1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2018 Intel Corporation. */
3
4 /* e1000_82575
5 * e1000_82576
6 */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/types.h>
11 #include <linux/if_ether.h>
12 #include <linux/i2c.h>
13
14 #include "e1000_mac.h"
15 #include "e1000_82575.h"
16 #include "e1000_i210.h"
17 #include "igb.h"
18
19 static s32 igb_get_invariants_82575(struct e1000_hw *);
20 static s32 igb_acquire_phy_82575(struct e1000_hw *);
21 static void igb_release_phy_82575(struct e1000_hw *);
22 static s32 igb_acquire_nvm_82575(struct e1000_hw *);
23 static void igb_release_nvm_82575(struct e1000_hw *);
24 static s32 igb_check_for_link_82575(struct e1000_hw *);
25 static s32 igb_get_cfg_done_82575(struct e1000_hw *);
26 static s32 igb_init_hw_82575(struct e1000_hw *);
27 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *);
28 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *);
29 static s32 igb_reset_hw_82575(struct e1000_hw *);
30 static s32 igb_reset_hw_82580(struct e1000_hw *);
31 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *, bool);
32 static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *, bool);
33 static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *, bool);
34 static s32 igb_setup_copper_link_82575(struct e1000_hw *);
35 static s32 igb_setup_serdes_link_82575(struct e1000_hw *);
36 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16);
37 static void igb_clear_hw_cntrs_82575(struct e1000_hw *);
38 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *, u16);
39 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *,
40 u16 *);
41 static s32 igb_get_phy_id_82575(struct e1000_hw *);
42 static void igb_release_swfw_sync_82575(struct e1000_hw *, u16);
43 static bool igb_sgmii_active_82575(struct e1000_hw *);
44 static s32 igb_reset_init_script_82575(struct e1000_hw *);
45 static s32 igb_read_mac_addr_82575(struct e1000_hw *);
46 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw);
47 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw);
48 static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw);
49 static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw);
50 static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw);
51 static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw);
52 static const u16 e1000_82580_rxpbs_table[] = {
53 36, 72, 144, 1, 2, 4, 8, 16, 35, 70, 140 };
54
55 /* Due to a hw errata, if the host tries to configure the VFTA register
56 * while performing queries from the BMC or DMA, then the VFTA in some
57 * cases won't be written.
58 */
59
60 /**
61 * igb_write_vfta_i350 - Write value to VLAN filter table
62 * @hw: pointer to the HW structure
63 * @offset: register offset in VLAN filter table
64 * @value: register value written to VLAN filter table
65 *
66 * Writes value at the given offset in the register array which stores
67 * the VLAN filter table.
68 **/
igb_write_vfta_i350(struct e1000_hw * hw,u32 offset,u32 value)69 static void igb_write_vfta_i350(struct e1000_hw *hw, u32 offset, u32 value)
70 {
71 struct igb_adapter *adapter = hw->back;
72 int i;
73
74 for (i = 10; i--;)
75 array_wr32(E1000_VFTA, offset, value);
76
77 wrfl();
78 adapter->shadow_vfta[offset] = value;
79 }
80
81 /**
82 * igb_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO
83 * @hw: pointer to the HW structure
84 *
85 * Called to determine if the I2C pins are being used for I2C or as an
86 * external MDIO interface since the two options are mutually exclusive.
87 **/
igb_sgmii_uses_mdio_82575(struct e1000_hw * hw)88 static bool igb_sgmii_uses_mdio_82575(struct e1000_hw *hw)
89 {
90 u32 reg = 0;
91 bool ext_mdio = false;
92
93 switch (hw->mac.type) {
94 case e1000_82575:
95 case e1000_82576:
96 reg = rd32(E1000_MDIC);
97 ext_mdio = !!(reg & E1000_MDIC_DEST);
98 break;
99 case e1000_82580:
100 case e1000_i350:
101 case e1000_i354:
102 case e1000_i210:
103 case e1000_i211:
104 reg = rd32(E1000_MDICNFG);
105 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO);
106 break;
107 default:
108 break;
109 }
110 return ext_mdio;
111 }
112
113 /**
114 * igb_check_for_link_media_swap - Check which M88E1112 interface linked
115 * @hw: pointer to the HW structure
116 *
117 * Poll the M88E1112 interfaces to see which interface achieved link.
118 */
igb_check_for_link_media_swap(struct e1000_hw * hw)119 static s32 igb_check_for_link_media_swap(struct e1000_hw *hw)
120 {
121 struct e1000_phy_info *phy = &hw->phy;
122 s32 ret_val;
123 u16 data;
124 u8 port = 0;
125
126 /* Check the copper medium. */
127 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0);
128 if (ret_val)
129 return ret_val;
130
131 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data);
132 if (ret_val)
133 return ret_val;
134
135 if (data & E1000_M88E1112_STATUS_LINK)
136 port = E1000_MEDIA_PORT_COPPER;
137
138 /* Check the other medium. */
139 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 1);
140 if (ret_val)
141 return ret_val;
142
143 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data);
144 if (ret_val)
145 return ret_val;
146
147
148 if (data & E1000_M88E1112_STATUS_LINK)
149 port = E1000_MEDIA_PORT_OTHER;
150
151 /* Determine if a swap needs to happen. */
152 if (port && (hw->dev_spec._82575.media_port != port)) {
153 hw->dev_spec._82575.media_port = port;
154 hw->dev_spec._82575.media_changed = true;
155 }
156
157 if (port == E1000_MEDIA_PORT_COPPER) {
158 /* reset page to 0 */
159 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0);
160 if (ret_val)
161 return ret_val;
162 igb_check_for_link_82575(hw);
163 } else {
164 igb_check_for_link_82575(hw);
165 /* reset page to 0 */
166 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0);
167 if (ret_val)
168 return ret_val;
169 }
170
171 return 0;
172 }
173
174 /**
175 * igb_init_phy_params_82575 - Init PHY func ptrs.
176 * @hw: pointer to the HW structure
177 **/
igb_init_phy_params_82575(struct e1000_hw * hw)178 static s32 igb_init_phy_params_82575(struct e1000_hw *hw)
179 {
180 struct e1000_phy_info *phy = &hw->phy;
181 s32 ret_val = 0;
182 u32 ctrl_ext;
183
184 if (hw->phy.media_type != e1000_media_type_copper) {
185 phy->type = e1000_phy_none;
186 goto out;
187 }
188
189 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
190 phy->reset_delay_us = 100;
191
192 ctrl_ext = rd32(E1000_CTRL_EXT);
193
194 if (igb_sgmii_active_82575(hw)) {
195 phy->ops.reset = igb_phy_hw_reset_sgmii_82575;
196 ctrl_ext |= E1000_CTRL_I2C_ENA;
197 } else {
198 phy->ops.reset = igb_phy_hw_reset;
199 ctrl_ext &= ~E1000_CTRL_I2C_ENA;
200 }
201
202 wr32(E1000_CTRL_EXT, ctrl_ext);
203 igb_reset_mdicnfg_82580(hw);
204
205 if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) {
206 phy->ops.read_reg = igb_read_phy_reg_sgmii_82575;
207 phy->ops.write_reg = igb_write_phy_reg_sgmii_82575;
208 } else {
209 switch (hw->mac.type) {
210 case e1000_82580:
211 case e1000_i350:
212 case e1000_i354:
213 case e1000_i210:
214 case e1000_i211:
215 phy->ops.read_reg = igb_read_phy_reg_82580;
216 phy->ops.write_reg = igb_write_phy_reg_82580;
217 break;
218 default:
219 phy->ops.read_reg = igb_read_phy_reg_igp;
220 phy->ops.write_reg = igb_write_phy_reg_igp;
221 }
222 }
223
224 /* set lan id */
225 hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >>
226 E1000_STATUS_FUNC_SHIFT;
227
228 /* Set phy->phy_addr and phy->id. */
229 ret_val = igb_get_phy_id_82575(hw);
230 if (ret_val)
231 return ret_val;
232
233 /* Verify phy id and set remaining function pointers */
234 switch (phy->id) {
235 case M88E1543_E_PHY_ID:
236 case M88E1512_E_PHY_ID:
237 case I347AT4_E_PHY_ID:
238 case M88E1112_E_PHY_ID:
239 case M88E1111_I_PHY_ID:
240 phy->type = e1000_phy_m88;
241 phy->ops.check_polarity = igb_check_polarity_m88;
242 phy->ops.get_phy_info = igb_get_phy_info_m88;
243 if (phy->id != M88E1111_I_PHY_ID)
244 phy->ops.get_cable_length =
245 igb_get_cable_length_m88_gen2;
246 else
247 phy->ops.get_cable_length = igb_get_cable_length_m88;
248 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
249 /* Check if this PHY is configured for media swap. */
250 if (phy->id == M88E1112_E_PHY_ID) {
251 u16 data;
252
253 ret_val = phy->ops.write_reg(hw,
254 E1000_M88E1112_PAGE_ADDR,
255 2);
256 if (ret_val)
257 goto out;
258
259 ret_val = phy->ops.read_reg(hw,
260 E1000_M88E1112_MAC_CTRL_1,
261 &data);
262 if (ret_val)
263 goto out;
264
265 data = (data & E1000_M88E1112_MAC_CTRL_1_MODE_MASK) >>
266 E1000_M88E1112_MAC_CTRL_1_MODE_SHIFT;
267 if (data == E1000_M88E1112_AUTO_COPPER_SGMII ||
268 data == E1000_M88E1112_AUTO_COPPER_BASEX)
269 hw->mac.ops.check_for_link =
270 igb_check_for_link_media_swap;
271 }
272 if (phy->id == M88E1512_E_PHY_ID) {
273 ret_val = igb_initialize_M88E1512_phy(hw);
274 if (ret_val)
275 goto out;
276 }
277 if (phy->id == M88E1543_E_PHY_ID) {
278 ret_val = igb_initialize_M88E1543_phy(hw);
279 if (ret_val)
280 goto out;
281 }
282 break;
283 case IGP03E1000_E_PHY_ID:
284 phy->type = e1000_phy_igp_3;
285 phy->ops.get_phy_info = igb_get_phy_info_igp;
286 phy->ops.get_cable_length = igb_get_cable_length_igp_2;
287 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp;
288 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575;
289 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state;
290 break;
291 case I82580_I_PHY_ID:
292 case I350_I_PHY_ID:
293 phy->type = e1000_phy_82580;
294 phy->ops.force_speed_duplex =
295 igb_phy_force_speed_duplex_82580;
296 phy->ops.get_cable_length = igb_get_cable_length_82580;
297 phy->ops.get_phy_info = igb_get_phy_info_82580;
298 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580;
299 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580;
300 break;
301 case I210_I_PHY_ID:
302 phy->type = e1000_phy_i210;
303 phy->ops.check_polarity = igb_check_polarity_m88;
304 phy->ops.get_cfg_done = igb_get_cfg_done_i210;
305 phy->ops.get_phy_info = igb_get_phy_info_m88;
306 phy->ops.get_cable_length = igb_get_cable_length_m88_gen2;
307 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580;
308 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580;
309 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
310 break;
311 case BCM54616_E_PHY_ID:
312 phy->type = e1000_phy_bcm54616;
313 break;
314 default:
315 ret_val = -E1000_ERR_PHY;
316 goto out;
317 }
318
319 out:
320 return ret_val;
321 }
322
323 /**
324 * igb_init_nvm_params_82575 - Init NVM func ptrs.
325 * @hw: pointer to the HW structure
326 **/
igb_init_nvm_params_82575(struct e1000_hw * hw)327 static s32 igb_init_nvm_params_82575(struct e1000_hw *hw)
328 {
329 struct e1000_nvm_info *nvm = &hw->nvm;
330 u32 eecd = rd32(E1000_EECD);
331 u16 size;
332
333 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
334 E1000_EECD_SIZE_EX_SHIFT);
335
336 /* Added to a constant, "size" becomes the left-shift value
337 * for setting word_size.
338 */
339 size += NVM_WORD_SIZE_BASE_SHIFT;
340
341 /* Just in case size is out of range, cap it to the largest
342 * EEPROM size supported
343 */
344 if (size > 15)
345 size = 15;
346
347 nvm->word_size = BIT(size);
348 nvm->opcode_bits = 8;
349 nvm->delay_usec = 1;
350
351 switch (nvm->override) {
352 case e1000_nvm_override_spi_large:
353 nvm->page_size = 32;
354 nvm->address_bits = 16;
355 break;
356 case e1000_nvm_override_spi_small:
357 nvm->page_size = 8;
358 nvm->address_bits = 8;
359 break;
360 default:
361 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
362 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ?
363 16 : 8;
364 break;
365 }
366 if (nvm->word_size == BIT(15))
367 nvm->page_size = 128;
368
369 nvm->type = e1000_nvm_eeprom_spi;
370
371 /* NVM Function Pointers */
372 nvm->ops.acquire = igb_acquire_nvm_82575;
373 nvm->ops.release = igb_release_nvm_82575;
374 nvm->ops.write = igb_write_nvm_spi;
375 nvm->ops.validate = igb_validate_nvm_checksum;
376 nvm->ops.update = igb_update_nvm_checksum;
377 if (nvm->word_size < BIT(15))
378 nvm->ops.read = igb_read_nvm_eerd;
379 else
380 nvm->ops.read = igb_read_nvm_spi;
381
382 /* override generic family function pointers for specific descendants */
383 switch (hw->mac.type) {
384 case e1000_82580:
385 nvm->ops.validate = igb_validate_nvm_checksum_82580;
386 nvm->ops.update = igb_update_nvm_checksum_82580;
387 break;
388 case e1000_i354:
389 case e1000_i350:
390 nvm->ops.validate = igb_validate_nvm_checksum_i350;
391 nvm->ops.update = igb_update_nvm_checksum_i350;
392 break;
393 default:
394 break;
395 }
396
397 return 0;
398 }
399
400 /**
401 * igb_init_mac_params_82575 - Init MAC func ptrs.
402 * @hw: pointer to the HW structure
403 **/
igb_init_mac_params_82575(struct e1000_hw * hw)404 static s32 igb_init_mac_params_82575(struct e1000_hw *hw)
405 {
406 struct e1000_mac_info *mac = &hw->mac;
407 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
408
409 /* Set mta register count */
410 mac->mta_reg_count = 128;
411 /* Set uta register count */
412 mac->uta_reg_count = (hw->mac.type == e1000_82575) ? 0 : 128;
413 /* Set rar entry count */
414 switch (mac->type) {
415 case e1000_82576:
416 mac->rar_entry_count = E1000_RAR_ENTRIES_82576;
417 break;
418 case e1000_82580:
419 mac->rar_entry_count = E1000_RAR_ENTRIES_82580;
420 break;
421 case e1000_i350:
422 case e1000_i354:
423 mac->rar_entry_count = E1000_RAR_ENTRIES_I350;
424 break;
425 default:
426 mac->rar_entry_count = E1000_RAR_ENTRIES_82575;
427 break;
428 }
429 /* reset */
430 if (mac->type >= e1000_82580)
431 mac->ops.reset_hw = igb_reset_hw_82580;
432 else
433 mac->ops.reset_hw = igb_reset_hw_82575;
434
435 if (mac->type >= e1000_i210) {
436 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_i210;
437 mac->ops.release_swfw_sync = igb_release_swfw_sync_i210;
438
439 } else {
440 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_82575;
441 mac->ops.release_swfw_sync = igb_release_swfw_sync_82575;
442 }
443
444 if ((hw->mac.type == e1000_i350) || (hw->mac.type == e1000_i354))
445 mac->ops.write_vfta = igb_write_vfta_i350;
446 else
447 mac->ops.write_vfta = igb_write_vfta;
448
449 /* Set if part includes ASF firmware */
450 mac->asf_firmware_present = true;
451 /* Set if manageability features are enabled. */
452 mac->arc_subsystem_valid =
453 (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
454 ? true : false;
455 /* enable EEE on i350 parts and later parts */
456 if (mac->type >= e1000_i350)
457 dev_spec->eee_disable = false;
458 else
459 dev_spec->eee_disable = true;
460 /* Allow a single clear of the SW semaphore on I210 and newer */
461 if (mac->type >= e1000_i210)
462 dev_spec->clear_semaphore_once = true;
463 /* physical interface link setup */
464 mac->ops.setup_physical_interface =
465 (hw->phy.media_type == e1000_media_type_copper)
466 ? igb_setup_copper_link_82575
467 : igb_setup_serdes_link_82575;
468
469 if (mac->type == e1000_82580) {
470 switch (hw->device_id) {
471 /* feature not supported on these id's */
472 case E1000_DEV_ID_DH89XXCC_SGMII:
473 case E1000_DEV_ID_DH89XXCC_SERDES:
474 case E1000_DEV_ID_DH89XXCC_BACKPLANE:
475 case E1000_DEV_ID_DH89XXCC_SFP:
476 break;
477 default:
478 hw->dev_spec._82575.mas_capable = true;
479 break;
480 }
481 }
482 return 0;
483 }
484
485 /**
486 * igb_set_sfp_media_type_82575 - derives SFP module media type.
487 * @hw: pointer to the HW structure
488 *
489 * The media type is chosen based on SFP module.
490 * compatibility flags retrieved from SFP ID EEPROM.
491 **/
igb_set_sfp_media_type_82575(struct e1000_hw * hw)492 static s32 igb_set_sfp_media_type_82575(struct e1000_hw *hw)
493 {
494 s32 ret_val = E1000_ERR_CONFIG;
495 u32 ctrl_ext = 0;
496 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
497 struct e1000_sfp_flags *eth_flags = &dev_spec->eth_flags;
498 u8 tranceiver_type = 0;
499 s32 timeout = 3;
500
501 /* Turn I2C interface ON and power on sfp cage */
502 ctrl_ext = rd32(E1000_CTRL_EXT);
503 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
504 wr32(E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_I2C_ENA);
505
506 wrfl();
507
508 /* Read SFP module data */
509 while (timeout) {
510 ret_val = igb_read_sfp_data_byte(hw,
511 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_IDENTIFIER_OFFSET),
512 &tranceiver_type);
513 if (ret_val == 0)
514 break;
515 msleep(100);
516 timeout--;
517 }
518 if (ret_val != 0)
519 goto out;
520
521 ret_val = igb_read_sfp_data_byte(hw,
522 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_ETH_FLAGS_OFFSET),
523 (u8 *)eth_flags);
524 if (ret_val != 0)
525 goto out;
526
527 /* Check if there is some SFP module plugged and powered */
528 if ((tranceiver_type == E1000_SFF_IDENTIFIER_SFP) ||
529 (tranceiver_type == E1000_SFF_IDENTIFIER_SFF)) {
530 dev_spec->module_plugged = true;
531 if (eth_flags->e1000_base_lx || eth_flags->e1000_base_sx) {
532 hw->phy.media_type = e1000_media_type_internal_serdes;
533 } else if (eth_flags->e100_base_fx) {
534 dev_spec->sgmii_active = true;
535 hw->phy.media_type = e1000_media_type_internal_serdes;
536 } else if (eth_flags->e1000_base_t) {
537 dev_spec->sgmii_active = true;
538 hw->phy.media_type = e1000_media_type_copper;
539 } else {
540 hw->phy.media_type = e1000_media_type_unknown;
541 hw_dbg("PHY module has not been recognized\n");
542 goto out;
543 }
544 } else {
545 hw->phy.media_type = e1000_media_type_unknown;
546 }
547 ret_val = 0;
548 out:
549 /* Restore I2C interface setting */
550 wr32(E1000_CTRL_EXT, ctrl_ext);
551 return ret_val;
552 }
553
igb_get_invariants_82575(struct e1000_hw * hw)554 static s32 igb_get_invariants_82575(struct e1000_hw *hw)
555 {
556 struct e1000_mac_info *mac = &hw->mac;
557 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
558 s32 ret_val;
559 u32 ctrl_ext = 0;
560 u32 link_mode = 0;
561
562 switch (hw->device_id) {
563 case E1000_DEV_ID_82575EB_COPPER:
564 case E1000_DEV_ID_82575EB_FIBER_SERDES:
565 case E1000_DEV_ID_82575GB_QUAD_COPPER:
566 mac->type = e1000_82575;
567 break;
568 case E1000_DEV_ID_82576:
569 case E1000_DEV_ID_82576_NS:
570 case E1000_DEV_ID_82576_NS_SERDES:
571 case E1000_DEV_ID_82576_FIBER:
572 case E1000_DEV_ID_82576_SERDES:
573 case E1000_DEV_ID_82576_QUAD_COPPER:
574 case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
575 case E1000_DEV_ID_82576_SERDES_QUAD:
576 mac->type = e1000_82576;
577 break;
578 case E1000_DEV_ID_82580_COPPER:
579 case E1000_DEV_ID_82580_FIBER:
580 case E1000_DEV_ID_82580_QUAD_FIBER:
581 case E1000_DEV_ID_82580_SERDES:
582 case E1000_DEV_ID_82580_SGMII:
583 case E1000_DEV_ID_82580_COPPER_DUAL:
584 case E1000_DEV_ID_DH89XXCC_SGMII:
585 case E1000_DEV_ID_DH89XXCC_SERDES:
586 case E1000_DEV_ID_DH89XXCC_BACKPLANE:
587 case E1000_DEV_ID_DH89XXCC_SFP:
588 mac->type = e1000_82580;
589 break;
590 case E1000_DEV_ID_I350_COPPER:
591 case E1000_DEV_ID_I350_FIBER:
592 case E1000_DEV_ID_I350_SERDES:
593 case E1000_DEV_ID_I350_SGMII:
594 mac->type = e1000_i350;
595 break;
596 case E1000_DEV_ID_I210_COPPER:
597 case E1000_DEV_ID_I210_FIBER:
598 case E1000_DEV_ID_I210_SERDES:
599 case E1000_DEV_ID_I210_SGMII:
600 case E1000_DEV_ID_I210_COPPER_FLASHLESS:
601 case E1000_DEV_ID_I210_SERDES_FLASHLESS:
602 mac->type = e1000_i210;
603 break;
604 case E1000_DEV_ID_I211_COPPER:
605 mac->type = e1000_i211;
606 break;
607 case E1000_DEV_ID_I354_BACKPLANE_1GBPS:
608 case E1000_DEV_ID_I354_SGMII:
609 case E1000_DEV_ID_I354_BACKPLANE_2_5GBPS:
610 mac->type = e1000_i354;
611 break;
612 default:
613 return -E1000_ERR_MAC_INIT;
614 }
615
616 /* Set media type */
617 /* The 82575 uses bits 22:23 for link mode. The mode can be changed
618 * based on the EEPROM. We cannot rely upon device ID. There
619 * is no distinguishable difference between fiber and internal
620 * SerDes mode on the 82575. There can be an external PHY attached
621 * on the SGMII interface. For this, we'll set sgmii_active to true.
622 */
623 hw->phy.media_type = e1000_media_type_copper;
624 dev_spec->sgmii_active = false;
625 dev_spec->module_plugged = false;
626
627 ctrl_ext = rd32(E1000_CTRL_EXT);
628
629 link_mode = ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK;
630 switch (link_mode) {
631 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
632 hw->phy.media_type = e1000_media_type_internal_serdes;
633 break;
634 case E1000_CTRL_EXT_LINK_MODE_SGMII:
635 /* Get phy control interface type set (MDIO vs. I2C)*/
636 if (igb_sgmii_uses_mdio_82575(hw)) {
637 hw->phy.media_type = e1000_media_type_copper;
638 dev_spec->sgmii_active = true;
639 break;
640 }
641 /* fall through for I2C based SGMII */
642 case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES:
643 /* read media type from SFP EEPROM */
644 ret_val = igb_set_sfp_media_type_82575(hw);
645 if ((ret_val != 0) ||
646 (hw->phy.media_type == e1000_media_type_unknown)) {
647 /* If media type was not identified then return media
648 * type defined by the CTRL_EXT settings.
649 */
650 hw->phy.media_type = e1000_media_type_internal_serdes;
651
652 if (link_mode == E1000_CTRL_EXT_LINK_MODE_SGMII) {
653 hw->phy.media_type = e1000_media_type_copper;
654 dev_spec->sgmii_active = true;
655 }
656
657 break;
658 }
659
660 /* do not change link mode for 100BaseFX */
661 if (dev_spec->eth_flags.e100_base_fx)
662 break;
663
664 /* change current link mode setting */
665 ctrl_ext &= ~E1000_CTRL_EXT_LINK_MODE_MASK;
666
667 if (hw->phy.media_type == e1000_media_type_copper)
668 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_SGMII;
669 else
670 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
671
672 wr32(E1000_CTRL_EXT, ctrl_ext);
673
674 break;
675 default:
676 break;
677 }
678
679 /* mac initialization and operations */
680 ret_val = igb_init_mac_params_82575(hw);
681 if (ret_val)
682 goto out;
683
684 /* NVM initialization */
685 ret_val = igb_init_nvm_params_82575(hw);
686 switch (hw->mac.type) {
687 case e1000_i210:
688 case e1000_i211:
689 ret_val = igb_init_nvm_params_i210(hw);
690 break;
691 default:
692 break;
693 }
694
695 if (ret_val)
696 goto out;
697
698 /* if part supports SR-IOV then initialize mailbox parameters */
699 switch (mac->type) {
700 case e1000_82576:
701 case e1000_i350:
702 igb_init_mbx_params_pf(hw);
703 break;
704 default:
705 break;
706 }
707
708 /* setup PHY parameters */
709 ret_val = igb_init_phy_params_82575(hw);
710
711 out:
712 return ret_val;
713 }
714
715 /**
716 * igb_acquire_phy_82575 - Acquire rights to access PHY
717 * @hw: pointer to the HW structure
718 *
719 * Acquire access rights to the correct PHY. This is a
720 * function pointer entry point called by the api module.
721 **/
igb_acquire_phy_82575(struct e1000_hw * hw)722 static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
723 {
724 u16 mask = E1000_SWFW_PHY0_SM;
725
726 if (hw->bus.func == E1000_FUNC_1)
727 mask = E1000_SWFW_PHY1_SM;
728 else if (hw->bus.func == E1000_FUNC_2)
729 mask = E1000_SWFW_PHY2_SM;
730 else if (hw->bus.func == E1000_FUNC_3)
731 mask = E1000_SWFW_PHY3_SM;
732
733 return hw->mac.ops.acquire_swfw_sync(hw, mask);
734 }
735
736 /**
737 * igb_release_phy_82575 - Release rights to access PHY
738 * @hw: pointer to the HW structure
739 *
740 * A wrapper to release access rights to the correct PHY. This is a
741 * function pointer entry point called by the api module.
742 **/
igb_release_phy_82575(struct e1000_hw * hw)743 static void igb_release_phy_82575(struct e1000_hw *hw)
744 {
745 u16 mask = E1000_SWFW_PHY0_SM;
746
747 if (hw->bus.func == E1000_FUNC_1)
748 mask = E1000_SWFW_PHY1_SM;
749 else if (hw->bus.func == E1000_FUNC_2)
750 mask = E1000_SWFW_PHY2_SM;
751 else if (hw->bus.func == E1000_FUNC_3)
752 mask = E1000_SWFW_PHY3_SM;
753
754 hw->mac.ops.release_swfw_sync(hw, mask);
755 }
756
757 /**
758 * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii
759 * @hw: pointer to the HW structure
760 * @offset: register offset to be read
761 * @data: pointer to the read data
762 *
763 * Reads the PHY register at offset using the serial gigabit media independent
764 * interface and stores the retrieved information in data.
765 **/
igb_read_phy_reg_sgmii_82575(struct e1000_hw * hw,u32 offset,u16 * data)766 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
767 u16 *data)
768 {
769 s32 ret_val = -E1000_ERR_PARAM;
770
771 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
772 hw_dbg("PHY Address %u is out of range\n", offset);
773 goto out;
774 }
775
776 ret_val = hw->phy.ops.acquire(hw);
777 if (ret_val)
778 goto out;
779
780 ret_val = igb_read_phy_reg_i2c(hw, offset, data);
781
782 hw->phy.ops.release(hw);
783
784 out:
785 return ret_val;
786 }
787
788 /**
789 * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii
790 * @hw: pointer to the HW structure
791 * @offset: register offset to write to
792 * @data: data to write at register offset
793 *
794 * Writes the data to PHY register at the offset using the serial gigabit
795 * media independent interface.
796 **/
igb_write_phy_reg_sgmii_82575(struct e1000_hw * hw,u32 offset,u16 data)797 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
798 u16 data)
799 {
800 s32 ret_val = -E1000_ERR_PARAM;
801
802
803 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
804 hw_dbg("PHY Address %d is out of range\n", offset);
805 goto out;
806 }
807
808 ret_val = hw->phy.ops.acquire(hw);
809 if (ret_val)
810 goto out;
811
812 ret_val = igb_write_phy_reg_i2c(hw, offset, data);
813
814 hw->phy.ops.release(hw);
815
816 out:
817 return ret_val;
818 }
819
820 /**
821 * igb_get_phy_id_82575 - Retrieve PHY addr and id
822 * @hw: pointer to the HW structure
823 *
824 * Retrieves the PHY address and ID for both PHY's which do and do not use
825 * sgmi interface.
826 **/
igb_get_phy_id_82575(struct e1000_hw * hw)827 static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
828 {
829 struct e1000_phy_info *phy = &hw->phy;
830 s32 ret_val = 0;
831 u16 phy_id;
832 u32 ctrl_ext;
833 u32 mdic;
834
835 /* Extra read required for some PHY's on i354 */
836 if (hw->mac.type == e1000_i354)
837 igb_get_phy_id(hw);
838
839 /* For SGMII PHYs, we try the list of possible addresses until
840 * we find one that works. For non-SGMII PHYs
841 * (e.g. integrated copper PHYs), an address of 1 should
842 * work. The result of this function should mean phy->phy_addr
843 * and phy->id are set correctly.
844 */
845 if (!(igb_sgmii_active_82575(hw))) {
846 phy->addr = 1;
847 ret_val = igb_get_phy_id(hw);
848 goto out;
849 }
850
851 if (igb_sgmii_uses_mdio_82575(hw)) {
852 switch (hw->mac.type) {
853 case e1000_82575:
854 case e1000_82576:
855 mdic = rd32(E1000_MDIC);
856 mdic &= E1000_MDIC_PHY_MASK;
857 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT;
858 break;
859 case e1000_82580:
860 case e1000_i350:
861 case e1000_i354:
862 case e1000_i210:
863 case e1000_i211:
864 mdic = rd32(E1000_MDICNFG);
865 mdic &= E1000_MDICNFG_PHY_MASK;
866 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT;
867 break;
868 default:
869 ret_val = -E1000_ERR_PHY;
870 goto out;
871 }
872 ret_val = igb_get_phy_id(hw);
873 goto out;
874 }
875
876 /* Power on sgmii phy if it is disabled */
877 ctrl_ext = rd32(E1000_CTRL_EXT);
878 wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA);
879 wrfl();
880 msleep(300);
881
882 /* The address field in the I2CCMD register is 3 bits and 0 is invalid.
883 * Therefore, we need to test 1-7
884 */
885 for (phy->addr = 1; phy->addr < 8; phy->addr++) {
886 ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id);
887 if (ret_val == 0) {
888 hw_dbg("Vendor ID 0x%08X read at address %u\n",
889 phy_id, phy->addr);
890 /* At the time of this writing, The M88 part is
891 * the only supported SGMII PHY product.
892 */
893 if (phy_id == M88_VENDOR)
894 break;
895 } else {
896 hw_dbg("PHY address %u was unreadable\n", phy->addr);
897 }
898 }
899
900 /* A valid PHY type couldn't be found. */
901 if (phy->addr == 8) {
902 phy->addr = 0;
903 ret_val = -E1000_ERR_PHY;
904 goto out;
905 } else {
906 ret_val = igb_get_phy_id(hw);
907 }
908
909 /* restore previous sfp cage power state */
910 wr32(E1000_CTRL_EXT, ctrl_ext);
911
912 out:
913 return ret_val;
914 }
915
916 /**
917 * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset
918 * @hw: pointer to the HW structure
919 *
920 * Resets the PHY using the serial gigabit media independent interface.
921 **/
igb_phy_hw_reset_sgmii_82575(struct e1000_hw * hw)922 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
923 {
924 struct e1000_phy_info *phy = &hw->phy;
925 s32 ret_val;
926
927 /* This isn't a true "hard" reset, but is the only reset
928 * available to us at this time.
929 */
930
931 hw_dbg("Soft resetting SGMII attached PHY...\n");
932
933 /* SFP documentation requires the following to configure the SPF module
934 * to work on SGMII. No further documentation is given.
935 */
936 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084);
937 if (ret_val)
938 goto out;
939
940 ret_val = igb_phy_sw_reset(hw);
941 if (ret_val)
942 goto out;
943
944 if (phy->id == M88E1512_E_PHY_ID)
945 ret_val = igb_initialize_M88E1512_phy(hw);
946 if (phy->id == M88E1543_E_PHY_ID)
947 ret_val = igb_initialize_M88E1543_phy(hw);
948 out:
949 return ret_val;
950 }
951
952 /**
953 * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state
954 * @hw: pointer to the HW structure
955 * @active: true to enable LPLU, false to disable
956 *
957 * Sets the LPLU D0 state according to the active flag. When
958 * activating LPLU this function also disables smart speed
959 * and vice versa. LPLU will not be activated unless the
960 * device autonegotiation advertisement meets standards of
961 * either 10 or 10/100 or 10/100/1000 at all duplexes.
962 * This is a function pointer entry point only called by
963 * PHY setup routines.
964 **/
igb_set_d0_lplu_state_82575(struct e1000_hw * hw,bool active)965 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
966 {
967 struct e1000_phy_info *phy = &hw->phy;
968 s32 ret_val;
969 u16 data;
970
971 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
972 if (ret_val)
973 goto out;
974
975 if (active) {
976 data |= IGP02E1000_PM_D0_LPLU;
977 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
978 data);
979 if (ret_val)
980 goto out;
981
982 /* When LPLU is enabled, we should disable SmartSpeed */
983 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
984 &data);
985 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
986 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
987 data);
988 if (ret_val)
989 goto out;
990 } else {
991 data &= ~IGP02E1000_PM_D0_LPLU;
992 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
993 data);
994 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
995 * during Dx states where the power conservation is most
996 * important. During driver activity we should enable
997 * SmartSpeed, so performance is maintained.
998 */
999 if (phy->smart_speed == e1000_smart_speed_on) {
1000 ret_val = phy->ops.read_reg(hw,
1001 IGP01E1000_PHY_PORT_CONFIG, &data);
1002 if (ret_val)
1003 goto out;
1004
1005 data |= IGP01E1000_PSCFR_SMART_SPEED;
1006 ret_val = phy->ops.write_reg(hw,
1007 IGP01E1000_PHY_PORT_CONFIG, data);
1008 if (ret_val)
1009 goto out;
1010 } else if (phy->smart_speed == e1000_smart_speed_off) {
1011 ret_val = phy->ops.read_reg(hw,
1012 IGP01E1000_PHY_PORT_CONFIG, &data);
1013 if (ret_val)
1014 goto out;
1015
1016 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1017 ret_val = phy->ops.write_reg(hw,
1018 IGP01E1000_PHY_PORT_CONFIG, data);
1019 if (ret_val)
1020 goto out;
1021 }
1022 }
1023
1024 out:
1025 return ret_val;
1026 }
1027
1028 /**
1029 * igb_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state
1030 * @hw: pointer to the HW structure
1031 * @active: true to enable LPLU, false to disable
1032 *
1033 * Sets the LPLU D0 state according to the active flag. When
1034 * activating LPLU this function also disables smart speed
1035 * and vice versa. LPLU will not be activated unless the
1036 * device autonegotiation advertisement meets standards of
1037 * either 10 or 10/100 or 10/100/1000 at all duplexes.
1038 * This is a function pointer entry point only called by
1039 * PHY setup routines.
1040 **/
igb_set_d0_lplu_state_82580(struct e1000_hw * hw,bool active)1041 static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active)
1042 {
1043 struct e1000_phy_info *phy = &hw->phy;
1044 u16 data;
1045
1046 data = rd32(E1000_82580_PHY_POWER_MGMT);
1047
1048 if (active) {
1049 data |= E1000_82580_PM_D0_LPLU;
1050
1051 /* When LPLU is enabled, we should disable SmartSpeed */
1052 data &= ~E1000_82580_PM_SPD;
1053 } else {
1054 data &= ~E1000_82580_PM_D0_LPLU;
1055
1056 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1057 * during Dx states where the power conservation is most
1058 * important. During driver activity we should enable
1059 * SmartSpeed, so performance is maintained.
1060 */
1061 if (phy->smart_speed == e1000_smart_speed_on)
1062 data |= E1000_82580_PM_SPD;
1063 else if (phy->smart_speed == e1000_smart_speed_off)
1064 data &= ~E1000_82580_PM_SPD; }
1065
1066 wr32(E1000_82580_PHY_POWER_MGMT, data);
1067 return 0;
1068 }
1069
1070 /**
1071 * igb_set_d3_lplu_state_82580 - Sets low power link up state for D3
1072 * @hw: pointer to the HW structure
1073 * @active: boolean used to enable/disable lplu
1074 *
1075 * Success returns 0, Failure returns 1
1076 *
1077 * The low power link up (lplu) state is set to the power management level D3
1078 * and SmartSpeed is disabled when active is true, else clear lplu for D3
1079 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1080 * is used during Dx states where the power conservation is most important.
1081 * During driver activity, SmartSpeed should be enabled so performance is
1082 * maintained.
1083 **/
igb_set_d3_lplu_state_82580(struct e1000_hw * hw,bool active)1084 static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active)
1085 {
1086 struct e1000_phy_info *phy = &hw->phy;
1087 u16 data;
1088
1089 data = rd32(E1000_82580_PHY_POWER_MGMT);
1090
1091 if (!active) {
1092 data &= ~E1000_82580_PM_D3_LPLU;
1093 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1094 * during Dx states where the power conservation is most
1095 * important. During driver activity we should enable
1096 * SmartSpeed, so performance is maintained.
1097 */
1098 if (phy->smart_speed == e1000_smart_speed_on)
1099 data |= E1000_82580_PM_SPD;
1100 else if (phy->smart_speed == e1000_smart_speed_off)
1101 data &= ~E1000_82580_PM_SPD;
1102 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1103 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1104 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1105 data |= E1000_82580_PM_D3_LPLU;
1106 /* When LPLU is enabled, we should disable SmartSpeed */
1107 data &= ~E1000_82580_PM_SPD;
1108 }
1109
1110 wr32(E1000_82580_PHY_POWER_MGMT, data);
1111 return 0;
1112 }
1113
1114 /**
1115 * igb_acquire_nvm_82575 - Request for access to EEPROM
1116 * @hw: pointer to the HW structure
1117 *
1118 * Acquire the necessary semaphores for exclusive access to the EEPROM.
1119 * Set the EEPROM access request bit and wait for EEPROM access grant bit.
1120 * Return successful if access grant bit set, else clear the request for
1121 * EEPROM access and return -E1000_ERR_NVM (-1).
1122 **/
igb_acquire_nvm_82575(struct e1000_hw * hw)1123 static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
1124 {
1125 s32 ret_val;
1126
1127 ret_val = hw->mac.ops.acquire_swfw_sync(hw, E1000_SWFW_EEP_SM);
1128 if (ret_val)
1129 goto out;
1130
1131 ret_val = igb_acquire_nvm(hw);
1132
1133 if (ret_val)
1134 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
1135
1136 out:
1137 return ret_val;
1138 }
1139
1140 /**
1141 * igb_release_nvm_82575 - Release exclusive access to EEPROM
1142 * @hw: pointer to the HW structure
1143 *
1144 * Stop any current commands to the EEPROM and clear the EEPROM request bit,
1145 * then release the semaphores acquired.
1146 **/
igb_release_nvm_82575(struct e1000_hw * hw)1147 static void igb_release_nvm_82575(struct e1000_hw *hw)
1148 {
1149 igb_release_nvm(hw);
1150 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
1151 }
1152
1153 /**
1154 * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
1155 * @hw: pointer to the HW structure
1156 * @mask: specifies which semaphore to acquire
1157 *
1158 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask
1159 * will also specify which port we're acquiring the lock for.
1160 **/
igb_acquire_swfw_sync_82575(struct e1000_hw * hw,u16 mask)1161 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
1162 {
1163 u32 swfw_sync;
1164 u32 swmask = mask;
1165 u32 fwmask = mask << 16;
1166 s32 ret_val = 0;
1167 s32 i = 0, timeout = 200;
1168
1169 while (i < timeout) {
1170 if (igb_get_hw_semaphore(hw)) {
1171 ret_val = -E1000_ERR_SWFW_SYNC;
1172 goto out;
1173 }
1174
1175 swfw_sync = rd32(E1000_SW_FW_SYNC);
1176 if (!(swfw_sync & (fwmask | swmask)))
1177 break;
1178
1179 /* Firmware currently using resource (fwmask)
1180 * or other software thread using resource (swmask)
1181 */
1182 igb_put_hw_semaphore(hw);
1183 mdelay(5);
1184 i++;
1185 }
1186
1187 if (i == timeout) {
1188 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
1189 ret_val = -E1000_ERR_SWFW_SYNC;
1190 goto out;
1191 }
1192
1193 swfw_sync |= swmask;
1194 wr32(E1000_SW_FW_SYNC, swfw_sync);
1195
1196 igb_put_hw_semaphore(hw);
1197
1198 out:
1199 return ret_val;
1200 }
1201
1202 /**
1203 * igb_release_swfw_sync_82575 - Release SW/FW semaphore
1204 * @hw: pointer to the HW structure
1205 * @mask: specifies which semaphore to acquire
1206 *
1207 * Release the SW/FW semaphore used to access the PHY or NVM. The mask
1208 * will also specify which port we're releasing the lock for.
1209 **/
igb_release_swfw_sync_82575(struct e1000_hw * hw,u16 mask)1210 static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
1211 {
1212 u32 swfw_sync;
1213
1214 while (igb_get_hw_semaphore(hw) != 0)
1215 ; /* Empty */
1216
1217 swfw_sync = rd32(E1000_SW_FW_SYNC);
1218 swfw_sync &= ~mask;
1219 wr32(E1000_SW_FW_SYNC, swfw_sync);
1220
1221 igb_put_hw_semaphore(hw);
1222 }
1223
1224 /**
1225 * igb_get_cfg_done_82575 - Read config done bit
1226 * @hw: pointer to the HW structure
1227 *
1228 * Read the management control register for the config done bit for
1229 * completion status. NOTE: silicon which is EEPROM-less will fail trying
1230 * to read the config done bit, so an error is *ONLY* logged and returns
1231 * 0. If we were to return with error, EEPROM-less silicon
1232 * would not be able to be reset or change link.
1233 **/
igb_get_cfg_done_82575(struct e1000_hw * hw)1234 static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
1235 {
1236 s32 timeout = PHY_CFG_TIMEOUT;
1237 u32 mask = E1000_NVM_CFG_DONE_PORT_0;
1238
1239 if (hw->bus.func == 1)
1240 mask = E1000_NVM_CFG_DONE_PORT_1;
1241 else if (hw->bus.func == E1000_FUNC_2)
1242 mask = E1000_NVM_CFG_DONE_PORT_2;
1243 else if (hw->bus.func == E1000_FUNC_3)
1244 mask = E1000_NVM_CFG_DONE_PORT_3;
1245
1246 while (timeout) {
1247 if (rd32(E1000_EEMNGCTL) & mask)
1248 break;
1249 usleep_range(1000, 2000);
1250 timeout--;
1251 }
1252 if (!timeout)
1253 hw_dbg("MNG configuration cycle has not completed.\n");
1254
1255 /* If EEPROM is not marked present, init the PHY manually */
1256 if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
1257 (hw->phy.type == e1000_phy_igp_3))
1258 igb_phy_init_script_igp3(hw);
1259
1260 return 0;
1261 }
1262
1263 /**
1264 * igb_get_link_up_info_82575 - Get link speed/duplex info
1265 * @hw: pointer to the HW structure
1266 * @speed: stores the current speed
1267 * @duplex: stores the current duplex
1268 *
1269 * This is a wrapper function, if using the serial gigabit media independent
1270 * interface, use PCS to retrieve the link speed and duplex information.
1271 * Otherwise, use the generic function to get the link speed and duplex info.
1272 **/
igb_get_link_up_info_82575(struct e1000_hw * hw,u16 * speed,u16 * duplex)1273 static s32 igb_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed,
1274 u16 *duplex)
1275 {
1276 s32 ret_val;
1277
1278 if (hw->phy.media_type != e1000_media_type_copper)
1279 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, speed,
1280 duplex);
1281 else
1282 ret_val = igb_get_speed_and_duplex_copper(hw, speed,
1283 duplex);
1284
1285 return ret_val;
1286 }
1287
1288 /**
1289 * igb_check_for_link_82575 - Check for link
1290 * @hw: pointer to the HW structure
1291 *
1292 * If sgmii is enabled, then use the pcs register to determine link, otherwise
1293 * use the generic interface for determining link.
1294 **/
igb_check_for_link_82575(struct e1000_hw * hw)1295 static s32 igb_check_for_link_82575(struct e1000_hw *hw)
1296 {
1297 s32 ret_val;
1298 u16 speed, duplex;
1299
1300 if (hw->phy.media_type != e1000_media_type_copper) {
1301 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
1302 &duplex);
1303 /* Use this flag to determine if link needs to be checked or
1304 * not. If we have link clear the flag so that we do not
1305 * continue to check for link.
1306 */
1307 hw->mac.get_link_status = !hw->mac.serdes_has_link;
1308
1309 /* Configure Flow Control now that Auto-Neg has completed.
1310 * First, we need to restore the desired flow control
1311 * settings because we may have had to re-autoneg with a
1312 * different link partner.
1313 */
1314 ret_val = igb_config_fc_after_link_up(hw);
1315 if (ret_val)
1316 hw_dbg("Error configuring flow control\n");
1317 } else {
1318 ret_val = igb_check_for_copper_link(hw);
1319 }
1320
1321 return ret_val;
1322 }
1323
1324 /**
1325 * igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown
1326 * @hw: pointer to the HW structure
1327 **/
igb_power_up_serdes_link_82575(struct e1000_hw * hw)1328 void igb_power_up_serdes_link_82575(struct e1000_hw *hw)
1329 {
1330 u32 reg;
1331
1332
1333 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1334 !igb_sgmii_active_82575(hw))
1335 return;
1336
1337 /* Enable PCS to turn on link */
1338 reg = rd32(E1000_PCS_CFG0);
1339 reg |= E1000_PCS_CFG_PCS_EN;
1340 wr32(E1000_PCS_CFG0, reg);
1341
1342 /* Power up the laser */
1343 reg = rd32(E1000_CTRL_EXT);
1344 reg &= ~E1000_CTRL_EXT_SDP3_DATA;
1345 wr32(E1000_CTRL_EXT, reg);
1346
1347 /* flush the write to verify completion */
1348 wrfl();
1349 usleep_range(1000, 2000);
1350 }
1351
1352 /**
1353 * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex
1354 * @hw: pointer to the HW structure
1355 * @speed: stores the current speed
1356 * @duplex: stores the current duplex
1357 *
1358 * Using the physical coding sub-layer (PCS), retrieve the current speed and
1359 * duplex, then store the values in the pointers provided.
1360 **/
igb_get_pcs_speed_and_duplex_82575(struct e1000_hw * hw,u16 * speed,u16 * duplex)1361 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
1362 u16 *duplex)
1363 {
1364 struct e1000_mac_info *mac = &hw->mac;
1365 u32 pcs, status;
1366
1367 /* Set up defaults for the return values of this function */
1368 mac->serdes_has_link = false;
1369 *speed = 0;
1370 *duplex = 0;
1371
1372 /* Read the PCS Status register for link state. For non-copper mode,
1373 * the status register is not accurate. The PCS status register is
1374 * used instead.
1375 */
1376 pcs = rd32(E1000_PCS_LSTAT);
1377
1378 /* The link up bit determines when link is up on autoneg. The sync ok
1379 * gets set once both sides sync up and agree upon link. Stable link
1380 * can be determined by checking for both link up and link sync ok
1381 */
1382 if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
1383 mac->serdes_has_link = true;
1384
1385 /* Detect and store PCS speed */
1386 if (pcs & E1000_PCS_LSTS_SPEED_1000)
1387 *speed = SPEED_1000;
1388 else if (pcs & E1000_PCS_LSTS_SPEED_100)
1389 *speed = SPEED_100;
1390 else
1391 *speed = SPEED_10;
1392
1393 /* Detect and store PCS duplex */
1394 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL)
1395 *duplex = FULL_DUPLEX;
1396 else
1397 *duplex = HALF_DUPLEX;
1398
1399 /* Check if it is an I354 2.5Gb backplane connection. */
1400 if (mac->type == e1000_i354) {
1401 status = rd32(E1000_STATUS);
1402 if ((status & E1000_STATUS_2P5_SKU) &&
1403 !(status & E1000_STATUS_2P5_SKU_OVER)) {
1404 *speed = SPEED_2500;
1405 *duplex = FULL_DUPLEX;
1406 hw_dbg("2500 Mbs, ");
1407 hw_dbg("Full Duplex\n");
1408 }
1409 }
1410
1411 }
1412
1413 return 0;
1414 }
1415
1416 /**
1417 * igb_shutdown_serdes_link_82575 - Remove link during power down
1418 * @hw: pointer to the HW structure
1419 *
1420 * In the case of fiber serdes, shut down optics and PCS on driver unload
1421 * when management pass thru is not enabled.
1422 **/
igb_shutdown_serdes_link_82575(struct e1000_hw * hw)1423 void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
1424 {
1425 u32 reg;
1426
1427 if (hw->phy.media_type != e1000_media_type_internal_serdes &&
1428 igb_sgmii_active_82575(hw))
1429 return;
1430
1431 if (!igb_enable_mng_pass_thru(hw)) {
1432 /* Disable PCS to turn off link */
1433 reg = rd32(E1000_PCS_CFG0);
1434 reg &= ~E1000_PCS_CFG_PCS_EN;
1435 wr32(E1000_PCS_CFG0, reg);
1436
1437 /* shutdown the laser */
1438 reg = rd32(E1000_CTRL_EXT);
1439 reg |= E1000_CTRL_EXT_SDP3_DATA;
1440 wr32(E1000_CTRL_EXT, reg);
1441
1442 /* flush the write to verify completion */
1443 wrfl();
1444 usleep_range(1000, 2000);
1445 }
1446 }
1447
1448 /**
1449 * igb_reset_hw_82575 - Reset hardware
1450 * @hw: pointer to the HW structure
1451 *
1452 * This resets the hardware into a known state. This is a
1453 * function pointer entry point called by the api module.
1454 **/
igb_reset_hw_82575(struct e1000_hw * hw)1455 static s32 igb_reset_hw_82575(struct e1000_hw *hw)
1456 {
1457 u32 ctrl;
1458 s32 ret_val;
1459
1460 /* Prevent the PCI-E bus from sticking if there is no TLP connection
1461 * on the last TLP read/write transaction when MAC is reset.
1462 */
1463 ret_val = igb_disable_pcie_master(hw);
1464 if (ret_val)
1465 hw_dbg("PCI-E Master disable polling has failed.\n");
1466
1467 /* set the completion timeout for interface */
1468 ret_val = igb_set_pcie_completion_timeout(hw);
1469 if (ret_val)
1470 hw_dbg("PCI-E Set completion timeout has failed.\n");
1471
1472 hw_dbg("Masking off all interrupts\n");
1473 wr32(E1000_IMC, 0xffffffff);
1474
1475 wr32(E1000_RCTL, 0);
1476 wr32(E1000_TCTL, E1000_TCTL_PSP);
1477 wrfl();
1478
1479 usleep_range(10000, 20000);
1480
1481 ctrl = rd32(E1000_CTRL);
1482
1483 hw_dbg("Issuing a global reset to MAC\n");
1484 wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
1485
1486 ret_val = igb_get_auto_rd_done(hw);
1487 if (ret_val) {
1488 /* When auto config read does not complete, do not
1489 * return with an error. This can happen in situations
1490 * where there is no eeprom and prevents getting link.
1491 */
1492 hw_dbg("Auto Read Done did not complete\n");
1493 }
1494
1495 /* If EEPROM is not present, run manual init scripts */
1496 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
1497 igb_reset_init_script_82575(hw);
1498
1499 /* Clear any pending interrupt events. */
1500 wr32(E1000_IMC, 0xffffffff);
1501 rd32(E1000_ICR);
1502
1503 /* Install any alternate MAC address into RAR0 */
1504 ret_val = igb_check_alt_mac_addr(hw);
1505
1506 return ret_val;
1507 }
1508
1509 /**
1510 * igb_init_hw_82575 - Initialize hardware
1511 * @hw: pointer to the HW structure
1512 *
1513 * This inits the hardware readying it for operation.
1514 **/
igb_init_hw_82575(struct e1000_hw * hw)1515 static s32 igb_init_hw_82575(struct e1000_hw *hw)
1516 {
1517 struct e1000_mac_info *mac = &hw->mac;
1518 s32 ret_val;
1519 u16 i, rar_count = mac->rar_entry_count;
1520
1521 if ((hw->mac.type >= e1000_i210) &&
1522 !(igb_get_flash_presence_i210(hw))) {
1523 ret_val = igb_pll_workaround_i210(hw);
1524 if (ret_val)
1525 return ret_val;
1526 }
1527
1528 /* Initialize identification LED */
1529 ret_val = igb_id_led_init(hw);
1530 if (ret_val) {
1531 hw_dbg("Error initializing identification LED\n");
1532 /* This is not fatal and we should not stop init due to this */
1533 }
1534
1535 /* Disabling VLAN filtering */
1536 hw_dbg("Initializing the IEEE VLAN\n");
1537 igb_clear_vfta(hw);
1538
1539 /* Setup the receive address */
1540 igb_init_rx_addrs(hw, rar_count);
1541
1542 /* Zero out the Multicast HASH table */
1543 hw_dbg("Zeroing the MTA\n");
1544 for (i = 0; i < mac->mta_reg_count; i++)
1545 array_wr32(E1000_MTA, i, 0);
1546
1547 /* Zero out the Unicast HASH table */
1548 hw_dbg("Zeroing the UTA\n");
1549 for (i = 0; i < mac->uta_reg_count; i++)
1550 array_wr32(E1000_UTA, i, 0);
1551
1552 /* Setup link and flow control */
1553 ret_val = igb_setup_link(hw);
1554
1555 /* Clear all of the statistics registers (clear on read). It is
1556 * important that we do this after we have tried to establish link
1557 * because the symbol error count will increment wildly if there
1558 * is no link.
1559 */
1560 igb_clear_hw_cntrs_82575(hw);
1561 return ret_val;
1562 }
1563
1564 /**
1565 * igb_setup_copper_link_82575 - Configure copper link settings
1566 * @hw: pointer to the HW structure
1567 *
1568 * Configures the link for auto-neg or forced speed and duplex. Then we check
1569 * for link, once link is established calls to configure collision distance
1570 * and flow control are called.
1571 **/
igb_setup_copper_link_82575(struct e1000_hw * hw)1572 static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
1573 {
1574 u32 ctrl;
1575 s32 ret_val;
1576 u32 phpm_reg;
1577
1578 ctrl = rd32(E1000_CTRL);
1579 ctrl |= E1000_CTRL_SLU;
1580 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1581 wr32(E1000_CTRL, ctrl);
1582
1583 /* Clear Go Link Disconnect bit on supported devices */
1584 switch (hw->mac.type) {
1585 case e1000_82580:
1586 case e1000_i350:
1587 case e1000_i210:
1588 case e1000_i211:
1589 phpm_reg = rd32(E1000_82580_PHY_POWER_MGMT);
1590 phpm_reg &= ~E1000_82580_PM_GO_LINKD;
1591 wr32(E1000_82580_PHY_POWER_MGMT, phpm_reg);
1592 break;
1593 default:
1594 break;
1595 }
1596
1597 ret_val = igb_setup_serdes_link_82575(hw);
1598 if (ret_val)
1599 goto out;
1600
1601 if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) {
1602 /* allow time for SFP cage time to power up phy */
1603 msleep(300);
1604
1605 ret_val = hw->phy.ops.reset(hw);
1606 if (ret_val) {
1607 hw_dbg("Error resetting the PHY.\n");
1608 goto out;
1609 }
1610 }
1611 switch (hw->phy.type) {
1612 case e1000_phy_i210:
1613 case e1000_phy_m88:
1614 switch (hw->phy.id) {
1615 case I347AT4_E_PHY_ID:
1616 case M88E1112_E_PHY_ID:
1617 case M88E1543_E_PHY_ID:
1618 case M88E1512_E_PHY_ID:
1619 case I210_I_PHY_ID:
1620 ret_val = igb_copper_link_setup_m88_gen2(hw);
1621 break;
1622 default:
1623 ret_val = igb_copper_link_setup_m88(hw);
1624 break;
1625 }
1626 break;
1627 case e1000_phy_igp_3:
1628 ret_val = igb_copper_link_setup_igp(hw);
1629 break;
1630 case e1000_phy_82580:
1631 ret_val = igb_copper_link_setup_82580(hw);
1632 break;
1633 case e1000_phy_bcm54616:
1634 ret_val = 0;
1635 break;
1636 default:
1637 ret_val = -E1000_ERR_PHY;
1638 break;
1639 }
1640
1641 if (ret_val)
1642 goto out;
1643
1644 ret_val = igb_setup_copper_link(hw);
1645 out:
1646 return ret_val;
1647 }
1648
1649 /**
1650 * igb_setup_serdes_link_82575 - Setup link for serdes
1651 * @hw: pointer to the HW structure
1652 *
1653 * Configure the physical coding sub-layer (PCS) link. The PCS link is
1654 * used on copper connections where the serialized gigabit media independent
1655 * interface (sgmii), or serdes fiber is being used. Configures the link
1656 * for auto-negotiation or forces speed/duplex.
1657 **/
igb_setup_serdes_link_82575(struct e1000_hw * hw)1658 static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
1659 {
1660 u32 ctrl_ext, ctrl_reg, reg, anadv_reg;
1661 bool pcs_autoneg;
1662 s32 ret_val = 0;
1663 u16 data;
1664
1665 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1666 !igb_sgmii_active_82575(hw))
1667 return ret_val;
1668
1669
1670 /* On the 82575, SerDes loopback mode persists until it is
1671 * explicitly turned off or a power cycle is performed. A read to
1672 * the register does not indicate its status. Therefore, we ensure
1673 * loopback mode is disabled during initialization.
1674 */
1675 wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1676
1677 /* power on the sfp cage if present and turn on I2C */
1678 ctrl_ext = rd32(E1000_CTRL_EXT);
1679 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
1680 ctrl_ext |= E1000_CTRL_I2C_ENA;
1681 wr32(E1000_CTRL_EXT, ctrl_ext);
1682
1683 ctrl_reg = rd32(E1000_CTRL);
1684 ctrl_reg |= E1000_CTRL_SLU;
1685
1686 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) {
1687 /* set both sw defined pins */
1688 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1;
1689
1690 /* Set switch control to serdes energy detect */
1691 reg = rd32(E1000_CONNSW);
1692 reg |= E1000_CONNSW_ENRGSRC;
1693 wr32(E1000_CONNSW, reg);
1694 }
1695
1696 reg = rd32(E1000_PCS_LCTL);
1697
1698 /* default pcs_autoneg to the same setting as mac autoneg */
1699 pcs_autoneg = hw->mac.autoneg;
1700
1701 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
1702 case E1000_CTRL_EXT_LINK_MODE_SGMII:
1703 /* sgmii mode lets the phy handle forcing speed/duplex */
1704 pcs_autoneg = true;
1705 /* autoneg time out should be disabled for SGMII mode */
1706 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT);
1707 break;
1708 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
1709 /* disable PCS autoneg and support parallel detect only */
1710 pcs_autoneg = false;
1711 /* fall through */
1712 default:
1713 if (hw->mac.type == e1000_82575 ||
1714 hw->mac.type == e1000_82576) {
1715 ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data);
1716 if (ret_val) {
1717 hw_dbg(KERN_DEBUG "NVM Read Error\n\n");
1718 return ret_val;
1719 }
1720
1721 if (data & E1000_EEPROM_PCS_AUTONEG_DISABLE_BIT)
1722 pcs_autoneg = false;
1723 }
1724
1725 /* non-SGMII modes only supports a speed of 1000/Full for the
1726 * link so it is best to just force the MAC and let the pcs
1727 * link either autoneg or be forced to 1000/Full
1728 */
1729 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD |
1730 E1000_CTRL_FD | E1000_CTRL_FRCDPX;
1731
1732 /* set speed of 1000/Full if speed/duplex is forced */
1733 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL;
1734 break;
1735 }
1736
1737 wr32(E1000_CTRL, ctrl_reg);
1738
1739 /* New SerDes mode allows for forcing speed or autonegotiating speed
1740 * at 1gb. Autoneg should be default set by most drivers. This is the
1741 * mode that will be compatible with older link partners and switches.
1742 * However, both are supported by the hardware and some drivers/tools.
1743 */
1744 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP |
1745 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK);
1746
1747 if (pcs_autoneg) {
1748 /* Set PCS register for autoneg */
1749 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */
1750 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */
1751
1752 /* Disable force flow control for autoneg */
1753 reg &= ~E1000_PCS_LCTL_FORCE_FCTRL;
1754
1755 /* Configure flow control advertisement for autoneg */
1756 anadv_reg = rd32(E1000_PCS_ANADV);
1757 anadv_reg &= ~(E1000_TXCW_ASM_DIR | E1000_TXCW_PAUSE);
1758 switch (hw->fc.requested_mode) {
1759 case e1000_fc_full:
1760 case e1000_fc_rx_pause:
1761 anadv_reg |= E1000_TXCW_ASM_DIR;
1762 anadv_reg |= E1000_TXCW_PAUSE;
1763 break;
1764 case e1000_fc_tx_pause:
1765 anadv_reg |= E1000_TXCW_ASM_DIR;
1766 break;
1767 default:
1768 break;
1769 }
1770 wr32(E1000_PCS_ANADV, anadv_reg);
1771
1772 hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg);
1773 } else {
1774 /* Set PCS register for forced link */
1775 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */
1776
1777 /* Force flow control for forced link */
1778 reg |= E1000_PCS_LCTL_FORCE_FCTRL;
1779
1780 hw_dbg("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg);
1781 }
1782
1783 wr32(E1000_PCS_LCTL, reg);
1784
1785 if (!pcs_autoneg && !igb_sgmii_active_82575(hw))
1786 igb_force_mac_fc(hw);
1787
1788 return ret_val;
1789 }
1790
1791 /**
1792 * igb_sgmii_active_82575 - Return sgmii state
1793 * @hw: pointer to the HW structure
1794 *
1795 * 82575 silicon has a serialized gigabit media independent interface (sgmii)
1796 * which can be enabled for use in the embedded applications. Simply
1797 * return the current state of the sgmii interface.
1798 **/
igb_sgmii_active_82575(struct e1000_hw * hw)1799 static bool igb_sgmii_active_82575(struct e1000_hw *hw)
1800 {
1801 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
1802 return dev_spec->sgmii_active;
1803 }
1804
1805 /**
1806 * igb_reset_init_script_82575 - Inits HW defaults after reset
1807 * @hw: pointer to the HW structure
1808 *
1809 * Inits recommended HW defaults after a reset when there is no EEPROM
1810 * detected. This is only for the 82575.
1811 **/
igb_reset_init_script_82575(struct e1000_hw * hw)1812 static s32 igb_reset_init_script_82575(struct e1000_hw *hw)
1813 {
1814 if (hw->mac.type == e1000_82575) {
1815 hw_dbg("Running reset init script for 82575\n");
1816 /* SerDes configuration via SERDESCTRL */
1817 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C);
1818 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78);
1819 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23);
1820 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15);
1821
1822 /* CCM configuration via CCMCTL register */
1823 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00);
1824 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00);
1825
1826 /* PCIe lanes configuration */
1827 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC);
1828 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF);
1829 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05);
1830 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81);
1831
1832 /* PCIe PLL Configuration */
1833 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47);
1834 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00);
1835 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00);
1836 }
1837
1838 return 0;
1839 }
1840
1841 /**
1842 * igb_read_mac_addr_82575 - Read device MAC address
1843 * @hw: pointer to the HW structure
1844 **/
igb_read_mac_addr_82575(struct e1000_hw * hw)1845 static s32 igb_read_mac_addr_82575(struct e1000_hw *hw)
1846 {
1847 s32 ret_val = 0;
1848
1849 /* If there's an alternate MAC address place it in RAR0
1850 * so that it will override the Si installed default perm
1851 * address.
1852 */
1853 ret_val = igb_check_alt_mac_addr(hw);
1854 if (ret_val)
1855 goto out;
1856
1857 ret_val = igb_read_mac_addr(hw);
1858
1859 out:
1860 return ret_val;
1861 }
1862
1863 /**
1864 * igb_power_down_phy_copper_82575 - Remove link during PHY power down
1865 * @hw: pointer to the HW structure
1866 *
1867 * In the case of a PHY power down to save power, or to turn off link during a
1868 * driver unload, or wake on lan is not enabled, remove the link.
1869 **/
igb_power_down_phy_copper_82575(struct e1000_hw * hw)1870 void igb_power_down_phy_copper_82575(struct e1000_hw *hw)
1871 {
1872 /* If the management interface is not enabled, then power down */
1873 if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw)))
1874 igb_power_down_phy_copper(hw);
1875 }
1876
1877 /**
1878 * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters
1879 * @hw: pointer to the HW structure
1880 *
1881 * Clears the hardware counters by reading the counter registers.
1882 **/
igb_clear_hw_cntrs_82575(struct e1000_hw * hw)1883 static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
1884 {
1885 igb_clear_hw_cntrs_base(hw);
1886
1887 rd32(E1000_PRC64);
1888 rd32(E1000_PRC127);
1889 rd32(E1000_PRC255);
1890 rd32(E1000_PRC511);
1891 rd32(E1000_PRC1023);
1892 rd32(E1000_PRC1522);
1893 rd32(E1000_PTC64);
1894 rd32(E1000_PTC127);
1895 rd32(E1000_PTC255);
1896 rd32(E1000_PTC511);
1897 rd32(E1000_PTC1023);
1898 rd32(E1000_PTC1522);
1899
1900 rd32(E1000_ALGNERRC);
1901 rd32(E1000_RXERRC);
1902 rd32(E1000_TNCRS);
1903 rd32(E1000_CEXTERR);
1904 rd32(E1000_TSCTC);
1905 rd32(E1000_TSCTFC);
1906
1907 rd32(E1000_MGTPRC);
1908 rd32(E1000_MGTPDC);
1909 rd32(E1000_MGTPTC);
1910
1911 rd32(E1000_IAC);
1912 rd32(E1000_ICRXOC);
1913
1914 rd32(E1000_ICRXPTC);
1915 rd32(E1000_ICRXATC);
1916 rd32(E1000_ICTXPTC);
1917 rd32(E1000_ICTXATC);
1918 rd32(E1000_ICTXQEC);
1919 rd32(E1000_ICTXQMTC);
1920 rd32(E1000_ICRXDMTC);
1921
1922 rd32(E1000_CBTMPC);
1923 rd32(E1000_HTDPMC);
1924 rd32(E1000_CBRMPC);
1925 rd32(E1000_RPTHC);
1926 rd32(E1000_HGPTC);
1927 rd32(E1000_HTCBDPC);
1928 rd32(E1000_HGORCL);
1929 rd32(E1000_HGORCH);
1930 rd32(E1000_HGOTCL);
1931 rd32(E1000_HGOTCH);
1932 rd32(E1000_LENERRS);
1933
1934 /* This register should not be read in copper configurations */
1935 if (hw->phy.media_type == e1000_media_type_internal_serdes ||
1936 igb_sgmii_active_82575(hw))
1937 rd32(E1000_SCVPC);
1938 }
1939
1940 /**
1941 * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable
1942 * @hw: pointer to the HW structure
1943 *
1944 * After rx enable if manageability is enabled then there is likely some
1945 * bad data at the start of the fifo and possibly in the DMA fifo. This
1946 * function clears the fifos and flushes any packets that came in as rx was
1947 * being enabled.
1948 **/
igb_rx_fifo_flush_82575(struct e1000_hw * hw)1949 void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
1950 {
1951 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
1952 int i, ms_wait;
1953
1954 /* disable IPv6 options as per hardware errata */
1955 rfctl = rd32(E1000_RFCTL);
1956 rfctl |= E1000_RFCTL_IPV6_EX_DIS;
1957 wr32(E1000_RFCTL, rfctl);
1958
1959 if (hw->mac.type != e1000_82575 ||
1960 !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN))
1961 return;
1962
1963 /* Disable all RX queues */
1964 for (i = 0; i < 4; i++) {
1965 rxdctl[i] = rd32(E1000_RXDCTL(i));
1966 wr32(E1000_RXDCTL(i),
1967 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
1968 }
1969 /* Poll all queues to verify they have shut down */
1970 for (ms_wait = 0; ms_wait < 10; ms_wait++) {
1971 usleep_range(1000, 2000);
1972 rx_enabled = 0;
1973 for (i = 0; i < 4; i++)
1974 rx_enabled |= rd32(E1000_RXDCTL(i));
1975 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
1976 break;
1977 }
1978
1979 if (ms_wait == 10)
1980 hw_dbg("Queue disable timed out after 10ms\n");
1981
1982 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
1983 * incoming packets are rejected. Set enable and wait 2ms so that
1984 * any packet that was coming in as RCTL.EN was set is flushed
1985 */
1986 wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
1987
1988 rlpml = rd32(E1000_RLPML);
1989 wr32(E1000_RLPML, 0);
1990
1991 rctl = rd32(E1000_RCTL);
1992 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
1993 temp_rctl |= E1000_RCTL_LPE;
1994
1995 wr32(E1000_RCTL, temp_rctl);
1996 wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN);
1997 wrfl();
1998 usleep_range(2000, 3000);
1999
2000 /* Enable RX queues that were previously enabled and restore our
2001 * previous state
2002 */
2003 for (i = 0; i < 4; i++)
2004 wr32(E1000_RXDCTL(i), rxdctl[i]);
2005 wr32(E1000_RCTL, rctl);
2006 wrfl();
2007
2008 wr32(E1000_RLPML, rlpml);
2009 wr32(E1000_RFCTL, rfctl);
2010
2011 /* Flush receive errors generated by workaround */
2012 rd32(E1000_ROC);
2013 rd32(E1000_RNBC);
2014 rd32(E1000_MPC);
2015 }
2016
2017 /**
2018 * igb_set_pcie_completion_timeout - set pci-e completion timeout
2019 * @hw: pointer to the HW structure
2020 *
2021 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms,
2022 * however the hardware default for these parts is 500us to 1ms which is less
2023 * than the 10ms recommended by the pci-e spec. To address this we need to
2024 * increase the value to either 10ms to 200ms for capability version 1 config,
2025 * or 16ms to 55ms for version 2.
2026 **/
igb_set_pcie_completion_timeout(struct e1000_hw * hw)2027 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw)
2028 {
2029 u32 gcr = rd32(E1000_GCR);
2030 s32 ret_val = 0;
2031 u16 pcie_devctl2;
2032
2033 /* only take action if timeout value is defaulted to 0 */
2034 if (gcr & E1000_GCR_CMPL_TMOUT_MASK)
2035 goto out;
2036
2037 /* if capabilities version is type 1 we can write the
2038 * timeout of 10ms to 200ms through the GCR register
2039 */
2040 if (!(gcr & E1000_GCR_CAP_VER2)) {
2041 gcr |= E1000_GCR_CMPL_TMOUT_10ms;
2042 goto out;
2043 }
2044
2045 /* for version 2 capabilities we need to write the config space
2046 * directly in order to set the completion timeout value for
2047 * 16ms to 55ms
2048 */
2049 ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
2050 &pcie_devctl2);
2051 if (ret_val)
2052 goto out;
2053
2054 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms;
2055
2056 ret_val = igb_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
2057 &pcie_devctl2);
2058 out:
2059 /* disable completion timeout resend */
2060 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND;
2061
2062 wr32(E1000_GCR, gcr);
2063 return ret_val;
2064 }
2065
2066 /**
2067 * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing
2068 * @hw: pointer to the hardware struct
2069 * @enable: state to enter, either enabled or disabled
2070 * @pf: Physical Function pool - do not set anti-spoofing for the PF
2071 *
2072 * enables/disables L2 switch anti-spoofing functionality.
2073 **/
igb_vmdq_set_anti_spoofing_pf(struct e1000_hw * hw,bool enable,int pf)2074 void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
2075 {
2076 u32 reg_val, reg_offset;
2077
2078 switch (hw->mac.type) {
2079 case e1000_82576:
2080 reg_offset = E1000_DTXSWC;
2081 break;
2082 case e1000_i350:
2083 case e1000_i354:
2084 reg_offset = E1000_TXSWC;
2085 break;
2086 default:
2087 return;
2088 }
2089
2090 reg_val = rd32(reg_offset);
2091 if (enable) {
2092 reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK |
2093 E1000_DTXSWC_VLAN_SPOOF_MASK);
2094 /* The PF can spoof - it has to in order to
2095 * support emulation mode NICs
2096 */
2097 reg_val ^= (BIT(pf) | BIT(pf + MAX_NUM_VFS));
2098 } else {
2099 reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
2100 E1000_DTXSWC_VLAN_SPOOF_MASK);
2101 }
2102 wr32(reg_offset, reg_val);
2103 }
2104
2105 /**
2106 * igb_vmdq_set_loopback_pf - enable or disable vmdq loopback
2107 * @hw: pointer to the hardware struct
2108 * @enable: state to enter, either enabled or disabled
2109 *
2110 * enables/disables L2 switch loopback functionality.
2111 **/
igb_vmdq_set_loopback_pf(struct e1000_hw * hw,bool enable)2112 void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
2113 {
2114 u32 dtxswc;
2115
2116 switch (hw->mac.type) {
2117 case e1000_82576:
2118 dtxswc = rd32(E1000_DTXSWC);
2119 if (enable)
2120 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2121 else
2122 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2123 wr32(E1000_DTXSWC, dtxswc);
2124 break;
2125 case e1000_i354:
2126 case e1000_i350:
2127 dtxswc = rd32(E1000_TXSWC);
2128 if (enable)
2129 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2130 else
2131 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2132 wr32(E1000_TXSWC, dtxswc);
2133 break;
2134 default:
2135 /* Currently no other hardware supports loopback */
2136 break;
2137 }
2138
2139 }
2140
2141 /**
2142 * igb_vmdq_set_replication_pf - enable or disable vmdq replication
2143 * @hw: pointer to the hardware struct
2144 * @enable: state to enter, either enabled or disabled
2145 *
2146 * enables/disables replication of packets across multiple pools.
2147 **/
igb_vmdq_set_replication_pf(struct e1000_hw * hw,bool enable)2148 void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable)
2149 {
2150 u32 vt_ctl = rd32(E1000_VT_CTL);
2151
2152 if (enable)
2153 vt_ctl |= E1000_VT_CTL_VM_REPL_EN;
2154 else
2155 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN;
2156
2157 wr32(E1000_VT_CTL, vt_ctl);
2158 }
2159
2160 /**
2161 * igb_read_phy_reg_82580 - Read 82580 MDI control register
2162 * @hw: pointer to the HW structure
2163 * @offset: register offset to be read
2164 * @data: pointer to the read data
2165 *
2166 * Reads the MDI control register in the PHY at offset and stores the
2167 * information read to data.
2168 **/
igb_read_phy_reg_82580(struct e1000_hw * hw,u32 offset,u16 * data)2169 s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data)
2170 {
2171 s32 ret_val;
2172
2173 ret_val = hw->phy.ops.acquire(hw);
2174 if (ret_val)
2175 goto out;
2176
2177 ret_val = igb_read_phy_reg_mdic(hw, offset, data);
2178
2179 hw->phy.ops.release(hw);
2180
2181 out:
2182 return ret_val;
2183 }
2184
2185 /**
2186 * igb_write_phy_reg_82580 - Write 82580 MDI control register
2187 * @hw: pointer to the HW structure
2188 * @offset: register offset to write to
2189 * @data: data to write to register at offset
2190 *
2191 * Writes data to MDI control register in the PHY at offset.
2192 **/
igb_write_phy_reg_82580(struct e1000_hw * hw,u32 offset,u16 data)2193 s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data)
2194 {
2195 s32 ret_val;
2196
2197
2198 ret_val = hw->phy.ops.acquire(hw);
2199 if (ret_val)
2200 goto out;
2201
2202 ret_val = igb_write_phy_reg_mdic(hw, offset, data);
2203
2204 hw->phy.ops.release(hw);
2205
2206 out:
2207 return ret_val;
2208 }
2209
2210 /**
2211 * igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits
2212 * @hw: pointer to the HW structure
2213 *
2214 * This resets the the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on
2215 * the values found in the EEPROM. This addresses an issue in which these
2216 * bits are not restored from EEPROM after reset.
2217 **/
igb_reset_mdicnfg_82580(struct e1000_hw * hw)2218 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw)
2219 {
2220 s32 ret_val = 0;
2221 u32 mdicnfg;
2222 u16 nvm_data = 0;
2223
2224 if (hw->mac.type != e1000_82580)
2225 goto out;
2226 if (!igb_sgmii_active_82575(hw))
2227 goto out;
2228
2229 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
2230 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
2231 &nvm_data);
2232 if (ret_val) {
2233 hw_dbg("NVM Read Error\n");
2234 goto out;
2235 }
2236
2237 mdicnfg = rd32(E1000_MDICNFG);
2238 if (nvm_data & NVM_WORD24_EXT_MDIO)
2239 mdicnfg |= E1000_MDICNFG_EXT_MDIO;
2240 if (nvm_data & NVM_WORD24_COM_MDIO)
2241 mdicnfg |= E1000_MDICNFG_COM_MDIO;
2242 wr32(E1000_MDICNFG, mdicnfg);
2243 out:
2244 return ret_val;
2245 }
2246
2247 /**
2248 * igb_reset_hw_82580 - Reset hardware
2249 * @hw: pointer to the HW structure
2250 *
2251 * This resets function or entire device (all ports, etc.)
2252 * to a known state.
2253 **/
igb_reset_hw_82580(struct e1000_hw * hw)2254 static s32 igb_reset_hw_82580(struct e1000_hw *hw)
2255 {
2256 s32 ret_val = 0;
2257 /* BH SW mailbox bit in SW_FW_SYNC */
2258 u16 swmbsw_mask = E1000_SW_SYNCH_MB;
2259 u32 ctrl;
2260 bool global_device_reset = hw->dev_spec._82575.global_device_reset;
2261
2262 hw->dev_spec._82575.global_device_reset = false;
2263
2264 /* due to hw errata, global device reset doesn't always
2265 * work on 82580
2266 */
2267 if (hw->mac.type == e1000_82580)
2268 global_device_reset = false;
2269
2270 /* Get current control state. */
2271 ctrl = rd32(E1000_CTRL);
2272
2273 /* Prevent the PCI-E bus from sticking if there is no TLP connection
2274 * on the last TLP read/write transaction when MAC is reset.
2275 */
2276 ret_val = igb_disable_pcie_master(hw);
2277 if (ret_val)
2278 hw_dbg("PCI-E Master disable polling has failed.\n");
2279
2280 hw_dbg("Masking off all interrupts\n");
2281 wr32(E1000_IMC, 0xffffffff);
2282 wr32(E1000_RCTL, 0);
2283 wr32(E1000_TCTL, E1000_TCTL_PSP);
2284 wrfl();
2285
2286 usleep_range(10000, 11000);
2287
2288 /* Determine whether or not a global dev reset is requested */
2289 if (global_device_reset &&
2290 hw->mac.ops.acquire_swfw_sync(hw, swmbsw_mask))
2291 global_device_reset = false;
2292
2293 if (global_device_reset &&
2294 !(rd32(E1000_STATUS) & E1000_STAT_DEV_RST_SET))
2295 ctrl |= E1000_CTRL_DEV_RST;
2296 else
2297 ctrl |= E1000_CTRL_RST;
2298
2299 wr32(E1000_CTRL, ctrl);
2300 wrfl();
2301
2302 /* Add delay to insure DEV_RST has time to complete */
2303 if (global_device_reset)
2304 usleep_range(5000, 6000);
2305
2306 ret_val = igb_get_auto_rd_done(hw);
2307 if (ret_val) {
2308 /* When auto config read does not complete, do not
2309 * return with an error. This can happen in situations
2310 * where there is no eeprom and prevents getting link.
2311 */
2312 hw_dbg("Auto Read Done did not complete\n");
2313 }
2314
2315 /* clear global device reset status bit */
2316 wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET);
2317
2318 /* Clear any pending interrupt events. */
2319 wr32(E1000_IMC, 0xffffffff);
2320 rd32(E1000_ICR);
2321
2322 ret_val = igb_reset_mdicnfg_82580(hw);
2323 if (ret_val)
2324 hw_dbg("Could not reset MDICNFG based on EEPROM\n");
2325
2326 /* Install any alternate MAC address into RAR0 */
2327 ret_val = igb_check_alt_mac_addr(hw);
2328
2329 /* Release semaphore */
2330 if (global_device_reset)
2331 hw->mac.ops.release_swfw_sync(hw, swmbsw_mask);
2332
2333 return ret_val;
2334 }
2335
2336 /**
2337 * igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size
2338 * @data: data received by reading RXPBS register
2339 *
2340 * The 82580 uses a table based approach for packet buffer allocation sizes.
2341 * This function converts the retrieved value into the correct table value
2342 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7
2343 * 0x0 36 72 144 1 2 4 8 16
2344 * 0x8 35 70 140 rsv rsv rsv rsv rsv
2345 */
igb_rxpbs_adjust_82580(u32 data)2346 u16 igb_rxpbs_adjust_82580(u32 data)
2347 {
2348 u16 ret_val = 0;
2349
2350 if (data < ARRAY_SIZE(e1000_82580_rxpbs_table))
2351 ret_val = e1000_82580_rxpbs_table[data];
2352
2353 return ret_val;
2354 }
2355
2356 /**
2357 * igb_validate_nvm_checksum_with_offset - Validate EEPROM
2358 * checksum
2359 * @hw: pointer to the HW structure
2360 * @offset: offset in words of the checksum protected region
2361 *
2362 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM
2363 * and then verifies that the sum of the EEPROM is equal to 0xBABA.
2364 **/
igb_validate_nvm_checksum_with_offset(struct e1000_hw * hw,u16 offset)2365 static s32 igb_validate_nvm_checksum_with_offset(struct e1000_hw *hw,
2366 u16 offset)
2367 {
2368 s32 ret_val = 0;
2369 u16 checksum = 0;
2370 u16 i, nvm_data;
2371
2372 for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) {
2373 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);
2374 if (ret_val) {
2375 hw_dbg("NVM Read Error\n");
2376 goto out;
2377 }
2378 checksum += nvm_data;
2379 }
2380
2381 if (checksum != (u16) NVM_SUM) {
2382 hw_dbg("NVM Checksum Invalid\n");
2383 ret_val = -E1000_ERR_NVM;
2384 goto out;
2385 }
2386
2387 out:
2388 return ret_val;
2389 }
2390
2391 /**
2392 * igb_update_nvm_checksum_with_offset - Update EEPROM
2393 * checksum
2394 * @hw: pointer to the HW structure
2395 * @offset: offset in words of the checksum protected region
2396 *
2397 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
2398 * up to the checksum. Then calculates the EEPROM checksum and writes the
2399 * value to the EEPROM.
2400 **/
igb_update_nvm_checksum_with_offset(struct e1000_hw * hw,u16 offset)2401 static s32 igb_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset)
2402 {
2403 s32 ret_val;
2404 u16 checksum = 0;
2405 u16 i, nvm_data;
2406
2407 for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) {
2408 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);
2409 if (ret_val) {
2410 hw_dbg("NVM Read Error while updating checksum.\n");
2411 goto out;
2412 }
2413 checksum += nvm_data;
2414 }
2415 checksum = (u16) NVM_SUM - checksum;
2416 ret_val = hw->nvm.ops.write(hw, (NVM_CHECKSUM_REG + offset), 1,
2417 &checksum);
2418 if (ret_val)
2419 hw_dbg("NVM Write Error while updating checksum.\n");
2420
2421 out:
2422 return ret_val;
2423 }
2424
2425 /**
2426 * igb_validate_nvm_checksum_82580 - Validate EEPROM checksum
2427 * @hw: pointer to the HW structure
2428 *
2429 * Calculates the EEPROM section checksum by reading/adding each word of
2430 * the EEPROM and then verifies that the sum of the EEPROM is
2431 * equal to 0xBABA.
2432 **/
igb_validate_nvm_checksum_82580(struct e1000_hw * hw)2433 static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw)
2434 {
2435 s32 ret_val = 0;
2436 u16 eeprom_regions_count = 1;
2437 u16 j, nvm_data;
2438 u16 nvm_offset;
2439
2440 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data);
2441 if (ret_val) {
2442 hw_dbg("NVM Read Error\n");
2443 goto out;
2444 }
2445
2446 if (nvm_data & NVM_COMPATIBILITY_BIT_MASK) {
2447 /* if checksums compatibility bit is set validate checksums
2448 * for all 4 ports.
2449 */
2450 eeprom_regions_count = 4;
2451 }
2452
2453 for (j = 0; j < eeprom_regions_count; j++) {
2454 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2455 ret_val = igb_validate_nvm_checksum_with_offset(hw,
2456 nvm_offset);
2457 if (ret_val != 0)
2458 goto out;
2459 }
2460
2461 out:
2462 return ret_val;
2463 }
2464
2465 /**
2466 * igb_update_nvm_checksum_82580 - Update EEPROM checksum
2467 * @hw: pointer to the HW structure
2468 *
2469 * Updates the EEPROM section checksums for all 4 ports by reading/adding
2470 * each word of the EEPROM up to the checksum. Then calculates the EEPROM
2471 * checksum and writes the value to the EEPROM.
2472 **/
igb_update_nvm_checksum_82580(struct e1000_hw * hw)2473 static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw)
2474 {
2475 s32 ret_val;
2476 u16 j, nvm_data;
2477 u16 nvm_offset;
2478
2479 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data);
2480 if (ret_val) {
2481 hw_dbg("NVM Read Error while updating checksum compatibility bit.\n");
2482 goto out;
2483 }
2484
2485 if ((nvm_data & NVM_COMPATIBILITY_BIT_MASK) == 0) {
2486 /* set compatibility bit to validate checksums appropriately */
2487 nvm_data = nvm_data | NVM_COMPATIBILITY_BIT_MASK;
2488 ret_val = hw->nvm.ops.write(hw, NVM_COMPATIBILITY_REG_3, 1,
2489 &nvm_data);
2490 if (ret_val) {
2491 hw_dbg("NVM Write Error while updating checksum compatibility bit.\n");
2492 goto out;
2493 }
2494 }
2495
2496 for (j = 0; j < 4; j++) {
2497 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2498 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset);
2499 if (ret_val)
2500 goto out;
2501 }
2502
2503 out:
2504 return ret_val;
2505 }
2506
2507 /**
2508 * igb_validate_nvm_checksum_i350 - Validate EEPROM checksum
2509 * @hw: pointer to the HW structure
2510 *
2511 * Calculates the EEPROM section checksum by reading/adding each word of
2512 * the EEPROM and then verifies that the sum of the EEPROM is
2513 * equal to 0xBABA.
2514 **/
igb_validate_nvm_checksum_i350(struct e1000_hw * hw)2515 static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw)
2516 {
2517 s32 ret_val = 0;
2518 u16 j;
2519 u16 nvm_offset;
2520
2521 for (j = 0; j < 4; j++) {
2522 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2523 ret_val = igb_validate_nvm_checksum_with_offset(hw,
2524 nvm_offset);
2525 if (ret_val != 0)
2526 goto out;
2527 }
2528
2529 out:
2530 return ret_val;
2531 }
2532
2533 /**
2534 * igb_update_nvm_checksum_i350 - Update EEPROM checksum
2535 * @hw: pointer to the HW structure
2536 *
2537 * Updates the EEPROM section checksums for all 4 ports by reading/adding
2538 * each word of the EEPROM up to the checksum. Then calculates the EEPROM
2539 * checksum and writes the value to the EEPROM.
2540 **/
igb_update_nvm_checksum_i350(struct e1000_hw * hw)2541 static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw)
2542 {
2543 s32 ret_val = 0;
2544 u16 j;
2545 u16 nvm_offset;
2546
2547 for (j = 0; j < 4; j++) {
2548 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2549 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset);
2550 if (ret_val != 0)
2551 goto out;
2552 }
2553
2554 out:
2555 return ret_val;
2556 }
2557
2558 /**
2559 * __igb_access_emi_reg - Read/write EMI register
2560 * @hw: pointer to the HW structure
2561 * @addr: EMI address to program
2562 * @data: pointer to value to read/write from/to the EMI address
2563 * @read: boolean flag to indicate read or write
2564 **/
__igb_access_emi_reg(struct e1000_hw * hw,u16 address,u16 * data,bool read)2565 static s32 __igb_access_emi_reg(struct e1000_hw *hw, u16 address,
2566 u16 *data, bool read)
2567 {
2568 s32 ret_val = 0;
2569
2570 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIADD, address);
2571 if (ret_val)
2572 return ret_val;
2573
2574 if (read)
2575 ret_val = hw->phy.ops.read_reg(hw, E1000_EMIDATA, data);
2576 else
2577 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIDATA, *data);
2578
2579 return ret_val;
2580 }
2581
2582 /**
2583 * igb_read_emi_reg - Read Extended Management Interface register
2584 * @hw: pointer to the HW structure
2585 * @addr: EMI address to program
2586 * @data: value to be read from the EMI address
2587 **/
igb_read_emi_reg(struct e1000_hw * hw,u16 addr,u16 * data)2588 s32 igb_read_emi_reg(struct e1000_hw *hw, u16 addr, u16 *data)
2589 {
2590 return __igb_access_emi_reg(hw, addr, data, true);
2591 }
2592
2593 /**
2594 * igb_set_eee_i350 - Enable/disable EEE support
2595 * @hw: pointer to the HW structure
2596 * @adv1G: boolean flag enabling 1G EEE advertisement
2597 * @adv100m: boolean flag enabling 100M EEE advertisement
2598 *
2599 * Enable/disable EEE based on setting in dev_spec structure.
2600 *
2601 **/
igb_set_eee_i350(struct e1000_hw * hw,bool adv1G,bool adv100M)2602 s32 igb_set_eee_i350(struct e1000_hw *hw, bool adv1G, bool adv100M)
2603 {
2604 u32 ipcnfg, eeer;
2605
2606 if ((hw->mac.type < e1000_i350) ||
2607 (hw->phy.media_type != e1000_media_type_copper))
2608 goto out;
2609 ipcnfg = rd32(E1000_IPCNFG);
2610 eeer = rd32(E1000_EEER);
2611
2612 /* enable or disable per user setting */
2613 if (!(hw->dev_spec._82575.eee_disable)) {
2614 u32 eee_su = rd32(E1000_EEE_SU);
2615
2616 if (adv100M)
2617 ipcnfg |= E1000_IPCNFG_EEE_100M_AN;
2618 else
2619 ipcnfg &= ~E1000_IPCNFG_EEE_100M_AN;
2620
2621 if (adv1G)
2622 ipcnfg |= E1000_IPCNFG_EEE_1G_AN;
2623 else
2624 ipcnfg &= ~E1000_IPCNFG_EEE_1G_AN;
2625
2626 eeer |= (E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN |
2627 E1000_EEER_LPI_FC);
2628
2629 /* This bit should not be set in normal operation. */
2630 if (eee_su & E1000_EEE_SU_LPI_CLK_STP)
2631 hw_dbg("LPI Clock Stop Bit should not be set!\n");
2632
2633 } else {
2634 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN |
2635 E1000_IPCNFG_EEE_100M_AN);
2636 eeer &= ~(E1000_EEER_TX_LPI_EN |
2637 E1000_EEER_RX_LPI_EN |
2638 E1000_EEER_LPI_FC);
2639 }
2640 wr32(E1000_IPCNFG, ipcnfg);
2641 wr32(E1000_EEER, eeer);
2642 rd32(E1000_IPCNFG);
2643 rd32(E1000_EEER);
2644 out:
2645
2646 return 0;
2647 }
2648
2649 /**
2650 * igb_set_eee_i354 - Enable/disable EEE support
2651 * @hw: pointer to the HW structure
2652 * @adv1G: boolean flag enabling 1G EEE advertisement
2653 * @adv100m: boolean flag enabling 100M EEE advertisement
2654 *
2655 * Enable/disable EEE legacy mode based on setting in dev_spec structure.
2656 *
2657 **/
igb_set_eee_i354(struct e1000_hw * hw,bool adv1G,bool adv100M)2658 s32 igb_set_eee_i354(struct e1000_hw *hw, bool adv1G, bool adv100M)
2659 {
2660 struct e1000_phy_info *phy = &hw->phy;
2661 s32 ret_val = 0;
2662 u16 phy_data;
2663
2664 if ((hw->phy.media_type != e1000_media_type_copper) ||
2665 ((phy->id != M88E1543_E_PHY_ID) &&
2666 (phy->id != M88E1512_E_PHY_ID)))
2667 goto out;
2668
2669 if (!hw->dev_spec._82575.eee_disable) {
2670 /* Switch to PHY page 18. */
2671 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 18);
2672 if (ret_val)
2673 goto out;
2674
2675 ret_val = phy->ops.read_reg(hw, E1000_M88E1543_EEE_CTRL_1,
2676 &phy_data);
2677 if (ret_val)
2678 goto out;
2679
2680 phy_data |= E1000_M88E1543_EEE_CTRL_1_MS;
2681 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_EEE_CTRL_1,
2682 phy_data);
2683 if (ret_val)
2684 goto out;
2685
2686 /* Return the PHY to page 0. */
2687 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0);
2688 if (ret_val)
2689 goto out;
2690
2691 /* Turn on EEE advertisement. */
2692 ret_val = igb_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2693 E1000_EEE_ADV_DEV_I354,
2694 &phy_data);
2695 if (ret_val)
2696 goto out;
2697
2698 if (adv100M)
2699 phy_data |= E1000_EEE_ADV_100_SUPPORTED;
2700 else
2701 phy_data &= ~E1000_EEE_ADV_100_SUPPORTED;
2702
2703 if (adv1G)
2704 phy_data |= E1000_EEE_ADV_1000_SUPPORTED;
2705 else
2706 phy_data &= ~E1000_EEE_ADV_1000_SUPPORTED;
2707
2708 ret_val = igb_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2709 E1000_EEE_ADV_DEV_I354,
2710 phy_data);
2711 } else {
2712 /* Turn off EEE advertisement. */
2713 ret_val = igb_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2714 E1000_EEE_ADV_DEV_I354,
2715 &phy_data);
2716 if (ret_val)
2717 goto out;
2718
2719 phy_data &= ~(E1000_EEE_ADV_100_SUPPORTED |
2720 E1000_EEE_ADV_1000_SUPPORTED);
2721 ret_val = igb_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2722 E1000_EEE_ADV_DEV_I354,
2723 phy_data);
2724 }
2725
2726 out:
2727 return ret_val;
2728 }
2729
2730 /**
2731 * igb_get_eee_status_i354 - Get EEE status
2732 * @hw: pointer to the HW structure
2733 * @status: EEE status
2734 *
2735 * Get EEE status by guessing based on whether Tx or Rx LPI indications have
2736 * been received.
2737 **/
igb_get_eee_status_i354(struct e1000_hw * hw,bool * status)2738 s32 igb_get_eee_status_i354(struct e1000_hw *hw, bool *status)
2739 {
2740 struct e1000_phy_info *phy = &hw->phy;
2741 s32 ret_val = 0;
2742 u16 phy_data;
2743
2744 /* Check if EEE is supported on this device. */
2745 if ((hw->phy.media_type != e1000_media_type_copper) ||
2746 ((phy->id != M88E1543_E_PHY_ID) &&
2747 (phy->id != M88E1512_E_PHY_ID)))
2748 goto out;
2749
2750 ret_val = igb_read_xmdio_reg(hw, E1000_PCS_STATUS_ADDR_I354,
2751 E1000_PCS_STATUS_DEV_I354,
2752 &phy_data);
2753 if (ret_val)
2754 goto out;
2755
2756 *status = phy_data & (E1000_PCS_STATUS_TX_LPI_RCVD |
2757 E1000_PCS_STATUS_RX_LPI_RCVD) ? true : false;
2758
2759 out:
2760 return ret_val;
2761 }
2762
2763 static const u8 e1000_emc_temp_data[4] = {
2764 E1000_EMC_INTERNAL_DATA,
2765 E1000_EMC_DIODE1_DATA,
2766 E1000_EMC_DIODE2_DATA,
2767 E1000_EMC_DIODE3_DATA
2768 };
2769 static const u8 e1000_emc_therm_limit[4] = {
2770 E1000_EMC_INTERNAL_THERM_LIMIT,
2771 E1000_EMC_DIODE1_THERM_LIMIT,
2772 E1000_EMC_DIODE2_THERM_LIMIT,
2773 E1000_EMC_DIODE3_THERM_LIMIT
2774 };
2775
2776 #ifdef CONFIG_IGB_HWMON
2777 /**
2778 * igb_get_thermal_sensor_data_generic - Gathers thermal sensor data
2779 * @hw: pointer to hardware structure
2780 *
2781 * Updates the temperatures in mac.thermal_sensor_data
2782 **/
igb_get_thermal_sensor_data_generic(struct e1000_hw * hw)2783 static s32 igb_get_thermal_sensor_data_generic(struct e1000_hw *hw)
2784 {
2785 u16 ets_offset;
2786 u16 ets_cfg;
2787 u16 ets_sensor;
2788 u8 num_sensors;
2789 u8 sensor_index;
2790 u8 sensor_location;
2791 u8 i;
2792 struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
2793
2794 if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0))
2795 return E1000_NOT_IMPLEMENTED;
2796
2797 data->sensor[0].temp = (rd32(E1000_THMJT) & 0xFF);
2798
2799 /* Return the internal sensor only if ETS is unsupported */
2800 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset);
2801 if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF))
2802 return 0;
2803
2804 hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg);
2805 if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT)
2806 != NVM_ETS_TYPE_EMC)
2807 return E1000_NOT_IMPLEMENTED;
2808
2809 num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK);
2810 if (num_sensors > E1000_MAX_SENSORS)
2811 num_sensors = E1000_MAX_SENSORS;
2812
2813 for (i = 1; i < num_sensors; i++) {
2814 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor);
2815 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >>
2816 NVM_ETS_DATA_INDEX_SHIFT);
2817 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >>
2818 NVM_ETS_DATA_LOC_SHIFT);
2819
2820 if (sensor_location != 0)
2821 hw->phy.ops.read_i2c_byte(hw,
2822 e1000_emc_temp_data[sensor_index],
2823 E1000_I2C_THERMAL_SENSOR_ADDR,
2824 &data->sensor[i].temp);
2825 }
2826 return 0;
2827 }
2828
2829 /**
2830 * igb_init_thermal_sensor_thresh_generic - Sets thermal sensor thresholds
2831 * @hw: pointer to hardware structure
2832 *
2833 * Sets the thermal sensor thresholds according to the NVM map
2834 * and save off the threshold and location values into mac.thermal_sensor_data
2835 **/
igb_init_thermal_sensor_thresh_generic(struct e1000_hw * hw)2836 static s32 igb_init_thermal_sensor_thresh_generic(struct e1000_hw *hw)
2837 {
2838 u16 ets_offset;
2839 u16 ets_cfg;
2840 u16 ets_sensor;
2841 u8 low_thresh_delta;
2842 u8 num_sensors;
2843 u8 sensor_index;
2844 u8 sensor_location;
2845 u8 therm_limit;
2846 u8 i;
2847 struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
2848
2849 if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0))
2850 return E1000_NOT_IMPLEMENTED;
2851
2852 memset(data, 0, sizeof(struct e1000_thermal_sensor_data));
2853
2854 data->sensor[0].location = 0x1;
2855 data->sensor[0].caution_thresh =
2856 (rd32(E1000_THHIGHTC) & 0xFF);
2857 data->sensor[0].max_op_thresh =
2858 (rd32(E1000_THLOWTC) & 0xFF);
2859
2860 /* Return the internal sensor only if ETS is unsupported */
2861 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset);
2862 if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF))
2863 return 0;
2864
2865 hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg);
2866 if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT)
2867 != NVM_ETS_TYPE_EMC)
2868 return E1000_NOT_IMPLEMENTED;
2869
2870 low_thresh_delta = ((ets_cfg & NVM_ETS_LTHRES_DELTA_MASK) >>
2871 NVM_ETS_LTHRES_DELTA_SHIFT);
2872 num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK);
2873
2874 for (i = 1; i <= num_sensors; i++) {
2875 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor);
2876 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >>
2877 NVM_ETS_DATA_INDEX_SHIFT);
2878 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >>
2879 NVM_ETS_DATA_LOC_SHIFT);
2880 therm_limit = ets_sensor & NVM_ETS_DATA_HTHRESH_MASK;
2881
2882 hw->phy.ops.write_i2c_byte(hw,
2883 e1000_emc_therm_limit[sensor_index],
2884 E1000_I2C_THERMAL_SENSOR_ADDR,
2885 therm_limit);
2886
2887 if ((i < E1000_MAX_SENSORS) && (sensor_location != 0)) {
2888 data->sensor[i].location = sensor_location;
2889 data->sensor[i].caution_thresh = therm_limit;
2890 data->sensor[i].max_op_thresh = therm_limit -
2891 low_thresh_delta;
2892 }
2893 }
2894 return 0;
2895 }
2896
2897 #endif
2898 static struct e1000_mac_operations e1000_mac_ops_82575 = {
2899 .init_hw = igb_init_hw_82575,
2900 .check_for_link = igb_check_for_link_82575,
2901 .rar_set = igb_rar_set,
2902 .read_mac_addr = igb_read_mac_addr_82575,
2903 .get_speed_and_duplex = igb_get_link_up_info_82575,
2904 #ifdef CONFIG_IGB_HWMON
2905 .get_thermal_sensor_data = igb_get_thermal_sensor_data_generic,
2906 .init_thermal_sensor_thresh = igb_init_thermal_sensor_thresh_generic,
2907 #endif
2908 };
2909
2910 static const struct e1000_phy_operations e1000_phy_ops_82575 = {
2911 .acquire = igb_acquire_phy_82575,
2912 .get_cfg_done = igb_get_cfg_done_82575,
2913 .release = igb_release_phy_82575,
2914 .write_i2c_byte = igb_write_i2c_byte,
2915 .read_i2c_byte = igb_read_i2c_byte,
2916 };
2917
2918 static struct e1000_nvm_operations e1000_nvm_ops_82575 = {
2919 .acquire = igb_acquire_nvm_82575,
2920 .read = igb_read_nvm_eerd,
2921 .release = igb_release_nvm_82575,
2922 .write = igb_write_nvm_spi,
2923 };
2924
2925 const struct e1000_info e1000_82575_info = {
2926 .get_invariants = igb_get_invariants_82575,
2927 .mac_ops = &e1000_mac_ops_82575,
2928 .phy_ops = &e1000_phy_ops_82575,
2929 .nvm_ops = &e1000_nvm_ops_82575,
2930 };
2931
2932
