1// SPDX-License-Identifier: GPL-2.0
   2/* Copyright (c)  2018 Intel Corporation */
   3
   4/* ethtool support for igc */
   5#include <linux/if_vlan.h>
   6#include <linux/pm_runtime.h>
   7#include <linux/mdio.h>
   8
   9#include "igc.h"
  10#include "igc_diag.h"
  11
  12/* forward declaration */
  13struct igc_stats {
  14	char stat_string[ETH_GSTRING_LEN];
  15	int sizeof_stat;
  16	int stat_offset;
  17};
  18
  19#define IGC_STAT(_name, _stat) { \
  20	.stat_string = _name, \
  21	.sizeof_stat = sizeof_field(struct igc_adapter, _stat), \
  22	.stat_offset = offsetof(struct igc_adapter, _stat) \
  23}
  24
  25static const struct igc_stats igc_gstrings_stats[] = {
  26	IGC_STAT("rx_packets", stats.gprc),
  27	IGC_STAT("tx_packets", stats.gptc),
  28	IGC_STAT("rx_bytes", stats.gorc),
  29	IGC_STAT("tx_bytes", stats.gotc),
  30	IGC_STAT("rx_broadcast", stats.bprc),
  31	IGC_STAT("tx_broadcast", stats.bptc),
  32	IGC_STAT("rx_multicast", stats.mprc),
  33	IGC_STAT("tx_multicast", stats.mptc),
  34	IGC_STAT("multicast", stats.mprc),
  35	IGC_STAT("collisions", stats.colc),
  36	IGC_STAT("rx_crc_errors", stats.crcerrs),
  37	IGC_STAT("rx_no_buffer_count", stats.rnbc),
  38	IGC_STAT("rx_missed_errors", stats.mpc),
  39	IGC_STAT("tx_aborted_errors", stats.ecol),
  40	IGC_STAT("tx_carrier_errors", stats.tncrs),
  41	IGC_STAT("tx_window_errors", stats.latecol),
  42	IGC_STAT("tx_abort_late_coll", stats.latecol),
  43	IGC_STAT("tx_deferred_ok", stats.dc),
  44	IGC_STAT("tx_single_coll_ok", stats.scc),
  45	IGC_STAT("tx_multi_coll_ok", stats.mcc),
  46	IGC_STAT("tx_timeout_count", tx_timeout_count),
  47	IGC_STAT("rx_long_length_errors", stats.roc),
  48	IGC_STAT("rx_short_length_errors", stats.ruc),
  49	IGC_STAT("rx_align_errors", stats.algnerrc),
  50	IGC_STAT("tx_tcp_seg_good", stats.tsctc),
  51	IGC_STAT("tx_tcp_seg_failed", stats.tsctfc),
  52	IGC_STAT("rx_flow_control_xon", stats.xonrxc),
  53	IGC_STAT("rx_flow_control_xoff", stats.xoffrxc),
  54	IGC_STAT("tx_flow_control_xon", stats.xontxc),
  55	IGC_STAT("tx_flow_control_xoff", stats.xofftxc),
  56	IGC_STAT("rx_long_byte_count", stats.gorc),
  57	IGC_STAT("tx_dma_out_of_sync", stats.doosync),
  58	IGC_STAT("tx_smbus", stats.mgptc),
  59	IGC_STAT("rx_smbus", stats.mgprc),
  60	IGC_STAT("dropped_smbus", stats.mgpdc),
  61	IGC_STAT("os2bmc_rx_by_bmc", stats.o2bgptc),
  62	IGC_STAT("os2bmc_tx_by_bmc", stats.b2ospc),
  63	IGC_STAT("os2bmc_tx_by_host", stats.o2bspc),
  64	IGC_STAT("os2bmc_rx_by_host", stats.b2ogprc),
  65	IGC_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
  66	IGC_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
  67	IGC_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
  68	IGC_STAT("tx_lpi_counter", stats.tlpic),
  69	IGC_STAT("rx_lpi_counter", stats.rlpic),
  70	IGC_STAT("qbv_config_change_errors", qbv_config_change_errors),
  71};
  72
  73#define IGC_NETDEV_STAT(_net_stat) { \
  74	.stat_string = __stringify(_net_stat), \
  75	.sizeof_stat = sizeof_field(struct rtnl_link_stats64, _net_stat), \
  76	.stat_offset = offsetof(struct rtnl_link_stats64, _net_stat) \
  77}
  78
  79static const struct igc_stats igc_gstrings_net_stats[] = {
  80	IGC_NETDEV_STAT(rx_errors),
  81	IGC_NETDEV_STAT(tx_errors),
  82	IGC_NETDEV_STAT(tx_dropped),
  83	IGC_NETDEV_STAT(rx_length_errors),
  84	IGC_NETDEV_STAT(rx_over_errors),
  85	IGC_NETDEV_STAT(rx_frame_errors),
  86	IGC_NETDEV_STAT(rx_fifo_errors),
  87	IGC_NETDEV_STAT(tx_fifo_errors),
  88	IGC_NETDEV_STAT(tx_heartbeat_errors)
  89};
  90
  91enum igc_diagnostics_results {
  92	TEST_REG = 0,
  93	TEST_EEP,
  94	TEST_IRQ,
  95	TEST_LOOP,
  96	TEST_LINK
  97};
  98
  99static const char igc_gstrings_test[][ETH_GSTRING_LEN] = {
 100	[TEST_REG]  = "Register test  (offline)",
 101	[TEST_EEP]  = "Eeprom test    (offline)",
 102	[TEST_IRQ]  = "Interrupt test (offline)",
 103	[TEST_LOOP] = "Loopback test  (offline)",
 104	[TEST_LINK] = "Link test   (on/offline)"
 105};
 106
 107#define IGC_TEST_LEN (sizeof(igc_gstrings_test) / ETH_GSTRING_LEN)
 108
 109#define IGC_GLOBAL_STATS_LEN	\
 110	(sizeof(igc_gstrings_stats) / sizeof(struct igc_stats))
 111#define IGC_NETDEV_STATS_LEN	\
 112	(sizeof(igc_gstrings_net_stats) / sizeof(struct igc_stats))
 113#define IGC_RX_QUEUE_STATS_LEN \
 114	(sizeof(struct igc_rx_queue_stats) / sizeof(u64))
 115#define IGC_TX_QUEUE_STATS_LEN 3 /* packets, bytes, restart_queue */
 116#define IGC_QUEUE_STATS_LEN \
 117	((((struct igc_adapter *)netdev_priv(netdev))->num_rx_queues * \
 118	  IGC_RX_QUEUE_STATS_LEN) + \
 119	 (((struct igc_adapter *)netdev_priv(netdev))->num_tx_queues * \
 120	  IGC_TX_QUEUE_STATS_LEN))
 121#define IGC_STATS_LEN \
 122	(IGC_GLOBAL_STATS_LEN + IGC_NETDEV_STATS_LEN + IGC_QUEUE_STATS_LEN)
 123
 124static const char igc_priv_flags_strings[][ETH_GSTRING_LEN] = {
 125#define IGC_PRIV_FLAGS_LEGACY_RX	BIT(0)
 126	"legacy-rx",
 127};
 128
 129#define IGC_PRIV_FLAGS_STR_LEN ARRAY_SIZE(igc_priv_flags_strings)
 130
 131static void igc_ethtool_get_drvinfo(struct net_device *netdev,
 132				    struct ethtool_drvinfo *drvinfo)
 133{
 134	struct igc_adapter *adapter = netdev_priv(netdev);
 135	struct igc_hw *hw = &adapter->hw;
 136	u16 nvm_version = 0;
 137	u16 gphy_version;
 138
 139	strscpy(drvinfo->driver, igc_driver_name, sizeof(drvinfo->driver));
 140
 141	/* NVM image version is reported as firmware version for i225 device */
 142	hw->nvm.ops.read(hw, IGC_NVM_DEV_STARTER, 1, &nvm_version);
 143
 144	/* gPHY firmware version is reported as PHY FW version */
 145	gphy_version = igc_read_phy_fw_version(hw);
 146
 147	scnprintf(adapter->fw_version,
 148		  sizeof(adapter->fw_version),
 149		  "%x:%x",
 150		  nvm_version,
 151		  gphy_version);
 152
 153	strscpy(drvinfo->fw_version, adapter->fw_version,
 154		sizeof(drvinfo->fw_version));
 155
 156	strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
 157		sizeof(drvinfo->bus_info));
 158
 159	drvinfo->n_priv_flags = IGC_PRIV_FLAGS_STR_LEN;
 160}
 161
 162static int igc_ethtool_get_regs_len(struct net_device *netdev)
 163{
 164	return IGC_REGS_LEN * sizeof(u32);
 165}
 166
 167static void igc_ethtool_get_regs(struct net_device *netdev,
 168				 struct ethtool_regs *regs, void *p)
 169{
 170	struct igc_adapter *adapter = netdev_priv(netdev);
 171	struct igc_hw *hw = &adapter->hw;
 172	u32 *regs_buff = p;
 173	u8 i;
 174
 175	memset(p, 0, IGC_REGS_LEN * sizeof(u32));
 176
 177	regs->version = (2u << 24) | (hw->revision_id << 16) | hw->device_id;
 178
 179	/* General Registers */
 180	regs_buff[0] = rd32(IGC_CTRL);
 181	regs_buff[1] = rd32(IGC_STATUS);
 182	regs_buff[2] = rd32(IGC_CTRL_EXT);
 183	regs_buff[3] = rd32(IGC_MDIC);
 184	regs_buff[4] = rd32(IGC_CONNSW);
 185
 186	/* NVM Register */
 187	regs_buff[5] = rd32(IGC_EECD);
 188
 189	/* Interrupt */
 190	/* Reading EICS for EICR because they read the
 191	 * same but EICS does not clear on read
 192	 */
 193	regs_buff[6] = rd32(IGC_EICS);
 194	regs_buff[7] = rd32(IGC_EICS);
 195	regs_buff[8] = rd32(IGC_EIMS);
 196	regs_buff[9] = rd32(IGC_EIMC);
 197	regs_buff[10] = rd32(IGC_EIAC);
 198	regs_buff[11] = rd32(IGC_EIAM);
 199	/* Reading ICS for ICR because they read the
 200	 * same but ICS does not clear on read
 201	 */
 202	regs_buff[12] = rd32(IGC_ICS);
 203	regs_buff[13] = rd32(IGC_ICS);
 204	regs_buff[14] = rd32(IGC_IMS);
 205	regs_buff[15] = rd32(IGC_IMC);
 206	regs_buff[16] = rd32(IGC_IAC);
 207	regs_buff[17] = rd32(IGC_IAM);
 208
 209	/* Flow Control */
 210	regs_buff[18] = rd32(IGC_FCAL);
 211	regs_buff[19] = rd32(IGC_FCAH);
 212	regs_buff[20] = rd32(IGC_FCTTV);
 213	regs_buff[21] = rd32(IGC_FCRTL);
 214	regs_buff[22] = rd32(IGC_FCRTH);
 215	regs_buff[23] = rd32(IGC_FCRTV);
 216
 217	/* Receive */
 218	regs_buff[24] = rd32(IGC_RCTL);
 219	regs_buff[25] = rd32(IGC_RXCSUM);
 220	regs_buff[26] = rd32(IGC_RLPML);
 221	regs_buff[27] = rd32(IGC_RFCTL);
 222
 223	/* Transmit */
 224	regs_buff[28] = rd32(IGC_TCTL);
 225	regs_buff[29] = rd32(IGC_TIPG);
 226
 227	/* Wake Up */
 228
 229	/* MAC */
 230
 231	/* Statistics */
 232	regs_buff[30] = adapter->stats.crcerrs;
 233	regs_buff[31] = adapter->stats.algnerrc;
 234	regs_buff[32] = adapter->stats.symerrs;
 235	regs_buff[33] = adapter->stats.rxerrc;
 236	regs_buff[34] = adapter->stats.mpc;
 237	regs_buff[35] = adapter->stats.scc;
 238	regs_buff[36] = adapter->stats.ecol;
 239	regs_buff[37] = adapter->stats.mcc;
 240	regs_buff[38] = adapter->stats.latecol;
 241	regs_buff[39] = adapter->stats.colc;
 242	regs_buff[40] = adapter->stats.dc;
 243	regs_buff[41] = adapter->stats.tncrs;
 244	regs_buff[42] = adapter->stats.sec;
 245	regs_buff[43] = adapter->stats.htdpmc;
 246	regs_buff[44] = adapter->stats.rlec;
 247	regs_buff[45] = adapter->stats.xonrxc;
 248	regs_buff[46] = adapter->stats.xontxc;
 249	regs_buff[47] = adapter->stats.xoffrxc;
 250	regs_buff[48] = adapter->stats.xofftxc;
 251	regs_buff[49] = adapter->stats.fcruc;
 252	regs_buff[50] = adapter->stats.prc64;
 253	regs_buff[51] = adapter->stats.prc127;
 254	regs_buff[52] = adapter->stats.prc255;
 255	regs_buff[53] = adapter->stats.prc511;
 256	regs_buff[54] = adapter->stats.prc1023;
 257	regs_buff[55] = adapter->stats.prc1522;
 258	regs_buff[56] = adapter->stats.gprc;
 259	regs_buff[57] = adapter->stats.bprc;
 260	regs_buff[58] = adapter->stats.mprc;
 261	regs_buff[59] = adapter->stats.gptc;
 262	regs_buff[60] = adapter->stats.gorc;
 263	regs_buff[61] = adapter->stats.gotc;
 264	regs_buff[62] = adapter->stats.rnbc;
 265	regs_buff[63] = adapter->stats.ruc;
 266	regs_buff[64] = adapter->stats.rfc;
 267	regs_buff[65] = adapter->stats.roc;
 268	regs_buff[66] = adapter->stats.rjc;
 269	regs_buff[67] = adapter->stats.mgprc;
 270	regs_buff[68] = adapter->stats.mgpdc;
 271	regs_buff[69] = adapter->stats.mgptc;
 272	regs_buff[70] = adapter->stats.tor;
 273	regs_buff[71] = adapter->stats.tot;
 274	regs_buff[72] = adapter->stats.tpr;
 275	regs_buff[73] = adapter->stats.tpt;
 276	regs_buff[74] = adapter->stats.ptc64;
 277	regs_buff[75] = adapter->stats.ptc127;
 278	regs_buff[76] = adapter->stats.ptc255;
 279	regs_buff[77] = adapter->stats.ptc511;
 280	regs_buff[78] = adapter->stats.ptc1023;
 281	regs_buff[79] = adapter->stats.ptc1522;
 282	regs_buff[80] = adapter->stats.mptc;
 283	regs_buff[81] = adapter->stats.bptc;
 284	regs_buff[82] = adapter->stats.tsctc;
 285	regs_buff[83] = adapter->stats.iac;
 286	regs_buff[84] = adapter->stats.rpthc;
 287	regs_buff[85] = adapter->stats.hgptc;
 288	regs_buff[86] = adapter->stats.hgorc;
 289	regs_buff[87] = adapter->stats.hgotc;
 290	regs_buff[88] = adapter->stats.lenerrs;
 291	regs_buff[89] = adapter->stats.scvpc;
 292	regs_buff[90] = adapter->stats.hrmpc;
 293
 294	for (i = 0; i < 4; i++)
 295		regs_buff[91 + i] = rd32(IGC_SRRCTL(i));
 296	for (i = 0; i < 4; i++)
 297		regs_buff[95 + i] = rd32(IGC_PSRTYPE(i));
 298	for (i = 0; i < 4; i++)
 299		regs_buff[99 + i] = rd32(IGC_RDBAL(i));
 300	for (i = 0; i < 4; i++)
 301		regs_buff[103 + i] = rd32(IGC_RDBAH(i));
 302	for (i = 0; i < 4; i++)
 303		regs_buff[107 + i] = rd32(IGC_RDLEN(i));
 304	for (i = 0; i < 4; i++)
 305		regs_buff[111 + i] = rd32(IGC_RDH(i));
 306	for (i = 0; i < 4; i++)
 307		regs_buff[115 + i] = rd32(IGC_RDT(i));
 308	for (i = 0; i < 4; i++)
 309		regs_buff[119 + i] = rd32(IGC_RXDCTL(i));
 310
 311	for (i = 0; i < 10; i++)
 312		regs_buff[123 + i] = rd32(IGC_EITR(i));
 313	for (i = 0; i < 16; i++)
 314		regs_buff[139 + i] = rd32(IGC_RAL(i));
 315	for (i = 0; i < 16; i++)
 316		regs_buff[145 + i] = rd32(IGC_RAH(i));
 317
 318	for (i = 0; i < 4; i++)
 319		regs_buff[149 + i] = rd32(IGC_TDBAL(i));
 320	for (i = 0; i < 4; i++)
 321		regs_buff[152 + i] = rd32(IGC_TDBAH(i));
 322	for (i = 0; i < 4; i++)
 323		regs_buff[156 + i] = rd32(IGC_TDLEN(i));
 324	for (i = 0; i < 4; i++)
 325		regs_buff[160 + i] = rd32(IGC_TDH(i));
 326	for (i = 0; i < 4; i++)
 327		regs_buff[164 + i] = rd32(IGC_TDT(i));
 328	for (i = 0; i < 4; i++)
 329		regs_buff[168 + i] = rd32(IGC_TXDCTL(i));
 330
 331	/* XXX: Due to a bug few lines above, RAL and RAH registers are
 332	 * overwritten. To preserve the ABI, we write these registers again in
 333	 * regs_buff.
 334	 */
 335	for (i = 0; i < 16; i++)
 336		regs_buff[172 + i] = rd32(IGC_RAL(i));
 337	for (i = 0; i < 16; i++)
 338		regs_buff[188 + i] = rd32(IGC_RAH(i));
 339
 340	regs_buff[204] = rd32(IGC_VLANPQF);
 341
 342	for (i = 0; i < 8; i++)
 343		regs_buff[205 + i] = rd32(IGC_ETQF(i));
 344
 345	regs_buff[213] = adapter->stats.tlpic;
 346	regs_buff[214] = adapter->stats.rlpic;
 347}
 348
 349static void igc_ethtool_get_wol(struct net_device *netdev,
 350				struct ethtool_wolinfo *wol)
 351{
 352	struct igc_adapter *adapter = netdev_priv(netdev);
 353
 354	wol->wolopts = 0;
 355
 356	if (!(adapter->flags & IGC_FLAG_WOL_SUPPORTED))
 357		return;
 358
 359	wol->supported = WAKE_UCAST | WAKE_MCAST |
 360			 WAKE_BCAST | WAKE_MAGIC |
 361			 WAKE_PHY;
 362
 363	/* apply any specific unsupported masks here */
 364	switch (adapter->hw.device_id) {
 365	default:
 366		break;
 367	}
 368
 369	if (adapter->wol & IGC_WUFC_EX)
 370		wol->wolopts |= WAKE_UCAST;
 371	if (adapter->wol & IGC_WUFC_MC)
 372		wol->wolopts |= WAKE_MCAST;
 373	if (adapter->wol & IGC_WUFC_BC)
 374		wol->wolopts |= WAKE_BCAST;
 375	if (adapter->wol & IGC_WUFC_MAG)
 376		wol->wolopts |= WAKE_MAGIC;
 377	if (adapter->wol & IGC_WUFC_LNKC)
 378		wol->wolopts |= WAKE_PHY;
 379}
 380
 381static int igc_ethtool_set_wol(struct net_device *netdev,
 382			       struct ethtool_wolinfo *wol)
 383{
 384	struct igc_adapter *adapter = netdev_priv(netdev);
 385
 386	if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE | WAKE_FILTER))
 387		return -EOPNOTSUPP;
 388
 389	if (!(adapter->flags & IGC_FLAG_WOL_SUPPORTED))
 390		return wol->wolopts ? -EOPNOTSUPP : 0;
 391
 392	/* these settings will always override what we currently have */
 393	adapter->wol = 0;
 394
 395	if (wol->wolopts & WAKE_UCAST)
 396		adapter->wol |= IGC_WUFC_EX;
 397	if (wol->wolopts & WAKE_MCAST)
 398		adapter->wol |= IGC_WUFC_MC;
 399	if (wol->wolopts & WAKE_BCAST)
 400		adapter->wol |= IGC_WUFC_BC;
 401	if (wol->wolopts & WAKE_MAGIC)
 402		adapter->wol |= IGC_WUFC_MAG;
 403	if (wol->wolopts & WAKE_PHY)
 404		adapter->wol |= IGC_WUFC_LNKC;
 405	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 406
 407	return 0;
 408}
 409
 410static u32 igc_ethtool_get_msglevel(struct net_device *netdev)
 411{
 412	struct igc_adapter *adapter = netdev_priv(netdev);
 413
 414	return adapter->msg_enable;
 415}
 416
 417static void igc_ethtool_set_msglevel(struct net_device *netdev, u32 data)
 418{
 419	struct igc_adapter *adapter = netdev_priv(netdev);
 420
 421	adapter->msg_enable = data;
 422}
 423
 424static int igc_ethtool_nway_reset(struct net_device *netdev)
 425{
 426	struct igc_adapter *adapter = netdev_priv(netdev);
 427
 428	if (netif_running(netdev))
 429		igc_reinit_locked(adapter);
 430	return 0;
 431}
 432
 433static u32 igc_ethtool_get_link(struct net_device *netdev)
 434{
 435	struct igc_adapter *adapter = netdev_priv(netdev);
 436	struct igc_mac_info *mac = &adapter->hw.mac;
 437
 438	/* If the link is not reported up to netdev, interrupts are disabled,
 439	 * and so the physical link state may have changed since we last
 440	 * looked. Set get_link_status to make sure that the true link
 441	 * state is interrogated, rather than pulling a cached and possibly
 442	 * stale link state from the driver.
 443	 */
 444	if (!netif_carrier_ok(netdev))
 445		mac->get_link_status = 1;
 446
 447	return igc_has_link(adapter);
 448}
 449
 450static int igc_ethtool_get_eeprom_len(struct net_device *netdev)
 451{
 452	struct igc_adapter *adapter = netdev_priv(netdev);
 453
 454	return adapter->hw.nvm.word_size * 2;
 455}
 456
 457static int igc_ethtool_get_eeprom(struct net_device *netdev,
 458				  struct ethtool_eeprom *eeprom, u8 *bytes)
 459{
 460	struct igc_adapter *adapter = netdev_priv(netdev);
 461	struct igc_hw *hw = &adapter->hw;
 462	int first_word, last_word;
 463	u16 *eeprom_buff;
 464	int ret_val = 0;
 465	u16 i;
 466
 467	if (eeprom->len == 0)
 468		return -EINVAL;
 469
 470	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
 471
 472	first_word = eeprom->offset >> 1;
 473	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
 474
 475	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
 476				    GFP_KERNEL);
 477	if (!eeprom_buff)
 478		return -ENOMEM;
 479
 480	if (hw->nvm.type == igc_nvm_eeprom_spi) {
 481		ret_val = hw->nvm.ops.read(hw, first_word,
 482					   last_word - first_word + 1,
 483					   eeprom_buff);
 484	} else {
 485		for (i = 0; i < last_word - first_word + 1; i++) {
 486			ret_val = hw->nvm.ops.read(hw, first_word + i, 1,
 487						   &eeprom_buff[i]);
 488			if (ret_val)
 489				break;
 490		}
 491	}
 492
 493	/* Device's eeprom is always little-endian, word addressable */
 494	for (i = 0; i < last_word - first_word + 1; i++)
 495		le16_to_cpus(&eeprom_buff[i]);
 496
 497	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1),
 498	       eeprom->len);
 499	kfree(eeprom_buff);
 500
 501	return ret_val;
 502}
 503
 504static int igc_ethtool_set_eeprom(struct net_device *netdev,
 505				  struct ethtool_eeprom *eeprom, u8 *bytes)
 506{
 507	struct igc_adapter *adapter = netdev_priv(netdev);
 508	struct igc_hw *hw = &adapter->hw;
 509	int max_len, first_word, last_word, ret_val = 0;
 510	u16 *eeprom_buff;
 511	void *ptr;
 512	u16 i;
 513
 514	if (eeprom->len == 0)
 515		return -EOPNOTSUPP;
 516
 517	if (hw->mac.type >= igc_i225 &&
 518	    !igc_get_flash_presence_i225(hw)) {
 519		return -EOPNOTSUPP;
 520	}
 521
 522	if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
 523		return -EFAULT;
 524
 525	max_len = hw->nvm.word_size * 2;
 526
 527	first_word = eeprom->offset >> 1;
 528	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
 529	eeprom_buff = kmalloc(max_len, GFP_KERNEL);
 530	if (!eeprom_buff)
 531		return -ENOMEM;
 532
 533	ptr = (void *)eeprom_buff;
 534
 535	if (eeprom->offset & 1) {
 536		/* need read/modify/write of first changed EEPROM word
 537		 * only the second byte of the word is being modified
 538		 */
 539		ret_val = hw->nvm.ops.read(hw, first_word, 1,
 540					    &eeprom_buff[0]);
 541		ptr++;
 542	}
 543	if (((eeprom->offset + eeprom->len) & 1) && ret_val == 0) {
 544		/* need read/modify/write of last changed EEPROM word
 545		 * only the first byte of the word is being modified
 546		 */
 547		ret_val = hw->nvm.ops.read(hw, last_word, 1,
 548				   &eeprom_buff[last_word - first_word]);
 549	}
 550
 551	/* Device's eeprom is always little-endian, word addressable */
 552	for (i = 0; i < last_word - first_word + 1; i++)
 553		le16_to_cpus(&eeprom_buff[i]);
 554
 555	memcpy(ptr, bytes, eeprom->len);
 556
 557	for (i = 0; i < last_word - first_word + 1; i++)
 558		cpu_to_le16s(&eeprom_buff[i]);
 559
 560	ret_val = hw->nvm.ops.write(hw, first_word,
 561				    last_word - first_word + 1, eeprom_buff);
 562
 563	/* Update the checksum if nvm write succeeded */
 564	if (ret_val == 0)
 565		hw->nvm.ops.update(hw);
 566
 
 567	kfree(eeprom_buff);
 568	return ret_val;
 569}
 570
 571static void
 572igc_ethtool_get_ringparam(struct net_device *netdev,
 573			  struct ethtool_ringparam *ring,
 574			  struct kernel_ethtool_ringparam *kernel_ering,
 575			  struct netlink_ext_ack *extack)
 576{
 577	struct igc_adapter *adapter = netdev_priv(netdev);
 578
 579	ring->rx_max_pending = IGC_MAX_RXD;
 580	ring->tx_max_pending = IGC_MAX_TXD;
 581	ring->rx_pending = adapter->rx_ring_count;
 582	ring->tx_pending = adapter->tx_ring_count;
 583}
 584
 585static int
 586igc_ethtool_set_ringparam(struct net_device *netdev,
 587			  struct ethtool_ringparam *ring,
 588			  struct kernel_ethtool_ringparam *kernel_ering,
 589			  struct netlink_ext_ack *extack)
 590{
 591	struct igc_adapter *adapter = netdev_priv(netdev);
 592	struct igc_ring *temp_ring;
 593	u16 new_rx_count, new_tx_count;
 594	int i, err = 0;
 595
 596	if (ring->rx_mini_pending || ring->rx_jumbo_pending)
 597		return -EINVAL;
 598
 599	new_rx_count = min_t(u32, ring->rx_pending, IGC_MAX_RXD);
 600	new_rx_count = max_t(u16, new_rx_count, IGC_MIN_RXD);
 601	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
 602
 603	new_tx_count = min_t(u32, ring->tx_pending, IGC_MAX_TXD);
 604	new_tx_count = max_t(u16, new_tx_count, IGC_MIN_TXD);
 605	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
 606
 607	if (new_tx_count == adapter->tx_ring_count &&
 608	    new_rx_count == adapter->rx_ring_count) {
 609		/* nothing to do */
 610		return 0;
 611	}
 612
 613	while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
 614		usleep_range(1000, 2000);
 615
 616	if (!netif_running(adapter->netdev)) {
 617		for (i = 0; i < adapter->num_tx_queues; i++)
 618			adapter->tx_ring[i]->count = new_tx_count;
 619		for (i = 0; i < adapter->num_rx_queues; i++)
 620			adapter->rx_ring[i]->count = new_rx_count;
 621		adapter->tx_ring_count = new_tx_count;
 622		adapter->rx_ring_count = new_rx_count;
 623		goto clear_reset;
 624	}
 625
 626	if (adapter->num_tx_queues > adapter->num_rx_queues)
 627		temp_ring = vmalloc(array_size(sizeof(struct igc_ring),
 628					       adapter->num_tx_queues));
 629	else
 630		temp_ring = vmalloc(array_size(sizeof(struct igc_ring),
 631					       adapter->num_rx_queues));
 632
 633	if (!temp_ring) {
 634		err = -ENOMEM;
 635		goto clear_reset;
 636	}
 637
 638	igc_down(adapter);
 639
 640	/* We can't just free everything and then setup again,
 641	 * because the ISRs in MSI-X mode get passed pointers
 642	 * to the Tx and Rx ring structs.
 643	 */
 644	if (new_tx_count != adapter->tx_ring_count) {
 645		for (i = 0; i < adapter->num_tx_queues; i++) {
 646			memcpy(&temp_ring[i], adapter->tx_ring[i],
 647			       sizeof(struct igc_ring));
 648
 649			temp_ring[i].count = new_tx_count;
 650			err = igc_setup_tx_resources(&temp_ring[i]);
 651			if (err) {
 652				while (i) {
 653					i--;
 654					igc_free_tx_resources(&temp_ring[i]);
 655				}
 656				goto err_setup;
 657			}
 658		}
 659
 660		for (i = 0; i < adapter->num_tx_queues; i++) {
 661			igc_free_tx_resources(adapter->tx_ring[i]);
 662
 663			memcpy(adapter->tx_ring[i], &temp_ring[i],
 664			       sizeof(struct igc_ring));
 665		}
 666
 667		adapter->tx_ring_count = new_tx_count;
 668	}
 669
 670	if (new_rx_count != adapter->rx_ring_count) {
 671		for (i = 0; i < adapter->num_rx_queues; i++) {
 672			memcpy(&temp_ring[i], adapter->rx_ring[i],
 673			       sizeof(struct igc_ring));
 674
 675			temp_ring[i].count = new_rx_count;
 676			err = igc_setup_rx_resources(&temp_ring[i]);
 677			if (err) {
 678				while (i) {
 679					i--;
 680					igc_free_rx_resources(&temp_ring[i]);
 681				}
 682				goto err_setup;
 683			}
 684		}
 685
 686		for (i = 0; i < adapter->num_rx_queues; i++) {
 687			igc_free_rx_resources(adapter->rx_ring[i]);
 688
 689			memcpy(adapter->rx_ring[i], &temp_ring[i],
 690			       sizeof(struct igc_ring));
 691		}
 692
 693		adapter->rx_ring_count = new_rx_count;
 694	}
 695err_setup:
 696	igc_up(adapter);
 697	vfree(temp_ring);
 698clear_reset:
 699	clear_bit(__IGC_RESETTING, &adapter->state);
 700	return err;
 701}
 702
 703static void igc_ethtool_get_pauseparam(struct net_device *netdev,
 704				       struct ethtool_pauseparam *pause)
 705{
 706	struct igc_adapter *adapter = netdev_priv(netdev);
 707	struct igc_hw *hw = &adapter->hw;
 708
 709	pause->autoneg =
 710		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
 711
 712	if (hw->fc.current_mode == igc_fc_rx_pause) {
 713		pause->rx_pause = 1;
 714	} else if (hw->fc.current_mode == igc_fc_tx_pause) {
 715		pause->tx_pause = 1;
 716	} else if (hw->fc.current_mode == igc_fc_full) {
 717		pause->rx_pause = 1;
 718		pause->tx_pause = 1;
 719	}
 720}
 721
 722static int igc_ethtool_set_pauseparam(struct net_device *netdev,
 723				      struct ethtool_pauseparam *pause)
 724{
 725	struct igc_adapter *adapter = netdev_priv(netdev);
 726	struct igc_hw *hw = &adapter->hw;
 727	int retval = 0;
 728
 729	adapter->fc_autoneg = pause->autoneg;
 730
 731	while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
 732		usleep_range(1000, 2000);
 733
 734	if (adapter->fc_autoneg == AUTONEG_ENABLE) {
 735		hw->fc.requested_mode = igc_fc_default;
 736		if (netif_running(adapter->netdev)) {
 737			igc_down(adapter);
 738			igc_up(adapter);
 739		} else {
 740			igc_reset(adapter);
 741		}
 742	} else {
 743		if (pause->rx_pause && pause->tx_pause)
 744			hw->fc.requested_mode = igc_fc_full;
 745		else if (pause->rx_pause && !pause->tx_pause)
 746			hw->fc.requested_mode = igc_fc_rx_pause;
 747		else if (!pause->rx_pause && pause->tx_pause)
 748			hw->fc.requested_mode = igc_fc_tx_pause;
 749		else if (!pause->rx_pause && !pause->tx_pause)
 750			hw->fc.requested_mode = igc_fc_none;
 751
 752		hw->fc.current_mode = hw->fc.requested_mode;
 753
 754		retval = ((hw->phy.media_type == igc_media_type_copper) ?
 755			  igc_force_mac_fc(hw) : igc_setup_link(hw));
 756	}
 757
 758	clear_bit(__IGC_RESETTING, &adapter->state);
 759	return retval;
 760}
 761
 762static void igc_ethtool_get_strings(struct net_device *netdev, u32 stringset,
 763				    u8 *data)
 764{
 765	struct igc_adapter *adapter = netdev_priv(netdev);
 766	u8 *p = data;
 767	int i;
 768
 769	switch (stringset) {
 770	case ETH_SS_TEST:
 771		memcpy(data, *igc_gstrings_test,
 772		       IGC_TEST_LEN * ETH_GSTRING_LEN);
 773		break;
 774	case ETH_SS_STATS:
 775		for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++)
 776			ethtool_puts(&p, igc_gstrings_stats[i].stat_string);
 777		for (i = 0; i < IGC_NETDEV_STATS_LEN; i++)
 778			ethtool_puts(&p, igc_gstrings_net_stats[i].stat_string);
 
 
 
 
 
 
 779		for (i = 0; i < adapter->num_tx_queues; i++) {
 780			ethtool_sprintf(&p, "tx_queue_%u_packets", i);
 781			ethtool_sprintf(&p, "tx_queue_%u_bytes", i);
 782			ethtool_sprintf(&p, "tx_queue_%u_restart", i);
 
 
 
 783		}
 784		for (i = 0; i < adapter->num_rx_queues; i++) {
 785			ethtool_sprintf(&p, "rx_queue_%u_packets", i);
 786			ethtool_sprintf(&p, "rx_queue_%u_bytes", i);
 787			ethtool_sprintf(&p, "rx_queue_%u_drops", i);
 788			ethtool_sprintf(&p, "rx_queue_%u_csum_err", i);
 789			ethtool_sprintf(&p, "rx_queue_%u_alloc_failed", i);
 
 
 
 
 
 790		}
 791		/* BUG_ON(p - data != IGC_STATS_LEN * ETH_GSTRING_LEN); */
 792		break;
 793	case ETH_SS_PRIV_FLAGS:
 794		memcpy(data, igc_priv_flags_strings,
 795		       IGC_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
 796		break;
 797	}
 798}
 799
 800static int igc_ethtool_get_sset_count(struct net_device *netdev, int sset)
 801{
 802	switch (sset) {
 803	case ETH_SS_STATS:
 804		return IGC_STATS_LEN;
 805	case ETH_SS_TEST:
 806		return IGC_TEST_LEN;
 807	case ETH_SS_PRIV_FLAGS:
 808		return IGC_PRIV_FLAGS_STR_LEN;
 809	default:
 810		return -ENOTSUPP;
 811	}
 812}
 813
 814static void igc_ethtool_get_stats(struct net_device *netdev,
 815				  struct ethtool_stats *stats, u64 *data)
 816{
 817	struct igc_adapter *adapter = netdev_priv(netdev);
 818	struct rtnl_link_stats64 *net_stats = &adapter->stats64;
 819	unsigned int start;
 820	struct igc_ring *ring;
 821	int i, j;
 822	char *p;
 823
 824	spin_lock(&adapter->stats64_lock);
 825	igc_update_stats(adapter);
 826
 827	for (i = 0; i < IGC_GLOBAL_STATS_LEN; i++) {
 828		p = (char *)adapter + igc_gstrings_stats[i].stat_offset;
 829		data[i] = (igc_gstrings_stats[i].sizeof_stat ==
 830			sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 831	}
 832	for (j = 0; j < IGC_NETDEV_STATS_LEN; j++, i++) {
 833		p = (char *)net_stats + igc_gstrings_net_stats[j].stat_offset;
 834		data[i] = (igc_gstrings_net_stats[j].sizeof_stat ==
 835			sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 836	}
 837	for (j = 0; j < adapter->num_tx_queues; j++) {
 838		u64	restart2;
 839
 840		ring = adapter->tx_ring[j];
 841		do {
 842			start = u64_stats_fetch_begin(&ring->tx_syncp);
 843			data[i]   = ring->tx_stats.packets;
 844			data[i + 1] = ring->tx_stats.bytes;
 845			data[i + 2] = ring->tx_stats.restart_queue;
 846		} while (u64_stats_fetch_retry(&ring->tx_syncp, start));
 847		do {
 848			start = u64_stats_fetch_begin(&ring->tx_syncp2);
 849			restart2  = ring->tx_stats.restart_queue2;
 850		} while (u64_stats_fetch_retry(&ring->tx_syncp2, start));
 851		data[i + 2] += restart2;
 852
 853		i += IGC_TX_QUEUE_STATS_LEN;
 854	}
 855	for (j = 0; j < adapter->num_rx_queues; j++) {
 856		ring = adapter->rx_ring[j];
 857		do {
 858			start = u64_stats_fetch_begin(&ring->rx_syncp);
 859			data[i]   = ring->rx_stats.packets;
 860			data[i + 1] = ring->rx_stats.bytes;
 861			data[i + 2] = ring->rx_stats.drops;
 862			data[i + 3] = ring->rx_stats.csum_err;
 863			data[i + 4] = ring->rx_stats.alloc_failed;
 864		} while (u64_stats_fetch_retry(&ring->rx_syncp, start));
 865		i += IGC_RX_QUEUE_STATS_LEN;
 866	}
 867	spin_unlock(&adapter->stats64_lock);
 868}
 869
 870static int igc_ethtool_get_previous_rx_coalesce(struct igc_adapter *adapter)
 871{
 872	return (adapter->rx_itr_setting <= 3) ?
 873		adapter->rx_itr_setting : adapter->rx_itr_setting >> 2;
 874}
 875
 876static int igc_ethtool_get_previous_tx_coalesce(struct igc_adapter *adapter)
 877{
 878	return (adapter->tx_itr_setting <= 3) ?
 879		adapter->tx_itr_setting : adapter->tx_itr_setting >> 2;
 880}
 881
 882static int igc_ethtool_get_coalesce(struct net_device *netdev,
 883				    struct ethtool_coalesce *ec,
 884				    struct kernel_ethtool_coalesce *kernel_coal,
 885				    struct netlink_ext_ack *extack)
 886{
 887	struct igc_adapter *adapter = netdev_priv(netdev);
 888
 889	ec->rx_coalesce_usecs = igc_ethtool_get_previous_rx_coalesce(adapter);
 890	ec->tx_coalesce_usecs = igc_ethtool_get_previous_tx_coalesce(adapter);
 
 
 
 
 
 
 
 
 
 891
 892	return 0;
 893}
 894
 895static int igc_ethtool_set_coalesce(struct net_device *netdev,
 896				    struct ethtool_coalesce *ec,
 897				    struct kernel_ethtool_coalesce *kernel_coal,
 898				    struct netlink_ext_ack *extack)
 899{
 900	struct igc_adapter *adapter = netdev_priv(netdev);
 901	int i;
 902
 903	if (ec->rx_coalesce_usecs > IGC_MAX_ITR_USECS ||
 904	    (ec->rx_coalesce_usecs > 3 &&
 905	     ec->rx_coalesce_usecs < IGC_MIN_ITR_USECS) ||
 906	    ec->rx_coalesce_usecs == 2)
 907		return -EINVAL;
 908
 909	if (ec->tx_coalesce_usecs > IGC_MAX_ITR_USECS ||
 910	    (ec->tx_coalesce_usecs > 3 &&
 911	     ec->tx_coalesce_usecs < IGC_MIN_ITR_USECS) ||
 912	    ec->tx_coalesce_usecs == 2)
 913		return -EINVAL;
 914
 915	if ((adapter->flags & IGC_FLAG_QUEUE_PAIRS) &&
 916	    ec->tx_coalesce_usecs != igc_ethtool_get_previous_tx_coalesce(adapter)) {
 917		NL_SET_ERR_MSG_MOD(extack,
 918				   "Queue Pair mode enabled, both Rx and Tx coalescing controlled by rx-usecs");
 919		return -EINVAL;
 920	}
 921
 922	/* If ITR is disabled, disable DMAC */
 923	if (ec->rx_coalesce_usecs == 0) {
 924		if (adapter->flags & IGC_FLAG_DMAC)
 925			adapter->flags &= ~IGC_FLAG_DMAC;
 926	}
 927
 928	/* convert to rate of irq's per second */
 929	if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3)
 930		adapter->rx_itr_setting = ec->rx_coalesce_usecs;
 931	else
 932		adapter->rx_itr_setting = ec->rx_coalesce_usecs << 2;
 933
 934	/* convert to rate of irq's per second */
 935	if (adapter->flags & IGC_FLAG_QUEUE_PAIRS)
 936		adapter->tx_itr_setting = adapter->rx_itr_setting;
 937	else if (ec->tx_coalesce_usecs && ec->tx_coalesce_usecs <= 3)
 938		adapter->tx_itr_setting = ec->tx_coalesce_usecs;
 939	else
 940		adapter->tx_itr_setting = ec->tx_coalesce_usecs << 2;
 941
 942	for (i = 0; i < adapter->num_q_vectors; i++) {
 943		struct igc_q_vector *q_vector = adapter->q_vector[i];
 944
 945		q_vector->tx.work_limit = adapter->tx_work_limit;
 946		if (q_vector->rx.ring)
 947			q_vector->itr_val = adapter->rx_itr_setting;
 948		else
 949			q_vector->itr_val = adapter->tx_itr_setting;
 950		if (q_vector->itr_val && q_vector->itr_val <= 3)
 951			q_vector->itr_val = IGC_START_ITR;
 952		q_vector->set_itr = 1;
 953	}
 954
 955	return 0;
 956}
 957
 958#define ETHER_TYPE_FULL_MASK ((__force __be16)~0)
 959#define VLAN_TCI_FULL_MASK ((__force __be16)~0)
 960static int igc_ethtool_get_nfc_rule(struct igc_adapter *adapter,
 961				    struct ethtool_rxnfc *cmd)
 962{
 963	struct ethtool_rx_flow_spec *fsp = &cmd->fs;
 964	struct igc_nfc_rule *rule = NULL;
 965
 966	cmd->data = IGC_MAX_RXNFC_RULES;
 967
 968	mutex_lock(&adapter->nfc_rule_lock);
 969
 970	rule = igc_get_nfc_rule(adapter, fsp->location);
 971	if (!rule)
 972		goto out;
 973
 974	fsp->flow_type = ETHER_FLOW;
 975	fsp->ring_cookie = rule->action;
 976
 977	if (rule->filter.match_flags & IGC_FILTER_FLAG_ETHER_TYPE) {
 978		fsp->h_u.ether_spec.h_proto = htons(rule->filter.etype);
 979		fsp->m_u.ether_spec.h_proto = ETHER_TYPE_FULL_MASK;
 980	}
 981
 982	if (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_ETYPE) {
 983		fsp->flow_type |= FLOW_EXT;
 984		fsp->h_ext.vlan_etype = htons(rule->filter.vlan_etype);
 985		fsp->m_ext.vlan_etype = ETHER_TYPE_FULL_MASK;
 986	}
 987
 988	if (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_TCI) {
 989		fsp->flow_type |= FLOW_EXT;
 990		fsp->h_ext.vlan_tci = htons(rule->filter.vlan_tci);
 991		fsp->m_ext.vlan_tci = htons(rule->filter.vlan_tci_mask);
 992	}
 993
 994	if (rule->filter.match_flags & IGC_FILTER_FLAG_DST_MAC_ADDR) {
 995		ether_addr_copy(fsp->h_u.ether_spec.h_dest,
 996				rule->filter.dst_addr);
 997		eth_broadcast_addr(fsp->m_u.ether_spec.h_dest);
 998	}
 999
1000	if (rule->filter.match_flags & IGC_FILTER_FLAG_SRC_MAC_ADDR) {
1001		ether_addr_copy(fsp->h_u.ether_spec.h_source,
1002				rule->filter.src_addr);
1003		eth_broadcast_addr(fsp->m_u.ether_spec.h_source);
1004	}
1005
1006	if (rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) {
1007		fsp->flow_type |= FLOW_EXT;
1008		memcpy(fsp->h_ext.data, rule->filter.user_data, sizeof(fsp->h_ext.data));
1009		memcpy(fsp->m_ext.data, rule->filter.user_mask, sizeof(fsp->m_ext.data));
1010	}
1011
1012	mutex_unlock(&adapter->nfc_rule_lock);
1013	return 0;
1014
1015out:
1016	mutex_unlock(&adapter->nfc_rule_lock);
1017	return -EINVAL;
1018}
1019
1020static int igc_ethtool_get_nfc_rules(struct igc_adapter *adapter,
1021				     struct ethtool_rxnfc *cmd,
1022				     u32 *rule_locs)
1023{
1024	struct igc_nfc_rule *rule;
1025	int cnt = 0;
1026
1027	cmd->data = IGC_MAX_RXNFC_RULES;
1028
1029	mutex_lock(&adapter->nfc_rule_lock);
1030
1031	list_for_each_entry(rule, &adapter->nfc_rule_list, list) {
1032		if (cnt == cmd->rule_cnt) {
1033			mutex_unlock(&adapter->nfc_rule_lock);
1034			return -EMSGSIZE;
1035		}
1036		rule_locs[cnt] = rule->location;
1037		cnt++;
1038	}
1039
1040	mutex_unlock(&adapter->nfc_rule_lock);
1041
1042	cmd->rule_cnt = cnt;
1043
1044	return 0;
1045}
1046
1047static int igc_ethtool_get_rss_hash_opts(struct igc_adapter *adapter,
1048					 struct ethtool_rxnfc *cmd)
1049{
1050	cmd->data = 0;
1051
1052	/* Report default options for RSS on igc */
1053	switch (cmd->flow_type) {
1054	case TCP_V4_FLOW:
1055		cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1056		fallthrough;
1057	case UDP_V4_FLOW:
1058		if (adapter->flags & IGC_FLAG_RSS_FIELD_IPV4_UDP)
1059			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1060		fallthrough;
1061	case SCTP_V4_FLOW:
1062	case AH_ESP_V4_FLOW:
1063	case AH_V4_FLOW:
1064	case ESP_V4_FLOW:
1065	case IPV4_FLOW:
1066		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1067		break;
1068	case TCP_V6_FLOW:
1069		cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1070		fallthrough;
1071	case UDP_V6_FLOW:
1072		if (adapter->flags & IGC_FLAG_RSS_FIELD_IPV6_UDP)
1073			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
1074		fallthrough;
1075	case SCTP_V6_FLOW:
1076	case AH_ESP_V6_FLOW:
1077	case AH_V6_FLOW:
1078	case ESP_V6_FLOW:
1079	case IPV6_FLOW:
1080		cmd->data |= RXH_IP_SRC | RXH_IP_DST;
1081		break;
1082	default:
1083		return -EINVAL;
1084	}
1085
1086	return 0;
1087}
1088
1089static int igc_ethtool_get_rxnfc(struct net_device *dev,
1090				 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1091{
1092	struct igc_adapter *adapter = netdev_priv(dev);
1093
1094	switch (cmd->cmd) {
1095	case ETHTOOL_GRXRINGS:
1096		cmd->data = adapter->num_rx_queues;
1097		return 0;
1098	case ETHTOOL_GRXCLSRLCNT:
1099		cmd->rule_cnt = adapter->nfc_rule_count;
1100		return 0;
1101	case ETHTOOL_GRXCLSRULE:
1102		return igc_ethtool_get_nfc_rule(adapter, cmd);
1103	case ETHTOOL_GRXCLSRLALL:
1104		return igc_ethtool_get_nfc_rules(adapter, cmd, rule_locs);
1105	case ETHTOOL_GRXFH:
1106		return igc_ethtool_get_rss_hash_opts(adapter, cmd);
1107	default:
1108		return -EOPNOTSUPP;
1109	}
1110}
1111
1112#define UDP_RSS_FLAGS (IGC_FLAG_RSS_FIELD_IPV4_UDP | \
1113		       IGC_FLAG_RSS_FIELD_IPV6_UDP)
1114static int igc_ethtool_set_rss_hash_opt(struct igc_adapter *adapter,
1115					struct ethtool_rxnfc *nfc)
1116{
1117	u32 flags = adapter->flags;
1118
1119	/* RSS does not support anything other than hashing
1120	 * to queues on src and dst IPs and ports
1121	 */
1122	if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
1123			  RXH_L4_B_0_1 | RXH_L4_B_2_3))
1124		return -EINVAL;
1125
1126	switch (nfc->flow_type) {
1127	case TCP_V4_FLOW:
1128	case TCP_V6_FLOW:
1129		if (!(nfc->data & RXH_IP_SRC) ||
1130		    !(nfc->data & RXH_IP_DST) ||
1131		    !(nfc->data & RXH_L4_B_0_1) ||
1132		    !(nfc->data & RXH_L4_B_2_3))
1133			return -EINVAL;
1134		break;
1135	case UDP_V4_FLOW:
1136		if (!(nfc->data & RXH_IP_SRC) ||
1137		    !(nfc->data & RXH_IP_DST))
1138			return -EINVAL;
1139		switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1140		case 0:
1141			flags &= ~IGC_FLAG_RSS_FIELD_IPV4_UDP;
1142			break;
1143		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1144			flags |= IGC_FLAG_RSS_FIELD_IPV4_UDP;
1145			break;
1146		default:
1147			return -EINVAL;
1148		}
1149		break;
1150	case UDP_V6_FLOW:
1151		if (!(nfc->data & RXH_IP_SRC) ||
1152		    !(nfc->data & RXH_IP_DST))
1153			return -EINVAL;
1154		switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
1155		case 0:
1156			flags &= ~IGC_FLAG_RSS_FIELD_IPV6_UDP;
1157			break;
1158		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
1159			flags |= IGC_FLAG_RSS_FIELD_IPV6_UDP;
1160			break;
1161		default:
1162			return -EINVAL;
1163		}
1164		break;
1165	case AH_ESP_V4_FLOW:
1166	case AH_V4_FLOW:
1167	case ESP_V4_FLOW:
1168	case SCTP_V4_FLOW:
1169	case AH_ESP_V6_FLOW:
1170	case AH_V6_FLOW:
1171	case ESP_V6_FLOW:
1172	case SCTP_V6_FLOW:
1173		if (!(nfc->data & RXH_IP_SRC) ||
1174		    !(nfc->data & RXH_IP_DST) ||
1175		    (nfc->data & RXH_L4_B_0_1) ||
1176		    (nfc->data & RXH_L4_B_2_3))
1177			return -EINVAL;
1178		break;
1179	default:
1180		return -EINVAL;
1181	}
1182
1183	/* if we changed something we need to update flags */
1184	if (flags != adapter->flags) {
1185		struct igc_hw *hw = &adapter->hw;
1186		u32 mrqc = rd32(IGC_MRQC);
1187
1188		if ((flags & UDP_RSS_FLAGS) &&
1189		    !(adapter->flags & UDP_RSS_FLAGS))
1190			netdev_err(adapter->netdev,
1191				   "Enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
1192
1193		adapter->flags = flags;
1194
1195		/* Perform hash on these packet types */
1196		mrqc |= IGC_MRQC_RSS_FIELD_IPV4 |
1197			IGC_MRQC_RSS_FIELD_IPV4_TCP |
1198			IGC_MRQC_RSS_FIELD_IPV6 |
1199			IGC_MRQC_RSS_FIELD_IPV6_TCP;
1200
1201		mrqc &= ~(IGC_MRQC_RSS_FIELD_IPV4_UDP |
1202			  IGC_MRQC_RSS_FIELD_IPV6_UDP);
1203
1204		if (flags & IGC_FLAG_RSS_FIELD_IPV4_UDP)
1205			mrqc |= IGC_MRQC_RSS_FIELD_IPV4_UDP;
1206
1207		if (flags & IGC_FLAG_RSS_FIELD_IPV6_UDP)
1208			mrqc |= IGC_MRQC_RSS_FIELD_IPV6_UDP;
1209
1210		wr32(IGC_MRQC, mrqc);
1211	}
1212
1213	return 0;
1214}
1215
1216static void igc_ethtool_init_nfc_rule(struct igc_nfc_rule *rule,
1217				      const struct ethtool_rx_flow_spec *fsp)
1218{
1219	INIT_LIST_HEAD(&rule->list);
1220
1221	rule->action = fsp->ring_cookie;
1222	rule->location = fsp->location;
1223
1224	if ((fsp->flow_type & FLOW_EXT) && fsp->m_ext.vlan_tci) {
1225		rule->filter.vlan_tci = ntohs(fsp->h_ext.vlan_tci);
1226		rule->filter.vlan_tci_mask = ntohs(fsp->m_ext.vlan_tci);
1227		rule->filter.match_flags |= IGC_FILTER_FLAG_VLAN_TCI;
1228	}
1229
1230	if (fsp->m_u.ether_spec.h_proto == ETHER_TYPE_FULL_MASK) {
1231		rule->filter.etype = ntohs(fsp->h_u.ether_spec.h_proto);
1232		rule->filter.match_flags = IGC_FILTER_FLAG_ETHER_TYPE;
1233	}
1234
1235	/* Both source and destination address filters only support the full
1236	 * mask.
1237	 */
1238	if (is_broadcast_ether_addr(fsp->m_u.ether_spec.h_source)) {
1239		rule->filter.match_flags |= IGC_FILTER_FLAG_SRC_MAC_ADDR;
1240		ether_addr_copy(rule->filter.src_addr,
1241				fsp->h_u.ether_spec.h_source);
1242	}
1243
1244	if (is_broadcast_ether_addr(fsp->m_u.ether_spec.h_dest)) {
1245		rule->filter.match_flags |= IGC_FILTER_FLAG_DST_MAC_ADDR;
1246		ether_addr_copy(rule->filter.dst_addr,
1247				fsp->h_u.ether_spec.h_dest);
1248	}
1249
1250	/* VLAN etype matching */
1251	if ((fsp->flow_type & FLOW_EXT) && fsp->h_ext.vlan_etype) {
1252		rule->filter.vlan_etype = ntohs(fsp->h_ext.vlan_etype);
1253		rule->filter.match_flags |= IGC_FILTER_FLAG_VLAN_ETYPE;
1254	}
1255
1256	/* Check for user defined data */
1257	if ((fsp->flow_type & FLOW_EXT) &&
1258	    (fsp->h_ext.data[0] || fsp->h_ext.data[1])) {
1259		rule->filter.match_flags |= IGC_FILTER_FLAG_USER_DATA;
1260		memcpy(rule->filter.user_data, fsp->h_ext.data, sizeof(fsp->h_ext.data));
1261		memcpy(rule->filter.user_mask, fsp->m_ext.data, sizeof(fsp->m_ext.data));
1262	}
1263
1264	/* The i225/i226 has various different filters. Flex filters provide a
1265	 * way to match up to the first 128 bytes of a packet. Use them for:
1266	 *   a) For specific user data
1267	 *   b) For VLAN EtherType
1268	 *   c) For full TCI match
1269	 *   d) Or in case multiple filter criteria are set
1270	 *
1271	 * Otherwise, use the simple MAC, VLAN PRIO or EtherType filters.
1272	 */
1273	if ((rule->filter.match_flags & IGC_FILTER_FLAG_USER_DATA) ||
1274	    (rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_ETYPE) ||
1275	    ((rule->filter.match_flags & IGC_FILTER_FLAG_VLAN_TCI) &&
1276	     rule->filter.vlan_tci_mask == ntohs(VLAN_TCI_FULL_MASK)) ||
1277	    (rule->filter.match_flags & (rule->filter.match_flags - 1)))
1278		rule->flex = true;
1279	else
1280		rule->flex = false;
1281}
1282
1283/**
1284 * igc_ethtool_check_nfc_rule() - Check if NFC rule is valid
1285 * @adapter: Pointer to adapter
1286 * @rule: Rule under evaluation
1287 *
1288 * The driver doesn't support rules with multiple matches so if more than
1289 * one bit in filter flags is set, @rule is considered invalid.
1290 *
1291 * Also, if there is already another rule with the same filter in a different
1292 * location, @rule is considered invalid.
1293 *
1294 * Context: Expects adapter->nfc_rule_lock to be held by caller.
1295 *
1296 * Return: 0 in case of success, negative errno code otherwise.
1297 */
1298static int igc_ethtool_check_nfc_rule(struct igc_adapter *adapter,
1299				      struct igc_nfc_rule *rule)
1300{
1301	struct net_device *dev = adapter->netdev;
1302	u8 flags = rule->filter.match_flags;
1303	struct igc_nfc_rule *tmp;
1304
1305	if (!flags) {
1306		netdev_dbg(dev, "Rule with no match\n");
1307		return -EINVAL;
1308	}
1309
 
 
 
 
 
1310	list_for_each_entry(tmp, &adapter->nfc_rule_list, list) {
1311		if (!memcmp(&rule->filter, &tmp->filter,
1312			    sizeof(rule->filter)) &&
1313		    tmp->location != rule->location) {
1314			netdev_dbg(dev, "Rule already exists\n");
1315			return -EEXIST;
1316		}
1317	}
1318
1319	return 0;
1320}
1321
1322static int igc_ethtool_add_nfc_rule(struct igc_adapter *adapter,
1323				    struct ethtool_rxnfc *cmd)
1324{
1325	struct net_device *netdev = adapter->netdev;
1326	struct ethtool_rx_flow_spec *fsp =
1327		(struct ethtool_rx_flow_spec *)&cmd->fs;
1328	struct igc_nfc_rule *rule, *old_rule;
1329	int err;
1330
1331	if (!(netdev->hw_features & NETIF_F_NTUPLE)) {
1332		netdev_dbg(netdev, "N-tuple filters disabled\n");
1333		return -EOPNOTSUPP;
1334	}
1335
1336	if ((fsp->flow_type & ~FLOW_EXT) != ETHER_FLOW) {
1337		netdev_dbg(netdev, "Only ethernet flow type is supported\n");
1338		return -EOPNOTSUPP;
1339	}
1340
1341	if (fsp->ring_cookie >= adapter->num_rx_queues) {
1342		netdev_dbg(netdev, "Invalid action\n");
1343		return -EINVAL;
1344	}
1345
1346	/* There are two ways to match the VLAN TCI:
1347	 *  1. Match on PCP field and use vlan prio filter for it
1348	 *  2. Match on complete TCI field and use flex filter for it
1349	 */
1350	if ((fsp->flow_type & FLOW_EXT) &&
1351	    fsp->m_ext.vlan_tci &&
1352	    fsp->m_ext.vlan_tci != htons(VLAN_PRIO_MASK) &&
1353	    fsp->m_ext.vlan_tci != VLAN_TCI_FULL_MASK) {
1354		netdev_dbg(netdev, "VLAN mask not supported\n");
1355		return -EOPNOTSUPP;
1356	}
1357
1358	/* VLAN EtherType can only be matched by full mask. */
1359	if ((fsp->flow_type & FLOW_EXT) &&
1360	    fsp->m_ext.vlan_etype &&
1361	    fsp->m_ext.vlan_etype != ETHER_TYPE_FULL_MASK) {
1362		netdev_dbg(netdev, "VLAN EtherType mask not supported\n");
1363		return -EOPNOTSUPP;
1364	}
1365
1366	if (fsp->location >= IGC_MAX_RXNFC_RULES) {
1367		netdev_dbg(netdev, "Invalid location\n");
1368		return -EINVAL;
1369	}
1370
1371	rule = kzalloc(sizeof(*rule), GFP_KERNEL);
1372	if (!rule)
1373		return -ENOMEM;
1374
1375	igc_ethtool_init_nfc_rule(rule, fsp);
1376
1377	mutex_lock(&adapter->nfc_rule_lock);
1378
1379	err = igc_ethtool_check_nfc_rule(adapter, rule);
1380	if (err)
1381		goto err;
1382
1383	old_rule = igc_get_nfc_rule(adapter, fsp->location);
1384	if (old_rule)
1385		igc_del_nfc_rule(adapter, old_rule);
1386
1387	err = igc_add_nfc_rule(adapter, rule);
1388	if (err)
1389		goto err;
1390
1391	mutex_unlock(&adapter->nfc_rule_lock);
1392	return 0;
1393
1394err:
1395	mutex_unlock(&adapter->nfc_rule_lock);
1396	kfree(rule);
1397	return err;
1398}
1399
1400static int igc_ethtool_del_nfc_rule(struct igc_adapter *adapter,
1401				    struct ethtool_rxnfc *cmd)
1402{
1403	struct ethtool_rx_flow_spec *fsp =
1404		(struct ethtool_rx_flow_spec *)&cmd->fs;
1405	struct igc_nfc_rule *rule;
1406
1407	mutex_lock(&adapter->nfc_rule_lock);
1408
1409	rule = igc_get_nfc_rule(adapter, fsp->location);
1410	if (!rule) {
1411		mutex_unlock(&adapter->nfc_rule_lock);
1412		return -EINVAL;
1413	}
1414
1415	igc_del_nfc_rule(adapter, rule);
1416
1417	mutex_unlock(&adapter->nfc_rule_lock);
1418	return 0;
1419}
1420
1421static int igc_ethtool_set_rxnfc(struct net_device *dev,
1422				 struct ethtool_rxnfc *cmd)
1423{
1424	struct igc_adapter *adapter = netdev_priv(dev);
1425
1426	switch (cmd->cmd) {
1427	case ETHTOOL_SRXFH:
1428		return igc_ethtool_set_rss_hash_opt(adapter, cmd);
1429	case ETHTOOL_SRXCLSRLINS:
1430		return igc_ethtool_add_nfc_rule(adapter, cmd);
1431	case ETHTOOL_SRXCLSRLDEL:
1432		return igc_ethtool_del_nfc_rule(adapter, cmd);
1433	default:
1434		return -EOPNOTSUPP;
1435	}
1436}
1437
1438void igc_write_rss_indir_tbl(struct igc_adapter *adapter)
1439{
1440	struct igc_hw *hw = &adapter->hw;
1441	u32 reg = IGC_RETA(0);
1442	u32 shift = 0;
1443	int i = 0;
1444
1445	while (i < IGC_RETA_SIZE) {
1446		u32 val = 0;
1447		int j;
1448
1449		for (j = 3; j >= 0; j--) {
1450			val <<= 8;
1451			val |= adapter->rss_indir_tbl[i + j];
1452		}
1453
1454		wr32(reg, val << shift);
1455		reg += 4;
1456		i += 4;
1457	}
1458}
1459
1460static u32 igc_ethtool_get_rxfh_indir_size(struct net_device *netdev)
1461{
1462	return IGC_RETA_SIZE;
1463}
1464
1465static int igc_ethtool_get_rxfh(struct net_device *netdev,
1466				struct ethtool_rxfh_param *rxfh)
1467{
1468	struct igc_adapter *adapter = netdev_priv(netdev);
1469	int i;
1470
1471	rxfh->hfunc = ETH_RSS_HASH_TOP;
1472	if (!rxfh->indir)
 
1473		return 0;
1474	for (i = 0; i < IGC_RETA_SIZE; i++)
1475		rxfh->indir[i] = adapter->rss_indir_tbl[i];
1476
1477	return 0;
1478}
1479
1480static int igc_ethtool_set_rxfh(struct net_device *netdev,
1481				struct ethtool_rxfh_param *rxfh,
1482				struct netlink_ext_ack *extack)
1483{
1484	struct igc_adapter *adapter = netdev_priv(netdev);
1485	u32 num_queues;
1486	int i;
1487
1488	/* We do not allow change in unsupported parameters */
1489	if (rxfh->key ||
1490	    (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
1491	     rxfh->hfunc != ETH_RSS_HASH_TOP))
1492		return -EOPNOTSUPP;
1493	if (!rxfh->indir)
1494		return 0;
1495
1496	num_queues = adapter->rss_queues;
1497
1498	/* Verify user input. */
1499	for (i = 0; i < IGC_RETA_SIZE; i++)
1500		if (rxfh->indir[i] >= num_queues)
1501			return -EINVAL;
1502
1503	for (i = 0; i < IGC_RETA_SIZE; i++)
1504		adapter->rss_indir_tbl[i] = rxfh->indir[i];
1505
1506	igc_write_rss_indir_tbl(adapter);
1507
1508	return 0;
1509}
1510
1511static void igc_ethtool_get_channels(struct net_device *netdev,
1512				     struct ethtool_channels *ch)
1513{
1514	struct igc_adapter *adapter = netdev_priv(netdev);
1515
1516	/* Report maximum channels */
1517	ch->max_combined = igc_get_max_rss_queues(adapter);
1518
1519	/* Report info for other vector */
1520	if (adapter->flags & IGC_FLAG_HAS_MSIX) {
1521		ch->max_other = NON_Q_VECTORS;
1522		ch->other_count = NON_Q_VECTORS;
1523	}
1524
1525	ch->combined_count = adapter->rss_queues;
1526}
1527
1528static int igc_ethtool_set_channels(struct net_device *netdev,
1529				    struct ethtool_channels *ch)
1530{
1531	struct igc_adapter *adapter = netdev_priv(netdev);
1532	unsigned int count = ch->combined_count;
1533	unsigned int max_combined = 0;
1534
1535	/* Verify they are not requesting separate vectors */
1536	if (!count || ch->rx_count || ch->tx_count)
1537		return -EINVAL;
1538
1539	/* Verify other_count is valid and has not been changed */
1540	if (ch->other_count != NON_Q_VECTORS)
1541		return -EINVAL;
1542
1543	/* Do not allow channel reconfiguration when mqprio is enabled */
1544	if (adapter->strict_priority_enable)
1545		return -EINVAL;
1546
1547	/* Verify the number of channels doesn't exceed hw limits */
1548	max_combined = igc_get_max_rss_queues(adapter);
1549	if (count > max_combined)
1550		return -EINVAL;
1551
1552	if (count != adapter->rss_queues) {
1553		adapter->rss_queues = count;
1554		igc_set_flag_queue_pairs(adapter, max_combined);
1555
1556		/* Hardware has to reinitialize queues and interrupts to
1557		 * match the new configuration.
1558		 */
1559		return igc_reinit_queues(adapter);
1560	}
1561
1562	return 0;
1563}
1564
1565static int igc_ethtool_get_ts_info(struct net_device *dev,
1566				   struct kernel_ethtool_ts_info *info)
1567{
1568	struct igc_adapter *adapter = netdev_priv(dev);
1569
1570	if (adapter->ptp_clock)
1571		info->phc_index = ptp_clock_index(adapter->ptp_clock);
 
 
1572
1573	switch (adapter->hw.mac.type) {
1574	case igc_i225:
1575		info->so_timestamping =
1576			SOF_TIMESTAMPING_TX_SOFTWARE |
 
 
1577			SOF_TIMESTAMPING_TX_HARDWARE |
1578			SOF_TIMESTAMPING_RX_HARDWARE |
1579			SOF_TIMESTAMPING_RAW_HARDWARE;
1580
1581		info->tx_types =
1582			BIT(HWTSTAMP_TX_OFF) |
1583			BIT(HWTSTAMP_TX_ON);
1584
1585		info->rx_filters = BIT(HWTSTAMP_FILTER_NONE);
1586		info->rx_filters |= BIT(HWTSTAMP_FILTER_ALL);
1587
1588		return 0;
1589	default:
1590		return -EOPNOTSUPP;
1591	}
1592}
1593
1594static u32 igc_ethtool_get_priv_flags(struct net_device *netdev)
1595{
1596	struct igc_adapter *adapter = netdev_priv(netdev);
1597	u32 priv_flags = 0;
1598
1599	if (adapter->flags & IGC_FLAG_RX_LEGACY)
1600		priv_flags |= IGC_PRIV_FLAGS_LEGACY_RX;
1601
1602	return priv_flags;
1603}
1604
1605static int igc_ethtool_set_priv_flags(struct net_device *netdev, u32 priv_flags)
1606{
1607	struct igc_adapter *adapter = netdev_priv(netdev);
1608	unsigned int flags = adapter->flags;
1609
1610	flags &= ~IGC_FLAG_RX_LEGACY;
1611	if (priv_flags & IGC_PRIV_FLAGS_LEGACY_RX)
1612		flags |= IGC_FLAG_RX_LEGACY;
1613
1614	if (flags != adapter->flags) {
1615		adapter->flags = flags;
1616
1617		/* reset interface to repopulate queues */
1618		if (netif_running(netdev))
1619			igc_reinit_locked(adapter);
1620	}
1621
1622	return 0;
1623}
1624
1625static int igc_ethtool_get_eee(struct net_device *netdev,
1626			       struct ethtool_keee *edata)
1627{
1628	struct igc_adapter *adapter = netdev_priv(netdev);
1629	struct igc_hw *hw = &adapter->hw;
1630	struct igc_phy_info *phy = &hw->phy;
1631	u16 eee_advert, eee_lp_advert;
1632	u32 eeer, ret_val;
1633
1634	/* EEE supported */
1635	linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
1636			 edata->supported);
1637	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
1638			 edata->supported);
1639	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
1640			 edata->supported);
1641
1642	/* EEE Advertisement 1 - reg 7.60 */
1643	ret_val = phy->ops.read_reg(hw, (STANDARD_AN_REG_MASK <<
1644				    MMD_DEVADDR_SHIFT) |
1645				    IGC_ANEG_EEE_AB1,
1646				    &eee_advert);
1647	if (ret_val) {
1648		netdev_err(adapter->netdev,
1649			   "Failed to read IEEE 7.60 register\n");
1650		return -EINVAL;
1651	}
1652
1653	if (eee_advert & IGC_EEE_1000BT_MASK)
1654		linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
1655				 edata->advertised);
1656
1657	if (eee_advert & IGC_EEE_100BT_MASK)
1658		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
1659				 edata->advertised);
1660
1661	/* EEE Advertisement 2 - reg 7.62 */
1662	ret_val = phy->ops.read_reg(hw, (STANDARD_AN_REG_MASK <<
1663				    MMD_DEVADDR_SHIFT) |
1664				    IGC_ANEG_EEE_AB2,
1665				    &eee_advert);
1666	if (ret_val) {
1667		netdev_err(adapter->netdev,
1668			   "Failed to read IEEE 7.62 register\n");
1669		return -EINVAL;
1670	}
1671
1672	if (eee_advert & IGC_EEE_2500BT_MASK)
1673		linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
1674				 edata->advertised);
1675
1676	/* EEE Link-Partner Ability 1 - reg 7.61 */
1677	ret_val = phy->ops.read_reg(hw, (STANDARD_AN_REG_MASK <<
1678				    MMD_DEVADDR_SHIFT) |
1679				    IGC_ANEG_EEE_LP_AB1,
1680				    &eee_lp_advert);
1681	if (ret_val) {
1682		netdev_err(adapter->netdev,
1683			   "Failed to read IEEE 7.61 register\n");
1684		return -EINVAL;
1685	}
1686
1687	if (eee_lp_advert & IGC_LP_EEE_1000BT_MASK)
1688		linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
1689				 edata->lp_advertised);
1690
1691	if (eee_lp_advert & IGC_LP_EEE_100BT_MASK)
1692		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
1693				 edata->lp_advertised);
1694
1695	/* EEE Link-Partner Ability 2 - reg 7.63 */
1696	ret_val = phy->ops.read_reg(hw, (STANDARD_AN_REG_MASK <<
1697				    MMD_DEVADDR_SHIFT) |
1698				    IGC_ANEG_EEE_LP_AB2,
1699				    &eee_lp_advert);
1700	if (ret_val) {
1701		netdev_err(adapter->netdev,
1702			   "Failed to read IEEE 7.63 register\n");
1703		return -EINVAL;
1704	}
1705
1706	if (eee_lp_advert & IGC_LP_EEE_2500BT_MASK)
1707		linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
1708				 edata->lp_advertised);
1709
1710	eeer = rd32(IGC_EEER);
1711
1712	/* EEE status on negotiated link */
1713	if (eeer & IGC_EEER_EEE_NEG)
1714		edata->eee_active = true;
1715
1716	if (eeer & IGC_EEER_TX_LPI_EN)
1717		edata->tx_lpi_enabled = true;
1718
1719	edata->eee_enabled = hw->dev_spec._base.eee_enable;
1720
 
 
 
1721	/* Report correct negotiated EEE status for devices that
1722	 * wrongly report EEE at half-duplex
1723	 */
1724	if (adapter->link_duplex == HALF_DUPLEX) {
1725		edata->eee_enabled = false;
1726		edata->eee_active = false;
1727		edata->tx_lpi_enabled = false;
1728		linkmode_zero(edata->advertised);
1729	}
1730
1731	return 0;
1732}
1733
1734static int igc_ethtool_set_eee(struct net_device *netdev,
1735			       struct ethtool_keee *edata)
1736{
1737	struct igc_adapter *adapter = netdev_priv(netdev);
1738	struct igc_hw *hw = &adapter->hw;
1739	struct ethtool_keee eee_curr;
1740	s32 ret_val;
1741
1742	memset(&eee_curr, 0, sizeof(struct ethtool_keee));
1743
1744	ret_val = igc_ethtool_get_eee(netdev, &eee_curr);
1745	if (ret_val) {
1746		netdev_err(netdev,
1747			   "Problem setting EEE advertisement options\n");
1748		return -EINVAL;
1749	}
1750
1751	if (eee_curr.eee_enabled) {
1752		if (eee_curr.tx_lpi_enabled != edata->tx_lpi_enabled) {
1753			netdev_err(netdev,
1754				   "Setting EEE tx-lpi is not supported\n");
1755			return -EINVAL;
1756		}
1757
1758		/* Tx LPI timer is not implemented currently */
1759		if (edata->tx_lpi_timer) {
1760			netdev_err(netdev,
1761				   "Setting EEE Tx LPI timer is not supported\n");
1762			return -EINVAL;
1763		}
1764	} else if (!edata->eee_enabled) {
1765		netdev_err(netdev,
1766			   "Setting EEE options are not supported with EEE disabled\n");
1767		return -EINVAL;
1768	}
1769
 
1770	if (hw->dev_spec._base.eee_enable != edata->eee_enabled) {
1771		hw->dev_spec._base.eee_enable = edata->eee_enabled;
1772		adapter->flags |= IGC_FLAG_EEE;
1773
1774		/* reset link */
1775		if (netif_running(netdev))
1776			igc_reinit_locked(adapter);
1777		else
1778			igc_reset(adapter);
1779	}
1780
1781	return 0;
1782}
1783
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1784static int igc_ethtool_get_link_ksettings(struct net_device *netdev,
1785					  struct ethtool_link_ksettings *cmd)
1786{
1787	struct igc_adapter *adapter = netdev_priv(netdev);
1788	struct igc_hw *hw = &adapter->hw;
1789	u32 status;
1790	u32 speed;
1791
1792	ethtool_link_ksettings_zero_link_mode(cmd, supported);
1793	ethtool_link_ksettings_zero_link_mode(cmd, advertising);
1794
1795	/* supported link modes */
1796	ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Half);
1797	ethtool_link_ksettings_add_link_mode(cmd, supported, 10baseT_Full);
1798	ethtool_link_ksettings_add_link_mode(cmd, supported, 100baseT_Half);
1799	ethtool_link_ksettings_add_link_mode(cmd, supported, 100baseT_Full);
1800	ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full);
1801	ethtool_link_ksettings_add_link_mode(cmd, supported, 2500baseT_Full);
1802
1803	/* twisted pair */
1804	cmd->base.port = PORT_TP;
1805	cmd->base.phy_address = hw->phy.addr;
1806	ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
1807	ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
1808
1809	/* advertising link modes */
1810	if (hw->phy.autoneg_advertised & ADVERTISE_10_HALF)
1811		ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Half);
1812	if (hw->phy.autoneg_advertised & ADVERTISE_10_FULL)
1813		ethtool_link_ksettings_add_link_mode(cmd, advertising, 10baseT_Full);
1814	if (hw->phy.autoneg_advertised & ADVERTISE_100_HALF)
1815		ethtool_link_ksettings_add_link_mode(cmd, advertising, 100baseT_Half);
1816	if (hw->phy.autoneg_advertised & ADVERTISE_100_FULL)
1817		ethtool_link_ksettings_add_link_mode(cmd, advertising, 100baseT_Full);
1818	if (hw->phy.autoneg_advertised & ADVERTISE_1000_FULL)
1819		ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full);
1820	if (hw->phy.autoneg_advertised & ADVERTISE_2500_FULL)
1821		ethtool_link_ksettings_add_link_mode(cmd, advertising, 2500baseT_Full);
1822
1823	/* set autoneg settings */
1824	ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
1825	ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
1826
1827	/* Set pause flow control settings */
1828	ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
1829
1830	switch (hw->fc.requested_mode) {
1831	case igc_fc_full:
1832		ethtool_link_ksettings_add_link_mode(cmd, advertising, Pause);
1833		break;
1834	case igc_fc_rx_pause:
1835		ethtool_link_ksettings_add_link_mode(cmd, advertising, Pause);
1836		ethtool_link_ksettings_add_link_mode(cmd, advertising,
1837						     Asym_Pause);
1838		break;
1839	case igc_fc_tx_pause:
1840		ethtool_link_ksettings_add_link_mode(cmd, advertising,
1841						     Asym_Pause);
1842		break;
1843	default:
1844		break;
 
 
1845	}
1846
1847	status = pm_runtime_suspended(&adapter->pdev->dev) ?
1848		 0 : rd32(IGC_STATUS);
1849
1850	if (status & IGC_STATUS_LU) {
1851		if (status & IGC_STATUS_SPEED_1000) {
1852			/* For I225, STATUS will indicate 1G speed in both
1853			 * 1 Gbps and 2.5 Gbps link modes.
1854			 * An additional bit is used
1855			 * to differentiate between 1 Gbps and 2.5 Gbps.
1856			 */
1857			if (hw->mac.type == igc_i225 &&
1858			    (status & IGC_STATUS_SPEED_2500)) {
1859				speed = SPEED_2500;
1860			} else {
1861				speed = SPEED_1000;
1862			}
1863		} else if (status & IGC_STATUS_SPEED_100) {
1864			speed = SPEED_100;
1865		} else {
1866			speed = SPEED_10;
1867		}
1868		if ((status & IGC_STATUS_FD) ||
1869		    hw->phy.media_type != igc_media_type_copper)
1870			cmd->base.duplex = DUPLEX_FULL;
1871		else
1872			cmd->base.duplex = DUPLEX_HALF;
1873	} else {
1874		speed = SPEED_UNKNOWN;
1875		cmd->base.duplex = DUPLEX_UNKNOWN;
1876	}
1877	cmd->base.speed = speed;
1878	cmd->base.autoneg = AUTONEG_ENABLE;
 
 
 
1879
1880	/* MDI-X => 2; MDI =>1; Invalid =>0 */
1881	if (hw->phy.media_type == igc_media_type_copper)
1882		cmd->base.eth_tp_mdix = hw->phy.is_mdix ? ETH_TP_MDI_X :
1883						      ETH_TP_MDI;
1884	else
1885		cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
1886
1887	if (hw->phy.mdix == AUTO_ALL_MODES)
1888		cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
1889	else
1890		cmd->base.eth_tp_mdix_ctrl = hw->phy.mdix;
1891
1892	return 0;
1893}
1894
1895static int
1896igc_ethtool_set_link_ksettings(struct net_device *netdev,
1897			       const struct ethtool_link_ksettings *cmd)
1898{
1899	struct igc_adapter *adapter = netdev_priv(netdev);
1900	struct net_device *dev = adapter->netdev;
1901	struct igc_hw *hw = &adapter->hw;
1902	u16 advertised = 0;
1903
1904	/* When adapter in resetting mode, autoneg/speed/duplex
1905	 * cannot be changed
1906	 */
1907	if (igc_check_reset_block(hw)) {
1908		netdev_err(dev, "Cannot change link characteristics when reset is active\n");
1909		return -EINVAL;
1910	}
1911
1912	/* MDI setting is only allowed when autoneg enabled because
1913	 * some hardware doesn't allow MDI setting when speed or
1914	 * duplex is forced.
1915	 */
1916	if (cmd->base.eth_tp_mdix_ctrl) {
1917		if (cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO &&
1918		    cmd->base.autoneg != AUTONEG_ENABLE) {
1919			netdev_err(dev, "Forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
1920			return -EINVAL;
1921		}
1922	}
1923
1924	while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
1925		usleep_range(1000, 2000);
1926
1927	if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1928						  2500baseT_Full))
1929		advertised |= ADVERTISE_2500_FULL;
1930
1931	if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1932						  1000baseT_Full))
1933		advertised |= ADVERTISE_1000_FULL;
1934
1935	if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1936						  100baseT_Full))
1937		advertised |= ADVERTISE_100_FULL;
1938
1939	if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1940						  100baseT_Half))
1941		advertised |= ADVERTISE_100_HALF;
1942
1943	if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1944						  10baseT_Full))
1945		advertised |= ADVERTISE_10_FULL;
1946
1947	if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1948						  10baseT_Half))
1949		advertised |= ADVERTISE_10_HALF;
1950
1951	if (cmd->base.autoneg == AUTONEG_ENABLE) {
1952		hw->phy.autoneg_advertised = advertised;
 
1953		if (adapter->fc_autoneg)
1954			hw->fc.requested_mode = igc_fc_default;
1955	} else {
1956		netdev_info(dev, "Force mode currently not supported\n");
1957	}
1958
1959	/* MDI-X => 2; MDI => 1; Auto => 3 */
1960	if (cmd->base.eth_tp_mdix_ctrl) {
1961		/* fix up the value for auto (3 => 0) as zero is mapped
1962		 * internally to auto
1963		 */
1964		if (cmd->base.eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
1965			hw->phy.mdix = AUTO_ALL_MODES;
1966		else
1967			hw->phy.mdix = cmd->base.eth_tp_mdix_ctrl;
1968	}
1969
1970	/* reset the link */
1971	if (netif_running(adapter->netdev)) {
1972		igc_down(adapter);
1973		igc_up(adapter);
1974	} else {
1975		igc_reset(adapter);
1976	}
1977
1978	clear_bit(__IGC_RESETTING, &adapter->state);
1979
1980	return 0;
1981}
1982
1983static void igc_ethtool_diag_test(struct net_device *netdev,
1984				  struct ethtool_test *eth_test, u64 *data)
1985{
1986	struct igc_adapter *adapter = netdev_priv(netdev);
1987	bool if_running = netif_running(netdev);
1988
1989	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1990		netdev_info(adapter->netdev, "Offline testing starting");
1991		set_bit(__IGC_TESTING, &adapter->state);
1992
1993		/* Link test performed before hardware reset so autoneg doesn't
1994		 * interfere with test result
1995		 */
1996		if (!igc_link_test(adapter, &data[TEST_LINK]))
1997			eth_test->flags |= ETH_TEST_FL_FAILED;
1998
1999		if (if_running)
2000			igc_close(netdev);
2001		else
2002			igc_reset(adapter);
2003
2004		netdev_info(adapter->netdev, "Register testing starting");
2005		if (!igc_reg_test(adapter, &data[TEST_REG]))
2006			eth_test->flags |= ETH_TEST_FL_FAILED;
2007
2008		igc_reset(adapter);
2009
2010		netdev_info(adapter->netdev, "EEPROM testing starting");
2011		if (!igc_eeprom_test(adapter, &data[TEST_EEP]))
2012			eth_test->flags |= ETH_TEST_FL_FAILED;
2013
2014		igc_reset(adapter);
2015
2016		/* loopback and interrupt tests
2017		 * will be implemented in the future
2018		 */
2019		data[TEST_LOOP] = 0;
2020		data[TEST_IRQ] = 0;
2021
2022		clear_bit(__IGC_TESTING, &adapter->state);
2023		if (if_running)
2024			igc_open(netdev);
2025	} else {
2026		netdev_info(adapter->netdev, "Online testing starting");
2027
2028		/* register, eeprom, intr and loopback tests not run online */
2029		data[TEST_REG] = 0;
2030		data[TEST_EEP] = 0;
2031		data[TEST_IRQ] = 0;
2032		data[TEST_LOOP] = 0;
2033
2034		if (!igc_link_test(adapter, &data[TEST_LINK]))
2035			eth_test->flags |= ETH_TEST_FL_FAILED;
2036	}
2037
2038	msleep_interruptible(4 * 1000);
2039}
2040
2041static const struct ethtool_ops igc_ethtool_ops = {
2042	.supported_coalesce_params = ETHTOOL_COALESCE_USECS,
2043	.get_drvinfo		= igc_ethtool_get_drvinfo,
2044	.get_regs_len		= igc_ethtool_get_regs_len,
2045	.get_regs		= igc_ethtool_get_regs,
2046	.get_wol		= igc_ethtool_get_wol,
2047	.set_wol		= igc_ethtool_set_wol,
2048	.get_msglevel		= igc_ethtool_get_msglevel,
2049	.set_msglevel		= igc_ethtool_set_msglevel,
2050	.nway_reset		= igc_ethtool_nway_reset,
2051	.get_link		= igc_ethtool_get_link,
2052	.get_eeprom_len		= igc_ethtool_get_eeprom_len,
2053	.get_eeprom		= igc_ethtool_get_eeprom,
2054	.set_eeprom		= igc_ethtool_set_eeprom,
2055	.get_ringparam		= igc_ethtool_get_ringparam,
2056	.set_ringparam		= igc_ethtool_set_ringparam,
2057	.get_pauseparam		= igc_ethtool_get_pauseparam,
2058	.set_pauseparam		= igc_ethtool_set_pauseparam,
2059	.get_strings		= igc_ethtool_get_strings,
2060	.get_sset_count		= igc_ethtool_get_sset_count,
2061	.get_ethtool_stats	= igc_ethtool_get_stats,
2062	.get_coalesce		= igc_ethtool_get_coalesce,
2063	.set_coalesce		= igc_ethtool_set_coalesce,
2064	.get_rxnfc		= igc_ethtool_get_rxnfc,
2065	.set_rxnfc		= igc_ethtool_set_rxnfc,
2066	.get_rxfh_indir_size	= igc_ethtool_get_rxfh_indir_size,
2067	.get_rxfh		= igc_ethtool_get_rxfh,
2068	.set_rxfh		= igc_ethtool_set_rxfh,
2069	.get_ts_info		= igc_ethtool_get_ts_info,
2070	.get_channels		= igc_ethtool_get_channels,
2071	.set_channels		= igc_ethtool_set_channels,
2072	.get_priv_flags		= igc_ethtool_get_priv_flags,
2073	.set_priv_flags		= igc_ethtool_set_priv_flags,
2074	.get_eee		= igc_ethtool_get_eee,
2075	.set_eee		= igc_ethtool_set_eee,
 
 
2076	.get_link_ksettings	= igc_ethtool_get_link_ksettings,
2077	.set_link_ksettings	= igc_ethtool_set_link_ksettings,
2078	.self_test		= igc_ethtool_diag_test,
2079};
2080
2081void igc_ethtool_set_ops(struct net_device *netdev)
2082{
2083	netdev->ethtool_ops = &igc_ethtool_ops;
2084}