1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2006 Intel Corporation. */
3 
4 /* ethtool support for e1000 */
5 
6 #include "e1000.h"
7 #include <linux/jiffies.h>
8 #include <linux/uaccess.h>
9 
10 enum {NETDEV_STATS, E1000_STATS};
11 
12 struct e1000_stats {
13 	char stat_string[ETH_GSTRING_LEN];
14 	int type;
15 	int sizeof_stat;
16 	int stat_offset;
17 };
18 
19 #define E1000_STAT(m)		E1000_STATS, \
20 				sizeof(((struct e1000_adapter *)0)->m), \
21 				offsetof(struct e1000_adapter, m)
22 #define E1000_NETDEV_STAT(m)	NETDEV_STATS, \
23 				sizeof(((struct net_device *)0)->m), \
24 				offsetof(struct net_device, m)
25 
26 static const struct e1000_stats e1000_gstrings_stats[] = {
27 	{ "rx_packets", E1000_STAT(stats.gprc) },
28 	{ "tx_packets", E1000_STAT(stats.gptc) },
29 	{ "rx_bytes", E1000_STAT(stats.gorcl) },
30 	{ "tx_bytes", E1000_STAT(stats.gotcl) },
31 	{ "rx_broadcast", E1000_STAT(stats.bprc) },
32 	{ "tx_broadcast", E1000_STAT(stats.bptc) },
33 	{ "rx_multicast", E1000_STAT(stats.mprc) },
34 	{ "tx_multicast", E1000_STAT(stats.mptc) },
35 	{ "rx_errors", E1000_STAT(stats.rxerrc) },
36 	{ "tx_errors", E1000_STAT(stats.txerrc) },
37 	{ "tx_dropped", E1000_NETDEV_STAT(stats.tx_dropped) },
38 	{ "multicast", E1000_STAT(stats.mprc) },
39 	{ "collisions", E1000_STAT(stats.colc) },
40 	{ "rx_length_errors", E1000_STAT(stats.rlerrc) },
41 	{ "rx_over_errors", E1000_NETDEV_STAT(stats.rx_over_errors) },
42 	{ "rx_crc_errors", E1000_STAT(stats.crcerrs) },
43 	{ "rx_frame_errors", E1000_NETDEV_STAT(stats.rx_frame_errors) },
44 	{ "rx_no_buffer_count", E1000_STAT(stats.rnbc) },
45 	{ "rx_missed_errors", E1000_STAT(stats.mpc) },
46 	{ "tx_aborted_errors", E1000_STAT(stats.ecol) },
47 	{ "tx_carrier_errors", E1000_STAT(stats.tncrs) },
48 	{ "tx_fifo_errors", E1000_NETDEV_STAT(stats.tx_fifo_errors) },
49 	{ "tx_heartbeat_errors", E1000_NETDEV_STAT(stats.tx_heartbeat_errors) },
50 	{ "tx_window_errors", E1000_STAT(stats.latecol) },
51 	{ "tx_abort_late_coll", E1000_STAT(stats.latecol) },
52 	{ "tx_deferred_ok", E1000_STAT(stats.dc) },
53 	{ "tx_single_coll_ok", E1000_STAT(stats.scc) },
54 	{ "tx_multi_coll_ok", E1000_STAT(stats.mcc) },
55 	{ "tx_timeout_count", E1000_STAT(tx_timeout_count) },
56 	{ "tx_restart_queue", E1000_STAT(restart_queue) },
57 	{ "rx_long_length_errors", E1000_STAT(stats.roc) },
58 	{ "rx_short_length_errors", E1000_STAT(stats.ruc) },
59 	{ "rx_align_errors", E1000_STAT(stats.algnerrc) },
60 	{ "tx_tcp_seg_good", E1000_STAT(stats.tsctc) },
61 	{ "tx_tcp_seg_failed", E1000_STAT(stats.tsctfc) },
62 	{ "rx_flow_control_xon", E1000_STAT(stats.xonrxc) },
63 	{ "rx_flow_control_xoff", E1000_STAT(stats.xoffrxc) },
64 	{ "tx_flow_control_xon", E1000_STAT(stats.xontxc) },
65 	{ "tx_flow_control_xoff", E1000_STAT(stats.xofftxc) },
66 	{ "rx_long_byte_count", E1000_STAT(stats.gorcl) },
67 	{ "rx_csum_offload_good", E1000_STAT(hw_csum_good) },
68 	{ "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },
69 	{ "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },
70 	{ "tx_smbus", E1000_STAT(stats.mgptc) },
71 	{ "rx_smbus", E1000_STAT(stats.mgprc) },
72 	{ "dropped_smbus", E1000_STAT(stats.mgpdc) },
73 };
74 
75 #define E1000_QUEUE_STATS_LEN 0
76 #define E1000_GLOBAL_STATS_LEN ARRAY_SIZE(e1000_gstrings_stats)
77 #define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN + E1000_QUEUE_STATS_LEN)
78 static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {
79 	"Register test  (offline)", "Eeprom test    (offline)",
80 	"Interrupt test (offline)", "Loopback test  (offline)",
81 	"Link test   (on/offline)"
82 };
83 
84 #define E1000_TEST_LEN	ARRAY_SIZE(e1000_gstrings_test)
85 
86 static int e1000_get_link_ksettings(struct net_device *netdev,
87 				    struct ethtool_link_ksettings *cmd)
88 {
89 	struct e1000_adapter *adapter = netdev_priv(netdev);
90 	struct e1000_hw *hw = &adapter->hw;
91 	u32 supported, advertising;
92 
93 	if (hw->media_type == e1000_media_type_copper) {
94 		supported = (SUPPORTED_10baseT_Half |
95 			     SUPPORTED_10baseT_Full |
96 			     SUPPORTED_100baseT_Half |
97 			     SUPPORTED_100baseT_Full |
98 			     SUPPORTED_1000baseT_Full|
99 			     SUPPORTED_Autoneg |
100 			     SUPPORTED_TP);
101 		advertising = ADVERTISED_TP;
102 
103 		if (hw->autoneg == 1) {
104 			advertising |= ADVERTISED_Autoneg;
105 			/* the e1000 autoneg seems to match ethtool nicely */
106 			advertising |= hw->autoneg_advertised;
107 		}
108 
109 		cmd->base.port = PORT_TP;
110 		cmd->base.phy_address = hw->phy_addr;
111 	} else {
112 		supported   = (SUPPORTED_1000baseT_Full |
113 			       SUPPORTED_FIBRE |
114 			       SUPPORTED_Autoneg);
115 
116 		advertising = (ADVERTISED_1000baseT_Full |
117 			       ADVERTISED_FIBRE |
118 			       ADVERTISED_Autoneg);
119 
120 		cmd->base.port = PORT_FIBRE;
121 	}
122 
123 	if (er32(STATUS) & E1000_STATUS_LU) {
124 		e1000_get_speed_and_duplex(hw, &adapter->link_speed,
125 					   &adapter->link_duplex);
126 		cmd->base.speed = adapter->link_speed;
127 
128 		/* unfortunately FULL_DUPLEX != DUPLEX_FULL
129 		 * and HALF_DUPLEX != DUPLEX_HALF
130 		 */
131 		if (adapter->link_duplex == FULL_DUPLEX)
132 			cmd->base.duplex = DUPLEX_FULL;
133 		else
134 			cmd->base.duplex = DUPLEX_HALF;
135 	} else {
136 		cmd->base.speed = SPEED_UNKNOWN;
137 		cmd->base.duplex = DUPLEX_UNKNOWN;
138 	}
139 
140 	cmd->base.autoneg = ((hw->media_type == e1000_media_type_fiber) ||
141 			 hw->autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
142 
143 	/* MDI-X => 1; MDI => 0 */
144 	if ((hw->media_type == e1000_media_type_copper) &&
145 	    netif_carrier_ok(netdev))
146 		cmd->base.eth_tp_mdix = (!!adapter->phy_info.mdix_mode ?
147 				     ETH_TP_MDI_X : ETH_TP_MDI);
148 	else
149 		cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
150 
151 	if (hw->mdix == AUTO_ALL_MODES)
152 		cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
153 	else
154 		cmd->base.eth_tp_mdix_ctrl = hw->mdix;
155 
156 	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
157 						supported);
158 	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
159 						advertising);
160 
161 	return 0;
162 }
163 
164 static int e1000_set_link_ksettings(struct net_device *netdev,
165 				    const struct ethtool_link_ksettings *cmd)
166 {
167 	struct e1000_adapter *adapter = netdev_priv(netdev);
168 	struct e1000_hw *hw = &adapter->hw;
169 	u32 advertising;
170 
171 	ethtool_convert_link_mode_to_legacy_u32(&advertising,
172 						cmd->link_modes.advertising);
173 
174 	/* MDI setting is only allowed when autoneg enabled because
175 	 * some hardware doesn't allow MDI setting when speed or
176 	 * duplex is forced.
177 	 */
178 	if (cmd->base.eth_tp_mdix_ctrl) {
179 		if (hw->media_type != e1000_media_type_copper)
180 			return -EOPNOTSUPP;
181 
182 		if ((cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
183 		    (cmd->base.autoneg != AUTONEG_ENABLE)) {
184 			e_err(drv, "forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
185 			return -EINVAL;
186 		}
187 	}
188 
189 	while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
190 		msleep(1);
191 
192 	if (cmd->base.autoneg == AUTONEG_ENABLE) {
193 		hw->autoneg = 1;
194 		if (hw->media_type == e1000_media_type_fiber)
195 			hw->autoneg_advertised = ADVERTISED_1000baseT_Full |
196 						 ADVERTISED_FIBRE |
197 						 ADVERTISED_Autoneg;
198 		else
199 			hw->autoneg_advertised = advertising |
200 						 ADVERTISED_TP |
201 						 ADVERTISED_Autoneg;
202 	} else {
203 		u32 speed = cmd->base.speed;
204 		/* calling this overrides forced MDI setting */
205 		if (e1000_set_spd_dplx(adapter, speed, cmd->base.duplex)) {
206 			clear_bit(__E1000_RESETTING, &adapter->flags);
207 			return -EINVAL;
208 		}
209 	}
210 
211 	/* MDI-X => 2; MDI => 1; Auto => 3 */
212 	if (cmd->base.eth_tp_mdix_ctrl) {
213 		if (cmd->base.eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
214 			hw->mdix = AUTO_ALL_MODES;
215 		else
216 			hw->mdix = cmd->base.eth_tp_mdix_ctrl;
217 	}
218 
219 	/* reset the link */
220 
221 	if (netif_running(adapter->netdev)) {
222 		e1000_down(adapter);
223 		e1000_up(adapter);
224 	} else {
225 		e1000_reset(adapter);
226 	}
227 	clear_bit(__E1000_RESETTING, &adapter->flags);
228 	return 0;
229 }
230 
231 static u32 e1000_get_link(struct net_device *netdev)
232 {
233 	struct e1000_adapter *adapter = netdev_priv(netdev);
234 
235 	/* If the link is not reported up to netdev, interrupts are disabled,
236 	 * and so the physical link state may have changed since we last
237 	 * looked. Set get_link_status to make sure that the true link
238 	 * state is interrogated, rather than pulling a cached and possibly
239 	 * stale link state from the driver.
240 	 */
241 	if (!netif_carrier_ok(netdev))
242 		adapter->hw.get_link_status = 1;
243 
244 	return e1000_has_link(adapter);
245 }
246 
247 static void e1000_get_pauseparam(struct net_device *netdev,
248 				 struct ethtool_pauseparam *pause)
249 {
250 	struct e1000_adapter *adapter = netdev_priv(netdev);
251 	struct e1000_hw *hw = &adapter->hw;
252 
253 	pause->autoneg =
254 		(adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
255 
256 	if (hw->fc == E1000_FC_RX_PAUSE) {
257 		pause->rx_pause = 1;
258 	} else if (hw->fc == E1000_FC_TX_PAUSE) {
259 		pause->tx_pause = 1;
260 	} else if (hw->fc == E1000_FC_FULL) {
261 		pause->rx_pause = 1;
262 		pause->tx_pause = 1;
263 	}
264 }
265 
266 static int e1000_set_pauseparam(struct net_device *netdev,
267 				struct ethtool_pauseparam *pause)
268 {
269 	struct e1000_adapter *adapter = netdev_priv(netdev);
270 	struct e1000_hw *hw = &adapter->hw;
271 	int retval = 0;
272 
273 	adapter->fc_autoneg = pause->autoneg;
274 
275 	while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
276 		msleep(1);
277 
278 	if (pause->rx_pause && pause->tx_pause)
279 		hw->fc = E1000_FC_FULL;
280 	else if (pause->rx_pause && !pause->tx_pause)
281 		hw->fc = E1000_FC_RX_PAUSE;
282 	else if (!pause->rx_pause && pause->tx_pause)
283 		hw->fc = E1000_FC_TX_PAUSE;
284 	else if (!pause->rx_pause && !pause->tx_pause)
285 		hw->fc = E1000_FC_NONE;
286 
287 	hw->original_fc = hw->fc;
288 
289 	if (adapter->fc_autoneg == AUTONEG_ENABLE) {
290 		if (netif_running(adapter->netdev)) {
291 			e1000_down(adapter);
292 			e1000_up(adapter);
293 		} else {
294 			e1000_reset(adapter);
295 		}
296 	} else
297 		retval = ((hw->media_type == e1000_media_type_fiber) ?
298 			  e1000_setup_link(hw) : e1000_force_mac_fc(hw));
299 
300 	clear_bit(__E1000_RESETTING, &adapter->flags);
301 	return retval;
302 }
303 
304 static u32 e1000_get_msglevel(struct net_device *netdev)
305 {
306 	struct e1000_adapter *adapter = netdev_priv(netdev);
307 
308 	return adapter->msg_enable;
309 }
310 
311 static void e1000_set_msglevel(struct net_device *netdev, u32 data)
312 {
313 	struct e1000_adapter *adapter = netdev_priv(netdev);
314 
315 	adapter->msg_enable = data;
316 }
317 
318 static int e1000_get_regs_len(struct net_device *netdev)
319 {
320 #define E1000_REGS_LEN 32
321 	return E1000_REGS_LEN * sizeof(u32);
322 }
323 
324 static void e1000_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
325 			   void *p)
326 {
327 	struct e1000_adapter *adapter = netdev_priv(netdev);
328 	struct e1000_hw *hw = &adapter->hw;
329 	u32 *regs_buff = p;
330 	u16 phy_data;
331 
332 	memset(p, 0, E1000_REGS_LEN * sizeof(u32));
333 
334 	regs->version = (1 << 24) | (hw->revision_id << 16) | hw->device_id;
335 
336 	regs_buff[0]  = er32(CTRL);
337 	regs_buff[1]  = er32(STATUS);
338 
339 	regs_buff[2]  = er32(RCTL);
340 	regs_buff[3]  = er32(RDLEN);
341 	regs_buff[4]  = er32(RDH);
342 	regs_buff[5]  = er32(RDT);
343 	regs_buff[6]  = er32(RDTR);
344 
345 	regs_buff[7]  = er32(TCTL);
346 	regs_buff[8]  = er32(TDLEN);
347 	regs_buff[9]  = er32(TDH);
348 	regs_buff[10] = er32(TDT);
349 	regs_buff[11] = er32(TIDV);
350 
351 	regs_buff[12] = hw->phy_type;  /* PHY type (IGP=1, M88=0) */
352 	if (hw->phy_type == e1000_phy_igp) {
353 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,
354 				    IGP01E1000_PHY_AGC_A);
355 		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_A &
356 				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);
357 		regs_buff[13] = (u32)phy_data; /* cable length */
358 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,
359 				    IGP01E1000_PHY_AGC_B);
360 		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_B &
361 				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);
362 		regs_buff[14] = (u32)phy_data; /* cable length */
363 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,
364 				    IGP01E1000_PHY_AGC_C);
365 		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_C &
366 				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);
367 		regs_buff[15] = (u32)phy_data; /* cable length */
368 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,
369 				    IGP01E1000_PHY_AGC_D);
370 		e1000_read_phy_reg(hw, IGP01E1000_PHY_AGC_D &
371 				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);
372 		regs_buff[16] = (u32)phy_data; /* cable length */
373 		regs_buff[17] = 0; /* extended 10bt distance (not needed) */
374 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);
375 		e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS &
376 				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);
377 		regs_buff[18] = (u32)phy_data; /* cable polarity */
378 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT,
379 				    IGP01E1000_PHY_PCS_INIT_REG);
380 		e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG &
381 				   IGP01E1000_PHY_PAGE_SELECT, &phy_data);
382 		regs_buff[19] = (u32)phy_data; /* cable polarity */
383 		regs_buff[20] = 0; /* polarity correction enabled (always) */
384 		regs_buff[22] = 0; /* phy receive errors (unavailable) */
385 		regs_buff[23] = regs_buff[18]; /* mdix mode */
386 		e1000_write_phy_reg(hw, IGP01E1000_PHY_PAGE_SELECT, 0x0);
387 	} else {
388 		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
389 		regs_buff[13] = (u32)phy_data; /* cable length */
390 		regs_buff[14] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
391 		regs_buff[15] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
392 		regs_buff[16] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
393 		e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
394 		regs_buff[17] = (u32)phy_data; /* extended 10bt distance */
395 		regs_buff[18] = regs_buff[13]; /* cable polarity */
396 		regs_buff[19] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
397 		regs_buff[20] = regs_buff[17]; /* polarity correction */
398 		/* phy receive errors */
399 		regs_buff[22] = adapter->phy_stats.receive_errors;
400 		regs_buff[23] = regs_buff[13]; /* mdix mode */
401 	}
402 	regs_buff[21] = adapter->phy_stats.idle_errors;  /* phy idle errors */
403 	e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
404 	regs_buff[24] = (u32)phy_data;  /* phy local receiver status */
405 	regs_buff[25] = regs_buff[24];  /* phy remote receiver status */
406 	if (hw->mac_type >= e1000_82540 &&
407 	    hw->media_type == e1000_media_type_copper) {
408 		regs_buff[26] = er32(MANC);
409 	}
410 }
411 
412 static int e1000_get_eeprom_len(struct net_device *netdev)
413 {
414 	struct e1000_adapter *adapter = netdev_priv(netdev);
415 	struct e1000_hw *hw = &adapter->hw;
416 
417 	return hw->eeprom.word_size * 2;
418 }
419 
420 static int e1000_get_eeprom(struct net_device *netdev,
421 			    struct ethtool_eeprom *eeprom, u8 *bytes)
422 {
423 	struct e1000_adapter *adapter = netdev_priv(netdev);
424 	struct e1000_hw *hw = &adapter->hw;
425 	u16 *eeprom_buff;
426 	int first_word, last_word;
427 	int ret_val = 0;
428 	u16 i;
429 
430 	if (eeprom->len == 0)
431 		return -EINVAL;
432 
433 	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
434 
435 	first_word = eeprom->offset >> 1;
436 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
437 
438 	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
439 				    GFP_KERNEL);
440 	if (!eeprom_buff)
441 		return -ENOMEM;
442 
443 	if (hw->eeprom.type == e1000_eeprom_spi)
444 		ret_val = e1000_read_eeprom(hw, first_word,
445 					    last_word - first_word + 1,
446 					    eeprom_buff);
447 	else {
448 		for (i = 0; i < last_word - first_word + 1; i++) {
449 			ret_val = e1000_read_eeprom(hw, first_word + i, 1,
450 						    &eeprom_buff[i]);
451 			if (ret_val)
452 				break;
453 		}
454 	}
455 
456 	/* Device's eeprom is always little-endian, word addressable */
457 	for (i = 0; i < last_word - first_word + 1; i++)
458 		le16_to_cpus(&eeprom_buff[i]);
459 
460 	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1),
461 	       eeprom->len);
462 	kfree(eeprom_buff);
463 
464 	return ret_val;
465 }
466 
467 static int e1000_set_eeprom(struct net_device *netdev,
468 			    struct ethtool_eeprom *eeprom, u8 *bytes)
469 {
470 	struct e1000_adapter *adapter = netdev_priv(netdev);
471 	struct e1000_hw *hw = &adapter->hw;
472 	u16 *eeprom_buff;
473 	void *ptr;
474 	int max_len, first_word, last_word, ret_val = 0;
475 	u16 i;
476 
477 	if (eeprom->len == 0)
478 		return -EOPNOTSUPP;
479 
480 	if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
481 		return -EFAULT;
482 
483 	max_len = hw->eeprom.word_size * 2;
484 
485 	first_word = eeprom->offset >> 1;
486 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
487 	eeprom_buff = kmalloc(max_len, GFP_KERNEL);
488 	if (!eeprom_buff)
489 		return -ENOMEM;
490 
491 	ptr = (void *)eeprom_buff;
492 
493 	if (eeprom->offset & 1) {
494 		/* need read/modify/write of first changed EEPROM word
495 		 * only the second byte of the word is being modified
496 		 */
497 		ret_val = e1000_read_eeprom(hw, first_word, 1,
498 					    &eeprom_buff[0]);
499 		ptr++;
500 	}
501 	if (((eeprom->offset + eeprom->len) & 1) && (ret_val == 0)) {
502 		/* need read/modify/write of last changed EEPROM word
503 		 * only the first byte of the word is being modified
504 		 */
505 		ret_val = e1000_read_eeprom(hw, last_word, 1,
506 					    &eeprom_buff[last_word - first_word]);
507 	}
508 
509 	/* Device's eeprom is always little-endian, word addressable */
510 	for (i = 0; i < last_word - first_word + 1; i++)
511 		le16_to_cpus(&eeprom_buff[i]);
512 
513 	memcpy(ptr, bytes, eeprom->len);
514 
515 	for (i = 0; i < last_word - first_word + 1; i++)
516 		cpu_to_le16s(&eeprom_buff[i]);
517 
518 	ret_val = e1000_write_eeprom(hw, first_word,
519 				     last_word - first_word + 1, eeprom_buff);
520 
521 	/* Update the checksum over the first part of the EEPROM if needed */
522 	if ((ret_val == 0) && (first_word <= EEPROM_CHECKSUM_REG))
523 		e1000_update_eeprom_checksum(hw);
524 
525 	kfree(eeprom_buff);
526 	return ret_val;
527 }
528 
529 static void e1000_get_drvinfo(struct net_device *netdev,
530 			      struct ethtool_drvinfo *drvinfo)
531 {
532 	struct e1000_adapter *adapter = netdev_priv(netdev);
533 
534 	strlcpy(drvinfo->driver,  e1000_driver_name,
535 		sizeof(drvinfo->driver));
536 
537 	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
538 		sizeof(drvinfo->bus_info));
539 }
540 
541 static void e1000_get_ringparam(struct net_device *netdev,
542 				struct ethtool_ringparam *ring)
543 {
544 	struct e1000_adapter *adapter = netdev_priv(netdev);
545 	struct e1000_hw *hw = &adapter->hw;
546 	e1000_mac_type mac_type = hw->mac_type;
547 	struct e1000_tx_ring *txdr = adapter->tx_ring;
548 	struct e1000_rx_ring *rxdr = adapter->rx_ring;
549 
550 	ring->rx_max_pending = (mac_type < e1000_82544) ? E1000_MAX_RXD :
551 		E1000_MAX_82544_RXD;
552 	ring->tx_max_pending = (mac_type < e1000_82544) ? E1000_MAX_TXD :
553 		E1000_MAX_82544_TXD;
554 	ring->rx_pending = rxdr->count;
555 	ring->tx_pending = txdr->count;
556 }
557 
558 static int e1000_set_ringparam(struct net_device *netdev,
559 			       struct ethtool_ringparam *ring)
560 {
561 	struct e1000_adapter *adapter = netdev_priv(netdev);
562 	struct e1000_hw *hw = &adapter->hw;
563 	e1000_mac_type mac_type = hw->mac_type;
564 	struct e1000_tx_ring *txdr, *tx_old;
565 	struct e1000_rx_ring *rxdr, *rx_old;
566 	int i, err;
567 
568 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
569 		return -EINVAL;
570 
571 	while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
572 		msleep(1);
573 
574 	if (netif_running(adapter->netdev))
575 		e1000_down(adapter);
576 
577 	tx_old = adapter->tx_ring;
578 	rx_old = adapter->rx_ring;
579 
580 	err = -ENOMEM;
581 	txdr = kcalloc(adapter->num_tx_queues, sizeof(struct e1000_tx_ring),
582 		       GFP_KERNEL);
583 	if (!txdr)
584 		goto err_alloc_tx;
585 
586 	rxdr = kcalloc(adapter->num_rx_queues, sizeof(struct e1000_rx_ring),
587 		       GFP_KERNEL);
588 	if (!rxdr)
589 		goto err_alloc_rx;
590 
591 	adapter->tx_ring = txdr;
592 	adapter->rx_ring = rxdr;
593 
594 	rxdr->count = max(ring->rx_pending, (u32)E1000_MIN_RXD);
595 	rxdr->count = min(rxdr->count, (u32)(mac_type < e1000_82544 ?
596 			  E1000_MAX_RXD : E1000_MAX_82544_RXD));
597 	rxdr->count = ALIGN(rxdr->count, REQ_RX_DESCRIPTOR_MULTIPLE);
598 	txdr->count = max(ring->tx_pending, (u32)E1000_MIN_TXD);
599 	txdr->count = min(txdr->count, (u32)(mac_type < e1000_82544 ?
600 			  E1000_MAX_TXD : E1000_MAX_82544_TXD));
601 	txdr->count = ALIGN(txdr->count, REQ_TX_DESCRIPTOR_MULTIPLE);
602 
603 	for (i = 0; i < adapter->num_tx_queues; i++)
604 		txdr[i].count = txdr->count;
605 	for (i = 0; i < adapter->num_rx_queues; i++)
606 		rxdr[i].count = rxdr->count;
607 
608 	err = 0;
609 	if (netif_running(adapter->netdev)) {
610 		/* Try to get new resources before deleting old */
611 		err = e1000_setup_all_rx_resources(adapter);
612 		if (err)
613 			goto err_setup_rx;
614 		err = e1000_setup_all_tx_resources(adapter);
615 		if (err)
616 			goto err_setup_tx;
617 
618 		/* save the new, restore the old in order to free it,
619 		 * then restore the new back again
620 		 */
621 
622 		adapter->rx_ring = rx_old;
623 		adapter->tx_ring = tx_old;
624 		e1000_free_all_rx_resources(adapter);
625 		e1000_free_all_tx_resources(adapter);
626 		adapter->rx_ring = rxdr;
627 		adapter->tx_ring = txdr;
628 		err = e1000_up(adapter);
629 	}
630 	kfree(tx_old);
631 	kfree(rx_old);
632 
633 	clear_bit(__E1000_RESETTING, &adapter->flags);
634 	return err;
635 
636 err_setup_tx:
637 	e1000_free_all_rx_resources(adapter);
638 err_setup_rx:
639 	adapter->rx_ring = rx_old;
640 	adapter->tx_ring = tx_old;
641 	kfree(rxdr);
642 err_alloc_rx:
643 	kfree(txdr);
644 err_alloc_tx:
645 	if (netif_running(adapter->netdev))
646 		e1000_up(adapter);
647 	clear_bit(__E1000_RESETTING, &adapter->flags);
648 	return err;
649 }
650 
651 static bool reg_pattern_test(struct e1000_adapter *adapter, u64 *data, int reg,
652 			     u32 mask, u32 write)
653 {
654 	struct e1000_hw *hw = &adapter->hw;
655 	static const u32 test[] = {
656 		0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
657 	};
658 	u8 __iomem *address = hw->hw_addr + reg;
659 	u32 read;
660 	int i;
661 
662 	for (i = 0; i < ARRAY_SIZE(test); i++) {
663 		writel(write & test[i], address);
664 		read = readl(address);
665 		if (read != (write & test[i] & mask)) {
666 			e_err(drv, "pattern test reg %04X failed: "
667 			      "got 0x%08X expected 0x%08X\n",
668 			      reg, read, (write & test[i] & mask));
669 			*data = reg;
670 			return true;
671 		}
672 	}
673 	return false;
674 }
675 
676 static bool reg_set_and_check(struct e1000_adapter *adapter, u64 *data, int reg,
677 			      u32 mask, u32 write)
678 {
679 	struct e1000_hw *hw = &adapter->hw;
680 	u8 __iomem *address = hw->hw_addr + reg;
681 	u32 read;
682 
683 	writel(write & mask, address);
684 	read = readl(address);
685 	if ((read & mask) != (write & mask)) {
686 		e_err(drv, "set/check reg %04X test failed: "
687 		      "got 0x%08X expected 0x%08X\n",
688 		      reg, (read & mask), (write & mask));
689 		*data = reg;
690 		return true;
691 	}
692 	return false;
693 }
694 
695 #define REG_PATTERN_TEST(reg, mask, write)			     \
696 	do {							     \
697 		if (reg_pattern_test(adapter, data,		     \
698 			     (hw->mac_type >= e1000_82543)   \
699 			     ? E1000_##reg : E1000_82542_##reg,	     \
700 			     mask, write))			     \
701 			return 1;				     \
702 	} while (0)
703 
704 #define REG_SET_AND_CHECK(reg, mask, write)			     \
705 	do {							     \
706 		if (reg_set_and_check(adapter, data,		     \
707 			      (hw->mac_type >= e1000_82543)  \
708 			      ? E1000_##reg : E1000_82542_##reg,     \
709 			      mask, write))			     \
710 			return 1;				     \
711 	} while (0)
712 
713 static int e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
714 {
715 	u32 value, before, after;
716 	u32 i, toggle;
717 	struct e1000_hw *hw = &adapter->hw;
718 
719 	/* The status register is Read Only, so a write should fail.
720 	 * Some bits that get toggled are ignored.
721 	 */
722 
723 	/* there are several bits on newer hardware that are r/w */
724 	toggle = 0xFFFFF833;
725 
726 	before = er32(STATUS);
727 	value = (er32(STATUS) & toggle);
728 	ew32(STATUS, toggle);
729 	after = er32(STATUS) & toggle;
730 	if (value != after) {
731 		e_err(drv, "failed STATUS register test got: "
732 		      "0x%08X expected: 0x%08X\n", after, value);
733 		*data = 1;
734 		return 1;
735 	}
736 	/* restore previous status */
737 	ew32(STATUS, before);
738 
739 	REG_PATTERN_TEST(FCAL, 0xFFFFFFFF, 0xFFFFFFFF);
740 	REG_PATTERN_TEST(FCAH, 0x0000FFFF, 0xFFFFFFFF);
741 	REG_PATTERN_TEST(FCT, 0x0000FFFF, 0xFFFFFFFF);
742 	REG_PATTERN_TEST(VET, 0x0000FFFF, 0xFFFFFFFF);
743 
744 	REG_PATTERN_TEST(RDTR, 0x0000FFFF, 0xFFFFFFFF);
745 	REG_PATTERN_TEST(RDBAH, 0xFFFFFFFF, 0xFFFFFFFF);
746 	REG_PATTERN_TEST(RDLEN, 0x000FFF80, 0x000FFFFF);
747 	REG_PATTERN_TEST(RDH, 0x0000FFFF, 0x0000FFFF);
748 	REG_PATTERN_TEST(RDT, 0x0000FFFF, 0x0000FFFF);
749 	REG_PATTERN_TEST(FCRTH, 0x0000FFF8, 0x0000FFF8);
750 	REG_PATTERN_TEST(FCTTV, 0x0000FFFF, 0x0000FFFF);
751 	REG_PATTERN_TEST(TIPG, 0x3FFFFFFF, 0x3FFFFFFF);
752 	REG_PATTERN_TEST(TDBAH, 0xFFFFFFFF, 0xFFFFFFFF);
753 	REG_PATTERN_TEST(TDLEN, 0x000FFF80, 0x000FFFFF);
754 
755 	REG_SET_AND_CHECK(RCTL, 0xFFFFFFFF, 0x00000000);
756 
757 	before = 0x06DFB3FE;
758 	REG_SET_AND_CHECK(RCTL, before, 0x003FFFFB);
759 	REG_SET_AND_CHECK(TCTL, 0xFFFFFFFF, 0x00000000);
760 
761 	if (hw->mac_type >= e1000_82543) {
762 		REG_SET_AND_CHECK(RCTL, before, 0xFFFFFFFF);
763 		REG_PATTERN_TEST(RDBAL, 0xFFFFFFF0, 0xFFFFFFFF);
764 		REG_PATTERN_TEST(TXCW, 0xC000FFFF, 0x0000FFFF);
765 		REG_PATTERN_TEST(TDBAL, 0xFFFFFFF0, 0xFFFFFFFF);
766 		REG_PATTERN_TEST(TIDV, 0x0000FFFF, 0x0000FFFF);
767 		value = E1000_RAR_ENTRIES;
768 		for (i = 0; i < value; i++) {
769 			REG_PATTERN_TEST(RA + (((i << 1) + 1) << 2),
770 					 0x8003FFFF, 0xFFFFFFFF);
771 		}
772 	} else {
773 		REG_SET_AND_CHECK(RCTL, 0xFFFFFFFF, 0x01FFFFFF);
774 		REG_PATTERN_TEST(RDBAL, 0xFFFFF000, 0xFFFFFFFF);
775 		REG_PATTERN_TEST(TXCW, 0x0000FFFF, 0x0000FFFF);
776 		REG_PATTERN_TEST(TDBAL, 0xFFFFF000, 0xFFFFFFFF);
777 	}
778 
779 	value = E1000_MC_TBL_SIZE;
780 	for (i = 0; i < value; i++)
781 		REG_PATTERN_TEST(MTA + (i << 2), 0xFFFFFFFF, 0xFFFFFFFF);
782 
783 	*data = 0;
784 	return 0;
785 }
786 
787 static int e1000_eeprom_test(struct e1000_adapter *adapter, u64 *data)
788 {
789 	struct e1000_hw *hw = &adapter->hw;
790 	u16 temp;
791 	u16 checksum = 0;
792 	u16 i;
793 
794 	*data = 0;
795 	/* Read and add up the contents of the EEPROM */
796 	for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) {
797 		if ((e1000_read_eeprom(hw, i, 1, &temp)) < 0) {
798 			*data = 1;
799 			break;
800 		}
801 		checksum += temp;
802 	}
803 
804 	/* If Checksum is not Correct return error else test passed */
805 	if ((checksum != (u16)EEPROM_SUM) && !(*data))
806 		*data = 2;
807 
808 	return *data;
809 }
810 
811 static irqreturn_t e1000_test_intr(int irq, void *data)
812 {
813 	struct net_device *netdev = (struct net_device *)data;
814 	struct e1000_adapter *adapter = netdev_priv(netdev);
815 	struct e1000_hw *hw = &adapter->hw;
816 
817 	adapter->test_icr |= er32(ICR);
818 
819 	return IRQ_HANDLED;
820 }
821 
822 static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
823 {
824 	struct net_device *netdev = adapter->netdev;
825 	u32 mask, i = 0;
826 	bool shared_int = true;
827 	u32 irq = adapter->pdev->irq;
828 	struct e1000_hw *hw = &adapter->hw;
829 
830 	*data = 0;
831 
832 	/* NOTE: we don't test MSI interrupts here, yet
833 	 * Hook up test interrupt handler just for this test
834 	 */
835 	if (!request_irq(irq, e1000_test_intr, IRQF_PROBE_SHARED, netdev->name,
836 			 netdev))
837 		shared_int = false;
838 	else if (request_irq(irq, e1000_test_intr, IRQF_SHARED,
839 			     netdev->name, netdev)) {
840 		*data = 1;
841 		return -1;
842 	}
843 	e_info(hw, "testing %s interrupt\n", (shared_int ?
844 	       "shared" : "unshared"));
845 
846 	/* Disable all the interrupts */
847 	ew32(IMC, 0xFFFFFFFF);
848 	E1000_WRITE_FLUSH();
849 	msleep(10);
850 
851 	/* Test each interrupt */
852 	for (; i < 10; i++) {
853 		/* Interrupt to test */
854 		mask = 1 << i;
855 
856 		if (!shared_int) {
857 			/* Disable the interrupt to be reported in
858 			 * the cause register and then force the same
859 			 * interrupt and see if one gets posted.  If
860 			 * an interrupt was posted to the bus, the
861 			 * test failed.
862 			 */
863 			adapter->test_icr = 0;
864 			ew32(IMC, mask);
865 			ew32(ICS, mask);
866 			E1000_WRITE_FLUSH();
867 			msleep(10);
868 
869 			if (adapter->test_icr & mask) {
870 				*data = 3;
871 				break;
872 			}
873 		}
874 
875 		/* Enable the interrupt to be reported in
876 		 * the cause register and then force the same
877 		 * interrupt and see if one gets posted.  If
878 		 * an interrupt was not posted to the bus, the
879 		 * test failed.
880 		 */
881 		adapter->test_icr = 0;
882 		ew32(IMS, mask);
883 		ew32(ICS, mask);
884 		E1000_WRITE_FLUSH();
885 		msleep(10);
886 
887 		if (!(adapter->test_icr & mask)) {
888 			*data = 4;
889 			break;
890 		}
891 
892 		if (!shared_int) {
893 			/* Disable the other interrupts to be reported in
894 			 * the cause register and then force the other
895 			 * interrupts and see if any get posted.  If
896 			 * an interrupt was posted to the bus, the
897 			 * test failed.
898 			 */
899 			adapter->test_icr = 0;
900 			ew32(IMC, ~mask & 0x00007FFF);
901 			ew32(ICS, ~mask & 0x00007FFF);
902 			E1000_WRITE_FLUSH();
903 			msleep(10);
904 
905 			if (adapter->test_icr) {
906 				*data = 5;
907 				break;
908 			}
909 		}
910 	}
911 
912 	/* Disable all the interrupts */
913 	ew32(IMC, 0xFFFFFFFF);
914 	E1000_WRITE_FLUSH();
915 	msleep(10);
916 
917 	/* Unhook test interrupt handler */
918 	free_irq(irq, netdev);
919 
920 	return *data;
921 }
922 
923 static void e1000_free_desc_rings(struct e1000_adapter *adapter)
924 {
925 	struct e1000_tx_ring *txdr = &adapter->test_tx_ring;
926 	struct e1000_rx_ring *rxdr = &adapter->test_rx_ring;
927 	struct pci_dev *pdev = adapter->pdev;
928 	int i;
929 
930 	if (txdr->desc && txdr->buffer_info) {
931 		for (i = 0; i < txdr->count; i++) {
932 			if (txdr->buffer_info[i].dma)
933 				dma_unmap_single(&pdev->dev,
934 						 txdr->buffer_info[i].dma,
935 						 txdr->buffer_info[i].length,
936 						 DMA_TO_DEVICE);
937 			dev_kfree_skb(txdr->buffer_info[i].skb);
938 		}
939 	}
940 
941 	if (rxdr->desc && rxdr->buffer_info) {
942 		for (i = 0; i < rxdr->count; i++) {
943 			if (rxdr->buffer_info[i].dma)
944 				dma_unmap_single(&pdev->dev,
945 						 rxdr->buffer_info[i].dma,
946 						 E1000_RXBUFFER_2048,
947 						 DMA_FROM_DEVICE);
948 			kfree(rxdr->buffer_info[i].rxbuf.data);
949 		}
950 	}
951 
952 	if (txdr->desc) {
953 		dma_free_coherent(&pdev->dev, txdr->size, txdr->desc,
954 				  txdr->dma);
955 		txdr->desc = NULL;
956 	}
957 	if (rxdr->desc) {
958 		dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc,
959 				  rxdr->dma);
960 		rxdr->desc = NULL;
961 	}
962 
963 	kfree(txdr->buffer_info);
964 	txdr->buffer_info = NULL;
965 	kfree(rxdr->buffer_info);
966 	rxdr->buffer_info = NULL;
967 }
968 
969 static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
970 {
971 	struct e1000_hw *hw = &adapter->hw;
972 	struct e1000_tx_ring *txdr = &adapter->test_tx_ring;
973 	struct e1000_rx_ring *rxdr = &adapter->test_rx_ring;
974 	struct pci_dev *pdev = adapter->pdev;
975 	u32 rctl;
976 	int i, ret_val;
977 
978 	/* Setup Tx descriptor ring and Tx buffers */
979 
980 	if (!txdr->count)
981 		txdr->count = E1000_DEFAULT_TXD;
982 
983 	txdr->buffer_info = kcalloc(txdr->count, sizeof(struct e1000_tx_buffer),
984 				    GFP_KERNEL);
985 	if (!txdr->buffer_info) {
986 		ret_val = 1;
987 		goto err_nomem;
988 	}
989 
990 	txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
991 	txdr->size = ALIGN(txdr->size, 4096);
992 	txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma,
993 					GFP_KERNEL);
994 	if (!txdr->desc) {
995 		ret_val = 2;
996 		goto err_nomem;
997 	}
998 	txdr->next_to_use = txdr->next_to_clean = 0;
999 
1000 	ew32(TDBAL, ((u64)txdr->dma & 0x00000000FFFFFFFF));
1001 	ew32(TDBAH, ((u64)txdr->dma >> 32));
1002 	ew32(TDLEN, txdr->count * sizeof(struct e1000_tx_desc));
1003 	ew32(TDH, 0);
1004 	ew32(TDT, 0);
1005 	ew32(TCTL, E1000_TCTL_PSP | E1000_TCTL_EN |
1006 	     E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
1007 	     E1000_FDX_COLLISION_DISTANCE << E1000_COLD_SHIFT);
1008 
1009 	for (i = 0; i < txdr->count; i++) {
1010 		struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*txdr, i);
1011 		struct sk_buff *skb;
1012 		unsigned int size = 1024;
1013 
1014 		skb = alloc_skb(size, GFP_KERNEL);
1015 		if (!skb) {
1016 			ret_val = 3;
1017 			goto err_nomem;
1018 		}
1019 		skb_put(skb, size);
1020 		txdr->buffer_info[i].skb = skb;
1021 		txdr->buffer_info[i].length = skb->len;
1022 		txdr->buffer_info[i].dma =
1023 			dma_map_single(&pdev->dev, skb->data, skb->len,
1024 				       DMA_TO_DEVICE);
1025 		if (dma_mapping_error(&pdev->dev, txdr->buffer_info[i].dma)) {
1026 			ret_val = 4;
1027 			goto err_nomem;
1028 		}
1029 		tx_desc->buffer_addr = cpu_to_le64(txdr->buffer_info[i].dma);
1030 		tx_desc->lower.data = cpu_to_le32(skb->len);
1031 		tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
1032 						   E1000_TXD_CMD_IFCS |
1033 						   E1000_TXD_CMD_RPS);
1034 		tx_desc->upper.data = 0;
1035 	}
1036 
1037 	/* Setup Rx descriptor ring and Rx buffers */
1038 
1039 	if (!rxdr->count)
1040 		rxdr->count = E1000_DEFAULT_RXD;
1041 
1042 	rxdr->buffer_info = kcalloc(rxdr->count, sizeof(struct e1000_rx_buffer),
1043 				    GFP_KERNEL);
1044 	if (!rxdr->buffer_info) {
1045 		ret_val = 5;
1046 		goto err_nomem;
1047 	}
1048 
1049 	rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
1050 	rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
1051 					GFP_KERNEL);
1052 	if (!rxdr->desc) {
1053 		ret_val = 6;
1054 		goto err_nomem;
1055 	}
1056 	rxdr->next_to_use = rxdr->next_to_clean = 0;
1057 
1058 	rctl = er32(RCTL);
1059 	ew32(RCTL, rctl & ~E1000_RCTL_EN);
1060 	ew32(RDBAL, ((u64)rxdr->dma & 0xFFFFFFFF));
1061 	ew32(RDBAH, ((u64)rxdr->dma >> 32));
1062 	ew32(RDLEN, rxdr->size);
1063 	ew32(RDH, 0);
1064 	ew32(RDT, 0);
1065 	rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
1066 		E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1067 		(hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
1068 	ew32(RCTL, rctl);
1069 
1070 	for (i = 0; i < rxdr->count; i++) {
1071 		struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rxdr, i);
1072 		u8 *buf;
1073 
1074 		buf = kzalloc(E1000_RXBUFFER_2048 + NET_SKB_PAD + NET_IP_ALIGN,
1075 			      GFP_KERNEL);
1076 		if (!buf) {
1077 			ret_val = 7;
1078 			goto err_nomem;
1079 		}
1080 		rxdr->buffer_info[i].rxbuf.data = buf;
1081 
1082 		rxdr->buffer_info[i].dma =
1083 			dma_map_single(&pdev->dev,
1084 				       buf + NET_SKB_PAD + NET_IP_ALIGN,
1085 				       E1000_RXBUFFER_2048, DMA_FROM_DEVICE);
1086 		if (dma_mapping_error(&pdev->dev, rxdr->buffer_info[i].dma)) {
1087 			ret_val = 8;
1088 			goto err_nomem;
1089 		}
1090 		rx_desc->buffer_addr = cpu_to_le64(rxdr->buffer_info[i].dma);
1091 	}
1092 
1093 	return 0;
1094 
1095 err_nomem:
1096 	e1000_free_desc_rings(adapter);
1097 	return ret_val;
1098 }
1099 
1100 static void e1000_phy_disable_receiver(struct e1000_adapter *adapter)
1101 {
1102 	struct e1000_hw *hw = &adapter->hw;
1103 
1104 	/* Write out to PHY registers 29 and 30 to disable the Receiver. */
1105 	e1000_write_phy_reg(hw, 29, 0x001F);
1106 	e1000_write_phy_reg(hw, 30, 0x8FFC);
1107 	e1000_write_phy_reg(hw, 29, 0x001A);
1108 	e1000_write_phy_reg(hw, 30, 0x8FF0);
1109 }
1110 
1111 static void e1000_phy_reset_clk_and_crs(struct e1000_adapter *adapter)
1112 {
1113 	struct e1000_hw *hw = &adapter->hw;
1114 	u16 phy_reg;
1115 
1116 	/* Because we reset the PHY above, we need to re-force TX_CLK in the
1117 	 * Extended PHY Specific Control Register to 25MHz clock.  This
1118 	 * value defaults back to a 2.5MHz clock when the PHY is reset.
1119 	 */
1120 	e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_reg);
1121 	phy_reg |= M88E1000_EPSCR_TX_CLK_25;
1122 	e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_reg);
1123 
1124 	/* In addition, because of the s/w reset above, we need to enable
1125 	 * CRS on TX.  This must be set for both full and half duplex
1126 	 * operation.
1127 	 */
1128 	e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_reg);
1129 	phy_reg |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1130 	e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_reg);
1131 }
1132 
1133 static int e1000_nonintegrated_phy_loopback(struct e1000_adapter *adapter)
1134 {
1135 	struct e1000_hw *hw = &adapter->hw;
1136 	u32 ctrl_reg;
1137 	u16 phy_reg;
1138 
1139 	/* Setup the Device Control Register for PHY loopback test. */
1140 
1141 	ctrl_reg = er32(CTRL);
1142 	ctrl_reg |= (E1000_CTRL_ILOS |		/* Invert Loss-Of-Signal */
1143 		     E1000_CTRL_FRCSPD |	/* Set the Force Speed Bit */
1144 		     E1000_CTRL_FRCDPX |	/* Set the Force Duplex Bit */
1145 		     E1000_CTRL_SPD_1000 |	/* Force Speed to 1000 */
1146 		     E1000_CTRL_FD);		/* Force Duplex to FULL */
1147 
1148 	ew32(CTRL, ctrl_reg);
1149 
1150 	/* Read the PHY Specific Control Register (0x10) */
1151 	e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_reg);
1152 
1153 	/* Clear Auto-Crossover bits in PHY Specific Control Register
1154 	 * (bits 6:5).
1155 	 */
1156 	phy_reg &= ~M88E1000_PSCR_AUTO_X_MODE;
1157 	e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_reg);
1158 
1159 	/* Perform software reset on the PHY */
1160 	e1000_phy_reset(hw);
1161 
1162 	/* Have to setup TX_CLK and TX_CRS after software reset */
1163 	e1000_phy_reset_clk_and_crs(adapter);
1164 
1165 	e1000_write_phy_reg(hw, PHY_CTRL, 0x8100);
1166 
1167 	/* Wait for reset to complete. */
1168 	udelay(500);
1169 
1170 	/* Have to setup TX_CLK and TX_CRS after software reset */
1171 	e1000_phy_reset_clk_and_crs(adapter);
1172 
1173 	/* Write out to PHY registers 29 and 30 to disable the Receiver. */
1174 	e1000_phy_disable_receiver(adapter);
1175 
1176 	/* Set the loopback bit in the PHY control register. */
1177 	e1000_read_phy_reg(hw, PHY_CTRL, &phy_reg);
1178 	phy_reg |= MII_CR_LOOPBACK;
1179 	e1000_write_phy_reg(hw, PHY_CTRL, phy_reg);
1180 
1181 	/* Setup TX_CLK and TX_CRS one more time. */
1182 	e1000_phy_reset_clk_and_crs(adapter);
1183 
1184 	/* Check Phy Configuration */
1185 	e1000_read_phy_reg(hw, PHY_CTRL, &phy_reg);
1186 	if (phy_reg != 0x4100)
1187 		return 9;
1188 
1189 	e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_reg);
1190 	if (phy_reg != 0x0070)
1191 		return 10;
1192 
1193 	e1000_read_phy_reg(hw, 29, &phy_reg);
1194 	if (phy_reg != 0x001A)
1195 		return 11;
1196 
1197 	return 0;
1198 }
1199 
1200 static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
1201 {
1202 	struct e1000_hw *hw = &adapter->hw;
1203 	u32 ctrl_reg = 0;
1204 	u32 stat_reg = 0;
1205 
1206 	hw->autoneg = false;
1207 
1208 	if (hw->phy_type == e1000_phy_m88) {
1209 		/* Auto-MDI/MDIX Off */
1210 		e1000_write_phy_reg(hw,
1211 				    M88E1000_PHY_SPEC_CTRL, 0x0808);
1212 		/* reset to update Auto-MDI/MDIX */
1213 		e1000_write_phy_reg(hw, PHY_CTRL, 0x9140);
1214 		/* autoneg off */
1215 		e1000_write_phy_reg(hw, PHY_CTRL, 0x8140);
1216 	}
1217 
1218 	ctrl_reg = er32(CTRL);
1219 
1220 	/* force 1000, set loopback */
1221 	e1000_write_phy_reg(hw, PHY_CTRL, 0x4140);
1222 
1223 	/* Now set up the MAC to the same speed/duplex as the PHY. */
1224 	ctrl_reg = er32(CTRL);
1225 	ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1226 	ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1227 			E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1228 			E1000_CTRL_SPD_1000 |/* Force Speed to 1000 */
1229 			E1000_CTRL_FD); /* Force Duplex to FULL */
1230 
1231 	if (hw->media_type == e1000_media_type_copper &&
1232 	    hw->phy_type == e1000_phy_m88)
1233 		ctrl_reg |= E1000_CTRL_ILOS; /* Invert Loss of Signal */
1234 	else {
1235 		/* Set the ILOS bit on the fiber Nic is half
1236 		 * duplex link is detected.
1237 		 */
1238 		stat_reg = er32(STATUS);
1239 		if ((stat_reg & E1000_STATUS_FD) == 0)
1240 			ctrl_reg |= (E1000_CTRL_ILOS | E1000_CTRL_SLU);
1241 	}
1242 
1243 	ew32(CTRL, ctrl_reg);
1244 
1245 	/* Disable the receiver on the PHY so when a cable is plugged in, the
1246 	 * PHY does not begin to autoneg when a cable is reconnected to the NIC.
1247 	 */
1248 	if (hw->phy_type == e1000_phy_m88)
1249 		e1000_phy_disable_receiver(adapter);
1250 
1251 	udelay(500);
1252 
1253 	return 0;
1254 }
1255 
1256 static int e1000_set_phy_loopback(struct e1000_adapter *adapter)
1257 {
1258 	struct e1000_hw *hw = &adapter->hw;
1259 	u16 phy_reg = 0;
1260 	u16 count = 0;
1261 
1262 	switch (hw->mac_type) {
1263 	case e1000_82543:
1264 		if (hw->media_type == e1000_media_type_copper) {
1265 			/* Attempt to setup Loopback mode on Non-integrated PHY.
1266 			 * Some PHY registers get corrupted at random, so
1267 			 * attempt this 10 times.
1268 			 */
1269 			while (e1000_nonintegrated_phy_loopback(adapter) &&
1270 			       count++ < 10);
1271 			if (count < 11)
1272 				return 0;
1273 		}
1274 		break;
1275 
1276 	case e1000_82544:
1277 	case e1000_82540:
1278 	case e1000_82545:
1279 	case e1000_82545_rev_3:
1280 	case e1000_82546:
1281 	case e1000_82546_rev_3:
1282 	case e1000_82541:
1283 	case e1000_82541_rev_2:
1284 	case e1000_82547:
1285 	case e1000_82547_rev_2:
1286 		return e1000_integrated_phy_loopback(adapter);
1287 	default:
1288 		/* Default PHY loopback work is to read the MII
1289 		 * control register and assert bit 14 (loopback mode).
1290 		 */
1291 		e1000_read_phy_reg(hw, PHY_CTRL, &phy_reg);
1292 		phy_reg |= MII_CR_LOOPBACK;
1293 		e1000_write_phy_reg(hw, PHY_CTRL, phy_reg);
1294 		return 0;
1295 	}
1296 
1297 	return 8;
1298 }
1299 
1300 static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
1301 {
1302 	struct e1000_hw *hw = &adapter->hw;
1303 	u32 rctl;
1304 
1305 	if (hw->media_type == e1000_media_type_fiber ||
1306 	    hw->media_type == e1000_media_type_internal_serdes) {
1307 		switch (hw->mac_type) {
1308 		case e1000_82545:
1309 		case e1000_82546:
1310 		case e1000_82545_rev_3:
1311 		case e1000_82546_rev_3:
1312 			return e1000_set_phy_loopback(adapter);
1313 		default:
1314 			rctl = er32(RCTL);
1315 			rctl |= E1000_RCTL_LBM_TCVR;
1316 			ew32(RCTL, rctl);
1317 			return 0;
1318 		}
1319 	} else if (hw->media_type == e1000_media_type_copper) {
1320 		return e1000_set_phy_loopback(adapter);
1321 	}
1322 
1323 	return 7;
1324 }
1325 
1326 static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
1327 {
1328 	struct e1000_hw *hw = &adapter->hw;
1329 	u32 rctl;
1330 	u16 phy_reg;
1331 
1332 	rctl = er32(RCTL);
1333 	rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
1334 	ew32(RCTL, rctl);
1335 
1336 	switch (hw->mac_type) {
1337 	case e1000_82545:
1338 	case e1000_82546:
1339 	case e1000_82545_rev_3:
1340 	case e1000_82546_rev_3:
1341 	default:
1342 		hw->autoneg = true;
1343 		e1000_read_phy_reg(hw, PHY_CTRL, &phy_reg);
1344 		if (phy_reg & MII_CR_LOOPBACK) {
1345 			phy_reg &= ~MII_CR_LOOPBACK;
1346 			e1000_write_phy_reg(hw, PHY_CTRL, phy_reg);
1347 			e1000_phy_reset(hw);
1348 		}
1349 		break;
1350 	}
1351 }
1352 
1353 static void e1000_create_lbtest_frame(struct sk_buff *skb,
1354 				      unsigned int frame_size)
1355 {
1356 	memset(skb->data, 0xFF, frame_size);
1357 	frame_size &= ~1;
1358 	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
1359 	skb->data[frame_size / 2 + 10] = 0xBE;
1360 	skb->data[frame_size / 2 + 12] = 0xAF;
1361 }
1362 
1363 static int e1000_check_lbtest_frame(const unsigned char *data,
1364 				    unsigned int frame_size)
1365 {
1366 	frame_size &= ~1;
1367 	if (*(data + 3) == 0xFF) {
1368 		if ((*(data + frame_size / 2 + 10) == 0xBE) &&
1369 		    (*(data + frame_size / 2 + 12) == 0xAF)) {
1370 			return 0;
1371 		}
1372 	}
1373 	return 13;
1374 }
1375 
1376 static int e1000_run_loopback_test(struct e1000_adapter *adapter)
1377 {
1378 	struct e1000_hw *hw = &adapter->hw;
1379 	struct e1000_tx_ring *txdr = &adapter->test_tx_ring;
1380 	struct e1000_rx_ring *rxdr = &adapter->test_rx_ring;
1381 	struct pci_dev *pdev = adapter->pdev;
1382 	int i, j, k, l, lc, good_cnt, ret_val = 0;
1383 	unsigned long time;
1384 
1385 	ew32(RDT, rxdr->count - 1);
1386 
1387 	/* Calculate the loop count based on the largest descriptor ring
1388 	 * The idea is to wrap the largest ring a number of times using 64
1389 	 * send/receive pairs during each loop
1390 	 */
1391 
1392 	if (rxdr->count <= txdr->count)
1393 		lc = ((txdr->count / 64) * 2) + 1;
1394 	else
1395 		lc = ((rxdr->count / 64) * 2) + 1;
1396 
1397 	k = l = 0;
1398 	for (j = 0; j <= lc; j++) { /* loop count loop */
1399 		for (i = 0; i < 64; i++) { /* send the packets */
1400 			e1000_create_lbtest_frame(txdr->buffer_info[i].skb,
1401 						  1024);
1402 			dma_sync_single_for_device(&pdev->dev,
1403 						   txdr->buffer_info[k].dma,
1404 						   txdr->buffer_info[k].length,
1405 						   DMA_TO_DEVICE);
1406 			if (unlikely(++k == txdr->count))
1407 				k = 0;
1408 		}
1409 		ew32(TDT, k);
1410 		E1000_WRITE_FLUSH();
1411 		msleep(200);
1412 		time = jiffies; /* set the start time for the receive */
1413 		good_cnt = 0;
1414 		do { /* receive the sent packets */
1415 			dma_sync_single_for_cpu(&pdev->dev,
1416 						rxdr->buffer_info[l].dma,
1417 						E1000_RXBUFFER_2048,
1418 						DMA_FROM_DEVICE);
1419 
1420 			ret_val = e1000_check_lbtest_frame(
1421 					rxdr->buffer_info[l].rxbuf.data +
1422 					NET_SKB_PAD + NET_IP_ALIGN,
1423 					1024);
1424 			if (!ret_val)
1425 				good_cnt++;
1426 			if (unlikely(++l == rxdr->count))
1427 				l = 0;
1428 			/* time + 20 msecs (200 msecs on 2.4) is more than
1429 			 * enough time to complete the receives, if it's
1430 			 * exceeded, break and error off
1431 			 */
1432 		} while (good_cnt < 64 && time_after(time + 20, jiffies));
1433 
1434 		if (good_cnt != 64) {
1435 			ret_val = 13; /* ret_val is the same as mis-compare */
1436 			break;
1437 		}
1438 		if (time_after_eq(jiffies, time + 2)) {
1439 			ret_val = 14; /* error code for time out error */
1440 			break;
1441 		}
1442 	} /* end loop count loop */
1443 	return ret_val;
1444 }
1445 
1446 static int e1000_loopback_test(struct e1000_adapter *adapter, u64 *data)
1447 {
1448 	*data = e1000_setup_desc_rings(adapter);
1449 	if (*data)
1450 		goto out;
1451 	*data = e1000_setup_loopback_test(adapter);
1452 	if (*data)
1453 		goto err_loopback;
1454 	*data = e1000_run_loopback_test(adapter);
1455 	e1000_loopback_cleanup(adapter);
1456 
1457 err_loopback:
1458 	e1000_free_desc_rings(adapter);
1459 out:
1460 	return *data;
1461 }
1462 
1463 static int e1000_link_test(struct e1000_adapter *adapter, u64 *data)
1464 {
1465 	struct e1000_hw *hw = &adapter->hw;
1466 	*data = 0;
1467 	if (hw->media_type == e1000_media_type_internal_serdes) {
1468 		int i = 0;
1469 
1470 		hw->serdes_has_link = false;
1471 
1472 		/* On some blade server designs, link establishment
1473 		 * could take as long as 2-3 minutes
1474 		 */
1475 		do {
1476 			e1000_check_for_link(hw);
1477 			if (hw->serdes_has_link)
1478 				return *data;
1479 			msleep(20);
1480 		} while (i++ < 3750);
1481 
1482 		*data = 1;
1483 	} else {
1484 		e1000_check_for_link(hw);
1485 		if (hw->autoneg)  /* if auto_neg is set wait for it */
1486 			msleep(4000);
1487 
1488 		if (!(er32(STATUS) & E1000_STATUS_LU))
1489 			*data = 1;
1490 	}
1491 	return *data;
1492 }
1493 
1494 static int e1000_get_sset_count(struct net_device *netdev, int sset)
1495 {
1496 	switch (sset) {
1497 	case ETH_SS_TEST:
1498 		return E1000_TEST_LEN;
1499 	case ETH_SS_STATS:
1500 		return E1000_STATS_LEN;
1501 	default:
1502 		return -EOPNOTSUPP;
1503 	}
1504 }
1505 
1506 static void e1000_diag_test(struct net_device *netdev,
1507 			    struct ethtool_test *eth_test, u64 *data)
1508 {
1509 	struct e1000_adapter *adapter = netdev_priv(netdev);
1510 	struct e1000_hw *hw = &adapter->hw;
1511 	bool if_running = netif_running(netdev);
1512 
1513 	set_bit(__E1000_TESTING, &adapter->flags);
1514 	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1515 		/* Offline tests */
1516 
1517 		/* save speed, duplex, autoneg settings */
1518 		u16 autoneg_advertised = hw->autoneg_advertised;
1519 		u8 forced_speed_duplex = hw->forced_speed_duplex;
1520 		u8 autoneg = hw->autoneg;
1521 
1522 		e_info(hw, "offline testing starting\n");
1523 
1524 		/* Link test performed before hardware reset so autoneg doesn't
1525 		 * interfere with test result
1526 		 */
1527 		if (e1000_link_test(adapter, &data[4]))
1528 			eth_test->flags |= ETH_TEST_FL_FAILED;
1529 
1530 		if (if_running)
1531 			/* indicate we're in test mode */
1532 			e1000_close(netdev);
1533 		else
1534 			e1000_reset(adapter);
1535 
1536 		if (e1000_reg_test(adapter, &data[0]))
1537 			eth_test->flags |= ETH_TEST_FL_FAILED;
1538 
1539 		e1000_reset(adapter);
1540 		if (e1000_eeprom_test(adapter, &data[1]))
1541 			eth_test->flags |= ETH_TEST_FL_FAILED;
1542 
1543 		e1000_reset(adapter);
1544 		if (e1000_intr_test(adapter, &data[2]))
1545 			eth_test->flags |= ETH_TEST_FL_FAILED;
1546 
1547 		e1000_reset(adapter);
1548 		/* make sure the phy is powered up */
1549 		e1000_power_up_phy(adapter);
1550 		if (e1000_loopback_test(adapter, &data[3]))
1551 			eth_test->flags |= ETH_TEST_FL_FAILED;
1552 
1553 		/* restore speed, duplex, autoneg settings */
1554 		hw->autoneg_advertised = autoneg_advertised;
1555 		hw->forced_speed_duplex = forced_speed_duplex;
1556 		hw->autoneg = autoneg;
1557 
1558 		e1000_reset(adapter);
1559 		clear_bit(__E1000_TESTING, &adapter->flags);
1560 		if (if_running)
1561 			e1000_open(netdev);
1562 	} else {
1563 		e_info(hw, "online testing starting\n");
1564 		/* Online tests */
1565 		if (e1000_link_test(adapter, &data[4]))
1566 			eth_test->flags |= ETH_TEST_FL_FAILED;
1567 
1568 		/* Online tests aren't run; pass by default */
1569 		data[0] = 0;
1570 		data[1] = 0;
1571 		data[2] = 0;
1572 		data[3] = 0;
1573 
1574 		clear_bit(__E1000_TESTING, &adapter->flags);
1575 	}
1576 	msleep_interruptible(4 * 1000);
1577 }
1578 
1579 static int e1000_wol_exclusion(struct e1000_adapter *adapter,
1580 			       struct ethtool_wolinfo *wol)
1581 {
1582 	struct e1000_hw *hw = &adapter->hw;
1583 	int retval = 1; /* fail by default */
1584 
1585 	switch (hw->device_id) {
1586 	case E1000_DEV_ID_82542:
1587 	case E1000_DEV_ID_82543GC_FIBER:
1588 	case E1000_DEV_ID_82543GC_COPPER:
1589 	case E1000_DEV_ID_82544EI_FIBER:
1590 	case E1000_DEV_ID_82546EB_QUAD_COPPER:
1591 	case E1000_DEV_ID_82545EM_FIBER:
1592 	case E1000_DEV_ID_82545EM_COPPER:
1593 	case E1000_DEV_ID_82546GB_QUAD_COPPER:
1594 	case E1000_DEV_ID_82546GB_PCIE:
1595 		/* these don't support WoL at all */
1596 		wol->supported = 0;
1597 		break;
1598 	case E1000_DEV_ID_82546EB_FIBER:
1599 	case E1000_DEV_ID_82546GB_FIBER:
1600 		/* Wake events not supported on port B */
1601 		if (er32(STATUS) & E1000_STATUS_FUNC_1) {
1602 			wol->supported = 0;
1603 			break;
1604 		}
1605 		/* return success for non excluded adapter ports */
1606 		retval = 0;
1607 		break;
1608 	case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1609 		/* quad port adapters only support WoL on port A */
1610 		if (!adapter->quad_port_a) {
1611 			wol->supported = 0;
1612 			break;
1613 		}
1614 		/* return success for non excluded adapter ports */
1615 		retval = 0;
1616 		break;
1617 	default:
1618 		/* dual port cards only support WoL on port A from now on
1619 		 * unless it was enabled in the eeprom for port B
1620 		 * so exclude FUNC_1 ports from having WoL enabled
1621 		 */
1622 		if (er32(STATUS) & E1000_STATUS_FUNC_1 &&
1623 		    !adapter->eeprom_wol) {
1624 			wol->supported = 0;
1625 			break;
1626 		}
1627 
1628 		retval = 0;
1629 	}
1630 
1631 	return retval;
1632 }
1633 
1634 static void e1000_get_wol(struct net_device *netdev,
1635 			  struct ethtool_wolinfo *wol)
1636 {
1637 	struct e1000_adapter *adapter = netdev_priv(netdev);
1638 	struct e1000_hw *hw = &adapter->hw;
1639 
1640 	wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
1641 	wol->wolopts = 0;
1642 
1643 	/* this function will set ->supported = 0 and return 1 if wol is not
1644 	 * supported by this hardware
1645 	 */
1646 	if (e1000_wol_exclusion(adapter, wol) ||
1647 	    !device_can_wakeup(&adapter->pdev->dev))
1648 		return;
1649 
1650 	/* apply any specific unsupported masks here */
1651 	switch (hw->device_id) {
1652 	case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1653 		/* KSP3 does not support UCAST wake-ups */
1654 		wol->supported &= ~WAKE_UCAST;
1655 
1656 		if (adapter->wol & E1000_WUFC_EX)
1657 			e_err(drv, "Interface does not support directed "
1658 			      "(unicast) frame wake-up packets\n");
1659 		break;
1660 	default:
1661 		break;
1662 	}
1663 
1664 	if (adapter->wol & E1000_WUFC_EX)
1665 		wol->wolopts |= WAKE_UCAST;
1666 	if (adapter->wol & E1000_WUFC_MC)
1667 		wol->wolopts |= WAKE_MCAST;
1668 	if (adapter->wol & E1000_WUFC_BC)
1669 		wol->wolopts |= WAKE_BCAST;
1670 	if (adapter->wol & E1000_WUFC_MAG)
1671 		wol->wolopts |= WAKE_MAGIC;
1672 }
1673 
1674 static int e1000_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
1675 {
1676 	struct e1000_adapter *adapter = netdev_priv(netdev);
1677 	struct e1000_hw *hw = &adapter->hw;
1678 
1679 	if (wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))
1680 		return -EOPNOTSUPP;
1681 
1682 	if (e1000_wol_exclusion(adapter, wol) ||
1683 	    !device_can_wakeup(&adapter->pdev->dev))
1684 		return wol->wolopts ? -EOPNOTSUPP : 0;
1685 
1686 	switch (hw->device_id) {
1687 	case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1688 		if (wol->wolopts & WAKE_UCAST) {
1689 			e_err(drv, "Interface does not support directed "
1690 			      "(unicast) frame wake-up packets\n");
1691 			return -EOPNOTSUPP;
1692 		}
1693 		break;
1694 	default:
1695 		break;
1696 	}
1697 
1698 	/* these settings will always override what we currently have */
1699 	adapter->wol = 0;
1700 
1701 	if (wol->wolopts & WAKE_UCAST)
1702 		adapter->wol |= E1000_WUFC_EX;
1703 	if (wol->wolopts & WAKE_MCAST)
1704 		adapter->wol |= E1000_WUFC_MC;
1705 	if (wol->wolopts & WAKE_BCAST)
1706 		adapter->wol |= E1000_WUFC_BC;
1707 	if (wol->wolopts & WAKE_MAGIC)
1708 		adapter->wol |= E1000_WUFC_MAG;
1709 
1710 	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
1711 
1712 	return 0;
1713 }
1714 
1715 static int e1000_set_phys_id(struct net_device *netdev,
1716 			     enum ethtool_phys_id_state state)
1717 {
1718 	struct e1000_adapter *adapter = netdev_priv(netdev);
1719 	struct e1000_hw *hw = &adapter->hw;
1720 
1721 	switch (state) {
1722 	case ETHTOOL_ID_ACTIVE:
1723 		e1000_setup_led(hw);
1724 		return 2;
1725 
1726 	case ETHTOOL_ID_ON:
1727 		e1000_led_on(hw);
1728 		break;
1729 
1730 	case ETHTOOL_ID_OFF:
1731 		e1000_led_off(hw);
1732 		break;
1733 
1734 	case ETHTOOL_ID_INACTIVE:
1735 		e1000_cleanup_led(hw);
1736 	}
1737 
1738 	return 0;
1739 }
1740 
1741 static int e1000_get_coalesce(struct net_device *netdev,
1742 			      struct ethtool_coalesce *ec,
1743 			      struct kernel_ethtool_coalesce *kernel_coal,
1744 			      struct netlink_ext_ack *extack)
1745 {
1746 	struct e1000_adapter *adapter = netdev_priv(netdev);
1747 
1748 	if (adapter->hw.mac_type < e1000_82545)
1749 		return -EOPNOTSUPP;
1750 
1751 	if (adapter->itr_setting <= 4)
1752 		ec->rx_coalesce_usecs = adapter->itr_setting;
1753 	else
1754 		ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;
1755 
1756 	return 0;
1757 }
1758 
1759 static int e1000_set_coalesce(struct net_device *netdev,
1760 			      struct ethtool_coalesce *ec,
1761 			      struct kernel_ethtool_coalesce *kernel_coal,
1762 			      struct netlink_ext_ack *extack)
1763 {
1764 	struct e1000_adapter *adapter = netdev_priv(netdev);
1765 	struct e1000_hw *hw = &adapter->hw;
1766 
1767 	if (hw->mac_type < e1000_82545)
1768 		return -EOPNOTSUPP;
1769 
1770 	if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
1771 	    ((ec->rx_coalesce_usecs > 4) &&
1772 	     (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
1773 	    (ec->rx_coalesce_usecs == 2))
1774 		return -EINVAL;
1775 
1776 	if (ec->rx_coalesce_usecs == 4) {
1777 		adapter->itr = adapter->itr_setting = 4;
1778 	} else if (ec->rx_coalesce_usecs <= 3) {
1779 		adapter->itr = 20000;
1780 		adapter->itr_setting = ec->rx_coalesce_usecs;
1781 	} else {
1782 		adapter->itr = (1000000 / ec->rx_coalesce_usecs);
1783 		adapter->itr_setting = adapter->itr & ~3;
1784 	}
1785 
1786 	if (adapter->itr_setting != 0)
1787 		ew32(ITR, 1000000000 / (adapter->itr * 256));
1788 	else
1789 		ew32(ITR, 0);
1790 
1791 	return 0;
1792 }
1793 
1794 static int e1000_nway_reset(struct net_device *netdev)
1795 {
1796 	struct e1000_adapter *adapter = netdev_priv(netdev);
1797 
1798 	if (netif_running(netdev))
1799 		e1000_reinit_locked(adapter);
1800 	return 0;
1801 }
1802 
1803 static void e1000_get_ethtool_stats(struct net_device *netdev,
1804 				    struct ethtool_stats *stats, u64 *data)
1805 {
1806 	struct e1000_adapter *adapter = netdev_priv(netdev);
1807 	int i;
1808 	const struct e1000_stats *stat = e1000_gstrings_stats;
1809 
1810 	e1000_update_stats(adapter);
1811 	for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++, stat++) {
1812 		char *p;
1813 
1814 		switch (stat->type) {
1815 		case NETDEV_STATS:
1816 			p = (char *)netdev + stat->stat_offset;
1817 			break;
1818 		case E1000_STATS:
1819 			p = (char *)adapter + stat->stat_offset;
1820 			break;
1821 		default:
1822 			netdev_WARN_ONCE(netdev, "Invalid E1000 stat type: %u index %d\n",
1823 					 stat->type, i);
1824 			continue;
1825 		}
1826 
1827 		if (stat->sizeof_stat == sizeof(u64))
1828 			data[i] = *(u64 *)p;
1829 		else
1830 			data[i] = *(u32 *)p;
1831 	}
1832 /* BUG_ON(i != E1000_STATS_LEN); */
1833 }
1834 
1835 static void e1000_get_strings(struct net_device *netdev, u32 stringset,
1836 			      u8 *data)
1837 {
1838 	u8 *p = data;
1839 	int i;
1840 
1841 	switch (stringset) {
1842 	case ETH_SS_TEST:
1843 		memcpy(data, e1000_gstrings_test, sizeof(e1000_gstrings_test));
1844 		break;
1845 	case ETH_SS_STATS:
1846 		for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
1847 			memcpy(p, e1000_gstrings_stats[i].stat_string,
1848 			       ETH_GSTRING_LEN);
1849 			p += ETH_GSTRING_LEN;
1850 		}
1851 		/* BUG_ON(p - data != E1000_STATS_LEN * ETH_GSTRING_LEN); */
1852 		break;
1853 	}
1854 }
1855 
1856 static const struct ethtool_ops e1000_ethtool_ops = {
1857 	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1858 	.get_drvinfo		= e1000_get_drvinfo,
1859 	.get_regs_len		= e1000_get_regs_len,
1860 	.get_regs		= e1000_get_regs,
1861 	.get_wol		= e1000_get_wol,
1862 	.set_wol		= e1000_set_wol,
1863 	.get_msglevel		= e1000_get_msglevel,
1864 	.set_msglevel		= e1000_set_msglevel,
1865 	.nway_reset		= e1000_nway_reset,
1866 	.get_link		= e1000_get_link,
1867 	.get_eeprom_len		= e1000_get_eeprom_len,
1868 	.get_eeprom		= e1000_get_eeprom,
1869 	.set_eeprom		= e1000_set_eeprom,
1870 	.get_ringparam		= e1000_get_ringparam,
1871 	.set_ringparam		= e1000_set_ringparam,
1872 	.get_pauseparam		= e1000_get_pauseparam,
1873 	.set_pauseparam		= e1000_set_pauseparam,
1874 	.self_test		= e1000_diag_test,
1875 	.get_strings		= e1000_get_strings,
1876 	.set_phys_id		= e1000_set_phys_id,
1877 	.get_ethtool_stats	= e1000_get_ethtool_stats,
1878 	.get_sset_count		= e1000_get_sset_count,
1879 	.get_coalesce		= e1000_get_coalesce,
1880 	.set_coalesce		= e1000_set_coalesce,
1881 	.get_ts_info		= ethtool_op_get_ts_info,
1882 	.get_link_ksettings	= e1000_get_link_ksettings,
1883 	.set_link_ksettings	= e1000_set_link_ksettings,
1884 };
1885 
1886 void e1000_set_ethtool_ops(struct net_device *netdev)
1887 {
1888 	netdev->ethtool_ops = &e1000_ethtool_ops;
1889 }
1890