1/******************************************************************************
2
3 Copyright (c) 2001-2015, Intel Corporation
4 All rights reserved.
5
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7 modification, are permitted provided that the following conditions are met:
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32******************************************************************************/
33/*$FreeBSD: head/sys/dev/e1000/e1000_82541.c 287990 2015-09-19 18:22:59Z sbruno $*/
34
35/*
36 * 82541EI Gigabit Ethernet Controller
37 * 82541ER Gigabit Ethernet Controller
38 * 82541GI Gigabit Ethernet Controller
39 * 82541PI Gigabit Ethernet Controller
40 * 82547EI Gigabit Ethernet Controller
41 * 82547GI Gigabit Ethernet Controller
42 */
43
44#include "e1000_api.h"
45
46static s32 e1000_init_phy_params_82541(struct e1000_hw *hw);
47static s32 e1000_init_nvm_params_82541(struct e1000_hw *hw);
48static s32 e1000_init_mac_params_82541(struct e1000_hw *hw);
49static s32 e1000_reset_hw_82541(struct e1000_hw *hw);
50static s32 e1000_init_hw_82541(struct e1000_hw *hw);
51static s32 e1000_get_link_up_info_82541(struct e1000_hw *hw, u16 *speed,
52 u16 *duplex);
53static s32 e1000_phy_hw_reset_82541(struct e1000_hw *hw);
54static s32 e1000_setup_copper_link_82541(struct e1000_hw *hw);
55static s32 e1000_check_for_link_82541(struct e1000_hw *hw);
56static s32 e1000_get_cable_length_igp_82541(struct e1000_hw *hw);
57static s32 e1000_set_d3_lplu_state_82541(struct e1000_hw *hw,
58 bool active);
59static s32 e1000_setup_led_82541(struct e1000_hw *hw);
60static s32 e1000_cleanup_led_82541(struct e1000_hw *hw);
61static void e1000_clear_hw_cntrs_82541(struct e1000_hw *hw);
62static s32 e1000_read_mac_addr_82541(struct e1000_hw *hw);
63static s32 e1000_config_dsp_after_link_change_82541(struct e1000_hw *hw,
64 bool link_up);
65static s32 e1000_phy_init_script_82541(struct e1000_hw *hw);
66static void e1000_power_down_phy_copper_82541(struct e1000_hw *hw);
67
68static const u16 e1000_igp_cable_length_table[] = {
69 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10,
70 10, 10, 20, 20, 20, 20, 20, 25, 25, 25, 25, 25, 25, 25, 30, 30, 30, 30,
71 40, 40, 40, 40, 40, 40, 40, 40, 40, 50, 50, 50, 50, 50, 50, 50, 60, 60,
72 60, 60, 60, 60, 60, 60, 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80,
73 80, 90, 90, 90, 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100,
74 100, 100, 100, 100, 100, 100, 100, 100, 110, 110, 110, 110, 110, 110,
75 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 120, 120,
76 120, 120, 120, 120, 120, 120, 120, 120};
77#define IGP01E1000_AGC_LENGTH_TABLE_SIZE \
78 (sizeof(e1000_igp_cable_length_table) / \
79 sizeof(e1000_igp_cable_length_table[0]))
80
81/**
82 * e1000_init_phy_params_82541 - Init PHY func ptrs.
83 * @hw: pointer to the HW structure
84 **/
85static s32 e1000_init_phy_params_82541(struct e1000_hw *hw)
86{
87 struct e1000_phy_info *phy = &hw->phy;
88 s32 ret_val = E1000_SUCCESS;
89
90 DEBUGFUNC("e1000_init_phy_params_82541");
91
92 phy->addr = 1;
93 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
94 phy->reset_delay_us = 10000;
95 phy->type = e1000_phy_igp;
96
97 /* Function Pointers */
98 phy->ops.check_polarity = e1000_check_polarity_igp;
99 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
100 phy->ops.get_cable_length = e1000_get_cable_length_igp_82541;
101 phy->ops.get_cfg_done = e1000_get_cfg_done_generic;
102 phy->ops.get_info = e1000_get_phy_info_igp;
103 phy->ops.read_reg = e1000_read_phy_reg_igp;
104 phy->ops.reset = e1000_phy_hw_reset_82541;
105 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82541;
106 phy->ops.write_reg = e1000_write_phy_reg_igp;
107 phy->ops.power_up = e1000_power_up_phy_copper;
108 phy->ops.power_down = e1000_power_down_phy_copper_82541;
109
110 ret_val = e1000_get_phy_id(hw);
111 if (ret_val)
112 goto out;
113
114 /* Verify phy id */
115 if (phy->id != IGP01E1000_I_PHY_ID) {
116 ret_val = -E1000_ERR_PHY;
117 goto out;
118 }
119
120out:
121 return ret_val;
122}
123
124/**
125 * e1000_init_nvm_params_82541 - Init NVM func ptrs.
126 * @hw: pointer to the HW structure
127 **/
128static s32 e1000_init_nvm_params_82541(struct e1000_hw *hw)
129{
130 struct e1000_nvm_info *nvm = &hw->nvm;
131 s32 ret_val = E1000_SUCCESS;
132 u32 eecd = E1000_READ_REG(hw, E1000_EECD);
133 u16 size;
134
135 DEBUGFUNC("e1000_init_nvm_params_82541");
136
137 switch (nvm->override) {
138 case e1000_nvm_override_spi_large:
139 nvm->type = e1000_nvm_eeprom_spi;
140 eecd |= E1000_EECD_ADDR_BITS;
141 break;
142 case e1000_nvm_override_spi_small:
143 nvm->type = e1000_nvm_eeprom_spi;
144 eecd &= ~E1000_EECD_ADDR_BITS;
145 break;
146 case e1000_nvm_override_microwire_large:
147 nvm->type = e1000_nvm_eeprom_microwire;
148 eecd |= E1000_EECD_SIZE;
149 break;
150 case e1000_nvm_override_microwire_small:
151 nvm->type = e1000_nvm_eeprom_microwire;
152 eecd &= ~E1000_EECD_SIZE;
153 break;
154 default:
155 nvm->type = eecd & E1000_EECD_TYPE ? e1000_nvm_eeprom_spi
156 : e1000_nvm_eeprom_microwire;
157 break;
158 }
159
160 if (nvm->type == e1000_nvm_eeprom_spi) {
161 nvm->address_bits = (eecd & E1000_EECD_ADDR_BITS) ? 16 : 8;
162 nvm->delay_usec = 1;
163 nvm->opcode_bits = 8;
164 nvm->page_size = (eecd & E1000_EECD_ADDR_BITS) ? 32 : 8;
165
166 /* Function Pointers */
167 nvm->ops.acquire = e1000_acquire_nvm_generic;
168 nvm->ops.read = e1000_read_nvm_spi;
169 nvm->ops.release = e1000_release_nvm_generic;
170 nvm->ops.update = e1000_update_nvm_checksum_generic;
171 nvm->ops.valid_led_default = e1000_valid_led_default_generic;
172 nvm->ops.validate = e1000_validate_nvm_checksum_generic;
173 nvm->ops.write = e1000_write_nvm_spi;
174
175 /*
176 * nvm->word_size must be discovered after the pointers
177 * are set so we can verify the size from the nvm image
178 * itself. Temporarily set it to a dummy value so the
179 * read will work.
180 */
181 nvm->word_size = 64;
182 ret_val = nvm->ops.read(hw, NVM_CFG, 1, &size);
183 if (ret_val)
184 goto out;
185 size = (size & NVM_SIZE_MASK) >> NVM_SIZE_SHIFT;
186 /*
187 * if size != 0, it can be added to a constant and become
188 * the left-shift value to set the word_size. Otherwise,
189 * word_size stays at 64.
190 */
191 if (size) {
192 size += NVM_WORD_SIZE_BASE_SHIFT_82541;
193 nvm->word_size = 1 << size;
194 }
195 } else {
196 nvm->address_bits = (eecd & E1000_EECD_ADDR_BITS) ? 8 : 6;
197 nvm->delay_usec = 50;
198 nvm->opcode_bits = 3;
199 nvm->word_size = (eecd & E1000_EECD_ADDR_BITS) ? 256 : 64;
200
201 /* Function Pointers */
202 nvm->ops.acquire = e1000_acquire_nvm_generic;
203 nvm->ops.read = e1000_read_nvm_microwire;
204 nvm->ops.release = e1000_release_nvm_generic;
205 nvm->ops.update = e1000_update_nvm_checksum_generic;
206 nvm->ops.valid_led_default = e1000_valid_led_default_generic;
207 nvm->ops.validate = e1000_validate_nvm_checksum_generic;
208 nvm->ops.write = e1000_write_nvm_microwire;
209 }
210
211out:
212 return ret_val;
213}
214
215/**
216 * e1000_init_mac_params_82541 - Init MAC func ptrs.
217 * @hw: pointer to the HW structure
218 **/
219static s32 e1000_init_mac_params_82541(struct e1000_hw *hw)
220{
221 struct e1000_mac_info *mac = &hw->mac;
222
223 DEBUGFUNC("e1000_init_mac_params_82541");
224
225 /* Set media type */
226 hw->phy.media_type = e1000_media_type_copper;
227 /* Set mta register count */
228 mac->mta_reg_count = 128;
229 /* Set rar entry count */
230 mac->rar_entry_count = E1000_RAR_ENTRIES;
231 /* Set if part includes ASF firmware */
232 mac->asf_firmware_present = TRUE;
233
234 /* Function Pointers */
235
236 /* bus type/speed/width */
237 mac->ops.get_bus_info = e1000_get_bus_info_pci_generic;
238 /* function id */
239 mac->ops.set_lan_id = e1000_set_lan_id_single_port;
240 /* reset */
241 mac->ops.reset_hw = e1000_reset_hw_82541;
242 /* hw initialization */
243 mac->ops.init_hw = e1000_init_hw_82541;
244 /* link setup */
245 mac->ops.setup_link = e1000_setup_link_generic;
246 /* physical interface link setup */
247 mac->ops.setup_physical_interface = e1000_setup_copper_link_82541;
248 /* check for link */
249 mac->ops.check_for_link = e1000_check_for_link_82541;
250 /* link info */
251 mac->ops.get_link_up_info = e1000_get_link_up_info_82541;
252 /* multicast address update */
253 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic;
254 /* writing VFTA */
255 mac->ops.write_vfta = e1000_write_vfta_generic;
256 /* clearing VFTA */
257 mac->ops.clear_vfta = e1000_clear_vfta_generic;
258 /* read mac address */
259 mac->ops.read_mac_addr = e1000_read_mac_addr_82541;
260 /* ID LED init */
261 mac->ops.id_led_init = e1000_id_led_init_generic;
262 /* setup LED */
263 mac->ops.setup_led = e1000_setup_led_82541;
264 /* cleanup LED */
265 mac->ops.cleanup_led = e1000_cleanup_led_82541;
266 /* turn on/off LED */
267 mac->ops.led_on = e1000_led_on_generic;
268 mac->ops.led_off = e1000_led_off_generic;
269 /* clear hardware counters */
270 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_82541;
271
272 return E1000_SUCCESS;
273}
274
275/**
276 * e1000_init_function_pointers_82541 - Init func ptrs.
277 * @hw: pointer to the HW structure
278 *
279 * Called to initialize all function pointers and parameters.
280 **/
281void e1000_init_function_pointers_82541(struct e1000_hw *hw)
282{
283 DEBUGFUNC("e1000_init_function_pointers_82541");
284
285 hw->mac.ops.init_params = e1000_init_mac_params_82541;
286 hw->nvm.ops.init_params = e1000_init_nvm_params_82541;
287 hw->phy.ops.init_params = e1000_init_phy_params_82541;
288}
289
290/**
291 * e1000_reset_hw_82541 - Reset hardware
292 * @hw: pointer to the HW structure
293 *
294 * This resets the hardware into a known state.
295 **/
296static s32 e1000_reset_hw_82541(struct e1000_hw *hw)
297{
298 u32 ledctl, ctrl, icr, manc;
299
300 DEBUGFUNC("e1000_reset_hw_82541");
301
302 DEBUGOUT("Masking off all interrupts\n");
303 E1000_WRITE_REG(hw, E1000_IMC, 0xFFFFFFFF);
304
305 E1000_WRITE_REG(hw, E1000_RCTL, 0);
306 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
307 E1000_WRITE_FLUSH(hw);
308
309 /*
310 * Delay to allow any outstanding PCI transactions to complete
311 * before resetting the device.
312 */
313 msec_delay(10);
314
315 ctrl = E1000_READ_REG(hw, E1000_CTRL);
316
317 /* Must reset the Phy before resetting the MAC */
318 if ((hw->mac.type == e1000_82541) || (hw->mac.type == e1000_82547)) {
319 E1000_WRITE_REG(hw, E1000_CTRL, (ctrl | E1000_CTRL_PHY_RST));
320 msec_delay(5);
321 }
322
323 DEBUGOUT("Issuing a global reset to 82541/82547 MAC\n");
324 switch (hw->mac.type) {
325 case e1000_82541:
326 case e1000_82541_rev_2:
327 /*
328 * These controllers can't ack the 64-bit write when
329 * issuing the reset, so we use IO-mapping as a
330 * workaround to issue the reset.
331 */
332 E1000_WRITE_REG_IO(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
333 break;
334 default:
335 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
336 break;
337 }
338
339 /* Wait for NVM reload */
340 msec_delay(20);
341
342 /* Disable HW ARPs on ASF enabled adapters */
343 manc = E1000_READ_REG(hw, E1000_MANC);
344 manc &= ~E1000_MANC_ARP_EN;
345 E1000_WRITE_REG(hw, E1000_MANC, manc);
346
347 if ((hw->mac.type == e1000_82541) || (hw->mac.type == e1000_82547)) {
348 e1000_phy_init_script_82541(hw);
349
350 /* Configure activity LED after Phy reset */
351 ledctl = E1000_READ_REG(hw, E1000_LEDCTL);
352 ledctl &= IGP_ACTIVITY_LED_MASK;
353 ledctl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
354 E1000_WRITE_REG(hw, E1000_LEDCTL, ledctl);
355 }
356
357 /* Once again, mask the interrupts */
358 DEBUGOUT("Masking off all interrupts\n");
359 E1000_WRITE_REG(hw, E1000_IMC, 0xFFFFFFFF);
360
361 /* Clear any pending interrupt events. */
362 icr = E1000_READ_REG(hw, E1000_ICR);
363
364 return E1000_SUCCESS;
365}
366
367/**
368 * e1000_init_hw_82541 - Initialize hardware
369 * @hw: pointer to the HW structure
370 *
371 * This inits the hardware readying it for operation.
372 **/
373static s32 e1000_init_hw_82541(struct e1000_hw *hw)
374{
375 struct e1000_mac_info *mac = &hw->mac;
376 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
377 u32 i, txdctl;
378 s32 ret_val;
379
380 DEBUGFUNC("e1000_init_hw_82541");
381
382 /* Initialize identification LED */
383 ret_val = mac->ops.id_led_init(hw);
384 if (ret_val) {
385 DEBUGOUT("Error initializing identification LED\n");
386 /* This is not fatal and we should not stop init due to this */
387 }
388
389 /* Storing the Speed Power Down value for later use */
390 ret_val = hw->phy.ops.read_reg(hw, IGP01E1000_GMII_FIFO,
391 &dev_spec->spd_default);
392 if (ret_val)
393 goto out;
394
395 /* Disabling VLAN filtering */
396 DEBUGOUT("Initializing the IEEE VLAN\n");
397 mac->ops.clear_vfta(hw);
398
399 /* Setup the receive address. */
400 e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
401
402 /* Zero out the Multicast HASH table */
403 DEBUGOUT("Zeroing the MTA\n");
404 for (i = 0; i < mac->mta_reg_count; i++) {
405 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
406 /*
407 * Avoid back to back register writes by adding the register
408 * read (flush). This is to protect against some strange
409 * bridge configurations that may issue Memory Write Block
410 * (MWB) to our register space.
411 */
412 E1000_WRITE_FLUSH(hw);
413 }
414
415 /* Setup link and flow control */
416 ret_val = mac->ops.setup_link(hw);
417
418 txdctl = E1000_READ_REG(hw, E1000_TXDCTL(0));
419 txdctl = (txdctl & ~E1000_TXDCTL_WTHRESH) |
420 E1000_TXDCTL_FULL_TX_DESC_WB;
421 E1000_WRITE_REG(hw, E1000_TXDCTL(0), txdctl);
422
423 /*
424 * Clear all of the statistics registers (clear on read). It is
425 * important that we do this after we have tried to establish link
426 * because the symbol error count will increment wildly if there
427 * is no link.
428 */
429 e1000_clear_hw_cntrs_82541(hw);
430
431out:
432 return ret_val;
433}
434
435/**
436 * e1000_get_link_up_info_82541 - Report speed and duplex
437 * @hw: pointer to the HW structure
438 * @speed: pointer to speed buffer
439 * @duplex: pointer to duplex buffer
440 *
441 * Retrieve the current speed and duplex configuration.
442 **/
443static s32 e1000_get_link_up_info_82541(struct e1000_hw *hw, u16 *speed,
444 u16 *duplex)
445{
446 struct e1000_phy_info *phy = &hw->phy;
447 s32 ret_val;
448 u16 data;
449
450 DEBUGFUNC("e1000_get_link_up_info_82541");
451
452 ret_val = e1000_get_speed_and_duplex_copper_generic(hw, speed, duplex);
453 if (ret_val)
454 goto out;
455
456 if (!phy->speed_downgraded)
457 goto out;
458
459 /*
460 * IGP01 PHY may advertise full duplex operation after speed
461 * downgrade even if it is operating at half duplex.
462 * Here we set the duplex settings to match the duplex in the
463 * link partner's capabilities.
464 */
465 ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_EXP, &data);
466 if (ret_val)
467 goto out;
468
469 if (!(data & NWAY_ER_LP_NWAY_CAPS)) {
470 *duplex = HALF_DUPLEX;
471 } else {
472 ret_val = phy->ops.read_reg(hw, PHY_LP_ABILITY, &data);
473 if (ret_val)
474 goto out;
475
476 if (*speed == SPEED_100) {
477 if (!(data & NWAY_LPAR_100TX_FD_CAPS))
478 *duplex = HALF_DUPLEX;
479 } else if (*speed == SPEED_10) {
480 if (!(data & NWAY_LPAR_10T_FD_CAPS))
481 *duplex = HALF_DUPLEX;
482 }
483 }
484
485out:
486 return ret_val;
487}
488
489/**
490 * e1000_phy_hw_reset_82541 - PHY hardware reset
491 * @hw: pointer to the HW structure
492 *
493 * Verify the reset block is not blocking us from resetting. Acquire
494 * semaphore (if necessary) and read/set/write the device control reset
495 * bit in the PHY. Wait the appropriate delay time for the device to
496 * reset and release the semaphore (if necessary).
497 **/
498static s32 e1000_phy_hw_reset_82541(struct e1000_hw *hw)
499{
500 s32 ret_val;
501 u32 ledctl;
502
503 DEBUGFUNC("e1000_phy_hw_reset_82541");
504
505 ret_val = e1000_phy_hw_reset_generic(hw);
506 if (ret_val)
507 goto out;
508
509 e1000_phy_init_script_82541(hw);
510
511 if ((hw->mac.type == e1000_82541) || (hw->mac.type == e1000_82547)) {
512 /* Configure activity LED after PHY reset */
513 ledctl = E1000_READ_REG(hw, E1000_LEDCTL);
514 ledctl &= IGP_ACTIVITY_LED_MASK;
515 ledctl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
516 E1000_WRITE_REG(hw, E1000_LEDCTL, ledctl);
517 }
518
519out:
520 return ret_val;
521}
522
523/**
524 * e1000_setup_copper_link_82541 - Configure copper link settings
525 * @hw: pointer to the HW structure
526 *
527 * Calls the appropriate function to configure the link for auto-neg or forced
528 * speed and duplex. Then we check for link, once link is established calls
529 * to configure collision distance and flow control are called. If link is
530 * not established, we return -E1000_ERR_PHY (-2).
531 **/
532static s32 e1000_setup_copper_link_82541(struct e1000_hw *hw)
533{
534 struct e1000_phy_info *phy = &hw->phy;
535 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
536 s32 ret_val;
537 u32 ctrl, ledctl;
538
539 DEBUGFUNC("e1000_setup_copper_link_82541");
540
541 ctrl = E1000_READ_REG(hw, E1000_CTRL);
542 ctrl |= E1000_CTRL_SLU;
543 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
544 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
545
546
547 /* Earlier revs of the IGP phy require us to force MDI. */
548 if (hw->mac.type == e1000_82541 || hw->mac.type == e1000_82547) {
549 dev_spec->dsp_config = e1000_dsp_config_disabled;
550 phy->mdix = 1;
551 } else {
552 dev_spec->dsp_config = e1000_dsp_config_enabled;
553 }
554
555 ret_val = e1000_copper_link_setup_igp(hw);
556 if (ret_val)
557 goto out;
558
559 if (hw->mac.autoneg) {
560 if (dev_spec->ffe_config == e1000_ffe_config_active)
561 dev_spec->ffe_config = e1000_ffe_config_enabled;
562 }
563
564 /* Configure activity LED after Phy reset */
565 ledctl = E1000_READ_REG(hw, E1000_LEDCTL);
566 ledctl &= IGP_ACTIVITY_LED_MASK;
567 ledctl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
568 E1000_WRITE_REG(hw, E1000_LEDCTL, ledctl);
569
570 ret_val = e1000_setup_copper_link_generic(hw);
571
572out:
573 return ret_val;
574}
575
576/**
577 * e1000_check_for_link_82541 - Check/Store link connection
578 * @hw: pointer to the HW structure
579 *
580 * This checks the link condition of the adapter and stores the
581 * results in the hw->mac structure.
582 **/
583static s32 e1000_check_for_link_82541(struct e1000_hw *hw)
584{
585 struct e1000_mac_info *mac = &hw->mac;
586 s32 ret_val;
587 bool link;
588
589 DEBUGFUNC("e1000_check_for_link_82541");
590
591 /*
592 * We only want to go out to the PHY registers to see if Auto-Neg
593 * has completed and/or if our link status has changed. The
594 * get_link_status flag is set upon receiving a Link Status
595 * Change or Rx Sequence Error interrupt.
596 */
597 if (!mac->get_link_status) {
598 ret_val = E1000_SUCCESS;
599 goto out;
600 }
601
602 /*
603 * First we want to see if the MII Status Register reports
604 * link. If so, then we want to get the current speed/duplex
605 * of the PHY.
606 */
607 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
608 if (ret_val)
609 goto out;
610
611 if (!link) {
612 ret_val = e1000_config_dsp_after_link_change_82541(hw, FALSE);
613 goto out; /* No link detected */
614 }
615
616 mac->get_link_status = FALSE;
617
618 /*
619 * Check if there was DownShift, must be checked
620 * immediately after link-up
621 */
622 e1000_check_downshift_generic(hw);
623
624 /*
625 * If we are forcing speed/duplex, then we simply return since
626 * we have already determined whether we have link or not.
627 */
628 if (!mac->autoneg) {
629 ret_val = -E1000_ERR_CONFIG;
630 goto out;
631 }
632
633 ret_val = e1000_config_dsp_after_link_change_82541(hw, TRUE);
634
635 /*
636 * Auto-Neg is enabled. Auto Speed Detection takes care
637 * of MAC speed/duplex configuration. So we only need to
638 * configure Collision Distance in the MAC.
639 */
640 mac->ops.config_collision_dist(hw);
641
642 /*
643 * Configure Flow Control now that Auto-Neg has completed.
644 * First, we need to restore the desired flow control
645 * settings because we may have had to re-autoneg with a
646 * different link partner.
647 */
648 ret_val = e1000_config_fc_after_link_up_generic(hw);
649 if (ret_val)
650 DEBUGOUT("Error configuring flow control\n");
651
652out:
653 return ret_val;
654}
655
656/**
657 * e1000_config_dsp_after_link_change_82541 - Config DSP after link
658 * @hw: pointer to the HW structure
659 * @link_up: boolean flag for link up status
660 *
661 * Return E1000_ERR_PHY when failing to read/write the PHY, else E1000_SUCCESS
662 * at any other case.
663 *
664 * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a
665 * gigabit link is achieved to improve link quality.
666 **/
667static s32 e1000_config_dsp_after_link_change_82541(struct e1000_hw *hw,
668 bool link_up)
669{
670 struct e1000_phy_info *phy = &hw->phy;
671 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
672 s32 ret_val;
673 u32 idle_errs = 0;
674 u16 phy_data, phy_saved_data, speed, duplex, i;
675 u16 ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20;
676 u16 dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = {
677 IGP01E1000_PHY_AGC_PARAM_A,
678 IGP01E1000_PHY_AGC_PARAM_B,
679 IGP01E1000_PHY_AGC_PARAM_C,
680 IGP01E1000_PHY_AGC_PARAM_D};
681
682 DEBUGFUNC("e1000_config_dsp_after_link_change_82541");
683
684 if (link_up) {
685 ret_val = hw->mac.ops.get_link_up_info(hw, &speed, &duplex);
686 if (ret_val) {
687 DEBUGOUT("Error getting link speed and duplex\n");
688 goto out;
689 }
690
691 if (speed != SPEED_1000) {
692 ret_val = E1000_SUCCESS;
693 goto out;
694 }
695
696 ret_val = phy->ops.get_cable_length(hw);
697 if (ret_val)
698 goto out;
699
700 if ((dev_spec->dsp_config == e1000_dsp_config_enabled) &&
701 phy->min_cable_length >= 50) {
702
703 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
704 ret_val = phy->ops.read_reg(hw,
705 dsp_reg_array[i],
706 &phy_data);
707 if (ret_val)
708 goto out;
709
710 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
711
712 ret_val = phy->ops.write_reg(hw,
713 dsp_reg_array[i],
714 phy_data);
715 if (ret_val)
716 goto out;
717 }
718 dev_spec->dsp_config = e1000_dsp_config_activated;
719 }
720
721 if ((dev_spec->ffe_config != e1000_ffe_config_enabled) ||
722 (phy->min_cable_length >= 50)) {
723 ret_val = E1000_SUCCESS;
724 goto out;
725 }
726
727 /* clear previous idle error counts */
728 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &phy_data);
729 if (ret_val)
730 goto out;
731
732 for (i = 0; i < ffe_idle_err_timeout; i++) {
733 usec_delay(1000);
734 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS,
735 &phy_data);
736 if (ret_val)
737 goto out;
738
739 idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT);
740 if (idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) {
741 dev_spec->ffe_config = e1000_ffe_config_active;
742
743 ret_val = phy->ops.write_reg(hw,
744 IGP01E1000_PHY_DSP_FFE,
745 IGP01E1000_PHY_DSP_FFE_CM_CP);
746 if (ret_val)
747 goto out;
748 break;
749 }
750
751 if (idle_errs)
752 ffe_idle_err_timeout =
753 FFE_IDLE_ERR_COUNT_TIMEOUT_100;
754 }
755 } else {
756 if (dev_spec->dsp_config == e1000_dsp_config_activated) {
757 /*
758 * Save off the current value of register 0x2F5B
759 * to be restored at the end of the routines.
760 */
761 ret_val = phy->ops.read_reg(hw, 0x2F5B,
762 &phy_saved_data);
763 if (ret_val)
764 goto out;
765
766 /* Disable the PHY transmitter */
767 ret_val = phy->ops.write_reg(hw, 0x2F5B, 0x0003);
768 if (ret_val)
769 goto out;
770
771 msec_delay_irq(20);
772
773 ret_val = phy->ops.write_reg(hw, 0x0000,
774 IGP01E1000_IEEE_FORCE_GIG);
775 if (ret_val)
776 goto out;
777 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
778 ret_val = phy->ops.read_reg(hw,
779 dsp_reg_array[i],
780 &phy_data);
781 if (ret_val)
782 goto out;
783
784 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
785 phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS;
786
787 ret_val = phy->ops.write_reg(hw,
788 dsp_reg_array[i],
789 phy_data);
790 if (ret_val)
791 goto out;
792 }
793
794 ret_val = phy->ops.write_reg(hw, 0x0000,
795 IGP01E1000_IEEE_RESTART_AUTONEG);
796 if (ret_val)
797 goto out;
798
799 msec_delay_irq(20);
800
801 /* Now enable the transmitter */
802 ret_val = phy->ops.write_reg(hw, 0x2F5B,
803 phy_saved_data);
804 if (ret_val)
805 goto out;
806
807 dev_spec->dsp_config = e1000_dsp_config_enabled;
808 }
809
810 if (dev_spec->ffe_config != e1000_ffe_config_active) {
811 ret_val = E1000_SUCCESS;
812 goto out;
813 }
814
815 /*
816 * Save off the current value of register 0x2F5B
817 * to be restored at the end of the routines.
818 */
819 ret_val = phy->ops.read_reg(hw, 0x2F5B, &phy_saved_data);
820 if (ret_val)
821 goto out;
822
823 /* Disable the PHY transmitter */
824 ret_val = phy->ops.write_reg(hw, 0x2F5B, 0x0003);
825 if (ret_val)
826 goto out;
827
828 msec_delay_irq(20);
829
830 ret_val = phy->ops.write_reg(hw, 0x0000,
831 IGP01E1000_IEEE_FORCE_GIG);
832 if (ret_val)
833 goto out;
834
835 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_DSP_FFE,
836 IGP01E1000_PHY_DSP_FFE_DEFAULT);
837 if (ret_val)
838 goto out;
839
840 ret_val = phy->ops.write_reg(hw, 0x0000,
841 IGP01E1000_IEEE_RESTART_AUTONEG);
842 if (ret_val)
843 goto out;
844
845 msec_delay_irq(20);
846
847 /* Now enable the transmitter */
848 ret_val = phy->ops.write_reg(hw, 0x2F5B, phy_saved_data);
849
850 if (ret_val)
851 goto out;
852
853 dev_spec->ffe_config = e1000_ffe_config_enabled;
854 }
855
856out:
857 return ret_val;
858}
859
860/**
861 * e1000_get_cable_length_igp_82541 - Determine cable length for igp PHY
862 * @hw: pointer to the HW structure
863 *
864 * The automatic gain control (agc) normalizes the amplitude of the
865 * received signal, adjusting for the attenuation produced by the
866 * cable. By reading the AGC registers, which represent the
867 * combination of coarse and fine gain value, the value can be put
868 * into a lookup table to obtain the approximate cable length
869 * for each channel.
870 **/
871static s32 e1000_get_cable_length_igp_82541(struct e1000_hw *hw)
872{
873 struct e1000_phy_info *phy = &hw->phy;
874 s32 ret_val = E1000_SUCCESS;
875 u16 i, data;
876 u16 cur_agc_value, agc_value = 0;
877 u16 min_agc_value = IGP01E1000_AGC_LENGTH_TABLE_SIZE;
878 u16 agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = {IGP01E1000_PHY_AGC_A,
879 IGP01E1000_PHY_AGC_B,
880 IGP01E1000_PHY_AGC_C,
881 IGP01E1000_PHY_AGC_D};
882
883 DEBUGFUNC("e1000_get_cable_length_igp_82541");
884
885 /* Read the AGC registers for all channels */
886 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
887 ret_val = phy->ops.read_reg(hw, agc_reg_array[i], &data);
888 if (ret_val)
889 goto out;
890
891 cur_agc_value = data >> IGP01E1000_AGC_LENGTH_SHIFT;
892
893 /* Bounds checking */
894 if ((cur_agc_value >= IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) ||
895 (cur_agc_value == 0)) {
896 ret_val = -E1000_ERR_PHY;
897 goto out;
898 }
899
900 agc_value += cur_agc_value;
901
902 if (min_agc_value > cur_agc_value)
903 min_agc_value = cur_agc_value;
904 }
905
906 /* Remove the minimal AGC result for length < 50m */
907 if (agc_value < IGP01E1000_PHY_CHANNEL_NUM * 50) {
908 agc_value -= min_agc_value;
909 /* Average the three remaining channels for the length. */
910 agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1);
911 } else {
912 /* Average the channels for the length. */
913 agc_value /= IGP01E1000_PHY_CHANNEL_NUM;
914 }
915
916 phy->min_cable_length = (e1000_igp_cable_length_table[agc_value] >
917 IGP01E1000_AGC_RANGE)
918 ? (e1000_igp_cable_length_table[agc_value] -
919 IGP01E1000_AGC_RANGE)
920 : 0;
921 phy->max_cable_length = e1000_igp_cable_length_table[agc_value] +
922 IGP01E1000_AGC_RANGE;
923
924 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
925
926out:
927 return ret_val;
928}
929
930/**
931 * e1000_set_d3_lplu_state_82541 - Sets low power link up state for D3
932 * @hw: pointer to the HW structure
933 * @active: boolean used to enable/disable lplu
934 *
935 * Success returns 0, Failure returns 1
936 *
937 * The low power link up (lplu) state is set to the power management level D3
938 * and SmartSpeed is disabled when active is TRUE, else clear lplu for D3
939 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
940 * is used during Dx states where the power conservation is most important.
941 * During driver activity, SmartSpeed should be enabled so performance is
942 * maintained.
943 **/
944static s32 e1000_set_d3_lplu_state_82541(struct e1000_hw *hw, bool active)
945{
946 struct e1000_phy_info *phy = &hw->phy;
947 s32 ret_val;
948 u16 data;
949
950 DEBUGFUNC("e1000_set_d3_lplu_state_82541");
951
952 switch (hw->mac.type) {
953 case e1000_82541_rev_2:
954 case e1000_82547_rev_2:
955 break;
956 default:
957 ret_val = e1000_set_d3_lplu_state_generic(hw, active);
958 goto out;
959 break;
960 }
961
962 ret_val = phy->ops.read_reg(hw, IGP01E1000_GMII_FIFO, &data);
963 if (ret_val)
964 goto out;
965
966 if (!active) {
967 data &= ~IGP01E1000_GMII_FLEX_SPD;
968 ret_val = phy->ops.write_reg(hw, IGP01E1000_GMII_FIFO, data);
969 if (ret_val)
970 goto out;
971
972 /*
973 * LPLU and SmartSpeed are mutually exclusive. LPLU is used
974 * during Dx states where the power conservation is most
975 * important. During driver activity we should enable
976 * SmartSpeed, so performance is maintained.
977 */
978 if (phy->smart_speed == e1000_smart_speed_on) {
979 ret_val = phy->ops.read_reg(hw,
980 IGP01E1000_PHY_PORT_CONFIG,
981 &data);
982 if (ret_val)
983 goto out;
984
985 data |= IGP01E1000_PSCFR_SMART_SPEED;
986 ret_val = phy->ops.write_reg(hw,
987 IGP01E1000_PHY_PORT_CONFIG,
988 data);
989 if (ret_val)
990 goto out;
991 } else if (phy->smart_speed == e1000_smart_speed_off) {
992 ret_val = phy->ops.read_reg(hw,
993 IGP01E1000_PHY_PORT_CONFIG,
994 &data);
995 if (ret_val)
996 goto out;
997
998 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
999 ret_val = phy->ops.write_reg(hw,
1000 IGP01E1000_PHY_PORT_CONFIG,
1001 data);
1002 if (ret_val)
1003 goto out;
1004 }
1005 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1006 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1007 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1008 data |= IGP01E1000_GMII_FLEX_SPD;
1009 ret_val = phy->ops.write_reg(hw, IGP01E1000_GMII_FIFO, data);
1010 if (ret_val)
1011 goto out;
1012
1013 /* When LPLU is enabled, we should disable SmartSpeed */
1014 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1015 &data);
1016 if (ret_val)
1017 goto out;
1018
1019 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1020 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1021 data);
1022 }
1023
1024out:
1025 return ret_val;
1026}
1027
1028/**
1029 * e1000_setup_led_82541 - Configures SW controllable LED
1030 * @hw: pointer to the HW structure
1031 *
1032 * This prepares the SW controllable LED for use and saves the current state
1033 * of the LED so it can be later restored.
1034 **/
1035static s32 e1000_setup_led_82541(struct e1000_hw *hw)
1036{
1037 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1038 s32 ret_val;
1039
1040 DEBUGFUNC("e1000_setup_led_82541");
1041
1042 ret_val = hw->phy.ops.read_reg(hw, IGP01E1000_GMII_FIFO,
1043 &dev_spec->spd_default);
1044 if (ret_val)
1045 goto out;
1046
1047 ret_val = hw->phy.ops.write_reg(hw, IGP01E1000_GMII_FIFO,
1048 (u16)(dev_spec->spd_default &
1049 ~IGP01E1000_GMII_SPD));
1050 if (ret_val)
1051 goto out;
1052
1053 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_mode1);
1054
1055out:
1056 return ret_val;
1057}
1058
1059/**
1060 * e1000_cleanup_led_82541 - Set LED config to default operation
1061 * @hw: pointer to the HW structure
1062 *
1063 * Remove the current LED configuration and set the LED configuration
1064 * to the default value, saved from the EEPROM.
1065 **/
1066static s32 e1000_cleanup_led_82541(struct e1000_hw *hw)
1067{
1068 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1069 s32 ret_val;
1070
1071 DEBUGFUNC("e1000_cleanup_led_82541");
1072
1073 ret_val = hw->phy.ops.write_reg(hw, IGP01E1000_GMII_FIFO,
1074 dev_spec->spd_default);
1075 if (ret_val)
1076 goto out;
1077
1078 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_default);
1079
1080out:
1081 return ret_val;
1082}
1083
1084/**
1085 * e1000_phy_init_script_82541 - Initialize GbE PHY
1086 * @hw: pointer to the HW structure
1087 *
1088 * Initializes the IGP PHY.
1089 **/
1090static s32 e1000_phy_init_script_82541(struct e1000_hw *hw)
1091{
1092 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1093 u32 ret_val;
1094 u16 phy_saved_data;
1095
1096 DEBUGFUNC("e1000_phy_init_script_82541");
1097
1098 if (!dev_spec->phy_init_script) {
1099 ret_val = E1000_SUCCESS;
1100 goto out;
1101 }
1102
1103 /* Delay after phy reset to enable NVM configuration to load */
1104 msec_delay(20);
1105
1106 /*
1107 * Save off the current value of register 0x2F5B to be restored at
1108 * the end of this routine.
1109 */
1110 ret_val = hw->phy.ops.read_reg(hw, 0x2F5B, &phy_saved_data);
1111
1112 /* Disabled the PHY transmitter */
1113 hw->phy.ops.write_reg(hw, 0x2F5B, 0x0003);
1114
1115 msec_delay(20);
1116
1117 hw->phy.ops.write_reg(hw, 0x0000, 0x0140);
1118
1119 msec_delay(5);
1120
1121 switch (hw->mac.type) {
1122 case e1000_82541:
1123 case e1000_82547:
1124 hw->phy.ops.write_reg(hw, 0x1F95, 0x0001);
1125
1126 hw->phy.ops.write_reg(hw, 0x1F71, 0xBD21);
1127
1128 hw->phy.ops.write_reg(hw, 0x1F79, 0x0018);
1129
1130 hw->phy.ops.write_reg(hw, 0x1F30, 0x1600);
1131
1132 hw->phy.ops.write_reg(hw, 0x1F31, 0x0014);
1133
1134 hw->phy.ops.write_reg(hw, 0x1F32, 0x161C);
1135
1136 hw->phy.ops.write_reg(hw, 0x1F94, 0x0003);
1137
1138 hw->phy.ops.write_reg(hw, 0x1F96, 0x003F);
1139
1140 hw->phy.ops.write_reg(hw, 0x2010, 0x0008);
1141 break;
1142 case e1000_82541_rev_2:
1143 case e1000_82547_rev_2:
1144 hw->phy.ops.write_reg(hw, 0x1F73, 0x0099);
1145 break;
1146 default:
1147 break;
1148 }
1149
1150 hw->phy.ops.write_reg(hw, 0x0000, 0x3300);
1151
1152 msec_delay(20);
1153
1154 /* Now enable the transmitter */
1155 hw->phy.ops.write_reg(hw, 0x2F5B, phy_saved_data);
1156
1157 if (hw->mac.type == e1000_82547) {
1158 u16 fused, fine, coarse;
1159
1160 /* Move to analog registers page */
1161 hw->phy.ops.read_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS,
1162 &fused);
1163
1164 if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
1165 hw->phy.ops.read_reg(hw, IGP01E1000_ANALOG_FUSE_STATUS,
1166 &fused);
1167
1168 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
1169 coarse = fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
1170
1171 if (coarse > IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
1172 coarse -= IGP01E1000_ANALOG_FUSE_COARSE_10;
1173 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
1174 } else if (coarse ==
1175 IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
1176 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
1177
1178 fused = (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
1179 (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
1180 (coarse & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
1181
1182 hw->phy.ops.write_reg(hw,
1183 IGP01E1000_ANALOG_FUSE_CONTROL,
1184 fused);
1185 hw->phy.ops.write_reg(hw,
1186 IGP01E1000_ANALOG_FUSE_BYPASS,
1187 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
1188 }
1189 }
1190
1191out:
1192 return ret_val;
1193}
1194
1195/**
1196 * e1000_init_script_state_82541 - Enable/Disable PHY init script
1197 * @hw: pointer to the HW structure
1198 * @state: boolean value used to enable/disable PHY init script
1199 *
1200 * Allows the driver to enable/disable the PHY init script, if the PHY is an
1201 * IGP PHY.
1202 **/
1203void e1000_init_script_state_82541(struct e1000_hw *hw, bool state)
1204{
1205 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1206
1207 DEBUGFUNC("e1000_init_script_state_82541");
1208
1209 if (hw->phy.type != e1000_phy_igp) {
1210 DEBUGOUT("Initialization script not necessary.\n");
1211 goto out;
1212 }
1213
1214 dev_spec->phy_init_script = state;
1215
1216out:
1217 return;
1218}
1219
1220/**
1221 * e1000_power_down_phy_copper_82541 - Remove link in case of PHY power down
1222 * @hw: pointer to the HW structure
1223 *
1224 * In the case of a PHY power down to save power, or to turn off link during a
1225 * driver unload, or wake on lan is not enabled, remove the link.
1226 **/
1227static void e1000_power_down_phy_copper_82541(struct e1000_hw *hw)
1228{
1229 /* If the management interface is not enabled, then power down */
1230 if (!(E1000_READ_REG(hw, E1000_MANC) & E1000_MANC_SMBUS_EN))
1231 e1000_power_down_phy_copper(hw);
1232
1233 return;
1234}
1235
1236/**
1237 * e1000_clear_hw_cntrs_82541 - Clear device specific hardware counters
1238 * @hw: pointer to the HW structure
1239 *
1240 * Clears the hardware counters by reading the counter registers.
1241 **/
1242static void e1000_clear_hw_cntrs_82541(struct e1000_hw *hw)
1243{
1244 DEBUGFUNC("e1000_clear_hw_cntrs_82541");
1245
1246 e1000_clear_hw_cntrs_base_generic(hw);
1247
1248 E1000_READ_REG(hw, E1000_PRC64);
1249 E1000_READ_REG(hw, E1000_PRC127);
1250 E1000_READ_REG(hw, E1000_PRC255);
1251 E1000_READ_REG(hw, E1000_PRC511);
1252 E1000_READ_REG(hw, E1000_PRC1023);
1253 E1000_READ_REG(hw, E1000_PRC1522);
1254 E1000_READ_REG(hw, E1000_PTC64);
1255 E1000_READ_REG(hw, E1000_PTC127);
1256 E1000_READ_REG(hw, E1000_PTC255);
1257 E1000_READ_REG(hw, E1000_PTC511);
1258 E1000_READ_REG(hw, E1000_PTC1023);
1259 E1000_READ_REG(hw, E1000_PTC1522);
1260
1261 E1000_READ_REG(hw, E1000_ALGNERRC);
1262 E1000_READ_REG(hw, E1000_RXERRC);
1263 E1000_READ_REG(hw, E1000_TNCRS);
1264 E1000_READ_REG(hw, E1000_CEXTERR);
1265 E1000_READ_REG(hw, E1000_TSCTC);
1266 E1000_READ_REG(hw, E1000_TSCTFC);
1267
1268 E1000_READ_REG(hw, E1000_MGTPRC);
1269 E1000_READ_REG(hw, E1000_MGTPDC);
1270 E1000_READ_REG(hw, E1000_MGTPTC);
1271}
1272
1273/**
1274 * e1000_read_mac_addr_82541 - Read device MAC address
1275 * @hw: pointer to the HW structure
1276 *
1277 * Reads the device MAC address from the EEPROM and stores the value.
1278 **/
1279static s32 e1000_read_mac_addr_82541(struct e1000_hw *hw)
1280{
1281 s32 ret_val = E1000_SUCCESS;
1282 u16 offset, nvm_data, i;
1283
1284 DEBUGFUNC("e1000_read_mac_addr");
1285
1286 for (i = 0; i < ETH_ADDR_LEN; i += 2) {
1287 offset = i >> 1;
1288 ret_val = hw->nvm.ops.read(hw, offset, 1, &nvm_data);
1289 if (ret_val) {
1290 DEBUGOUT("NVM Read Error\n");
1291 goto out;
1292 }
1293 hw->mac.perm_addr[i] = (u8)(nvm_data & 0xFF);
1294 hw->mac.perm_addr[i+1] = (u8)(nvm_data >> 8);
1295 }
1296
1297 for (i = 0; i < ETH_ADDR_LEN; i++)
1298 hw->mac.addr[i] = hw->mac.perm_addr[i];
1299
1300out:
1301 return ret_val;
1302}
1303
2
3 Copyright (c) 2001-2015, Intel Corporation
4 All rights reserved.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
11
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
15
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
31
32******************************************************************************/
33/*$FreeBSD: head/sys/dev/e1000/e1000_82541.c 287990 2015-09-19 18:22:59Z sbruno $*/
34
35/*
36 * 82541EI Gigabit Ethernet Controller
37 * 82541ER Gigabit Ethernet Controller
38 * 82541GI Gigabit Ethernet Controller
39 * 82541PI Gigabit Ethernet Controller
40 * 82547EI Gigabit Ethernet Controller
41 * 82547GI Gigabit Ethernet Controller
42 */
43
44#include "e1000_api.h"
45
46static s32 e1000_init_phy_params_82541(struct e1000_hw *hw);
47static s32 e1000_init_nvm_params_82541(struct e1000_hw *hw);
48static s32 e1000_init_mac_params_82541(struct e1000_hw *hw);
49static s32 e1000_reset_hw_82541(struct e1000_hw *hw);
50static s32 e1000_init_hw_82541(struct e1000_hw *hw);
51static s32 e1000_get_link_up_info_82541(struct e1000_hw *hw, u16 *speed,
52 u16 *duplex);
53static s32 e1000_phy_hw_reset_82541(struct e1000_hw *hw);
54static s32 e1000_setup_copper_link_82541(struct e1000_hw *hw);
55static s32 e1000_check_for_link_82541(struct e1000_hw *hw);
56static s32 e1000_get_cable_length_igp_82541(struct e1000_hw *hw);
57static s32 e1000_set_d3_lplu_state_82541(struct e1000_hw *hw,
58 bool active);
59static s32 e1000_setup_led_82541(struct e1000_hw *hw);
60static s32 e1000_cleanup_led_82541(struct e1000_hw *hw);
61static void e1000_clear_hw_cntrs_82541(struct e1000_hw *hw);
62static s32 e1000_read_mac_addr_82541(struct e1000_hw *hw);
63static s32 e1000_config_dsp_after_link_change_82541(struct e1000_hw *hw,
64 bool link_up);
65static s32 e1000_phy_init_script_82541(struct e1000_hw *hw);
66static void e1000_power_down_phy_copper_82541(struct e1000_hw *hw);
67
68static const u16 e1000_igp_cable_length_table[] = {
69 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10,
70 10, 10, 20, 20, 20, 20, 20, 25, 25, 25, 25, 25, 25, 25, 30, 30, 30, 30,
71 40, 40, 40, 40, 40, 40, 40, 40, 40, 50, 50, 50, 50, 50, 50, 50, 60, 60,
72 60, 60, 60, 60, 60, 60, 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80,
73 80, 90, 90, 90, 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100,
74 100, 100, 100, 100, 100, 100, 100, 100, 110, 110, 110, 110, 110, 110,
75 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 120, 120,
76 120, 120, 120, 120, 120, 120, 120, 120};
77#define IGP01E1000_AGC_LENGTH_TABLE_SIZE \
78 (sizeof(e1000_igp_cable_length_table) / \
79 sizeof(e1000_igp_cable_length_table[0]))
80
81/**
82 * e1000_init_phy_params_82541 - Init PHY func ptrs.
83 * @hw: pointer to the HW structure
84 **/
85static s32 e1000_init_phy_params_82541(struct e1000_hw *hw)
86{
87 struct e1000_phy_info *phy = &hw->phy;
88 s32 ret_val = E1000_SUCCESS;
89
90 DEBUGFUNC("e1000_init_phy_params_82541");
91
92 phy->addr = 1;
93 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
94 phy->reset_delay_us = 10000;
95 phy->type = e1000_phy_igp;
96
97 /* Function Pointers */
98 phy->ops.check_polarity = e1000_check_polarity_igp;
99 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
100 phy->ops.get_cable_length = e1000_get_cable_length_igp_82541;
101 phy->ops.get_cfg_done = e1000_get_cfg_done_generic;
102 phy->ops.get_info = e1000_get_phy_info_igp;
103 phy->ops.read_reg = e1000_read_phy_reg_igp;
104 phy->ops.reset = e1000_phy_hw_reset_82541;
105 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82541;
106 phy->ops.write_reg = e1000_write_phy_reg_igp;
107 phy->ops.power_up = e1000_power_up_phy_copper;
108 phy->ops.power_down = e1000_power_down_phy_copper_82541;
109
110 ret_val = e1000_get_phy_id(hw);
111 if (ret_val)
112 goto out;
113
114 /* Verify phy id */
115 if (phy->id != IGP01E1000_I_PHY_ID) {
116 ret_val = -E1000_ERR_PHY;
117 goto out;
118 }
119
120out:
121 return ret_val;
122}
123
124/**
125 * e1000_init_nvm_params_82541 - Init NVM func ptrs.
126 * @hw: pointer to the HW structure
127 **/
128static s32 e1000_init_nvm_params_82541(struct e1000_hw *hw)
129{
130 struct e1000_nvm_info *nvm = &hw->nvm;
131 s32 ret_val = E1000_SUCCESS;
132 u32 eecd = E1000_READ_REG(hw, E1000_EECD);
133 u16 size;
134
135 DEBUGFUNC("e1000_init_nvm_params_82541");
136
137 switch (nvm->override) {
138 case e1000_nvm_override_spi_large:
139 nvm->type = e1000_nvm_eeprom_spi;
140 eecd |= E1000_EECD_ADDR_BITS;
141 break;
142 case e1000_nvm_override_spi_small:
143 nvm->type = e1000_nvm_eeprom_spi;
144 eecd &= ~E1000_EECD_ADDR_BITS;
145 break;
146 case e1000_nvm_override_microwire_large:
147 nvm->type = e1000_nvm_eeprom_microwire;
148 eecd |= E1000_EECD_SIZE;
149 break;
150 case e1000_nvm_override_microwire_small:
151 nvm->type = e1000_nvm_eeprom_microwire;
152 eecd &= ~E1000_EECD_SIZE;
153 break;
154 default:
155 nvm->type = eecd & E1000_EECD_TYPE ? e1000_nvm_eeprom_spi
156 : e1000_nvm_eeprom_microwire;
157 break;
158 }
159
160 if (nvm->type == e1000_nvm_eeprom_spi) {
161 nvm->address_bits = (eecd & E1000_EECD_ADDR_BITS) ? 16 : 8;
162 nvm->delay_usec = 1;
163 nvm->opcode_bits = 8;
164 nvm->page_size = (eecd & E1000_EECD_ADDR_BITS) ? 32 : 8;
165
166 /* Function Pointers */
167 nvm->ops.acquire = e1000_acquire_nvm_generic;
168 nvm->ops.read = e1000_read_nvm_spi;
169 nvm->ops.release = e1000_release_nvm_generic;
170 nvm->ops.update = e1000_update_nvm_checksum_generic;
171 nvm->ops.valid_led_default = e1000_valid_led_default_generic;
172 nvm->ops.validate = e1000_validate_nvm_checksum_generic;
173 nvm->ops.write = e1000_write_nvm_spi;
174
175 /*
176 * nvm->word_size must be discovered after the pointers
177 * are set so we can verify the size from the nvm image
178 * itself. Temporarily set it to a dummy value so the
179 * read will work.
180 */
181 nvm->word_size = 64;
182 ret_val = nvm->ops.read(hw, NVM_CFG, 1, &size);
183 if (ret_val)
184 goto out;
185 size = (size & NVM_SIZE_MASK) >> NVM_SIZE_SHIFT;
186 /*
187 * if size != 0, it can be added to a constant and become
188 * the left-shift value to set the word_size. Otherwise,
189 * word_size stays at 64.
190 */
191 if (size) {
192 size += NVM_WORD_SIZE_BASE_SHIFT_82541;
193 nvm->word_size = 1 << size;
194 }
195 } else {
196 nvm->address_bits = (eecd & E1000_EECD_ADDR_BITS) ? 8 : 6;
197 nvm->delay_usec = 50;
198 nvm->opcode_bits = 3;
199 nvm->word_size = (eecd & E1000_EECD_ADDR_BITS) ? 256 : 64;
200
201 /* Function Pointers */
202 nvm->ops.acquire = e1000_acquire_nvm_generic;
203 nvm->ops.read = e1000_read_nvm_microwire;
204 nvm->ops.release = e1000_release_nvm_generic;
205 nvm->ops.update = e1000_update_nvm_checksum_generic;
206 nvm->ops.valid_led_default = e1000_valid_led_default_generic;
207 nvm->ops.validate = e1000_validate_nvm_checksum_generic;
208 nvm->ops.write = e1000_write_nvm_microwire;
209 }
210
211out:
212 return ret_val;
213}
214
215/**
216 * e1000_init_mac_params_82541 - Init MAC func ptrs.
217 * @hw: pointer to the HW structure
218 **/
219static s32 e1000_init_mac_params_82541(struct e1000_hw *hw)
220{
221 struct e1000_mac_info *mac = &hw->mac;
222
223 DEBUGFUNC("e1000_init_mac_params_82541");
224
225 /* Set media type */
226 hw->phy.media_type = e1000_media_type_copper;
227 /* Set mta register count */
228 mac->mta_reg_count = 128;
229 /* Set rar entry count */
230 mac->rar_entry_count = E1000_RAR_ENTRIES;
231 /* Set if part includes ASF firmware */
232 mac->asf_firmware_present = TRUE;
233
234 /* Function Pointers */
235
236 /* bus type/speed/width */
237 mac->ops.get_bus_info = e1000_get_bus_info_pci_generic;
238 /* function id */
239 mac->ops.set_lan_id = e1000_set_lan_id_single_port;
240 /* reset */
241 mac->ops.reset_hw = e1000_reset_hw_82541;
242 /* hw initialization */
243 mac->ops.init_hw = e1000_init_hw_82541;
244 /* link setup */
245 mac->ops.setup_link = e1000_setup_link_generic;
246 /* physical interface link setup */
247 mac->ops.setup_physical_interface = e1000_setup_copper_link_82541;
248 /* check for link */
249 mac->ops.check_for_link = e1000_check_for_link_82541;
250 /* link info */
251 mac->ops.get_link_up_info = e1000_get_link_up_info_82541;
252 /* multicast address update */
253 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic;
254 /* writing VFTA */
255 mac->ops.write_vfta = e1000_write_vfta_generic;
256 /* clearing VFTA */
257 mac->ops.clear_vfta = e1000_clear_vfta_generic;
258 /* read mac address */
259 mac->ops.read_mac_addr = e1000_read_mac_addr_82541;
260 /* ID LED init */
261 mac->ops.id_led_init = e1000_id_led_init_generic;
262 /* setup LED */
263 mac->ops.setup_led = e1000_setup_led_82541;
264 /* cleanup LED */
265 mac->ops.cleanup_led = e1000_cleanup_led_82541;
266 /* turn on/off LED */
267 mac->ops.led_on = e1000_led_on_generic;
268 mac->ops.led_off = e1000_led_off_generic;
269 /* clear hardware counters */
270 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_82541;
271
272 return E1000_SUCCESS;
273}
274
275/**
276 * e1000_init_function_pointers_82541 - Init func ptrs.
277 * @hw: pointer to the HW structure
278 *
279 * Called to initialize all function pointers and parameters.
280 **/
281void e1000_init_function_pointers_82541(struct e1000_hw *hw)
282{
283 DEBUGFUNC("e1000_init_function_pointers_82541");
284
285 hw->mac.ops.init_params = e1000_init_mac_params_82541;
286 hw->nvm.ops.init_params = e1000_init_nvm_params_82541;
287 hw->phy.ops.init_params = e1000_init_phy_params_82541;
288}
289
290/**
291 * e1000_reset_hw_82541 - Reset hardware
292 * @hw: pointer to the HW structure
293 *
294 * This resets the hardware into a known state.
295 **/
296static s32 e1000_reset_hw_82541(struct e1000_hw *hw)
297{
298 u32 ledctl, ctrl, icr, manc;
299
300 DEBUGFUNC("e1000_reset_hw_82541");
301
302 DEBUGOUT("Masking off all interrupts\n");
303 E1000_WRITE_REG(hw, E1000_IMC, 0xFFFFFFFF);
304
305 E1000_WRITE_REG(hw, E1000_RCTL, 0);
306 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
307 E1000_WRITE_FLUSH(hw);
308
309 /*
310 * Delay to allow any outstanding PCI transactions to complete
311 * before resetting the device.
312 */
313 msec_delay(10);
314
315 ctrl = E1000_READ_REG(hw, E1000_CTRL);
316
317 /* Must reset the Phy before resetting the MAC */
318 if ((hw->mac.type == e1000_82541) || (hw->mac.type == e1000_82547)) {
319 E1000_WRITE_REG(hw, E1000_CTRL, (ctrl | E1000_CTRL_PHY_RST));
320 msec_delay(5);
321 }
322
323 DEBUGOUT("Issuing a global reset to 82541/82547 MAC\n");
324 switch (hw->mac.type) {
325 case e1000_82541:
326 case e1000_82541_rev_2:
327 /*
328 * These controllers can't ack the 64-bit write when
329 * issuing the reset, so we use IO-mapping as a
330 * workaround to issue the reset.
331 */
332 E1000_WRITE_REG_IO(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
333 break;
334 default:
335 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
336 break;
337 }
338
339 /* Wait for NVM reload */
340 msec_delay(20);
341
342 /* Disable HW ARPs on ASF enabled adapters */
343 manc = E1000_READ_REG(hw, E1000_MANC);
344 manc &= ~E1000_MANC_ARP_EN;
345 E1000_WRITE_REG(hw, E1000_MANC, manc);
346
347 if ((hw->mac.type == e1000_82541) || (hw->mac.type == e1000_82547)) {
348 e1000_phy_init_script_82541(hw);
349
350 /* Configure activity LED after Phy reset */
351 ledctl = E1000_READ_REG(hw, E1000_LEDCTL);
352 ledctl &= IGP_ACTIVITY_LED_MASK;
353 ledctl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
354 E1000_WRITE_REG(hw, E1000_LEDCTL, ledctl);
355 }
356
357 /* Once again, mask the interrupts */
358 DEBUGOUT("Masking off all interrupts\n");
359 E1000_WRITE_REG(hw, E1000_IMC, 0xFFFFFFFF);
360
361 /* Clear any pending interrupt events. */
362 icr = E1000_READ_REG(hw, E1000_ICR);
363
364 return E1000_SUCCESS;
365}
366
367/**
368 * e1000_init_hw_82541 - Initialize hardware
369 * @hw: pointer to the HW structure
370 *
371 * This inits the hardware readying it for operation.
372 **/
373static s32 e1000_init_hw_82541(struct e1000_hw *hw)
374{
375 struct e1000_mac_info *mac = &hw->mac;
376 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
377 u32 i, txdctl;
378 s32 ret_val;
379
380 DEBUGFUNC("e1000_init_hw_82541");
381
382 /* Initialize identification LED */
383 ret_val = mac->ops.id_led_init(hw);
384 if (ret_val) {
385 DEBUGOUT("Error initializing identification LED\n");
386 /* This is not fatal and we should not stop init due to this */
387 }
388
389 /* Storing the Speed Power Down value for later use */
390 ret_val = hw->phy.ops.read_reg(hw, IGP01E1000_GMII_FIFO,
391 &dev_spec->spd_default);
392 if (ret_val)
393 goto out;
394
395 /* Disabling VLAN filtering */
396 DEBUGOUT("Initializing the IEEE VLAN\n");
397 mac->ops.clear_vfta(hw);
398
399 /* Setup the receive address. */
400 e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
401
402 /* Zero out the Multicast HASH table */
403 DEBUGOUT("Zeroing the MTA\n");
404 for (i = 0; i < mac->mta_reg_count; i++) {
405 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
406 /*
407 * Avoid back to back register writes by adding the register
408 * read (flush). This is to protect against some strange
409 * bridge configurations that may issue Memory Write Block
410 * (MWB) to our register space.
411 */
412 E1000_WRITE_FLUSH(hw);
413 }
414
415 /* Setup link and flow control */
416 ret_val = mac->ops.setup_link(hw);
417
418 txdctl = E1000_READ_REG(hw, E1000_TXDCTL(0));
419 txdctl = (txdctl & ~E1000_TXDCTL_WTHRESH) |
420 E1000_TXDCTL_FULL_TX_DESC_WB;
421 E1000_WRITE_REG(hw, E1000_TXDCTL(0), txdctl);
422
423 /*
424 * Clear all of the statistics registers (clear on read). It is
425 * important that we do this after we have tried to establish link
426 * because the symbol error count will increment wildly if there
427 * is no link.
428 */
429 e1000_clear_hw_cntrs_82541(hw);
430
431out:
432 return ret_val;
433}
434
435/**
436 * e1000_get_link_up_info_82541 - Report speed and duplex
437 * @hw: pointer to the HW structure
438 * @speed: pointer to speed buffer
439 * @duplex: pointer to duplex buffer
440 *
441 * Retrieve the current speed and duplex configuration.
442 **/
443static s32 e1000_get_link_up_info_82541(struct e1000_hw *hw, u16 *speed,
444 u16 *duplex)
445{
446 struct e1000_phy_info *phy = &hw->phy;
447 s32 ret_val;
448 u16 data;
449
450 DEBUGFUNC("e1000_get_link_up_info_82541");
451
452 ret_val = e1000_get_speed_and_duplex_copper_generic(hw, speed, duplex);
453 if (ret_val)
454 goto out;
455
456 if (!phy->speed_downgraded)
457 goto out;
458
459 /*
460 * IGP01 PHY may advertise full duplex operation after speed
461 * downgrade even if it is operating at half duplex.
462 * Here we set the duplex settings to match the duplex in the
463 * link partner's capabilities.
464 */
465 ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_EXP, &data);
466 if (ret_val)
467 goto out;
468
469 if (!(data & NWAY_ER_LP_NWAY_CAPS)) {
470 *duplex = HALF_DUPLEX;
471 } else {
472 ret_val = phy->ops.read_reg(hw, PHY_LP_ABILITY, &data);
473 if (ret_val)
474 goto out;
475
476 if (*speed == SPEED_100) {
477 if (!(data & NWAY_LPAR_100TX_FD_CAPS))
478 *duplex = HALF_DUPLEX;
479 } else if (*speed == SPEED_10) {
480 if (!(data & NWAY_LPAR_10T_FD_CAPS))
481 *duplex = HALF_DUPLEX;
482 }
483 }
484
485out:
486 return ret_val;
487}
488
489/**
490 * e1000_phy_hw_reset_82541 - PHY hardware reset
491 * @hw: pointer to the HW structure
492 *
493 * Verify the reset block is not blocking us from resetting. Acquire
494 * semaphore (if necessary) and read/set/write the device control reset
495 * bit in the PHY. Wait the appropriate delay time for the device to
496 * reset and release the semaphore (if necessary).
497 **/
498static s32 e1000_phy_hw_reset_82541(struct e1000_hw *hw)
499{
500 s32 ret_val;
501 u32 ledctl;
502
503 DEBUGFUNC("e1000_phy_hw_reset_82541");
504
505 ret_val = e1000_phy_hw_reset_generic(hw);
506 if (ret_val)
507 goto out;
508
509 e1000_phy_init_script_82541(hw);
510
511 if ((hw->mac.type == e1000_82541) || (hw->mac.type == e1000_82547)) {
512 /* Configure activity LED after PHY reset */
513 ledctl = E1000_READ_REG(hw, E1000_LEDCTL);
514 ledctl &= IGP_ACTIVITY_LED_MASK;
515 ledctl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
516 E1000_WRITE_REG(hw, E1000_LEDCTL, ledctl);
517 }
518
519out:
520 return ret_val;
521}
522
523/**
524 * e1000_setup_copper_link_82541 - Configure copper link settings
525 * @hw: pointer to the HW structure
526 *
527 * Calls the appropriate function to configure the link for auto-neg or forced
528 * speed and duplex. Then we check for link, once link is established calls
529 * to configure collision distance and flow control are called. If link is
530 * not established, we return -E1000_ERR_PHY (-2).
531 **/
532static s32 e1000_setup_copper_link_82541(struct e1000_hw *hw)
533{
534 struct e1000_phy_info *phy = &hw->phy;
535 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
536 s32 ret_val;
537 u32 ctrl, ledctl;
538
539 DEBUGFUNC("e1000_setup_copper_link_82541");
540
541 ctrl = E1000_READ_REG(hw, E1000_CTRL);
542 ctrl |= E1000_CTRL_SLU;
543 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
544 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
545
546
547 /* Earlier revs of the IGP phy require us to force MDI. */
548 if (hw->mac.type == e1000_82541 || hw->mac.type == e1000_82547) {
549 dev_spec->dsp_config = e1000_dsp_config_disabled;
550 phy->mdix = 1;
551 } else {
552 dev_spec->dsp_config = e1000_dsp_config_enabled;
553 }
554
555 ret_val = e1000_copper_link_setup_igp(hw);
556 if (ret_val)
557 goto out;
558
559 if (hw->mac.autoneg) {
560 if (dev_spec->ffe_config == e1000_ffe_config_active)
561 dev_spec->ffe_config = e1000_ffe_config_enabled;
562 }
563
564 /* Configure activity LED after Phy reset */
565 ledctl = E1000_READ_REG(hw, E1000_LEDCTL);
566 ledctl &= IGP_ACTIVITY_LED_MASK;
567 ledctl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
568 E1000_WRITE_REG(hw, E1000_LEDCTL, ledctl);
569
570 ret_val = e1000_setup_copper_link_generic(hw);
571
572out:
573 return ret_val;
574}
575
576/**
577 * e1000_check_for_link_82541 - Check/Store link connection
578 * @hw: pointer to the HW structure
579 *
580 * This checks the link condition of the adapter and stores the
581 * results in the hw->mac structure.
582 **/
583static s32 e1000_check_for_link_82541(struct e1000_hw *hw)
584{
585 struct e1000_mac_info *mac = &hw->mac;
586 s32 ret_val;
587 bool link;
588
589 DEBUGFUNC("e1000_check_for_link_82541");
590
591 /*
592 * We only want to go out to the PHY registers to see if Auto-Neg
593 * has completed and/or if our link status has changed. The
594 * get_link_status flag is set upon receiving a Link Status
595 * Change or Rx Sequence Error interrupt.
596 */
597 if (!mac->get_link_status) {
598 ret_val = E1000_SUCCESS;
599 goto out;
600 }
601
602 /*
603 * First we want to see if the MII Status Register reports
604 * link. If so, then we want to get the current speed/duplex
605 * of the PHY.
606 */
607 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
608 if (ret_val)
609 goto out;
610
611 if (!link) {
612 ret_val = e1000_config_dsp_after_link_change_82541(hw, FALSE);
613 goto out; /* No link detected */
614 }
615
616 mac->get_link_status = FALSE;
617
618 /*
619 * Check if there was DownShift, must be checked
620 * immediately after link-up
621 */
622 e1000_check_downshift_generic(hw);
623
624 /*
625 * If we are forcing speed/duplex, then we simply return since
626 * we have already determined whether we have link or not.
627 */
628 if (!mac->autoneg) {
629 ret_val = -E1000_ERR_CONFIG;
630 goto out;
631 }
632
633 ret_val = e1000_config_dsp_after_link_change_82541(hw, TRUE);
634
635 /*
636 * Auto-Neg is enabled. Auto Speed Detection takes care
637 * of MAC speed/duplex configuration. So we only need to
638 * configure Collision Distance in the MAC.
639 */
640 mac->ops.config_collision_dist(hw);
641
642 /*
643 * Configure Flow Control now that Auto-Neg has completed.
644 * First, we need to restore the desired flow control
645 * settings because we may have had to re-autoneg with a
646 * different link partner.
647 */
648 ret_val = e1000_config_fc_after_link_up_generic(hw);
649 if (ret_val)
650 DEBUGOUT("Error configuring flow control\n");
651
652out:
653 return ret_val;
654}
655
656/**
657 * e1000_config_dsp_after_link_change_82541 - Config DSP after link
658 * @hw: pointer to the HW structure
659 * @link_up: boolean flag for link up status
660 *
661 * Return E1000_ERR_PHY when failing to read/write the PHY, else E1000_SUCCESS
662 * at any other case.
663 *
664 * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a
665 * gigabit link is achieved to improve link quality.
666 **/
667static s32 e1000_config_dsp_after_link_change_82541(struct e1000_hw *hw,
668 bool link_up)
669{
670 struct e1000_phy_info *phy = &hw->phy;
671 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
672 s32 ret_val;
673 u32 idle_errs = 0;
674 u16 phy_data, phy_saved_data, speed, duplex, i;
675 u16 ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20;
676 u16 dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = {
677 IGP01E1000_PHY_AGC_PARAM_A,
678 IGP01E1000_PHY_AGC_PARAM_B,
679 IGP01E1000_PHY_AGC_PARAM_C,
680 IGP01E1000_PHY_AGC_PARAM_D};
681
682 DEBUGFUNC("e1000_config_dsp_after_link_change_82541");
683
684 if (link_up) {
685 ret_val = hw->mac.ops.get_link_up_info(hw, &speed, &duplex);
686 if (ret_val) {
687 DEBUGOUT("Error getting link speed and duplex\n");
688 goto out;
689 }
690
691 if (speed != SPEED_1000) {
692 ret_val = E1000_SUCCESS;
693 goto out;
694 }
695
696 ret_val = phy->ops.get_cable_length(hw);
697 if (ret_val)
698 goto out;
699
700 if ((dev_spec->dsp_config == e1000_dsp_config_enabled) &&
701 phy->min_cable_length >= 50) {
702
703 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
704 ret_val = phy->ops.read_reg(hw,
705 dsp_reg_array[i],
706 &phy_data);
707 if (ret_val)
708 goto out;
709
710 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
711
712 ret_val = phy->ops.write_reg(hw,
713 dsp_reg_array[i],
714 phy_data);
715 if (ret_val)
716 goto out;
717 }
718 dev_spec->dsp_config = e1000_dsp_config_activated;
719 }
720
721 if ((dev_spec->ffe_config != e1000_ffe_config_enabled) ||
722 (phy->min_cable_length >= 50)) {
723 ret_val = E1000_SUCCESS;
724 goto out;
725 }
726
727 /* clear previous idle error counts */
728 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &phy_data);
729 if (ret_val)
730 goto out;
731
732 for (i = 0; i < ffe_idle_err_timeout; i++) {
733 usec_delay(1000);
734 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS,
735 &phy_data);
736 if (ret_val)
737 goto out;
738
739 idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT);
740 if (idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) {
741 dev_spec->ffe_config = e1000_ffe_config_active;
742
743 ret_val = phy->ops.write_reg(hw,
744 IGP01E1000_PHY_DSP_FFE,
745 IGP01E1000_PHY_DSP_FFE_CM_CP);
746 if (ret_val)
747 goto out;
748 break;
749 }
750
751 if (idle_errs)
752 ffe_idle_err_timeout =
753 FFE_IDLE_ERR_COUNT_TIMEOUT_100;
754 }
755 } else {
756 if (dev_spec->dsp_config == e1000_dsp_config_activated) {
757 /*
758 * Save off the current value of register 0x2F5B
759 * to be restored at the end of the routines.
760 */
761 ret_val = phy->ops.read_reg(hw, 0x2F5B,
762 &phy_saved_data);
763 if (ret_val)
764 goto out;
765
766 /* Disable the PHY transmitter */
767 ret_val = phy->ops.write_reg(hw, 0x2F5B, 0x0003);
768 if (ret_val)
769 goto out;
770
771 msec_delay_irq(20);
772
773 ret_val = phy->ops.write_reg(hw, 0x0000,
774 IGP01E1000_IEEE_FORCE_GIG);
775 if (ret_val)
776 goto out;
777 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
778 ret_val = phy->ops.read_reg(hw,
779 dsp_reg_array[i],
780 &phy_data);
781 if (ret_val)
782 goto out;
783
784 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
785 phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS;
786
787 ret_val = phy->ops.write_reg(hw,
788 dsp_reg_array[i],
789 phy_data);
790 if (ret_val)
791 goto out;
792 }
793
794 ret_val = phy->ops.write_reg(hw, 0x0000,
795 IGP01E1000_IEEE_RESTART_AUTONEG);
796 if (ret_val)
797 goto out;
798
799 msec_delay_irq(20);
800
801 /* Now enable the transmitter */
802 ret_val = phy->ops.write_reg(hw, 0x2F5B,
803 phy_saved_data);
804 if (ret_val)
805 goto out;
806
807 dev_spec->dsp_config = e1000_dsp_config_enabled;
808 }
809
810 if (dev_spec->ffe_config != e1000_ffe_config_active) {
811 ret_val = E1000_SUCCESS;
812 goto out;
813 }
814
815 /*
816 * Save off the current value of register 0x2F5B
817 * to be restored at the end of the routines.
818 */
819 ret_val = phy->ops.read_reg(hw, 0x2F5B, &phy_saved_data);
820 if (ret_val)
821 goto out;
822
823 /* Disable the PHY transmitter */
824 ret_val = phy->ops.write_reg(hw, 0x2F5B, 0x0003);
825 if (ret_val)
826 goto out;
827
828 msec_delay_irq(20);
829
830 ret_val = phy->ops.write_reg(hw, 0x0000,
831 IGP01E1000_IEEE_FORCE_GIG);
832 if (ret_val)
833 goto out;
834
835 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_DSP_FFE,
836 IGP01E1000_PHY_DSP_FFE_DEFAULT);
837 if (ret_val)
838 goto out;
839
840 ret_val = phy->ops.write_reg(hw, 0x0000,
841 IGP01E1000_IEEE_RESTART_AUTONEG);
842 if (ret_val)
843 goto out;
844
845 msec_delay_irq(20);
846
847 /* Now enable the transmitter */
848 ret_val = phy->ops.write_reg(hw, 0x2F5B, phy_saved_data);
849
850 if (ret_val)
851 goto out;
852
853 dev_spec->ffe_config = e1000_ffe_config_enabled;
854 }
855
856out:
857 return ret_val;
858}
859
860/**
861 * e1000_get_cable_length_igp_82541 - Determine cable length for igp PHY
862 * @hw: pointer to the HW structure
863 *
864 * The automatic gain control (agc) normalizes the amplitude of the
865 * received signal, adjusting for the attenuation produced by the
866 * cable. By reading the AGC registers, which represent the
867 * combination of coarse and fine gain value, the value can be put
868 * into a lookup table to obtain the approximate cable length
869 * for each channel.
870 **/
871static s32 e1000_get_cable_length_igp_82541(struct e1000_hw *hw)
872{
873 struct e1000_phy_info *phy = &hw->phy;
874 s32 ret_val = E1000_SUCCESS;
875 u16 i, data;
876 u16 cur_agc_value, agc_value = 0;
877 u16 min_agc_value = IGP01E1000_AGC_LENGTH_TABLE_SIZE;
878 u16 agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = {IGP01E1000_PHY_AGC_A,
879 IGP01E1000_PHY_AGC_B,
880 IGP01E1000_PHY_AGC_C,
881 IGP01E1000_PHY_AGC_D};
882
883 DEBUGFUNC("e1000_get_cable_length_igp_82541");
884
885 /* Read the AGC registers for all channels */
886 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
887 ret_val = phy->ops.read_reg(hw, agc_reg_array[i], &data);
888 if (ret_val)
889 goto out;
890
891 cur_agc_value = data >> IGP01E1000_AGC_LENGTH_SHIFT;
892
893 /* Bounds checking */
894 if ((cur_agc_value >= IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) ||
895 (cur_agc_value == 0)) {
896 ret_val = -E1000_ERR_PHY;
897 goto out;
898 }
899
900 agc_value += cur_agc_value;
901
902 if (min_agc_value > cur_agc_value)
903 min_agc_value = cur_agc_value;
904 }
905
906 /* Remove the minimal AGC result for length < 50m */
907 if (agc_value < IGP01E1000_PHY_CHANNEL_NUM * 50) {
908 agc_value -= min_agc_value;
909 /* Average the three remaining channels for the length. */
910 agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1);
911 } else {
912 /* Average the channels for the length. */
913 agc_value /= IGP01E1000_PHY_CHANNEL_NUM;
914 }
915
916 phy->min_cable_length = (e1000_igp_cable_length_table[agc_value] >
917 IGP01E1000_AGC_RANGE)
918 ? (e1000_igp_cable_length_table[agc_value] -
919 IGP01E1000_AGC_RANGE)
920 : 0;
921 phy->max_cable_length = e1000_igp_cable_length_table[agc_value] +
922 IGP01E1000_AGC_RANGE;
923
924 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
925
926out:
927 return ret_val;
928}
929
930/**
931 * e1000_set_d3_lplu_state_82541 - Sets low power link up state for D3
932 * @hw: pointer to the HW structure
933 * @active: boolean used to enable/disable lplu
934 *
935 * Success returns 0, Failure returns 1
936 *
937 * The low power link up (lplu) state is set to the power management level D3
938 * and SmartSpeed is disabled when active is TRUE, else clear lplu for D3
939 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
940 * is used during Dx states where the power conservation is most important.
941 * During driver activity, SmartSpeed should be enabled so performance is
942 * maintained.
943 **/
944static s32 e1000_set_d3_lplu_state_82541(struct e1000_hw *hw, bool active)
945{
946 struct e1000_phy_info *phy = &hw->phy;
947 s32 ret_val;
948 u16 data;
949
950 DEBUGFUNC("e1000_set_d3_lplu_state_82541");
951
952 switch (hw->mac.type) {
953 case e1000_82541_rev_2:
954 case e1000_82547_rev_2:
955 break;
956 default:
957 ret_val = e1000_set_d3_lplu_state_generic(hw, active);
958 goto out;
959 break;
960 }
961
962 ret_val = phy->ops.read_reg(hw, IGP01E1000_GMII_FIFO, &data);
963 if (ret_val)
964 goto out;
965
966 if (!active) {
967 data &= ~IGP01E1000_GMII_FLEX_SPD;
968 ret_val = phy->ops.write_reg(hw, IGP01E1000_GMII_FIFO, data);
969 if (ret_val)
970 goto out;
971
972 /*
973 * LPLU and SmartSpeed are mutually exclusive. LPLU is used
974 * during Dx states where the power conservation is most
975 * important. During driver activity we should enable
976 * SmartSpeed, so performance is maintained.
977 */
978 if (phy->smart_speed == e1000_smart_speed_on) {
979 ret_val = phy->ops.read_reg(hw,
980 IGP01E1000_PHY_PORT_CONFIG,
981 &data);
982 if (ret_val)
983 goto out;
984
985 data |= IGP01E1000_PSCFR_SMART_SPEED;
986 ret_val = phy->ops.write_reg(hw,
987 IGP01E1000_PHY_PORT_CONFIG,
988 data);
989 if (ret_val)
990 goto out;
991 } else if (phy->smart_speed == e1000_smart_speed_off) {
992 ret_val = phy->ops.read_reg(hw,
993 IGP01E1000_PHY_PORT_CONFIG,
994 &data);
995 if (ret_val)
996 goto out;
997
998 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
999 ret_val = phy->ops.write_reg(hw,
1000 IGP01E1000_PHY_PORT_CONFIG,
1001 data);
1002 if (ret_val)
1003 goto out;
1004 }
1005 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1006 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1007 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1008 data |= IGP01E1000_GMII_FLEX_SPD;
1009 ret_val = phy->ops.write_reg(hw, IGP01E1000_GMII_FIFO, data);
1010 if (ret_val)
1011 goto out;
1012
1013 /* When LPLU is enabled, we should disable SmartSpeed */
1014 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1015 &data);
1016 if (ret_val)
1017 goto out;
1018
1019 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1020 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1021 data);
1022 }
1023
1024out:
1025 return ret_val;
1026}
1027
1028/**
1029 * e1000_setup_led_82541 - Configures SW controllable LED
1030 * @hw: pointer to the HW structure
1031 *
1032 * This prepares the SW controllable LED for use and saves the current state
1033 * of the LED so it can be later restored.
1034 **/
1035static s32 e1000_setup_led_82541(struct e1000_hw *hw)
1036{
1037 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1038 s32 ret_val;
1039
1040 DEBUGFUNC("e1000_setup_led_82541");
1041
1042 ret_val = hw->phy.ops.read_reg(hw, IGP01E1000_GMII_FIFO,
1043 &dev_spec->spd_default);
1044 if (ret_val)
1045 goto out;
1046
1047 ret_val = hw->phy.ops.write_reg(hw, IGP01E1000_GMII_FIFO,
1048 (u16)(dev_spec->spd_default &
1049 ~IGP01E1000_GMII_SPD));
1050 if (ret_val)
1051 goto out;
1052
1053 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_mode1);
1054
1055out:
1056 return ret_val;
1057}
1058
1059/**
1060 * e1000_cleanup_led_82541 - Set LED config to default operation
1061 * @hw: pointer to the HW structure
1062 *
1063 * Remove the current LED configuration and set the LED configuration
1064 * to the default value, saved from the EEPROM.
1065 **/
1066static s32 e1000_cleanup_led_82541(struct e1000_hw *hw)
1067{
1068 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1069 s32 ret_val;
1070
1071 DEBUGFUNC("e1000_cleanup_led_82541");
1072
1073 ret_val = hw->phy.ops.write_reg(hw, IGP01E1000_GMII_FIFO,
1074 dev_spec->spd_default);
1075 if (ret_val)
1076 goto out;
1077
1078 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_default);
1079
1080out:
1081 return ret_val;
1082}
1083
1084/**
1085 * e1000_phy_init_script_82541 - Initialize GbE PHY
1086 * @hw: pointer to the HW structure
1087 *
1088 * Initializes the IGP PHY.
1089 **/
1090static s32 e1000_phy_init_script_82541(struct e1000_hw *hw)
1091{
1092 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1093 u32 ret_val;
1094 u16 phy_saved_data;
1095
1096 DEBUGFUNC("e1000_phy_init_script_82541");
1097
1098 if (!dev_spec->phy_init_script) {
1099 ret_val = E1000_SUCCESS;
1100 goto out;
1101 }
1102
1103 /* Delay after phy reset to enable NVM configuration to load */
1104 msec_delay(20);
1105
1106 /*
1107 * Save off the current value of register 0x2F5B to be restored at
1108 * the end of this routine.
1109 */
1110 ret_val = hw->phy.ops.read_reg(hw, 0x2F5B, &phy_saved_data);
1111
1112 /* Disabled the PHY transmitter */
1113 hw->phy.ops.write_reg(hw, 0x2F5B, 0x0003);
1114
1115 msec_delay(20);
1116
1117 hw->phy.ops.write_reg(hw, 0x0000, 0x0140);
1118
1119 msec_delay(5);
1120
1121 switch (hw->mac.type) {
1122 case e1000_82541:
1123 case e1000_82547:
1124 hw->phy.ops.write_reg(hw, 0x1F95, 0x0001);
1125
1126 hw->phy.ops.write_reg(hw, 0x1F71, 0xBD21);
1127
1128 hw->phy.ops.write_reg(hw, 0x1F79, 0x0018);
1129
1130 hw->phy.ops.write_reg(hw, 0x1F30, 0x1600);
1131
1132 hw->phy.ops.write_reg(hw, 0x1F31, 0x0014);
1133
1134 hw->phy.ops.write_reg(hw, 0x1F32, 0x161C);
1135
1136 hw->phy.ops.write_reg(hw, 0x1F94, 0x0003);
1137
1138 hw->phy.ops.write_reg(hw, 0x1F96, 0x003F);
1139
1140 hw->phy.ops.write_reg(hw, 0x2010, 0x0008);
1141 break;
1142 case e1000_82541_rev_2:
1143 case e1000_82547_rev_2:
1144 hw->phy.ops.write_reg(hw, 0x1F73, 0x0099);
1145 break;
1146 default:
1147 break;
1148 }
1149
1150 hw->phy.ops.write_reg(hw, 0x0000, 0x3300);
1151
1152 msec_delay(20);
1153
1154 /* Now enable the transmitter */
1155 hw->phy.ops.write_reg(hw, 0x2F5B, phy_saved_data);
1156
1157 if (hw->mac.type == e1000_82547) {
1158 u16 fused, fine, coarse;
1159
1160 /* Move to analog registers page */
1161 hw->phy.ops.read_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS,
1162 &fused);
1163
1164 if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
1165 hw->phy.ops.read_reg(hw, IGP01E1000_ANALOG_FUSE_STATUS,
1166 &fused);
1167
1168 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
1169 coarse = fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
1170
1171 if (coarse > IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
1172 coarse -= IGP01E1000_ANALOG_FUSE_COARSE_10;
1173 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
1174 } else if (coarse ==
1175 IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
1176 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
1177
1178 fused = (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
1179 (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
1180 (coarse & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
1181
1182 hw->phy.ops.write_reg(hw,
1183 IGP01E1000_ANALOG_FUSE_CONTROL,
1184 fused);
1185 hw->phy.ops.write_reg(hw,
1186 IGP01E1000_ANALOG_FUSE_BYPASS,
1187 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
1188 }
1189 }
1190
1191out:
1192 return ret_val;
1193}
1194
1195/**
1196 * e1000_init_script_state_82541 - Enable/Disable PHY init script
1197 * @hw: pointer to the HW structure
1198 * @state: boolean value used to enable/disable PHY init script
1199 *
1200 * Allows the driver to enable/disable the PHY init script, if the PHY is an
1201 * IGP PHY.
1202 **/
1203void e1000_init_script_state_82541(struct e1000_hw *hw, bool state)
1204{
1205 struct e1000_dev_spec_82541 *dev_spec = &hw->dev_spec._82541;
1206
1207 DEBUGFUNC("e1000_init_script_state_82541");
1208
1209 if (hw->phy.type != e1000_phy_igp) {
1210 DEBUGOUT("Initialization script not necessary.\n");
1211 goto out;
1212 }
1213
1214 dev_spec->phy_init_script = state;
1215
1216out:
1217 return;
1218}
1219
1220/**
1221 * e1000_power_down_phy_copper_82541 - Remove link in case of PHY power down
1222 * @hw: pointer to the HW structure
1223 *
1224 * In the case of a PHY power down to save power, or to turn off link during a
1225 * driver unload, or wake on lan is not enabled, remove the link.
1226 **/
1227static void e1000_power_down_phy_copper_82541(struct e1000_hw *hw)
1228{
1229 /* If the management interface is not enabled, then power down */
1230 if (!(E1000_READ_REG(hw, E1000_MANC) & E1000_MANC_SMBUS_EN))
1231 e1000_power_down_phy_copper(hw);
1232
1233 return;
1234}
1235
1236/**
1237 * e1000_clear_hw_cntrs_82541 - Clear device specific hardware counters
1238 * @hw: pointer to the HW structure
1239 *
1240 * Clears the hardware counters by reading the counter registers.
1241 **/
1242static void e1000_clear_hw_cntrs_82541(struct e1000_hw *hw)
1243{
1244 DEBUGFUNC("e1000_clear_hw_cntrs_82541");
1245
1246 e1000_clear_hw_cntrs_base_generic(hw);
1247
1248 E1000_READ_REG(hw, E1000_PRC64);
1249 E1000_READ_REG(hw, E1000_PRC127);
1250 E1000_READ_REG(hw, E1000_PRC255);
1251 E1000_READ_REG(hw, E1000_PRC511);
1252 E1000_READ_REG(hw, E1000_PRC1023);
1253 E1000_READ_REG(hw, E1000_PRC1522);
1254 E1000_READ_REG(hw, E1000_PTC64);
1255 E1000_READ_REG(hw, E1000_PTC127);
1256 E1000_READ_REG(hw, E1000_PTC255);
1257 E1000_READ_REG(hw, E1000_PTC511);
1258 E1000_READ_REG(hw, E1000_PTC1023);
1259 E1000_READ_REG(hw, E1000_PTC1522);
1260
1261 E1000_READ_REG(hw, E1000_ALGNERRC);
1262 E1000_READ_REG(hw, E1000_RXERRC);
1263 E1000_READ_REG(hw, E1000_TNCRS);
1264 E1000_READ_REG(hw, E1000_CEXTERR);
1265 E1000_READ_REG(hw, E1000_TSCTC);
1266 E1000_READ_REG(hw, E1000_TSCTFC);
1267
1268 E1000_READ_REG(hw, E1000_MGTPRC);
1269 E1000_READ_REG(hw, E1000_MGTPDC);
1270 E1000_READ_REG(hw, E1000_MGTPTC);
1271}
1272
1273/**
1274 * e1000_read_mac_addr_82541 - Read device MAC address
1275 * @hw: pointer to the HW structure
1276 *
1277 * Reads the device MAC address from the EEPROM and stores the value.
1278 **/
1279static s32 e1000_read_mac_addr_82541(struct e1000_hw *hw)
1280{
1281 s32 ret_val = E1000_SUCCESS;
1282 u16 offset, nvm_data, i;
1283
1284 DEBUGFUNC("e1000_read_mac_addr");
1285
1286 for (i = 0; i < ETH_ADDR_LEN; i += 2) {
1287 offset = i >> 1;
1288 ret_val = hw->nvm.ops.read(hw, offset, 1, &nvm_data);
1289 if (ret_val) {
1290 DEBUGOUT("NVM Read Error\n");
1291 goto out;
1292 }
1293 hw->mac.perm_addr[i] = (u8)(nvm_data & 0xFF);
1294 hw->mac.perm_addr[i+1] = (u8)(nvm_data >> 8);
1295 }
1296
1297 for (i = 0; i < ETH_ADDR_LEN; i++)
1298 hw->mac.addr[i] = hw->mac.perm_addr[i];
1299
1300out:
1301 return ret_val;
1302}
1303