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Auke Kokbc7f75f2007-09-17 12:30:59 -07001/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
Bruce Allanad680762008-03-28 09:15:03 -07004 Copyright(c) 1999 - 2008 Intel Corporation.
Auke Kokbc7f75f2007-09-17 12:30:59 -07005
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#include <linux/delay.h>
30
31#include "e1000.h"
32
33static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw);
34static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw);
35static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active);
36static s32 e1000_wait_autoneg(struct e1000_hw *hw);
Bruce Allan97ac8ca2008-04-29 09:16:05 -070037static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg);
38static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
39 u16 *data, bool read);
Auke Kokbc7f75f2007-09-17 12:30:59 -070040
41/* Cable length tables */
42static const u16 e1000_m88_cable_length_table[] =
43 { 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED };
44
45static const u16 e1000_igp_2_cable_length_table[] =
46 { 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, 0, 0, 0, 3,
47 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, 6, 10, 14, 18, 22,
48 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, 21, 26, 31, 35, 40,
49 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, 40, 45, 51, 56, 61,
50 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, 60, 66, 72, 77, 82,
51 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, 83, 89, 95,
52 100, 105, 109, 113, 116, 119, 122, 124, 104, 109, 114, 118, 121,
53 124};
54#define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \
Alejandro Martinez Ruizc00acf42007-10-18 10:16:33 +020055 ARRAY_SIZE(e1000_igp_2_cable_length_table)
Auke Kokbc7f75f2007-09-17 12:30:59 -070056
57/**
58 * e1000e_check_reset_block_generic - Check if PHY reset is blocked
59 * @hw: pointer to the HW structure
60 *
61 * Read the PHY management control register and check whether a PHY reset
62 * is blocked. If a reset is not blocked return 0, otherwise
63 * return E1000_BLK_PHY_RESET (12).
64 **/
65s32 e1000e_check_reset_block_generic(struct e1000_hw *hw)
66{
67 u32 manc;
68
69 manc = er32(MANC);
70
71 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
72 E1000_BLK_PHY_RESET : 0;
73}
74
75/**
76 * e1000e_get_phy_id - Retrieve the PHY ID and revision
77 * @hw: pointer to the HW structure
78 *
79 * Reads the PHY registers and stores the PHY ID and possibly the PHY
80 * revision in the hardware structure.
81 **/
82s32 e1000e_get_phy_id(struct e1000_hw *hw)
83{
84 struct e1000_phy_info *phy = &hw->phy;
85 s32 ret_val;
86 u16 phy_id;
87
88 ret_val = e1e_rphy(hw, PHY_ID1, &phy_id);
89 if (ret_val)
90 return ret_val;
91
92 phy->id = (u32)(phy_id << 16);
93 udelay(20);
94 ret_val = e1e_rphy(hw, PHY_ID2, &phy_id);
95 if (ret_val)
96 return ret_val;
97
98 phy->id |= (u32)(phy_id & PHY_REVISION_MASK);
99 phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
100
101 return 0;
102}
103
104/**
105 * e1000e_phy_reset_dsp - Reset PHY DSP
106 * @hw: pointer to the HW structure
107 *
108 * Reset the digital signal processor.
109 **/
110s32 e1000e_phy_reset_dsp(struct e1000_hw *hw)
111{
112 s32 ret_val;
113
114 ret_val = e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0xC1);
115 if (ret_val)
116 return ret_val;
117
118 return e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0);
119}
120
121/**
David Graham2d9498f2008-04-23 11:09:14 -0700122 * e1000e_read_phy_reg_mdic - Read MDI control register
Auke Kokbc7f75f2007-09-17 12:30:59 -0700123 * @hw: pointer to the HW structure
124 * @offset: register offset to be read
125 * @data: pointer to the read data
126 *
Auke Kok489815c2008-02-21 15:11:07 -0800127 * Reads the MDI control register in the PHY at offset and stores the
Auke Kokbc7f75f2007-09-17 12:30:59 -0700128 * information read to data.
129 **/
David Graham2d9498f2008-04-23 11:09:14 -0700130s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700131{
132 struct e1000_phy_info *phy = &hw->phy;
133 u32 i, mdic = 0;
134
135 if (offset > MAX_PHY_REG_ADDRESS) {
136 hw_dbg(hw, "PHY Address %d is out of range\n", offset);
137 return -E1000_ERR_PARAM;
138 }
139
Bruce Allanad680762008-03-28 09:15:03 -0700140 /*
141 * Set up Op-code, Phy Address, and register offset in the MDI
Auke Kokbc7f75f2007-09-17 12:30:59 -0700142 * Control register. The MAC will take care of interfacing with the
143 * PHY to retrieve the desired data.
144 */
145 mdic = ((offset << E1000_MDIC_REG_SHIFT) |
146 (phy->addr << E1000_MDIC_PHY_SHIFT) |
147 (E1000_MDIC_OP_READ));
148
149 ew32(MDIC, mdic);
150
Bruce Allanad680762008-03-28 09:15:03 -0700151 /*
152 * Poll the ready bit to see if the MDI read completed
153 * Increasing the time out as testing showed failures with
154 * the lower time out
155 */
David Graham2d9498f2008-04-23 11:09:14 -0700156 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700157 udelay(50);
158 mdic = er32(MDIC);
159 if (mdic & E1000_MDIC_READY)
160 break;
161 }
162 if (!(mdic & E1000_MDIC_READY)) {
163 hw_dbg(hw, "MDI Read did not complete\n");
164 return -E1000_ERR_PHY;
165 }
166 if (mdic & E1000_MDIC_ERROR) {
167 hw_dbg(hw, "MDI Error\n");
168 return -E1000_ERR_PHY;
169 }
170 *data = (u16) mdic;
171
172 return 0;
173}
174
175/**
David Graham2d9498f2008-04-23 11:09:14 -0700176 * e1000e_write_phy_reg_mdic - Write MDI control register
Auke Kokbc7f75f2007-09-17 12:30:59 -0700177 * @hw: pointer to the HW structure
178 * @offset: register offset to write to
179 * @data: data to write to register at offset
180 *
181 * Writes data to MDI control register in the PHY at offset.
182 **/
David Graham2d9498f2008-04-23 11:09:14 -0700183s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
Auke Kokbc7f75f2007-09-17 12:30:59 -0700184{
185 struct e1000_phy_info *phy = &hw->phy;
186 u32 i, mdic = 0;
187
188 if (offset > MAX_PHY_REG_ADDRESS) {
189 hw_dbg(hw, "PHY Address %d is out of range\n", offset);
190 return -E1000_ERR_PARAM;
191 }
192
Bruce Allanad680762008-03-28 09:15:03 -0700193 /*
194 * Set up Op-code, Phy Address, and register offset in the MDI
Auke Kokbc7f75f2007-09-17 12:30:59 -0700195 * Control register. The MAC will take care of interfacing with the
196 * PHY to retrieve the desired data.
197 */
198 mdic = (((u32)data) |
199 (offset << E1000_MDIC_REG_SHIFT) |
200 (phy->addr << E1000_MDIC_PHY_SHIFT) |
201 (E1000_MDIC_OP_WRITE));
202
203 ew32(MDIC, mdic);
204
David Graham2d9498f2008-04-23 11:09:14 -0700205 /*
206 * Poll the ready bit to see if the MDI read completed
207 * Increasing the time out as testing showed failures with
208 * the lower time out
209 */
210 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
211 udelay(50);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700212 mdic = er32(MDIC);
213 if (mdic & E1000_MDIC_READY)
214 break;
215 }
216 if (!(mdic & E1000_MDIC_READY)) {
217 hw_dbg(hw, "MDI Write did not complete\n");
218 return -E1000_ERR_PHY;
219 }
David Graham2d9498f2008-04-23 11:09:14 -0700220 if (mdic & E1000_MDIC_ERROR) {
221 hw_dbg(hw, "MDI Error\n");
222 return -E1000_ERR_PHY;
223 }
Auke Kokbc7f75f2007-09-17 12:30:59 -0700224
225 return 0;
226}
227
228/**
229 * e1000e_read_phy_reg_m88 - Read m88 PHY register
230 * @hw: pointer to the HW structure
231 * @offset: register offset to be read
232 * @data: pointer to the read data
233 *
234 * Acquires semaphore, if necessary, then reads the PHY register at offset
235 * and storing the retrieved information in data. Release any acquired
236 * semaphores before exiting.
237 **/
238s32 e1000e_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data)
239{
240 s32 ret_val;
241
242 ret_val = hw->phy.ops.acquire_phy(hw);
243 if (ret_val)
244 return ret_val;
245
David Graham2d9498f2008-04-23 11:09:14 -0700246 ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
247 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700248
249 hw->phy.ops.release_phy(hw);
250
251 return ret_val;
252}
253
254/**
255 * e1000e_write_phy_reg_m88 - Write m88 PHY register
256 * @hw: pointer to the HW structure
257 * @offset: register offset to write to
258 * @data: data to write at register offset
259 *
260 * Acquires semaphore, if necessary, then writes the data to PHY register
261 * at the offset. Release any acquired semaphores before exiting.
262 **/
263s32 e1000e_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data)
264{
265 s32 ret_val;
266
267 ret_val = hw->phy.ops.acquire_phy(hw);
268 if (ret_val)
269 return ret_val;
270
David Graham2d9498f2008-04-23 11:09:14 -0700271 ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
272 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700273
274 hw->phy.ops.release_phy(hw);
275
276 return ret_val;
277}
278
279/**
280 * e1000e_read_phy_reg_igp - Read igp PHY register
281 * @hw: pointer to the HW structure
282 * @offset: register offset to be read
283 * @data: pointer to the read data
284 *
285 * Acquires semaphore, if necessary, then reads the PHY register at offset
286 * and storing the retrieved information in data. Release any acquired
287 * semaphores before exiting.
288 **/
289s32 e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data)
290{
291 s32 ret_val;
292
293 ret_val = hw->phy.ops.acquire_phy(hw);
294 if (ret_val)
295 return ret_val;
296
297 if (offset > MAX_PHY_MULTI_PAGE_REG) {
David Graham2d9498f2008-04-23 11:09:14 -0700298 ret_val = e1000e_write_phy_reg_mdic(hw,
299 IGP01E1000_PHY_PAGE_SELECT,
300 (u16)offset);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700301 if (ret_val) {
302 hw->phy.ops.release_phy(hw);
303 return ret_val;
304 }
305 }
306
David Graham2d9498f2008-04-23 11:09:14 -0700307 ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
308 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700309
310 hw->phy.ops.release_phy(hw);
311
312 return ret_val;
313}
314
315/**
316 * e1000e_write_phy_reg_igp - Write igp PHY register
317 * @hw: pointer to the HW structure
318 * @offset: register offset to write to
319 * @data: data to write at register offset
320 *
321 * Acquires semaphore, if necessary, then writes the data to PHY register
322 * at the offset. Release any acquired semaphores before exiting.
323 **/
324s32 e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data)
325{
326 s32 ret_val;
327
328 ret_val = hw->phy.ops.acquire_phy(hw);
329 if (ret_val)
330 return ret_val;
331
332 if (offset > MAX_PHY_MULTI_PAGE_REG) {
David Graham2d9498f2008-04-23 11:09:14 -0700333 ret_val = e1000e_write_phy_reg_mdic(hw,
334 IGP01E1000_PHY_PAGE_SELECT,
335 (u16)offset);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700336 if (ret_val) {
337 hw->phy.ops.release_phy(hw);
338 return ret_val;
339 }
340 }
341
David Graham2d9498f2008-04-23 11:09:14 -0700342 ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
343 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700344
345 hw->phy.ops.release_phy(hw);
346
347 return ret_val;
348}
349
350/**
351 * e1000e_read_kmrn_reg - Read kumeran register
352 * @hw: pointer to the HW structure
353 * @offset: register offset to be read
354 * @data: pointer to the read data
355 *
356 * Acquires semaphore, if necessary. Then reads the PHY register at offset
357 * using the kumeran interface. The information retrieved is stored in data.
358 * Release any acquired semaphores before exiting.
359 **/
360s32 e1000e_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data)
361{
362 u32 kmrnctrlsta;
363 s32 ret_val;
364
365 ret_val = hw->phy.ops.acquire_phy(hw);
366 if (ret_val)
367 return ret_val;
368
369 kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
370 E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN;
371 ew32(KMRNCTRLSTA, kmrnctrlsta);
372
373 udelay(2);
374
375 kmrnctrlsta = er32(KMRNCTRLSTA);
376 *data = (u16)kmrnctrlsta;
377
378 hw->phy.ops.release_phy(hw);
379
380 return ret_val;
381}
382
383/**
384 * e1000e_write_kmrn_reg - Write kumeran register
385 * @hw: pointer to the HW structure
386 * @offset: register offset to write to
387 * @data: data to write at register offset
388 *
389 * Acquires semaphore, if necessary. Then write the data to PHY register
390 * at the offset using the kumeran interface. Release any acquired semaphores
391 * before exiting.
392 **/
393s32 e1000e_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data)
394{
395 u32 kmrnctrlsta;
396 s32 ret_val;
397
398 ret_val = hw->phy.ops.acquire_phy(hw);
399 if (ret_val)
400 return ret_val;
401
402 kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
403 E1000_KMRNCTRLSTA_OFFSET) | data;
404 ew32(KMRNCTRLSTA, kmrnctrlsta);
405
406 udelay(2);
407 hw->phy.ops.release_phy(hw);
408
409 return ret_val;
410}
411
412/**
413 * e1000e_copper_link_setup_m88 - Setup m88 PHY's for copper link
414 * @hw: pointer to the HW structure
415 *
416 * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock
417 * and downshift values are set also.
418 **/
419s32 e1000e_copper_link_setup_m88(struct e1000_hw *hw)
420{
421 struct e1000_phy_info *phy = &hw->phy;
422 s32 ret_val;
423 u16 phy_data;
424
Bruce Allanad680762008-03-28 09:15:03 -0700425 /* Enable CRS on Tx. This must be set for half-duplex operation. */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700426 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
427 if (ret_val)
428 return ret_val;
429
David Graham2d9498f2008-04-23 11:09:14 -0700430 /* For newer PHYs this bit is downshift enable */
431 if (phy->type == e1000_phy_m88)
432 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
Auke Kokbc7f75f2007-09-17 12:30:59 -0700433
Bruce Allanad680762008-03-28 09:15:03 -0700434 /*
435 * Options:
Auke Kokbc7f75f2007-09-17 12:30:59 -0700436 * MDI/MDI-X = 0 (default)
437 * 0 - Auto for all speeds
438 * 1 - MDI mode
439 * 2 - MDI-X mode
440 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
441 */
442 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
443
444 switch (phy->mdix) {
445 case 1:
446 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
447 break;
448 case 2:
449 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
450 break;
451 case 3:
452 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
453 break;
454 case 0:
455 default:
456 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
457 break;
458 }
459
Bruce Allanad680762008-03-28 09:15:03 -0700460 /*
461 * Options:
Auke Kokbc7f75f2007-09-17 12:30:59 -0700462 * disable_polarity_correction = 0 (default)
463 * Automatic Correction for Reversed Cable Polarity
464 * 0 - Disabled
465 * 1 - Enabled
466 */
467 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
468 if (phy->disable_polarity_correction == 1)
469 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
470
Bruce Allan97ac8ca2008-04-29 09:16:05 -0700471 /* Enable downshift on BM (disabled by default) */
472 if (phy->type == e1000_phy_bm)
473 phy_data |= BME1000_PSCR_ENABLE_DOWNSHIFT;
474
Auke Kokbc7f75f2007-09-17 12:30:59 -0700475 ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
476 if (ret_val)
477 return ret_val;
478
David Graham2d9498f2008-04-23 11:09:14 -0700479 if ((phy->type == e1000_phy_m88) && (phy->revision < 4)) {
Bruce Allanad680762008-03-28 09:15:03 -0700480 /*
481 * Force TX_CLK in the Extended PHY Specific Control Register
Auke Kokbc7f75f2007-09-17 12:30:59 -0700482 * to 25MHz clock.
483 */
484 ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
485 if (ret_val)
486 return ret_val;
487
488 phy_data |= M88E1000_EPSCR_TX_CLK_25;
489
490 if ((phy->revision == 2) &&
491 (phy->id == M88E1111_I_PHY_ID)) {
492 /* 82573L PHY - set the downshift counter to 5x. */
493 phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK;
494 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
495 } else {
496 /* Configure Master and Slave downshift values */
497 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
498 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
499 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
500 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
501 }
502 ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
503 if (ret_val)
504 return ret_val;
505 }
506
507 /* Commit the changes. */
508 ret_val = e1000e_commit_phy(hw);
509 if (ret_val)
510 hw_dbg(hw, "Error committing the PHY changes\n");
511
512 return ret_val;
513}
514
515/**
516 * e1000e_copper_link_setup_igp - Setup igp PHY's for copper link
517 * @hw: pointer to the HW structure
518 *
519 * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for
520 * igp PHY's.
521 **/
522s32 e1000e_copper_link_setup_igp(struct e1000_hw *hw)
523{
524 struct e1000_phy_info *phy = &hw->phy;
525 s32 ret_val;
526 u16 data;
527
528 ret_val = e1000_phy_hw_reset(hw);
529 if (ret_val) {
530 hw_dbg(hw, "Error resetting the PHY.\n");
531 return ret_val;
532 }
533
David Graham2d9498f2008-04-23 11:09:14 -0700534 /*
535 * Wait 100ms for MAC to configure PHY from NVM settings, to avoid
536 * timeout issues when LFS is enabled.
537 */
538 msleep(100);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700539
540 /* disable lplu d0 during driver init */
541 ret_val = e1000_set_d0_lplu_state(hw, 0);
542 if (ret_val) {
543 hw_dbg(hw, "Error Disabling LPLU D0\n");
544 return ret_val;
545 }
546 /* Configure mdi-mdix settings */
547 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &data);
548 if (ret_val)
549 return ret_val;
550
551 data &= ~IGP01E1000_PSCR_AUTO_MDIX;
552
553 switch (phy->mdix) {
554 case 1:
555 data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
556 break;
557 case 2:
558 data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
559 break;
560 case 0:
561 default:
562 data |= IGP01E1000_PSCR_AUTO_MDIX;
563 break;
564 }
565 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, data);
566 if (ret_val)
567 return ret_val;
568
569 /* set auto-master slave resolution settings */
570 if (hw->mac.autoneg) {
Bruce Allanad680762008-03-28 09:15:03 -0700571 /*
572 * when autonegotiation advertisement is only 1000Mbps then we
Auke Kokbc7f75f2007-09-17 12:30:59 -0700573 * should disable SmartSpeed and enable Auto MasterSlave
Bruce Allanad680762008-03-28 09:15:03 -0700574 * resolution as hardware default.
575 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700576 if (phy->autoneg_advertised == ADVERTISE_1000_FULL) {
577 /* Disable SmartSpeed */
578 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
Bruce Allanad680762008-03-28 09:15:03 -0700579 &data);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700580 if (ret_val)
581 return ret_val;
582
583 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
584 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
Bruce Allanad680762008-03-28 09:15:03 -0700585 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -0700586 if (ret_val)
587 return ret_val;
588
589 /* Set auto Master/Slave resolution process */
590 ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data);
591 if (ret_val)
592 return ret_val;
593
594 data &= ~CR_1000T_MS_ENABLE;
595 ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data);
596 if (ret_val)
597 return ret_val;
598 }
599
600 ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data);
601 if (ret_val)
602 return ret_val;
603
604 /* load defaults for future use */
605 phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ?
606 ((data & CR_1000T_MS_VALUE) ?
607 e1000_ms_force_master :
608 e1000_ms_force_slave) :
609 e1000_ms_auto;
610
611 switch (phy->ms_type) {
612 case e1000_ms_force_master:
613 data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
614 break;
615 case e1000_ms_force_slave:
616 data |= CR_1000T_MS_ENABLE;
617 data &= ~(CR_1000T_MS_VALUE);
618 break;
619 case e1000_ms_auto:
620 data &= ~CR_1000T_MS_ENABLE;
621 default:
622 break;
623 }
624 ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data);
625 }
626
627 return ret_val;
628}
629
630/**
631 * e1000_phy_setup_autoneg - Configure PHY for auto-negotiation
632 * @hw: pointer to the HW structure
633 *
634 * Reads the MII auto-neg advertisement register and/or the 1000T control
635 * register and if the PHY is already setup for auto-negotiation, then
636 * return successful. Otherwise, setup advertisement and flow control to
637 * the appropriate values for the wanted auto-negotiation.
638 **/
639static s32 e1000_phy_setup_autoneg(struct e1000_hw *hw)
640{
641 struct e1000_phy_info *phy = &hw->phy;
642 s32 ret_val;
643 u16 mii_autoneg_adv_reg;
644 u16 mii_1000t_ctrl_reg = 0;
645
646 phy->autoneg_advertised &= phy->autoneg_mask;
647
648 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
649 ret_val = e1e_rphy(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
650 if (ret_val)
651 return ret_val;
652
653 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
654 /* Read the MII 1000Base-T Control Register (Address 9). */
655 ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
656 if (ret_val)
657 return ret_val;
658 }
659
Bruce Allanad680762008-03-28 09:15:03 -0700660 /*
661 * Need to parse both autoneg_advertised and fc and set up
Auke Kokbc7f75f2007-09-17 12:30:59 -0700662 * the appropriate PHY registers. First we will parse for
663 * autoneg_advertised software override. Since we can advertise
664 * a plethora of combinations, we need to check each bit
665 * individually.
666 */
667
Bruce Allanad680762008-03-28 09:15:03 -0700668 /*
669 * First we clear all the 10/100 mb speed bits in the Auto-Neg
Auke Kokbc7f75f2007-09-17 12:30:59 -0700670 * Advertisement Register (Address 4) and the 1000 mb speed bits in
671 * the 1000Base-T Control Register (Address 9).
672 */
673 mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS |
674 NWAY_AR_100TX_HD_CAPS |
675 NWAY_AR_10T_FD_CAPS |
676 NWAY_AR_10T_HD_CAPS);
677 mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS);
678
679 hw_dbg(hw, "autoneg_advertised %x\n", phy->autoneg_advertised);
680
681 /* Do we want to advertise 10 Mb Half Duplex? */
682 if (phy->autoneg_advertised & ADVERTISE_10_HALF) {
683 hw_dbg(hw, "Advertise 10mb Half duplex\n");
684 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
685 }
686
687 /* Do we want to advertise 10 Mb Full Duplex? */
688 if (phy->autoneg_advertised & ADVERTISE_10_FULL) {
689 hw_dbg(hw, "Advertise 10mb Full duplex\n");
690 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
691 }
692
693 /* Do we want to advertise 100 Mb Half Duplex? */
694 if (phy->autoneg_advertised & ADVERTISE_100_HALF) {
695 hw_dbg(hw, "Advertise 100mb Half duplex\n");
696 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
697 }
698
699 /* Do we want to advertise 100 Mb Full Duplex? */
700 if (phy->autoneg_advertised & ADVERTISE_100_FULL) {
701 hw_dbg(hw, "Advertise 100mb Full duplex\n");
702 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
703 }
704
705 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
706 if (phy->autoneg_advertised & ADVERTISE_1000_HALF)
707 hw_dbg(hw, "Advertise 1000mb Half duplex request denied!\n");
708
709 /* Do we want to advertise 1000 Mb Full Duplex? */
710 if (phy->autoneg_advertised & ADVERTISE_1000_FULL) {
711 hw_dbg(hw, "Advertise 1000mb Full duplex\n");
712 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
713 }
714
Bruce Allanad680762008-03-28 09:15:03 -0700715 /*
716 * Check for a software override of the flow control settings, and
Auke Kokbc7f75f2007-09-17 12:30:59 -0700717 * setup the PHY advertisement registers accordingly. If
718 * auto-negotiation is enabled, then software will have to set the
719 * "PAUSE" bits to the correct value in the Auto-Negotiation
720 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-
721 * negotiation.
722 *
723 * The possible values of the "fc" parameter are:
724 * 0: Flow control is completely disabled
725 * 1: Rx flow control is enabled (we can receive pause frames
726 * but not send pause frames).
727 * 2: Tx flow control is enabled (we can send pause frames
728 * but we do not support receiving pause frames).
Bruce Allanad680762008-03-28 09:15:03 -0700729 * 3: Both Rx and Tx flow control (symmetric) are enabled.
Auke Kokbc7f75f2007-09-17 12:30:59 -0700730 * other: No software override. The flow control configuration
731 * in the EEPROM is used.
732 */
Jeff Kirsher318a94d2008-03-28 09:15:16 -0700733 switch (hw->fc.type) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700734 case e1000_fc_none:
Bruce Allanad680762008-03-28 09:15:03 -0700735 /*
736 * Flow control (Rx & Tx) is completely disabled by a
Auke Kokbc7f75f2007-09-17 12:30:59 -0700737 * software over-ride.
738 */
739 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
740 break;
741 case e1000_fc_rx_pause:
Bruce Allanad680762008-03-28 09:15:03 -0700742 /*
743 * Rx Flow control is enabled, and Tx Flow control is
Auke Kokbc7f75f2007-09-17 12:30:59 -0700744 * disabled, by a software over-ride.
Bruce Allanad680762008-03-28 09:15:03 -0700745 *
746 * Since there really isn't a way to advertise that we are
747 * capable of Rx Pause ONLY, we will advertise that we
748 * support both symmetric and asymmetric Rx PAUSE. Later
Auke Kokbc7f75f2007-09-17 12:30:59 -0700749 * (in e1000e_config_fc_after_link_up) we will disable the
750 * hw's ability to send PAUSE frames.
751 */
752 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
753 break;
754 case e1000_fc_tx_pause:
Bruce Allanad680762008-03-28 09:15:03 -0700755 /*
756 * Tx Flow control is enabled, and Rx Flow control is
Auke Kokbc7f75f2007-09-17 12:30:59 -0700757 * disabled, by a software over-ride.
758 */
759 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
760 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
761 break;
762 case e1000_fc_full:
Bruce Allanad680762008-03-28 09:15:03 -0700763 /*
764 * Flow control (both Rx and Tx) is enabled by a software
Auke Kokbc7f75f2007-09-17 12:30:59 -0700765 * over-ride.
766 */
767 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
768 break;
769 default:
770 hw_dbg(hw, "Flow control param set incorrectly\n");
771 ret_val = -E1000_ERR_CONFIG;
772 return ret_val;
773 }
774
775 ret_val = e1e_wphy(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
776 if (ret_val)
777 return ret_val;
778
779 hw_dbg(hw, "Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
780
781 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
782 ret_val = e1e_wphy(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg);
783 }
784
785 return ret_val;
786}
787
788/**
789 * e1000_copper_link_autoneg - Setup/Enable autoneg for copper link
790 * @hw: pointer to the HW structure
791 *
792 * Performs initial bounds checking on autoneg advertisement parameter, then
793 * configure to advertise the full capability. Setup the PHY to autoneg
794 * and restart the negotiation process between the link partner. If
Bruce Allanad680762008-03-28 09:15:03 -0700795 * autoneg_wait_to_complete, then wait for autoneg to complete before exiting.
Auke Kokbc7f75f2007-09-17 12:30:59 -0700796 **/
797static s32 e1000_copper_link_autoneg(struct e1000_hw *hw)
798{
799 struct e1000_phy_info *phy = &hw->phy;
800 s32 ret_val;
801 u16 phy_ctrl;
802
Bruce Allanad680762008-03-28 09:15:03 -0700803 /*
804 * Perform some bounds checking on the autoneg advertisement
Auke Kokbc7f75f2007-09-17 12:30:59 -0700805 * parameter.
806 */
807 phy->autoneg_advertised &= phy->autoneg_mask;
808
Bruce Allanad680762008-03-28 09:15:03 -0700809 /*
810 * If autoneg_advertised is zero, we assume it was not defaulted
Auke Kokbc7f75f2007-09-17 12:30:59 -0700811 * by the calling code so we set to advertise full capability.
812 */
813 if (phy->autoneg_advertised == 0)
814 phy->autoneg_advertised = phy->autoneg_mask;
815
816 hw_dbg(hw, "Reconfiguring auto-neg advertisement params\n");
817 ret_val = e1000_phy_setup_autoneg(hw);
818 if (ret_val) {
819 hw_dbg(hw, "Error Setting up Auto-Negotiation\n");
820 return ret_val;
821 }
822 hw_dbg(hw, "Restarting Auto-Neg\n");
823
Bruce Allanad680762008-03-28 09:15:03 -0700824 /*
825 * Restart auto-negotiation by setting the Auto Neg Enable bit and
Auke Kokbc7f75f2007-09-17 12:30:59 -0700826 * the Auto Neg Restart bit in the PHY control register.
827 */
828 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl);
829 if (ret_val)
830 return ret_val;
831
832 phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
833 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl);
834 if (ret_val)
835 return ret_val;
836
Bruce Allanad680762008-03-28 09:15:03 -0700837 /*
838 * Does the user want to wait for Auto-Neg to complete here, or
Auke Kokbc7f75f2007-09-17 12:30:59 -0700839 * check at a later time (for example, callback routine).
840 */
Jeff Kirsher318a94d2008-03-28 09:15:16 -0700841 if (phy->autoneg_wait_to_complete) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700842 ret_val = e1000_wait_autoneg(hw);
843 if (ret_val) {
844 hw_dbg(hw, "Error while waiting for "
845 "autoneg to complete\n");
846 return ret_val;
847 }
848 }
849
850 hw->mac.get_link_status = 1;
851
852 return ret_val;
853}
854
855/**
856 * e1000e_setup_copper_link - Configure copper link settings
857 * @hw: pointer to the HW structure
858 *
859 * Calls the appropriate function to configure the link for auto-neg or forced
860 * speed and duplex. Then we check for link, once link is established calls
861 * to configure collision distance and flow control are called. If link is
862 * not established, we return -E1000_ERR_PHY (-2).
863 **/
864s32 e1000e_setup_copper_link(struct e1000_hw *hw)
865{
866 s32 ret_val;
867 bool link;
868
869 if (hw->mac.autoneg) {
Bruce Allanad680762008-03-28 09:15:03 -0700870 /*
871 * Setup autoneg and flow control advertisement and perform
872 * autonegotiation.
873 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700874 ret_val = e1000_copper_link_autoneg(hw);
875 if (ret_val)
876 return ret_val;
877 } else {
Bruce Allanad680762008-03-28 09:15:03 -0700878 /*
879 * PHY will be set to 10H, 10F, 100H or 100F
880 * depending on user settings.
881 */
Auke Kokbc7f75f2007-09-17 12:30:59 -0700882 hw_dbg(hw, "Forcing Speed and Duplex\n");
883 ret_val = e1000_phy_force_speed_duplex(hw);
884 if (ret_val) {
885 hw_dbg(hw, "Error Forcing Speed and Duplex\n");
886 return ret_val;
887 }
888 }
889
Bruce Allanad680762008-03-28 09:15:03 -0700890 /*
891 * Check link status. Wait up to 100 microseconds for link to become
Auke Kokbc7f75f2007-09-17 12:30:59 -0700892 * valid.
893 */
894 ret_val = e1000e_phy_has_link_generic(hw,
895 COPPER_LINK_UP_LIMIT,
896 10,
897 &link);
898 if (ret_val)
899 return ret_val;
900
901 if (link) {
902 hw_dbg(hw, "Valid link established!!!\n");
903 e1000e_config_collision_dist(hw);
904 ret_val = e1000e_config_fc_after_link_up(hw);
905 } else {
906 hw_dbg(hw, "Unable to establish link!!!\n");
907 }
908
909 return ret_val;
910}
911
912/**
913 * e1000e_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY
914 * @hw: pointer to the HW structure
915 *
916 * Calls the PHY setup function to force speed and duplex. Clears the
917 * auto-crossover to force MDI manually. Waits for link and returns
918 * successful if link up is successful, else -E1000_ERR_PHY (-2).
919 **/
920s32 e1000e_phy_force_speed_duplex_igp(struct e1000_hw *hw)
921{
922 struct e1000_phy_info *phy = &hw->phy;
923 s32 ret_val;
924 u16 phy_data;
925 bool link;
926
927 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
928 if (ret_val)
929 return ret_val;
930
931 e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
932
933 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
934 if (ret_val)
935 return ret_val;
936
Bruce Allanad680762008-03-28 09:15:03 -0700937 /*
938 * Clear Auto-Crossover to force MDI manually. IGP requires MDI
Auke Kokbc7f75f2007-09-17 12:30:59 -0700939 * forced whenever speed and duplex are forced.
940 */
941 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
942 if (ret_val)
943 return ret_val;
944
945 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
946 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
947
948 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
949 if (ret_val)
950 return ret_val;
951
952 hw_dbg(hw, "IGP PSCR: %X\n", phy_data);
953
954 udelay(1);
955
Jeff Kirsher318a94d2008-03-28 09:15:16 -0700956 if (phy->autoneg_wait_to_complete) {
Auke Kokbc7f75f2007-09-17 12:30:59 -0700957 hw_dbg(hw, "Waiting for forced speed/duplex link on IGP phy.\n");
958
959 ret_val = e1000e_phy_has_link_generic(hw,
960 PHY_FORCE_LIMIT,
961 100000,
962 &link);
963 if (ret_val)
964 return ret_val;
965
966 if (!link)
967 hw_dbg(hw, "Link taking longer than expected.\n");
968
969 /* Try once more */
970 ret_val = e1000e_phy_has_link_generic(hw,
971 PHY_FORCE_LIMIT,
972 100000,
973 &link);
974 if (ret_val)
975 return ret_val;
976 }
977
978 return ret_val;
979}
980
981/**
982 * e1000e_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY
983 * @hw: pointer to the HW structure
984 *
985 * Calls the PHY setup function to force speed and duplex. Clears the
986 * auto-crossover to force MDI manually. Resets the PHY to commit the
987 * changes. If time expires while waiting for link up, we reset the DSP.
Bruce Allanad680762008-03-28 09:15:03 -0700988 * After reset, TX_CLK and CRS on Tx must be set. Return successful upon
Auke Kokbc7f75f2007-09-17 12:30:59 -0700989 * successful completion, else return corresponding error code.
990 **/
991s32 e1000e_phy_force_speed_duplex_m88(struct e1000_hw *hw)
992{
993 struct e1000_phy_info *phy = &hw->phy;
994 s32 ret_val;
995 u16 phy_data;
996 bool link;
997
Bruce Allanad680762008-03-28 09:15:03 -0700998 /*
999 * Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI
Auke Kokbc7f75f2007-09-17 12:30:59 -07001000 * forced whenever speed and duplex are forced.
1001 */
1002 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1003 if (ret_val)
1004 return ret_val;
1005
1006 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1007 ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1008 if (ret_val)
1009 return ret_val;
1010
1011 hw_dbg(hw, "M88E1000 PSCR: %X\n", phy_data);
1012
1013 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
1014 if (ret_val)
1015 return ret_val;
1016
1017 e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
1018
1019 /* Reset the phy to commit changes. */
1020 phy_data |= MII_CR_RESET;
1021
1022 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
1023 if (ret_val)
1024 return ret_val;
1025
1026 udelay(1);
1027
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001028 if (phy->autoneg_wait_to_complete) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001029 hw_dbg(hw, "Waiting for forced speed/duplex link on M88 phy.\n");
1030
1031 ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
1032 100000, &link);
1033 if (ret_val)
1034 return ret_val;
1035
1036 if (!link) {
Bruce Allanad680762008-03-28 09:15:03 -07001037 /*
1038 * We didn't get link.
Auke Kokbc7f75f2007-09-17 12:30:59 -07001039 * Reset the DSP and cross our fingers.
1040 */
Bruce Allanad680762008-03-28 09:15:03 -07001041 ret_val = e1e_wphy(hw, M88E1000_PHY_PAGE_SELECT,
1042 0x001d);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001043 if (ret_val)
1044 return ret_val;
1045 ret_val = e1000e_phy_reset_dsp(hw);
1046 if (ret_val)
1047 return ret_val;
1048 }
1049
1050 /* Try once more */
1051 ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
1052 100000, &link);
1053 if (ret_val)
1054 return ret_val;
1055 }
1056
1057 ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1058 if (ret_val)
1059 return ret_val;
1060
Bruce Allanad680762008-03-28 09:15:03 -07001061 /*
1062 * Resetting the phy means we need to re-force TX_CLK in the
Auke Kokbc7f75f2007-09-17 12:30:59 -07001063 * Extended PHY Specific Control Register to 25MHz clock from
1064 * the reset value of 2.5MHz.
1065 */
1066 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1067 ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1068 if (ret_val)
1069 return ret_val;
1070
Bruce Allanad680762008-03-28 09:15:03 -07001071 /*
1072 * In addition, we must re-enable CRS on Tx for both half and full
Auke Kokbc7f75f2007-09-17 12:30:59 -07001073 * duplex.
1074 */
1075 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1076 if (ret_val)
1077 return ret_val;
1078
1079 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1080 ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1081
1082 return ret_val;
1083}
1084
1085/**
1086 * e1000e_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex
1087 * @hw: pointer to the HW structure
1088 * @phy_ctrl: pointer to current value of PHY_CONTROL
1089 *
1090 * Forces speed and duplex on the PHY by doing the following: disable flow
1091 * control, force speed/duplex on the MAC, disable auto speed detection,
1092 * disable auto-negotiation, configure duplex, configure speed, configure
1093 * the collision distance, write configuration to CTRL register. The
1094 * caller must write to the PHY_CONTROL register for these settings to
1095 * take affect.
1096 **/
1097void e1000e_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl)
1098{
1099 struct e1000_mac_info *mac = &hw->mac;
1100 u32 ctrl;
1101
1102 /* Turn off flow control when forcing speed/duplex */
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001103 hw->fc.type = e1000_fc_none;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001104
1105 /* Force speed/duplex on the mac */
1106 ctrl = er32(CTRL);
1107 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1108 ctrl &= ~E1000_CTRL_SPD_SEL;
1109
1110 /* Disable Auto Speed Detection */
1111 ctrl &= ~E1000_CTRL_ASDE;
1112
1113 /* Disable autoneg on the phy */
1114 *phy_ctrl &= ~MII_CR_AUTO_NEG_EN;
1115
1116 /* Forcing Full or Half Duplex? */
1117 if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) {
1118 ctrl &= ~E1000_CTRL_FD;
1119 *phy_ctrl &= ~MII_CR_FULL_DUPLEX;
1120 hw_dbg(hw, "Half Duplex\n");
1121 } else {
1122 ctrl |= E1000_CTRL_FD;
1123 *phy_ctrl |= MII_CR_FULL_DUPLEX;
1124 hw_dbg(hw, "Full Duplex\n");
1125 }
1126
1127 /* Forcing 10mb or 100mb? */
1128 if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) {
1129 ctrl |= E1000_CTRL_SPD_100;
1130 *phy_ctrl |= MII_CR_SPEED_100;
1131 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1132 hw_dbg(hw, "Forcing 100mb\n");
1133 } else {
1134 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1135 *phy_ctrl |= MII_CR_SPEED_10;
1136 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1137 hw_dbg(hw, "Forcing 10mb\n");
1138 }
1139
1140 e1000e_config_collision_dist(hw);
1141
1142 ew32(CTRL, ctrl);
1143}
1144
1145/**
1146 * e1000e_set_d3_lplu_state - Sets low power link up state for D3
1147 * @hw: pointer to the HW structure
1148 * @active: boolean used to enable/disable lplu
1149 *
1150 * Success returns 0, Failure returns 1
1151 *
1152 * The low power link up (lplu) state is set to the power management level D3
1153 * and SmartSpeed is disabled when active is true, else clear lplu for D3
1154 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1155 * is used during Dx states where the power conservation is most important.
1156 * During driver activity, SmartSpeed should be enabled so performance is
1157 * maintained.
1158 **/
1159s32 e1000e_set_d3_lplu_state(struct e1000_hw *hw, bool active)
1160{
1161 struct e1000_phy_info *phy = &hw->phy;
1162 s32 ret_val;
1163 u16 data;
1164
1165 ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
1166 if (ret_val)
1167 return ret_val;
1168
1169 if (!active) {
1170 data &= ~IGP02E1000_PM_D3_LPLU;
David Graham2d9498f2008-04-23 11:09:14 -07001171 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001172 if (ret_val)
1173 return ret_val;
Bruce Allanad680762008-03-28 09:15:03 -07001174 /*
1175 * LPLU and SmartSpeed are mutually exclusive. LPLU is used
Auke Kokbc7f75f2007-09-17 12:30:59 -07001176 * during Dx states where the power conservation is most
1177 * important. During driver activity we should enable
Bruce Allanad680762008-03-28 09:15:03 -07001178 * SmartSpeed, so performance is maintained.
1179 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001180 if (phy->smart_speed == e1000_smart_speed_on) {
1181 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
Bruce Allanad680762008-03-28 09:15:03 -07001182 &data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001183 if (ret_val)
1184 return ret_val;
1185
1186 data |= IGP01E1000_PSCFR_SMART_SPEED;
1187 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
Bruce Allanad680762008-03-28 09:15:03 -07001188 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001189 if (ret_val)
1190 return ret_val;
1191 } else if (phy->smart_speed == e1000_smart_speed_off) {
1192 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
Bruce Allanad680762008-03-28 09:15:03 -07001193 &data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001194 if (ret_val)
1195 return ret_val;
1196
1197 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1198 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
Bruce Allanad680762008-03-28 09:15:03 -07001199 data);
Auke Kokbc7f75f2007-09-17 12:30:59 -07001200 if (ret_val)
1201 return ret_val;
1202 }
1203 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1204 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1205 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1206 data |= IGP02E1000_PM_D3_LPLU;
1207 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
1208 if (ret_val)
1209 return ret_val;
1210
1211 /* When LPLU is enabled, we should disable SmartSpeed */
1212 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
1213 if (ret_val)
1214 return ret_val;
1215
1216 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1217 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
1218 }
1219
1220 return ret_val;
1221}
1222
1223/**
Auke Kok489815c2008-02-21 15:11:07 -08001224 * e1000e_check_downshift - Checks whether a downshift in speed occurred
Auke Kokbc7f75f2007-09-17 12:30:59 -07001225 * @hw: pointer to the HW structure
1226 *
1227 * Success returns 0, Failure returns 1
1228 *
1229 * A downshift is detected by querying the PHY link health.
1230 **/
1231s32 e1000e_check_downshift(struct e1000_hw *hw)
1232{
1233 struct e1000_phy_info *phy = &hw->phy;
1234 s32 ret_val;
1235 u16 phy_data, offset, mask;
1236
1237 switch (phy->type) {
1238 case e1000_phy_m88:
1239 case e1000_phy_gg82563:
1240 offset = M88E1000_PHY_SPEC_STATUS;
1241 mask = M88E1000_PSSR_DOWNSHIFT;
1242 break;
1243 case e1000_phy_igp_2:
1244 case e1000_phy_igp_3:
1245 offset = IGP01E1000_PHY_LINK_HEALTH;
1246 mask = IGP01E1000_PLHR_SS_DOWNGRADE;
1247 break;
1248 default:
1249 /* speed downshift not supported */
1250 phy->speed_downgraded = 0;
1251 return 0;
1252 }
1253
1254 ret_val = e1e_rphy(hw, offset, &phy_data);
1255
1256 if (!ret_val)
1257 phy->speed_downgraded = (phy_data & mask);
1258
1259 return ret_val;
1260}
1261
1262/**
1263 * e1000_check_polarity_m88 - Checks the polarity.
1264 * @hw: pointer to the HW structure
1265 *
1266 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1267 *
1268 * Polarity is determined based on the PHY specific status register.
1269 **/
1270static s32 e1000_check_polarity_m88(struct e1000_hw *hw)
1271{
1272 struct e1000_phy_info *phy = &hw->phy;
1273 s32 ret_val;
1274 u16 data;
1275
1276 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &data);
1277
1278 if (!ret_val)
1279 phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY)
1280 ? e1000_rev_polarity_reversed
1281 : e1000_rev_polarity_normal;
1282
1283 return ret_val;
1284}
1285
1286/**
1287 * e1000_check_polarity_igp - Checks the polarity.
1288 * @hw: pointer to the HW structure
1289 *
1290 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1291 *
1292 * Polarity is determined based on the PHY port status register, and the
1293 * current speed (since there is no polarity at 100Mbps).
1294 **/
1295static s32 e1000_check_polarity_igp(struct e1000_hw *hw)
1296{
1297 struct e1000_phy_info *phy = &hw->phy;
1298 s32 ret_val;
1299 u16 data, offset, mask;
1300
Bruce Allanad680762008-03-28 09:15:03 -07001301 /*
1302 * Polarity is determined based on the speed of
1303 * our connection.
1304 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001305 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data);
1306 if (ret_val)
1307 return ret_val;
1308
1309 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
1310 IGP01E1000_PSSR_SPEED_1000MBPS) {
1311 offset = IGP01E1000_PHY_PCS_INIT_REG;
1312 mask = IGP01E1000_PHY_POLARITY_MASK;
1313 } else {
Bruce Allanad680762008-03-28 09:15:03 -07001314 /*
1315 * This really only applies to 10Mbps since
Auke Kokbc7f75f2007-09-17 12:30:59 -07001316 * there is no polarity for 100Mbps (always 0).
1317 */
1318 offset = IGP01E1000_PHY_PORT_STATUS;
1319 mask = IGP01E1000_PSSR_POLARITY_REVERSED;
1320 }
1321
1322 ret_val = e1e_rphy(hw, offset, &data);
1323
1324 if (!ret_val)
1325 phy->cable_polarity = (data & mask)
1326 ? e1000_rev_polarity_reversed
1327 : e1000_rev_polarity_normal;
1328
1329 return ret_val;
1330}
1331
1332/**
Bruce Allanad680762008-03-28 09:15:03 -07001333 * e1000_wait_autoneg - Wait for auto-neg completion
Auke Kokbc7f75f2007-09-17 12:30:59 -07001334 * @hw: pointer to the HW structure
1335 *
1336 * Waits for auto-negotiation to complete or for the auto-negotiation time
1337 * limit to expire, which ever happens first.
1338 **/
1339static s32 e1000_wait_autoneg(struct e1000_hw *hw)
1340{
1341 s32 ret_val = 0;
1342 u16 i, phy_status;
1343
1344 /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */
1345 for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) {
1346 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1347 if (ret_val)
1348 break;
1349 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1350 if (ret_val)
1351 break;
1352 if (phy_status & MII_SR_AUTONEG_COMPLETE)
1353 break;
1354 msleep(100);
1355 }
1356
Bruce Allanad680762008-03-28 09:15:03 -07001357 /*
1358 * PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation
Auke Kokbc7f75f2007-09-17 12:30:59 -07001359 * has completed.
1360 */
1361 return ret_val;
1362}
1363
1364/**
1365 * e1000e_phy_has_link_generic - Polls PHY for link
1366 * @hw: pointer to the HW structure
1367 * @iterations: number of times to poll for link
1368 * @usec_interval: delay between polling attempts
1369 * @success: pointer to whether polling was successful or not
1370 *
1371 * Polls the PHY status register for link, 'iterations' number of times.
1372 **/
1373s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
1374 u32 usec_interval, bool *success)
1375{
1376 s32 ret_val = 0;
1377 u16 i, phy_status;
1378
1379 for (i = 0; i < iterations; i++) {
Bruce Allanad680762008-03-28 09:15:03 -07001380 /*
1381 * Some PHYs require the PHY_STATUS register to be read
Auke Kokbc7f75f2007-09-17 12:30:59 -07001382 * twice due to the link bit being sticky. No harm doing
1383 * it across the board.
1384 */
1385 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1386 if (ret_val)
1387 break;
1388 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1389 if (ret_val)
1390 break;
1391 if (phy_status & MII_SR_LINK_STATUS)
1392 break;
1393 if (usec_interval >= 1000)
1394 mdelay(usec_interval/1000);
1395 else
1396 udelay(usec_interval);
1397 }
1398
1399 *success = (i < iterations);
1400
1401 return ret_val;
1402}
1403
1404/**
1405 * e1000e_get_cable_length_m88 - Determine cable length for m88 PHY
1406 * @hw: pointer to the HW structure
1407 *
1408 * Reads the PHY specific status register to retrieve the cable length
1409 * information. The cable length is determined by averaging the minimum and
1410 * maximum values to get the "average" cable length. The m88 PHY has four
1411 * possible cable length values, which are:
1412 * Register Value Cable Length
1413 * 0 < 50 meters
1414 * 1 50 - 80 meters
1415 * 2 80 - 110 meters
1416 * 3 110 - 140 meters
1417 * 4 > 140 meters
1418 **/
1419s32 e1000e_get_cable_length_m88(struct e1000_hw *hw)
1420{
1421 struct e1000_phy_info *phy = &hw->phy;
1422 s32 ret_val;
1423 u16 phy_data, index;
1424
1425 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1426 if (ret_val)
1427 return ret_val;
1428
1429 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
1430 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
1431 phy->min_cable_length = e1000_m88_cable_length_table[index];
1432 phy->max_cable_length = e1000_m88_cable_length_table[index+1];
1433
1434 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1435
1436 return ret_val;
1437}
1438
1439/**
1440 * e1000e_get_cable_length_igp_2 - Determine cable length for igp2 PHY
1441 * @hw: pointer to the HW structure
1442 *
1443 * The automatic gain control (agc) normalizes the amplitude of the
1444 * received signal, adjusting for the attenuation produced by the
Auke Kok489815c2008-02-21 15:11:07 -08001445 * cable. By reading the AGC registers, which represent the
1446 * combination of course and fine gain value, the value can be put
Auke Kokbc7f75f2007-09-17 12:30:59 -07001447 * into a lookup table to obtain the approximate cable length
1448 * for each channel.
1449 **/
1450s32 e1000e_get_cable_length_igp_2(struct e1000_hw *hw)
1451{
1452 struct e1000_phy_info *phy = &hw->phy;
1453 s32 ret_val;
1454 u16 phy_data, i, agc_value = 0;
1455 u16 cur_agc_index, max_agc_index = 0;
1456 u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1;
1457 u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] =
1458 {IGP02E1000_PHY_AGC_A,
1459 IGP02E1000_PHY_AGC_B,
1460 IGP02E1000_PHY_AGC_C,
1461 IGP02E1000_PHY_AGC_D};
1462
1463 /* Read the AGC registers for all channels */
1464 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
1465 ret_val = e1e_rphy(hw, agc_reg_array[i], &phy_data);
1466 if (ret_val)
1467 return ret_val;
1468
Bruce Allanad680762008-03-28 09:15:03 -07001469 /*
1470 * Getting bits 15:9, which represent the combination of
Auke Kokbc7f75f2007-09-17 12:30:59 -07001471 * course and fine gain values. The result is a number
1472 * that can be put into the lookup table to obtain the
Bruce Allanad680762008-03-28 09:15:03 -07001473 * approximate cable length.
1474 */
Auke Kokbc7f75f2007-09-17 12:30:59 -07001475 cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
1476 IGP02E1000_AGC_LENGTH_MASK;
1477
1478 /* Array index bound check. */
1479 if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) ||
1480 (cur_agc_index == 0))
1481 return -E1000_ERR_PHY;
1482
1483 /* Remove min & max AGC values from calculation. */
1484 if (e1000_igp_2_cable_length_table[min_agc_index] >
1485 e1000_igp_2_cable_length_table[cur_agc_index])
1486 min_agc_index = cur_agc_index;
1487 if (e1000_igp_2_cable_length_table[max_agc_index] <
1488 e1000_igp_2_cable_length_table[cur_agc_index])
1489 max_agc_index = cur_agc_index;
1490
1491 agc_value += e1000_igp_2_cable_length_table[cur_agc_index];
1492 }
1493
1494 agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] +
1495 e1000_igp_2_cable_length_table[max_agc_index]);
1496 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
1497
1498 /* Calculate cable length with the error range of +/- 10 meters. */
1499 phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
1500 (agc_value - IGP02E1000_AGC_RANGE) : 0;
1501 phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE;
1502
1503 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1504
1505 return ret_val;
1506}
1507
1508/**
1509 * e1000e_get_phy_info_m88 - Retrieve PHY information
1510 * @hw: pointer to the HW structure
1511 *
1512 * Valid for only copper links. Read the PHY status register (sticky read)
1513 * to verify that link is up. Read the PHY special control register to
1514 * determine the polarity and 10base-T extended distance. Read the PHY
1515 * special status register to determine MDI/MDIx and current speed. If
1516 * speed is 1000, then determine cable length, local and remote receiver.
1517 **/
1518s32 e1000e_get_phy_info_m88(struct e1000_hw *hw)
1519{
1520 struct e1000_phy_info *phy = &hw->phy;
1521 s32 ret_val;
1522 u16 phy_data;
1523 bool link;
1524
Jeff Kirsher318a94d2008-03-28 09:15:16 -07001525 if (hw->phy.media_type != e1000_media_type_copper) {
Auke Kokbc7f75f2007-09-17 12:30:59 -07001526 hw_dbg(hw, "Phy info is only valid for copper media\n");
1527 return -E1000_ERR_CONFIG;
1528 }
1529
1530 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
1531 if (ret_val)
1532 return ret_val;
1533
1534 if (!link) {
1535 hw_dbg(hw, "Phy info is only valid if link is up\n");
1536 return -E1000_ERR_CONFIG;
1537 }
1538
1539 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1540 if (ret_val)
1541 return ret_val;
1542
1543 phy->polarity_correction = (phy_data &
1544 M88E1000_PSCR_POLARITY_REVERSAL);
1545
1546 ret_val = e1000_check_polarity_m88(hw);
1547 if (ret_val)
1548 return ret_val;
1549
1550 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1551 if (ret_val)
1552 return ret_val;
1553
1554 phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX);
1555
1556 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
1557 ret_val = e1000_get_cable_length(hw);
1558 if (ret_val)
1559 return ret_val;
1560
1561 ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &phy_data);
1562 if (ret_val)
1563 return ret_val;
1564
1565 phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS)
1566 ? e1000_1000t_rx_status_ok
1567 : e1000_1000t_rx_status_not_ok;
1568
1569 phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS)
1570 ? e1000_1000t_rx_status_ok
1571 : e1000_1000t_rx_status_not_ok;
1572 } else {
1573 /* Set values to "undefined" */
1574 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
1575 phy->local_rx = e1000_1000t_rx_status_undefined;
1576 phy->remote_rx = e1000_1000t_rx_status_undefined;
1577 }
1578
1579 return ret_val;
1580}
1581
1582/**
1583 * e1000e_get_phy_info_igp - Retrieve igp PHY information
1584 * @hw: pointer to the HW structure
1585 *
1586 * Read PHY status to determine if link is up. If link is up, then
1587 * set/determine 10base-T extended distance and polarity correction. Read
1588 * PHY port status to determine MDI/MDIx and speed. Based on the speed,
1589 * determine on the cable length, local and remote receiver.
1590 **/
1591s32 e1000e_get_phy_info_igp(struct e1000_hw *hw)
1592{
1593 struct e1000_phy_info *phy = &hw->phy;
1594 s32 ret_val;
1595 u16 data;
1596 bool link;
1597
1598 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
1599 if (ret_val)
1600 return ret_val;
1601
1602 if (!link) {
1603 hw_dbg(hw, "Phy info is only valid if link is up\n");
1604 return -E1000_ERR_CONFIG;
1605 }
1606
1607 phy->polarity_correction = 1;
1608
1609 ret_val = e1000_check_polarity_igp(hw);
1610 if (ret_val)
1611 return ret_val;
1612
1613 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data);
1614 if (ret_val)
1615 return ret_val;
1616
1617 phy->is_mdix = (data & IGP01E1000_PSSR_MDIX);
1618
1619 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
1620 IGP01E1000_PSSR_SPEED_1000MBPS) {
1621 ret_val = e1000_get_cable_length(hw);
1622 if (ret_val)
1623 return ret_val;
1624
1625 ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &data);
1626 if (ret_val)
1627 return ret_val;
1628
1629 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
1630 ? e1000_1000t_rx_status_ok
1631 : e1000_1000t_rx_status_not_ok;
1632
1633 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
1634 ? e1000_1000t_rx_status_ok
1635 : e1000_1000t_rx_status_not_ok;
1636 } else {
1637 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
1638 phy->local_rx = e1000_1000t_rx_status_undefined;
1639 phy->remote_rx = e1000_1000t_rx_status_undefined;
1640 }
1641
1642 return ret_val;
1643}
1644
1645/**
1646 * e1000e_phy_sw_reset - PHY software reset
1647 * @hw: pointer to the HW structure
1648 *
1649 * Does a software reset of the PHY by reading the PHY control register and
1650 * setting/write the control register reset bit to the PHY.
1651 **/
1652s32 e1000e_phy_sw_reset(struct e1000_hw *hw)
1653{
1654 s32 ret_val;
1655 u16 phy_ctrl;
1656
1657 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl);
1658 if (ret_val)
1659 return ret_val;
1660
1661 phy_ctrl |= MII_CR_RESET;
1662 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl);
1663 if (ret_val)
1664 return ret_val;
1665
1666 udelay(1);
1667
1668 return ret_val;
1669}
1670
1671/**
1672 * e1000e_phy_hw_reset_generic - PHY hardware reset
1673 * @hw: pointer to the HW structure
1674 *
1675 * Verify the reset block is not blocking us from resetting. Acquire
1676 * semaphore (if necessary) and read/set/write the device control reset
1677 * bit in the PHY. Wait the appropriate delay time for the device to
Auke Kok489815c2008-02-21 15:11:07 -08001678 * reset and release the semaphore (if necessary).
Auke Kokbc7f75f2007-09-17 12:30:59 -07001679 **/
1680s32 e1000e_phy_hw_reset_generic(struct e1000_hw *hw)
1681{
1682 struct e1000_phy_info *phy = &hw->phy;
1683 s32 ret_val;
1684 u32 ctrl;
1685
1686 ret_val = e1000_check_reset_block(hw);
1687 if (ret_val)
1688 return 0;
1689
1690 ret_val = phy->ops.acquire_phy(hw);
1691 if (ret_val)
1692 return ret_val;
1693
1694 ctrl = er32(CTRL);
1695 ew32(CTRL, ctrl | E1000_CTRL_PHY_RST);
1696 e1e_flush();
1697
1698 udelay(phy->reset_delay_us);
1699
1700 ew32(CTRL, ctrl);
1701 e1e_flush();
1702
1703 udelay(150);
1704
1705 phy->ops.release_phy(hw);
1706
1707 return e1000_get_phy_cfg_done(hw);
1708}
1709
1710/**
1711 * e1000e_get_cfg_done - Generic configuration done
1712 * @hw: pointer to the HW structure
1713 *
1714 * Generic function to wait 10 milli-seconds for configuration to complete
1715 * and return success.
1716 **/
1717s32 e1000e_get_cfg_done(struct e1000_hw *hw)
1718{
1719 mdelay(10);
1720 return 0;
1721}
1722
Bruce Allanf4187b52008-08-26 18:36:50 -07001723/**
1724 * e1000e_phy_init_script_igp3 - Inits the IGP3 PHY
1725 * @hw: pointer to the HW structure
1726 *
1727 * Initializes a Intel Gigabit PHY3 when an EEPROM is not present.
1728 **/
1729s32 e1000e_phy_init_script_igp3(struct e1000_hw *hw)
1730{
1731 hw_dbg(hw, "Running IGP 3 PHY init script\n");
1732
1733 /* PHY init IGP 3 */
1734 /* Enable rise/fall, 10-mode work in class-A */
1735 e1e_wphy(hw, 0x2F5B, 0x9018);
1736 /* Remove all caps from Replica path filter */
1737 e1e_wphy(hw, 0x2F52, 0x0000);
1738 /* Bias trimming for ADC, AFE and Driver (Default) */
1739 e1e_wphy(hw, 0x2FB1, 0x8B24);
1740 /* Increase Hybrid poly bias */
1741 e1e_wphy(hw, 0x2FB2, 0xF8F0);
1742 /* Add 4% to Tx amplitude in Gig mode */
1743 e1e_wphy(hw, 0x2010, 0x10B0);
1744 /* Disable trimming (TTT) */
1745 e1e_wphy(hw, 0x2011, 0x0000);
1746 /* Poly DC correction to 94.6% + 2% for all channels */
1747 e1e_wphy(hw, 0x20DD, 0x249A);
1748 /* ABS DC correction to 95.9% */
1749 e1e_wphy(hw, 0x20DE, 0x00D3);
1750 /* BG temp curve trim */
1751 e1e_wphy(hw, 0x28B4, 0x04CE);
1752 /* Increasing ADC OPAMP stage 1 currents to max */
1753 e1e_wphy(hw, 0x2F70, 0x29E4);
1754 /* Force 1000 ( required for enabling PHY regs configuration) */
1755 e1e_wphy(hw, 0x0000, 0x0140);
1756 /* Set upd_freq to 6 */
1757 e1e_wphy(hw, 0x1F30, 0x1606);
1758 /* Disable NPDFE */
1759 e1e_wphy(hw, 0x1F31, 0xB814);
1760 /* Disable adaptive fixed FFE (Default) */
1761 e1e_wphy(hw, 0x1F35, 0x002A);
1762 /* Enable FFE hysteresis */
1763 e1e_wphy(hw, 0x1F3E, 0x0067);
1764 /* Fixed FFE for short cable lengths */
1765 e1e_wphy(hw, 0x1F54, 0x0065);
1766 /* Fixed FFE for medium cable lengths */
1767 e1e_wphy(hw, 0x1F55, 0x002A);
1768 /* Fixed FFE for long cable lengths */
1769 e1e_wphy(hw, 0x1F56, 0x002A);
1770 /* Enable Adaptive Clip Threshold */
1771 e1e_wphy(hw, 0x1F72, 0x3FB0);
1772 /* AHT reset limit to 1 */
1773 e1e_wphy(hw, 0x1F76, 0xC0FF);
1774 /* Set AHT master delay to 127 msec */
1775 e1e_wphy(hw, 0x1F77, 0x1DEC);
1776 /* Set scan bits for AHT */
1777 e1e_wphy(hw, 0x1F78, 0xF9EF);
1778 /* Set AHT Preset bits */
1779 e1e_wphy(hw, 0x1F79, 0x0210);
1780 /* Change integ_factor of channel A to 3 */
1781 e1e_wphy(hw, 0x1895, 0x0003);
1782 /* Change prop_factor of channels BCD to 8 */
1783 e1e_wphy(hw, 0x1796, 0x0008);
1784 /* Change cg_icount + enable integbp for channels BCD */
1785 e1e_wphy(hw, 0x1798, 0xD008);
1786 /*
1787 * Change cg_icount + enable integbp + change prop_factor_master
1788 * to 8 for channel A
1789 */
1790 e1e_wphy(hw, 0x1898, 0xD918);
1791 /* Disable AHT in Slave mode on channel A */
1792 e1e_wphy(hw, 0x187A, 0x0800);
1793 /*
1794 * Enable LPLU and disable AN to 1000 in non-D0a states,
1795 * Enable SPD+B2B
1796 */
1797 e1e_wphy(hw, 0x0019, 0x008D);
1798 /* Enable restart AN on an1000_dis change */
1799 e1e_wphy(hw, 0x001B, 0x2080);
1800 /* Enable wh_fifo read clock in 10/100 modes */
1801 e1e_wphy(hw, 0x0014, 0x0045);
1802 /* Restart AN, Speed selection is 1000 */
1803 e1e_wphy(hw, 0x0000, 0x1340);
1804
1805 return 0;
1806}
1807
Auke Kokbc7f75f2007-09-17 12:30:59 -07001808/* Internal function pointers */
1809
1810/**
1811 * e1000_get_phy_cfg_done - Generic PHY configuration done
1812 * @hw: pointer to the HW structure
1813 *
1814 * Return success if silicon family did not implement a family specific
1815 * get_cfg_done function.
1816 **/
1817static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw)
1818{
1819 if (hw->phy.ops.get_cfg_done)
1820 return hw->phy.ops.get_cfg_done(hw);
1821
1822 return 0;
1823}
1824
1825/**
1826 * e1000_phy_force_speed_duplex - Generic force PHY speed/duplex
1827 * @hw: pointer to the HW structure
1828 *
1829 * When the silicon family has not implemented a forced speed/duplex
1830 * function for the PHY, simply return 0.
1831 **/
1832static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
1833{
1834 if (hw->phy.ops.force_speed_duplex)
1835 return hw->phy.ops.force_speed_duplex(hw);
1836
1837 return 0;
1838}
1839
1840/**
1841 * e1000e_get_phy_type_from_id - Get PHY type from id
1842 * @phy_id: phy_id read from the phy
1843 *
1844 * Returns the phy type from the id.
1845 **/
1846enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id)
1847{
1848 enum e1000_phy_type phy_type = e1000_phy_unknown;
1849
1850 switch (phy_id) {
1851 case M88E1000_I_PHY_ID:
1852 case M88E1000_E_PHY_ID:
1853 case M88E1111_I_PHY_ID:
1854 case M88E1011_I_PHY_ID:
1855 phy_type = e1000_phy_m88;
1856 break;
1857 case IGP01E1000_I_PHY_ID: /* IGP 1 & 2 share this */
1858 phy_type = e1000_phy_igp_2;
1859 break;
1860 case GG82563_E_PHY_ID:
1861 phy_type = e1000_phy_gg82563;
1862 break;
1863 case IGP03E1000_E_PHY_ID:
1864 phy_type = e1000_phy_igp_3;
1865 break;
1866 case IFE_E_PHY_ID:
1867 case IFE_PLUS_E_PHY_ID:
1868 case IFE_C_E_PHY_ID:
1869 phy_type = e1000_phy_ife;
1870 break;
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001871 case BME1000_E_PHY_ID:
1872 case BME1000_E_PHY_ID_R2:
1873 phy_type = e1000_phy_bm;
1874 break;
Auke Kokbc7f75f2007-09-17 12:30:59 -07001875 default:
1876 phy_type = e1000_phy_unknown;
1877 break;
1878 }
1879 return phy_type;
1880}
1881
1882/**
Bruce Allan97ac8ca2008-04-29 09:16:05 -07001883 * e1000e_determine_phy_address - Determines PHY address.
1884 * @hw: pointer to the HW structure
1885 *
1886 * This uses a trial and error method to loop through possible PHY
1887 * addresses. It tests each by reading the PHY ID registers and
1888 * checking for a match.
1889 **/
1890s32 e1000e_determine_phy_address(struct e1000_hw *hw)
1891{
1892 s32 ret_val = -E1000_ERR_PHY_TYPE;
1893 u32 phy_addr= 0;
1894 u32 i = 0;
1895 enum e1000_phy_type phy_type = e1000_phy_unknown;
1896
1897 do {
1898 for (phy_addr = 0; phy_addr < 4; phy_addr++) {
1899 hw->phy.addr = phy_addr;
1900 e1000e_get_phy_id(hw);
1901 phy_type = e1000e_get_phy_type_from_id(hw->phy.id);
1902
1903 /*
1904 * If phy_type is valid, break - we found our
1905 * PHY address
1906 */
1907 if (phy_type != e1000_phy_unknown) {
1908 ret_val = 0;
1909 break;
1910 }
1911 }
1912 i++;
1913 } while ((ret_val != 0) && (i < 100));
1914
1915 return ret_val;
1916}
1917
1918/**
1919 * e1000_get_phy_addr_for_bm_page - Retrieve PHY page address
1920 * @page: page to access
1921 *
1922 * Returns the phy address for the page requested.
1923 **/
1924static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg)
1925{
1926 u32 phy_addr = 2;
1927
1928 if ((page >= 768) || (page == 0 && reg == 25) || (reg == 31))
1929 phy_addr = 1;
1930
1931 return phy_addr;
1932}
1933
1934/**
1935 * e1000e_write_phy_reg_bm - Write BM PHY register
1936 * @hw: pointer to the HW structure
1937 * @offset: register offset to write to
1938 * @data: data to write at register offset
1939 *
1940 * Acquires semaphore, if necessary, then writes the data to PHY register
1941 * at the offset. Release any acquired semaphores before exiting.
1942 **/
1943s32 e1000e_write_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 data)
1944{
1945 s32 ret_val;
1946 u32 page_select = 0;
1947 u32 page = offset >> IGP_PAGE_SHIFT;
1948 u32 page_shift = 0;
1949
1950 /* Page 800 works differently than the rest so it has its own func */
1951 if (page == BM_WUC_PAGE) {
1952 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data,
1953 false);
1954 goto out;
1955 }
1956
1957 ret_val = hw->phy.ops.acquire_phy(hw);
1958 if (ret_val)
1959 goto out;
1960
1961 hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset);
1962
1963 if (offset > MAX_PHY_MULTI_PAGE_REG) {
1964 /*
1965 * Page select is register 31 for phy address 1 and 22 for
1966 * phy address 2 and 3. Page select is shifted only for
1967 * phy address 1.
1968 */
1969 if (hw->phy.addr == 1) {
1970 page_shift = IGP_PAGE_SHIFT;
1971 page_select = IGP01E1000_PHY_PAGE_SELECT;
1972 } else {
1973 page_shift = 0;
1974 page_select = BM_PHY_PAGE_SELECT;
1975 }
1976
1977 /* Page is shifted left, PHY expects (page x 32) */
1978 ret_val = e1000e_write_phy_reg_mdic(hw, page_select,
1979 (page << page_shift));
1980 if (ret_val) {
1981 hw->phy.ops.release_phy(hw);
1982 goto out;
1983 }
1984 }
1985
1986 ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
1987 data);
1988
1989 hw->phy.ops.release_phy(hw);
1990
1991out:
1992 return ret_val;
1993}
1994
1995/**
1996 * e1000e_read_phy_reg_bm - Read BM PHY register
1997 * @hw: pointer to the HW structure
1998 * @offset: register offset to be read
1999 * @data: pointer to the read data
2000 *
2001 * Acquires semaphore, if necessary, then reads the PHY register at offset
2002 * and storing the retrieved information in data. Release any acquired
2003 * semaphores before exiting.
2004 **/
2005s32 e1000e_read_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 *data)
2006{
2007 s32 ret_val;
2008 u32 page_select = 0;
2009 u32 page = offset >> IGP_PAGE_SHIFT;
2010 u32 page_shift = 0;
2011
2012 /* Page 800 works differently than the rest so it has its own func */
2013 if (page == BM_WUC_PAGE) {
2014 ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data,
2015 true);
2016 goto out;
2017 }
2018
2019 ret_val = hw->phy.ops.acquire_phy(hw);
2020 if (ret_val)
2021 goto out;
2022
2023 hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset);
2024
2025 if (offset > MAX_PHY_MULTI_PAGE_REG) {
2026 /*
2027 * Page select is register 31 for phy address 1 and 22 for
2028 * phy address 2 and 3. Page select is shifted only for
2029 * phy address 1.
2030 */
2031 if (hw->phy.addr == 1) {
2032 page_shift = IGP_PAGE_SHIFT;
2033 page_select = IGP01E1000_PHY_PAGE_SELECT;
2034 } else {
2035 page_shift = 0;
2036 page_select = BM_PHY_PAGE_SELECT;
2037 }
2038
2039 /* Page is shifted left, PHY expects (page x 32) */
2040 ret_val = e1000e_write_phy_reg_mdic(hw, page_select,
2041 (page << page_shift));
2042 if (ret_val) {
2043 hw->phy.ops.release_phy(hw);
2044 goto out;
2045 }
2046 }
2047
2048 ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
2049 data);
2050 hw->phy.ops.release_phy(hw);
2051
2052out:
2053 return ret_val;
2054}
2055
2056/**
2057 * e1000_access_phy_wakeup_reg_bm - Read BM PHY wakeup register
2058 * @hw: pointer to the HW structure
2059 * @offset: register offset to be read or written
2060 * @data: pointer to the data to read or write
2061 * @read: determines if operation is read or write
2062 *
2063 * Acquires semaphore, if necessary, then reads the PHY register at offset
2064 * and storing the retrieved information in data. Release any acquired
2065 * semaphores before exiting. Note that procedure to read the wakeup
2066 * registers are different. It works as such:
2067 * 1) Set page 769, register 17, bit 2 = 1
2068 * 2) Set page to 800 for host (801 if we were manageability)
2069 * 3) Write the address using the address opcode (0x11)
2070 * 4) Read or write the data using the data opcode (0x12)
2071 * 5) Restore 769_17.2 to its original value
2072 **/
2073static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
2074 u16 *data, bool read)
2075{
2076 s32 ret_val;
2077 u16 reg = ((u16)offset) & PHY_REG_MASK;
2078 u16 phy_reg = 0;
2079 u8 phy_acquired = 1;
2080
2081
2082 ret_val = hw->phy.ops.acquire_phy(hw);
2083 if (ret_val) {
2084 phy_acquired = 0;
2085 goto out;
2086 }
2087
2088 /* All operations in this function are phy address 1 */
2089 hw->phy.addr = 1;
2090
2091 /* Set page 769 */
2092 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
2093 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
2094
2095 ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg);
2096 if (ret_val)
2097 goto out;
2098
2099 /* First clear bit 4 to avoid a power state change */
2100 phy_reg &= ~(BM_WUC_HOST_WU_BIT);
2101 ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
2102 if (ret_val)
2103 goto out;
2104
2105 /* Write bit 2 = 1, and clear bit 4 to 769_17 */
2106 ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG,
2107 phy_reg | BM_WUC_ENABLE_BIT);
2108 if (ret_val)
2109 goto out;
2110
2111 /* Select page 800 */
2112 ret_val = e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
2113 (BM_WUC_PAGE << IGP_PAGE_SHIFT));
2114
2115 /* Write the page 800 offset value using opcode 0x11 */
2116 ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ADDRESS_OPCODE, reg);
2117 if (ret_val)
2118 goto out;
2119
2120 if (read) {
2121 /* Read the page 800 value using opcode 0x12 */
2122 ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE,
2123 data);
2124 } else {
2125 /* Read the page 800 value using opcode 0x12 */
2126 ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE,
2127 *data);
2128 }
2129
2130 if (ret_val)
2131 goto out;
2132
2133 /*
2134 * Restore 769_17.2 to its original value
2135 * Set page 769
2136 */
2137 e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
2138 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
2139
2140 /* Clear 769_17.2 */
2141 ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
2142
2143out:
2144 if (phy_acquired == 1)
2145 hw->phy.ops.release_phy(hw);
2146 return ret_val;
2147}
2148
2149/**
Auke Kokbc7f75f2007-09-17 12:30:59 -07002150 * e1000e_commit_phy - Soft PHY reset
2151 * @hw: pointer to the HW structure
2152 *
2153 * Performs a soft PHY reset on those that apply. This is a function pointer
2154 * entry point called by drivers.
2155 **/
2156s32 e1000e_commit_phy(struct e1000_hw *hw)
2157{
2158 if (hw->phy.ops.commit_phy)
2159 return hw->phy.ops.commit_phy(hw);
2160
2161 return 0;
2162}
2163
2164/**
2165 * e1000_set_d0_lplu_state - Sets low power link up state for D0
2166 * @hw: pointer to the HW structure
2167 * @active: boolean used to enable/disable lplu
2168 *
2169 * Success returns 0, Failure returns 1
2170 *
2171 * The low power link up (lplu) state is set to the power management level D0
2172 * and SmartSpeed is disabled when active is true, else clear lplu for D0
2173 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
2174 * is used during Dx states where the power conservation is most important.
2175 * During driver activity, SmartSpeed should be enabled so performance is
2176 * maintained. This is a function pointer entry point called by drivers.
2177 **/
2178static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
2179{
2180 if (hw->phy.ops.set_d0_lplu_state)
2181 return hw->phy.ops.set_d0_lplu_state(hw, active);
2182
2183 return 0;
2184}