1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3 
4 /* 82571EB Gigabit Ethernet Controller
5  * 82571EB Gigabit Ethernet Controller (Copper)
6  * 82571EB Gigabit Ethernet Controller (Fiber)
7  * 82571EB Dual Port Gigabit Mezzanine Adapter
8  * 82571EB Quad Port Gigabit Mezzanine Adapter
9  * 82571PT Gigabit PT Quad Port Server ExpressModule
10  * 82572EI Gigabit Ethernet Controller (Copper)
11  * 82572EI Gigabit Ethernet Controller (Fiber)
12  * 82572EI Gigabit Ethernet Controller
13  * 82573V Gigabit Ethernet Controller (Copper)
14  * 82573E Gigabit Ethernet Controller (Copper)
15  * 82573L Gigabit Ethernet Controller
16  * 82574L Gigabit Network Connection
17  * 82583V Gigabit Network Connection
18  */
19 
20 #include "e1000.h"
21 
22 static s32 e1000_get_phy_id_82571(struct e1000_hw *hw);
23 static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw);
24 static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw);
25 static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw);
26 static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
27 				      u16 words, u16 *data);
28 static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw);
29 static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw);
30 static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw);
31 static bool e1000_check_mng_mode_82574(struct e1000_hw *hw);
32 static s32 e1000_led_on_82574(struct e1000_hw *hw);
33 static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw);
34 static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw);
35 static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw);
36 static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw);
37 static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw);
38 static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active);
39 static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active);
40 
41 /**
42  *  e1000_init_phy_params_82571 - Init PHY func ptrs.
43  *  @hw: pointer to the HW structure
44  **/
e1000_init_phy_params_82571(struct e1000_hw * hw)45 static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
46 {
47 	struct e1000_phy_info *phy = &hw->phy;
48 	s32 ret_val;
49 
50 	if (hw->phy.media_type != e1000_media_type_copper) {
51 		phy->type = e1000_phy_none;
52 		return 0;
53 	}
54 
55 	phy->addr = 1;
56 	phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
57 	phy->reset_delay_us = 100;
58 
59 	phy->ops.power_up = e1000_power_up_phy_copper;
60 	phy->ops.power_down = e1000_power_down_phy_copper_82571;
61 
62 	switch (hw->mac.type) {
63 	case e1000_82571:
64 	case e1000_82572:
65 		phy->type = e1000_phy_igp_2;
66 		break;
67 	case e1000_82573:
68 		phy->type = e1000_phy_m88;
69 		break;
70 	case e1000_82574:
71 	case e1000_82583:
72 		phy->type = e1000_phy_bm;
73 		phy->ops.acquire = e1000_get_hw_semaphore_82574;
74 		phy->ops.release = e1000_put_hw_semaphore_82574;
75 		phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82574;
76 		phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82574;
77 		break;
78 	default:
79 		return -E1000_ERR_PHY;
80 	}
81 
82 	/* This can only be done after all function pointers are setup. */
83 	ret_val = e1000_get_phy_id_82571(hw);
84 	if (ret_val) {
85 		e_dbg("Error getting PHY ID\n");
86 		return ret_val;
87 	}
88 
89 	/* Verify phy id */
90 	switch (hw->mac.type) {
91 	case e1000_82571:
92 	case e1000_82572:
93 		if (phy->id != IGP01E1000_I_PHY_ID)
94 			ret_val = -E1000_ERR_PHY;
95 		break;
96 	case e1000_82573:
97 		if (phy->id != M88E1111_I_PHY_ID)
98 			ret_val = -E1000_ERR_PHY;
99 		break;
100 	case e1000_82574:
101 	case e1000_82583:
102 		if (phy->id != BME1000_E_PHY_ID_R2)
103 			ret_val = -E1000_ERR_PHY;
104 		break;
105 	default:
106 		ret_val = -E1000_ERR_PHY;
107 		break;
108 	}
109 
110 	if (ret_val)
111 		e_dbg("PHY ID unknown: type = 0x%08x\n", phy->id);
112 
113 	return ret_val;
114 }
115 
116 /**
117  *  e1000_init_nvm_params_82571 - Init NVM func ptrs.
118  *  @hw: pointer to the HW structure
119  **/
e1000_init_nvm_params_82571(struct e1000_hw * hw)120 static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)
121 {
122 	struct e1000_nvm_info *nvm = &hw->nvm;
123 	u32 eecd = er32(EECD);
124 	u16 size;
125 
126 	nvm->opcode_bits = 8;
127 	nvm->delay_usec = 1;
128 	switch (nvm->override) {
129 	case e1000_nvm_override_spi_large:
130 		nvm->page_size = 32;
131 		nvm->address_bits = 16;
132 		break;
133 	case e1000_nvm_override_spi_small:
134 		nvm->page_size = 8;
135 		nvm->address_bits = 8;
136 		break;
137 	default:
138 		nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
139 		nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
140 		break;
141 	}
142 
143 	switch (hw->mac.type) {
144 	case e1000_82573:
145 	case e1000_82574:
146 	case e1000_82583:
147 		if (((eecd >> 15) & 0x3) == 0x3) {
148 			nvm->type = e1000_nvm_flash_hw;
149 			nvm->word_size = 2048;
150 			/* Autonomous Flash update bit must be cleared due
151 			 * to Flash update issue.
152 			 */
153 			eecd &= ~E1000_EECD_AUPDEN;
154 			ew32(EECD, eecd);
155 			break;
156 		}
157 		fallthrough;
158 	default:
159 		nvm->type = e1000_nvm_eeprom_spi;
160 		size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
161 			     E1000_EECD_SIZE_EX_SHIFT);
162 		/* Added to a constant, "size" becomes the left-shift value
163 		 * for setting word_size.
164 		 */
165 		size += NVM_WORD_SIZE_BASE_SHIFT;
166 
167 		/* EEPROM access above 16k is unsupported */
168 		if (size > 14)
169 			size = 14;
170 		nvm->word_size = BIT(size);
171 		break;
172 	}
173 
174 	/* Function Pointers */
175 	switch (hw->mac.type) {
176 	case e1000_82574:
177 	case e1000_82583:
178 		nvm->ops.acquire = e1000_get_hw_semaphore_82574;
179 		nvm->ops.release = e1000_put_hw_semaphore_82574;
180 		break;
181 	default:
182 		break;
183 	}
184 
185 	return 0;
186 }
187 
188 /**
189  *  e1000_init_mac_params_82571 - Init MAC func ptrs.
190  *  @hw: pointer to the HW structure
191  **/
e1000_init_mac_params_82571(struct e1000_hw * hw)192 static s32 e1000_init_mac_params_82571(struct e1000_hw *hw)
193 {
194 	struct e1000_mac_info *mac = &hw->mac;
195 	u32 swsm = 0;
196 	u32 swsm2 = 0;
197 	bool force_clear_smbi = false;
198 
199 	/* Set media type and media-dependent function pointers */
200 	switch (hw->adapter->pdev->device) {
201 	case E1000_DEV_ID_82571EB_FIBER:
202 	case E1000_DEV_ID_82572EI_FIBER:
203 	case E1000_DEV_ID_82571EB_QUAD_FIBER:
204 		hw->phy.media_type = e1000_media_type_fiber;
205 		mac->ops.setup_physical_interface =
206 		    e1000_setup_fiber_serdes_link_82571;
207 		mac->ops.check_for_link = e1000e_check_for_fiber_link;
208 		mac->ops.get_link_up_info =
209 		    e1000e_get_speed_and_duplex_fiber_serdes;
210 		break;
211 	case E1000_DEV_ID_82571EB_SERDES:
212 	case E1000_DEV_ID_82571EB_SERDES_DUAL:
213 	case E1000_DEV_ID_82571EB_SERDES_QUAD:
214 	case E1000_DEV_ID_82572EI_SERDES:
215 		hw->phy.media_type = e1000_media_type_internal_serdes;
216 		mac->ops.setup_physical_interface =
217 		    e1000_setup_fiber_serdes_link_82571;
218 		mac->ops.check_for_link = e1000_check_for_serdes_link_82571;
219 		mac->ops.get_link_up_info =
220 		    e1000e_get_speed_and_duplex_fiber_serdes;
221 		break;
222 	default:
223 		hw->phy.media_type = e1000_media_type_copper;
224 		mac->ops.setup_physical_interface =
225 		    e1000_setup_copper_link_82571;
226 		mac->ops.check_for_link = e1000e_check_for_copper_link;
227 		mac->ops.get_link_up_info = e1000e_get_speed_and_duplex_copper;
228 		break;
229 	}
230 
231 	/* Set mta register count */
232 	mac->mta_reg_count = 128;
233 	/* Set rar entry count */
234 	mac->rar_entry_count = E1000_RAR_ENTRIES;
235 	/* Adaptive IFS supported */
236 	mac->adaptive_ifs = true;
237 
238 	/* MAC-specific function pointers */
239 	switch (hw->mac.type) {
240 	case e1000_82573:
241 		mac->ops.set_lan_id = e1000_set_lan_id_single_port;
242 		mac->ops.check_mng_mode = e1000e_check_mng_mode_generic;
243 		mac->ops.led_on = e1000e_led_on_generic;
244 		mac->ops.blink_led = e1000e_blink_led_generic;
245 
246 		/* FWSM register */
247 		mac->has_fwsm = true;
248 		/* ARC supported; valid only if manageability features are
249 		 * enabled.
250 		 */
251 		mac->arc_subsystem_valid = !!(er32(FWSM) &
252 					      E1000_FWSM_MODE_MASK);
253 		break;
254 	case e1000_82574:
255 	case e1000_82583:
256 		mac->ops.set_lan_id = e1000_set_lan_id_single_port;
257 		mac->ops.check_mng_mode = e1000_check_mng_mode_82574;
258 		mac->ops.led_on = e1000_led_on_82574;
259 		break;
260 	default:
261 		mac->ops.check_mng_mode = e1000e_check_mng_mode_generic;
262 		mac->ops.led_on = e1000e_led_on_generic;
263 		mac->ops.blink_led = e1000e_blink_led_generic;
264 
265 		/* FWSM register */
266 		mac->has_fwsm = true;
267 		break;
268 	}
269 
270 	/* Ensure that the inter-port SWSM.SMBI lock bit is clear before
271 	 * first NVM or PHY access. This should be done for single-port
272 	 * devices, and for one port only on dual-port devices so that
273 	 * for those devices we can still use the SMBI lock to synchronize
274 	 * inter-port accesses to the PHY & NVM.
275 	 */
276 	switch (hw->mac.type) {
277 	case e1000_82571:
278 	case e1000_82572:
279 		swsm2 = er32(SWSM2);
280 
281 		if (!(swsm2 & E1000_SWSM2_LOCK)) {
282 			/* Only do this for the first interface on this card */
283 			ew32(SWSM2, swsm2 | E1000_SWSM2_LOCK);
284 			force_clear_smbi = true;
285 		} else {
286 			force_clear_smbi = false;
287 		}
288 		break;
289 	default:
290 		force_clear_smbi = true;
291 		break;
292 	}
293 
294 	if (force_clear_smbi) {
295 		/* Make sure SWSM.SMBI is clear */
296 		swsm = er32(SWSM);
297 		if (swsm & E1000_SWSM_SMBI) {
298 			/* This bit should not be set on a first interface, and
299 			 * indicates that the bootagent or EFI code has
300 			 * improperly left this bit enabled
301 			 */
302 			e_dbg("Please update your 82571 Bootagent\n");
303 		}
304 		ew32(SWSM, swsm & ~E1000_SWSM_SMBI);
305 	}
306 
307 	/* Initialize device specific counter of SMBI acquisition timeouts. */
308 	hw->dev_spec.e82571.smb_counter = 0;
309 
310 	return 0;
311 }
312 
e1000_get_variants_82571(struct e1000_adapter * adapter)313 static s32 e1000_get_variants_82571(struct e1000_adapter *adapter)
314 {
315 	struct e1000_hw *hw = &adapter->hw;
316 	static int global_quad_port_a;	/* global port a indication */
317 	struct pci_dev *pdev = adapter->pdev;
318 	int is_port_b = er32(STATUS) & E1000_STATUS_FUNC_1;
319 	s32 rc;
320 
321 	rc = e1000_init_mac_params_82571(hw);
322 	if (rc)
323 		return rc;
324 
325 	rc = e1000_init_nvm_params_82571(hw);
326 	if (rc)
327 		return rc;
328 
329 	rc = e1000_init_phy_params_82571(hw);
330 	if (rc)
331 		return rc;
332 
333 	/* tag quad port adapters first, it's used below */
334 	switch (pdev->device) {
335 	case E1000_DEV_ID_82571EB_QUAD_COPPER:
336 	case E1000_DEV_ID_82571EB_QUAD_FIBER:
337 	case E1000_DEV_ID_82571EB_QUAD_COPPER_LP:
338 	case E1000_DEV_ID_82571PT_QUAD_COPPER:
339 		adapter->flags |= FLAG_IS_QUAD_PORT;
340 		/* mark the first port */
341 		if (global_quad_port_a == 0)
342 			adapter->flags |= FLAG_IS_QUAD_PORT_A;
343 		/* Reset for multiple quad port adapters */
344 		global_quad_port_a++;
345 		if (global_quad_port_a == 4)
346 			global_quad_port_a = 0;
347 		break;
348 	default:
349 		break;
350 	}
351 
352 	switch (adapter->hw.mac.type) {
353 	case e1000_82571:
354 		/* these dual ports don't have WoL on port B at all */
355 		if (((pdev->device == E1000_DEV_ID_82571EB_FIBER) ||
356 		     (pdev->device == E1000_DEV_ID_82571EB_SERDES) ||
357 		     (pdev->device == E1000_DEV_ID_82571EB_COPPER)) &&
358 		    (is_port_b))
359 			adapter->flags &= ~FLAG_HAS_WOL;
360 		/* quad ports only support WoL on port A */
361 		if (adapter->flags & FLAG_IS_QUAD_PORT &&
362 		    (!(adapter->flags & FLAG_IS_QUAD_PORT_A)))
363 			adapter->flags &= ~FLAG_HAS_WOL;
364 		/* Does not support WoL on any port */
365 		if (pdev->device == E1000_DEV_ID_82571EB_SERDES_QUAD)
366 			adapter->flags &= ~FLAG_HAS_WOL;
367 		break;
368 	case e1000_82573:
369 		if (pdev->device == E1000_DEV_ID_82573L) {
370 			adapter->flags |= FLAG_HAS_JUMBO_FRAMES;
371 			adapter->max_hw_frame_size = DEFAULT_JUMBO;
372 		}
373 		break;
374 	default:
375 		break;
376 	}
377 
378 	return 0;
379 }
380 
381 /**
382  *  e1000_get_phy_id_82571 - Retrieve the PHY ID and revision
383  *  @hw: pointer to the HW structure
384  *
385  *  Reads the PHY registers and stores the PHY ID and possibly the PHY
386  *  revision in the hardware structure.
387  **/
e1000_get_phy_id_82571(struct e1000_hw * hw)388 static s32 e1000_get_phy_id_82571(struct e1000_hw *hw)
389 {
390 	struct e1000_phy_info *phy = &hw->phy;
391 	s32 ret_val;
392 	u16 phy_id = 0;
393 
394 	switch (hw->mac.type) {
395 	case e1000_82571:
396 	case e1000_82572:
397 		/* The 82571 firmware may still be configuring the PHY.
398 		 * In this case, we cannot access the PHY until the
399 		 * configuration is done.  So we explicitly set the
400 		 * PHY ID.
401 		 */
402 		phy->id = IGP01E1000_I_PHY_ID;
403 		break;
404 	case e1000_82573:
405 		return e1000e_get_phy_id(hw);
406 	case e1000_82574:
407 	case e1000_82583:
408 		ret_val = e1e_rphy(hw, MII_PHYSID1, &phy_id);
409 		if (ret_val)
410 			return ret_val;
411 
412 		phy->id = (u32)(phy_id << 16);
413 		usleep_range(20, 40);
414 		ret_val = e1e_rphy(hw, MII_PHYSID2, &phy_id);
415 		if (ret_val)
416 			return ret_val;
417 
418 		phy->id |= (u32)(phy_id);
419 		phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
420 		break;
421 	default:
422 		return -E1000_ERR_PHY;
423 	}
424 
425 	return 0;
426 }
427 
428 /**
429  *  e1000_get_hw_semaphore_82571 - Acquire hardware semaphore
430  *  @hw: pointer to the HW structure
431  *
432  *  Acquire the HW semaphore to access the PHY or NVM
433  **/
e1000_get_hw_semaphore_82571(struct e1000_hw * hw)434 static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw)
435 {
436 	u32 swsm;
437 	s32 sw_timeout = hw->nvm.word_size + 1;
438 	s32 fw_timeout = hw->nvm.word_size + 1;
439 	s32 i = 0;
440 
441 	/* If we have timedout 3 times on trying to acquire
442 	 * the inter-port SMBI semaphore, there is old code
443 	 * operating on the other port, and it is not
444 	 * releasing SMBI. Modify the number of times that
445 	 * we try for the semaphore to interwork with this
446 	 * older code.
447 	 */
448 	if (hw->dev_spec.e82571.smb_counter > 2)
449 		sw_timeout = 1;
450 
451 	/* Get the SW semaphore */
452 	while (i < sw_timeout) {
453 		swsm = er32(SWSM);
454 		if (!(swsm & E1000_SWSM_SMBI))
455 			break;
456 
457 		usleep_range(50, 100);
458 		i++;
459 	}
460 
461 	if (i == sw_timeout) {
462 		e_dbg("Driver can't access device - SMBI bit is set.\n");
463 		hw->dev_spec.e82571.smb_counter++;
464 	}
465 	/* Get the FW semaphore. */
466 	for (i = 0; i < fw_timeout; i++) {
467 		swsm = er32(SWSM);
468 		ew32(SWSM, swsm | E1000_SWSM_SWESMBI);
469 
470 		/* Semaphore acquired if bit latched */
471 		if (er32(SWSM) & E1000_SWSM_SWESMBI)
472 			break;
473 
474 		usleep_range(50, 100);
475 	}
476 
477 	if (i == fw_timeout) {
478 		/* Release semaphores */
479 		e1000_put_hw_semaphore_82571(hw);
480 		e_dbg("Driver can't access the NVM\n");
481 		return -E1000_ERR_NVM;
482 	}
483 
484 	return 0;
485 }
486 
487 /**
488  *  e1000_put_hw_semaphore_82571 - Release hardware semaphore
489  *  @hw: pointer to the HW structure
490  *
491  *  Release hardware semaphore used to access the PHY or NVM
492  **/
e1000_put_hw_semaphore_82571(struct e1000_hw * hw)493 static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)
494 {
495 	u32 swsm;
496 
497 	swsm = er32(SWSM);
498 	swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
499 	ew32(SWSM, swsm);
500 }
501 
502 /**
503  *  e1000_get_hw_semaphore_82573 - Acquire hardware semaphore
504  *  @hw: pointer to the HW structure
505  *
506  *  Acquire the HW semaphore during reset.
507  *
508  **/
e1000_get_hw_semaphore_82573(struct e1000_hw * hw)509 static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
510 {
511 	u32 extcnf_ctrl;
512 	s32 i = 0;
513 
514 	extcnf_ctrl = er32(EXTCNF_CTRL);
515 	do {
516 		extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
517 		ew32(EXTCNF_CTRL, extcnf_ctrl);
518 		extcnf_ctrl = er32(EXTCNF_CTRL);
519 
520 		if (extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP)
521 			break;
522 
523 		usleep_range(2000, 4000);
524 		i++;
525 	} while (i < MDIO_OWNERSHIP_TIMEOUT);
526 
527 	if (i == MDIO_OWNERSHIP_TIMEOUT) {
528 		/* Release semaphores */
529 		e1000_put_hw_semaphore_82573(hw);
530 		e_dbg("Driver can't access the PHY\n");
531 		return -E1000_ERR_PHY;
532 	}
533 
534 	return 0;
535 }
536 
537 /**
538  *  e1000_put_hw_semaphore_82573 - Release hardware semaphore
539  *  @hw: pointer to the HW structure
540  *
541  *  Release hardware semaphore used during reset.
542  *
543  **/
e1000_put_hw_semaphore_82573(struct e1000_hw * hw)544 static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw)
545 {
546 	u32 extcnf_ctrl;
547 
548 	extcnf_ctrl = er32(EXTCNF_CTRL);
549 	extcnf_ctrl &= ~E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
550 	ew32(EXTCNF_CTRL, extcnf_ctrl);
551 }
552 
553 static DEFINE_MUTEX(swflag_mutex);
554 
555 /**
556  *  e1000_get_hw_semaphore_82574 - Acquire hardware semaphore
557  *  @hw: pointer to the HW structure
558  *
559  *  Acquire the HW semaphore to access the PHY or NVM.
560  *
561  **/
e1000_get_hw_semaphore_82574(struct e1000_hw * hw)562 static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw)
563 {
564 	s32 ret_val;
565 
566 	mutex_lock(&swflag_mutex);
567 	ret_val = e1000_get_hw_semaphore_82573(hw);
568 	if (ret_val)
569 		mutex_unlock(&swflag_mutex);
570 	return ret_val;
571 }
572 
573 /**
574  *  e1000_put_hw_semaphore_82574 - Release hardware semaphore
575  *  @hw: pointer to the HW structure
576  *
577  *  Release hardware semaphore used to access the PHY or NVM
578  *
579  **/
e1000_put_hw_semaphore_82574(struct e1000_hw * hw)580 static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw)
581 {
582 	e1000_put_hw_semaphore_82573(hw);
583 	mutex_unlock(&swflag_mutex);
584 }
585 
586 /**
587  *  e1000_set_d0_lplu_state_82574 - Set Low Power Linkup D0 state
588  *  @hw: pointer to the HW structure
589  *  @active: true to enable LPLU, false to disable
590  *
591  *  Sets the LPLU D0 state according to the active flag.
592  *  LPLU will not be activated unless the
593  *  device autonegotiation advertisement meets standards of
594  *  either 10 or 10/100 or 10/100/1000 at all duplexes.
595  *  This is a function pointer entry point only called by
596  *  PHY setup routines.
597  **/
e1000_set_d0_lplu_state_82574(struct e1000_hw * hw,bool active)598 static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active)
599 {
600 	u32 data = er32(POEMB);
601 
602 	if (active)
603 		data |= E1000_PHY_CTRL_D0A_LPLU;
604 	else
605 		data &= ~E1000_PHY_CTRL_D0A_LPLU;
606 
607 	ew32(POEMB, data);
608 	return 0;
609 }
610 
611 /**
612  *  e1000_set_d3_lplu_state_82574 - Sets low power link up state for D3
613  *  @hw: pointer to the HW structure
614  *  @active: boolean used to enable/disable lplu
615  *
616  *  The low power link up (lplu) state is set to the power management level D3
617  *  when active is true, else clear lplu for D3. LPLU
618  *  is used during Dx states where the power conservation is most important.
619  *  During driver activity, SmartSpeed should be enabled so performance is
620  *  maintained.
621  **/
e1000_set_d3_lplu_state_82574(struct e1000_hw * hw,bool active)622 static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active)
623 {
624 	u32 data = er32(POEMB);
625 
626 	if (!active) {
627 		data &= ~E1000_PHY_CTRL_NOND0A_LPLU;
628 	} else if ((hw->phy.autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
629 		   (hw->phy.autoneg_advertised == E1000_ALL_NOT_GIG) ||
630 		   (hw->phy.autoneg_advertised == E1000_ALL_10_SPEED)) {
631 		data |= E1000_PHY_CTRL_NOND0A_LPLU;
632 	}
633 
634 	ew32(POEMB, data);
635 	return 0;
636 }
637 
638 /**
639  *  e1000_acquire_nvm_82571 - Request for access to the EEPROM
640  *  @hw: pointer to the HW structure
641  *
642  *  To gain access to the EEPROM, first we must obtain a hardware semaphore.
643  *  Then for non-82573 hardware, set the EEPROM access request bit and wait
644  *  for EEPROM access grant bit.  If the access grant bit is not set, release
645  *  hardware semaphore.
646  **/
e1000_acquire_nvm_82571(struct e1000_hw * hw)647 static s32 e1000_acquire_nvm_82571(struct e1000_hw *hw)
648 {
649 	s32 ret_val;
650 
651 	ret_val = e1000_get_hw_semaphore_82571(hw);
652 	if (ret_val)
653 		return ret_val;
654 
655 	switch (hw->mac.type) {
656 	case e1000_82573:
657 		break;
658 	default:
659 		ret_val = e1000e_acquire_nvm(hw);
660 		break;
661 	}
662 
663 	if (ret_val)
664 		e1000_put_hw_semaphore_82571(hw);
665 
666 	return ret_val;
667 }
668 
669 /**
670  *  e1000_release_nvm_82571 - Release exclusive access to EEPROM
671  *  @hw: pointer to the HW structure
672  *
673  *  Stop any current commands to the EEPROM and clear the EEPROM request bit.
674  **/
e1000_release_nvm_82571(struct e1000_hw * hw)675 static void e1000_release_nvm_82571(struct e1000_hw *hw)
676 {
677 	e1000e_release_nvm(hw);
678 	e1000_put_hw_semaphore_82571(hw);
679 }
680 
681 /**
682  *  e1000_write_nvm_82571 - Write to EEPROM using appropriate interface
683  *  @hw: pointer to the HW structure
684  *  @offset: offset within the EEPROM to be written to
685  *  @words: number of words to write
686  *  @data: 16 bit word(s) to be written to the EEPROM
687  *
688  *  For non-82573 silicon, write data to EEPROM at offset using SPI interface.
689  *
690  *  If e1000e_update_nvm_checksum is not called after this function, the
691  *  EEPROM will most likely contain an invalid checksum.
692  **/
e1000_write_nvm_82571(struct e1000_hw * hw,u16 offset,u16 words,u16 * data)693 static s32 e1000_write_nvm_82571(struct e1000_hw *hw, u16 offset, u16 words,
694 				 u16 *data)
695 {
696 	s32 ret_val;
697 
698 	switch (hw->mac.type) {
699 	case e1000_82573:
700 	case e1000_82574:
701 	case e1000_82583:
702 		ret_val = e1000_write_nvm_eewr_82571(hw, offset, words, data);
703 		break;
704 	case e1000_82571:
705 	case e1000_82572:
706 		ret_val = e1000e_write_nvm_spi(hw, offset, words, data);
707 		break;
708 	default:
709 		ret_val = -E1000_ERR_NVM;
710 		break;
711 	}
712 
713 	return ret_val;
714 }
715 
716 /**
717  *  e1000_update_nvm_checksum_82571 - Update EEPROM checksum
718  *  @hw: pointer to the HW structure
719  *
720  *  Updates the EEPROM checksum by reading/adding each word of the EEPROM
721  *  up to the checksum.  Then calculates the EEPROM checksum and writes the
722  *  value to the EEPROM.
723  **/
e1000_update_nvm_checksum_82571(struct e1000_hw * hw)724 static s32 e1000_update_nvm_checksum_82571(struct e1000_hw *hw)
725 {
726 	u32 eecd;
727 	s32 ret_val;
728 	u16 i;
729 
730 	ret_val = e1000e_update_nvm_checksum_generic(hw);
731 	if (ret_val)
732 		return ret_val;
733 
734 	/* If our nvm is an EEPROM, then we're done
735 	 * otherwise, commit the checksum to the flash NVM.
736 	 */
737 	if (hw->nvm.type != e1000_nvm_flash_hw)
738 		return 0;
739 
740 	/* Check for pending operations. */
741 	for (i = 0; i < E1000_FLASH_UPDATES; i++) {
742 		usleep_range(1000, 2000);
743 		if (!(er32(EECD) & E1000_EECD_FLUPD))
744 			break;
745 	}
746 
747 	if (i == E1000_FLASH_UPDATES)
748 		return -E1000_ERR_NVM;
749 
750 	/* Reset the firmware if using STM opcode. */
751 	if ((er32(FLOP) & 0xFF00) == E1000_STM_OPCODE) {
752 		/* The enabling of and the actual reset must be done
753 		 * in two write cycles.
754 		 */
755 		ew32(HICR, E1000_HICR_FW_RESET_ENABLE);
756 		e1e_flush();
757 		ew32(HICR, E1000_HICR_FW_RESET);
758 	}
759 
760 	/* Commit the write to flash */
761 	eecd = er32(EECD) | E1000_EECD_FLUPD;
762 	ew32(EECD, eecd);
763 
764 	for (i = 0; i < E1000_FLASH_UPDATES; i++) {
765 		usleep_range(1000, 2000);
766 		if (!(er32(EECD) & E1000_EECD_FLUPD))
767 			break;
768 	}
769 
770 	if (i == E1000_FLASH_UPDATES)
771 		return -E1000_ERR_NVM;
772 
773 	return 0;
774 }
775 
776 /**
777  *  e1000_validate_nvm_checksum_82571 - Validate EEPROM checksum
778  *  @hw: pointer to the HW structure
779  *
780  *  Calculates the EEPROM checksum by reading/adding each word of the EEPROM
781  *  and then verifies that the sum of the EEPROM is equal to 0xBABA.
782  **/
e1000_validate_nvm_checksum_82571(struct e1000_hw * hw)783 static s32 e1000_validate_nvm_checksum_82571(struct e1000_hw *hw)
784 {
785 	if (hw->nvm.type == e1000_nvm_flash_hw)
786 		e1000_fix_nvm_checksum_82571(hw);
787 
788 	return e1000e_validate_nvm_checksum_generic(hw);
789 }
790 
791 /**
792  *  e1000_write_nvm_eewr_82571 - Write to EEPROM for 82573 silicon
793  *  @hw: pointer to the HW structure
794  *  @offset: offset within the EEPROM to be written to
795  *  @words: number of words to write
796  *  @data: 16 bit word(s) to be written to the EEPROM
797  *
798  *  After checking for invalid values, poll the EEPROM to ensure the previous
799  *  command has completed before trying to write the next word.  After write
800  *  poll for completion.
801  *
802  *  If e1000e_update_nvm_checksum is not called after this function, the
803  *  EEPROM will most likely contain an invalid checksum.
804  **/
e1000_write_nvm_eewr_82571(struct e1000_hw * hw,u16 offset,u16 words,u16 * data)805 static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
806 				      u16 words, u16 *data)
807 {
808 	struct e1000_nvm_info *nvm = &hw->nvm;
809 	u32 i, eewr = 0;
810 	s32 ret_val = 0;
811 
812 	/* A check for invalid values:  offset too large, too many words,
813 	 * and not enough words.
814 	 */
815 	if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
816 	    (words == 0)) {
817 		e_dbg("nvm parameter(s) out of bounds\n");
818 		return -E1000_ERR_NVM;
819 	}
820 
821 	for (i = 0; i < words; i++) {
822 		eewr = ((data[i] << E1000_NVM_RW_REG_DATA) |
823 			((offset + i) << E1000_NVM_RW_ADDR_SHIFT) |
824 			E1000_NVM_RW_REG_START);
825 
826 		ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
827 		if (ret_val)
828 			break;
829 
830 		ew32(EEWR, eewr);
831 
832 		ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
833 		if (ret_val)
834 			break;
835 	}
836 
837 	return ret_val;
838 }
839 
840 /**
841  *  e1000_get_cfg_done_82571 - Poll for configuration done
842  *  @hw: pointer to the HW structure
843  *
844  *  Reads the management control register for the config done bit to be set.
845  **/
e1000_get_cfg_done_82571(struct e1000_hw * hw)846 static s32 e1000_get_cfg_done_82571(struct e1000_hw *hw)
847 {
848 	s32 timeout = PHY_CFG_TIMEOUT;
849 
850 	while (timeout) {
851 		if (er32(EEMNGCTL) & E1000_NVM_CFG_DONE_PORT_0)
852 			break;
853 		usleep_range(1000, 2000);
854 		timeout--;
855 	}
856 	if (!timeout) {
857 		e_dbg("MNG configuration cycle has not completed.\n");
858 		return -E1000_ERR_RESET;
859 	}
860 
861 	return 0;
862 }
863 
864 /**
865  *  e1000_set_d0_lplu_state_82571 - Set Low Power Linkup D0 state
866  *  @hw: pointer to the HW structure
867  *  @active: true to enable LPLU, false to disable
868  *
869  *  Sets the LPLU D0 state according to the active flag.  When activating LPLU
870  *  this function also disables smart speed and vice versa.  LPLU will not be
871  *  activated unless the device autonegotiation advertisement meets standards
872  *  of either 10 or 10/100 or 10/100/1000 at all duplexes.  This is a function
873  *  pointer entry point only called by PHY setup routines.
874  **/
e1000_set_d0_lplu_state_82571(struct e1000_hw * hw,bool active)875 static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active)
876 {
877 	struct e1000_phy_info *phy = &hw->phy;
878 	s32 ret_val;
879 	u16 data;
880 
881 	ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
882 	if (ret_val)
883 		return ret_val;
884 
885 	if (active) {
886 		data |= IGP02E1000_PM_D0_LPLU;
887 		ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
888 		if (ret_val)
889 			return ret_val;
890 
891 		/* When LPLU is enabled, we should disable SmartSpeed */
892 		ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
893 		if (ret_val)
894 			return ret_val;
895 		data &= ~IGP01E1000_PSCFR_SMART_SPEED;
896 		ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
897 		if (ret_val)
898 			return ret_val;
899 	} else {
900 		data &= ~IGP02E1000_PM_D0_LPLU;
901 		ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
902 		if (ret_val)
903 			return ret_val;
904 		/* LPLU and SmartSpeed are mutually exclusive.  LPLU is used
905 		 * during Dx states where the power conservation is most
906 		 * important.  During driver activity we should enable
907 		 * SmartSpeed, so performance is maintained.
908 		 */
909 		if (phy->smart_speed == e1000_smart_speed_on) {
910 			ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
911 					   &data);
912 			if (ret_val)
913 				return ret_val;
914 
915 			data |= IGP01E1000_PSCFR_SMART_SPEED;
916 			ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
917 					   data);
918 			if (ret_val)
919 				return ret_val;
920 		} else if (phy->smart_speed == e1000_smart_speed_off) {
921 			ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
922 					   &data);
923 			if (ret_val)
924 				return ret_val;
925 
926 			data &= ~IGP01E1000_PSCFR_SMART_SPEED;
927 			ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
928 					   data);
929 			if (ret_val)
930 				return ret_val;
931 		}
932 	}
933 
934 	return 0;
935 }
936 
937 /**
938  *  e1000_reset_hw_82571 - Reset hardware
939  *  @hw: pointer to the HW structure
940  *
941  *  This resets the hardware into a known state.
942  **/
e1000_reset_hw_82571(struct e1000_hw * hw)943 static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
944 {
945 	u32 ctrl, ctrl_ext, eecd, tctl;
946 	s32 ret_val;
947 
948 	/* Prevent the PCI-E bus from sticking if there is no TLP connection
949 	 * on the last TLP read/write transaction when MAC is reset.
950 	 */
951 	ret_val = e1000e_disable_pcie_master(hw);
952 	if (ret_val)
953 		e_dbg("PCI-E Master disable polling has failed.\n");
954 
955 	e_dbg("Masking off all interrupts\n");
956 	ew32(IMC, 0xffffffff);
957 
958 	ew32(RCTL, 0);
959 	tctl = er32(TCTL);
960 	tctl &= ~E1000_TCTL_EN;
961 	ew32(TCTL, tctl);
962 	e1e_flush();
963 
964 	usleep_range(10000, 11000);
965 
966 	/* Must acquire the MDIO ownership before MAC reset.
967 	 * Ownership defaults to firmware after a reset.
968 	 */
969 	switch (hw->mac.type) {
970 	case e1000_82573:
971 		ret_val = e1000_get_hw_semaphore_82573(hw);
972 		break;
973 	case e1000_82574:
974 	case e1000_82583:
975 		ret_val = e1000_get_hw_semaphore_82574(hw);
976 		break;
977 	default:
978 		break;
979 	}
980 
981 	ctrl = er32(CTRL);
982 
983 	e_dbg("Issuing a global reset to MAC\n");
984 	ew32(CTRL, ctrl | E1000_CTRL_RST);
985 
986 	/* Must release MDIO ownership and mutex after MAC reset. */
987 	switch (hw->mac.type) {
988 	case e1000_82573:
989 		/* Release mutex only if the hw semaphore is acquired */
990 		if (!ret_val)
991 			e1000_put_hw_semaphore_82573(hw);
992 		break;
993 	case e1000_82574:
994 	case e1000_82583:
995 		/* Release mutex only if the hw semaphore is acquired */
996 		if (!ret_val)
997 			e1000_put_hw_semaphore_82574(hw);
998 		break;
999 	default:
1000 		break;
1001 	}
1002 
1003 	if (hw->nvm.type == e1000_nvm_flash_hw) {
1004 		usleep_range(10, 20);
1005 		ctrl_ext = er32(CTRL_EXT);
1006 		ctrl_ext |= E1000_CTRL_EXT_EE_RST;
1007 		ew32(CTRL_EXT, ctrl_ext);
1008 		e1e_flush();
1009 	}
1010 
1011 	ret_val = e1000e_get_auto_rd_done(hw);
1012 	if (ret_val)
1013 		/* We don't want to continue accessing MAC registers. */
1014 		return ret_val;
1015 
1016 	/* Phy configuration from NVM just starts after EECD_AUTO_RD is set.
1017 	 * Need to wait for Phy configuration completion before accessing
1018 	 * NVM and Phy.
1019 	 */
1020 
1021 	switch (hw->mac.type) {
1022 	case e1000_82571:
1023 	case e1000_82572:
1024 		/* REQ and GNT bits need to be cleared when using AUTO_RD
1025 		 * to access the EEPROM.
1026 		 */
1027 		eecd = er32(EECD);
1028 		eecd &= ~(E1000_EECD_REQ | E1000_EECD_GNT);
1029 		ew32(EECD, eecd);
1030 		break;
1031 	case e1000_82573:
1032 	case e1000_82574:
1033 	case e1000_82583:
1034 		msleep(25);
1035 		break;
1036 	default:
1037 		break;
1038 	}
1039 
1040 	/* Clear any pending interrupt events. */
1041 	ew32(IMC, 0xffffffff);
1042 	er32(ICR);
1043 
1044 	if (hw->mac.type == e1000_82571) {
1045 		/* Install any alternate MAC address into RAR0 */
1046 		ret_val = e1000_check_alt_mac_addr_generic(hw);
1047 		if (ret_val)
1048 			return ret_val;
1049 
1050 		e1000e_set_laa_state_82571(hw, true);
1051 	}
1052 
1053 	/* Reinitialize the 82571 serdes link state machine */
1054 	if (hw->phy.media_type == e1000_media_type_internal_serdes)
1055 		hw->mac.serdes_link_state = e1000_serdes_link_down;
1056 
1057 	return 0;
1058 }
1059 
1060 /**
1061  *  e1000_init_hw_82571 - Initialize hardware
1062  *  @hw: pointer to the HW structure
1063  *
1064  *  This inits the hardware readying it for operation.
1065  **/
e1000_init_hw_82571(struct e1000_hw * hw)1066 static s32 e1000_init_hw_82571(struct e1000_hw *hw)
1067 {
1068 	struct e1000_mac_info *mac = &hw->mac;
1069 	u32 reg_data;
1070 	s32 ret_val;
1071 	u16 i, rar_count = mac->rar_entry_count;
1072 
1073 	e1000_initialize_hw_bits_82571(hw);
1074 
1075 	/* Initialize identification LED */
1076 	ret_val = mac->ops.id_led_init(hw);
1077 	/* An error is not fatal and we should not stop init due to this */
1078 	if (ret_val)
1079 		e_dbg("Error initializing identification LED\n");
1080 
1081 	/* Disabling VLAN filtering */
1082 	e_dbg("Initializing the IEEE VLAN\n");
1083 	mac->ops.clear_vfta(hw);
1084 
1085 	/* Setup the receive address.
1086 	 * If, however, a locally administered address was assigned to the
1087 	 * 82571, we must reserve a RAR for it to work around an issue where
1088 	 * resetting one port will reload the MAC on the other port.
1089 	 */
1090 	if (e1000e_get_laa_state_82571(hw))
1091 		rar_count--;
1092 	e1000e_init_rx_addrs(hw, rar_count);
1093 
1094 	/* Zero out the Multicast HASH table */
1095 	e_dbg("Zeroing the MTA\n");
1096 	for (i = 0; i < mac->mta_reg_count; i++)
1097 		E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
1098 
1099 	/* Setup link and flow control */
1100 	ret_val = mac->ops.setup_link(hw);
1101 
1102 	/* Set the transmit descriptor write-back policy */
1103 	reg_data = er32(TXDCTL(0));
1104 	reg_data = ((reg_data & ~E1000_TXDCTL_WTHRESH) |
1105 		    E1000_TXDCTL_FULL_TX_DESC_WB | E1000_TXDCTL_COUNT_DESC);
1106 	ew32(TXDCTL(0), reg_data);
1107 
1108 	/* ...for both queues. */
1109 	switch (mac->type) {
1110 	case e1000_82573:
1111 		e1000e_enable_tx_pkt_filtering(hw);
1112 		fallthrough;
1113 	case e1000_82574:
1114 	case e1000_82583:
1115 		reg_data = er32(GCR);
1116 		reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
1117 		ew32(GCR, reg_data);
1118 		break;
1119 	default:
1120 		reg_data = er32(TXDCTL(1));
1121 		reg_data = ((reg_data & ~E1000_TXDCTL_WTHRESH) |
1122 			    E1000_TXDCTL_FULL_TX_DESC_WB |
1123 			    E1000_TXDCTL_COUNT_DESC);
1124 		ew32(TXDCTL(1), reg_data);
1125 		break;
1126 	}
1127 
1128 	/* Clear all of the statistics registers (clear on read).  It is
1129 	 * important that we do this after we have tried to establish link
1130 	 * because the symbol error count will increment wildly if there
1131 	 * is no link.
1132 	 */
1133 	e1000_clear_hw_cntrs_82571(hw);
1134 
1135 	return ret_val;
1136 }
1137 
1138 /**
1139  *  e1000_initialize_hw_bits_82571 - Initialize hardware-dependent bits
1140  *  @hw: pointer to the HW structure
1141  *
1142  *  Initializes required hardware-dependent bits needed for normal operation.
1143  **/
e1000_initialize_hw_bits_82571(struct e1000_hw * hw)1144 static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw)
1145 {
1146 	u32 reg;
1147 
1148 	/* Transmit Descriptor Control 0 */
1149 	reg = er32(TXDCTL(0));
1150 	reg |= BIT(22);
1151 	ew32(TXDCTL(0), reg);
1152 
1153 	/* Transmit Descriptor Control 1 */
1154 	reg = er32(TXDCTL(1));
1155 	reg |= BIT(22);
1156 	ew32(TXDCTL(1), reg);
1157 
1158 	/* Transmit Arbitration Control 0 */
1159 	reg = er32(TARC(0));
1160 	reg &= ~(0xF << 27);	/* 30:27 */
1161 	switch (hw->mac.type) {
1162 	case e1000_82571:
1163 	case e1000_82572:
1164 		reg |= BIT(23) | BIT(24) | BIT(25) | BIT(26);
1165 		break;
1166 	case e1000_82574:
1167 	case e1000_82583:
1168 		reg |= BIT(26);
1169 		break;
1170 	default:
1171 		break;
1172 	}
1173 	ew32(TARC(0), reg);
1174 
1175 	/* Transmit Arbitration Control 1 */
1176 	reg = er32(TARC(1));
1177 	switch (hw->mac.type) {
1178 	case e1000_82571:
1179 	case e1000_82572:
1180 		reg &= ~(BIT(29) | BIT(30));
1181 		reg |= BIT(22) | BIT(24) | BIT(25) | BIT(26);
1182 		if (er32(TCTL) & E1000_TCTL_MULR)
1183 			reg &= ~BIT(28);
1184 		else
1185 			reg |= BIT(28);
1186 		ew32(TARC(1), reg);
1187 		break;
1188 	default:
1189 		break;
1190 	}
1191 
1192 	/* Device Control */
1193 	switch (hw->mac.type) {
1194 	case e1000_82573:
1195 	case e1000_82574:
1196 	case e1000_82583:
1197 		reg = er32(CTRL);
1198 		reg &= ~BIT(29);
1199 		ew32(CTRL, reg);
1200 		break;
1201 	default:
1202 		break;
1203 	}
1204 
1205 	/* Extended Device Control */
1206 	switch (hw->mac.type) {
1207 	case e1000_82573:
1208 	case e1000_82574:
1209 	case e1000_82583:
1210 		reg = er32(CTRL_EXT);
1211 		reg &= ~BIT(23);
1212 		reg |= BIT(22);
1213 		ew32(CTRL_EXT, reg);
1214 		break;
1215 	default:
1216 		break;
1217 	}
1218 
1219 	if (hw->mac.type == e1000_82571) {
1220 		reg = er32(PBA_ECC);
1221 		reg |= E1000_PBA_ECC_CORR_EN;
1222 		ew32(PBA_ECC, reg);
1223 	}
1224 
1225 	/* Workaround for hardware errata.
1226 	 * Ensure that DMA Dynamic Clock gating is disabled on 82571 and 82572
1227 	 */
1228 	if ((hw->mac.type == e1000_82571) || (hw->mac.type == e1000_82572)) {
1229 		reg = er32(CTRL_EXT);
1230 		reg &= ~E1000_CTRL_EXT_DMA_DYN_CLK_EN;
1231 		ew32(CTRL_EXT, reg);
1232 	}
1233 
1234 	/* Disable IPv6 extension header parsing because some malformed
1235 	 * IPv6 headers can hang the Rx.
1236 	 */
1237 	if (hw->mac.type <= e1000_82573) {
1238 		reg = er32(RFCTL);
1239 		reg |= (E1000_RFCTL_IPV6_EX_DIS | E1000_RFCTL_NEW_IPV6_EXT_DIS);
1240 		ew32(RFCTL, reg);
1241 	}
1242 
1243 	/* PCI-Ex Control Registers */
1244 	switch (hw->mac.type) {
1245 	case e1000_82574:
1246 	case e1000_82583:
1247 		reg = er32(GCR);
1248 		reg |= BIT(22);
1249 		ew32(GCR, reg);
1250 
1251 		/* Workaround for hardware errata.
1252 		 * apply workaround for hardware errata documented in errata
1253 		 * docs Fixes issue where some error prone or unreliable PCIe
1254 		 * completions are occurring, particularly with ASPM enabled.
1255 		 * Without fix, issue can cause Tx timeouts.
1256 		 */
1257 		reg = er32(GCR2);
1258 		reg |= 1;
1259 		ew32(GCR2, reg);
1260 		break;
1261 	default:
1262 		break;
1263 	}
1264 }
1265 
1266 /**
1267  *  e1000_clear_vfta_82571 - Clear VLAN filter table
1268  *  @hw: pointer to the HW structure
1269  *
1270  *  Clears the register array which contains the VLAN filter table by
1271  *  setting all the values to 0.
1272  **/
e1000_clear_vfta_82571(struct e1000_hw * hw)1273 static void e1000_clear_vfta_82571(struct e1000_hw *hw)
1274 {
1275 	u32 offset;
1276 	u32 vfta_value = 0;
1277 	u32 vfta_offset = 0;
1278 	u32 vfta_bit_in_reg = 0;
1279 
1280 	switch (hw->mac.type) {
1281 	case e1000_82573:
1282 	case e1000_82574:
1283 	case e1000_82583:
1284 		if (hw->mng_cookie.vlan_id != 0) {
1285 			/* The VFTA is a 4096b bit-field, each identifying
1286 			 * a single VLAN ID.  The following operations
1287 			 * determine which 32b entry (i.e. offset) into the
1288 			 * array we want to set the VLAN ID (i.e. bit) of
1289 			 * the manageability unit.
1290 			 */
1291 			vfta_offset = (hw->mng_cookie.vlan_id >>
1292 				       E1000_VFTA_ENTRY_SHIFT) &
1293 			    E1000_VFTA_ENTRY_MASK;
1294 			vfta_bit_in_reg =
1295 			    BIT(hw->mng_cookie.vlan_id &
1296 				E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
1297 		}
1298 		break;
1299 	default:
1300 		break;
1301 	}
1302 	for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
1303 		/* If the offset we want to clear is the same offset of the
1304 		 * manageability VLAN ID, then clear all bits except that of
1305 		 * the manageability unit.
1306 		 */
1307 		vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
1308 		E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, vfta_value);
1309 		e1e_flush();
1310 	}
1311 }
1312 
1313 /**
1314  *  e1000_check_mng_mode_82574 - Check manageability is enabled
1315  *  @hw: pointer to the HW structure
1316  *
1317  *  Reads the NVM Initialization Control Word 2 and returns true
1318  *  (>0) if any manageability is enabled, else false (0).
1319  **/
e1000_check_mng_mode_82574(struct e1000_hw * hw)1320 static bool e1000_check_mng_mode_82574(struct e1000_hw *hw)
1321 {
1322 	u16 data;
1323 
1324 	e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &data);
1325 	return (data & E1000_NVM_INIT_CTRL2_MNGM) != 0;
1326 }
1327 
1328 /**
1329  *  e1000_led_on_82574 - Turn LED on
1330  *  @hw: pointer to the HW structure
1331  *
1332  *  Turn LED on.
1333  **/
e1000_led_on_82574(struct e1000_hw * hw)1334 static s32 e1000_led_on_82574(struct e1000_hw *hw)
1335 {
1336 	u32 ctrl;
1337 	u32 i;
1338 
1339 	ctrl = hw->mac.ledctl_mode2;
1340 	if (!(E1000_STATUS_LU & er32(STATUS))) {
1341 		/* If no link, then turn LED on by setting the invert bit
1342 		 * for each LED that's "on" (0x0E) in ledctl_mode2.
1343 		 */
1344 		for (i = 0; i < 4; i++)
1345 			if (((hw->mac.ledctl_mode2 >> (i * 8)) & 0xFF) ==
1346 			    E1000_LEDCTL_MODE_LED_ON)
1347 				ctrl |= (E1000_LEDCTL_LED0_IVRT << (i * 8));
1348 	}
1349 	ew32(LEDCTL, ctrl);
1350 
1351 	return 0;
1352 }
1353 
1354 /**
1355  *  e1000_check_phy_82574 - check 82574 phy hung state
1356  *  @hw: pointer to the HW structure
1357  *
1358  *  Returns whether phy is hung or not
1359  **/
e1000_check_phy_82574(struct e1000_hw * hw)1360 bool e1000_check_phy_82574(struct e1000_hw *hw)
1361 {
1362 	u16 status_1kbt = 0;
1363 	u16 receive_errors = 0;
1364 	s32 ret_val;
1365 
1366 	/* Read PHY Receive Error counter first, if its is max - all F's then
1367 	 * read the Base1000T status register If both are max then PHY is hung.
1368 	 */
1369 	ret_val = e1e_rphy(hw, E1000_RECEIVE_ERROR_COUNTER, &receive_errors);
1370 	if (ret_val)
1371 		return false;
1372 	if (receive_errors == E1000_RECEIVE_ERROR_MAX) {
1373 		ret_val = e1e_rphy(hw, E1000_BASE1000T_STATUS, &status_1kbt);
1374 		if (ret_val)
1375 			return false;
1376 		if ((status_1kbt & E1000_IDLE_ERROR_COUNT_MASK) ==
1377 		    E1000_IDLE_ERROR_COUNT_MASK)
1378 			return true;
1379 	}
1380 
1381 	return false;
1382 }
1383 
1384 /**
1385  *  e1000_setup_link_82571 - Setup flow control and link settings
1386  *  @hw: pointer to the HW structure
1387  *
1388  *  Determines which flow control settings to use, then configures flow
1389  *  control.  Calls the appropriate media-specific link configuration
1390  *  function.  Assuming the adapter has a valid link partner, a valid link
1391  *  should be established.  Assumes the hardware has previously been reset
1392  *  and the transmitter and receiver are not enabled.
1393  **/
e1000_setup_link_82571(struct e1000_hw * hw)1394 static s32 e1000_setup_link_82571(struct e1000_hw *hw)
1395 {
1396 	/* 82573 does not have a word in the NVM to determine
1397 	 * the default flow control setting, so we explicitly
1398 	 * set it to full.
1399 	 */
1400 	switch (hw->mac.type) {
1401 	case e1000_82573:
1402 	case e1000_82574:
1403 	case e1000_82583:
1404 		if (hw->fc.requested_mode == e1000_fc_default)
1405 			hw->fc.requested_mode = e1000_fc_full;
1406 		break;
1407 	default:
1408 		break;
1409 	}
1410 
1411 	return e1000e_setup_link_generic(hw);
1412 }
1413 
1414 /**
1415  *  e1000_setup_copper_link_82571 - Configure copper link settings
1416  *  @hw: pointer to the HW structure
1417  *
1418  *  Configures the link for auto-neg or forced speed and duplex.  Then we check
1419  *  for link, once link is established calls to configure collision distance
1420  *  and flow control are called.
1421  **/
e1000_setup_copper_link_82571(struct e1000_hw * hw)1422 static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw)
1423 {
1424 	u32 ctrl;
1425 	s32 ret_val;
1426 
1427 	ctrl = er32(CTRL);
1428 	ctrl |= E1000_CTRL_SLU;
1429 	ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1430 	ew32(CTRL, ctrl);
1431 
1432 	switch (hw->phy.type) {
1433 	case e1000_phy_m88:
1434 	case e1000_phy_bm:
1435 		ret_val = e1000e_copper_link_setup_m88(hw);
1436 		break;
1437 	case e1000_phy_igp_2:
1438 		ret_val = e1000e_copper_link_setup_igp(hw);
1439 		break;
1440 	default:
1441 		return -E1000_ERR_PHY;
1442 	}
1443 
1444 	if (ret_val)
1445 		return ret_val;
1446 
1447 	return e1000e_setup_copper_link(hw);
1448 }
1449 
1450 /**
1451  *  e1000_setup_fiber_serdes_link_82571 - Setup link for fiber/serdes
1452  *  @hw: pointer to the HW structure
1453  *
1454  *  Configures collision distance and flow control for fiber and serdes links.
1455  *  Upon successful setup, poll for link.
1456  **/
e1000_setup_fiber_serdes_link_82571(struct e1000_hw * hw)1457 static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw)
1458 {
1459 	switch (hw->mac.type) {
1460 	case e1000_82571:
1461 	case e1000_82572:
1462 		/* If SerDes loopback mode is entered, there is no form
1463 		 * of reset to take the adapter out of that mode.  So we
1464 		 * have to explicitly take the adapter out of loopback
1465 		 * mode.  This prevents drivers from twiddling their thumbs
1466 		 * if another tool failed to take it out of loopback mode.
1467 		 */
1468 		ew32(SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1469 		break;
1470 	default:
1471 		break;
1472 	}
1473 
1474 	return e1000e_setup_fiber_serdes_link(hw);
1475 }
1476 
1477 /**
1478  *  e1000_check_for_serdes_link_82571 - Check for link (Serdes)
1479  *  @hw: pointer to the HW structure
1480  *
1481  *  Reports the link state as up or down.
1482  *
1483  *  If autonegotiation is supported by the link partner, the link state is
1484  *  determined by the result of autonegotiation. This is the most likely case.
1485  *  If autonegotiation is not supported by the link partner, and the link
1486  *  has a valid signal, force the link up.
1487  *
1488  *  The link state is represented internally here by 4 states:
1489  *
1490  *  1) down
1491  *  2) autoneg_progress
1492  *  3) autoneg_complete (the link successfully autonegotiated)
1493  *  4) forced_up (the link has been forced up, it did not autonegotiate)
1494  *
1495  **/
e1000_check_for_serdes_link_82571(struct e1000_hw * hw)1496 static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw)
1497 {
1498 	struct e1000_mac_info *mac = &hw->mac;
1499 	u32 rxcw;
1500 	u32 ctrl;
1501 	u32 status;
1502 	u32 txcw;
1503 	u32 i;
1504 	s32 ret_val = 0;
1505 
1506 	ctrl = er32(CTRL);
1507 	status = er32(STATUS);
1508 	er32(RXCW);
1509 	/* SYNCH bit and IV bit are sticky */
1510 	usleep_range(10, 20);
1511 	rxcw = er32(RXCW);
1512 
1513 	if ((rxcw & E1000_RXCW_SYNCH) && !(rxcw & E1000_RXCW_IV)) {
1514 		/* Receiver is synchronized with no invalid bits.  */
1515 		switch (mac->serdes_link_state) {
1516 		case e1000_serdes_link_autoneg_complete:
1517 			if (!(status & E1000_STATUS_LU)) {
1518 				/* We have lost link, retry autoneg before
1519 				 * reporting link failure
1520 				 */
1521 				mac->serdes_link_state =
1522 				    e1000_serdes_link_autoneg_progress;
1523 				mac->serdes_has_link = false;
1524 				e_dbg("AN_UP     -> AN_PROG\n");
1525 			} else {
1526 				mac->serdes_has_link = true;
1527 			}
1528 			break;
1529 
1530 		case e1000_serdes_link_forced_up:
1531 			/* If we are receiving /C/ ordered sets, re-enable
1532 			 * auto-negotiation in the TXCW register and disable
1533 			 * forced link in the Device Control register in an
1534 			 * attempt to auto-negotiate with our link partner.
1535 			 */
1536 			if (rxcw & E1000_RXCW_C) {
1537 				/* Enable autoneg, and unforce link up */
1538 				ew32(TXCW, mac->txcw);
1539 				ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
1540 				mac->serdes_link_state =
1541 				    e1000_serdes_link_autoneg_progress;
1542 				mac->serdes_has_link = false;
1543 				e_dbg("FORCED_UP -> AN_PROG\n");
1544 			} else {
1545 				mac->serdes_has_link = true;
1546 			}
1547 			break;
1548 
1549 		case e1000_serdes_link_autoneg_progress:
1550 			if (rxcw & E1000_RXCW_C) {
1551 				/* We received /C/ ordered sets, meaning the
1552 				 * link partner has autonegotiated, and we can
1553 				 * trust the Link Up (LU) status bit.
1554 				 */
1555 				if (status & E1000_STATUS_LU) {
1556 					mac->serdes_link_state =
1557 					    e1000_serdes_link_autoneg_complete;
1558 					e_dbg("AN_PROG   -> AN_UP\n");
1559 					mac->serdes_has_link = true;
1560 				} else {
1561 					/* Autoneg completed, but failed. */
1562 					mac->serdes_link_state =
1563 					    e1000_serdes_link_down;
1564 					e_dbg("AN_PROG   -> DOWN\n");
1565 				}
1566 			} else {
1567 				/* The link partner did not autoneg.
1568 				 * Force link up and full duplex, and change
1569 				 * state to forced.
1570 				 */
1571 				ew32(TXCW, (mac->txcw & ~E1000_TXCW_ANE));
1572 				ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
1573 				ew32(CTRL, ctrl);
1574 
1575 				/* Configure Flow Control after link up. */
1576 				ret_val = e1000e_config_fc_after_link_up(hw);
1577 				if (ret_val) {
1578 					e_dbg("Error config flow control\n");
1579 					break;
1580 				}
1581 				mac->serdes_link_state =
1582 				    e1000_serdes_link_forced_up;
1583 				mac->serdes_has_link = true;
1584 				e_dbg("AN_PROG   -> FORCED_UP\n");
1585 			}
1586 			break;
1587 
1588 		case e1000_serdes_link_down:
1589 		default:
1590 			/* The link was down but the receiver has now gained
1591 			 * valid sync, so lets see if we can bring the link
1592 			 * up.
1593 			 */
1594 			ew32(TXCW, mac->txcw);
1595 			ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
1596 			mac->serdes_link_state =
1597 			    e1000_serdes_link_autoneg_progress;
1598 			mac->serdes_has_link = false;
1599 			e_dbg("DOWN      -> AN_PROG\n");
1600 			break;
1601 		}
1602 	} else {
1603 		if (!(rxcw & E1000_RXCW_SYNCH)) {
1604 			mac->serdes_has_link = false;
1605 			mac->serdes_link_state = e1000_serdes_link_down;
1606 			e_dbg("ANYSTATE  -> DOWN\n");
1607 		} else {
1608 			/* Check several times, if SYNCH bit and CONFIG
1609 			 * bit both are consistently 1 then simply ignore
1610 			 * the IV bit and restart Autoneg
1611 			 */
1612 			for (i = 0; i < AN_RETRY_COUNT; i++) {
1613 				usleep_range(10, 20);
1614 				rxcw = er32(RXCW);
1615 				if ((rxcw & E1000_RXCW_SYNCH) &&
1616 				    (rxcw & E1000_RXCW_C))
1617 					continue;
1618 
1619 				if (rxcw & E1000_RXCW_IV) {
1620 					mac->serdes_has_link = false;
1621 					mac->serdes_link_state =
1622 					    e1000_serdes_link_down;
1623 					e_dbg("ANYSTATE  -> DOWN\n");
1624 					break;
1625 				}
1626 			}
1627 
1628 			if (i == AN_RETRY_COUNT) {
1629 				txcw = er32(TXCW);
1630 				txcw |= E1000_TXCW_ANE;
1631 				ew32(TXCW, txcw);
1632 				mac->serdes_link_state =
1633 				    e1000_serdes_link_autoneg_progress;
1634 				mac->serdes_has_link = false;
1635 				e_dbg("ANYSTATE  -> AN_PROG\n");
1636 			}
1637 		}
1638 	}
1639 
1640 	return ret_val;
1641 }
1642 
1643 /**
1644  *  e1000_valid_led_default_82571 - Verify a valid default LED config
1645  *  @hw: pointer to the HW structure
1646  *  @data: pointer to the NVM (EEPROM)
1647  *
1648  *  Read the EEPROM for the current default LED configuration.  If the
1649  *  LED configuration is not valid, set to a valid LED configuration.
1650  **/
e1000_valid_led_default_82571(struct e1000_hw * hw,u16 * data)1651 static s32 e1000_valid_led_default_82571(struct e1000_hw *hw, u16 *data)
1652 {
1653 	s32 ret_val;
1654 
1655 	ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
1656 	if (ret_val) {
1657 		e_dbg("NVM Read Error\n");
1658 		return ret_val;
1659 	}
1660 
1661 	switch (hw->mac.type) {
1662 	case e1000_82573:
1663 	case e1000_82574:
1664 	case e1000_82583:
1665 		if (*data == ID_LED_RESERVED_F746)
1666 			*data = ID_LED_DEFAULT_82573;
1667 		break;
1668 	default:
1669 		if (*data == ID_LED_RESERVED_0000 ||
1670 		    *data == ID_LED_RESERVED_FFFF)
1671 			*data = ID_LED_DEFAULT;
1672 		break;
1673 	}
1674 
1675 	return 0;
1676 }
1677 
1678 /**
1679  *  e1000e_get_laa_state_82571 - Get locally administered address state
1680  *  @hw: pointer to the HW structure
1681  *
1682  *  Retrieve and return the current locally administered address state.
1683  **/
e1000e_get_laa_state_82571(struct e1000_hw * hw)1684 bool e1000e_get_laa_state_82571(struct e1000_hw *hw)
1685 {
1686 	if (hw->mac.type != e1000_82571)
1687 		return false;
1688 
1689 	return hw->dev_spec.e82571.laa_is_present;
1690 }
1691 
1692 /**
1693  *  e1000e_set_laa_state_82571 - Set locally administered address state
1694  *  @hw: pointer to the HW structure
1695  *  @state: enable/disable locally administered address
1696  *
1697  *  Enable/Disable the current locally administered address state.
1698  **/
e1000e_set_laa_state_82571(struct e1000_hw * hw,bool state)1699 void e1000e_set_laa_state_82571(struct e1000_hw *hw, bool state)
1700 {
1701 	if (hw->mac.type != e1000_82571)
1702 		return;
1703 
1704 	hw->dev_spec.e82571.laa_is_present = state;
1705 
1706 	/* If workaround is activated... */
1707 	if (state)
1708 		/* Hold a copy of the LAA in RAR[14] This is done so that
1709 		 * between the time RAR[0] gets clobbered and the time it
1710 		 * gets fixed, the actual LAA is in one of the RARs and no
1711 		 * incoming packets directed to this port are dropped.
1712 		 * Eventually the LAA will be in RAR[0] and RAR[14].
1713 		 */
1714 		hw->mac.ops.rar_set(hw, hw->mac.addr,
1715 				    hw->mac.rar_entry_count - 1);
1716 }
1717 
1718 /**
1719  *  e1000_fix_nvm_checksum_82571 - Fix EEPROM checksum
1720  *  @hw: pointer to the HW structure
1721  *
1722  *  Verifies that the EEPROM has completed the update.  After updating the
1723  *  EEPROM, we need to check bit 15 in work 0x23 for the checksum fix.  If
1724  *  the checksum fix is not implemented, we need to set the bit and update
1725  *  the checksum.  Otherwise, if bit 15 is set and the checksum is incorrect,
1726  *  we need to return bad checksum.
1727  **/
e1000_fix_nvm_checksum_82571(struct e1000_hw * hw)1728 static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
1729 {
1730 	struct e1000_nvm_info *nvm = &hw->nvm;
1731 	s32 ret_val;
1732 	u16 data;
1733 
1734 	if (nvm->type != e1000_nvm_flash_hw)
1735 		return 0;
1736 
1737 	/* Check bit 4 of word 10h.  If it is 0, firmware is done updating
1738 	 * 10h-12h.  Checksum may need to be fixed.
1739 	 */
1740 	ret_val = e1000_read_nvm(hw, 0x10, 1, &data);
1741 	if (ret_val)
1742 		return ret_val;
1743 
1744 	if (!(data & 0x10)) {
1745 		/* Read 0x23 and check bit 15.  This bit is a 1
1746 		 * when the checksum has already been fixed.  If
1747 		 * the checksum is still wrong and this bit is a
1748 		 * 1, we need to return bad checksum.  Otherwise,
1749 		 * we need to set this bit to a 1 and update the
1750 		 * checksum.
1751 		 */
1752 		ret_val = e1000_read_nvm(hw, 0x23, 1, &data);
1753 		if (ret_val)
1754 			return ret_val;
1755 
1756 		if (!(data & 0x8000)) {
1757 			data |= 0x8000;
1758 			ret_val = e1000_write_nvm(hw, 0x23, 1, &data);
1759 			if (ret_val)
1760 				return ret_val;
1761 			ret_val = e1000e_update_nvm_checksum(hw);
1762 			if (ret_val)
1763 				return ret_val;
1764 		}
1765 	}
1766 
1767 	return 0;
1768 }
1769 
1770 /**
1771  *  e1000_read_mac_addr_82571 - Read device MAC address
1772  *  @hw: pointer to the HW structure
1773  **/
e1000_read_mac_addr_82571(struct e1000_hw * hw)1774 static s32 e1000_read_mac_addr_82571(struct e1000_hw *hw)
1775 {
1776 	if (hw->mac.type == e1000_82571) {
1777 		s32 ret_val;
1778 
1779 		/* If there's an alternate MAC address place it in RAR0
1780 		 * so that it will override the Si installed default perm
1781 		 * address.
1782 		 */
1783 		ret_val = e1000_check_alt_mac_addr_generic(hw);
1784 		if (ret_val)
1785 			return ret_val;
1786 	}
1787 
1788 	return e1000_read_mac_addr_generic(hw);
1789 }
1790 
1791 /**
1792  * e1000_power_down_phy_copper_82571 - Remove link during PHY power down
1793  * @hw: pointer to the HW structure
1794  *
1795  * In the case of a PHY power down to save power, or to turn off link during a
1796  * driver unload, or wake on lan is not enabled, remove the link.
1797  **/
e1000_power_down_phy_copper_82571(struct e1000_hw * hw)1798 static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw)
1799 {
1800 	struct e1000_phy_info *phy = &hw->phy;
1801 	struct e1000_mac_info *mac = &hw->mac;
1802 
1803 	if (!phy->ops.check_reset_block)
1804 		return;
1805 
1806 	/* If the management interface is not enabled, then power down */
1807 	if (!(mac->ops.check_mng_mode(hw) || phy->ops.check_reset_block(hw)))
1808 		e1000_power_down_phy_copper(hw);
1809 }
1810 
1811 /**
1812  *  e1000_clear_hw_cntrs_82571 - Clear device specific hardware counters
1813  *  @hw: pointer to the HW structure
1814  *
1815  *  Clears the hardware counters by reading the counter registers.
1816  **/
e1000_clear_hw_cntrs_82571(struct e1000_hw * hw)1817 static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw)
1818 {
1819 	e1000e_clear_hw_cntrs_base(hw);
1820 
1821 	er32(PRC64);
1822 	er32(PRC127);
1823 	er32(PRC255);
1824 	er32(PRC511);
1825 	er32(PRC1023);
1826 	er32(PRC1522);
1827 	er32(PTC64);
1828 	er32(PTC127);
1829 	er32(PTC255);
1830 	er32(PTC511);
1831 	er32(PTC1023);
1832 	er32(PTC1522);
1833 
1834 	er32(ALGNERRC);
1835 	er32(RXERRC);
1836 	er32(TNCRS);
1837 	er32(CEXTERR);
1838 	er32(TSCTC);
1839 	er32(TSCTFC);
1840 
1841 	er32(MGTPRC);
1842 	er32(MGTPDC);
1843 	er32(MGTPTC);
1844 
1845 	er32(IAC);
1846 	er32(ICRXOC);
1847 
1848 	er32(ICRXPTC);
1849 	er32(ICRXATC);
1850 	er32(ICTXPTC);
1851 	er32(ICTXATC);
1852 	er32(ICTXQEC);
1853 	er32(ICTXQMTC);
1854 	er32(ICRXDMTC);
1855 }
1856 
1857 static const struct e1000_mac_operations e82571_mac_ops = {
1858 	/* .check_mng_mode: mac type dependent */
1859 	/* .check_for_link: media type dependent */
1860 	.id_led_init		= e1000e_id_led_init_generic,
1861 	.cleanup_led		= e1000e_cleanup_led_generic,
1862 	.clear_hw_cntrs		= e1000_clear_hw_cntrs_82571,
1863 	.get_bus_info		= e1000e_get_bus_info_pcie,
1864 	.set_lan_id		= e1000_set_lan_id_multi_port_pcie,
1865 	/* .get_link_up_info: media type dependent */
1866 	/* .led_on: mac type dependent */
1867 	.led_off		= e1000e_led_off_generic,
1868 	.update_mc_addr_list	= e1000e_update_mc_addr_list_generic,
1869 	.write_vfta		= e1000_write_vfta_generic,
1870 	.clear_vfta		= e1000_clear_vfta_82571,
1871 	.reset_hw		= e1000_reset_hw_82571,
1872 	.init_hw		= e1000_init_hw_82571,
1873 	.setup_link		= e1000_setup_link_82571,
1874 	/* .setup_physical_interface: media type dependent */
1875 	.setup_led		= e1000e_setup_led_generic,
1876 	.config_collision_dist	= e1000e_config_collision_dist_generic,
1877 	.read_mac_addr		= e1000_read_mac_addr_82571,
1878 	.rar_set		= e1000e_rar_set_generic,
1879 	.rar_get_count		= e1000e_rar_get_count_generic,
1880 };
1881 
1882 static const struct e1000_phy_operations e82_phy_ops_igp = {
1883 	.acquire		= e1000_get_hw_semaphore_82571,
1884 	.check_polarity		= e1000_check_polarity_igp,
1885 	.check_reset_block	= e1000e_check_reset_block_generic,
1886 	.commit			= NULL,
1887 	.force_speed_duplex	= e1000e_phy_force_speed_duplex_igp,
1888 	.get_cfg_done		= e1000_get_cfg_done_82571,
1889 	.get_cable_length	= e1000e_get_cable_length_igp_2,
1890 	.get_info		= e1000e_get_phy_info_igp,
1891 	.read_reg		= e1000e_read_phy_reg_igp,
1892 	.release		= e1000_put_hw_semaphore_82571,
1893 	.reset			= e1000e_phy_hw_reset_generic,
1894 	.set_d0_lplu_state	= e1000_set_d0_lplu_state_82571,
1895 	.set_d3_lplu_state	= e1000e_set_d3_lplu_state,
1896 	.write_reg		= e1000e_write_phy_reg_igp,
1897 	.cfg_on_link_up		= NULL,
1898 };
1899 
1900 static const struct e1000_phy_operations e82_phy_ops_m88 = {
1901 	.acquire		= e1000_get_hw_semaphore_82571,
1902 	.check_polarity		= e1000_check_polarity_m88,
1903 	.check_reset_block	= e1000e_check_reset_block_generic,
1904 	.commit			= e1000e_phy_sw_reset,
1905 	.force_speed_duplex	= e1000e_phy_force_speed_duplex_m88,
1906 	.get_cfg_done		= e1000e_get_cfg_done_generic,
1907 	.get_cable_length	= e1000e_get_cable_length_m88,
1908 	.get_info		= e1000e_get_phy_info_m88,
1909 	.read_reg		= e1000e_read_phy_reg_m88,
1910 	.release		= e1000_put_hw_semaphore_82571,
1911 	.reset			= e1000e_phy_hw_reset_generic,
1912 	.set_d0_lplu_state	= e1000_set_d0_lplu_state_82571,
1913 	.set_d3_lplu_state	= e1000e_set_d3_lplu_state,
1914 	.write_reg		= e1000e_write_phy_reg_m88,
1915 	.cfg_on_link_up		= NULL,
1916 };
1917 
1918 static const struct e1000_phy_operations e82_phy_ops_bm = {
1919 	.acquire		= e1000_get_hw_semaphore_82571,
1920 	.check_polarity		= e1000_check_polarity_m88,
1921 	.check_reset_block	= e1000e_check_reset_block_generic,
1922 	.commit			= e1000e_phy_sw_reset,
1923 	.force_speed_duplex	= e1000e_phy_force_speed_duplex_m88,
1924 	.get_cfg_done		= e1000e_get_cfg_done_generic,
1925 	.get_cable_length	= e1000e_get_cable_length_m88,
1926 	.get_info		= e1000e_get_phy_info_m88,
1927 	.read_reg		= e1000e_read_phy_reg_bm2,
1928 	.release		= e1000_put_hw_semaphore_82571,
1929 	.reset			= e1000e_phy_hw_reset_generic,
1930 	.set_d0_lplu_state	= e1000_set_d0_lplu_state_82571,
1931 	.set_d3_lplu_state	= e1000e_set_d3_lplu_state,
1932 	.write_reg		= e1000e_write_phy_reg_bm2,
1933 	.cfg_on_link_up		= NULL,
1934 };
1935 
1936 static const struct e1000_nvm_operations e82571_nvm_ops = {
1937 	.acquire		= e1000_acquire_nvm_82571,
1938 	.read			= e1000e_read_nvm_eerd,
1939 	.release		= e1000_release_nvm_82571,
1940 	.reload			= e1000e_reload_nvm_generic,
1941 	.update			= e1000_update_nvm_checksum_82571,
1942 	.valid_led_default	= e1000_valid_led_default_82571,
1943 	.validate		= e1000_validate_nvm_checksum_82571,
1944 	.write			= e1000_write_nvm_82571,
1945 };
1946 
1947 const struct e1000_info e1000_82571_info = {
1948 	.mac			= e1000_82571,
1949 	.flags			= FLAG_HAS_HW_VLAN_FILTER
1950 				  | FLAG_HAS_JUMBO_FRAMES
1951 				  | FLAG_HAS_WOL
1952 				  | FLAG_APME_IN_CTRL3
1953 				  | FLAG_HAS_CTRLEXT_ON_LOAD
1954 				  | FLAG_HAS_SMART_POWER_DOWN
1955 				  | FLAG_RESET_OVERWRITES_LAA /* errata */
1956 				  | FLAG_TARC_SPEED_MODE_BIT /* errata */
1957 				  | FLAG_APME_CHECK_PORT_B,
1958 	.flags2			= FLAG2_DISABLE_ASPM_L1 /* errata 13 */
1959 				  | FLAG2_DMA_BURST,
1960 	.pba			= 38,
1961 	.max_hw_frame_size	= DEFAULT_JUMBO,
1962 	.get_variants		= e1000_get_variants_82571,
1963 	.mac_ops		= &e82571_mac_ops,
1964 	.phy_ops		= &e82_phy_ops_igp,
1965 	.nvm_ops		= &e82571_nvm_ops,
1966 };
1967 
1968 const struct e1000_info e1000_82572_info = {
1969 	.mac			= e1000_82572,
1970 	.flags			= FLAG_HAS_HW_VLAN_FILTER
1971 				  | FLAG_HAS_JUMBO_FRAMES
1972 				  | FLAG_HAS_WOL
1973 				  | FLAG_APME_IN_CTRL3
1974 				  | FLAG_HAS_CTRLEXT_ON_LOAD
1975 				  | FLAG_TARC_SPEED_MODE_BIT, /* errata */
1976 	.flags2			= FLAG2_DISABLE_ASPM_L1 /* errata 13 */
1977 				  | FLAG2_DMA_BURST,
1978 	.pba			= 38,
1979 	.max_hw_frame_size	= DEFAULT_JUMBO,
1980 	.get_variants		= e1000_get_variants_82571,
1981 	.mac_ops		= &e82571_mac_ops,
1982 	.phy_ops		= &e82_phy_ops_igp,
1983 	.nvm_ops		= &e82571_nvm_ops,
1984 };
1985 
1986 const struct e1000_info e1000_82573_info = {
1987 	.mac			= e1000_82573,
1988 	.flags			= FLAG_HAS_HW_VLAN_FILTER
1989 				  | FLAG_HAS_WOL
1990 				  | FLAG_APME_IN_CTRL3
1991 				  | FLAG_HAS_SMART_POWER_DOWN
1992 				  | FLAG_HAS_AMT
1993 				  | FLAG_HAS_SWSM_ON_LOAD,
1994 	.flags2			= FLAG2_DISABLE_ASPM_L1
1995 				  | FLAG2_DISABLE_ASPM_L0S,
1996 	.pba			= 20,
1997 	.max_hw_frame_size	= VLAN_ETH_FRAME_LEN + ETH_FCS_LEN,
1998 	.get_variants		= e1000_get_variants_82571,
1999 	.mac_ops		= &e82571_mac_ops,
2000 	.phy_ops		= &e82_phy_ops_m88,
2001 	.nvm_ops		= &e82571_nvm_ops,
2002 };
2003 
2004 const struct e1000_info e1000_82574_info = {
2005 	.mac			= e1000_82574,
2006 	.flags			= FLAG_HAS_HW_VLAN_FILTER
2007 				  | FLAG_HAS_MSIX
2008 				  | FLAG_HAS_JUMBO_FRAMES
2009 				  | FLAG_HAS_WOL
2010 				  | FLAG_HAS_HW_TIMESTAMP
2011 				  | FLAG_APME_IN_CTRL3
2012 				  | FLAG_HAS_SMART_POWER_DOWN
2013 				  | FLAG_HAS_AMT
2014 				  | FLAG_HAS_CTRLEXT_ON_LOAD,
2015 	.flags2			 = FLAG2_CHECK_PHY_HANG
2016 				  | FLAG2_DISABLE_ASPM_L0S
2017 				  | FLAG2_DISABLE_ASPM_L1
2018 				  | FLAG2_NO_DISABLE_RX
2019 				  | FLAG2_DMA_BURST
2020 				  | FLAG2_CHECK_SYSTIM_OVERFLOW,
2021 	.pba			= 32,
2022 	.max_hw_frame_size	= DEFAULT_JUMBO,
2023 	.get_variants		= e1000_get_variants_82571,
2024 	.mac_ops		= &e82571_mac_ops,
2025 	.phy_ops		= &e82_phy_ops_bm,
2026 	.nvm_ops		= &e82571_nvm_ops,
2027 };
2028 
2029 const struct e1000_info e1000_82583_info = {
2030 	.mac			= e1000_82583,
2031 	.flags			= FLAG_HAS_HW_VLAN_FILTER
2032 				  | FLAG_HAS_WOL
2033 				  | FLAG_HAS_HW_TIMESTAMP
2034 				  | FLAG_APME_IN_CTRL3
2035 				  | FLAG_HAS_SMART_POWER_DOWN
2036 				  | FLAG_HAS_AMT
2037 				  | FLAG_HAS_JUMBO_FRAMES
2038 				  | FLAG_HAS_CTRLEXT_ON_LOAD,
2039 	.flags2			= FLAG2_DISABLE_ASPM_L0S
2040 				  | FLAG2_DISABLE_ASPM_L1
2041 				  | FLAG2_NO_DISABLE_RX
2042 				  | FLAG2_CHECK_SYSTIM_OVERFLOW,
2043 	.pba			= 32,
2044 	.max_hw_frame_size	= DEFAULT_JUMBO,
2045 	.get_variants		= e1000_get_variants_82571,
2046 	.mac_ops		= &e82571_mac_ops,
2047 	.phy_ops		= &e82_phy_ops_bm,
2048 	.nvm_ops		= &e82571_nvm_ops,
2049 };
2050