1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2006 Intel Corporation. */
3 
4 #include "e1000.h"
5 
6 /* This is the only thing that needs to be changed to adjust the
7  * maximum number of ports that the driver can manage.
8  */
9 
10 #define E1000_MAX_NIC 32
11 
12 #define OPTION_UNSET   -1
13 #define OPTION_DISABLED 0
14 #define OPTION_ENABLED  1
15 
16 /* All parameters are treated the same, as an integer array of values.
17  * This macro just reduces the need to repeat the same declaration code
18  * over and over (plus this helps to avoid typo bugs).
19  */
20 
21 #define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET }
22 #define E1000_PARAM(X, desc) \
23 	static int X[E1000_MAX_NIC+1] = E1000_PARAM_INIT; \
24 	static unsigned int num_##X; \
25 	module_param_array_named(X, X, int, &num_##X, 0); \
26 	MODULE_PARM_DESC(X, desc);
27 
28 /* Transmit Descriptor Count
29  *
30  * Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers
31  * Valid Range: 80-4096 for 82544 and newer
32  *
33  * Default Value: 256
34  */
35 E1000_PARAM(TxDescriptors, "Number of transmit descriptors");
36 
37 /* Receive Descriptor Count
38  *
39  * Valid Range: 80-256 for 82542 and 82543 gigabit ethernet controllers
40  * Valid Range: 80-4096 for 82544 and newer
41  *
42  * Default Value: 256
43  */
44 E1000_PARAM(RxDescriptors, "Number of receive descriptors");
45 
46 /* User Specified Speed Override
47  *
48  * Valid Range: 0, 10, 100, 1000
49  *  - 0    - auto-negotiate at all supported speeds
50  *  - 10   - only link at 10 Mbps
51  *  - 100  - only link at 100 Mbps
52  *  - 1000 - only link at 1000 Mbps
53  *
54  * Default Value: 0
55  */
56 E1000_PARAM(Speed, "Speed setting");
57 
58 /* User Specified Duplex Override
59  *
60  * Valid Range: 0-2
61  *  - 0 - auto-negotiate for duplex
62  *  - 1 - only link at half duplex
63  *  - 2 - only link at full duplex
64  *
65  * Default Value: 0
66  */
67 E1000_PARAM(Duplex, "Duplex setting");
68 
69 /* Auto-negotiation Advertisement Override
70  *
71  * Valid Range: 0x01-0x0F, 0x20-0x2F (copper); 0x20 (fiber)
72  *
73  * The AutoNeg value is a bit mask describing which speed and duplex
74  * combinations should be advertised during auto-negotiation.
75  * The supported speed and duplex modes are listed below
76  *
77  * Bit           7     6     5      4      3     2     1      0
78  * Speed (Mbps)  N/A   N/A   1000   N/A    100   100   10     10
79  * Duplex                    Full          Full  Half  Full   Half
80  *
81  * Default Value: 0x2F (copper); 0x20 (fiber)
82  */
83 E1000_PARAM(AutoNeg, "Advertised auto-negotiation setting");
84 #define AUTONEG_ADV_DEFAULT  0x2F
85 #define AUTONEG_ADV_MASK     0x2F
86 
87 /* User Specified Flow Control Override
88  *
89  * Valid Range: 0-3
90  *  - 0 - No Flow Control
91  *  - 1 - Rx only, respond to PAUSE frames but do not generate them
92  *  - 2 - Tx only, generate PAUSE frames but ignore them on receive
93  *  - 3 - Full Flow Control Support
94  *
95  * Default Value: Read flow control settings from the EEPROM
96  */
97 E1000_PARAM(FlowControl, "Flow Control setting");
98 #define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
99 
100 /* XsumRX - Receive Checksum Offload Enable/Disable
101  *
102  * Valid Range: 0, 1
103  *  - 0 - disables all checksum offload
104  *  - 1 - enables receive IP/TCP/UDP checksum offload
105  *        on 82543 and newer -based NICs
106  *
107  * Default Value: 1
108  */
109 E1000_PARAM(XsumRX, "Disable or enable Receive Checksum offload");
110 
111 /* Transmit Interrupt Delay in units of 1.024 microseconds
112  *  Tx interrupt delay needs to typically be set to something non zero
113  *
114  * Valid Range: 0-65535
115  */
116 E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");
117 #define DEFAULT_TIDV                   8
118 #define MAX_TXDELAY               0xFFFF
119 #define MIN_TXDELAY                    0
120 
121 /* Transmit Absolute Interrupt Delay in units of 1.024 microseconds
122  *
123  * Valid Range: 0-65535
124  */
125 E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");
126 #define DEFAULT_TADV                  32
127 #define MAX_TXABSDELAY            0xFFFF
128 #define MIN_TXABSDELAY                 0
129 
130 /* Receive Interrupt Delay in units of 1.024 microseconds
131  *   hardware will likely hang if you set this to anything but zero.
132  *
133  * Valid Range: 0-65535
134  */
135 E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");
136 #define DEFAULT_RDTR                   0
137 #define MAX_RXDELAY               0xFFFF
138 #define MIN_RXDELAY                    0
139 
140 /* Receive Absolute Interrupt Delay in units of 1.024 microseconds
141  *
142  * Valid Range: 0-65535
143  */
144 E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
145 #define DEFAULT_RADV                   8
146 #define MAX_RXABSDELAY            0xFFFF
147 #define MIN_RXABSDELAY                 0
148 
149 /* Interrupt Throttle Rate (interrupts/sec)
150  *
151  * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
152  */
153 E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
154 #define DEFAULT_ITR                    3
155 #define MAX_ITR                   100000
156 #define MIN_ITR                      100
157 
158 /* Enable Smart Power Down of the PHY
159  *
160  * Valid Range: 0, 1
161  *
162  * Default Value: 0 (disabled)
163  */
164 E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
165 
166 struct e1000_option {
167 	enum { enable_option, range_option, list_option } type;
168 	const char *name;
169 	const char *err;
170 	int def;
171 	union {
172 		struct { /* range_option info */
173 			int min;
174 			int max;
175 		} r;
176 		struct { /* list_option info */
177 			int nr;
178 			const struct e1000_opt_list { int i; char *str; } *p;
179 		} l;
180 	} arg;
181 };
182 
183 static int e1000_validate_option(unsigned int *value,
184 				 const struct e1000_option *opt,
185 				 struct e1000_adapter *adapter)
186 {
187 	if (*value == OPTION_UNSET) {
188 		*value = opt->def;
189 		return 0;
190 	}
191 
192 	switch (opt->type) {
193 	case enable_option:
194 		switch (*value) {
195 		case OPTION_ENABLED:
196 			e_dev_info("%s Enabled\n", opt->name);
197 			return 0;
198 		case OPTION_DISABLED:
199 			e_dev_info("%s Disabled\n", opt->name);
200 			return 0;
201 		}
202 		break;
203 	case range_option:
204 		if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
205 			e_dev_info("%s set to %i\n", opt->name, *value);
206 			return 0;
207 		}
208 		break;
209 	case list_option: {
210 		int i;
211 		const struct e1000_opt_list *ent;
212 
213 		for (i = 0; i < opt->arg.l.nr; i++) {
214 			ent = &opt->arg.l.p[i];
215 			if (*value == ent->i) {
216 				if (ent->str[0] != '\0')
217 					e_dev_info("%s\n", ent->str);
218 				return 0;
219 			}
220 		}
221 	}
222 		break;
223 	default:
224 		BUG();
225 	}
226 
227 	e_dev_info("Invalid %s value specified (%i) %s\n",
228 	       opt->name, *value, opt->err);
229 	*value = opt->def;
230 	return -1;
231 }
232 
233 static void e1000_check_fiber_options(struct e1000_adapter *adapter);
234 static void e1000_check_copper_options(struct e1000_adapter *adapter);
235 
236 /**
237  * e1000_check_options - Range Checking for Command Line Parameters
238  * @adapter: board private structure
239  *
240  * This routine checks all command line parameters for valid user
241  * input.  If an invalid value is given, or if no user specified
242  * value exists, a default value is used.  The final value is stored
243  * in a variable in the adapter structure.
244  **/
245 void e1000_check_options(struct e1000_adapter *adapter)
246 {
247 	struct e1000_option opt;
248 	int bd = adapter->bd_number;
249 
250 	if (bd >= E1000_MAX_NIC) {
251 		e_dev_warn("Warning: no configuration for board #%i "
252 			   "using defaults for all values\n", bd);
253 	}
254 
255 	{ /* Transmit Descriptor Count */
256 		struct e1000_tx_ring *tx_ring = adapter->tx_ring;
257 		int i;
258 		e1000_mac_type mac_type = adapter->hw.mac_type;
259 
260 		opt = (struct e1000_option) {
261 			.type = range_option,
262 			.name = "Transmit Descriptors",
263 			.err  = "using default of "
264 				__MODULE_STRING(E1000_DEFAULT_TXD),
265 			.def  = E1000_DEFAULT_TXD,
266 			.arg  = { .r = {
267 				.min = E1000_MIN_TXD,
268 				.max = mac_type < e1000_82544 ? E1000_MAX_TXD : E1000_MAX_82544_TXD
269 				}}
270 		};
271 
272 		if (num_TxDescriptors > bd) {
273 			tx_ring->count = TxDescriptors[bd];
274 			e1000_validate_option(&tx_ring->count, &opt, adapter);
275 			tx_ring->count = ALIGN(tx_ring->count,
276 						REQ_TX_DESCRIPTOR_MULTIPLE);
277 		} else {
278 			tx_ring->count = opt.def;
279 		}
280 		for (i = 0; i < adapter->num_tx_queues; i++)
281 			tx_ring[i].count = tx_ring->count;
282 	}
283 	{ /* Receive Descriptor Count */
284 		struct e1000_rx_ring *rx_ring = adapter->rx_ring;
285 		int i;
286 		e1000_mac_type mac_type = adapter->hw.mac_type;
287 
288 		opt = (struct e1000_option) {
289 			.type = range_option,
290 			.name = "Receive Descriptors",
291 			.err  = "using default of "
292 				__MODULE_STRING(E1000_DEFAULT_RXD),
293 			.def  = E1000_DEFAULT_RXD,
294 			.arg  = { .r = {
295 				.min = E1000_MIN_RXD,
296 				.max = mac_type < e1000_82544 ? E1000_MAX_RXD :
297 				       E1000_MAX_82544_RXD
298 			}}
299 		};
300 
301 		if (num_RxDescriptors > bd) {
302 			rx_ring->count = RxDescriptors[bd];
303 			e1000_validate_option(&rx_ring->count, &opt, adapter);
304 			rx_ring->count = ALIGN(rx_ring->count,
305 						REQ_RX_DESCRIPTOR_MULTIPLE);
306 		} else {
307 			rx_ring->count = opt.def;
308 		}
309 		for (i = 0; i < adapter->num_rx_queues; i++)
310 			rx_ring[i].count = rx_ring->count;
311 	}
312 	{ /* Checksum Offload Enable/Disable */
313 		opt = (struct e1000_option) {
314 			.type = enable_option,
315 			.name = "Checksum Offload",
316 			.err  = "defaulting to Enabled",
317 			.def  = OPTION_ENABLED
318 		};
319 
320 		if (num_XsumRX > bd) {
321 			unsigned int rx_csum = XsumRX[bd];
322 			e1000_validate_option(&rx_csum, &opt, adapter);
323 			adapter->rx_csum = rx_csum;
324 		} else {
325 			adapter->rx_csum = opt.def;
326 		}
327 	}
328 	{ /* Flow Control */
329 
330 		static const struct e1000_opt_list fc_list[] = {
331 		       { E1000_FC_NONE, "Flow Control Disabled" },
332 		       { E1000_FC_RX_PAUSE, "Flow Control Receive Only" },
333 		       { E1000_FC_TX_PAUSE, "Flow Control Transmit Only" },
334 		       { E1000_FC_FULL, "Flow Control Enabled" },
335 		       { E1000_FC_DEFAULT, "Flow Control Hardware Default" }
336 		};
337 
338 		opt = (struct e1000_option) {
339 			.type = list_option,
340 			.name = "Flow Control",
341 			.err  = "reading default settings from EEPROM",
342 			.def  = E1000_FC_DEFAULT,
343 			.arg  = { .l = { .nr = ARRAY_SIZE(fc_list),
344 					 .p = fc_list }}
345 		};
346 
347 		if (num_FlowControl > bd) {
348 			unsigned int fc = FlowControl[bd];
349 			e1000_validate_option(&fc, &opt, adapter);
350 			adapter->hw.fc = adapter->hw.original_fc = fc;
351 		} else {
352 			adapter->hw.fc = adapter->hw.original_fc = opt.def;
353 		}
354 	}
355 	{ /* Transmit Interrupt Delay */
356 		opt = (struct e1000_option) {
357 			.type = range_option,
358 			.name = "Transmit Interrupt Delay",
359 			.err  = "using default of " __MODULE_STRING(DEFAULT_TIDV),
360 			.def  = DEFAULT_TIDV,
361 			.arg  = { .r = { .min = MIN_TXDELAY,
362 					 .max = MAX_TXDELAY }}
363 		};
364 
365 		if (num_TxIntDelay > bd) {
366 			adapter->tx_int_delay = TxIntDelay[bd];
367 			e1000_validate_option(&adapter->tx_int_delay, &opt,
368 			                      adapter);
369 		} else {
370 			adapter->tx_int_delay = opt.def;
371 		}
372 	}
373 	{ /* Transmit Absolute Interrupt Delay */
374 		opt = (struct e1000_option) {
375 			.type = range_option,
376 			.name = "Transmit Absolute Interrupt Delay",
377 			.err  = "using default of " __MODULE_STRING(DEFAULT_TADV),
378 			.def  = DEFAULT_TADV,
379 			.arg  = { .r = { .min = MIN_TXABSDELAY,
380 					 .max = MAX_TXABSDELAY }}
381 		};
382 
383 		if (num_TxAbsIntDelay > bd) {
384 			adapter->tx_abs_int_delay = TxAbsIntDelay[bd];
385 			e1000_validate_option(&adapter->tx_abs_int_delay, &opt,
386 					      adapter);
387 		} else {
388 			adapter->tx_abs_int_delay = opt.def;
389 		}
390 	}
391 	{ /* Receive Interrupt Delay */
392 		opt = (struct e1000_option) {
393 			.type = range_option,
394 			.name = "Receive Interrupt Delay",
395 			.err  = "using default of " __MODULE_STRING(DEFAULT_RDTR),
396 			.def  = DEFAULT_RDTR,
397 			.arg  = { .r = { .min = MIN_RXDELAY,
398 					 .max = MAX_RXDELAY }}
399 		};
400 
401 		if (num_RxIntDelay > bd) {
402 			adapter->rx_int_delay = RxIntDelay[bd];
403 			e1000_validate_option(&adapter->rx_int_delay, &opt,
404 					      adapter);
405 		} else {
406 			adapter->rx_int_delay = opt.def;
407 		}
408 	}
409 	{ /* Receive Absolute Interrupt Delay */
410 		opt = (struct e1000_option) {
411 			.type = range_option,
412 			.name = "Receive Absolute Interrupt Delay",
413 			.err  = "using default of " __MODULE_STRING(DEFAULT_RADV),
414 			.def  = DEFAULT_RADV,
415 			.arg  = { .r = { .min = MIN_RXABSDELAY,
416 					 .max = MAX_RXABSDELAY }}
417 		};
418 
419 		if (num_RxAbsIntDelay > bd) {
420 			adapter->rx_abs_int_delay = RxAbsIntDelay[bd];
421 			e1000_validate_option(&adapter->rx_abs_int_delay, &opt,
422 					      adapter);
423 		} else {
424 			adapter->rx_abs_int_delay = opt.def;
425 		}
426 	}
427 	{ /* Interrupt Throttling Rate */
428 		opt = (struct e1000_option) {
429 			.type = range_option,
430 			.name = "Interrupt Throttling Rate (ints/sec)",
431 			.err  = "using default of " __MODULE_STRING(DEFAULT_ITR),
432 			.def  = DEFAULT_ITR,
433 			.arg  = { .r = { .min = MIN_ITR,
434 					 .max = MAX_ITR }}
435 		};
436 
437 		if (num_InterruptThrottleRate > bd) {
438 			adapter->itr = InterruptThrottleRate[bd];
439 			switch (adapter->itr) {
440 			case 0:
441 				e_dev_info("%s turned off\n", opt.name);
442 				break;
443 			case 1:
444 				e_dev_info("%s set to dynamic mode\n",
445 					   opt.name);
446 				adapter->itr_setting = adapter->itr;
447 				adapter->itr = 20000;
448 				break;
449 			case 3:
450 				e_dev_info("%s set to dynamic conservative "
451 					   "mode\n", opt.name);
452 				adapter->itr_setting = adapter->itr;
453 				adapter->itr = 20000;
454 				break;
455 			case 4:
456 				e_dev_info("%s set to simplified "
457 					   "(2000-8000) ints mode\n", opt.name);
458 				adapter->itr_setting = adapter->itr;
459 				break;
460 			default:
461 				e1000_validate_option(&adapter->itr, &opt,
462 						      adapter);
463 				/* save the setting, because the dynamic bits
464 				 * change itr.
465 				 * clear the lower two bits because they are
466 				 * used as control
467 				 */
468 				adapter->itr_setting = adapter->itr & ~3;
469 				break;
470 			}
471 		} else {
472 			adapter->itr_setting = opt.def;
473 			adapter->itr = 20000;
474 		}
475 	}
476 	{ /* Smart Power Down */
477 		opt = (struct e1000_option) {
478 			.type = enable_option,
479 			.name = "PHY Smart Power Down",
480 			.err  = "defaulting to Disabled",
481 			.def  = OPTION_DISABLED
482 		};
483 
484 		if (num_SmartPowerDownEnable > bd) {
485 			unsigned int spd = SmartPowerDownEnable[bd];
486 			e1000_validate_option(&spd, &opt, adapter);
487 			adapter->smart_power_down = spd;
488 		} else {
489 			adapter->smart_power_down = opt.def;
490 		}
491 	}
492 
493 	switch (adapter->hw.media_type) {
494 	case e1000_media_type_fiber:
495 	case e1000_media_type_internal_serdes:
496 		e1000_check_fiber_options(adapter);
497 		break;
498 	case e1000_media_type_copper:
499 		e1000_check_copper_options(adapter);
500 		break;
501 	default:
502 		BUG();
503 	}
504 }
505 
506 /**
507  * e1000_check_fiber_options - Range Checking for Link Options, Fiber Version
508  * @adapter: board private structure
509  *
510  * Handles speed and duplex options on fiber adapters
511  **/
512 static void e1000_check_fiber_options(struct e1000_adapter *adapter)
513 {
514 	int bd = adapter->bd_number;
515 	if (num_Speed > bd) {
516 		e_dev_info("Speed not valid for fiber adapters, parameter "
517 			   "ignored\n");
518 	}
519 
520 	if (num_Duplex > bd) {
521 		e_dev_info("Duplex not valid for fiber adapters, parameter "
522 			   "ignored\n");
523 	}
524 
525 	if ((num_AutoNeg > bd) && (AutoNeg[bd] != 0x20)) {
526 		e_dev_info("AutoNeg other than 1000/Full is not valid for fiber"
527 			   "adapters, parameter ignored\n");
528 	}
529 }
530 
531 /**
532  * e1000_check_copper_options - Range Checking for Link Options, Copper Version
533  * @adapter: board private structure
534  *
535  * Handles speed and duplex options on copper adapters
536  **/
537 static void e1000_check_copper_options(struct e1000_adapter *adapter)
538 {
539 	struct e1000_option opt;
540 	unsigned int speed, dplx, an;
541 	int bd = adapter->bd_number;
542 
543 	{ /* Speed */
544 		static const struct e1000_opt_list speed_list[] = {
545 			{          0, "" },
546 			{   SPEED_10, "" },
547 			{  SPEED_100, "" },
548 			{ SPEED_1000, "" }};
549 
550 		opt = (struct e1000_option) {
551 			.type = list_option,
552 			.name = "Speed",
553 			.err  = "parameter ignored",
554 			.def  = 0,
555 			.arg  = { .l = { .nr = ARRAY_SIZE(speed_list),
556 					 .p = speed_list }}
557 		};
558 
559 		if (num_Speed > bd) {
560 			speed = Speed[bd];
561 			e1000_validate_option(&speed, &opt, adapter);
562 		} else {
563 			speed = opt.def;
564 		}
565 	}
566 	{ /* Duplex */
567 		static const struct e1000_opt_list dplx_list[] = {
568 			{           0, "" },
569 			{ HALF_DUPLEX, "" },
570 			{ FULL_DUPLEX, "" }};
571 
572 		opt = (struct e1000_option) {
573 			.type = list_option,
574 			.name = "Duplex",
575 			.err  = "parameter ignored",
576 			.def  = 0,
577 			.arg  = { .l = { .nr = ARRAY_SIZE(dplx_list),
578 					 .p = dplx_list }}
579 		};
580 
581 		if (num_Duplex > bd) {
582 			dplx = Duplex[bd];
583 			e1000_validate_option(&dplx, &opt, adapter);
584 		} else {
585 			dplx = opt.def;
586 		}
587 	}
588 
589 	if ((num_AutoNeg > bd) && (speed != 0 || dplx != 0)) {
590 		e_dev_info("AutoNeg specified along with Speed or Duplex, "
591 			   "parameter ignored\n");
592 		adapter->hw.autoneg_advertised = AUTONEG_ADV_DEFAULT;
593 	} else { /* Autoneg */
594 		static const struct e1000_opt_list an_list[] =
595 			#define AA "AutoNeg advertising "
596 			{{ 0x01, AA "10/HD" },
597 			 { 0x02, AA "10/FD" },
598 			 { 0x03, AA "10/FD, 10/HD" },
599 			 { 0x04, AA "100/HD" },
600 			 { 0x05, AA "100/HD, 10/HD" },
601 			 { 0x06, AA "100/HD, 10/FD" },
602 			 { 0x07, AA "100/HD, 10/FD, 10/HD" },
603 			 { 0x08, AA "100/FD" },
604 			 { 0x09, AA "100/FD, 10/HD" },
605 			 { 0x0a, AA "100/FD, 10/FD" },
606 			 { 0x0b, AA "100/FD, 10/FD, 10/HD" },
607 			 { 0x0c, AA "100/FD, 100/HD" },
608 			 { 0x0d, AA "100/FD, 100/HD, 10/HD" },
609 			 { 0x0e, AA "100/FD, 100/HD, 10/FD" },
610 			 { 0x0f, AA "100/FD, 100/HD, 10/FD, 10/HD" },
611 			 { 0x20, AA "1000/FD" },
612 			 { 0x21, AA "1000/FD, 10/HD" },
613 			 { 0x22, AA "1000/FD, 10/FD" },
614 			 { 0x23, AA "1000/FD, 10/FD, 10/HD" },
615 			 { 0x24, AA "1000/FD, 100/HD" },
616 			 { 0x25, AA "1000/FD, 100/HD, 10/HD" },
617 			 { 0x26, AA "1000/FD, 100/HD, 10/FD" },
618 			 { 0x27, AA "1000/FD, 100/HD, 10/FD, 10/HD" },
619 			 { 0x28, AA "1000/FD, 100/FD" },
620 			 { 0x29, AA "1000/FD, 100/FD, 10/HD" },
621 			 { 0x2a, AA "1000/FD, 100/FD, 10/FD" },
622 			 { 0x2b, AA "1000/FD, 100/FD, 10/FD, 10/HD" },
623 			 { 0x2c, AA "1000/FD, 100/FD, 100/HD" },
624 			 { 0x2d, AA "1000/FD, 100/FD, 100/HD, 10/HD" },
625 			 { 0x2e, AA "1000/FD, 100/FD, 100/HD, 10/FD" },
626 			 { 0x2f, AA "1000/FD, 100/FD, 100/HD, 10/FD, 10/HD" }};
627 
628 		opt = (struct e1000_option) {
629 			.type = list_option,
630 			.name = "AutoNeg",
631 			.err  = "parameter ignored",
632 			.def  = AUTONEG_ADV_DEFAULT,
633 			.arg  = { .l = { .nr = ARRAY_SIZE(an_list),
634 					 .p = an_list }}
635 		};
636 
637 		if (num_AutoNeg > bd) {
638 			an = AutoNeg[bd];
639 			e1000_validate_option(&an, &opt, adapter);
640 		} else {
641 			an = opt.def;
642 		}
643 		adapter->hw.autoneg_advertised = an;
644 	}
645 
646 	switch (speed + dplx) {
647 	case 0:
648 		adapter->hw.autoneg = adapter->fc_autoneg = 1;
649 		if ((num_Speed > bd) && (speed != 0 || dplx != 0))
650 			e_dev_info("Speed and duplex autonegotiation "
651 				   "enabled\n");
652 		break;
653 	case HALF_DUPLEX:
654 		e_dev_info("Half Duplex specified without Speed\n");
655 		e_dev_info("Using Autonegotiation at Half Duplex only\n");
656 		adapter->hw.autoneg = adapter->fc_autoneg = 1;
657 		adapter->hw.autoneg_advertised = ADVERTISE_10_HALF |
658 						 ADVERTISE_100_HALF;
659 		break;
660 	case FULL_DUPLEX:
661 		e_dev_info("Full Duplex specified without Speed\n");
662 		e_dev_info("Using Autonegotiation at Full Duplex only\n");
663 		adapter->hw.autoneg = adapter->fc_autoneg = 1;
664 		adapter->hw.autoneg_advertised = ADVERTISE_10_FULL |
665 						 ADVERTISE_100_FULL |
666 						 ADVERTISE_1000_FULL;
667 		break;
668 	case SPEED_10:
669 		e_dev_info("10 Mbps Speed specified without Duplex\n");
670 		e_dev_info("Using Autonegotiation at 10 Mbps only\n");
671 		adapter->hw.autoneg = adapter->fc_autoneg = 1;
672 		adapter->hw.autoneg_advertised = ADVERTISE_10_HALF |
673 						 ADVERTISE_10_FULL;
674 		break;
675 	case SPEED_10 + HALF_DUPLEX:
676 		e_dev_info("Forcing to 10 Mbps Half Duplex\n");
677 		adapter->hw.autoneg = adapter->fc_autoneg = 0;
678 		adapter->hw.forced_speed_duplex = e1000_10_half;
679 		adapter->hw.autoneg_advertised = 0;
680 		break;
681 	case SPEED_10 + FULL_DUPLEX:
682 		e_dev_info("Forcing to 10 Mbps Full Duplex\n");
683 		adapter->hw.autoneg = adapter->fc_autoneg = 0;
684 		adapter->hw.forced_speed_duplex = e1000_10_full;
685 		adapter->hw.autoneg_advertised = 0;
686 		break;
687 	case SPEED_100:
688 		e_dev_info("100 Mbps Speed specified without Duplex\n");
689 		e_dev_info("Using Autonegotiation at 100 Mbps only\n");
690 		adapter->hw.autoneg = adapter->fc_autoneg = 1;
691 		adapter->hw.autoneg_advertised = ADVERTISE_100_HALF |
692 						 ADVERTISE_100_FULL;
693 		break;
694 	case SPEED_100 + HALF_DUPLEX:
695 		e_dev_info("Forcing to 100 Mbps Half Duplex\n");
696 		adapter->hw.autoneg = adapter->fc_autoneg = 0;
697 		adapter->hw.forced_speed_duplex = e1000_100_half;
698 		adapter->hw.autoneg_advertised = 0;
699 		break;
700 	case SPEED_100 + FULL_DUPLEX:
701 		e_dev_info("Forcing to 100 Mbps Full Duplex\n");
702 		adapter->hw.autoneg = adapter->fc_autoneg = 0;
703 		adapter->hw.forced_speed_duplex = e1000_100_full;
704 		adapter->hw.autoneg_advertised = 0;
705 		break;
706 	case SPEED_1000:
707 		e_dev_info("1000 Mbps Speed specified without Duplex\n");
708 		goto full_duplex_only;
709 	case SPEED_1000 + HALF_DUPLEX:
710 		e_dev_info("Half Duplex is not supported at 1000 Mbps\n");
711 		fallthrough;
712 	case SPEED_1000 + FULL_DUPLEX:
713 full_duplex_only:
714 		e_dev_info("Using Autonegotiation at 1000 Mbps Full Duplex "
715 			   "only\n");
716 		adapter->hw.autoneg = adapter->fc_autoneg = 1;
717 		adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
718 		break;
719 	default:
720 		BUG();
721 	}
722 
723 	/* Speed, AutoNeg and MDI/MDI-X must all play nice */
724 	if (e1000_validate_mdi_setting(&(adapter->hw)) < 0) {
725 		e_dev_info("Speed, AutoNeg and MDI-X specs are incompatible. "
726 			   "Setting MDI-X to a compatible value.\n");
727 	}
728 }
729 
730