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Linux 3.11-rc3
[cris-mirror.git] / drivers / net / ethernet / intel / e1000e / ich8lan.c
blob9dde390f7e71c34f327f1e1bc213dce5338b917c
1 /*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2013 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27 *******************************************************************************/
28
29 /* 82562G 10/100 Network Connection
30 * 82562G-2 10/100 Network Connection
31 * 82562GT 10/100 Network Connection
32 * 82562GT-2 10/100 Network Connection
33 * 82562V 10/100 Network Connection
34 * 82562V-2 10/100 Network Connection
35 * 82566DC-2 Gigabit Network Connection
36 * 82566DC Gigabit Network Connection
37 * 82566DM-2 Gigabit Network Connection
38 * 82566DM Gigabit Network Connection
39 * 82566MC Gigabit Network Connection
40 * 82566MM Gigabit Network Connection
41 * 82567LM Gigabit Network Connection
42 * 82567LF Gigabit Network Connection
43 * 82567V Gigabit Network Connection
44 * 82567LM-2 Gigabit Network Connection
45 * 82567LF-2 Gigabit Network Connection
46 * 82567V-2 Gigabit Network Connection
47 * 82567LF-3 Gigabit Network Connection
48 * 82567LM-3 Gigabit Network Connection
49 * 82567LM-4 Gigabit Network Connection
50 * 82577LM Gigabit Network Connection
51 * 82577LC Gigabit Network Connection
52 * 82578DM Gigabit Network Connection
53 * 82578DC Gigabit Network Connection
54 * 82579LM Gigabit Network Connection
55 * 82579V Gigabit Network Connection
56 */
57
58 #include "e1000.h"
59
60 /* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
61 /* Offset 04h HSFSTS */
62 union ich8_hws_flash_status {
63 struct ich8_hsfsts {
64 u16 flcdone:1; /* bit 0 Flash Cycle Done */
65 u16 flcerr:1; /* bit 1 Flash Cycle Error */
66 u16 dael:1; /* bit 2 Direct Access error Log */
67 u16 berasesz:2; /* bit 4:3 Sector Erase Size */
68 u16 flcinprog:1; /* bit 5 flash cycle in Progress */
69 u16 reserved1:2; /* bit 13:6 Reserved */
70 u16 reserved2:6; /* bit 13:6 Reserved */
71 u16 fldesvalid:1; /* bit 14 Flash Descriptor Valid */
72 u16 flockdn:1; /* bit 15 Flash Config Lock-Down */
73 } hsf_status;
74 u16 regval;
75 };
76
77 /* ICH GbE Flash Hardware Sequencing Flash control Register bit breakdown */
78 /* Offset 06h FLCTL */
79 union ich8_hws_flash_ctrl {
80 struct ich8_hsflctl {
81 u16 flcgo:1; /* 0 Flash Cycle Go */
82 u16 flcycle:2; /* 2:1 Flash Cycle */
83 u16 reserved:5; /* 7:3 Reserved */
84 u16 fldbcount:2; /* 9:8 Flash Data Byte Count */
85 u16 flockdn:6; /* 15:10 Reserved */
86 } hsf_ctrl;
87 u16 regval;
88 };
89
90 /* ICH Flash Region Access Permissions */
91 union ich8_hws_flash_regacc {
92 struct ich8_flracc {
93 u32 grra:8; /* 0:7 GbE region Read Access */
94 u32 grwa:8; /* 8:15 GbE region Write Access */
95 u32 gmrag:8; /* 23:16 GbE Master Read Access Grant */
96 u32 gmwag:8; /* 31:24 GbE Master Write Access Grant */
97 } hsf_flregacc;
98 u16 regval;
99 };
100
101 /* ICH Flash Protected Region */
102 union ich8_flash_protected_range {
103 struct ich8_pr {
104 u32 base:13; /* 0:12 Protected Range Base */
105 u32 reserved1:2; /* 13:14 Reserved */
106 u32 rpe:1; /* 15 Read Protection Enable */
107 u32 limit:13; /* 16:28 Protected Range Limit */
108 u32 reserved2:2; /* 29:30 Reserved */
109 u32 wpe:1; /* 31 Write Protection Enable */
110 } range;
111 u32 regval;
112 };
113
114 static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw);
115 static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw);
116 static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank);
117 static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
118 u32 offset, u8 byte);
119 static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
120 u8 *data);
121 static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw, u32 offset,
122 u16 *data);
123 static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
124 u8 size, u16 *data);
125 static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw);
126 static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw);
127 static s32 e1000_led_on_ich8lan(struct e1000_hw *hw);
128 static s32 e1000_led_off_ich8lan(struct e1000_hw *hw);
129 static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw);
130 static s32 e1000_setup_led_pchlan(struct e1000_hw *hw);
131 static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw);
132 static s32 e1000_led_on_pchlan(struct e1000_hw *hw);
133 static s32 e1000_led_off_pchlan(struct e1000_hw *hw);
134 static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active);
135 static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw);
136 static void e1000_lan_init_done_ich8lan(struct e1000_hw *hw);
137 static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link);
138 static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw);
139 static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw);
140 static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw);
141 static void e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index);
142 static void e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index);
143 static s32 e1000_k1_workaround_lv(struct e1000_hw *hw);
144 static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate);
145 static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw);
146
147 static inline u16 __er16flash(struct e1000_hw *hw, unsigned long reg)
148 {
149 return readw(hw->flash_address + reg);
150 }
151
152 static inline u32 __er32flash(struct e1000_hw *hw, unsigned long reg)
153 {
154 return readl(hw->flash_address + reg);
155 }
156
157 static inline void __ew16flash(struct e1000_hw *hw, unsigned long reg, u16 val)
158 {
159 writew(val, hw->flash_address + reg);
160 }
161
162 static inline void __ew32flash(struct e1000_hw *hw, unsigned long reg, u32 val)
163 {
164 writel(val, hw->flash_address + reg);
165 }
166
167 #define er16flash(reg) __er16flash(hw, (reg))
168 #define er32flash(reg) __er32flash(hw, (reg))
169 #define ew16flash(reg, val) __ew16flash(hw, (reg), (val))
170 #define ew32flash(reg, val) __ew32flash(hw, (reg), (val))
171
172 /**
173 * e1000_phy_is_accessible_pchlan - Check if able to access PHY registers
174 * @hw: pointer to the HW structure
175 *
176 * Test access to the PHY registers by reading the PHY ID registers. If
177 * the PHY ID is already known (e.g. resume path) compare it with known ID,
178 * otherwise assume the read PHY ID is correct if it is valid.
179 *
180 * Assumes the sw/fw/hw semaphore is already acquired.
181 **/
182 static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw)
183 {
184 u16 phy_reg = 0;
185 u32 phy_id = 0;
186 s32 ret_val;
187 u16 retry_count;
188
189 for (retry_count = 0; retry_count < 2; retry_count++) {
190 ret_val = e1e_rphy_locked(hw, MII_PHYSID1, &phy_reg);
191 if (ret_val || (phy_reg == 0xFFFF))
192 continue;
193 phy_id = (u32)(phy_reg << 16);
194
195 ret_val = e1e_rphy_locked(hw, MII_PHYSID2, &phy_reg);
196 if (ret_val || (phy_reg == 0xFFFF)) {
197 phy_id = 0;
198 continue;
199 }
200 phy_id |= (u32)(phy_reg & PHY_REVISION_MASK);
201 break;
202 }
203
204 if (hw->phy.id) {
205 if (hw->phy.id == phy_id)
206 return true;
207 } else if (phy_id) {
208 hw->phy.id = phy_id;
209 hw->phy.revision = (u32)(phy_reg & ~PHY_REVISION_MASK);
210 return true;
211 }
212
213 /* In case the PHY needs to be in mdio slow mode,
214 * set slow mode and try to get the PHY id again.
215 */
216 hw->phy.ops.release(hw);
217 ret_val = e1000_set_mdio_slow_mode_hv(hw);
218 if (!ret_val)
219 ret_val = e1000e_get_phy_id(hw);
220 hw->phy.ops.acquire(hw);
221
222 return !ret_val;
223 }
224
225 /**
226 * e1000_init_phy_workarounds_pchlan - PHY initialization workarounds
227 * @hw: pointer to the HW structure
228 *
229 * Workarounds/flow necessary for PHY initialization during driver load
230 * and resume paths.
231 **/
232 static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
233 {
234 u32 mac_reg, fwsm = er32(FWSM);
235 s32 ret_val;
236 u16 phy_reg;
237
238 /* Gate automatic PHY configuration by hardware on managed and
239 * non-managed 82579 and newer adapters.
240 */
241 e1000_gate_hw_phy_config_ich8lan(hw, true);
242
243 ret_val = hw->phy.ops.acquire(hw);
244 if (ret_val) {
245 e_dbg("Failed to initialize PHY flow\n");
246 goto out;
247 }
248
249 /* The MAC-PHY interconnect may be in SMBus mode. If the PHY is
250 * inaccessible and resetting the PHY is not blocked, toggle the
251 * LANPHYPC Value bit to force the interconnect to PCIe mode.
252 */
253 switch (hw->mac.type) {
254 case e1000_pch_lpt:
255 if (e1000_phy_is_accessible_pchlan(hw))
256 break;
257
258 /* Before toggling LANPHYPC, see if PHY is accessible by
259 * forcing MAC to SMBus mode first.
260 */
261 mac_reg = er32(CTRL_EXT);
262 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
263 ew32(CTRL_EXT, mac_reg);
264
265 /* fall-through */
266 case e1000_pch2lan:
267 if (e1000_phy_is_accessible_pchlan(hw)) {
268 if (hw->mac.type == e1000_pch_lpt) {
269 /* Unforce SMBus mode in PHY */
270 e1e_rphy_locked(hw, CV_SMB_CTRL, &phy_reg);
271 phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
272 e1e_wphy_locked(hw, CV_SMB_CTRL, phy_reg);
273
274 /* Unforce SMBus mode in MAC */
275 mac_reg = er32(CTRL_EXT);
276 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
277 ew32(CTRL_EXT, mac_reg);
278 }
279 break;
280 }
281
282 /* fall-through */
283 case e1000_pchlan:
284 if ((hw->mac.type == e1000_pchlan) &&
285 (fwsm & E1000_ICH_FWSM_FW_VALID))
286 break;
287
288 if (hw->phy.ops.check_reset_block(hw)) {
289 e_dbg("Required LANPHYPC toggle blocked by ME\n");
290 break;
291 }
292
293 e_dbg("Toggling LANPHYPC\n");
294
295 /* Set Phy Config Counter to 50msec */
296 mac_reg = er32(FEXTNVM3);
297 mac_reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
298 mac_reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
299 ew32(FEXTNVM3, mac_reg);
300
301 if (hw->mac.type == e1000_pch_lpt) {
302 /* Toggling LANPHYPC brings the PHY out of SMBus mode
303 * So ensure that the MAC is also out of SMBus mode
304 */
305 mac_reg = er32(CTRL_EXT);
306 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
307 ew32(CTRL_EXT, mac_reg);
308 }
309
310 /* Toggle LANPHYPC Value bit */
311 mac_reg = er32(CTRL);
312 mac_reg |= E1000_CTRL_LANPHYPC_OVERRIDE;
313 mac_reg &= ~E1000_CTRL_LANPHYPC_VALUE;
314 ew32(CTRL, mac_reg);
315 e1e_flush();
316 usleep_range(10, 20);
317 mac_reg &= ~E1000_CTRL_LANPHYPC_OVERRIDE;
318 ew32(CTRL, mac_reg);
319 e1e_flush();
320 if (hw->mac.type < e1000_pch_lpt) {
321 msleep(50);
322 } else {
323 u16 count = 20;
324 do {
325 usleep_range(5000, 10000);
326 } while (!(er32(CTRL_EXT) &
327 E1000_CTRL_EXT_LPCD) && count--);
328 }
329 break;
330 default:
331 break;
332 }
333
334 hw->phy.ops.release(hw);
335
336 /* Reset the PHY before any access to it. Doing so, ensures
337 * that the PHY is in a known good state before we read/write
338 * PHY registers. The generic reset is sufficient here,
339 * because we haven't determined the PHY type yet.
340 */
341 ret_val = e1000e_phy_hw_reset_generic(hw);
342
343 out:
344 /* Ungate automatic PHY configuration on non-managed 82579 */
345 if ((hw->mac.type == e1000_pch2lan) &&
346 !(fwsm & E1000_ICH_FWSM_FW_VALID)) {
347 usleep_range(10000, 20000);
348 e1000_gate_hw_phy_config_ich8lan(hw, false);
349 }
350
351 return ret_val;
352 }
353
354 /**
355 * e1000_init_phy_params_pchlan - Initialize PHY function pointers
356 * @hw: pointer to the HW structure
357 *
358 * Initialize family-specific PHY parameters and function pointers.
359 **/
360 static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
361 {
362 struct e1000_phy_info *phy = &hw->phy;
363 s32 ret_val;
364
365 phy->addr = 1;
366 phy->reset_delay_us = 100;
367
368 phy->ops.set_page = e1000_set_page_igp;
369 phy->ops.read_reg = e1000_read_phy_reg_hv;
370 phy->ops.read_reg_locked = e1000_read_phy_reg_hv_locked;
371 phy->ops.read_reg_page = e1000_read_phy_reg_page_hv;
372 phy->ops.set_d0_lplu_state = e1000_set_lplu_state_pchlan;
373 phy->ops.set_d3_lplu_state = e1000_set_lplu_state_pchlan;
374 phy->ops.write_reg = e1000_write_phy_reg_hv;
375 phy->ops.write_reg_locked = e1000_write_phy_reg_hv_locked;
376 phy->ops.write_reg_page = e1000_write_phy_reg_page_hv;
377 phy->ops.power_up = e1000_power_up_phy_copper;
378 phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
379 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
380
381 phy->id = e1000_phy_unknown;
382
383 ret_val = e1000_init_phy_workarounds_pchlan(hw);
384 if (ret_val)
385 return ret_val;
386
387 if (phy->id == e1000_phy_unknown)
388 switch (hw->mac.type) {
389 default:
390 ret_val = e1000e_get_phy_id(hw);
391 if (ret_val)
392 return ret_val;
393 if ((phy->id != 0) && (phy->id != PHY_REVISION_MASK))
394 break;
395 /* fall-through */
396 case e1000_pch2lan:
397 case e1000_pch_lpt:
398 /* In case the PHY needs to be in mdio slow mode,
399 * set slow mode and try to get the PHY id again.
400 */
401 ret_val = e1000_set_mdio_slow_mode_hv(hw);
402 if (ret_val)
403 return ret_val;
404 ret_val = e1000e_get_phy_id(hw);
405 if (ret_val)
406 return ret_val;
407 break;
408 }
409 phy->type = e1000e_get_phy_type_from_id(phy->id);
410
411 switch (phy->type) {
412 case e1000_phy_82577:
413 case e1000_phy_82579:
414 case e1000_phy_i217:
415 phy->ops.check_polarity = e1000_check_polarity_82577;
416 phy->ops.force_speed_duplex =
417 e1000_phy_force_speed_duplex_82577;
418 phy->ops.get_cable_length = e1000_get_cable_length_82577;
419 phy->ops.get_info = e1000_get_phy_info_82577;
420 phy->ops.commit = e1000e_phy_sw_reset;
421 break;
422 case e1000_phy_82578:
423 phy->ops.check_polarity = e1000_check_polarity_m88;
424 phy->ops.force_speed_duplex = e1000e_phy_force_speed_duplex_m88;
425 phy->ops.get_cable_length = e1000e_get_cable_length_m88;
426 phy->ops.get_info = e1000e_get_phy_info_m88;
427 break;
428 default:
429 ret_val = -E1000_ERR_PHY;
430 break;
431 }
432
433 return ret_val;
434 }
435
436 /**
437 * e1000_init_phy_params_ich8lan - Initialize PHY function pointers
438 * @hw: pointer to the HW structure
439 *
440 * Initialize family-specific PHY parameters and function pointers.
441 **/
442 static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
443 {
444 struct e1000_phy_info *phy = &hw->phy;
445 s32 ret_val;
446 u16 i = 0;
447
448 phy->addr = 1;
449 phy->reset_delay_us = 100;
450
451 phy->ops.power_up = e1000_power_up_phy_copper;
452 phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
453
454 /* We may need to do this twice - once for IGP and if that fails,
455 * we'll set BM func pointers and try again
456 */
457 ret_val = e1000e_determine_phy_address(hw);
458 if (ret_val) {
459 phy->ops.write_reg = e1000e_write_phy_reg_bm;
460 phy->ops.read_reg = e1000e_read_phy_reg_bm;
461 ret_val = e1000e_determine_phy_address(hw);
462 if (ret_val) {
463 e_dbg("Cannot determine PHY addr. Erroring out\n");
464 return ret_val;
465 }
466 }
467
468 phy->id = 0;
469 while ((e1000_phy_unknown == e1000e_get_phy_type_from_id(phy->id)) &&
470 (i++ < 100)) {
471 usleep_range(1000, 2000);
472 ret_val = e1000e_get_phy_id(hw);
473 if (ret_val)
474 return ret_val;
475 }
476
477 /* Verify phy id */
478 switch (phy->id) {
479 case IGP03E1000_E_PHY_ID:
480 phy->type = e1000_phy_igp_3;
481 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
482 phy->ops.read_reg_locked = e1000e_read_phy_reg_igp_locked;
483 phy->ops.write_reg_locked = e1000e_write_phy_reg_igp_locked;
484 phy->ops.get_info = e1000e_get_phy_info_igp;
485 phy->ops.check_polarity = e1000_check_polarity_igp;
486 phy->ops.force_speed_duplex = e1000e_phy_force_speed_duplex_igp;
487 break;
488 case IFE_E_PHY_ID:
489 case IFE_PLUS_E_PHY_ID:
490 case IFE_C_E_PHY_ID:
491 phy->type = e1000_phy_ife;
492 phy->autoneg_mask = E1000_ALL_NOT_GIG;
493 phy->ops.get_info = e1000_get_phy_info_ife;
494 phy->ops.check_polarity = e1000_check_polarity_ife;
495 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_ife;
496 break;
497 case BME1000_E_PHY_ID:
498 phy->type = e1000_phy_bm;
499 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
500 phy->ops.read_reg = e1000e_read_phy_reg_bm;
501 phy->ops.write_reg = e1000e_write_phy_reg_bm;
502 phy->ops.commit = e1000e_phy_sw_reset;
503 phy->ops.get_info = e1000e_get_phy_info_m88;
504 phy->ops.check_polarity = e1000_check_polarity_m88;
505 phy->ops.force_speed_duplex = e1000e_phy_force_speed_duplex_m88;
506 break;
507 default:
508 return -E1000_ERR_PHY;
509 break;
510 }
511
512 return 0;
513 }
514
515 /**
516 * e1000_init_nvm_params_ich8lan - Initialize NVM function pointers
517 * @hw: pointer to the HW structure
518 *
519 * Initialize family-specific NVM parameters and function
520 * pointers.
521 **/
522 static s32 e1000_init_nvm_params_ich8lan(struct e1000_hw *hw)
523 {
524 struct e1000_nvm_info *nvm = &hw->nvm;
525 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
526 u32 gfpreg, sector_base_addr, sector_end_addr;
527 u16 i;
528
529 /* Can't read flash registers if the register set isn't mapped. */
530 if (!hw->flash_address) {
531 e_dbg("ERROR: Flash registers not mapped\n");
532 return -E1000_ERR_CONFIG;
533 }
534
535 nvm->type = e1000_nvm_flash_sw;
536
537 gfpreg = er32flash(ICH_FLASH_GFPREG);
538
539 /* sector_X_addr is a "sector"-aligned address (4096 bytes)
540 * Add 1 to sector_end_addr since this sector is included in
541 * the overall size.
542 */
543 sector_base_addr = gfpreg & FLASH_GFPREG_BASE_MASK;
544 sector_end_addr = ((gfpreg >> 16) & FLASH_GFPREG_BASE_MASK) + 1;
545
546 /* flash_base_addr is byte-aligned */
547 nvm->flash_base_addr = sector_base_addr << FLASH_SECTOR_ADDR_SHIFT;
548
549 /* find total size of the NVM, then cut in half since the total
550 * size represents two separate NVM banks.
551 */
552 nvm->flash_bank_size = ((sector_end_addr - sector_base_addr)
553 << FLASH_SECTOR_ADDR_SHIFT);
554 nvm->flash_bank_size /= 2;
555 /* Adjust to word count */
556 nvm->flash_bank_size /= sizeof(u16);
557
558 nvm->word_size = E1000_ICH8_SHADOW_RAM_WORDS;
559
560 /* Clear shadow ram */
561 for (i = 0; i < nvm->word_size; i++) {
562 dev_spec->shadow_ram[i].modified = false;
563 dev_spec->shadow_ram[i].value = 0xFFFF;
564 }
565
566 return 0;
567 }
568
569 /**
570 * e1000_init_mac_params_ich8lan - Initialize MAC function pointers
571 * @hw: pointer to the HW structure
572 *
573 * Initialize family-specific MAC parameters and function
574 * pointers.
575 **/
576 static s32 e1000_init_mac_params_ich8lan(struct e1000_hw *hw)
577 {
578 struct e1000_mac_info *mac = &hw->mac;
579
580 /* Set media type function pointer */
581 hw->phy.media_type = e1000_media_type_copper;
582
583 /* Set mta register count */
584 mac->mta_reg_count = 32;
585 /* Set rar entry count */
586 mac->rar_entry_count = E1000_ICH_RAR_ENTRIES;
587 if (mac->type == e1000_ich8lan)
588 mac->rar_entry_count--;
589 /* FWSM register */
590 mac->has_fwsm = true;
591 /* ARC subsystem not supported */
592 mac->arc_subsystem_valid = false;
593 /* Adaptive IFS supported */
594 mac->adaptive_ifs = true;
595
596 /* LED and other operations */
597 switch (mac->type) {
598 case e1000_ich8lan:
599 case e1000_ich9lan:
600 case e1000_ich10lan:
601 /* check management mode */
602 mac->ops.check_mng_mode = e1000_check_mng_mode_ich8lan;
603 /* ID LED init */
604 mac->ops.id_led_init = e1000e_id_led_init_generic;
605 /* blink LED */
606 mac->ops.blink_led = e1000e_blink_led_generic;
607 /* setup LED */
608 mac->ops.setup_led = e1000e_setup_led_generic;
609 /* cleanup LED */
610 mac->ops.cleanup_led = e1000_cleanup_led_ich8lan;
611 /* turn on/off LED */
612 mac->ops.led_on = e1000_led_on_ich8lan;
613 mac->ops.led_off = e1000_led_off_ich8lan;
614 break;
615 case e1000_pch2lan:
616 mac->rar_entry_count = E1000_PCH2_RAR_ENTRIES;
617 mac->ops.rar_set = e1000_rar_set_pch2lan;
618 /* fall-through */
619 case e1000_pch_lpt:
620 case e1000_pchlan:
621 /* check management mode */
622 mac->ops.check_mng_mode = e1000_check_mng_mode_pchlan;
623 /* ID LED init */
624 mac->ops.id_led_init = e1000_id_led_init_pchlan;
625 /* setup LED */
626 mac->ops.setup_led = e1000_setup_led_pchlan;
627 /* cleanup LED */
628 mac->ops.cleanup_led = e1000_cleanup_led_pchlan;
629 /* turn on/off LED */
630 mac->ops.led_on = e1000_led_on_pchlan;
631 mac->ops.led_off = e1000_led_off_pchlan;
632 break;
633 default:
634 break;
635 }
636
637 if (mac->type == e1000_pch_lpt) {
638 mac->rar_entry_count = E1000_PCH_LPT_RAR_ENTRIES;
639 mac->ops.rar_set = e1000_rar_set_pch_lpt;
640 mac->ops.setup_physical_interface =
641 e1000_setup_copper_link_pch_lpt;
642 }
643
644 /* Enable PCS Lock-loss workaround for ICH8 */
645 if (mac->type == e1000_ich8lan)
646 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, true);
647
648 return 0;
649 }
650
651 /**
652 * __e1000_access_emi_reg_locked - Read/write EMI register
653 * @hw: pointer to the HW structure
654 * @addr: EMI address to program
655 * @data: pointer to value to read/write from/to the EMI address
656 * @read: boolean flag to indicate read or write
657 *
658 * This helper function assumes the SW/FW/HW Semaphore is already acquired.
659 **/
660 static s32 __e1000_access_emi_reg_locked(struct e1000_hw *hw, u16 address,
661 u16 *data, bool read)
662 {
663 s32 ret_val;
664
665 ret_val = e1e_wphy_locked(hw, I82579_EMI_ADDR, address);
666 if (ret_val)
667 return ret_val;
668
669 if (read)
670 ret_val = e1e_rphy_locked(hw, I82579_EMI_DATA, data);
671 else
672 ret_val = e1e_wphy_locked(hw, I82579_EMI_DATA, *data);
673
674 return ret_val;
675 }
676
677 /**
678 * e1000_read_emi_reg_locked - Read Extended Management Interface register
679 * @hw: pointer to the HW structure
680 * @addr: EMI address to program
681 * @data: value to be read from the EMI address
682 *
683 * Assumes the SW/FW/HW Semaphore is already acquired.
684 **/
685 s32 e1000_read_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 *data)
686 {
687 return __e1000_access_emi_reg_locked(hw, addr, data, true);
688 }
689
690 /**
691 * e1000_write_emi_reg_locked - Write Extended Management Interface register
692 * @hw: pointer to the HW structure
693 * @addr: EMI address to program
694 * @data: value to be written to the EMI address
695 *
696 * Assumes the SW/FW/HW Semaphore is already acquired.
697 **/
698 s32 e1000_write_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 data)
699 {
700 return __e1000_access_emi_reg_locked(hw, addr, &data, false);
701 }
702
703 /**
704 * e1000_set_eee_pchlan - Enable/disable EEE support
705 * @hw: pointer to the HW structure
706 *
707 * Enable/disable EEE based on setting in dev_spec structure, the duplex of
708 * the link and the EEE capabilities of the link partner. The LPI Control
709 * register bits will remain set only if/when link is up.
710 **/
711 static s32 e1000_set_eee_pchlan(struct e1000_hw *hw)
712 {
713 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
714 s32 ret_val;
715 u16 lpa, pcs_status, adv, adv_addr, lpi_ctrl, data;
716
717 switch (hw->phy.type) {
718 case e1000_phy_82579:
719 lpa = I82579_EEE_LP_ABILITY;
720 pcs_status = I82579_EEE_PCS_STATUS;
721 adv_addr = I82579_EEE_ADVERTISEMENT;
722 break;
723 case e1000_phy_i217:
724 lpa = I217_EEE_LP_ABILITY;
725 pcs_status = I217_EEE_PCS_STATUS;
726 adv_addr = I217_EEE_ADVERTISEMENT;
727 break;
728 default:
729 return 0;
730 }
731
732 ret_val = hw->phy.ops.acquire(hw);
733 if (ret_val)
734 return ret_val;
735
736 ret_val = e1e_rphy_locked(hw, I82579_LPI_CTRL, &lpi_ctrl);
737 if (ret_val)
738 goto release;
739
740 /* Clear bits that enable EEE in various speeds */
741 lpi_ctrl &= ~I82579_LPI_CTRL_ENABLE_MASK;
742
743 /* Enable EEE if not disabled by user */
744 if (!dev_spec->eee_disable) {
745 /* Save off link partner's EEE ability */
746 ret_val = e1000_read_emi_reg_locked(hw, lpa,
747 &dev_spec->eee_lp_ability);
748 if (ret_val)
749 goto release;
750
751 /* Read EEE advertisement */
752 ret_val = e1000_read_emi_reg_locked(hw, adv_addr, &adv);
753 if (ret_val)
754 goto release;
755
756 /* Enable EEE only for speeds in which the link partner is
757 * EEE capable and for which we advertise EEE.
758 */
759 if (adv & dev_spec->eee_lp_ability & I82579_EEE_1000_SUPPORTED)
760 lpi_ctrl |= I82579_LPI_CTRL_1000_ENABLE;
761
762 if (adv & dev_spec->eee_lp_ability & I82579_EEE_100_SUPPORTED) {
763 e1e_rphy_locked(hw, MII_LPA, &data);
764 if (data & LPA_100FULL)
765 lpi_ctrl |= I82579_LPI_CTRL_100_ENABLE;
766 else
767 /* EEE is not supported in 100Half, so ignore
768 * partner's EEE in 100 ability if full-duplex
769 * is not advertised.
770 */
771 dev_spec->eee_lp_ability &=
772 ~I82579_EEE_100_SUPPORTED;
773 }
774 }
775
776 /* R/Clr IEEE MMD 3.1 bits 11:10 - Tx/Rx LPI Received */
777 ret_val = e1000_read_emi_reg_locked(hw, pcs_status, &data);
778 if (ret_val)
779 goto release;
780
781 ret_val = e1e_wphy_locked(hw, I82579_LPI_CTRL, lpi_ctrl);
782 release:
783 hw->phy.ops.release(hw);
784
785 return ret_val;
786 }
787
788 /**
789 * e1000_k1_workaround_lpt_lp - K1 workaround on Lynxpoint-LP
790 * @hw: pointer to the HW structure
791 * @link: link up bool flag
792 *
793 * When K1 is enabled for 1Gbps, the MAC can miss 2 DMA completion indications
794 * preventing further DMA write requests. Workaround the issue by disabling
795 * the de-assertion of the clock request when in 1Gpbs mode.
796 **/
797 static s32 e1000_k1_workaround_lpt_lp(struct e1000_hw *hw, bool link)
798 {
799 u32 fextnvm6 = er32(FEXTNVM6);
800 s32 ret_val = 0;
801
802 if (link && (er32(STATUS) & E1000_STATUS_SPEED_1000)) {
803 u16 kmrn_reg;
804
805 ret_val = hw->phy.ops.acquire(hw);
806 if (ret_val)
807 return ret_val;
808
809 ret_val =
810 e1000e_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
811 &kmrn_reg);
812 if (ret_val)
813 goto release;
814
815 ret_val =
816 e1000e_write_kmrn_reg_locked(hw,
817 E1000_KMRNCTRLSTA_K1_CONFIG,
818 kmrn_reg &
819 ~E1000_KMRNCTRLSTA_K1_ENABLE);
820 if (ret_val)
821 goto release;
822
823 usleep_range(10, 20);
824
825 ew32(FEXTNVM6, fextnvm6 | E1000_FEXTNVM6_REQ_PLL_CLK);
826
827 ret_val =
828 e1000e_write_kmrn_reg_locked(hw,
829 E1000_KMRNCTRLSTA_K1_CONFIG,
830 kmrn_reg);
831 release:
832 hw->phy.ops.release(hw);
833 } else {
834 /* clear FEXTNVM6 bit 8 on link down or 10/100 */
835 ew32(FEXTNVM6, fextnvm6 & ~E1000_FEXTNVM6_REQ_PLL_CLK);
836 }
837
838 return ret_val;
839 }
840
841 /**
842 * e1000_platform_pm_pch_lpt - Set platform power management values
843 * @hw: pointer to the HW structure
844 * @link: bool indicating link status
845 *
846 * Set the Latency Tolerance Reporting (LTR) values for the "PCIe-like"
847 * GbE MAC in the Lynx Point PCH based on Rx buffer size and link speed
848 * when link is up (which must not exceed the maximum latency supported
849 * by the platform), otherwise specify there is no LTR requirement.
850 * Unlike true-PCIe devices which set the LTR maximum snoop/no-snoop
851 * latencies in the LTR Extended Capability Structure in the PCIe Extended
852 * Capability register set, on this device LTR is set by writing the
853 * equivalent snoop/no-snoop latencies in the LTRV register in the MAC and
854 * set the SEND bit to send an Intel On-chip System Fabric sideband (IOSF-SB)
855 * message to the PMC.
856 **/
857 static s32 e1000_platform_pm_pch_lpt(struct e1000_hw *hw, bool link)
858 {
859 u32 reg = link << (E1000_LTRV_REQ_SHIFT + E1000_LTRV_NOSNOOP_SHIFT) |
860 link << E1000_LTRV_REQ_SHIFT | E1000_LTRV_SEND;
861 u16 lat_enc = 0; /* latency encoded */
862
863 if (link) {
864 u16 speed, duplex, scale = 0;
865 u16 max_snoop, max_nosnoop;
866 u16 max_ltr_enc; /* max LTR latency encoded */
867 s64 lat_ns; /* latency (ns) */
868 s64 value;
869 u32 rxa;
870
871 if (!hw->adapter->max_frame_size) {
872 e_dbg("max_frame_size not set.\n");
873 return -E1000_ERR_CONFIG;
874 }
875
876 hw->mac.ops.get_link_up_info(hw, &speed, &duplex);
877 if (!speed) {
878 e_dbg("Speed not set.\n");
879 return -E1000_ERR_CONFIG;
880 }
881
882 /* Rx Packet Buffer Allocation size (KB) */
883 rxa = er32(PBA) & E1000_PBA_RXA_MASK;
884
885 /* Determine the maximum latency tolerated by the device.
886 *
887 * Per the PCIe spec, the tolerated latencies are encoded as
888 * a 3-bit encoded scale (only 0-5 are valid) multiplied by
889 * a 10-bit value (0-1023) to provide a range from 1 ns to
890 * 2^25*(2^10-1) ns. The scale is encoded as 0=2^0ns,
891 * 1=2^5ns, 2=2^10ns,...5=2^25ns.
892 */
893 lat_ns = ((s64)rxa * 1024 -
894 (2 * (s64)hw->adapter->max_frame_size)) * 8 * 1000;
895 if (lat_ns < 0)
896 lat_ns = 0;
897 else
898 do_div(lat_ns, speed);
899
900 value = lat_ns;
901 while (value > PCI_LTR_VALUE_MASK) {
902 scale++;
903 value = DIV_ROUND_UP(value, (1 << 5));
904 }
905 if (scale > E1000_LTRV_SCALE_MAX) {
906 e_dbg("Invalid LTR latency scale %d\n", scale);
907 return -E1000_ERR_CONFIG;
908 }
909 lat_enc = (u16)((scale << PCI_LTR_SCALE_SHIFT) | value);
910
911 /* Determine the maximum latency tolerated by the platform */
912 pci_read_config_word(hw->adapter->pdev, E1000_PCI_LTR_CAP_LPT,
913 &max_snoop);
914 pci_read_config_word(hw->adapter->pdev,
915 E1000_PCI_LTR_CAP_LPT + 2, &max_nosnoop);
916 max_ltr_enc = max_t(u16, max_snoop, max_nosnoop);
917
918 if (lat_enc > max_ltr_enc)
919 lat_enc = max_ltr_enc;
920 }
921
922 /* Set Snoop and No-Snoop latencies the same */
923 reg |= lat_enc | (lat_enc << E1000_LTRV_NOSNOOP_SHIFT);
924 ew32(LTRV, reg);
925
926 return 0;
927 }
928
929 /**
930 * e1000_check_for_copper_link_ich8lan - Check for link (Copper)
931 * @hw: pointer to the HW structure
932 *
933 * Checks to see of the link status of the hardware has changed. If a
934 * change in link status has been detected, then we read the PHY registers
935 * to get the current speed/duplex if link exists.
936 **/
937 static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
938 {
939 struct e1000_mac_info *mac = &hw->mac;
940 s32 ret_val;
941 bool link;
942 u16 phy_reg;
943
944 /* We only want to go out to the PHY registers to see if Auto-Neg
945 * has completed and/or if our link status has changed. The
946 * get_link_status flag is set upon receiving a Link Status
947 * Change or Rx Sequence Error interrupt.
948 */
949 if (!mac->get_link_status)
950 return 0;
951
952 /* First we want to see if the MII Status Register reports
953 * link. If so, then we want to get the current speed/duplex
954 * of the PHY.
955 */
956 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
957 if (ret_val)
958 return ret_val;
959
960 if (hw->mac.type == e1000_pchlan) {
961 ret_val = e1000_k1_gig_workaround_hv(hw, link);
962 if (ret_val)
963 return ret_val;
964 }
965
966 /* When connected at 10Mbps half-duplex, 82579 parts are excessively
967 * aggressive resulting in many collisions. To avoid this, increase
968 * the IPG and reduce Rx latency in the PHY.
969 */
970 if ((hw->mac.type == e1000_pch2lan) && link) {
971 u32 reg;
972 reg = er32(STATUS);
973 if (!(reg & (E1000_STATUS_FD | E1000_STATUS_SPEED_MASK))) {
974 reg = er32(TIPG);
975 reg &= ~E1000_TIPG_IPGT_MASK;
976 reg |= 0xFF;
977 ew32(TIPG, reg);
978
979 /* Reduce Rx latency in analog PHY */
980 ret_val = hw->phy.ops.acquire(hw);
981 if (ret_val)
982 return ret_val;
983
984 ret_val =
985 e1000_write_emi_reg_locked(hw, I82579_RX_CONFIG, 0);
986
987 hw->phy.ops.release(hw);
988
989 if (ret_val)
990 return ret_val;
991 }
992 }
993
994 /* Work-around I218 hang issue */
995 if ((hw->adapter->pdev->device == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
996 (hw->adapter->pdev->device == E1000_DEV_ID_PCH_LPTLP_I218_V)) {
997 ret_val = e1000_k1_workaround_lpt_lp(hw, link);
998 if (ret_val)
999 return ret_val;
1000 }
1001
1002 if (hw->mac.type == e1000_pch_lpt) {
1003 /* Set platform power management values for
1004 * Latency Tolerance Reporting (LTR)
1005 */
1006 ret_val = e1000_platform_pm_pch_lpt(hw, link);
1007 if (ret_val)
1008 return ret_val;
1009 }
1010
1011 /* Clear link partner's EEE ability */
1012 hw->dev_spec.ich8lan.eee_lp_ability = 0;
1013
1014 if (!link)
1015 return 0; /* No link detected */
1016
1017 mac->get_link_status = false;
1018
1019 switch (hw->mac.type) {
1020 case e1000_pch2lan:
1021 ret_val = e1000_k1_workaround_lv(hw);
1022 if (ret_val)
1023 return ret_val;
1024 /* fall-thru */
1025 case e1000_pchlan:
1026 if (hw->phy.type == e1000_phy_82578) {
1027 ret_val = e1000_link_stall_workaround_hv(hw);
1028 if (ret_val)
1029 return ret_val;
1030 }
1031
1032 /* Workaround for PCHx parts in half-duplex:
1033 * Set the number of preambles removed from the packet
1034 * when it is passed from the PHY to the MAC to prevent
1035 * the MAC from misinterpreting the packet type.
1036 */
1037 e1e_rphy(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
1038 phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
1039
1040 if ((er32(STATUS) & E1000_STATUS_FD) != E1000_STATUS_FD)
1041 phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
1042
1043 e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
1044 break;
1045 default:
1046 break;
1047 }
1048
1049 /* Check if there was DownShift, must be checked
1050 * immediately after link-up
1051 */
1052 e1000e_check_downshift(hw);
1053
1054 /* Enable/Disable EEE after link up */
1055 ret_val = e1000_set_eee_pchlan(hw);
1056 if (ret_val)
1057 return ret_val;
1058
1059 /* If we are forcing speed/duplex, then we simply return since
1060 * we have already determined whether we have link or not.
1061 */
1062 if (!mac->autoneg)
1063 return -E1000_ERR_CONFIG;
1064
1065 /* Auto-Neg is enabled. Auto Speed Detection takes care
1066 * of MAC speed/duplex configuration. So we only need to
1067 * configure Collision Distance in the MAC.
1068 */
1069 mac->ops.config_collision_dist(hw);
1070
1071 /* Configure Flow Control now that Auto-Neg has completed.
1072 * First, we need to restore the desired flow control
1073 * settings because we may have had to re-autoneg with a
1074 * different link partner.
1075 */
1076 ret_val = e1000e_config_fc_after_link_up(hw);
1077 if (ret_val)
1078 e_dbg("Error configuring flow control\n");
1079
1080 return ret_val;
1081 }
1082
1083 static s32 e1000_get_variants_ich8lan(struct e1000_adapter *adapter)
1084 {
1085 struct e1000_hw *hw = &adapter->hw;
1086 s32 rc;
1087
1088 rc = e1000_init_mac_params_ich8lan(hw);
1089 if (rc)
1090 return rc;
1091
1092 rc = e1000_init_nvm_params_ich8lan(hw);
1093 if (rc)
1094 return rc;
1095
1096 switch (hw->mac.type) {
1097 case e1000_ich8lan:
1098 case e1000_ich9lan:
1099 case e1000_ich10lan:
1100 rc = e1000_init_phy_params_ich8lan(hw);
1101 break;
1102 case e1000_pchlan:
1103 case e1000_pch2lan:
1104 case e1000_pch_lpt:
1105 rc = e1000_init_phy_params_pchlan(hw);
1106 break;
1107 default:
1108 break;
1109 }
1110 if (rc)
1111 return rc;
1112
1113 /* Disable Jumbo Frame support on parts with Intel 10/100 PHY or
1114 * on parts with MACsec enabled in NVM (reflected in CTRL_EXT).
1115 */
1116 if ((adapter->hw.phy.type == e1000_phy_ife) ||
1117 ((adapter->hw.mac.type >= e1000_pch2lan) &&
1118 (!(er32(CTRL_EXT) & E1000_CTRL_EXT_LSECCK)))) {
1119 adapter->flags &= ~FLAG_HAS_JUMBO_FRAMES;
1120 adapter->max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN;
1121
1122 hw->mac.ops.blink_led = NULL;
1123 }
1124
1125 if ((adapter->hw.mac.type == e1000_ich8lan) &&
1126 (adapter->hw.phy.type != e1000_phy_ife))
1127 adapter->flags |= FLAG_LSC_GIG_SPEED_DROP;
1128
1129 /* Enable workaround for 82579 w/ ME enabled */
1130 if ((adapter->hw.mac.type == e1000_pch2lan) &&
1131 (er32(FWSM) & E1000_ICH_FWSM_FW_VALID))
1132 adapter->flags2 |= FLAG2_PCIM2PCI_ARBITER_WA;
1133
1134 return 0;
1135 }
1136
1137 static DEFINE_MUTEX(nvm_mutex);
1138
1139 /**
1140 * e1000_acquire_nvm_ich8lan - Acquire NVM mutex
1141 * @hw: pointer to the HW structure
1142 *
1143 * Acquires the mutex for performing NVM operations.
1144 **/
1145 static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw __always_unused *hw)
1146 {
1147 mutex_lock(&nvm_mutex);
1148
1149 return 0;
1150 }
1151
1152 /**
1153 * e1000_release_nvm_ich8lan - Release NVM mutex
1154 * @hw: pointer to the HW structure
1155 *
1156 * Releases the mutex used while performing NVM operations.
1157 **/
1158 static void e1000_release_nvm_ich8lan(struct e1000_hw __always_unused *hw)
1159 {
1160 mutex_unlock(&nvm_mutex);
1161 }
1162
1163 /**
1164 * e1000_acquire_swflag_ich8lan - Acquire software control flag
1165 * @hw: pointer to the HW structure
1166 *
1167 * Acquires the software control flag for performing PHY and select
1168 * MAC CSR accesses.
1169 **/
1170 static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
1171 {
1172 u32 extcnf_ctrl, timeout = PHY_CFG_TIMEOUT;
1173 s32 ret_val = 0;
1174
1175 if (test_and_set_bit(__E1000_ACCESS_SHARED_RESOURCE,
1176 &hw->adapter->state)) {
1177 e_dbg("contention for Phy access\n");
1178 return -E1000_ERR_PHY;
1179 }
1180
1181 while (timeout) {
1182 extcnf_ctrl = er32(EXTCNF_CTRL);
1183 if (!(extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG))
1184 break;
1185
1186 mdelay(1);
1187 timeout--;
1188 }
1189
1190 if (!timeout) {
1191 e_dbg("SW has already locked the resource.\n");
1192 ret_val = -E1000_ERR_CONFIG;
1193 goto out;
1194 }
1195
1196 timeout = SW_FLAG_TIMEOUT;
1197
1198 extcnf_ctrl |= E1000_EXTCNF_CTRL_SWFLAG;
1199 ew32(EXTCNF_CTRL, extcnf_ctrl);
1200
1201 while (timeout) {
1202 extcnf_ctrl = er32(EXTCNF_CTRL);
1203 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG)
1204 break;
1205
1206 mdelay(1);
1207 timeout--;
1208 }
1209
1210 if (!timeout) {
1211 e_dbg("Failed to acquire the semaphore, FW or HW has it: FWSM=0x%8.8x EXTCNF_CTRL=0x%8.8x)\n",
1212 er32(FWSM), extcnf_ctrl);
1213 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
1214 ew32(EXTCNF_CTRL, extcnf_ctrl);
1215 ret_val = -E1000_ERR_CONFIG;
1216 goto out;
1217 }
1218
1219 out:
1220 if (ret_val)
1221 clear_bit(__E1000_ACCESS_SHARED_RESOURCE, &hw->adapter->state);
1222
1223 return ret_val;
1224 }
1225
1226 /**
1227 * e1000_release_swflag_ich8lan - Release software control flag
1228 * @hw: pointer to the HW structure
1229 *
1230 * Releases the software control flag for performing PHY and select
1231 * MAC CSR accesses.
1232 **/
1233 static void e1000_release_swflag_ich8lan(struct e1000_hw *hw)
1234 {
1235 u32 extcnf_ctrl;
1236
1237 extcnf_ctrl = er32(EXTCNF_CTRL);
1238
1239 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG) {
1240 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
1241 ew32(EXTCNF_CTRL, extcnf_ctrl);
1242 } else {
1243 e_dbg("Semaphore unexpectedly released by sw/fw/hw\n");
1244 }
1245
1246 clear_bit(__E1000_ACCESS_SHARED_RESOURCE, &hw->adapter->state);
1247 }
1248
1249 /**
1250 * e1000_check_mng_mode_ich8lan - Checks management mode
1251 * @hw: pointer to the HW structure
1252 *
1253 * This checks if the adapter has any manageability enabled.
1254 * This is a function pointer entry point only called by read/write
1255 * routines for the PHY and NVM parts.
1256 **/
1257 static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw)
1258 {
1259 u32 fwsm;
1260
1261 fwsm = er32(FWSM);
1262 return ((fwsm & E1000_ICH_FWSM_FW_VALID) &&
1263 ((fwsm & E1000_FWSM_MODE_MASK) ==
1264 (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT)));
1265 }
1266
1267 /**
1268 * e1000_check_mng_mode_pchlan - Checks management mode
1269 * @hw: pointer to the HW structure
1270 *
1271 * This checks if the adapter has iAMT enabled.
1272 * This is a function pointer entry point only called by read/write
1273 * routines for the PHY and NVM parts.
1274 **/
1275 static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw)
1276 {
1277 u32 fwsm;
1278
1279 fwsm = er32(FWSM);
1280 return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
1281 (fwsm & (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
1282 }
1283
1284 /**
1285 * e1000_rar_set_pch2lan - Set receive address register
1286 * @hw: pointer to the HW structure
1287 * @addr: pointer to the receive address
1288 * @index: receive address array register
1289 *
1290 * Sets the receive address array register at index to the address passed
1291 * in by addr. For 82579, RAR[0] is the base address register that is to
1292 * contain the MAC address but RAR[1-6] are reserved for manageability (ME).
1293 * Use SHRA[0-3] in place of those reserved for ME.
1294 **/
1295 static void e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index)
1296 {
1297 u32 rar_low, rar_high;
1298
1299 /* HW expects these in little endian so we reverse the byte order
1300 * from network order (big endian) to little endian
1301 */
1302 rar_low = ((u32)addr[0] |
1303 ((u32)addr[1] << 8) |
1304 ((u32)addr[2] << 16) | ((u32)addr[3] << 24));
1305
1306 rar_high = ((u32)addr[4] | ((u32)addr[5] << 8));
1307
1308 /* If MAC address zero, no need to set the AV bit */
1309 if (rar_low || rar_high)
1310 rar_high |= E1000_RAH_AV;
1311
1312 if (index == 0) {
1313 ew32(RAL(index), rar_low);
1314 e1e_flush();
1315 ew32(RAH(index), rar_high);
1316 e1e_flush();
1317 return;
1318 }
1319
1320 if (index < hw->mac.rar_entry_count) {
1321 s32 ret_val;
1322
1323 ret_val = e1000_acquire_swflag_ich8lan(hw);
1324 if (ret_val)
1325 goto out;
1326
1327 ew32(SHRAL(index - 1), rar_low);
1328 e1e_flush();
1329 ew32(SHRAH(index - 1), rar_high);
1330 e1e_flush();
1331
1332 e1000_release_swflag_ich8lan(hw);
1333
1334 /* verify the register updates */
1335 if ((er32(SHRAL(index - 1)) == rar_low) &&
1336 (er32(SHRAH(index - 1)) == rar_high))
1337 return;
1338
1339 e_dbg("SHRA[%d] might be locked by ME - FWSM=0x%8.8x\n",
1340 (index - 1), er32(FWSM));
1341 }
1342
1343 out:
1344 e_dbg("Failed to write receive address at index %d\n", index);
1345 }
1346
1347 /**
1348 * e1000_rar_set_pch_lpt - Set receive address registers
1349 * @hw: pointer to the HW structure
1350 * @addr: pointer to the receive address
1351 * @index: receive address array register
1352 *
1353 * Sets the receive address register array at index to the address passed
1354 * in by addr. For LPT, RAR[0] is the base address register that is to
1355 * contain the MAC address. SHRA[0-10] are the shared receive address
1356 * registers that are shared between the Host and manageability engine (ME).
1357 **/
1358 static void e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index)
1359 {
1360 u32 rar_low, rar_high;
1361 u32 wlock_mac;
1362
1363 /* HW expects these in little endian so we reverse the byte order
1364 * from network order (big endian) to little endian
1365 */
1366 rar_low = ((u32)addr[0] | ((u32)addr[1] << 8) |
1367 ((u32)addr[2] << 16) | ((u32)addr[3] << 24));
1368
1369 rar_high = ((u32)addr[4] | ((u32)addr[5] << 8));
1370
1371 /* If MAC address zero, no need to set the AV bit */
1372 if (rar_low || rar_high)
1373 rar_high |= E1000_RAH_AV;
1374
1375 if (index == 0) {
1376 ew32(RAL(index), rar_low);
1377 e1e_flush();
1378 ew32(RAH(index), rar_high);
1379 e1e_flush();
1380 return;
1381 }
1382
1383 /* The manageability engine (ME) can lock certain SHRAR registers that
1384 * it is using - those registers are unavailable for use.
1385 */
1386 if (index < hw->mac.rar_entry_count) {
1387 wlock_mac = er32(FWSM) & E1000_FWSM_WLOCK_MAC_MASK;
1388 wlock_mac >>= E1000_FWSM_WLOCK_MAC_SHIFT;
1389
1390 /* Check if all SHRAR registers are locked */
1391 if (wlock_mac == 1)
1392 goto out;
1393
1394 if ((wlock_mac == 0) || (index <= wlock_mac)) {
1395 s32 ret_val;
1396
1397 ret_val = e1000_acquire_swflag_ich8lan(hw);
1398
1399 if (ret_val)
1400 goto out;
1401
1402 ew32(SHRAL_PCH_LPT(index - 1), rar_low);
1403 e1e_flush();
1404 ew32(SHRAH_PCH_LPT(index - 1), rar_high);
1405 e1e_flush();
1406
1407 e1000_release_swflag_ich8lan(hw);
1408
1409 /* verify the register updates */
1410 if ((er32(SHRAL_PCH_LPT(index - 1)) == rar_low) &&
1411 (er32(SHRAH_PCH_LPT(index - 1)) == rar_high))
1412 return;
1413 }
1414 }
1415
1416 out:
1417 e_dbg("Failed to write receive address at index %d\n", index);
1418 }
1419
1420 /**
1421 * e1000_check_reset_block_ich8lan - Check if PHY reset is blocked
1422 * @hw: pointer to the HW structure
1423 *
1424 * Checks if firmware is blocking the reset of the PHY.
1425 * This is a function pointer entry point only called by
1426 * reset routines.
1427 **/
1428 static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
1429 {
1430 u32 fwsm;
1431
1432 fwsm = er32(FWSM);
1433
1434 return (fwsm & E1000_ICH_FWSM_RSPCIPHY) ? 0 : E1000_BLK_PHY_RESET;
1435 }
1436
1437 /**
1438 * e1000_write_smbus_addr - Write SMBus address to PHY needed during Sx states
1439 * @hw: pointer to the HW structure
1440 *
1441 * Assumes semaphore already acquired.
1442 *
1443 **/
1444 static s32 e1000_write_smbus_addr(struct e1000_hw *hw)
1445 {
1446 u16 phy_data;
1447 u32 strap = er32(STRAP);
1448 u32 freq = (strap & E1000_STRAP_SMT_FREQ_MASK) >>
1449 E1000_STRAP_SMT_FREQ_SHIFT;
1450 s32 ret_val;
1451
1452 strap &= E1000_STRAP_SMBUS_ADDRESS_MASK;
1453
1454 ret_val = e1000_read_phy_reg_hv_locked(hw, HV_SMB_ADDR, &phy_data);
1455 if (ret_val)
1456 return ret_val;
1457
1458 phy_data &= ~HV_SMB_ADDR_MASK;
1459 phy_data |= (strap >> E1000_STRAP_SMBUS_ADDRESS_SHIFT);
1460 phy_data |= HV_SMB_ADDR_PEC_EN | HV_SMB_ADDR_VALID;
1461
1462 if (hw->phy.type == e1000_phy_i217) {
1463 /* Restore SMBus frequency */
1464 if (freq--) {
1465 phy_data &= ~HV_SMB_ADDR_FREQ_MASK;
1466 phy_data |= (freq & (1 << 0)) <<
1467 HV_SMB_ADDR_FREQ_LOW_SHIFT;
1468 phy_data |= (freq & (1 << 1)) <<
1469 (HV_SMB_ADDR_FREQ_HIGH_SHIFT - 1);
1470 } else {
1471 e_dbg("Unsupported SMB frequency in PHY\n");
1472 }
1473 }
1474
1475 return e1000_write_phy_reg_hv_locked(hw, HV_SMB_ADDR, phy_data);
1476 }
1477
1478 /**
1479 * e1000_sw_lcd_config_ich8lan - SW-based LCD Configuration
1480 * @hw: pointer to the HW structure
1481 *
1482 * SW should configure the LCD from the NVM extended configuration region
1483 * as a workaround for certain parts.
1484 **/
1485 static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw)
1486 {
1487 struct e1000_phy_info *phy = &hw->phy;
1488 u32 i, data, cnf_size, cnf_base_addr, sw_cfg_mask;
1489 s32 ret_val = 0;
1490 u16 word_addr, reg_data, reg_addr, phy_page = 0;
1491
1492 /* Initialize the PHY from the NVM on ICH platforms. This
1493 * is needed due to an issue where the NVM configuration is
1494 * not properly autoloaded after power transitions.
1495 * Therefore, after each PHY reset, we will load the
1496 * configuration data out of the NVM manually.
1497 */
1498 switch (hw->mac.type) {
1499 case e1000_ich8lan:
1500 if (phy->type != e1000_phy_igp_3)
1501 return ret_val;
1502
1503 if ((hw->adapter->pdev->device == E1000_DEV_ID_ICH8_IGP_AMT) ||
1504 (hw->adapter->pdev->device == E1000_DEV_ID_ICH8_IGP_C)) {
1505 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG;
1506 break;
1507 }
1508 /* Fall-thru */
1509 case e1000_pchlan:
1510 case e1000_pch2lan:
1511 case e1000_pch_lpt:
1512 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG_ICH8M;
1513 break;
1514 default:
1515 return ret_val;
1516 }
1517
1518 ret_val = hw->phy.ops.acquire(hw);
1519 if (ret_val)
1520 return ret_val;
1521
1522 data = er32(FEXTNVM);
1523 if (!(data & sw_cfg_mask))
1524 goto release;
1525
1526 /* Make sure HW does not configure LCD from PHY
1527 * extended configuration before SW configuration
1528 */
1529 data = er32(EXTCNF_CTRL);
1530 if ((hw->mac.type < e1000_pch2lan) &&
1531 (data & E1000_EXTCNF_CTRL_LCD_WRITE_ENABLE))
1532 goto release;
1533
1534 cnf_size = er32(EXTCNF_SIZE);
1535 cnf_size &= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_MASK;
1536 cnf_size >>= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_SHIFT;
1537 if (!cnf_size)
1538 goto release;
1539
1540 cnf_base_addr = data & E1000_EXTCNF_CTRL_EXT_CNF_POINTER_MASK;
1541 cnf_base_addr >>= E1000_EXTCNF_CTRL_EXT_CNF_POINTER_SHIFT;
1542
1543 if (((hw->mac.type == e1000_pchlan) &&
1544 !(data & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)) ||
1545 (hw->mac.type > e1000_pchlan)) {
1546 /* HW configures the SMBus address and LEDs when the
1547 * OEM and LCD Write Enable bits are set in the NVM.
1548 * When both NVM bits are cleared, SW will configure
1549 * them instead.
1550 */
1551 ret_val = e1000_write_smbus_addr(hw);
1552 if (ret_val)
1553 goto release;
1554
1555 data = er32(LEDCTL);
1556 ret_val = e1000_write_phy_reg_hv_locked(hw, HV_LED_CONFIG,
1557 (u16)data);
1558 if (ret_val)
1559 goto release;
1560 }
1561
1562 /* Configure LCD from extended configuration region. */
1563
1564 /* cnf_base_addr is in DWORD */
1565 word_addr = (u16)(cnf_base_addr << 1);
1566
1567 for (i = 0; i < cnf_size; i++) {
1568 ret_val = e1000_read_nvm(hw, (word_addr + i * 2), 1, &reg_data);
1569 if (ret_val)
1570 goto release;
1571
1572 ret_val = e1000_read_nvm(hw, (word_addr + i * 2 + 1),
1573 1, &reg_addr);
1574 if (ret_val)
1575 goto release;
1576
1577 /* Save off the PHY page for future writes. */
1578 if (reg_addr == IGP01E1000_PHY_PAGE_SELECT) {
1579 phy_page = reg_data;
1580 continue;
1581 }
1582
1583 reg_addr &= PHY_REG_MASK;
1584 reg_addr |= phy_page;
1585
1586 ret_val = e1e_wphy_locked(hw, (u32)reg_addr, reg_data);
1587 if (ret_val)
1588 goto release;
1589 }
1590
1591 release:
1592 hw->phy.ops.release(hw);
1593 return ret_val;
1594 }
1595
1596 /**
1597 * e1000_k1_gig_workaround_hv - K1 Si workaround
1598 * @hw: pointer to the HW structure
1599 * @link: link up bool flag
1600 *
1601 * If K1 is enabled for 1Gbps, the MAC might stall when transitioning
1602 * from a lower speed. This workaround disables K1 whenever link is at 1Gig
1603 * If link is down, the function will restore the default K1 setting located
1604 * in the NVM.
1605 **/
1606 static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link)
1607 {
1608 s32 ret_val = 0;
1609 u16 status_reg = 0;
1610 bool k1_enable = hw->dev_spec.ich8lan.nvm_k1_enabled;
1611
1612 if (hw->mac.type != e1000_pchlan)
1613 return 0;
1614
1615 /* Wrap the whole flow with the sw flag */
1616 ret_val = hw->phy.ops.acquire(hw);
1617 if (ret_val)
1618 return ret_val;
1619
1620 /* Disable K1 when link is 1Gbps, otherwise use the NVM setting */
1621 if (link) {
1622 if (hw->phy.type == e1000_phy_82578) {
1623 ret_val = e1e_rphy_locked(hw, BM_CS_STATUS,
1624 &status_reg);
1625 if (ret_val)
1626 goto release;
1627
1628 status_reg &= (BM_CS_STATUS_LINK_UP |
1629 BM_CS_STATUS_RESOLVED |
1630 BM_CS_STATUS_SPEED_MASK);
1631
1632 if (status_reg == (BM_CS_STATUS_LINK_UP |
1633 BM_CS_STATUS_RESOLVED |
1634 BM_CS_STATUS_SPEED_1000))
1635 k1_enable = false;
1636 }
1637
1638 if (hw->phy.type == e1000_phy_82577) {
1639 ret_val = e1e_rphy_locked(hw, HV_M_STATUS, &status_reg);
1640 if (ret_val)
1641 goto release;
1642
1643 status_reg &= (HV_M_STATUS_LINK_UP |
1644 HV_M_STATUS_AUTONEG_COMPLETE |
1645 HV_M_STATUS_SPEED_MASK);
1646
1647 if (status_reg == (HV_M_STATUS_LINK_UP |
1648 HV_M_STATUS_AUTONEG_COMPLETE |
1649 HV_M_STATUS_SPEED_1000))
1650 k1_enable = false;
1651 }
1652
1653 /* Link stall fix for link up */
1654 ret_val = e1e_wphy_locked(hw, PHY_REG(770, 19), 0x0100);
1655 if (ret_val)
1656 goto release;
1657
1658 } else {
1659 /* Link stall fix for link down */
1660 ret_val = e1e_wphy_locked(hw, PHY_REG(770, 19), 0x4100);
1661 if (ret_val)
1662 goto release;
1663 }
1664
1665 ret_val = e1000_configure_k1_ich8lan(hw, k1_enable);
1666
1667 release:
1668 hw->phy.ops.release(hw);
1669
1670 return ret_val;
1671 }
1672
1673 /**
1674 * e1000_configure_k1_ich8lan - Configure K1 power state
1675 * @hw: pointer to the HW structure
1676 * @enable: K1 state to configure
1677 *
1678 * Configure the K1 power state based on the provided parameter.
1679 * Assumes semaphore already acquired.
1680 *
1681 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1682 **/
1683 s32 e1000_configure_k1_ich8lan(struct e1000_hw *hw, bool k1_enable)
1684 {
1685 s32 ret_val;
1686 u32 ctrl_reg = 0;
1687 u32 ctrl_ext = 0;
1688 u32 reg = 0;
1689 u16 kmrn_reg = 0;
1690
1691 ret_val = e1000e_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
1692 &kmrn_reg);
1693 if (ret_val)
1694 return ret_val;
1695
1696 if (k1_enable)
1697 kmrn_reg |= E1000_KMRNCTRLSTA_K1_ENABLE;
1698 else
1699 kmrn_reg &= ~E1000_KMRNCTRLSTA_K1_ENABLE;
1700
1701 ret_val = e1000e_write_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
1702 kmrn_reg);
1703 if (ret_val)
1704 return ret_val;
1705
1706 usleep_range(20, 40);
1707 ctrl_ext = er32(CTRL_EXT);
1708 ctrl_reg = er32(CTRL);
1709
1710 reg = ctrl_reg & ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1711 reg |= E1000_CTRL_FRCSPD;
1712 ew32(CTRL, reg);
1713
1714 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_SPD_BYPS);
1715 e1e_flush();
1716 usleep_range(20, 40);
1717 ew32(CTRL, ctrl_reg);
1718 ew32(CTRL_EXT, ctrl_ext);
1719 e1e_flush();
1720 usleep_range(20, 40);
1721
1722 return 0;
1723 }
1724
1725 /**
1726 * e1000_oem_bits_config_ich8lan - SW-based LCD Configuration
1727 * @hw: pointer to the HW structure
1728 * @d0_state: boolean if entering d0 or d3 device state
1729 *
1730 * SW will configure Gbe Disable and LPLU based on the NVM. The four bits are
1731 * collectively called OEM bits. The OEM Write Enable bit and SW Config bit
1732 * in NVM determines whether HW should configure LPLU and Gbe Disable.
1733 **/
1734 static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state)
1735 {
1736 s32 ret_val = 0;
1737 u32 mac_reg;
1738 u16 oem_reg;
1739
1740 if (hw->mac.type < e1000_pchlan)
1741 return ret_val;
1742
1743 ret_val = hw->phy.ops.acquire(hw);
1744 if (ret_val)
1745 return ret_val;
1746
1747 if (hw->mac.type == e1000_pchlan) {
1748 mac_reg = er32(EXTCNF_CTRL);
1749 if (mac_reg & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)
1750 goto release;
1751 }
1752
1753 mac_reg = er32(FEXTNVM);
1754 if (!(mac_reg & E1000_FEXTNVM_SW_CONFIG_ICH8M))
1755 goto release;
1756
1757 mac_reg = er32(PHY_CTRL);
1758
1759 ret_val = e1e_rphy_locked(hw, HV_OEM_BITS, &oem_reg);
1760 if (ret_val)
1761 goto release;
1762
1763 oem_reg &= ~(HV_OEM_BITS_GBE_DIS | HV_OEM_BITS_LPLU);
1764
1765 if (d0_state) {
1766 if (mac_reg & E1000_PHY_CTRL_GBE_DISABLE)
1767 oem_reg |= HV_OEM_BITS_GBE_DIS;
1768
1769 if (mac_reg & E1000_PHY_CTRL_D0A_LPLU)
1770 oem_reg |= HV_OEM_BITS_LPLU;
1771 } else {
1772 if (mac_reg & (E1000_PHY_CTRL_GBE_DISABLE |
1773 E1000_PHY_CTRL_NOND0A_GBE_DISABLE))
1774 oem_reg |= HV_OEM_BITS_GBE_DIS;
1775
1776 if (mac_reg & (E1000_PHY_CTRL_D0A_LPLU |
1777 E1000_PHY_CTRL_NOND0A_LPLU))
1778 oem_reg |= HV_OEM_BITS_LPLU;
1779 }
1780
1781 /* Set Restart auto-neg to activate the bits */
1782 if ((d0_state || (hw->mac.type != e1000_pchlan)) &&
1783 !hw->phy.ops.check_reset_block(hw))
1784 oem_reg |= HV_OEM_BITS_RESTART_AN;
1785
1786 ret_val = e1e_wphy_locked(hw, HV_OEM_BITS, oem_reg);
1787
1788 release:
1789 hw->phy.ops.release(hw);
1790
1791 return ret_val;
1792 }
1793
1794 /**
1795 * e1000_set_mdio_slow_mode_hv - Set slow MDIO access mode
1796 * @hw: pointer to the HW structure
1797 **/
1798 static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw)
1799 {
1800 s32 ret_val;
1801 u16 data;
1802
1803 ret_val = e1e_rphy(hw, HV_KMRN_MODE_CTRL, &data);
1804 if (ret_val)
1805 return ret_val;
1806
1807 data |= HV_KMRN_MDIO_SLOW;
1808
1809 ret_val = e1e_wphy(hw, HV_KMRN_MODE_CTRL, data);
1810
1811 return ret_val;
1812 }
1813
1814 /**
1815 * e1000_hv_phy_workarounds_ich8lan - A series of Phy workarounds to be
1816 * done after every PHY reset.
1817 **/
1818 static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw)
1819 {
1820 s32 ret_val = 0;
1821 u16 phy_data;
1822
1823 if (hw->mac.type != e1000_pchlan)
1824 return 0;
1825
1826 /* Set MDIO slow mode before any other MDIO access */
1827 if (hw->phy.type == e1000_phy_82577) {
1828 ret_val = e1000_set_mdio_slow_mode_hv(hw);
1829 if (ret_val)
1830 return ret_val;
1831 }
1832
1833 if (((hw->phy.type == e1000_phy_82577) &&
1834 ((hw->phy.revision == 1) || (hw->phy.revision == 2))) ||
1835 ((hw->phy.type == e1000_phy_82578) && (hw->phy.revision == 1))) {
1836 /* Disable generation of early preamble */
1837 ret_val = e1e_wphy(hw, PHY_REG(769, 25), 0x4431);
1838 if (ret_val)
1839 return ret_val;
1840
1841 /* Preamble tuning for SSC */
1842 ret_val = e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, 0xA204);
1843 if (ret_val)
1844 return ret_val;
1845 }
1846
1847 if (hw->phy.type == e1000_phy_82578) {
1848 /* Return registers to default by doing a soft reset then
1849 * writing 0x3140 to the control register.
1850 */
1851 if (hw->phy.revision < 2) {
1852 e1000e_phy_sw_reset(hw);
1853 ret_val = e1e_wphy(hw, MII_BMCR, 0x3140);
1854 }
1855 }
1856
1857 /* Select page 0 */
1858 ret_val = hw->phy.ops.acquire(hw);
1859 if (ret_val)
1860 return ret_val;
1861
1862 hw->phy.addr = 1;
1863 ret_val = e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 0);
1864 hw->phy.ops.release(hw);
1865 if (ret_val)
1866 return ret_val;
1867
1868 /* Configure the K1 Si workaround during phy reset assuming there is
1869 * link so that it disables K1 if link is in 1Gbps.
1870 */
1871 ret_val = e1000_k1_gig_workaround_hv(hw, true);
1872 if (ret_val)
1873 return ret_val;
1874
1875 /* Workaround for link disconnects on a busy hub in half duplex */
1876 ret_val = hw->phy.ops.acquire(hw);
1877 if (ret_val)
1878 return ret_val;
1879 ret_val = e1e_rphy_locked(hw, BM_PORT_GEN_CFG, &phy_data);
1880 if (ret_val)
1881 goto release;
1882 ret_val = e1e_wphy_locked(hw, BM_PORT_GEN_CFG, phy_data & 0x00FF);
1883 if (ret_val)
1884 goto release;
1885
1886 /* set MSE higher to enable link to stay up when noise is high */
1887 ret_val = e1000_write_emi_reg_locked(hw, I82577_MSE_THRESHOLD, 0x0034);
1888 release:
1889 hw->phy.ops.release(hw);
1890
1891 return ret_val;
1892 }
1893
1894 /**
1895 * e1000_copy_rx_addrs_to_phy_ich8lan - Copy Rx addresses from MAC to PHY
1896 * @hw: pointer to the HW structure
1897 **/
1898 void e1000_copy_rx_addrs_to_phy_ich8lan(struct e1000_hw *hw)
1899 {
1900 u32 mac_reg;
1901 u16 i, phy_reg = 0;
1902 s32 ret_val;
1903
1904 ret_val = hw->phy.ops.acquire(hw);
1905 if (ret_val)
1906 return;
1907 ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
1908 if (ret_val)
1909 goto release;
1910
1911 /* Copy both RAL/H (rar_entry_count) and SHRAL/H (+4) to PHY */
1912 for (i = 0; i < (hw->mac.rar_entry_count + 4); i++) {
1913 mac_reg = er32(RAL(i));
1914 hw->phy.ops.write_reg_page(hw, BM_RAR_L(i),
1915 (u16)(mac_reg & 0xFFFF));
1916 hw->phy.ops.write_reg_page(hw, BM_RAR_M(i),
1917 (u16)((mac_reg >> 16) & 0xFFFF));
1918
1919 mac_reg = er32(RAH(i));
1920 hw->phy.ops.write_reg_page(hw, BM_RAR_H(i),
1921 (u16)(mac_reg & 0xFFFF));
1922 hw->phy.ops.write_reg_page(hw, BM_RAR_CTRL(i),
1923 (u16)((mac_reg & E1000_RAH_AV)
1924 >> 16));
1925 }
1926
1927 e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
1928
1929 release:
1930 hw->phy.ops.release(hw);
1931 }
1932
1933 /**
1934 * e1000_lv_jumbo_workaround_ich8lan - required for jumbo frame operation
1935 * with 82579 PHY
1936 * @hw: pointer to the HW structure
1937 * @enable: flag to enable/disable workaround when enabling/disabling jumbos
1938 **/
1939 s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable)
1940 {
1941 s32 ret_val = 0;
1942 u16 phy_reg, data;
1943 u32 mac_reg;
1944 u16 i;
1945
1946 if (hw->mac.type < e1000_pch2lan)
1947 return 0;
1948
1949 /* disable Rx path while enabling/disabling workaround */
1950 e1e_rphy(hw, PHY_REG(769, 20), &phy_reg);
1951 ret_val = e1e_wphy(hw, PHY_REG(769, 20), phy_reg | (1 << 14));
1952 if (ret_val)
1953 return ret_val;
1954
1955 if (enable) {
1956 /* Write Rx addresses (rar_entry_count for RAL/H, +4 for
1957 * SHRAL/H) and initial CRC values to the MAC
1958 */
1959 for (i = 0; i < (hw->mac.rar_entry_count + 4); i++) {
1960 u8 mac_addr[ETH_ALEN] = { 0 };
1961 u32 addr_high, addr_low;
1962
1963 addr_high = er32(RAH(i));
1964 if (!(addr_high & E1000_RAH_AV))
1965 continue;
1966 addr_low = er32(RAL(i));
1967 mac_addr[0] = (addr_low & 0xFF);
1968 mac_addr[1] = ((addr_low >> 8) & 0xFF);
1969 mac_addr[2] = ((addr_low >> 16) & 0xFF);
1970 mac_addr[3] = ((addr_low >> 24) & 0xFF);
1971 mac_addr[4] = (addr_high & 0xFF);
1972 mac_addr[5] = ((addr_high >> 8) & 0xFF);
1973
1974 ew32(PCH_RAICC(i), ~ether_crc_le(ETH_ALEN, mac_addr));
1975 }
1976
1977 /* Write Rx addresses to the PHY */
1978 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
1979
1980 /* Enable jumbo frame workaround in the MAC */
1981 mac_reg = er32(FFLT_DBG);
1982 mac_reg &= ~(1 << 14);
1983 mac_reg |= (7 << 15);
1984 ew32(FFLT_DBG, mac_reg);
1985
1986 mac_reg = er32(RCTL);
1987 mac_reg |= E1000_RCTL_SECRC;
1988 ew32(RCTL, mac_reg);
1989
1990 ret_val = e1000e_read_kmrn_reg(hw,
1991 E1000_KMRNCTRLSTA_CTRL_OFFSET,
1992 &data);
1993 if (ret_val)
1994 return ret_val;
1995 ret_val = e1000e_write_kmrn_reg(hw,
1996 E1000_KMRNCTRLSTA_CTRL_OFFSET,
1997 data | (1 << 0));
1998 if (ret_val)
1999 return ret_val;
2000 ret_val = e1000e_read_kmrn_reg(hw,
2001 E1000_KMRNCTRLSTA_HD_CTRL,
2002 &data);
2003 if (ret_val)
2004 return ret_val;
2005 data &= ~(0xF << 8);
2006 data |= (0xB << 8);
2007 ret_val = e1000e_write_kmrn_reg(hw,
2008 E1000_KMRNCTRLSTA_HD_CTRL,
2009 data);
2010 if (ret_val)
2011 return ret_val;
2012
2013 /* Enable jumbo frame workaround in the PHY */
2014 e1e_rphy(hw, PHY_REG(769, 23), &data);
2015 data &= ~(0x7F << 5);
2016 data |= (0x37 << 5);
2017 ret_val = e1e_wphy(hw, PHY_REG(769, 23), data);
2018 if (ret_val)
2019 return ret_val;
2020 e1e_rphy(hw, PHY_REG(769, 16), &data);
2021 data &= ~(1 << 13);
2022 ret_val = e1e_wphy(hw, PHY_REG(769, 16), data);
2023 if (ret_val)
2024 return ret_val;
2025 e1e_rphy(hw, PHY_REG(776, 20), &data);
2026 data &= ~(0x3FF << 2);
2027 data |= (0x1A << 2);
2028 ret_val = e1e_wphy(hw, PHY_REG(776, 20), data);
2029 if (ret_val)
2030 return ret_val;
2031 ret_val = e1e_wphy(hw, PHY_REG(776, 23), 0xF100);
2032 if (ret_val)
2033 return ret_val;
2034 e1e_rphy(hw, HV_PM_CTRL, &data);
2035 ret_val = e1e_wphy(hw, HV_PM_CTRL, data | (1 << 10));
2036 if (ret_val)
2037 return ret_val;
2038 } else {
2039 /* Write MAC register values back to h/w defaults */
2040 mac_reg = er32(FFLT_DBG);
2041 mac_reg &= ~(0xF << 14);
2042 ew32(FFLT_DBG, mac_reg);
2043
2044 mac_reg = er32(RCTL);
2045 mac_reg &= ~E1000_RCTL_SECRC;
2046 ew32(RCTL, mac_reg);
2047
2048 ret_val = e1000e_read_kmrn_reg(hw,
2049 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2050 &data);
2051 if (ret_val)
2052 return ret_val;
2053 ret_val = e1000e_write_kmrn_reg(hw,
2054 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2055 data & ~(1 << 0));
2056 if (ret_val)
2057 return ret_val;
2058 ret_val = e1000e_read_kmrn_reg(hw,
2059 E1000_KMRNCTRLSTA_HD_CTRL,
2060 &data);
2061 if (ret_val)
2062 return ret_val;
2063 data &= ~(0xF << 8);
2064 data |= (0xB << 8);
2065 ret_val = e1000e_write_kmrn_reg(hw,
2066 E1000_KMRNCTRLSTA_HD_CTRL,
2067 data);
2068 if (ret_val)
2069 return ret_val;
2070
2071 /* Write PHY register values back to h/w defaults */
2072 e1e_rphy(hw, PHY_REG(769, 23), &data);
2073 data &= ~(0x7F << 5);
2074 ret_val = e1e_wphy(hw, PHY_REG(769, 23), data);
2075 if (ret_val)
2076 return ret_val;
2077 e1e_rphy(hw, PHY_REG(769, 16), &data);
2078 data |= (1 << 13);
2079 ret_val = e1e_wphy(hw, PHY_REG(769, 16), data);
2080 if (ret_val)
2081 return ret_val;
2082 e1e_rphy(hw, PHY_REG(776, 20), &data);
2083 data &= ~(0x3FF << 2);
2084 data |= (0x8 << 2);
2085 ret_val = e1e_wphy(hw, PHY_REG(776, 20), data);
2086 if (ret_val)
2087 return ret_val;
2088 ret_val = e1e_wphy(hw, PHY_REG(776, 23), 0x7E00);
2089 if (ret_val)
2090 return ret_val;
2091 e1e_rphy(hw, HV_PM_CTRL, &data);
2092 ret_val = e1e_wphy(hw, HV_PM_CTRL, data & ~(1 << 10));
2093 if (ret_val)
2094 return ret_val;
2095 }
2096
2097 /* re-enable Rx path after enabling/disabling workaround */
2098 return e1e_wphy(hw, PHY_REG(769, 20), phy_reg & ~(1 << 14));
2099 }
2100
2101 /**
2102 * e1000_lv_phy_workarounds_ich8lan - A series of Phy workarounds to be
2103 * done after every PHY reset.
2104 **/
2105 static s32 e1000_lv_phy_workarounds_ich8lan(struct e1000_hw *hw)
2106 {
2107 s32 ret_val = 0;
2108
2109 if (hw->mac.type != e1000_pch2lan)
2110 return 0;
2111
2112 /* Set MDIO slow mode before any other MDIO access */
2113 ret_val = e1000_set_mdio_slow_mode_hv(hw);
2114 if (ret_val)
2115 return ret_val;
2116
2117 ret_val = hw->phy.ops.acquire(hw);
2118 if (ret_val)
2119 return ret_val;
2120 /* set MSE higher to enable link to stay up when noise is high */
2121 ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_THRESHOLD, 0x0034);
2122 if (ret_val)
2123 goto release;
2124 /* drop link after 5 times MSE threshold was reached */
2125 ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_LINK_DOWN, 0x0005);
2126 release:
2127 hw->phy.ops.release(hw);
2128
2129 return ret_val;
2130 }
2131
2132 /**
2133 * e1000_k1_gig_workaround_lv - K1 Si workaround
2134 * @hw: pointer to the HW structure
2135 *
2136 * Workaround to set the K1 beacon duration for 82579 parts
2137 **/
2138 static s32 e1000_k1_workaround_lv(struct e1000_hw *hw)
2139 {
2140 s32 ret_val = 0;
2141 u16 status_reg = 0;
2142 u32 mac_reg;
2143 u16 phy_reg;
2144
2145 if (hw->mac.type != e1000_pch2lan)
2146 return 0;
2147
2148 /* Set K1 beacon duration based on 1Gbps speed or otherwise */
2149 ret_val = e1e_rphy(hw, HV_M_STATUS, &status_reg);
2150 if (ret_val)
2151 return ret_val;
2152
2153 if ((status_reg & (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE))
2154 == (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE)) {
2155 mac_reg = er32(FEXTNVM4);
2156 mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
2157
2158 ret_val = e1e_rphy(hw, I82579_LPI_CTRL, &phy_reg);
2159 if (ret_val)
2160 return ret_val;
2161
2162 if (status_reg & HV_M_STATUS_SPEED_1000) {
2163 u16 pm_phy_reg;
2164
2165 mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC;
2166 phy_reg &= ~I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT;
2167 /* LV 1G Packet drop issue wa */
2168 ret_val = e1e_rphy(hw, HV_PM_CTRL, &pm_phy_reg);
2169 if (ret_val)
2170 return ret_val;
2171 pm_phy_reg &= ~HV_PM_CTRL_PLL_STOP_IN_K1_GIGA;
2172 ret_val = e1e_wphy(hw, HV_PM_CTRL, pm_phy_reg);
2173 if (ret_val)
2174 return ret_val;
2175 } else {
2176 mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
2177 phy_reg |= I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT;
2178 }
2179 ew32(FEXTNVM4, mac_reg);
2180 ret_val = e1e_wphy(hw, I82579_LPI_CTRL, phy_reg);
2181 }
2182
2183 return ret_val;
2184 }
2185
2186 /**
2187 * e1000_gate_hw_phy_config_ich8lan - disable PHY config via hardware
2188 * @hw: pointer to the HW structure
2189 * @gate: boolean set to true to gate, false to ungate
2190 *
2191 * Gate/ungate the automatic PHY configuration via hardware; perform
2192 * the configuration via software instead.
2193 **/
2194 static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate)
2195 {
2196 u32 extcnf_ctrl;
2197
2198 if (hw->mac.type < e1000_pch2lan)
2199 return;
2200
2201 extcnf_ctrl = er32(EXTCNF_CTRL);
2202
2203 if (gate)
2204 extcnf_ctrl |= E1000_EXTCNF_CTRL_GATE_PHY_CFG;
2205 else
2206 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_GATE_PHY_CFG;
2207
2208 ew32(EXTCNF_CTRL, extcnf_ctrl);
2209 }
2210
2211 /**
2212 * e1000_lan_init_done_ich8lan - Check for PHY config completion
2213 * @hw: pointer to the HW structure
2214 *
2215 * Check the appropriate indication the MAC has finished configuring the
2216 * PHY after a software reset.
2217 **/
2218 static void e1000_lan_init_done_ich8lan(struct e1000_hw *hw)
2219 {
2220 u32 data, loop = E1000_ICH8_LAN_INIT_TIMEOUT;
2221
2222 /* Wait for basic configuration completes before proceeding */
2223 do {
2224 data = er32(STATUS);
2225 data &= E1000_STATUS_LAN_INIT_DONE;
2226 usleep_range(100, 200);
2227 } while ((!data) && --loop);
2228
2229 /* If basic configuration is incomplete before the above loop
2230 * count reaches 0, loading the configuration from NVM will
2231 * leave the PHY in a bad state possibly resulting in no link.
2232 */
2233 if (loop == 0)
2234 e_dbg("LAN_INIT_DONE not set, increase timeout\n");
2235
2236 /* Clear the Init Done bit for the next init event */
2237 data = er32(STATUS);
2238 data &= ~E1000_STATUS_LAN_INIT_DONE;
2239 ew32(STATUS, data);
2240 }
2241
2242 /**
2243 * e1000_post_phy_reset_ich8lan - Perform steps required after a PHY reset
2244 * @hw: pointer to the HW structure
2245 **/
2246 static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
2247 {
2248 s32 ret_val = 0;
2249 u16 reg;
2250
2251 if (hw->phy.ops.check_reset_block(hw))
2252 return 0;
2253
2254 /* Allow time for h/w to get to quiescent state after reset */
2255 usleep_range(10000, 20000);
2256
2257 /* Perform any necessary post-reset workarounds */
2258 switch (hw->mac.type) {
2259 case e1000_pchlan:
2260 ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
2261 if (ret_val)
2262 return ret_val;
2263 break;
2264 case e1000_pch2lan:
2265 ret_val = e1000_lv_phy_workarounds_ich8lan(hw);
2266 if (ret_val)
2267 return ret_val;
2268 break;
2269 default:
2270 break;
2271 }
2272
2273 /* Clear the host wakeup bit after lcd reset */
2274 if (hw->mac.type >= e1000_pchlan) {
2275 e1e_rphy(hw, BM_PORT_GEN_CFG, &reg);
2276 reg &= ~BM_WUC_HOST_WU_BIT;
2277 e1e_wphy(hw, BM_PORT_GEN_CFG, reg);
2278 }
2279
2280 /* Configure the LCD with the extended configuration region in NVM */
2281 ret_val = e1000_sw_lcd_config_ich8lan(hw);
2282 if (ret_val)
2283 return ret_val;
2284
2285 /* Configure the LCD with the OEM bits in NVM */
2286 ret_val = e1000_oem_bits_config_ich8lan(hw, true);
2287
2288 if (hw->mac.type == e1000_pch2lan) {
2289 /* Ungate automatic PHY configuration on non-managed 82579 */
2290 if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
2291 usleep_range(10000, 20000);
2292 e1000_gate_hw_phy_config_ich8lan(hw, false);
2293 }
2294
2295 /* Set EEE LPI Update Timer to 200usec */
2296 ret_val = hw->phy.ops.acquire(hw);
2297 if (ret_val)
2298 return ret_val;
2299 ret_val = e1000_write_emi_reg_locked(hw,
2300 I82579_LPI_UPDATE_TIMER,
2301 0x1387);
2302 hw->phy.ops.release(hw);
2303 }
2304
2305 return ret_val;
2306 }
2307
2308 /**
2309 * e1000_phy_hw_reset_ich8lan - Performs a PHY reset
2310 * @hw: pointer to the HW structure
2311 *
2312 * Resets the PHY
2313 * This is a function pointer entry point called by drivers
2314 * or other shared routines.
2315 **/
2316 static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw)
2317 {
2318 s32 ret_val = 0;
2319
2320 /* Gate automatic PHY configuration by hardware on non-managed 82579 */
2321 if ((hw->mac.type == e1000_pch2lan) &&
2322 !(er32(FWSM) & E1000_ICH_FWSM_FW_VALID))
2323 e1000_gate_hw_phy_config_ich8lan(hw, true);
2324
2325 ret_val = e1000e_phy_hw_reset_generic(hw);
2326 if (ret_val)
2327 return ret_val;
2328
2329 return e1000_post_phy_reset_ich8lan(hw);
2330 }
2331
2332 /**
2333 * e1000_set_lplu_state_pchlan - Set Low Power Link Up state
2334 * @hw: pointer to the HW structure
2335 * @active: true to enable LPLU, false to disable
2336 *
2337 * Sets the LPLU state according to the active flag. For PCH, if OEM write
2338 * bit are disabled in the NVM, writing the LPLU bits in the MAC will not set
2339 * the phy speed. This function will manually set the LPLU bit and restart
2340 * auto-neg as hw would do. D3 and D0 LPLU will call the same function
2341 * since it configures the same bit.
2342 **/
2343 static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active)
2344 {
2345 s32 ret_val;
2346 u16 oem_reg;
2347
2348 ret_val = e1e_rphy(hw, HV_OEM_BITS, &oem_reg);
2349 if (ret_val)
2350 return ret_val;
2351
2352 if (active)
2353 oem_reg |= HV_OEM_BITS_LPLU;
2354 else
2355 oem_reg &= ~HV_OEM_BITS_LPLU;
2356
2357 if (!hw->phy.ops.check_reset_block(hw))
2358 oem_reg |= HV_OEM_BITS_RESTART_AN;
2359
2360 return e1e_wphy(hw, HV_OEM_BITS, oem_reg);
2361 }
2362
2363 /**
2364 * e1000_set_d0_lplu_state_ich8lan - Set Low Power Linkup D0 state
2365 * @hw: pointer to the HW structure
2366 * @active: true to enable LPLU, false to disable
2367 *
2368 * Sets the LPLU D0 state according to the active flag. When
2369 * activating LPLU this function also disables smart speed
2370 * and vice versa. LPLU will not be activated unless the
2371 * device autonegotiation advertisement meets standards of
2372 * either 10 or 10/100 or 10/100/1000 at all duplexes.
2373 * This is a function pointer entry point only called by
2374 * PHY setup routines.
2375 **/
2376 static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
2377 {
2378 struct e1000_phy_info *phy = &hw->phy;
2379 u32 phy_ctrl;
2380 s32 ret_val = 0;
2381 u16 data;
2382
2383 if (phy->type == e1000_phy_ife)
2384 return 0;
2385
2386 phy_ctrl = er32(PHY_CTRL);
2387
2388 if (active) {
2389 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
2390 ew32(PHY_CTRL, phy_ctrl);
2391
2392 if (phy->type != e1000_phy_igp_3)
2393 return 0;
2394
2395 /* Call gig speed drop workaround on LPLU before accessing
2396 * any PHY registers
2397 */
2398 if (hw->mac.type == e1000_ich8lan)
2399 e1000e_gig_downshift_workaround_ich8lan(hw);
2400
2401 /* When LPLU is enabled, we should disable SmartSpeed */
2402 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
2403 if (ret_val)
2404 return ret_val;
2405 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2406 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
2407 if (ret_val)
2408 return ret_val;
2409 } else {
2410 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
2411 ew32(PHY_CTRL, phy_ctrl);
2412
2413 if (phy->type != e1000_phy_igp_3)
2414 return 0;
2415
2416 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
2417 * during Dx states where the power conservation is most
2418 * important. During driver activity we should enable
2419 * SmartSpeed, so performance is maintained.
2420 */
2421 if (phy->smart_speed == e1000_smart_speed_on) {
2422 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2423 &data);
2424 if (ret_val)
2425 return ret_val;
2426
2427 data |= IGP01E1000_PSCFR_SMART_SPEED;
2428 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2429 data);
2430 if (ret_val)
2431 return ret_val;
2432 } else if (phy->smart_speed == e1000_smart_speed_off) {
2433 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2434 &data);
2435 if (ret_val)
2436 return ret_val;
2437
2438 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2439 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2440 data);
2441 if (ret_val)
2442 return ret_val;
2443 }
2444 }
2445
2446 return 0;
2447 }
2448
2449 /**
2450 * e1000_set_d3_lplu_state_ich8lan - Set Low Power Linkup D3 state
2451 * @hw: pointer to the HW structure
2452 * @active: true to enable LPLU, false to disable
2453 *
2454 * Sets the LPLU D3 state according to the active flag. When
2455 * activating LPLU this function also disables smart speed
2456 * and vice versa. LPLU will not be activated unless the
2457 * device autonegotiation advertisement meets standards of
2458 * either 10 or 10/100 or 10/100/1000 at all duplexes.
2459 * This is a function pointer entry point only called by
2460 * PHY setup routines.
2461 **/
2462 static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
2463 {
2464 struct e1000_phy_info *phy = &hw->phy;
2465 u32 phy_ctrl;
2466 s32 ret_val = 0;
2467 u16 data;
2468
2469 phy_ctrl = er32(PHY_CTRL);
2470
2471 if (!active) {
2472 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
2473 ew32(PHY_CTRL, phy_ctrl);
2474
2475 if (phy->type != e1000_phy_igp_3)
2476 return 0;
2477
2478 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
2479 * during Dx states where the power conservation is most
2480 * important. During driver activity we should enable
2481 * SmartSpeed, so performance is maintained.
2482 */
2483 if (phy->smart_speed == e1000_smart_speed_on) {
2484 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2485 &data);
2486 if (ret_val)
2487 return ret_val;
2488
2489 data |= IGP01E1000_PSCFR_SMART_SPEED;
2490 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2491 data);
2492 if (ret_val)
2493 return ret_val;
2494 } else if (phy->smart_speed == e1000_smart_speed_off) {
2495 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2496 &data);
2497 if (ret_val)
2498 return ret_val;
2499
2500 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2501 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
2502 data);
2503 if (ret_val)
2504 return ret_val;
2505 }
2506 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
2507 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
2508 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
2509 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
2510 ew32(PHY_CTRL, phy_ctrl);
2511
2512 if (phy->type != e1000_phy_igp_3)
2513 return 0;
2514
2515 /* Call gig speed drop workaround on LPLU before accessing
2516 * any PHY registers
2517 */
2518 if (hw->mac.type == e1000_ich8lan)
2519 e1000e_gig_downshift_workaround_ich8lan(hw);
2520
2521 /* When LPLU is enabled, we should disable SmartSpeed */
2522 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
2523 if (ret_val)
2524 return ret_val;
2525
2526 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2527 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
2528 }
2529
2530 return ret_val;
2531 }
2532
2533 /**
2534 * e1000_valid_nvm_bank_detect_ich8lan - finds out the valid bank 0 or 1
2535 * @hw: pointer to the HW structure
2536 * @bank: pointer to the variable that returns the active bank
2537 *
2538 * Reads signature byte from the NVM using the flash access registers.
2539 * Word 0x13 bits 15:14 = 10b indicate a valid signature for that bank.
2540 **/
2541 static s32 e1000_valid_nvm_bank_detect_ich8lan(struct e1000_hw *hw, u32 *bank)
2542 {
2543 u32 eecd;
2544 struct e1000_nvm_info *nvm = &hw->nvm;
2545 u32 bank1_offset = nvm->flash_bank_size * sizeof(u16);
2546 u32 act_offset = E1000_ICH_NVM_SIG_WORD * 2 + 1;
2547 u8 sig_byte = 0;
2548 s32 ret_val;
2549
2550 switch (hw->mac.type) {
2551 case e1000_ich8lan:
2552 case e1000_ich9lan:
2553 eecd = er32(EECD);
2554 if ((eecd & E1000_EECD_SEC1VAL_VALID_MASK) ==
2555 E1000_EECD_SEC1VAL_VALID_MASK) {
2556 if (eecd & E1000_EECD_SEC1VAL)
2557 *bank = 1;
2558 else
2559 *bank = 0;
2560
2561 return 0;
2562 }
2563 e_dbg("Unable to determine valid NVM bank via EEC - reading flash signature\n");
2564 /* fall-thru */
2565 default:
2566 /* set bank to 0 in case flash read fails */
2567 *bank = 0;
2568
2569 /* Check bank 0 */
2570 ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset,
2571 &sig_byte);
2572 if (ret_val)
2573 return ret_val;
2574 if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
2575 E1000_ICH_NVM_SIG_VALUE) {
2576 *bank = 0;
2577 return 0;
2578 }
2579
2580 /* Check bank 1 */
2581 ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset +
2582 bank1_offset,
2583 &sig_byte);
2584 if (ret_val)
2585 return ret_val;
2586 if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
2587 E1000_ICH_NVM_SIG_VALUE) {
2588 *bank = 1;
2589 return 0;
2590 }
2591
2592 e_dbg("ERROR: No valid NVM bank present\n");
2593 return -E1000_ERR_NVM;
2594 }
2595 }
2596
2597 /**
2598 * e1000_read_nvm_ich8lan - Read word(s) from the NVM
2599 * @hw: pointer to the HW structure
2600 * @offset: The offset (in bytes) of the word(s) to read.
2601 * @words: Size of data to read in words
2602 * @data: Pointer to the word(s) to read at offset.
2603 *
2604 * Reads a word(s) from the NVM using the flash access registers.
2605 **/
2606 static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
2607 u16 *data)
2608 {
2609 struct e1000_nvm_info *nvm = &hw->nvm;
2610 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
2611 u32 act_offset;
2612 s32 ret_val = 0;
2613 u32 bank = 0;
2614 u16 i, word;
2615
2616 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
2617 (words == 0)) {
2618 e_dbg("nvm parameter(s) out of bounds\n");
2619 ret_val = -E1000_ERR_NVM;
2620 goto out;
2621 }
2622
2623 nvm->ops.acquire(hw);
2624
2625 ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
2626 if (ret_val) {
2627 e_dbg("Could not detect valid bank, assuming bank 0\n");
2628 bank = 0;
2629 }
2630
2631 act_offset = (bank) ? nvm->flash_bank_size : 0;
2632 act_offset += offset;
2633
2634 ret_val = 0;
2635 for (i = 0; i < words; i++) {
2636 if (dev_spec->shadow_ram[offset + i].modified) {
2637 data[i] = dev_spec->shadow_ram[offset + i].value;
2638 } else {
2639 ret_val = e1000_read_flash_word_ich8lan(hw,
2640 act_offset + i,
2641 &word);
2642 if (ret_val)
2643 break;
2644 data[i] = word;
2645 }
2646 }
2647
2648 nvm->ops.release(hw);
2649
2650 out:
2651 if (ret_val)
2652 e_dbg("NVM read error: %d\n", ret_val);
2653
2654 return ret_val;
2655 }
2656
2657 /**
2658 * e1000_flash_cycle_init_ich8lan - Initialize flash
2659 * @hw: pointer to the HW structure
2660 *
2661 * This function does initial flash setup so that a new read/write/erase cycle
2662 * can be started.
2663 **/
2664 static s32 e1000_flash_cycle_init_ich8lan(struct e1000_hw *hw)
2665 {
2666 union ich8_hws_flash_status hsfsts;
2667 s32 ret_val = -E1000_ERR_NVM;
2668
2669 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
2670
2671 /* Check if the flash descriptor is valid */
2672 if (!hsfsts.hsf_status.fldesvalid) {
2673 e_dbg("Flash descriptor invalid. SW Sequencing must be used.\n");
2674 return -E1000_ERR_NVM;
2675 }
2676
2677 /* Clear FCERR and DAEL in hw status by writing 1 */
2678 hsfsts.hsf_status.flcerr = 1;
2679 hsfsts.hsf_status.dael = 1;
2680
2681 ew16flash(ICH_FLASH_HSFSTS, hsfsts.regval);
2682
2683 /* Either we should have a hardware SPI cycle in progress
2684 * bit to check against, in order to start a new cycle or
2685 * FDONE bit should be changed in the hardware so that it
2686 * is 1 after hardware reset, which can then be used as an
2687 * indication whether a cycle is in progress or has been
2688 * completed.
2689 */
2690
2691 if (!hsfsts.hsf_status.flcinprog) {
2692 /* There is no cycle running at present,
2693 * so we can start a cycle.
2694 * Begin by setting Flash Cycle Done.
2695 */
2696 hsfsts.hsf_status.flcdone = 1;
2697 ew16flash(ICH_FLASH_HSFSTS, hsfsts.regval);
2698 ret_val = 0;
2699 } else {
2700 s32 i;
2701
2702 /* Otherwise poll for sometime so the current
2703 * cycle has a chance to end before giving up.
2704 */
2705 for (i = 0; i < ICH_FLASH_READ_COMMAND_TIMEOUT; i++) {
2706 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
2707 if (!hsfsts.hsf_status.flcinprog) {
2708 ret_val = 0;
2709 break;
2710 }
2711 udelay(1);
2712 }
2713 if (!ret_val) {
2714 /* Successful in waiting for previous cycle to timeout,
2715 * now set the Flash Cycle Done.
2716 */
2717 hsfsts.hsf_status.flcdone = 1;
2718 ew16flash(ICH_FLASH_HSFSTS, hsfsts.regval);
2719 } else {
2720 e_dbg("Flash controller busy, cannot get access\n");
2721 }
2722 }
2723
2724 return ret_val;
2725 }
2726
2727 /**
2728 * e1000_flash_cycle_ich8lan - Starts flash cycle (read/write/erase)
2729 * @hw: pointer to the HW structure
2730 * @timeout: maximum time to wait for completion
2731 *
2732 * This function starts a flash cycle and waits for its completion.
2733 **/
2734 static s32 e1000_flash_cycle_ich8lan(struct e1000_hw *hw, u32 timeout)
2735 {
2736 union ich8_hws_flash_ctrl hsflctl;
2737 union ich8_hws_flash_status hsfsts;
2738 u32 i = 0;
2739
2740 /* Start a cycle by writing 1 in Flash Cycle Go in Hw Flash Control */
2741 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
2742 hsflctl.hsf_ctrl.flcgo = 1;
2743 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
2744
2745 /* wait till FDONE bit is set to 1 */
2746 do {
2747 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
2748 if (hsfsts.hsf_status.flcdone)
2749 break;
2750 udelay(1);
2751 } while (i++ < timeout);
2752
2753 if (hsfsts.hsf_status.flcdone && !hsfsts.hsf_status.flcerr)
2754 return 0;
2755
2756 return -E1000_ERR_NVM;
2757 }
2758
2759 /**
2760 * e1000_read_flash_word_ich8lan - Read word from flash
2761 * @hw: pointer to the HW structure
2762 * @offset: offset to data location
2763 * @data: pointer to the location for storing the data
2764 *
2765 * Reads the flash word at offset into data. Offset is converted
2766 * to bytes before read.
2767 **/
2768 static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw, u32 offset,
2769 u16 *data)
2770 {
2771 /* Must convert offset into bytes. */
2772 offset <<= 1;
2773
2774 return e1000_read_flash_data_ich8lan(hw, offset, 2, data);
2775 }
2776
2777 /**
2778 * e1000_read_flash_byte_ich8lan - Read byte from flash
2779 * @hw: pointer to the HW structure
2780 * @offset: The offset of the byte to read.
2781 * @data: Pointer to a byte to store the value read.
2782 *
2783 * Reads a single byte from the NVM using the flash access registers.
2784 **/
2785 static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
2786 u8 *data)
2787 {
2788 s32 ret_val;
2789 u16 word = 0;
2790
2791 ret_val = e1000_read_flash_data_ich8lan(hw, offset, 1, &word);
2792 if (ret_val)
2793 return ret_val;
2794
2795 *data = (u8)word;
2796
2797 return 0;
2798 }
2799
2800 /**
2801 * e1000_read_flash_data_ich8lan - Read byte or word from NVM
2802 * @hw: pointer to the HW structure
2803 * @offset: The offset (in bytes) of the byte or word to read.
2804 * @size: Size of data to read, 1=byte 2=word
2805 * @data: Pointer to the word to store the value read.
2806 *
2807 * Reads a byte or word from the NVM using the flash access registers.
2808 **/
2809 static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
2810 u8 size, u16 *data)
2811 {
2812 union ich8_hws_flash_status hsfsts;
2813 union ich8_hws_flash_ctrl hsflctl;
2814 u32 flash_linear_addr;
2815 u32 flash_data = 0;
2816 s32 ret_val = -E1000_ERR_NVM;
2817 u8 count = 0;
2818
2819 if (size < 1 || size > 2 || offset > ICH_FLASH_LINEAR_ADDR_MASK)
2820 return -E1000_ERR_NVM;
2821
2822 flash_linear_addr = ((ICH_FLASH_LINEAR_ADDR_MASK & offset) +
2823 hw->nvm.flash_base_addr);
2824
2825 do {
2826 udelay(1);
2827 /* Steps */
2828 ret_val = e1000_flash_cycle_init_ich8lan(hw);
2829 if (ret_val)
2830 break;
2831
2832 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
2833 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
2834 hsflctl.hsf_ctrl.fldbcount = size - 1;
2835 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_READ;
2836 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
2837
2838 ew32flash(ICH_FLASH_FADDR, flash_linear_addr);
2839
2840 ret_val =
2841 e1000_flash_cycle_ich8lan(hw,
2842 ICH_FLASH_READ_COMMAND_TIMEOUT);
2843
2844 /* Check if FCERR is set to 1, if set to 1, clear it
2845 * and try the whole sequence a few more times, else
2846 * read in (shift in) the Flash Data0, the order is
2847 * least significant byte first msb to lsb
2848 */
2849 if (!ret_val) {
2850 flash_data = er32flash(ICH_FLASH_FDATA0);
2851 if (size == 1)
2852 *data = (u8)(flash_data & 0x000000FF);
2853 else if (size == 2)
2854 *data = (u16)(flash_data & 0x0000FFFF);
2855 break;
2856 } else {
2857 /* If we've gotten here, then things are probably
2858 * completely hosed, but if the error condition is
2859 * detected, it won't hurt to give it another try...
2860 * ICH_FLASH_CYCLE_REPEAT_COUNT times.
2861 */
2862 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
2863 if (hsfsts.hsf_status.flcerr) {
2864 /* Repeat for some time before giving up. */
2865 continue;
2866 } else if (!hsfsts.hsf_status.flcdone) {
2867 e_dbg("Timeout error - flash cycle did not complete.\n");
2868 break;
2869 }
2870 }
2871 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
2872
2873 return ret_val;
2874 }
2875
2876 /**
2877 * e1000_write_nvm_ich8lan - Write word(s) to the NVM
2878 * @hw: pointer to the HW structure
2879 * @offset: The offset (in bytes) of the word(s) to write.
2880 * @words: Size of data to write in words
2881 * @data: Pointer to the word(s) to write at offset.
2882 *
2883 * Writes a byte or word to the NVM using the flash access registers.
2884 **/
2885 static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
2886 u16 *data)
2887 {
2888 struct e1000_nvm_info *nvm = &hw->nvm;
2889 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
2890 u16 i;
2891
2892 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
2893 (words == 0)) {
2894 e_dbg("nvm parameter(s) out of bounds\n");
2895 return -E1000_ERR_NVM;
2896 }
2897
2898 nvm->ops.acquire(hw);
2899
2900 for (i = 0; i < words; i++) {
2901 dev_spec->shadow_ram[offset + i].modified = true;
2902 dev_spec->shadow_ram[offset + i].value = data[i];
2903 }
2904
2905 nvm->ops.release(hw);
2906
2907 return 0;
2908 }
2909
2910 /**
2911 * e1000_update_nvm_checksum_ich8lan - Update the checksum for NVM
2912 * @hw: pointer to the HW structure
2913 *
2914 * The NVM checksum is updated by calling the generic update_nvm_checksum,
2915 * which writes the checksum to the shadow ram. The changes in the shadow
2916 * ram are then committed to the EEPROM by processing each bank at a time
2917 * checking for the modified bit and writing only the pending changes.
2918 * After a successful commit, the shadow ram is cleared and is ready for
2919 * future writes.
2920 **/
2921 static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
2922 {
2923 struct e1000_nvm_info *nvm = &hw->nvm;
2924 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
2925 u32 i, act_offset, new_bank_offset, old_bank_offset, bank;
2926 s32 ret_val;
2927 u16 data;
2928
2929 ret_val = e1000e_update_nvm_checksum_generic(hw);
2930 if (ret_val)
2931 goto out;
2932
2933 if (nvm->type != e1000_nvm_flash_sw)
2934 goto out;
2935
2936 nvm->ops.acquire(hw);
2937
2938 /* We're writing to the opposite bank so if we're on bank 1,
2939 * write to bank 0 etc. We also need to erase the segment that
2940 * is going to be written
2941 */
2942 ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
2943 if (ret_val) {
2944 e_dbg("Could not detect valid bank, assuming bank 0\n");
2945 bank = 0;
2946 }
2947
2948 if (bank == 0) {
2949 new_bank_offset = nvm->flash_bank_size;
2950 old_bank_offset = 0;
2951 ret_val = e1000_erase_flash_bank_ich8lan(hw, 1);
2952 if (ret_val)
2953 goto release;
2954 } else {
2955 old_bank_offset = nvm->flash_bank_size;
2956 new_bank_offset = 0;
2957 ret_val = e1000_erase_flash_bank_ich8lan(hw, 0);
2958 if (ret_val)
2959 goto release;
2960 }
2961
2962 for (i = 0; i < E1000_ICH8_SHADOW_RAM_WORDS; i++) {
2963 /* Determine whether to write the value stored
2964 * in the other NVM bank or a modified value stored
2965 * in the shadow RAM
2966 */
2967 if (dev_spec->shadow_ram[i].modified) {
2968 data = dev_spec->shadow_ram[i].value;
2969 } else {
2970 ret_val = e1000_read_flash_word_ich8lan(hw, i +
2971 old_bank_offset,
2972 &data);
2973 if (ret_val)
2974 break;
2975 }
2976
2977 /* If the word is 0x13, then make sure the signature bits
2978 * (15:14) are 11b until the commit has completed.
2979 * This will allow us to write 10b which indicates the
2980 * signature is valid. We want to do this after the write
2981 * has completed so that we don't mark the segment valid
2982 * while the write is still in progress
2983 */
2984 if (i == E1000_ICH_NVM_SIG_WORD)
2985 data |= E1000_ICH_NVM_SIG_MASK;
2986
2987 /* Convert offset to bytes. */
2988 act_offset = (i + new_bank_offset) << 1;
2989
2990 usleep_range(100, 200);
2991 /* Write the bytes to the new bank. */
2992 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
2993 act_offset,
2994 (u8)data);
2995 if (ret_val)
2996 break;
2997
2998 usleep_range(100, 200);
2999 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
3000 act_offset + 1,
3001 (u8)(data >> 8));
3002 if (ret_val)
3003 break;
3004 }
3005
3006 /* Don't bother writing the segment valid bits if sector
3007 * programming failed.
3008 */
3009 if (ret_val) {
3010 /* Possibly read-only, see e1000e_write_protect_nvm_ich8lan() */
3011 e_dbg("Flash commit failed.\n");
3012 goto release;
3013 }
3014
3015 /* Finally validate the new segment by setting bit 15:14
3016 * to 10b in word 0x13 , this can be done without an
3017 * erase as well since these bits are 11 to start with
3018 * and we need to change bit 14 to 0b
3019 */
3020 act_offset = new_bank_offset + E1000_ICH_NVM_SIG_WORD;
3021 ret_val = e1000_read_flash_word_ich8lan(hw, act_offset, &data);
3022 if (ret_val)
3023 goto release;
3024
3025 data &= 0xBFFF;
3026 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
3027 act_offset * 2 + 1,
3028 (u8)(data >> 8));
3029 if (ret_val)
3030 goto release;
3031
3032 /* And invalidate the previously valid segment by setting
3033 * its signature word (0x13) high_byte to 0b. This can be
3034 * done without an erase because flash erase sets all bits
3035 * to 1's. We can write 1's to 0's without an erase
3036 */
3037 act_offset = (old_bank_offset + E1000_ICH_NVM_SIG_WORD) * 2 + 1;
3038 ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset, 0);
3039 if (ret_val)
3040 goto release;
3041
3042 /* Great! Everything worked, we can now clear the cached entries. */
3043 for (i = 0; i < E1000_ICH8_SHADOW_RAM_WORDS; i++) {
3044 dev_spec->shadow_ram[i].modified = false;
3045 dev_spec->shadow_ram[i].value = 0xFFFF;
3046 }
3047
3048 release:
3049 nvm->ops.release(hw);
3050
3051 /* Reload the EEPROM, or else modifications will not appear
3052 * until after the next adapter reset.
3053 */
3054 if (!ret_val) {
3055 nvm->ops.reload(hw);
3056 usleep_range(10000, 20000);
3057 }
3058
3059 out:
3060 if (ret_val)
3061 e_dbg("NVM update error: %d\n", ret_val);
3062
3063 return ret_val;
3064 }
3065
3066 /**
3067 * e1000_validate_nvm_checksum_ich8lan - Validate EEPROM checksum
3068 * @hw: pointer to the HW structure
3069 *
3070 * Check to see if checksum needs to be fixed by reading bit 6 in word 0x19.
3071 * If the bit is 0, that the EEPROM had been modified, but the checksum was not
3072 * calculated, in which case we need to calculate the checksum and set bit 6.
3073 **/
3074 static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw)
3075 {
3076 s32 ret_val;
3077 u16 data;
3078 u16 word;
3079 u16 valid_csum_mask;
3080
3081 /* Read NVM and check Invalid Image CSUM bit. If this bit is 0,
3082 * the checksum needs to be fixed. This bit is an indication that
3083 * the NVM was prepared by OEM software and did not calculate
3084 * the checksum...a likely scenario.
3085 */
3086 switch (hw->mac.type) {
3087 case e1000_pch_lpt:
3088 word = NVM_COMPAT;
3089 valid_csum_mask = NVM_COMPAT_VALID_CSUM;
3090 break;
3091 default:
3092 word = NVM_FUTURE_INIT_WORD1;
3093 valid_csum_mask = NVM_FUTURE_INIT_WORD1_VALID_CSUM;
3094 break;
3095 }
3096
3097 ret_val = e1000_read_nvm(hw, word, 1, &data);
3098 if (ret_val)
3099 return ret_val;
3100
3101 if (!(data & valid_csum_mask)) {
3102 data |= valid_csum_mask;
3103 ret_val = e1000_write_nvm(hw, word, 1, &data);
3104 if (ret_val)
3105 return ret_val;
3106 ret_val = e1000e_update_nvm_checksum(hw);
3107 if (ret_val)
3108 return ret_val;
3109 }
3110
3111 return e1000e_validate_nvm_checksum_generic(hw);
3112 }
3113
3114 /**
3115 * e1000e_write_protect_nvm_ich8lan - Make the NVM read-only
3116 * @hw: pointer to the HW structure
3117 *
3118 * To prevent malicious write/erase of the NVM, set it to be read-only
3119 * so that the hardware ignores all write/erase cycles of the NVM via
3120 * the flash control registers. The shadow-ram copy of the NVM will
3121 * still be updated, however any updates to this copy will not stick
3122 * across driver reloads.
3123 **/
3124 void e1000e_write_protect_nvm_ich8lan(struct e1000_hw *hw)
3125 {
3126 struct e1000_nvm_info *nvm = &hw->nvm;
3127 union ich8_flash_protected_range pr0;
3128 union ich8_hws_flash_status hsfsts;
3129 u32 gfpreg;
3130
3131 nvm->ops.acquire(hw);
3132
3133 gfpreg = er32flash(ICH_FLASH_GFPREG);
3134
3135 /* Write-protect GbE Sector of NVM */
3136 pr0.regval = er32flash(ICH_FLASH_PR0);
3137 pr0.range.base = gfpreg & FLASH_GFPREG_BASE_MASK;
3138 pr0.range.limit = ((gfpreg >> 16) & FLASH_GFPREG_BASE_MASK);
3139 pr0.range.wpe = true;
3140 ew32flash(ICH_FLASH_PR0, pr0.regval);
3141
3142 /* Lock down a subset of GbE Flash Control Registers, e.g.
3143 * PR0 to prevent the write-protection from being lifted.
3144 * Once FLOCKDN is set, the registers protected by it cannot
3145 * be written until FLOCKDN is cleared by a hardware reset.
3146 */
3147 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
3148 hsfsts.hsf_status.flockdn = true;
3149 ew32flash(ICH_FLASH_HSFSTS, hsfsts.regval);
3150
3151 nvm->ops.release(hw);
3152 }
3153
3154 /**
3155 * e1000_write_flash_data_ich8lan - Writes bytes to the NVM
3156 * @hw: pointer to the HW structure
3157 * @offset: The offset (in bytes) of the byte/word to read.
3158 * @size: Size of data to read, 1=byte 2=word
3159 * @data: The byte(s) to write to the NVM.
3160 *
3161 * Writes one/two bytes to the NVM using the flash access registers.
3162 **/
3163 static s32 e1000_write_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
3164 u8 size, u16 data)
3165 {
3166 union ich8_hws_flash_status hsfsts;
3167 union ich8_hws_flash_ctrl hsflctl;
3168 u32 flash_linear_addr;
3169 u32 flash_data = 0;
3170 s32 ret_val;
3171 u8 count = 0;
3172
3173 if (size < 1 || size > 2 || data > size * 0xff ||
3174 offset > ICH_FLASH_LINEAR_ADDR_MASK)
3175 return -E1000_ERR_NVM;
3176
3177 flash_linear_addr = ((ICH_FLASH_LINEAR_ADDR_MASK & offset) +
3178 hw->nvm.flash_base_addr);
3179
3180 do {
3181 udelay(1);
3182 /* Steps */
3183 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3184 if (ret_val)
3185 break;
3186
3187 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
3188 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
3189 hsflctl.hsf_ctrl.fldbcount = size - 1;
3190 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_WRITE;
3191 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
3192
3193 ew32flash(ICH_FLASH_FADDR, flash_linear_addr);
3194
3195 if (size == 1)
3196 flash_data = (u32)data & 0x00FF;
3197 else
3198 flash_data = (u32)data;
3199
3200 ew32flash(ICH_FLASH_FDATA0, flash_data);
3201
3202 /* check if FCERR is set to 1 , if set to 1, clear it
3203 * and try the whole sequence a few more times else done
3204 */
3205 ret_val =
3206 e1000_flash_cycle_ich8lan(hw,
3207 ICH_FLASH_WRITE_COMMAND_TIMEOUT);
3208 if (!ret_val)
3209 break;
3210
3211 /* If we're here, then things are most likely
3212 * completely hosed, but if the error condition
3213 * is detected, it won't hurt to give it another
3214 * try...ICH_FLASH_CYCLE_REPEAT_COUNT times.
3215 */
3216 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
3217 if (hsfsts.hsf_status.flcerr)
3218 /* Repeat for some time before giving up. */
3219 continue;
3220 if (!hsfsts.hsf_status.flcdone) {
3221 e_dbg("Timeout error - flash cycle did not complete.\n");
3222 break;
3223 }
3224 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
3225
3226 return ret_val;
3227 }
3228
3229 /**
3230 * e1000_write_flash_byte_ich8lan - Write a single byte to NVM
3231 * @hw: pointer to the HW structure
3232 * @offset: The index of the byte to read.
3233 * @data: The byte to write to the NVM.
3234 *
3235 * Writes a single byte to the NVM using the flash access registers.
3236 **/
3237 static s32 e1000_write_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
3238 u8 data)
3239 {
3240 u16 word = (u16)data;
3241
3242 return e1000_write_flash_data_ich8lan(hw, offset, 1, word);
3243 }
3244
3245 /**
3246 * e1000_retry_write_flash_byte_ich8lan - Writes a single byte to NVM
3247 * @hw: pointer to the HW structure
3248 * @offset: The offset of the byte to write.
3249 * @byte: The byte to write to the NVM.
3250 *
3251 * Writes a single byte to the NVM using the flash access registers.
3252 * Goes through a retry algorithm before giving up.
3253 **/
3254 static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
3255 u32 offset, u8 byte)
3256 {
3257 s32 ret_val;
3258 u16 program_retries;
3259
3260 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
3261 if (!ret_val)
3262 return ret_val;
3263
3264 for (program_retries = 0; program_retries < 100; program_retries++) {
3265 e_dbg("Retrying Byte %2.2X at offset %u\n", byte, offset);
3266 usleep_range(100, 200);
3267 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
3268 if (!ret_val)
3269 break;
3270 }
3271 if (program_retries == 100)
3272 return -E1000_ERR_NVM;
3273
3274 return 0;
3275 }
3276
3277 /**
3278 * e1000_erase_flash_bank_ich8lan - Erase a bank (4k) from NVM
3279 * @hw: pointer to the HW structure
3280 * @bank: 0 for first bank, 1 for second bank, etc.
3281 *
3282 * Erases the bank specified. Each bank is a 4k block. Banks are 0 based.
3283 * bank N is 4096 * N + flash_reg_addr.
3284 **/
3285 static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank)
3286 {
3287 struct e1000_nvm_info *nvm = &hw->nvm;
3288 union ich8_hws_flash_status hsfsts;
3289 union ich8_hws_flash_ctrl hsflctl;
3290 u32 flash_linear_addr;
3291 /* bank size is in 16bit words - adjust to bytes */
3292 u32 flash_bank_size = nvm->flash_bank_size * 2;
3293 s32 ret_val;
3294 s32 count = 0;
3295 s32 j, iteration, sector_size;
3296
3297 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
3298
3299 /* Determine HW Sector size: Read BERASE bits of hw flash status
3300 * register
3301 * 00: The Hw sector is 256 bytes, hence we need to erase 16
3302 * consecutive sectors. The start index for the nth Hw sector
3303 * can be calculated as = bank * 4096 + n * 256
3304 * 01: The Hw sector is 4K bytes, hence we need to erase 1 sector.
3305 * The start index for the nth Hw sector can be calculated
3306 * as = bank * 4096
3307 * 10: The Hw sector is 8K bytes, nth sector = bank * 8192
3308 * (ich9 only, otherwise error condition)
3309 * 11: The Hw sector is 64K bytes, nth sector = bank * 65536
3310 */
3311 switch (hsfsts.hsf_status.berasesz) {
3312 case 0:
3313 /* Hw sector size 256 */
3314 sector_size = ICH_FLASH_SEG_SIZE_256;
3315 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_256;
3316 break;
3317 case 1:
3318 sector_size = ICH_FLASH_SEG_SIZE_4K;
3319 iteration = 1;
3320 break;
3321 case 2:
3322 sector_size = ICH_FLASH_SEG_SIZE_8K;
3323 iteration = 1;
3324 break;
3325 case 3:
3326 sector_size = ICH_FLASH_SEG_SIZE_64K;
3327 iteration = 1;
3328 break;
3329 default:
3330 return -E1000_ERR_NVM;
3331 }
3332
3333 /* Start with the base address, then add the sector offset. */
3334 flash_linear_addr = hw->nvm.flash_base_addr;
3335 flash_linear_addr += (bank) ? flash_bank_size : 0;
3336
3337 for (j = 0; j < iteration; j++) {
3338 do {
3339 u32 timeout = ICH_FLASH_ERASE_COMMAND_TIMEOUT;
3340
3341 /* Steps */
3342 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3343 if (ret_val)
3344 return ret_val;
3345
3346 /* Write a value 11 (block Erase) in Flash
3347 * Cycle field in hw flash control
3348 */
3349 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
3350 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_ERASE;
3351 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
3352
3353 /* Write the last 24 bits of an index within the
3354 * block into Flash Linear address field in Flash
3355 * Address.
3356 */
3357 flash_linear_addr += (j * sector_size);
3358 ew32flash(ICH_FLASH_FADDR, flash_linear_addr);
3359
3360 ret_val = e1000_flash_cycle_ich8lan(hw, timeout);
3361 if (!ret_val)
3362 break;
3363
3364 /* Check if FCERR is set to 1. If 1,
3365 * clear it and try the whole sequence
3366 * a few more times else Done
3367 */
3368 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
3369 if (hsfsts.hsf_status.flcerr)
3370 /* repeat for some time before giving up */
3371 continue;
3372 else if (!hsfsts.hsf_status.flcdone)
3373 return ret_val;
3374 } while (++count < ICH_FLASH_CYCLE_REPEAT_COUNT);
3375 }
3376
3377 return 0;
3378 }
3379
3380 /**
3381 * e1000_valid_led_default_ich8lan - Set the default LED settings
3382 * @hw: pointer to the HW structure
3383 * @data: Pointer to the LED settings
3384 *
3385 * Reads the LED default settings from the NVM to data. If the NVM LED
3386 * settings is all 0's or F's, set the LED default to a valid LED default
3387 * setting.
3388 **/
3389 static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw, u16 *data)
3390 {
3391 s32 ret_val;
3392
3393 ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
3394 if (ret_val) {
3395 e_dbg("NVM Read Error\n");
3396 return ret_val;
3397 }
3398
3399 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF)
3400 *data = ID_LED_DEFAULT_ICH8LAN;
3401
3402 return 0;
3403 }
3404
3405 /**
3406 * e1000_id_led_init_pchlan - store LED configurations
3407 * @hw: pointer to the HW structure
3408 *
3409 * PCH does not control LEDs via the LEDCTL register, rather it uses
3410 * the PHY LED configuration register.
3411 *
3412 * PCH also does not have an "always on" or "always off" mode which
3413 * complicates the ID feature. Instead of using the "on" mode to indicate
3414 * in ledctl_mode2 the LEDs to use for ID (see e1000e_id_led_init_generic()),
3415 * use "link_up" mode. The LEDs will still ID on request if there is no
3416 * link based on logic in e1000_led_[on|off]_pchlan().
3417 **/
3418 static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw)
3419 {
3420 struct e1000_mac_info *mac = &hw->mac;
3421 s32 ret_val;
3422 const u32 ledctl_on = E1000_LEDCTL_MODE_LINK_UP;
3423 const u32 ledctl_off = E1000_LEDCTL_MODE_LINK_UP | E1000_PHY_LED0_IVRT;
3424 u16 data, i, temp, shift;
3425
3426 /* Get default ID LED modes */
3427 ret_val = hw->nvm.ops.valid_led_default(hw, &data);
3428 if (ret_val)
3429 return ret_val;
3430
3431 mac->ledctl_default = er32(LEDCTL);
3432 mac->ledctl_mode1 = mac->ledctl_default;
3433 mac->ledctl_mode2 = mac->ledctl_default;
3434
3435 for (i = 0; i < 4; i++) {
3436 temp = (data >> (i << 2)) & E1000_LEDCTL_LED0_MODE_MASK;
3437 shift = (i * 5);
3438 switch (temp) {
3439 case ID_LED_ON1_DEF2:
3440 case ID_LED_ON1_ON2:
3441 case ID_LED_ON1_OFF2:
3442 mac->ledctl_mode1 &= ~(E1000_PHY_LED0_MASK << shift);
3443 mac->ledctl_mode1 |= (ledctl_on << shift);
3444 break;
3445 case ID_LED_OFF1_DEF2:
3446 case ID_LED_OFF1_ON2:
3447 case ID_LED_OFF1_OFF2:
3448 mac->ledctl_mode1 &= ~(E1000_PHY_LED0_MASK << shift);
3449 mac->ledctl_mode1 |= (ledctl_off << shift);
3450 break;
3451 default:
3452 /* Do nothing */
3453 break;
3454 }
3455 switch (temp) {
3456 case ID_LED_DEF1_ON2:
3457 case ID_LED_ON1_ON2:
3458 case ID_LED_OFF1_ON2:
3459 mac->ledctl_mode2 &= ~(E1000_PHY_LED0_MASK << shift);
3460 mac->ledctl_mode2 |= (ledctl_on << shift);
3461 break;
3462 case ID_LED_DEF1_OFF2:
3463 case ID_LED_ON1_OFF2:
3464 case ID_LED_OFF1_OFF2:
3465 mac->ledctl_mode2 &= ~(E1000_PHY_LED0_MASK << shift);
3466 mac->ledctl_mode2 |= (ledctl_off << shift);
3467 break;
3468 default:
3469 /* Do nothing */
3470 break;
3471 }
3472 }
3473
3474 return 0;
3475 }
3476
3477 /**
3478 * e1000_get_bus_info_ich8lan - Get/Set the bus type and width
3479 * @hw: pointer to the HW structure
3480 *
3481 * ICH8 use the PCI Express bus, but does not contain a PCI Express Capability
3482 * register, so the the bus width is hard coded.
3483 **/
3484 static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw)
3485 {
3486 struct e1000_bus_info *bus = &hw->bus;
3487 s32 ret_val;
3488
3489 ret_val = e1000e_get_bus_info_pcie(hw);
3490
3491 /* ICH devices are "PCI Express"-ish. They have
3492 * a configuration space, but do not contain
3493 * PCI Express Capability registers, so bus width
3494 * must be hardcoded.
3495 */
3496 if (bus->width == e1000_bus_width_unknown)
3497 bus->width = e1000_bus_width_pcie_x1;
3498
3499 return ret_val;
3500 }
3501
3502 /**
3503 * e1000_reset_hw_ich8lan - Reset the hardware
3504 * @hw: pointer to the HW structure
3505 *
3506 * Does a full reset of the hardware which includes a reset of the PHY and
3507 * MAC.
3508 **/
3509 static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
3510 {
3511 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3512 u16 kum_cfg;
3513 u32 ctrl, reg;
3514 s32 ret_val;
3515
3516 /* Prevent the PCI-E bus from sticking if there is no TLP connection
3517 * on the last TLP read/write transaction when MAC is reset.
3518 */
3519 ret_val = e1000e_disable_pcie_master(hw);
3520 if (ret_val)
3521 e_dbg("PCI-E Master disable polling has failed.\n");
3522
3523 e_dbg("Masking off all interrupts\n");
3524 ew32(IMC, 0xffffffff);
3525
3526 /* Disable the Transmit and Receive units. Then delay to allow
3527 * any pending transactions to complete before we hit the MAC
3528 * with the global reset.
3529 */
3530 ew32(RCTL, 0);
3531 ew32(TCTL, E1000_TCTL_PSP);
3532 e1e_flush();
3533
3534 usleep_range(10000, 20000);
3535
3536 /* Workaround for ICH8 bit corruption issue in FIFO memory */
3537 if (hw->mac.type == e1000_ich8lan) {
3538 /* Set Tx and Rx buffer allocation to 8k apiece. */
3539 ew32(PBA, E1000_PBA_8K);
3540 /* Set Packet Buffer Size to 16k. */
3541 ew32(PBS, E1000_PBS_16K);
3542 }
3543
3544 if (hw->mac.type == e1000_pchlan) {
3545 /* Save the NVM K1 bit setting */
3546 ret_val = e1000_read_nvm(hw, E1000_NVM_K1_CONFIG, 1, &kum_cfg);
3547 if (ret_val)
3548 return ret_val;
3549
3550 if (kum_cfg & E1000_NVM_K1_ENABLE)
3551 dev_spec->nvm_k1_enabled = true;
3552 else
3553 dev_spec->nvm_k1_enabled = false;
3554 }
3555
3556 ctrl = er32(CTRL);
3557
3558 if (!hw->phy.ops.check_reset_block(hw)) {
3559 /* Full-chip reset requires MAC and PHY reset at the same
3560 * time to make sure the interface between MAC and the
3561 * external PHY is reset.
3562 */
3563 ctrl |= E1000_CTRL_PHY_RST;
3564
3565 /* Gate automatic PHY configuration by hardware on
3566 * non-managed 82579
3567 */
3568 if ((hw->mac.type == e1000_pch2lan) &&
3569 !(er32(FWSM) & E1000_ICH_FWSM_FW_VALID))
3570 e1000_gate_hw_phy_config_ich8lan(hw, true);
3571 }
3572 ret_val = e1000_acquire_swflag_ich8lan(hw);
3573 e_dbg("Issuing a global reset to ich8lan\n");
3574 ew32(CTRL, (ctrl | E1000_CTRL_RST));
3575 /* cannot issue a flush here because it hangs the hardware */
3576 msleep(20);
3577
3578 /* Set Phy Config Counter to 50msec */
3579 if (hw->mac.type == e1000_pch2lan) {
3580 reg = er32(FEXTNVM3);
3581 reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
3582 reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
3583 ew32(FEXTNVM3, reg);
3584 }
3585
3586 if (!ret_val)
3587 clear_bit(__E1000_ACCESS_SHARED_RESOURCE, &hw->adapter->state);
3588
3589 if (ctrl & E1000_CTRL_PHY_RST) {
3590 ret_val = hw->phy.ops.get_cfg_done(hw);
3591 if (ret_val)
3592 return ret_val;
3593
3594 ret_val = e1000_post_phy_reset_ich8lan(hw);
3595 if (ret_val)
3596 return ret_val;
3597 }
3598
3599 /* For PCH, this write will make sure that any noise
3600 * will be detected as a CRC error and be dropped rather than show up
3601 * as a bad packet to the DMA engine.
3602 */
3603 if (hw->mac.type == e1000_pchlan)
3604 ew32(CRC_OFFSET, 0x65656565);
3605
3606 ew32(IMC, 0xffffffff);
3607 er32(ICR);
3608
3609 reg = er32(KABGTXD);
3610 reg |= E1000_KABGTXD_BGSQLBIAS;
3611 ew32(KABGTXD, reg);
3612
3613 return 0;
3614 }
3615
3616 /**
3617 * e1000_init_hw_ich8lan - Initialize the hardware
3618 * @hw: pointer to the HW structure
3619 *
3620 * Prepares the hardware for transmit and receive by doing the following:
3621 * - initialize hardware bits
3622 * - initialize LED identification
3623 * - setup receive address registers
3624 * - setup flow control
3625 * - setup transmit descriptors
3626 * - clear statistics
3627 **/
3628 static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw)
3629 {
3630 struct e1000_mac_info *mac = &hw->mac;
3631 u32 ctrl_ext, txdctl, snoop;
3632 s32 ret_val;
3633 u16 i;
3634
3635 e1000_initialize_hw_bits_ich8lan(hw);
3636
3637 /* Initialize identification LED */
3638 ret_val = mac->ops.id_led_init(hw);
3639 /* An error is not fatal and we should not stop init due to this */
3640 if (ret_val)
3641 e_dbg("Error initializing identification LED\n");
3642
3643 /* Setup the receive address. */
3644 e1000e_init_rx_addrs(hw, mac->rar_entry_count);
3645
3646 /* Zero out the Multicast HASH table */
3647 e_dbg("Zeroing the MTA\n");
3648 for (i = 0; i < mac->mta_reg_count; i++)
3649 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
3650
3651 /* The 82578 Rx buffer will stall if wakeup is enabled in host and
3652 * the ME. Disable wakeup by clearing the host wakeup bit.
3653 * Reset the phy after disabling host wakeup to reset the Rx buffer.
3654 */
3655 if (hw->phy.type == e1000_phy_82578) {
3656 e1e_rphy(hw, BM_PORT_GEN_CFG, &i);
3657 i &= ~BM_WUC_HOST_WU_BIT;
3658 e1e_wphy(hw, BM_PORT_GEN_CFG, i);
3659 ret_val = e1000_phy_hw_reset_ich8lan(hw);
3660 if (ret_val)
3661 return ret_val;
3662 }
3663
3664 /* Setup link and flow control */
3665 ret_val = mac->ops.setup_link(hw);
3666
3667 /* Set the transmit descriptor write-back policy for both queues */
3668 txdctl = er32(TXDCTL(0));
3669 txdctl = ((txdctl & ~E1000_TXDCTL_WTHRESH) |
3670 E1000_TXDCTL_FULL_TX_DESC_WB);
3671 txdctl = ((txdctl & ~E1000_TXDCTL_PTHRESH) |
3672 E1000_TXDCTL_MAX_TX_DESC_PREFETCH);
3673 ew32(TXDCTL(0), txdctl);
3674 txdctl = er32(TXDCTL(1));
3675 txdctl = ((txdctl & ~E1000_TXDCTL_WTHRESH) |
3676 E1000_TXDCTL_FULL_TX_DESC_WB);
3677 txdctl = ((txdctl & ~E1000_TXDCTL_PTHRESH) |
3678 E1000_TXDCTL_MAX_TX_DESC_PREFETCH);
3679 ew32(TXDCTL(1), txdctl);
3680
3681 /* ICH8 has opposite polarity of no_snoop bits.
3682 * By default, we should use snoop behavior.
3683 */
3684 if (mac->type == e1000_ich8lan)
3685 snoop = PCIE_ICH8_SNOOP_ALL;
3686 else
3687 snoop = (u32)~(PCIE_NO_SNOOP_ALL);
3688 e1000e_set_pcie_no_snoop(hw, snoop);
3689
3690 ctrl_ext = er32(CTRL_EXT);
3691 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
3692 ew32(CTRL_EXT, ctrl_ext);
3693
3694 /* Clear all of the statistics registers (clear on read). It is
3695 * important that we do this after we have tried to establish link
3696 * because the symbol error count will increment wildly if there
3697 * is no link.
3698 */
3699 e1000_clear_hw_cntrs_ich8lan(hw);
3700
3701 return ret_val;
3702 }
3703
3704 /**
3705 * e1000_initialize_hw_bits_ich8lan - Initialize required hardware bits
3706 * @hw: pointer to the HW structure
3707 *
3708 * Sets/Clears required hardware bits necessary for correctly setting up the
3709 * hardware for transmit and receive.
3710 **/
3711 static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw)
3712 {
3713 u32 reg;
3714
3715 /* Extended Device Control */
3716 reg = er32(CTRL_EXT);
3717 reg |= (1 << 22);
3718 /* Enable PHY low-power state when MAC is at D3 w/o WoL */
3719 if (hw->mac.type >= e1000_pchlan)
3720 reg |= E1000_CTRL_EXT_PHYPDEN;
3721 ew32(CTRL_EXT, reg);
3722
3723 /* Transmit Descriptor Control 0 */
3724 reg = er32(TXDCTL(0));
3725 reg |= (1 << 22);
3726 ew32(TXDCTL(0), reg);
3727
3728 /* Transmit Descriptor Control 1 */
3729 reg = er32(TXDCTL(1));
3730 reg |= (1 << 22);
3731 ew32(TXDCTL(1), reg);
3732
3733 /* Transmit Arbitration Control 0 */
3734 reg = er32(TARC(0));
3735 if (hw->mac.type == e1000_ich8lan)
3736 reg |= (1 << 28) | (1 << 29);
3737 reg |= (1 << 23) | (1 << 24) | (1 << 26) | (1 << 27);
3738 ew32(TARC(0), reg);
3739
3740 /* Transmit Arbitration Control 1 */
3741 reg = er32(TARC(1));
3742 if (er32(TCTL) & E1000_TCTL_MULR)
3743 reg &= ~(1 << 28);
3744 else
3745 reg |= (1 << 28);
3746 reg |= (1 << 24) | (1 << 26) | (1 << 30);
3747 ew32(TARC(1), reg);
3748
3749 /* Device Status */
3750 if (hw->mac.type == e1000_ich8lan) {
3751 reg = er32(STATUS);
3752 reg &= ~(1 << 31);
3753 ew32(STATUS, reg);
3754 }
3755
3756 /* work-around descriptor data corruption issue during nfs v2 udp
3757 * traffic, just disable the nfs filtering capability
3758 */
3759 reg = er32(RFCTL);
3760 reg |= (E1000_RFCTL_NFSW_DIS | E1000_RFCTL_NFSR_DIS);
3761
3762 /* Disable IPv6 extension header parsing because some malformed
3763 * IPv6 headers can hang the Rx.
3764 */
3765 if (hw->mac.type == e1000_ich8lan)
3766 reg |= (E1000_RFCTL_IPV6_EX_DIS | E1000_RFCTL_NEW_IPV6_EXT_DIS);
3767 ew32(RFCTL, reg);
3768
3769 /* Enable ECC on Lynxpoint */
3770 if (hw->mac.type == e1000_pch_lpt) {
3771 reg = er32(PBECCSTS);
3772 reg |= E1000_PBECCSTS_ECC_ENABLE;
3773 ew32(PBECCSTS, reg);
3774
3775 reg = er32(CTRL);
3776 reg |= E1000_CTRL_MEHE;
3777 ew32(CTRL, reg);
3778 }
3779 }
3780
3781 /**
3782 * e1000_setup_link_ich8lan - Setup flow control and link settings
3783 * @hw: pointer to the HW structure
3784 *
3785 * Determines which flow control settings to use, then configures flow
3786 * control. Calls the appropriate media-specific link configuration
3787 * function. Assuming the adapter has a valid link partner, a valid link
3788 * should be established. Assumes the hardware has previously been reset
3789 * and the transmitter and receiver are not enabled.
3790 **/
3791 static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw)
3792 {
3793 s32 ret_val;
3794
3795 if (hw->phy.ops.check_reset_block(hw))
3796 return 0;
3797
3798 /* ICH parts do not have a word in the NVM to determine
3799 * the default flow control setting, so we explicitly
3800 * set it to full.
3801 */
3802 if (hw->fc.requested_mode == e1000_fc_default) {
3803 /* Workaround h/w hang when Tx flow control enabled */
3804 if (hw->mac.type == e1000_pchlan)
3805 hw->fc.requested_mode = e1000_fc_rx_pause;
3806 else
3807 hw->fc.requested_mode = e1000_fc_full;
3808 }
3809
3810 /* Save off the requested flow control mode for use later. Depending
3811 * on the link partner's capabilities, we may or may not use this mode.
3812 */
3813 hw->fc.current_mode = hw->fc.requested_mode;
3814
3815 e_dbg("After fix-ups FlowControl is now = %x\n", hw->fc.current_mode);
3816
3817 /* Continue to configure the copper link. */
3818 ret_val = hw->mac.ops.setup_physical_interface(hw);
3819 if (ret_val)
3820 return ret_val;
3821
3822 ew32(FCTTV, hw->fc.pause_time);
3823 if ((hw->phy.type == e1000_phy_82578) ||
3824 (hw->phy.type == e1000_phy_82579) ||
3825 (hw->phy.type == e1000_phy_i217) ||
3826 (hw->phy.type == e1000_phy_82577)) {
3827 ew32(FCRTV_PCH, hw->fc.refresh_time);
3828
3829 ret_val = e1e_wphy(hw, PHY_REG(BM_PORT_CTRL_PAGE, 27),
3830 hw->fc.pause_time);
3831 if (ret_val)
3832 return ret_val;
3833 }
3834
3835 return e1000e_set_fc_watermarks(hw);
3836 }
3837
3838 /**
3839 * e1000_setup_copper_link_ich8lan - Configure MAC/PHY interface
3840 * @hw: pointer to the HW structure
3841 *
3842 * Configures the kumeran interface to the PHY to wait the appropriate time
3843 * when polling the PHY, then call the generic setup_copper_link to finish
3844 * configuring the copper link.
3845 **/
3846 static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw)
3847 {
3848 u32 ctrl;
3849 s32 ret_val;
3850 u16 reg_data;
3851
3852 ctrl = er32(CTRL);
3853 ctrl |= E1000_CTRL_SLU;
3854 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
3855 ew32(CTRL, ctrl);
3856
3857 /* Set the mac to wait the maximum time between each iteration
3858 * and increase the max iterations when polling the phy;
3859 * this fixes erroneous timeouts at 10Mbps.
3860 */
3861 ret_val = e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_TIMEOUTS, 0xFFFF);
3862 if (ret_val)
3863 return ret_val;
3864 ret_val = e1000e_read_kmrn_reg(hw, E1000_KMRNCTRLSTA_INBAND_PARAM,
3865 &reg_data);
3866 if (ret_val)
3867 return ret_val;
3868 reg_data |= 0x3F;
3869 ret_val = e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_INBAND_PARAM,
3870 reg_data);
3871 if (ret_val)
3872 return ret_val;
3873
3874 switch (hw->phy.type) {
3875 case e1000_phy_igp_3:
3876 ret_val = e1000e_copper_link_setup_igp(hw);
3877 if (ret_val)
3878 return ret_val;
3879 break;
3880 case e1000_phy_bm:
3881 case e1000_phy_82578:
3882 ret_val = e1000e_copper_link_setup_m88(hw);
3883 if (ret_val)
3884 return ret_val;
3885 break;
3886 case e1000_phy_82577:
3887 case e1000_phy_82579:
3888 ret_val = e1000_copper_link_setup_82577(hw);
3889 if (ret_val)
3890 return ret_val;
3891 break;
3892 case e1000_phy_ife:
3893 ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &reg_data);
3894 if (ret_val)
3895 return ret_val;
3896
3897 reg_data &= ~IFE_PMC_AUTO_MDIX;
3898
3899 switch (hw->phy.mdix) {
3900 case 1:
3901 reg_data &= ~IFE_PMC_FORCE_MDIX;
3902 break;
3903 case 2:
3904 reg_data |= IFE_PMC_FORCE_MDIX;
3905 break;
3906 case 0:
3907 default:
3908 reg_data |= IFE_PMC_AUTO_MDIX;
3909 break;
3910 }
3911 ret_val = e1e_wphy(hw, IFE_PHY_MDIX_CONTROL, reg_data);
3912 if (ret_val)
3913 return ret_val;
3914 break;
3915 default:
3916 break;
3917 }
3918
3919 return e1000e_setup_copper_link(hw);
3920 }
3921
3922 /**
3923 * e1000_setup_copper_link_pch_lpt - Configure MAC/PHY interface
3924 * @hw: pointer to the HW structure
3925 *
3926 * Calls the PHY specific link setup function and then calls the
3927 * generic setup_copper_link to finish configuring the link for
3928 * Lynxpoint PCH devices
3929 **/
3930 static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw)
3931 {
3932 u32 ctrl;
3933 s32 ret_val;
3934
3935 ctrl = er32(CTRL);
3936 ctrl |= E1000_CTRL_SLU;
3937 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
3938 ew32(CTRL, ctrl);
3939
3940 ret_val = e1000_copper_link_setup_82577(hw);
3941 if (ret_val)
3942 return ret_val;
3943
3944 return e1000e_setup_copper_link(hw);
3945 }
3946
3947 /**
3948 * e1000_get_link_up_info_ich8lan - Get current link speed and duplex
3949 * @hw: pointer to the HW structure
3950 * @speed: pointer to store current link speed
3951 * @duplex: pointer to store the current link duplex
3952 *
3953 * Calls the generic get_speed_and_duplex to retrieve the current link
3954 * information and then calls the Kumeran lock loss workaround for links at
3955 * gigabit speeds.
3956 **/
3957 static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw, u16 *speed,
3958 u16 *duplex)
3959 {
3960 s32 ret_val;
3961
3962 ret_val = e1000e_get_speed_and_duplex_copper(hw, speed, duplex);
3963 if (ret_val)
3964 return ret_val;
3965
3966 if ((hw->mac.type == e1000_ich8lan) &&
3967 (hw->phy.type == e1000_phy_igp_3) && (*speed == SPEED_1000)) {
3968 ret_val = e1000_kmrn_lock_loss_workaround_ich8lan(hw);
3969 }
3970
3971 return ret_val;
3972 }
3973
3974 /**
3975 * e1000_kmrn_lock_loss_workaround_ich8lan - Kumeran workaround
3976 * @hw: pointer to the HW structure
3977 *
3978 * Work-around for 82566 Kumeran PCS lock loss:
3979 * On link status change (i.e. PCI reset, speed change) and link is up and
3980 * speed is gigabit-
3981 * 0) if workaround is optionally disabled do nothing
3982 * 1) wait 1ms for Kumeran link to come up
3983 * 2) check Kumeran Diagnostic register PCS lock loss bit
3984 * 3) if not set the link is locked (all is good), otherwise...
3985 * 4) reset the PHY
3986 * 5) repeat up to 10 times
3987 * Note: this is only called for IGP3 copper when speed is 1gb.
3988 **/
3989 static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw)
3990 {
3991 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3992 u32 phy_ctrl;
3993 s32 ret_val;
3994 u16 i, data;
3995 bool link;
3996
3997 if (!dev_spec->kmrn_lock_loss_workaround_enabled)
3998 return 0;
3999
4000 /* Make sure link is up before proceeding. If not just return.
4001 * Attempting this while link is negotiating fouled up link
4002 * stability
4003 */
4004 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
4005 if (!link)
4006 return 0;
4007
4008 for (i = 0; i < 10; i++) {
4009 /* read once to clear */
4010 ret_val = e1e_rphy(hw, IGP3_KMRN_DIAG, &data);
4011 if (ret_val)
4012 return ret_val;
4013 /* and again to get new status */
4014 ret_val = e1e_rphy(hw, IGP3_KMRN_DIAG, &data);
4015 if (ret_val)
4016 return ret_val;
4017
4018 /* check for PCS lock */
4019 if (!(data & IGP3_KMRN_DIAG_PCS_LOCK_LOSS))
4020 return 0;
4021
4022 /* Issue PHY reset */
4023 e1000_phy_hw_reset(hw);
4024 mdelay(5);
4025 }
4026 /* Disable GigE link negotiation */
4027 phy_ctrl = er32(PHY_CTRL);
4028 phy_ctrl |= (E1000_PHY_CTRL_GBE_DISABLE |
4029 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
4030 ew32(PHY_CTRL, phy_ctrl);
4031
4032 /* Call gig speed drop workaround on Gig disable before accessing
4033 * any PHY registers
4034 */
4035 e1000e_gig_downshift_workaround_ich8lan(hw);
4036
4037 /* unable to acquire PCS lock */
4038 return -E1000_ERR_PHY;
4039 }
4040
4041 /**
4042 * e1000e_set_kmrn_lock_loss_workaround_ich8lan - Set Kumeran workaround state
4043 * @hw: pointer to the HW structure
4044 * @state: boolean value used to set the current Kumeran workaround state
4045 *
4046 * If ICH8, set the current Kumeran workaround state (enabled - true
4047 * /disabled - false).
4048 **/
4049 void e1000e_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,
4050 bool state)
4051 {
4052 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4053
4054 if (hw->mac.type != e1000_ich8lan) {
4055 e_dbg("Workaround applies to ICH8 only.\n");
4056 return;
4057 }
4058
4059 dev_spec->kmrn_lock_loss_workaround_enabled = state;
4060 }
4061
4062 /**
4063 * e1000_ipg3_phy_powerdown_workaround_ich8lan - Power down workaround on D3
4064 * @hw: pointer to the HW structure
4065 *
4066 * Workaround for 82566 power-down on D3 entry:
4067 * 1) disable gigabit link
4068 * 2) write VR power-down enable
4069 * 3) read it back
4070 * Continue if successful, else issue LCD reset and repeat
4071 **/
4072 void e1000e_igp3_phy_powerdown_workaround_ich8lan(struct e1000_hw *hw)
4073 {
4074 u32 reg;
4075 u16 data;
4076 u8 retry = 0;
4077
4078 if (hw->phy.type != e1000_phy_igp_3)
4079 return;
4080
4081 /* Try the workaround twice (if needed) */
4082 do {
4083 /* Disable link */
4084 reg = er32(PHY_CTRL);
4085 reg |= (E1000_PHY_CTRL_GBE_DISABLE |
4086 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
4087 ew32(PHY_CTRL, reg);
4088
4089 /* Call gig speed drop workaround on Gig disable before
4090 * accessing any PHY registers
4091 */
4092 if (hw->mac.type == e1000_ich8lan)
4093 e1000e_gig_downshift_workaround_ich8lan(hw);
4094
4095 /* Write VR power-down enable */
4096 e1e_rphy(hw, IGP3_VR_CTRL, &data);
4097 data &= ~IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
4098 e1e_wphy(hw, IGP3_VR_CTRL, data | IGP3_VR_CTRL_MODE_SHUTDOWN);
4099
4100 /* Read it back and test */
4101 e1e_rphy(hw, IGP3_VR_CTRL, &data);
4102 data &= IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
4103 if ((data == IGP3_VR_CTRL_MODE_SHUTDOWN) || retry)
4104 break;
4105
4106 /* Issue PHY reset and repeat at most one more time */
4107 reg = er32(CTRL);
4108 ew32(CTRL, reg | E1000_CTRL_PHY_RST);
4109 retry++;
4110 } while (retry);
4111 }
4112
4113 /**
4114 * e1000e_gig_downshift_workaround_ich8lan - WoL from S5 stops working
4115 * @hw: pointer to the HW structure
4116 *
4117 * Steps to take when dropping from 1Gb/s (eg. link cable removal (LSC),
4118 * LPLU, Gig disable, MDIC PHY reset):
4119 * 1) Set Kumeran Near-end loopback
4120 * 2) Clear Kumeran Near-end loopback
4121 * Should only be called for ICH8[m] devices with any 1G Phy.
4122 **/
4123 void e1000e_gig_downshift_workaround_ich8lan(struct e1000_hw *hw)
4124 {
4125 s32 ret_val;
4126 u16 reg_data;
4127
4128 if ((hw->mac.type != e1000_ich8lan) || (hw->phy.type == e1000_phy_ife))
4129 return;
4130
4131 ret_val = e1000e_read_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
4132 &reg_data);
4133 if (ret_val)
4134 return;
4135 reg_data |= E1000_KMRNCTRLSTA_DIAG_NELPBK;
4136 ret_val = e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
4137 reg_data);
4138 if (ret_val)
4139 return;
4140 reg_data &= ~E1000_KMRNCTRLSTA_DIAG_NELPBK;
4141 e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET, reg_data);
4142 }
4143
4144 /**
4145 * e1000_suspend_workarounds_ich8lan - workarounds needed during S0->Sx
4146 * @hw: pointer to the HW structure
4147 *
4148 * During S0 to Sx transition, it is possible the link remains at gig
4149 * instead of negotiating to a lower speed. Before going to Sx, set
4150 * 'Gig Disable' to force link speed negotiation to a lower speed based on
4151 * the LPLU setting in the NVM or custom setting. For PCH and newer parts,
4152 * the OEM bits PHY register (LED, GbE disable and LPLU configurations) also
4153 * needs to be written.
4154 * Parts that support (and are linked to a partner which support) EEE in
4155 * 100Mbps should disable LPLU since 100Mbps w/ EEE requires less power
4156 * than 10Mbps w/o EEE.
4157 **/
4158 void e1000_suspend_workarounds_ich8lan(struct e1000_hw *hw)
4159 {
4160 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4161 u32 phy_ctrl;
4162 s32 ret_val;
4163
4164 phy_ctrl = er32(PHY_CTRL);
4165 phy_ctrl |= E1000_PHY_CTRL_GBE_DISABLE;
4166
4167 if (hw->phy.type == e1000_phy_i217) {
4168 u16 phy_reg, device_id = hw->adapter->pdev->device;
4169
4170 if ((device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
4171 (device_id == E1000_DEV_ID_PCH_LPTLP_I218_V)) {
4172 u32 fextnvm6 = er32(FEXTNVM6);
4173
4174 ew32(FEXTNVM6, fextnvm6 & ~E1000_FEXTNVM6_REQ_PLL_CLK);
4175 }
4176
4177 ret_val = hw->phy.ops.acquire(hw);
4178 if (ret_val)
4179 goto out;
4180
4181 if (!dev_spec->eee_disable) {
4182 u16 eee_advert;
4183
4184 ret_val =
4185 e1000_read_emi_reg_locked(hw,
4186 I217_EEE_ADVERTISEMENT,
4187 &eee_advert);
4188 if (ret_val)
4189 goto release;
4190
4191 /* Disable LPLU if both link partners support 100BaseT
4192 * EEE and 100Full is advertised on both ends of the
4193 * link.
4194 */
4195 if ((eee_advert & I82579_EEE_100_SUPPORTED) &&
4196 (dev_spec->eee_lp_ability &
4197 I82579_EEE_100_SUPPORTED) &&
4198 (hw->phy.autoneg_advertised & ADVERTISE_100_FULL))
4199 phy_ctrl &= ~(E1000_PHY_CTRL_D0A_LPLU |
4200 E1000_PHY_CTRL_NOND0A_LPLU);
4201 }
4202
4203 /* For i217 Intel Rapid Start Technology support,
4204 * when the system is going into Sx and no manageability engine
4205 * is present, the driver must configure proxy to reset only on
4206 * power good. LPI (Low Power Idle) state must also reset only
4207 * on power good, as well as the MTA (Multicast table array).
4208 * The SMBus release must also be disabled on LCD reset.
4209 */
4210 if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
4211 /* Enable proxy to reset only on power good. */
4212 e1e_rphy_locked(hw, I217_PROXY_CTRL, &phy_reg);
4213 phy_reg |= I217_PROXY_CTRL_AUTO_DISABLE;
4214 e1e_wphy_locked(hw, I217_PROXY_CTRL, phy_reg);
4215
4216 /* Set bit enable LPI (EEE) to reset only on
4217 * power good.
4218 */
4219 e1e_rphy_locked(hw, I217_SxCTRL, &phy_reg);
4220 phy_reg |= I217_SxCTRL_ENABLE_LPI_RESET;
4221 e1e_wphy_locked(hw, I217_SxCTRL, phy_reg);
4222
4223 /* Disable the SMB release on LCD reset. */
4224 e1e_rphy_locked(hw, I217_MEMPWR, &phy_reg);
4225 phy_reg &= ~I217_MEMPWR_DISABLE_SMB_RELEASE;
4226 e1e_wphy_locked(hw, I217_MEMPWR, phy_reg);
4227 }
4228
4229 /* Enable MTA to reset for Intel Rapid Start Technology
4230 * Support
4231 */
4232 e1e_rphy_locked(hw, I217_CGFREG, &phy_reg);
4233 phy_reg |= I217_CGFREG_ENABLE_MTA_RESET;
4234 e1e_wphy_locked(hw, I217_CGFREG, phy_reg);
4235
4236 release:
4237 hw->phy.ops.release(hw);
4238 }
4239 out:
4240 ew32(PHY_CTRL, phy_ctrl);
4241
4242 if (hw->mac.type == e1000_ich8lan)
4243 e1000e_gig_downshift_workaround_ich8lan(hw);
4244
4245 if (hw->mac.type >= e1000_pchlan) {
4246 e1000_oem_bits_config_ich8lan(hw, false);
4247
4248 /* Reset PHY to activate OEM bits on 82577/8 */
4249 if (hw->mac.type == e1000_pchlan)
4250 e1000e_phy_hw_reset_generic(hw);
4251
4252 ret_val = hw->phy.ops.acquire(hw);
4253 if (ret_val)
4254 return;
4255 e1000_write_smbus_addr(hw);
4256 hw->phy.ops.release(hw);
4257 }
4258 }
4259
4260 /**
4261 * e1000_resume_workarounds_pchlan - workarounds needed during Sx->S0
4262 * @hw: pointer to the HW structure
4263 *
4264 * During Sx to S0 transitions on non-managed devices or managed devices
4265 * on which PHY resets are not blocked, if the PHY registers cannot be
4266 * accessed properly by the s/w toggle the LANPHYPC value to power cycle
4267 * the PHY.
4268 * On i217, setup Intel Rapid Start Technology.
4269 **/
4270 void e1000_resume_workarounds_pchlan(struct e1000_hw *hw)
4271 {
4272 s32 ret_val;
4273
4274 if (hw->mac.type < e1000_pch2lan)
4275 return;
4276
4277 ret_val = e1000_init_phy_workarounds_pchlan(hw);
4278 if (ret_val) {
4279 e_dbg("Failed to init PHY flow ret_val=%d\n", ret_val);
4280 return;
4281 }
4282
4283 /* For i217 Intel Rapid Start Technology support when the system
4284 * is transitioning from Sx and no manageability engine is present
4285 * configure SMBus to restore on reset, disable proxy, and enable
4286 * the reset on MTA (Multicast table array).
4287 */
4288 if (hw->phy.type == e1000_phy_i217) {
4289 u16 phy_reg;
4290
4291 ret_val = hw->phy.ops.acquire(hw);
4292 if (ret_val) {
4293 e_dbg("Failed to setup iRST\n");
4294 return;
4295 }
4296
4297 if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
4298 /* Restore clear on SMB if no manageability engine
4299 * is present
4300 */
4301 ret_val = e1e_rphy_locked(hw, I217_MEMPWR, &phy_reg);
4302 if (ret_val)
4303 goto release;
4304 phy_reg |= I217_MEMPWR_DISABLE_SMB_RELEASE;
4305 e1e_wphy_locked(hw, I217_MEMPWR, phy_reg);
4306
4307 /* Disable Proxy */
4308 e1e_wphy_locked(hw, I217_PROXY_CTRL, 0);
4309 }
4310 /* Enable reset on MTA */
4311 ret_val = e1e_rphy_locked(hw, I217_CGFREG, &phy_reg);
4312 if (ret_val)
4313 goto release;
4314 phy_reg &= ~I217_CGFREG_ENABLE_MTA_RESET;
4315 e1e_wphy_locked(hw, I217_CGFREG, phy_reg);
4316 release:
4317 if (ret_val)
4318 e_dbg("Error %d in resume workarounds\n", ret_val);
4319 hw->phy.ops.release(hw);
4320 }
4321 }
4322
4323 /**
4324 * e1000_cleanup_led_ich8lan - Restore the default LED operation
4325 * @hw: pointer to the HW structure
4326 *
4327 * Return the LED back to the default configuration.
4328 **/
4329 static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw)
4330 {
4331 if (hw->phy.type == e1000_phy_ife)
4332 return e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED, 0);
4333
4334 ew32(LEDCTL, hw->mac.ledctl_default);
4335 return 0;
4336 }
4337
4338 /**
4339 * e1000_led_on_ich8lan - Turn LEDs on
4340 * @hw: pointer to the HW structure
4341 *
4342 * Turn on the LEDs.
4343 **/
4344 static s32 e1000_led_on_ich8lan(struct e1000_hw *hw)
4345 {
4346 if (hw->phy.type == e1000_phy_ife)
4347 return e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED,
4348 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_ON));
4349
4350 ew32(LEDCTL, hw->mac.ledctl_mode2);
4351 return 0;
4352 }
4353
4354 /**
4355 * e1000_led_off_ich8lan - Turn LEDs off
4356 * @hw: pointer to the HW structure
4357 *
4358 * Turn off the LEDs.
4359 **/
4360 static s32 e1000_led_off_ich8lan(struct e1000_hw *hw)
4361 {
4362 if (hw->phy.type == e1000_phy_ife)
4363 return e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED,
4364 (IFE_PSCL_PROBE_MODE |
4365 IFE_PSCL_PROBE_LEDS_OFF));
4366
4367 ew32(LEDCTL, hw->mac.ledctl_mode1);
4368 return 0;
4369 }
4370
4371 /**
4372 * e1000_setup_led_pchlan - Configures SW controllable LED
4373 * @hw: pointer to the HW structure
4374 *
4375 * This prepares the SW controllable LED for use.
4376 **/
4377 static s32 e1000_setup_led_pchlan(struct e1000_hw *hw)
4378 {
4379 return e1e_wphy(hw, HV_LED_CONFIG, (u16)hw->mac.ledctl_mode1);
4380 }
4381
4382 /**
4383 * e1000_cleanup_led_pchlan - Restore the default LED operation
4384 * @hw: pointer to the HW structure
4385 *
4386 * Return the LED back to the default configuration.
4387 **/
4388 static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw)
4389 {
4390 return e1e_wphy(hw, HV_LED_CONFIG, (u16)hw->mac.ledctl_default);
4391 }
4392
4393 /**
4394 * e1000_led_on_pchlan - Turn LEDs on
4395 * @hw: pointer to the HW structure
4396 *
4397 * Turn on the LEDs.
4398 **/
4399 static s32 e1000_led_on_pchlan(struct e1000_hw *hw)
4400 {
4401 u16 data = (u16)hw->mac.ledctl_mode2;
4402 u32 i, led;
4403
4404 /* If no link, then turn LED on by setting the invert bit
4405 * for each LED that's mode is "link_up" in ledctl_mode2.
4406 */
4407 if (!(er32(STATUS) & E1000_STATUS_LU)) {
4408 for (i = 0; i < 3; i++) {
4409 led = (data >> (i * 5)) & E1000_PHY_LED0_MASK;
4410 if ((led & E1000_PHY_LED0_MODE_MASK) !=
4411 E1000_LEDCTL_MODE_LINK_UP)
4412 continue;
4413 if (led & E1000_PHY_LED0_IVRT)
4414 data &= ~(E1000_PHY_LED0_IVRT << (i * 5));
4415 else
4416 data |= (E1000_PHY_LED0_IVRT << (i * 5));
4417 }
4418 }
4419
4420 return e1e_wphy(hw, HV_LED_CONFIG, data);
4421 }
4422
4423 /**
4424 * e1000_led_off_pchlan - Turn LEDs off
4425 * @hw: pointer to the HW structure
4426 *
4427 * Turn off the LEDs.
4428 **/
4429 static s32 e1000_led_off_pchlan(struct e1000_hw *hw)
4430 {
4431 u16 data = (u16)hw->mac.ledctl_mode1;
4432 u32 i, led;
4433
4434 /* If no link, then turn LED off by clearing the invert bit
4435 * for each LED that's mode is "link_up" in ledctl_mode1.
4436 */
4437 if (!(er32(STATUS) & E1000_STATUS_LU)) {
4438 for (i = 0; i < 3; i++) {
4439 led = (data >> (i * 5)) & E1000_PHY_LED0_MASK;
4440 if ((led & E1000_PHY_LED0_MODE_MASK) !=
4441 E1000_LEDCTL_MODE_LINK_UP)
4442 continue;
4443 if (led & E1000_PHY_LED0_IVRT)
4444 data &= ~(E1000_PHY_LED0_IVRT << (i * 5));
4445 else
4446 data |= (E1000_PHY_LED0_IVRT << (i * 5));
4447 }
4448 }
4449
4450 return e1e_wphy(hw, HV_LED_CONFIG, data);
4451 }
4452
4453 /**
4454 * e1000_get_cfg_done_ich8lan - Read config done bit after Full or PHY reset
4455 * @hw: pointer to the HW structure
4456 *
4457 * Read appropriate register for the config done bit for completion status
4458 * and configure the PHY through s/w for EEPROM-less parts.
4459 *
4460 * NOTE: some silicon which is EEPROM-less will fail trying to read the
4461 * config done bit, so only an error is logged and continues. If we were
4462 * to return with error, EEPROM-less silicon would not be able to be reset
4463 * or change link.
4464 **/
4465 static s32 e1000_get_cfg_done_ich8lan(struct e1000_hw *hw)
4466 {
4467 s32 ret_val = 0;
4468 u32 bank = 0;
4469 u32 status;
4470
4471 e1000e_get_cfg_done_generic(hw);
4472
4473 /* Wait for indication from h/w that it has completed basic config */
4474 if (hw->mac.type >= e1000_ich10lan) {
4475 e1000_lan_init_done_ich8lan(hw);
4476 } else {
4477 ret_val = e1000e_get_auto_rd_done(hw);
4478 if (ret_val) {
4479 /* When auto config read does not complete, do not
4480 * return with an error. This can happen in situations
4481 * where there is no eeprom and prevents getting link.
4482 */
4483 e_dbg("Auto Read Done did not complete\n");
4484 ret_val = 0;
4485 }
4486 }
4487
4488 /* Clear PHY Reset Asserted bit */
4489 status = er32(STATUS);
4490 if (status & E1000_STATUS_PHYRA)
4491 ew32(STATUS, status & ~E1000_STATUS_PHYRA);
4492 else
4493 e_dbg("PHY Reset Asserted not set - needs delay\n");
4494
4495 /* If EEPROM is not marked present, init the IGP 3 PHY manually */
4496 if (hw->mac.type <= e1000_ich9lan) {
4497 if (!(er32(EECD) & E1000_EECD_PRES) &&
4498 (hw->phy.type == e1000_phy_igp_3)) {
4499 e1000e_phy_init_script_igp3(hw);
4500 }
4501 } else {
4502 if (e1000_valid_nvm_bank_detect_ich8lan(hw, &bank)) {
4503 /* Maybe we should do a basic PHY config */
4504 e_dbg("EEPROM not present\n");
4505 ret_val = -E1000_ERR_CONFIG;
4506 }
4507 }
4508
4509 return ret_val;
4510 }
4511
4512 /**
4513 * e1000_power_down_phy_copper_ich8lan - Remove link during PHY power down
4514 * @hw: pointer to the HW structure
4515 *
4516 * In the case of a PHY power down to save power, or to turn off link during a
4517 * driver unload, or wake on lan is not enabled, remove the link.
4518 **/
4519 static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw)
4520 {
4521 /* If the management interface is not enabled, then power down */
4522 if (!(hw->mac.ops.check_mng_mode(hw) ||
4523 hw->phy.ops.check_reset_block(hw)))
4524 e1000_power_down_phy_copper(hw);
4525 }
4526
4527 /**
4528 * e1000_clear_hw_cntrs_ich8lan - Clear statistical counters
4529 * @hw: pointer to the HW structure
4530 *
4531 * Clears hardware counters specific to the silicon family and calls
4532 * clear_hw_cntrs_generic to clear all general purpose counters.
4533 **/
4534 static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw)
4535 {
4536 u16 phy_data;
4537 s32 ret_val;
4538
4539 e1000e_clear_hw_cntrs_base(hw);
4540
4541 er32(ALGNERRC);
4542 er32(RXERRC);
4543 er32(TNCRS);
4544 er32(CEXTERR);
4545 er32(TSCTC);
4546 er32(TSCTFC);
4547
4548 er32(MGTPRC);
4549 er32(MGTPDC);
4550 er32(MGTPTC);
4551
4552 er32(IAC);
4553 er32(ICRXOC);
4554
4555 /* Clear PHY statistics registers */
4556 if ((hw->phy.type == e1000_phy_82578) ||
4557 (hw->phy.type == e1000_phy_82579) ||
4558 (hw->phy.type == e1000_phy_i217) ||
4559 (hw->phy.type == e1000_phy_82577)) {
4560 ret_val = hw->phy.ops.acquire(hw);
4561 if (ret_val)
4562 return;
4563 ret_val = hw->phy.ops.set_page(hw,
4564 HV_STATS_PAGE << IGP_PAGE_SHIFT);
4565 if (ret_val)
4566 goto release;
4567 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4568 hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
4569 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4570 hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
4571 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4572 hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
4573 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4574 hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
4575 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4576 hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
4577 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4578 hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
4579 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4580 hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
4581 release:
4582 hw->phy.ops.release(hw);
4583 }
4584 }
4585
4586 static const struct e1000_mac_operations ich8_mac_ops = {
4587 /* check_mng_mode dependent on mac type */
4588 .check_for_link = e1000_check_for_copper_link_ich8lan,
4589 /* cleanup_led dependent on mac type */
4590 .clear_hw_cntrs = e1000_clear_hw_cntrs_ich8lan,
4591 .get_bus_info = e1000_get_bus_info_ich8lan,
4592 .set_lan_id = e1000_set_lan_id_single_port,
4593 .get_link_up_info = e1000_get_link_up_info_ich8lan,
4594 /* led_on dependent on mac type */
4595 /* led_off dependent on mac type */
4596 .update_mc_addr_list = e1000e_update_mc_addr_list_generic,
4597 .reset_hw = e1000_reset_hw_ich8lan,
4598 .init_hw = e1000_init_hw_ich8lan,
4599 .setup_link = e1000_setup_link_ich8lan,
4600 .setup_physical_interface = e1000_setup_copper_link_ich8lan,
4601 /* id_led_init dependent on mac type */
4602 .config_collision_dist = e1000e_config_collision_dist_generic,
4603 .rar_set = e1000e_rar_set_generic,
4604 };
4605
4606 static const struct e1000_phy_operations ich8_phy_ops = {
4607 .acquire = e1000_acquire_swflag_ich8lan,
4608 .check_reset_block = e1000_check_reset_block_ich8lan,
4609 .commit = NULL,
4610 .get_cfg_done = e1000_get_cfg_done_ich8lan,
4611 .get_cable_length = e1000e_get_cable_length_igp_2,
4612 .read_reg = e1000e_read_phy_reg_igp,
4613 .release = e1000_release_swflag_ich8lan,
4614 .reset = e1000_phy_hw_reset_ich8lan,
4615 .set_d0_lplu_state = e1000_set_d0_lplu_state_ich8lan,
4616 .set_d3_lplu_state = e1000_set_d3_lplu_state_ich8lan,
4617 .write_reg = e1000e_write_phy_reg_igp,
4618 };
4619
4620 static const struct e1000_nvm_operations ich8_nvm_ops = {
4621 .acquire = e1000_acquire_nvm_ich8lan,
4622 .read = e1000_read_nvm_ich8lan,
4623 .release = e1000_release_nvm_ich8lan,
4624 .reload = e1000e_reload_nvm_generic,
4625 .update = e1000_update_nvm_checksum_ich8lan,
4626 .valid_led_default = e1000_valid_led_default_ich8lan,
4627 .validate = e1000_validate_nvm_checksum_ich8lan,
4628 .write = e1000_write_nvm_ich8lan,
4629 };
4630
4631 const struct e1000_info e1000_ich8_info = {
4632 .mac = e1000_ich8lan,
4633 .flags = FLAG_HAS_WOL
4634 | FLAG_IS_ICH
4635 | FLAG_HAS_CTRLEXT_ON_LOAD
4636 | FLAG_HAS_AMT
4637 | FLAG_HAS_FLASH
4638 | FLAG_APME_IN_WUC,
4639 .pba = 8,
4640 .max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN,
4641 .get_variants = e1000_get_variants_ich8lan,
4642 .mac_ops = &ich8_mac_ops,
4643 .phy_ops = &ich8_phy_ops,
4644 .nvm_ops = &ich8_nvm_ops,
4645 };
4646
4647 const struct e1000_info e1000_ich9_info = {
4648 .mac = e1000_ich9lan,
4649 .flags = FLAG_HAS_JUMBO_FRAMES
4650 | FLAG_IS_ICH
4651 | FLAG_HAS_WOL
4652 | FLAG_HAS_CTRLEXT_ON_LOAD
4653 | FLAG_HAS_AMT
4654 | FLAG_HAS_FLASH
4655 | FLAG_APME_IN_WUC,
4656 .pba = 18,
4657 .max_hw_frame_size = DEFAULT_JUMBO,
4658 .get_variants = e1000_get_variants_ich8lan,
4659 .mac_ops = &ich8_mac_ops,
4660 .phy_ops = &ich8_phy_ops,
4661 .nvm_ops = &ich8_nvm_ops,
4662 };
4663
4664 const struct e1000_info e1000_ich10_info = {
4665 .mac = e1000_ich10lan,
4666 .flags = FLAG_HAS_JUMBO_FRAMES
4667 | FLAG_IS_ICH
4668 | FLAG_HAS_WOL
4669 | FLAG_HAS_CTRLEXT_ON_LOAD
4670 | FLAG_HAS_AMT
4671 | FLAG_HAS_FLASH
4672 | FLAG_APME_IN_WUC,
4673 .pba = 18,
4674 .max_hw_frame_size = DEFAULT_JUMBO,
4675 .get_variants = e1000_get_variants_ich8lan,
4676 .mac_ops = &ich8_mac_ops,
4677 .phy_ops = &ich8_phy_ops,
4678 .nvm_ops = &ich8_nvm_ops,
4679 };
4680
4681 const struct e1000_info e1000_pch_info = {
4682 .mac = e1000_pchlan,
4683 .flags = FLAG_IS_ICH
4684 | FLAG_HAS_WOL
4685 | FLAG_HAS_CTRLEXT_ON_LOAD
4686 | FLAG_HAS_AMT
4687 | FLAG_HAS_FLASH
4688 | FLAG_HAS_JUMBO_FRAMES
4689 | FLAG_DISABLE_FC_PAUSE_TIME /* errata */
4690 | FLAG_APME_IN_WUC,
4691 .flags2 = FLAG2_HAS_PHY_STATS,
4692 .pba = 26,
4693 .max_hw_frame_size = 4096,
4694 .get_variants = e1000_get_variants_ich8lan,
4695 .mac_ops = &ich8_mac_ops,
4696 .phy_ops = &ich8_phy_ops,
4697 .nvm_ops = &ich8_nvm_ops,
4698 };
4699
4700 const struct e1000_info e1000_pch2_info = {
4701 .mac = e1000_pch2lan,
4702 .flags = FLAG_IS_ICH
4703 | FLAG_HAS_WOL
4704 | FLAG_HAS_HW_TIMESTAMP
4705 | FLAG_HAS_CTRLEXT_ON_LOAD
4706 | FLAG_HAS_AMT
4707 | FLAG_HAS_FLASH
4708 | FLAG_HAS_JUMBO_FRAMES
4709 | FLAG_APME_IN_WUC,
4710 .flags2 = FLAG2_HAS_PHY_STATS
4711 | FLAG2_HAS_EEE,
4712 .pba = 26,
4713 .max_hw_frame_size = 9018,
4714 .get_variants = e1000_get_variants_ich8lan,
4715 .mac_ops = &ich8_mac_ops,
4716 .phy_ops = &ich8_phy_ops,
4717 .nvm_ops = &ich8_nvm_ops,
4718 };
4719
4720 const struct e1000_info e1000_pch_lpt_info = {
4721 .mac = e1000_pch_lpt,
4722 .flags = FLAG_IS_ICH
4723 | FLAG_HAS_WOL
4724 | FLAG_HAS_HW_TIMESTAMP
4725 | FLAG_HAS_CTRLEXT_ON_LOAD
4726 | FLAG_HAS_AMT
4727 | FLAG_HAS_FLASH
4728 | FLAG_HAS_JUMBO_FRAMES
4729 | FLAG_APME_IN_WUC,
4730 .flags2 = FLAG2_HAS_PHY_STATS
4731 | FLAG2_HAS_EEE,
4732 .pba = 26,
4733 .max_hw_frame_size = 9018,
4734 .get_variants = e1000_get_variants_ich8lan,
4735 .mac_ops = &ich8_mac_ops,
4736 .phy_ops = &ich8_phy_ops,
4737 .nvm_ops = &ich8_nvm_ops,
4738 };
CRIS linux kernel tree