Merge branch 'topic/usb-caiaq' into for-linus
[linux-2.6] / drivers / net / e1000e / 82571.c
1 /*******************************************************************************
2
3   Intel PRO/1000 Linux driver
4   Copyright(c) 1999 - 2008 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 /*
30  * 82571EB Gigabit Ethernet Controller
31  * 82571EB Gigabit Ethernet Controller (Copper)
32  * 82571EB Gigabit Ethernet Controller (Fiber)
33  * 82571EB Dual Port Gigabit Mezzanine Adapter
34  * 82571EB Quad Port Gigabit Mezzanine Adapter
35  * 82571PT Gigabit PT Quad Port Server ExpressModule
36  * 82572EI Gigabit Ethernet Controller (Copper)
37  * 82572EI Gigabit Ethernet Controller (Fiber)
38  * 82572EI Gigabit Ethernet Controller
39  * 82573V Gigabit Ethernet Controller (Copper)
40  * 82573E Gigabit Ethernet Controller (Copper)
41  * 82573L Gigabit Ethernet Controller
42  * 82574L Gigabit Network Connection
43  */
44
45 #include <linux/netdevice.h>
46 #include <linux/delay.h>
47 #include <linux/pci.h>
48
49 #include "e1000.h"
50
51 #define ID_LED_RESERVED_F746 0xF746
52 #define ID_LED_DEFAULT_82573 ((ID_LED_DEF1_DEF2 << 12) | \
53                               (ID_LED_OFF1_ON2  <<  8) | \
54                               (ID_LED_DEF1_DEF2 <<  4) | \
55                               (ID_LED_DEF1_DEF2))
56
57 #define E1000_GCR_L1_ACT_WITHOUT_L0S_RX 0x08000000
58
59 #define E1000_NVM_INIT_CTRL2_MNGM 0x6000 /* Manageability Operation Mode mask */
60
61 static s32 e1000_get_phy_id_82571(struct e1000_hw *hw);
62 static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw);
63 static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw);
64 static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
65                                       u16 words, u16 *data);
66 static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw);
67 static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw);
68 static s32 e1000_setup_link_82571(struct e1000_hw *hw);
69 static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw);
70 static bool e1000_check_mng_mode_82574(struct e1000_hw *hw);
71 static s32 e1000_led_on_82574(struct e1000_hw *hw);
72
73 /**
74  *  e1000_init_phy_params_82571 - Init PHY func ptrs.
75  *  @hw: pointer to the HW structure
76  *
77  *  This is a function pointer entry point called by the api module.
78  **/
79 static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
80 {
81         struct e1000_phy_info *phy = &hw->phy;
82         s32 ret_val;
83
84         if (hw->phy.media_type != e1000_media_type_copper) {
85                 phy->type = e1000_phy_none;
86                 return 0;
87         }
88
89         phy->addr                        = 1;
90         phy->autoneg_mask                = AUTONEG_ADVERTISE_SPEED_DEFAULT;
91         phy->reset_delay_us              = 100;
92
93         switch (hw->mac.type) {
94         case e1000_82571:
95         case e1000_82572:
96                 phy->type                = e1000_phy_igp_2;
97                 break;
98         case e1000_82573:
99                 phy->type                = e1000_phy_m88;
100                 break;
101         case e1000_82574:
102                 phy->type                = e1000_phy_bm;
103                 break;
104         default:
105                 return -E1000_ERR_PHY;
106                 break;
107         }
108
109         /* This can only be done after all function pointers are setup. */
110         ret_val = e1000_get_phy_id_82571(hw);
111
112         /* Verify phy id */
113         switch (hw->mac.type) {
114         case e1000_82571:
115         case e1000_82572:
116                 if (phy->id != IGP01E1000_I_PHY_ID)
117                         return -E1000_ERR_PHY;
118                 break;
119         case e1000_82573:
120                 if (phy->id != M88E1111_I_PHY_ID)
121                         return -E1000_ERR_PHY;
122                 break;
123         case e1000_82574:
124                 if (phy->id != BME1000_E_PHY_ID_R2)
125                         return -E1000_ERR_PHY;
126                 break;
127         default:
128                 return -E1000_ERR_PHY;
129                 break;
130         }
131
132         return 0;
133 }
134
135 /**
136  *  e1000_init_nvm_params_82571 - Init NVM func ptrs.
137  *  @hw: pointer to the HW structure
138  *
139  *  This is a function pointer entry point called by the api module.
140  **/
141 static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)
142 {
143         struct e1000_nvm_info *nvm = &hw->nvm;
144         u32 eecd = er32(EECD);
145         u16 size;
146
147         nvm->opcode_bits = 8;
148         nvm->delay_usec = 1;
149         switch (nvm->override) {
150         case e1000_nvm_override_spi_large:
151                 nvm->page_size = 32;
152                 nvm->address_bits = 16;
153                 break;
154         case e1000_nvm_override_spi_small:
155                 nvm->page_size = 8;
156                 nvm->address_bits = 8;
157                 break;
158         default:
159                 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
160                 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
161                 break;
162         }
163
164         switch (hw->mac.type) {
165         case e1000_82573:
166         case e1000_82574:
167                 if (((eecd >> 15) & 0x3) == 0x3) {
168                         nvm->type = e1000_nvm_flash_hw;
169                         nvm->word_size = 2048;
170                         /*
171                          * Autonomous Flash update bit must be cleared due
172                          * to Flash update issue.
173                          */
174                         eecd &= ~E1000_EECD_AUPDEN;
175                         ew32(EECD, eecd);
176                         break;
177                 }
178                 /* Fall Through */
179         default:
180                 nvm->type = e1000_nvm_eeprom_spi;
181                 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
182                                   E1000_EECD_SIZE_EX_SHIFT);
183                 /*
184                  * Added to a constant, "size" becomes the left-shift value
185                  * for setting word_size.
186                  */
187                 size += NVM_WORD_SIZE_BASE_SHIFT;
188
189                 /* EEPROM access above 16k is unsupported */
190                 if (size > 14)
191                         size = 14;
192                 nvm->word_size  = 1 << size;
193                 break;
194         }
195
196         return 0;
197 }
198
199 /**
200  *  e1000_init_mac_params_82571 - Init MAC func ptrs.
201  *  @hw: pointer to the HW structure
202  *
203  *  This is a function pointer entry point called by the api module.
204  **/
205 static s32 e1000_init_mac_params_82571(struct e1000_adapter *adapter)
206 {
207         struct e1000_hw *hw = &adapter->hw;
208         struct e1000_mac_info *mac = &hw->mac;
209         struct e1000_mac_operations *func = &mac->ops;
210
211         /* Set media type */
212         switch (adapter->pdev->device) {
213         case E1000_DEV_ID_82571EB_FIBER:
214         case E1000_DEV_ID_82572EI_FIBER:
215         case E1000_DEV_ID_82571EB_QUAD_FIBER:
216                 hw->phy.media_type = e1000_media_type_fiber;
217                 break;
218         case E1000_DEV_ID_82571EB_SERDES:
219         case E1000_DEV_ID_82572EI_SERDES:
220         case E1000_DEV_ID_82571EB_SERDES_DUAL:
221         case E1000_DEV_ID_82571EB_SERDES_QUAD:
222                 hw->phy.media_type = e1000_media_type_internal_serdes;
223                 break;
224         default:
225                 hw->phy.media_type = e1000_media_type_copper;
226                 break;
227         }
228
229         /* Set mta register count */
230         mac->mta_reg_count = 128;
231         /* Set rar entry count */
232         mac->rar_entry_count = E1000_RAR_ENTRIES;
233         /* Set if manageability features are enabled. */
234         mac->arc_subsystem_valid = (er32(FWSM) & E1000_FWSM_MODE_MASK) ? 1 : 0;
235
236         /* check for link */
237         switch (hw->phy.media_type) {
238         case e1000_media_type_copper:
239                 func->setup_physical_interface = e1000_setup_copper_link_82571;
240                 func->check_for_link = e1000e_check_for_copper_link;
241                 func->get_link_up_info = e1000e_get_speed_and_duplex_copper;
242                 break;
243         case e1000_media_type_fiber:
244                 func->setup_physical_interface =
245                         e1000_setup_fiber_serdes_link_82571;
246                 func->check_for_link = e1000e_check_for_fiber_link;
247                 func->get_link_up_info =
248                         e1000e_get_speed_and_duplex_fiber_serdes;
249                 break;
250         case e1000_media_type_internal_serdes:
251                 func->setup_physical_interface =
252                         e1000_setup_fiber_serdes_link_82571;
253                 func->check_for_link = e1000e_check_for_serdes_link;
254                 func->get_link_up_info =
255                         e1000e_get_speed_and_duplex_fiber_serdes;
256                 break;
257         default:
258                 return -E1000_ERR_CONFIG;
259                 break;
260         }
261
262         switch (hw->mac.type) {
263         case e1000_82574:
264                 func->check_mng_mode = e1000_check_mng_mode_82574;
265                 func->led_on = e1000_led_on_82574;
266                 break;
267         default:
268                 func->check_mng_mode = e1000e_check_mng_mode_generic;
269                 func->led_on = e1000e_led_on_generic;
270                 break;
271         }
272
273         return 0;
274 }
275
276 static s32 e1000_get_variants_82571(struct e1000_adapter *adapter)
277 {
278         struct e1000_hw *hw = &adapter->hw;
279         static int global_quad_port_a; /* global port a indication */
280         struct pci_dev *pdev = adapter->pdev;
281         u16 eeprom_data = 0;
282         int is_port_b = er32(STATUS) & E1000_STATUS_FUNC_1;
283         s32 rc;
284
285         rc = e1000_init_mac_params_82571(adapter);
286         if (rc)
287                 return rc;
288
289         rc = e1000_init_nvm_params_82571(hw);
290         if (rc)
291                 return rc;
292
293         rc = e1000_init_phy_params_82571(hw);
294         if (rc)
295                 return rc;
296
297         /* tag quad port adapters first, it's used below */
298         switch (pdev->device) {
299         case E1000_DEV_ID_82571EB_QUAD_COPPER:
300         case E1000_DEV_ID_82571EB_QUAD_FIBER:
301         case E1000_DEV_ID_82571EB_QUAD_COPPER_LP:
302         case E1000_DEV_ID_82571PT_QUAD_COPPER:
303                 adapter->flags |= FLAG_IS_QUAD_PORT;
304                 /* mark the first port */
305                 if (global_quad_port_a == 0)
306                         adapter->flags |= FLAG_IS_QUAD_PORT_A;
307                 /* Reset for multiple quad port adapters */
308                 global_quad_port_a++;
309                 if (global_quad_port_a == 4)
310                         global_quad_port_a = 0;
311                 break;
312         default:
313                 break;
314         }
315
316         switch (adapter->hw.mac.type) {
317         case e1000_82571:
318                 /* these dual ports don't have WoL on port B at all */
319                 if (((pdev->device == E1000_DEV_ID_82571EB_FIBER) ||
320                      (pdev->device == E1000_DEV_ID_82571EB_SERDES) ||
321                      (pdev->device == E1000_DEV_ID_82571EB_COPPER)) &&
322                     (is_port_b))
323                         adapter->flags &= ~FLAG_HAS_WOL;
324                 /* quad ports only support WoL on port A */
325                 if (adapter->flags & FLAG_IS_QUAD_PORT &&
326                     (!(adapter->flags & FLAG_IS_QUAD_PORT_A)))
327                         adapter->flags &= ~FLAG_HAS_WOL;
328                 /* Does not support WoL on any port */
329                 if (pdev->device == E1000_DEV_ID_82571EB_SERDES_QUAD)
330                         adapter->flags &= ~FLAG_HAS_WOL;
331                 break;
332
333         case e1000_82573:
334                 if (pdev->device == E1000_DEV_ID_82573L) {
335                         if (e1000_read_nvm(&adapter->hw, NVM_INIT_3GIO_3, 1,
336                                        &eeprom_data) < 0)
337                                 break;
338                         if (eeprom_data & NVM_WORD1A_ASPM_MASK)
339                                 adapter->flags &= ~FLAG_HAS_JUMBO_FRAMES;
340                 }
341                 break;
342         default:
343                 break;
344         }
345
346         return 0;
347 }
348
349 /**
350  *  e1000_get_phy_id_82571 - Retrieve the PHY ID and revision
351  *  @hw: pointer to the HW structure
352  *
353  *  Reads the PHY registers and stores the PHY ID and possibly the PHY
354  *  revision in the hardware structure.
355  **/
356 static s32 e1000_get_phy_id_82571(struct e1000_hw *hw)
357 {
358         struct e1000_phy_info *phy = &hw->phy;
359         s32 ret_val;
360         u16 phy_id = 0;
361
362         switch (hw->mac.type) {
363         case e1000_82571:
364         case e1000_82572:
365                 /*
366                  * The 82571 firmware may still be configuring the PHY.
367                  * In this case, we cannot access the PHY until the
368                  * configuration is done.  So we explicitly set the
369                  * PHY ID.
370                  */
371                 phy->id = IGP01E1000_I_PHY_ID;
372                 break;
373         case e1000_82573:
374                 return e1000e_get_phy_id(hw);
375                 break;
376         case e1000_82574:
377                 ret_val = e1e_rphy(hw, PHY_ID1, &phy_id);
378                 if (ret_val)
379                         return ret_val;
380
381                 phy->id = (u32)(phy_id << 16);
382                 udelay(20);
383                 ret_val = e1e_rphy(hw, PHY_ID2, &phy_id);
384                 if (ret_val)
385                         return ret_val;
386
387                 phy->id |= (u32)(phy_id);
388                 phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
389                 break;
390         default:
391                 return -E1000_ERR_PHY;
392                 break;
393         }
394
395         return 0;
396 }
397
398 /**
399  *  e1000_get_hw_semaphore_82571 - Acquire hardware semaphore
400  *  @hw: pointer to the HW structure
401  *
402  *  Acquire the HW semaphore to access the PHY or NVM
403  **/
404 static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw)
405 {
406         u32 swsm;
407         s32 timeout = hw->nvm.word_size + 1;
408         s32 i = 0;
409
410         /* Get the FW semaphore. */
411         for (i = 0; i < timeout; i++) {
412                 swsm = er32(SWSM);
413                 ew32(SWSM, swsm | E1000_SWSM_SWESMBI);
414
415                 /* Semaphore acquired if bit latched */
416                 if (er32(SWSM) & E1000_SWSM_SWESMBI)
417                         break;
418
419                 udelay(50);
420         }
421
422         if (i == timeout) {
423                 /* Release semaphores */
424                 e1000e_put_hw_semaphore(hw);
425                 hw_dbg(hw, "Driver can't access the NVM\n");
426                 return -E1000_ERR_NVM;
427         }
428
429         return 0;
430 }
431
432 /**
433  *  e1000_put_hw_semaphore_82571 - Release hardware semaphore
434  *  @hw: pointer to the HW structure
435  *
436  *  Release hardware semaphore used to access the PHY or NVM
437  **/
438 static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)
439 {
440         u32 swsm;
441
442         swsm = er32(SWSM);
443
444         swsm &= ~E1000_SWSM_SWESMBI;
445
446         ew32(SWSM, swsm);
447 }
448
449 /**
450  *  e1000_acquire_nvm_82571 - Request for access to the EEPROM
451  *  @hw: pointer to the HW structure
452  *
453  *  To gain access to the EEPROM, first we must obtain a hardware semaphore.
454  *  Then for non-82573 hardware, set the EEPROM access request bit and wait
455  *  for EEPROM access grant bit.  If the access grant bit is not set, release
456  *  hardware semaphore.
457  **/
458 static s32 e1000_acquire_nvm_82571(struct e1000_hw *hw)
459 {
460         s32 ret_val;
461
462         ret_val = e1000_get_hw_semaphore_82571(hw);
463         if (ret_val)
464                 return ret_val;
465
466         if (hw->mac.type != e1000_82573 && hw->mac.type != e1000_82574)
467                 ret_val = e1000e_acquire_nvm(hw);
468
469         if (ret_val)
470                 e1000_put_hw_semaphore_82571(hw);
471
472         return ret_val;
473 }
474
475 /**
476  *  e1000_release_nvm_82571 - Release exclusive access to EEPROM
477  *  @hw: pointer to the HW structure
478  *
479  *  Stop any current commands to the EEPROM and clear the EEPROM request bit.
480  **/
481 static void e1000_release_nvm_82571(struct e1000_hw *hw)
482 {
483         e1000e_release_nvm(hw);
484         e1000_put_hw_semaphore_82571(hw);
485 }
486
487 /**
488  *  e1000_write_nvm_82571 - Write to EEPROM using appropriate interface
489  *  @hw: pointer to the HW structure
490  *  @offset: offset within the EEPROM to be written to
491  *  @words: number of words to write
492  *  @data: 16 bit word(s) to be written to the EEPROM
493  *
494  *  For non-82573 silicon, write data to EEPROM at offset using SPI interface.
495  *
496  *  If e1000e_update_nvm_checksum is not called after this function, the
497  *  EEPROM will most likely contain an invalid checksum.
498  **/
499 static s32 e1000_write_nvm_82571(struct e1000_hw *hw, u16 offset, u16 words,
500                                  u16 *data)
501 {
502         s32 ret_val;
503
504         switch (hw->mac.type) {
505         case e1000_82573:
506         case e1000_82574:
507                 ret_val = e1000_write_nvm_eewr_82571(hw, offset, words, data);
508                 break;
509         case e1000_82571:
510         case e1000_82572:
511                 ret_val = e1000e_write_nvm_spi(hw, offset, words, data);
512                 break;
513         default:
514                 ret_val = -E1000_ERR_NVM;
515                 break;
516         }
517
518         return ret_val;
519 }
520
521 /**
522  *  e1000_update_nvm_checksum_82571 - Update EEPROM checksum
523  *  @hw: pointer to the HW structure
524  *
525  *  Updates the EEPROM checksum by reading/adding each word of the EEPROM
526  *  up to the checksum.  Then calculates the EEPROM checksum and writes the
527  *  value to the EEPROM.
528  **/
529 static s32 e1000_update_nvm_checksum_82571(struct e1000_hw *hw)
530 {
531         u32 eecd;
532         s32 ret_val;
533         u16 i;
534
535         ret_val = e1000e_update_nvm_checksum_generic(hw);
536         if (ret_val)
537                 return ret_val;
538
539         /*
540          * If our nvm is an EEPROM, then we're done
541          * otherwise, commit the checksum to the flash NVM.
542          */
543         if (hw->nvm.type != e1000_nvm_flash_hw)
544                 return ret_val;
545
546         /* Check for pending operations. */
547         for (i = 0; i < E1000_FLASH_UPDATES; i++) {
548                 msleep(1);
549                 if ((er32(EECD) & E1000_EECD_FLUPD) == 0)
550                         break;
551         }
552
553         if (i == E1000_FLASH_UPDATES)
554                 return -E1000_ERR_NVM;
555
556         /* Reset the firmware if using STM opcode. */
557         if ((er32(FLOP) & 0xFF00) == E1000_STM_OPCODE) {
558                 /*
559                  * The enabling of and the actual reset must be done
560                  * in two write cycles.
561                  */
562                 ew32(HICR, E1000_HICR_FW_RESET_ENABLE);
563                 e1e_flush();
564                 ew32(HICR, E1000_HICR_FW_RESET);
565         }
566
567         /* Commit the write to flash */
568         eecd = er32(EECD) | E1000_EECD_FLUPD;
569         ew32(EECD, eecd);
570
571         for (i = 0; i < E1000_FLASH_UPDATES; i++) {
572                 msleep(1);
573                 if ((er32(EECD) & E1000_EECD_FLUPD) == 0)
574                         break;
575         }
576
577         if (i == E1000_FLASH_UPDATES)
578                 return -E1000_ERR_NVM;
579
580         return 0;
581 }
582
583 /**
584  *  e1000_validate_nvm_checksum_82571 - Validate EEPROM checksum
585  *  @hw: pointer to the HW structure
586  *
587  *  Calculates the EEPROM checksum by reading/adding each word of the EEPROM
588  *  and then verifies that the sum of the EEPROM is equal to 0xBABA.
589  **/
590 static s32 e1000_validate_nvm_checksum_82571(struct e1000_hw *hw)
591 {
592         if (hw->nvm.type == e1000_nvm_flash_hw)
593                 e1000_fix_nvm_checksum_82571(hw);
594
595         return e1000e_validate_nvm_checksum_generic(hw);
596 }
597
598 /**
599  *  e1000_write_nvm_eewr_82571 - Write to EEPROM for 82573 silicon
600  *  @hw: pointer to the HW structure
601  *  @offset: offset within the EEPROM to be written to
602  *  @words: number of words to write
603  *  @data: 16 bit word(s) to be written to the EEPROM
604  *
605  *  After checking for invalid values, poll the EEPROM to ensure the previous
606  *  command has completed before trying to write the next word.  After write
607  *  poll for completion.
608  *
609  *  If e1000e_update_nvm_checksum is not called after this function, the
610  *  EEPROM will most likely contain an invalid checksum.
611  **/
612 static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
613                                       u16 words, u16 *data)
614 {
615         struct e1000_nvm_info *nvm = &hw->nvm;
616         u32 i;
617         u32 eewr = 0;
618         s32 ret_val = 0;
619
620         /*
621          * A check for invalid values:  offset too large, too many words,
622          * and not enough words.
623          */
624         if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
625             (words == 0)) {
626                 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
627                 return -E1000_ERR_NVM;
628         }
629
630         for (i = 0; i < words; i++) {
631                 eewr = (data[i] << E1000_NVM_RW_REG_DATA) |
632                        ((offset+i) << E1000_NVM_RW_ADDR_SHIFT) |
633                        E1000_NVM_RW_REG_START;
634
635                 ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
636                 if (ret_val)
637                         break;
638
639                 ew32(EEWR, eewr);
640
641                 ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
642                 if (ret_val)
643                         break;
644         }
645
646         return ret_val;
647 }
648
649 /**
650  *  e1000_get_cfg_done_82571 - Poll for configuration done
651  *  @hw: pointer to the HW structure
652  *
653  *  Reads the management control register for the config done bit to be set.
654  **/
655 static s32 e1000_get_cfg_done_82571(struct e1000_hw *hw)
656 {
657         s32 timeout = PHY_CFG_TIMEOUT;
658
659         while (timeout) {
660                 if (er32(EEMNGCTL) &
661                     E1000_NVM_CFG_DONE_PORT_0)
662                         break;
663                 msleep(1);
664                 timeout--;
665         }
666         if (!timeout) {
667                 hw_dbg(hw, "MNG configuration cycle has not completed.\n");
668                 return -E1000_ERR_RESET;
669         }
670
671         return 0;
672 }
673
674 /**
675  *  e1000_set_d0_lplu_state_82571 - Set Low Power Linkup D0 state
676  *  @hw: pointer to the HW structure
677  *  @active: TRUE to enable LPLU, FALSE to disable
678  *
679  *  Sets the LPLU D0 state according to the active flag.  When activating LPLU
680  *  this function also disables smart speed and vice versa.  LPLU will not be
681  *  activated unless the device autonegotiation advertisement meets standards
682  *  of either 10 or 10/100 or 10/100/1000 at all duplexes.  This is a function
683  *  pointer entry point only called by PHY setup routines.
684  **/
685 static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active)
686 {
687         struct e1000_phy_info *phy = &hw->phy;
688         s32 ret_val;
689         u16 data;
690
691         ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
692         if (ret_val)
693                 return ret_val;
694
695         if (active) {
696                 data |= IGP02E1000_PM_D0_LPLU;
697                 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
698                 if (ret_val)
699                         return ret_val;
700
701                 /* When LPLU is enabled, we should disable SmartSpeed */
702                 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
703                 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
704                 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
705                 if (ret_val)
706                         return ret_val;
707         } else {
708                 data &= ~IGP02E1000_PM_D0_LPLU;
709                 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
710                 /*
711                  * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
712                  * during Dx states where the power conservation is most
713                  * important.  During driver activity we should enable
714                  * SmartSpeed, so performance is maintained.
715                  */
716                 if (phy->smart_speed == e1000_smart_speed_on) {
717                         ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
718                                            &data);
719                         if (ret_val)
720                                 return ret_val;
721
722                         data |= IGP01E1000_PSCFR_SMART_SPEED;
723                         ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
724                                            data);
725                         if (ret_val)
726                                 return ret_val;
727                 } else if (phy->smart_speed == e1000_smart_speed_off) {
728                         ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
729                                            &data);
730                         if (ret_val)
731                                 return ret_val;
732
733                         data &= ~IGP01E1000_PSCFR_SMART_SPEED;
734                         ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
735                                            data);
736                         if (ret_val)
737                                 return ret_val;
738                 }
739         }
740
741         return 0;
742 }
743
744 /**
745  *  e1000_reset_hw_82571 - Reset hardware
746  *  @hw: pointer to the HW structure
747  *
748  *  This resets the hardware into a known state.  This is a
749  *  function pointer entry point called by the api module.
750  **/
751 static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
752 {
753         u32 ctrl;
754         u32 extcnf_ctrl;
755         u32 ctrl_ext;
756         u32 icr;
757         s32 ret_val;
758         u16 i = 0;
759
760         /*
761          * Prevent the PCI-E bus from sticking if there is no TLP connection
762          * on the last TLP read/write transaction when MAC is reset.
763          */
764         ret_val = e1000e_disable_pcie_master(hw);
765         if (ret_val)
766                 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
767
768         hw_dbg(hw, "Masking off all interrupts\n");
769         ew32(IMC, 0xffffffff);
770
771         ew32(RCTL, 0);
772         ew32(TCTL, E1000_TCTL_PSP);
773         e1e_flush();
774
775         msleep(10);
776
777         /*
778          * Must acquire the MDIO ownership before MAC reset.
779          * Ownership defaults to firmware after a reset.
780          */
781         if (hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574) {
782                 extcnf_ctrl = er32(EXTCNF_CTRL);
783                 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
784
785                 do {
786                         ew32(EXTCNF_CTRL, extcnf_ctrl);
787                         extcnf_ctrl = er32(EXTCNF_CTRL);
788
789                         if (extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP)
790                                 break;
791
792                         extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
793
794                         msleep(2);
795                         i++;
796                 } while (i < MDIO_OWNERSHIP_TIMEOUT);
797         }
798
799         ctrl = er32(CTRL);
800
801         hw_dbg(hw, "Issuing a global reset to MAC\n");
802         ew32(CTRL, ctrl | E1000_CTRL_RST);
803
804         if (hw->nvm.type == e1000_nvm_flash_hw) {
805                 udelay(10);
806                 ctrl_ext = er32(CTRL_EXT);
807                 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
808                 ew32(CTRL_EXT, ctrl_ext);
809                 e1e_flush();
810         }
811
812         ret_val = e1000e_get_auto_rd_done(hw);
813         if (ret_val)
814                 /* We don't want to continue accessing MAC registers. */
815                 return ret_val;
816
817         /*
818          * Phy configuration from NVM just starts after EECD_AUTO_RD is set.
819          * Need to wait for Phy configuration completion before accessing
820          * NVM and Phy.
821          */
822         if (hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574)
823                 msleep(25);
824
825         /* Clear any pending interrupt events. */
826         ew32(IMC, 0xffffffff);
827         icr = er32(ICR);
828
829         if (hw->mac.type == e1000_82571 &&
830                 hw->dev_spec.e82571.alt_mac_addr_is_present)
831                         e1000e_set_laa_state_82571(hw, true);
832
833         return 0;
834 }
835
836 /**
837  *  e1000_init_hw_82571 - Initialize hardware
838  *  @hw: pointer to the HW structure
839  *
840  *  This inits the hardware readying it for operation.
841  **/
842 static s32 e1000_init_hw_82571(struct e1000_hw *hw)
843 {
844         struct e1000_mac_info *mac = &hw->mac;
845         u32 reg_data;
846         s32 ret_val;
847         u16 i;
848         u16 rar_count = mac->rar_entry_count;
849
850         e1000_initialize_hw_bits_82571(hw);
851
852         /* Initialize identification LED */
853         ret_val = e1000e_id_led_init(hw);
854         if (ret_val) {
855                 hw_dbg(hw, "Error initializing identification LED\n");
856                 return ret_val;
857         }
858
859         /* Disabling VLAN filtering */
860         hw_dbg(hw, "Initializing the IEEE VLAN\n");
861         e1000e_clear_vfta(hw);
862
863         /* Setup the receive address. */
864         /*
865          * If, however, a locally administered address was assigned to the
866          * 82571, we must reserve a RAR for it to work around an issue where
867          * resetting one port will reload the MAC on the other port.
868          */
869         if (e1000e_get_laa_state_82571(hw))
870                 rar_count--;
871         e1000e_init_rx_addrs(hw, rar_count);
872
873         /* Zero out the Multicast HASH table */
874         hw_dbg(hw, "Zeroing the MTA\n");
875         for (i = 0; i < mac->mta_reg_count; i++)
876                 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
877
878         /* Setup link and flow control */
879         ret_val = e1000_setup_link_82571(hw);
880
881         /* Set the transmit descriptor write-back policy */
882         reg_data = er32(TXDCTL(0));
883         reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |
884                    E1000_TXDCTL_FULL_TX_DESC_WB |
885                    E1000_TXDCTL_COUNT_DESC;
886         ew32(TXDCTL(0), reg_data);
887
888         /* ...for both queues. */
889         if (mac->type != e1000_82573 && mac->type != e1000_82574) {
890                 reg_data = er32(TXDCTL(1));
891                 reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |
892                            E1000_TXDCTL_FULL_TX_DESC_WB |
893                            E1000_TXDCTL_COUNT_DESC;
894                 ew32(TXDCTL(1), reg_data);
895         } else {
896                 e1000e_enable_tx_pkt_filtering(hw);
897                 reg_data = er32(GCR);
898                 reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
899                 ew32(GCR, reg_data);
900         }
901
902         /*
903          * Clear all of the statistics registers (clear on read).  It is
904          * important that we do this after we have tried to establish link
905          * because the symbol error count will increment wildly if there
906          * is no link.
907          */
908         e1000_clear_hw_cntrs_82571(hw);
909
910         return ret_val;
911 }
912
913 /**
914  *  e1000_initialize_hw_bits_82571 - Initialize hardware-dependent bits
915  *  @hw: pointer to the HW structure
916  *
917  *  Initializes required hardware-dependent bits needed for normal operation.
918  **/
919 static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw)
920 {
921         u32 reg;
922
923         /* Transmit Descriptor Control 0 */
924         reg = er32(TXDCTL(0));
925         reg |= (1 << 22);
926         ew32(TXDCTL(0), reg);
927
928         /* Transmit Descriptor Control 1 */
929         reg = er32(TXDCTL(1));
930         reg |= (1 << 22);
931         ew32(TXDCTL(1), reg);
932
933         /* Transmit Arbitration Control 0 */
934         reg = er32(TARC(0));
935         reg &= ~(0xF << 27); /* 30:27 */
936         switch (hw->mac.type) {
937         case e1000_82571:
938         case e1000_82572:
939                 reg |= (1 << 23) | (1 << 24) | (1 << 25) | (1 << 26);
940                 break;
941         default:
942                 break;
943         }
944         ew32(TARC(0), reg);
945
946         /* Transmit Arbitration Control 1 */
947         reg = er32(TARC(1));
948         switch (hw->mac.type) {
949         case e1000_82571:
950         case e1000_82572:
951                 reg &= ~((1 << 29) | (1 << 30));
952                 reg |= (1 << 22) | (1 << 24) | (1 << 25) | (1 << 26);
953                 if (er32(TCTL) & E1000_TCTL_MULR)
954                         reg &= ~(1 << 28);
955                 else
956                         reg |= (1 << 28);
957                 ew32(TARC(1), reg);
958                 break;
959         default:
960                 break;
961         }
962
963         /* Device Control */
964         if (hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574) {
965                 reg = er32(CTRL);
966                 reg &= ~(1 << 29);
967                 ew32(CTRL, reg);
968         }
969
970         /* Extended Device Control */
971         if (hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574) {
972                 reg = er32(CTRL_EXT);
973                 reg &= ~(1 << 23);
974                 reg |= (1 << 22);
975                 ew32(CTRL_EXT, reg);
976         }
977
978         if (hw->mac.type == e1000_82571) {
979                 reg = er32(PBA_ECC);
980                 reg |= E1000_PBA_ECC_CORR_EN;
981                 ew32(PBA_ECC, reg);
982         }
983
984         /* PCI-Ex Control Registers */
985         if (hw->mac.type == e1000_82574) {
986                 reg = er32(GCR);
987                 reg |= (1 << 22);
988                 ew32(GCR, reg);
989
990                 reg = er32(GCR2);
991                 reg |= 1;
992                 ew32(GCR2, reg);
993         }
994
995         return;
996 }
997
998 /**
999  *  e1000e_clear_vfta - Clear VLAN filter table
1000  *  @hw: pointer to the HW structure
1001  *
1002  *  Clears the register array which contains the VLAN filter table by
1003  *  setting all the values to 0.
1004  **/
1005 void e1000e_clear_vfta(struct e1000_hw *hw)
1006 {
1007         u32 offset;
1008         u32 vfta_value = 0;
1009         u32 vfta_offset = 0;
1010         u32 vfta_bit_in_reg = 0;
1011
1012         if (hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574) {
1013                 if (hw->mng_cookie.vlan_id != 0) {
1014                         /*
1015                          * The VFTA is a 4096b bit-field, each identifying
1016                          * a single VLAN ID.  The following operations
1017                          * determine which 32b entry (i.e. offset) into the
1018                          * array we want to set the VLAN ID (i.e. bit) of
1019                          * the manageability unit.
1020                          */
1021                         vfta_offset = (hw->mng_cookie.vlan_id >>
1022                                        E1000_VFTA_ENTRY_SHIFT) &
1023                                       E1000_VFTA_ENTRY_MASK;
1024                         vfta_bit_in_reg = 1 << (hw->mng_cookie.vlan_id &
1025                                                E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
1026                 }
1027         }
1028         for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
1029                 /*
1030                  * If the offset we want to clear is the same offset of the
1031                  * manageability VLAN ID, then clear all bits except that of
1032                  * the manageability unit.
1033                  */
1034                 vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
1035                 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, vfta_value);
1036                 e1e_flush();
1037         }
1038 }
1039
1040 /**
1041  *  e1000_check_mng_mode_82574 - Check manageability is enabled
1042  *  @hw: pointer to the HW structure
1043  *
1044  *  Reads the NVM Initialization Control Word 2 and returns true
1045  *  (>0) if any manageability is enabled, else false (0).
1046  **/
1047 static bool e1000_check_mng_mode_82574(struct e1000_hw *hw)
1048 {
1049         u16 data;
1050
1051         e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &data);
1052         return (data & E1000_NVM_INIT_CTRL2_MNGM) != 0;
1053 }
1054
1055 /**
1056  *  e1000_led_on_82574 - Turn LED on
1057  *  @hw: pointer to the HW structure
1058  *
1059  *  Turn LED on.
1060  **/
1061 static s32 e1000_led_on_82574(struct e1000_hw *hw)
1062 {
1063         u32 ctrl;
1064         u32 i;
1065
1066         ctrl = hw->mac.ledctl_mode2;
1067         if (!(E1000_STATUS_LU & er32(STATUS))) {
1068                 /*
1069                  * If no link, then turn LED on by setting the invert bit
1070                  * for each LED that's "on" (0x0E) in ledctl_mode2.
1071                  */
1072                 for (i = 0; i < 4; i++)
1073                         if (((hw->mac.ledctl_mode2 >> (i * 8)) & 0xFF) ==
1074                             E1000_LEDCTL_MODE_LED_ON)
1075                                 ctrl |= (E1000_LEDCTL_LED0_IVRT << (i * 8));
1076         }
1077         ew32(LEDCTL, ctrl);
1078
1079         return 0;
1080 }
1081
1082 /**
1083  *  e1000_update_mc_addr_list_82571 - Update Multicast addresses
1084  *  @hw: pointer to the HW structure
1085  *  @mc_addr_list: array of multicast addresses to program
1086  *  @mc_addr_count: number of multicast addresses to program
1087  *  @rar_used_count: the first RAR register free to program
1088  *  @rar_count: total number of supported Receive Address Registers
1089  *
1090  *  Updates the Receive Address Registers and Multicast Table Array.
1091  *  The caller must have a packed mc_addr_list of multicast addresses.
1092  *  The parameter rar_count will usually be hw->mac.rar_entry_count
1093  *  unless there are workarounds that change this.
1094  **/
1095 static void e1000_update_mc_addr_list_82571(struct e1000_hw *hw,
1096                                             u8 *mc_addr_list,
1097                                             u32 mc_addr_count,
1098                                             u32 rar_used_count,
1099                                             u32 rar_count)
1100 {
1101         if (e1000e_get_laa_state_82571(hw))
1102                 rar_count--;
1103
1104         e1000e_update_mc_addr_list_generic(hw, mc_addr_list, mc_addr_count,
1105                                            rar_used_count, rar_count);
1106 }
1107
1108 /**
1109  *  e1000_setup_link_82571 - Setup flow control and link settings
1110  *  @hw: pointer to the HW structure
1111  *
1112  *  Determines which flow control settings to use, then configures flow
1113  *  control.  Calls the appropriate media-specific link configuration
1114  *  function.  Assuming the adapter has a valid link partner, a valid link
1115  *  should be established.  Assumes the hardware has previously been reset
1116  *  and the transmitter and receiver are not enabled.
1117  **/
1118 static s32 e1000_setup_link_82571(struct e1000_hw *hw)
1119 {
1120         /*
1121          * 82573 does not have a word in the NVM to determine
1122          * the default flow control setting, so we explicitly
1123          * set it to full.
1124          */
1125         if ((hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574) &&
1126             hw->fc.requested_mode == e1000_fc_default)
1127                 hw->fc.requested_mode = e1000_fc_full;
1128
1129         return e1000e_setup_link(hw);
1130 }
1131
1132 /**
1133  *  e1000_setup_copper_link_82571 - Configure copper link settings
1134  *  @hw: pointer to the HW structure
1135  *
1136  *  Configures the link for auto-neg or forced speed and duplex.  Then we check
1137  *  for link, once link is established calls to configure collision distance
1138  *  and flow control are called.
1139  **/
1140 static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw)
1141 {
1142         u32 ctrl;
1143         u32 led_ctrl;
1144         s32 ret_val;
1145
1146         ctrl = er32(CTRL);
1147         ctrl |= E1000_CTRL_SLU;
1148         ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1149         ew32(CTRL, ctrl);
1150
1151         switch (hw->phy.type) {
1152         case e1000_phy_m88:
1153         case e1000_phy_bm:
1154                 ret_val = e1000e_copper_link_setup_m88(hw);
1155                 break;
1156         case e1000_phy_igp_2:
1157                 ret_val = e1000e_copper_link_setup_igp(hw);
1158                 /* Setup activity LED */
1159                 led_ctrl = er32(LEDCTL);
1160                 led_ctrl &= IGP_ACTIVITY_LED_MASK;
1161                 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
1162                 ew32(LEDCTL, led_ctrl);
1163                 break;
1164         default:
1165                 return -E1000_ERR_PHY;
1166                 break;
1167         }
1168
1169         if (ret_val)
1170                 return ret_val;
1171
1172         ret_val = e1000e_setup_copper_link(hw);
1173
1174         return ret_val;
1175 }
1176
1177 /**
1178  *  e1000_setup_fiber_serdes_link_82571 - Setup link for fiber/serdes
1179  *  @hw: pointer to the HW structure
1180  *
1181  *  Configures collision distance and flow control for fiber and serdes links.
1182  *  Upon successful setup, poll for link.
1183  **/
1184 static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw)
1185 {
1186         switch (hw->mac.type) {
1187         case e1000_82571:
1188         case e1000_82572:
1189                 /*
1190                  * If SerDes loopback mode is entered, there is no form
1191                  * of reset to take the adapter out of that mode.  So we
1192                  * have to explicitly take the adapter out of loopback
1193                  * mode.  This prevents drivers from twiddling their thumbs
1194                  * if another tool failed to take it out of loopback mode.
1195                  */
1196                 ew32(SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1197                 break;
1198         default:
1199                 break;
1200         }
1201
1202         return e1000e_setup_fiber_serdes_link(hw);
1203 }
1204
1205 /**
1206  *  e1000_valid_led_default_82571 - Verify a valid default LED config
1207  *  @hw: pointer to the HW structure
1208  *  @data: pointer to the NVM (EEPROM)
1209  *
1210  *  Read the EEPROM for the current default LED configuration.  If the
1211  *  LED configuration is not valid, set to a valid LED configuration.
1212  **/
1213 static s32 e1000_valid_led_default_82571(struct e1000_hw *hw, u16 *data)
1214 {
1215         s32 ret_val;
1216
1217         ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
1218         if (ret_val) {
1219                 hw_dbg(hw, "NVM Read Error\n");
1220                 return ret_val;
1221         }
1222
1223         if ((hw->mac.type == e1000_82573 || hw->mac.type == e1000_82574) &&
1224             *data == ID_LED_RESERVED_F746)
1225                 *data = ID_LED_DEFAULT_82573;
1226         else if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF)
1227                 *data = ID_LED_DEFAULT;
1228
1229         return 0;
1230 }
1231
1232 /**
1233  *  e1000e_get_laa_state_82571 - Get locally administered address state
1234  *  @hw: pointer to the HW structure
1235  *
1236  *  Retrieve and return the current locally administered address state.
1237  **/
1238 bool e1000e_get_laa_state_82571(struct e1000_hw *hw)
1239 {
1240         if (hw->mac.type != e1000_82571)
1241                 return 0;
1242
1243         return hw->dev_spec.e82571.laa_is_present;
1244 }
1245
1246 /**
1247  *  e1000e_set_laa_state_82571 - Set locally administered address state
1248  *  @hw: pointer to the HW structure
1249  *  @state: enable/disable locally administered address
1250  *
1251  *  Enable/Disable the current locally administers address state.
1252  **/
1253 void e1000e_set_laa_state_82571(struct e1000_hw *hw, bool state)
1254 {
1255         if (hw->mac.type != e1000_82571)
1256                 return;
1257
1258         hw->dev_spec.e82571.laa_is_present = state;
1259
1260         /* If workaround is activated... */
1261         if (state)
1262                 /*
1263                  * Hold a copy of the LAA in RAR[14] This is done so that
1264                  * between the time RAR[0] gets clobbered and the time it
1265                  * gets fixed, the actual LAA is in one of the RARs and no
1266                  * incoming packets directed to this port are dropped.
1267                  * Eventually the LAA will be in RAR[0] and RAR[14].
1268                  */
1269                 e1000e_rar_set(hw, hw->mac.addr, hw->mac.rar_entry_count - 1);
1270 }
1271
1272 /**
1273  *  e1000_fix_nvm_checksum_82571 - Fix EEPROM checksum
1274  *  @hw: pointer to the HW structure
1275  *
1276  *  Verifies that the EEPROM has completed the update.  After updating the
1277  *  EEPROM, we need to check bit 15 in work 0x23 for the checksum fix.  If
1278  *  the checksum fix is not implemented, we need to set the bit and update
1279  *  the checksum.  Otherwise, if bit 15 is set and the checksum is incorrect,
1280  *  we need to return bad checksum.
1281  **/
1282 static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
1283 {
1284         struct e1000_nvm_info *nvm = &hw->nvm;
1285         s32 ret_val;
1286         u16 data;
1287
1288         if (nvm->type != e1000_nvm_flash_hw)
1289                 return 0;
1290
1291         /*
1292          * Check bit 4 of word 10h.  If it is 0, firmware is done updating
1293          * 10h-12h.  Checksum may need to be fixed.
1294          */
1295         ret_val = e1000_read_nvm(hw, 0x10, 1, &data);
1296         if (ret_val)
1297                 return ret_val;
1298
1299         if (!(data & 0x10)) {
1300                 /*
1301                  * Read 0x23 and check bit 15.  This bit is a 1
1302                  * when the checksum has already been fixed.  If
1303                  * the checksum is still wrong and this bit is a
1304                  * 1, we need to return bad checksum.  Otherwise,
1305                  * we need to set this bit to a 1 and update the
1306                  * checksum.
1307                  */
1308                 ret_val = e1000_read_nvm(hw, 0x23, 1, &data);
1309                 if (ret_val)
1310                         return ret_val;
1311
1312                 if (!(data & 0x8000)) {
1313                         data |= 0x8000;
1314                         ret_val = e1000_write_nvm(hw, 0x23, 1, &data);
1315                         if (ret_val)
1316                                 return ret_val;
1317                         ret_val = e1000e_update_nvm_checksum(hw);
1318                 }
1319         }
1320
1321         return 0;
1322 }
1323
1324 /**
1325  *  e1000_clear_hw_cntrs_82571 - Clear device specific hardware counters
1326  *  @hw: pointer to the HW structure
1327  *
1328  *  Clears the hardware counters by reading the counter registers.
1329  **/
1330 static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw)
1331 {
1332         u32 temp;
1333
1334         e1000e_clear_hw_cntrs_base(hw);
1335
1336         temp = er32(PRC64);
1337         temp = er32(PRC127);
1338         temp = er32(PRC255);
1339         temp = er32(PRC511);
1340         temp = er32(PRC1023);
1341         temp = er32(PRC1522);
1342         temp = er32(PTC64);
1343         temp = er32(PTC127);
1344         temp = er32(PTC255);
1345         temp = er32(PTC511);
1346         temp = er32(PTC1023);
1347         temp = er32(PTC1522);
1348
1349         temp = er32(ALGNERRC);
1350         temp = er32(RXERRC);
1351         temp = er32(TNCRS);
1352         temp = er32(CEXTERR);
1353         temp = er32(TSCTC);
1354         temp = er32(TSCTFC);
1355
1356         temp = er32(MGTPRC);
1357         temp = er32(MGTPDC);
1358         temp = er32(MGTPTC);
1359
1360         temp = er32(IAC);
1361         temp = er32(ICRXOC);
1362
1363         temp = er32(ICRXPTC);
1364         temp = er32(ICRXATC);
1365         temp = er32(ICTXPTC);
1366         temp = er32(ICTXATC);
1367         temp = er32(ICTXQEC);
1368         temp = er32(ICTXQMTC);
1369         temp = er32(ICRXDMTC);
1370 }
1371
1372 static struct e1000_mac_operations e82571_mac_ops = {
1373         /* .check_mng_mode: mac type dependent */
1374         /* .check_for_link: media type dependent */
1375         .cleanup_led            = e1000e_cleanup_led_generic,
1376         .clear_hw_cntrs         = e1000_clear_hw_cntrs_82571,
1377         .get_bus_info           = e1000e_get_bus_info_pcie,
1378         /* .get_link_up_info: media type dependent */
1379         /* .led_on: mac type dependent */
1380         .led_off                = e1000e_led_off_generic,
1381         .update_mc_addr_list    = e1000_update_mc_addr_list_82571,
1382         .reset_hw               = e1000_reset_hw_82571,
1383         .init_hw                = e1000_init_hw_82571,
1384         .setup_link             = e1000_setup_link_82571,
1385         /* .setup_physical_interface: media type dependent */
1386 };
1387
1388 static struct e1000_phy_operations e82_phy_ops_igp = {
1389         .acquire_phy            = e1000_get_hw_semaphore_82571,
1390         .check_reset_block      = e1000e_check_reset_block_generic,
1391         .commit_phy             = NULL,
1392         .force_speed_duplex     = e1000e_phy_force_speed_duplex_igp,
1393         .get_cfg_done           = e1000_get_cfg_done_82571,
1394         .get_cable_length       = e1000e_get_cable_length_igp_2,
1395         .get_phy_info           = e1000e_get_phy_info_igp,
1396         .read_phy_reg           = e1000e_read_phy_reg_igp,
1397         .release_phy            = e1000_put_hw_semaphore_82571,
1398         .reset_phy              = e1000e_phy_hw_reset_generic,
1399         .set_d0_lplu_state      = e1000_set_d0_lplu_state_82571,
1400         .set_d3_lplu_state      = e1000e_set_d3_lplu_state,
1401         .write_phy_reg          = e1000e_write_phy_reg_igp,
1402         .cfg_on_link_up         = NULL,
1403 };
1404
1405 static struct e1000_phy_operations e82_phy_ops_m88 = {
1406         .acquire_phy            = e1000_get_hw_semaphore_82571,
1407         .check_reset_block      = e1000e_check_reset_block_generic,
1408         .commit_phy             = e1000e_phy_sw_reset,
1409         .force_speed_duplex     = e1000e_phy_force_speed_duplex_m88,
1410         .get_cfg_done           = e1000e_get_cfg_done,
1411         .get_cable_length       = e1000e_get_cable_length_m88,
1412         .get_phy_info           = e1000e_get_phy_info_m88,
1413         .read_phy_reg           = e1000e_read_phy_reg_m88,
1414         .release_phy            = e1000_put_hw_semaphore_82571,
1415         .reset_phy              = e1000e_phy_hw_reset_generic,
1416         .set_d0_lplu_state      = e1000_set_d0_lplu_state_82571,
1417         .set_d3_lplu_state      = e1000e_set_d3_lplu_state,
1418         .write_phy_reg          = e1000e_write_phy_reg_m88,
1419         .cfg_on_link_up         = NULL,
1420 };
1421
1422 static struct e1000_phy_operations e82_phy_ops_bm = {
1423         .acquire_phy            = e1000_get_hw_semaphore_82571,
1424         .check_reset_block      = e1000e_check_reset_block_generic,
1425         .commit_phy             = e1000e_phy_sw_reset,
1426         .force_speed_duplex     = e1000e_phy_force_speed_duplex_m88,
1427         .get_cfg_done           = e1000e_get_cfg_done,
1428         .get_cable_length       = e1000e_get_cable_length_m88,
1429         .get_phy_info           = e1000e_get_phy_info_m88,
1430         .read_phy_reg           = e1000e_read_phy_reg_bm2,
1431         .release_phy            = e1000_put_hw_semaphore_82571,
1432         .reset_phy              = e1000e_phy_hw_reset_generic,
1433         .set_d0_lplu_state      = e1000_set_d0_lplu_state_82571,
1434         .set_d3_lplu_state      = e1000e_set_d3_lplu_state,
1435         .write_phy_reg          = e1000e_write_phy_reg_bm2,
1436         .cfg_on_link_up         = NULL,
1437 };
1438
1439 static struct e1000_nvm_operations e82571_nvm_ops = {
1440         .acquire_nvm            = e1000_acquire_nvm_82571,
1441         .read_nvm               = e1000e_read_nvm_eerd,
1442         .release_nvm            = e1000_release_nvm_82571,
1443         .update_nvm             = e1000_update_nvm_checksum_82571,
1444         .valid_led_default      = e1000_valid_led_default_82571,
1445         .validate_nvm           = e1000_validate_nvm_checksum_82571,
1446         .write_nvm              = e1000_write_nvm_82571,
1447 };
1448
1449 struct e1000_info e1000_82571_info = {
1450         .mac                    = e1000_82571,
1451         .flags                  = FLAG_HAS_HW_VLAN_FILTER
1452                                   | FLAG_HAS_JUMBO_FRAMES
1453                                   | FLAG_HAS_WOL
1454                                   | FLAG_APME_IN_CTRL3
1455                                   | FLAG_RX_CSUM_ENABLED
1456                                   | FLAG_HAS_CTRLEXT_ON_LOAD
1457                                   | FLAG_HAS_SMART_POWER_DOWN
1458                                   | FLAG_RESET_OVERWRITES_LAA /* errata */
1459                                   | FLAG_TARC_SPEED_MODE_BIT /* errata */
1460                                   | FLAG_APME_CHECK_PORT_B,
1461         .pba                    = 38,
1462         .get_variants           = e1000_get_variants_82571,
1463         .mac_ops                = &e82571_mac_ops,
1464         .phy_ops                = &e82_phy_ops_igp,
1465         .nvm_ops                = &e82571_nvm_ops,
1466 };
1467
1468 struct e1000_info e1000_82572_info = {
1469         .mac                    = e1000_82572,
1470         .flags                  = FLAG_HAS_HW_VLAN_FILTER
1471                                   | FLAG_HAS_JUMBO_FRAMES
1472                                   | FLAG_HAS_WOL
1473                                   | FLAG_APME_IN_CTRL3
1474                                   | FLAG_RX_CSUM_ENABLED
1475                                   | FLAG_HAS_CTRLEXT_ON_LOAD
1476                                   | FLAG_TARC_SPEED_MODE_BIT, /* errata */
1477         .pba                    = 38,
1478         .get_variants           = e1000_get_variants_82571,
1479         .mac_ops                = &e82571_mac_ops,
1480         .phy_ops                = &e82_phy_ops_igp,
1481         .nvm_ops                = &e82571_nvm_ops,
1482 };
1483
1484 struct e1000_info e1000_82573_info = {
1485         .mac                    = e1000_82573,
1486         .flags                  = FLAG_HAS_HW_VLAN_FILTER
1487                                   | FLAG_HAS_JUMBO_FRAMES
1488                                   | FLAG_HAS_WOL
1489                                   | FLAG_APME_IN_CTRL3
1490                                   | FLAG_RX_CSUM_ENABLED
1491                                   | FLAG_HAS_SMART_POWER_DOWN
1492                                   | FLAG_HAS_AMT
1493                                   | FLAG_HAS_ERT
1494                                   | FLAG_HAS_SWSM_ON_LOAD,
1495         .pba                    = 20,
1496         .get_variants           = e1000_get_variants_82571,
1497         .mac_ops                = &e82571_mac_ops,
1498         .phy_ops                = &e82_phy_ops_m88,
1499         .nvm_ops                = &e82571_nvm_ops,
1500 };
1501
1502 struct e1000_info e1000_82574_info = {
1503         .mac                    = e1000_82574,
1504         .flags                  = FLAG_HAS_HW_VLAN_FILTER
1505                                   | FLAG_HAS_MSIX
1506                                   | FLAG_HAS_JUMBO_FRAMES
1507                                   | FLAG_HAS_WOL
1508                                   | FLAG_APME_IN_CTRL3
1509                                   | FLAG_RX_CSUM_ENABLED
1510                                   | FLAG_HAS_SMART_POWER_DOWN
1511                                   | FLAG_HAS_AMT
1512                                   | FLAG_HAS_CTRLEXT_ON_LOAD,
1513         .pba                    = 20,
1514         .get_variants           = e1000_get_variants_82571,
1515         .mac_ops                = &e82571_mac_ops,
1516         .phy_ops                = &e82_phy_ops_bm,
1517         .nvm_ops                = &e82571_nvm_ops,
1518 };
1519