[pat] & write & mask)) {
 775			e_err("pattern test failed (reg 0x%05X): got 0x%08X expected 0x%08X\n",
 776			      reg + (offset << 2), val,
 777			      (test[pat] & write & mask));
 778			*data = reg;
 779			return true;
 780		}
 781	}
 782	return false;
 783}
 784
 785static bool reg_set_and_check(struct e1000_adapter *adapter, u64 *data,
 786			      int reg, u32 mask, u32 write)
 787{
 788	u32 val;
 789
 790	__ew32(&adapter->hw, reg, write & mask);
 791	val = __er32(&adapter->hw, reg);
 792	if ((write & mask) != (val & mask)) {
 793		e_err("set/check test failed (reg 0x%05X): got 0x%08X expected 0x%08X\n",
 794		      reg, (val & mask), (write & mask));
 795		*data = reg;
 796		return true;
 797	}
 798	return false;
 799}
 800
 801#define REG_PATTERN_TEST_ARRAY(reg, offset, mask, write)                       \
 802	do {                                                                   \
 803		if (reg_pattern_test(adapter, data, reg, offset, mask, write)) \
 804			return 1;                                              \
 805	} while (0)
 806#define REG_PATTERN_TEST(reg, mask, write)                                     \
 807	REG_PATTERN_TEST_ARRAY(reg, 0, mask, write)
 808
 809#define REG_SET_AND_CHECK(reg, mask, write)                                    \
 810	do {                                                                   \
 811		if (reg_set_and_check(adapter, data, reg, mask, write))        \
 812			return 1;                                              \
 813	} while (0)
 814
 815static int e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
 816{
 817	struct e1000_hw *hw = &adapter->hw;
 818	struct e1000_mac_info *mac = &adapter->hw.mac;
 819	u32 value;
 820	u32 before;
 821	u32 after;
 822	u32 i;
 823	u32 toggle;
 824	u32 mask;
 825	u32 wlock_mac = 0;
 826
 827	/* The status register is Read Only, so a write should fail.
 828	 * Some bits that get toggled are ignored.  There are several bits
 829	 * on newer hardware that are r/w.
 830	 */
 831	switch (mac->type) {
 832	case e1000_82571:
 833	case e1000_82572:
 834	case e1000_80003es2lan:
 835		toggle = 0x7FFFF3FF;
 836		break;
 837	default:
 838		toggle = 0x7FFFF033;
 839		break;
 840	}
 841
 842	before = er32(STATUS);
 843	value = (er32(STATUS) & toggle);
 844	ew32(STATUS, toggle);
 845	after = er32(STATUS) & toggle;
 846	if (value != after) {
 847		e_err("failed STATUS register test got: 0x%08X expected: 0x%08X\n",
 848		      after, value);
 849		*data = 1;
 850		return 1;
 851	}
 852	/* restore previous status */
 853	ew32(STATUS, before);
 854
 855	if (!(adapter->flags & FLAG_IS_ICH)) {
 856		REG_PATTERN_TEST(E1000_FCAL, 0xFFFFFFFF, 0xFFFFFFFF);
 857		REG_PATTERN_TEST(E1000_FCAH, 0x0000FFFF, 0xFFFFFFFF);
 858		REG_PATTERN_TEST(E1000_FCT, 0x0000FFFF, 0xFFFFFFFF);
 859		REG_PATTERN_TEST(E1000_VET, 0x0000FFFF, 0xFFFFFFFF);
 860	}
 861
 862	REG_PATTERN_TEST(E1000_RDTR, 0x0000FFFF, 0xFFFFFFFF);
 863	REG_PATTERN_TEST(E1000_RDBAH(0), 0xFFFFFFFF, 0xFFFFFFFF);
 864	REG_PATTERN_TEST(E1000_RDLEN(0), 0x000FFF80, 0x000FFFFF);
 865	REG_PATTERN_TEST(E1000_RDH(0), 0x0000FFFF, 0x0000FFFF);
 866	REG_PATTERN_TEST(E1000_RDT(0), 0x0000FFFF, 0x0000FFFF);
 867	REG_PATTERN_TEST(E1000_FCRTH, 0x0000FFF8, 0x0000FFF8);
 868	REG_PATTERN_TEST(E1000_FCTTV, 0x0000FFFF, 0x0000FFFF);
 869	REG_PATTERN_TEST(E1000_TIPG, 0x3FFFFFFF, 0x3FFFFFFF);
 870	REG_PATTERN_TEST(E1000_TDBAH(0), 0xFFFFFFFF, 0xFFFFFFFF);
 871	REG_PATTERN_TEST(E1000_TDLEN(0), 0x000FFF80, 0x000FFFFF);
 872
 873	REG_SET_AND_CHECK(E1000_RCTL, 0xFFFFFFFF, 0x00000000);
 874
 875	before = ((adapter->flags & FLAG_IS_ICH) ? 0x06C3B33E : 0x06DFB3FE);
 876	REG_SET_AND_CHECK(E1000_RCTL, before, 0x003FFFFB);
 877	REG_SET_AND_CHECK(E1000_TCTL, 0xFFFFFFFF, 0x00000000);
 878
 879	REG_SET_AND_CHECK(E1000_RCTL, before, 0xFFFFFFFF);
 880	REG_PATTERN_TEST(E1000_RDBAL(0), 0xFFFFFFF0, 0xFFFFFFFF);
 881	if (!(adapter->flags & FLAG_IS_ICH))
 882		REG_PATTERN_TEST(E1000_TXCW, 0xC000FFFF, 0x0000FFFF);
 883	REG_PATTERN_TEST(E1000_TDBAL(0), 0xFFFFFFF0, 0xFFFFFFFF);
 884	REG_PATTERN_TEST(E1000_TIDV, 0x0000FFFF, 0x0000FFFF);
 885	mask = 0x8003FFFF;
 886	switch (mac->type) {
 887	case e1000_ich10lan:
 888	case e1000_pchlan:
 889	case e1000_pch2lan:
 890	case e1000_pch_lpt:
 891	case e1000_pch_spt:
 892	case e1000_pch_cnp:
 893	case e1000_pch_tgp:
 894	case e1000_pch_adp:
 895	case e1000_pch_mtp:
 896	case e1000_pch_lnp:
 897	case e1000_pch_ptp:
 898	case e1000_pch_nvp:
 899		mask |= BIT(18);
 900		break;
 901	default:
 902		break;
 903	}
 904
 905	if (mac->type >= e1000_pch_lpt)
 906		wlock_mac = FIELD_GET(E1000_FWSM_WLOCK_MAC_MASK, er32(FWSM));
 907
 908	for (i = 0; i < mac->rar_entry_count; i++) {
 909		if (mac->type >= e1000_pch_lpt) {
 910			/* Cannot test write-protected SHRAL[n] registers */
 911			if ((wlock_mac == 1) || (wlock_mac && (i > wlock_mac)))
 912				continue;
 913
 914			/* SHRAH[9] different than the others */
 915			if (i == 10)
 916				mask |= BIT(30);
 917			else
 918				mask &= ~BIT(30);
 919		}
 920		if (mac->type == e1000_pch2lan) {
 921			/* SHRAH[0,1,2] different than previous */
 922			if (i == 1)
 923				mask &= 0xFFF4FFFF;
 924			/* SHRAH[3] different than SHRAH[0,1,2] */
 925			if (i == 4)
 926				mask |= BIT(30);
 927			/* RAR[1-6] owned by management engine - skipping */
 928			if (i > 0)
 929				i += 6;
 930		}
 931
 932		REG_PATTERN_TEST_ARRAY(E1000_RA, ((i << 1) + 1), mask,
 933				       0xFFFFFFFF);
 934		/* reset index to actual value */
 935		if ((mac->type == e1000_pch2lan) && (i > 6))
 936			i -= 6;
 937	}
 938
 939	for (i = 0; i < mac->mta_reg_count; i++)
 940		REG_PATTERN_TEST_ARRAY(E1000_MTA, i, 0xFFFFFFFF, 0xFFFFFFFF);
 941
 942	*data = 0;
 943
 944	return 0;
 945}
 946
 947static int e1000_eeprom_test(struct e1000_adapter *adapter, u64 *data)
 948{
 949	u16 temp;
 950	u16 checksum = 0;
 951	u16 i;
 952
 953	*data = 0;
 954	/* Read and add up the contents of the EEPROM */
 955	for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
 956		if ((e1000_read_nvm(&adapter->hw, i, 1, &temp)) < 0) {
 957			*data = 1;
 958			return *data;
 959		}
 960		checksum += temp;
 961	}
 962
 963	/* If Checksum is not Correct return error else test passed */
 964	if (checksum != NVM_SUM && !(*data))
 965		*data = 2;
 966
 967	return *data;
 968}
 969
 970static irqreturn_t e1000_test_intr(int __always_unused irq, void *data)
 971{
 972	struct net_device *netdev = (struct net_device *)data;
 973	struct e1000_adapter *adapter = netdev_priv(netdev);
 974	struct e1000_hw *hw = &adapter->hw;
 975
 976	adapter->test_icr |= er32(ICR);
 977
 978	return IRQ_HANDLED;
 979}
 980
 981static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
 982{
 983	struct net_device *netdev = adapter->netdev;
 984	struct e1000_hw *hw = &adapter->hw;
 985	u32 mask;
 986	u32 shared_int = 1;
 987	u32 irq = adapter->pdev->irq;
 988	int i;
 989	int ret_val = 0;
 990	int int_mode = E1000E_INT_MODE_LEGACY;
 991
 992	*data = 0;
 993
 994	/* NOTE: we don't test MSI/MSI-X interrupts here, yet */
 995	if (adapter->int_mode == E1000E_INT_MODE_MSIX) {
 996		int_mode = adapter->int_mode;
 997		e1000e_reset_interrupt_capability(adapter);
 998		adapter->int_mode = E1000E_INT_MODE_LEGACY;
 999		e1000e_set_interrupt_capability(adapter);
1000	}
1001	/* Hook up test interrupt handler just for this test */
1002	if (!request_irq(irq, e1000_test_intr, IRQF_PROBE_SHARED, netdev->name,
1003			 netdev)) {
1004		shared_int = 0;
1005	} else if (request_irq(irq, e1000_test_intr, IRQF_SHARED, netdev->name,
1006			       netdev)) {
1007		*data = 1;
1008		ret_val = -1;
1009		goto out;
1010	}
1011	e_info("testing %s interrupt\n", (shared_int ? "shared" : "unshared"));
1012
1013	/* Disable all the interrupts */
1014	ew32(IMC, 0xFFFFFFFF);
1015	e1e_flush();
1016	usleep_range(10000, 11000);
1017
1018	/* Test each interrupt */
1019	for (i = 0; i < 10; i++) {
1020		/* Interrupt to test */
1021		mask = BIT(i);
1022
1023		if (adapter->flags & FLAG_IS_ICH) {
1024			switch (mask) {
1025			case E1000_ICR_RXSEQ:
1026				continue;
1027			case 0x00000100:
1028				if (adapter->hw.mac.type == e1000_ich8lan ||
1029				    adapter->hw.mac.type == e1000_ich9lan)
1030					continue;
1031				break;
1032			default:
1033				break;
1034			}
1035		}
1036
1037		if (!shared_int) {
1038			/* Disable the interrupt to be reported in
1039			 * the cause register and then force the same
1040			 * interrupt and see if one gets posted.  If
1041			 * an interrupt was posted to the bus, the
1042			 * test failed.
1043			 */
1044			adapter->test_icr = 0;
1045			ew32(IMC, mask);
1046			ew32(ICS, mask);
1047			e1e_flush();
1048			usleep_range(10000, 11000);
1049
1050			if (adapter->test_icr & mask) {
1051				*data = 3;
1052				break;
1053			}
1054		}
1055
1056		/* Enable the interrupt to be reported in
1057		 * the cause register and then force the same
1058		 * interrupt and see if one gets posted.  If
1059		 * an interrupt was not posted to the bus, the
1060		 * test failed.
1061		 */
1062		adapter->test_icr = 0;
1063		ew32(IMS, mask);
1064		ew32(ICS, mask);
1065		e1e_flush();
1066		usleep_range(10000, 11000);
1067
1068		if (!(adapter->test_icr & mask)) {
1069			*data = 4;
1070			break;
1071		}
1072
1073		if (!shared_int) {
1074			/* Disable the other interrupts to be reported in
1075			 * the cause register and then force the other
1076			 * interrupts and see if any get posted.  If
1077			 * an interrupt was posted to the bus, the
1078			 * test failed.
1079			 */
1080			adapter->test_icr = 0;
1081			ew32(IMC, ~mask & 0x00007FFF);
1082			ew32(ICS, ~mask & 0x00007FFF);
1083			e1e_flush();
1084			usleep_range(10000, 11000);
1085
1086			if (adapter->test_icr) {
1087				*data = 5;
1088				break;
1089			}
1090		}
1091	}
1092
1093	/* Disable all the interrupts */
1094	ew32(IMC, 0xFFFFFFFF);
1095	e1e_flush();
1096	usleep_range(10000, 11000);
1097
1098	/* Unhook test interrupt handler */
1099	free_irq(irq, netdev);
1100
1101out:
1102	if (int_mode == E1000E_INT_MODE_MSIX) {
1103		e1000e_reset_interrupt_capability(adapter);
1104		adapter->int_mode = int_mode;
1105		e1000e_set_interrupt_capability(adapter);
1106	}
1107
1108	return ret_val;
1109}
1110
1111static void e1000_free_desc_rings(struct e1000_adapter *adapter)
1112{
1113	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1114	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1115	struct pci_dev *pdev = adapter->pdev;
1116	struct e1000_buffer *buffer_info;
1117	int i;
1118
1119	if (tx_ring->desc && tx_ring->buffer_info) {
1120		for (i = 0; i < tx_ring->count; i++) {
1121			buffer_info = &tx_ring->buffer_info[i];
1122
1123			if (buffer_info->dma)
1124				dma_unmap_single(&pdev->dev,
1125						 buffer_info->dma,
1126						 buffer_info->length,
1127						 DMA_TO_DEVICE);
1128			dev_kfree_skb(buffer_info->skb);
1129		}
1130	}
1131
1132	if (rx_ring->desc && rx_ring->buffer_info) {
1133		for (i = 0; i < rx_ring->count; i++) {
1134			buffer_info = &rx_ring->buffer_info[i];
1135
1136			if (buffer_info->dma)
1137				dma_unmap_single(&pdev->dev,
1138						 buffer_info->dma,
1139						 2048, DMA_FROM_DEVICE);
1140			dev_kfree_skb(buffer_info->skb);
1141		}
1142	}
1143
1144	if (tx_ring->desc) {
1145		dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1146				  tx_ring->dma);
1147		tx_ring->desc = NULL;
1148	}
1149	if (rx_ring->desc) {
1150		dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1151				  rx_ring->dma);
1152		rx_ring->desc = NULL;
1153	}
1154
1155	kfree(tx_ring->buffer_info);
1156	tx_ring->buffer_info = NULL;
1157	kfree(rx_ring->buffer_info);
1158	rx_ring->buffer_info = NULL;
1159}
1160
1161static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
1162{
1163	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1164	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1165	struct pci_dev *pdev = adapter->pdev;
1166	struct e1000_hw *hw = &adapter->hw;
1167	u32 rctl;
1168	int i;
1169	int ret_val;
1170
1171	/* Setup Tx descriptor ring and Tx buffers */
1172
1173	if (!tx_ring->count)
1174		tx_ring->count = E1000_DEFAULT_TXD;
1175
1176	tx_ring->buffer_info = kcalloc(tx_ring->count,
1177				       sizeof(struct e1000_buffer), GFP_KERNEL);
1178	if (!tx_ring->buffer_info) {
1179		ret_val = 1;
1180		goto err_nomem;
1181	}
1182
1183	tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1184	tx_ring->size = ALIGN(tx_ring->size, 4096);
1185	tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
1186					   &tx_ring->dma, GFP_KERNEL);
1187	if (!tx_ring->desc) {
1188		ret_val = 2;
1189		goto err_nomem;
1190	}
1191	tx_ring->next_to_use = 0;
1192	tx_ring->next_to_clean = 0;
1193
1194	ew32(TDBAL(0), ((u64)tx_ring->dma & 0x00000000FFFFFFFF));
1195	ew32(TDBAH(0), ((u64)tx_ring->dma >> 32));
1196	ew32(TDLEN(0), tx_ring->count * sizeof(struct e1000_tx_desc));
1197	ew32(TDH(0), 0);
1198	ew32(TDT(0), 0);
1199	ew32(TCTL, E1000_TCTL_PSP | E1000_TCTL_EN | E1000_TCTL_MULR |
1200	     E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
1201	     E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT);
1202
1203	for (i = 0; i < tx_ring->count; i++) {
1204		struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
1205		struct sk_buff *skb;
1206		unsigned int skb_size = 1024;
1207
1208		skb = alloc_skb(skb_size, GFP_KERNEL);
1209		if (!skb) {
1210			ret_val = 3;
1211			goto err_nomem;
1212		}
1213		skb_put(skb, skb_size);
1214		tx_ring->buffer_info[i].skb = skb;
1215		tx_ring->buffer_info[i].length = skb->len;
1216		tx_ring->buffer_info[i].dma =
1217		    dma_map_single(&pdev->dev, skb->data, skb->len,
1218				   DMA_TO_DEVICE);
1219		if (dma_mapping_error(&pdev->dev,
1220				      tx_ring->buffer_info[i].dma)) {
1221			ret_val = 4;
1222			goto err_nomem;
1223		}
1224		tx_desc->buffer_addr = cpu_to_le64(tx_ring->buffer_info[i].dma);
1225		tx_desc->lower.data = cpu_to_le32(skb->len);
1226		tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
1227						   E1000_TXD_CMD_IFCS |
1228						   E1000_TXD_CMD_RS);
1229		tx_desc->upper.data = 0;
1230	}
1231
1232	/* Setup Rx descriptor ring and Rx buffers */
1233
1234	if (!rx_ring->count)
1235		rx_ring->count = E1000_DEFAULT_RXD;
1236
1237	rx_ring->buffer_info = kcalloc(rx_ring->count,
1238				       sizeof(struct e1000_buffer), GFP_KERNEL);
1239	if (!rx_ring->buffer_info) {
1240		ret_val = 5;
1241		goto err_nomem;
1242	}
1243
1244	rx_ring->size = rx_ring->count * sizeof(union e1000_rx_desc_extended);
1245	rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
1246					   &rx_ring->dma, GFP_KERNEL);
1247	if (!rx_ring->desc) {
1248		ret_val = 6;
1249		goto err_nomem;
1250	}
1251	rx_ring->next_to_use = 0;
1252	rx_ring->next_to_clean = 0;
1253
1254	rctl = er32(RCTL);
1255	if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
1256		ew32(RCTL, rctl & ~E1000_RCTL_EN);
1257	ew32(RDBAL(0), ((u64)rx_ring->dma & 0xFFFFFFFF));
1258	ew32(RDBAH(0), ((u64)rx_ring->dma >> 32));
1259	ew32(RDLEN(0), rx_ring->size);
1260	ew32(RDH(0), 0);
1261	ew32(RDT(0), 0);
1262	rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
1263	    E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_LPE |
1264	    E1000_RCTL_SBP | E1000_RCTL_SECRC |
1265	    E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1266	    (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1267	ew32(RCTL, rctl);
1268
1269	for (i = 0; i < rx_ring->count; i++) {
1270		union e1000_rx_desc_extended *rx_desc;
1271		struct sk_buff *skb;
1272
1273		skb = alloc_skb(2048 + NET_IP_ALIGN, GFP_KERNEL);
1274		if (!skb) {
1275			ret_val = 7;
1276			goto err_nomem;
1277		}
1278		skb_reserve(skb, NET_IP_ALIGN);
1279		rx_ring->buffer_info[i].skb = skb;
1280		rx_ring->buffer_info[i].dma =
1281		    dma_map_single(&pdev->dev, skb->data, 2048,
1282				   DMA_FROM_DEVICE);
1283		if (dma_mapping_error(&pdev->dev,
1284				      rx_ring->buffer_info[i].dma)) {
1285			ret_val = 8;
1286			goto err_nomem;
1287		}
1288		rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1289		rx_desc->read.buffer_addr =
1290		    cpu_to_le64(rx_ring->buffer_info[i].dma);
1291		memset(skb->data, 0x00, skb->len);
1292	}
1293
1294	return 0;
1295
1296err_nomem:
1297	e1000_free_desc_rings(adapter);
1298	return ret_val;
1299}
1300
1301static void e1000_phy_disable_receiver(struct e1000_adapter *adapter)
1302{
1303	/* Write out to PHY registers 29 and 30 to disable the Receiver. */
1304	e1e_wphy(&adapter->hw, 29, 0x001F);
1305	e1e_wphy(&adapter->hw, 30, 0x8FFC);
1306	e1e_wphy(&adapter->hw, 29, 0x001A);
1307	e1e_wphy(&adapter->hw, 30, 0x8FF0);
1308}
1309
1310static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
1311{
1312	struct e1000_hw *hw = &adapter->hw;
1313	u32 ctrl_reg = 0;
1314	u16 phy_reg = 0;
1315	s32 ret_val = 0;
1316
1317	hw->mac.autoneg = 0;
1318
1319	if (hw->phy.type == e1000_phy_ife) {
1320		/* force 100, set loopback */
1321		e1e_wphy(hw, MII_BMCR, 0x6100);
1322
1323		/* Now set up the MAC to the same speed/duplex as the PHY. */
1324		ctrl_reg = er32(CTRL);
1325		ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1326		ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1327			     E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1328			     E1000_CTRL_SPD_100 |/* Force Speed to 100 */
1329			     E1000_CTRL_FD);	 /* Force Duplex to FULL */
1330
1331		ew32(CTRL, ctrl_reg);
1332		e1e_flush();
1333		usleep_range(500, 1000);
1334
1335		return 0;
1336	}
1337
1338	/* Specific PHY configuration for loopback */
1339	switch (hw->phy.type) {
1340	case e1000_phy_m88:
1341		/* Auto-MDI/MDIX Off */
1342		e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
1343		/* reset to update Auto-MDI/MDIX */
1344		e1e_wphy(hw, MII_BMCR, 0x9140);
1345		/* autoneg off */
1346		e1e_wphy(hw, MII_BMCR, 0x8140);
1347		break;
1348	case e1000_phy_gg82563:
1349		e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x1CC);
1350		break;
1351	case e1000_phy_bm:
1352		/* Set Default MAC Interface speed to 1GB */
1353		e1e_rphy(hw, PHY_REG(2, 21), &phy_reg);
1354		phy_reg &= ~0x0007;
1355		phy_reg |= 0x006;
1356		e1e_wphy(hw, PHY_REG(2, 21), phy_reg);
1357		/* Assert SW reset for above settings to take effect */
1358		hw->phy.ops.commit(hw);
1359		usleep_range(1000, 2000);
1360		/* Force Full Duplex */
1361		e1e_rphy(hw, PHY_REG(769, 16), &phy_reg);
1362		e1e_wphy(hw, PHY_REG(769, 16), phy_reg | 0x000C);
1363		/* Set Link Up (in force link) */
1364		e1e_rphy(hw, PHY_REG(776, 16), &phy_reg);
1365		e1e_wphy(hw, PHY_REG(776, 16), phy_reg | 0x0040);
1366		/* Force Link */
1367		e1e_rphy(hw, PHY_REG(769, 16), &phy_reg);
1368		e1e_wphy(hw, PHY_REG(769, 16), phy_reg | 0x0040);
1369		/* Set Early Link Enable */
1370		e1e_rphy(hw, PHY_REG(769, 20), &phy_reg);
1371		e1e_wphy(hw, PHY_REG(769, 20), phy_reg | 0x0400);
1372		break;
1373	case e1000_phy_82577:
1374	case e1000_phy_82578:
1375		/* Workaround: K1 must be disabled for stable 1Gbps operation */
1376		ret_val = hw->phy.ops.acquire(hw);
1377		if (ret_val) {
1378			e_err("Cannot setup 1Gbps loopback.\n");
1379			return ret_val;
1380		}
1381		e1000_configure_k1_ich8lan(hw, false);
1382		hw->phy.ops.release(hw);
1383		break;
1384	case e1000_phy_82579:
1385		/* Disable PHY energy detect power down */
1386		e1e_rphy(hw, PHY_REG(0, 21), &phy_reg);
1387		e1e_wphy(hw, PHY_REG(0, 21), phy_reg & ~BIT(3));
1388		/* Disable full chip energy detect */
1389		e1e_rphy(hw, PHY_REG(776, 18), &phy_reg);
1390		e1e_wphy(hw, PHY_REG(776, 18), phy_reg | 1);
1391		/* Enable loopback on the PHY */
1392		e1e_wphy(hw, I82577_PHY_LBK_CTRL, 0x8001);
1393		break;
1394	default:
1395		break;
1396	}
1397
1398	/* force 1000, set loopback */
1399	e1e_wphy(hw, MII_BMCR, 0x4140);
1400	msleep(250);
1401
1402	/* Now set up the MAC to the same speed/duplex as the PHY. */
1403	ctrl_reg = er32(CTRL);
1404	ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1405	ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1406		     E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1407		     E1000_CTRL_SPD_1000 |/* Force Speed to 1000 */
1408		     E1000_CTRL_FD);	 /* Force Duplex to FULL */
1409
1410	if (adapter->flags & FLAG_IS_ICH)
1411		ctrl_reg |= E1000_CTRL_SLU;	/* Set Link Up */
1412
1413	if (hw->phy.media_type == e1000_media_type_copper &&
1414	    hw->phy.type == e1000_phy_m88) {
1415		ctrl_reg |= E1000_CTRL_ILOS;	/* Invert Loss of Signal */
1416	} else {
1417		/* Set the ILOS bit on the fiber Nic if half duplex link is
1418		 * detected.
1419		 */
1420		if ((er32(STATUS) & E1000_STATUS_FD) == 0)
1421			ctrl_reg |= (E1000_CTRL_ILOS | E1000_CTRL_SLU);
1422	}
1423
1424	ew32(CTRL, ctrl_reg);
1425
1426	/* Disable the receiver on the PHY so when a cable is plugged in, the
1427	 * PHY does not begin to autoneg when a cable is reconnected to the NIC.
1428	 */
1429	if (hw->phy.type == e1000_phy_m88)
1430		e1000_phy_disable_receiver(adapter);
1431
1432	usleep_range(500, 1000);
1433
1434	return 0;
1435}
1436
1437static int e1000_set_82571_fiber_loopback(struct e1000_adapter *adapter)
1438{
1439	struct e1000_hw *hw = &adapter->hw;
1440	u32 ctrl = er32(CTRL);
1441	int link;
1442
1443	/* special requirements for 82571/82572 fiber adapters */
1444
1445	/* jump through hoops to make sure link is up because serdes
1446	 * link is hardwired up
1447	 */
1448	ctrl |= E1000_CTRL_SLU;
1449	ew32(CTRL, ctrl);
1450
1451	/* disable autoneg */
1452	ctrl = er32(TXCW);
1453	ctrl &= ~BIT(31);
1454	ew32(TXCW, ctrl);
1455
1456	link = (er32(STATUS) & E1000_STATUS_LU);
1457
1458	if (!link) {
1459		/* set invert loss of signal */
1460		ctrl = er32(CTRL);
1461		ctrl |= E1000_CTRL_ILOS;
1462		ew32(CTRL, ctrl);
1463	}
1464
1465	/* special write to serdes control register to enable SerDes analog
1466	 * loopback
1467	 */
1468	ew32(SCTL, E1000_SCTL_ENABLE_SERDES_LOOPBACK);
1469	e1e_flush();
1470	usleep_range(10000, 11000);
1471
1472	return 0;
1473}
1474
1475/* only call this for fiber/serdes connections to es2lan */
1476static int e1000_set_es2lan_mac_loopback(struct e1000_adapter *adapter)
1477{
1478	struct e1000_hw *hw = &adapter->hw;
1479	u32 ctrlext = er32(CTRL_EXT);
1480	u32 ctrl = er32(CTRL);
1481
1482	/* save CTRL_EXT to restore later, reuse an empty variable (unused
1483	 * on mac_type 80003es2lan)
1484	 */
1485	adapter->tx_fifo_head = ctrlext;
1486
1487	/* clear the serdes mode bits, putting the device into mac loopback */
1488	ctrlext &= ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1489	ew32(CTRL_EXT, ctrlext);
1490
1491	/* force speed to 1000/FD, link up */
1492	ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1493	ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX |
1494		 E1000_CTRL_SPD_1000 | E1000_CTRL_FD);
1495	ew32(CTRL, ctrl);
1496
1497	/* set mac loopback */
1498	ctrl = er32(RCTL);
1499	ctrl |= E1000_RCTL_LBM_MAC;
1500	ew32(RCTL, ctrl);
1501
1502	/* set testing mode parameters (no need to reset later) */
1503#define KMRNCTRLSTA_OPMODE (0x1F << 16)
1504#define KMRNCTRLSTA_OPMODE_1GB_FD_GMII 0x0582
1505	ew32(KMRNCTRLSTA,
1506	     (KMRNCTRLSTA_OPMODE | KMRNCTRLSTA_OPMODE_1GB_FD_GMII));
1507
1508	return 0;
1509}
1510
1511static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
1512{
1513	struct e1000_hw *hw = &adapter->hw;
1514	u32 rctl, fext_nvm11, tarc0;
1515
1516	if (hw->mac.type >= e1000_pch_spt) {
1517		fext_nvm11 = er32(FEXTNVM11);
1518		fext_nvm11 |= E1000_FEXTNVM11_DISABLE_MULR_FIX;
1519		ew32(FEXTNVM11, fext_nvm11);
1520		tarc0 = er32(TARC(0));
1521		/* clear bits 28 & 29 (control of MULR concurrent requests) */
1522		tarc0 &= 0xcfffffff;
1523		/* set bit 29 (value of MULR requests is now 2) */
1524		tarc0 |= 0x20000000;
1525		ew32(TARC(0), tarc0);
1526	}
1527	if (hw->phy.media_type == e1000_media_type_fiber ||
1528	    hw->phy.media_type == e1000_media_type_internal_serdes) {
1529		switch (hw->mac.type) {
1530		case e1000_80003es2lan:
1531			return e1000_set_es2lan_mac_loopback(adapter);
1532		case e1000_82571:
1533		case e1000_82572:
1534			return e1000_set_82571_fiber_loopback(adapter);
1535		default:
1536			rctl = er32(RCTL);
1537			rctl |= E1000_RCTL_LBM_TCVR;
1538			ew32(RCTL, rctl);
1539			return 0;
1540		}
1541	} else if (hw->phy.media_type == e1000_media_type_copper) {
1542		return e1000_integrated_phy_loopback(adapter);
1543	}
1544
1545	return 7;
1546}
1547
1548static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
1549{
1550	struct e1000_hw *hw = &adapter->hw;
1551	u32 rctl, fext_nvm11, tarc0;
1552	u16 phy_reg;
1553
1554	rctl = er32(RCTL);
1555	rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
1556	ew32(RCTL, rctl);
1557
1558	switch (hw->mac.type) {
1559	case e1000_pch_spt:
1560	case e1000_pch_cnp:
1561	case e1000_pch_tgp:
1562	case e1000_pch_adp:
1563	case e1000_pch_mtp:
1564	case e1000_pch_lnp:
1565	case e1000_pch_ptp:
1566	case e1000_pch_nvp:
1567		fext_nvm11 = er32(FEXTNVM11);
1568		fext_nvm11 &= ~E1000_FEXTNVM11_DISABLE_MULR_FIX;
1569		ew32(FEXTNVM11, fext_nvm11);
1570		tarc0 = er32(TARC(0));
1571		/* clear bits 28 & 29 (control of MULR concurrent requests) */
1572		/* set bit 29 (value of MULR requests is now 0) */
1573		tarc0 &= 0xcfffffff;
1574		ew32(TARC(0), tarc0);
1575		fallthrough;
1576	case e1000_80003es2lan:
1577		if (hw->phy.media_type == e1000_media_type_fiber ||
1578		    hw->phy.media_type == e1000_media_type_internal_serdes) {
1579			/* restore CTRL_EXT, stealing space from tx_fifo_head */
1580			ew32(CTRL_EXT, adapter->tx_fifo_head);
1581			adapter->tx_fifo_head = 0;
1582		}
1583		fallthrough;
1584	case e1000_82571:
1585	case e1000_82572:
1586		if (hw->phy.media_type == e1000_media_type_fiber ||
1587		    hw->phy.media_type == e1000_media_type_internal_serdes) {
1588			ew32(SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1589			e1e_flush();
1590			usleep_range(10000, 11000);
1591			break;
1592		}
1593		fallthrough;
1594	default:
1595		hw->mac.autoneg = 1;
1596		if (hw->phy.type == e1000_phy_gg82563)
1597			e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x180);
1598		e1e_rphy(hw, MII_BMCR, &phy_reg);
1599		if (phy_reg & BMCR_LOOPBACK) {
1600			phy_reg &= ~BMCR_LOOPBACK;
1601			e1e_wphy(hw, MII_BMCR, phy_reg);
1602			if (hw->phy.ops.commit)
1603				hw->phy.ops.commit(hw);
1604		}
1605		break;
1606	}
1607}
1608
1609static void e1000_create_lbtest_frame(struct sk_buff *skb,
1610				      unsigned int frame_size)
1611{
1612	memset(skb->data, 0xFF, frame_size);
1613	frame_size &= ~1;
1614	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
1615	skb->data[frame_size / 2 + 10] = 0xBE;
1616	skb->data[frame_size / 2 + 12] = 0xAF;
1617}
1618
1619static int e1000_check_lbtest_frame(struct sk_buff *skb,
1620				    unsigned int frame_size)
1621{
1622	frame_size &= ~1;
1623	if (*(skb->data + 3) == 0xFF)
1624		if ((*(skb->data + frame_size / 2 + 10) == 0xBE) &&
1625		    (*(skb->data + frame_size / 2 + 12) == 0xAF))
1626			return 0;
1627	return 13;
1628}
1629
1630static int e1000_run_loopback_test(struct e1000_adapter *adapter)
1631{
1632	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1633	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1634	struct pci_dev *pdev = adapter->pdev;
1635	struct e1000_hw *hw = &adapter->hw;
1636	struct e1000_buffer *buffer_info;
1637	int i, j, k, l;
1638	int lc;
1639	int good_cnt;
1640	int ret_val = 0;
1641	unsigned long time;
1642
1643	ew32(RDT(0), rx_ring->count - 1);
1644
1645	/* Calculate the loop count based on the largest descriptor ring
1646	 * The idea is to wrap the largest ring a number of times using 64
1647	 * send/receive pairs during each loop
1648	 */
1649
1650	if (rx_ring->count <= tx_ring->count)
1651		lc = ((tx_ring->count / 64) * 2) + 1;
1652	else
1653		lc = ((rx_ring->count / 64) * 2) + 1;
1654
1655	k = 0;
1656	l = 0;
1657	/* loop count loop */
1658	for (j = 0; j <= lc; j++) {
1659		/* send the packets */
1660		for (i = 0; i < 64; i++) {
1661			buffer_info = &tx_ring->buffer_info[k];
1662
1663			e1000_create_lbtest_frame(buffer_info->skb, 1024);
1664			dma_sync_single_for_device(&pdev->dev,
1665						   buffer_info->dma,
1666						   buffer_info->length,
1667						   DMA_TO_DEVICE);
1668			k++;
1669			if (k == tx_ring->count)
1670				k = 0;
1671		}
1672		ew32(TDT(0), k);
1673		e1e_flush();
1674		msleep(200);
1675		time = jiffies;	/* set the start time for the receive */
1676		good_cnt = 0;
1677		/* receive the sent packets */
1678		do {
1679			buffer_info = &rx_ring->buffer_info[l];
1680
1681			dma_sync_single_for_cpu(&pdev->dev,
1682						buffer_info->dma, 2048,
1683						DMA_FROM_DEVICE);
1684
1685			ret_val = e1000_check_lbtest_frame(buffer_info->skb,
1686							   1024);
1687			if (!ret_val)
1688				good_cnt++;
1689			l++;
1690			if (l == rx_ring->count)
1691				l = 0;
1692			/* time + 20 msecs (200 msecs on 2.4) is more than
1693			 * enough time to complete the receives, if it's
1694			 * exceeded, break and error off
1695			 */
1696		} while ((good_cnt < 64) && !time_after(jiffies, time + 20));
1697		if (good_cnt != 64) {
1698			ret_val = 13;	/* ret_val is the same as mis-compare */
1699			break;
1700		}
1701		if (time_after(jiffies, time + 20)) {
1702			ret_val = 14;	/* error code for time out error */
1703			break;
1704		}
1705	}
1706	return ret_val;
1707}
1708
1709static int e1000_loopback_test(struct e1000_adapter *adapter, u64 *data)
1710{
1711	struct e1000_hw *hw = &adapter->hw;
1712
1713	/* PHY loopback cannot be performed if SoL/IDER sessions are active */
1714	if (hw->phy.ops.check_reset_block &&
1715	    hw->phy.ops.check_reset_block(hw)) {
1716		e_err("Cannot do PHY loopback test when SoL/IDER is active.\n");
1717		*data = 0;
1718		goto out;
1719	}
1720
1721	*data = e1000_setup_desc_rings(adapter);
1722	if (*data)
1723		goto out;
1724
1725	*data = e1000_setup_loopback_test(adapter);
1726	if (*data)
1727		goto err_loopback;
1728
1729	*data = e1000_run_loopback_test(adapter);
1730	e1000_loopback_cleanup(adapter);
1731
1732err_loopback:
1733	e1000_free_desc_rings(adapter);
1734out:
1735	return *data;
1736}
1737
1738static int e1000_link_test(struct e1000_adapter *adapter, u64 *data)
1739{
1740	struct e1000_hw *hw = &adapter->hw;
1741
1742	*data = 0;
1743	if (hw->phy.media_type == e1000_media_type_internal_serdes) {
1744		int i = 0;
1745
1746		hw->mac.serdes_has_link = false;
1747
1748		/* On some blade server designs, link establishment
1749		 * could take as long as 2-3 minutes
1750		 */
1751		do {
1752			hw->mac.ops.check_for_link(hw);
1753			if (hw->mac.serdes_has_link)
1754				return *data;
1755			msleep(20);
1756		} while (i++ < 3750);
1757
1758		*data = 1;
1759	} else {
1760		hw->mac.ops.check_for_link(hw);
1761		if (hw->mac.autoneg)
1762			/* On some Phy/switch combinations, link establishment
1763			 * can take a few seconds more than expected.
1764			 */
1765			msleep_interruptible(5000);
1766
1767		if (!(er32(STATUS) & E1000_STATUS_LU))
1768			*data = 1;
1769	}
1770	return *data;
1771}
1772
1773static int e1000e_get_sset_count(struct net_device __always_unused *netdev,
1774				 int sset)
1775{
1776	switch (sset) {
1777	case ETH_SS_TEST:
1778		return E1000_TEST_LEN;
1779	case ETH_SS_STATS:
1780		return E1000_STATS_LEN;
1781	case ETH_SS_PRIV_FLAGS:
1782		return E1000E_PRIV_FLAGS_STR_LEN;
1783	default:
1784		return -EOPNOTSUPP;
1785	}
1786}
1787
1788static void e1000_diag_test(struct net_device *netdev,
1789			    struct ethtool_test *eth_test, u64 *data)
1790{
1791	struct e1000_adapter *adapter = netdev_priv(netdev);
1792	u16 autoneg_advertised;
1793	u8 forced_speed_duplex;
1794	u8 autoneg;
1795	bool if_running = netif_running(netdev);
1796
1797	set_bit(__E1000_TESTING, &adapter->state);
1798
1799	if (!if_running) {
1800		/* Get control of and reset hardware */
1801		if (adapter->flags & FLAG_HAS_AMT)
1802			e1000e_get_hw_control(adapter);
1803
1804		e1000e_power_up_phy(adapter);
1805
1806		adapter->hw.phy.autoneg_wait_to_complete = 1;
1807		e1000e_reset(adapter);
1808		adapter->hw.phy.autoneg_wait_to_complete = 0;
1809	}
1810
1811	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1812		/* Offline tests */
1813
1814		/* save speed, duplex, autoneg settings */
1815		autoneg_advertised = adapter->hw.phy.autoneg_advertised;
1816		forced_speed_duplex = adapter->hw.mac.forced_speed_duplex;
1817		autoneg = adapter->hw.mac.autoneg;
1818
1819		e_info("offline testing starting\n");
1820
1821		if (if_running)
1822			/* indicate we're in test mode */
1823			e1000e_close(netdev);
1824
1825		if (e1000_reg_test(adapter, &data[0]))
1826			eth_test->flags |= ETH_TEST_FL_FAILED;
1827
1828		e1000e_reset(adapter);
1829		if (e1000_eeprom_test(adapter, &data[1]))
1830			eth_test->flags |= ETH_TEST_FL_FAILED;
1831
1832		e1000e_reset(adapter);
1833		if (e1000_intr_test(adapter, &data[2]))
1834			eth_test->flags |= ETH_TEST_FL_FAILED;
1835
1836		e1000e_reset(adapter);
1837		if (e1000_loopback_test(adapter, &data[3]))
1838			eth_test->flags |= ETH_TEST_FL_FAILED;
1839
1840		/* force this routine to wait until autoneg complete/timeout */
1841		adapter->hw.phy.autoneg_wait_to_complete = 1;
1842		e1000e_reset(adapter);
1843		adapter->hw.phy.autoneg_wait_to_complete = 0;
1844
1845		if (e1000_link_test(adapter, &data[4]))
1846			eth_test->flags |= ETH_TEST_FL_FAILED;
1847
1848		/* restore speed, duplex, autoneg settings */
1849		adapter->hw.phy.autoneg_advertised = autoneg_advertised;
1850		adapter->hw.mac.forced_speed_duplex = forced_speed_duplex;
1851		adapter->hw.mac.autoneg = autoneg;
1852		e1000e_reset(adapter);
1853
1854		clear_bit(__E1000_TESTING, &adapter->state);
1855		if (if_running)
1856			e1000e_open(netdev);
1857	} else {
1858		/* Online tests */
1859
1860		e_info("online testing starting\n");
1861
1862		/* register, eeprom, intr and loopback tests not run online */
1863		data[0] = 0;
1864		data[1] = 0;
1865		data[2] = 0;
1866		data[3] = 0;
1867
1868		if (e1000_link_test(adapter, &data[4]))
1869			eth_test->flags |= ETH_TEST_FL_FAILED;
1870
1871		clear_bit(__E1000_TESTING, &adapter->state);
1872	}
1873
1874	if (!if_running) {
1875		e1000e_reset(adapter);
1876
1877		if (adapter->flags & FLAG_HAS_AMT)
1878			e1000e_release_hw_control(adapter);
1879	}
1880
1881	msleep_interruptible(4 * 1000);
1882}
1883
1884static void e1000_get_wol(struct net_device *netdev,
1885			  struct ethtool_wolinfo *wol)
1886{
1887	struct e1000_adapter *adapter = netdev_priv(netdev);
1888
1889	wol->supported = 0;
1890	wol->wolopts = 0;
1891
1892	if (!(adapter->flags & FLAG_HAS_WOL) ||
1893	    !device_can_wakeup(&adapter->pdev->dev))
1894		return;
1895
1896	wol->supported = WAKE_UCAST | WAKE_MCAST |
1897	    WAKE_BCAST | WAKE_MAGIC | WAKE_PHY;
1898
1899	/* apply any specific unsupported masks here */
1900	if (adapter->flags & FLAG_NO_WAKE_UCAST) {
1901		wol->supported &= ~WAKE_UCAST;
1902
1903		if (adapter->wol & E1000_WUFC_EX)
1904			e_err("Interface does not support directed (unicast) frame wake-up packets\n");
1905	}
1906
1907	if (adapter->wol & E1000_WUFC_EX)
1908		wol->wolopts |= WAKE_UCAST;
1909	if (adapter->wol & E1000_WUFC_MC)
1910		wol->wolopts |= WAKE_MCAST;
1911	if (adapter->wol & E1000_WUFC_BC)
1912		wol->wolopts |= WAKE_BCAST;
1913	if (adapter->wol & E1000_WUFC_MAG)
1914		wol->wolopts |= WAKE_MAGIC;
1915	if (adapter->wol & E1000_WUFC_LNKC)
1916		wol->wolopts |= WAKE_PHY;
1917}
1918
1919static int e1000_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
1920{
1921	struct e1000_adapter *adapter = netdev_priv(netdev);
1922
1923	if (!(adapter->flags & FLAG_HAS_WOL) ||
1924	    !device_can_wakeup(&adapter->pdev->dev) ||
1925	    (wol->wolopts & ~(WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
1926			      WAKE_MAGIC | WAKE_PHY)))
1927		return -EOPNOTSUPP;
1928
1929	/* these settings will always override what we currently have */
1930	adapter->wol = 0;
1931
1932	if (wol->wolopts & WAKE_UCAST)
1933		adapter->wol |= E1000_WUFC_EX;
1934	if (wol->wolopts & WAKE_MCAST)
1935		adapter->wol |= E1000_WUFC_MC;
1936	if (wol->wolopts & WAKE_BCAST)
1937		adapter->wol |= E1000_WUFC_BC;
1938	if (wol->wolopts & WAKE_MAGIC)
1939		adapter->wol |= E1000_WUFC_MAG;
1940	if (wol->wolopts & WAKE_PHY)
1941		adapter->wol |= E1000_WUFC_LNKC;
1942
1943	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
1944
1945	return 0;
1946}
1947
1948static int e1000_set_phys_id(struct net_device *netdev,
1949			     enum ethtool_phys_id_state state)
1950{
1951	struct e1000_adapter *adapter = netdev_priv(netdev);
1952	struct e1000_hw *hw = &adapter->hw;
1953
1954	switch (state) {
1955	case ETHTOOL_ID_ACTIVE:
1956		pm_runtime_get_sync(netdev->dev.parent);
1957
1958		if (!hw->mac.ops.blink_led)
1959			return 2;	/* cycle on/off twice per second */
1960
1961		hw->mac.ops.blink_led(hw);
1962		break;
1963
1964	case ETHTOOL_ID_INACTIVE:
1965		if (hw->phy.type == e1000_phy_ife)
1966			e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED, 0);
1967		hw->mac.ops.led_off(hw);
1968		hw->mac.ops.cleanup_led(hw);
1969		pm_runtime_put_sync(netdev->dev.parent);
1970		break;
1971
1972	case ETHTOOL_ID_ON:
1973		hw->mac.ops.led_on(hw);
1974		break;
1975
1976	case ETHTOOL_ID_OFF:
1977		hw->mac.ops.led_off(hw);
1978		break;
1979	}
1980
1981	return 0;
1982}
1983
1984static int e1000_get_coalesce(struct net_device *netdev,
1985			      struct ethtool_coalesce *ec,
1986			      struct kernel_ethtool_coalesce *kernel_coal,
1987			      struct netlink_ext_ack *extack)
1988{
1989	struct e1000_adapter *adapter = netdev_priv(netdev);
1990
1991	if (adapter->itr_setting <= 4)
1992		ec->rx_coalesce_usecs = adapter->itr_setting;
1993	else
1994		ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;
1995
1996	return 0;
1997}
1998
1999static int e1000_set_coalesce(struct net_device *netdev,
2000			      struct ethtool_coalesce *ec,
2001			      struct kernel_ethtool_coalesce *kernel_coal,
2002			      struct netlink_ext_ack *extack)
2003{
2004	struct e1000_adapter *adapter = netdev_priv(netdev);
2005
2006	if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
2007	    ((ec->rx_coalesce_usecs > 4) &&
2008	     (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
2009	    (ec->rx_coalesce_usecs == 2))
2010		return -EINVAL;
2011
2012	if (ec->rx_coalesce_usecs == 4) {
2013		adapter->itr_setting = 4;
2014		adapter->itr = adapter->itr_setting;
2015	} else if (ec->rx_coalesce_usecs <= 3) {
2016		adapter->itr = 20000;
2017		adapter->itr_setting = ec->rx_coalesce_usecs;
2018	} else {
2019		adapter->itr = (1000000 / ec->rx_coalesce_usecs);
2020		adapter->itr_setting = adapter->itr & ~3;
2021	}
2022
2023	if (adapter->itr_setting != 0)
2024		e1000e_write_itr(adapter, adapter->itr);
2025	else
2026		e1000e_write_itr(adapter, 0);
2027
2028	return 0;
2029}
2030
2031static int e1000_nway_reset(struct net_device *netdev)
2032{
2033	struct e1000_adapter *adapter = netdev_priv(netdev);
2034
2035	if (!netif_running(netdev))
2036		return -EAGAIN;
2037
2038	if (!adapter->hw.mac.autoneg)
2039		return -EINVAL;
2040
2041	e1000e_reinit_locked(adapter);
2042
2043	return 0;
2044}
2045
2046static void e1000_get_ethtool_stats(struct net_device *netdev,
2047				    struct ethtool_stats __always_unused *stats,
2048				    u64 *data)
2049{
2050	struct e1000_adapter *adapter = netdev_priv(netdev);
2051	struct rtnl_link_stats64 net_stats;
2052	int i;
2053	char *p = NULL;
2054
2055	dev_get_stats(netdev, &net_stats);
2056
2057	for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
2058		switch (e1000_gstrings_stats[i].type) {
2059		case NETDEV_STATS:
2060			p = (char *)&net_stats +
2061			    e1000_gstrings_stats[i].stat_offset;
2062			break;
2063		case E1000_STATS:
2064			p = (char *)adapter +
2065			    e1000_gstrings_stats[i].stat_offset;
2066			break;
2067		default:
2068			data[i] = 0;
2069			continue;
2070		}
2071
2072		data[i] = (e1000_gstrings_stats[i].sizeof_stat ==
2073			   sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
2074	}
2075}
2076
2077static void e1000_get_strings(struct net_device __always_unused *netdev,
2078			      u32 stringset, u8 *data)
2079{
2080	u8 *p = data;
2081	int i;
2082
2083	switch (stringset) {
2084	case ETH_SS_TEST:
2085		memcpy(data, e1000_gstrings_test, sizeof(e1000_gstrings_test));
2086		break;
2087	case ETH_SS_STATS:
2088		for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
2089			memcpy(p, e1000_gstrings_stats[i].stat_string,
2090			       ETH_GSTRING_LEN);
2091			p += ETH_GSTRING_LEN;
2092		}
2093		break;
2094	case ETH_SS_PRIV_FLAGS:
2095		memcpy(data, e1000e_priv_flags_strings,
2096		       E1000E_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
2097		break;
2098	}
2099}
2100
2101static int e1000_get_rxfh_fields(struct net_device *netdev,
2102				 struct ethtool_rxfh_fields *info)
2103{
2104	struct e1000_adapter *adapter = netdev_priv(netdev);
2105	struct e1000_hw *hw = &adapter->hw;
2106	u32 mrqc;
2107
2108	info->data = 0;
2109
2110	mrqc = er32(MRQC);
2111
2112	if (!(mrqc & E1000_MRQC_RSS_FIELD_MASK))
2113		return 0;
2114
2115	switch (info->flow_type) {
2116	case TCP_V4_FLOW:
2117		if (mrqc & E1000_MRQC_RSS_FIELD_IPV4_TCP)
2118			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
2119		fallthrough;
2120	case UDP_V4_FLOW:
2121	case SCTP_V4_FLOW:
2122	case AH_ESP_V4_FLOW:
2123	case IPV4_FLOW:
2124		if (mrqc & E1000_MRQC_RSS_FIELD_IPV4)
2125			info->data |= RXH_IP_SRC | RXH_IP_DST;
2126		break;
2127	case TCP_V6_FLOW:
2128		if (mrqc & E1000_MRQC_RSS_FIELD_IPV6_TCP)
2129			info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
2130		fallthrough;
2131	case UDP_V6_FLOW:
2132	case SCTP_V6_FLOW:
2133	case AH_ESP_V6_FLOW:
2134	case IPV6_FLOW:
2135		if (mrqc & E1000_MRQC_RSS_FIELD_IPV6)
2136			info->data |= RXH_IP_SRC | RXH_IP_DST;
2137		break;
2138	default:
2139		break;
2140	}
2141	return 0;
2142}
2143
2144static int e1000e_get_eee(struct net_device *netdev, struct ethtool_keee *edata)
2145{
2146	struct e1000_adapter *adapter = netdev_priv(netdev);
2147	struct e1000_hw *hw = &adapter->hw;
2148	u16 cap_addr, lpa_addr, pcs_stat_addr, phy_data;
2149	u32 ret_val;
2150
2151	if (!(adapter->flags2 & FLAG2_HAS_EEE))
2152		return -EOPNOTSUPP;
2153
2154	switch (hw->phy.type) {
2155	case e1000_phy_82579:
2156		cap_addr = I82579_EEE_CAPABILITY;
2157		lpa_addr = I82579_EEE_LP_ABILITY;
2158		pcs_stat_addr = I82579_EEE_PCS_STATUS;
2159		break;
2160	case e1000_phy_i217:
2161		cap_addr = I217_EEE_CAPABILITY;
2162		lpa_addr = I217_EEE_LP_ABILITY;
2163		pcs_stat_addr = I217_EEE_PCS_STATUS;
2164		break;
2165	default:
2166		return -EOPNOTSUPP;
2167	}
2168
2169	ret_val = hw->phy.ops.acquire(hw);
2170	if (ret_val)
2171		return -EBUSY;
2172
2173	/* EEE Capability */
2174	ret_val = e1000_read_emi_reg_locked(hw, cap_addr, &phy_data);
2175	if (ret_val)
2176		goto release;
2177	mii_eee_cap1_mod_linkmode_t(edata->supported, phy_data);
2178
2179	/* EEE Advertised */
2180	mii_eee_cap1_mod_linkmode_t(edata->advertised, adapter->eee_advert);
2181
2182	/* EEE Link Partner Advertised */
2183	ret_val = e1000_read_emi_reg_locked(hw, lpa_addr, &phy_data);
2184	if (ret_val)
2185		goto release;
2186	mii_eee_cap1_mod_linkmode_t(edata->lp_advertised, phy_data);
2187
2188	/* EEE PCS Status */
2189	ret_val = e1000_read_emi_reg_locked(hw, pcs_stat_addr, &phy_data);
2190	if (ret_val)
2191		goto release;
2192	if (hw->phy.type == e1000_phy_82579)
2193		phy_data <<= 8;
2194
2195	/* Result of the EEE auto negotiation - there is no register that
2196	 * has the status of the EEE negotiation so do a best-guess based
2197	 * on whether Tx or Rx LPI indications have been received.
2198	 */
2199	if (phy_data & (E1000_EEE_TX_LPI_RCVD | E1000_EEE_RX_LPI_RCVD))
2200		edata->eee_active = true;
2201
2202	edata->eee_enabled = !hw->dev_spec.ich8lan.eee_disable;
2203	edata->tx_lpi_enabled = true;
2204	edata->tx_lpi_timer = er32(LPIC) >> E1000_LPIC_LPIET_SHIFT;
2205
2206release:
2207	hw->phy.ops.release(hw);
2208	if (ret_val)
2209		ret_val = -ENODATA;
2210
2211	return ret_val;
2212}
2213
2214static int e1000e_set_eee(struct net_device *netdev, struct ethtool_keee *edata)
2215{
2216	struct e1000_adapter *adapter = netdev_priv(netdev);
2217	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = {};
2218	__ETHTOOL_DECLARE_LINK_MODE_MASK(tmp) = {};
2219	struct e1000_hw *hw = &adapter->hw;
2220	struct ethtool_keee eee_curr;
2221	s32 ret_val;
2222
2223	ret_val = e1000e_get_eee(netdev, &eee_curr);
2224	if (ret_val)
2225		return ret_val;
2226
2227	if (eee_curr.tx_lpi_enabled != edata->tx_lpi_enabled) {
2228		e_err("Setting EEE tx-lpi is not supported\n");
2229		return -EINVAL;
2230	}
2231
2232	if (eee_curr.tx_lpi_timer != edata->tx_lpi_timer) {
2233		e_err("Setting EEE Tx LPI timer is not supported\n");
2234		return -EINVAL;
2235	}
2236
2237	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
2238			 supported);
2239	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
2240			 supported);
2241
2242	if (linkmode_andnot(tmp, edata->advertised, supported)) {
2243		e_err("EEE advertisement supports only 100TX and/or 1000T full-duplex\n");
2244		return -EINVAL;
2245	}
2246
2247	adapter->eee_advert = linkmode_to_mii_eee_cap1_t(edata->advertised);
2248
2249	hw->dev_spec.ich8lan.eee_disable = !edata->eee_enabled;
2250
2251	/* reset the link */
2252	if (netif_running(netdev))
2253		e1000e_reinit_locked(adapter);
2254	else
2255		e1000e_reset(adapter);
2256
2257	return 0;
2258}
2259
2260static int e1000e_get_ts_info(struct net_device *netdev,
2261			      struct kernel_ethtool_ts_info *info)
2262{
2263	struct e1000_adapter *adapter = netdev_priv(netdev);
2264
2265	ethtool_op_get_ts_info(netdev, info);
2266
2267	if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
2268		return 0;
2269
2270	info->so_timestamping |= (SOF_TIMESTAMPING_TX_HARDWARE |
2271				  SOF_TIMESTAMPING_RX_HARDWARE |
2272				  SOF_TIMESTAMPING_RAW_HARDWARE);
2273
2274	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2275
2276	info->rx_filters = (BIT(HWTSTAMP_FILTER_NONE) |
2277			    BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2278			    BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2279			    BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2280			    BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
2281			    BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2282			    BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
2283			    BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2284			    BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2285			    BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2286			    BIT(HWTSTAMP_FILTER_ALL));
2287
2288	if (adapter->ptp_clock)
2289		info->phc_index = ptp_clock_index(adapter->ptp_clock);
2290
2291	return 0;
2292}
2293
2294static u32 e1000e_get_priv_flags(struct net_device *netdev)
2295{
2296	struct e1000_adapter *adapter = netdev_priv(netdev);
2297	u32 priv_flags = 0;
2298
2299	if (adapter->flags2 & FLAG2_ENABLE_S0IX_FLOWS)
2300		priv_flags |= E1000E_PRIV_FLAGS_S0IX_ENABLED;
2301
2302	if (adapter->flags2 & FLAG2_DISABLE_K1)
2303		priv_flags |= E1000E_PRIV_FLAGS_DISABLE_K1;
2304
2305	return priv_flags;
2306}
2307
2308static int e1000e_set_priv_flags(struct net_device *netdev, u32 priv_flags)
2309{
2310	struct e1000_adapter *adapter = netdev_priv(netdev);
2311	struct e1000_hw *hw = &adapter->hw;
2312	unsigned int flags2 = adapter->flags2;
2313	unsigned int changed;
2314
2315	flags2 &= ~(FLAG2_ENABLE_S0IX_FLOWS | FLAG2_DISABLE_K1);
2316
2317	if (priv_flags & E1000E_PRIV_FLAGS_S0IX_ENABLED) {
2318		if (hw->mac.type < e1000_pch_cnp) {
2319			e_err("S0ix is not supported on this device\n");
2320			return -EINVAL;
2321		}
2322
2323		flags2 |= FLAG2_ENABLE_S0IX_FLOWS;
2324	}
2325
2326	if (priv_flags & E1000E_PRIV_FLAGS_DISABLE_K1) {
2327		if (hw->mac.type < e1000_ich8lan) {
2328			e_err("Disabling K1 is not supported on this device\n");
2329			return -EINVAL;
2330		}
2331
2332		flags2 |= FLAG2_DISABLE_K1;
2333	}
2334
2335	changed = adapter->flags2 ^ flags2;
2336	if (changed)
2337		adapter->flags2 = flags2;
2338
2339	if (changed & FLAG2_DISABLE_K1) {
2340		/* reset the hardware to apply the changes */
2341		while (test_and_set_bit(__E1000_RESETTING,
2342					&adapter->state))
2343			usleep_range(1000, 2000);
2344
2345		if (netif_running(adapter->netdev)) {
2346			e1000e_down(adapter, true);
2347			e1000e_up(adapter);
2348		} else {
2349			e1000e_reset(adapter);
2350		}
2351
2352		clear_bit(__E1000_RESETTING, &adapter->state);
2353	}
2354
2355	return 0;
2356}
2357
2358static const struct ethtool_ops e1000_ethtool_ops = {
2359	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
2360	.get_drvinfo		= e1000_get_drvinfo,
2361	.get_regs_len		= e1000_get_regs_len,
2362	.get_regs		= e1000_get_regs,
2363	.get_wol		= e1000_get_wol,
2364	.set_wol		= e1000_set_wol,
2365	.get_msglevel		= e1000_get_msglevel,
2366	.set_msglevel		= e1000_set_msglevel,
2367	.nway_reset		= e1000_nway_reset,
2368	.get_link		= ethtool_op_get_link,
2369	.get_eeprom_len		= e1000_get_eeprom_len,
2370	.get_eeprom		= e1000_get_eeprom,
2371	.set_eeprom		= e1000_set_eeprom,
2372	.get_ringparam		= e1000_get_ringparam,
2373	.set_ringparam		= e1000_set_ringparam,
2374	.get_pauseparam		= e1000_get_pauseparam,
2375	.set_pauseparam		= e1000_set_pauseparam,
2376	.self_test		= e1000_diag_test,
2377	.get_strings		= e1000_get_strings,
2378	.set_phys_id		= e1000_set_phys_id,
2379	.get_ethtool_stats	= e1000_get_ethtool_stats,
2380	.get_sset_count		= e1000e_get_sset_count,
2381	.get_coalesce		= e1000_get_coalesce,
2382	.set_coalesce		= e1000_set_coalesce,
2383	.get_rxfh_fields	= e1000_get_rxfh_fields,
2384	.get_ts_info		= e1000e_get_ts_info,
2385	.get_eee		= e1000e_get_eee,
2386	.set_eee		= e1000e_set_eee,
2387	.get_link_ksettings	= e1000_get_link_ksettings,
2388	.set_link_ksettings	= e1000_set_link_ksettings,
2389	.get_priv_flags		= e1000e_get_priv_flags,
2390	.set_priv_flags		= e1000e_set_priv_flags,
2391};
2392
2393void e1000e_set_ethtool_ops(struct net_device *netdev)
2394{
2395	netdev->ethtool_ops = &e1000_ethtool_ops;
2396}