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5689 Want support for newer Intel I218 parts
[unleashed.git] / usr / src / uts / common / io / e1000api / e1000_ich8lan.c
blob14c5689edb2a722a5abc9ae56d180fbf4454fae2
1 /******************************************************************************
2
3 Copyright (c) 2001-2014, 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 /*$FreeBSD$*/
34
35 /* 82562G 10/100 Network Connection
36 * 82562G-2 10/100 Network Connection
37 * 82562GT 10/100 Network Connection
38 * 82562GT-2 10/100 Network Connection
39 * 82562V 10/100 Network Connection
40 * 82562V-2 10/100 Network Connection
41 * 82566DC-2 Gigabit Network Connection
42 * 82566DC Gigabit Network Connection
43 * 82566DM-2 Gigabit Network Connection
44 * 82566DM Gigabit Network Connection
45 * 82566MC Gigabit Network Connection
46 * 82566MM Gigabit Network Connection
47 * 82567LM Gigabit Network Connection
48 * 82567LF Gigabit Network Connection
49 * 82567V Gigabit Network Connection
50 * 82567LM-2 Gigabit Network Connection
51 * 82567LF-2 Gigabit Network Connection
52 * 82567V-2 Gigabit Network Connection
53 * 82567LF-3 Gigabit Network Connection
54 * 82567LM-3 Gigabit Network Connection
55 * 82567LM-4 Gigabit Network Connection
56 * 82577LM Gigabit Network Connection
57 * 82577LC Gigabit Network Connection
58 * 82578DM Gigabit Network Connection
59 * 82578DC Gigabit Network Connection
60 * 82579LM Gigabit Network Connection
61 * 82579V Gigabit Network Connection
62 * Ethernet Connection I217-LM
63 * Ethernet Connection I217-V
64 * Ethernet Connection I218-V
65 * Ethernet Connection I218-LM
66 * Ethernet Connection (2) I218-LM
67 * Ethernet Connection (2) I218-V
68 * Ethernet Connection (3) I218-LM
69 * Ethernet Connection (3) I218-V
70 */
71
72 #include "e1000_api.h"
73
74 static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw);
75 static void e1000_release_swflag_ich8lan(struct e1000_hw *hw);
76 static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw);
77 static void e1000_release_nvm_ich8lan(struct e1000_hw *hw);
78 static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw);
79 static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw);
80 static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index);
81 static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index);
82 static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw);
83 static void e1000_update_mc_addr_list_pch2lan(struct e1000_hw *hw,
84 u8 *mc_addr_list,
85 u32 mc_addr_count);
86 static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw);
87 static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw);
88 static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active);
89 static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw,
90 bool active);
91 static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw,
92 bool active);
93 static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset,
94 u16 words, u16 *data);
95 static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset,
96 u16 words, u16 *data);
97 static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw);
98 static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw);
99 static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw,
100 u16 *data);
101 static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw);
102 static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw);
103 static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw);
104 static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw);
105 static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw);
106 static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw);
107 static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw);
108 static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw,
109 u16 *speed, u16 *duplex);
110 static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw);
111 static s32 e1000_led_on_ich8lan(struct e1000_hw *hw);
112 static s32 e1000_led_off_ich8lan(struct e1000_hw *hw);
113 static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link);
114 static s32 e1000_setup_led_pchlan(struct e1000_hw *hw);
115 static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw);
116 static s32 e1000_led_on_pchlan(struct e1000_hw *hw);
117 static s32 e1000_led_off_pchlan(struct e1000_hw *hw);
118 static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw);
119 static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank);
120 static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw);
121 static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw);
122 static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw,
123 u32 offset, u8 *data);
124 static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
125 u8 size, u16 *data);
126 static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw,
127 u32 offset, u16 *data);
128 static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
129 u32 offset, u8 byte);
130 static s32 e1000_get_cfg_done_ich8lan(struct e1000_hw *hw);
131 static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw);
132 static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw);
133 static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw);
134 static s32 e1000_k1_workaround_lv(struct e1000_hw *hw);
135 static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate);
136 static s32 e1000_set_obff_timer_pch_lpt(struct e1000_hw *hw, u32 itr);
137
138 /* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
139 /* Offset 04h HSFSTS */
140 union ich8_hws_flash_status {
141 struct ich8_hsfsts {
142 u16 flcdone:1; /* bit 0 Flash Cycle Done */
143 u16 flcerr:1; /* bit 1 Flash Cycle Error */
144 u16 dael:1; /* bit 2 Direct Access error Log */
145 u16 berasesz:2; /* bit 4:3 Sector Erase Size */
146 u16 flcinprog:1; /* bit 5 flash cycle in Progress */
147 u16 reserved1:2; /* bit 13:6 Reserved */
148 u16 reserved2:6; /* bit 13:6 Reserved */
149 u16 fldesvalid:1; /* bit 14 Flash Descriptor Valid */
150 u16 flockdn:1; /* bit 15 Flash Config Lock-Down */
151 } hsf_status;
152 u16 regval;
153 };
154
155 /* ICH GbE Flash Hardware Sequencing Flash control Register bit breakdown */
156 /* Offset 06h FLCTL */
157 union ich8_hws_flash_ctrl {
158 struct ich8_hsflctl {
159 u16 flcgo:1; /* 0 Flash Cycle Go */
160 u16 flcycle:2; /* 2:1 Flash Cycle */
161 u16 reserved:5; /* 7:3 Reserved */
162 u16 fldbcount:2; /* 9:8 Flash Data Byte Count */
163 u16 flockdn:6; /* 15:10 Reserved */
164 } hsf_ctrl;
165 u16 regval;
166 };
167
168 /* ICH Flash Region Access Permissions */
169 union ich8_hws_flash_regacc {
170 struct ich8_flracc {
171 u32 grra:8; /* 0:7 GbE region Read Access */
172 u32 grwa:8; /* 8:15 GbE region Write Access */
173 u32 gmrag:8; /* 23:16 GbE Master Read Access Grant */
174 u32 gmwag:8; /* 31:24 GbE Master Write Access Grant */
175 } hsf_flregacc;
176 u16 regval;
177 };
178
179 /**
180 * e1000_phy_is_accessible_pchlan - Check if able to access PHY registers
181 * @hw: pointer to the HW structure
182 *
183 * Test access to the PHY registers by reading the PHY ID registers. If
184 * the PHY ID is already known (e.g. resume path) compare it with known ID,
185 * otherwise assume the read PHY ID is correct if it is valid.
186 *
187 * Assumes the sw/fw/hw semaphore is already acquired.
188 **/
189 static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw)
190 {
191 u16 phy_reg = 0;
192 u32 phy_id = 0;
193 s32 ret_val = 0;
194 u16 retry_count;
195 u32 mac_reg = 0;
196
197 for (retry_count = 0; retry_count < 2; retry_count++) {
198 ret_val = hw->phy.ops.read_reg_locked(hw, PHY_ID1, &phy_reg);
199 if (ret_val || (phy_reg == 0xFFFF))
200 continue;
201 phy_id = (u32)(phy_reg << 16);
202
203 ret_val = hw->phy.ops.read_reg_locked(hw, PHY_ID2, &phy_reg);
204 if (ret_val || (phy_reg == 0xFFFF)) {
205 phy_id = 0;
206 continue;
207 }
208 phy_id |= (u32)(phy_reg & PHY_REVISION_MASK);
209 break;
210 }
211
212 if (hw->phy.id) {
213 if (hw->phy.id == phy_id)
214 goto out;
215 } else if (phy_id) {
216 hw->phy.id = phy_id;
217 hw->phy.revision = (u32)(phy_reg & ~PHY_REVISION_MASK);
218 goto out;
219 }
220
221 /* In case the PHY needs to be in mdio slow mode,
222 * set slow mode and try to get the PHY id again.
223 */
224 if (hw->mac.type < e1000_pch_lpt) {
225 hw->phy.ops.release(hw);
226 ret_val = e1000_set_mdio_slow_mode_hv(hw);
227 if (!ret_val)
228 ret_val = e1000_get_phy_id(hw);
229 hw->phy.ops.acquire(hw);
230 }
231
232 if (ret_val)
233 return FALSE;
234 out:
235 if (hw->mac.type == e1000_pch_lpt) {
236 /* Unforce SMBus mode in PHY */
237 hw->phy.ops.read_reg_locked(hw, CV_SMB_CTRL, &phy_reg);
238 phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
239 hw->phy.ops.write_reg_locked(hw, CV_SMB_CTRL, phy_reg);
240
241 /* Unforce SMBus mode in MAC */
242 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
243 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
244 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
245 }
246
247 return TRUE;
248 }
249
250 /**
251 * e1000_toggle_lanphypc_pch_lpt - toggle the LANPHYPC pin value
252 * @hw: pointer to the HW structure
253 *
254 * Toggling the LANPHYPC pin value fully power-cycles the PHY and is
255 * used to reset the PHY to a quiescent state when necessary.
256 **/
257 static void e1000_toggle_lanphypc_pch_lpt(struct e1000_hw *hw)
258 {
259 u32 mac_reg;
260
261 DEBUGFUNC("e1000_toggle_lanphypc_pch_lpt");
262
263 /* Set Phy Config Counter to 50msec */
264 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM3);
265 mac_reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
266 mac_reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
267 E1000_WRITE_REG(hw, E1000_FEXTNVM3, mac_reg);
268
269 /* Toggle LANPHYPC Value bit */
270 mac_reg = E1000_READ_REG(hw, E1000_CTRL);
271 mac_reg |= E1000_CTRL_LANPHYPC_OVERRIDE;
272 mac_reg &= ~E1000_CTRL_LANPHYPC_VALUE;
273 E1000_WRITE_REG(hw, E1000_CTRL, mac_reg);
274 E1000_WRITE_FLUSH(hw);
275 usec_delay(10);
276 mac_reg &= ~E1000_CTRL_LANPHYPC_OVERRIDE;
277 E1000_WRITE_REG(hw, E1000_CTRL, mac_reg);
278 E1000_WRITE_FLUSH(hw);
279
280 if (hw->mac.type < e1000_pch_lpt) {
281 msec_delay(50);
282 } else {
283 u16 count = 20;
284
285 do {
286 msec_delay(5);
287 } while (!(E1000_READ_REG(hw, E1000_CTRL_EXT) &
288 E1000_CTRL_EXT_LPCD) && count--);
289
290 msec_delay(30);
291 }
292 }
293
294 /**
295 * e1000_init_phy_workarounds_pchlan - PHY initialization workarounds
296 * @hw: pointer to the HW structure
297 *
298 * Workarounds/flow necessary for PHY initialization during driver load
299 * and resume paths.
300 **/
301 static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
302 {
303 u32 mac_reg, fwsm = E1000_READ_REG(hw, E1000_FWSM);
304 s32 ret_val;
305
306 DEBUGFUNC("e1000_init_phy_workarounds_pchlan");
307
308 /* Gate automatic PHY configuration by hardware on managed and
309 * non-managed 82579 and newer adapters.
310 */
311 e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
312
313 /* It is not possible to be certain of the current state of ULP
314 * so forcibly disable it.
315 */
316 hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_unknown;
317 e1000_disable_ulp_lpt_lp(hw, TRUE);
318
319 ret_val = hw->phy.ops.acquire(hw);
320 if (ret_val) {
321 DEBUGOUT("Failed to initialize PHY flow\n");
322 goto out;
323 }
324
325 /* The MAC-PHY interconnect may be in SMBus mode. If the PHY is
326 * inaccessible and resetting the PHY is not blocked, toggle the
327 * LANPHYPC Value bit to force the interconnect to PCIe mode.
328 */
329 switch (hw->mac.type) {
330 case e1000_pch_lpt:
331 if (e1000_phy_is_accessible_pchlan(hw))
332 break;
333
334 /* Before toggling LANPHYPC, see if PHY is accessible by
335 * forcing MAC to SMBus mode first.
336 */
337 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
338 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
339 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
340
341 /* Wait 50 milliseconds for MAC to finish any retries
342 * that it might be trying to perform from previous
343 * attempts to acknowledge any phy read requests.
344 */
345 msec_delay(50);
346
347 /* fall-through */
348 case e1000_pch2lan:
349 if (e1000_phy_is_accessible_pchlan(hw))
350 break;
351
352 /* fall-through */
353 case e1000_pchlan:
354 if ((hw->mac.type == e1000_pchlan) &&
355 (fwsm & E1000_ICH_FWSM_FW_VALID))
356 break;
357
358 if (hw->phy.ops.check_reset_block(hw)) {
359 DEBUGOUT("Required LANPHYPC toggle blocked by ME\n");
360 ret_val = -E1000_ERR_PHY;
361 break;
362 }
363
364 /* Toggle LANPHYPC Value bit */
365 e1000_toggle_lanphypc_pch_lpt(hw);
366 if (hw->mac.type >= e1000_pch_lpt) {
367 if (e1000_phy_is_accessible_pchlan(hw))
368 break;
369
370 /* Toggling LANPHYPC brings the PHY out of SMBus mode
371 * so ensure that the MAC is also out of SMBus mode
372 */
373 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
374 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
375 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
376
377 if (e1000_phy_is_accessible_pchlan(hw))
378 break;
379
380 ret_val = -E1000_ERR_PHY;
381 }
382 break;
383 default:
384 break;
385 }
386
387 hw->phy.ops.release(hw);
388 if (!ret_val) {
389
390 /* Check to see if able to reset PHY. Print error if not */
391 if (hw->phy.ops.check_reset_block(hw)) {
392 ERROR_REPORT("Reset blocked by ME\n");
393 goto out;
394 }
395
396 /* Reset the PHY before any access to it. Doing so, ensures
397 * that the PHY is in a known good state before we read/write
398 * PHY registers. The generic reset is sufficient here,
399 * because we haven't determined the PHY type yet.
400 */
401 ret_val = e1000_phy_hw_reset_generic(hw);
402 if (ret_val)
403 goto out;
404
405 /* On a successful reset, possibly need to wait for the PHY
406 * to quiesce to an accessible state before returning control
407 * to the calling function. If the PHY does not quiesce, then
408 * return E1000E_BLK_PHY_RESET, as this is the condition that
409 * the PHY is in.
410 */
411 ret_val = hw->phy.ops.check_reset_block(hw);
412 if (ret_val)
413 ERROR_REPORT("ME blocked access to PHY after reset\n");
414 }
415
416 out:
417 /* Ungate automatic PHY configuration on non-managed 82579 */
418 if ((hw->mac.type == e1000_pch2lan) &&
419 !(fwsm & E1000_ICH_FWSM_FW_VALID)) {
420 msec_delay(10);
421 e1000_gate_hw_phy_config_ich8lan(hw, FALSE);
422 }
423
424 return ret_val;
425 }
426
427 /**
428 * e1000_init_phy_params_pchlan - Initialize PHY function pointers
429 * @hw: pointer to the HW structure
430 *
431 * Initialize family-specific PHY parameters and function pointers.
432 **/
433 static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
434 {
435 struct e1000_phy_info *phy = &hw->phy;
436 s32 ret_val;
437
438 DEBUGFUNC("e1000_init_phy_params_pchlan");
439
440 phy->addr = 1;
441 phy->reset_delay_us = 100;
442
443 phy->ops.acquire = e1000_acquire_swflag_ich8lan;
444 phy->ops.check_reset_block = e1000_check_reset_block_ich8lan;
445 phy->ops.get_cfg_done = e1000_get_cfg_done_ich8lan;
446 phy->ops.set_page = e1000_set_page_igp;
447 phy->ops.read_reg = e1000_read_phy_reg_hv;
448 phy->ops.read_reg_locked = e1000_read_phy_reg_hv_locked;
449 phy->ops.read_reg_page = e1000_read_phy_reg_page_hv;
450 phy->ops.release = e1000_release_swflag_ich8lan;
451 phy->ops.reset = e1000_phy_hw_reset_ich8lan;
452 phy->ops.set_d0_lplu_state = e1000_set_lplu_state_pchlan;
453 phy->ops.set_d3_lplu_state = e1000_set_lplu_state_pchlan;
454 phy->ops.write_reg = e1000_write_phy_reg_hv;
455 phy->ops.write_reg_locked = e1000_write_phy_reg_hv_locked;
456 phy->ops.write_reg_page = e1000_write_phy_reg_page_hv;
457 phy->ops.power_up = e1000_power_up_phy_copper;
458 phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
459 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
460
461 phy->id = e1000_phy_unknown;
462
463 ret_val = e1000_init_phy_workarounds_pchlan(hw);
464 if (ret_val)
465 return ret_val;
466
467 if (phy->id == e1000_phy_unknown)
468 switch (hw->mac.type) {
469 default:
470 ret_val = e1000_get_phy_id(hw);
471 if (ret_val)
472 return ret_val;
473 if ((phy->id != 0) && (phy->id != PHY_REVISION_MASK))
474 break;
475 /* fall-through */
476 case e1000_pch2lan:
477 case e1000_pch_lpt:
478 /* In case the PHY needs to be in mdio slow mode,
479 * set slow mode and try to get the PHY id again.
480 */
481 ret_val = e1000_set_mdio_slow_mode_hv(hw);
482 if (ret_val)
483 return ret_val;
484 ret_val = e1000_get_phy_id(hw);
485 if (ret_val)
486 return ret_val;
487 break;
488 }
489 phy->type = e1000_get_phy_type_from_id(phy->id);
490
491 switch (phy->type) {
492 case e1000_phy_82577:
493 case e1000_phy_82579:
494 case e1000_phy_i217:
495 phy->ops.check_polarity = e1000_check_polarity_82577;
496 phy->ops.force_speed_duplex =
497 e1000_phy_force_speed_duplex_82577;
498 phy->ops.get_cable_length = e1000_get_cable_length_82577;
499 phy->ops.get_info = e1000_get_phy_info_82577;
500 phy->ops.commit = e1000_phy_sw_reset_generic;
501 break;
502 case e1000_phy_82578:
503 phy->ops.check_polarity = e1000_check_polarity_m88;
504 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
505 phy->ops.get_cable_length = e1000_get_cable_length_m88;
506 phy->ops.get_info = e1000_get_phy_info_m88;
507 break;
508 default:
509 ret_val = -E1000_ERR_PHY;
510 break;
511 }
512
513 return ret_val;
514 }
515
516 /**
517 * e1000_init_phy_params_ich8lan - Initialize PHY function pointers
518 * @hw: pointer to the HW structure
519 *
520 * Initialize family-specific PHY parameters and function pointers.
521 **/
522 static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
523 {
524 struct e1000_phy_info *phy = &hw->phy;
525 s32 ret_val;
526 u16 i = 0;
527
528 DEBUGFUNC("e1000_init_phy_params_ich8lan");
529
530 phy->addr = 1;
531 phy->reset_delay_us = 100;
532
533 phy->ops.acquire = e1000_acquire_swflag_ich8lan;
534 phy->ops.check_reset_block = e1000_check_reset_block_ich8lan;
535 phy->ops.get_cable_length = e1000_get_cable_length_igp_2;
536 phy->ops.get_cfg_done = e1000_get_cfg_done_ich8lan;
537 phy->ops.read_reg = e1000_read_phy_reg_igp;
538 phy->ops.release = e1000_release_swflag_ich8lan;
539 phy->ops.reset = e1000_phy_hw_reset_ich8lan;
540 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_ich8lan;
541 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_ich8lan;
542 phy->ops.write_reg = e1000_write_phy_reg_igp;
543 phy->ops.power_up = e1000_power_up_phy_copper;
544 phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
545
546 /* We may need to do this twice - once for IGP and if that fails,
547 * we'll set BM func pointers and try again
548 */
549 ret_val = e1000_determine_phy_address(hw);
550 if (ret_val) {
551 phy->ops.write_reg = e1000_write_phy_reg_bm;
552 phy->ops.read_reg = e1000_read_phy_reg_bm;
553 ret_val = e1000_determine_phy_address(hw);
554 if (ret_val) {
555 DEBUGOUT("Cannot determine PHY addr. Erroring out\n");
556 return ret_val;
557 }
558 }
559
560 phy->id = 0;
561 while ((e1000_phy_unknown == e1000_get_phy_type_from_id(phy->id)) &&
562 (i++ < 100)) {
563 msec_delay(1);
564 ret_val = e1000_get_phy_id(hw);
565 if (ret_val)
566 return ret_val;
567 }
568
569 /* Verify phy id */
570 switch (phy->id) {
571 case IGP03E1000_E_PHY_ID:
572 phy->type = e1000_phy_igp_3;
573 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
574 phy->ops.read_reg_locked = e1000_read_phy_reg_igp_locked;
575 phy->ops.write_reg_locked = e1000_write_phy_reg_igp_locked;
576 phy->ops.get_info = e1000_get_phy_info_igp;
577 phy->ops.check_polarity = e1000_check_polarity_igp;
578 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
579 break;
580 case IFE_E_PHY_ID:
581 case IFE_PLUS_E_PHY_ID:
582 case IFE_C_E_PHY_ID:
583 phy->type = e1000_phy_ife;
584 phy->autoneg_mask = E1000_ALL_NOT_GIG;
585 phy->ops.get_info = e1000_get_phy_info_ife;
586 phy->ops.check_polarity = e1000_check_polarity_ife;
587 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_ife;
588 break;
589 case BME1000_E_PHY_ID:
590 phy->type = e1000_phy_bm;
591 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
592 phy->ops.read_reg = e1000_read_phy_reg_bm;
593 phy->ops.write_reg = e1000_write_phy_reg_bm;
594 phy->ops.commit = e1000_phy_sw_reset_generic;
595 phy->ops.get_info = e1000_get_phy_info_m88;
596 phy->ops.check_polarity = e1000_check_polarity_m88;
597 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
598 break;
599 default:
600 return -E1000_ERR_PHY;
601 break;
602 }
603
604 return E1000_SUCCESS;
605 }
606
607 /**
608 * e1000_init_nvm_params_ich8lan - Initialize NVM function pointers
609 * @hw: pointer to the HW structure
610 *
611 * Initialize family-specific NVM parameters and function
612 * pointers.
613 **/
614 static s32 e1000_init_nvm_params_ich8lan(struct e1000_hw *hw)
615 {
616 struct e1000_nvm_info *nvm = &hw->nvm;
617 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
618 u32 gfpreg, sector_base_addr, sector_end_addr;
619 u16 i;
620
621 DEBUGFUNC("e1000_init_nvm_params_ich8lan");
622
623 /* Can't read flash registers if the register set isn't mapped. */
624 nvm->type = e1000_nvm_flash_sw;
625 if (!hw->flash_address) {
626 DEBUGOUT("ERROR: Flash registers not mapped\n");
627 return -E1000_ERR_CONFIG;
628 }
629
630 gfpreg = E1000_READ_FLASH_REG(hw, ICH_FLASH_GFPREG);
631
632 /* sector_X_addr is a "sector"-aligned address (4096 bytes)
633 * Add 1 to sector_end_addr since this sector is included in
634 * the overall size.
635 */
636 sector_base_addr = gfpreg & FLASH_GFPREG_BASE_MASK;
637 sector_end_addr = ((gfpreg >> 16) & FLASH_GFPREG_BASE_MASK) + 1;
638
639 /* flash_base_addr is byte-aligned */
640 nvm->flash_base_addr = sector_base_addr << FLASH_SECTOR_ADDR_SHIFT;
641
642 /* find total size of the NVM, then cut in half since the total
643 * size represents two separate NVM banks.
644 */
645 nvm->flash_bank_size = ((sector_end_addr - sector_base_addr)
646 << FLASH_SECTOR_ADDR_SHIFT);
647 nvm->flash_bank_size /= 2;
648 /* Adjust to word count */
649 nvm->flash_bank_size /= sizeof(u16);
650
651 nvm->word_size = E1000_SHADOW_RAM_WORDS;
652
653 /* Clear shadow ram */
654 for (i = 0; i < nvm->word_size; i++) {
655 dev_spec->shadow_ram[i].modified = FALSE;
656 dev_spec->shadow_ram[i].value = 0xFFFF;
657 }
658
659 E1000_MUTEX_INIT(&dev_spec->nvm_mutex);
660 E1000_MUTEX_INIT(&dev_spec->swflag_mutex);
661
662 /* Function Pointers */
663 nvm->ops.acquire = e1000_acquire_nvm_ich8lan;
664 nvm->ops.release = e1000_release_nvm_ich8lan;
665 nvm->ops.read = e1000_read_nvm_ich8lan;
666 nvm->ops.update = e1000_update_nvm_checksum_ich8lan;
667 nvm->ops.valid_led_default = e1000_valid_led_default_ich8lan;
668 nvm->ops.validate = e1000_validate_nvm_checksum_ich8lan;
669 nvm->ops.write = e1000_write_nvm_ich8lan;
670
671 return E1000_SUCCESS;
672 }
673
674 /**
675 * e1000_init_mac_params_ich8lan - Initialize MAC function pointers
676 * @hw: pointer to the HW structure
677 *
678 * Initialize family-specific MAC parameters and function
679 * pointers.
680 **/
681 static s32 e1000_init_mac_params_ich8lan(struct e1000_hw *hw)
682 {
683 struct e1000_mac_info *mac = &hw->mac;
684
685 DEBUGFUNC("e1000_init_mac_params_ich8lan");
686
687 /* Set media type function pointer */
688 hw->phy.media_type = e1000_media_type_copper;
689
690 /* Set mta register count */
691 mac->mta_reg_count = 32;
692 /* Set rar entry count */
693 mac->rar_entry_count = E1000_ICH_RAR_ENTRIES;
694 if (mac->type == e1000_ich8lan)
695 mac->rar_entry_count--;
696 /* Set if part includes ASF firmware */
697 mac->asf_firmware_present = TRUE;
698 /* FWSM register */
699 mac->has_fwsm = TRUE;
700 /* ARC subsystem not supported */
701 mac->arc_subsystem_valid = FALSE;
702 /* Adaptive IFS supported */
703 mac->adaptive_ifs = TRUE;
704
705 /* Function pointers */
706
707 /* bus type/speed/width */
708 mac->ops.get_bus_info = e1000_get_bus_info_ich8lan;
709 /* function id */
710 mac->ops.set_lan_id = e1000_set_lan_id_single_port;
711 /* reset */
712 mac->ops.reset_hw = e1000_reset_hw_ich8lan;
713 /* hw initialization */
714 mac->ops.init_hw = e1000_init_hw_ich8lan;
715 /* link setup */
716 mac->ops.setup_link = e1000_setup_link_ich8lan;
717 /* physical interface setup */
718 mac->ops.setup_physical_interface = e1000_setup_copper_link_ich8lan;
719 /* check for link */
720 mac->ops.check_for_link = e1000_check_for_copper_link_ich8lan;
721 /* link info */
722 mac->ops.get_link_up_info = e1000_get_link_up_info_ich8lan;
723 /* multicast address update */
724 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic;
725 /* clear hardware counters */
726 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_ich8lan;
727
728 /* LED and other operations */
729 switch (mac->type) {
730 case e1000_ich8lan:
731 case e1000_ich9lan:
732 case e1000_ich10lan:
733 /* check management mode */
734 mac->ops.check_mng_mode = e1000_check_mng_mode_ich8lan;
735 /* ID LED init */
736 mac->ops.id_led_init = e1000_id_led_init_generic;
737 /* blink LED */
738 mac->ops.blink_led = e1000_blink_led_generic;
739 /* setup LED */
740 mac->ops.setup_led = e1000_setup_led_generic;
741 /* cleanup LED */
742 mac->ops.cleanup_led = e1000_cleanup_led_ich8lan;
743 /* turn on/off LED */
744 mac->ops.led_on = e1000_led_on_ich8lan;
745 mac->ops.led_off = e1000_led_off_ich8lan;
746 break;
747 case e1000_pch2lan:
748 mac->rar_entry_count = E1000_PCH2_RAR_ENTRIES;
749 mac->ops.rar_set = e1000_rar_set_pch2lan;
750 /* fall-through */
751 case e1000_pch_lpt:
752 /* multicast address update for pch2 */
753 mac->ops.update_mc_addr_list =
754 e1000_update_mc_addr_list_pch2lan;
755 case e1000_pchlan:
756 /* check management mode */
757 mac->ops.check_mng_mode = e1000_check_mng_mode_pchlan;
758 /* ID LED init */
759 mac->ops.id_led_init = e1000_id_led_init_pchlan;
760 /* setup LED */
761 mac->ops.setup_led = e1000_setup_led_pchlan;
762 /* cleanup LED */
763 mac->ops.cleanup_led = e1000_cleanup_led_pchlan;
764 /* turn on/off LED */
765 mac->ops.led_on = e1000_led_on_pchlan;
766 mac->ops.led_off = e1000_led_off_pchlan;
767 break;
768 default:
769 break;
770 }
771
772 if (mac->type == e1000_pch_lpt) {
773 mac->rar_entry_count = E1000_PCH_LPT_RAR_ENTRIES;
774 mac->ops.rar_set = e1000_rar_set_pch_lpt;
775 mac->ops.setup_physical_interface = e1000_setup_copper_link_pch_lpt;
776 mac->ops.set_obff_timer = e1000_set_obff_timer_pch_lpt;
777 }
778
779 /* Enable PCS Lock-loss workaround for ICH8 */
780 if (mac->type == e1000_ich8lan)
781 e1000_set_kmrn_lock_loss_workaround_ich8lan(hw, TRUE);
782
783 return E1000_SUCCESS;
784 }
785
786 /**
787 * __e1000_access_emi_reg_locked - Read/write EMI register
788 * @hw: pointer to the HW structure
789 * @addr: EMI address to program
790 * @data: pointer to value to read/write from/to the EMI address
791 * @read: boolean flag to indicate read or write
792 *
793 * This helper function assumes the SW/FW/HW Semaphore is already acquired.
794 **/
795 static s32 __e1000_access_emi_reg_locked(struct e1000_hw *hw, u16 address,
796 u16 *data, bool read)
797 {
798 s32 ret_val;
799
800 DEBUGFUNC("__e1000_access_emi_reg_locked");
801
802 ret_val = hw->phy.ops.write_reg_locked(hw, I82579_EMI_ADDR, address);
803 if (ret_val)
804 return ret_val;
805
806 if (read)
807 ret_val = hw->phy.ops.read_reg_locked(hw, I82579_EMI_DATA,
808 data);
809 else
810 ret_val = hw->phy.ops.write_reg_locked(hw, I82579_EMI_DATA,
811 *data);
812
813 return ret_val;
814 }
815
816 /**
817 * e1000_read_emi_reg_locked - Read Extended Management Interface register
818 * @hw: pointer to the HW structure
819 * @addr: EMI address to program
820 * @data: value to be read from the EMI address
821 *
822 * Assumes the SW/FW/HW Semaphore is already acquired.
823 **/
824 s32 e1000_read_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 *data)
825 {
826 DEBUGFUNC("e1000_read_emi_reg_locked");
827
828 return __e1000_access_emi_reg_locked(hw, addr, data, TRUE);
829 }
830
831 /**
832 * e1000_write_emi_reg_locked - Write Extended Management Interface register
833 * @hw: pointer to the HW structure
834 * @addr: EMI address to program
835 * @data: value to be written to the EMI address
836 *
837 * Assumes the SW/FW/HW Semaphore is already acquired.
838 **/
839 s32 e1000_write_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 data)
840 {
841 DEBUGFUNC("e1000_read_emi_reg_locked");
842
843 return __e1000_access_emi_reg_locked(hw, addr, &data, FALSE);
844 }
845
846 /**
847 * e1000_set_eee_pchlan - Enable/disable EEE support
848 * @hw: pointer to the HW structure
849 *
850 * Enable/disable EEE based on setting in dev_spec structure, the duplex of
851 * the link and the EEE capabilities of the link partner. The LPI Control
852 * register bits will remain set only if/when link is up.
853 *
854 * EEE LPI must not be asserted earlier than one second after link is up.
855 * On 82579, EEE LPI should not be enabled until such time otherwise there
856 * can be link issues with some switches. Other devices can have EEE LPI
857 * enabled immediately upon link up since they have a timer in hardware which
858 * prevents LPI from being asserted too early.
859 **/
860 s32 e1000_set_eee_pchlan(struct e1000_hw *hw)
861 {
862 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
863 s32 ret_val;
864 u16 lpa, pcs_status, adv, adv_addr, lpi_ctrl, data;
865
866 DEBUGFUNC("e1000_set_eee_pchlan");
867
868 switch (hw->phy.type) {
869 case e1000_phy_82579:
870 lpa = I82579_EEE_LP_ABILITY;
871 pcs_status = I82579_EEE_PCS_STATUS;
872 adv_addr = I82579_EEE_ADVERTISEMENT;
873 break;
874 case e1000_phy_i217:
875 lpa = I217_EEE_LP_ABILITY;
876 pcs_status = I217_EEE_PCS_STATUS;
877 adv_addr = I217_EEE_ADVERTISEMENT;
878 break;
879 default:
880 return E1000_SUCCESS;
881 }
882
883 ret_val = hw->phy.ops.acquire(hw);
884 if (ret_val)
885 return ret_val;
886
887 ret_val = hw->phy.ops.read_reg_locked(hw, I82579_LPI_CTRL, &lpi_ctrl);
888 if (ret_val)
889 goto release;
890
891 /* Clear bits that enable EEE in various speeds */
892 lpi_ctrl &= ~I82579_LPI_CTRL_ENABLE_MASK;
893
894 /* Enable EEE if not disabled by user */
895 if (!dev_spec->eee_disable) {
896 /* Save off link partner's EEE ability */
897 ret_val = e1000_read_emi_reg_locked(hw, lpa,
898 &dev_spec->eee_lp_ability);
899 if (ret_val)
900 goto release;
901
902 /* Read EEE advertisement */
903 ret_val = e1000_read_emi_reg_locked(hw, adv_addr, &adv);
904 if (ret_val)
905 goto release;
906
907 /* Enable EEE only for speeds in which the link partner is
908 * EEE capable and for which we advertise EEE.
909 */
910 if (adv & dev_spec->eee_lp_ability & I82579_EEE_1000_SUPPORTED)
911 lpi_ctrl |= I82579_LPI_CTRL_1000_ENABLE;
912
913 if (adv & dev_spec->eee_lp_ability & I82579_EEE_100_SUPPORTED) {
914 hw->phy.ops.read_reg_locked(hw, PHY_LP_ABILITY, &data);
915 if (data & NWAY_LPAR_100TX_FD_CAPS)
916 lpi_ctrl |= I82579_LPI_CTRL_100_ENABLE;
917 else
918 /* EEE is not supported in 100Half, so ignore
919 * partner's EEE in 100 ability if full-duplex
920 * is not advertised.
921 */
922 dev_spec->eee_lp_ability &=
923 ~I82579_EEE_100_SUPPORTED;
924 }
925 }
926
927 if (hw->phy.type == e1000_phy_82579) {
928 ret_val = e1000_read_emi_reg_locked(hw, I82579_LPI_PLL_SHUT,
929 &data);
930 if (ret_val)
931 goto release;
932
933 data &= ~I82579_LPI_100_PLL_SHUT;
934 ret_val = e1000_write_emi_reg_locked(hw, I82579_LPI_PLL_SHUT,
935 data);
936 }
937
938 /* R/Clr IEEE MMD 3.1 bits 11:10 - Tx/Rx LPI Received */
939 ret_val = e1000_read_emi_reg_locked(hw, pcs_status, &data);
940 if (ret_val)
941 goto release;
942
943 ret_val = hw->phy.ops.write_reg_locked(hw, I82579_LPI_CTRL, lpi_ctrl);
944 release:
945 hw->phy.ops.release(hw);
946
947 return ret_val;
948 }
949
950 /**
951 * e1000_k1_workaround_lpt_lp - K1 workaround on Lynxpoint-LP
952 * @hw: pointer to the HW structure
953 * @link: link up bool flag
954 *
955 * When K1 is enabled for 1Gbps, the MAC can miss 2 DMA completion indications
956 * preventing further DMA write requests. Workaround the issue by disabling
957 * the de-assertion of the clock request when in 1Gpbs mode.
958 * Also, set appropriate Tx re-transmission timeouts for 10 and 100Half link
959 * speeds in order to avoid Tx hangs.
960 **/
961 static s32 e1000_k1_workaround_lpt_lp(struct e1000_hw *hw, bool link)
962 {
963 u32 fextnvm6 = E1000_READ_REG(hw, E1000_FEXTNVM6);
964 u32 status = E1000_READ_REG(hw, E1000_STATUS);
965 s32 ret_val = E1000_SUCCESS;
966 u16 reg;
967
968 if (link && (status & E1000_STATUS_SPEED_1000)) {
969 ret_val = hw->phy.ops.acquire(hw);
970 if (ret_val)
971 return ret_val;
972
973 ret_val =
974 e1000_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
975 &reg);
976 if (ret_val)
977 goto release;
978
979 ret_val =
980 e1000_write_kmrn_reg_locked(hw,
981 E1000_KMRNCTRLSTA_K1_CONFIG,
982 reg &
983 ~E1000_KMRNCTRLSTA_K1_ENABLE);
984 if (ret_val)
985 goto release;
986
987 usec_delay(10);
988
989 E1000_WRITE_REG(hw, E1000_FEXTNVM6,
990 fextnvm6 | E1000_FEXTNVM6_REQ_PLL_CLK);
991
992 ret_val =
993 e1000_write_kmrn_reg_locked(hw,
994 E1000_KMRNCTRLSTA_K1_CONFIG,
995 reg);
996 release:
997 hw->phy.ops.release(hw);
998 } else {
999 /* clear FEXTNVM6 bit 8 on link down or 10/100 */
1000 fextnvm6 &= ~E1000_FEXTNVM6_REQ_PLL_CLK;
1001
1002 if (!link || ((status & E1000_STATUS_SPEED_100) &&
1003 (status & E1000_STATUS_FD)))
1004 goto update_fextnvm6;
1005
1006 ret_val = hw->phy.ops.read_reg(hw, I217_INBAND_CTRL, &reg);
1007 if (ret_val)
1008 return ret_val;
1009
1010 /* Clear link status transmit timeout */
1011 reg &= ~I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_MASK;
1012
1013 if (status & E1000_STATUS_SPEED_100) {
1014 /* Set inband Tx timeout to 5x10us for 100Half */
1015 reg |= 5 << I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT;
1016
1017 /* Do not extend the K1 entry latency for 100Half */
1018 fextnvm6 &= ~E1000_FEXTNVM6_ENABLE_K1_ENTRY_CONDITION;
1019 } else {
1020 /* Set inband Tx timeout to 50x10us for 10Full/Half */
1021 reg |= 50 <<
1022 I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT;
1023
1024 /* Extend the K1 entry latency for 10 Mbps */
1025 fextnvm6 |= E1000_FEXTNVM6_ENABLE_K1_ENTRY_CONDITION;
1026 }
1027
1028 ret_val = hw->phy.ops.write_reg(hw, I217_INBAND_CTRL, reg);
1029 if (ret_val)
1030 return ret_val;
1031
1032 update_fextnvm6:
1033 E1000_WRITE_REG(hw, E1000_FEXTNVM6, fextnvm6);
1034 }
1035
1036 return ret_val;
1037 }
1038
1039 static u64 e1000_ltr2ns(u16 ltr)
1040 {
1041 u32 value, scale;
1042
1043 /* Determine the latency in nsec based on the LTR value & scale */
1044 value = ltr & E1000_LTRV_VALUE_MASK;
1045 scale = (ltr & E1000_LTRV_SCALE_MASK) >> E1000_LTRV_SCALE_SHIFT;
1046
1047 return value * (1 << (scale * E1000_LTRV_SCALE_FACTOR));
1048 }
1049
1050 /**
1051 * e1000_platform_pm_pch_lpt - Set platform power management values
1052 * @hw: pointer to the HW structure
1053 * @link: bool indicating link status
1054 *
1055 * Set the Latency Tolerance Reporting (LTR) values for the "PCIe-like"
1056 * GbE MAC in the Lynx Point PCH based on Rx buffer size and link speed
1057 * when link is up (which must not exceed the maximum latency supported
1058 * by the platform), otherwise specify there is no LTR requirement.
1059 * Unlike TRUE-PCIe devices which set the LTR maximum snoop/no-snoop
1060 * latencies in the LTR Extended Capability Structure in the PCIe Extended
1061 * Capability register set, on this device LTR is set by writing the
1062 * equivalent snoop/no-snoop latencies in the LTRV register in the MAC and
1063 * set the SEND bit to send an Intel On-chip System Fabric sideband (IOSF-SB)
1064 * message to the PMC.
1065 *
1066 * Use the LTR value to calculate the Optimized Buffer Flush/Fill (OBFF)
1067 * high-water mark.
1068 **/
1069 static s32 e1000_platform_pm_pch_lpt(struct e1000_hw *hw, bool link)
1070 {
1071 u32 reg = link << (E1000_LTRV_REQ_SHIFT + E1000_LTRV_NOSNOOP_SHIFT) |
1072 link << E1000_LTRV_REQ_SHIFT | E1000_LTRV_SEND;
1073 u16 lat_enc = 0; /* latency encoded */
1074 s32 obff_hwm = 0;
1075
1076 DEBUGFUNC("e1000_platform_pm_pch_lpt");
1077
1078 if (link) {
1079 u16 speed, duplex, scale = 0;
1080 u16 max_snoop, max_nosnoop;
1081 u16 max_ltr_enc; /* max LTR latency encoded */
1082 s64 lat_ns; /* latency (ns) */
1083 s64 value;
1084 u32 rxa;
1085
1086 if (!hw->mac.max_frame_size) {
1087 DEBUGOUT("max_frame_size not set.\n");
1088 return -E1000_ERR_CONFIG;
1089 }
1090
1091 hw->mac.ops.get_link_up_info(hw, &speed, &duplex);
1092 if (!speed) {
1093 DEBUGOUT("Speed not set.\n");
1094 return -E1000_ERR_CONFIG;
1095 }
1096
1097 /* Rx Packet Buffer Allocation size (KB) */
1098 rxa = E1000_READ_REG(hw, E1000_PBA) & E1000_PBA_RXA_MASK;
1099
1100 /* Determine the maximum latency tolerated by the device.
1101 *
1102 * Per the PCIe spec, the tolerated latencies are encoded as
1103 * a 3-bit encoded scale (only 0-5 are valid) multiplied by
1104 * a 10-bit value (0-1023) to provide a range from 1 ns to
1105 * 2^25*(2^10-1) ns. The scale is encoded as 0=2^0ns,
1106 * 1=2^5ns, 2=2^10ns,...5=2^25ns.
1107 */
1108 lat_ns = ((s64)rxa * 1024 -
1109 (2 * (s64)hw->mac.max_frame_size)) * 8 * 1000;
1110 if (lat_ns < 0)
1111 lat_ns = 0;
1112 else
1113 lat_ns /= speed;
1114
1115 value = lat_ns;
1116 while (value > E1000_LTRV_VALUE_MASK) {
1117 scale++;
1118 value = E1000_DIVIDE_ROUND_UP(value, (1 << 5));
1119 }
1120 if (scale > E1000_LTRV_SCALE_MAX) {
1121 DEBUGOUT1("Invalid LTR latency scale %d\n", scale);
1122 return -E1000_ERR_CONFIG;
1123 }
1124 lat_enc = (u16)((scale << E1000_LTRV_SCALE_SHIFT) | value);
1125
1126 /* Determine the maximum latency tolerated by the platform */
1127 e1000_read_pci_cfg(hw, E1000_PCI_LTR_CAP_LPT, &max_snoop);
1128 e1000_read_pci_cfg(hw, E1000_PCI_LTR_CAP_LPT + 2, &max_nosnoop);
1129 max_ltr_enc = E1000_MAX(max_snoop, max_nosnoop);
1130
1131 if (lat_enc > max_ltr_enc) {
1132 lat_enc = max_ltr_enc;
1133 lat_ns = e1000_ltr2ns(max_ltr_enc);
1134 }
1135
1136 if (lat_ns) {
1137 lat_ns *= speed * 1000;
1138 lat_ns /= 8;
1139 lat_ns /= 1000000000;
1140 obff_hwm = (s32)(rxa - lat_ns);
1141 }
1142 if ((obff_hwm < 0) || (obff_hwm > E1000_SVT_OFF_HWM_MASK)) {
1143 DEBUGOUT1("Invalid high water mark %d\n", obff_hwm);
1144 return -E1000_ERR_CONFIG;
1145 }
1146 }
1147
1148 /* Set Snoop and No-Snoop latencies the same */
1149 reg |= lat_enc | (lat_enc << E1000_LTRV_NOSNOOP_SHIFT);
1150 E1000_WRITE_REG(hw, E1000_LTRV, reg);
1151
1152 /* Set OBFF high water mark */
1153 reg = E1000_READ_REG(hw, E1000_SVT) & ~E1000_SVT_OFF_HWM_MASK;
1154 reg |= obff_hwm;
1155 E1000_WRITE_REG(hw, E1000_SVT, reg);
1156
1157 /* Enable OBFF */
1158 reg = E1000_READ_REG(hw, E1000_SVCR);
1159 reg |= E1000_SVCR_OFF_EN;
1160 /* Always unblock interrupts to the CPU even when the system is
1161 * in OBFF mode. This ensures that small round-robin traffic
1162 * (like ping) does not get dropped or experience long latency.
1163 */
1164 reg |= E1000_SVCR_OFF_MASKINT;
1165 E1000_WRITE_REG(hw, E1000_SVCR, reg);
1166
1167 return E1000_SUCCESS;
1168 }
1169
1170 /**
1171 * e1000_set_obff_timer_pch_lpt - Update Optimized Buffer Flush/Fill timer
1172 * @hw: pointer to the HW structure
1173 * @itr: interrupt throttling rate
1174 *
1175 * Configure OBFF with the updated interrupt rate.
1176 **/
1177 static s32 e1000_set_obff_timer_pch_lpt(struct e1000_hw *hw, u32 itr)
1178 {
1179 u32 svcr;
1180 s32 timer;
1181
1182 DEBUGFUNC("e1000_set_obff_timer_pch_lpt");
1183
1184 /* Convert ITR value into microseconds for OBFF timer */
1185 timer = itr & E1000_ITR_MASK;
1186 timer = (timer * E1000_ITR_MULT) / 1000;
1187
1188 if ((timer < 0) || (timer > E1000_ITR_MASK)) {
1189 DEBUGOUT1("Invalid OBFF timer %d\n", timer);
1190 return -E1000_ERR_CONFIG;
1191 }
1192
1193 svcr = E1000_READ_REG(hw, E1000_SVCR);
1194 svcr &= ~E1000_SVCR_OFF_TIMER_MASK;
1195 svcr |= timer << E1000_SVCR_OFF_TIMER_SHIFT;
1196 E1000_WRITE_REG(hw, E1000_SVCR, svcr);
1197
1198 return E1000_SUCCESS;
1199 }
1200
1201 /**
1202 * e1000_enable_ulp_lpt_lp - configure Ultra Low Power mode for LynxPoint-LP
1203 * @hw: pointer to the HW structure
1204 * @to_sx: boolean indicating a system power state transition to Sx
1205 *
1206 * When link is down, configure ULP mode to significantly reduce the power
1207 * to the PHY. If on a Manageability Engine (ME) enabled system, tell the
1208 * ME firmware to start the ULP configuration. If not on an ME enabled
1209 * system, configure the ULP mode by software.
1210 */
1211 s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
1212 {
1213 u32 mac_reg;
1214 s32 ret_val = E1000_SUCCESS;
1215 u16 phy_reg;
1216
1217 if ((hw->mac.type < e1000_pch_lpt) ||
1218 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_LM) ||
1219 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_V) ||
1220 (hw->device_id == E1000_DEV_ID_PCH_I218_LM2) ||
1221 (hw->device_id == E1000_DEV_ID_PCH_I218_V2) ||
1222 (hw->dev_spec.ich8lan.ulp_state == e1000_ulp_state_on))
1223 return 0;
1224
1225 if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
1226 /* Request ME configure ULP mode in the PHY */
1227 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1228 mac_reg |= E1000_H2ME_ULP | E1000_H2ME_ENFORCE_SETTINGS;
1229 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1230
1231 goto out;
1232 }
1233
1234 if (!to_sx) {
1235 int i = 0;
1236
1237 /* Poll up to 5 seconds for Cable Disconnected indication */
1238 while (!(E1000_READ_REG(hw, E1000_FEXT) &
1239 E1000_FEXT_PHY_CABLE_DISCONNECTED)) {
1240 /* Bail if link is re-acquired */
1241 if (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)
1242 return -E1000_ERR_PHY;
1243
1244 if (i++ == 100)
1245 break;
1246
1247 msec_delay(50);
1248 }
1249 DEBUGOUT2("CABLE_DISCONNECTED %s set after %dmsec\n",
1250 (E1000_READ_REG(hw, E1000_FEXT) &
1251 E1000_FEXT_PHY_CABLE_DISCONNECTED) ? "" : "not",
1252 i * 50);
1253 }
1254
1255 ret_val = hw->phy.ops.acquire(hw);
1256 if (ret_val)
1257 goto out;
1258
1259 /* Force SMBus mode in PHY */
1260 ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
1261 if (ret_val)
1262 goto release;
1263 phy_reg |= CV_SMB_CTRL_FORCE_SMBUS;
1264 e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
1265
1266 /* Force SMBus mode in MAC */
1267 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
1268 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
1269 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
1270
1271 /* Set Inband ULP Exit, Reset to SMBus mode and
1272 * Disable SMBus Release on PERST# in PHY
1273 */
1274 ret_val = e1000_read_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, &phy_reg);
1275 if (ret_val)
1276 goto release;
1277 phy_reg |= (I218_ULP_CONFIG1_RESET_TO_SMBUS |
1278 I218_ULP_CONFIG1_DISABLE_SMB_PERST);
1279 if (to_sx) {
1280 if (E1000_READ_REG(hw, E1000_WUFC) & E1000_WUFC_LNKC)
1281 phy_reg |= I218_ULP_CONFIG1_WOL_HOST;
1282
1283 phy_reg |= I218_ULP_CONFIG1_STICKY_ULP;
1284 } else {
1285 phy_reg |= I218_ULP_CONFIG1_INBAND_EXIT;
1286 }
1287 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1288
1289 /* Set Disable SMBus Release on PERST# in MAC */
1290 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM7);
1291 mac_reg |= E1000_FEXTNVM7_DISABLE_SMB_PERST;
1292 E1000_WRITE_REG(hw, E1000_FEXTNVM7, mac_reg);
1293
1294 /* Commit ULP changes in PHY by starting auto ULP configuration */
1295 phy_reg |= I218_ULP_CONFIG1_START;
1296 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1297 release:
1298 hw->phy.ops.release(hw);
1299 out:
1300 if (ret_val) {
1301 DEBUGOUT1("Error in ULP enable flow: %d\n", ret_val);
1302 } else
1303 hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_on;
1304
1305 return ret_val;
1306 }
1307
1308 /**
1309 * e1000_disable_ulp_lpt_lp - unconfigure Ultra Low Power mode for LynxPoint-LP
1310 * @hw: pointer to the HW structure
1311 * @force: boolean indicating whether or not to force disabling ULP
1312 *
1313 * Un-configure ULP mode when link is up, the system is transitioned from
1314 * Sx or the driver is unloaded. If on a Manageability Engine (ME) enabled
1315 * system, poll for an indication from ME that ULP has been un-configured.
1316 * If not on an ME enabled system, un-configure the ULP mode by software.
1317 *
1318 * During nominal operation, this function is called when link is acquired
1319 * to disable ULP mode (force=FALSE); otherwise, for example when unloading
1320 * the driver or during Sx->S0 transitions, this is called with force=TRUE
1321 * to forcibly disable ULP.
1322 */
1323 s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
1324 {
1325 s32 ret_val = E1000_SUCCESS;
1326 u32 mac_reg;
1327 u16 phy_reg;
1328 int i = 0;
1329
1330 if ((hw->mac.type < e1000_pch_lpt) ||
1331 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_LM) ||
1332 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_V) ||
1333 (hw->device_id == E1000_DEV_ID_PCH_I218_LM2) ||
1334 (hw->device_id == E1000_DEV_ID_PCH_I218_V2) ||
1335 (hw->dev_spec.ich8lan.ulp_state == e1000_ulp_state_off))
1336 return 0;
1337
1338 if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
1339 if (force) {
1340 /* Request ME un-configure ULP mode in the PHY */
1341 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1342 mac_reg &= ~E1000_H2ME_ULP;
1343 mac_reg |= E1000_H2ME_ENFORCE_SETTINGS;
1344 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1345 }
1346
1347 /* Poll up to 100msec for ME to clear ULP_CFG_DONE */
1348 while (E1000_READ_REG(hw, E1000_FWSM) &
1349 E1000_FWSM_ULP_CFG_DONE) {
1350 if (i++ == 10) {
1351 ret_val = -E1000_ERR_PHY;
1352 goto out;
1353 }
1354
1355 msec_delay(10);
1356 }
1357 DEBUGOUT1("ULP_CONFIG_DONE cleared after %dmsec\n", i * 10);
1358
1359 if (force) {
1360 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1361 mac_reg &= ~E1000_H2ME_ENFORCE_SETTINGS;
1362 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1363 } else {
1364 /* Clear H2ME.ULP after ME ULP configuration */
1365 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1366 mac_reg &= ~E1000_H2ME_ULP;
1367 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1368 }
1369
1370 goto out;
1371 }
1372
1373 ret_val = hw->phy.ops.acquire(hw);
1374 if (ret_val)
1375 goto out;
1376
1377 if (force)
1378 /* Toggle LANPHYPC Value bit */
1379 e1000_toggle_lanphypc_pch_lpt(hw);
1380
1381 /* Unforce SMBus mode in PHY */
1382 ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
1383 if (ret_val) {
1384 /* The MAC might be in PCIe mode, so temporarily force to
1385 * SMBus mode in order to access the PHY.
1386 */
1387 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
1388 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
1389 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
1390
1391 msec_delay(50);
1392
1393 ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL,
1394 &phy_reg);
1395 if (ret_val)
1396 goto release;
1397 }
1398 phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
1399 e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
1400
1401 /* Unforce SMBus mode in MAC */
1402 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
1403 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
1404 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
1405
1406 /* When ULP mode was previously entered, K1 was disabled by the
1407 * hardware. Re-Enable K1 in the PHY when exiting ULP.
1408 */
1409 ret_val = e1000_read_phy_reg_hv_locked(hw, HV_PM_CTRL, &phy_reg);
1410 if (ret_val)
1411 goto release;
1412 phy_reg |= HV_PM_CTRL_K1_ENABLE;
1413 e1000_write_phy_reg_hv_locked(hw, HV_PM_CTRL, phy_reg);
1414
1415 /* Clear ULP enabled configuration */
1416 ret_val = e1000_read_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, &phy_reg);
1417 if (ret_val)
1418 goto release;
1419 phy_reg &= ~(I218_ULP_CONFIG1_IND |
1420 I218_ULP_CONFIG1_STICKY_ULP |
1421 I218_ULP_CONFIG1_RESET_TO_SMBUS |
1422 I218_ULP_CONFIG1_WOL_HOST |
1423 I218_ULP_CONFIG1_INBAND_EXIT |
1424 I218_ULP_CONFIG1_DISABLE_SMB_PERST);
1425 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1426
1427 /* Commit ULP changes by starting auto ULP configuration */
1428 phy_reg |= I218_ULP_CONFIG1_START;
1429 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1430
1431 /* Clear Disable SMBus Release on PERST# in MAC */
1432 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM7);
1433 mac_reg &= ~E1000_FEXTNVM7_DISABLE_SMB_PERST;
1434 E1000_WRITE_REG(hw, E1000_FEXTNVM7, mac_reg);
1435
1436 release:
1437 hw->phy.ops.release(hw);
1438 if (force) {
1439 hw->phy.ops.reset(hw);
1440 msec_delay(50);
1441 }
1442 out:
1443 if (ret_val) {
1444 DEBUGOUT1("Error in ULP disable flow: %d\n", ret_val);
1445 } else
1446 hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_off;
1447
1448 return ret_val;
1449 }
1450
1451 /**
1452 * e1000_check_for_copper_link_ich8lan - Check for link (Copper)
1453 * @hw: pointer to the HW structure
1454 *
1455 * Checks to see of the link status of the hardware has changed. If a
1456 * change in link status has been detected, then we read the PHY registers
1457 * to get the current speed/duplex if link exists.
1458 **/
1459 static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
1460 {
1461 struct e1000_mac_info *mac = &hw->mac;
1462 s32 ret_val;
1463 bool link;
1464 u16 phy_reg;
1465
1466 DEBUGFUNC("e1000_check_for_copper_link_ich8lan");
1467
1468 /* We only want to go out to the PHY registers to see if Auto-Neg
1469 * has completed and/or if our link status has changed. The
1470 * get_link_status flag is set upon receiving a Link Status
1471 * Change or Rx Sequence Error interrupt.
1472 */
1473 if (!mac->get_link_status)
1474 return E1000_SUCCESS;
1475
1476 /* First we want to see if the MII Status Register reports
1477 * link. If so, then we want to get the current speed/duplex
1478 * of the PHY.
1479 */
1480 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
1481 if (ret_val)
1482 return ret_val;
1483
1484 if (hw->mac.type == e1000_pchlan) {
1485 ret_val = e1000_k1_gig_workaround_hv(hw, link);
1486 if (ret_val)
1487 return ret_val;
1488 }
1489
1490 /* When connected at 10Mbps half-duplex, some parts are excessively
1491 * aggressive resulting in many collisions. To avoid this, increase
1492 * the IPG and reduce Rx latency in the PHY.
1493 */
1494 if (((hw->mac.type == e1000_pch2lan) ||
1495 (hw->mac.type == e1000_pch_lpt)) && link) {
1496 u32 reg;
1497 reg = E1000_READ_REG(hw, E1000_STATUS);
1498 if (!(reg & (E1000_STATUS_FD | E1000_STATUS_SPEED_MASK))) {
1499 u16 emi_addr;
1500
1501 reg = E1000_READ_REG(hw, E1000_TIPG);
1502 reg &= ~E1000_TIPG_IPGT_MASK;
1503 reg |= 0xFF;
1504 E1000_WRITE_REG(hw, E1000_TIPG, reg);
1505
1506 /* Reduce Rx latency in analog PHY */
1507 ret_val = hw->phy.ops.acquire(hw);
1508 if (ret_val)
1509 return ret_val;
1510
1511 if (hw->mac.type == e1000_pch2lan)
1512 emi_addr = I82579_RX_CONFIG;
1513 else
1514 emi_addr = I217_RX_CONFIG;
1515 ret_val = e1000_write_emi_reg_locked(hw, emi_addr, 0);
1516
1517 hw->phy.ops.release(hw);
1518
1519 if (ret_val)
1520 return ret_val;
1521 }
1522 }
1523
1524 /* Work-around I218 hang issue */
1525 if ((hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
1526 (hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_V) ||
1527 (hw->device_id == E1000_DEV_ID_PCH_I218_LM3) ||
1528 (hw->device_id == E1000_DEV_ID_PCH_I218_V3)) {
1529 ret_val = e1000_k1_workaround_lpt_lp(hw, link);
1530 if (ret_val)
1531 return ret_val;
1532 }
1533 if (hw->mac.type == e1000_pch_lpt) {
1534 /* Set platform power management values for
1535 * Latency Tolerance Reporting (LTR)
1536 * Optimized Buffer Flush/Fill (OBFF)
1537 */
1538 ret_val = e1000_platform_pm_pch_lpt(hw, link);
1539 if (ret_val)
1540 return ret_val;
1541 }
1542
1543 /* Clear link partner's EEE ability */
1544 hw->dev_spec.ich8lan.eee_lp_ability = 0;
1545
1546 if (!link)
1547 return E1000_SUCCESS; /* No link detected */
1548
1549 mac->get_link_status = FALSE;
1550
1551 switch (hw->mac.type) {
1552 case e1000_pch2lan:
1553 ret_val = e1000_k1_workaround_lv(hw);
1554 if (ret_val)
1555 return ret_val;
1556 /* fall-thru */
1557 case e1000_pchlan:
1558 if (hw->phy.type == e1000_phy_82578) {
1559 ret_val = e1000_link_stall_workaround_hv(hw);
1560 if (ret_val)
1561 return ret_val;
1562 }
1563
1564 /* Workaround for PCHx parts in half-duplex:
1565 * Set the number of preambles removed from the packet
1566 * when it is passed from the PHY to the MAC to prevent
1567 * the MAC from misinterpreting the packet type.
1568 */
1569 hw->phy.ops.read_reg(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
1570 phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
1571
1572 if ((E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_FD) !=
1573 E1000_STATUS_FD)
1574 phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
1575
1576 hw->phy.ops.write_reg(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
1577 break;
1578 default:
1579 break;
1580 }
1581
1582 /* Check if there was DownShift, must be checked
1583 * immediately after link-up
1584 */
1585 e1000_check_downshift_generic(hw);
1586
1587 /* Enable/Disable EEE after link up */
1588 if (hw->phy.type > e1000_phy_82579) {
1589 ret_val = e1000_set_eee_pchlan(hw);
1590 if (ret_val)
1591 return ret_val;
1592 }
1593
1594 /* If we are forcing speed/duplex, then we simply return since
1595 * we have already determined whether we have link or not.
1596 */
1597 if (!mac->autoneg)
1598 return -E1000_ERR_CONFIG;
1599
1600 /* Auto-Neg is enabled. Auto Speed Detection takes care
1601 * of MAC speed/duplex configuration. So we only need to
1602 * configure Collision Distance in the MAC.
1603 */
1604 mac->ops.config_collision_dist(hw);
1605
1606 /* Configure Flow Control now that Auto-Neg has completed.
1607 * First, we need to restore the desired flow control
1608 * settings because we may have had to re-autoneg with a
1609 * different link partner.
1610 */
1611 ret_val = e1000_config_fc_after_link_up_generic(hw);
1612 if (ret_val)
1613 DEBUGOUT("Error configuring flow control\n");
1614
1615 return ret_val;
1616 }
1617
1618 /**
1619 * e1000_init_function_pointers_ich8lan - Initialize ICH8 function pointers
1620 * @hw: pointer to the HW structure
1621 *
1622 * Initialize family-specific function pointers for PHY, MAC, and NVM.
1623 **/
1624 void e1000_init_function_pointers_ich8lan(struct e1000_hw *hw)
1625 {
1626 DEBUGFUNC("e1000_init_function_pointers_ich8lan");
1627
1628 hw->mac.ops.init_params = e1000_init_mac_params_ich8lan;
1629 hw->nvm.ops.init_params = e1000_init_nvm_params_ich8lan;
1630 switch (hw->mac.type) {
1631 case e1000_ich8lan:
1632 case e1000_ich9lan:
1633 case e1000_ich10lan:
1634 hw->phy.ops.init_params = e1000_init_phy_params_ich8lan;
1635 break;
1636 case e1000_pchlan:
1637 case e1000_pch2lan:
1638 case e1000_pch_lpt:
1639 hw->phy.ops.init_params = e1000_init_phy_params_pchlan;
1640 break;
1641 default:
1642 break;
1643 }
1644 }
1645
1646 /**
1647 * e1000_acquire_nvm_ich8lan - Acquire NVM mutex
1648 * @hw: pointer to the HW structure
1649 *
1650 * Acquires the mutex for performing NVM operations.
1651 **/
1652 static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw)
1653 {
1654 DEBUGFUNC("e1000_acquire_nvm_ich8lan");
1655
1656 E1000_MUTEX_LOCK(&hw->dev_spec.ich8lan.nvm_mutex);
1657
1658 return E1000_SUCCESS;
1659 }
1660
1661 /**
1662 * e1000_release_nvm_ich8lan - Release NVM mutex
1663 * @hw: pointer to the HW structure
1664 *
1665 * Releases the mutex used while performing NVM operations.
1666 **/
1667 static void e1000_release_nvm_ich8lan(struct e1000_hw *hw)
1668 {
1669 DEBUGFUNC("e1000_release_nvm_ich8lan");
1670
1671 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.nvm_mutex);
1672
1673 return;
1674 }
1675
1676 /**
1677 * e1000_acquire_swflag_ich8lan - Acquire software control flag
1678 * @hw: pointer to the HW structure
1679 *
1680 * Acquires the software control flag for performing PHY and select
1681 * MAC CSR accesses.
1682 **/
1683 static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
1684 {
1685 u32 extcnf_ctrl, timeout = PHY_CFG_TIMEOUT;
1686 s32 ret_val = E1000_SUCCESS;
1687
1688 DEBUGFUNC("e1000_acquire_swflag_ich8lan");
1689
1690 E1000_MUTEX_LOCK(&hw->dev_spec.ich8lan.swflag_mutex);
1691
1692 while (timeout) {
1693 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
1694 if (!(extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG))
1695 break;
1696
1697 msec_delay_irq(1);
1698 timeout--;
1699 }
1700
1701 if (!timeout) {
1702 DEBUGOUT("SW has already locked the resource.\n");
1703 ret_val = -E1000_ERR_CONFIG;
1704 goto out;
1705 }
1706
1707 timeout = SW_FLAG_TIMEOUT;
1708
1709 extcnf_ctrl |= E1000_EXTCNF_CTRL_SWFLAG;
1710 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
1711
1712 while (timeout) {
1713 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
1714 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG)
1715 break;
1716
1717 msec_delay_irq(1);
1718 timeout--;
1719 }
1720
1721 if (!timeout) {
1722 DEBUGOUT2("Failed to acquire the semaphore, FW or HW has it: FWSM=0x%8.8x EXTCNF_CTRL=0x%8.8x)\n",
1723 E1000_READ_REG(hw, E1000_FWSM), extcnf_ctrl);
1724 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
1725 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
1726 ret_val = -E1000_ERR_CONFIG;
1727 goto out;
1728 }
1729
1730 out:
1731 if (ret_val)
1732 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
1733
1734 return ret_val;
1735 }
1736
1737 /**
1738 * e1000_release_swflag_ich8lan - Release software control flag
1739 * @hw: pointer to the HW structure
1740 *
1741 * Releases the software control flag for performing PHY and select
1742 * MAC CSR accesses.
1743 **/
1744 static void e1000_release_swflag_ich8lan(struct e1000_hw *hw)
1745 {
1746 u32 extcnf_ctrl;
1747
1748 DEBUGFUNC("e1000_release_swflag_ich8lan");
1749
1750 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
1751
1752 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG) {
1753 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
1754 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
1755 } else {
1756 DEBUGOUT("Semaphore unexpectedly released by sw/fw/hw\n");
1757 }
1758
1759 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
1760
1761 return;
1762 }
1763
1764 /**
1765 * e1000_check_mng_mode_ich8lan - Checks management mode
1766 * @hw: pointer to the HW structure
1767 *
1768 * This checks if the adapter has any manageability enabled.
1769 * This is a function pointer entry point only called by read/write
1770 * routines for the PHY and NVM parts.
1771 **/
1772 static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw)
1773 {
1774 u32 fwsm;
1775
1776 DEBUGFUNC("e1000_check_mng_mode_ich8lan");
1777
1778 fwsm = E1000_READ_REG(hw, E1000_FWSM);
1779
1780 return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
1781 ((fwsm & E1000_FWSM_MODE_MASK) ==
1782 (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
1783 }
1784
1785 /**
1786 * e1000_check_mng_mode_pchlan - Checks management mode
1787 * @hw: pointer to the HW structure
1788 *
1789 * This checks if the adapter has iAMT enabled.
1790 * This is a function pointer entry point only called by read/write
1791 * routines for the PHY and NVM parts.
1792 **/
1793 static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw)
1794 {
1795 u32 fwsm;
1796
1797 DEBUGFUNC("e1000_check_mng_mode_pchlan");
1798
1799 fwsm = E1000_READ_REG(hw, E1000_FWSM);
1800
1801 return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
1802 (fwsm & (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
1803 }
1804
1805 /**
1806 * e1000_rar_set_pch2lan - Set receive address register
1807 * @hw: pointer to the HW structure
1808 * @addr: pointer to the receive address
1809 * @index: receive address array register
1810 *
1811 * Sets the receive address array register at index to the address passed
1812 * in by addr. For 82579, RAR[0] is the base address register that is to
1813 * contain the MAC address but RAR[1-6] are reserved for manageability (ME).
1814 * Use SHRA[0-3] in place of those reserved for ME.
1815 **/
1816 static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index)
1817 {
1818 u32 rar_low, rar_high;
1819
1820 DEBUGFUNC("e1000_rar_set_pch2lan");
1821
1822 /* HW expects these in little endian so we reverse the byte order
1823 * from network order (big endian) to little endian
1824 */
1825 rar_low = ((u32) addr[0] |
1826 ((u32) addr[1] << 8) |
1827 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
1828
1829 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
1830
1831 /* If MAC address zero, no need to set the AV bit */
1832 if (rar_low || rar_high)
1833 rar_high |= E1000_RAH_AV;
1834
1835 if (index == 0) {
1836 E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
1837 E1000_WRITE_FLUSH(hw);
1838 E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
1839 E1000_WRITE_FLUSH(hw);
1840 return E1000_SUCCESS;
1841 }
1842
1843 /* RAR[1-6] are owned by manageability. Skip those and program the
1844 * next address into the SHRA register array.
1845 */
1846 if (index < (u32) (hw->mac.rar_entry_count)) {
1847 s32 ret_val;
1848
1849 ret_val = e1000_acquire_swflag_ich8lan(hw);
1850 if (ret_val)
1851 goto out;
1852
1853 E1000_WRITE_REG(hw, E1000_SHRAL(index - 1), rar_low);
1854 E1000_WRITE_FLUSH(hw);
1855 E1000_WRITE_REG(hw, E1000_SHRAH(index - 1), rar_high);
1856 E1000_WRITE_FLUSH(hw);
1857
1858 e1000_release_swflag_ich8lan(hw);
1859
1860 /* verify the register updates */
1861 if ((E1000_READ_REG(hw, E1000_SHRAL(index - 1)) == rar_low) &&
1862 (E1000_READ_REG(hw, E1000_SHRAH(index - 1)) == rar_high))
1863 return E1000_SUCCESS;
1864
1865 DEBUGOUT2("SHRA[%d] might be locked by ME - FWSM=0x%8.8x\n",
1866 (index - 1), E1000_READ_REG(hw, E1000_FWSM));
1867 }
1868
1869 out:
1870 DEBUGOUT1("Failed to write receive address at index %d\n", index);
1871 return -E1000_ERR_CONFIG;
1872 }
1873
1874 /**
1875 * e1000_rar_set_pch_lpt - Set receive address registers
1876 * @hw: pointer to the HW structure
1877 * @addr: pointer to the receive address
1878 * @index: receive address array register
1879 *
1880 * Sets the receive address register array at index to the address passed
1881 * in by addr. For LPT, RAR[0] is the base address register that is to
1882 * contain the MAC address. SHRA[0-10] are the shared receive address
1883 * registers that are shared between the Host and manageability engine (ME).
1884 **/
1885 static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index)
1886 {
1887 u32 rar_low, rar_high;
1888 u32 wlock_mac;
1889
1890 DEBUGFUNC("e1000_rar_set_pch_lpt");
1891
1892 /* HW expects these in little endian so we reverse the byte order
1893 * from network order (big endian) to little endian
1894 */
1895 rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
1896 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
1897
1898 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
1899
1900 /* If MAC address zero, no need to set the AV bit */
1901 if (rar_low || rar_high)
1902 rar_high |= E1000_RAH_AV;
1903
1904 if (index == 0) {
1905 E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
1906 E1000_WRITE_FLUSH(hw);
1907 E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
1908 E1000_WRITE_FLUSH(hw);
1909 return E1000_SUCCESS;
1910 }
1911
1912 /* The manageability engine (ME) can lock certain SHRAR registers that
1913 * it is using - those registers are unavailable for use.
1914 */
1915 if (index < hw->mac.rar_entry_count) {
1916 wlock_mac = E1000_READ_REG(hw, E1000_FWSM) &
1917 E1000_FWSM_WLOCK_MAC_MASK;
1918 wlock_mac >>= E1000_FWSM_WLOCK_MAC_SHIFT;
1919
1920 /* Check if all SHRAR registers are locked */
1921 if (wlock_mac == 1)
1922 goto out;
1923
1924 if ((wlock_mac == 0) || (index <= wlock_mac)) {
1925 s32 ret_val;
1926
1927 ret_val = e1000_acquire_swflag_ich8lan(hw);
1928
1929 if (ret_val)
1930 goto out;
1931
1932 E1000_WRITE_REG(hw, E1000_SHRAL_PCH_LPT(index - 1),
1933 rar_low);
1934 E1000_WRITE_FLUSH(hw);
1935 E1000_WRITE_REG(hw, E1000_SHRAH_PCH_LPT(index - 1),
1936 rar_high);
1937 E1000_WRITE_FLUSH(hw);
1938
1939 e1000_release_swflag_ich8lan(hw);
1940
1941 /* verify the register updates */
1942 if ((E1000_READ_REG(hw, E1000_SHRAL_PCH_LPT(index - 1)) == rar_low) &&
1943 (E1000_READ_REG(hw, E1000_SHRAH_PCH_LPT(index - 1)) == rar_high))
1944 return E1000_SUCCESS;
1945 }
1946 }
1947
1948 out:
1949 DEBUGOUT1("Failed to write receive address at index %d\n", index);
1950 return -E1000_ERR_CONFIG;
1951 }
1952
1953 /**
1954 * e1000_update_mc_addr_list_pch2lan - Update Multicast addresses
1955 * @hw: pointer to the HW structure
1956 * @mc_addr_list: array of multicast addresses to program
1957 * @mc_addr_count: number of multicast addresses to program
1958 *
1959 * Updates entire Multicast Table Array of the PCH2 MAC and PHY.
1960 * The caller must have a packed mc_addr_list of multicast addresses.
1961 **/
1962 static void e1000_update_mc_addr_list_pch2lan(struct e1000_hw *hw,
1963 u8 *mc_addr_list,
1964 u32 mc_addr_count)
1965 {
1966 u16 phy_reg = 0;
1967 int i;
1968 s32 ret_val;
1969
1970 DEBUGFUNC("e1000_update_mc_addr_list_pch2lan");
1971
1972 e1000_update_mc_addr_list_generic(hw, mc_addr_list, mc_addr_count);
1973
1974 ret_val = hw->phy.ops.acquire(hw);
1975 if (ret_val)
1976 return;
1977
1978 ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
1979 if (ret_val)
1980 goto release;
1981
1982 for (i = 0; i < hw->mac.mta_reg_count; i++) {
1983 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
1984 (u16)(hw->mac.mta_shadow[i] &
1985 0xFFFF));
1986 hw->phy.ops.write_reg_page(hw, (BM_MTA(i) + 1),
1987 (u16)((hw->mac.mta_shadow[i] >> 16) &
1988 0xFFFF));
1989 }
1990
1991 e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
1992
1993 release:
1994 hw->phy.ops.release(hw);
1995 }
1996
1997 /**
1998 * e1000_check_reset_block_ich8lan - Check if PHY reset is blocked
1999 * @hw: pointer to the HW structure
2000 *
2001 * Checks if firmware is blocking the reset of the PHY.
2002 * This is a function pointer entry point only called by
2003 * reset routines.
2004 **/
2005 static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
2006 {
2007 u32 fwsm;
2008 bool blocked = FALSE;
2009 int i = 0;
2010
2011 DEBUGFUNC("e1000_check_reset_block_ich8lan");
2012
2013 do {
2014 fwsm = E1000_READ_REG(hw, E1000_FWSM);
2015 if (!(fwsm & E1000_ICH_FWSM_RSPCIPHY)) {
2016 blocked = TRUE;
2017 msec_delay(10);
2018 continue;
2019 }
2020 blocked = FALSE;
2021 } while (blocked && (i++ < 10));
2022 return blocked ? E1000_BLK_PHY_RESET : E1000_SUCCESS;
2023 }
2024
2025 /**
2026 * e1000_write_smbus_addr - Write SMBus address to PHY needed during Sx states
2027 * @hw: pointer to the HW structure
2028 *
2029 * Assumes semaphore already acquired.
2030 *
2031 **/
2032 static s32 e1000_write_smbus_addr(struct e1000_hw *hw)
2033 {
2034 u16 phy_data;
2035 u32 strap = E1000_READ_REG(hw, E1000_STRAP);
2036 u32 freq = (strap & E1000_STRAP_SMT_FREQ_MASK) >>
2037 E1000_STRAP_SMT_FREQ_SHIFT;
2038 s32 ret_val;
2039
2040 strap &= E1000_STRAP_SMBUS_ADDRESS_MASK;
2041
2042 ret_val = e1000_read_phy_reg_hv_locked(hw, HV_SMB_ADDR, &phy_data);
2043 if (ret_val)
2044 return ret_val;
2045
2046 phy_data &= ~HV_SMB_ADDR_MASK;
2047 phy_data |= (strap >> E1000_STRAP_SMBUS_ADDRESS_SHIFT);
2048 phy_data |= HV_SMB_ADDR_PEC_EN | HV_SMB_ADDR_VALID;
2049
2050 if (hw->phy.type == e1000_phy_i217) {
2051 /* Restore SMBus frequency */
2052 if (freq--) {
2053 phy_data &= ~HV_SMB_ADDR_FREQ_MASK;
2054 phy_data |= (freq & (1 << 0)) <<
2055 HV_SMB_ADDR_FREQ_LOW_SHIFT;
2056 phy_data |= (freq & (1 << 1)) <<
2057 (HV_SMB_ADDR_FREQ_HIGH_SHIFT - 1);
2058 } else {
2059 DEBUGOUT("Unsupported SMB frequency in PHY\n");
2060 }
2061 }
2062
2063 return e1000_write_phy_reg_hv_locked(hw, HV_SMB_ADDR, phy_data);
2064 }
2065
2066 /**
2067 * e1000_sw_lcd_config_ich8lan - SW-based LCD Configuration
2068 * @hw: pointer to the HW structure
2069 *
2070 * SW should configure the LCD from the NVM extended configuration region
2071 * as a workaround for certain parts.
2072 **/
2073 static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw)
2074 {
2075 struct e1000_phy_info *phy = &hw->phy;
2076 u32 i, data, cnf_size, cnf_base_addr, sw_cfg_mask;
2077 s32 ret_val = E1000_SUCCESS;
2078 u16 word_addr, reg_data, reg_addr, phy_page = 0;
2079
2080 DEBUGFUNC("e1000_sw_lcd_config_ich8lan");
2081
2082 /* Initialize the PHY from the NVM on ICH platforms. This
2083 * is needed due to an issue where the NVM configuration is
2084 * not properly autoloaded after power transitions.
2085 * Therefore, after each PHY reset, we will load the
2086 * configuration data out of the NVM manually.
2087 */
2088 switch (hw->mac.type) {
2089 case e1000_ich8lan:
2090 if (phy->type != e1000_phy_igp_3)
2091 return ret_val;
2092
2093 if ((hw->device_id == E1000_DEV_ID_ICH8_IGP_AMT) ||
2094 (hw->device_id == E1000_DEV_ID_ICH8_IGP_C)) {
2095 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG;
2096 break;
2097 }
2098 /* Fall-thru */
2099 case e1000_pchlan:
2100 case e1000_pch2lan:
2101 case e1000_pch_lpt:
2102 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG_ICH8M;
2103 break;
2104 default:
2105 return ret_val;
2106 }
2107
2108 ret_val = hw->phy.ops.acquire(hw);
2109 if (ret_val)
2110 return ret_val;
2111
2112 data = E1000_READ_REG(hw, E1000_FEXTNVM);
2113 if (!(data & sw_cfg_mask))
2114 goto release;
2115
2116 /* Make sure HW does not configure LCD from PHY
2117 * extended configuration before SW configuration
2118 */
2119 data = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
2120 if ((hw->mac.type < e1000_pch2lan) &&
2121 (data & E1000_EXTCNF_CTRL_LCD_WRITE_ENABLE))
2122 goto release;
2123
2124 cnf_size = E1000_READ_REG(hw, E1000_EXTCNF_SIZE);
2125 cnf_size &= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_MASK;
2126 cnf_size >>= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_SHIFT;
2127 if (!cnf_size)
2128 goto release;
2129
2130 cnf_base_addr = data & E1000_EXTCNF_CTRL_EXT_CNF_POINTER_MASK;
2131 cnf_base_addr >>= E1000_EXTCNF_CTRL_EXT_CNF_POINTER_SHIFT;
2132
2133 if (((hw->mac.type == e1000_pchlan) &&
2134 !(data & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)) ||
2135 (hw->mac.type > e1000_pchlan)) {
2136 /* HW configures the SMBus address and LEDs when the
2137 * OEM and LCD Write Enable bits are set in the NVM.
2138 * When both NVM bits are cleared, SW will configure
2139 * them instead.
2140 */
2141 ret_val = e1000_write_smbus_addr(hw);
2142 if (ret_val)
2143 goto release;
2144
2145 data = E1000_READ_REG(hw, E1000_LEDCTL);
2146 ret_val = e1000_write_phy_reg_hv_locked(hw, HV_LED_CONFIG,
2147 (u16)data);
2148 if (ret_val)
2149 goto release;
2150 }
2151
2152 /* Configure LCD from extended configuration region. */
2153
2154 /* cnf_base_addr is in DWORD */
2155 word_addr = (u16)(cnf_base_addr << 1);
2156
2157 for (i = 0; i < cnf_size; i++) {
2158 ret_val = hw->nvm.ops.read(hw, (word_addr + i * 2), 1,
2159 &reg_data);
2160 if (ret_val)
2161 goto release;
2162
2163 ret_val = hw->nvm.ops.read(hw, (word_addr + i * 2 + 1),
2164 1, &reg_addr);
2165 if (ret_val)
2166 goto release;
2167
2168 /* Save off the PHY page for future writes. */
2169 if (reg_addr == IGP01E1000_PHY_PAGE_SELECT) {
2170 phy_page = reg_data;
2171 continue;
2172 }
2173
2174 reg_addr &= PHY_REG_MASK;
2175 reg_addr |= phy_page;
2176
2177 ret_val = phy->ops.write_reg_locked(hw, (u32)reg_addr,
2178 reg_data);
2179 if (ret_val)
2180 goto release;
2181 }
2182
2183 release:
2184 hw->phy.ops.release(hw);
2185 return ret_val;
2186 }
2187
2188 /**
2189 * e1000_k1_gig_workaround_hv - K1 Si workaround
2190 * @hw: pointer to the HW structure
2191 * @link: link up bool flag
2192 *
2193 * If K1 is enabled for 1Gbps, the MAC might stall when transitioning
2194 * from a lower speed. This workaround disables K1 whenever link is at 1Gig
2195 * If link is down, the function will restore the default K1 setting located
2196 * in the NVM.
2197 **/
2198 static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link)
2199 {
2200 s32 ret_val = E1000_SUCCESS;
2201 u16 status_reg = 0;
2202 bool k1_enable = hw->dev_spec.ich8lan.nvm_k1_enabled;
2203
2204 DEBUGFUNC("e1000_k1_gig_workaround_hv");
2205
2206 if (hw->mac.type != e1000_pchlan)
2207 return E1000_SUCCESS;
2208
2209 /* Wrap the whole flow with the sw flag */
2210 ret_val = hw->phy.ops.acquire(hw);
2211 if (ret_val)
2212 return ret_val;
2213
2214 /* Disable K1 when link is 1Gbps, otherwise use the NVM setting */
2215 if (link) {
2216 if (hw->phy.type == e1000_phy_82578) {
2217 ret_val = hw->phy.ops.read_reg_locked(hw, BM_CS_STATUS,
2218 &status_reg);
2219 if (ret_val)
2220 goto release;
2221
2222 status_reg &= (BM_CS_STATUS_LINK_UP |
2223 BM_CS_STATUS_RESOLVED |
2224 BM_CS_STATUS_SPEED_MASK);
2225
2226 if (status_reg == (BM_CS_STATUS_LINK_UP |
2227 BM_CS_STATUS_RESOLVED |
2228 BM_CS_STATUS_SPEED_1000))
2229 k1_enable = FALSE;
2230 }
2231
2232 if (hw->phy.type == e1000_phy_82577) {
2233 ret_val = hw->phy.ops.read_reg_locked(hw, HV_M_STATUS,
2234 &status_reg);
2235 if (ret_val)
2236 goto release;
2237
2238 status_reg &= (HV_M_STATUS_LINK_UP |
2239 HV_M_STATUS_AUTONEG_COMPLETE |
2240 HV_M_STATUS_SPEED_MASK);
2241
2242 if (status_reg == (HV_M_STATUS_LINK_UP |
2243 HV_M_STATUS_AUTONEG_COMPLETE |
2244 HV_M_STATUS_SPEED_1000))
2245 k1_enable = FALSE;
2246 }
2247
2248 /* Link stall fix for link up */
2249 ret_val = hw->phy.ops.write_reg_locked(hw, PHY_REG(770, 19),
2250 0x0100);
2251 if (ret_val)
2252 goto release;
2253
2254 } else {
2255 /* Link stall fix for link down */
2256 ret_val = hw->phy.ops.write_reg_locked(hw, PHY_REG(770, 19),
2257 0x4100);
2258 if (ret_val)
2259 goto release;
2260 }
2261
2262 ret_val = e1000_configure_k1_ich8lan(hw, k1_enable);
2263
2264 release:
2265 hw->phy.ops.release(hw);
2266
2267 return ret_val;
2268 }
2269
2270 /**
2271 * e1000_configure_k1_ich8lan - Configure K1 power state
2272 * @hw: pointer to the HW structure
2273 * @enable: K1 state to configure
2274 *
2275 * Configure the K1 power state based on the provided parameter.
2276 * Assumes semaphore already acquired.
2277 *
2278 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
2279 **/
2280 s32 e1000_configure_k1_ich8lan(struct e1000_hw *hw, bool k1_enable)
2281 {
2282 s32 ret_val;
2283 u32 ctrl_reg = 0;
2284 u32 ctrl_ext = 0;
2285 u32 reg = 0;
2286 u16 kmrn_reg = 0;
2287
2288 DEBUGFUNC("e1000_configure_k1_ich8lan");
2289
2290 ret_val = e1000_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
2291 &kmrn_reg);
2292 if (ret_val)
2293 return ret_val;
2294
2295 if (k1_enable)
2296 kmrn_reg |= E1000_KMRNCTRLSTA_K1_ENABLE;
2297 else
2298 kmrn_reg &= ~E1000_KMRNCTRLSTA_K1_ENABLE;
2299
2300 ret_val = e1000_write_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
2301 kmrn_reg);
2302 if (ret_val)
2303 return ret_val;
2304
2305 usec_delay(20);
2306 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
2307 ctrl_reg = E1000_READ_REG(hw, E1000_CTRL);
2308
2309 reg = ctrl_reg & ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
2310 reg |= E1000_CTRL_FRCSPD;
2311 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2312
2313 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_SPD_BYPS);
2314 E1000_WRITE_FLUSH(hw);
2315 usec_delay(20);
2316 E1000_WRITE_REG(hw, E1000_CTRL, ctrl_reg);
2317 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
2318 E1000_WRITE_FLUSH(hw);
2319 usec_delay(20);
2320
2321 return E1000_SUCCESS;
2322 }
2323
2324 /**
2325 * e1000_oem_bits_config_ich8lan - SW-based LCD Configuration
2326 * @hw: pointer to the HW structure
2327 * @d0_state: boolean if entering d0 or d3 device state
2328 *
2329 * SW will configure Gbe Disable and LPLU based on the NVM. The four bits are
2330 * collectively called OEM bits. The OEM Write Enable bit and SW Config bit
2331 * in NVM determines whether HW should configure LPLU and Gbe Disable.
2332 **/
2333 static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state)
2334 {
2335 s32 ret_val = 0;
2336 u32 mac_reg;
2337 u16 oem_reg;
2338
2339 DEBUGFUNC("e1000_oem_bits_config_ich8lan");
2340
2341 if (hw->mac.type < e1000_pchlan)
2342 return ret_val;
2343
2344 ret_val = hw->phy.ops.acquire(hw);
2345 if (ret_val)
2346 return ret_val;
2347
2348 if (hw->mac.type == e1000_pchlan) {
2349 mac_reg = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
2350 if (mac_reg & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)
2351 goto release;
2352 }
2353
2354 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM);
2355 if (!(mac_reg & E1000_FEXTNVM_SW_CONFIG_ICH8M))
2356 goto release;
2357
2358 mac_reg = E1000_READ_REG(hw, E1000_PHY_CTRL);
2359
2360 ret_val = hw->phy.ops.read_reg_locked(hw, HV_OEM_BITS, &oem_reg);
2361 if (ret_val)
2362 goto release;
2363
2364 oem_reg &= ~(HV_OEM_BITS_GBE_DIS | HV_OEM_BITS_LPLU);
2365
2366 if (d0_state) {
2367 if (mac_reg & E1000_PHY_CTRL_GBE_DISABLE)
2368 oem_reg |= HV_OEM_BITS_GBE_DIS;
2369
2370 if (mac_reg & E1000_PHY_CTRL_D0A_LPLU)
2371 oem_reg |= HV_OEM_BITS_LPLU;
2372 } else {
2373 if (mac_reg & (E1000_PHY_CTRL_GBE_DISABLE |
2374 E1000_PHY_CTRL_NOND0A_GBE_DISABLE))
2375 oem_reg |= HV_OEM_BITS_GBE_DIS;
2376
2377 if (mac_reg & (E1000_PHY_CTRL_D0A_LPLU |
2378 E1000_PHY_CTRL_NOND0A_LPLU))
2379 oem_reg |= HV_OEM_BITS_LPLU;
2380 }
2381
2382 /* Set Restart auto-neg to activate the bits */
2383 if ((d0_state || (hw->mac.type != e1000_pchlan)) &&
2384 !hw->phy.ops.check_reset_block(hw))
2385 oem_reg |= HV_OEM_BITS_RESTART_AN;
2386
2387 ret_val = hw->phy.ops.write_reg_locked(hw, HV_OEM_BITS, oem_reg);
2388
2389 release:
2390 hw->phy.ops.release(hw);
2391
2392 return ret_val;
2393 }
2394
2395
2396 /**
2397 * e1000_set_mdio_slow_mode_hv - Set slow MDIO access mode
2398 * @hw: pointer to the HW structure
2399 **/
2400 static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw)
2401 {
2402 s32 ret_val;
2403 u16 data;
2404
2405 DEBUGFUNC("e1000_set_mdio_slow_mode_hv");
2406
2407 ret_val = hw->phy.ops.read_reg(hw, HV_KMRN_MODE_CTRL, &data);
2408 if (ret_val)
2409 return ret_val;
2410
2411 data |= HV_KMRN_MDIO_SLOW;
2412
2413 ret_val = hw->phy.ops.write_reg(hw, HV_KMRN_MODE_CTRL, data);
2414
2415 return ret_val;
2416 }
2417
2418 /**
2419 * e1000_hv_phy_workarounds_ich8lan - A series of Phy workarounds to be
2420 * done after every PHY reset.
2421 **/
2422 static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw)
2423 {
2424 s32 ret_val = E1000_SUCCESS;
2425 u16 phy_data;
2426
2427 DEBUGFUNC("e1000_hv_phy_workarounds_ich8lan");
2428
2429 if (hw->mac.type != e1000_pchlan)
2430 return E1000_SUCCESS;
2431
2432 /* Set MDIO slow mode before any other MDIO access */
2433 if (hw->phy.type == e1000_phy_82577) {
2434 ret_val = e1000_set_mdio_slow_mode_hv(hw);
2435 if (ret_val)
2436 return ret_val;
2437 }
2438
2439 if (((hw->phy.type == e1000_phy_82577) &&
2440 ((hw->phy.revision == 1) || (hw->phy.revision == 2))) ||
2441 ((hw->phy.type == e1000_phy_82578) && (hw->phy.revision == 1))) {
2442 /* Disable generation of early preamble */
2443 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 25), 0x4431);
2444 if (ret_val)
2445 return ret_val;
2446
2447 /* Preamble tuning for SSC */
2448 ret_val = hw->phy.ops.write_reg(hw, HV_KMRN_FIFO_CTRLSTA,
2449 0xA204);
2450 if (ret_val)
2451 return ret_val;
2452 }
2453
2454 if (hw->phy.type == e1000_phy_82578) {
2455 /* Return registers to default by doing a soft reset then
2456 * writing 0x3140 to the control register.
2457 */
2458 if (hw->phy.revision < 2) {
2459 e1000_phy_sw_reset_generic(hw);
2460 ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL,
2461 0x3140);
2462 }
2463 }
2464
2465 /* Select page 0 */
2466 ret_val = hw->phy.ops.acquire(hw);
2467 if (ret_val)
2468 return ret_val;
2469
2470 hw->phy.addr = 1;
2471 ret_val = e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 0);
2472 hw->phy.ops.release(hw);
2473 if (ret_val)
2474 return ret_val;
2475
2476 /* Configure the K1 Si workaround during phy reset assuming there is
2477 * link so that it disables K1 if link is in 1Gbps.
2478 */
2479 ret_val = e1000_k1_gig_workaround_hv(hw, TRUE);
2480 if (ret_val)
2481 return ret_val;
2482
2483 /* Workaround for link disconnects on a busy hub in half duplex */
2484 ret_val = hw->phy.ops.acquire(hw);
2485 if (ret_val)
2486 return ret_val;
2487 ret_val = hw->phy.ops.read_reg_locked(hw, BM_PORT_GEN_CFG, &phy_data);
2488 if (ret_val)
2489 goto release;
2490 ret_val = hw->phy.ops.write_reg_locked(hw, BM_PORT_GEN_CFG,
2491 phy_data & 0x00FF);
2492 if (ret_val)
2493 goto release;
2494
2495 /* set MSE higher to enable link to stay up when noise is high */
2496 ret_val = e1000_write_emi_reg_locked(hw, I82577_MSE_THRESHOLD, 0x0034);
2497 release:
2498 hw->phy.ops.release(hw);
2499
2500 return ret_val;
2501 }
2502
2503 /**
2504 * e1000_copy_rx_addrs_to_phy_ich8lan - Copy Rx addresses from MAC to PHY
2505 * @hw: pointer to the HW structure
2506 **/
2507 void e1000_copy_rx_addrs_to_phy_ich8lan(struct e1000_hw *hw)
2508 {
2509 u32 mac_reg;
2510 u16 i, phy_reg = 0;
2511 s32 ret_val;
2512
2513 DEBUGFUNC("e1000_copy_rx_addrs_to_phy_ich8lan");
2514
2515 ret_val = hw->phy.ops.acquire(hw);
2516 if (ret_val)
2517 return;
2518 ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
2519 if (ret_val)
2520 goto release;
2521
2522 /* Copy both RAL/H (rar_entry_count) and SHRAL/H to PHY */
2523 for (i = 0; i < (hw->mac.rar_entry_count); i++) {
2524 mac_reg = E1000_READ_REG(hw, E1000_RAL(i));
2525 hw->phy.ops.write_reg_page(hw, BM_RAR_L(i),
2526 (u16)(mac_reg & 0xFFFF));
2527 hw->phy.ops.write_reg_page(hw, BM_RAR_M(i),
2528 (u16)((mac_reg >> 16) & 0xFFFF));
2529
2530 mac_reg = E1000_READ_REG(hw, E1000_RAH(i));
2531 hw->phy.ops.write_reg_page(hw, BM_RAR_H(i),
2532 (u16)(mac_reg & 0xFFFF));
2533 hw->phy.ops.write_reg_page(hw, BM_RAR_CTRL(i),
2534 (u16)((mac_reg & E1000_RAH_AV)
2535 >> 16));
2536 }
2537
2538 e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
2539
2540 release:
2541 hw->phy.ops.release(hw);
2542 }
2543
2544 static u32 e1000_calc_rx_da_crc(u8 mac[])
2545 {
2546 u32 poly = 0xEDB88320; /* Polynomial for 802.3 CRC calculation */
2547 u32 i, j, mask, crc;
2548
2549 DEBUGFUNC("e1000_calc_rx_da_crc");
2550
2551 crc = 0xffffffff;
2552 for (i = 0; i < 6; i++) {
2553 crc = crc ^ mac[i];
2554 for (j = 8; j > 0; j--) {
2555 mask = (crc & 1) * (-1);
2556 crc = (crc >> 1) ^ (poly & mask);
2557 }
2558 }
2559 return ~crc;
2560 }
2561
2562 /**
2563 * e1000_lv_jumbo_workaround_ich8lan - required for jumbo frame operation
2564 * with 82579 PHY
2565 * @hw: pointer to the HW structure
2566 * @enable: flag to enable/disable workaround when enabling/disabling jumbos
2567 **/
2568 s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable)
2569 {
2570 s32 ret_val = E1000_SUCCESS;
2571 u16 phy_reg, data;
2572 u32 mac_reg;
2573 u16 i;
2574
2575 DEBUGFUNC("e1000_lv_jumbo_workaround_ich8lan");
2576
2577 if (hw->mac.type < e1000_pch2lan)
2578 return E1000_SUCCESS;
2579
2580 /* disable Rx path while enabling/disabling workaround */
2581 hw->phy.ops.read_reg(hw, PHY_REG(769, 20), &phy_reg);
2582 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 20),
2583 phy_reg | (1 << 14));
2584 if (ret_val)
2585 return ret_val;
2586
2587 if (enable) {
2588 /* Write Rx addresses (rar_entry_count for RAL/H, and
2589 * SHRAL/H) and initial CRC values to the MAC
2590 */
2591 for (i = 0; i < hw->mac.rar_entry_count; i++) {
2592 u8 mac_addr[ETH_ADDR_LEN] = {0};
2593 u32 addr_high, addr_low;
2594
2595 addr_high = E1000_READ_REG(hw, E1000_RAH(i));
2596 if (!(addr_high & E1000_RAH_AV))
2597 continue;
2598 addr_low = E1000_READ_REG(hw, E1000_RAL(i));
2599 mac_addr[0] = (addr_low & 0xFF);
2600 mac_addr[1] = ((addr_low >> 8) & 0xFF);
2601 mac_addr[2] = ((addr_low >> 16) & 0xFF);
2602 mac_addr[3] = ((addr_low >> 24) & 0xFF);
2603 mac_addr[4] = (addr_high & 0xFF);
2604 mac_addr[5] = ((addr_high >> 8) & 0xFF);
2605
2606 E1000_WRITE_REG(hw, E1000_PCH_RAICC(i),
2607 e1000_calc_rx_da_crc(mac_addr));
2608 }
2609
2610 /* Write Rx addresses to the PHY */
2611 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
2612
2613 /* Enable jumbo frame workaround in the MAC */
2614 mac_reg = E1000_READ_REG(hw, E1000_FFLT_DBG);
2615 mac_reg &= ~(1 << 14);
2616 mac_reg |= (7 << 15);
2617 E1000_WRITE_REG(hw, E1000_FFLT_DBG, mac_reg);
2618
2619 mac_reg = E1000_READ_REG(hw, E1000_RCTL);
2620 mac_reg |= E1000_RCTL_SECRC;
2621 E1000_WRITE_REG(hw, E1000_RCTL, mac_reg);
2622
2623 ret_val = e1000_read_kmrn_reg_generic(hw,
2624 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2625 &data);
2626 if (ret_val)
2627 return ret_val;
2628 ret_val = e1000_write_kmrn_reg_generic(hw,
2629 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2630 data | (1 << 0));
2631 if (ret_val)
2632 return ret_val;
2633 ret_val = e1000_read_kmrn_reg_generic(hw,
2634 E1000_KMRNCTRLSTA_HD_CTRL,
2635 &data);
2636 if (ret_val)
2637 return ret_val;
2638 data &= ~(0xF << 8);
2639 data |= (0xB << 8);
2640 ret_val = e1000_write_kmrn_reg_generic(hw,
2641 E1000_KMRNCTRLSTA_HD_CTRL,
2642 data);
2643 if (ret_val)
2644 return ret_val;
2645
2646 /* Enable jumbo frame workaround in the PHY */
2647 hw->phy.ops.read_reg(hw, PHY_REG(769, 23), &data);
2648 data &= ~(0x7F << 5);
2649 data |= (0x37 << 5);
2650 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 23), data);
2651 if (ret_val)
2652 return ret_val;
2653 hw->phy.ops.read_reg(hw, PHY_REG(769, 16), &data);
2654 data &= ~(1 << 13);
2655 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 16), data);
2656 if (ret_val)
2657 return ret_val;
2658 hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data);
2659 data &= ~(0x3FF << 2);
2660 data |= (E1000_TX_PTR_GAP << 2);
2661 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data);
2662 if (ret_val)
2663 return ret_val;
2664 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 23), 0xF100);
2665 if (ret_val)
2666 return ret_val;
2667 hw->phy.ops.read_reg(hw, HV_PM_CTRL, &data);
2668 ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL, data |
2669 (1 << 10));
2670 if (ret_val)
2671 return ret_val;
2672 } else {
2673 /* Write MAC register values back to h/w defaults */
2674 mac_reg = E1000_READ_REG(hw, E1000_FFLT_DBG);
2675 mac_reg &= ~(0xF << 14);
2676 E1000_WRITE_REG(hw, E1000_FFLT_DBG, mac_reg);
2677
2678 mac_reg = E1000_READ_REG(hw, E1000_RCTL);
2679 mac_reg &= ~E1000_RCTL_SECRC;
2680 E1000_WRITE_REG(hw, E1000_RCTL, mac_reg);
2681
2682 ret_val = e1000_read_kmrn_reg_generic(hw,
2683 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2684 &data);
2685 if (ret_val)
2686 return ret_val;
2687 ret_val = e1000_write_kmrn_reg_generic(hw,
2688 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2689 data & ~(1 << 0));
2690 if (ret_val)
2691 return ret_val;
2692 ret_val = e1000_read_kmrn_reg_generic(hw,
2693 E1000_KMRNCTRLSTA_HD_CTRL,
2694 &data);
2695 if (ret_val)
2696 return ret_val;
2697 data &= ~(0xF << 8);
2698 data |= (0xB << 8);
2699 ret_val = e1000_write_kmrn_reg_generic(hw,
2700 E1000_KMRNCTRLSTA_HD_CTRL,
2701 data);
2702 if (ret_val)
2703 return ret_val;
2704
2705 /* Write PHY register values back to h/w defaults */
2706 hw->phy.ops.read_reg(hw, PHY_REG(769, 23), &data);
2707 data &= ~(0x7F << 5);
2708 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 23), data);
2709 if (ret_val)
2710 return ret_val;
2711 hw->phy.ops.read_reg(hw, PHY_REG(769, 16), &data);
2712 data |= (1 << 13);
2713 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 16), data);
2714 if (ret_val)
2715 return ret_val;
2716 hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data);
2717 data &= ~(0x3FF << 2);
2718 data |= (0x8 << 2);
2719 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data);
2720 if (ret_val)
2721 return ret_val;
2722 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 23), 0x7E00);
2723 if (ret_val)
2724 return ret_val;
2725 hw->phy.ops.read_reg(hw, HV_PM_CTRL, &data);
2726 ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL, data &
2727 ~(1 << 10));
2728 if (ret_val)
2729 return ret_val;
2730 }
2731
2732 /* re-enable Rx path after enabling/disabling workaround */
2733 return hw->phy.ops.write_reg(hw, PHY_REG(769, 20), phy_reg &
2734 ~(1 << 14));
2735 }
2736
2737 /**
2738 * e1000_lv_phy_workarounds_ich8lan - A series of Phy workarounds to be
2739 * done after every PHY reset.
2740 **/
2741 static s32 e1000_lv_phy_workarounds_ich8lan(struct e1000_hw *hw)
2742 {
2743 s32 ret_val = E1000_SUCCESS;
2744
2745 DEBUGFUNC("e1000_lv_phy_workarounds_ich8lan");
2746
2747 if (hw->mac.type != e1000_pch2lan)
2748 return E1000_SUCCESS;
2749
2750 /* Set MDIO slow mode before any other MDIO access */
2751 ret_val = e1000_set_mdio_slow_mode_hv(hw);
2752 if (ret_val)
2753 return ret_val;
2754
2755 ret_val = hw->phy.ops.acquire(hw);
2756 if (ret_val)
2757 return ret_val;
2758 /* set MSE higher to enable link to stay up when noise is high */
2759 ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_THRESHOLD, 0x0034);
2760 if (ret_val)
2761 goto release;
2762 /* drop link after 5 times MSE threshold was reached */
2763 ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_LINK_DOWN, 0x0005);
2764 release:
2765 hw->phy.ops.release(hw);
2766
2767 return ret_val;
2768 }
2769
2770 /**
2771 * e1000_k1_gig_workaround_lv - K1 Si workaround
2772 * @hw: pointer to the HW structure
2773 *
2774 * Workaround to set the K1 beacon duration for 82579 parts in 10Mbps
2775 * Disable K1 for 1000 and 100 speeds
2776 **/
2777 static s32 e1000_k1_workaround_lv(struct e1000_hw *hw)
2778 {
2779 s32 ret_val = E1000_SUCCESS;
2780 u16 status_reg = 0;
2781
2782 DEBUGFUNC("e1000_k1_workaround_lv");
2783
2784 if (hw->mac.type != e1000_pch2lan)
2785 return E1000_SUCCESS;
2786
2787 /* Set K1 beacon duration based on 10Mbs speed */
2788 ret_val = hw->phy.ops.read_reg(hw, HV_M_STATUS, &status_reg);
2789 if (ret_val)
2790 return ret_val;
2791
2792 if ((status_reg & (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE))
2793 == (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE)) {
2794 if (status_reg &
2795 (HV_M_STATUS_SPEED_1000 | HV_M_STATUS_SPEED_100)) {
2796 u16 pm_phy_reg;
2797
2798 /* LV 1G/100 Packet drop issue wa */
2799 ret_val = hw->phy.ops.read_reg(hw, HV_PM_CTRL,
2800 &pm_phy_reg);
2801 if (ret_val)
2802 return ret_val;
2803 pm_phy_reg &= ~HV_PM_CTRL_K1_ENABLE;
2804 ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL,
2805 pm_phy_reg);
2806 if (ret_val)
2807 return ret_val;
2808 } else {
2809 u32 mac_reg;
2810 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM4);
2811 mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
2812 mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
2813 E1000_WRITE_REG(hw, E1000_FEXTNVM4, mac_reg);
2814 }
2815 }
2816
2817 return ret_val;
2818 }
2819
2820 /**
2821 * e1000_gate_hw_phy_config_ich8lan - disable PHY config via hardware
2822 * @hw: pointer to the HW structure
2823 * @gate: boolean set to TRUE to gate, FALSE to ungate
2824 *
2825 * Gate/ungate the automatic PHY configuration via hardware; perform
2826 * the configuration via software instead.
2827 **/
2828 static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate)
2829 {
2830 u32 extcnf_ctrl;
2831
2832 DEBUGFUNC("e1000_gate_hw_phy_config_ich8lan");
2833
2834 if (hw->mac.type < e1000_pch2lan)
2835 return;
2836
2837 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
2838
2839 if (gate)
2840 extcnf_ctrl |= E1000_EXTCNF_CTRL_GATE_PHY_CFG;
2841 else
2842 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_GATE_PHY_CFG;
2843
2844 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
2845 }
2846
2847 /**
2848 * e1000_lan_init_done_ich8lan - Check for PHY config completion
2849 * @hw: pointer to the HW structure
2850 *
2851 * Check the appropriate indication the MAC has finished configuring the
2852 * PHY after a software reset.
2853 **/
2854 static void e1000_lan_init_done_ich8lan(struct e1000_hw *hw)
2855 {
2856 u32 data, loop = E1000_ICH8_LAN_INIT_TIMEOUT;
2857
2858 DEBUGFUNC("e1000_lan_init_done_ich8lan");
2859
2860 /* Wait for basic configuration completes before proceeding */
2861 do {
2862 data = E1000_READ_REG(hw, E1000_STATUS);
2863 data &= E1000_STATUS_LAN_INIT_DONE;
2864 usec_delay(100);
2865 } while ((!data) && --loop);
2866
2867 /* If basic configuration is incomplete before the above loop
2868 * count reaches 0, loading the configuration from NVM will
2869 * leave the PHY in a bad state possibly resulting in no link.
2870 */
2871 if (loop == 0)
2872 DEBUGOUT("LAN_INIT_DONE not set, increase timeout\n");
2873
2874 /* Clear the Init Done bit for the next init event */
2875 data = E1000_READ_REG(hw, E1000_STATUS);
2876 data &= ~E1000_STATUS_LAN_INIT_DONE;
2877 E1000_WRITE_REG(hw, E1000_STATUS, data);
2878 }
2879
2880 /**
2881 * e1000_post_phy_reset_ich8lan - Perform steps required after a PHY reset
2882 * @hw: pointer to the HW structure
2883 **/
2884 static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
2885 {
2886 s32 ret_val = E1000_SUCCESS;
2887 u16 reg;
2888
2889 DEBUGFUNC("e1000_post_phy_reset_ich8lan");
2890
2891 if (hw->phy.ops.check_reset_block(hw))
2892 return E1000_SUCCESS;
2893
2894 /* Allow time for h/w to get to quiescent state after reset */
2895 msec_delay(10);
2896
2897 /* Perform any necessary post-reset workarounds */
2898 switch (hw->mac.type) {
2899 case e1000_pchlan:
2900 ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
2901 if (ret_val)
2902 return ret_val;
2903 break;
2904 case e1000_pch2lan:
2905 ret_val = e1000_lv_phy_workarounds_ich8lan(hw);
2906 if (ret_val)
2907 return ret_val;
2908 break;
2909 default:
2910 break;
2911 }
2912
2913 /* Clear the host wakeup bit after lcd reset */
2914 if (hw->mac.type >= e1000_pchlan) {
2915 hw->phy.ops.read_reg(hw, BM_PORT_GEN_CFG, &reg);
2916 reg &= ~BM_WUC_HOST_WU_BIT;
2917 hw->phy.ops.write_reg(hw, BM_PORT_GEN_CFG, reg);
2918 }
2919
2920 /* Configure the LCD with the extended configuration region in NVM */
2921 ret_val = e1000_sw_lcd_config_ich8lan(hw);
2922 if (ret_val)
2923 return ret_val;
2924
2925 /* Configure the LCD with the OEM bits in NVM */
2926 ret_val = e1000_oem_bits_config_ich8lan(hw, TRUE);
2927
2928 if (hw->mac.type == e1000_pch2lan) {
2929 /* Ungate automatic PHY configuration on non-managed 82579 */
2930 if (!(E1000_READ_REG(hw, E1000_FWSM) &
2931 E1000_ICH_FWSM_FW_VALID)) {
2932 msec_delay(10);
2933 e1000_gate_hw_phy_config_ich8lan(hw, FALSE);
2934 }
2935
2936 /* Set EEE LPI Update Timer to 200usec */
2937 ret_val = hw->phy.ops.acquire(hw);
2938 if (ret_val)
2939 return ret_val;
2940 ret_val = e1000_write_emi_reg_locked(hw,
2941 I82579_LPI_UPDATE_TIMER,
2942 0x1387);
2943 hw->phy.ops.release(hw);
2944 }
2945
2946 return ret_val;
2947 }
2948
2949 /**
2950 * e1000_phy_hw_reset_ich8lan - Performs a PHY reset
2951 * @hw: pointer to the HW structure
2952 *
2953 * Resets the PHY
2954 * This is a function pointer entry point called by drivers
2955 * or other shared routines.
2956 **/
2957 static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw)
2958 {
2959 s32 ret_val = E1000_SUCCESS;
2960
2961 DEBUGFUNC("e1000_phy_hw_reset_ich8lan");
2962
2963 /* Gate automatic PHY configuration by hardware on non-managed 82579 */
2964 if ((hw->mac.type == e1000_pch2lan) &&
2965 !(E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID))
2966 e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
2967
2968 ret_val = e1000_phy_hw_reset_generic(hw);
2969 if (ret_val)
2970 return ret_val;
2971
2972 return e1000_post_phy_reset_ich8lan(hw);
2973 }
2974
2975 /**
2976 * e1000_set_lplu_state_pchlan - Set Low Power Link Up state
2977 * @hw: pointer to the HW structure
2978 * @active: TRUE to enable LPLU, FALSE to disable
2979 *
2980 * Sets the LPLU state according to the active flag. For PCH, if OEM write
2981 * bit are disabled in the NVM, writing the LPLU bits in the MAC will not set
2982 * the phy speed. This function will manually set the LPLU bit and restart
2983 * auto-neg as hw would do. D3 and D0 LPLU will call the same function
2984 * since it configures the same bit.
2985 **/
2986 static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active)
2987 {
2988 s32 ret_val;
2989 u16 oem_reg;
2990
2991 DEBUGFUNC("e1000_set_lplu_state_pchlan");
2992
2993 ret_val = hw->phy.ops.read_reg(hw, HV_OEM_BITS, &oem_reg);
2994 if (ret_val)
2995 return ret_val;
2996
2997 if (active)
2998 oem_reg |= HV_OEM_BITS_LPLU;
2999 else
3000 oem_reg &= ~HV_OEM_BITS_LPLU;
3001
3002 if (!hw->phy.ops.check_reset_block(hw))
3003 oem_reg |= HV_OEM_BITS_RESTART_AN;
3004
3005 return hw->phy.ops.write_reg(hw, HV_OEM_BITS, oem_reg);
3006 }
3007
3008 /**
3009 * e1000_set_d0_lplu_state_ich8lan - Set Low Power Linkup D0 state
3010 * @hw: pointer to the HW structure
3011 * @active: TRUE to enable LPLU, FALSE to disable
3012 *
3013 * Sets the LPLU D0 state according to the active flag. When
3014 * activating LPLU this function also disables smart speed
3015 * and vice versa. LPLU will not be activated unless the
3016 * device autonegotiation advertisement meets standards of
3017 * either 10 or 10/100 or 10/100/1000 at all duplexes.
3018 * This is a function pointer entry point only called by
3019 * PHY setup routines.
3020 **/
3021 static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
3022 {
3023 struct e1000_phy_info *phy = &hw->phy;
3024 u32 phy_ctrl;
3025 s32 ret_val = E1000_SUCCESS;
3026 u16 data;
3027
3028 DEBUGFUNC("e1000_set_d0_lplu_state_ich8lan");
3029
3030 if (phy->type == e1000_phy_ife)
3031 return E1000_SUCCESS;
3032
3033 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
3034
3035 if (active) {
3036 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
3037 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3038
3039 if (phy->type != e1000_phy_igp_3)
3040 return E1000_SUCCESS;
3041
3042 /* Call gig speed drop workaround on LPLU before accessing
3043 * any PHY registers
3044 */
3045 if (hw->mac.type == e1000_ich8lan)
3046 e1000_gig_downshift_workaround_ich8lan(hw);
3047
3048 /* When LPLU is enabled, we should disable SmartSpeed */
3049 ret_val = phy->ops.read_reg(hw,
3050 IGP01E1000_PHY_PORT_CONFIG,
3051 &data);
3052 if (ret_val)
3053 return ret_val;
3054 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3055 ret_val = phy->ops.write_reg(hw,
3056 IGP01E1000_PHY_PORT_CONFIG,
3057 data);
3058 if (ret_val)
3059 return ret_val;
3060 } else {
3061 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
3062 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3063
3064 if (phy->type != e1000_phy_igp_3)
3065 return E1000_SUCCESS;
3066
3067 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
3068 * during Dx states where the power conservation is most
3069 * important. During driver activity we should enable
3070 * SmartSpeed, so performance is maintained.
3071 */
3072 if (phy->smart_speed == e1000_smart_speed_on) {
3073 ret_val = phy->ops.read_reg(hw,
3074 IGP01E1000_PHY_PORT_CONFIG,
3075 &data);
3076 if (ret_val)
3077 return ret_val;
3078
3079 data |= IGP01E1000_PSCFR_SMART_SPEED;
3080 ret_val = phy->ops.write_reg(hw,
3081 IGP01E1000_PHY_PORT_CONFIG,
3082 data);
3083 if (ret_val)
3084 return ret_val;
3085 } else if (phy->smart_speed == e1000_smart_speed_off) {
3086 ret_val = phy->ops.read_reg(hw,
3087 IGP01E1000_PHY_PORT_CONFIG,
3088 &data);
3089 if (ret_val)
3090 return ret_val;
3091
3092 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3093 ret_val = phy->ops.write_reg(hw,
3094 IGP01E1000_PHY_PORT_CONFIG,
3095 data);
3096 if (ret_val)
3097 return ret_val;
3098 }
3099 }
3100
3101 return E1000_SUCCESS;
3102 }
3103
3104 /**
3105 * e1000_set_d3_lplu_state_ich8lan - Set Low Power Linkup D3 state
3106 * @hw: pointer to the HW structure
3107 * @active: TRUE to enable LPLU, FALSE to disable
3108 *
3109 * Sets the LPLU D3 state according to the active flag. When
3110 * activating LPLU this function also disables smart speed
3111 * and vice versa. LPLU will not be activated unless the
3112 * device autonegotiation advertisement meets standards of
3113 * either 10 or 10/100 or 10/100/1000 at all duplexes.
3114 * This is a function pointer entry point only called by
3115 * PHY setup routines.
3116 **/
3117 static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
3118 {
3119 struct e1000_phy_info *phy = &hw->phy;
3120 u32 phy_ctrl;
3121 s32 ret_val = E1000_SUCCESS;
3122 u16 data;
3123
3124 DEBUGFUNC("e1000_set_d3_lplu_state_ich8lan");
3125
3126 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
3127
3128 if (!active) {
3129 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
3130 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3131
3132 if (phy->type != e1000_phy_igp_3)
3133 return E1000_SUCCESS;
3134
3135 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
3136 * during Dx states where the power conservation is most
3137 * important. During driver activity we should enable
3138 * SmartSpeed, so performance is maintained.
3139 */
3140 if (phy->smart_speed == e1000_smart_speed_on) {
3141 ret_val = phy->ops.read_reg(hw,
3142 IGP01E1000_PHY_PORT_CONFIG,
3143 &data);
3144 if (ret_val)
3145 return ret_val;
3146
3147 data |= IGP01E1000_PSCFR_SMART_SPEED;
3148 ret_val = phy->ops.write_reg(hw,
3149 IGP01E1000_PHY_PORT_CONFIG,
3150 data);
3151 if (ret_val)
3152 return ret_val;
3153 } else if (phy->smart_speed == e1000_smart_speed_off) {
3154 ret_val = phy->ops.read_reg(hw,
3155 IGP01E1000_PHY_PORT_CONFIG,
3156 &data);
3157 if (ret_val)
3158 return ret_val;
3159
3160 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3161 ret_val = phy->ops.write_reg(hw,
3162 IGP01E1000_PHY_PORT_CONFIG,
3163 data);
3164 if (ret_val)
3165 return ret_val;
3166 }
3167 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
3168 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
3169 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
3170 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
3171 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3172
3173 if (phy->type != e1000_phy_igp_3)
3174 return E1000_SUCCESS;
3175
3176 /* Call gig speed drop workaround on LPLU before accessing
3177 * any PHY registers
3178 */
3179 if (hw->mac.type == e1000_ich8lan)
3180 e1000_gig_downshift_workaround_ich8lan(hw);
3181
3182 /* When LPLU is enabled, we should disable SmartSpeed */
3183 ret_val = phy->ops.read_reg(hw,
3184 IGP01E1000_PHY_PORT_CONFIG,
3185 &data);
3186 if (ret_val)
3187 return ret_val;
3188
3189 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3190 ret_val = phy->ops.write_reg(hw,
3191 IGP01E1000_PHY_PORT_CONFIG,
3192 data);
3193 }
3194
3195 return ret_val;
3196 }
3197
3198 /**
3199 * e1000_valid_nvm_bank_detect_ich8lan - finds out the valid bank 0 or 1
3200 * @hw: pointer to the HW structure
3201 * @bank: pointer to the variable that returns the active bank
3202 *
3203 * Reads signature byte from the NVM using the flash access registers.
3204 * Word 0x13 bits 15:14 = 10b indicate a valid signature for that bank.
3205 **/
3206 static s32 e1000_valid_nvm_bank_detect_ich8lan(struct e1000_hw *hw, u32 *bank)
3207 {
3208 u32 eecd;
3209 struct e1000_nvm_info *nvm = &hw->nvm;
3210 u32 bank1_offset = nvm->flash_bank_size * sizeof(u16);
3211 u32 act_offset = E1000_ICH_NVM_SIG_WORD * 2 + 1;
3212 u8 sig_byte = 0;
3213 s32 ret_val;
3214
3215 DEBUGFUNC("e1000_valid_nvm_bank_detect_ich8lan");
3216
3217 switch (hw->mac.type) {
3218 case e1000_ich8lan:
3219 case e1000_ich9lan:
3220 eecd = E1000_READ_REG(hw, E1000_EECD);
3221 if ((eecd & E1000_EECD_SEC1VAL_VALID_MASK) ==
3222 E1000_EECD_SEC1VAL_VALID_MASK) {
3223 if (eecd & E1000_EECD_SEC1VAL)
3224 *bank = 1;
3225 else
3226 *bank = 0;
3227
3228 return E1000_SUCCESS;
3229 }
3230 DEBUGOUT("Unable to determine valid NVM bank via EEC - reading flash signature\n");
3231 /* fall-thru */
3232 default:
3233 /* set bank to 0 in case flash read fails */
3234 *bank = 0;
3235
3236 /* Check bank 0 */
3237 ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset,
3238 &sig_byte);
3239 if (ret_val)
3240 return ret_val;
3241 if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
3242 E1000_ICH_NVM_SIG_VALUE) {
3243 *bank = 0;
3244 return E1000_SUCCESS;
3245 }
3246
3247 /* Check bank 1 */
3248 ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset +
3249 bank1_offset,
3250 &sig_byte);
3251 if (ret_val)
3252 return ret_val;
3253 if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
3254 E1000_ICH_NVM_SIG_VALUE) {
3255 *bank = 1;
3256 return E1000_SUCCESS;
3257 }
3258
3259 DEBUGOUT("ERROR: No valid NVM bank present\n");
3260 return -E1000_ERR_NVM;
3261 }
3262 }
3263
3264 /**
3265 * e1000_read_nvm_ich8lan - Read word(s) from the NVM
3266 * @hw: pointer to the HW structure
3267 * @offset: The offset (in bytes) of the word(s) to read.
3268 * @words: Size of data to read in words
3269 * @data: Pointer to the word(s) to read at offset.
3270 *
3271 * Reads a word(s) from the NVM using the flash access registers.
3272 **/
3273 static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
3274 u16 *data)
3275 {
3276 struct e1000_nvm_info *nvm = &hw->nvm;
3277 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3278 u32 act_offset;
3279 s32 ret_val = E1000_SUCCESS;
3280 u32 bank = 0;
3281 u16 i, word;
3282
3283 DEBUGFUNC("e1000_read_nvm_ich8lan");
3284
3285 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
3286 (words == 0)) {
3287 DEBUGOUT("nvm parameter(s) out of bounds\n");
3288 ret_val = -E1000_ERR_NVM;
3289 goto out;
3290 }
3291
3292 nvm->ops.acquire(hw);
3293
3294 ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
3295 if (ret_val != E1000_SUCCESS) {
3296 DEBUGOUT("Could not detect valid bank, assuming bank 0\n");
3297 bank = 0;
3298 }
3299
3300 act_offset = (bank) ? nvm->flash_bank_size : 0;
3301 act_offset += offset;
3302
3303 ret_val = E1000_SUCCESS;
3304 for (i = 0; i < words; i++) {
3305 if (dev_spec->shadow_ram[offset+i].modified) {
3306 data[i] = dev_spec->shadow_ram[offset+i].value;
3307 } else {
3308 ret_val = e1000_read_flash_word_ich8lan(hw,
3309 act_offset + i,
3310 &word);
3311 if (ret_val)
3312 break;
3313 data[i] = word;
3314 }
3315 }
3316
3317 nvm->ops.release(hw);
3318
3319 out:
3320 if (ret_val)
3321 DEBUGOUT1("NVM read error: %d\n", ret_val);
3322
3323 return ret_val;
3324 }
3325
3326 /**
3327 * e1000_flash_cycle_init_ich8lan - Initialize flash
3328 * @hw: pointer to the HW structure
3329 *
3330 * This function does initial flash setup so that a new read/write/erase cycle
3331 * can be started.
3332 **/
3333 static s32 e1000_flash_cycle_init_ich8lan(struct e1000_hw *hw)
3334 {
3335 union ich8_hws_flash_status hsfsts;
3336 s32 ret_val = -E1000_ERR_NVM;
3337
3338 DEBUGFUNC("e1000_flash_cycle_init_ich8lan");
3339
3340 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3341
3342 /* Check if the flash descriptor is valid */
3343 if (!hsfsts.hsf_status.fldesvalid) {
3344 DEBUGOUT("Flash descriptor invalid. SW Sequencing must be used.\n");
3345 return -E1000_ERR_NVM;
3346 }
3347
3348 /* Clear FCERR and DAEL in hw status by writing 1 */
3349 hsfsts.hsf_status.flcerr = 1;
3350 hsfsts.hsf_status.dael = 1;
3351 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFSTS, hsfsts.regval);
3352
3353 /* Either we should have a hardware SPI cycle in progress
3354 * bit to check against, in order to start a new cycle or
3355 * FDONE bit should be changed in the hardware so that it
3356 * is 1 after hardware reset, which can then be used as an
3357 * indication whether a cycle is in progress or has been
3358 * completed.
3359 */
3360
3361 if (!hsfsts.hsf_status.flcinprog) {
3362 /* There is no cycle running at present,
3363 * so we can start a cycle.
3364 * Begin by setting Flash Cycle Done.
3365 */
3366 hsfsts.hsf_status.flcdone = 1;
3367 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFSTS, hsfsts.regval);
3368 ret_val = E1000_SUCCESS;
3369 } else {
3370 s32 i;
3371
3372 /* Otherwise poll for sometime so the current
3373 * cycle has a chance to end before giving up.
3374 */
3375 for (i = 0; i < ICH_FLASH_READ_COMMAND_TIMEOUT; i++) {
3376 hsfsts.regval = E1000_READ_FLASH_REG16(hw,
3377 ICH_FLASH_HSFSTS);
3378 if (!hsfsts.hsf_status.flcinprog) {
3379 ret_val = E1000_SUCCESS;
3380 break;
3381 }
3382 usec_delay(1);
3383 }
3384 if (ret_val == E1000_SUCCESS) {
3385 /* Successful in waiting for previous cycle to timeout,
3386 * now set the Flash Cycle Done.
3387 */
3388 hsfsts.hsf_status.flcdone = 1;
3389 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFSTS,
3390 hsfsts.regval);
3391 } else {
3392 DEBUGOUT("Flash controller busy, cannot get access\n");
3393 }
3394 }
3395
3396 return ret_val;
3397 }
3398
3399 /**
3400 * e1000_flash_cycle_ich8lan - Starts flash cycle (read/write/erase)
3401 * @hw: pointer to the HW structure
3402 * @timeout: maximum time to wait for completion
3403 *
3404 * This function starts a flash cycle and waits for its completion.
3405 **/
3406 static s32 e1000_flash_cycle_ich8lan(struct e1000_hw *hw, u32 timeout)
3407 {
3408 union ich8_hws_flash_ctrl hsflctl;
3409 union ich8_hws_flash_status hsfsts;
3410 u32 i = 0;
3411
3412 DEBUGFUNC("e1000_flash_cycle_ich8lan");
3413
3414 /* Start a cycle by writing 1 in Flash Cycle Go in Hw Flash Control */
3415 hsflctl.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
3416 hsflctl.hsf_ctrl.flcgo = 1;
3417
3418 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL, hsflctl.regval);
3419
3420 /* wait till FDONE bit is set to 1 */
3421 do {
3422 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3423 if (hsfsts.hsf_status.flcdone)
3424 break;
3425 usec_delay(1);
3426 } while (i++ < timeout);
3427
3428 if (hsfsts.hsf_status.flcdone && !hsfsts.hsf_status.flcerr)
3429 return E1000_SUCCESS;
3430
3431 return -E1000_ERR_NVM;
3432 }
3433
3434 /**
3435 * e1000_read_flash_word_ich8lan - Read word from flash
3436 * @hw: pointer to the HW structure
3437 * @offset: offset to data location
3438 * @data: pointer to the location for storing the data
3439 *
3440 * Reads the flash word at offset into data. Offset is converted
3441 * to bytes before read.
3442 **/
3443 static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw, u32 offset,
3444 u16 *data)
3445 {
3446 DEBUGFUNC("e1000_read_flash_word_ich8lan");
3447
3448 if (!data)
3449 return -E1000_ERR_NVM;
3450
3451 /* Must convert offset into bytes. */
3452 offset <<= 1;
3453
3454 return e1000_read_flash_data_ich8lan(hw, offset, 2, data);
3455 }
3456
3457 /**
3458 * e1000_read_flash_byte_ich8lan - Read byte from flash
3459 * @hw: pointer to the HW structure
3460 * @offset: The offset of the byte to read.
3461 * @data: Pointer to a byte to store the value read.
3462 *
3463 * Reads a single byte from the NVM using the flash access registers.
3464 **/
3465 static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
3466 u8 *data)
3467 {
3468 s32 ret_val;
3469 u16 word = 0;
3470
3471 ret_val = e1000_read_flash_data_ich8lan(hw, offset, 1, &word);
3472
3473 if (ret_val)
3474 return ret_val;
3475
3476 *data = (u8)word;
3477
3478 return E1000_SUCCESS;
3479 }
3480
3481 /**
3482 * e1000_read_flash_data_ich8lan - Read byte or word from NVM
3483 * @hw: pointer to the HW structure
3484 * @offset: The offset (in bytes) of the byte or word to read.
3485 * @size: Size of data to read, 1=byte 2=word
3486 * @data: Pointer to the word to store the value read.
3487 *
3488 * Reads a byte or word from the NVM using the flash access registers.
3489 **/
3490 static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
3491 u8 size, u16 *data)
3492 {
3493 union ich8_hws_flash_status hsfsts;
3494 union ich8_hws_flash_ctrl hsflctl;
3495 u32 flash_linear_addr;
3496 u32 flash_data = 0;
3497 s32 ret_val = -E1000_ERR_NVM;
3498 u8 count = 0;
3499
3500 DEBUGFUNC("e1000_read_flash_data_ich8lan");
3501
3502 if (size < 1 || size > 2 || offset > ICH_FLASH_LINEAR_ADDR_MASK)
3503 return -E1000_ERR_NVM;
3504 flash_linear_addr = ((ICH_FLASH_LINEAR_ADDR_MASK & offset) +
3505 hw->nvm.flash_base_addr);
3506
3507 do {
3508 usec_delay(1);
3509 /* Steps */
3510 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3511 if (ret_val != E1000_SUCCESS)
3512 break;
3513 hsflctl.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
3514
3515 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
3516 hsflctl.hsf_ctrl.fldbcount = size - 1;
3517 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_READ;
3518 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL, hsflctl.regval);
3519 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FADDR, flash_linear_addr);
3520
3521 ret_val = e1000_flash_cycle_ich8lan(hw,
3522 ICH_FLASH_READ_COMMAND_TIMEOUT);
3523
3524 /* Check if FCERR is set to 1, if set to 1, clear it
3525 * and try the whole sequence a few more times, else
3526 * read in (shift in) the Flash Data0, the order is
3527 * least significant byte first msb to lsb
3528 */
3529 if (ret_val == E1000_SUCCESS) {
3530 flash_data = E1000_READ_FLASH_REG(hw, ICH_FLASH_FDATA0);
3531 if (size == 1)
3532 *data = (u8)(flash_data & 0x000000FF);
3533 else if (size == 2)
3534 *data = (u16)(flash_data & 0x0000FFFF);
3535 break;
3536 } else {
3537 /* If we've gotten here, then things are probably
3538 * completely hosed, but if the error condition is
3539 * detected, it won't hurt to give it another try...
3540 * ICH_FLASH_CYCLE_REPEAT_COUNT times.
3541 */
3542 hsfsts.regval = E1000_READ_FLASH_REG16(hw,
3543 ICH_FLASH_HSFSTS);
3544 if (hsfsts.hsf_status.flcerr) {
3545 /* Repeat for some time before giving up. */
3546 continue;
3547 } else if (!hsfsts.hsf_status.flcdone) {
3548 DEBUGOUT("Timeout error - flash cycle did not complete.\n");
3549 break;
3550 }
3551 }
3552 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
3553
3554 return ret_val;
3555 }
3556
3557
3558 /**
3559 * e1000_write_nvm_ich8lan - Write word(s) to the NVM
3560 * @hw: pointer to the HW structure
3561 * @offset: The offset (in bytes) of the word(s) to write.
3562 * @words: Size of data to write in words
3563 * @data: Pointer to the word(s) to write at offset.
3564 *
3565 * Writes a byte or word to the NVM using the flash access registers.
3566 **/
3567 static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
3568 u16 *data)
3569 {
3570 struct e1000_nvm_info *nvm = &hw->nvm;
3571 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3572 u16 i;
3573
3574 DEBUGFUNC("e1000_write_nvm_ich8lan");
3575
3576 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
3577 (words == 0)) {
3578 DEBUGOUT("nvm parameter(s) out of bounds\n");
3579 return -E1000_ERR_NVM;
3580 }
3581
3582 nvm->ops.acquire(hw);
3583
3584 for (i = 0; i < words; i++) {
3585 dev_spec->shadow_ram[offset+i].modified = TRUE;
3586 dev_spec->shadow_ram[offset+i].value = data[i];
3587 }
3588
3589 nvm->ops.release(hw);
3590
3591 return E1000_SUCCESS;
3592 }
3593
3594 /**
3595 * e1000_update_nvm_checksum_ich8lan - Update the checksum for NVM
3596 * @hw: pointer to the HW structure
3597 *
3598 * The NVM checksum is updated by calling the generic update_nvm_checksum,
3599 * which writes the checksum to the shadow ram. The changes in the shadow
3600 * ram are then committed to the EEPROM by processing each bank at a time
3601 * checking for the modified bit and writing only the pending changes.
3602 * After a successful commit, the shadow ram is cleared and is ready for
3603 * future writes.
3604 **/
3605 static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
3606 {
3607 struct e1000_nvm_info *nvm = &hw->nvm;
3608 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3609 u32 i, act_offset, new_bank_offset, old_bank_offset, bank;
3610 s32 ret_val;
3611 u16 data = 0;
3612
3613 DEBUGFUNC("e1000_update_nvm_checksum_ich8lan");
3614
3615 ret_val = e1000_update_nvm_checksum_generic(hw);
3616 if (ret_val)
3617 goto out;
3618
3619 if (nvm->type != e1000_nvm_flash_sw)
3620 goto out;
3621
3622 nvm->ops.acquire(hw);
3623
3624 /* We're writing to the opposite bank so if we're on bank 1,
3625 * write to bank 0 etc. We also need to erase the segment that
3626 * is going to be written
3627 */
3628 ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
3629 if (ret_val != E1000_SUCCESS) {
3630 DEBUGOUT("Could not detect valid bank, assuming bank 0\n");
3631 bank = 0;
3632 }
3633
3634 if (bank == 0) {
3635 new_bank_offset = nvm->flash_bank_size;
3636 old_bank_offset = 0;
3637 ret_val = e1000_erase_flash_bank_ich8lan(hw, 1);
3638 if (ret_val)
3639 goto release;
3640 } else {
3641 old_bank_offset = nvm->flash_bank_size;
3642 new_bank_offset = 0;
3643 ret_val = e1000_erase_flash_bank_ich8lan(hw, 0);
3644 if (ret_val)
3645 goto release;
3646 }
3647 for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) {
3648 if (dev_spec->shadow_ram[i].modified) {
3649 data = dev_spec->shadow_ram[i].value;
3650 } else {
3651 ret_val = e1000_read_flash_word_ich8lan(hw, i +
3652 old_bank_offset,
3653 &data);
3654 if (ret_val)
3655 break;
3656 }
3657 /* If the word is 0x13, then make sure the signature bits
3658 * (15:14) are 11b until the commit has completed.
3659 * This will allow us to write 10b which indicates the
3660 * signature is valid. We want to do this after the write
3661 * has completed so that we don't mark the segment valid
3662 * while the write is still in progress
3663 */
3664 if (i == E1000_ICH_NVM_SIG_WORD)
3665 data |= E1000_ICH_NVM_SIG_MASK;
3666
3667 /* Convert offset to bytes. */
3668 act_offset = (i + new_bank_offset) << 1;
3669
3670 usec_delay(100);
3671
3672 /* Write the bytes to the new bank. */
3673 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
3674 act_offset,
3675 (u8)data);
3676 if (ret_val)
3677 break;
3678
3679 usec_delay(100);
3680 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
3681 act_offset + 1,
3682 (u8)(data >> 8));
3683 if (ret_val)
3684 break;
3685 }
3686
3687 /* Don't bother writing the segment valid bits if sector
3688 * programming failed.
3689 */
3690 if (ret_val) {
3691 DEBUGOUT("Flash commit failed.\n");
3692 goto release;
3693 }
3694
3695 /* Finally validate the new segment by setting bit 15:14
3696 * to 10b in word 0x13 , this can be done without an
3697 * erase as well since these bits are 11 to start with
3698 * and we need to change bit 14 to 0b
3699 */
3700 act_offset = new_bank_offset + E1000_ICH_NVM_SIG_WORD;
3701 ret_val = e1000_read_flash_word_ich8lan(hw, act_offset, &data);
3702 if (ret_val)
3703 goto release;
3704
3705 data &= 0xBFFF;
3706 ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset * 2 + 1,
3707 (u8)(data >> 8));
3708 if (ret_val)
3709 goto release;
3710
3711 /* And invalidate the previously valid segment by setting
3712 * its signature word (0x13) high_byte to 0b. This can be
3713 * done without an erase because flash erase sets all bits
3714 * to 1's. We can write 1's to 0's without an erase
3715 */
3716 act_offset = (old_bank_offset + E1000_ICH_NVM_SIG_WORD) * 2 + 1;
3717
3718 ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset, 0);
3719
3720 if (ret_val)
3721 goto release;
3722
3723 /* Great! Everything worked, we can now clear the cached entries. */
3724 for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) {
3725 dev_spec->shadow_ram[i].modified = FALSE;
3726 dev_spec->shadow_ram[i].value = 0xFFFF;
3727 }
3728
3729 release:
3730 nvm->ops.release(hw);
3731
3732 /* Reload the EEPROM, or else modifications will not appear
3733 * until after the next adapter reset.
3734 */
3735 if (!ret_val) {
3736 nvm->ops.reload(hw);
3737 msec_delay(10);
3738 }
3739
3740 out:
3741 if (ret_val)
3742 DEBUGOUT1("NVM update error: %d\n", ret_val);
3743
3744 return ret_val;
3745 }
3746
3747 /**
3748 * e1000_validate_nvm_checksum_ich8lan - Validate EEPROM checksum
3749 * @hw: pointer to the HW structure
3750 *
3751 * Check to see if checksum needs to be fixed by reading bit 6 in word 0x19.
3752 * If the bit is 0, that the EEPROM had been modified, but the checksum was not
3753 * calculated, in which case we need to calculate the checksum and set bit 6.
3754 **/
3755 static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw)
3756 {
3757 s32 ret_val;
3758 u16 data;
3759 u16 word;
3760 u16 valid_csum_mask;
3761
3762 DEBUGFUNC("e1000_validate_nvm_checksum_ich8lan");
3763
3764 /* Read NVM and check Invalid Image CSUM bit. If this bit is 0,
3765 * the checksum needs to be fixed. This bit is an indication that
3766 * the NVM was prepared by OEM software and did not calculate
3767 * the checksum...a likely scenario.
3768 */
3769 switch (hw->mac.type) {
3770 case e1000_pch_lpt:
3771 word = NVM_COMPAT;
3772 valid_csum_mask = NVM_COMPAT_VALID_CSUM;
3773 break;
3774 default:
3775 word = NVM_FUTURE_INIT_WORD1;
3776 valid_csum_mask = NVM_FUTURE_INIT_WORD1_VALID_CSUM;
3777 break;
3778 }
3779
3780 ret_val = hw->nvm.ops.read(hw, word, 1, &data);
3781 if (ret_val)
3782 return ret_val;
3783
3784 if (!(data & valid_csum_mask)) {
3785 data |= valid_csum_mask;
3786 ret_val = hw->nvm.ops.write(hw, word, 1, &data);
3787 if (ret_val)
3788 return ret_val;
3789 ret_val = hw->nvm.ops.update(hw);
3790 if (ret_val)
3791 return ret_val;
3792 }
3793
3794 return e1000_validate_nvm_checksum_generic(hw);
3795 }
3796
3797 /**
3798 * e1000_write_flash_data_ich8lan - Writes bytes to the NVM
3799 * @hw: pointer to the HW structure
3800 * @offset: The offset (in bytes) of the byte/word to read.
3801 * @size: Size of data to read, 1=byte 2=word
3802 * @data: The byte(s) to write to the NVM.
3803 *
3804 * Writes one/two bytes to the NVM using the flash access registers.
3805 **/
3806 static s32 e1000_write_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
3807 u8 size, u16 data)
3808 {
3809 union ich8_hws_flash_status hsfsts;
3810 union ich8_hws_flash_ctrl hsflctl;
3811 u32 flash_linear_addr;
3812 u32 flash_data = 0;
3813 s32 ret_val;
3814 u8 count = 0;
3815
3816 DEBUGFUNC("e1000_write_ich8_data");
3817
3818 if (size < 1 || size > 2 || offset > ICH_FLASH_LINEAR_ADDR_MASK)
3819 return -E1000_ERR_NVM;
3820
3821 flash_linear_addr = ((ICH_FLASH_LINEAR_ADDR_MASK & offset) +
3822 hw->nvm.flash_base_addr);
3823
3824 do {
3825 usec_delay(1);
3826 /* Steps */
3827 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3828 if (ret_val != E1000_SUCCESS)
3829 break;
3830 hsflctl.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
3831
3832 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
3833 hsflctl.hsf_ctrl.fldbcount = size - 1;
3834 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_WRITE;
3835 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL, hsflctl.regval);
3836
3837 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FADDR, flash_linear_addr);
3838
3839 if (size == 1)
3840 flash_data = (u32)data & 0x00FF;
3841 else
3842 flash_data = (u32)data;
3843
3844 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FDATA0, flash_data);
3845
3846 /* check if FCERR is set to 1 , if set to 1, clear it
3847 * and try the whole sequence a few more times else done
3848 */
3849 ret_val =
3850 e1000_flash_cycle_ich8lan(hw,
3851 ICH_FLASH_WRITE_COMMAND_TIMEOUT);
3852 if (ret_val == E1000_SUCCESS)
3853 break;
3854
3855 /* If we're here, then things are most likely
3856 * completely hosed, but if the error condition
3857 * is detected, it won't hurt to give it another
3858 * try...ICH_FLASH_CYCLE_REPEAT_COUNT times.
3859 */
3860 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3861 if (hsfsts.hsf_status.flcerr)
3862 /* Repeat for some time before giving up. */
3863 continue;
3864 if (!hsfsts.hsf_status.flcdone) {
3865 DEBUGOUT("Timeout error - flash cycle did not complete.\n");
3866 break;
3867 }
3868 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
3869
3870 return ret_val;
3871 }
3872
3873
3874 /**
3875 * e1000_write_flash_byte_ich8lan - Write a single byte to NVM
3876 * @hw: pointer to the HW structure
3877 * @offset: The index of the byte to read.
3878 * @data: The byte to write to the NVM.
3879 *
3880 * Writes a single byte to the NVM using the flash access registers.
3881 **/
3882 static s32 e1000_write_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
3883 u8 data)
3884 {
3885 u16 word = (u16)data;
3886
3887 DEBUGFUNC("e1000_write_flash_byte_ich8lan");
3888
3889 return e1000_write_flash_data_ich8lan(hw, offset, 1, word);
3890 }
3891
3892
3893
3894 /**
3895 * e1000_retry_write_flash_byte_ich8lan - Writes a single byte to NVM
3896 * @hw: pointer to the HW structure
3897 * @offset: The offset of the byte to write.
3898 * @byte: The byte to write to the NVM.
3899 *
3900 * Writes a single byte to the NVM using the flash access registers.
3901 * Goes through a retry algorithm before giving up.
3902 **/
3903 static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
3904 u32 offset, u8 byte)
3905 {
3906 s32 ret_val;
3907 u16 program_retries;
3908
3909 DEBUGFUNC("e1000_retry_write_flash_byte_ich8lan");
3910
3911 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
3912 if (!ret_val)
3913 return ret_val;
3914
3915 for (program_retries = 0; program_retries < 100; program_retries++) {
3916 DEBUGOUT2("Retrying Byte %2.2X at offset %u\n", byte, offset);
3917 usec_delay(100);
3918 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
3919 if (ret_val == E1000_SUCCESS)
3920 break;
3921 }
3922 if (program_retries == 100)
3923 return -E1000_ERR_NVM;
3924
3925 return E1000_SUCCESS;
3926 }
3927
3928 /**
3929 * e1000_erase_flash_bank_ich8lan - Erase a bank (4k) from NVM
3930 * @hw: pointer to the HW structure
3931 * @bank: 0 for first bank, 1 for second bank, etc.
3932 *
3933 * Erases the bank specified. Each bank is a 4k block. Banks are 0 based.
3934 * bank N is 4096 * N + flash_reg_addr.
3935 **/
3936 static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank)
3937 {
3938 struct e1000_nvm_info *nvm = &hw->nvm;
3939 union ich8_hws_flash_status hsfsts;
3940 union ich8_hws_flash_ctrl hsflctl;
3941 u32 flash_linear_addr;
3942 /* bank size is in 16bit words - adjust to bytes */
3943 u32 flash_bank_size = nvm->flash_bank_size * 2;
3944 s32 ret_val;
3945 s32 count = 0;
3946 s32 j, iteration, sector_size;
3947
3948 DEBUGFUNC("e1000_erase_flash_bank_ich8lan");
3949
3950 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3951
3952 /* Determine HW Sector size: Read BERASE bits of hw flash status
3953 * register
3954 * 00: The Hw sector is 256 bytes, hence we need to erase 16
3955 * consecutive sectors. The start index for the nth Hw sector
3956 * can be calculated as = bank * 4096 + n * 256
3957 * 01: The Hw sector is 4K bytes, hence we need to erase 1 sector.
3958 * The start index for the nth Hw sector can be calculated
3959 * as = bank * 4096
3960 * 10: The Hw sector is 8K bytes, nth sector = bank * 8192
3961 * (ich9 only, otherwise error condition)
3962 * 11: The Hw sector is 64K bytes, nth sector = bank * 65536
3963 */
3964 switch (hsfsts.hsf_status.berasesz) {
3965 case 0:
3966 /* Hw sector size 256 */
3967 sector_size = ICH_FLASH_SEG_SIZE_256;
3968 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_256;
3969 break;
3970 case 1:
3971 sector_size = ICH_FLASH_SEG_SIZE_4K;
3972 iteration = 1;
3973 break;
3974 case 2:
3975 sector_size = ICH_FLASH_SEG_SIZE_8K;
3976 iteration = 1;
3977 break;
3978 case 3:
3979 sector_size = ICH_FLASH_SEG_SIZE_64K;
3980 iteration = 1;
3981 break;
3982 default:
3983 return -E1000_ERR_NVM;
3984 }
3985
3986 /* Start with the base address, then add the sector offset. */
3987 flash_linear_addr = hw->nvm.flash_base_addr;
3988 flash_linear_addr += (bank) ? flash_bank_size : 0;
3989
3990 for (j = 0; j < iteration; j++) {
3991 do {
3992 u32 timeout = ICH_FLASH_ERASE_COMMAND_TIMEOUT;
3993
3994 /* Steps */
3995 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3996 if (ret_val)
3997 return ret_val;
3998
3999 /* Write a value 11 (block Erase) in Flash
4000 * Cycle field in hw flash control
4001 */
4002 hsflctl.regval =
4003 E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
4004
4005 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_ERASE;
4006 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL,
4007 hsflctl.regval);
4008
4009 /* Write the last 24 bits of an index within the
4010 * block into Flash Linear address field in Flash
4011 * Address.
4012 */
4013 flash_linear_addr += (j * sector_size);
4014 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FADDR,
4015 flash_linear_addr);
4016
4017 ret_val = e1000_flash_cycle_ich8lan(hw, timeout);
4018 if (ret_val == E1000_SUCCESS)
4019 break;
4020
4021 /* Check if FCERR is set to 1. If 1,
4022 * clear it and try the whole sequence
4023 * a few more times else Done
4024 */
4025 hsfsts.regval = E1000_READ_FLASH_REG16(hw,
4026 ICH_FLASH_HSFSTS);
4027 if (hsfsts.hsf_status.flcerr)
4028 /* repeat for some time before giving up */
4029 continue;
4030 else if (!hsfsts.hsf_status.flcdone)
4031 return ret_val;
4032 } while (++count < ICH_FLASH_CYCLE_REPEAT_COUNT);
4033 }
4034
4035 return E1000_SUCCESS;
4036 }
4037
4038 /**
4039 * e1000_valid_led_default_ich8lan - Set the default LED settings
4040 * @hw: pointer to the HW structure
4041 * @data: Pointer to the LED settings
4042 *
4043 * Reads the LED default settings from the NVM to data. If the NVM LED
4044 * settings is all 0's or F's, set the LED default to a valid LED default
4045 * setting.
4046 **/
4047 static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw, u16 *data)
4048 {
4049 s32 ret_val;
4050
4051 DEBUGFUNC("e1000_valid_led_default_ich8lan");
4052
4053 ret_val = hw->nvm.ops.read(hw, NVM_ID_LED_SETTINGS, 1, data);
4054 if (ret_val) {
4055 DEBUGOUT("NVM Read Error\n");
4056 return ret_val;
4057 }
4058
4059 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF)
4060 *data = ID_LED_DEFAULT_ICH8LAN;
4061
4062 return E1000_SUCCESS;
4063 }
4064
4065 /**
4066 * e1000_id_led_init_pchlan - store LED configurations
4067 * @hw: pointer to the HW structure
4068 *
4069 * PCH does not control LEDs via the LEDCTL register, rather it uses
4070 * the PHY LED configuration register.
4071 *
4072 * PCH also does not have an "always on" or "always off" mode which
4073 * complicates the ID feature. Instead of using the "on" mode to indicate
4074 * in ledctl_mode2 the LEDs to use for ID (see e1000_id_led_init_generic()),
4075 * use "link_up" mode. The LEDs will still ID on request if there is no
4076 * link based on logic in e1000_led_[on|off]_pchlan().
4077 **/
4078 static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw)
4079 {
4080 struct e1000_mac_info *mac = &hw->mac;
4081 s32 ret_val;
4082 const u32 ledctl_on = E1000_LEDCTL_MODE_LINK_UP;
4083 const u32 ledctl_off = E1000_LEDCTL_MODE_LINK_UP | E1000_PHY_LED0_IVRT;
4084 u16 data, i, temp, shift;
4085
4086 DEBUGFUNC("e1000_id_led_init_pchlan");
4087
4088 /* Get default ID LED modes */
4089 ret_val = hw->nvm.ops.valid_led_default(hw, &data);
4090 if (ret_val)
4091 return ret_val;
4092
4093 mac->ledctl_default = E1000_READ_REG(hw, E1000_LEDCTL);
4094 mac->ledctl_mode1 = mac->ledctl_default;
4095 mac->ledctl_mode2 = mac->ledctl_default;
4096
4097 for (i = 0; i < 4; i++) {
4098 temp = (data >> (i << 2)) & E1000_LEDCTL_LED0_MODE_MASK;
4099 shift = (i * 5);
4100 switch (temp) {
4101 case ID_LED_ON1_DEF2:
4102 case ID_LED_ON1_ON2:
4103 case ID_LED_ON1_OFF2:
4104 mac->ledctl_mode1 &= ~(E1000_PHY_LED0_MASK << shift);
4105 mac->ledctl_mode1 |= (ledctl_on << shift);
4106 break;
4107 case ID_LED_OFF1_DEF2:
4108 case ID_LED_OFF1_ON2:
4109 case ID_LED_OFF1_OFF2:
4110 mac->ledctl_mode1 &= ~(E1000_PHY_LED0_MASK << shift);
4111 mac->ledctl_mode1 |= (ledctl_off << shift);
4112 break;
4113 default:
4114 /* Do nothing */
4115 break;
4116 }
4117 switch (temp) {
4118 case ID_LED_DEF1_ON2:
4119 case ID_LED_ON1_ON2:
4120 case ID_LED_OFF1_ON2:
4121 mac->ledctl_mode2 &= ~(E1000_PHY_LED0_MASK << shift);
4122 mac->ledctl_mode2 |= (ledctl_on << shift);
4123 break;
4124 case ID_LED_DEF1_OFF2:
4125 case ID_LED_ON1_OFF2:
4126 case ID_LED_OFF1_OFF2:
4127 mac->ledctl_mode2 &= ~(E1000_PHY_LED0_MASK << shift);
4128 mac->ledctl_mode2 |= (ledctl_off << shift);
4129 break;
4130 default:
4131 /* Do nothing */
4132 break;
4133 }
4134 }
4135
4136 return E1000_SUCCESS;
4137 }
4138
4139 /**
4140 * e1000_get_bus_info_ich8lan - Get/Set the bus type and width
4141 * @hw: pointer to the HW structure
4142 *
4143 * ICH8 use the PCI Express bus, but does not contain a PCI Express Capability
4144 * register, so the the bus width is hard coded.
4145 **/
4146 static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw)
4147 {
4148 struct e1000_bus_info *bus = &hw->bus;
4149 s32 ret_val;
4150
4151 DEBUGFUNC("e1000_get_bus_info_ich8lan");
4152
4153 ret_val = e1000_get_bus_info_pcie_generic(hw);
4154
4155 /* ICH devices are "PCI Express"-ish. They have
4156 * a configuration space, but do not contain
4157 * PCI Express Capability registers, so bus width
4158 * must be hardcoded.
4159 */
4160 if (bus->width == e1000_bus_width_unknown)
4161 bus->width = e1000_bus_width_pcie_x1;
4162
4163 return ret_val;
4164 }
4165
4166 /**
4167 * e1000_reset_hw_ich8lan - Reset the hardware
4168 * @hw: pointer to the HW structure
4169 *
4170 * Does a full reset of the hardware which includes a reset of the PHY and
4171 * MAC.
4172 **/
4173 static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
4174 {
4175 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4176 u16 kum_cfg;
4177 u32 ctrl, reg;
4178 s32 ret_val;
4179
4180 DEBUGFUNC("e1000_reset_hw_ich8lan");
4181
4182 /* Prevent the PCI-E bus from sticking if there is no TLP connection
4183 * on the last TLP read/write transaction when MAC is reset.
4184 */
4185 ret_val = e1000_disable_pcie_master_generic(hw);
4186 if (ret_val)
4187 DEBUGOUT("PCI-E Master disable polling has failed.\n");
4188
4189 DEBUGOUT("Masking off all interrupts\n");
4190 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
4191
4192 /* Disable the Transmit and Receive units. Then delay to allow
4193 * any pending transactions to complete before we hit the MAC
4194 * with the global reset.
4195 */
4196 E1000_WRITE_REG(hw, E1000_RCTL, 0);
4197 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
4198 E1000_WRITE_FLUSH(hw);
4199
4200 msec_delay(10);
4201
4202 /* Workaround for ICH8 bit corruption issue in FIFO memory */
4203 if (hw->mac.type == e1000_ich8lan) {
4204 /* Set Tx and Rx buffer allocation to 8k apiece. */
4205 E1000_WRITE_REG(hw, E1000_PBA, E1000_PBA_8K);
4206 /* Set Packet Buffer Size to 16k. */
4207 E1000_WRITE_REG(hw, E1000_PBS, E1000_PBS_16K);
4208 }
4209
4210 if (hw->mac.type == e1000_pchlan) {
4211 /* Save the NVM K1 bit setting*/
4212 ret_val = e1000_read_nvm(hw, E1000_NVM_K1_CONFIG, 1, &kum_cfg);
4213 if (ret_val)
4214 return ret_val;
4215
4216 if (kum_cfg & E1000_NVM_K1_ENABLE)
4217 dev_spec->nvm_k1_enabled = TRUE;
4218 else
4219 dev_spec->nvm_k1_enabled = FALSE;
4220 }
4221
4222 ctrl = E1000_READ_REG(hw, E1000_CTRL);
4223
4224 if (!hw->phy.ops.check_reset_block(hw)) {
4225 /* Full-chip reset requires MAC and PHY reset at the same
4226 * time to make sure the interface between MAC and the
4227 * external PHY is reset.
4228 */
4229 ctrl |= E1000_CTRL_PHY_RST;
4230
4231 /* Gate automatic PHY configuration by hardware on
4232 * non-managed 82579
4233 */
4234 if ((hw->mac.type == e1000_pch2lan) &&
4235 !(E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID))
4236 e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
4237 }
4238 ret_val = e1000_acquire_swflag_ich8lan(hw);
4239 DEBUGOUT("Issuing a global reset to ich8lan\n");
4240 E1000_WRITE_REG(hw, E1000_CTRL, (ctrl | E1000_CTRL_RST));
4241 /* cannot issue a flush here because it hangs the hardware */
4242 msec_delay(20);
4243
4244 /* Set Phy Config Counter to 50msec */
4245 if (hw->mac.type == e1000_pch2lan) {
4246 reg = E1000_READ_REG(hw, E1000_FEXTNVM3);
4247 reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
4248 reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
4249 E1000_WRITE_REG(hw, E1000_FEXTNVM3, reg);
4250 }
4251
4252 if (!ret_val)
4253 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
4254
4255 if (ctrl & E1000_CTRL_PHY_RST) {
4256 ret_val = hw->phy.ops.get_cfg_done(hw);
4257 if (ret_val)
4258 return ret_val;
4259
4260 ret_val = e1000_post_phy_reset_ich8lan(hw);
4261 if (ret_val)
4262 return ret_val;
4263 }
4264
4265 /* For PCH, this write will make sure that any noise
4266 * will be detected as a CRC error and be dropped rather than show up
4267 * as a bad packet to the DMA engine.
4268 */
4269 if (hw->mac.type == e1000_pchlan)
4270 E1000_WRITE_REG(hw, E1000_CRC_OFFSET, 0x65656565);
4271
4272 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
4273 E1000_READ_REG(hw, E1000_ICR);
4274
4275 reg = E1000_READ_REG(hw, E1000_KABGTXD);
4276 reg |= E1000_KABGTXD_BGSQLBIAS;
4277 E1000_WRITE_REG(hw, E1000_KABGTXD, reg);
4278
4279 return E1000_SUCCESS;
4280 }
4281
4282 /**
4283 * e1000_init_hw_ich8lan - Initialize the hardware
4284 * @hw: pointer to the HW structure
4285 *
4286 * Prepares the hardware for transmit and receive by doing the following:
4287 * - initialize hardware bits
4288 * - initialize LED identification
4289 * - setup receive address registers
4290 * - setup flow control
4291 * - setup transmit descriptors
4292 * - clear statistics
4293 **/
4294 static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw)
4295 {
4296 struct e1000_mac_info *mac = &hw->mac;
4297 u32 ctrl_ext, txdctl, snoop;
4298 s32 ret_val;
4299 u16 i;
4300
4301 DEBUGFUNC("e1000_init_hw_ich8lan");
4302
4303 e1000_initialize_hw_bits_ich8lan(hw);
4304
4305 /* Initialize identification LED */
4306 ret_val = mac->ops.id_led_init(hw);
4307 /* An error is not fatal and we should not stop init due to this */
4308 if (ret_val)
4309 DEBUGOUT("Error initializing identification LED\n");
4310
4311 /* Setup the receive address. */
4312 e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
4313
4314 /* Zero out the Multicast HASH table */
4315 DEBUGOUT("Zeroing the MTA\n");
4316 for (i = 0; i < mac->mta_reg_count; i++)
4317 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
4318
4319 /* The 82578 Rx buffer will stall if wakeup is enabled in host and
4320 * the ME. Disable wakeup by clearing the host wakeup bit.
4321 * Reset the phy after disabling host wakeup to reset the Rx buffer.
4322 */
4323 if (hw->phy.type == e1000_phy_82578) {
4324 hw->phy.ops.read_reg(hw, BM_PORT_GEN_CFG, &i);
4325 i &= ~BM_WUC_HOST_WU_BIT;
4326 hw->phy.ops.write_reg(hw, BM_PORT_GEN_CFG, i);
4327 ret_val = e1000_phy_hw_reset_ich8lan(hw);
4328 if (ret_val)
4329 return ret_val;
4330 }
4331
4332 /* Setup link and flow control */
4333 ret_val = mac->ops.setup_link(hw);
4334
4335 /* Set the transmit descriptor write-back policy for both queues */
4336 txdctl = E1000_READ_REG(hw, E1000_TXDCTL(0));
4337 txdctl = ((txdctl & ~E1000_TXDCTL_WTHRESH) |
4338 E1000_TXDCTL_FULL_TX_DESC_WB);
4339 txdctl = ((txdctl & ~E1000_TXDCTL_PTHRESH) |
4340 E1000_TXDCTL_MAX_TX_DESC_PREFETCH);
4341 E1000_WRITE_REG(hw, E1000_TXDCTL(0), txdctl);
4342 txdctl = E1000_READ_REG(hw, E1000_TXDCTL(1));
4343 txdctl = ((txdctl & ~E1000_TXDCTL_WTHRESH) |
4344 E1000_TXDCTL_FULL_TX_DESC_WB);
4345 txdctl = ((txdctl & ~E1000_TXDCTL_PTHRESH) |
4346 E1000_TXDCTL_MAX_TX_DESC_PREFETCH);
4347 E1000_WRITE_REG(hw, E1000_TXDCTL(1), txdctl);
4348
4349 /* ICH8 has opposite polarity of no_snoop bits.
4350 * By default, we should use snoop behavior.
4351 */
4352 if (mac->type == e1000_ich8lan)
4353 snoop = PCIE_ICH8_SNOOP_ALL;
4354 else
4355 snoop = (u32) ~(PCIE_NO_SNOOP_ALL);
4356 e1000_set_pcie_no_snoop_generic(hw, snoop);
4357
4358 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
4359 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
4360 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
4361
4362 /* Clear all of the statistics registers (clear on read). It is
4363 * important that we do this after we have tried to establish link
4364 * because the symbol error count will increment wildly if there
4365 * is no link.
4366 */
4367 e1000_clear_hw_cntrs_ich8lan(hw);
4368
4369 return ret_val;
4370 }
4371
4372 /**
4373 * e1000_initialize_hw_bits_ich8lan - Initialize required hardware bits
4374 * @hw: pointer to the HW structure
4375 *
4376 * Sets/Clears required hardware bits necessary for correctly setting up the
4377 * hardware for transmit and receive.
4378 **/
4379 static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw)
4380 {
4381 u32 reg;
4382
4383 DEBUGFUNC("e1000_initialize_hw_bits_ich8lan");
4384
4385 /* Extended Device Control */
4386 reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
4387 reg |= (1 << 22);
4388 /* Enable PHY low-power state when MAC is at D3 w/o WoL */
4389 if (hw->mac.type >= e1000_pchlan)
4390 reg |= E1000_CTRL_EXT_PHYPDEN;
4391 E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg);
4392
4393 /* Transmit Descriptor Control 0 */
4394 reg = E1000_READ_REG(hw, E1000_TXDCTL(0));
4395 reg |= (1 << 22);
4396 E1000_WRITE_REG(hw, E1000_TXDCTL(0), reg);
4397
4398 /* Transmit Descriptor Control 1 */
4399 reg = E1000_READ_REG(hw, E1000_TXDCTL(1));
4400 reg |= (1 << 22);
4401 E1000_WRITE_REG(hw, E1000_TXDCTL(1), reg);
4402
4403 /* Transmit Arbitration Control 0 */
4404 reg = E1000_READ_REG(hw, E1000_TARC(0));
4405 if (hw->mac.type == e1000_ich8lan)
4406 reg |= (1 << 28) | (1 << 29);
4407 reg |= (1 << 23) | (1 << 24) | (1 << 26) | (1 << 27);
4408 E1000_WRITE_REG(hw, E1000_TARC(0), reg);
4409
4410 /* Transmit Arbitration Control 1 */
4411 reg = E1000_READ_REG(hw, E1000_TARC(1));
4412 if (E1000_READ_REG(hw, E1000_TCTL) & E1000_TCTL_MULR)
4413 reg &= ~(1 << 28);
4414 else
4415 reg |= (1 << 28);
4416 reg |= (1 << 24) | (1 << 26) | (1 << 30);
4417 E1000_WRITE_REG(hw, E1000_TARC(1), reg);
4418
4419 /* Device Status */
4420 if (hw->mac.type == e1000_ich8lan) {
4421 reg = E1000_READ_REG(hw, E1000_STATUS);
4422 reg &= ~(1UL << 31);
4423 E1000_WRITE_REG(hw, E1000_STATUS, reg);
4424 }
4425
4426 /* work-around descriptor data corruption issue during nfs v2 udp
4427 * traffic, just disable the nfs filtering capability
4428 */
4429 reg = E1000_READ_REG(hw, E1000_RFCTL);
4430 reg |= (E1000_RFCTL_NFSW_DIS | E1000_RFCTL_NFSR_DIS);
4431
4432 /* Disable IPv6 extension header parsing because some malformed
4433 * IPv6 headers can hang the Rx.
4434 */
4435 if (hw->mac.type == e1000_ich8lan)
4436 reg |= (E1000_RFCTL_IPV6_EX_DIS | E1000_RFCTL_NEW_IPV6_EXT_DIS);
4437 E1000_WRITE_REG(hw, E1000_RFCTL, reg);
4438
4439 /* Enable ECC on Lynxpoint */
4440 if (hw->mac.type == e1000_pch_lpt) {
4441 reg = E1000_READ_REG(hw, E1000_PBECCSTS);
4442 reg |= E1000_PBECCSTS_ECC_ENABLE;
4443 E1000_WRITE_REG(hw, E1000_PBECCSTS, reg);
4444
4445 reg = E1000_READ_REG(hw, E1000_CTRL);
4446 reg |= E1000_CTRL_MEHE;
4447 E1000_WRITE_REG(hw, E1000_CTRL, reg);
4448 }
4449
4450 return;
4451 }
4452
4453 /**
4454 * e1000_setup_link_ich8lan - Setup flow control and link settings
4455 * @hw: pointer to the HW structure
4456 *
4457 * Determines which flow control settings to use, then configures flow
4458 * control. Calls the appropriate media-specific link configuration
4459 * function. Assuming the adapter has a valid link partner, a valid link
4460 * should be established. Assumes the hardware has previously been reset
4461 * and the transmitter and receiver are not enabled.
4462 **/
4463 static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw)
4464 {
4465 s32 ret_val;
4466
4467 DEBUGFUNC("e1000_setup_link_ich8lan");
4468
4469 if (hw->phy.ops.check_reset_block(hw))
4470 return E1000_SUCCESS;
4471
4472 /* ICH parts do not have a word in the NVM to determine
4473 * the default flow control setting, so we explicitly
4474 * set it to full.
4475 */
4476 if (hw->fc.requested_mode == e1000_fc_default)
4477 hw->fc.requested_mode = e1000_fc_full;
4478
4479 /* Save off the requested flow control mode for use later. Depending
4480 * on the link partner's capabilities, we may or may not use this mode.
4481 */
4482 hw->fc.current_mode = hw->fc.requested_mode;
4483
4484 DEBUGOUT1("After fix-ups FlowControl is now = %x\n",
4485 hw->fc.current_mode);
4486
4487 /* Continue to configure the copper link. */
4488 ret_val = hw->mac.ops.setup_physical_interface(hw);
4489 if (ret_val)
4490 return ret_val;
4491
4492 E1000_WRITE_REG(hw, E1000_FCTTV, hw->fc.pause_time);
4493 if ((hw->phy.type == e1000_phy_82578) ||
4494 (hw->phy.type == e1000_phy_82579) ||
4495 (hw->phy.type == e1000_phy_i217) ||
4496 (hw->phy.type == e1000_phy_82577)) {
4497 E1000_WRITE_REG(hw, E1000_FCRTV_PCH, hw->fc.refresh_time);
4498
4499 ret_val = hw->phy.ops.write_reg(hw,
4500 PHY_REG(BM_PORT_CTRL_PAGE, 27),
4501 hw->fc.pause_time);
4502 if (ret_val)
4503 return ret_val;
4504 }
4505
4506 return e1000_set_fc_watermarks_generic(hw);
4507 }
4508
4509 /**
4510 * e1000_setup_copper_link_ich8lan - Configure MAC/PHY interface
4511 * @hw: pointer to the HW structure
4512 *
4513 * Configures the kumeran interface to the PHY to wait the appropriate time
4514 * when polling the PHY, then call the generic setup_copper_link to finish
4515 * configuring the copper link.
4516 **/
4517 static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw)
4518 {
4519 u32 ctrl;
4520 s32 ret_val;
4521 u16 reg_data;
4522
4523 DEBUGFUNC("e1000_setup_copper_link_ich8lan");
4524
4525 ctrl = E1000_READ_REG(hw, E1000_CTRL);
4526 ctrl |= E1000_CTRL_SLU;
4527 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
4528 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
4529
4530 /* Set the mac to wait the maximum time between each iteration
4531 * and increase the max iterations when polling the phy;
4532 * this fixes erroneous timeouts at 10Mbps.
4533 */
4534 ret_val = e1000_write_kmrn_reg_generic(hw, E1000_KMRNCTRLSTA_TIMEOUTS,
4535 0xFFFF);
4536 if (ret_val)
4537 return ret_val;
4538 ret_val = e1000_read_kmrn_reg_generic(hw,
4539 E1000_KMRNCTRLSTA_INBAND_PARAM,
4540 &reg_data);
4541 if (ret_val)
4542 return ret_val;
4543 reg_data |= 0x3F;
4544 ret_val = e1000_write_kmrn_reg_generic(hw,
4545 E1000_KMRNCTRLSTA_INBAND_PARAM,
4546 reg_data);
4547 if (ret_val)
4548 return ret_val;
4549
4550 switch (hw->phy.type) {
4551 case e1000_phy_igp_3:
4552 ret_val = e1000_copper_link_setup_igp(hw);
4553 if (ret_val)
4554 return ret_val;
4555 break;
4556 case e1000_phy_bm:
4557 case e1000_phy_82578:
4558 ret_val = e1000_copper_link_setup_m88(hw);
4559 if (ret_val)
4560 return ret_val;
4561 break;
4562 case e1000_phy_82577:
4563 case e1000_phy_82579:
4564 ret_val = e1000_copper_link_setup_82577(hw);
4565 if (ret_val)
4566 return ret_val;
4567 break;
4568 case e1000_phy_ife:
4569 ret_val = hw->phy.ops.read_reg(hw, IFE_PHY_MDIX_CONTROL,
4570 &reg_data);
4571 if (ret_val)
4572 return ret_val;
4573
4574 reg_data &= ~IFE_PMC_AUTO_MDIX;
4575
4576 switch (hw->phy.mdix) {
4577 case 1:
4578 reg_data &= ~IFE_PMC_FORCE_MDIX;
4579 break;
4580 case 2:
4581 reg_data |= IFE_PMC_FORCE_MDIX;
4582 break;
4583 case 0:
4584 default:
4585 reg_data |= IFE_PMC_AUTO_MDIX;
4586 break;
4587 }
4588 ret_val = hw->phy.ops.write_reg(hw, IFE_PHY_MDIX_CONTROL,
4589 reg_data);
4590 if (ret_val)
4591 return ret_val;
4592 break;
4593 default:
4594 break;
4595 }
4596
4597 return e1000_setup_copper_link_generic(hw);
4598 }
4599
4600 /**
4601 * e1000_setup_copper_link_pch_lpt - Configure MAC/PHY interface
4602 * @hw: pointer to the HW structure
4603 *
4604 * Calls the PHY specific link setup function and then calls the
4605 * generic setup_copper_link to finish configuring the link for
4606 * Lynxpoint PCH devices
4607 **/
4608 static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw)
4609 {
4610 u32 ctrl;
4611 s32 ret_val;
4612
4613 DEBUGFUNC("e1000_setup_copper_link_pch_lpt");
4614
4615 ctrl = E1000_READ_REG(hw, E1000_CTRL);
4616 ctrl |= E1000_CTRL_SLU;
4617 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
4618 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
4619
4620 ret_val = e1000_copper_link_setup_82577(hw);
4621 if (ret_val)
4622 return ret_val;
4623
4624 return e1000_setup_copper_link_generic(hw);
4625 }
4626
4627 /**
4628 * e1000_get_link_up_info_ich8lan - Get current link speed and duplex
4629 * @hw: pointer to the HW structure
4630 * @speed: pointer to store current link speed
4631 * @duplex: pointer to store the current link duplex
4632 *
4633 * Calls the generic get_speed_and_duplex to retrieve the current link
4634 * information and then calls the Kumeran lock loss workaround for links at
4635 * gigabit speeds.
4636 **/
4637 static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw, u16 *speed,
4638 u16 *duplex)
4639 {
4640 s32 ret_val;
4641
4642 DEBUGFUNC("e1000_get_link_up_info_ich8lan");
4643
4644 ret_val = e1000_get_speed_and_duplex_copper_generic(hw, speed, duplex);
4645 if (ret_val)
4646 return ret_val;
4647
4648 if ((hw->mac.type == e1000_ich8lan) &&
4649 (hw->phy.type == e1000_phy_igp_3) &&
4650 (*speed == SPEED_1000)) {
4651 ret_val = e1000_kmrn_lock_loss_workaround_ich8lan(hw);
4652 }
4653
4654 return ret_val;
4655 }
4656
4657 /**
4658 * e1000_kmrn_lock_loss_workaround_ich8lan - Kumeran workaround
4659 * @hw: pointer to the HW structure
4660 *
4661 * Work-around for 82566 Kumeran PCS lock loss:
4662 * On link status change (i.e. PCI reset, speed change) and link is up and
4663 * speed is gigabit-
4664 * 0) if workaround is optionally disabled do nothing
4665 * 1) wait 1ms for Kumeran link to come up
4666 * 2) check Kumeran Diagnostic register PCS lock loss bit
4667 * 3) if not set the link is locked (all is good), otherwise...
4668 * 4) reset the PHY
4669 * 5) repeat up to 10 times
4670 * Note: this is only called for IGP3 copper when speed is 1gb.
4671 **/
4672 static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw)
4673 {
4674 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4675 u32 phy_ctrl;
4676 s32 ret_val;
4677 u16 i, data;
4678 bool link;
4679
4680 DEBUGFUNC("e1000_kmrn_lock_loss_workaround_ich8lan");
4681
4682 if (!dev_spec->kmrn_lock_loss_workaround_enabled)
4683 return E1000_SUCCESS;
4684
4685 /* Make sure link is up before proceeding. If not just return.
4686 * Attempting this while link is negotiating fouled up link
4687 * stability
4688 */
4689 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
4690 if (!link)
4691 return E1000_SUCCESS;
4692
4693 for (i = 0; i < 10; i++) {
4694 /* read once to clear */
4695 ret_val = hw->phy.ops.read_reg(hw, IGP3_KMRN_DIAG, &data);
4696 if (ret_val)
4697 return ret_val;
4698 /* and again to get new status */
4699 ret_val = hw->phy.ops.read_reg(hw, IGP3_KMRN_DIAG, &data);
4700 if (ret_val)
4701 return ret_val;
4702
4703 /* check for PCS lock */
4704 if (!(data & IGP3_KMRN_DIAG_PCS_LOCK_LOSS))
4705 return E1000_SUCCESS;
4706
4707 /* Issue PHY reset */
4708 hw->phy.ops.reset(hw);
4709 msec_delay_irq(5);
4710 }
4711 /* Disable GigE link negotiation */
4712 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
4713 phy_ctrl |= (E1000_PHY_CTRL_GBE_DISABLE |
4714 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
4715 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
4716
4717 /* Call gig speed drop workaround on Gig disable before accessing
4718 * any PHY registers
4719 */
4720 e1000_gig_downshift_workaround_ich8lan(hw);
4721
4722 /* unable to acquire PCS lock */
4723 return -E1000_ERR_PHY;
4724 }
4725
4726 /**
4727 * e1000_set_kmrn_lock_loss_workaround_ich8lan - Set Kumeran workaround state
4728 * @hw: pointer to the HW structure
4729 * @state: boolean value used to set the current Kumeran workaround state
4730 *
4731 * If ICH8, set the current Kumeran workaround state (enabled - TRUE
4732 * /disabled - FALSE).
4733 **/
4734 void e1000_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,
4735 bool state)
4736 {
4737 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4738
4739 DEBUGFUNC("e1000_set_kmrn_lock_loss_workaround_ich8lan");
4740
4741 if (hw->mac.type != e1000_ich8lan) {
4742 DEBUGOUT("Workaround applies to ICH8 only.\n");
4743 return;
4744 }
4745
4746 dev_spec->kmrn_lock_loss_workaround_enabled = state;
4747
4748 return;
4749 }
4750
4751 /**
4752 * e1000_ipg3_phy_powerdown_workaround_ich8lan - Power down workaround on D3
4753 * @hw: pointer to the HW structure
4754 *
4755 * Workaround for 82566 power-down on D3 entry:
4756 * 1) disable gigabit link
4757 * 2) write VR power-down enable
4758 * 3) read it back
4759 * Continue if successful, else issue LCD reset and repeat
4760 **/
4761 void e1000_igp3_phy_powerdown_workaround_ich8lan(struct e1000_hw *hw)
4762 {
4763 u32 reg;
4764 u16 data;
4765 u8 retry = 0;
4766
4767 DEBUGFUNC("e1000_igp3_phy_powerdown_workaround_ich8lan");
4768
4769 if (hw->phy.type != e1000_phy_igp_3)
4770 return;
4771
4772 /* Try the workaround twice (if needed) */
4773 do {
4774 /* Disable link */
4775 reg = E1000_READ_REG(hw, E1000_PHY_CTRL);
4776 reg |= (E1000_PHY_CTRL_GBE_DISABLE |
4777 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
4778 E1000_WRITE_REG(hw, E1000_PHY_CTRL, reg);
4779
4780 /* Call gig speed drop workaround on Gig disable before
4781 * accessing any PHY registers
4782 */
4783 if (hw->mac.type == e1000_ich8lan)
4784 e1000_gig_downshift_workaround_ich8lan(hw);
4785
4786 /* Write VR power-down enable */
4787 hw->phy.ops.read_reg(hw, IGP3_VR_CTRL, &data);
4788 data &= ~IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
4789 hw->phy.ops.write_reg(hw, IGP3_VR_CTRL,
4790 data | IGP3_VR_CTRL_MODE_SHUTDOWN);
4791
4792 /* Read it back and test */
4793 hw->phy.ops.read_reg(hw, IGP3_VR_CTRL, &data);
4794 data &= IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
4795 if ((data == IGP3_VR_CTRL_MODE_SHUTDOWN) || retry)
4796 break;
4797
4798 /* Issue PHY reset and repeat at most one more time */
4799 reg = E1000_READ_REG(hw, E1000_CTRL);
4800 E1000_WRITE_REG(hw, E1000_CTRL, reg | E1000_CTRL_PHY_RST);
4801 retry++;
4802 } while (retry);
4803 }
4804
4805 /**
4806 * e1000_gig_downshift_workaround_ich8lan - WoL from S5 stops working
4807 * @hw: pointer to the HW structure
4808 *
4809 * Steps to take when dropping from 1Gb/s (eg. link cable removal (LSC),
4810 * LPLU, Gig disable, MDIC PHY reset):
4811 * 1) Set Kumeran Near-end loopback
4812 * 2) Clear Kumeran Near-end loopback
4813 * Should only be called for ICH8[m] devices with any 1G Phy.
4814 **/
4815 void e1000_gig_downshift_workaround_ich8lan(struct e1000_hw *hw)
4816 {
4817 s32 ret_val;
4818 u16 reg_data;
4819
4820 DEBUGFUNC("e1000_gig_downshift_workaround_ich8lan");
4821
4822 if ((hw->mac.type != e1000_ich8lan) ||
4823 (hw->phy.type == e1000_phy_ife))
4824 return;
4825
4826 ret_val = e1000_read_kmrn_reg_generic(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
4827 &reg_data);
4828 if (ret_val)
4829 return;
4830 reg_data |= E1000_KMRNCTRLSTA_DIAG_NELPBK;
4831 ret_val = e1000_write_kmrn_reg_generic(hw,
4832 E1000_KMRNCTRLSTA_DIAG_OFFSET,
4833 reg_data);
4834 if (ret_val)
4835 return;
4836 reg_data &= ~E1000_KMRNCTRLSTA_DIAG_NELPBK;
4837 e1000_write_kmrn_reg_generic(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
4838 reg_data);
4839 }
4840
4841 /**
4842 * e1000_suspend_workarounds_ich8lan - workarounds needed during S0->Sx
4843 * @hw: pointer to the HW structure
4844 *
4845 * During S0 to Sx transition, it is possible the link remains at gig
4846 * instead of negotiating to a lower speed. Before going to Sx, set
4847 * 'Gig Disable' to force link speed negotiation to a lower speed based on
4848 * the LPLU setting in the NVM or custom setting. For PCH and newer parts,
4849 * the OEM bits PHY register (LED, GbE disable and LPLU configurations) also
4850 * needs to be written.
4851 * Parts that support (and are linked to a partner which support) EEE in
4852 * 100Mbps should disable LPLU since 100Mbps w/ EEE requires less power
4853 * than 10Mbps w/o EEE.
4854 **/
4855 void e1000_suspend_workarounds_ich8lan(struct e1000_hw *hw)
4856 {
4857 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4858 u32 phy_ctrl;
4859 s32 ret_val;
4860
4861 DEBUGFUNC("e1000_suspend_workarounds_ich8lan");
4862
4863 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
4864 phy_ctrl |= E1000_PHY_CTRL_GBE_DISABLE;
4865
4866 if (hw->phy.type == e1000_phy_i217) {
4867 u16 phy_reg, device_id = hw->device_id;
4868
4869 if ((device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
4870 (device_id == E1000_DEV_ID_PCH_LPTLP_I218_V) ||
4871 (device_id == E1000_DEV_ID_PCH_I218_LM3) ||
4872 (device_id == E1000_DEV_ID_PCH_I218_V3)) {
4873 u32 fextnvm6 = E1000_READ_REG(hw, E1000_FEXTNVM6);
4874
4875 E1000_WRITE_REG(hw, E1000_FEXTNVM6,
4876 fextnvm6 & ~E1000_FEXTNVM6_REQ_PLL_CLK);
4877 }
4878
4879 ret_val = hw->phy.ops.acquire(hw);
4880 if (ret_val)
4881 goto out;
4882
4883 if (!dev_spec->eee_disable) {
4884 u16 eee_advert;
4885
4886 ret_val =
4887 e1000_read_emi_reg_locked(hw,
4888 I217_EEE_ADVERTISEMENT,
4889 &eee_advert);
4890 if (ret_val)
4891 goto release;
4892
4893 /* Disable LPLU if both link partners support 100BaseT
4894 * EEE and 100Full is advertised on both ends of the
4895 * link, and enable Auto Enable LPI since there will
4896 * be no driver to enable LPI while in Sx.
4897 */
4898 if ((eee_advert & I82579_EEE_100_SUPPORTED) &&
4899 (dev_spec->eee_lp_ability &
4900 I82579_EEE_100_SUPPORTED) &&
4901 (hw->phy.autoneg_advertised & ADVERTISE_100_FULL)) {
4902 phy_ctrl &= ~(E1000_PHY_CTRL_D0A_LPLU |
4903 E1000_PHY_CTRL_NOND0A_LPLU);
4904
4905 /* Set Auto Enable LPI after link up */
4906 hw->phy.ops.read_reg_locked(hw,
4907 I217_LPI_GPIO_CTRL,
4908 &phy_reg);
4909 phy_reg |= I217_LPI_GPIO_CTRL_AUTO_EN_LPI;
4910 hw->phy.ops.write_reg_locked(hw,
4911 I217_LPI_GPIO_CTRL,
4912 phy_reg);
4913 }
4914 }
4915
4916 /* For i217 Intel Rapid Start Technology support,
4917 * when the system is going into Sx and no manageability engine
4918 * is present, the driver must configure proxy to reset only on
4919 * power good. LPI (Low Power Idle) state must also reset only
4920 * on power good, as well as the MTA (Multicast table array).
4921 * The SMBus release must also be disabled on LCD reset.
4922 */
4923 if (!(E1000_READ_REG(hw, E1000_FWSM) &
4924 E1000_ICH_FWSM_FW_VALID)) {
4925 /* Enable proxy to reset only on power good. */
4926 hw->phy.ops.read_reg_locked(hw, I217_PROXY_CTRL,
4927 &phy_reg);
4928 phy_reg |= I217_PROXY_CTRL_AUTO_DISABLE;
4929 hw->phy.ops.write_reg_locked(hw, I217_PROXY_CTRL,
4930 phy_reg);
4931
4932 /* Set bit enable LPI (EEE) to reset only on
4933 * power good.
4934 */
4935 hw->phy.ops.read_reg_locked(hw, I217_SxCTRL, &phy_reg);
4936 phy_reg |= I217_SxCTRL_ENABLE_LPI_RESET;
4937 hw->phy.ops.write_reg_locked(hw, I217_SxCTRL, phy_reg);
4938
4939 /* Disable the SMB release on LCD reset. */
4940 hw->phy.ops.read_reg_locked(hw, I217_MEMPWR, &phy_reg);
4941 phy_reg &= ~I217_MEMPWR_DISABLE_SMB_RELEASE;
4942 hw->phy.ops.write_reg_locked(hw, I217_MEMPWR, phy_reg);
4943 }
4944
4945 /* Enable MTA to reset for Intel Rapid Start Technology
4946 * Support
4947 */
4948 hw->phy.ops.read_reg_locked(hw, I217_CGFREG, &phy_reg);
4949 phy_reg |= I217_CGFREG_ENABLE_MTA_RESET;
4950 hw->phy.ops.write_reg_locked(hw, I217_CGFREG, phy_reg);
4951
4952 release:
4953 hw->phy.ops.release(hw);
4954 }
4955 out:
4956 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
4957
4958 if (hw->mac.type == e1000_ich8lan)
4959 e1000_gig_downshift_workaround_ich8lan(hw);
4960
4961 if (hw->mac.type >= e1000_pchlan) {
4962 e1000_oem_bits_config_ich8lan(hw, FALSE);
4963
4964 /* Reset PHY to activate OEM bits on 82577/8 */
4965 if (hw->mac.type == e1000_pchlan)
4966 e1000_phy_hw_reset_generic(hw);
4967
4968 ret_val = hw->phy.ops.acquire(hw);
4969 if (ret_val)
4970 return;
4971 e1000_write_smbus_addr(hw);
4972 hw->phy.ops.release(hw);
4973 }
4974
4975 return;
4976 }
4977
4978 /**
4979 * e1000_resume_workarounds_pchlan - workarounds needed during Sx->S0
4980 * @hw: pointer to the HW structure
4981 *
4982 * During Sx to S0 transitions on non-managed devices or managed devices
4983 * on which PHY resets are not blocked, if the PHY registers cannot be
4984 * accessed properly by the s/w toggle the LANPHYPC value to power cycle
4985 * the PHY.
4986 * On i217, setup Intel Rapid Start Technology.
4987 **/
4988 void e1000_resume_workarounds_pchlan(struct e1000_hw *hw)
4989 {
4990 s32 ret_val;
4991
4992 DEBUGFUNC("e1000_resume_workarounds_pchlan");
4993
4994 if (hw->mac.type < e1000_pch2lan)
4995 return;
4996
4997 ret_val = e1000_init_phy_workarounds_pchlan(hw);
4998 if (ret_val) {
4999 DEBUGOUT1("Failed to init PHY flow ret_val=%d\n", ret_val);
5000 return;
5001 }
5002
5003 /* For i217 Intel Rapid Start Technology support when the system
5004 * is transitioning from Sx and no manageability engine is present
5005 * configure SMBus to restore on reset, disable proxy, and enable
5006 * the reset on MTA (Multicast table array).
5007 */
5008 if (hw->phy.type == e1000_phy_i217) {
5009 u16 phy_reg;
5010
5011 ret_val = hw->phy.ops.acquire(hw);
5012 if (ret_val) {
5013 DEBUGOUT("Failed to setup iRST\n");
5014 return;
5015 }
5016
5017 /* Clear Auto Enable LPI after link up */
5018 hw->phy.ops.read_reg_locked(hw, I217_LPI_GPIO_CTRL, &phy_reg);
5019 phy_reg &= ~I217_LPI_GPIO_CTRL_AUTO_EN_LPI;
5020 hw->phy.ops.write_reg_locked(hw, I217_LPI_GPIO_CTRL, phy_reg);
5021
5022 if (!(E1000_READ_REG(hw, E1000_FWSM) &
5023 E1000_ICH_FWSM_FW_VALID)) {
5024 /* Restore clear on SMB if no manageability engine
5025 * is present
5026 */
5027 ret_val = hw->phy.ops.read_reg_locked(hw, I217_MEMPWR,
5028 &phy_reg);
5029 if (ret_val)
5030 goto release;
5031 phy_reg |= I217_MEMPWR_DISABLE_SMB_RELEASE;
5032 hw->phy.ops.write_reg_locked(hw, I217_MEMPWR, phy_reg);
5033
5034 /* Disable Proxy */
5035 hw->phy.ops.write_reg_locked(hw, I217_PROXY_CTRL, 0);
5036 }
5037 /* Enable reset on MTA */
5038 ret_val = hw->phy.ops.read_reg_locked(hw, I217_CGFREG,
5039 &phy_reg);
5040 if (ret_val)
5041 goto release;
5042 phy_reg &= ~I217_CGFREG_ENABLE_MTA_RESET;
5043 hw->phy.ops.write_reg_locked(hw, I217_CGFREG, phy_reg);
5044 release:
5045 if (ret_val)
5046 DEBUGOUT1("Error %d in resume workarounds\n", ret_val);
5047 hw->phy.ops.release(hw);
5048 }
5049 }
5050
5051 /**
5052 * e1000_cleanup_led_ich8lan - Restore the default LED operation
5053 * @hw: pointer to the HW structure
5054 *
5055 * Return the LED back to the default configuration.
5056 **/
5057 static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw)
5058 {
5059 DEBUGFUNC("e1000_cleanup_led_ich8lan");
5060
5061 if (hw->phy.type == e1000_phy_ife)
5062 return hw->phy.ops.write_reg(hw, IFE_PHY_SPECIAL_CONTROL_LED,
5063 0);
5064
5065 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_default);
5066 return E1000_SUCCESS;
5067 }
5068
5069 /**
5070 * e1000_led_on_ich8lan - Turn LEDs on
5071 * @hw: pointer to the HW structure
5072 *
5073 * Turn on the LEDs.
5074 **/
5075 static s32 e1000_led_on_ich8lan(struct e1000_hw *hw)
5076 {
5077 DEBUGFUNC("e1000_led_on_ich8lan");
5078
5079 if (hw->phy.type == e1000_phy_ife)
5080 return hw->phy.ops.write_reg(hw, IFE_PHY_SPECIAL_CONTROL_LED,
5081 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_ON));
5082
5083 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_mode2);
5084 return E1000_SUCCESS;
5085 }
5086
5087 /**
5088 * e1000_led_off_ich8lan - Turn LEDs off
5089 * @hw: pointer to the HW structure
5090 *
5091 * Turn off the LEDs.
5092 **/
5093 static s32 e1000_led_off_ich8lan(struct e1000_hw *hw)
5094 {
5095 DEBUGFUNC("e1000_led_off_ich8lan");
5096
5097 if (hw->phy.type == e1000_phy_ife)
5098 return hw->phy.ops.write_reg(hw, IFE_PHY_SPECIAL_CONTROL_LED,
5099 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_OFF));
5100
5101 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_mode1);
5102 return E1000_SUCCESS;
5103 }
5104
5105 /**
5106 * e1000_setup_led_pchlan - Configures SW controllable LED
5107 * @hw: pointer to the HW structure
5108 *
5109 * This prepares the SW controllable LED for use.
5110 **/
5111 static s32 e1000_setup_led_pchlan(struct e1000_hw *hw)
5112 {
5113 DEBUGFUNC("e1000_setup_led_pchlan");
5114
5115 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG,
5116 (u16)hw->mac.ledctl_mode1);
5117 }
5118
5119 /**
5120 * e1000_cleanup_led_pchlan - Restore the default LED operation
5121 * @hw: pointer to the HW structure
5122 *
5123 * Return the LED back to the default configuration.
5124 **/
5125 static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw)
5126 {
5127 DEBUGFUNC("e1000_cleanup_led_pchlan");
5128
5129 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG,
5130 (u16)hw->mac.ledctl_default);
5131 }
5132
5133 /**
5134 * e1000_led_on_pchlan - Turn LEDs on
5135 * @hw: pointer to the HW structure
5136 *
5137 * Turn on the LEDs.
5138 **/
5139 static s32 e1000_led_on_pchlan(struct e1000_hw *hw)
5140 {
5141 u16 data = (u16)hw->mac.ledctl_mode2;
5142 u32 i, led;
5143
5144 DEBUGFUNC("e1000_led_on_pchlan");
5145
5146 /* If no link, then turn LED on by setting the invert bit
5147 * for each LED that's mode is "link_up" in ledctl_mode2.
5148 */
5149 if (!(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
5150 for (i = 0; i < 3; i++) {
5151 led = (data >> (i * 5)) & E1000_PHY_LED0_MASK;
5152 if ((led & E1000_PHY_LED0_MODE_MASK) !=
5153 E1000_LEDCTL_MODE_LINK_UP)
5154 continue;
5155 if (led & E1000_PHY_LED0_IVRT)
5156 data &= ~(E1000_PHY_LED0_IVRT << (i * 5));
5157 else
5158 data |= (E1000_PHY_LED0_IVRT << (i * 5));
5159 }
5160 }
5161
5162 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG, data);
5163 }
5164
5165 /**
5166 * e1000_led_off_pchlan - Turn LEDs off
5167 * @hw: pointer to the HW structure
5168 *
5169 * Turn off the LEDs.
5170 **/
5171 static s32 e1000_led_off_pchlan(struct e1000_hw *hw)
5172 {
5173 u16 data = (u16)hw->mac.ledctl_mode1;
5174 u32 i, led;
5175
5176 DEBUGFUNC("e1000_led_off_pchlan");
5177
5178 /* If no link, then turn LED off by clearing the invert bit
5179 * for each LED that's mode is "link_up" in ledctl_mode1.
5180 */
5181 if (!(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
5182 for (i = 0; i < 3; i++) {
5183 led = (data >> (i * 5)) & E1000_PHY_LED0_MASK;
5184 if ((led & E1000_PHY_LED0_MODE_MASK) !=
5185 E1000_LEDCTL_MODE_LINK_UP)
5186 continue;
5187 if (led & E1000_PHY_LED0_IVRT)
5188 data &= ~(E1000_PHY_LED0_IVRT << (i * 5));
5189 else
5190 data |= (E1000_PHY_LED0_IVRT << (i * 5));
5191 }
5192 }
5193
5194 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG, data);
5195 }
5196
5197 /**
5198 * e1000_get_cfg_done_ich8lan - Read config done bit after Full or PHY reset
5199 * @hw: pointer to the HW structure
5200 *
5201 * Read appropriate register for the config done bit for completion status
5202 * and configure the PHY through s/w for EEPROM-less parts.
5203 *
5204 * NOTE: some silicon which is EEPROM-less will fail trying to read the
5205 * config done bit, so only an error is logged and continues. If we were
5206 * to return with error, EEPROM-less silicon would not be able to be reset
5207 * or change link.
5208 **/
5209 static s32 e1000_get_cfg_done_ich8lan(struct e1000_hw *hw)
5210 {
5211 s32 ret_val = E1000_SUCCESS;
5212 u32 bank = 0;
5213 u32 status;
5214
5215 DEBUGFUNC("e1000_get_cfg_done_ich8lan");
5216
5217 e1000_get_cfg_done_generic(hw);
5218
5219 /* Wait for indication from h/w that it has completed basic config */
5220 if (hw->mac.type >= e1000_ich10lan) {
5221 e1000_lan_init_done_ich8lan(hw);
5222 } else {
5223 ret_val = e1000_get_auto_rd_done_generic(hw);
5224 if (ret_val) {
5225 /* When auto config read does not complete, do not
5226 * return with an error. This can happen in situations
5227 * where there is no eeprom and prevents getting link.
5228 */
5229 DEBUGOUT("Auto Read Done did not complete\n");
5230 ret_val = E1000_SUCCESS;
5231 }
5232 }
5233
5234 /* Clear PHY Reset Asserted bit */
5235 status = E1000_READ_REG(hw, E1000_STATUS);
5236 if (status & E1000_STATUS_PHYRA) {
5237 E1000_WRITE_REG(hw, E1000_STATUS, status & ~E1000_STATUS_PHYRA);
5238 } else {
5239 DEBUGOUT("PHY Reset Asserted not set - needs delay\n");
5240 }
5241
5242 /* If EEPROM is not marked present, init the IGP 3 PHY manually */
5243 if (hw->mac.type <= e1000_ich9lan) {
5244 if (!(E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES) &&
5245 (hw->phy.type == e1000_phy_igp_3)) {
5246 e1000_phy_init_script_igp3(hw);
5247 }
5248 } else {
5249 if (e1000_valid_nvm_bank_detect_ich8lan(hw, &bank)) {
5250 /* Maybe we should do a basic PHY config */
5251 DEBUGOUT("EEPROM not present\n");
5252 ret_val = -E1000_ERR_CONFIG;
5253 }
5254 }
5255
5256 return ret_val;
5257 }
5258
5259 /**
5260 * e1000_power_down_phy_copper_ich8lan - Remove link during PHY power down
5261 * @hw: pointer to the HW structure
5262 *
5263 * In the case of a PHY power down to save power, or to turn off link during a
5264 * driver unload, or wake on lan is not enabled, remove the link.
5265 **/
5266 static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw)
5267 {
5268 /* If the management interface is not enabled, then power down */
5269 if (!(hw->mac.ops.check_mng_mode(hw) ||
5270 hw->phy.ops.check_reset_block(hw)))
5271 e1000_power_down_phy_copper(hw);
5272
5273 return;
5274 }
5275
5276 /**
5277 * e1000_clear_hw_cntrs_ich8lan - Clear statistical counters
5278 * @hw: pointer to the HW structure
5279 *
5280 * Clears hardware counters specific to the silicon family and calls
5281 * clear_hw_cntrs_generic to clear all general purpose counters.
5282 **/
5283 static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw)
5284 {
5285 u16 phy_data;
5286 s32 ret_val;
5287
5288 DEBUGFUNC("e1000_clear_hw_cntrs_ich8lan");
5289
5290 e1000_clear_hw_cntrs_base_generic(hw);
5291
5292 E1000_READ_REG(hw, E1000_ALGNERRC);
5293 E1000_READ_REG(hw, E1000_RXERRC);
5294 E1000_READ_REG(hw, E1000_TNCRS);
5295 E1000_READ_REG(hw, E1000_CEXTERR);
5296 E1000_READ_REG(hw, E1000_TSCTC);
5297 E1000_READ_REG(hw, E1000_TSCTFC);
5298
5299 E1000_READ_REG(hw, E1000_MGTPRC);
5300 E1000_READ_REG(hw, E1000_MGTPDC);
5301 E1000_READ_REG(hw, E1000_MGTPTC);
5302
5303 E1000_READ_REG(hw, E1000_IAC);
5304 E1000_READ_REG(hw, E1000_ICRXOC);
5305
5306 /* Clear PHY statistics registers */
5307 if ((hw->phy.type == e1000_phy_82578) ||
5308 (hw->phy.type == e1000_phy_82579) ||
5309 (hw->phy.type == e1000_phy_i217) ||
5310 (hw->phy.type == e1000_phy_82577)) {
5311 ret_val = hw->phy.ops.acquire(hw);
5312 if (ret_val)
5313 return;
5314 ret_val = hw->phy.ops.set_page(hw,
5315 HV_STATS_PAGE << IGP_PAGE_SHIFT);
5316 if (ret_val)
5317 goto release;
5318 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
5319 hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
5320 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
5321 hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
5322 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
5323 hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
5324 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
5325 hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
5326 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
5327 hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
5328 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
5329 hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
5330 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
5331 hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
5332 release:
5333 hw->phy.ops.release(hw);
5334 }
5335 }
5336
Unleashed OS