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authorAuke Kok <auke-jan.h.kok@intel.com>2007-09-17 15:30:59 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:50:40 -0400
commitbc7f75fa97884d41efbfde1397b621fefb2550b4 (patch)
tree037910bdb72ae1c1fc179f47beb1f9d00803dbf5 /drivers/net/e1000e
parentcbdb9e43d1fc50cfa509b1006e7252dc4ea53aa0 (diff)
[E1000E]: New pci-express e1000 driver (currently for ICH9 devices only)
This driver implements support for the ICH9 on-board LAN ethernet device. The device is similar to ICH8. The driver encompasses code to support 82571/2/3, es2lan and ICH8 devices as well, but those device IDs are disabled and will be "lifted" from the e1000 driver over one at a time once this driver receives some more live time. Changes to the last snapshot posted are exclusively in the internal hardware API organization. Many thanks to Jeff Garzik for jumping in and getting this organized with a keen eye on the future layout. [ Integrated napi_struct patch from Auke as well... -DaveM ] Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/e1000e')
-rw-r--r--drivers/net/e1000e/82571.c1351
-rw-r--r--drivers/net/e1000e/Makefile37
-rw-r--r--drivers/net/e1000e/defines.h739
-rw-r--r--drivers/net/e1000e/e1000.h514
-rw-r--r--drivers/net/e1000e/es2lan.c1232
-rw-r--r--drivers/net/e1000e/ethtool.c1774
-rw-r--r--drivers/net/e1000e/hw.h864
-rw-r--r--drivers/net/e1000e/ich8lan.c2225
-rw-r--r--drivers/net/e1000e/lib.c2487
-rw-r--r--drivers/net/e1000e/netdev.c4441
-rw-r--r--drivers/net/e1000e/param.c382
-rw-r--r--drivers/net/e1000e/phy.c1773
12 files changed, 17819 insertions, 0 deletions
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
new file mode 100644
index 000000000000..cf70522fc851
--- /dev/null
+++ b/drivers/net/e1000e/82571.c
@@ -0,0 +1,1351 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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 (Fiber)
32 * 82572EI Gigabit Ethernet Controller (Copper)
33 * 82572EI Gigabit Ethernet Controller (Fiber)
34 * 82572EI Gigabit Ethernet Controller
35 * 82573V Gigabit Ethernet Controller (Copper)
36 * 82573E Gigabit Ethernet Controller (Copper)
37 * 82573L Gigabit Ethernet Controller
38 */
39
40#include <linux/netdevice.h>
41#include <linux/delay.h>
42#include <linux/pci.h>
43
44#include "e1000.h"
45
46#define ID_LED_RESERVED_F746 0xF746
47#define ID_LED_DEFAULT_82573 ((ID_LED_DEF1_DEF2 << 12) | \
48 (ID_LED_OFF1_ON2 << 8) | \
49 (ID_LED_DEF1_DEF2 << 4) | \
50 (ID_LED_DEF1_DEF2))
51
52#define E1000_GCR_L1_ACT_WITHOUT_L0S_RX 0x08000000
53
54static s32 e1000_get_phy_id_82571(struct e1000_hw *hw);
55static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw);
56static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw);
57static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
58 u16 words, u16 *data);
59static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw);
60static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw);
61static s32 e1000_setup_link_82571(struct e1000_hw *hw);
62static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw);
63
64/**
65 * e1000_init_phy_params_82571 - Init PHY func ptrs.
66 * @hw: pointer to the HW structure
67 *
68 * This is a function pointer entry point called by the api module.
69 **/
70static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
71{
72 struct e1000_phy_info *phy = &hw->phy;
73 s32 ret_val;
74
75 if (hw->media_type != e1000_media_type_copper) {
76 phy->type = e1000_phy_none;
77 return 0;
78 }
79
80 phy->addr = 1;
81 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
82 phy->reset_delay_us = 100;
83
84 switch (hw->mac.type) {
85 case e1000_82571:
86 case e1000_82572:
87 phy->type = e1000_phy_igp_2;
88 break;
89 case e1000_82573:
90 phy->type = e1000_phy_m88;
91 break;
92 default:
93 return -E1000_ERR_PHY;
94 break;
95 }
96
97 /* This can only be done after all function pointers are setup. */
98 ret_val = e1000_get_phy_id_82571(hw);
99
100 /* Verify phy id */
101 switch (hw->mac.type) {
102 case e1000_82571:
103 case e1000_82572:
104 if (phy->id != IGP01E1000_I_PHY_ID)
105 return -E1000_ERR_PHY;
106 break;
107 case e1000_82573:
108 if (phy->id != M88E1111_I_PHY_ID)
109 return -E1000_ERR_PHY;
110 break;
111 default:
112 return -E1000_ERR_PHY;
113 break;
114 }
115
116 return 0;
117}
118
119/**
120 * e1000_init_nvm_params_82571 - Init NVM func ptrs.
121 * @hw: pointer to the HW structure
122 *
123 * This is a function pointer entry point called by the api module.
124 **/
125static s32 e1000_init_nvm_params_82571(struct e1000_hw *hw)
126{
127 struct e1000_nvm_info *nvm = &hw->nvm;
128 u32 eecd = er32(EECD);
129 u16 size;
130
131 nvm->opcode_bits = 8;
132 nvm->delay_usec = 1;
133 switch (nvm->override) {
134 case e1000_nvm_override_spi_large:
135 nvm->page_size = 32;
136 nvm->address_bits = 16;
137 break;
138 case e1000_nvm_override_spi_small:
139 nvm->page_size = 8;
140 nvm->address_bits = 8;
141 break;
142 default:
143 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
144 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
145 break;
146 }
147
148 switch (hw->mac.type) {
149 case e1000_82573:
150 if (((eecd >> 15) & 0x3) == 0x3) {
151 nvm->type = e1000_nvm_flash_hw;
152 nvm->word_size = 2048;
153 /* Autonomous Flash update bit must be cleared due
154 * to Flash update issue.
155 */
156 eecd &= ~E1000_EECD_AUPDEN;
157 ew32(EECD, eecd);
158 break;
159 }
160 /* Fall Through */
161 default:
162 nvm->type = e1000_nvm_eeprom_spi;
163 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
164 E1000_EECD_SIZE_EX_SHIFT);
165 /* Added to a constant, "size" becomes the left-shift value
166 * for setting word_size.
167 */
168 size += NVM_WORD_SIZE_BASE_SHIFT;
169 nvm->word_size = 1 << size;
170 break;
171 }
172
173 return 0;
174}
175
176/**
177 * e1000_init_mac_params_82571 - Init MAC func ptrs.
178 * @hw: pointer to the HW structure
179 *
180 * This is a function pointer entry point called by the api module.
181 **/
182static s32 e1000_init_mac_params_82571(struct e1000_adapter *adapter)
183{
184 struct e1000_hw *hw = &adapter->hw;
185 struct e1000_mac_info *mac = &hw->mac;
186 struct e1000_mac_operations *func = &mac->ops;
187
188 /* Set media type */
189 switch (adapter->pdev->device) {
190 case E1000_DEV_ID_82571EB_FIBER:
191 case E1000_DEV_ID_82572EI_FIBER:
192 case E1000_DEV_ID_82571EB_QUAD_FIBER:
193 hw->media_type = e1000_media_type_fiber;
194 break;
195 case E1000_DEV_ID_82571EB_SERDES:
196 case E1000_DEV_ID_82572EI_SERDES:
197 hw->media_type = e1000_media_type_internal_serdes;
198 break;
199 default:
200 hw->media_type = e1000_media_type_copper;
201 break;
202 }
203
204 /* Set mta register count */
205 mac->mta_reg_count = 128;
206 /* Set rar entry count */
207 mac->rar_entry_count = E1000_RAR_ENTRIES;
208 /* Set if manageability features are enabled. */
209 mac->arc_subsystem_valid =
210 (er32(FWSM) & E1000_FWSM_MODE_MASK) ? 1 : 0;
211
212 /* check for link */
213 switch (hw->media_type) {
214 case e1000_media_type_copper:
215 func->setup_physical_interface = e1000_setup_copper_link_82571;
216 func->check_for_link = e1000e_check_for_copper_link;
217 func->get_link_up_info = e1000e_get_speed_and_duplex_copper;
218 break;
219 case e1000_media_type_fiber:
220 func->setup_physical_interface = e1000_setup_fiber_serdes_link_82571;
221 func->check_for_link = e1000e_check_for_fiber_link;
222 func->get_link_up_info = e1000e_get_speed_and_duplex_fiber_serdes;
223 break;
224 case e1000_media_type_internal_serdes:
225 func->setup_physical_interface = e1000_setup_fiber_serdes_link_82571;
226 func->check_for_link = e1000e_check_for_serdes_link;
227 func->get_link_up_info = e1000e_get_speed_and_duplex_fiber_serdes;
228 break;
229 default:
230 return -E1000_ERR_CONFIG;
231 break;
232 }
233
234 return 0;
235}
236
237static s32 e1000_get_invariants_82571(struct e1000_adapter *adapter)
238{
239 struct e1000_hw *hw = &adapter->hw;
240 static int global_quad_port_a; /* global port a indication */
241 struct pci_dev *pdev = adapter->pdev;
242 u16 eeprom_data = 0;
243 int is_port_b = er32(STATUS) & E1000_STATUS_FUNC_1;
244 s32 rc;
245
246 rc = e1000_init_mac_params_82571(adapter);
247 if (rc)
248 return rc;
249
250 rc = e1000_init_nvm_params_82571(hw);
251 if (rc)
252 return rc;
253
254 rc = e1000_init_phy_params_82571(hw);
255 if (rc)
256 return rc;
257
258 /* tag quad port adapters first, it's used below */
259 switch (pdev->device) {
260 case E1000_DEV_ID_82571EB_QUAD_COPPER:
261 case E1000_DEV_ID_82571EB_QUAD_FIBER:
262 case E1000_DEV_ID_82571EB_QUAD_COPPER_LP:
263 adapter->flags |= FLAG_IS_QUAD_PORT;
264 /* mark the first port */
265 if (global_quad_port_a == 0)
266 adapter->flags |= FLAG_IS_QUAD_PORT_A;
267 /* Reset for multiple quad port adapters */
268 global_quad_port_a++;
269 if (global_quad_port_a == 4)
270 global_quad_port_a = 0;
271 break;
272 default:
273 break;
274 }
275
276 switch (adapter->hw.mac.type) {
277 case e1000_82571:
278 /* these dual ports don't have WoL on port B at all */
279 if (((pdev->device == E1000_DEV_ID_82571EB_FIBER) ||
280 (pdev->device == E1000_DEV_ID_82571EB_SERDES) ||
281 (pdev->device == E1000_DEV_ID_82571EB_COPPER)) &&
282 (is_port_b))
283 adapter->flags &= ~FLAG_HAS_WOL;
284 /* quad ports only support WoL on port A */
285 if (adapter->flags & FLAG_IS_QUAD_PORT &&
286 (!adapter->flags & FLAG_IS_QUAD_PORT_A))
287 adapter->flags &= ~FLAG_HAS_WOL;
288 break;
289
290 case e1000_82573:
291 if (pdev->device == E1000_DEV_ID_82573L) {
292 e1000_read_nvm(&adapter->hw, NVM_INIT_3GIO_3, 1,
293 &eeprom_data);
294 if (eeprom_data & NVM_WORD1A_ASPM_MASK)
295 adapter->flags &= ~FLAG_HAS_JUMBO_FRAMES;
296 }
297 break;
298 default:
299 break;
300 }
301
302 return 0;
303}
304
305/**
306 * e1000_get_phy_id_82571 - Retrieve the PHY ID and revision
307 * @hw: pointer to the HW structure
308 *
309 * Reads the PHY registers and stores the PHY ID and possibly the PHY
310 * revision in the hardware structure.
311 **/
312static s32 e1000_get_phy_id_82571(struct e1000_hw *hw)
313{
314 struct e1000_phy_info *phy = &hw->phy;
315
316 switch (hw->mac.type) {
317 case e1000_82571:
318 case e1000_82572:
319 /* The 82571 firmware may still be configuring the PHY.
320 * In this case, we cannot access the PHY until the
321 * configuration is done. So we explicitly set the
322 * PHY ID. */
323 phy->id = IGP01E1000_I_PHY_ID;
324 break;
325 case e1000_82573:
326 return e1000e_get_phy_id(hw);
327 break;
328 default:
329 return -E1000_ERR_PHY;
330 break;
331 }
332
333 return 0;
334}
335
336/**
337 * e1000_get_hw_semaphore_82571 - Acquire hardware semaphore
338 * @hw: pointer to the HW structure
339 *
340 * Acquire the HW semaphore to access the PHY or NVM
341 **/
342static s32 e1000_get_hw_semaphore_82571(struct e1000_hw *hw)
343{
344 u32 swsm;
345 s32 timeout = hw->nvm.word_size + 1;
346 s32 i = 0;
347
348 /* Get the FW semaphore. */
349 for (i = 0; i < timeout; i++) {
350 swsm = er32(SWSM);
351 ew32(SWSM, swsm | E1000_SWSM_SWESMBI);
352
353 /* Semaphore acquired if bit latched */
354 if (er32(SWSM) & E1000_SWSM_SWESMBI)
355 break;
356
357 udelay(50);
358 }
359
360 if (i == timeout) {
361 /* Release semaphores */
362 e1000e_put_hw_semaphore(hw);
363 hw_dbg(hw, "Driver can't access the NVM\n");
364 return -E1000_ERR_NVM;
365 }
366
367 return 0;
368}
369
370/**
371 * e1000_put_hw_semaphore_82571 - Release hardware semaphore
372 * @hw: pointer to the HW structure
373 *
374 * Release hardware semaphore used to access the PHY or NVM
375 **/
376static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)
377{
378 u32 swsm;
379
380 swsm = er32(SWSM);
381
382 swsm &= ~E1000_SWSM_SWESMBI;
383
384 ew32(SWSM, swsm);
385}
386
387/**
388 * e1000_acquire_nvm_82571 - Request for access to the EEPROM
389 * @hw: pointer to the HW structure
390 *
391 * To gain access to the EEPROM, first we must obtain a hardware semaphore.
392 * Then for non-82573 hardware, set the EEPROM access request bit and wait
393 * for EEPROM access grant bit. If the access grant bit is not set, release
394 * hardware semaphore.
395 **/
396static s32 e1000_acquire_nvm_82571(struct e1000_hw *hw)
397{
398 s32 ret_val;
399
400 ret_val = e1000_get_hw_semaphore_82571(hw);
401 if (ret_val)
402 return ret_val;
403
404 if (hw->mac.type != e1000_82573)
405 ret_val = e1000e_acquire_nvm(hw);
406
407 if (ret_val)
408 e1000_put_hw_semaphore_82571(hw);
409
410 return ret_val;
411}
412
413/**
414 * e1000_release_nvm_82571 - Release exclusive access to EEPROM
415 * @hw: pointer to the HW structure
416 *
417 * Stop any current commands to the EEPROM and clear the EEPROM request bit.
418 **/
419static void e1000_release_nvm_82571(struct e1000_hw *hw)
420{
421 e1000e_release_nvm(hw);
422 e1000_put_hw_semaphore_82571(hw);
423}
424
425/**
426 * e1000_write_nvm_82571 - Write to EEPROM using appropriate interface
427 * @hw: pointer to the HW structure
428 * @offset: offset within the EEPROM to be written to
429 * @words: number of words to write
430 * @data: 16 bit word(s) to be written to the EEPROM
431 *
432 * For non-82573 silicon, write data to EEPROM at offset using SPI interface.
433 *
434 * If e1000e_update_nvm_checksum is not called after this function, the
435 * EEPROM will most likley contain an invalid checksum.
436 **/
437static s32 e1000_write_nvm_82571(struct e1000_hw *hw, u16 offset, u16 words,
438 u16 *data)
439{
440 s32 ret_val;
441
442 switch (hw->mac.type) {
443 case e1000_82573:
444 ret_val = e1000_write_nvm_eewr_82571(hw, offset, words, data);
445 break;
446 case e1000_82571:
447 case e1000_82572:
448 ret_val = e1000e_write_nvm_spi(hw, offset, words, data);
449 break;
450 default:
451 ret_val = -E1000_ERR_NVM;
452 break;
453 }
454
455 return ret_val;
456}
457
458/**
459 * e1000_update_nvm_checksum_82571 - Update EEPROM checksum
460 * @hw: pointer to the HW structure
461 *
462 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
463 * up to the checksum. Then calculates the EEPROM checksum and writes the
464 * value to the EEPROM.
465 **/
466static s32 e1000_update_nvm_checksum_82571(struct e1000_hw *hw)
467{
468 u32 eecd;
469 s32 ret_val;
470 u16 i;
471
472 ret_val = e1000e_update_nvm_checksum_generic(hw);
473 if (ret_val)
474 return ret_val;
475
476 /* If our nvm is an EEPROM, then we're done
477 * otherwise, commit the checksum to the flash NVM. */
478 if (hw->nvm.type != e1000_nvm_flash_hw)
479 return ret_val;
480
481 /* Check for pending operations. */
482 for (i = 0; i < E1000_FLASH_UPDATES; i++) {
483 msleep(1);
484 if ((er32(EECD) & E1000_EECD_FLUPD) == 0)
485 break;
486 }
487
488 if (i == E1000_FLASH_UPDATES)
489 return -E1000_ERR_NVM;
490
491 /* Reset the firmware if using STM opcode. */
492 if ((er32(FLOP) & 0xFF00) == E1000_STM_OPCODE) {
493 /* The enabling of and the actual reset must be done
494 * in two write cycles.
495 */
496 ew32(HICR, E1000_HICR_FW_RESET_ENABLE);
497 e1e_flush();
498 ew32(HICR, E1000_HICR_FW_RESET);
499 }
500
501 /* Commit the write to flash */
502 eecd = er32(EECD) | E1000_EECD_FLUPD;
503 ew32(EECD, eecd);
504
505 for (i = 0; i < E1000_FLASH_UPDATES; i++) {
506 msleep(1);
507 if ((er32(EECD) & E1000_EECD_FLUPD) == 0)
508 break;
509 }
510
511 if (i == E1000_FLASH_UPDATES)
512 return -E1000_ERR_NVM;
513
514 return 0;
515}
516
517/**
518 * e1000_validate_nvm_checksum_82571 - Validate EEPROM checksum
519 * @hw: pointer to the HW structure
520 *
521 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM
522 * and then verifies that the sum of the EEPROM is equal to 0xBABA.
523 **/
524static s32 e1000_validate_nvm_checksum_82571(struct e1000_hw *hw)
525{
526 if (hw->nvm.type == e1000_nvm_flash_hw)
527 e1000_fix_nvm_checksum_82571(hw);
528
529 return e1000e_validate_nvm_checksum_generic(hw);
530}
531
532/**
533 * e1000_write_nvm_eewr_82571 - Write to EEPROM for 82573 silicon
534 * @hw: pointer to the HW structure
535 * @offset: offset within the EEPROM to be written to
536 * @words: number of words to write
537 * @data: 16 bit word(s) to be written to the EEPROM
538 *
539 * After checking for invalid values, poll the EEPROM to ensure the previous
540 * command has completed before trying to write the next word. After write
541 * poll for completion.
542 *
543 * If e1000e_update_nvm_checksum is not called after this function, the
544 * EEPROM will most likley contain an invalid checksum.
545 **/
546static s32 e1000_write_nvm_eewr_82571(struct e1000_hw *hw, u16 offset,
547 u16 words, u16 *data)
548{
549 struct e1000_nvm_info *nvm = &hw->nvm;
550 u32 i;
551 u32 eewr = 0;
552 s32 ret_val = 0;
553
554 /* A check for invalid values: offset too large, too many words,
555 * and not enough words. */
556 if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
557 (words == 0)) {
558 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
559 return -E1000_ERR_NVM;
560 }
561
562 for (i = 0; i < words; i++) {
563 eewr = (data[i] << E1000_NVM_RW_REG_DATA) |
564 ((offset+i) << E1000_NVM_RW_ADDR_SHIFT) |
565 E1000_NVM_RW_REG_START;
566
567 ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
568 if (ret_val)
569 break;
570
571 ew32(EEWR, eewr);
572
573 ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_WRITE);
574 if (ret_val)
575 break;
576 }
577
578 return ret_val;
579}
580
581/**
582 * e1000_get_cfg_done_82571 - Poll for configuration done
583 * @hw: pointer to the HW structure
584 *
585 * Reads the management control register for the config done bit to be set.
586 **/
587static s32 e1000_get_cfg_done_82571(struct e1000_hw *hw)
588{
589 s32 timeout = PHY_CFG_TIMEOUT;
590
591 while (timeout) {
592 if (er32(EEMNGCTL) &
593 E1000_NVM_CFG_DONE_PORT_0)
594 break;
595 msleep(1);
596 timeout--;
597 }
598 if (!timeout) {
599 hw_dbg(hw, "MNG configuration cycle has not completed.\n");
600 return -E1000_ERR_RESET;
601 }
602
603 return 0;
604}
605
606/**
607 * e1000_set_d0_lplu_state_82571 - Set Low Power Linkup D0 state
608 * @hw: pointer to the HW structure
609 * @active: TRUE to enable LPLU, FALSE to disable
610 *
611 * Sets the LPLU D0 state according to the active flag. When activating LPLU
612 * this function also disables smart speed and vice versa. LPLU will not be
613 * activated unless the device autonegotiation advertisement meets standards
614 * of either 10 or 10/100 or 10/100/1000 at all duplexes. This is a function
615 * pointer entry point only called by PHY setup routines.
616 **/
617static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active)
618{
619 struct e1000_phy_info *phy = &hw->phy;
620 s32 ret_val;
621 u16 data;
622
623 ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
624 if (ret_val)
625 return ret_val;
626
627 if (active) {
628 data |= IGP02E1000_PM_D0_LPLU;
629 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
630 if (ret_val)
631 return ret_val;
632
633 /* When LPLU is enabled, we should disable SmartSpeed */
634 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
635 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
636 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
637 if (ret_val)
638 return ret_val;
639 } else {
640 data &= ~IGP02E1000_PM_D0_LPLU;
641 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
642 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
643 * during Dx states where the power conservation is most
644 * important. During driver activity we should enable
645 * SmartSpeed, so performance is maintained. */
646 if (phy->smart_speed == e1000_smart_speed_on) {
647 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
648 &data);
649 if (ret_val)
650 return ret_val;
651
652 data |= IGP01E1000_PSCFR_SMART_SPEED;
653 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
654 data);
655 if (ret_val)
656 return ret_val;
657 } else if (phy->smart_speed == e1000_smart_speed_off) {
658 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
659 &data);
660 if (ret_val)
661 return ret_val;
662
663 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
664 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
665 data);
666 if (ret_val)
667 return ret_val;
668 }
669 }
670
671 return 0;
672}
673
674/**
675 * e1000_reset_hw_82571 - Reset hardware
676 * @hw: pointer to the HW structure
677 *
678 * This resets the hardware into a known state. This is a
679 * function pointer entry point called by the api module.
680 **/
681static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
682{
683 u32 ctrl;
684 u32 extcnf_ctrl;
685 u32 ctrl_ext;
686 u32 icr;
687 s32 ret_val;
688 u16 i = 0;
689
690 /* Prevent the PCI-E bus from sticking if there is no TLP connection
691 * on the last TLP read/write transaction when MAC is reset.
692 */
693 ret_val = e1000e_disable_pcie_master(hw);
694 if (ret_val)
695 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
696
697 hw_dbg(hw, "Masking off all interrupts\n");
698 ew32(IMC, 0xffffffff);
699
700 ew32(RCTL, 0);
701 ew32(TCTL, E1000_TCTL_PSP);
702 e1e_flush();
703
704 msleep(10);
705
706 /* Must acquire the MDIO ownership before MAC reset.
707 * Ownership defaults to firmware after a reset. */
708 if (hw->mac.type == e1000_82573) {
709 extcnf_ctrl = er32(EXTCNF_CTRL);
710 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
711
712 do {
713 ew32(EXTCNF_CTRL, extcnf_ctrl);
714 extcnf_ctrl = er32(EXTCNF_CTRL);
715
716 if (extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP)
717 break;
718
719 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
720
721 msleep(2);
722 i++;
723 } while (i < MDIO_OWNERSHIP_TIMEOUT);
724 }
725
726 ctrl = er32(CTRL);
727
728 hw_dbg(hw, "Issuing a global reset to MAC\n");
729 ew32(CTRL, ctrl | E1000_CTRL_RST);
730
731 if (hw->nvm.type == e1000_nvm_flash_hw) {
732 udelay(10);
733 ctrl_ext = er32(CTRL_EXT);
734 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
735 ew32(CTRL_EXT, ctrl_ext);
736 e1e_flush();
737 }
738
739 ret_val = e1000e_get_auto_rd_done(hw);
740 if (ret_val)
741 /* We don't want to continue accessing MAC registers. */
742 return ret_val;
743
744 /* Phy configuration from NVM just starts after EECD_AUTO_RD is set.
745 * Need to wait for Phy configuration completion before accessing
746 * NVM and Phy.
747 */
748 if (hw->mac.type == e1000_82573)
749 msleep(25);
750
751 /* Clear any pending interrupt events. */
752 ew32(IMC, 0xffffffff);
753 icr = er32(ICR);
754
755 return 0;
756}
757
758/**
759 * e1000_init_hw_82571 - Initialize hardware
760 * @hw: pointer to the HW structure
761 *
762 * This inits the hardware readying it for operation.
763 **/
764static s32 e1000_init_hw_82571(struct e1000_hw *hw)
765{
766 struct e1000_mac_info *mac = &hw->mac;
767 u32 reg_data;
768 s32 ret_val;
769 u16 i;
770 u16 rar_count = mac->rar_entry_count;
771
772 e1000_initialize_hw_bits_82571(hw);
773
774 /* Initialize identification LED */
775 ret_val = e1000e_id_led_init(hw);
776 if (ret_val) {
777 hw_dbg(hw, "Error initializing identification LED\n");
778 return ret_val;
779 }
780
781 /* Disabling VLAN filtering */
782 hw_dbg(hw, "Initializing the IEEE VLAN\n");
783 e1000e_clear_vfta(hw);
784
785 /* Setup the receive address. */
786 /* If, however, a locally administered address was assigned to the
787 * 82571, we must reserve a RAR for it to work around an issue where
788 * resetting one port will reload the MAC on the other port.
789 */
790 if (e1000e_get_laa_state_82571(hw))
791 rar_count--;
792 e1000e_init_rx_addrs(hw, rar_count);
793
794 /* Zero out the Multicast HASH table */
795 hw_dbg(hw, "Zeroing the MTA\n");
796 for (i = 0; i < mac->mta_reg_count; i++)
797 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
798
799 /* Setup link and flow control */
800 ret_val = e1000_setup_link_82571(hw);
801
802 /* Set the transmit descriptor write-back policy */
803 reg_data = er32(TXDCTL);
804 reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |
805 E1000_TXDCTL_FULL_TX_DESC_WB |
806 E1000_TXDCTL_COUNT_DESC;
807 ew32(TXDCTL, reg_data);
808
809 /* ...for both queues. */
810 if (mac->type != e1000_82573) {
811 reg_data = er32(TXDCTL1);
812 reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |
813 E1000_TXDCTL_FULL_TX_DESC_WB |
814 E1000_TXDCTL_COUNT_DESC;
815 ew32(TXDCTL1, reg_data);
816 } else {
817 e1000e_enable_tx_pkt_filtering(hw);
818 reg_data = er32(GCR);
819 reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
820 ew32(GCR, reg_data);
821 }
822
823 /* Clear all of the statistics registers (clear on read). It is
824 * important that we do this after we have tried to establish link
825 * because the symbol error count will increment wildly if there
826 * is no link.
827 */
828 e1000_clear_hw_cntrs_82571(hw);
829
830 return ret_val;
831}
832
833/**
834 * e1000_initialize_hw_bits_82571 - Initialize hardware-dependent bits
835 * @hw: pointer to the HW structure
836 *
837 * Initializes required hardware-dependent bits needed for normal operation.
838 **/
839static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw)
840{
841 u32 reg;
842
843 /* Transmit Descriptor Control 0 */
844 reg = er32(TXDCTL);
845 reg |= (1 << 22);
846 ew32(TXDCTL, reg);
847
848 /* Transmit Descriptor Control 1 */
849 reg = er32(TXDCTL1);
850 reg |= (1 << 22);
851 ew32(TXDCTL1, reg);
852
853 /* Transmit Arbitration Control 0 */
854 reg = er32(TARC0);
855 reg &= ~(0xF << 27); /* 30:27 */
856 switch (hw->mac.type) {
857 case e1000_82571:
858 case e1000_82572:
859 reg |= (1 << 23) | (1 << 24) | (1 << 25) | (1 << 26);
860 break;
861 default:
862 break;
863 }
864 ew32(TARC0, reg);
865
866 /* Transmit Arbitration Control 1 */
867 reg = er32(TARC1);
868 switch (hw->mac.type) {
869 case e1000_82571:
870 case e1000_82572:
871 reg &= ~((1 << 29) | (1 << 30));
872 reg |= (1 << 22) | (1 << 24) | (1 << 25) | (1 << 26);
873 if (er32(TCTL) & E1000_TCTL_MULR)
874 reg &= ~(1 << 28);
875 else
876 reg |= (1 << 28);
877 ew32(TARC1, reg);
878 break;
879 default:
880 break;
881 }
882
883 /* Device Control */
884 if (hw->mac.type == e1000_82573) {
885 reg = er32(CTRL);
886 reg &= ~(1 << 29);
887 ew32(CTRL, reg);
888 }
889
890 /* Extended Device Control */
891 if (hw->mac.type == e1000_82573) {
892 reg = er32(CTRL_EXT);
893 reg &= ~(1 << 23);
894 reg |= (1 << 22);
895 ew32(CTRL_EXT, reg);
896 }
897}
898
899/**
900 * e1000e_clear_vfta - Clear VLAN filter table
901 * @hw: pointer to the HW structure
902 *
903 * Clears the register array which contains the VLAN filter table by
904 * setting all the values to 0.
905 **/
906void e1000e_clear_vfta(struct e1000_hw *hw)
907{
908 u32 offset;
909 u32 vfta_value = 0;
910 u32 vfta_offset = 0;
911 u32 vfta_bit_in_reg = 0;
912
913 if (hw->mac.type == e1000_82573) {
914 if (hw->mng_cookie.vlan_id != 0) {
915 /* The VFTA is a 4096b bit-field, each identifying
916 * a single VLAN ID. The following operations
917 * determine which 32b entry (i.e. offset) into the
918 * array we want to set the VLAN ID (i.e. bit) of
919 * the manageability unit.
920 */
921 vfta_offset = (hw->mng_cookie.vlan_id >>
922 E1000_VFTA_ENTRY_SHIFT) &
923 E1000_VFTA_ENTRY_MASK;
924 vfta_bit_in_reg = 1 << (hw->mng_cookie.vlan_id &
925 E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
926 }
927 }
928 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
929 /* If the offset we want to clear is the same offset of the
930 * manageability VLAN ID, then clear all bits except that of
931 * the manageability unit.
932 */
933 vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
934 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, vfta_value);
935 e1e_flush();
936 }
937}
938
939/**
940 * e1000_mc_addr_list_update_82571 - Update Multicast addresses
941 * @hw: pointer to the HW structure
942 * @mc_addr_list: array of multicast addresses to program
943 * @mc_addr_count: number of multicast addresses to program
944 * @rar_used_count: the first RAR register free to program
945 * @rar_count: total number of supported Receive Address Registers
946 *
947 * Updates the Receive Address Registers and Multicast Table Array.
948 * The caller must have a packed mc_addr_list of multicast addresses.
949 * The parameter rar_count will usually be hw->mac.rar_entry_count
950 * unless there are workarounds that change this.
951 **/
952static void e1000_mc_addr_list_update_82571(struct e1000_hw *hw,
953 u8 *mc_addr_list,
954 u32 mc_addr_count,
955 u32 rar_used_count,
956 u32 rar_count)
957{
958 if (e1000e_get_laa_state_82571(hw))
959 rar_count--;
960
961 e1000e_mc_addr_list_update_generic(hw, mc_addr_list, mc_addr_count,
962 rar_used_count, rar_count);
963}
964
965/**
966 * e1000_setup_link_82571 - Setup flow control and link settings
967 * @hw: pointer to the HW structure
968 *
969 * Determines which flow control settings to use, then configures flow
970 * control. Calls the appropriate media-specific link configuration
971 * function. Assuming the adapter has a valid link partner, a valid link
972 * should be established. Assumes the hardware has previously been reset
973 * and the transmitter and receiver are not enabled.
974 **/
975static s32 e1000_setup_link_82571(struct e1000_hw *hw)
976{
977 /* 82573 does not have a word in the NVM to determine
978 * the default flow control setting, so we explicitly
979 * set it to full.
980 */
981 if (hw->mac.type == e1000_82573)
982 hw->mac.fc = e1000_fc_full;
983
984 return e1000e_setup_link(hw);
985}
986
987/**
988 * e1000_setup_copper_link_82571 - Configure copper link settings
989 * @hw: pointer to the HW structure
990 *
991 * Configures the link for auto-neg or forced speed and duplex. Then we check
992 * for link, once link is established calls to configure collision distance
993 * and flow control are called.
994 **/
995static s32 e1000_setup_copper_link_82571(struct e1000_hw *hw)
996{
997 u32 ctrl;
998 u32 led_ctrl;
999 s32 ret_val;
1000
1001 ctrl = er32(CTRL);
1002 ctrl |= E1000_CTRL_SLU;
1003 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1004 ew32(CTRL, ctrl);
1005
1006 switch (hw->phy.type) {
1007 case e1000_phy_m88:
1008 ret_val = e1000e_copper_link_setup_m88(hw);
1009 break;
1010 case e1000_phy_igp_2:
1011 ret_val = e1000e_copper_link_setup_igp(hw);
1012 /* Setup activity LED */
1013 led_ctrl = er32(LEDCTL);
1014 led_ctrl &= IGP_ACTIVITY_LED_MASK;
1015 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
1016 ew32(LEDCTL, led_ctrl);
1017 break;
1018 default:
1019 return -E1000_ERR_PHY;
1020 break;
1021 }
1022
1023 if (ret_val)
1024 return ret_val;
1025
1026 ret_val = e1000e_setup_copper_link(hw);
1027
1028 return ret_val;
1029}
1030
1031/**
1032 * e1000_setup_fiber_serdes_link_82571 - Setup link for fiber/serdes
1033 * @hw: pointer to the HW structure
1034 *
1035 * Configures collision distance and flow control for fiber and serdes links.
1036 * Upon successful setup, poll for link.
1037 **/
1038static s32 e1000_setup_fiber_serdes_link_82571(struct e1000_hw *hw)
1039{
1040 switch (hw->mac.type) {
1041 case e1000_82571:
1042 case e1000_82572:
1043 /* If SerDes loopback mode is entered, there is no form
1044 * of reset to take the adapter out of that mode. So we
1045 * have to explicitly take the adapter out of loopback
1046 * mode. This prevents drivers from twidling their thumbs
1047 * if another tool failed to take it out of loopback mode.
1048 */
1049 ew32(SCTL,
1050 E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1051 break;
1052 default:
1053 break;
1054 }
1055
1056 return e1000e_setup_fiber_serdes_link(hw);
1057}
1058
1059/**
1060 * e1000_valid_led_default_82571 - Verify a valid default LED config
1061 * @hw: pointer to the HW structure
1062 * @data: pointer to the NVM (EEPROM)
1063 *
1064 * Read the EEPROM for the current default LED configuration. If the
1065 * LED configuration is not valid, set to a valid LED configuration.
1066 **/
1067static s32 e1000_valid_led_default_82571(struct e1000_hw *hw, u16 *data)
1068{
1069 s32 ret_val;
1070
1071 ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
1072 if (ret_val) {
1073 hw_dbg(hw, "NVM Read Error\n");
1074 return ret_val;
1075 }
1076
1077 if (hw->mac.type == e1000_82573 &&
1078 *data == ID_LED_RESERVED_F746)
1079 *data = ID_LED_DEFAULT_82573;
1080 else if (*data == ID_LED_RESERVED_0000 ||
1081 *data == ID_LED_RESERVED_FFFF)
1082 *data = ID_LED_DEFAULT;
1083
1084 return 0;
1085}
1086
1087/**
1088 * e1000e_get_laa_state_82571 - Get locally administered address state
1089 * @hw: pointer to the HW structure
1090 *
1091 * Retrieve and return the current locally administed address state.
1092 **/
1093bool e1000e_get_laa_state_82571(struct e1000_hw *hw)
1094{
1095 if (hw->mac.type != e1000_82571)
1096 return 0;
1097
1098 return hw->dev_spec.e82571.laa_is_present;
1099}
1100
1101/**
1102 * e1000e_set_laa_state_82571 - Set locally administered address state
1103 * @hw: pointer to the HW structure
1104 * @state: enable/disable locally administered address
1105 *
1106 * Enable/Disable the current locally administed address state.
1107 **/
1108void e1000e_set_laa_state_82571(struct e1000_hw *hw, bool state)
1109{
1110 if (hw->mac.type != e1000_82571)
1111 return;
1112
1113 hw->dev_spec.e82571.laa_is_present = state;
1114
1115 /* If workaround is activated... */
1116 if (state)
1117 /* Hold a copy of the LAA in RAR[14] This is done so that
1118 * between the time RAR[0] gets clobbered and the time it
1119 * gets fixed, the actual LAA is in one of the RARs and no
1120 * incoming packets directed to this port are dropped.
1121 * Eventually the LAA will be in RAR[0] and RAR[14].
1122 */
1123 e1000e_rar_set(hw, hw->mac.addr, hw->mac.rar_entry_count - 1);
1124}
1125
1126/**
1127 * e1000_fix_nvm_checksum_82571 - Fix EEPROM checksum
1128 * @hw: pointer to the HW structure
1129 *
1130 * Verifies that the EEPROM has completed the update. After updating the
1131 * EEPROM, we need to check bit 15 in work 0x23 for the checksum fix. If
1132 * the checksum fix is not implemented, we need to set the bit and update
1133 * the checksum. Otherwise, if bit 15 is set and the checksum is incorrect,
1134 * we need to return bad checksum.
1135 **/
1136static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
1137{
1138 struct e1000_nvm_info *nvm = &hw->nvm;
1139 s32 ret_val;
1140 u16 data;
1141
1142 if (nvm->type != e1000_nvm_flash_hw)
1143 return 0;
1144
1145 /* Check bit 4 of word 10h. If it is 0, firmware is done updating
1146 * 10h-12h. Checksum may need to be fixed.
1147 */
1148 ret_val = e1000_read_nvm(hw, 0x10, 1, &data);
1149 if (ret_val)
1150 return ret_val;
1151
1152 if (!(data & 0x10)) {
1153 /* Read 0x23 and check bit 15. This bit is a 1
1154 * when the checksum has already been fixed. If
1155 * the checksum is still wrong and this bit is a
1156 * 1, we need to return bad checksum. Otherwise,
1157 * we need to set this bit to a 1 and update the
1158 * checksum.
1159 */
1160 ret_val = e1000_read_nvm(hw, 0x23, 1, &data);
1161 if (ret_val)
1162 return ret_val;
1163
1164 if (!(data & 0x8000)) {
1165 data |= 0x8000;
1166 ret_val = e1000_write_nvm(hw, 0x23, 1, &data);
1167 if (ret_val)
1168 return ret_val;
1169 ret_val = e1000e_update_nvm_checksum(hw);
1170 }
1171 }
1172
1173 return 0;
1174}
1175
1176/**
1177 * e1000_clear_hw_cntrs_82571 - Clear device specific hardware counters
1178 * @hw: pointer to the HW structure
1179 *
1180 * Clears the hardware counters by reading the counter registers.
1181 **/
1182static void e1000_clear_hw_cntrs_82571(struct e1000_hw *hw)
1183{
1184 u32 temp;
1185
1186 e1000e_clear_hw_cntrs_base(hw);
1187
1188 temp = er32(PRC64);
1189 temp = er32(PRC127);
1190 temp = er32(PRC255);
1191 temp = er32(PRC511);
1192 temp = er32(PRC1023);
1193 temp = er32(PRC1522);
1194 temp = er32(PTC64);
1195 temp = er32(PTC127);
1196 temp = er32(PTC255);
1197 temp = er32(PTC511);
1198 temp = er32(PTC1023);
1199 temp = er32(PTC1522);
1200
1201 temp = er32(ALGNERRC);
1202 temp = er32(RXERRC);
1203 temp = er32(TNCRS);
1204 temp = er32(CEXTERR);
1205 temp = er32(TSCTC);
1206 temp = er32(TSCTFC);
1207
1208 temp = er32(MGTPRC);
1209 temp = er32(MGTPDC);
1210 temp = er32(MGTPTC);
1211
1212 temp = er32(IAC);
1213 temp = er32(ICRXOC);
1214
1215 temp = er32(ICRXPTC);
1216 temp = er32(ICRXATC);
1217 temp = er32(ICTXPTC);
1218 temp = er32(ICTXATC);
1219 temp = er32(ICTXQEC);
1220 temp = er32(ICTXQMTC);
1221 temp = er32(ICRXDMTC);
1222}
1223
1224static struct e1000_mac_operations e82571_mac_ops = {
1225 .mng_mode_enab = E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT,
1226 /* .check_for_link: media type dependent */
1227 .cleanup_led = e1000e_cleanup_led_generic,
1228 .clear_hw_cntrs = e1000_clear_hw_cntrs_82571,
1229 .get_bus_info = e1000e_get_bus_info_pcie,
1230 /* .get_link_up_info: media type dependent */
1231 .led_on = e1000e_led_on_generic,
1232 .led_off = e1000e_led_off_generic,
1233 .mc_addr_list_update = e1000_mc_addr_list_update_82571,
1234 .reset_hw = e1000_reset_hw_82571,
1235 .init_hw = e1000_init_hw_82571,
1236 .setup_link = e1000_setup_link_82571,
1237 /* .setup_physical_interface: media type dependent */
1238};
1239
1240static struct e1000_phy_operations e82_phy_ops_igp = {
1241 .acquire_phy = e1000_get_hw_semaphore_82571,
1242 .check_reset_block = e1000e_check_reset_block_generic,
1243 .commit_phy = NULL,
1244 .force_speed_duplex = e1000e_phy_force_speed_duplex_igp,
1245 .get_cfg_done = e1000_get_cfg_done_82571,
1246 .get_cable_length = e1000e_get_cable_length_igp_2,
1247 .get_phy_info = e1000e_get_phy_info_igp,
1248 .read_phy_reg = e1000e_read_phy_reg_igp,
1249 .release_phy = e1000_put_hw_semaphore_82571,
1250 .reset_phy = e1000e_phy_hw_reset_generic,
1251 .set_d0_lplu_state = e1000_set_d0_lplu_state_82571,
1252 .set_d3_lplu_state = e1000e_set_d3_lplu_state,
1253 .write_phy_reg = e1000e_write_phy_reg_igp,
1254};
1255
1256static struct e1000_phy_operations e82_phy_ops_m88 = {
1257 .acquire_phy = e1000_get_hw_semaphore_82571,
1258 .check_reset_block = e1000e_check_reset_block_generic,
1259 .commit_phy = e1000e_phy_sw_reset,
1260 .force_speed_duplex = e1000e_phy_force_speed_duplex_m88,
1261 .get_cfg_done = e1000e_get_cfg_done,
1262 .get_cable_length = e1000e_get_cable_length_m88,
1263 .get_phy_info = e1000e_get_phy_info_m88,
1264 .read_phy_reg = e1000e_read_phy_reg_m88,
1265 .release_phy = e1000_put_hw_semaphore_82571,
1266 .reset_phy = e1000e_phy_hw_reset_generic,
1267 .set_d0_lplu_state = e1000_set_d0_lplu_state_82571,
1268 .set_d3_lplu_state = e1000e_set_d3_lplu_state,
1269 .write_phy_reg = e1000e_write_phy_reg_m88,
1270};
1271
1272static struct e1000_nvm_operations e82571_nvm_ops = {
1273 .acquire_nvm = e1000_acquire_nvm_82571,
1274 .read_nvm = e1000e_read_nvm_spi,
1275 .release_nvm = e1000_release_nvm_82571,
1276 .update_nvm = e1000_update_nvm_checksum_82571,
1277 .valid_led_default = e1000_valid_led_default_82571,
1278 .validate_nvm = e1000_validate_nvm_checksum_82571,
1279 .write_nvm = e1000_write_nvm_82571,
1280};
1281
1282static struct e1000_nvm_operations e82573_nvm_ops = {
1283 .acquire_nvm = e1000_acquire_nvm_82571,
1284 .read_nvm = e1000e_read_nvm_eerd,
1285 .release_nvm = e1000_release_nvm_82571,
1286 .update_nvm = e1000_update_nvm_checksum_82571,
1287 .valid_led_default = e1000_valid_led_default_82571,
1288 .validate_nvm = e1000_validate_nvm_checksum_82571,
1289 .write_nvm = e1000_write_nvm_82571,
1290};
1291
1292struct e1000_info e1000_82571_info = {
1293 .mac = e1000_82571,
1294 .flags = FLAG_HAS_HW_VLAN_FILTER
1295 | FLAG_HAS_JUMBO_FRAMES
1296 | FLAG_HAS_STATS_PTC_PRC
1297 | FLAG_HAS_WOL
1298 | FLAG_APME_IN_CTRL3
1299 | FLAG_RX_CSUM_ENABLED
1300 | FLAG_HAS_CTRLEXT_ON_LOAD
1301 | FLAG_HAS_STATS_ICR_ICT
1302 | FLAG_HAS_SMART_POWER_DOWN
1303 | FLAG_RESET_OVERWRITES_LAA /* errata */
1304 | FLAG_TARC_SPEED_MODE_BIT /* errata */
1305 | FLAG_APME_CHECK_PORT_B,
1306 .pba = 38,
1307 .get_invariants = e1000_get_invariants_82571,
1308 .mac_ops = &e82571_mac_ops,
1309 .phy_ops = &e82_phy_ops_igp,
1310 .nvm_ops = &e82571_nvm_ops,
1311};
1312
1313struct e1000_info e1000_82572_info = {
1314 .mac = e1000_82572,
1315 .flags = FLAG_HAS_HW_VLAN_FILTER
1316 | FLAG_HAS_JUMBO_FRAMES
1317 | FLAG_HAS_STATS_PTC_PRC
1318 | FLAG_HAS_WOL
1319 | FLAG_APME_IN_CTRL3
1320 | FLAG_RX_CSUM_ENABLED
1321 | FLAG_HAS_CTRLEXT_ON_LOAD
1322 | FLAG_HAS_STATS_ICR_ICT
1323 | FLAG_TARC_SPEED_MODE_BIT, /* errata */
1324 .pba = 38,
1325 .get_invariants = e1000_get_invariants_82571,
1326 .mac_ops = &e82571_mac_ops,
1327 .phy_ops = &e82_phy_ops_igp,
1328 .nvm_ops = &e82571_nvm_ops,
1329};
1330
1331struct e1000_info e1000_82573_info = {
1332 .mac = e1000_82573,
1333 .flags = FLAG_HAS_HW_VLAN_FILTER
1334 | FLAG_HAS_JUMBO_FRAMES
1335 | FLAG_HAS_STATS_PTC_PRC
1336 | FLAG_HAS_WOL
1337 | FLAG_APME_IN_CTRL3
1338 | FLAG_RX_CSUM_ENABLED
1339 | FLAG_HAS_STATS_ICR_ICT
1340 | FLAG_HAS_SMART_POWER_DOWN
1341 | FLAG_HAS_AMT
1342 | FLAG_HAS_ASPM
1343 | FLAG_HAS_ERT
1344 | FLAG_HAS_SWSM_ON_LOAD,
1345 .pba = 20,
1346 .get_invariants = e1000_get_invariants_82571,
1347 .mac_ops = &e82571_mac_ops,
1348 .phy_ops = &e82_phy_ops_m88,
1349 .nvm_ops = &e82573_nvm_ops,
1350};
1351
diff --git a/drivers/net/e1000e/Makefile b/drivers/net/e1000e/Makefile
new file mode 100644
index 000000000000..650f866e7ac2
--- /dev/null
+++ b/drivers/net/e1000e/Makefile
@@ -0,0 +1,37 @@
1################################################################################
2#
3# Intel PRO/1000 Linux driver
4# Copyright(c) 1999 - 2007 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# Makefile for the Intel(R) PRO/1000 ethernet driver
31#
32
33obj-$(CONFIG_E1000E) += e1000e.o
34
35e1000e-objs := 82571.o ich8lan.o es2lan.o \
36 lib.o phy.o param.o ethtool.o netdev.o
37
diff --git a/drivers/net/e1000e/defines.h b/drivers/net/e1000e/defines.h
new file mode 100644
index 000000000000..b32ed45b4b34
--- /dev/null
+++ b/drivers/net/e1000e/defines.h
@@ -0,0 +1,739 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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#ifndef _E1000_DEFINES_H_
30#define _E1000_DEFINES_H_
31
32#define E1000_TXD_POPTS_IXSM 0x01 /* Insert IP checksum */
33#define E1000_TXD_POPTS_TXSM 0x02 /* Insert TCP/UDP checksum */
34#define E1000_TXD_CMD_EOP 0x01000000 /* End of Packet */
35#define E1000_TXD_CMD_IFCS 0x02000000 /* Insert FCS (Ethernet CRC) */
36#define E1000_TXD_CMD_IC 0x04000000 /* Insert Checksum */
37#define E1000_TXD_CMD_RS 0x08000000 /* Report Status */
38#define E1000_TXD_CMD_RPS 0x10000000 /* Report Packet Sent */
39#define E1000_TXD_CMD_DEXT 0x20000000 /* Descriptor extension (0 = legacy) */
40#define E1000_TXD_CMD_VLE 0x40000000 /* Add VLAN tag */
41#define E1000_TXD_CMD_IDE 0x80000000 /* Enable Tidv register */
42#define E1000_TXD_STAT_DD 0x00000001 /* Descriptor Done */
43#define E1000_TXD_STAT_EC 0x00000002 /* Excess Collisions */
44#define E1000_TXD_STAT_LC 0x00000004 /* Late Collisions */
45#define E1000_TXD_STAT_TU 0x00000008 /* Transmit underrun */
46#define E1000_TXD_CMD_TCP 0x01000000 /* TCP packet */
47#define E1000_TXD_CMD_IP 0x02000000 /* IP packet */
48#define E1000_TXD_CMD_TSE 0x04000000 /* TCP Seg enable */
49#define E1000_TXD_STAT_TC 0x00000004 /* Tx Underrun */
50
51/* Number of Transmit and Receive Descriptors must be a multiple of 8 */
52#define REQ_TX_DESCRIPTOR_MULTIPLE 8
53#define REQ_RX_DESCRIPTOR_MULTIPLE 8
54
55/* Definitions for power management and wakeup registers */
56/* Wake Up Control */
57#define E1000_WUC_APME 0x00000001 /* APM Enable */
58#define E1000_WUC_PME_EN 0x00000002 /* PME Enable */
59
60/* Wake Up Filter Control */
61#define E1000_WUFC_LNKC 0x00000001 /* Link Status Change Wakeup Enable */
62#define E1000_WUFC_MAG 0x00000002 /* Magic Packet Wakeup Enable */
63#define E1000_WUFC_EX 0x00000004 /* Directed Exact Wakeup Enable */
64#define E1000_WUFC_MC 0x00000008 /* Directed Multicast Wakeup Enable */
65#define E1000_WUFC_BC 0x00000010 /* Broadcast Wakeup Enable */
66
67/* Extended Device Control */
68#define E1000_CTRL_EXT_SDP7_DATA 0x00000080 /* Value of SW Defineable Pin 7 */
69#define E1000_CTRL_EXT_EE_RST 0x00002000 /* Reinitialize from EEPROM */
70#define E1000_CTRL_EXT_RO_DIS 0x00020000 /* Relaxed Ordering disable */
71#define E1000_CTRL_EXT_LINK_MODE_MASK 0x00C00000
72#define E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES 0x00C00000
73#define E1000_CTRL_EXT_DRV_LOAD 0x10000000 /* Driver loaded bit for FW */
74#define E1000_CTRL_EXT_IAME 0x08000000 /* Interrupt acknowledge Auto-mask */
75#define E1000_CTRL_EXT_INT_TIMER_CLR 0x20000000 /* Clear Interrupt timers after IMS clear */
76
77/* Receive Decriptor bit definitions */
78#define E1000_RXD_STAT_DD 0x01 /* Descriptor Done */
79#define E1000_RXD_STAT_EOP 0x02 /* End of Packet */
80#define E1000_RXD_STAT_IXSM 0x04 /* Ignore checksum */
81#define E1000_RXD_STAT_VP 0x08 /* IEEE VLAN Packet */
82#define E1000_RXD_STAT_UDPCS 0x10 /* UDP xsum caculated */
83#define E1000_RXD_STAT_TCPCS 0x20 /* TCP xsum calculated */
84#define E1000_RXD_ERR_CE 0x01 /* CRC Error */
85#define E1000_RXD_ERR_SE 0x02 /* Symbol Error */
86#define E1000_RXD_ERR_SEQ 0x04 /* Sequence Error */
87#define E1000_RXD_ERR_CXE 0x10 /* Carrier Extension Error */
88#define E1000_RXD_ERR_TCPE 0x20 /* TCP/UDP Checksum Error */
89#define E1000_RXD_ERR_RXE 0x80 /* Rx Data Error */
90#define E1000_RXD_SPC_VLAN_MASK 0x0FFF /* VLAN ID is in lower 12 bits */
91
92#define E1000_RXDEXT_STATERR_CE 0x01000000
93#define E1000_RXDEXT_STATERR_SE 0x02000000
94#define E1000_RXDEXT_STATERR_SEQ 0x04000000
95#define E1000_RXDEXT_STATERR_CXE 0x10000000
96#define E1000_RXDEXT_STATERR_RXE 0x80000000
97
98/* mask to determine if packets should be dropped due to frame errors */
99#define E1000_RXD_ERR_FRAME_ERR_MASK ( \
100 E1000_RXD_ERR_CE | \
101 E1000_RXD_ERR_SE | \
102 E1000_RXD_ERR_SEQ | \
103 E1000_RXD_ERR_CXE | \
104 E1000_RXD_ERR_RXE)
105
106/* Same mask, but for extended and packet split descriptors */
107#define E1000_RXDEXT_ERR_FRAME_ERR_MASK ( \
108 E1000_RXDEXT_STATERR_CE | \
109 E1000_RXDEXT_STATERR_SE | \
110 E1000_RXDEXT_STATERR_SEQ | \
111 E1000_RXDEXT_STATERR_CXE | \
112 E1000_RXDEXT_STATERR_RXE)
113
114#define E1000_RXDPS_HDRSTAT_HDRSP 0x00008000
115
116/* Management Control */
117#define E1000_MANC_SMBUS_EN 0x00000001 /* SMBus Enabled - RO */
118#define E1000_MANC_ASF_EN 0x00000002 /* ASF Enabled - RO */
119#define E1000_MANC_ARP_EN 0x00002000 /* Enable ARP Request Filtering */
120#define E1000_MANC_RCV_TCO_EN 0x00020000 /* Receive TCO Packets Enabled */
121#define E1000_MANC_BLK_PHY_RST_ON_IDE 0x00040000 /* Block phy resets */
122#define E1000_MANC_EN_MAC_ADDR_FILTER 0x00100000 /* Enable MAC address
123 * filtering */
124#define E1000_MANC_EN_MNG2HOST 0x00200000 /* Enable MNG packets to host
125 * memory */
126
127/* Receive Control */
128#define E1000_RCTL_EN 0x00000002 /* enable */
129#define E1000_RCTL_SBP 0x00000004 /* store bad packet */
130#define E1000_RCTL_UPE 0x00000008 /* unicast promiscuous enable */
131#define E1000_RCTL_MPE 0x00000010 /* multicast promiscuous enab */
132#define E1000_RCTL_LPE 0x00000020 /* long packet enable */
133#define E1000_RCTL_LBM_NO 0x00000000 /* no loopback mode */
134#define E1000_RCTL_LBM_MAC 0x00000040 /* MAC loopback mode */
135#define E1000_RCTL_LBM_TCVR 0x000000C0 /* tcvr loopback mode */
136#define E1000_RCTL_DTYP_PS 0x00000400 /* Packet Split descriptor */
137#define E1000_RCTL_RDMTS_HALF 0x00000000 /* rx desc min threshold size */
138#define E1000_RCTL_MO_SHIFT 12 /* multicast offset shift */
139#define E1000_RCTL_BAM 0x00008000 /* broadcast enable */
140/* these buffer sizes are valid if E1000_RCTL_BSEX is 0 */
141#define E1000_RCTL_SZ_2048 0x00000000 /* rx buffer size 2048 */
142#define E1000_RCTL_SZ_1024 0x00010000 /* rx buffer size 1024 */
143#define E1000_RCTL_SZ_512 0x00020000 /* rx buffer size 512 */
144#define E1000_RCTL_SZ_256 0x00030000 /* rx buffer size 256 */
145/* these buffer sizes are valid if E1000_RCTL_BSEX is 1 */
146#define E1000_RCTL_SZ_16384 0x00010000 /* rx buffer size 16384 */
147#define E1000_RCTL_SZ_8192 0x00020000 /* rx buffer size 8192 */
148#define E1000_RCTL_SZ_4096 0x00030000 /* rx buffer size 4096 */
149#define E1000_RCTL_VFE 0x00040000 /* vlan filter enable */
150#define E1000_RCTL_CFIEN 0x00080000 /* canonical form enable */
151#define E1000_RCTL_CFI 0x00100000 /* canonical form indicator */
152#define E1000_RCTL_BSEX 0x02000000 /* Buffer size extension */
153#define E1000_RCTL_SECRC 0x04000000 /* Strip Ethernet CRC */
154
155/* Use byte values for the following shift parameters
156 * Usage:
157 * psrctl |= (((ROUNDUP(value0, 128) >> E1000_PSRCTL_BSIZE0_SHIFT) &
158 * E1000_PSRCTL_BSIZE0_MASK) |
159 * ((ROUNDUP(value1, 1024) >> E1000_PSRCTL_BSIZE1_SHIFT) &
160 * E1000_PSRCTL_BSIZE1_MASK) |
161 * ((ROUNDUP(value2, 1024) << E1000_PSRCTL_BSIZE2_SHIFT) &
162 * E1000_PSRCTL_BSIZE2_MASK) |
163 * ((ROUNDUP(value3, 1024) << E1000_PSRCTL_BSIZE3_SHIFT) |;
164 * E1000_PSRCTL_BSIZE3_MASK))
165 * where value0 = [128..16256], default=256
166 * value1 = [1024..64512], default=4096
167 * value2 = [0..64512], default=4096
168 * value3 = [0..64512], default=0
169 */
170
171#define E1000_PSRCTL_BSIZE0_MASK 0x0000007F
172#define E1000_PSRCTL_BSIZE1_MASK 0x00003F00
173#define E1000_PSRCTL_BSIZE2_MASK 0x003F0000
174#define E1000_PSRCTL_BSIZE3_MASK 0x3F000000
175
176#define E1000_PSRCTL_BSIZE0_SHIFT 7 /* Shift _right_ 7 */
177#define E1000_PSRCTL_BSIZE1_SHIFT 2 /* Shift _right_ 2 */
178#define E1000_PSRCTL_BSIZE2_SHIFT 6 /* Shift _left_ 6 */
179#define E1000_PSRCTL_BSIZE3_SHIFT 14 /* Shift _left_ 14 */
180
181/* SWFW_SYNC Definitions */
182#define E1000_SWFW_EEP_SM 0x1
183#define E1000_SWFW_PHY0_SM 0x2
184#define E1000_SWFW_PHY1_SM 0x4
185
186/* Device Control */
187#define E1000_CTRL_FD 0x00000001 /* Full duplex.0=half; 1=full */
188#define E1000_CTRL_GIO_MASTER_DISABLE 0x00000004 /*Blocks new Master requests */
189#define E1000_CTRL_LRST 0x00000008 /* Link reset. 0=normal,1=reset */
190#define E1000_CTRL_ASDE 0x00000020 /* Auto-speed detect enable */
191#define E1000_CTRL_SLU 0x00000040 /* Set link up (Force Link) */
192#define E1000_CTRL_ILOS 0x00000080 /* Invert Loss-Of Signal */
193#define E1000_CTRL_SPD_SEL 0x00000300 /* Speed Select Mask */
194#define E1000_CTRL_SPD_10 0x00000000 /* Force 10Mb */
195#define E1000_CTRL_SPD_100 0x00000100 /* Force 100Mb */
196#define E1000_CTRL_SPD_1000 0x00000200 /* Force 1Gb */
197#define E1000_CTRL_FRCSPD 0x00000800 /* Force Speed */
198#define E1000_CTRL_FRCDPX 0x00001000 /* Force Duplex */
199#define E1000_CTRL_SWDPIN0 0x00040000 /* SWDPIN 0 value */
200#define E1000_CTRL_SWDPIN1 0x00080000 /* SWDPIN 1 value */
201#define E1000_CTRL_SWDPIO0 0x00400000 /* SWDPIN 0 Input or output */
202#define E1000_CTRL_RST 0x04000000 /* Global reset */
203#define E1000_CTRL_RFCE 0x08000000 /* Receive Flow Control enable */
204#define E1000_CTRL_TFCE 0x10000000 /* Transmit flow control enable */
205#define E1000_CTRL_VME 0x40000000 /* IEEE VLAN mode enable */
206#define E1000_CTRL_PHY_RST 0x80000000 /* PHY Reset */
207
208/* Bit definitions for the Management Data IO (MDIO) and Management Data
209 * Clock (MDC) pins in the Device Control Register.
210 */
211
212/* Device Status */
213#define E1000_STATUS_FD 0x00000001 /* Full duplex.0=half,1=full */
214#define E1000_STATUS_LU 0x00000002 /* Link up.0=no,1=link */
215#define E1000_STATUS_FUNC_MASK 0x0000000C /* PCI Function Mask */
216#define E1000_STATUS_FUNC_SHIFT 2
217#define E1000_STATUS_FUNC_1 0x00000004 /* Function 1 */
218#define E1000_STATUS_TXOFF 0x00000010 /* transmission paused */
219#define E1000_STATUS_SPEED_10 0x00000000 /* Speed 10Mb/s */
220#define E1000_STATUS_SPEED_100 0x00000040 /* Speed 100Mb/s */
221#define E1000_STATUS_SPEED_1000 0x00000080 /* Speed 1000Mb/s */
222#define E1000_STATUS_LAN_INIT_DONE 0x00000200 /* Lan Init Completion by NVM */
223#define E1000_STATUS_GIO_MASTER_ENABLE 0x00080000 /* Status of Master requests. */
224
225/* Constants used to intrepret the masked PCI-X bus speed. */
226
227#define HALF_DUPLEX 1
228#define FULL_DUPLEX 2
229
230
231#define ADVERTISE_10_HALF 0x0001
232#define ADVERTISE_10_FULL 0x0002
233#define ADVERTISE_100_HALF 0x0004
234#define ADVERTISE_100_FULL 0x0008
235#define ADVERTISE_1000_HALF 0x0010 /* Not used, just FYI */
236#define ADVERTISE_1000_FULL 0x0020
237
238/* 1000/H is not supported, nor spec-compliant. */
239#define E1000_ALL_SPEED_DUPLEX ( ADVERTISE_10_HALF | ADVERTISE_10_FULL | \
240 ADVERTISE_100_HALF | ADVERTISE_100_FULL | \
241 ADVERTISE_1000_FULL)
242#define E1000_ALL_NOT_GIG ( ADVERTISE_10_HALF | ADVERTISE_10_FULL | \
243 ADVERTISE_100_HALF | ADVERTISE_100_FULL)
244#define E1000_ALL_100_SPEED (ADVERTISE_100_HALF | ADVERTISE_100_FULL)
245#define E1000_ALL_10_SPEED (ADVERTISE_10_HALF | ADVERTISE_10_FULL)
246#define E1000_ALL_HALF_DUPLEX (ADVERTISE_10_HALF | ADVERTISE_100_HALF)
247
248#define AUTONEG_ADVERTISE_SPEED_DEFAULT E1000_ALL_SPEED_DUPLEX
249
250/* LED Control */
251#define E1000_LEDCTL_LED0_MODE_MASK 0x0000000F
252#define E1000_LEDCTL_LED0_MODE_SHIFT 0
253#define E1000_LEDCTL_LED0_IVRT 0x00000040
254#define E1000_LEDCTL_LED0_BLINK 0x00000080
255
256#define E1000_LEDCTL_MODE_LED_ON 0xE
257#define E1000_LEDCTL_MODE_LED_OFF 0xF
258
259/* Transmit Descriptor bit definitions */
260#define E1000_TXD_DTYP_D 0x00100000 /* Data Descriptor */
261#define E1000_TXD_POPTS_IXSM 0x01 /* Insert IP checksum */
262#define E1000_TXD_POPTS_TXSM 0x02 /* Insert TCP/UDP checksum */
263#define E1000_TXD_CMD_EOP 0x01000000 /* End of Packet */
264#define E1000_TXD_CMD_IFCS 0x02000000 /* Insert FCS (Ethernet CRC) */
265#define E1000_TXD_CMD_IC 0x04000000 /* Insert Checksum */
266#define E1000_TXD_CMD_RS 0x08000000 /* Report Status */
267#define E1000_TXD_CMD_RPS 0x10000000 /* Report Packet Sent */
268#define E1000_TXD_CMD_DEXT 0x20000000 /* Descriptor extension (0 = legacy) */
269#define E1000_TXD_CMD_VLE 0x40000000 /* Add VLAN tag */
270#define E1000_TXD_CMD_IDE 0x80000000 /* Enable Tidv register */
271#define E1000_TXD_STAT_DD 0x00000001 /* Descriptor Done */
272#define E1000_TXD_STAT_EC 0x00000002 /* Excess Collisions */
273#define E1000_TXD_STAT_LC 0x00000004 /* Late Collisions */
274#define E1000_TXD_STAT_TU 0x00000008 /* Transmit underrun */
275#define E1000_TXD_CMD_TCP 0x01000000 /* TCP packet */
276#define E1000_TXD_CMD_IP 0x02000000 /* IP packet */
277#define E1000_TXD_CMD_TSE 0x04000000 /* TCP Seg enable */
278#define E1000_TXD_STAT_TC 0x00000004 /* Tx Underrun */
279
280/* Transmit Control */
281#define E1000_TCTL_EN 0x00000002 /* enable tx */
282#define E1000_TCTL_PSP 0x00000008 /* pad short packets */
283#define E1000_TCTL_CT 0x00000ff0 /* collision threshold */
284#define E1000_TCTL_COLD 0x003ff000 /* collision distance */
285#define E1000_TCTL_RTLC 0x01000000 /* Re-transmit on late collision */
286#define E1000_TCTL_MULR 0x10000000 /* Multiple request support */
287
288/* Transmit Arbitration Count */
289
290/* SerDes Control */
291#define E1000_SCTL_DISABLE_SERDES_LOOPBACK 0x0400
292
293/* Receive Checksum Control */
294#define E1000_RXCSUM_TUOFL 0x00000200 /* TCP / UDP checksum offload */
295#define E1000_RXCSUM_IPPCSE 0x00001000 /* IP payload checksum enable */
296
297/* Header split receive */
298#define E1000_RFCTL_EXTEN 0x00008000
299#define E1000_RFCTL_IPV6_EX_DIS 0x00010000
300#define E1000_RFCTL_NEW_IPV6_EXT_DIS 0x00020000
301
302/* Collision related configuration parameters */
303#define E1000_COLLISION_THRESHOLD 15
304#define E1000_CT_SHIFT 4
305#define E1000_COLLISION_DISTANCE 63
306#define E1000_COLD_SHIFT 12
307
308/* Default values for the transmit IPG register */
309#define DEFAULT_82543_TIPG_IPGT_COPPER 8
310
311#define E1000_TIPG_IPGT_MASK 0x000003FF
312
313#define DEFAULT_82543_TIPG_IPGR1 8
314#define E1000_TIPG_IPGR1_SHIFT 10
315
316#define DEFAULT_82543_TIPG_IPGR2 6
317#define DEFAULT_80003ES2LAN_TIPG_IPGR2 7
318#define E1000_TIPG_IPGR2_SHIFT 20
319
320#define MAX_JUMBO_FRAME_SIZE 0x3F00
321
322/* Extended Configuration Control and Size */
323#define E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP 0x00000020
324#define E1000_EXTCNF_CTRL_LCD_WRITE_ENABLE 0x00000001
325#define E1000_EXTCNF_CTRL_SWFLAG 0x00000020
326#define E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_MASK 0x00FF0000
327#define E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_SHIFT 16
328#define E1000_EXTCNF_CTRL_EXT_CNF_POINTER_MASK 0x0FFF0000
329#define E1000_EXTCNF_CTRL_EXT_CNF_POINTER_SHIFT 16
330
331#define E1000_PHY_CTRL_D0A_LPLU 0x00000002
332#define E1000_PHY_CTRL_NOND0A_LPLU 0x00000004
333#define E1000_PHY_CTRL_NOND0A_GBE_DISABLE 0x00000008
334#define E1000_PHY_CTRL_GBE_DISABLE 0x00000040
335
336#define E1000_KABGTXD_BGSQLBIAS 0x00050000
337
338/* PBA constants */
339#define E1000_PBA_8K 0x0008 /* 8KB, default Rx allocation */
340#define E1000_PBA_16K 0x0010 /* 16KB, default TX allocation */
341
342#define E1000_PBS_16K E1000_PBA_16K
343
344#define IFS_MAX 80
345#define IFS_MIN 40
346#define IFS_RATIO 4
347#define IFS_STEP 10
348#define MIN_NUM_XMITS 1000
349
350/* SW Semaphore Register */
351#define E1000_SWSM_SMBI 0x00000001 /* Driver Semaphore bit */
352#define E1000_SWSM_SWESMBI 0x00000002 /* FW Semaphore bit */
353#define E1000_SWSM_DRV_LOAD 0x00000008 /* Driver Loaded Bit */
354
355/* Interrupt Cause Read */
356#define E1000_ICR_TXDW 0x00000001 /* Transmit desc written back */
357#define E1000_ICR_LSC 0x00000004 /* Link Status Change */
358#define E1000_ICR_RXSEQ 0x00000008 /* rx sequence error */
359#define E1000_ICR_RXDMT0 0x00000010 /* rx desc min. threshold (0) */
360#define E1000_ICR_RXT0 0x00000080 /* rx timer intr (ring 0) */
361#define E1000_ICR_INT_ASSERTED 0x80000000 /* If this bit asserted, the driver should claim the interrupt */
362
363/* This defines the bits that are set in the Interrupt Mask
364 * Set/Read Register. Each bit is documented below:
365 * o RXT0 = Receiver Timer Interrupt (ring 0)
366 * o TXDW = Transmit Descriptor Written Back
367 * o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0)
368 * o RXSEQ = Receive Sequence Error
369 * o LSC = Link Status Change
370 */
371#define IMS_ENABLE_MASK ( \
372 E1000_IMS_RXT0 | \
373 E1000_IMS_TXDW | \
374 E1000_IMS_RXDMT0 | \
375 E1000_IMS_RXSEQ | \
376 E1000_IMS_LSC)
377
378/* Interrupt Mask Set */
379#define E1000_IMS_TXDW E1000_ICR_TXDW /* Transmit desc written back */
380#define E1000_IMS_LSC E1000_ICR_LSC /* Link Status Change */
381#define E1000_IMS_RXSEQ E1000_ICR_RXSEQ /* rx sequence error */
382#define E1000_IMS_RXDMT0 E1000_ICR_RXDMT0 /* rx desc min. threshold */
383#define E1000_IMS_RXT0 E1000_ICR_RXT0 /* rx timer intr */
384
385/* Interrupt Cause Set */
386#define E1000_ICS_LSC E1000_ICR_LSC /* Link Status Change */
387#define E1000_ICS_RXDMT0 E1000_ICR_RXDMT0 /* rx desc min. threshold */
388
389/* Transmit Descriptor Control */
390#define E1000_TXDCTL_PTHRESH 0x0000003F /* TXDCTL Prefetch Threshold */
391#define E1000_TXDCTL_WTHRESH 0x003F0000 /* TXDCTL Writeback Threshold */
392#define E1000_TXDCTL_FULL_TX_DESC_WB 0x01010000 /* GRAN=1, WTHRESH=1 */
393#define E1000_TXDCTL_MAX_TX_DESC_PREFETCH 0x0100001F /* GRAN=1, PTHRESH=31 */
394#define E1000_TXDCTL_COUNT_DESC 0x00400000 /* Enable the counting of desc.
395 still to be processed. */
396
397/* Flow Control Constants */
398#define FLOW_CONTROL_ADDRESS_LOW 0x00C28001
399#define FLOW_CONTROL_ADDRESS_HIGH 0x00000100
400#define FLOW_CONTROL_TYPE 0x8808
401
402/* 802.1q VLAN Packet Size */
403#define E1000_VLAN_FILTER_TBL_SIZE 128 /* VLAN Filter Table (4096 bits) */
404
405/* Receive Address */
406/* Number of high/low register pairs in the RAR. The RAR (Receive Address
407 * Registers) holds the directed and multicast addresses that we monitor.
408 * Technically, we have 16 spots. However, we reserve one of these spots
409 * (RAR[15]) for our directed address used by controllers with
410 * manageability enabled, allowing us room for 15 multicast addresses.
411 */
412#define E1000_RAR_ENTRIES 15
413#define E1000_RAH_AV 0x80000000 /* Receive descriptor valid */
414
415/* Error Codes */
416#define E1000_ERR_NVM 1
417#define E1000_ERR_PHY 2
418#define E1000_ERR_CONFIG 3
419#define E1000_ERR_PARAM 4
420#define E1000_ERR_MAC_INIT 5
421#define E1000_ERR_PHY_TYPE 6
422#define E1000_ERR_RESET 9
423#define E1000_ERR_MASTER_REQUESTS_PENDING 10
424#define E1000_ERR_HOST_INTERFACE_COMMAND 11
425#define E1000_BLK_PHY_RESET 12
426#define E1000_ERR_SWFW_SYNC 13
427#define E1000_NOT_IMPLEMENTED 14
428
429/* Loop limit on how long we wait for auto-negotiation to complete */
430#define FIBER_LINK_UP_LIMIT 50
431#define COPPER_LINK_UP_LIMIT 10
432#define PHY_AUTO_NEG_LIMIT 45
433#define PHY_FORCE_LIMIT 20
434/* Number of 100 microseconds we wait for PCI Express master disable */
435#define MASTER_DISABLE_TIMEOUT 800
436/* Number of milliseconds we wait for PHY configuration done after MAC reset */
437#define PHY_CFG_TIMEOUT 100
438/* Number of 2 milliseconds we wait for acquiring MDIO ownership. */
439#define MDIO_OWNERSHIP_TIMEOUT 10
440/* Number of milliseconds for NVM auto read done after MAC reset. */
441#define AUTO_READ_DONE_TIMEOUT 10
442
443/* Flow Control */
444#define E1000_FCRTL_XONE 0x80000000 /* Enable XON frame transmission */
445
446/* Transmit Configuration Word */
447#define E1000_TXCW_FD 0x00000020 /* TXCW full duplex */
448#define E1000_TXCW_PAUSE 0x00000080 /* TXCW sym pause request */
449#define E1000_TXCW_ASM_DIR 0x00000100 /* TXCW astm pause direction */
450#define E1000_TXCW_PAUSE_MASK 0x00000180 /* TXCW pause request mask */
451#define E1000_TXCW_ANE 0x80000000 /* Auto-neg enable */
452
453/* Receive Configuration Word */
454#define E1000_RXCW_IV 0x08000000 /* Receive config invalid */
455#define E1000_RXCW_C 0x20000000 /* Receive config */
456#define E1000_RXCW_SYNCH 0x40000000 /* Receive config synch */
457
458/* PCI Express Control */
459#define E1000_GCR_RXD_NO_SNOOP 0x00000001
460#define E1000_GCR_RXDSCW_NO_SNOOP 0x00000002
461#define E1000_GCR_RXDSCR_NO_SNOOP 0x00000004
462#define E1000_GCR_TXD_NO_SNOOP 0x00000008
463#define E1000_GCR_TXDSCW_NO_SNOOP 0x00000010
464#define E1000_GCR_TXDSCR_NO_SNOOP 0x00000020
465
466#define PCIE_NO_SNOOP_ALL (E1000_GCR_RXD_NO_SNOOP | \
467 E1000_GCR_RXDSCW_NO_SNOOP | \
468 E1000_GCR_RXDSCR_NO_SNOOP | \
469 E1000_GCR_TXD_NO_SNOOP | \
470 E1000_GCR_TXDSCW_NO_SNOOP | \
471 E1000_GCR_TXDSCR_NO_SNOOP)
472
473/* PHY Control Register */
474#define MII_CR_FULL_DUPLEX 0x0100 /* FDX =1, half duplex =0 */
475#define MII_CR_RESTART_AUTO_NEG 0x0200 /* Restart auto negotiation */
476#define MII_CR_POWER_DOWN 0x0800 /* Power down */
477#define MII_CR_AUTO_NEG_EN 0x1000 /* Auto Neg Enable */
478#define MII_CR_LOOPBACK 0x4000 /* 0 = normal, 1 = loopback */
479#define MII_CR_RESET 0x8000 /* 0 = normal, 1 = PHY reset */
480#define MII_CR_SPEED_1000 0x0040
481#define MII_CR_SPEED_100 0x2000
482#define MII_CR_SPEED_10 0x0000
483
484/* PHY Status Register */
485#define MII_SR_LINK_STATUS 0x0004 /* Link Status 1 = link */
486#define MII_SR_AUTONEG_COMPLETE 0x0020 /* Auto Neg Complete */
487
488/* Autoneg Advertisement Register */
489#define NWAY_AR_10T_HD_CAPS 0x0020 /* 10T Half Duplex Capable */
490#define NWAY_AR_10T_FD_CAPS 0x0040 /* 10T Full Duplex Capable */
491#define NWAY_AR_100TX_HD_CAPS 0x0080 /* 100TX Half Duplex Capable */
492#define NWAY_AR_100TX_FD_CAPS 0x0100 /* 100TX Full Duplex Capable */
493#define NWAY_AR_PAUSE 0x0400 /* Pause operation desired */
494#define NWAY_AR_ASM_DIR 0x0800 /* Asymmetric Pause Direction bit */
495
496/* Link Partner Ability Register (Base Page) */
497#define NWAY_LPAR_PAUSE 0x0400 /* LP Pause operation desired */
498#define NWAY_LPAR_ASM_DIR 0x0800 /* LP Asymmetric Pause Direction bit */
499
500/* Autoneg Expansion Register */
501
502/* 1000BASE-T Control Register */
503#define CR_1000T_HD_CAPS 0x0100 /* Advertise 1000T HD capability */
504#define CR_1000T_FD_CAPS 0x0200 /* Advertise 1000T FD capability */
505 /* 0=DTE device */
506#define CR_1000T_MS_VALUE 0x0800 /* 1=Configure PHY as Master */
507 /* 0=Configure PHY as Slave */
508#define CR_1000T_MS_ENABLE 0x1000 /* 1=Master/Slave manual config value */
509 /* 0=Automatic Master/Slave config */
510
511/* 1000BASE-T Status Register */
512#define SR_1000T_REMOTE_RX_STATUS 0x1000 /* Remote receiver OK */
513#define SR_1000T_LOCAL_RX_STATUS 0x2000 /* Local receiver OK */
514
515
516/* PHY 1000 MII Register/Bit Definitions */
517/* PHY Registers defined by IEEE */
518#define PHY_CONTROL 0x00 /* Control Register */
519#define PHY_STATUS 0x01 /* Status Regiser */
520#define PHY_ID1 0x02 /* Phy Id Reg (word 1) */
521#define PHY_ID2 0x03 /* Phy Id Reg (word 2) */
522#define PHY_AUTONEG_ADV 0x04 /* Autoneg Advertisement */
523#define PHY_LP_ABILITY 0x05 /* Link Partner Ability (Base Page) */
524#define PHY_1000T_CTRL 0x09 /* 1000Base-T Control Reg */
525#define PHY_1000T_STATUS 0x0A /* 1000Base-T Status Reg */
526
527/* NVM Control */
528#define E1000_EECD_SK 0x00000001 /* NVM Clock */
529#define E1000_EECD_CS 0x00000002 /* NVM Chip Select */
530#define E1000_EECD_DI 0x00000004 /* NVM Data In */
531#define E1000_EECD_DO 0x00000008 /* NVM Data Out */
532#define E1000_EECD_REQ 0x00000040 /* NVM Access Request */
533#define E1000_EECD_GNT 0x00000080 /* NVM Access Grant */
534#define E1000_EECD_SIZE 0x00000200 /* NVM Size (0=64 word 1=256 word) */
535#define E1000_EECD_ADDR_BITS 0x00000400 /* NVM Addressing bits based on type
536 * (0-small, 1-large) */
537#define E1000_NVM_GRANT_ATTEMPTS 1000 /* NVM # attempts to gain grant */
538#define E1000_EECD_AUTO_RD 0x00000200 /* NVM Auto Read done */
539#define E1000_EECD_SIZE_EX_MASK 0x00007800 /* NVM Size */
540#define E1000_EECD_SIZE_EX_SHIFT 11
541#define E1000_EECD_FLUPD 0x00080000 /* Update FLASH */
542#define E1000_EECD_AUPDEN 0x00100000 /* Enable Autonomous FLASH update */
543#define E1000_EECD_SEC1VAL 0x00400000 /* Sector One Valid */
544
545#define E1000_NVM_RW_REG_DATA 16 /* Offset to data in NVM read/write registers */
546#define E1000_NVM_RW_REG_DONE 2 /* Offset to READ/WRITE done bit */
547#define E1000_NVM_RW_REG_START 1 /* Start operation */
548#define E1000_NVM_RW_ADDR_SHIFT 2 /* Shift to the address bits */
549#define E1000_NVM_POLL_WRITE 1 /* Flag for polling for write complete */
550#define E1000_NVM_POLL_READ 0 /* Flag for polling for read complete */
551#define E1000_FLASH_UPDATES 2000
552
553/* NVM Word Offsets */
554#define NVM_ID_LED_SETTINGS 0x0004
555#define NVM_INIT_CONTROL2_REG 0x000F
556#define NVM_INIT_CONTROL3_PORT_B 0x0014
557#define NVM_INIT_3GIO_3 0x001A
558#define NVM_INIT_CONTROL3_PORT_A 0x0024
559#define NVM_CFG 0x0012
560#define NVM_CHECKSUM_REG 0x003F
561
562#define E1000_NVM_CFG_DONE_PORT_0 0x40000 /* MNG config cycle done */
563#define E1000_NVM_CFG_DONE_PORT_1 0x80000 /* ...for second port */
564
565/* Mask bits for fields in Word 0x0f of the NVM */
566#define NVM_WORD0F_PAUSE_MASK 0x3000
567#define NVM_WORD0F_PAUSE 0x1000
568#define NVM_WORD0F_ASM_DIR 0x2000
569
570/* Mask bits for fields in Word 0x1a of the NVM */
571#define NVM_WORD1A_ASPM_MASK 0x000C
572
573/* For checksumming, the sum of all words in the NVM should equal 0xBABA. */
574#define NVM_SUM 0xBABA
575
576/* PBA (printed board assembly) number words */
577#define NVM_PBA_OFFSET_0 8
578#define NVM_PBA_OFFSET_1 9
579
580#define NVM_WORD_SIZE_BASE_SHIFT 6
581
582/* NVM Commands - SPI */
583#define NVM_MAX_RETRY_SPI 5000 /* Max wait of 5ms, for RDY signal */
584#define NVM_READ_OPCODE_SPI 0x03 /* NVM read opcode */
585#define NVM_WRITE_OPCODE_SPI 0x02 /* NVM write opcode */
586#define NVM_A8_OPCODE_SPI 0x08 /* opcode bit-3 = address bit-8 */
587#define NVM_WREN_OPCODE_SPI 0x06 /* NVM set Write Enable latch */
588#define NVM_RDSR_OPCODE_SPI 0x05 /* NVM read Status register */
589
590/* SPI NVM Status Register */
591#define NVM_STATUS_RDY_SPI 0x01
592
593/* Word definitions for ID LED Settings */
594#define ID_LED_RESERVED_0000 0x0000
595#define ID_LED_RESERVED_FFFF 0xFFFF
596#define ID_LED_DEFAULT ((ID_LED_OFF1_ON2 << 12) | \
597 (ID_LED_OFF1_OFF2 << 8) | \
598 (ID_LED_DEF1_DEF2 << 4) | \
599 (ID_LED_DEF1_DEF2))
600#define ID_LED_DEF1_DEF2 0x1
601#define ID_LED_DEF1_ON2 0x2
602#define ID_LED_DEF1_OFF2 0x3
603#define ID_LED_ON1_DEF2 0x4
604#define ID_LED_ON1_ON2 0x5
605#define ID_LED_ON1_OFF2 0x6
606#define ID_LED_OFF1_DEF2 0x7
607#define ID_LED_OFF1_ON2 0x8
608#define ID_LED_OFF1_OFF2 0x9
609
610#define IGP_ACTIVITY_LED_MASK 0xFFFFF0FF
611#define IGP_ACTIVITY_LED_ENABLE 0x0300
612#define IGP_LED3_MODE 0x07000000
613
614/* PCI/PCI-X/PCI-EX Config space */
615#define PCI_HEADER_TYPE_REGISTER 0x0E
616#define PCIE_LINK_STATUS 0x12
617
618#define PCI_HEADER_TYPE_MULTIFUNC 0x80
619#define PCIE_LINK_WIDTH_MASK 0x3F0
620#define PCIE_LINK_WIDTH_SHIFT 4
621
622#define PHY_REVISION_MASK 0xFFFFFFF0
623#define MAX_PHY_REG_ADDRESS 0x1F /* 5 bit address bus (0-0x1F) */
624#define MAX_PHY_MULTI_PAGE_REG 0xF
625
626/* Bit definitions for valid PHY IDs. */
627/* I = Integrated
628 * E = External
629 */
630#define M88E1000_E_PHY_ID 0x01410C50
631#define M88E1000_I_PHY_ID 0x01410C30
632#define M88E1011_I_PHY_ID 0x01410C20
633#define IGP01E1000_I_PHY_ID 0x02A80380
634#define M88E1111_I_PHY_ID 0x01410CC0
635#define GG82563_E_PHY_ID 0x01410CA0
636#define IGP03E1000_E_PHY_ID 0x02A80390
637#define IFE_E_PHY_ID 0x02A80330
638#define IFE_PLUS_E_PHY_ID 0x02A80320
639#define IFE_C_E_PHY_ID 0x02A80310
640
641/* M88E1000 Specific Registers */
642#define M88E1000_PHY_SPEC_CTRL 0x10 /* PHY Specific Control Register */
643#define M88E1000_PHY_SPEC_STATUS 0x11 /* PHY Specific Status Register */
644#define M88E1000_EXT_PHY_SPEC_CTRL 0x14 /* Extended PHY Specific Control */
645
646#define M88E1000_PHY_PAGE_SELECT 0x1D /* Reg 29 for page number setting */
647#define M88E1000_PHY_GEN_CONTROL 0x1E /* Its meaning depends on reg 29 */
648
649/* M88E1000 PHY Specific Control Register */
650#define M88E1000_PSCR_POLARITY_REVERSAL 0x0002 /* 1=Polarity Reversal enabled */
651#define M88E1000_PSCR_MDI_MANUAL_MODE 0x0000 /* MDI Crossover Mode bits 6:5 */
652 /* Manual MDI configuration */
653#define M88E1000_PSCR_MDIX_MANUAL_MODE 0x0020 /* Manual MDIX configuration */
654#define M88E1000_PSCR_AUTO_X_1000T 0x0040 /* 1000BASE-T: Auto crossover,
655 * 100BASE-TX/10BASE-T:
656 * MDI Mode
657 */
658#define M88E1000_PSCR_AUTO_X_MODE 0x0060 /* Auto crossover enabled
659 * all speeds.
660 */
661 /* 1=Enable Extended 10BASE-T distance
662 * (Lower 10BASE-T RX Threshold)
663 * 0=Normal 10BASE-T RX Threshold */
664 /* 1=5-Bit interface in 100BASE-TX
665 * 0=MII interface in 100BASE-TX */
666#define M88E1000_PSCR_ASSERT_CRS_ON_TX 0x0800 /* 1=Assert CRS on Transmit */
667
668/* M88E1000 PHY Specific Status Register */
669#define M88E1000_PSSR_REV_POLARITY 0x0002 /* 1=Polarity reversed */
670#define M88E1000_PSSR_DOWNSHIFT 0x0020 /* 1=Downshifted */
671#define M88E1000_PSSR_MDIX 0x0040 /* 1=MDIX; 0=MDI */
672#define M88E1000_PSSR_CABLE_LENGTH 0x0380 /* 0=<50M;1=50-80M;2=80-110M;
673 * 3=110-140M;4=>140M */
674#define M88E1000_PSSR_SPEED 0xC000 /* Speed, bits 14:15 */
675#define M88E1000_PSSR_1000MBS 0x8000 /* 10=1000Mbs */
676
677#define M88E1000_PSSR_CABLE_LENGTH_SHIFT 7
678
679/* Number of times we will attempt to autonegotiate before downshifting if we
680 * are the master */
681#define M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK 0x0C00
682#define M88E1000_EPSCR_MASTER_DOWNSHIFT_1X 0x0000
683/* Number of times we will attempt to autonegotiate before downshifting if we
684 * are the slave */
685#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK 0x0300
686#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X 0x0100
687#define M88E1000_EPSCR_TX_CLK_25 0x0070 /* 25 MHz TX_CLK */
688
689/* M88EC018 Rev 2 specific DownShift settings */
690#define M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK 0x0E00
691#define M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X 0x0800
692
693/* Bits...
694 * 15-5: page
695 * 4-0: register offset
696 */
697#define GG82563_PAGE_SHIFT 5
698#define GG82563_REG(page, reg) \
699 (((page) << GG82563_PAGE_SHIFT) | ((reg) & MAX_PHY_REG_ADDRESS))
700#define GG82563_MIN_ALT_REG 30
701
702/* GG82563 Specific Registers */
703#define GG82563_PHY_SPEC_CTRL \
704 GG82563_REG(0, 16) /* PHY Specific Control */
705#define GG82563_PHY_PAGE_SELECT \
706 GG82563_REG(0, 22) /* Page Select */
707#define GG82563_PHY_SPEC_CTRL_2 \
708 GG82563_REG(0, 26) /* PHY Specific Control 2 */
709#define GG82563_PHY_PAGE_SELECT_ALT \
710 GG82563_REG(0, 29) /* Alternate Page Select */
711
712#define GG82563_PHY_MAC_SPEC_CTRL \
713 GG82563_REG(2, 21) /* MAC Specific Control Register */
714
715#define GG82563_PHY_DSP_DISTANCE \
716 GG82563_REG(5, 26) /* DSP Distance */
717
718/* Page 193 - Port Control Registers */
719#define GG82563_PHY_KMRN_MODE_CTRL \
720 GG82563_REG(193, 16) /* Kumeran Mode Control */
721#define GG82563_PHY_PWR_MGMT_CTRL \
722 GG82563_REG(193, 20) /* Power Management Control */
723
724/* Page 194 - KMRN Registers */
725#define GG82563_PHY_INBAND_CTRL \
726 GG82563_REG(194, 18) /* Inband Control */
727
728/* MDI Control */
729#define E1000_MDIC_REG_SHIFT 16
730#define E1000_MDIC_PHY_SHIFT 21
731#define E1000_MDIC_OP_WRITE 0x04000000
732#define E1000_MDIC_OP_READ 0x08000000
733#define E1000_MDIC_READY 0x10000000
734#define E1000_MDIC_ERROR 0x40000000
735
736/* SerDes Control */
737#define E1000_GEN_POLL_TIMEOUT 640
738
739#endif /* _E1000_DEFINES_H_ */
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
new file mode 100644
index 000000000000..d2499bb07c13
--- /dev/null
+++ b/drivers/net/e1000e/e1000.h
@@ -0,0 +1,514 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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/* Linux PRO/1000 Ethernet Driver main header file */
30
31#ifndef _E1000_H_
32#define _E1000_H_
33
34#include <linux/types.h>
35#include <linux/timer.h>
36#include <linux/workqueue.h>
37#include <linux/io.h>
38#include <linux/netdevice.h>
39
40#include "hw.h"
41
42struct e1000_info;
43
44#define ndev_printk(level, netdev, format, arg...) \
45 printk(level "%s: %s: " format, (netdev)->dev.parent->bus_id, \
46 (netdev)->name, ## arg)
47
48#ifdef DEBUG
49#define ndev_dbg(netdev, format, arg...) \
50 ndev_printk(KERN_DEBUG , netdev, format, ## arg)
51#else
52#define ndev_dbg(netdev, format, arg...) do { (void)(netdev); } while (0)
53#endif
54
55#define ndev_err(netdev, format, arg...) \
56 ndev_printk(KERN_ERR , netdev, format, ## arg)
57#define ndev_info(netdev, format, arg...) \
58 ndev_printk(KERN_INFO , netdev, format, ## arg)
59#define ndev_warn(netdev, format, arg...) \
60 ndev_printk(KERN_WARNING , netdev, format, ## arg)
61#define ndev_notice(netdev, format, arg...) \
62 ndev_printk(KERN_NOTICE , netdev, format, ## arg)
63
64
65/* TX/RX descriptor defines */
66#define E1000_DEFAULT_TXD 256
67#define E1000_MAX_TXD 4096
68#define E1000_MIN_TXD 80
69
70#define E1000_DEFAULT_RXD 256
71#define E1000_MAX_RXD 4096
72#define E1000_MIN_RXD 80
73
74/* Early Receive defines */
75#define E1000_ERT_2048 0x100
76
77#define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */
78
79/* How many Tx Descriptors do we need to call netif_wake_queue ? */
80/* How many Rx Buffers do we bundle into one write to the hardware ? */
81#define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */
82
83#define AUTO_ALL_MODES 0
84#define E1000_EEPROM_APME 0x0400
85
86#define E1000_MNG_VLAN_NONE (-1)
87
88/* Number of packet split data buffers (not including the header buffer) */
89#define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1)
90
91enum e1000_boards {
92 board_82571,
93 board_82572,
94 board_82573,
95 board_80003es2lan,
96 board_ich8lan,
97 board_ich9lan,
98};
99
100struct e1000_queue_stats {
101 u64 packets;
102 u64 bytes;
103};
104
105struct e1000_ps_page {
106 struct page *page;
107 u64 dma; /* must be u64 - written to hw */
108};
109
110/*
111 * wrappers around a pointer to a socket buffer,
112 * so a DMA handle can be stored along with the buffer
113 */
114struct e1000_buffer {
115 dma_addr_t dma;
116 struct sk_buff *skb;
117 union {
118 /* TX */
119 struct {
120 unsigned long time_stamp;
121 u16 length;
122 u16 next_to_watch;
123 };
124 /* RX */
125 struct page *page;
126 };
127
128};
129
130struct e1000_ring {
131 void *desc; /* pointer to ring memory */
132 dma_addr_t dma; /* phys address of ring */
133 unsigned int size; /* length of ring in bytes */
134 unsigned int count; /* number of desc. in ring */
135
136 u16 next_to_use;
137 u16 next_to_clean;
138
139 u16 head;
140 u16 tail;
141
142 /* array of buffer information structs */
143 struct e1000_buffer *buffer_info;
144
145 /* arrays of page information for packet split */
146 struct e1000_ps_page *ps_pages;
147 struct sk_buff *rx_skb_top;
148
149 struct e1000_queue_stats stats;
150};
151
152/* board specific private data structure */
153struct e1000_adapter {
154 struct timer_list watchdog_timer;
155 struct timer_list phy_info_timer;
156 struct timer_list blink_timer;
157
158 struct work_struct reset_task;
159 struct work_struct watchdog_task;
160
161 const struct e1000_info *ei;
162
163 struct vlan_group *vlgrp;
164 u32 bd_number;
165 u32 rx_buffer_len;
166 u16 mng_vlan_id;
167 u16 link_speed;
168 u16 link_duplex;
169
170 spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
171
172 /* this is still needed for 82571 and above */
173 atomic_t irq_sem;
174
175 /* track device up/down/testing state */
176 unsigned long state;
177
178 /* Interrupt Throttle Rate */
179 u32 itr;
180 u32 itr_setting;
181 u16 tx_itr;
182 u16 rx_itr;
183
184 /*
185 * TX
186 */
187 struct e1000_ring *tx_ring /* One per active queue */
188 ____cacheline_aligned_in_smp;
189
190 struct napi_struct napi;
191
192 unsigned long tx_queue_len;
193 unsigned int restart_queue;
194 u32 txd_cmd;
195
196 bool detect_tx_hung;
197 u8 tx_timeout_factor;
198
199 u32 tx_int_delay;
200 u32 tx_abs_int_delay;
201
202 unsigned int total_tx_bytes;
203 unsigned int total_tx_packets;
204 unsigned int total_rx_bytes;
205 unsigned int total_rx_packets;
206
207 /* TX stats */
208 u64 tpt_old;
209 u64 colc_old;
210 u64 gotcl_old;
211 u32 gotcl;
212 u32 tx_timeout_count;
213 u32 tx_fifo_head;
214 u32 tx_head_addr;
215 u32 tx_fifo_size;
216 u32 tx_dma_failed;
217
218 /*
219 * RX
220 */
221 bool (*clean_rx) (struct e1000_adapter *adapter,
222 int *work_done, int work_to_do)
223 ____cacheline_aligned_in_smp;
224 void (*alloc_rx_buf) (struct e1000_adapter *adapter,
225 int cleaned_count);
226 struct e1000_ring *rx_ring;
227
228 u32 rx_int_delay;
229 u32 rx_abs_int_delay;
230
231 /* RX stats */
232 u64 hw_csum_err;
233 u64 hw_csum_good;
234 u64 rx_hdr_split;
235 u64 gorcl_old;
236 u32 gorcl;
237 u32 alloc_rx_buff_failed;
238 u32 rx_dma_failed;
239
240 unsigned int rx_ps_pages;
241 u16 rx_ps_bsize0;
242
243 /* OS defined structs */
244 struct net_device *netdev;
245 struct pci_dev *pdev;
246 struct net_device_stats net_stats;
247 spinlock_t stats_lock; /* prevent concurrent stats updates */
248
249 /* structs defined in e1000_hw.h */
250 struct e1000_hw hw;
251
252 struct e1000_hw_stats stats;
253 struct e1000_phy_info phy_info;
254 struct e1000_phy_stats phy_stats;
255
256 struct e1000_ring test_tx_ring;
257 struct e1000_ring test_rx_ring;
258 u32 test_icr;
259
260 u32 msg_enable;
261
262 u32 eeprom_wol;
263 u32 wol;
264 u32 pba;
265
266 u8 fc_autoneg;
267
268 unsigned long led_status;
269
270 unsigned int flags;
271};
272
273struct e1000_info {
274 enum e1000_mac_type mac;
275 unsigned int flags;
276 u32 pba;
277 s32 (*get_invariants)(struct e1000_adapter *);
278 struct e1000_mac_operations *mac_ops;
279 struct e1000_phy_operations *phy_ops;
280 struct e1000_nvm_operations *nvm_ops;
281};
282
283/* hardware capability, feature, and workaround flags */
284#define FLAG_HAS_AMT (1 << 0)
285#define FLAG_HAS_FLASH (1 << 1)
286#define FLAG_HAS_HW_VLAN_FILTER (1 << 2)
287#define FLAG_HAS_WOL (1 << 3)
288#define FLAG_HAS_ERT (1 << 4)
289#define FLAG_HAS_CTRLEXT_ON_LOAD (1 << 5)
290#define FLAG_HAS_SWSM_ON_LOAD (1 << 6)
291#define FLAG_HAS_JUMBO_FRAMES (1 << 7)
292#define FLAG_HAS_ASPM (1 << 8)
293#define FLAG_HAS_STATS_ICR_ICT (1 << 9)
294#define FLAG_HAS_STATS_PTC_PRC (1 << 10)
295#define FLAG_HAS_SMART_POWER_DOWN (1 << 11)
296#define FLAG_IS_QUAD_PORT_A (1 << 12)
297#define FLAG_IS_QUAD_PORT (1 << 13)
298#define FLAG_TIPG_MEDIUM_FOR_80003ESLAN (1 << 14)
299#define FLAG_APME_IN_WUC (1 << 15)
300#define FLAG_APME_IN_CTRL3 (1 << 16)
301#define FLAG_APME_CHECK_PORT_B (1 << 17)
302#define FLAG_DISABLE_FC_PAUSE_TIME (1 << 18)
303#define FLAG_NO_WAKE_UCAST (1 << 19)
304#define FLAG_MNG_PT_ENABLED (1 << 20)
305#define FLAG_RESET_OVERWRITES_LAA (1 << 21)
306#define FLAG_TARC_SPEED_MODE_BIT (1 << 22)
307#define FLAG_TARC_SET_BIT_ZERO (1 << 23)
308#define FLAG_RX_NEEDS_RESTART (1 << 24)
309#define FLAG_LSC_GIG_SPEED_DROP (1 << 25)
310#define FLAG_SMART_POWER_DOWN (1 << 26)
311#define FLAG_MSI_ENABLED (1 << 27)
312#define FLAG_RX_CSUM_ENABLED (1 << 28)
313#define FLAG_TSO_FORCE (1 << 29)
314
315#define E1000_RX_DESC_PS(R, i) \
316 (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
317#define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
318#define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
319#define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
320#define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc)
321
322enum e1000_state_t {
323 __E1000_TESTING,
324 __E1000_RESETTING,
325 __E1000_DOWN
326};
327
328enum latency_range {
329 lowest_latency = 0,
330 low_latency = 1,
331 bulk_latency = 2,
332 latency_invalid = 255
333};
334
335extern char e1000e_driver_name[];
336extern const char e1000e_driver_version[];
337
338extern void e1000e_check_options(struct e1000_adapter *adapter);
339extern void e1000e_set_ethtool_ops(struct net_device *netdev);
340
341extern int e1000e_up(struct e1000_adapter *adapter);
342extern void e1000e_down(struct e1000_adapter *adapter);
343extern void e1000e_reinit_locked(struct e1000_adapter *adapter);
344extern void e1000e_reset(struct e1000_adapter *adapter);
345extern void e1000e_power_up_phy(struct e1000_adapter *adapter);
346extern int e1000e_setup_rx_resources(struct e1000_adapter *adapter);
347extern int e1000e_setup_tx_resources(struct e1000_adapter *adapter);
348extern void e1000e_free_rx_resources(struct e1000_adapter *adapter);
349extern void e1000e_free_tx_resources(struct e1000_adapter *adapter);
350extern void e1000e_update_stats(struct e1000_adapter *adapter);
351
352extern unsigned int copybreak;
353
354extern char *e1000e_get_hw_dev_name(struct e1000_hw *hw);
355
356extern struct e1000_info e1000_82571_info;
357extern struct e1000_info e1000_82572_info;
358extern struct e1000_info e1000_82573_info;
359extern struct e1000_info e1000_ich8_info;
360extern struct e1000_info e1000_ich9_info;
361extern struct e1000_info e1000_es2_info;
362
363extern s32 e1000e_read_part_num(struct e1000_hw *hw, u32 *part_num);
364
365extern s32 e1000e_commit_phy(struct e1000_hw *hw);
366
367extern bool e1000e_enable_mng_pass_thru(struct e1000_hw *hw);
368
369extern bool e1000e_get_laa_state_82571(struct e1000_hw *hw);
370extern void e1000e_set_laa_state_82571(struct e1000_hw *hw, bool state);
371
372extern void e1000e_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,
373 bool state);
374extern void e1000e_igp3_phy_powerdown_workaround_ich8lan(struct e1000_hw *hw);
375extern void e1000e_gig_downshift_workaround_ich8lan(struct e1000_hw *hw);
376
377extern s32 e1000e_check_for_copper_link(struct e1000_hw *hw);
378extern s32 e1000e_check_for_fiber_link(struct e1000_hw *hw);
379extern s32 e1000e_check_for_serdes_link(struct e1000_hw *hw);
380extern s32 e1000e_cleanup_led_generic(struct e1000_hw *hw);
381extern s32 e1000e_led_on_generic(struct e1000_hw *hw);
382extern s32 e1000e_led_off_generic(struct e1000_hw *hw);
383extern s32 e1000e_get_bus_info_pcie(struct e1000_hw *hw);
384extern s32 e1000e_get_speed_and_duplex_copper(struct e1000_hw *hw, u16 *speed, u16 *duplex);
385extern s32 e1000e_get_speed_and_duplex_fiber_serdes(struct e1000_hw *hw, u16 *speed, u16 *duplex);
386extern s32 e1000e_disable_pcie_master(struct e1000_hw *hw);
387extern s32 e1000e_get_auto_rd_done(struct e1000_hw *hw);
388extern s32 e1000e_id_led_init(struct e1000_hw *hw);
389extern void e1000e_clear_hw_cntrs_base(struct e1000_hw *hw);
390extern s32 e1000e_setup_fiber_serdes_link(struct e1000_hw *hw);
391extern s32 e1000e_copper_link_setup_m88(struct e1000_hw *hw);
392extern s32 e1000e_copper_link_setup_igp(struct e1000_hw *hw);
393extern s32 e1000e_setup_link(struct e1000_hw *hw);
394extern void e1000e_clear_vfta(struct e1000_hw *hw);
395extern void e1000e_init_rx_addrs(struct e1000_hw *hw, u16 rar_count);
396extern void e1000e_mc_addr_list_update_generic(struct e1000_hw *hw,
397 u8 *mc_addr_list, u32 mc_addr_count,
398 u32 rar_used_count, u32 rar_count);
399extern void e1000e_rar_set(struct e1000_hw *hw, u8 *addr, u32 index);
400extern s32 e1000e_set_fc_watermarks(struct e1000_hw *hw);
401extern void e1000e_set_pcie_no_snoop(struct e1000_hw *hw, u32 no_snoop);
402extern s32 e1000e_get_hw_semaphore(struct e1000_hw *hw);
403extern s32 e1000e_valid_led_default(struct e1000_hw *hw, u16 *data);
404extern void e1000e_config_collision_dist(struct e1000_hw *hw);
405extern s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw);
406extern s32 e1000e_force_mac_fc(struct e1000_hw *hw);
407extern s32 e1000e_blink_led(struct e1000_hw *hw);
408extern void e1000e_write_vfta(struct e1000_hw *hw, u32 offset, u32 value);
409extern void e1000e_reset_adaptive(struct e1000_hw *hw);
410extern void e1000e_update_adaptive(struct e1000_hw *hw);
411
412extern s32 e1000e_setup_copper_link(struct e1000_hw *hw);
413extern s32 e1000e_get_phy_id(struct e1000_hw *hw);
414extern void e1000e_put_hw_semaphore(struct e1000_hw *hw);
415extern s32 e1000e_check_reset_block_generic(struct e1000_hw *hw);
416extern s32 e1000e_phy_force_speed_duplex_igp(struct e1000_hw *hw);
417extern s32 e1000e_get_cable_length_igp_2(struct e1000_hw *hw);
418extern s32 e1000e_get_phy_info_igp(struct e1000_hw *hw);
419extern s32 e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data);
420extern s32 e1000e_phy_hw_reset_generic(struct e1000_hw *hw);
421extern s32 e1000e_set_d3_lplu_state(struct e1000_hw *hw, bool active);
422extern s32 e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data);
423extern s32 e1000e_phy_sw_reset(struct e1000_hw *hw);
424extern s32 e1000e_phy_force_speed_duplex_m88(struct e1000_hw *hw);
425extern s32 e1000e_get_cfg_done(struct e1000_hw *hw);
426extern s32 e1000e_get_cable_length_m88(struct e1000_hw *hw);
427extern s32 e1000e_get_phy_info_m88(struct e1000_hw *hw);
428extern s32 e1000e_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data);
429extern s32 e1000e_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data);
430extern enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id);
431extern void e1000e_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl);
432extern s32 e1000e_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data);
433extern s32 e1000e_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data);
434extern s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
435 u32 usec_interval, bool *success);
436extern s32 e1000e_phy_reset_dsp(struct e1000_hw *hw);
437extern s32 e1000e_check_downshift(struct e1000_hw *hw);
438
439static inline s32 e1000_phy_hw_reset(struct e1000_hw *hw)
440{
441 return hw->phy.ops.reset_phy(hw);
442}
443
444static inline s32 e1000_check_reset_block(struct e1000_hw *hw)
445{
446 return hw->phy.ops.check_reset_block(hw);
447}
448
449static inline s32 e1e_rphy(struct e1000_hw *hw, u32 offset, u16 *data)
450{
451 return hw->phy.ops.read_phy_reg(hw, offset, data);
452}
453
454static inline s32 e1e_wphy(struct e1000_hw *hw, u32 offset, u16 data)
455{
456 return hw->phy.ops.write_phy_reg(hw, offset, data);
457}
458
459static inline s32 e1000_get_cable_length(struct e1000_hw *hw)
460{
461 return hw->phy.ops.get_cable_length(hw);
462}
463
464extern s32 e1000e_acquire_nvm(struct e1000_hw *hw);
465extern s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
466extern s32 e1000e_update_nvm_checksum_generic(struct e1000_hw *hw);
467extern s32 e1000e_poll_eerd_eewr_done(struct e1000_hw *hw, int ee_reg);
468extern s32 e1000e_read_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
469extern s32 e1000e_read_nvm_eerd(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
470extern s32 e1000e_validate_nvm_checksum_generic(struct e1000_hw *hw);
471extern void e1000e_release_nvm(struct e1000_hw *hw);
472extern void e1000e_reload_nvm(struct e1000_hw *hw);
473extern s32 e1000e_read_mac_addr(struct e1000_hw *hw);
474
475static inline s32 e1000_validate_nvm_checksum(struct e1000_hw *hw)
476{
477 return hw->nvm.ops.validate_nvm(hw);
478}
479
480static inline s32 e1000e_update_nvm_checksum(struct e1000_hw *hw)
481{
482 return hw->nvm.ops.update_nvm(hw);
483}
484
485static inline s32 e1000_read_nvm(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
486{
487 return hw->nvm.ops.read_nvm(hw, offset, words, data);
488}
489
490static inline s32 e1000_write_nvm(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
491{
492 return hw->nvm.ops.write_nvm(hw, offset, words, data);
493}
494
495static inline s32 e1000_get_phy_info(struct e1000_hw *hw)
496{
497 return hw->phy.ops.get_phy_info(hw);
498}
499
500extern bool e1000e_check_mng_mode(struct e1000_hw *hw);
501extern bool e1000e_enable_tx_pkt_filtering(struct e1000_hw *hw);
502extern s32 e1000e_mng_write_dhcp_info(struct e1000_hw *hw, u8 *buffer, u16 length);
503
504static inline u32 __er32(struct e1000_hw *hw, unsigned long reg)
505{
506 return readl(hw->hw_addr + reg);
507}
508
509static inline void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val)
510{
511 writel(val, hw->hw_addr + reg);
512}
513
514#endif /* _E1000_H_ */
diff --git a/drivers/net/e1000e/es2lan.c b/drivers/net/e1000e/es2lan.c
new file mode 100644
index 000000000000..88657adf965f
--- /dev/null
+++ b/drivers/net/e1000e/es2lan.c
@@ -0,0 +1,1232 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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 * 80003ES2LAN Gigabit Ethernet Controller (Copper)
31 * 80003ES2LAN Gigabit Ethernet Controller (Serdes)
32 */
33
34#include <linux/netdevice.h>
35#include <linux/ethtool.h>
36#include <linux/delay.h>
37#include <linux/pci.h>
38
39#include "e1000.h"
40
41#define E1000_KMRNCTRLSTA_OFFSET_FIFO_CTRL 0x00
42#define E1000_KMRNCTRLSTA_OFFSET_INB_CTRL 0x02
43#define E1000_KMRNCTRLSTA_OFFSET_HD_CTRL 0x10
44
45#define E1000_KMRNCTRLSTA_FIFO_CTRL_RX_BYPASS 0x0008
46#define E1000_KMRNCTRLSTA_FIFO_CTRL_TX_BYPASS 0x0800
47#define E1000_KMRNCTRLSTA_INB_CTRL_DIS_PADDING 0x0010
48
49#define E1000_KMRNCTRLSTA_HD_CTRL_10_100_DEFAULT 0x0004
50#define E1000_KMRNCTRLSTA_HD_CTRL_1000_DEFAULT 0x0000
51
52#define E1000_TCTL_EXT_GCEX_MASK 0x000FFC00 /* Gigabit Carry Extend Padding */
53#define DEFAULT_TCTL_EXT_GCEX_80003ES2LAN 0x00010000
54
55#define DEFAULT_TIPG_IPGT_1000_80003ES2LAN 0x8
56#define DEFAULT_TIPG_IPGT_10_100_80003ES2LAN 0x9
57
58/* GG82563 PHY Specific Status Register (Page 0, Register 16 */
59#define GG82563_PSCR_POLARITY_REVERSAL_DISABLE 0x0002 /* 1=Reversal Disab. */
60#define GG82563_PSCR_CROSSOVER_MODE_MASK 0x0060
61#define GG82563_PSCR_CROSSOVER_MODE_MDI 0x0000 /* 00=Manual MDI */
62#define GG82563_PSCR_CROSSOVER_MODE_MDIX 0x0020 /* 01=Manual MDIX */
63#define GG82563_PSCR_CROSSOVER_MODE_AUTO 0x0060 /* 11=Auto crossover */
64
65/* PHY Specific Control Register 2 (Page 0, Register 26) */
66#define GG82563_PSCR2_REVERSE_AUTO_NEG 0x2000
67 /* 1=Reverse Auto-Negotiation */
68
69/* MAC Specific Control Register (Page 2, Register 21) */
70/* Tx clock speed for Link Down and 1000BASE-T for the following speeds */
71#define GG82563_MSCR_TX_CLK_MASK 0x0007
72#define GG82563_MSCR_TX_CLK_10MBPS_2_5 0x0004
73#define GG82563_MSCR_TX_CLK_100MBPS_25 0x0005
74#define GG82563_MSCR_TX_CLK_1000MBPS_25 0x0007
75
76#define GG82563_MSCR_ASSERT_CRS_ON_TX 0x0010 /* 1=Assert */
77
78/* DSP Distance Register (Page 5, Register 26) */
79#define GG82563_DSPD_CABLE_LENGTH 0x0007 /* 0 = <50M
80 1 = 50-80M
81 2 = 80-110M
82 3 = 110-140M
83 4 = >140M */
84
85/* Kumeran Mode Control Register (Page 193, Register 16) */
86#define GG82563_KMCR_PASS_FALSE_CARRIER 0x0800
87
88/* Power Management Control Register (Page 193, Register 20) */
89#define GG82563_PMCR_ENABLE_ELECTRICAL_IDLE 0x0001
90 /* 1=Enable SERDES Electrical Idle */
91
92/* In-Band Control Register (Page 194, Register 18) */
93#define GG82563_ICR_DIS_PADDING 0x0010 /* Disable Padding */
94
95/* A table for the GG82563 cable length where the range is defined
96 * with a lower bound at "index" and the upper bound at
97 * "index + 5".
98 */
99static const u16 e1000_gg82563_cable_length_table[] =
100 { 0, 60, 115, 150, 150, 60, 115, 150, 180, 180, 0xFF };
101
102static s32 e1000_setup_copper_link_80003es2lan(struct e1000_hw *hw);
103static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);
104static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask);
105static void e1000_initialize_hw_bits_80003es2lan(struct e1000_hw *hw);
106static void e1000_clear_hw_cntrs_80003es2lan(struct e1000_hw *hw);
107static s32 e1000_cfg_kmrn_1000_80003es2lan(struct e1000_hw *hw);
108static s32 e1000_cfg_kmrn_10_100_80003es2lan(struct e1000_hw *hw, u16 duplex);
109
110/**
111 * e1000_init_phy_params_80003es2lan - Init ESB2 PHY func ptrs.
112 * @hw: pointer to the HW structure
113 *
114 * This is a function pointer entry point called by the api module.
115 **/
116static s32 e1000_init_phy_params_80003es2lan(struct e1000_hw *hw)
117{
118 struct e1000_phy_info *phy = &hw->phy;
119 s32 ret_val;
120
121 if (hw->media_type != e1000_media_type_copper) {
122 phy->type = e1000_phy_none;
123 return 0;
124 }
125
126 phy->addr = 1;
127 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
128 phy->reset_delay_us = 100;
129 phy->type = e1000_phy_gg82563;
130
131 /* This can only be done after all function pointers are setup. */
132 ret_val = e1000e_get_phy_id(hw);
133
134 /* Verify phy id */
135 if (phy->id != GG82563_E_PHY_ID)
136 return -E1000_ERR_PHY;
137
138 return ret_val;
139}
140
141/**
142 * e1000_init_nvm_params_80003es2lan - Init ESB2 NVM func ptrs.
143 * @hw: pointer to the HW structure
144 *
145 * This is a function pointer entry point called by the api module.
146 **/
147static s32 e1000_init_nvm_params_80003es2lan(struct e1000_hw *hw)
148{
149 struct e1000_nvm_info *nvm = &hw->nvm;
150 u32 eecd = er32(EECD);
151 u16 size;
152
153 nvm->opcode_bits = 8;
154 nvm->delay_usec = 1;
155 switch (nvm->override) {
156 case e1000_nvm_override_spi_large:
157 nvm->page_size = 32;
158 nvm->address_bits = 16;
159 break;
160 case e1000_nvm_override_spi_small:
161 nvm->page_size = 8;
162 nvm->address_bits = 8;
163 break;
164 default:
165 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
166 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
167 break;
168 }
169
170 nvm->type = e1000_nvm_eeprom_spi;
171
172 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
173 E1000_EECD_SIZE_EX_SHIFT);
174
175 /* Added to a constant, "size" becomes the left-shift value
176 * for setting word_size.
177 */
178 size += NVM_WORD_SIZE_BASE_SHIFT;
179 nvm->word_size = 1 << size;
180
181 return 0;
182}
183
184/**
185 * e1000_init_mac_params_80003es2lan - Init ESB2 MAC func ptrs.
186 * @hw: pointer to the HW structure
187 *
188 * This is a function pointer entry point called by the api module.
189 **/
190static s32 e1000_init_mac_params_80003es2lan(struct e1000_adapter *adapter)
191{
192 struct e1000_hw *hw = &adapter->hw;
193 struct e1000_mac_info *mac = &hw->mac;
194 struct e1000_mac_operations *func = &mac->ops;
195
196 /* Set media type */
197 switch (adapter->pdev->device) {
198 case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
199 hw->media_type = e1000_media_type_internal_serdes;
200 break;
201 default:
202 hw->media_type = e1000_media_type_copper;
203 break;
204 }
205
206 /* Set mta register count */
207 mac->mta_reg_count = 128;
208 /* Set rar entry count */
209 mac->rar_entry_count = E1000_RAR_ENTRIES;
210 /* Set if manageability features are enabled. */
211 mac->arc_subsystem_valid =
212 (er32(FWSM) & E1000_FWSM_MODE_MASK) ? 1 : 0;
213
214 /* check for link */
215 switch (hw->media_type) {
216 case e1000_media_type_copper:
217 func->setup_physical_interface = e1000_setup_copper_link_80003es2lan;
218 func->check_for_link = e1000e_check_for_copper_link;
219 break;
220 case e1000_media_type_fiber:
221 func->setup_physical_interface = e1000e_setup_fiber_serdes_link;
222 func->check_for_link = e1000e_check_for_fiber_link;
223 break;
224 case e1000_media_type_internal_serdes:
225 func->setup_physical_interface = e1000e_setup_fiber_serdes_link;
226 func->check_for_link = e1000e_check_for_serdes_link;
227 break;
228 default:
229 return -E1000_ERR_CONFIG;
230 break;
231 }
232
233 return 0;
234}
235
236static s32 e1000_get_invariants_80003es2lan(struct e1000_adapter *adapter)
237{
238 struct e1000_hw *hw = &adapter->hw;
239 s32 rc;
240
241 rc = e1000_init_mac_params_80003es2lan(adapter);
242 if (rc)
243 return rc;
244
245 rc = e1000_init_nvm_params_80003es2lan(hw);
246 if (rc)
247 return rc;
248
249 rc = e1000_init_phy_params_80003es2lan(hw);
250 if (rc)
251 return rc;
252
253 return 0;
254}
255
256/**
257 * e1000_acquire_phy_80003es2lan - Acquire rights to access PHY
258 * @hw: pointer to the HW structure
259 *
260 * A wrapper to acquire access rights to the correct PHY. This is a
261 * function pointer entry point called by the api module.
262 **/
263static s32 e1000_acquire_phy_80003es2lan(struct e1000_hw *hw)
264{
265 u16 mask;
266
267 mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;
268
269 return e1000_acquire_swfw_sync_80003es2lan(hw, mask);
270}
271
272/**
273 * e1000_release_phy_80003es2lan - Release rights to access PHY
274 * @hw: pointer to the HW structure
275 *
276 * A wrapper to release access rights to the correct PHY. This is a
277 * function pointer entry point called by the api module.
278 **/
279static void e1000_release_phy_80003es2lan(struct e1000_hw *hw)
280{
281 u16 mask;
282
283 mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;
284 e1000_release_swfw_sync_80003es2lan(hw, mask);
285}
286
287/**
288 * e1000_acquire_nvm_80003es2lan - Acquire rights to access NVM
289 * @hw: pointer to the HW structure
290 *
291 * Acquire the semaphore to access the EEPROM. This is a function
292 * pointer entry point called by the api module.
293 **/
294static s32 e1000_acquire_nvm_80003es2lan(struct e1000_hw *hw)
295{
296 s32 ret_val;
297
298 ret_val = e1000_acquire_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);
299 if (ret_val)
300 return ret_val;
301
302 ret_val = e1000e_acquire_nvm(hw);
303
304 if (ret_val)
305 e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);
306
307 return ret_val;
308}
309
310/**
311 * e1000_release_nvm_80003es2lan - Relinquish rights to access NVM
312 * @hw: pointer to the HW structure
313 *
314 * Release the semaphore used to access the EEPROM. This is a
315 * function pointer entry point called by the api module.
316 **/
317static void e1000_release_nvm_80003es2lan(struct e1000_hw *hw)
318{
319 e1000e_release_nvm(hw);
320 e1000_release_swfw_sync_80003es2lan(hw, E1000_SWFW_EEP_SM);
321}
322
323/**
324 * e1000_acquire_swfw_sync_80003es2lan - Acquire SW/FW semaphore
325 * @hw: pointer to the HW structure
326 * @mask: specifies which semaphore to acquire
327 *
328 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask
329 * will also specify which port we're acquiring the lock for.
330 **/
331static s32 e1000_acquire_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)
332{
333 u32 swfw_sync;
334 u32 swmask = mask;
335 u32 fwmask = mask << 16;
336 s32 i = 0;
337 s32 timeout = 200;
338
339 while (i < timeout) {
340 if (e1000e_get_hw_semaphore(hw))
341 return -E1000_ERR_SWFW_SYNC;
342
343 swfw_sync = er32(SW_FW_SYNC);
344 if (!(swfw_sync & (fwmask | swmask)))
345 break;
346
347 /* Firmware currently using resource (fwmask)
348 * or other software thread using resource (swmask) */
349 e1000e_put_hw_semaphore(hw);
350 mdelay(5);
351 i++;
352 }
353
354 if (i == timeout) {
355 hw_dbg(hw,
356 "Driver can't access resource, SW_FW_SYNC timeout.\n");
357 return -E1000_ERR_SWFW_SYNC;
358 }
359
360 swfw_sync |= swmask;
361 ew32(SW_FW_SYNC, swfw_sync);
362
363 e1000e_put_hw_semaphore(hw);
364
365 return 0;
366}
367
368/**
369 * e1000_release_swfw_sync_80003es2lan - Release SW/FW semaphore
370 * @hw: pointer to the HW structure
371 * @mask: specifies which semaphore to acquire
372 *
373 * Release the SW/FW semaphore used to access the PHY or NVM. The mask
374 * will also specify which port we're releasing the lock for.
375 **/
376static void e1000_release_swfw_sync_80003es2lan(struct e1000_hw *hw, u16 mask)
377{
378 u32 swfw_sync;
379
380 while (e1000e_get_hw_semaphore(hw) != 0);
381 /* Empty */
382
383 swfw_sync = er32(SW_FW_SYNC);
384 swfw_sync &= ~mask;
385 ew32(SW_FW_SYNC, swfw_sync);
386
387 e1000e_put_hw_semaphore(hw);
388}
389
390/**
391 * e1000_read_phy_reg_gg82563_80003es2lan - Read GG82563 PHY register
392 * @hw: pointer to the HW structure
393 * @offset: offset of the register to read
394 * @data: pointer to the data returned from the operation
395 *
396 * Read the GG82563 PHY register. This is a function pointer entry
397 * point called by the api module.
398 **/
399static s32 e1000_read_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,
400 u32 offset, u16 *data)
401{
402 s32 ret_val;
403 u32 page_select;
404 u16 temp;
405
406 /* Select Configuration Page */
407 if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG)
408 page_select = GG82563_PHY_PAGE_SELECT;
409 else
410 /* Use Alternative Page Select register to access
411 * registers 30 and 31
412 */
413 page_select = GG82563_PHY_PAGE_SELECT_ALT;
414
415 temp = (u16)((u16)offset >> GG82563_PAGE_SHIFT);
416 ret_val = e1000e_write_phy_reg_m88(hw, page_select, temp);
417 if (ret_val)
418 return ret_val;
419
420 /* The "ready" bit in the MDIC register may be incorrectly set
421 * before the device has completed the "Page Select" MDI
422 * transaction. So we wait 200us after each MDI command...
423 */
424 udelay(200);
425
426 /* ...and verify the command was successful. */
427 ret_val = e1000e_read_phy_reg_m88(hw, page_select, &temp);
428
429 if (((u16)offset >> GG82563_PAGE_SHIFT) != temp) {
430 ret_val = -E1000_ERR_PHY;
431 return ret_val;
432 }
433
434 udelay(200);
435
436 ret_val = e1000e_read_phy_reg_m88(hw,
437 MAX_PHY_REG_ADDRESS & offset,
438 data);
439
440 udelay(200);
441
442 return ret_val;
443}
444
445/**
446 * e1000_write_phy_reg_gg82563_80003es2lan - Write GG82563 PHY register
447 * @hw: pointer to the HW structure
448 * @offset: offset of the register to read
449 * @data: value to write to the register
450 *
451 * Write to the GG82563 PHY register. This is a function pointer entry
452 * point called by the api module.
453 **/
454static s32 e1000_write_phy_reg_gg82563_80003es2lan(struct e1000_hw *hw,
455 u32 offset, u16 data)
456{
457 s32 ret_val;
458 u32 page_select;
459 u16 temp;
460
461 /* Select Configuration Page */
462 if ((offset & MAX_PHY_REG_ADDRESS) < GG82563_MIN_ALT_REG)
463 page_select = GG82563_PHY_PAGE_SELECT;
464 else
465 /* Use Alternative Page Select register to access
466 * registers 30 and 31
467 */
468 page_select = GG82563_PHY_PAGE_SELECT_ALT;
469
470 temp = (u16)((u16)offset >> GG82563_PAGE_SHIFT);
471 ret_val = e1000e_write_phy_reg_m88(hw, page_select, temp);
472 if (ret_val)
473 return ret_val;
474
475
476 /* The "ready" bit in the MDIC register may be incorrectly set
477 * before the device has completed the "Page Select" MDI
478 * transaction. So we wait 200us after each MDI command...
479 */
480 udelay(200);
481
482 /* ...and verify the command was successful. */
483 ret_val = e1000e_read_phy_reg_m88(hw, page_select, &temp);
484
485 if (((u16)offset >> GG82563_PAGE_SHIFT) != temp)
486 return -E1000_ERR_PHY;
487
488 udelay(200);
489
490 ret_val = e1000e_write_phy_reg_m88(hw,
491 MAX_PHY_REG_ADDRESS & offset,
492 data);
493
494 udelay(200);
495
496 return ret_val;
497}
498
499/**
500 * e1000_write_nvm_80003es2lan - Write to ESB2 NVM
501 * @hw: pointer to the HW structure
502 * @offset: offset of the register to read
503 * @words: number of words to write
504 * @data: buffer of data to write to the NVM
505 *
506 * Write "words" of data to the ESB2 NVM. This is a function
507 * pointer entry point called by the api module.
508 **/
509static s32 e1000_write_nvm_80003es2lan(struct e1000_hw *hw, u16 offset,
510 u16 words, u16 *data)
511{
512 return e1000e_write_nvm_spi(hw, offset, words, data);
513}
514
515/**
516 * e1000_get_cfg_done_80003es2lan - Wait for configuration to complete
517 * @hw: pointer to the HW structure
518 *
519 * Wait a specific amount of time for manageability processes to complete.
520 * This is a function pointer entry point called by the phy module.
521 **/
522static s32 e1000_get_cfg_done_80003es2lan(struct e1000_hw *hw)
523{
524 s32 timeout = PHY_CFG_TIMEOUT;
525 u32 mask = E1000_NVM_CFG_DONE_PORT_0;
526
527 if (hw->bus.func == 1)
528 mask = E1000_NVM_CFG_DONE_PORT_1;
529
530 while (timeout) {
531 if (er32(EEMNGCTL) & mask)
532 break;
533 msleep(1);
534 timeout--;
535 }
536 if (!timeout) {
537 hw_dbg(hw, "MNG configuration cycle has not completed.\n");
538 return -E1000_ERR_RESET;
539 }
540
541 return 0;
542}
543
544/**
545 * e1000_phy_force_speed_duplex_80003es2lan - Force PHY speed and duplex
546 * @hw: pointer to the HW structure
547 *
548 * Force the speed and duplex settings onto the PHY. This is a
549 * function pointer entry point called by the phy module.
550 **/
551static s32 e1000_phy_force_speed_duplex_80003es2lan(struct e1000_hw *hw)
552{
553 s32 ret_val;
554 u16 phy_data;
555 bool link;
556
557 /* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI
558 * forced whenever speed and duplex are forced.
559 */
560 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
561 if (ret_val)
562 return ret_val;
563
564 phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_AUTO;
565 ret_val = e1e_wphy(hw, GG82563_PHY_SPEC_CTRL, phy_data);
566 if (ret_val)
567 return ret_val;
568
569 hw_dbg(hw, "GG82563 PSCR: %X\n", phy_data);
570
571 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
572 if (ret_val)
573 return ret_val;
574
575 e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
576
577 /* Reset the phy to commit changes. */
578 phy_data |= MII_CR_RESET;
579
580 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
581 if (ret_val)
582 return ret_val;
583
584 udelay(1);
585
586 if (hw->phy.wait_for_link) {
587 hw_dbg(hw, "Waiting for forced speed/duplex link "
588 "on GG82563 phy.\n");
589
590 ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
591 100000, &link);
592 if (ret_val)
593 return ret_val;
594
595 if (!link) {
596 /* We didn't get link.
597 * Reset the DSP and cross our fingers.
598 */
599 ret_val = e1000e_phy_reset_dsp(hw);
600 if (ret_val)
601 return ret_val;
602 }
603
604 /* Try once more */
605 ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
606 100000, &link);
607 if (ret_val)
608 return ret_val;
609 }
610
611 ret_val = e1e_rphy(hw, GG82563_PHY_MAC_SPEC_CTRL, &phy_data);
612 if (ret_val)
613 return ret_val;
614
615 /* Resetting the phy means we need to verify the TX_CLK corresponds
616 * to the link speed. 10Mbps -> 2.5MHz, else 25MHz.
617 */
618 phy_data &= ~GG82563_MSCR_TX_CLK_MASK;
619 if (hw->mac.forced_speed_duplex & E1000_ALL_10_SPEED)
620 phy_data |= GG82563_MSCR_TX_CLK_10MBPS_2_5;
621 else
622 phy_data |= GG82563_MSCR_TX_CLK_100MBPS_25;
623
624 /* In addition, we must re-enable CRS on Tx for both half and full
625 * duplex.
626 */
627 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
628 ret_val = e1e_wphy(hw, GG82563_PHY_MAC_SPEC_CTRL, phy_data);
629
630 return ret_val;
631}
632
633/**
634 * e1000_get_cable_length_80003es2lan - Set approximate cable length
635 * @hw: pointer to the HW structure
636 *
637 * Find the approximate cable length as measured by the GG82563 PHY.
638 * This is a function pointer entry point called by the phy module.
639 **/
640static s32 e1000_get_cable_length_80003es2lan(struct e1000_hw *hw)
641{
642 struct e1000_phy_info *phy = &hw->phy;
643 s32 ret_val;
644 u16 phy_data;
645 u16 index;
646
647 ret_val = e1e_rphy(hw, GG82563_PHY_DSP_DISTANCE, &phy_data);
648 if (ret_val)
649 return ret_val;
650
651 index = phy_data & GG82563_DSPD_CABLE_LENGTH;
652 phy->min_cable_length = e1000_gg82563_cable_length_table[index];
653 phy->max_cable_length = e1000_gg82563_cable_length_table[index+5];
654
655 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
656
657 return 0;
658}
659
660/**
661 * e1000_get_link_up_info_80003es2lan - Report speed and duplex
662 * @hw: pointer to the HW structure
663 * @speed: pointer to speed buffer
664 * @duplex: pointer to duplex buffer
665 *
666 * Retrieve the current speed and duplex configuration.
667 * This is a function pointer entry point called by the api module.
668 **/
669static s32 e1000_get_link_up_info_80003es2lan(struct e1000_hw *hw, u16 *speed,
670 u16 *duplex)
671{
672 s32 ret_val;
673
674 if (hw->media_type == e1000_media_type_copper) {
675 ret_val = e1000e_get_speed_and_duplex_copper(hw,
676 speed,
677 duplex);
678 if (ret_val)
679 return ret_val;
680 if (*speed == SPEED_1000)
681 ret_val = e1000_cfg_kmrn_1000_80003es2lan(hw);
682 else
683 ret_val = e1000_cfg_kmrn_10_100_80003es2lan(hw,
684 *duplex);
685 } else {
686 ret_val = e1000e_get_speed_and_duplex_fiber_serdes(hw,
687 speed,
688 duplex);
689 }
690
691 return ret_val;
692}
693
694/**
695 * e1000_reset_hw_80003es2lan - Reset the ESB2 controller
696 * @hw: pointer to the HW structure
697 *
698 * Perform a global reset to the ESB2 controller.
699 * This is a function pointer entry point called by the api module.
700 **/
701static s32 e1000_reset_hw_80003es2lan(struct e1000_hw *hw)
702{
703 u32 ctrl;
704 u32 icr;
705 s32 ret_val;
706
707 /* Prevent the PCI-E bus from sticking if there is no TLP connection
708 * on the last TLP read/write transaction when MAC is reset.
709 */
710 ret_val = e1000e_disable_pcie_master(hw);
711 if (ret_val)
712 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
713
714 hw_dbg(hw, "Masking off all interrupts\n");
715 ew32(IMC, 0xffffffff);
716
717 ew32(RCTL, 0);
718 ew32(TCTL, E1000_TCTL_PSP);
719 e1e_flush();
720
721 msleep(10);
722
723 ctrl = er32(CTRL);
724
725 hw_dbg(hw, "Issuing a global reset to MAC\n");
726 ew32(CTRL, ctrl | E1000_CTRL_RST);
727
728 ret_val = e1000e_get_auto_rd_done(hw);
729 if (ret_val)
730 /* We don't want to continue accessing MAC registers. */
731 return ret_val;
732
733 /* Clear any pending interrupt events. */
734 ew32(IMC, 0xffffffff);
735 icr = er32(ICR);
736
737 return 0;
738}
739
740/**
741 * e1000_init_hw_80003es2lan - Initialize the ESB2 controller
742 * @hw: pointer to the HW structure
743 *
744 * Initialize the hw bits, LED, VFTA, MTA, link and hw counters.
745 * This is a function pointer entry point called by the api module.
746 **/
747static s32 e1000_init_hw_80003es2lan(struct e1000_hw *hw)
748{
749 struct e1000_mac_info *mac = &hw->mac;
750 u32 reg_data;
751 s32 ret_val;
752 u16 i;
753
754 e1000_initialize_hw_bits_80003es2lan(hw);
755
756 /* Initialize identification LED */
757 ret_val = e1000e_id_led_init(hw);
758 if (ret_val) {
759 hw_dbg(hw, "Error initializing identification LED\n");
760 return ret_val;
761 }
762
763 /* Disabling VLAN filtering */
764 hw_dbg(hw, "Initializing the IEEE VLAN\n");
765 e1000e_clear_vfta(hw);
766
767 /* Setup the receive address. */
768 e1000e_init_rx_addrs(hw, mac->rar_entry_count);
769
770 /* Zero out the Multicast HASH table */
771 hw_dbg(hw, "Zeroing the MTA\n");
772 for (i = 0; i < mac->mta_reg_count; i++)
773 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
774
775 /* Setup link and flow control */
776 ret_val = e1000e_setup_link(hw);
777
778 /* Set the transmit descriptor write-back policy */
779 reg_data = er32(TXDCTL);
780 reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |
781 E1000_TXDCTL_FULL_TX_DESC_WB | E1000_TXDCTL_COUNT_DESC;
782 ew32(TXDCTL, reg_data);
783
784 /* ...for both queues. */
785 reg_data = er32(TXDCTL1);
786 reg_data = (reg_data & ~E1000_TXDCTL_WTHRESH) |
787 E1000_TXDCTL_FULL_TX_DESC_WB | E1000_TXDCTL_COUNT_DESC;
788 ew32(TXDCTL1, reg_data);
789
790 /* Enable retransmit on late collisions */
791 reg_data = er32(TCTL);
792 reg_data |= E1000_TCTL_RTLC;
793 ew32(TCTL, reg_data);
794
795 /* Configure Gigabit Carry Extend Padding */
796 reg_data = er32(TCTL_EXT);
797 reg_data &= ~E1000_TCTL_EXT_GCEX_MASK;
798 reg_data |= DEFAULT_TCTL_EXT_GCEX_80003ES2LAN;
799 ew32(TCTL_EXT, reg_data);
800
801 /* Configure Transmit Inter-Packet Gap */
802 reg_data = er32(TIPG);
803 reg_data &= ~E1000_TIPG_IPGT_MASK;
804 reg_data |= DEFAULT_TIPG_IPGT_1000_80003ES2LAN;
805 ew32(TIPG, reg_data);
806
807 reg_data = E1000_READ_REG_ARRAY(hw, E1000_FFLT, 0x0001);
808 reg_data &= ~0x00100000;
809 E1000_WRITE_REG_ARRAY(hw, E1000_FFLT, 0x0001, reg_data);
810
811 /* Clear all of the statistics registers (clear on read). It is
812 * important that we do this after we have tried to establish link
813 * because the symbol error count will increment wildly if there
814 * is no link.
815 */
816 e1000_clear_hw_cntrs_80003es2lan(hw);
817
818 return ret_val;
819}
820
821/**
822 * e1000_initialize_hw_bits_80003es2lan - Init hw bits of ESB2
823 * @hw: pointer to the HW structure
824 *
825 * Initializes required hardware-dependent bits needed for normal operation.
826 **/
827static void e1000_initialize_hw_bits_80003es2lan(struct e1000_hw *hw)
828{
829 u32 reg;
830
831 /* Transmit Descriptor Control 0 */
832 reg = er32(TXDCTL);
833 reg |= (1 << 22);
834 ew32(TXDCTL, reg);
835
836 /* Transmit Descriptor Control 1 */
837 reg = er32(TXDCTL1);
838 reg |= (1 << 22);
839 ew32(TXDCTL1, reg);
840
841 /* Transmit Arbitration Control 0 */
842 reg = er32(TARC0);
843 reg &= ~(0xF << 27); /* 30:27 */
844 if (hw->media_type != e1000_media_type_copper)
845 reg &= ~(1 << 20);
846 ew32(TARC0, reg);
847
848 /* Transmit Arbitration Control 1 */
849 reg = er32(TARC1);
850 if (er32(TCTL) & E1000_TCTL_MULR)
851 reg &= ~(1 << 28);
852 else
853 reg |= (1 << 28);
854 ew32(TARC1, reg);
855}
856
857/**
858 * e1000_copper_link_setup_gg82563_80003es2lan - Configure GG82563 Link
859 * @hw: pointer to the HW structure
860 *
861 * Setup some GG82563 PHY registers for obtaining link
862 **/
863static s32 e1000_copper_link_setup_gg82563_80003es2lan(struct e1000_hw *hw)
864{
865 struct e1000_phy_info *phy = &hw->phy;
866 s32 ret_val;
867 u32 ctrl_ext;
868 u16 data;
869
870 ret_val = e1e_rphy(hw, GG82563_PHY_MAC_SPEC_CTRL,
871 &data);
872 if (ret_val)
873 return ret_val;
874
875 data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
876 /* Use 25MHz for both link down and 1000Base-T for Tx clock. */
877 data |= GG82563_MSCR_TX_CLK_1000MBPS_25;
878
879 ret_val = e1e_wphy(hw, GG82563_PHY_MAC_SPEC_CTRL,
880 data);
881 if (ret_val)
882 return ret_val;
883
884 /* Options:
885 * MDI/MDI-X = 0 (default)
886 * 0 - Auto for all speeds
887 * 1 - MDI mode
888 * 2 - MDI-X mode
889 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
890 */
891 ret_val = e1e_rphy(hw, GG82563_PHY_SPEC_CTRL, &data);
892 if (ret_val)
893 return ret_val;
894
895 data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;
896
897 switch (phy->mdix) {
898 case 1:
899 data |= GG82563_PSCR_CROSSOVER_MODE_MDI;
900 break;
901 case 2:
902 data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;
903 break;
904 case 0:
905 default:
906 data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;
907 break;
908 }
909
910 /* Options:
911 * disable_polarity_correction = 0 (default)
912 * Automatic Correction for Reversed Cable Polarity
913 * 0 - Disabled
914 * 1 - Enabled
915 */
916 data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
917 if (phy->disable_polarity_correction)
918 data |= GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
919
920 ret_val = e1e_wphy(hw, GG82563_PHY_SPEC_CTRL, data);
921 if (ret_val)
922 return ret_val;
923
924 /* SW Reset the PHY so all changes take effect */
925 ret_val = e1000e_commit_phy(hw);
926 if (ret_val) {
927 hw_dbg(hw, "Error Resetting the PHY\n");
928 return ret_val;
929 }
930
931 /* Bypass RX and TX FIFO's */
932 ret_val = e1000e_write_kmrn_reg(hw,
933 E1000_KMRNCTRLSTA_OFFSET_FIFO_CTRL,
934 E1000_KMRNCTRLSTA_FIFO_CTRL_RX_BYPASS |
935 E1000_KMRNCTRLSTA_FIFO_CTRL_TX_BYPASS);
936 if (ret_val)
937 return ret_val;
938
939 ret_val = e1e_rphy(hw, GG82563_PHY_SPEC_CTRL_2, &data);
940 if (ret_val)
941 return ret_val;
942
943 data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;
944 ret_val = e1e_wphy(hw, GG82563_PHY_SPEC_CTRL_2, data);
945 if (ret_val)
946 return ret_val;
947
948 ctrl_ext = er32(CTRL_EXT);
949 ctrl_ext &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);
950 ew32(CTRL_EXT, ctrl_ext);
951
952 ret_val = e1e_rphy(hw, GG82563_PHY_PWR_MGMT_CTRL, &data);
953 if (ret_val)
954 return ret_val;
955
956 /* Do not init these registers when the HW is in IAMT mode, since the
957 * firmware will have already initialized them. We only initialize
958 * them if the HW is not in IAMT mode.
959 */
960 if (!e1000e_check_mng_mode(hw)) {
961 /* Enable Electrical Idle on the PHY */
962 data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;
963 ret_val = e1e_wphy(hw, GG82563_PHY_PWR_MGMT_CTRL, data);
964 if (ret_val)
965 return ret_val;
966
967 ret_val = e1e_rphy(hw, GG82563_PHY_KMRN_MODE_CTRL, &data);
968 if (ret_val)
969 return ret_val;
970
971 data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
972 ret_val = e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, data);
973 if (ret_val)
974 return ret_val;
975 }
976
977 /* Workaround: Disable padding in Kumeran interface in the MAC
978 * and in the PHY to avoid CRC errors.
979 */
980 ret_val = e1e_rphy(hw, GG82563_PHY_INBAND_CTRL, &data);
981 if (ret_val)
982 return ret_val;
983
984 data |= GG82563_ICR_DIS_PADDING;
985 ret_val = e1e_wphy(hw, GG82563_PHY_INBAND_CTRL, data);
986 if (ret_val)
987 return ret_val;
988
989 return 0;
990}
991
992/**
993 * e1000_setup_copper_link_80003es2lan - Setup Copper Link for ESB2
994 * @hw: pointer to the HW structure
995 *
996 * Essentially a wrapper for setting up all things "copper" related.
997 * This is a function pointer entry point called by the mac module.
998 **/
999static s32 e1000_setup_copper_link_80003es2lan(struct e1000_hw *hw)
1000{
1001 u32 ctrl;
1002 s32 ret_val;
1003 u16 reg_data;
1004
1005 ctrl = er32(CTRL);
1006 ctrl |= E1000_CTRL_SLU;
1007 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1008 ew32(CTRL, ctrl);
1009
1010 /* Set the mac to wait the maximum time between each
1011 * iteration and increase the max iterations when
1012 * polling the phy; this fixes erroneous timeouts at 10Mbps. */
1013 ret_val = e1000e_write_kmrn_reg(hw, GG82563_REG(0x34, 4), 0xFFFF);
1014 if (ret_val)
1015 return ret_val;
1016 ret_val = e1000e_read_kmrn_reg(hw, GG82563_REG(0x34, 9), &reg_data);
1017 if (ret_val)
1018 return ret_val;
1019 reg_data |= 0x3F;
1020 ret_val = e1000e_write_kmrn_reg(hw, GG82563_REG(0x34, 9), reg_data);
1021 if (ret_val)
1022 return ret_val;
1023 ret_val = e1000e_read_kmrn_reg(hw,
1024 E1000_KMRNCTRLSTA_OFFSET_INB_CTRL,
1025 &reg_data);
1026 if (ret_val)
1027 return ret_val;
1028 reg_data |= E1000_KMRNCTRLSTA_INB_CTRL_DIS_PADDING;
1029 ret_val = e1000e_write_kmrn_reg(hw,
1030 E1000_KMRNCTRLSTA_OFFSET_INB_CTRL,
1031 reg_data);
1032 if (ret_val)
1033 return ret_val;
1034
1035 ret_val = e1000_copper_link_setup_gg82563_80003es2lan(hw);
1036 if (ret_val)
1037 return ret_val;
1038
1039 ret_val = e1000e_setup_copper_link(hw);
1040
1041 return 0;
1042}
1043
1044/**
1045 * e1000_cfg_kmrn_10_100_80003es2lan - Apply "quirks" for 10/100 operation
1046 * @hw: pointer to the HW structure
1047 * @duplex: current duplex setting
1048 *
1049 * Configure the KMRN interface by applying last minute quirks for
1050 * 10/100 operation.
1051 **/
1052static s32 e1000_cfg_kmrn_10_100_80003es2lan(struct e1000_hw *hw, u16 duplex)
1053{
1054 s32 ret_val;
1055 u32 tipg;
1056 u16 reg_data;
1057
1058 reg_data = E1000_KMRNCTRLSTA_HD_CTRL_10_100_DEFAULT;
1059 ret_val = e1000e_write_kmrn_reg(hw,
1060 E1000_KMRNCTRLSTA_OFFSET_HD_CTRL,
1061 reg_data);
1062 if (ret_val)
1063 return ret_val;
1064
1065 /* Configure Transmit Inter-Packet Gap */
1066 tipg = er32(TIPG);
1067 tipg &= ~E1000_TIPG_IPGT_MASK;
1068 tipg |= DEFAULT_TIPG_IPGT_10_100_80003ES2LAN;
1069 ew32(TIPG, tipg);
1070
1071 ret_val = e1e_rphy(hw, GG82563_PHY_KMRN_MODE_CTRL, &reg_data);
1072 if (ret_val)
1073 return ret_val;
1074
1075 if (duplex == HALF_DUPLEX)
1076 reg_data |= GG82563_KMCR_PASS_FALSE_CARRIER;
1077 else
1078 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
1079
1080 ret_val = e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
1081
1082 return 0;
1083}
1084
1085/**
1086 * e1000_cfg_kmrn_1000_80003es2lan - Apply "quirks" for gigabit operation
1087 * @hw: pointer to the HW structure
1088 *
1089 * Configure the KMRN interface by applying last minute quirks for
1090 * gigabit operation.
1091 **/
1092static s32 e1000_cfg_kmrn_1000_80003es2lan(struct e1000_hw *hw)
1093{
1094 s32 ret_val;
1095 u16 reg_data;
1096 u32 tipg;
1097
1098 reg_data = E1000_KMRNCTRLSTA_HD_CTRL_1000_DEFAULT;
1099 ret_val = e1000e_write_kmrn_reg(hw,
1100 E1000_KMRNCTRLSTA_OFFSET_HD_CTRL,
1101 reg_data);
1102 if (ret_val)
1103 return ret_val;
1104
1105 /* Configure Transmit Inter-Packet Gap */
1106 tipg = er32(TIPG);
1107 tipg &= ~E1000_TIPG_IPGT_MASK;
1108 tipg |= DEFAULT_TIPG_IPGT_1000_80003ES2LAN;
1109 ew32(TIPG, tipg);
1110
1111 ret_val = e1e_rphy(hw, GG82563_PHY_KMRN_MODE_CTRL, &reg_data);
1112 if (ret_val)
1113 return ret_val;
1114
1115 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
1116 ret_val = e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
1117
1118 return ret_val;
1119}
1120
1121/**
1122 * e1000_clear_hw_cntrs_80003es2lan - Clear device specific hardware counters
1123 * @hw: pointer to the HW structure
1124 *
1125 * Clears the hardware counters by reading the counter registers.
1126 **/
1127static void e1000_clear_hw_cntrs_80003es2lan(struct e1000_hw *hw)
1128{
1129 u32 temp;
1130
1131 e1000e_clear_hw_cntrs_base(hw);
1132
1133 temp = er32(PRC64);
1134 temp = er32(PRC127);
1135 temp = er32(PRC255);
1136 temp = er32(PRC511);
1137 temp = er32(PRC1023);
1138 temp = er32(PRC1522);
1139 temp = er32(PTC64);
1140 temp = er32(PTC127);
1141 temp = er32(PTC255);
1142 temp = er32(PTC511);
1143 temp = er32(PTC1023);
1144 temp = er32(PTC1522);
1145
1146 temp = er32(ALGNERRC);
1147 temp = er32(RXERRC);
1148 temp = er32(TNCRS);
1149 temp = er32(CEXTERR);
1150 temp = er32(TSCTC);
1151 temp = er32(TSCTFC);
1152
1153 temp = er32(MGTPRC);
1154 temp = er32(MGTPDC);
1155 temp = er32(MGTPTC);
1156
1157 temp = er32(IAC);
1158 temp = er32(ICRXOC);
1159
1160 temp = er32(ICRXPTC);
1161 temp = er32(ICRXATC);
1162 temp = er32(ICTXPTC);
1163 temp = er32(ICTXATC);
1164 temp = er32(ICTXQEC);
1165 temp = er32(ICTXQMTC);
1166 temp = er32(ICRXDMTC);
1167}
1168
1169static struct e1000_mac_operations es2_mac_ops = {
1170 .mng_mode_enab = E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT,
1171 /* check_for_link dependent on media type */
1172 .cleanup_led = e1000e_cleanup_led_generic,
1173 .clear_hw_cntrs = e1000_clear_hw_cntrs_80003es2lan,
1174 .get_bus_info = e1000e_get_bus_info_pcie,
1175 .get_link_up_info = e1000_get_link_up_info_80003es2lan,
1176 .led_on = e1000e_led_on_generic,
1177 .led_off = e1000e_led_off_generic,
1178 .mc_addr_list_update = e1000e_mc_addr_list_update_generic,
1179 .reset_hw = e1000_reset_hw_80003es2lan,
1180 .init_hw = e1000_init_hw_80003es2lan,
1181 .setup_link = e1000e_setup_link,
1182 /* setup_physical_interface dependent on media type */
1183};
1184
1185static struct e1000_phy_operations es2_phy_ops = {
1186 .acquire_phy = e1000_acquire_phy_80003es2lan,
1187 .check_reset_block = e1000e_check_reset_block_generic,
1188 .commit_phy = e1000e_phy_sw_reset,
1189 .force_speed_duplex = e1000_phy_force_speed_duplex_80003es2lan,
1190 .get_cfg_done = e1000_get_cfg_done_80003es2lan,
1191 .get_cable_length = e1000_get_cable_length_80003es2lan,
1192 .get_phy_info = e1000e_get_phy_info_m88,
1193 .read_phy_reg = e1000_read_phy_reg_gg82563_80003es2lan,
1194 .release_phy = e1000_release_phy_80003es2lan,
1195 .reset_phy = e1000e_phy_hw_reset_generic,
1196 .set_d0_lplu_state = NULL,
1197 .set_d3_lplu_state = e1000e_set_d3_lplu_state,
1198 .write_phy_reg = e1000_write_phy_reg_gg82563_80003es2lan,
1199};
1200
1201static struct e1000_nvm_operations es2_nvm_ops = {
1202 .acquire_nvm = e1000_acquire_nvm_80003es2lan,
1203 .read_nvm = e1000e_read_nvm_eerd,
1204 .release_nvm = e1000_release_nvm_80003es2lan,
1205 .update_nvm = e1000e_update_nvm_checksum_generic,
1206 .valid_led_default = e1000e_valid_led_default,
1207 .validate_nvm = e1000e_validate_nvm_checksum_generic,
1208 .write_nvm = e1000_write_nvm_80003es2lan,
1209};
1210
1211struct e1000_info e1000_es2_info = {
1212 .mac = e1000_80003es2lan,
1213 .flags = FLAG_HAS_HW_VLAN_FILTER
1214 | FLAG_HAS_JUMBO_FRAMES
1215 | FLAG_HAS_STATS_PTC_PRC
1216 | FLAG_HAS_WOL
1217 | FLAG_APME_IN_CTRL3
1218 | FLAG_RX_CSUM_ENABLED
1219 | FLAG_HAS_CTRLEXT_ON_LOAD
1220 | FLAG_HAS_STATS_ICR_ICT
1221 | FLAG_RX_NEEDS_RESTART /* errata */
1222 | FLAG_TARC_SET_BIT_ZERO /* errata */
1223 | FLAG_APME_CHECK_PORT_B
1224 | FLAG_DISABLE_FC_PAUSE_TIME /* errata */
1225 | FLAG_TIPG_MEDIUM_FOR_80003ESLAN,
1226 .pba = 38,
1227 .get_invariants = e1000_get_invariants_80003es2lan,
1228 .mac_ops = &es2_mac_ops,
1229 .phy_ops = &es2_phy_ops,
1230 .nvm_ops = &es2_nvm_ops,
1231};
1232
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
new file mode 100644
index 000000000000..0e80406bfbd7
--- /dev/null
+++ b/drivers/net/e1000e/ethtool.c
@@ -0,0 +1,1774 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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/* ethtool support for e1000 */
30
31#include <linux/netdevice.h>
32#include <linux/ethtool.h>
33#include <linux/pci.h>
34#include <linux/delay.h>
35
36#include "e1000.h"
37
38struct e1000_stats {
39 char stat_string[ETH_GSTRING_LEN];
40 int sizeof_stat;
41 int stat_offset;
42};
43
44#define E1000_STAT(m) sizeof(((struct e1000_adapter *)0)->m), \
45 offsetof(struct e1000_adapter, m)
46static const struct e1000_stats e1000_gstrings_stats[] = {
47 { "rx_packets", E1000_STAT(stats.gprc) },
48 { "tx_packets", E1000_STAT(stats.gptc) },
49 { "rx_bytes", E1000_STAT(stats.gorcl) },
50 { "tx_bytes", E1000_STAT(stats.gotcl) },
51 { "rx_broadcast", E1000_STAT(stats.bprc) },
52 { "tx_broadcast", E1000_STAT(stats.bptc) },
53 { "rx_multicast", E1000_STAT(stats.mprc) },
54 { "tx_multicast", E1000_STAT(stats.mptc) },
55 { "rx_errors", E1000_STAT(net_stats.rx_errors) },
56 { "tx_errors", E1000_STAT(net_stats.tx_errors) },
57 { "tx_dropped", E1000_STAT(net_stats.tx_dropped) },
58 { "multicast", E1000_STAT(stats.mprc) },
59 { "collisions", E1000_STAT(stats.colc) },
60 { "rx_length_errors", E1000_STAT(net_stats.rx_length_errors) },
61 { "rx_over_errors", E1000_STAT(net_stats.rx_over_errors) },
62 { "rx_crc_errors", E1000_STAT(stats.crcerrs) },
63 { "rx_frame_errors", E1000_STAT(net_stats.rx_frame_errors) },
64 { "rx_no_buffer_count", E1000_STAT(stats.rnbc) },
65 { "rx_missed_errors", E1000_STAT(stats.mpc) },
66 { "tx_aborted_errors", E1000_STAT(stats.ecol) },
67 { "tx_carrier_errors", E1000_STAT(stats.tncrs) },
68 { "tx_fifo_errors", E1000_STAT(net_stats.tx_fifo_errors) },
69 { "tx_heartbeat_errors", E1000_STAT(net_stats.tx_heartbeat_errors) },
70 { "tx_window_errors", E1000_STAT(stats.latecol) },
71 { "tx_abort_late_coll", E1000_STAT(stats.latecol) },
72 { "tx_deferred_ok", E1000_STAT(stats.dc) },
73 { "tx_single_coll_ok", E1000_STAT(stats.scc) },
74 { "tx_multi_coll_ok", E1000_STAT(stats.mcc) },
75 { "tx_timeout_count", E1000_STAT(tx_timeout_count) },
76 { "tx_restart_queue", E1000_STAT(restart_queue) },
77 { "rx_long_length_errors", E1000_STAT(stats.roc) },
78 { "rx_short_length_errors", E1000_STAT(stats.ruc) },
79 { "rx_align_errors", E1000_STAT(stats.algnerrc) },
80 { "tx_tcp_seg_good", E1000_STAT(stats.tsctc) },
81 { "tx_tcp_seg_failed", E1000_STAT(stats.tsctfc) },
82 { "rx_flow_control_xon", E1000_STAT(stats.xonrxc) },
83 { "rx_flow_control_xoff", E1000_STAT(stats.xoffrxc) },
84 { "tx_flow_control_xon", E1000_STAT(stats.xontxc) },
85 { "tx_flow_control_xoff", E1000_STAT(stats.xofftxc) },
86 { "rx_long_byte_count", E1000_STAT(stats.gorcl) },
87 { "rx_csum_offload_good", E1000_STAT(hw_csum_good) },
88 { "rx_csum_offload_errors", E1000_STAT(hw_csum_err) },
89 { "rx_header_split", E1000_STAT(rx_hdr_split) },
90 { "alloc_rx_buff_failed", E1000_STAT(alloc_rx_buff_failed) },
91 { "tx_smbus", E1000_STAT(stats.mgptc) },
92 { "rx_smbus", E1000_STAT(stats.mgprc) },
93 { "dropped_smbus", E1000_STAT(stats.mgpdc) },
94 { "rx_dma_failed", E1000_STAT(rx_dma_failed) },
95 { "tx_dma_failed", E1000_STAT(tx_dma_failed) },
96};
97
98#define E1000_GLOBAL_STATS_LEN \
99 sizeof(e1000_gstrings_stats) / sizeof(struct e1000_stats)
100#define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN)
101static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {
102 "Register test (offline)", "Eeprom test (offline)",
103 "Interrupt test (offline)", "Loopback test (offline)",
104 "Link test (on/offline)"
105};
106#define E1000_TEST_LEN sizeof(e1000_gstrings_test) / ETH_GSTRING_LEN
107
108static int e1000_get_settings(struct net_device *netdev,
109 struct ethtool_cmd *ecmd)
110{
111 struct e1000_adapter *adapter = netdev_priv(netdev);
112 struct e1000_hw *hw = &adapter->hw;
113
114 if (hw->media_type == e1000_media_type_copper) {
115
116 ecmd->supported = (SUPPORTED_10baseT_Half |
117 SUPPORTED_10baseT_Full |
118 SUPPORTED_100baseT_Half |
119 SUPPORTED_100baseT_Full |
120 SUPPORTED_1000baseT_Full |
121 SUPPORTED_Autoneg |
122 SUPPORTED_TP);
123 if (hw->phy.type == e1000_phy_ife)
124 ecmd->supported &= ~SUPPORTED_1000baseT_Full;
125 ecmd->advertising = ADVERTISED_TP;
126
127 if (hw->mac.autoneg == 1) {
128 ecmd->advertising |= ADVERTISED_Autoneg;
129 /* the e1000 autoneg seems to match ethtool nicely */
130 ecmd->advertising |= hw->phy.autoneg_advertised;
131 }
132
133 ecmd->port = PORT_TP;
134 ecmd->phy_address = hw->phy.addr;
135 ecmd->transceiver = XCVR_INTERNAL;
136
137 } else {
138 ecmd->supported = (SUPPORTED_1000baseT_Full |
139 SUPPORTED_FIBRE |
140 SUPPORTED_Autoneg);
141
142 ecmd->advertising = (ADVERTISED_1000baseT_Full |
143 ADVERTISED_FIBRE |
144 ADVERTISED_Autoneg);
145
146 ecmd->port = PORT_FIBRE;
147 ecmd->transceiver = XCVR_EXTERNAL;
148 }
149
150 if (er32(STATUS) & E1000_STATUS_LU) {
151
152 adapter->hw.mac.ops.get_link_up_info(hw, &adapter->link_speed,
153 &adapter->link_duplex);
154 ecmd->speed = adapter->link_speed;
155
156 /* unfortunately FULL_DUPLEX != DUPLEX_FULL
157 * and HALF_DUPLEX != DUPLEX_HALF */
158
159 if (adapter->link_duplex == FULL_DUPLEX)
160 ecmd->duplex = DUPLEX_FULL;
161 else
162 ecmd->duplex = DUPLEX_HALF;
163 } else {
164 ecmd->speed = -1;
165 ecmd->duplex = -1;
166 }
167
168 ecmd->autoneg = ((hw->media_type == e1000_media_type_fiber) ||
169 hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
170 return 0;
171}
172
173static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
174{
175 struct e1000_mac_info *mac = &adapter->hw.mac;
176
177 mac->autoneg = 0;
178
179 /* Fiber NICs only allow 1000 gbps Full duplex */
180 if ((adapter->hw.media_type == e1000_media_type_fiber) &&
181 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
182 ndev_err(adapter->netdev, "Unsupported Speed/Duplex "
183 "configuration\n");
184 return -EINVAL;
185 }
186
187 switch (spddplx) {
188 case SPEED_10 + DUPLEX_HALF:
189 mac->forced_speed_duplex = ADVERTISE_10_HALF;
190 break;
191 case SPEED_10 + DUPLEX_FULL:
192 mac->forced_speed_duplex = ADVERTISE_10_FULL;
193 break;
194 case SPEED_100 + DUPLEX_HALF:
195 mac->forced_speed_duplex = ADVERTISE_100_HALF;
196 break;
197 case SPEED_100 + DUPLEX_FULL:
198 mac->forced_speed_duplex = ADVERTISE_100_FULL;
199 break;
200 case SPEED_1000 + DUPLEX_FULL:
201 mac->autoneg = 1;
202 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
203 break;
204 case SPEED_1000 + DUPLEX_HALF: /* not supported */
205 default:
206 ndev_err(adapter->netdev, "Unsupported Speed/Duplex "
207 "configuration\n");
208 return -EINVAL;
209 }
210 return 0;
211}
212
213static int e1000_set_settings(struct net_device *netdev,
214 struct ethtool_cmd *ecmd)
215{
216 struct e1000_adapter *adapter = netdev_priv(netdev);
217 struct e1000_hw *hw = &adapter->hw;
218
219 /* When SoL/IDER sessions are active, autoneg/speed/duplex
220 * cannot be changed */
221 if (e1000_check_reset_block(hw)) {
222 ndev_err(netdev, "Cannot change link "
223 "characteristics when SoL/IDER is active.\n");
224 return -EINVAL;
225 }
226
227 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
228 msleep(1);
229
230 if (ecmd->autoneg == AUTONEG_ENABLE) {
231 hw->mac.autoneg = 1;
232 if (hw->media_type == e1000_media_type_fiber)
233 hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |
234 ADVERTISED_FIBRE |
235 ADVERTISED_Autoneg;
236 else
237 hw->phy.autoneg_advertised = ecmd->advertising |
238 ADVERTISED_TP |
239 ADVERTISED_Autoneg;
240 ecmd->advertising = hw->phy.autoneg_advertised;
241 } else {
242 if (e1000_set_spd_dplx(adapter, ecmd->speed + ecmd->duplex)) {
243 clear_bit(__E1000_RESETTING, &adapter->state);
244 return -EINVAL;
245 }
246 }
247
248 /* reset the link */
249
250 if (netif_running(adapter->netdev)) {
251 e1000e_down(adapter);
252 e1000e_up(adapter);
253 } else {
254 e1000e_reset(adapter);
255 }
256
257 clear_bit(__E1000_RESETTING, &adapter->state);
258 return 0;
259}
260
261static void e1000_get_pauseparam(struct net_device *netdev,
262 struct ethtool_pauseparam *pause)
263{
264 struct e1000_adapter *adapter = netdev_priv(netdev);
265 struct e1000_hw *hw = &adapter->hw;
266
267 pause->autoneg =
268 (adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
269
270 if (hw->mac.fc == e1000_fc_rx_pause) {
271 pause->rx_pause = 1;
272 } else if (hw->mac.fc == e1000_fc_tx_pause) {
273 pause->tx_pause = 1;
274 } else if (hw->mac.fc == e1000_fc_full) {
275 pause->rx_pause = 1;
276 pause->tx_pause = 1;
277 }
278}
279
280static int e1000_set_pauseparam(struct net_device *netdev,
281 struct ethtool_pauseparam *pause)
282{
283 struct e1000_adapter *adapter = netdev_priv(netdev);
284 struct e1000_hw *hw = &adapter->hw;
285 int retval = 0;
286
287 adapter->fc_autoneg = pause->autoneg;
288
289 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
290 msleep(1);
291
292 if (pause->rx_pause && pause->tx_pause)
293 hw->mac.fc = e1000_fc_full;
294 else if (pause->rx_pause && !pause->tx_pause)
295 hw->mac.fc = e1000_fc_rx_pause;
296 else if (!pause->rx_pause && pause->tx_pause)
297 hw->mac.fc = e1000_fc_tx_pause;
298 else if (!pause->rx_pause && !pause->tx_pause)
299 hw->mac.fc = e1000_fc_none;
300
301 hw->mac.original_fc = hw->mac.fc;
302
303 if (adapter->fc_autoneg == AUTONEG_ENABLE) {
304 if (netif_running(adapter->netdev)) {
305 e1000e_down(adapter);
306 e1000e_up(adapter);
307 } else {
308 e1000e_reset(adapter);
309 }
310 } else {
311 retval = ((hw->media_type == e1000_media_type_fiber) ?
312 hw->mac.ops.setup_link(hw) : e1000e_force_mac_fc(hw));
313 }
314
315 clear_bit(__E1000_RESETTING, &adapter->state);
316 return retval;
317}
318
319static u32 e1000_get_rx_csum(struct net_device *netdev)
320{
321 struct e1000_adapter *adapter = netdev_priv(netdev);
322 return (adapter->flags & FLAG_RX_CSUM_ENABLED);
323}
324
325static int e1000_set_rx_csum(struct net_device *netdev, u32 data)
326{
327 struct e1000_adapter *adapter = netdev_priv(netdev);
328
329 if (data)
330 adapter->flags |= FLAG_RX_CSUM_ENABLED;
331 else
332 adapter->flags &= ~FLAG_RX_CSUM_ENABLED;
333
334 if (netif_running(netdev))
335 e1000e_reinit_locked(adapter);
336 else
337 e1000e_reset(adapter);
338 return 0;
339}
340
341static u32 e1000_get_tx_csum(struct net_device *netdev)
342{
343 return ((netdev->features & NETIF_F_HW_CSUM) != 0);
344}
345
346static int e1000_set_tx_csum(struct net_device *netdev, u32 data)
347{
348 if (data)
349 netdev->features |= NETIF_F_HW_CSUM;
350 else
351 netdev->features &= ~NETIF_F_HW_CSUM;
352
353 return 0;
354}
355
356static int e1000_set_tso(struct net_device *netdev, u32 data)
357{
358 struct e1000_adapter *adapter = netdev_priv(netdev);
359
360 if (data) {
361 netdev->features |= NETIF_F_TSO;
362 netdev->features |= NETIF_F_TSO6;
363 } else {
364 netdev->features &= ~NETIF_F_TSO;
365 netdev->features &= ~NETIF_F_TSO6;
366 }
367
368 ndev_info(netdev, "TSO is %s\n",
369 data ? "Enabled" : "Disabled");
370 adapter->flags |= FLAG_TSO_FORCE;
371 return 0;
372}
373
374static u32 e1000_get_msglevel(struct net_device *netdev)
375{
376 struct e1000_adapter *adapter = netdev_priv(netdev);
377 return adapter->msg_enable;
378}
379
380static void e1000_set_msglevel(struct net_device *netdev, u32 data)
381{
382 struct e1000_adapter *adapter = netdev_priv(netdev);
383 adapter->msg_enable = data;
384}
385
386static int e1000_get_regs_len(struct net_device *netdev)
387{
388#define E1000_REGS_LEN 32 /* overestimate */
389 return E1000_REGS_LEN * sizeof(u32);
390}
391
392static void e1000_get_regs(struct net_device *netdev,
393 struct ethtool_regs *regs, void *p)
394{
395 struct e1000_adapter *adapter = netdev_priv(netdev);
396 struct e1000_hw *hw = &adapter->hw;
397 u32 *regs_buff = p;
398 u16 phy_data;
399 u8 revision_id;
400
401 memset(p, 0, E1000_REGS_LEN * sizeof(u32));
402
403 pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);
404
405 regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;
406
407 regs_buff[0] = er32(CTRL);
408 regs_buff[1] = er32(STATUS);
409
410 regs_buff[2] = er32(RCTL);
411 regs_buff[3] = er32(RDLEN);
412 regs_buff[4] = er32(RDH);
413 regs_buff[5] = er32(RDT);
414 regs_buff[6] = er32(RDTR);
415
416 regs_buff[7] = er32(TCTL);
417 regs_buff[8] = er32(TDLEN);
418 regs_buff[9] = er32(TDH);
419 regs_buff[10] = er32(TDT);
420 regs_buff[11] = er32(TIDV);
421
422 regs_buff[12] = adapter->hw.phy.type; /* PHY type (IGP=1, M88=0) */
423 if (hw->phy.type == e1000_phy_m88) {
424 e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
425 regs_buff[13] = (u32)phy_data; /* cable length */
426 regs_buff[14] = 0; /* Dummy (to align w/ IGP phy reg dump) */
427 regs_buff[15] = 0; /* Dummy (to align w/ IGP phy reg dump) */
428 regs_buff[16] = 0; /* Dummy (to align w/ IGP phy reg dump) */
429 e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
430 regs_buff[17] = (u32)phy_data; /* extended 10bt distance */
431 regs_buff[18] = regs_buff[13]; /* cable polarity */
432 regs_buff[19] = 0; /* Dummy (to align w/ IGP phy reg dump) */
433 regs_buff[20] = regs_buff[17]; /* polarity correction */
434 /* phy receive errors */
435 regs_buff[22] = adapter->phy_stats.receive_errors;
436 regs_buff[23] = regs_buff[13]; /* mdix mode */
437 }
438 regs_buff[21] = adapter->phy_stats.idle_errors; /* phy idle errors */
439 e1e_rphy(hw, PHY_1000T_STATUS, &phy_data);
440 regs_buff[24] = (u32)phy_data; /* phy local receiver status */
441 regs_buff[25] = regs_buff[24]; /* phy remote receiver status */
442}
443
444static int e1000_get_eeprom_len(struct net_device *netdev)
445{
446 struct e1000_adapter *adapter = netdev_priv(netdev);
447 return adapter->hw.nvm.word_size * 2;
448}
449
450static int e1000_get_eeprom(struct net_device *netdev,
451 struct ethtool_eeprom *eeprom, u8 *bytes)
452{
453 struct e1000_adapter *adapter = netdev_priv(netdev);
454 struct e1000_hw *hw = &adapter->hw;
455 u16 *eeprom_buff;
456 int first_word;
457 int last_word;
458 int ret_val = 0;
459 u16 i;
460
461 if (eeprom->len == 0)
462 return -EINVAL;
463
464 eeprom->magic = adapter->pdev->vendor | (adapter->pdev->device << 16);
465
466 first_word = eeprom->offset >> 1;
467 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
468
469 eeprom_buff = kmalloc(sizeof(u16) *
470 (last_word - first_word + 1), GFP_KERNEL);
471 if (!eeprom_buff)
472 return -ENOMEM;
473
474 if (hw->nvm.type == e1000_nvm_eeprom_spi) {
475 ret_val = e1000_read_nvm(hw, first_word,
476 last_word - first_word + 1,
477 eeprom_buff);
478 } else {
479 for (i = 0; i < last_word - first_word + 1; i++) {
480 ret_val = e1000_read_nvm(hw, first_word + i, 1,
481 &eeprom_buff[i]);
482 if (ret_val)
483 break;
484 }
485 }
486
487 /* Device's eeprom is always little-endian, word addressable */
488 for (i = 0; i < last_word - first_word + 1; i++)
489 le16_to_cpus(&eeprom_buff[i]);
490
491 memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
492 kfree(eeprom_buff);
493
494 return ret_val;
495}
496
497static int e1000_set_eeprom(struct net_device *netdev,
498 struct ethtool_eeprom *eeprom, u8 *bytes)
499{
500 struct e1000_adapter *adapter = netdev_priv(netdev);
501 struct e1000_hw *hw = &adapter->hw;
502 u16 *eeprom_buff;
503 void *ptr;
504 int max_len;
505 int first_word;
506 int last_word;
507 int ret_val = 0;
508 u16 i;
509
510 if (eeprom->len == 0)
511 return -EOPNOTSUPP;
512
513 if (eeprom->magic != (adapter->pdev->vendor | (adapter->pdev->device << 16)))
514 return -EFAULT;
515
516 max_len = hw->nvm.word_size * 2;
517
518 first_word = eeprom->offset >> 1;
519 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
520 eeprom_buff = kmalloc(max_len, GFP_KERNEL);
521 if (!eeprom_buff)
522 return -ENOMEM;
523
524 ptr = (void *)eeprom_buff;
525
526 if (eeprom->offset & 1) {
527 /* need read/modify/write of first changed EEPROM word */
528 /* only the second byte of the word is being modified */
529 ret_val = e1000_read_nvm(hw, first_word, 1, &eeprom_buff[0]);
530 ptr++;
531 }
532 if (((eeprom->offset + eeprom->len) & 1) && (ret_val == 0))
533 /* need read/modify/write of last changed EEPROM word */
534 /* only the first byte of the word is being modified */
535 ret_val = e1000_read_nvm(hw, last_word, 1,
536 &eeprom_buff[last_word - first_word]);
537
538 /* Device's eeprom is always little-endian, word addressable */
539 for (i = 0; i < last_word - first_word + 1; i++)
540 le16_to_cpus(&eeprom_buff[i]);
541
542 memcpy(ptr, bytes, eeprom->len);
543
544 for (i = 0; i < last_word - first_word + 1; i++)
545 eeprom_buff[i] = cpu_to_le16(eeprom_buff[i]);
546
547 ret_val = e1000_write_nvm(hw, first_word,
548 last_word - first_word + 1, eeprom_buff);
549
550 /* Update the checksum over the first part of the EEPROM if needed
551 * and flush shadow RAM for 82573 controllers */
552 if ((ret_val == 0) && ((first_word <= NVM_CHECKSUM_REG) ||
553 (hw->mac.type == e1000_82573)))
554 e1000e_update_nvm_checksum(hw);
555
556 kfree(eeprom_buff);
557 return ret_val;
558}
559
560static void e1000_get_drvinfo(struct net_device *netdev,
561 struct ethtool_drvinfo *drvinfo)
562{
563 struct e1000_adapter *adapter = netdev_priv(netdev);
564 char firmware_version[32];
565 u16 eeprom_data;
566
567 strncpy(drvinfo->driver, e1000e_driver_name, 32);
568 strncpy(drvinfo->version, e1000e_driver_version, 32);
569
570 /* EEPROM image version # is reported as firmware version # for
571 * PCI-E controllers */
572 e1000_read_nvm(&adapter->hw, 5, 1, &eeprom_data);
573 sprintf(firmware_version, "%d.%d-%d",
574 (eeprom_data & 0xF000) >> 12,
575 (eeprom_data & 0x0FF0) >> 4,
576 eeprom_data & 0x000F);
577
578 strncpy(drvinfo->fw_version, firmware_version, 32);
579 strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
580 drvinfo->n_stats = E1000_STATS_LEN;
581 drvinfo->testinfo_len = E1000_TEST_LEN;
582 drvinfo->regdump_len = e1000_get_regs_len(netdev);
583 drvinfo->eedump_len = e1000_get_eeprom_len(netdev);
584}
585
586static void e1000_get_ringparam(struct net_device *netdev,
587 struct ethtool_ringparam *ring)
588{
589 struct e1000_adapter *adapter = netdev_priv(netdev);
590 struct e1000_ring *tx_ring = adapter->tx_ring;
591 struct e1000_ring *rx_ring = adapter->rx_ring;
592
593 ring->rx_max_pending = E1000_MAX_RXD;
594 ring->tx_max_pending = E1000_MAX_TXD;
595 ring->rx_mini_max_pending = 0;
596 ring->rx_jumbo_max_pending = 0;
597 ring->rx_pending = rx_ring->count;
598 ring->tx_pending = tx_ring->count;
599 ring->rx_mini_pending = 0;
600 ring->rx_jumbo_pending = 0;
601}
602
603static int e1000_set_ringparam(struct net_device *netdev,
604 struct ethtool_ringparam *ring)
605{
606 struct e1000_adapter *adapter = netdev_priv(netdev);
607 struct e1000_ring *tx_ring, *tx_old;
608 struct e1000_ring *rx_ring, *rx_old;
609 int err;
610
611 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
612 return -EINVAL;
613
614 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
615 msleep(1);
616
617 if (netif_running(adapter->netdev))
618 e1000e_down(adapter);
619
620 tx_old = adapter->tx_ring;
621 rx_old = adapter->rx_ring;
622
623 err = -ENOMEM;
624 tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
625 if (!tx_ring)
626 goto err_alloc_tx;
627
628 rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
629 if (!rx_ring)
630 goto err_alloc_rx;
631
632 adapter->tx_ring = tx_ring;
633 adapter->rx_ring = rx_ring;
634
635 rx_ring->count = max(ring->rx_pending, (u32)E1000_MIN_RXD);
636 rx_ring->count = min(rx_ring->count, (u32)(E1000_MAX_RXD));
637 rx_ring->count = ALIGN(rx_ring->count, REQ_RX_DESCRIPTOR_MULTIPLE);
638
639 tx_ring->count = max(ring->tx_pending, (u32)E1000_MIN_TXD);
640 tx_ring->count = min(tx_ring->count, (u32)(E1000_MAX_TXD));
641 tx_ring->count = ALIGN(tx_ring->count, REQ_TX_DESCRIPTOR_MULTIPLE);
642
643 if (netif_running(adapter->netdev)) {
644 /* Try to get new resources before deleting old */
645 err = e1000e_setup_rx_resources(adapter);
646 if (err)
647 goto err_setup_rx;
648 err = e1000e_setup_tx_resources(adapter);
649 if (err)
650 goto err_setup_tx;
651
652 /* save the new, restore the old in order to free it,
653 * then restore the new back again */
654 adapter->rx_ring = rx_old;
655 adapter->tx_ring = tx_old;
656 e1000e_free_rx_resources(adapter);
657 e1000e_free_tx_resources(adapter);
658 kfree(tx_old);
659 kfree(rx_old);
660 adapter->rx_ring = rx_ring;
661 adapter->tx_ring = tx_ring;
662 err = e1000e_up(adapter);
663 if (err)
664 goto err_setup;
665 }
666
667 clear_bit(__E1000_RESETTING, &adapter->state);
668 return 0;
669err_setup_tx:
670 e1000e_free_rx_resources(adapter);
671err_setup_rx:
672 adapter->rx_ring = rx_old;
673 adapter->tx_ring = tx_old;
674 kfree(rx_ring);
675err_alloc_rx:
676 kfree(tx_ring);
677err_alloc_tx:
678 e1000e_up(adapter);
679err_setup:
680 clear_bit(__E1000_RESETTING, &adapter->state);
681 return err;
682}
683
684#define REG_PATTERN_TEST(R, M, W) REG_PATTERN_TEST_ARRAY(R, 0, M, W)
685#define REG_PATTERN_TEST_ARRAY(reg, offset, mask, writeable) \
686{ \
687 u32 _pat; \
688 u32 _value; \
689 u32 _test[] = {0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF}; \
690 for (_pat = 0; _pat < ARRAY_SIZE(_test); _pat++) { \
691 E1000_WRITE_REG_ARRAY(hw, reg, offset, \
692 (_test[_pat] & writeable)); \
693 _value = E1000_READ_REG_ARRAY(hw, reg, offset); \
694 if (_value != (_test[_pat] & writeable & mask)) { \
695 ndev_err(netdev, "pattern test reg %04X " \
696 "failed: got 0x%08X expected 0x%08X\n", \
697 reg + offset, \
698 value, (_test[_pat] & writeable & mask)); \
699 *data = reg; \
700 return 1; \
701 } \
702 } \
703}
704
705#define REG_SET_AND_CHECK(R, M, W) \
706{ \
707 u32 _value; \
708 __ew32(hw, R, W & M); \
709 _value = __er32(hw, R); \
710 if ((W & M) != (_value & M)) { \
711 ndev_err(netdev, "set/check reg %04X test failed: " \
712 "got 0x%08X expected 0x%08X\n", R, (_value & M), \
713 (W & M)); \
714 *data = R; \
715 return 1; \
716 } \
717}
718
719static int e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
720{
721 struct e1000_hw *hw = &adapter->hw;
722 struct e1000_mac_info *mac = &adapter->hw.mac;
723 struct net_device *netdev = adapter->netdev;
724 u32 value;
725 u32 before;
726 u32 after;
727 u32 i;
728 u32 toggle;
729
730 /* The status register is Read Only, so a write should fail.
731 * Some bits that get toggled are ignored.
732 */
733 switch (mac->type) {
734 /* there are several bits on newer hardware that are r/w */
735 case e1000_82571:
736 case e1000_82572:
737 case e1000_80003es2lan:
738 toggle = 0x7FFFF3FF;
739 break;
740 case e1000_82573:
741 case e1000_ich8lan:
742 case e1000_ich9lan:
743 toggle = 0x7FFFF033;
744 break;
745 default:
746 toggle = 0xFFFFF833;
747 break;
748 }
749
750 before = er32(STATUS);
751 value = (er32(STATUS) & toggle);
752 ew32(STATUS, toggle);
753 after = er32(STATUS) & toggle;
754 if (value != after) {
755 ndev_err(netdev, "failed STATUS register test got: "
756 "0x%08X expected: 0x%08X\n", after, value);
757 *data = 1;
758 return 1;
759 }
760 /* restore previous status */
761 ew32(STATUS, before);
762
763 if ((mac->type != e1000_ich8lan) &&
764 (mac->type != e1000_ich9lan)) {
765 REG_PATTERN_TEST(E1000_FCAL, 0xFFFFFFFF, 0xFFFFFFFF);
766 REG_PATTERN_TEST(E1000_FCAH, 0x0000FFFF, 0xFFFFFFFF);
767 REG_PATTERN_TEST(E1000_FCT, 0x0000FFFF, 0xFFFFFFFF);
768 REG_PATTERN_TEST(E1000_VET, 0x0000FFFF, 0xFFFFFFFF);
769 }
770
771 REG_PATTERN_TEST(E1000_RDTR, 0x0000FFFF, 0xFFFFFFFF);
772 REG_PATTERN_TEST(E1000_RDBAH, 0xFFFFFFFF, 0xFFFFFFFF);
773 REG_PATTERN_TEST(E1000_RDLEN, 0x000FFF80, 0x000FFFFF);
774 REG_PATTERN_TEST(E1000_RDH, 0x0000FFFF, 0x0000FFFF);
775 REG_PATTERN_TEST(E1000_RDT, 0x0000FFFF, 0x0000FFFF);
776 REG_PATTERN_TEST(E1000_FCRTH, 0x0000FFF8, 0x0000FFF8);
777 REG_PATTERN_TEST(E1000_FCTTV, 0x0000FFFF, 0x0000FFFF);
778 REG_PATTERN_TEST(E1000_TIPG, 0x3FFFFFFF, 0x3FFFFFFF);
779 REG_PATTERN_TEST(E1000_TDBAH, 0xFFFFFFFF, 0xFFFFFFFF);
780 REG_PATTERN_TEST(E1000_TDLEN, 0x000FFF80, 0x000FFFFF);
781
782 REG_SET_AND_CHECK(E1000_RCTL, 0xFFFFFFFF, 0x00000000);
783
784 before = (((mac->type == e1000_ich8lan) ||
785 (mac->type == e1000_ich9lan)) ? 0x06C3B33E : 0x06DFB3FE);
786 REG_SET_AND_CHECK(E1000_RCTL, before, 0x003FFFFB);
787 REG_SET_AND_CHECK(E1000_TCTL, 0xFFFFFFFF, 0x00000000);
788
789 REG_SET_AND_CHECK(E1000_RCTL, 0xFFFFFFFF, 0x01FFFFFF);
790 REG_PATTERN_TEST(E1000_RDBAL, 0xFFFFF000, 0xFFFFFFFF);
791 REG_PATTERN_TEST(E1000_TXCW, 0x0000FFFF, 0x0000FFFF);
792 REG_PATTERN_TEST(E1000_TDBAL, 0xFFFFF000, 0xFFFFFFFF);
793
794 for (i = 0; i < mac->mta_reg_count; i++)
795 REG_PATTERN_TEST_ARRAY(E1000_MTA, i, 0xFFFFFFFF, 0xFFFFFFFF);
796
797 *data = 0;
798 return 0;
799}
800
801static int e1000_eeprom_test(struct e1000_adapter *adapter, u64 *data)
802{
803 u16 temp;
804 u16 checksum = 0;
805 u16 i;
806
807 *data = 0;
808 /* Read and add up the contents of the EEPROM */
809 for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
810 if ((e1000_read_nvm(&adapter->hw, i, 1, &temp)) < 0) {
811 *data = 1;
812 break;
813 }
814 checksum += temp;
815 }
816
817 /* If Checksum is not Correct return error else test passed */
818 if ((checksum != (u16) NVM_SUM) && !(*data))
819 *data = 2;
820
821 return *data;
822}
823
824static irqreturn_t e1000_test_intr(int irq, void *data)
825{
826 struct net_device *netdev = (struct net_device *) data;
827 struct e1000_adapter *adapter = netdev_priv(netdev);
828 struct e1000_hw *hw = &adapter->hw;
829
830 adapter->test_icr |= er32(ICR);
831
832 return IRQ_HANDLED;
833}
834
835static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
836{
837 struct net_device *netdev = adapter->netdev;
838 struct e1000_hw *hw = &adapter->hw;
839 u32 mask;
840 u32 shared_int = 1;
841 u32 irq = adapter->pdev->irq;
842 int i;
843
844 *data = 0;
845
846 /* NOTE: we don't test MSI interrupts here, yet */
847 /* Hook up test interrupt handler just for this test */
848 if (!request_irq(irq, &e1000_test_intr, IRQF_PROBE_SHARED, netdev->name,
849 netdev)) {
850 shared_int = 0;
851 } else if (request_irq(irq, &e1000_test_intr, IRQF_SHARED,
852 netdev->name, netdev)) {
853 *data = 1;
854 return -1;
855 }
856 ndev_info(netdev, "testing %s interrupt\n",
857 (shared_int ? "shared" : "unshared"));
858
859 /* Disable all the interrupts */
860 ew32(IMC, 0xFFFFFFFF);
861 msleep(10);
862
863 /* Test each interrupt */
864 for (i = 0; i < 10; i++) {
865
866 if (((adapter->hw.mac.type == e1000_ich8lan) ||
867 (adapter->hw.mac.type == e1000_ich9lan)) && i == 8)
868 continue;
869
870 /* Interrupt to test */
871 mask = 1 << i;
872
873 if (!shared_int) {
874 /* Disable the interrupt to be reported in
875 * the cause register and then force the same
876 * interrupt and see if one gets posted. If
877 * an interrupt was posted to the bus, the
878 * test failed.
879 */
880 adapter->test_icr = 0;
881 ew32(IMC, mask);
882 ew32(ICS, mask);
883 msleep(10);
884
885 if (adapter->test_icr & mask) {
886 *data = 3;
887 break;
888 }
889 }
890
891 /* Enable the interrupt to be reported in
892 * the cause register and then force the same
893 * interrupt and see if one gets posted. If
894 * an interrupt was not posted to the bus, the
895 * test failed.
896 */
897 adapter->test_icr = 0;
898 ew32(IMS, mask);
899 ew32(ICS, mask);
900 msleep(10);
901
902 if (!(adapter->test_icr & mask)) {
903 *data = 4;
904 break;
905 }
906
907 if (!shared_int) {
908 /* Disable the other interrupts to be reported in
909 * the cause register and then force the other
910 * interrupts and see if any get posted. If
911 * an interrupt was posted to the bus, the
912 * test failed.
913 */
914 adapter->test_icr = 0;
915 ew32(IMC, ~mask & 0x00007FFF);
916 ew32(ICS, ~mask & 0x00007FFF);
917 msleep(10);
918
919 if (adapter->test_icr) {
920 *data = 5;
921 break;
922 }
923 }
924 }
925
926 /* Disable all the interrupts */
927 ew32(IMC, 0xFFFFFFFF);
928 msleep(10);
929
930 /* Unhook test interrupt handler */
931 free_irq(irq, netdev);
932
933 return *data;
934}
935
936static void e1000_free_desc_rings(struct e1000_adapter *adapter)
937{
938 struct e1000_ring *tx_ring = &adapter->test_tx_ring;
939 struct e1000_ring *rx_ring = &adapter->test_rx_ring;
940 struct pci_dev *pdev = adapter->pdev;
941 int i;
942
943 if (tx_ring->desc && tx_ring->buffer_info) {
944 for (i = 0; i < tx_ring->count; i++) {
945 if (tx_ring->buffer_info[i].dma)
946 pci_unmap_single(pdev,
947 tx_ring->buffer_info[i].dma,
948 tx_ring->buffer_info[i].length,
949 PCI_DMA_TODEVICE);
950 if (tx_ring->buffer_info[i].skb)
951 dev_kfree_skb(tx_ring->buffer_info[i].skb);
952 }
953 }
954
955 if (rx_ring->desc && rx_ring->buffer_info) {
956 for (i = 0; i < rx_ring->count; i++) {
957 if (rx_ring->buffer_info[i].dma)
958 pci_unmap_single(pdev,
959 rx_ring->buffer_info[i].dma,
960 2048, PCI_DMA_FROMDEVICE);
961 if (rx_ring->buffer_info[i].skb)
962 dev_kfree_skb(rx_ring->buffer_info[i].skb);
963 }
964 }
965
966 if (tx_ring->desc) {
967 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
968 tx_ring->dma);
969 tx_ring->desc = NULL;
970 }
971 if (rx_ring->desc) {
972 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
973 rx_ring->dma);
974 rx_ring->desc = NULL;
975 }
976
977 kfree(tx_ring->buffer_info);
978 tx_ring->buffer_info = NULL;
979 kfree(rx_ring->buffer_info);
980 rx_ring->buffer_info = NULL;
981}
982
983static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
984{
985 struct e1000_ring *tx_ring = &adapter->test_tx_ring;
986 struct e1000_ring *rx_ring = &adapter->test_rx_ring;
987 struct pci_dev *pdev = adapter->pdev;
988 struct e1000_hw *hw = &adapter->hw;
989 u32 rctl;
990 int size;
991 int i;
992 int ret_val;
993
994 /* Setup Tx descriptor ring and Tx buffers */
995
996 if (!tx_ring->count)
997 tx_ring->count = E1000_DEFAULT_TXD;
998
999 size = tx_ring->count * sizeof(struct e1000_buffer);
1000 tx_ring->buffer_info = kmalloc(size, GFP_KERNEL);
1001 if (!tx_ring->buffer_info) {
1002 ret_val = 1;
1003 goto err_nomem;
1004 }
1005 memset(tx_ring->buffer_info, 0, size);
1006
1007 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1008 tx_ring->size = ALIGN(tx_ring->size, 4096);
1009 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
1010 &tx_ring->dma, GFP_KERNEL);
1011 if (!tx_ring->desc) {
1012 ret_val = 2;
1013 goto err_nomem;
1014 }
1015 memset(tx_ring->desc, 0, tx_ring->size);
1016 tx_ring->next_to_use = 0;
1017 tx_ring->next_to_clean = 0;
1018
1019 ew32(TDBAL,
1020 ((u64) tx_ring->dma & 0x00000000FFFFFFFF));
1021 ew32(TDBAH, ((u64) tx_ring->dma >> 32));
1022 ew32(TDLEN,
1023 tx_ring->count * sizeof(struct e1000_tx_desc));
1024 ew32(TDH, 0);
1025 ew32(TDT, 0);
1026 ew32(TCTL,
1027 E1000_TCTL_PSP | E1000_TCTL_EN |
1028 E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
1029 E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT);
1030
1031 for (i = 0; i < tx_ring->count; i++) {
1032 struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
1033 struct sk_buff *skb;
1034 unsigned int skb_size = 1024;
1035
1036 skb = alloc_skb(skb_size, GFP_KERNEL);
1037 if (!skb) {
1038 ret_val = 3;
1039 goto err_nomem;
1040 }
1041 skb_put(skb, skb_size);
1042 tx_ring->buffer_info[i].skb = skb;
1043 tx_ring->buffer_info[i].length = skb->len;
1044 tx_ring->buffer_info[i].dma =
1045 pci_map_single(pdev, skb->data, skb->len,
1046 PCI_DMA_TODEVICE);
1047 if (pci_dma_mapping_error(tx_ring->buffer_info[i].dma)) {
1048 ret_val = 4;
1049 goto err_nomem;
1050 }
1051 tx_desc->buffer_addr = cpu_to_le64(
1052 tx_ring->buffer_info[i].dma);
1053 tx_desc->lower.data = cpu_to_le32(skb->len);
1054 tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
1055 E1000_TXD_CMD_IFCS |
1056 E1000_TXD_CMD_RPS);
1057 tx_desc->upper.data = 0;
1058 }
1059
1060 /* Setup Rx descriptor ring and Rx buffers */
1061
1062 if (!rx_ring->count)
1063 rx_ring->count = E1000_DEFAULT_RXD;
1064
1065 size = rx_ring->count * sizeof(struct e1000_buffer);
1066 rx_ring->buffer_info = kmalloc(size, GFP_KERNEL);
1067 if (!rx_ring->buffer_info) {
1068 ret_val = 5;
1069 goto err_nomem;
1070 }
1071 memset(rx_ring->buffer_info, 0, size);
1072
1073 rx_ring->size = rx_ring->count * sizeof(struct e1000_rx_desc);
1074 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
1075 &rx_ring->dma, GFP_KERNEL);
1076 if (!rx_ring->desc) {
1077 ret_val = 6;
1078 goto err_nomem;
1079 }
1080 memset(rx_ring->desc, 0, rx_ring->size);
1081 rx_ring->next_to_use = 0;
1082 rx_ring->next_to_clean = 0;
1083
1084 rctl = er32(RCTL);
1085 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1086 ew32(RDBAL, ((u64) rx_ring->dma & 0xFFFFFFFF));
1087 ew32(RDBAH, ((u64) rx_ring->dma >> 32));
1088 ew32(RDLEN, rx_ring->size);
1089 ew32(RDH, 0);
1090 ew32(RDT, 0);
1091 rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
1092 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1093 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1094 ew32(RCTL, rctl);
1095
1096 for (i = 0; i < rx_ring->count; i++) {
1097 struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rx_ring, i);
1098 struct sk_buff *skb;
1099
1100 skb = alloc_skb(2048 + NET_IP_ALIGN, GFP_KERNEL);
1101 if (!skb) {
1102 ret_val = 7;
1103 goto err_nomem;
1104 }
1105 skb_reserve(skb, NET_IP_ALIGN);
1106 rx_ring->buffer_info[i].skb = skb;
1107 rx_ring->buffer_info[i].dma =
1108 pci_map_single(pdev, skb->data, 2048,
1109 PCI_DMA_FROMDEVICE);
1110 if (pci_dma_mapping_error(rx_ring->buffer_info[i].dma)) {
1111 ret_val = 8;
1112 goto err_nomem;
1113 }
1114 rx_desc->buffer_addr =
1115 cpu_to_le64(rx_ring->buffer_info[i].dma);
1116 memset(skb->data, 0x00, skb->len);
1117 }
1118
1119 return 0;
1120
1121err_nomem:
1122 e1000_free_desc_rings(adapter);
1123 return ret_val;
1124}
1125
1126static void e1000_phy_disable_receiver(struct e1000_adapter *adapter)
1127{
1128 /* Write out to PHY registers 29 and 30 to disable the Receiver. */
1129 e1e_wphy(&adapter->hw, 29, 0x001F);
1130 e1e_wphy(&adapter->hw, 30, 0x8FFC);
1131 e1e_wphy(&adapter->hw, 29, 0x001A);
1132 e1e_wphy(&adapter->hw, 30, 0x8FF0);
1133}
1134
1135static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
1136{
1137 struct e1000_hw *hw = &adapter->hw;
1138 u32 ctrl_reg = 0;
1139 u32 stat_reg = 0;
1140
1141 adapter->hw.mac.autoneg = 0;
1142
1143 if (adapter->hw.phy.type == e1000_phy_m88) {
1144 /* Auto-MDI/MDIX Off */
1145 e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
1146 /* reset to update Auto-MDI/MDIX */
1147 e1e_wphy(hw, PHY_CONTROL, 0x9140);
1148 /* autoneg off */
1149 e1e_wphy(hw, PHY_CONTROL, 0x8140);
1150 } else if (adapter->hw.phy.type == e1000_phy_gg82563)
1151 e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x1CC);
1152
1153 ctrl_reg = er32(CTRL);
1154
1155 if (adapter->hw.phy.type == e1000_phy_ife) {
1156 /* force 100, set loopback */
1157 e1e_wphy(hw, PHY_CONTROL, 0x6100);
1158
1159 /* Now set up the MAC to the same speed/duplex as the PHY. */
1160 ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1161 ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1162 E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1163 E1000_CTRL_SPD_100 |/* Force Speed to 100 */
1164 E1000_CTRL_FD); /* Force Duplex to FULL */
1165 } else {
1166 /* force 1000, set loopback */
1167 e1e_wphy(hw, PHY_CONTROL, 0x4140);
1168
1169 /* Now set up the MAC to the same speed/duplex as the PHY. */
1170 ctrl_reg = er32(CTRL);
1171 ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1172 ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1173 E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1174 E1000_CTRL_SPD_1000 |/* Force Speed to 1000 */
1175 E1000_CTRL_FD); /* Force Duplex to FULL */
1176 }
1177
1178 if (adapter->hw.media_type == e1000_media_type_copper &&
1179 adapter->hw.phy.type == e1000_phy_m88) {
1180 ctrl_reg |= E1000_CTRL_ILOS; /* Invert Loss of Signal */
1181 } else {
1182 /* Set the ILOS bit on the fiber Nic if half duplex link is
1183 * detected. */
1184 stat_reg = er32(STATUS);
1185 if ((stat_reg & E1000_STATUS_FD) == 0)
1186 ctrl_reg |= (E1000_CTRL_ILOS | E1000_CTRL_SLU);
1187 }
1188
1189 ew32(CTRL, ctrl_reg);
1190
1191 /* Disable the receiver on the PHY so when a cable is plugged in, the
1192 * PHY does not begin to autoneg when a cable is reconnected to the NIC.
1193 */
1194 if (adapter->hw.phy.type == e1000_phy_m88)
1195 e1000_phy_disable_receiver(adapter);
1196
1197 udelay(500);
1198
1199 return 0;
1200}
1201
1202static int e1000_set_82571_fiber_loopback(struct e1000_adapter *adapter)
1203{
1204 struct e1000_hw *hw = &adapter->hw;
1205 u32 ctrl = er32(CTRL);
1206 int link = 0;
1207
1208 /* special requirements for 82571/82572 fiber adapters */
1209
1210 /* jump through hoops to make sure link is up because serdes
1211 * link is hardwired up */
1212 ctrl |= E1000_CTRL_SLU;
1213 ew32(CTRL, ctrl);
1214
1215 /* disable autoneg */
1216 ctrl = er32(TXCW);
1217 ctrl &= ~(1 << 31);
1218 ew32(TXCW, ctrl);
1219
1220 link = (er32(STATUS) & E1000_STATUS_LU);
1221
1222 if (!link) {
1223 /* set invert loss of signal */
1224 ctrl = er32(CTRL);
1225 ctrl |= E1000_CTRL_ILOS;
1226 ew32(CTRL, ctrl);
1227 }
1228
1229 /* special write to serdes control register to enable SerDes analog
1230 * loopback */
1231#define E1000_SERDES_LB_ON 0x410
1232 ew32(SCTL, E1000_SERDES_LB_ON);
1233 msleep(10);
1234
1235 return 0;
1236}
1237
1238/* only call this for fiber/serdes connections to es2lan */
1239static int e1000_set_es2lan_mac_loopback(struct e1000_adapter *adapter)
1240{
1241 struct e1000_hw *hw = &adapter->hw;
1242 u32 ctrlext = er32(CTRL_EXT);
1243 u32 ctrl = er32(CTRL);
1244
1245 /* save CTRL_EXT to restore later, reuse an empty variable (unused
1246 on mac_type 80003es2lan) */
1247 adapter->tx_fifo_head = ctrlext;
1248
1249 /* clear the serdes mode bits, putting the device into mac loopback */
1250 ctrlext &= ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1251 ew32(CTRL_EXT, ctrlext);
1252
1253 /* force speed to 1000/FD, link up */
1254 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1255 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX |
1256 E1000_CTRL_SPD_1000 | E1000_CTRL_FD);
1257 ew32(CTRL, ctrl);
1258
1259 /* set mac loopback */
1260 ctrl = er32(RCTL);
1261 ctrl |= E1000_RCTL_LBM_MAC;
1262 ew32(RCTL, ctrl);
1263
1264 /* set testing mode parameters (no need to reset later) */
1265#define KMRNCTRLSTA_OPMODE (0x1F << 16)
1266#define KMRNCTRLSTA_OPMODE_1GB_FD_GMII 0x0582
1267 ew32(KMRNCTRLSTA,
1268 (KMRNCTRLSTA_OPMODE | KMRNCTRLSTA_OPMODE_1GB_FD_GMII));
1269
1270 return 0;
1271}
1272
1273static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
1274{
1275 struct e1000_hw *hw = &adapter->hw;
1276 u32 rctl;
1277
1278 if (hw->media_type == e1000_media_type_fiber ||
1279 hw->media_type == e1000_media_type_internal_serdes) {
1280 switch (hw->mac.type) {
1281 case e1000_80003es2lan:
1282 return e1000_set_es2lan_mac_loopback(adapter);
1283 break;
1284 case e1000_82571:
1285 case e1000_82572:
1286 return e1000_set_82571_fiber_loopback(adapter);
1287 break;
1288 default:
1289 rctl = er32(RCTL);
1290 rctl |= E1000_RCTL_LBM_TCVR;
1291 ew32(RCTL, rctl);
1292 return 0;
1293 }
1294 } else if (hw->media_type == e1000_media_type_copper) {
1295 return e1000_integrated_phy_loopback(adapter);
1296 }
1297
1298 return 7;
1299}
1300
1301static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
1302{
1303 struct e1000_hw *hw = &adapter->hw;
1304 u32 rctl;
1305 u16 phy_reg;
1306
1307 rctl = er32(RCTL);
1308 rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
1309 ew32(RCTL, rctl);
1310
1311 switch (hw->mac.type) {
1312 case e1000_80003es2lan:
1313 if (hw->media_type == e1000_media_type_fiber ||
1314 hw->media_type == e1000_media_type_internal_serdes) {
1315 /* restore CTRL_EXT, stealing space from tx_fifo_head */
1316 ew32(CTRL_EXT,
1317 adapter->tx_fifo_head);
1318 adapter->tx_fifo_head = 0;
1319 }
1320 /* fall through */
1321 case e1000_82571:
1322 case e1000_82572:
1323 if (hw->media_type == e1000_media_type_fiber ||
1324 hw->media_type == e1000_media_type_internal_serdes) {
1325#define E1000_SERDES_LB_OFF 0x400
1326 ew32(SCTL, E1000_SERDES_LB_OFF);
1327 msleep(10);
1328 break;
1329 }
1330 /* Fall Through */
1331 default:
1332 hw->mac.autoneg = 1;
1333 if (hw->phy.type == e1000_phy_gg82563)
1334 e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x180);
1335 e1e_rphy(hw, PHY_CONTROL, &phy_reg);
1336 if (phy_reg & MII_CR_LOOPBACK) {
1337 phy_reg &= ~MII_CR_LOOPBACK;
1338 e1e_wphy(hw, PHY_CONTROL, phy_reg);
1339 e1000e_commit_phy(hw);
1340 }
1341 break;
1342 }
1343}
1344
1345static void e1000_create_lbtest_frame(struct sk_buff *skb,
1346 unsigned int frame_size)
1347{
1348 memset(skb->data, 0xFF, frame_size);
1349 frame_size &= ~1;
1350 memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
1351 memset(&skb->data[frame_size / 2 + 10], 0xBE, 1);
1352 memset(&skb->data[frame_size / 2 + 12], 0xAF, 1);
1353}
1354
1355static int e1000_check_lbtest_frame(struct sk_buff *skb,
1356 unsigned int frame_size)
1357{
1358 frame_size &= ~1;
1359 if (*(skb->data + 3) == 0xFF)
1360 if ((*(skb->data + frame_size / 2 + 10) == 0xBE) &&
1361 (*(skb->data + frame_size / 2 + 12) == 0xAF))
1362 return 0;
1363 return 13;
1364}
1365
1366static int e1000_run_loopback_test(struct e1000_adapter *adapter)
1367{
1368 struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1369 struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1370 struct pci_dev *pdev = adapter->pdev;
1371 struct e1000_hw *hw = &adapter->hw;
1372 int i, j, k, l;
1373 int lc;
1374 int good_cnt;
1375 int ret_val = 0;
1376 unsigned long time;
1377
1378 ew32(RDT, rx_ring->count - 1);
1379
1380 /* Calculate the loop count based on the largest descriptor ring
1381 * The idea is to wrap the largest ring a number of times using 64
1382 * send/receive pairs during each loop
1383 */
1384
1385 if (rx_ring->count <= tx_ring->count)
1386 lc = ((tx_ring->count / 64) * 2) + 1;
1387 else
1388 lc = ((rx_ring->count / 64) * 2) + 1;
1389
1390 k = 0;
1391 l = 0;
1392 for (j = 0; j <= lc; j++) { /* loop count loop */
1393 for (i = 0; i < 64; i++) { /* send the packets */
1394 e1000_create_lbtest_frame(
1395 tx_ring->buffer_info[i].skb, 1024);
1396 pci_dma_sync_single_for_device(pdev,
1397 tx_ring->buffer_info[k].dma,
1398 tx_ring->buffer_info[k].length,
1399 PCI_DMA_TODEVICE);
1400 k++;
1401 if (k == tx_ring->count)
1402 k = 0;
1403 }
1404 ew32(TDT, k);
1405 msleep(200);
1406 time = jiffies; /* set the start time for the receive */
1407 good_cnt = 0;
1408 do { /* receive the sent packets */
1409 pci_dma_sync_single_for_cpu(pdev,
1410 rx_ring->buffer_info[l].dma, 2048,
1411 PCI_DMA_FROMDEVICE);
1412
1413 ret_val = e1000_check_lbtest_frame(
1414 rx_ring->buffer_info[l].skb, 1024);
1415 if (!ret_val)
1416 good_cnt++;
1417 l++;
1418 if (l == rx_ring->count)
1419 l = 0;
1420 /* time + 20 msecs (200 msecs on 2.4) is more than
1421 * enough time to complete the receives, if it's
1422 * exceeded, break and error off
1423 */
1424 } while ((good_cnt < 64) && !time_after(jiffies, time + 20));
1425 if (good_cnt != 64) {
1426 ret_val = 13; /* ret_val is the same as mis-compare */
1427 break;
1428 }
1429 if (jiffies >= (time + 2)) {
1430 ret_val = 14; /* error code for time out error */
1431 break;
1432 }
1433 } /* end loop count loop */
1434 return ret_val;
1435}
1436
1437static int e1000_loopback_test(struct e1000_adapter *adapter, u64 *data)
1438{
1439 /* PHY loopback cannot be performed if SoL/IDER
1440 * sessions are active */
1441 if (e1000_check_reset_block(&adapter->hw)) {
1442 ndev_err(adapter->netdev, "Cannot do PHY loopback test "
1443 "when SoL/IDER is active.\n");
1444 *data = 0;
1445 goto out;
1446 }
1447
1448 *data = e1000_setup_desc_rings(adapter);
1449 if (data)
1450 goto out;
1451
1452 *data = e1000_setup_loopback_test(adapter);
1453 if (data)
1454 goto err_loopback;
1455
1456 *data = e1000_run_loopback_test(adapter);
1457 e1000_loopback_cleanup(adapter);
1458
1459err_loopback:
1460 e1000_free_desc_rings(adapter);
1461out:
1462 return *data;
1463}
1464
1465static int e1000_link_test(struct e1000_adapter *adapter, u64 *data)
1466{
1467 struct e1000_hw *hw = &adapter->hw;
1468
1469 *data = 0;
1470 if (hw->media_type == e1000_media_type_internal_serdes) {
1471 int i = 0;
1472 hw->mac.serdes_has_link = 0;
1473
1474 /* On some blade server designs, link establishment
1475 * could take as long as 2-3 minutes */
1476 do {
1477 hw->mac.ops.check_for_link(hw);
1478 if (hw->mac.serdes_has_link)
1479 return *data;
1480 msleep(20);
1481 } while (i++ < 3750);
1482
1483 *data = 1;
1484 } else {
1485 hw->mac.ops.check_for_link(hw);
1486 if (hw->mac.autoneg)
1487 msleep(4000);
1488
1489 if (!(er32(STATUS) &
1490 E1000_STATUS_LU))
1491 *data = 1;
1492 }
1493 return *data;
1494}
1495
1496static int e1000_diag_test_count(struct net_device *netdev)
1497{
1498 return E1000_TEST_LEN;
1499}
1500
1501static void e1000_diag_test(struct net_device *netdev,
1502 struct ethtool_test *eth_test, u64 *data)
1503{
1504 struct e1000_adapter *adapter = netdev_priv(netdev);
1505 u16 autoneg_advertised;
1506 u8 forced_speed_duplex;
1507 u8 autoneg;
1508 bool if_running = netif_running(netdev);
1509
1510 set_bit(__E1000_TESTING, &adapter->state);
1511 if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1512 /* Offline tests */
1513
1514 /* save speed, duplex, autoneg settings */
1515 autoneg_advertised = adapter->hw.phy.autoneg_advertised;
1516 forced_speed_duplex = adapter->hw.mac.forced_speed_duplex;
1517 autoneg = adapter->hw.mac.autoneg;
1518
1519 ndev_info(netdev, "offline testing starting\n");
1520
1521 /* Link test performed before hardware reset so autoneg doesn't
1522 * interfere with test result */
1523 if (e1000_link_test(adapter, &data[4]))
1524 eth_test->flags |= ETH_TEST_FL_FAILED;
1525
1526 if (if_running)
1527 /* indicate we're in test mode */
1528 dev_close(netdev);
1529 else
1530 e1000e_reset(adapter);
1531
1532 if (e1000_reg_test(adapter, &data[0]))
1533 eth_test->flags |= ETH_TEST_FL_FAILED;
1534
1535 e1000e_reset(adapter);
1536 if (e1000_eeprom_test(adapter, &data[1]))
1537 eth_test->flags |= ETH_TEST_FL_FAILED;
1538
1539 e1000e_reset(adapter);
1540 if (e1000_intr_test(adapter, &data[2]))
1541 eth_test->flags |= ETH_TEST_FL_FAILED;
1542
1543 e1000e_reset(adapter);
1544 /* make sure the phy is powered up */
1545 e1000e_power_up_phy(adapter);
1546 if (e1000_loopback_test(adapter, &data[3]))
1547 eth_test->flags |= ETH_TEST_FL_FAILED;
1548
1549 /* restore speed, duplex, autoneg settings */
1550 adapter->hw.phy.autoneg_advertised = autoneg_advertised;
1551 adapter->hw.mac.forced_speed_duplex = forced_speed_duplex;
1552 adapter->hw.mac.autoneg = autoneg;
1553
1554 /* force this routine to wait until autoneg complete/timeout */
1555 adapter->hw.phy.wait_for_link = 1;
1556 e1000e_reset(adapter);
1557 adapter->hw.phy.wait_for_link = 0;
1558
1559 clear_bit(__E1000_TESTING, &adapter->state);
1560 if (if_running)
1561 dev_open(netdev);
1562 } else {
1563 ndev_info(netdev, "online testing starting\n");
1564 /* Online tests */
1565 if (e1000_link_test(adapter, &data[4]))
1566 eth_test->flags |= ETH_TEST_FL_FAILED;
1567
1568 /* Online tests aren't run; pass by default */
1569 data[0] = 0;
1570 data[1] = 0;
1571 data[2] = 0;
1572 data[3] = 0;
1573
1574 clear_bit(__E1000_TESTING, &adapter->state);
1575 }
1576 msleep_interruptible(4 * 1000);
1577}
1578
1579static void e1000_get_wol(struct net_device *netdev,
1580 struct ethtool_wolinfo *wol)
1581{
1582 struct e1000_adapter *adapter = netdev_priv(netdev);
1583
1584 wol->supported = 0;
1585 wol->wolopts = 0;
1586
1587 if (!(adapter->flags & FLAG_HAS_WOL))
1588 return;
1589
1590 wol->supported = WAKE_UCAST | WAKE_MCAST |
1591 WAKE_BCAST | WAKE_MAGIC;
1592
1593 /* apply any specific unsupported masks here */
1594 if (adapter->flags & FLAG_NO_WAKE_UCAST) {
1595 wol->supported &= ~WAKE_UCAST;
1596
1597 if (adapter->wol & E1000_WUFC_EX)
1598 ndev_err(netdev, "Interface does not support "
1599 "directed (unicast) frame wake-up packets\n");
1600 }
1601
1602 if (adapter->wol & E1000_WUFC_EX)
1603 wol->wolopts |= WAKE_UCAST;
1604 if (adapter->wol & E1000_WUFC_MC)
1605 wol->wolopts |= WAKE_MCAST;
1606 if (adapter->wol & E1000_WUFC_BC)
1607 wol->wolopts |= WAKE_BCAST;
1608 if (adapter->wol & E1000_WUFC_MAG)
1609 wol->wolopts |= WAKE_MAGIC;
1610}
1611
1612static int e1000_set_wol(struct net_device *netdev,
1613 struct ethtool_wolinfo *wol)
1614{
1615 struct e1000_adapter *adapter = netdev_priv(netdev);
1616
1617 if (wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))
1618 return -EOPNOTSUPP;
1619
1620 if (!(adapter->flags & FLAG_HAS_WOL))
1621 return wol->wolopts ? -EOPNOTSUPP : 0;
1622
1623 /* these settings will always override what we currently have */
1624 adapter->wol = 0;
1625
1626 if (wol->wolopts & WAKE_UCAST)
1627 adapter->wol |= E1000_WUFC_EX;
1628 if (wol->wolopts & WAKE_MCAST)
1629 adapter->wol |= E1000_WUFC_MC;
1630 if (wol->wolopts & WAKE_BCAST)
1631 adapter->wol |= E1000_WUFC_BC;
1632 if (wol->wolopts & WAKE_MAGIC)
1633 adapter->wol |= E1000_WUFC_MAG;
1634
1635 return 0;
1636}
1637
1638/* toggle LED 4 times per second = 2 "blinks" per second */
1639#define E1000_ID_INTERVAL (HZ/4)
1640
1641/* bit defines for adapter->led_status */
1642#define E1000_LED_ON 0
1643
1644static void e1000_led_blink_callback(unsigned long data)
1645{
1646 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
1647
1648 if (test_and_change_bit(E1000_LED_ON, &adapter->led_status))
1649 adapter->hw.mac.ops.led_off(&adapter->hw);
1650 else
1651 adapter->hw.mac.ops.led_on(&adapter->hw);
1652
1653 mod_timer(&adapter->blink_timer, jiffies + E1000_ID_INTERVAL);
1654}
1655
1656static int e1000_phys_id(struct net_device *netdev, u32 data)
1657{
1658 struct e1000_adapter *adapter = netdev_priv(netdev);
1659
1660 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
1661 data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ);
1662
1663 if (adapter->hw.phy.type == e1000_phy_ife) {
1664 if (!adapter->blink_timer.function) {
1665 init_timer(&adapter->blink_timer);
1666 adapter->blink_timer.function =
1667 e1000_led_blink_callback;
1668 adapter->blink_timer.data = (unsigned long) adapter;
1669 }
1670 mod_timer(&adapter->blink_timer, jiffies);
1671 msleep_interruptible(data * 1000);
1672 del_timer_sync(&adapter->blink_timer);
1673 e1e_wphy(&adapter->hw,
1674 IFE_PHY_SPECIAL_CONTROL_LED, 0);
1675 } else {
1676 e1000e_blink_led(&adapter->hw);
1677 msleep_interruptible(data * 1000);
1678 }
1679
1680 adapter->hw.mac.ops.led_off(&adapter->hw);
1681 clear_bit(E1000_LED_ON, &adapter->led_status);
1682 adapter->hw.mac.ops.cleanup_led(&adapter->hw);
1683
1684 return 0;
1685}
1686
1687static int e1000_nway_reset(struct net_device *netdev)
1688{
1689 struct e1000_adapter *adapter = netdev_priv(netdev);
1690 if (netif_running(netdev))
1691 e1000e_reinit_locked(adapter);
1692 return 0;
1693}
1694
1695static int e1000_get_stats_count(struct net_device *netdev)
1696{
1697 return E1000_STATS_LEN;
1698}
1699
1700static void e1000_get_ethtool_stats(struct net_device *netdev,
1701 struct ethtool_stats *stats,
1702 u64 *data)
1703{
1704 struct e1000_adapter *adapter = netdev_priv(netdev);
1705 int i;
1706
1707 e1000e_update_stats(adapter);
1708 for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
1709 char *p = (char *)adapter+e1000_gstrings_stats[i].stat_offset;
1710 data[i] = (e1000_gstrings_stats[i].sizeof_stat ==
1711 sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
1712 }
1713}
1714
1715static void e1000_get_strings(struct net_device *netdev, u32 stringset,
1716 u8 *data)
1717{
1718 u8 *p = data;
1719 int i;
1720
1721 switch (stringset) {
1722 case ETH_SS_TEST:
1723 memcpy(data, *e1000_gstrings_test,
1724 E1000_TEST_LEN*ETH_GSTRING_LEN);
1725 break;
1726 case ETH_SS_STATS:
1727 for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
1728 memcpy(p, e1000_gstrings_stats[i].stat_string,
1729 ETH_GSTRING_LEN);
1730 p += ETH_GSTRING_LEN;
1731 }
1732 break;
1733 }
1734}
1735
1736static const struct ethtool_ops e1000_ethtool_ops = {
1737 .get_settings = e1000_get_settings,
1738 .set_settings = e1000_set_settings,
1739 .get_drvinfo = e1000_get_drvinfo,
1740 .get_regs_len = e1000_get_regs_len,
1741 .get_regs = e1000_get_regs,
1742 .get_wol = e1000_get_wol,
1743 .set_wol = e1000_set_wol,
1744 .get_msglevel = e1000_get_msglevel,
1745 .set_msglevel = e1000_set_msglevel,
1746 .nway_reset = e1000_nway_reset,
1747 .get_link = ethtool_op_get_link,
1748 .get_eeprom_len = e1000_get_eeprom_len,
1749 .get_eeprom = e1000_get_eeprom,
1750 .set_eeprom = e1000_set_eeprom,
1751 .get_ringparam = e1000_get_ringparam,
1752 .set_ringparam = e1000_set_ringparam,
1753 .get_pauseparam = e1000_get_pauseparam,
1754 .set_pauseparam = e1000_set_pauseparam,
1755 .get_rx_csum = e1000_get_rx_csum,
1756 .set_rx_csum = e1000_set_rx_csum,
1757 .get_tx_csum = e1000_get_tx_csum,
1758 .set_tx_csum = e1000_set_tx_csum,
1759 .get_sg = ethtool_op_get_sg,
1760 .set_sg = ethtool_op_set_sg,
1761 .get_tso = ethtool_op_get_tso,
1762 .set_tso = e1000_set_tso,
1763 .self_test_count = e1000_diag_test_count,
1764 .self_test = e1000_diag_test,
1765 .get_strings = e1000_get_strings,
1766 .phys_id = e1000_phys_id,
1767 .get_stats_count = e1000_get_stats_count,
1768 .get_ethtool_stats = e1000_get_ethtool_stats,
1769};
1770
1771void e1000e_set_ethtool_ops(struct net_device *netdev)
1772{
1773 SET_ETHTOOL_OPS(netdev, &e1000_ethtool_ops);
1774}
diff --git a/drivers/net/e1000e/hw.h b/drivers/net/e1000e/hw.h
new file mode 100644
index 000000000000..848217a38259
--- /dev/null
+++ b/drivers/net/e1000e/hw.h
@@ -0,0 +1,864 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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#ifndef _E1000_HW_H_
30#define _E1000_HW_H_
31
32#include <linux/types.h>
33
34struct e1000_hw;
35struct e1000_adapter;
36
37#include "defines.h"
38
39#define er32(reg) __er32(hw, E1000_##reg)
40#define ew32(reg,val) __ew32(hw, E1000_##reg, (val))
41#define e1e_flush() er32(STATUS)
42
43#define E1000_WRITE_REG_ARRAY(a, reg, offset, value) \
44 (writel((value), ((a)->hw_addr + reg + ((offset) << 2))))
45
46#define E1000_READ_REG_ARRAY(a, reg, offset) \
47 (readl((a)->hw_addr + reg + ((offset) << 2)))
48
49enum e1e_registers {
50 E1000_CTRL = 0x00000, /* Device Control - RW */
51 E1000_STATUS = 0x00008, /* Device Status - RO */
52 E1000_EECD = 0x00010, /* EEPROM/Flash Control - RW */
53 E1000_EERD = 0x00014, /* EEPROM Read - RW */
54 E1000_CTRL_EXT = 0x00018, /* Extended Device Control - RW */
55 E1000_FLA = 0x0001C, /* Flash Access - RW */
56 E1000_MDIC = 0x00020, /* MDI Control - RW */
57 E1000_SCTL = 0x00024, /* SerDes Control - RW */
58 E1000_FCAL = 0x00028, /* Flow Control Address Low - RW */
59 E1000_FCAH = 0x0002C, /* Flow Control Address High -RW */
60 E1000_FEXTNVM = 0x00028, /* Future Extended NVM - RW */
61 E1000_FCT = 0x00030, /* Flow Control Type - RW */
62 E1000_VET = 0x00038, /* VLAN Ether Type - RW */
63 E1000_ICR = 0x000C0, /* Interrupt Cause Read - R/clr */
64 E1000_ITR = 0x000C4, /* Interrupt Throttling Rate - RW */
65 E1000_ICS = 0x000C8, /* Interrupt Cause Set - WO */
66 E1000_IMS = 0x000D0, /* Interrupt Mask Set - RW */
67 E1000_IMC = 0x000D8, /* Interrupt Mask Clear - WO */
68 E1000_IAM = 0x000E0, /* Interrupt Acknowledge Auto Mask */
69 E1000_RCTL = 0x00100, /* RX Control - RW */
70 E1000_FCTTV = 0x00170, /* Flow Control Transmit Timer Value - RW */
71 E1000_TXCW = 0x00178, /* TX Configuration Word - RW */
72 E1000_RXCW = 0x00180, /* RX Configuration Word - RO */
73 E1000_TCTL = 0x00400, /* TX Control - RW */
74 E1000_TCTL_EXT = 0x00404, /* Extended TX Control - RW */
75 E1000_TIPG = 0x00410, /* TX Inter-packet gap -RW */
76 E1000_AIT = 0x00458, /* Adaptive Interframe Spacing Throttle - RW */
77 E1000_LEDCTL = 0x00E00, /* LED Control - RW */
78 E1000_EXTCNF_CTRL = 0x00F00, /* Extended Configuration Control */
79 E1000_EXTCNF_SIZE = 0x00F08, /* Extended Configuration Size */
80 E1000_PHY_CTRL = 0x00F10, /* PHY Control Register in CSR */
81 E1000_PBA = 0x01000, /* Packet Buffer Allocation - RW */
82 E1000_PBS = 0x01008, /* Packet Buffer Size */
83 E1000_EEMNGCTL = 0x01010, /* MNG EEprom Control */
84 E1000_EEWR = 0x0102C, /* EEPROM Write Register - RW */
85 E1000_FLOP = 0x0103C, /* FLASH Opcode Register */
86 E1000_ERT = 0x02008, /* Early Rx Threshold - RW */
87 E1000_FCRTL = 0x02160, /* Flow Control Receive Threshold Low - RW */
88 E1000_FCRTH = 0x02168, /* Flow Control Receive Threshold High - RW */
89 E1000_PSRCTL = 0x02170, /* Packet Split Receive Control - RW */
90 E1000_RDBAL = 0x02800, /* RX Descriptor Base Address Low - RW */
91 E1000_RDBAH = 0x02804, /* RX Descriptor Base Address High - RW */
92 E1000_RDLEN = 0x02808, /* RX Descriptor Length - RW */
93 E1000_RDH = 0x02810, /* RX Descriptor Head - RW */
94 E1000_RDT = 0x02818, /* RX Descriptor Tail - RW */
95 E1000_RDTR = 0x02820, /* RX Delay Timer - RW */
96 E1000_RADV = 0x0282C, /* RX Interrupt Absolute Delay Timer - RW */
97
98/* Convenience macros
99 *
100 * Note: "_n" is the queue number of the register to be written to.
101 *
102 * Example usage:
103 * E1000_RDBAL_REG(current_rx_queue)
104 *
105 */
106#define E1000_RDBAL_REG(_n) (E1000_RDBAL + (_n << 8))
107 E1000_KABGTXD = 0x03004, /* AFE Band Gap Transmit Ref Data */
108 E1000_TDBAL = 0x03800, /* TX Descriptor Base Address Low - RW */
109 E1000_TDBAH = 0x03804, /* TX Descriptor Base Address High - RW */
110 E1000_TDLEN = 0x03808, /* TX Descriptor Length - RW */
111 E1000_TDH = 0x03810, /* TX Descriptor Head - RW */
112 E1000_TDT = 0x03818, /* TX Descriptor Tail - RW */
113 E1000_TIDV = 0x03820, /* TX Interrupt Delay Value - RW */
114 E1000_TXDCTL = 0x03828, /* TX Descriptor Control - RW */
115 E1000_TADV = 0x0382C, /* TX Interrupt Absolute Delay Val - RW */
116 E1000_TARC0 = 0x03840, /* TX Arbitration Count (0) */
117 E1000_TXDCTL1 = 0x03928, /* TX Descriptor Control (1) - RW */
118 E1000_TARC1 = 0x03940, /* TX Arbitration Count (1) */
119 E1000_CRCERRS = 0x04000, /* CRC Error Count - R/clr */
120 E1000_ALGNERRC = 0x04004, /* Alignment Error Count - R/clr */
121 E1000_SYMERRS = 0x04008, /* Symbol Error Count - R/clr */
122 E1000_RXERRC = 0x0400C, /* Receive Error Count - R/clr */
123 E1000_MPC = 0x04010, /* Missed Packet Count - R/clr */
124 E1000_SCC = 0x04014, /* Single Collision Count - R/clr */
125 E1000_ECOL = 0x04018, /* Excessive Collision Count - R/clr */
126 E1000_MCC = 0x0401C, /* Multiple Collision Count - R/clr */
127 E1000_LATECOL = 0x04020, /* Late Collision Count - R/clr */
128 E1000_COLC = 0x04028, /* Collision Count - R/clr */
129 E1000_DC = 0x04030, /* Defer Count - R/clr */
130 E1000_TNCRS = 0x04034, /* TX-No CRS - R/clr */
131 E1000_SEC = 0x04038, /* Sequence Error Count - R/clr */
132 E1000_CEXTERR = 0x0403C, /* Carrier Extension Error Count - R/clr */
133 E1000_RLEC = 0x04040, /* Receive Length Error Count - R/clr */
134 E1000_XONRXC = 0x04048, /* XON RX Count - R/clr */
135 E1000_XONTXC = 0x0404C, /* XON TX Count - R/clr */
136 E1000_XOFFRXC = 0x04050, /* XOFF RX Count - R/clr */
137 E1000_XOFFTXC = 0x04054, /* XOFF TX Count - R/clr */
138 E1000_FCRUC = 0x04058, /* Flow Control RX Unsupported Count- R/clr */
139 E1000_PRC64 = 0x0405C, /* Packets RX (64 bytes) - R/clr */
140 E1000_PRC127 = 0x04060, /* Packets RX (65-127 bytes) - R/clr */
141 E1000_PRC255 = 0x04064, /* Packets RX (128-255 bytes) - R/clr */
142 E1000_PRC511 = 0x04068, /* Packets RX (255-511 bytes) - R/clr */
143 E1000_PRC1023 = 0x0406C, /* Packets RX (512-1023 bytes) - R/clr */
144 E1000_PRC1522 = 0x04070, /* Packets RX (1024-1522 bytes) - R/clr */
145 E1000_GPRC = 0x04074, /* Good Packets RX Count - R/clr */
146 E1000_BPRC = 0x04078, /* Broadcast Packets RX Count - R/clr */
147 E1000_MPRC = 0x0407C, /* Multicast Packets RX Count - R/clr */
148 E1000_GPTC = 0x04080, /* Good Packets TX Count - R/clr */
149 E1000_GORCL = 0x04088, /* Good Octets RX Count Low - R/clr */
150 E1000_GORCH = 0x0408C, /* Good Octets RX Count High - R/clr */
151 E1000_GOTCL = 0x04090, /* Good Octets TX Count Low - R/clr */
152 E1000_GOTCH = 0x04094, /* Good Octets TX Count High - R/clr */
153 E1000_RNBC = 0x040A0, /* RX No Buffers Count - R/clr */
154 E1000_RUC = 0x040A4, /* RX Undersize Count - R/clr */
155 E1000_RFC = 0x040A8, /* RX Fragment Count - R/clr */
156 E1000_ROC = 0x040AC, /* RX Oversize Count - R/clr */
157 E1000_RJC = 0x040B0, /* RX Jabber Count - R/clr */
158 E1000_MGTPRC = 0x040B4, /* Management Packets RX Count - R/clr */
159 E1000_MGTPDC = 0x040B8, /* Management Packets Dropped Count - R/clr */
160 E1000_MGTPTC = 0x040BC, /* Management Packets TX Count - R/clr */
161 E1000_TORL = 0x040C0, /* Total Octets RX Low - R/clr */
162 E1000_TORH = 0x040C4, /* Total Octets RX High - R/clr */
163 E1000_TOTL = 0x040C8, /* Total Octets TX Low - R/clr */
164 E1000_TOTH = 0x040CC, /* Total Octets TX High - R/clr */
165 E1000_TPR = 0x040D0, /* Total Packets RX - R/clr */
166 E1000_TPT = 0x040D4, /* Total Packets TX - R/clr */
167 E1000_PTC64 = 0x040D8, /* Packets TX (64 bytes) - R/clr */
168 E1000_PTC127 = 0x040DC, /* Packets TX (65-127 bytes) - R/clr */
169 E1000_PTC255 = 0x040E0, /* Packets TX (128-255 bytes) - R/clr */
170 E1000_PTC511 = 0x040E4, /* Packets TX (256-511 bytes) - R/clr */
171 E1000_PTC1023 = 0x040E8, /* Packets TX (512-1023 bytes) - R/clr */
172 E1000_PTC1522 = 0x040EC, /* Packets TX (1024-1522 Bytes) - R/clr */
173 E1000_MPTC = 0x040F0, /* Multicast Packets TX Count - R/clr */
174 E1000_BPTC = 0x040F4, /* Broadcast Packets TX Count - R/clr */
175 E1000_TSCTC = 0x040F8, /* TCP Segmentation Context TX - R/clr */
176 E1000_TSCTFC = 0x040FC, /* TCP Segmentation Context TX Fail - R/clr */
177 E1000_IAC = 0x04100, /* Interrupt Assertion Count */
178 E1000_ICRXPTC = 0x04104, /* Irq Cause Rx Packet Timer Expire Count */
179 E1000_ICRXATC = 0x04108, /* Irq Cause Rx Abs Timer Expire Count */
180 E1000_ICTXPTC = 0x0410C, /* Irq Cause Tx Packet Timer Expire Count */
181 E1000_ICTXATC = 0x04110, /* Irq Cause Tx Abs Timer Expire Count */
182 E1000_ICTXQEC = 0x04118, /* Irq Cause Tx Queue Empty Count */
183 E1000_ICTXQMTC = 0x0411C, /* Irq Cause Tx Queue MinThreshold Count */
184 E1000_ICRXDMTC = 0x04120, /* Irq Cause Rx Desc MinThreshold Count */
185 E1000_ICRXOC = 0x04124, /* Irq Cause Receiver Overrun Count */
186 E1000_RXCSUM = 0x05000, /* RX Checksum Control - RW */
187 E1000_RFCTL = 0x05008, /* Receive Filter Control*/
188 E1000_MTA = 0x05200, /* Multicast Table Array - RW Array */
189 E1000_RA = 0x05400, /* Receive Address - RW Array */
190 E1000_VFTA = 0x05600, /* VLAN Filter Table Array - RW Array */
191 E1000_WUC = 0x05800, /* Wakeup Control - RW */
192 E1000_WUFC = 0x05808, /* Wakeup Filter Control - RW */
193 E1000_WUS = 0x05810, /* Wakeup Status - RO */
194 E1000_MANC = 0x05820, /* Management Control - RW */
195 E1000_FFLT = 0x05F00, /* Flexible Filter Length Table - RW Array */
196 E1000_HOST_IF = 0x08800, /* Host Interface */
197
198 E1000_KMRNCTRLSTA = 0x00034, /* MAC-PHY interface - RW */
199 E1000_MANC2H = 0x05860, /* Management Control To Host - RW */
200 E1000_SW_FW_SYNC = 0x05B5C, /* Software-Firmware Synchronization - RW */
201 E1000_GCR = 0x05B00, /* PCI-Ex Control */
202 E1000_FACTPS = 0x05B30, /* Function Active and Power State to MNG */
203 E1000_SWSM = 0x05B50, /* SW Semaphore */
204 E1000_FWSM = 0x05B54, /* FW Semaphore */
205 E1000_HICR = 0x08F00, /* Host Inteface Control */
206};
207
208/* RSS registers */
209
210/* IGP01E1000 Specific Registers */
211#define IGP01E1000_PHY_PORT_CONFIG 0x10 /* Port Config */
212#define IGP01E1000_PHY_PORT_STATUS 0x11 /* Status */
213#define IGP01E1000_PHY_PORT_CTRL 0x12 /* Control */
214#define IGP01E1000_PHY_LINK_HEALTH 0x13 /* PHY Link Health */
215#define IGP02E1000_PHY_POWER_MGMT 0x19 /* Power Management */
216#define IGP01E1000_PHY_PAGE_SELECT 0x1F /* Page Select */
217
218#define IGP01E1000_PHY_PCS_INIT_REG 0x00B4
219#define IGP01E1000_PHY_POLARITY_MASK 0x0078
220
221#define IGP01E1000_PSCR_AUTO_MDIX 0x1000
222#define IGP01E1000_PSCR_FORCE_MDI_MDIX 0x2000 /* 0=MDI, 1=MDIX */
223
224#define IGP01E1000_PSCFR_SMART_SPEED 0x0080
225
226#define IGP02E1000_PM_SPD 0x0001 /* Smart Power Down */
227#define IGP02E1000_PM_D0_LPLU 0x0002 /* For D0a states */
228#define IGP02E1000_PM_D3_LPLU 0x0004 /* For all other states */
229
230#define IGP01E1000_PLHR_SS_DOWNGRADE 0x8000
231
232#define IGP01E1000_PSSR_POLARITY_REVERSED 0x0002
233#define IGP01E1000_PSSR_MDIX 0x0008
234#define IGP01E1000_PSSR_SPEED_MASK 0xC000
235#define IGP01E1000_PSSR_SPEED_1000MBPS 0xC000
236
237#define IGP02E1000_PHY_CHANNEL_NUM 4
238#define IGP02E1000_PHY_AGC_A 0x11B1
239#define IGP02E1000_PHY_AGC_B 0x12B1
240#define IGP02E1000_PHY_AGC_C 0x14B1
241#define IGP02E1000_PHY_AGC_D 0x18B1
242
243#define IGP02E1000_AGC_LENGTH_SHIFT 9 /* Course - 15:13, Fine - 12:9 */
244#define IGP02E1000_AGC_LENGTH_MASK 0x7F
245#define IGP02E1000_AGC_RANGE 15
246
247/* manage.c */
248#define E1000_VFTA_ENTRY_SHIFT 5
249#define E1000_VFTA_ENTRY_MASK 0x7F
250#define E1000_VFTA_ENTRY_BIT_SHIFT_MASK 0x1F
251
252#define E1000_HICR_EN 0x01 /* Enable bit - RO */
253#define E1000_HICR_C 0x02 /* Driver sets this bit when done
254 * to put command in RAM */
255#define E1000_HICR_FW_RESET_ENABLE 0x40
256#define E1000_HICR_FW_RESET 0x80
257
258#define E1000_FWSM_MODE_MASK 0xE
259#define E1000_FWSM_MODE_SHIFT 1
260
261#define E1000_MNG_IAMT_MODE 0x3
262#define E1000_MNG_DHCP_COOKIE_LENGTH 0x10
263#define E1000_MNG_DHCP_COOKIE_OFFSET 0x6F0
264#define E1000_MNG_DHCP_COMMAND_TIMEOUT 10
265#define E1000_MNG_DHCP_TX_PAYLOAD_CMD 64
266#define E1000_MNG_DHCP_COOKIE_STATUS_PARSING 0x1
267#define E1000_MNG_DHCP_COOKIE_STATUS_VLAN 0x2
268
269/* nvm.c */
270#define E1000_STM_OPCODE 0xDB00
271
272#define E1000_KMRNCTRLSTA_OFFSET 0x001F0000
273#define E1000_KMRNCTRLSTA_OFFSET_SHIFT 16
274#define E1000_KMRNCTRLSTA_REN 0x00200000
275#define E1000_KMRNCTRLSTA_DIAG_OFFSET 0x3 /* Kumeran Diagnostic */
276#define E1000_KMRNCTRLSTA_DIAG_NELPBK 0x1000 /* Nearend Loopback mode */
277
278#define IFE_PHY_EXTENDED_STATUS_CONTROL 0x10
279#define IFE_PHY_SPECIAL_CONTROL 0x11 /* 100BaseTx PHY Special Control */
280#define IFE_PHY_SPECIAL_CONTROL_LED 0x1B /* PHY Special and LED Control */
281#define IFE_PHY_MDIX_CONTROL 0x1C /* MDI/MDI-X Control */
282
283/* IFE PHY Extended Status Control */
284#define IFE_PESC_POLARITY_REVERSED 0x0100
285
286/* IFE PHY Special Control */
287#define IFE_PSC_AUTO_POLARITY_DISABLE 0x0010
288#define IFE_PSC_FORCE_POLARITY 0x0020
289
290/* IFE PHY Special Control and LED Control */
291#define IFE_PSCL_PROBE_MODE 0x0020
292#define IFE_PSCL_PROBE_LEDS_OFF 0x0006 /* Force LEDs 0 and 2 off */
293#define IFE_PSCL_PROBE_LEDS_ON 0x0007 /* Force LEDs 0 and 2 on */
294
295/* IFE PHY MDIX Control */
296#define IFE_PMC_MDIX_STATUS 0x0020 /* 1=MDI-X, 0=MDI */
297#define IFE_PMC_FORCE_MDIX 0x0040 /* 1=force MDI-X, 0=force MDI */
298#define IFE_PMC_AUTO_MDIX 0x0080 /* 1=enable auto MDI/MDI-X, 0=disable */
299
300#define E1000_CABLE_LENGTH_UNDEFINED 0xFF
301
302#define E1000_DEV_ID_82571EB_COPPER 0x105E
303#define E1000_DEV_ID_82571EB_FIBER 0x105F
304#define E1000_DEV_ID_82571EB_SERDES 0x1060
305#define E1000_DEV_ID_82571EB_QUAD_COPPER 0x10A4
306#define E1000_DEV_ID_82571EB_QUAD_FIBER 0x10A5
307#define E1000_DEV_ID_82571EB_QUAD_COPPER_LP 0x10BC
308#define E1000_DEV_ID_82572EI_COPPER 0x107D
309#define E1000_DEV_ID_82572EI_FIBER 0x107E
310#define E1000_DEV_ID_82572EI_SERDES 0x107F
311#define E1000_DEV_ID_82572EI 0x10B9
312#define E1000_DEV_ID_82573E 0x108B
313#define E1000_DEV_ID_82573E_IAMT 0x108C
314#define E1000_DEV_ID_82573L 0x109A
315
316#define E1000_DEV_ID_80003ES2LAN_COPPER_DPT 0x1096
317#define E1000_DEV_ID_80003ES2LAN_SERDES_DPT 0x1098
318#define E1000_DEV_ID_80003ES2LAN_COPPER_SPT 0x10BA
319#define E1000_DEV_ID_80003ES2LAN_SERDES_SPT 0x10BB
320
321#define E1000_DEV_ID_ICH8_IGP_M_AMT 0x1049
322#define E1000_DEV_ID_ICH8_IGP_AMT 0x104A
323#define E1000_DEV_ID_ICH8_IGP_C 0x104B
324#define E1000_DEV_ID_ICH8_IFE 0x104C
325#define E1000_DEV_ID_ICH8_IFE_GT 0x10C4
326#define E1000_DEV_ID_ICH8_IFE_G 0x10C5
327#define E1000_DEV_ID_ICH8_IGP_M 0x104D
328#define E1000_DEV_ID_ICH9_IGP_AMT 0x10BD
329#define E1000_DEV_ID_ICH9_IGP_C 0x294C
330#define E1000_DEV_ID_ICH9_IFE 0x10C0
331#define E1000_DEV_ID_ICH9_IFE_GT 0x10C3
332#define E1000_DEV_ID_ICH9_IFE_G 0x10C2
333
334#define E1000_FUNC_1 1
335
336enum e1000_mac_type {
337 e1000_82571,
338 e1000_82572,
339 e1000_82573,
340 e1000_80003es2lan,
341 e1000_ich8lan,
342 e1000_ich9lan,
343};
344
345enum e1000_media_type {
346 e1000_media_type_unknown = 0,
347 e1000_media_type_copper = 1,
348 e1000_media_type_fiber = 2,
349 e1000_media_type_internal_serdes = 3,
350 e1000_num_media_types
351};
352
353enum e1000_nvm_type {
354 e1000_nvm_unknown = 0,
355 e1000_nvm_none,
356 e1000_nvm_eeprom_spi,
357 e1000_nvm_flash_hw,
358 e1000_nvm_flash_sw
359};
360
361enum e1000_nvm_override {
362 e1000_nvm_override_none = 0,
363 e1000_nvm_override_spi_small,
364 e1000_nvm_override_spi_large
365};
366
367enum e1000_phy_type {
368 e1000_phy_unknown = 0,
369 e1000_phy_none,
370 e1000_phy_m88,
371 e1000_phy_igp,
372 e1000_phy_igp_2,
373 e1000_phy_gg82563,
374 e1000_phy_igp_3,
375 e1000_phy_ife,
376};
377
378enum e1000_bus_width {
379 e1000_bus_width_unknown = 0,
380 e1000_bus_width_pcie_x1,
381 e1000_bus_width_pcie_x2,
382 e1000_bus_width_pcie_x4 = 4,
383 e1000_bus_width_32,
384 e1000_bus_width_64,
385 e1000_bus_width_reserved
386};
387
388enum e1000_1000t_rx_status {
389 e1000_1000t_rx_status_not_ok = 0,
390 e1000_1000t_rx_status_ok,
391 e1000_1000t_rx_status_undefined = 0xFF
392};
393
394enum e1000_rev_polarity{
395 e1000_rev_polarity_normal = 0,
396 e1000_rev_polarity_reversed,
397 e1000_rev_polarity_undefined = 0xFF
398};
399
400enum e1000_fc_mode {
401 e1000_fc_none = 0,
402 e1000_fc_rx_pause,
403 e1000_fc_tx_pause,
404 e1000_fc_full,
405 e1000_fc_default = 0xFF
406};
407
408enum e1000_ms_type {
409 e1000_ms_hw_default = 0,
410 e1000_ms_force_master,
411 e1000_ms_force_slave,
412 e1000_ms_auto
413};
414
415enum e1000_smart_speed {
416 e1000_smart_speed_default = 0,
417 e1000_smart_speed_on,
418 e1000_smart_speed_off
419};
420
421/* Receive Descriptor */
422struct e1000_rx_desc {
423 u64 buffer_addr; /* Address of the descriptor's data buffer */
424 u16 length; /* Length of data DMAed into data buffer */
425 u16 csum; /* Packet checksum */
426 u8 status; /* Descriptor status */
427 u8 errors; /* Descriptor Errors */
428 u16 special;
429};
430
431/* Receive Descriptor - Extended */
432union e1000_rx_desc_extended {
433 struct {
434 u64 buffer_addr;
435 u64 reserved;
436 } read;
437 struct {
438 struct {
439 u32 mrq; /* Multiple Rx Queues */
440 union {
441 u32 rss; /* RSS Hash */
442 struct {
443 u16 ip_id; /* IP id */
444 u16 csum; /* Packet Checksum */
445 } csum_ip;
446 } hi_dword;
447 } lower;
448 struct {
449 u32 status_error; /* ext status/error */
450 u16 length;
451 u16 vlan; /* VLAN tag */
452 } upper;
453 } wb; /* writeback */
454};
455
456#define MAX_PS_BUFFERS 4
457/* Receive Descriptor - Packet Split */
458union e1000_rx_desc_packet_split {
459 struct {
460 /* one buffer for protocol header(s), three data buffers */
461 u64 buffer_addr[MAX_PS_BUFFERS];
462 } read;
463 struct {
464 struct {
465 u32 mrq; /* Multiple Rx Queues */
466 union {
467 u32 rss; /* RSS Hash */
468 struct {
469 u16 ip_id; /* IP id */
470 u16 csum; /* Packet Checksum */
471 } csum_ip;
472 } hi_dword;
473 } lower;
474 struct {
475 u32 status_error; /* ext status/error */
476 u16 length0; /* length of buffer 0 */
477 u16 vlan; /* VLAN tag */
478 } middle;
479 struct {
480 u16 header_status;
481 u16 length[3]; /* length of buffers 1-3 */
482 } upper;
483 u64 reserved;
484 } wb; /* writeback */
485};
486
487/* Transmit Descriptor */
488struct e1000_tx_desc {
489 u64 buffer_addr; /* Address of the descriptor's data buffer */
490 union {
491 u32 data;
492 struct {
493 u16 length; /* Data buffer length */
494 u8 cso; /* Checksum offset */
495 u8 cmd; /* Descriptor control */
496 } flags;
497 } lower;
498 union {
499 u32 data;
500 struct {
501 u8 status; /* Descriptor status */
502 u8 css; /* Checksum start */
503 u16 special;
504 } fields;
505 } upper;
506};
507
508/* Offload Context Descriptor */
509struct e1000_context_desc {
510 union {
511 u32 ip_config;
512 struct {
513 u8 ipcss; /* IP checksum start */
514 u8 ipcso; /* IP checksum offset */
515 u16 ipcse; /* IP checksum end */
516 } ip_fields;
517 } lower_setup;
518 union {
519 u32 tcp_config;
520 struct {
521 u8 tucss; /* TCP checksum start */
522 u8 tucso; /* TCP checksum offset */
523 u16 tucse; /* TCP checksum end */
524 } tcp_fields;
525 } upper_setup;
526 u32 cmd_and_length;
527 union {
528 u32 data;
529 struct {
530 u8 status; /* Descriptor status */
531 u8 hdr_len; /* Header length */
532 u16 mss; /* Maximum segment size */
533 } fields;
534 } tcp_seg_setup;
535};
536
537/* Offload data descriptor */
538struct e1000_data_desc {
539 u64 buffer_addr; /* Address of the descriptor's buffer address */
540 union {
541 u32 data;
542 struct {
543 u16 length; /* Data buffer length */
544 u8 typ_len_ext;
545 u8 cmd;
546 } flags;
547 } lower;
548 union {
549 u32 data;
550 struct {
551 u8 status; /* Descriptor status */
552 u8 popts; /* Packet Options */
553 u16 special; /* */
554 } fields;
555 } upper;
556};
557
558/* Statistics counters collected by the MAC */
559struct e1000_hw_stats {
560 u64 crcerrs;
561 u64 algnerrc;
562 u64 symerrs;
563 u64 rxerrc;
564 u64 mpc;
565 u64 scc;
566 u64 ecol;
567 u64 mcc;
568 u64 latecol;
569 u64 colc;
570 u64 dc;
571 u64 tncrs;
572 u64 sec;
573 u64 cexterr;
574 u64 rlec;
575 u64 xonrxc;
576 u64 xontxc;
577 u64 xoffrxc;
578 u64 xofftxc;
579 u64 fcruc;
580 u64 prc64;
581 u64 prc127;
582 u64 prc255;
583 u64 prc511;
584 u64 prc1023;
585 u64 prc1522;
586 u64 gprc;
587 u64 bprc;
588 u64 mprc;
589 u64 gptc;
590 u64 gorcl;
591 u64 gorch;
592 u64 gotcl;
593 u64 gotch;
594 u64 rnbc;
595 u64 ruc;
596 u64 rfc;
597 u64 roc;
598 u64 rjc;
599 u64 mgprc;
600 u64 mgpdc;
601 u64 mgptc;
602 u64 torl;
603 u64 torh;
604 u64 totl;
605 u64 toth;
606 u64 tpr;
607 u64 tpt;
608 u64 ptc64;
609 u64 ptc127;
610 u64 ptc255;
611 u64 ptc511;
612 u64 ptc1023;
613 u64 ptc1522;
614 u64 mptc;
615 u64 bptc;
616 u64 tsctc;
617 u64 tsctfc;
618 u64 iac;
619 u64 icrxptc;
620 u64 icrxatc;
621 u64 ictxptc;
622 u64 ictxatc;
623 u64 ictxqec;
624 u64 ictxqmtc;
625 u64 icrxdmtc;
626 u64 icrxoc;
627};
628
629struct e1000_phy_stats {
630 u32 idle_errors;
631 u32 receive_errors;
632};
633
634struct e1000_host_mng_dhcp_cookie {
635 u32 signature;
636 u8 status;
637 u8 reserved0;
638 u16 vlan_id;
639 u32 reserved1;
640 u16 reserved2;
641 u8 reserved3;
642 u8 checksum;
643};
644
645/* Host Interface "Rev 1" */
646struct e1000_host_command_header {
647 u8 command_id;
648 u8 command_length;
649 u8 command_options;
650 u8 checksum;
651};
652
653#define E1000_HI_MAX_DATA_LENGTH 252
654struct e1000_host_command_info {
655 struct e1000_host_command_header command_header;
656 u8 command_data[E1000_HI_MAX_DATA_LENGTH];
657};
658
659/* Host Interface "Rev 2" */
660struct e1000_host_mng_command_header {
661 u8 command_id;
662 u8 checksum;
663 u16 reserved1;
664 u16 reserved2;
665 u16 command_length;
666};
667
668#define E1000_HI_MAX_MNG_DATA_LENGTH 0x6F8
669struct e1000_host_mng_command_info {
670 struct e1000_host_mng_command_header command_header;
671 u8 command_data[E1000_HI_MAX_MNG_DATA_LENGTH];
672};
673
674/* Function pointers and static data for the MAC. */
675struct e1000_mac_operations {
676 u32 mng_mode_enab;
677
678 s32 (*check_for_link)(struct e1000_hw *);
679 s32 (*cleanup_led)(struct e1000_hw *);
680 void (*clear_hw_cntrs)(struct e1000_hw *);
681 s32 (*get_bus_info)(struct e1000_hw *);
682 s32 (*get_link_up_info)(struct e1000_hw *, u16 *, u16 *);
683 s32 (*led_on)(struct e1000_hw *);
684 s32 (*led_off)(struct e1000_hw *);
685 void (*mc_addr_list_update)(struct e1000_hw *, u8 *, u32, u32,
686 u32);
687 s32 (*reset_hw)(struct e1000_hw *);
688 s32 (*init_hw)(struct e1000_hw *);
689 s32 (*setup_link)(struct e1000_hw *);
690 s32 (*setup_physical_interface)(struct e1000_hw *);
691};
692
693/* Function pointers for the PHY. */
694struct e1000_phy_operations {
695 s32 (*acquire_phy)(struct e1000_hw *);
696 s32 (*check_reset_block)(struct e1000_hw *);
697 s32 (*commit_phy)(struct e1000_hw *);
698 s32 (*force_speed_duplex)(struct e1000_hw *);
699 s32 (*get_cfg_done)(struct e1000_hw *hw);
700 s32 (*get_cable_length)(struct e1000_hw *);
701 s32 (*get_phy_info)(struct e1000_hw *);
702 s32 (*read_phy_reg)(struct e1000_hw *, u32, u16 *);
703 void (*release_phy)(struct e1000_hw *);
704 s32 (*reset_phy)(struct e1000_hw *);
705 s32 (*set_d0_lplu_state)(struct e1000_hw *, bool);
706 s32 (*set_d3_lplu_state)(struct e1000_hw *, bool);
707 s32 (*write_phy_reg)(struct e1000_hw *, u32, u16);
708};
709
710/* Function pointers for the NVM. */
711struct e1000_nvm_operations {
712 s32 (*acquire_nvm)(struct e1000_hw *);
713 s32 (*read_nvm)(struct e1000_hw *, u16, u16, u16 *);
714 void (*release_nvm)(struct e1000_hw *);
715 s32 (*update_nvm)(struct e1000_hw *);
716 s32 (*valid_led_default)(struct e1000_hw *, u16 *);
717 s32 (*validate_nvm)(struct e1000_hw *);
718 s32 (*write_nvm)(struct e1000_hw *, u16, u16, u16 *);
719};
720
721struct e1000_mac_info {
722 struct e1000_mac_operations ops;
723
724 u8 addr[6];
725 u8 perm_addr[6];
726
727 enum e1000_mac_type type;
728 enum e1000_fc_mode fc;
729 enum e1000_fc_mode original_fc;
730
731 u32 collision_delta;
732 u32 ledctl_default;
733 u32 ledctl_mode1;
734 u32 ledctl_mode2;
735 u32 max_frame_size;
736 u32 mc_filter_type;
737 u32 min_frame_size;
738 u32 tx_packet_delta;
739 u32 txcw;
740
741 u16 current_ifs_val;
742 u16 ifs_max_val;
743 u16 ifs_min_val;
744 u16 ifs_ratio;
745 u16 ifs_step_size;
746 u16 mta_reg_count;
747 u16 rar_entry_count;
748 u16 fc_high_water;
749 u16 fc_low_water;
750 u16 fc_pause_time;
751
752 u8 forced_speed_duplex;
753
754 bool arc_subsystem_valid;
755 bool autoneg;
756 bool autoneg_failed;
757 bool get_link_status;
758 bool in_ifs_mode;
759 bool serdes_has_link;
760 bool tx_pkt_filtering;
761};
762
763struct e1000_phy_info {
764 struct e1000_phy_operations ops;
765
766 enum e1000_phy_type type;
767
768 enum e1000_1000t_rx_status local_rx;
769 enum e1000_1000t_rx_status remote_rx;
770 enum e1000_ms_type ms_type;
771 enum e1000_ms_type original_ms_type;
772 enum e1000_rev_polarity cable_polarity;
773 enum e1000_smart_speed smart_speed;
774
775 u32 addr;
776 u32 id;
777 u32 reset_delay_us; /* in usec */
778 u32 revision;
779
780 u16 autoneg_advertised;
781 u16 autoneg_mask;
782 u16 cable_length;
783 u16 max_cable_length;
784 u16 min_cable_length;
785
786 u8 mdix;
787
788 bool disable_polarity_correction;
789 bool is_mdix;
790 bool polarity_correction;
791 bool speed_downgraded;
792 bool wait_for_link;
793};
794
795struct e1000_nvm_info {
796 struct e1000_nvm_operations ops;
797
798 enum e1000_nvm_type type;
799 enum e1000_nvm_override override;
800
801 u32 flash_bank_size;
802 u32 flash_base_addr;
803
804 u16 word_size;
805 u16 delay_usec;
806 u16 address_bits;
807 u16 opcode_bits;
808 u16 page_size;
809};
810
811struct e1000_bus_info {
812 enum e1000_bus_width width;
813
814 u16 func;
815};
816
817struct e1000_dev_spec_82571 {
818 bool laa_is_present;
819};
820
821struct e1000_shadow_ram {
822 u16 value;
823 bool modified;
824};
825
826#define E1000_ICH8_SHADOW_RAM_WORDS 2048
827
828struct e1000_dev_spec_ich8lan {
829 bool kmrn_lock_loss_workaround_enabled;
830 struct e1000_shadow_ram shadow_ram[E1000_ICH8_SHADOW_RAM_WORDS];
831};
832
833struct e1000_hw {
834 struct e1000_adapter *adapter;
835
836 u8 __iomem *hw_addr;
837 u8 __iomem *flash_address;
838
839 struct e1000_mac_info mac;
840 struct e1000_phy_info phy;
841 struct e1000_nvm_info nvm;
842 struct e1000_bus_info bus;
843 struct e1000_host_mng_dhcp_cookie mng_cookie;
844
845 union {
846 struct e1000_dev_spec_82571 e82571;
847 struct e1000_dev_spec_ich8lan ich8lan;
848 } dev_spec;
849
850 enum e1000_media_type media_type;
851};
852
853#ifdef DEBUG
854#define hw_dbg(hw, format, arg...) \
855 printk(KERN_DEBUG, "%s: " format, e1000_get_hw_dev_name(hw), ##arg);
856#else
857static inline int __attribute__ ((format (printf, 2, 3)))
858hw_dbg(struct e1000_hw *hw, const char *format, ...)
859{
860 return 0;
861}
862#endif
863
864#endif
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
new file mode 100644
index 000000000000..8f8139de1f48
--- /dev/null
+++ b/drivers/net/e1000e/ich8lan.c
@@ -0,0 +1,2225 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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 * 82562G-2 10/100 Network Connection
31 * 82562GT 10/100 Network Connection
32 * 82562GT-2 10/100 Network Connection
33 * 82562V 10/100 Network Connection
34 * 82562V-2 10/100 Network Connection
35 * 82566DC-2 Gigabit Network Connection
36 * 82566DC Gigabit Network Connection
37 * 82566DM-2 Gigabit Network Connection
38 * 82566DM Gigabit Network Connection
39 * 82566MC Gigabit Network Connection
40 * 82566MM Gigabit Network Connection
41 */
42
43#include <linux/netdevice.h>
44#include <linux/ethtool.h>
45#include <linux/delay.h>
46#include <linux/pci.h>
47
48#include "e1000.h"
49
50#define ICH_FLASH_GFPREG 0x0000
51#define ICH_FLASH_HSFSTS 0x0004
52#define ICH_FLASH_HSFCTL 0x0006
53#define ICH_FLASH_FADDR 0x0008
54#define ICH_FLASH_FDATA0 0x0010
55
56#define ICH_FLASH_READ_COMMAND_TIMEOUT 500
57#define ICH_FLASH_WRITE_COMMAND_TIMEOUT 500
58#define ICH_FLASH_ERASE_COMMAND_TIMEOUT 3000000
59#define ICH_FLASH_LINEAR_ADDR_MASK 0x00FFFFFF
60#define ICH_FLASH_CYCLE_REPEAT_COUNT 10
61
62#define ICH_CYCLE_READ 0
63#define ICH_CYCLE_WRITE 2
64#define ICH_CYCLE_ERASE 3
65
66#define FLASH_GFPREG_BASE_MASK 0x1FFF
67#define FLASH_SECTOR_ADDR_SHIFT 12
68
69#define ICH_FLASH_SEG_SIZE_256 256
70#define ICH_FLASH_SEG_SIZE_4K 4096
71#define ICH_FLASH_SEG_SIZE_8K 8192
72#define ICH_FLASH_SEG_SIZE_64K 65536
73
74
75#define E1000_ICH_FWSM_RSPCIPHY 0x00000040 /* Reset PHY on PCI Reset */
76
77#define E1000_ICH_MNG_IAMT_MODE 0x2
78
79#define ID_LED_DEFAULT_ICH8LAN ((ID_LED_DEF1_DEF2 << 12) | \
80 (ID_LED_DEF1_OFF2 << 8) | \
81 (ID_LED_DEF1_ON2 << 4) | \
82 (ID_LED_DEF1_DEF2))
83
84#define E1000_ICH_NVM_SIG_WORD 0x13
85#define E1000_ICH_NVM_SIG_MASK 0xC000
86
87#define E1000_ICH8_LAN_INIT_TIMEOUT 1500
88
89#define E1000_FEXTNVM_SW_CONFIG 1
90#define E1000_FEXTNVM_SW_CONFIG_ICH8M (1 << 27) /* Bit redefined for ICH8M :/ */
91
92#define PCIE_ICH8_SNOOP_ALL PCIE_NO_SNOOP_ALL
93
94#define E1000_ICH_RAR_ENTRIES 7
95
96#define PHY_PAGE_SHIFT 5
97#define PHY_REG(page, reg) (((page) << PHY_PAGE_SHIFT) | \
98 ((reg) & MAX_PHY_REG_ADDRESS))
99#define IGP3_KMRN_DIAG PHY_REG(770, 19) /* KMRN Diagnostic */
100#define IGP3_VR_CTRL PHY_REG(776, 18) /* Voltage Regulator Control */
101
102#define IGP3_KMRN_DIAG_PCS_LOCK_LOSS 0x0002
103#define IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK 0x0300
104#define IGP3_VR_CTRL_MODE_SHUTDOWN 0x0200
105
106/* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
107/* Offset 04h HSFSTS */
108union ich8_hws_flash_status {
109 struct ich8_hsfsts {
110 u16 flcdone :1; /* bit 0 Flash Cycle Done */
111 u16 flcerr :1; /* bit 1 Flash Cycle Error */
112 u16 dael :1; /* bit 2 Direct Access error Log */
113 u16 berasesz :2; /* bit 4:3 Sector Erase Size */
114 u16 flcinprog :1; /* bit 5 flash cycle in Progress */
115 u16 reserved1 :2; /* bit 13:6 Reserved */
116 u16 reserved2 :6; /* bit 13:6 Reserved */
117 u16 fldesvalid :1; /* bit 14 Flash Descriptor Valid */
118 u16 flockdn :1; /* bit 15 Flash Config Lock-Down */
119 } hsf_status;
120 u16 regval;
121};
122
123/* ICH GbE Flash Hardware Sequencing Flash control Register bit breakdown */
124/* Offset 06h FLCTL */
125union ich8_hws_flash_ctrl {
126 struct ich8_hsflctl {
127 u16 flcgo :1; /* 0 Flash Cycle Go */
128 u16 flcycle :2; /* 2:1 Flash Cycle */
129 u16 reserved :5; /* 7:3 Reserved */
130 u16 fldbcount :2; /* 9:8 Flash Data Byte Count */
131 u16 flockdn :6; /* 15:10 Reserved */
132 } hsf_ctrl;
133 u16 regval;
134};
135
136/* ICH Flash Region Access Permissions */
137union ich8_hws_flash_regacc {
138 struct ich8_flracc {
139 u32 grra :8; /* 0:7 GbE region Read Access */
140 u32 grwa :8; /* 8:15 GbE region Write Access */
141 u32 gmrag :8; /* 23:16 GbE Master Read Access Grant */
142 u32 gmwag :8; /* 31:24 GbE Master Write Access Grant */
143 } hsf_flregacc;
144 u16 regval;
145};
146
147static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw);
148static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw);
149static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw);
150static s32 e1000_check_polarity_ife_ich8lan(struct e1000_hw *hw);
151static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank);
152static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
153 u32 offset, u8 byte);
154static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw, u32 offset,
155 u16 *data);
156static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
157 u8 size, u16 *data);
158static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw);
159static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw);
160
161static inline u16 __er16flash(struct e1000_hw *hw, unsigned long reg)
162{
163 return readw(hw->flash_address + reg);
164}
165
166static inline u32 __er32flash(struct e1000_hw *hw, unsigned long reg)
167{
168 return readl(hw->flash_address + reg);
169}
170
171static inline void __ew16flash(struct e1000_hw *hw, unsigned long reg, u16 val)
172{
173 writew(val, hw->flash_address + reg);
174}
175
176static inline void __ew32flash(struct e1000_hw *hw, unsigned long reg, u32 val)
177{
178 writel(val, hw->flash_address + reg);
179}
180
181#define er16flash(reg) __er16flash(hw, (reg))
182#define er32flash(reg) __er32flash(hw, (reg))
183#define ew16flash(reg,val) __ew16flash(hw, (reg), (val))
184#define ew32flash(reg,val) __ew32flash(hw, (reg), (val))
185
186/**
187 * e1000_init_phy_params_ich8lan - Initialize PHY function pointers
188 * @hw: pointer to the HW structure
189 *
190 * Initialize family-specific PHY parameters and function pointers.
191 **/
192static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
193{
194 struct e1000_phy_info *phy = &hw->phy;
195 s32 ret_val;
196 u16 i = 0;
197
198 phy->addr = 1;
199 phy->reset_delay_us = 100;
200
201 phy->id = 0;
202 while ((e1000_phy_unknown == e1000e_get_phy_type_from_id(phy->id)) &&
203 (i++ < 100)) {
204 msleep(1);
205 ret_val = e1000e_get_phy_id(hw);
206 if (ret_val)
207 return ret_val;
208 }
209
210 /* Verify phy id */
211 switch (phy->id) {
212 case IGP03E1000_E_PHY_ID:
213 phy->type = e1000_phy_igp_3;
214 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
215 break;
216 case IFE_E_PHY_ID:
217 case IFE_PLUS_E_PHY_ID:
218 case IFE_C_E_PHY_ID:
219 phy->type = e1000_phy_ife;
220 phy->autoneg_mask = E1000_ALL_NOT_GIG;
221 break;
222 default:
223 return -E1000_ERR_PHY;
224 break;
225 }
226
227 return 0;
228}
229
230/**
231 * e1000_init_nvm_params_ich8lan - Initialize NVM function pointers
232 * @hw: pointer to the HW structure
233 *
234 * Initialize family-specific NVM parameters and function
235 * pointers.
236 **/
237static s32 e1000_init_nvm_params_ich8lan(struct e1000_hw *hw)
238{
239 struct e1000_nvm_info *nvm = &hw->nvm;
240 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
241 u32 gfpreg;
242 u32 sector_base_addr;
243 u32 sector_end_addr;
244 u16 i;
245
246 /* Can't read flash registers if the register set isn't mapped.
247 */
248 if (!hw->flash_address) {
249 hw_dbg(hw, "ERROR: Flash registers not mapped\n");
250 return -E1000_ERR_CONFIG;
251 }
252
253 nvm->type = e1000_nvm_flash_sw;
254
255 gfpreg = er32flash(ICH_FLASH_GFPREG);
256
257 /* sector_X_addr is a "sector"-aligned address (4096 bytes)
258 * Add 1 to sector_end_addr since this sector is included in
259 * the overall size. */
260 sector_base_addr = gfpreg & FLASH_GFPREG_BASE_MASK;
261 sector_end_addr = ((gfpreg >> 16) & FLASH_GFPREG_BASE_MASK) + 1;
262
263 /* flash_base_addr is byte-aligned */
264 nvm->flash_base_addr = sector_base_addr << FLASH_SECTOR_ADDR_SHIFT;
265
266 /* find total size of the NVM, then cut in half since the total
267 * size represents two separate NVM banks. */
268 nvm->flash_bank_size = (sector_end_addr - sector_base_addr)
269 << FLASH_SECTOR_ADDR_SHIFT;
270 nvm->flash_bank_size /= 2;
271 /* Adjust to word count */
272 nvm->flash_bank_size /= sizeof(u16);
273
274 nvm->word_size = E1000_ICH8_SHADOW_RAM_WORDS;
275
276 /* Clear shadow ram */
277 for (i = 0; i < nvm->word_size; i++) {
278 dev_spec->shadow_ram[i].modified = 0;
279 dev_spec->shadow_ram[i].value = 0xFFFF;
280 }
281
282 return 0;
283}
284
285/**
286 * e1000_init_mac_params_ich8lan - Initialize MAC function pointers
287 * @hw: pointer to the HW structure
288 *
289 * Initialize family-specific MAC parameters and function
290 * pointers.
291 **/
292static s32 e1000_init_mac_params_ich8lan(struct e1000_adapter *adapter)
293{
294 struct e1000_hw *hw = &adapter->hw;
295 struct e1000_mac_info *mac = &hw->mac;
296
297 /* Set media type function pointer */
298 hw->media_type = e1000_media_type_copper;
299
300 /* Set mta register count */
301 mac->mta_reg_count = 32;
302 /* Set rar entry count */
303 mac->rar_entry_count = E1000_ICH_RAR_ENTRIES;
304 if (mac->type == e1000_ich8lan)
305 mac->rar_entry_count--;
306 /* Set if manageability features are enabled. */
307 mac->arc_subsystem_valid = 1;
308
309 /* Enable PCS Lock-loss workaround for ICH8 */
310 if (mac->type == e1000_ich8lan)
311 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, 1);
312
313 return 0;
314}
315
316static s32 e1000_get_invariants_ich8lan(struct e1000_adapter *adapter)
317{
318 struct e1000_hw *hw = &adapter->hw;
319 s32 rc;
320
321 rc = e1000_init_mac_params_ich8lan(adapter);
322 if (rc)
323 return rc;
324
325 rc = e1000_init_nvm_params_ich8lan(hw);
326 if (rc)
327 return rc;
328
329 rc = e1000_init_phy_params_ich8lan(hw);
330 if (rc)
331 return rc;
332
333 if ((adapter->hw.mac.type == e1000_ich8lan) &&
334 (adapter->hw.phy.type == e1000_phy_igp_3))
335 adapter->flags |= FLAG_LSC_GIG_SPEED_DROP;
336
337 return 0;
338}
339
340/**
341 * e1000_acquire_swflag_ich8lan - Acquire software control flag
342 * @hw: pointer to the HW structure
343 *
344 * Acquires the software control flag for performing NVM and PHY
345 * operations. This is a function pointer entry point only called by
346 * read/write routines for the PHY and NVM parts.
347 **/
348static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
349{
350 u32 extcnf_ctrl;
351 u32 timeout = PHY_CFG_TIMEOUT;
352
353 while (timeout) {
354 extcnf_ctrl = er32(EXTCNF_CTRL);
355 extcnf_ctrl |= E1000_EXTCNF_CTRL_SWFLAG;
356 ew32(EXTCNF_CTRL, extcnf_ctrl);
357
358 extcnf_ctrl = er32(EXTCNF_CTRL);
359 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG)
360 break;
361 mdelay(1);
362 timeout--;
363 }
364
365 if (!timeout) {
366 hw_dbg(hw, "FW or HW has locked the resource for too long.\n");
367 return -E1000_ERR_CONFIG;
368 }
369
370 return 0;
371}
372
373/**
374 * e1000_release_swflag_ich8lan - Release software control flag
375 * @hw: pointer to the HW structure
376 *
377 * Releases the software control flag for performing NVM and PHY operations.
378 * This is a function pointer entry point only called by read/write
379 * routines for the PHY and NVM parts.
380 **/
381static void e1000_release_swflag_ich8lan(struct e1000_hw *hw)
382{
383 u32 extcnf_ctrl;
384
385 extcnf_ctrl = er32(EXTCNF_CTRL);
386 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
387 ew32(EXTCNF_CTRL, extcnf_ctrl);
388}
389
390/**
391 * e1000_check_reset_block_ich8lan - Check if PHY reset is blocked
392 * @hw: pointer to the HW structure
393 *
394 * Checks if firmware is blocking the reset of the PHY.
395 * This is a function pointer entry point only called by
396 * reset routines.
397 **/
398static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
399{
400 u32 fwsm;
401
402 fwsm = er32(FWSM);
403
404 return (fwsm & E1000_ICH_FWSM_RSPCIPHY) ? 0 : E1000_BLK_PHY_RESET;
405}
406
407/**
408 * e1000_phy_force_speed_duplex_ich8lan - Force PHY speed & duplex
409 * @hw: pointer to the HW structure
410 *
411 * Forces the speed and duplex settings of the PHY.
412 * This is a function pointer entry point only called by
413 * PHY setup routines.
414 **/
415static s32 e1000_phy_force_speed_duplex_ich8lan(struct e1000_hw *hw)
416{
417 struct e1000_phy_info *phy = &hw->phy;
418 s32 ret_val;
419 u16 data;
420 bool link;
421
422 if (phy->type != e1000_phy_ife) {
423 ret_val = e1000e_phy_force_speed_duplex_igp(hw);
424 return ret_val;
425 }
426
427 ret_val = e1e_rphy(hw, PHY_CONTROL, &data);
428 if (ret_val)
429 return ret_val;
430
431 e1000e_phy_force_speed_duplex_setup(hw, &data);
432
433 ret_val = e1e_wphy(hw, PHY_CONTROL, data);
434 if (ret_val)
435 return ret_val;
436
437 /* Disable MDI-X support for 10/100 */
438 ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &data);
439 if (ret_val)
440 return ret_val;
441
442 data &= ~IFE_PMC_AUTO_MDIX;
443 data &= ~IFE_PMC_FORCE_MDIX;
444
445 ret_val = e1e_wphy(hw, IFE_PHY_MDIX_CONTROL, data);
446 if (ret_val)
447 return ret_val;
448
449 hw_dbg(hw, "IFE PMC: %X\n", data);
450
451 udelay(1);
452
453 if (phy->wait_for_link) {
454 hw_dbg(hw, "Waiting for forced speed/duplex link on IFE phy.\n");
455
456 ret_val = e1000e_phy_has_link_generic(hw,
457 PHY_FORCE_LIMIT,
458 100000,
459 &link);
460 if (ret_val)
461 return ret_val;
462
463 if (!link)
464 hw_dbg(hw, "Link taking longer than expected.\n");
465
466 /* Try once more */
467 ret_val = e1000e_phy_has_link_generic(hw,
468 PHY_FORCE_LIMIT,
469 100000,
470 &link);
471 if (ret_val)
472 return ret_val;
473 }
474
475 return 0;
476}
477
478/**
479 * e1000_phy_hw_reset_ich8lan - Performs a PHY reset
480 * @hw: pointer to the HW structure
481 *
482 * Resets the PHY
483 * This is a function pointer entry point called by drivers
484 * or other shared routines.
485 **/
486static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw)
487{
488 struct e1000_phy_info *phy = &hw->phy;
489 u32 i;
490 u32 data, cnf_size, cnf_base_addr, sw_cfg_mask;
491 s32 ret_val;
492 u16 loop = E1000_ICH8_LAN_INIT_TIMEOUT;
493 u16 word_addr, reg_data, reg_addr, phy_page = 0;
494
495 ret_val = e1000e_phy_hw_reset_generic(hw);
496 if (ret_val)
497 return ret_val;
498
499 /* Initialize the PHY from the NVM on ICH platforms. This
500 * is needed due to an issue where the NVM configuration is
501 * not properly autoloaded after power transitions.
502 * Therefore, after each PHY reset, we will load the
503 * configuration data out of the NVM manually.
504 */
505 if (hw->mac.type == e1000_ich8lan && phy->type == e1000_phy_igp_3) {
506 struct e1000_adapter *adapter = hw->adapter;
507
508 /* Check if SW needs configure the PHY */
509 if ((adapter->pdev->device == E1000_DEV_ID_ICH8_IGP_M_AMT) ||
510 (adapter->pdev->device == E1000_DEV_ID_ICH8_IGP_M))
511 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG_ICH8M;
512 else
513 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG;
514
515 data = er32(FEXTNVM);
516 if (!(data & sw_cfg_mask))
517 return 0;
518
519 /* Wait for basic configuration completes before proceeding*/
520 do {
521 data = er32(STATUS);
522 data &= E1000_STATUS_LAN_INIT_DONE;
523 udelay(100);
524 } while ((!data) && --loop);
525
526 /* If basic configuration is incomplete before the above loop
527 * count reaches 0, loading the configuration from NVM will
528 * leave the PHY in a bad state possibly resulting in no link.
529 */
530 if (loop == 0) {
531 hw_dbg(hw, "LAN_INIT_DONE not set, increase timeout\n");
532 }
533
534 /* Clear the Init Done bit for the next init event */
535 data = er32(STATUS);
536 data &= ~E1000_STATUS_LAN_INIT_DONE;
537 ew32(STATUS, data);
538
539 /* Make sure HW does not configure LCD from PHY
540 * extended configuration before SW configuration */
541 data = er32(EXTCNF_CTRL);
542 if (data & E1000_EXTCNF_CTRL_LCD_WRITE_ENABLE)
543 return 0;
544
545 cnf_size = er32(EXTCNF_SIZE);
546 cnf_size &= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_MASK;
547 cnf_size >>= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_SHIFT;
548 if (!cnf_size)
549 return 0;
550
551 cnf_base_addr = data & E1000_EXTCNF_CTRL_EXT_CNF_POINTER_MASK;
552 cnf_base_addr >>= E1000_EXTCNF_CTRL_EXT_CNF_POINTER_SHIFT;
553
554 /* Configure LCD from extended configuration
555 * region. */
556
557 /* cnf_base_addr is in DWORD */
558 word_addr = (u16)(cnf_base_addr << 1);
559
560 for (i = 0; i < cnf_size; i++) {
561 ret_val = e1000_read_nvm(hw,
562 (word_addr + i * 2),
563 1,
564 &reg_data);
565 if (ret_val)
566 return ret_val;
567
568 ret_val = e1000_read_nvm(hw,
569 (word_addr + i * 2 + 1),
570 1,
571 &reg_addr);
572 if (ret_val)
573 return ret_val;
574
575 /* Save off the PHY page for future writes. */
576 if (reg_addr == IGP01E1000_PHY_PAGE_SELECT) {
577 phy_page = reg_data;
578 continue;
579 }
580
581 reg_addr |= phy_page;
582
583 ret_val = e1e_wphy(hw, (u32)reg_addr, reg_data);
584 if (ret_val)
585 return ret_val;
586 }
587 }
588
589 return 0;
590}
591
592/**
593 * e1000_get_phy_info_ife_ich8lan - Retrieves various IFE PHY states
594 * @hw: pointer to the HW structure
595 *
596 * Populates "phy" structure with various feature states.
597 * This function is only called by other family-specific
598 * routines.
599 **/
600static s32 e1000_get_phy_info_ife_ich8lan(struct e1000_hw *hw)
601{
602 struct e1000_phy_info *phy = &hw->phy;
603 s32 ret_val;
604 u16 data;
605 bool link;
606
607 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
608 if (ret_val)
609 return ret_val;
610
611 if (!link) {
612 hw_dbg(hw, "Phy info is only valid if link is up\n");
613 return -E1000_ERR_CONFIG;
614 }
615
616 ret_val = e1e_rphy(hw, IFE_PHY_SPECIAL_CONTROL, &data);
617 if (ret_val)
618 return ret_val;
619 phy->polarity_correction = (!(data & IFE_PSC_AUTO_POLARITY_DISABLE));
620
621 if (phy->polarity_correction) {
622 ret_val = e1000_check_polarity_ife_ich8lan(hw);
623 if (ret_val)
624 return ret_val;
625 } else {
626 /* Polarity is forced */
627 phy->cable_polarity = (data & IFE_PSC_FORCE_POLARITY)
628 ? e1000_rev_polarity_reversed
629 : e1000_rev_polarity_normal;
630 }
631
632 ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &data);
633 if (ret_val)
634 return ret_val;
635
636 phy->is_mdix = (data & IFE_PMC_MDIX_STATUS);
637
638 /* The following parameters are undefined for 10/100 operation. */
639 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
640 phy->local_rx = e1000_1000t_rx_status_undefined;
641 phy->remote_rx = e1000_1000t_rx_status_undefined;
642
643 return 0;
644}
645
646/**
647 * e1000_get_phy_info_ich8lan - Calls appropriate PHY type get_phy_info
648 * @hw: pointer to the HW structure
649 *
650 * Wrapper for calling the get_phy_info routines for the appropriate phy type.
651 * This is a function pointer entry point called by drivers
652 * or other shared routines.
653 **/
654static s32 e1000_get_phy_info_ich8lan(struct e1000_hw *hw)
655{
656 switch (hw->phy.type) {
657 case e1000_phy_ife:
658 return e1000_get_phy_info_ife_ich8lan(hw);
659 break;
660 case e1000_phy_igp_3:
661 return e1000e_get_phy_info_igp(hw);
662 break;
663 default:
664 break;
665 }
666
667 return -E1000_ERR_PHY_TYPE;
668}
669
670/**
671 * e1000_check_polarity_ife_ich8lan - Check cable polarity for IFE PHY
672 * @hw: pointer to the HW structure
673 *
674 * Polarity is determined on the polarity reveral feature being enabled.
675 * This function is only called by other family-specific
676 * routines.
677 **/
678static s32 e1000_check_polarity_ife_ich8lan(struct e1000_hw *hw)
679{
680 struct e1000_phy_info *phy = &hw->phy;
681 s32 ret_val;
682 u16 phy_data, offset, mask;
683
684 /* Polarity is determined based on the reversal feature
685 * being enabled.
686 */
687 if (phy->polarity_correction) {
688 offset = IFE_PHY_EXTENDED_STATUS_CONTROL;
689 mask = IFE_PESC_POLARITY_REVERSED;
690 } else {
691 offset = IFE_PHY_SPECIAL_CONTROL;
692 mask = IFE_PSC_FORCE_POLARITY;
693 }
694
695 ret_val = e1e_rphy(hw, offset, &phy_data);
696
697 if (!ret_val)
698 phy->cable_polarity = (phy_data & mask)
699 ? e1000_rev_polarity_reversed
700 : e1000_rev_polarity_normal;
701
702 return ret_val;
703}
704
705/**
706 * e1000_set_d0_lplu_state_ich8lan - Set Low Power Linkup D0 state
707 * @hw: pointer to the HW structure
708 * @active: TRUE to enable LPLU, FALSE to disable
709 *
710 * Sets the LPLU D0 state according to the active flag. When
711 * activating LPLU this function also disables smart speed
712 * and vice versa. LPLU will not be activated unless the
713 * device autonegotiation advertisement meets standards of
714 * either 10 or 10/100 or 10/100/1000 at all duplexes.
715 * This is a function pointer entry point only called by
716 * PHY setup routines.
717 **/
718static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
719{
720 struct e1000_phy_info *phy = &hw->phy;
721 u32 phy_ctrl;
722 s32 ret_val = 0;
723 u16 data;
724
725 if (phy->type != e1000_phy_igp_3)
726 return ret_val;
727
728 phy_ctrl = er32(PHY_CTRL);
729
730 if (active) {
731 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
732 ew32(PHY_CTRL, phy_ctrl);
733
734 /* Call gig speed drop workaround on LPLU before accessing
735 * any PHY registers */
736 if ((hw->mac.type == e1000_ich8lan) &&
737 (hw->phy.type == e1000_phy_igp_3))
738 e1000e_gig_downshift_workaround_ich8lan(hw);
739
740 /* When LPLU is enabled, we should disable SmartSpeed */
741 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
742 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
743 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
744 if (ret_val)
745 return ret_val;
746 } else {
747 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
748 ew32(PHY_CTRL, phy_ctrl);
749
750 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
751 * during Dx states where the power conservation is most
752 * important. During driver activity we should enable
753 * SmartSpeed, so performance is maintained. */
754 if (phy->smart_speed == e1000_smart_speed_on) {
755 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
756 &data);
757 if (ret_val)
758 return ret_val;
759
760 data |= IGP01E1000_PSCFR_SMART_SPEED;
761 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
762 data);
763 if (ret_val)
764 return ret_val;
765 } else if (phy->smart_speed == e1000_smart_speed_off) {
766 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
767 &data);
768 if (ret_val)
769 return ret_val;
770
771 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
772 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
773 data);
774 if (ret_val)
775 return ret_val;
776 }
777 }
778
779 return 0;
780}
781
782/**
783 * e1000_set_d3_lplu_state_ich8lan - Set Low Power Linkup D3 state
784 * @hw: pointer to the HW structure
785 * @active: TRUE to enable LPLU, FALSE to disable
786 *
787 * Sets the LPLU D3 state according to the active flag. When
788 * activating LPLU this function also disables smart speed
789 * and vice versa. LPLU will not be activated unless the
790 * device autonegotiation advertisement meets standards of
791 * either 10 or 10/100 or 10/100/1000 at all duplexes.
792 * This is a function pointer entry point only called by
793 * PHY setup routines.
794 **/
795static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
796{
797 struct e1000_phy_info *phy = &hw->phy;
798 u32 phy_ctrl;
799 s32 ret_val;
800 u16 data;
801
802 phy_ctrl = er32(PHY_CTRL);
803
804 if (!active) {
805 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
806 ew32(PHY_CTRL, phy_ctrl);
807 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
808 * during Dx states where the power conservation is most
809 * important. During driver activity we should enable
810 * SmartSpeed, so performance is maintained. */
811 if (phy->smart_speed == e1000_smart_speed_on) {
812 ret_val = e1e_rphy(hw,
813 IGP01E1000_PHY_PORT_CONFIG,
814 &data);
815 if (ret_val)
816 return ret_val;
817
818 data |= IGP01E1000_PSCFR_SMART_SPEED;
819 ret_val = e1e_wphy(hw,
820 IGP01E1000_PHY_PORT_CONFIG,
821 data);
822 if (ret_val)
823 return ret_val;
824 } else if (phy->smart_speed == e1000_smart_speed_off) {
825 ret_val = e1e_rphy(hw,
826 IGP01E1000_PHY_PORT_CONFIG,
827 &data);
828 if (ret_val)
829 return ret_val;
830
831 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
832 ret_val = e1e_wphy(hw,
833 IGP01E1000_PHY_PORT_CONFIG,
834 data);
835 if (ret_val)
836 return ret_val;
837 }
838 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
839 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
840 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
841 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
842 ew32(PHY_CTRL, phy_ctrl);
843
844 /* Call gig speed drop workaround on LPLU before accessing
845 * any PHY registers */
846 if ((hw->mac.type == e1000_ich8lan) &&
847 (hw->phy.type == e1000_phy_igp_3))
848 e1000e_gig_downshift_workaround_ich8lan(hw);
849
850 /* When LPLU is enabled, we should disable SmartSpeed */
851 ret_val = e1e_rphy(hw,
852 IGP01E1000_PHY_PORT_CONFIG,
853 &data);
854 if (ret_val)
855 return ret_val;
856
857 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
858 ret_val = e1e_wphy(hw,
859 IGP01E1000_PHY_PORT_CONFIG,
860 data);
861 }
862
863 return 0;
864}
865
866/**
867 * e1000_read_nvm_ich8lan - Read word(s) from the NVM
868 * @hw: pointer to the HW structure
869 * @offset: The offset (in bytes) of the word(s) to read.
870 * @words: Size of data to read in words
871 * @data: Pointer to the word(s) to read at offset.
872 *
873 * Reads a word(s) from the NVM using the flash access registers.
874 **/
875static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
876 u16 *data)
877{
878 struct e1000_nvm_info *nvm = &hw->nvm;
879 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
880 u32 act_offset;
881 s32 ret_val;
882 u16 i, word;
883
884 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
885 (words == 0)) {
886 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
887 return -E1000_ERR_NVM;
888 }
889
890 ret_val = e1000_acquire_swflag_ich8lan(hw);
891 if (ret_val)
892 return ret_val;
893
894 /* Start with the bank offset, then add the relative offset. */
895 act_offset = (er32(EECD) & E1000_EECD_SEC1VAL)
896 ? nvm->flash_bank_size
897 : 0;
898 act_offset += offset;
899
900 for (i = 0; i < words; i++) {
901 if ((dev_spec->shadow_ram) &&
902 (dev_spec->shadow_ram[offset+i].modified)) {
903 data[i] = dev_spec->shadow_ram[offset+i].value;
904 } else {
905 ret_val = e1000_read_flash_word_ich8lan(hw,
906 act_offset + i,
907 &word);
908 if (ret_val)
909 break;
910 data[i] = word;
911 }
912 }
913
914 e1000_release_swflag_ich8lan(hw);
915
916 return ret_val;
917}
918
919/**
920 * e1000_flash_cycle_init_ich8lan - Initialize flash
921 * @hw: pointer to the HW structure
922 *
923 * This function does initial flash setup so that a new read/write/erase cycle
924 * can be started.
925 **/
926static s32 e1000_flash_cycle_init_ich8lan(struct e1000_hw *hw)
927{
928 union ich8_hws_flash_status hsfsts;
929 s32 ret_val = -E1000_ERR_NVM;
930 s32 i = 0;
931
932 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
933
934 /* Check if the flash descriptor is valid */
935 if (hsfsts.hsf_status.fldesvalid == 0) {
936 hw_dbg(hw, "Flash descriptor invalid. "
937 "SW Sequencing must be used.");
938 return -E1000_ERR_NVM;
939 }
940
941 /* Clear FCERR and DAEL in hw status by writing 1 */
942 hsfsts.hsf_status.flcerr = 1;
943 hsfsts.hsf_status.dael = 1;
944
945 ew16flash(ICH_FLASH_HSFSTS, hsfsts.regval);
946
947 /* Either we should have a hardware SPI cycle in progress
948 * bit to check against, in order to start a new cycle or
949 * FDONE bit should be changed in the hardware so that it
950 * is 1 after harware reset, which can then be used as an
951 * indication whether a cycle is in progress or has been
952 * completed.
953 */
954
955 if (hsfsts.hsf_status.flcinprog == 0) {
956 /* There is no cycle running at present,
957 * so we can start a cycle */
958 /* Begin by setting Flash Cycle Done. */
959 hsfsts.hsf_status.flcdone = 1;
960 ew16flash(ICH_FLASH_HSFSTS, hsfsts.regval);
961 ret_val = 0;
962 } else {
963 /* otherwise poll for sometime so the current
964 * cycle has a chance to end before giving up. */
965 for (i = 0; i < ICH_FLASH_READ_COMMAND_TIMEOUT; i++) {
966 hsfsts.regval = __er16flash(hw, ICH_FLASH_HSFSTS);
967 if (hsfsts.hsf_status.flcinprog == 0) {
968 ret_val = 0;
969 break;
970 }
971 udelay(1);
972 }
973 if (ret_val == 0) {
974 /* Successful in waiting for previous cycle to timeout,
975 * now set the Flash Cycle Done. */
976 hsfsts.hsf_status.flcdone = 1;
977 ew16flash(ICH_FLASH_HSFSTS, hsfsts.regval);
978 } else {
979 hw_dbg(hw, "Flash controller busy, cannot get access");
980 }
981 }
982
983 return ret_val;
984}
985
986/**
987 * e1000_flash_cycle_ich8lan - Starts flash cycle (read/write/erase)
988 * @hw: pointer to the HW structure
989 * @timeout: maximum time to wait for completion
990 *
991 * This function starts a flash cycle and waits for its completion.
992 **/
993static s32 e1000_flash_cycle_ich8lan(struct e1000_hw *hw, u32 timeout)
994{
995 union ich8_hws_flash_ctrl hsflctl;
996 union ich8_hws_flash_status hsfsts;
997 s32 ret_val = -E1000_ERR_NVM;
998 u32 i = 0;
999
1000 /* Start a cycle by writing 1 in Flash Cycle Go in Hw Flash Control */
1001 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
1002 hsflctl.hsf_ctrl.flcgo = 1;
1003 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
1004
1005 /* wait till FDONE bit is set to 1 */
1006 do {
1007 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
1008 if (hsfsts.hsf_status.flcdone == 1)
1009 break;
1010 udelay(1);
1011 } while (i++ < timeout);
1012
1013 if (hsfsts.hsf_status.flcdone == 1 && hsfsts.hsf_status.flcerr == 0)
1014 return 0;
1015
1016 return ret_val;
1017}
1018
1019/**
1020 * e1000_read_flash_word_ich8lan - Read word from flash
1021 * @hw: pointer to the HW structure
1022 * @offset: offset to data location
1023 * @data: pointer to the location for storing the data
1024 *
1025 * Reads the flash word at offset into data. Offset is converted
1026 * to bytes before read.
1027 **/
1028static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw, u32 offset,
1029 u16 *data)
1030{
1031 /* Must convert offset into bytes. */
1032 offset <<= 1;
1033
1034 return e1000_read_flash_data_ich8lan(hw, offset, 2, data);
1035}
1036
1037/**
1038 * e1000_read_flash_data_ich8lan - Read byte or word from NVM
1039 * @hw: pointer to the HW structure
1040 * @offset: The offset (in bytes) of the byte or word to read.
1041 * @size: Size of data to read, 1=byte 2=word
1042 * @data: Pointer to the word to store the value read.
1043 *
1044 * Reads a byte or word from the NVM using the flash access registers.
1045 **/
1046static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
1047 u8 size, u16 *data)
1048{
1049 union ich8_hws_flash_status hsfsts;
1050 union ich8_hws_flash_ctrl hsflctl;
1051 u32 flash_linear_addr;
1052 u32 flash_data = 0;
1053 s32 ret_val = -E1000_ERR_NVM;
1054 u8 count = 0;
1055
1056 if (size < 1 || size > 2 || offset > ICH_FLASH_LINEAR_ADDR_MASK)
1057 return -E1000_ERR_NVM;
1058
1059 flash_linear_addr = (ICH_FLASH_LINEAR_ADDR_MASK & offset) +
1060 hw->nvm.flash_base_addr;
1061
1062 do {
1063 udelay(1);
1064 /* Steps */
1065 ret_val = e1000_flash_cycle_init_ich8lan(hw);
1066 if (ret_val != 0)
1067 break;
1068
1069 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
1070 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
1071 hsflctl.hsf_ctrl.fldbcount = size - 1;
1072 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_READ;
1073 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
1074
1075 ew32flash(ICH_FLASH_FADDR, flash_linear_addr);
1076
1077 ret_val = e1000_flash_cycle_ich8lan(hw,
1078 ICH_FLASH_READ_COMMAND_TIMEOUT);
1079
1080 /* Check if FCERR is set to 1, if set to 1, clear it
1081 * and try the whole sequence a few more times, else
1082 * read in (shift in) the Flash Data0, the order is
1083 * least significant byte first msb to lsb */
1084 if (ret_val == 0) {
1085 flash_data = er32flash(ICH_FLASH_FDATA0);
1086 if (size == 1) {
1087 *data = (u8)(flash_data & 0x000000FF);
1088 } else if (size == 2) {
1089 *data = (u16)(flash_data & 0x0000FFFF);
1090 }
1091 break;
1092 } else {
1093 /* If we've gotten here, then things are probably
1094 * completely hosed, but if the error condition is
1095 * detected, it won't hurt to give it another try...
1096 * ICH_FLASH_CYCLE_REPEAT_COUNT times.
1097 */
1098 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
1099 if (hsfsts.hsf_status.flcerr == 1) {
1100 /* Repeat for some time before giving up. */
1101 continue;
1102 } else if (hsfsts.hsf_status.flcdone == 0) {
1103 hw_dbg(hw, "Timeout error - flash cycle "
1104 "did not complete.");
1105 break;
1106 }
1107 }
1108 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
1109
1110 return ret_val;
1111}
1112
1113/**
1114 * e1000_write_nvm_ich8lan - Write word(s) to the NVM
1115 * @hw: pointer to the HW structure
1116 * @offset: The offset (in bytes) of the word(s) to write.
1117 * @words: Size of data to write in words
1118 * @data: Pointer to the word(s) to write at offset.
1119 *
1120 * Writes a byte or word to the NVM using the flash access registers.
1121 **/
1122static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
1123 u16 *data)
1124{
1125 struct e1000_nvm_info *nvm = &hw->nvm;
1126 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
1127 s32 ret_val;
1128 u16 i;
1129
1130 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
1131 (words == 0)) {
1132 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
1133 return -E1000_ERR_NVM;
1134 }
1135
1136 ret_val = e1000_acquire_swflag_ich8lan(hw);
1137 if (ret_val)
1138 return ret_val;
1139
1140 for (i = 0; i < words; i++) {
1141 dev_spec->shadow_ram[offset+i].modified = 1;
1142 dev_spec->shadow_ram[offset+i].value = data[i];
1143 }
1144
1145 e1000_release_swflag_ich8lan(hw);
1146
1147 return 0;
1148}
1149
1150/**
1151 * e1000_update_nvm_checksum_ich8lan - Update the checksum for NVM
1152 * @hw: pointer to the HW structure
1153 *
1154 * The NVM checksum is updated by calling the generic update_nvm_checksum,
1155 * which writes the checksum to the shadow ram. The changes in the shadow
1156 * ram are then committed to the EEPROM by processing each bank at a time
1157 * checking for the modified bit and writing only the pending changes.
1158 * After a succesful commit, the shadow ram is cleared and is ready for
1159 * future writes.
1160 **/
1161static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
1162{
1163 struct e1000_nvm_info *nvm = &hw->nvm;
1164 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
1165 u32 i, act_offset, new_bank_offset, old_bank_offset;
1166 s32 ret_val;
1167 u16 data;
1168
1169 ret_val = e1000e_update_nvm_checksum_generic(hw);
1170 if (ret_val)
1171 return ret_val;;
1172
1173 if (nvm->type != e1000_nvm_flash_sw)
1174 return ret_val;;
1175
1176 ret_val = e1000_acquire_swflag_ich8lan(hw);
1177 if (ret_val)
1178 return ret_val;;
1179
1180 /* We're writing to the opposite bank so if we're on bank 1,
1181 * write to bank 0 etc. We also need to erase the segment that
1182 * is going to be written */
1183 if (!(er32(EECD) & E1000_EECD_SEC1VAL)) {
1184 new_bank_offset = nvm->flash_bank_size;
1185 old_bank_offset = 0;
1186 e1000_erase_flash_bank_ich8lan(hw, 1);
1187 } else {
1188 old_bank_offset = nvm->flash_bank_size;
1189 new_bank_offset = 0;
1190 e1000_erase_flash_bank_ich8lan(hw, 0);
1191 }
1192
1193 for (i = 0; i < E1000_ICH8_SHADOW_RAM_WORDS; i++) {
1194 /* Determine whether to write the value stored
1195 * in the other NVM bank or a modified value stored
1196 * in the shadow RAM */
1197 if (dev_spec->shadow_ram[i].modified) {
1198 data = dev_spec->shadow_ram[i].value;
1199 } else {
1200 e1000_read_flash_word_ich8lan(hw,
1201 i + old_bank_offset,
1202 &data);
1203 }
1204
1205 /* If the word is 0x13, then make sure the signature bits
1206 * (15:14) are 11b until the commit has completed.
1207 * This will allow us to write 10b which indicates the
1208 * signature is valid. We want to do this after the write
1209 * has completed so that we don't mark the segment valid
1210 * while the write is still in progress */
1211 if (i == E1000_ICH_NVM_SIG_WORD)
1212 data |= E1000_ICH_NVM_SIG_MASK;
1213
1214 /* Convert offset to bytes. */
1215 act_offset = (i + new_bank_offset) << 1;
1216
1217 udelay(100);
1218 /* Write the bytes to the new bank. */
1219 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
1220 act_offset,
1221 (u8)data);
1222 if (ret_val)
1223 break;
1224
1225 udelay(100);
1226 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
1227 act_offset + 1,
1228 (u8)(data >> 8));
1229 if (ret_val)
1230 break;
1231 }
1232
1233 /* Don't bother writing the segment valid bits if sector
1234 * programming failed. */
1235 if (ret_val) {
1236 hw_dbg(hw, "Flash commit failed.\n");
1237 e1000_release_swflag_ich8lan(hw);
1238 return ret_val;
1239 }
1240
1241 /* Finally validate the new segment by setting bit 15:14
1242 * to 10b in word 0x13 , this can be done without an
1243 * erase as well since these bits are 11 to start with
1244 * and we need to change bit 14 to 0b */
1245 act_offset = new_bank_offset + E1000_ICH_NVM_SIG_WORD;
1246 e1000_read_flash_word_ich8lan(hw, act_offset, &data);
1247 data &= 0xBFFF;
1248 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
1249 act_offset * 2 + 1,
1250 (u8)(data >> 8));
1251 if (ret_val) {
1252 e1000_release_swflag_ich8lan(hw);
1253 return ret_val;
1254 }
1255
1256 /* And invalidate the previously valid segment by setting
1257 * its signature word (0x13) high_byte to 0b. This can be
1258 * done without an erase because flash erase sets all bits
1259 * to 1's. We can write 1's to 0's without an erase */
1260 act_offset = (old_bank_offset + E1000_ICH_NVM_SIG_WORD) * 2 + 1;
1261 ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset, 0);
1262 if (ret_val) {
1263 e1000_release_swflag_ich8lan(hw);
1264 return ret_val;
1265 }
1266
1267 /* Great! Everything worked, we can now clear the cached entries. */
1268 for (i = 0; i < E1000_ICH8_SHADOW_RAM_WORDS; i++) {
1269 dev_spec->shadow_ram[i].modified = 0;
1270 dev_spec->shadow_ram[i].value = 0xFFFF;
1271 }
1272
1273 e1000_release_swflag_ich8lan(hw);
1274
1275 /* Reload the EEPROM, or else modifications will not appear
1276 * until after the next adapter reset.
1277 */
1278 e1000e_reload_nvm(hw);
1279 msleep(10);
1280
1281 return ret_val;
1282}
1283
1284/**
1285 * e1000_validate_nvm_checksum_ich8lan - Validate EEPROM checksum
1286 * @hw: pointer to the HW structure
1287 *
1288 * Check to see if checksum needs to be fixed by reading bit 6 in word 0x19.
1289 * If the bit is 0, that the EEPROM had been modified, but the checksum was not
1290 * calculated, in which case we need to calculate the checksum and set bit 6.
1291 **/
1292static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw)
1293{
1294 s32 ret_val;
1295 u16 data;
1296
1297 /* Read 0x19 and check bit 6. If this bit is 0, the checksum
1298 * needs to be fixed. This bit is an indication that the NVM
1299 * was prepared by OEM software and did not calculate the
1300 * checksum...a likely scenario.
1301 */
1302 ret_val = e1000_read_nvm(hw, 0x19, 1, &data);
1303 if (ret_val)
1304 return ret_val;
1305
1306 if ((data & 0x40) == 0) {
1307 data |= 0x40;
1308 ret_val = e1000_write_nvm(hw, 0x19, 1, &data);
1309 if (ret_val)
1310 return ret_val;
1311 ret_val = e1000e_update_nvm_checksum(hw);
1312 if (ret_val)
1313 return ret_val;
1314 }
1315
1316 return e1000e_validate_nvm_checksum_generic(hw);
1317}
1318
1319/**
1320 * e1000_write_flash_data_ich8lan - Writes bytes to the NVM
1321 * @hw: pointer to the HW structure
1322 * @offset: The offset (in bytes) of the byte/word to read.
1323 * @size: Size of data to read, 1=byte 2=word
1324 * @data: The byte(s) to write to the NVM.
1325 *
1326 * Writes one/two bytes to the NVM using the flash access registers.
1327 **/
1328static s32 e1000_write_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
1329 u8 size, u16 data)
1330{
1331 union ich8_hws_flash_status hsfsts;
1332 union ich8_hws_flash_ctrl hsflctl;
1333 u32 flash_linear_addr;
1334 u32 flash_data = 0;
1335 s32 ret_val;
1336 u8 count = 0;
1337
1338 if (size < 1 || size > 2 || data > size * 0xff ||
1339 offset > ICH_FLASH_LINEAR_ADDR_MASK)
1340 return -E1000_ERR_NVM;
1341
1342 flash_linear_addr = (ICH_FLASH_LINEAR_ADDR_MASK & offset) +
1343 hw->nvm.flash_base_addr;
1344
1345 do {
1346 udelay(1);
1347 /* Steps */
1348 ret_val = e1000_flash_cycle_init_ich8lan(hw);
1349 if (ret_val)
1350 break;
1351
1352 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
1353 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
1354 hsflctl.hsf_ctrl.fldbcount = size -1;
1355 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_WRITE;
1356 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
1357
1358 ew32flash(ICH_FLASH_FADDR, flash_linear_addr);
1359
1360 if (size == 1)
1361 flash_data = (u32)data & 0x00FF;
1362 else
1363 flash_data = (u32)data;
1364
1365 ew32flash(ICH_FLASH_FDATA0, flash_data);
1366
1367 /* check if FCERR is set to 1 , if set to 1, clear it
1368 * and try the whole sequence a few more times else done */
1369 ret_val = e1000_flash_cycle_ich8lan(hw,
1370 ICH_FLASH_WRITE_COMMAND_TIMEOUT);
1371 if (!ret_val)
1372 break;
1373
1374 /* If we're here, then things are most likely
1375 * completely hosed, but if the error condition
1376 * is detected, it won't hurt to give it another
1377 * try...ICH_FLASH_CYCLE_REPEAT_COUNT times.
1378 */
1379 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
1380 if (hsfsts.hsf_status.flcerr == 1)
1381 /* Repeat for some time before giving up. */
1382 continue;
1383 if (hsfsts.hsf_status.flcdone == 0) {
1384 hw_dbg(hw, "Timeout error - flash cycle "
1385 "did not complete.");
1386 break;
1387 }
1388 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
1389
1390 return ret_val;
1391}
1392
1393/**
1394 * e1000_write_flash_byte_ich8lan - Write a single byte to NVM
1395 * @hw: pointer to the HW structure
1396 * @offset: The index of the byte to read.
1397 * @data: The byte to write to the NVM.
1398 *
1399 * Writes a single byte to the NVM using the flash access registers.
1400 **/
1401static s32 e1000_write_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
1402 u8 data)
1403{
1404 u16 word = (u16)data;
1405
1406 return e1000_write_flash_data_ich8lan(hw, offset, 1, word);
1407}
1408
1409/**
1410 * e1000_retry_write_flash_byte_ich8lan - Writes a single byte to NVM
1411 * @hw: pointer to the HW structure
1412 * @offset: The offset of the byte to write.
1413 * @byte: The byte to write to the NVM.
1414 *
1415 * Writes a single byte to the NVM using the flash access registers.
1416 * Goes through a retry algorithm before giving up.
1417 **/
1418static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
1419 u32 offset, u8 byte)
1420{
1421 s32 ret_val;
1422 u16 program_retries;
1423
1424 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
1425 if (!ret_val)
1426 return ret_val;
1427
1428 for (program_retries = 0; program_retries < 100; program_retries++) {
1429 hw_dbg(hw, "Retrying Byte %2.2X at offset %u\n", byte, offset);
1430 udelay(100);
1431 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
1432 if (!ret_val)
1433 break;
1434 }
1435 if (program_retries == 100)
1436 return -E1000_ERR_NVM;
1437
1438 return 0;
1439}
1440
1441/**
1442 * e1000_erase_flash_bank_ich8lan - Erase a bank (4k) from NVM
1443 * @hw: pointer to the HW structure
1444 * @bank: 0 for first bank, 1 for second bank, etc.
1445 *
1446 * Erases the bank specified. Each bank is a 4k block. Banks are 0 based.
1447 * bank N is 4096 * N + flash_reg_addr.
1448 **/
1449static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank)
1450{
1451 struct e1000_nvm_info *nvm = &hw->nvm;
1452 union ich8_hws_flash_status hsfsts;
1453 union ich8_hws_flash_ctrl hsflctl;
1454 u32 flash_linear_addr;
1455 /* bank size is in 16bit words - adjust to bytes */
1456 u32 flash_bank_size = nvm->flash_bank_size * 2;
1457 s32 ret_val;
1458 s32 count = 0;
1459 s32 iteration;
1460 s32 sector_size;
1461 s32 j;
1462
1463 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
1464
1465 /* Determine HW Sector size: Read BERASE bits of hw flash status
1466 * register */
1467 /* 00: The Hw sector is 256 bytes, hence we need to erase 16
1468 * consecutive sectors. The start index for the nth Hw sector
1469 * can be calculated as = bank * 4096 + n * 256
1470 * 01: The Hw sector is 4K bytes, hence we need to erase 1 sector.
1471 * The start index for the nth Hw sector can be calculated
1472 * as = bank * 4096
1473 * 10: The Hw sector is 8K bytes, nth sector = bank * 8192
1474 * (ich9 only, otherwise error condition)
1475 * 11: The Hw sector is 64K bytes, nth sector = bank * 65536
1476 */
1477 switch (hsfsts.hsf_status.berasesz) {
1478 case 0:
1479 /* Hw sector size 256 */
1480 sector_size = ICH_FLASH_SEG_SIZE_256;
1481 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_256;
1482 break;
1483 case 1:
1484 sector_size = ICH_FLASH_SEG_SIZE_4K;
1485 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_4K;
1486 break;
1487 case 2:
1488 if (hw->mac.type == e1000_ich9lan) {
1489 sector_size = ICH_FLASH_SEG_SIZE_8K;
1490 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_8K;
1491 } else {
1492 return -E1000_ERR_NVM;
1493 }
1494 break;
1495 case 3:
1496 sector_size = ICH_FLASH_SEG_SIZE_64K;
1497 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_64K;
1498 break;
1499 default:
1500 return -E1000_ERR_NVM;
1501 }
1502
1503 /* Start with the base address, then add the sector offset. */
1504 flash_linear_addr = hw->nvm.flash_base_addr;
1505 flash_linear_addr += (bank) ? (sector_size * iteration) : 0;
1506
1507 for (j = 0; j < iteration ; j++) {
1508 do {
1509 /* Steps */
1510 ret_val = e1000_flash_cycle_init_ich8lan(hw);
1511 if (ret_val)
1512 return ret_val;
1513
1514 /* Write a value 11 (block Erase) in Flash
1515 * Cycle field in hw flash control */
1516 hsflctl.regval = er16flash(ICH_FLASH_HSFCTL);
1517 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_ERASE;
1518 ew16flash(ICH_FLASH_HSFCTL, hsflctl.regval);
1519
1520 /* Write the last 24 bits of an index within the
1521 * block into Flash Linear address field in Flash
1522 * Address.
1523 */
1524 flash_linear_addr += (j * sector_size);
1525 ew32flash(ICH_FLASH_FADDR, flash_linear_addr);
1526
1527 ret_val = e1000_flash_cycle_ich8lan(hw,
1528 ICH_FLASH_ERASE_COMMAND_TIMEOUT);
1529 if (ret_val == 0)
1530 break;
1531
1532 /* Check if FCERR is set to 1. If 1,
1533 * clear it and try the whole sequence
1534 * a few more times else Done */
1535 hsfsts.regval = er16flash(ICH_FLASH_HSFSTS);
1536 if (hsfsts.hsf_status.flcerr == 1)
1537 /* repeat for some time before
1538 * giving up */
1539 continue;
1540 else if (hsfsts.hsf_status.flcdone == 0)
1541 return ret_val;
1542 } while (++count < ICH_FLASH_CYCLE_REPEAT_COUNT);
1543 }
1544
1545 return 0;
1546}
1547
1548/**
1549 * e1000_valid_led_default_ich8lan - Set the default LED settings
1550 * @hw: pointer to the HW structure
1551 * @data: Pointer to the LED settings
1552 *
1553 * Reads the LED default settings from the NVM to data. If the NVM LED
1554 * settings is all 0's or F's, set the LED default to a valid LED default
1555 * setting.
1556 **/
1557static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw, u16 *data)
1558{
1559 s32 ret_val;
1560
1561 ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
1562 if (ret_val) {
1563 hw_dbg(hw, "NVM Read Error\n");
1564 return ret_val;
1565 }
1566
1567 if (*data == ID_LED_RESERVED_0000 ||
1568 *data == ID_LED_RESERVED_FFFF)
1569 *data = ID_LED_DEFAULT_ICH8LAN;
1570
1571 return 0;
1572}
1573
1574/**
1575 * e1000_get_bus_info_ich8lan - Get/Set the bus type and width
1576 * @hw: pointer to the HW structure
1577 *
1578 * ICH8 use the PCI Express bus, but does not contain a PCI Express Capability
1579 * register, so the the bus width is hard coded.
1580 **/
1581static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw)
1582{
1583 struct e1000_bus_info *bus = &hw->bus;
1584 s32 ret_val;
1585
1586 ret_val = e1000e_get_bus_info_pcie(hw);
1587
1588 /* ICH devices are "PCI Express"-ish. They have
1589 * a configuration space, but do not contain
1590 * PCI Express Capability registers, so bus width
1591 * must be hardcoded.
1592 */
1593 if (bus->width == e1000_bus_width_unknown)
1594 bus->width = e1000_bus_width_pcie_x1;
1595
1596 return ret_val;
1597}
1598
1599/**
1600 * e1000_reset_hw_ich8lan - Reset the hardware
1601 * @hw: pointer to the HW structure
1602 *
1603 * Does a full reset of the hardware which includes a reset of the PHY and
1604 * MAC.
1605 **/
1606static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
1607{
1608 u32 ctrl, icr, kab;
1609 s32 ret_val;
1610
1611 /* Prevent the PCI-E bus from sticking if there is no TLP connection
1612 * on the last TLP read/write transaction when MAC is reset.
1613 */
1614 ret_val = e1000e_disable_pcie_master(hw);
1615 if (ret_val) {
1616 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
1617 }
1618
1619 hw_dbg(hw, "Masking off all interrupts\n");
1620 ew32(IMC, 0xffffffff);
1621
1622 /* Disable the Transmit and Receive units. Then delay to allow
1623 * any pending transactions to complete before we hit the MAC
1624 * with the global reset.
1625 */
1626 ew32(RCTL, 0);
1627 ew32(TCTL, E1000_TCTL_PSP);
1628 e1e_flush();
1629
1630 msleep(10);
1631
1632 /* Workaround for ICH8 bit corruption issue in FIFO memory */
1633 if (hw->mac.type == e1000_ich8lan) {
1634 /* Set Tx and Rx buffer allocation to 8k apiece. */
1635 ew32(PBA, E1000_PBA_8K);
1636 /* Set Packet Buffer Size to 16k. */
1637 ew32(PBS, E1000_PBS_16K);
1638 }
1639
1640 ctrl = er32(CTRL);
1641
1642 if (!e1000_check_reset_block(hw)) {
1643 /* PHY HW reset requires MAC CORE reset at the same
1644 * time to make sure the interface between MAC and the
1645 * external PHY is reset.
1646 */
1647 ctrl |= E1000_CTRL_PHY_RST;
1648 }
1649 ret_val = e1000_acquire_swflag_ich8lan(hw);
1650 hw_dbg(hw, "Issuing a global reset to ich8lan");
1651 ew32(CTRL, (ctrl | E1000_CTRL_RST));
1652 msleep(20);
1653
1654 ret_val = e1000e_get_auto_rd_done(hw);
1655 if (ret_val) {
1656 /*
1657 * When auto config read does not complete, do not
1658 * return with an error. This can happen in situations
1659 * where there is no eeprom and prevents getting link.
1660 */
1661 hw_dbg(hw, "Auto Read Done did not complete\n");
1662 }
1663
1664 ew32(IMC, 0xffffffff);
1665 icr = er32(ICR);
1666
1667 kab = er32(KABGTXD);
1668 kab |= E1000_KABGTXD_BGSQLBIAS;
1669 ew32(KABGTXD, kab);
1670
1671 return ret_val;
1672}
1673
1674/**
1675 * e1000_init_hw_ich8lan - Initialize the hardware
1676 * @hw: pointer to the HW structure
1677 *
1678 * Prepares the hardware for transmit and receive by doing the following:
1679 * - initialize hardware bits
1680 * - initialize LED identification
1681 * - setup receive address registers
1682 * - setup flow control
1683 * - setup transmit discriptors
1684 * - clear statistics
1685 **/
1686static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw)
1687{
1688 struct e1000_mac_info *mac = &hw->mac;
1689 u32 ctrl_ext, txdctl, snoop;
1690 s32 ret_val;
1691 u16 i;
1692
1693 e1000_initialize_hw_bits_ich8lan(hw);
1694
1695 /* Initialize identification LED */
1696 ret_val = e1000e_id_led_init(hw);
1697 if (ret_val) {
1698 hw_dbg(hw, "Error initializing identification LED\n");
1699 return ret_val;
1700 }
1701
1702 /* Setup the receive address. */
1703 e1000e_init_rx_addrs(hw, mac->rar_entry_count);
1704
1705 /* Zero out the Multicast HASH table */
1706 hw_dbg(hw, "Zeroing the MTA\n");
1707 for (i = 0; i < mac->mta_reg_count; i++)
1708 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
1709
1710 /* Setup link and flow control */
1711 ret_val = e1000_setup_link_ich8lan(hw);
1712
1713 /* Set the transmit descriptor write-back policy for both queues */
1714 txdctl = er32(TXDCTL);
1715 txdctl = (txdctl & ~E1000_TXDCTL_WTHRESH) |
1716 E1000_TXDCTL_FULL_TX_DESC_WB;
1717 txdctl = (txdctl & ~E1000_TXDCTL_PTHRESH) |
1718 E1000_TXDCTL_MAX_TX_DESC_PREFETCH;
1719 ew32(TXDCTL, txdctl);
1720 txdctl = er32(TXDCTL1);
1721 txdctl = (txdctl & ~E1000_TXDCTL_WTHRESH) |
1722 E1000_TXDCTL_FULL_TX_DESC_WB;
1723 txdctl = (txdctl & ~E1000_TXDCTL_PTHRESH) |
1724 E1000_TXDCTL_MAX_TX_DESC_PREFETCH;
1725 ew32(TXDCTL1, txdctl);
1726
1727 /* ICH8 has opposite polarity of no_snoop bits.
1728 * By default, we should use snoop behavior. */
1729 if (mac->type == e1000_ich8lan)
1730 snoop = PCIE_ICH8_SNOOP_ALL;
1731 else
1732 snoop = (u32) ~(PCIE_NO_SNOOP_ALL);
1733 e1000e_set_pcie_no_snoop(hw, snoop);
1734
1735 ctrl_ext = er32(CTRL_EXT);
1736 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
1737 ew32(CTRL_EXT, ctrl_ext);
1738
1739 /* Clear all of the statistics registers (clear on read). It is
1740 * important that we do this after we have tried to establish link
1741 * because the symbol error count will increment wildly if there
1742 * is no link.
1743 */
1744 e1000_clear_hw_cntrs_ich8lan(hw);
1745
1746 return 0;
1747}
1748/**
1749 * e1000_initialize_hw_bits_ich8lan - Initialize required hardware bits
1750 * @hw: pointer to the HW structure
1751 *
1752 * Sets/Clears required hardware bits necessary for correctly setting up the
1753 * hardware for transmit and receive.
1754 **/
1755static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw)
1756{
1757 u32 reg;
1758
1759 /* Extended Device Control */
1760 reg = er32(CTRL_EXT);
1761 reg |= (1 << 22);
1762 ew32(CTRL_EXT, reg);
1763
1764 /* Transmit Descriptor Control 0 */
1765 reg = er32(TXDCTL);
1766 reg |= (1 << 22);
1767 ew32(TXDCTL, reg);
1768
1769 /* Transmit Descriptor Control 1 */
1770 reg = er32(TXDCTL1);
1771 reg |= (1 << 22);
1772 ew32(TXDCTL1, reg);
1773
1774 /* Transmit Arbitration Control 0 */
1775 reg = er32(TARC0);
1776 if (hw->mac.type == e1000_ich8lan)
1777 reg |= (1 << 28) | (1 << 29);
1778 reg |= (1 << 23) | (1 << 24) | (1 << 26) | (1 << 27);
1779 ew32(TARC0, reg);
1780
1781 /* Transmit Arbitration Control 1 */
1782 reg = er32(TARC1);
1783 if (er32(TCTL) & E1000_TCTL_MULR)
1784 reg &= ~(1 << 28);
1785 else
1786 reg |= (1 << 28);
1787 reg |= (1 << 24) | (1 << 26) | (1 << 30);
1788 ew32(TARC1, reg);
1789
1790 /* Device Status */
1791 if (hw->mac.type == e1000_ich8lan) {
1792 reg = er32(STATUS);
1793 reg &= ~(1 << 31);
1794 ew32(STATUS, reg);
1795 }
1796}
1797
1798/**
1799 * e1000_setup_link_ich8lan - Setup flow control and link settings
1800 * @hw: pointer to the HW structure
1801 *
1802 * Determines which flow control settings to use, then configures flow
1803 * control. Calls the appropriate media-specific link configuration
1804 * function. Assuming the adapter has a valid link partner, a valid link
1805 * should be established. Assumes the hardware has previously been reset
1806 * and the transmitter and receiver are not enabled.
1807 **/
1808static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw)
1809{
1810 struct e1000_mac_info *mac = &hw->mac;
1811 s32 ret_val;
1812
1813 if (e1000_check_reset_block(hw))
1814 return 0;
1815
1816 /* ICH parts do not have a word in the NVM to determine
1817 * the default flow control setting, so we explicitly
1818 * set it to full.
1819 */
1820 if (mac->fc == e1000_fc_default)
1821 mac->fc = e1000_fc_full;
1822
1823 mac->original_fc = mac->fc;
1824
1825 hw_dbg(hw, "After fix-ups FlowControl is now = %x\n", mac->fc);
1826
1827 /* Continue to configure the copper link. */
1828 ret_val = e1000_setup_copper_link_ich8lan(hw);
1829 if (ret_val)
1830 return ret_val;
1831
1832 ew32(FCTTV, mac->fc_pause_time);
1833
1834 return e1000e_set_fc_watermarks(hw);
1835}
1836
1837/**
1838 * e1000_setup_copper_link_ich8lan - Configure MAC/PHY interface
1839 * @hw: pointer to the HW structure
1840 *
1841 * Configures the kumeran interface to the PHY to wait the appropriate time
1842 * when polling the PHY, then call the generic setup_copper_link to finish
1843 * configuring the copper link.
1844 **/
1845static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw)
1846{
1847 u32 ctrl;
1848 s32 ret_val;
1849 u16 reg_data;
1850
1851 ctrl = er32(CTRL);
1852 ctrl |= E1000_CTRL_SLU;
1853 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1854 ew32(CTRL, ctrl);
1855
1856 /* Set the mac to wait the maximum time between each iteration
1857 * and increase the max iterations when polling the phy;
1858 * this fixes erroneous timeouts at 10Mbps. */
1859 ret_val = e1000e_write_kmrn_reg(hw, GG82563_REG(0x34, 4), 0xFFFF);
1860 if (ret_val)
1861 return ret_val;
1862 ret_val = e1000e_read_kmrn_reg(hw, GG82563_REG(0x34, 9), &reg_data);
1863 if (ret_val)
1864 return ret_val;
1865 reg_data |= 0x3F;
1866 ret_val = e1000e_write_kmrn_reg(hw, GG82563_REG(0x34, 9), reg_data);
1867 if (ret_val)
1868 return ret_val;
1869
1870 if (hw->phy.type == e1000_phy_igp_3) {
1871 ret_val = e1000e_copper_link_setup_igp(hw);
1872 if (ret_val)
1873 return ret_val;
1874 }
1875
1876 return e1000e_setup_copper_link(hw);
1877}
1878
1879/**
1880 * e1000_get_link_up_info_ich8lan - Get current link speed and duplex
1881 * @hw: pointer to the HW structure
1882 * @speed: pointer to store current link speed
1883 * @duplex: pointer to store the current link duplex
1884 *
1885 * Calls the generic get_speed_and_duplex to retreive the current link
1886 * information and then calls the Kumeran lock loss workaround for links at
1887 * gigabit speeds.
1888 **/
1889static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw, u16 *speed,
1890 u16 *duplex)
1891{
1892 s32 ret_val;
1893
1894 ret_val = e1000e_get_speed_and_duplex_copper(hw, speed, duplex);
1895 if (ret_val)
1896 return ret_val;
1897
1898 if ((hw->mac.type == e1000_ich8lan) &&
1899 (hw->phy.type == e1000_phy_igp_3) &&
1900 (*speed == SPEED_1000)) {
1901 ret_val = e1000_kmrn_lock_loss_workaround_ich8lan(hw);
1902 }
1903
1904 return ret_val;
1905}
1906
1907/**
1908 * e1000_kmrn_lock_loss_workaround_ich8lan - Kumeran workaround
1909 * @hw: pointer to the HW structure
1910 *
1911 * Work-around for 82566 Kumeran PCS lock loss:
1912 * On link status change (i.e. PCI reset, speed change) and link is up and
1913 * speed is gigabit-
1914 * 0) if workaround is optionally disabled do nothing
1915 * 1) wait 1ms for Kumeran link to come up
1916 * 2) check Kumeran Diagnostic register PCS lock loss bit
1917 * 3) if not set the link is locked (all is good), otherwise...
1918 * 4) reset the PHY
1919 * 5) repeat up to 10 times
1920 * Note: this is only called for IGP3 copper when speed is 1gb.
1921 **/
1922static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw)
1923{
1924 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
1925 u32 phy_ctrl;
1926 s32 ret_val;
1927 u16 i, data;
1928 bool link;
1929
1930 if (!dev_spec->kmrn_lock_loss_workaround_enabled)
1931 return 0;
1932
1933 /* Make sure link is up before proceeding. If not just return.
1934 * Attempting this while link is negotiating fouled up link
1935 * stability */
1936 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
1937 if (!link)
1938 return 0;
1939
1940 for (i = 0; i < 10; i++) {
1941 /* read once to clear */
1942 ret_val = e1e_rphy(hw, IGP3_KMRN_DIAG, &data);
1943 if (ret_val)
1944 return ret_val;
1945 /* and again to get new status */
1946 ret_val = e1e_rphy(hw, IGP3_KMRN_DIAG, &data);
1947 if (ret_val)
1948 return ret_val;
1949
1950 /* check for PCS lock */
1951 if (!(data & IGP3_KMRN_DIAG_PCS_LOCK_LOSS))
1952 return 0;
1953
1954 /* Issue PHY reset */
1955 e1000_phy_hw_reset(hw);
1956 mdelay(5);
1957 }
1958 /* Disable GigE link negotiation */
1959 phy_ctrl = er32(PHY_CTRL);
1960 phy_ctrl |= (E1000_PHY_CTRL_GBE_DISABLE |
1961 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
1962 ew32(PHY_CTRL, phy_ctrl);
1963
1964 /* Call gig speed drop workaround on Giga disable before accessing
1965 * any PHY registers */
1966 e1000e_gig_downshift_workaround_ich8lan(hw);
1967
1968 /* unable to acquire PCS lock */
1969 return -E1000_ERR_PHY;
1970}
1971
1972/**
1973 * e1000_set_kmrn_lock_loss_workaound_ich8lan - Set Kumeran workaround state
1974 * @hw: pointer to the HW structure
1975 * @state: boolean value used to set the current Kumaran workaround state
1976 *
1977 * If ICH8, set the current Kumeran workaround state (enabled - TRUE
1978 * /disabled - FALSE).
1979 **/
1980void e1000e_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,
1981 bool state)
1982{
1983 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
1984
1985 if (hw->mac.type != e1000_ich8lan) {
1986 hw_dbg(hw, "Workaround applies to ICH8 only.\n");
1987 return;
1988 }
1989
1990 dev_spec->kmrn_lock_loss_workaround_enabled = state;
1991}
1992
1993/**
1994 * e1000_ipg3_phy_powerdown_workaround_ich8lan - Power down workaround on D3
1995 * @hw: pointer to the HW structure
1996 *
1997 * Workaround for 82566 power-down on D3 entry:
1998 * 1) disable gigabit link
1999 * 2) write VR power-down enable
2000 * 3) read it back
2001 * Continue if successful, else issue LCD reset and repeat
2002 **/
2003void e1000e_igp3_phy_powerdown_workaround_ich8lan(struct e1000_hw *hw)
2004{
2005 u32 reg;
2006 u16 data;
2007 u8 retry = 0;
2008
2009 if (hw->phy.type != e1000_phy_igp_3)
2010 return;
2011
2012 /* Try the workaround twice (if needed) */
2013 do {
2014 /* Disable link */
2015 reg = er32(PHY_CTRL);
2016 reg |= (E1000_PHY_CTRL_GBE_DISABLE |
2017 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
2018 ew32(PHY_CTRL, reg);
2019
2020 /* Call gig speed drop workaround on Giga disable before
2021 * accessing any PHY registers */
2022 if (hw->mac.type == e1000_ich8lan)
2023 e1000e_gig_downshift_workaround_ich8lan(hw);
2024
2025 /* Write VR power-down enable */
2026 e1e_rphy(hw, IGP3_VR_CTRL, &data);
2027 data &= ~IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
2028 e1e_wphy(hw, IGP3_VR_CTRL, data | IGP3_VR_CTRL_MODE_SHUTDOWN);
2029
2030 /* Read it back and test */
2031 e1e_rphy(hw, IGP3_VR_CTRL, &data);
2032 data &= IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
2033 if ((data == IGP3_VR_CTRL_MODE_SHUTDOWN) || retry)
2034 break;
2035
2036 /* Issue PHY reset and repeat at most one more time */
2037 reg = er32(CTRL);
2038 ew32(CTRL, reg | E1000_CTRL_PHY_RST);
2039 retry++;
2040 } while (retry);
2041}
2042
2043/**
2044 * e1000e_gig_downshift_workaround_ich8lan - WoL from S5 stops working
2045 * @hw: pointer to the HW structure
2046 *
2047 * Steps to take when dropping from 1Gb/s (eg. link cable removal (LSC),
2048 * LPLU, Giga disable, MDIC PHY reset):
2049 * 1) Set Kumeran Near-end loopback
2050 * 2) Clear Kumeran Near-end loopback
2051 * Should only be called for ICH8[m] devices with IGP_3 Phy.
2052 **/
2053void e1000e_gig_downshift_workaround_ich8lan(struct e1000_hw *hw)
2054{
2055 s32 ret_val;
2056 u16 reg_data;
2057
2058 if ((hw->mac.type != e1000_ich8lan) ||
2059 (hw->phy.type != e1000_phy_igp_3))
2060 return;
2061
2062 ret_val = e1000e_read_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
2063 &reg_data);
2064 if (ret_val)
2065 return;
2066 reg_data |= E1000_KMRNCTRLSTA_DIAG_NELPBK;
2067 ret_val = e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
2068 reg_data);
2069 if (ret_val)
2070 return;
2071 reg_data &= ~E1000_KMRNCTRLSTA_DIAG_NELPBK;
2072 ret_val = e1000e_write_kmrn_reg(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
2073 reg_data);
2074}
2075
2076/**
2077 * e1000_cleanup_led_ich8lan - Restore the default LED operation
2078 * @hw: pointer to the HW structure
2079 *
2080 * Return the LED back to the default configuration.
2081 **/
2082static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw)
2083{
2084 if (hw->phy.type == e1000_phy_ife)
2085 return e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED, 0);
2086
2087 ew32(LEDCTL, hw->mac.ledctl_default);
2088 return 0;
2089}
2090
2091/**
2092 * e1000_led_on_ich8lan - Turn LED's on
2093 * @hw: pointer to the HW structure
2094 *
2095 * Turn on the LED's.
2096 **/
2097static s32 e1000_led_on_ich8lan(struct e1000_hw *hw)
2098{
2099 if (hw->phy.type == e1000_phy_ife)
2100 return e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED,
2101 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_ON));
2102
2103 ew32(LEDCTL, hw->mac.ledctl_mode2);
2104 return 0;
2105}
2106
2107/**
2108 * e1000_led_off_ich8lan - Turn LED's off
2109 * @hw: pointer to the HW structure
2110 *
2111 * Turn off the LED's.
2112 **/
2113static s32 e1000_led_off_ich8lan(struct e1000_hw *hw)
2114{
2115 if (hw->phy.type == e1000_phy_ife)
2116 return e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED,
2117 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_OFF));
2118
2119 ew32(LEDCTL, hw->mac.ledctl_mode1);
2120 return 0;
2121}
2122
2123/**
2124 * e1000_clear_hw_cntrs_ich8lan - Clear statistical counters
2125 * @hw: pointer to the HW structure
2126 *
2127 * Clears hardware counters specific to the silicon family and calls
2128 * clear_hw_cntrs_generic to clear all general purpose counters.
2129 **/
2130static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw)
2131{
2132 u32 temp;
2133
2134 e1000e_clear_hw_cntrs_base(hw);
2135
2136 temp = er32(ALGNERRC);
2137 temp = er32(RXERRC);
2138 temp = er32(TNCRS);
2139 temp = er32(CEXTERR);
2140 temp = er32(TSCTC);
2141 temp = er32(TSCTFC);
2142
2143 temp = er32(MGTPRC);
2144 temp = er32(MGTPDC);
2145 temp = er32(MGTPTC);
2146
2147 temp = er32(IAC);
2148 temp = er32(ICRXOC);
2149
2150}
2151
2152static struct e1000_mac_operations ich8_mac_ops = {
2153 .mng_mode_enab = E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT,
2154 .check_for_link = e1000e_check_for_copper_link,
2155 .cleanup_led = e1000_cleanup_led_ich8lan,
2156 .clear_hw_cntrs = e1000_clear_hw_cntrs_ich8lan,
2157 .get_bus_info = e1000_get_bus_info_ich8lan,
2158 .get_link_up_info = e1000_get_link_up_info_ich8lan,
2159 .led_on = e1000_led_on_ich8lan,
2160 .led_off = e1000_led_off_ich8lan,
2161 .mc_addr_list_update = e1000e_mc_addr_list_update_generic,
2162 .reset_hw = e1000_reset_hw_ich8lan,
2163 .init_hw = e1000_init_hw_ich8lan,
2164 .setup_link = e1000_setup_link_ich8lan,
2165 .setup_physical_interface= e1000_setup_copper_link_ich8lan,
2166};
2167
2168static struct e1000_phy_operations ich8_phy_ops = {
2169 .acquire_phy = e1000_acquire_swflag_ich8lan,
2170 .check_reset_block = e1000_check_reset_block_ich8lan,
2171 .commit_phy = NULL,
2172 .force_speed_duplex = e1000_phy_force_speed_duplex_ich8lan,
2173 .get_cfg_done = e1000e_get_cfg_done,
2174 .get_cable_length = e1000e_get_cable_length_igp_2,
2175 .get_phy_info = e1000_get_phy_info_ich8lan,
2176 .read_phy_reg = e1000e_read_phy_reg_igp,
2177 .release_phy = e1000_release_swflag_ich8lan,
2178 .reset_phy = e1000_phy_hw_reset_ich8lan,
2179 .set_d0_lplu_state = e1000_set_d0_lplu_state_ich8lan,
2180 .set_d3_lplu_state = e1000_set_d3_lplu_state_ich8lan,
2181 .write_phy_reg = e1000e_write_phy_reg_igp,
2182};
2183
2184static struct e1000_nvm_operations ich8_nvm_ops = {
2185 .acquire_nvm = e1000_acquire_swflag_ich8lan,
2186 .read_nvm = e1000_read_nvm_ich8lan,
2187 .release_nvm = e1000_release_swflag_ich8lan,
2188 .update_nvm = e1000_update_nvm_checksum_ich8lan,
2189 .valid_led_default = e1000_valid_led_default_ich8lan,
2190 .validate_nvm = e1000_validate_nvm_checksum_ich8lan,
2191 .write_nvm = e1000_write_nvm_ich8lan,
2192};
2193
2194struct e1000_info e1000_ich8_info = {
2195 .mac = e1000_ich8lan,
2196 .flags = FLAG_HAS_WOL
2197 | FLAG_RX_CSUM_ENABLED
2198 | FLAG_HAS_CTRLEXT_ON_LOAD
2199 | FLAG_HAS_AMT
2200 | FLAG_HAS_FLASH
2201 | FLAG_APME_IN_WUC,
2202 .pba = 8,
2203 .get_invariants = e1000_get_invariants_ich8lan,
2204 .mac_ops = &ich8_mac_ops,
2205 .phy_ops = &ich8_phy_ops,
2206 .nvm_ops = &ich8_nvm_ops,
2207};
2208
2209struct e1000_info e1000_ich9_info = {
2210 .mac = e1000_ich9lan,
2211 .flags = FLAG_HAS_JUMBO_FRAMES
2212 | FLAG_HAS_WOL
2213 | FLAG_RX_CSUM_ENABLED
2214 | FLAG_HAS_CTRLEXT_ON_LOAD
2215 | FLAG_HAS_AMT
2216 | FLAG_HAS_ERT
2217 | FLAG_HAS_FLASH
2218 | FLAG_APME_IN_WUC,
2219 .pba = 10,
2220 .get_invariants = e1000_get_invariants_ich8lan,
2221 .mac_ops = &ich8_mac_ops,
2222 .phy_ops = &ich8_phy_ops,
2223 .nvm_ops = &ich8_nvm_ops,
2224};
2225
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c
new file mode 100644
index 000000000000..3bbfe605e111
--- /dev/null
+++ b/drivers/net/e1000e/lib.c
@@ -0,0 +1,2487 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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#include <linux/netdevice.h>
30#include <linux/ethtool.h>
31#include <linux/delay.h>
32#include <linux/pci.h>
33
34#include "e1000.h"
35
36enum e1000_mng_mode {
37 e1000_mng_mode_none = 0,
38 e1000_mng_mode_asf,
39 e1000_mng_mode_pt,
40 e1000_mng_mode_ipmi,
41 e1000_mng_mode_host_if_only
42};
43
44#define E1000_FACTPS_MNGCG 0x20000000
45
46#define E1000_IAMT_SIGNATURE 0x544D4149 /* Intel(R) Active Management
47 * Technology signature */
48
49/**
50 * e1000e_get_bus_info_pcie - Get PCIe bus information
51 * @hw: pointer to the HW structure
52 *
53 * Determines and stores the system bus information for a particular
54 * network interface. The following bus information is determined and stored:
55 * bus speed, bus width, type (PCIe), and PCIe function.
56 **/
57s32 e1000e_get_bus_info_pcie(struct e1000_hw *hw)
58{
59 struct e1000_bus_info *bus = &hw->bus;
60 struct e1000_adapter *adapter = hw->adapter;
61 u32 status;
62 u16 pcie_link_status, pci_header_type, cap_offset;
63
64 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
65 if (!cap_offset) {
66 bus->width = e1000_bus_width_unknown;
67 } else {
68 pci_read_config_word(adapter->pdev,
69 cap_offset + PCIE_LINK_STATUS,
70 &pcie_link_status);
71 bus->width = (enum e1000_bus_width)((pcie_link_status &
72 PCIE_LINK_WIDTH_MASK) >>
73 PCIE_LINK_WIDTH_SHIFT);
74 }
75
76 pci_read_config_word(adapter->pdev, PCI_HEADER_TYPE_REGISTER,
77 &pci_header_type);
78 if (pci_header_type & PCI_HEADER_TYPE_MULTIFUNC) {
79 status = er32(STATUS);
80 bus->func = (status & E1000_STATUS_FUNC_MASK)
81 >> E1000_STATUS_FUNC_SHIFT;
82 } else {
83 bus->func = 0;
84 }
85
86 return 0;
87}
88
89/**
90 * e1000e_write_vfta - Write value to VLAN filter table
91 * @hw: pointer to the HW structure
92 * @offset: register offset in VLAN filter table
93 * @value: register value written to VLAN filter table
94 *
95 * Writes value at the given offset in the register array which stores
96 * the VLAN filter table.
97 **/
98void e1000e_write_vfta(struct e1000_hw *hw, u32 offset, u32 value)
99{
100 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, offset, value);
101 e1e_flush();
102}
103
104/**
105 * e1000e_init_rx_addrs - Initialize receive address's
106 * @hw: pointer to the HW structure
107 * @rar_count: receive address registers
108 *
109 * Setups the receive address registers by setting the base receive address
110 * register to the devices MAC address and clearing all the other receive
111 * address registers to 0.
112 **/
113void e1000e_init_rx_addrs(struct e1000_hw *hw, u16 rar_count)
114{
115 u32 i;
116
117 /* Setup the receive address */
118 hw_dbg(hw, "Programming MAC Address into RAR[0]\n");
119
120 e1000e_rar_set(hw, hw->mac.addr, 0);
121
122 /* Zero out the other (rar_entry_count - 1) receive addresses */
123 hw_dbg(hw, "Clearing RAR[1-%u]\n", rar_count-1);
124 for (i = 1; i < rar_count; i++) {
125 E1000_WRITE_REG_ARRAY(hw, E1000_RA, (i << 1), 0);
126 e1e_flush();
127 E1000_WRITE_REG_ARRAY(hw, E1000_RA, ((i << 1) + 1), 0);
128 e1e_flush();
129 }
130}
131
132/**
133 * e1000e_rar_set - Set receive address register
134 * @hw: pointer to the HW structure
135 * @addr: pointer to the receive address
136 * @index: receive address array register
137 *
138 * Sets the receive address array register at index to the address passed
139 * in by addr.
140 **/
141void e1000e_rar_set(struct e1000_hw *hw, u8 *addr, u32 index)
142{
143 u32 rar_low, rar_high;
144
145 /* HW expects these in little endian so we reverse the byte order
146 * from network order (big endian) to little endian
147 */
148 rar_low = ((u32) addr[0] |
149 ((u32) addr[1] << 8) |
150 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
151
152 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
153
154 rar_high |= E1000_RAH_AV;
155
156 E1000_WRITE_REG_ARRAY(hw, E1000_RA, (index << 1), rar_low);
157 E1000_WRITE_REG_ARRAY(hw, E1000_RA, ((index << 1) + 1), rar_high);
158}
159
160/**
161 * e1000_mta_set - Set multicast filter table address
162 * @hw: pointer to the HW structure
163 * @hash_value: determines the MTA register and bit to set
164 *
165 * The multicast table address is a register array of 32-bit registers.
166 * The hash_value is used to determine what register the bit is in, the
167 * current value is read, the new bit is OR'd in and the new value is
168 * written back into the register.
169 **/
170static void e1000_mta_set(struct e1000_hw *hw, u32 hash_value)
171{
172 u32 hash_bit, hash_reg, mta;
173
174 /* The MTA is a register array of 32-bit registers. It is
175 * treated like an array of (32*mta_reg_count) bits. We want to
176 * set bit BitArray[hash_value]. So we figure out what register
177 * the bit is in, read it, OR in the new bit, then write
178 * back the new value. The (hw->mac.mta_reg_count - 1) serves as a
179 * mask to bits 31:5 of the hash value which gives us the
180 * register we're modifying. The hash bit within that register
181 * is determined by the lower 5 bits of the hash value.
182 */
183 hash_reg = (hash_value >> 5) & (hw->mac.mta_reg_count - 1);
184 hash_bit = hash_value & 0x1F;
185
186 mta = E1000_READ_REG_ARRAY(hw, E1000_MTA, hash_reg);
187
188 mta |= (1 << hash_bit);
189
190 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, hash_reg, mta);
191 e1e_flush();
192}
193
194/**
195 * e1000_hash_mc_addr - Generate a multicast hash value
196 * @hw: pointer to the HW structure
197 * @mc_addr: pointer to a multicast address
198 *
199 * Generates a multicast address hash value which is used to determine
200 * the multicast filter table array address and new table value. See
201 * e1000_mta_set_generic()
202 **/
203static u32 e1000_hash_mc_addr(struct e1000_hw *hw, u8 *mc_addr)
204{
205 u32 hash_value, hash_mask;
206 u8 bit_shift = 0;
207
208 /* Register count multiplied by bits per register */
209 hash_mask = (hw->mac.mta_reg_count * 32) - 1;
210
211 /* For a mc_filter_type of 0, bit_shift is the number of left-shifts
212 * where 0xFF would still fall within the hash mask. */
213 while (hash_mask >> bit_shift != 0xFF)
214 bit_shift++;
215
216 /* The portion of the address that is used for the hash table
217 * is determined by the mc_filter_type setting.
218 * The algorithm is such that there is a total of 8 bits of shifting.
219 * The bit_shift for a mc_filter_type of 0 represents the number of
220 * left-shifts where the MSB of mc_addr[5] would still fall within
221 * the hash_mask. Case 0 does this exactly. Since there are a total
222 * of 8 bits of shifting, then mc_addr[4] will shift right the
223 * remaining number of bits. Thus 8 - bit_shift. The rest of the
224 * cases are a variation of this algorithm...essentially raising the
225 * number of bits to shift mc_addr[5] left, while still keeping the
226 * 8-bit shifting total.
227 */
228 /* For example, given the following Destination MAC Address and an
229 * mta register count of 128 (thus a 4096-bit vector and 0xFFF mask),
230 * we can see that the bit_shift for case 0 is 4. These are the hash
231 * values resulting from each mc_filter_type...
232 * [0] [1] [2] [3] [4] [5]
233 * 01 AA 00 12 34 56
234 * LSB MSB
235 *
236 * case 0: hash_value = ((0x34 >> 4) | (0x56 << 4)) & 0xFFF = 0x563
237 * case 1: hash_value = ((0x34 >> 3) | (0x56 << 5)) & 0xFFF = 0xAC6
238 * case 2: hash_value = ((0x34 >> 2) | (0x56 << 6)) & 0xFFF = 0x163
239 * case 3: hash_value = ((0x34 >> 0) | (0x56 << 8)) & 0xFFF = 0x634
240 */
241 switch (hw->mac.mc_filter_type) {
242 default:
243 case 0:
244 break;
245 case 1:
246 bit_shift += 1;
247 break;
248 case 2:
249 bit_shift += 2;
250 break;
251 case 3:
252 bit_shift += 4;
253 break;
254 }
255
256 hash_value = hash_mask & (((mc_addr[4] >> (8 - bit_shift)) |
257 (((u16) mc_addr[5]) << bit_shift)));
258
259 return hash_value;
260}
261
262/**
263 * e1000e_mc_addr_list_update_generic - Update Multicast addresses
264 * @hw: pointer to the HW structure
265 * @mc_addr_list: array of multicast addresses to program
266 * @mc_addr_count: number of multicast addresses to program
267 * @rar_used_count: the first RAR register free to program
268 * @rar_count: total number of supported Receive Address Registers
269 *
270 * Updates the Receive Address Registers and Multicast Table Array.
271 * The caller must have a packed mc_addr_list of multicast addresses.
272 * The parameter rar_count will usually be hw->mac.rar_entry_count
273 * unless there are workarounds that change this.
274 **/
275void e1000e_mc_addr_list_update_generic(struct e1000_hw *hw,
276 u8 *mc_addr_list, u32 mc_addr_count,
277 u32 rar_used_count, u32 rar_count)
278{
279 u32 hash_value;
280 u32 i;
281
282 /* Load the first set of multicast addresses into the exact
283 * filters (RAR). If there are not enough to fill the RAR
284 * array, clear the filters.
285 */
286 for (i = rar_used_count; i < rar_count; i++) {
287 if (mc_addr_count) {
288 e1000e_rar_set(hw, mc_addr_list, i);
289 mc_addr_count--;
290 mc_addr_list += ETH_ALEN;
291 } else {
292 E1000_WRITE_REG_ARRAY(hw, E1000_RA, i << 1, 0);
293 e1e_flush();
294 E1000_WRITE_REG_ARRAY(hw, E1000_RA, (i << 1) + 1, 0);
295 e1e_flush();
296 }
297 }
298
299 /* Clear the old settings from the MTA */
300 hw_dbg(hw, "Clearing MTA\n");
301 for (i = 0; i < hw->mac.mta_reg_count; i++) {
302 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
303 e1e_flush();
304 }
305
306 /* Load any remaining multicast addresses into the hash table. */
307 for (; mc_addr_count > 0; mc_addr_count--) {
308 hash_value = e1000_hash_mc_addr(hw, mc_addr_list);
309 hw_dbg(hw, "Hash value = 0x%03X\n", hash_value);
310 e1000_mta_set(hw, hash_value);
311 mc_addr_list += ETH_ALEN;
312 }
313}
314
315/**
316 * e1000e_clear_hw_cntrs_base - Clear base hardware counters
317 * @hw: pointer to the HW structure
318 *
319 * Clears the base hardware counters by reading the counter registers.
320 **/
321void e1000e_clear_hw_cntrs_base(struct e1000_hw *hw)
322{
323 u32 temp;
324
325 temp = er32(CRCERRS);
326 temp = er32(SYMERRS);
327 temp = er32(MPC);
328 temp = er32(SCC);
329 temp = er32(ECOL);
330 temp = er32(MCC);
331 temp = er32(LATECOL);
332 temp = er32(COLC);
333 temp = er32(DC);
334 temp = er32(SEC);
335 temp = er32(RLEC);
336 temp = er32(XONRXC);
337 temp = er32(XONTXC);
338 temp = er32(XOFFRXC);
339 temp = er32(XOFFTXC);
340 temp = er32(FCRUC);
341 temp = er32(GPRC);
342 temp = er32(BPRC);
343 temp = er32(MPRC);
344 temp = er32(GPTC);
345 temp = er32(GORCL);
346 temp = er32(GORCH);
347 temp = er32(GOTCL);
348 temp = er32(GOTCH);
349 temp = er32(RNBC);
350 temp = er32(RUC);
351 temp = er32(RFC);
352 temp = er32(ROC);
353 temp = er32(RJC);
354 temp = er32(TORL);
355 temp = er32(TORH);
356 temp = er32(TOTL);
357 temp = er32(TOTH);
358 temp = er32(TPR);
359 temp = er32(TPT);
360 temp = er32(MPTC);
361 temp = er32(BPTC);
362}
363
364/**
365 * e1000e_check_for_copper_link - Check for link (Copper)
366 * @hw: pointer to the HW structure
367 *
368 * Checks to see of the link status of the hardware has changed. If a
369 * change in link status has been detected, then we read the PHY registers
370 * to get the current speed/duplex if link exists.
371 **/
372s32 e1000e_check_for_copper_link(struct e1000_hw *hw)
373{
374 struct e1000_mac_info *mac = &hw->mac;
375 s32 ret_val;
376 bool link;
377
378 /* We only want to go out to the PHY registers to see if Auto-Neg
379 * has completed and/or if our link status has changed. The
380 * get_link_status flag is set upon receiving a Link Status
381 * Change or Rx Sequence Error interrupt.
382 */
383 if (!mac->get_link_status)
384 return 0;
385
386 /* First we want to see if the MII Status Register reports
387 * link. If so, then we want to get the current speed/duplex
388 * of the PHY.
389 */
390 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
391 if (ret_val)
392 return ret_val;
393
394 if (!link)
395 return ret_val; /* No link detected */
396
397 mac->get_link_status = 0;
398
399 /* Check if there was DownShift, must be checked
400 * immediately after link-up */
401 e1000e_check_downshift(hw);
402
403 /* If we are forcing speed/duplex, then we simply return since
404 * we have already determined whether we have link or not.
405 */
406 if (!mac->autoneg) {
407 ret_val = -E1000_ERR_CONFIG;
408 return ret_val;
409 }
410
411 /* Auto-Neg is enabled. Auto Speed Detection takes care
412 * of MAC speed/duplex configuration. So we only need to
413 * configure Collision Distance in the MAC.
414 */
415 e1000e_config_collision_dist(hw);
416
417 /* Configure Flow Control now that Auto-Neg has completed.
418 * First, we need to restore the desired flow control
419 * settings because we may have had to re-autoneg with a
420 * different link partner.
421 */
422 ret_val = e1000e_config_fc_after_link_up(hw);
423 if (ret_val) {
424 hw_dbg(hw, "Error configuring flow control\n");
425 }
426
427 return ret_val;
428}
429
430/**
431 * e1000e_check_for_fiber_link - Check for link (Fiber)
432 * @hw: pointer to the HW structure
433 *
434 * Checks for link up on the hardware. If link is not up and we have
435 * a signal, then we need to force link up.
436 **/
437s32 e1000e_check_for_fiber_link(struct e1000_hw *hw)
438{
439 struct e1000_mac_info *mac = &hw->mac;
440 u32 rxcw;
441 u32 ctrl;
442 u32 status;
443 s32 ret_val;
444
445 ctrl = er32(CTRL);
446 status = er32(STATUS);
447 rxcw = er32(RXCW);
448
449 /* If we don't have link (auto-negotiation failed or link partner
450 * cannot auto-negotiate), the cable is plugged in (we have signal),
451 * and our link partner is not trying to auto-negotiate with us (we
452 * are receiving idles or data), we need to force link up. We also
453 * need to give auto-negotiation time to complete, in case the cable
454 * was just plugged in. The autoneg_failed flag does this.
455 */
456 /* (ctrl & E1000_CTRL_SWDPIN1) == 1 == have signal */
457 if ((ctrl & E1000_CTRL_SWDPIN1) && (!(status & E1000_STATUS_LU)) &&
458 (!(rxcw & E1000_RXCW_C))) {
459 if (mac->autoneg_failed == 0) {
460 mac->autoneg_failed = 1;
461 return 0;
462 }
463 hw_dbg(hw, "NOT RXing /C/, disable AutoNeg and force link.\n");
464
465 /* Disable auto-negotiation in the TXCW register */
466 ew32(TXCW, (mac->txcw & ~E1000_TXCW_ANE));
467
468 /* Force link-up and also force full-duplex. */
469 ctrl = er32(CTRL);
470 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
471 ew32(CTRL, ctrl);
472
473 /* Configure Flow Control after forcing link up. */
474 ret_val = e1000e_config_fc_after_link_up(hw);
475 if (ret_val) {
476 hw_dbg(hw, "Error configuring flow control\n");
477 return ret_val;
478 }
479 } else if ((ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
480 /* If we are forcing link and we are receiving /C/ ordered
481 * sets, re-enable auto-negotiation in the TXCW register
482 * and disable forced link in the Device Control register
483 * in an attempt to auto-negotiate with our link partner.
484 */
485 hw_dbg(hw, "RXing /C/, enable AutoNeg and stop forcing link.\n");
486 ew32(TXCW, mac->txcw);
487 ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
488
489 mac->serdes_has_link = 1;
490 }
491
492 return 0;
493}
494
495/**
496 * e1000e_check_for_serdes_link - Check for link (Serdes)
497 * @hw: pointer to the HW structure
498 *
499 * Checks for link up on the hardware. If link is not up and we have
500 * a signal, then we need to force link up.
501 **/
502s32 e1000e_check_for_serdes_link(struct e1000_hw *hw)
503{
504 struct e1000_mac_info *mac = &hw->mac;
505 u32 rxcw;
506 u32 ctrl;
507 u32 status;
508 s32 ret_val;
509
510 ctrl = er32(CTRL);
511 status = er32(STATUS);
512 rxcw = er32(RXCW);
513
514 /* If we don't have link (auto-negotiation failed or link partner
515 * cannot auto-negotiate), and our link partner is not trying to
516 * auto-negotiate with us (we are receiving idles or data),
517 * we need to force link up. We also need to give auto-negotiation
518 * time to complete.
519 */
520 /* (ctrl & E1000_CTRL_SWDPIN1) == 1 == have signal */
521 if ((!(status & E1000_STATUS_LU)) && (!(rxcw & E1000_RXCW_C))) {
522 if (mac->autoneg_failed == 0) {
523 mac->autoneg_failed = 1;
524 return 0;
525 }
526 hw_dbg(hw, "NOT RXing /C/, disable AutoNeg and force link.\n");
527
528 /* Disable auto-negotiation in the TXCW register */
529 ew32(TXCW, (mac->txcw & ~E1000_TXCW_ANE));
530
531 /* Force link-up and also force full-duplex. */
532 ctrl = er32(CTRL);
533 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
534 ew32(CTRL, ctrl);
535
536 /* Configure Flow Control after forcing link up. */
537 ret_val = e1000e_config_fc_after_link_up(hw);
538 if (ret_val) {
539 hw_dbg(hw, "Error configuring flow control\n");
540 return ret_val;
541 }
542 } else if ((ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
543 /* If we are forcing link and we are receiving /C/ ordered
544 * sets, re-enable auto-negotiation in the TXCW register
545 * and disable forced link in the Device Control register
546 * in an attempt to auto-negotiate with our link partner.
547 */
548 hw_dbg(hw, "RXing /C/, enable AutoNeg and stop forcing link.\n");
549 ew32(TXCW, mac->txcw);
550 ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
551
552 mac->serdes_has_link = 1;
553 } else if (!(E1000_TXCW_ANE & er32(TXCW))) {
554 /* If we force link for non-auto-negotiation switch, check
555 * link status based on MAC synchronization for internal
556 * serdes media type.
557 */
558 /* SYNCH bit and IV bit are sticky. */
559 udelay(10);
560 if (E1000_RXCW_SYNCH & er32(RXCW)) {
561 if (!(rxcw & E1000_RXCW_IV)) {
562 mac->serdes_has_link = 1;
563 hw_dbg(hw, "SERDES: Link is up.\n");
564 }
565 } else {
566 mac->serdes_has_link = 0;
567 hw_dbg(hw, "SERDES: Link is down.\n");
568 }
569 }
570
571 if (E1000_TXCW_ANE & er32(TXCW)) {
572 status = er32(STATUS);
573 mac->serdes_has_link = (status & E1000_STATUS_LU);
574 }
575
576 return 0;
577}
578
579/**
580 * e1000_set_default_fc_generic - Set flow control default values
581 * @hw: pointer to the HW structure
582 *
583 * Read the EEPROM for the default values for flow control and store the
584 * values.
585 **/
586static s32 e1000_set_default_fc_generic(struct e1000_hw *hw)
587{
588 struct e1000_mac_info *mac = &hw->mac;
589 s32 ret_val;
590 u16 nvm_data;
591
592 if (mac->fc != e1000_fc_default)
593 return 0;
594
595 /* Read and store word 0x0F of the EEPROM. This word contains bits
596 * that determine the hardware's default PAUSE (flow control) mode,
597 * a bit that determines whether the HW defaults to enabling or
598 * disabling auto-negotiation, and the direction of the
599 * SW defined pins. If there is no SW over-ride of the flow
600 * control setting, then the variable hw->fc will
601 * be initialized based on a value in the EEPROM.
602 */
603 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &nvm_data);
604
605 if (ret_val) {
606 hw_dbg(hw, "NVM Read Error\n");
607 return ret_val;
608 }
609
610 if ((nvm_data & NVM_WORD0F_PAUSE_MASK) == 0)
611 mac->fc = e1000_fc_none;
612 else if ((nvm_data & NVM_WORD0F_PAUSE_MASK) ==
613 NVM_WORD0F_ASM_DIR)
614 mac->fc = e1000_fc_tx_pause;
615 else
616 mac->fc = e1000_fc_full;
617
618 return 0;
619}
620
621/**
622 * e1000e_setup_link - Setup flow control and link settings
623 * @hw: pointer to the HW structure
624 *
625 * Determines which flow control settings to use, then configures flow
626 * control. Calls the appropriate media-specific link configuration
627 * function. Assuming the adapter has a valid link partner, a valid link
628 * should be established. Assumes the hardware has previously been reset
629 * and the transmitter and receiver are not enabled.
630 **/
631s32 e1000e_setup_link(struct e1000_hw *hw)
632{
633 struct e1000_mac_info *mac = &hw->mac;
634 s32 ret_val;
635
636 /* In the case of the phy reset being blocked, we already have a link.
637 * We do not need to set it up again.
638 */
639 if (e1000_check_reset_block(hw))
640 return 0;
641
642 ret_val = e1000_set_default_fc_generic(hw);
643 if (ret_val)
644 return ret_val;
645
646 /* We want to save off the original Flow Control configuration just
647 * in case we get disconnected and then reconnected into a different
648 * hub or switch with different Flow Control capabilities.
649 */
650 mac->original_fc = mac->fc;
651
652 hw_dbg(hw, "After fix-ups FlowControl is now = %x\n", mac->fc);
653
654 /* Call the necessary media_type subroutine to configure the link. */
655 ret_val = mac->ops.setup_physical_interface(hw);
656 if (ret_val)
657 return ret_val;
658
659 /* Initialize the flow control address, type, and PAUSE timer
660 * registers to their default values. This is done even if flow
661 * control is disabled, because it does not hurt anything to
662 * initialize these registers.
663 */
664 hw_dbg(hw, "Initializing the Flow Control address, type and timer regs\n");
665 ew32(FCT, FLOW_CONTROL_TYPE);
666 ew32(FCAH, FLOW_CONTROL_ADDRESS_HIGH);
667 ew32(FCAL, FLOW_CONTROL_ADDRESS_LOW);
668
669 ew32(FCTTV, mac->fc_pause_time);
670
671 return e1000e_set_fc_watermarks(hw);
672}
673
674/**
675 * e1000_commit_fc_settings_generic - Configure flow control
676 * @hw: pointer to the HW structure
677 *
678 * Write the flow control settings to the Transmit Config Word Register (TXCW)
679 * base on the flow control settings in e1000_mac_info.
680 **/
681static s32 e1000_commit_fc_settings_generic(struct e1000_hw *hw)
682{
683 struct e1000_mac_info *mac = &hw->mac;
684 u32 txcw;
685
686 /* Check for a software override of the flow control settings, and
687 * setup the device accordingly. If auto-negotiation is enabled, then
688 * software will have to set the "PAUSE" bits to the correct value in
689 * the Transmit Config Word Register (TXCW) and re-start auto-
690 * negotiation. However, if auto-negotiation is disabled, then
691 * software will have to manually configure the two flow control enable
692 * bits in the CTRL register.
693 *
694 * The possible values of the "fc" parameter are:
695 * 0: Flow control is completely disabled
696 * 1: Rx flow control is enabled (we can receive pause frames,
697 * but not send pause frames).
698 * 2: Tx flow control is enabled (we can send pause frames but we
699 * do not support receiving pause frames).
700 * 3: Both Rx and TX flow control (symmetric) are enabled.
701 */
702 switch (mac->fc) {
703 case e1000_fc_none:
704 /* Flow control completely disabled by a software over-ride. */
705 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
706 break;
707 case e1000_fc_rx_pause:
708 /* RX Flow control is enabled and TX Flow control is disabled
709 * by a software over-ride. Since there really isn't a way to
710 * advertise that we are capable of RX Pause ONLY, we will
711 * advertise that we support both symmetric and asymmetric RX
712 * PAUSE. Later, we will disable the adapter's ability to send
713 * PAUSE frames.
714 */
715 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
716 break;
717 case e1000_fc_tx_pause:
718 /* TX Flow control is enabled, and RX Flow control is disabled,
719 * by a software over-ride.
720 */
721 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
722 break;
723 case e1000_fc_full:
724 /* Flow control (both RX and TX) is enabled by a software
725 * over-ride.
726 */
727 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
728 break;
729 default:
730 hw_dbg(hw, "Flow control param set incorrectly\n");
731 return -E1000_ERR_CONFIG;
732 break;
733 }
734
735 ew32(TXCW, txcw);
736 mac->txcw = txcw;
737
738 return 0;
739}
740
741/**
742 * e1000_poll_fiber_serdes_link_generic - Poll for link up
743 * @hw: pointer to the HW structure
744 *
745 * Polls for link up by reading the status register, if link fails to come
746 * up with auto-negotiation, then the link is forced if a signal is detected.
747 **/
748static s32 e1000_poll_fiber_serdes_link_generic(struct e1000_hw *hw)
749{
750 struct e1000_mac_info *mac = &hw->mac;
751 u32 i, status;
752 s32 ret_val;
753
754 /* If we have a signal (the cable is plugged in, or assumed true for
755 * serdes media) then poll for a "Link-Up" indication in the Device
756 * Status Register. Time-out if a link isn't seen in 500 milliseconds
757 * seconds (Auto-negotiation should complete in less than 500
758 * milliseconds even if the other end is doing it in SW).
759 */
760 for (i = 0; i < FIBER_LINK_UP_LIMIT; i++) {
761 msleep(10);
762 status = er32(STATUS);
763 if (status & E1000_STATUS_LU)
764 break;
765 }
766 if (i == FIBER_LINK_UP_LIMIT) {
767 hw_dbg(hw, "Never got a valid link from auto-neg!!!\n");
768 mac->autoneg_failed = 1;
769 /* AutoNeg failed to achieve a link, so we'll call
770 * mac->check_for_link. This routine will force the
771 * link up if we detect a signal. This will allow us to
772 * communicate with non-autonegotiating link partners.
773 */
774 ret_val = mac->ops.check_for_link(hw);
775 if (ret_val) {
776 hw_dbg(hw, "Error while checking for link\n");
777 return ret_val;
778 }
779 mac->autoneg_failed = 0;
780 } else {
781 mac->autoneg_failed = 0;
782 hw_dbg(hw, "Valid Link Found\n");
783 }
784
785 return 0;
786}
787
788/**
789 * e1000e_setup_fiber_serdes_link - Setup link for fiber/serdes
790 * @hw: pointer to the HW structure
791 *
792 * Configures collision distance and flow control for fiber and serdes
793 * links. Upon successful setup, poll for link.
794 **/
795s32 e1000e_setup_fiber_serdes_link(struct e1000_hw *hw)
796{
797 u32 ctrl;
798 s32 ret_val;
799
800 ctrl = er32(CTRL);
801
802 /* Take the link out of reset */
803 ctrl &= ~E1000_CTRL_LRST;
804
805 e1000e_config_collision_dist(hw);
806
807 ret_val = e1000_commit_fc_settings_generic(hw);
808 if (ret_val)
809 return ret_val;
810
811 /* Since auto-negotiation is enabled, take the link out of reset (the
812 * link will be in reset, because we previously reset the chip). This
813 * will restart auto-negotiation. If auto-negotiation is successful
814 * then the link-up status bit will be set and the flow control enable
815 * bits (RFCE and TFCE) will be set according to their negotiated value.
816 */
817 hw_dbg(hw, "Auto-negotiation enabled\n");
818
819 ew32(CTRL, ctrl);
820 e1e_flush();
821 msleep(1);
822
823 /* For these adapters, the SW defineable pin 1 is set when the optics
824 * detect a signal. If we have a signal, then poll for a "Link-Up"
825 * indication.
826 */
827 if (hw->media_type == e1000_media_type_internal_serdes ||
828 (er32(CTRL) & E1000_CTRL_SWDPIN1)) {
829 ret_val = e1000_poll_fiber_serdes_link_generic(hw);
830 } else {
831 hw_dbg(hw, "No signal detected\n");
832 }
833
834 return 0;
835}
836
837/**
838 * e1000e_config_collision_dist - Configure collision distance
839 * @hw: pointer to the HW structure
840 *
841 * Configures the collision distance to the default value and is used
842 * during link setup. Currently no func pointer exists and all
843 * implementations are handled in the generic version of this function.
844 **/
845void e1000e_config_collision_dist(struct e1000_hw *hw)
846{
847 u32 tctl;
848
849 tctl = er32(TCTL);
850
851 tctl &= ~E1000_TCTL_COLD;
852 tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT;
853
854 ew32(TCTL, tctl);
855 e1e_flush();
856}
857
858/**
859 * e1000e_set_fc_watermarks - Set flow control high/low watermarks
860 * @hw: pointer to the HW structure
861 *
862 * Sets the flow control high/low threshold (watermark) registers. If
863 * flow control XON frame transmission is enabled, then set XON frame
864 * tansmission as well.
865 **/
866s32 e1000e_set_fc_watermarks(struct e1000_hw *hw)
867{
868 struct e1000_mac_info *mac = &hw->mac;
869 u32 fcrtl = 0, fcrth = 0;
870
871 /* Set the flow control receive threshold registers. Normally,
872 * these registers will be set to a default threshold that may be
873 * adjusted later by the driver's runtime code. However, if the
874 * ability to transmit pause frames is not enabled, then these
875 * registers will be set to 0.
876 */
877 if (mac->fc & e1000_fc_tx_pause) {
878 /* We need to set up the Receive Threshold high and low water
879 * marks as well as (optionally) enabling the transmission of
880 * XON frames.
881 */
882 fcrtl = mac->fc_low_water;
883 fcrtl |= E1000_FCRTL_XONE;
884 fcrth = mac->fc_high_water;
885 }
886 ew32(FCRTL, fcrtl);
887 ew32(FCRTH, fcrth);
888
889 return 0;
890}
891
892/**
893 * e1000e_force_mac_fc - Force the MAC's flow control settings
894 * @hw: pointer to the HW structure
895 *
896 * Force the MAC's flow control settings. Sets the TFCE and RFCE bits in the
897 * device control register to reflect the adapter settings. TFCE and RFCE
898 * need to be explicitly set by software when a copper PHY is used because
899 * autonegotiation is managed by the PHY rather than the MAC. Software must
900 * also configure these bits when link is forced on a fiber connection.
901 **/
902s32 e1000e_force_mac_fc(struct e1000_hw *hw)
903{
904 struct e1000_mac_info *mac = &hw->mac;
905 u32 ctrl;
906
907 ctrl = er32(CTRL);
908
909 /* Because we didn't get link via the internal auto-negotiation
910 * mechanism (we either forced link or we got link via PHY
911 * auto-neg), we have to manually enable/disable transmit an
912 * receive flow control.
913 *
914 * The "Case" statement below enables/disable flow control
915 * according to the "mac->fc" parameter.
916 *
917 * The possible values of the "fc" parameter are:
918 * 0: Flow control is completely disabled
919 * 1: Rx flow control is enabled (we can receive pause
920 * frames but not send pause frames).
921 * 2: Tx flow control is enabled (we can send pause frames
922 * frames but we do not receive pause frames).
923 * 3: Both Rx and TX flow control (symmetric) is enabled.
924 * other: No other values should be possible at this point.
925 */
926 hw_dbg(hw, "mac->fc = %u\n", mac->fc);
927
928 switch (mac->fc) {
929 case e1000_fc_none:
930 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
931 break;
932 case e1000_fc_rx_pause:
933 ctrl &= (~E1000_CTRL_TFCE);
934 ctrl |= E1000_CTRL_RFCE;
935 break;
936 case e1000_fc_tx_pause:
937 ctrl &= (~E1000_CTRL_RFCE);
938 ctrl |= E1000_CTRL_TFCE;
939 break;
940 case e1000_fc_full:
941 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
942 break;
943 default:
944 hw_dbg(hw, "Flow control param set incorrectly\n");
945 return -E1000_ERR_CONFIG;
946 }
947
948 ew32(CTRL, ctrl);
949
950 return 0;
951}
952
953/**
954 * e1000e_config_fc_after_link_up - Configures flow control after link
955 * @hw: pointer to the HW structure
956 *
957 * Checks the status of auto-negotiation after link up to ensure that the
958 * speed and duplex were not forced. If the link needed to be forced, then
959 * flow control needs to be forced also. If auto-negotiation is enabled
960 * and did not fail, then we configure flow control based on our link
961 * partner.
962 **/
963s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
964{
965 struct e1000_mac_info *mac = &hw->mac;
966 s32 ret_val = 0;
967 u16 mii_status_reg, mii_nway_adv_reg, mii_nway_lp_ability_reg;
968 u16 speed, duplex;
969
970 /* Check for the case where we have fiber media and auto-neg failed
971 * so we had to force link. In this case, we need to force the
972 * configuration of the MAC to match the "fc" parameter.
973 */
974 if (mac->autoneg_failed) {
975 if (hw->media_type == e1000_media_type_fiber ||
976 hw->media_type == e1000_media_type_internal_serdes)
977 ret_val = e1000e_force_mac_fc(hw);
978 } else {
979 if (hw->media_type == e1000_media_type_copper)
980 ret_val = e1000e_force_mac_fc(hw);
981 }
982
983 if (ret_val) {
984 hw_dbg(hw, "Error forcing flow control settings\n");
985 return ret_val;
986 }
987
988 /* Check for the case where we have copper media and auto-neg is
989 * enabled. In this case, we need to check and see if Auto-Neg
990 * has completed, and if so, how the PHY and link partner has
991 * flow control configured.
992 */
993 if ((hw->media_type == e1000_media_type_copper) && mac->autoneg) {
994 /* Read the MII Status Register and check to see if AutoNeg
995 * has completed. We read this twice because this reg has
996 * some "sticky" (latched) bits.
997 */
998 ret_val = e1e_rphy(hw, PHY_STATUS, &mii_status_reg);
999 if (ret_val)
1000 return ret_val;
1001 ret_val = e1e_rphy(hw, PHY_STATUS, &mii_status_reg);
1002 if (ret_val)
1003 return ret_val;
1004
1005 if (!(mii_status_reg & MII_SR_AUTONEG_COMPLETE)) {
1006 hw_dbg(hw, "Copper PHY and Auto Neg "
1007 "has not completed.\n");
1008 return ret_val;
1009 }
1010
1011 /* The AutoNeg process has completed, so we now need to
1012 * read both the Auto Negotiation Advertisement
1013 * Register (Address 4) and the Auto_Negotiation Base
1014 * Page Ability Register (Address 5) to determine how
1015 * flow control was negotiated.
1016 */
1017 ret_val = e1e_rphy(hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg);
1018 if (ret_val)
1019 return ret_val;
1020 ret_val = e1e_rphy(hw, PHY_LP_ABILITY, &mii_nway_lp_ability_reg);
1021 if (ret_val)
1022 return ret_val;
1023
1024 /* Two bits in the Auto Negotiation Advertisement Register
1025 * (Address 4) and two bits in the Auto Negotiation Base
1026 * Page Ability Register (Address 5) determine flow control
1027 * for both the PHY and the link partner. The following
1028 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
1029 * 1999, describes these PAUSE resolution bits and how flow
1030 * control is determined based upon these settings.
1031 * NOTE: DC = Don't Care
1032 *
1033 * LOCAL DEVICE | LINK PARTNER
1034 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
1035 *-------|---------|-------|---------|--------------------
1036 * 0 | 0 | DC | DC | e1000_fc_none
1037 * 0 | 1 | 0 | DC | e1000_fc_none
1038 * 0 | 1 | 1 | 0 | e1000_fc_none
1039 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
1040 * 1 | 0 | 0 | DC | e1000_fc_none
1041 * 1 | DC | 1 | DC | e1000_fc_full
1042 * 1 | 1 | 0 | 0 | e1000_fc_none
1043 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
1044 *
1045 */
1046 /* Are both PAUSE bits set to 1? If so, this implies
1047 * Symmetric Flow Control is enabled at both ends. The
1048 * ASM_DIR bits are irrelevant per the spec.
1049 *
1050 * For Symmetric Flow Control:
1051 *
1052 * LOCAL DEVICE | LINK PARTNER
1053 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
1054 *-------|---------|-------|---------|--------------------
1055 * 1 | DC | 1 | DC | E1000_fc_full
1056 *
1057 */
1058 if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
1059 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
1060 /* Now we need to check if the user selected RX ONLY
1061 * of pause frames. In this case, we had to advertise
1062 * FULL flow control because we could not advertise RX
1063 * ONLY. Hence, we must now check to see if we need to
1064 * turn OFF the TRANSMISSION of PAUSE frames.
1065 */
1066 if (mac->original_fc == e1000_fc_full) {
1067 mac->fc = e1000_fc_full;
1068 hw_dbg(hw, "Flow Control = FULL.\r\n");
1069 } else {
1070 mac->fc = e1000_fc_rx_pause;
1071 hw_dbg(hw, "Flow Control = "
1072 "RX PAUSE frames only.\r\n");
1073 }
1074 }
1075 /* For receiving PAUSE frames ONLY.
1076 *
1077 * LOCAL DEVICE | LINK PARTNER
1078 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
1079 *-------|---------|-------|---------|--------------------
1080 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
1081 *
1082 */
1083 else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
1084 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
1085 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
1086 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
1087 mac->fc = e1000_fc_tx_pause;
1088 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\r\n");
1089 }
1090 /* For transmitting PAUSE frames ONLY.
1091 *
1092 * LOCAL DEVICE | LINK PARTNER
1093 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
1094 *-------|---------|-------|---------|--------------------
1095 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
1096 *
1097 */
1098 else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
1099 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
1100 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
1101 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
1102 mac->fc = e1000_fc_rx_pause;
1103 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\r\n");
1104 }
1105 /* Per the IEEE spec, at this point flow control should be
1106 * disabled. However, we want to consider that we could
1107 * be connected to a legacy switch that doesn't advertise
1108 * desired flow control, but can be forced on the link
1109 * partner. So if we advertised no flow control, that is
1110 * what we will resolve to. If we advertised some kind of
1111 * receive capability (Rx Pause Only or Full Flow Control)
1112 * and the link partner advertised none, we will configure
1113 * ourselves to enable Rx Flow Control only. We can do
1114 * this safely for two reasons: If the link partner really
1115 * didn't want flow control enabled, and we enable Rx, no
1116 * harm done since we won't be receiving any PAUSE frames
1117 * anyway. If the intent on the link partner was to have
1118 * flow control enabled, then by us enabling RX only, we
1119 * can at least receive pause frames and process them.
1120 * This is a good idea because in most cases, since we are
1121 * predominantly a server NIC, more times than not we will
1122 * be asked to delay transmission of packets than asking
1123 * our link partner to pause transmission of frames.
1124 */
1125 else if ((mac->original_fc == e1000_fc_none) ||
1126 (mac->original_fc == e1000_fc_tx_pause)) {
1127 mac->fc = e1000_fc_none;
1128 hw_dbg(hw, "Flow Control = NONE.\r\n");
1129 } else {
1130 mac->fc = e1000_fc_rx_pause;
1131 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\r\n");
1132 }
1133
1134 /* Now we need to do one last check... If we auto-
1135 * negotiated to HALF DUPLEX, flow control should not be
1136 * enabled per IEEE 802.3 spec.
1137 */
1138 ret_val = mac->ops.get_link_up_info(hw, &speed, &duplex);
1139 if (ret_val) {
1140 hw_dbg(hw, "Error getting link speed and duplex\n");
1141 return ret_val;
1142 }
1143
1144 if (duplex == HALF_DUPLEX)
1145 mac->fc = e1000_fc_none;
1146
1147 /* Now we call a subroutine to actually force the MAC
1148 * controller to use the correct flow control settings.
1149 */
1150 ret_val = e1000e_force_mac_fc(hw);
1151 if (ret_val) {
1152 hw_dbg(hw, "Error forcing flow control settings\n");
1153 return ret_val;
1154 }
1155 }
1156
1157 return 0;
1158}
1159
1160/**
1161 * e1000e_get_speed_and_duplex_copper - Retreive current speed/duplex
1162 * @hw: pointer to the HW structure
1163 * @speed: stores the current speed
1164 * @duplex: stores the current duplex
1165 *
1166 * Read the status register for the current speed/duplex and store the current
1167 * speed and duplex for copper connections.
1168 **/
1169s32 e1000e_get_speed_and_duplex_copper(struct e1000_hw *hw, u16 *speed, u16 *duplex)
1170{
1171 u32 status;
1172
1173 status = er32(STATUS);
1174 if (status & E1000_STATUS_SPEED_1000) {
1175 *speed = SPEED_1000;
1176 hw_dbg(hw, "1000 Mbs, ");
1177 } else if (status & E1000_STATUS_SPEED_100) {
1178 *speed = SPEED_100;
1179 hw_dbg(hw, "100 Mbs, ");
1180 } else {
1181 *speed = SPEED_10;
1182 hw_dbg(hw, "10 Mbs, ");
1183 }
1184
1185 if (status & E1000_STATUS_FD) {
1186 *duplex = FULL_DUPLEX;
1187 hw_dbg(hw, "Full Duplex\n");
1188 } else {
1189 *duplex = HALF_DUPLEX;
1190 hw_dbg(hw, "Half Duplex\n");
1191 }
1192
1193 return 0;
1194}
1195
1196/**
1197 * e1000e_get_speed_and_duplex_fiber_serdes - Retreive current speed/duplex
1198 * @hw: pointer to the HW structure
1199 * @speed: stores the current speed
1200 * @duplex: stores the current duplex
1201 *
1202 * Sets the speed and duplex to gigabit full duplex (the only possible option)
1203 * for fiber/serdes links.
1204 **/
1205s32 e1000e_get_speed_and_duplex_fiber_serdes(struct e1000_hw *hw, u16 *speed, u16 *duplex)
1206{
1207 *speed = SPEED_1000;
1208 *duplex = FULL_DUPLEX;
1209
1210 return 0;
1211}
1212
1213/**
1214 * e1000e_get_hw_semaphore - Acquire hardware semaphore
1215 * @hw: pointer to the HW structure
1216 *
1217 * Acquire the HW semaphore to access the PHY or NVM
1218 **/
1219s32 e1000e_get_hw_semaphore(struct e1000_hw *hw)
1220{
1221 u32 swsm;
1222 s32 timeout = hw->nvm.word_size + 1;
1223 s32 i = 0;
1224
1225 /* Get the SW semaphore */
1226 while (i < timeout) {
1227 swsm = er32(SWSM);
1228 if (!(swsm & E1000_SWSM_SMBI))
1229 break;
1230
1231 udelay(50);
1232 i++;
1233 }
1234
1235 if (i == timeout) {
1236 hw_dbg(hw, "Driver can't access device - SMBI bit is set.\n");
1237 return -E1000_ERR_NVM;
1238 }
1239
1240 /* Get the FW semaphore. */
1241 for (i = 0; i < timeout; i++) {
1242 swsm = er32(SWSM);
1243 ew32(SWSM, swsm | E1000_SWSM_SWESMBI);
1244
1245 /* Semaphore acquired if bit latched */
1246 if (er32(SWSM) & E1000_SWSM_SWESMBI)
1247 break;
1248
1249 udelay(50);
1250 }
1251
1252 if (i == timeout) {
1253 /* Release semaphores */
1254 e1000e_put_hw_semaphore(hw);
1255 hw_dbg(hw, "Driver can't access the NVM\n");
1256 return -E1000_ERR_NVM;
1257 }
1258
1259 return 0;
1260}
1261
1262/**
1263 * e1000e_put_hw_semaphore - Release hardware semaphore
1264 * @hw: pointer to the HW structure
1265 *
1266 * Release hardware semaphore used to access the PHY or NVM
1267 **/
1268void e1000e_put_hw_semaphore(struct e1000_hw *hw)
1269{
1270 u32 swsm;
1271
1272 swsm = er32(SWSM);
1273 swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
1274 ew32(SWSM, swsm);
1275}
1276
1277/**
1278 * e1000e_get_auto_rd_done - Check for auto read completion
1279 * @hw: pointer to the HW structure
1280 *
1281 * Check EEPROM for Auto Read done bit.
1282 **/
1283s32 e1000e_get_auto_rd_done(struct e1000_hw *hw)
1284{
1285 s32 i = 0;
1286
1287 while (i < AUTO_READ_DONE_TIMEOUT) {
1288 if (er32(EECD) & E1000_EECD_AUTO_RD)
1289 break;
1290 msleep(1);
1291 i++;
1292 }
1293
1294 if (i == AUTO_READ_DONE_TIMEOUT) {
1295 hw_dbg(hw, "Auto read by HW from NVM has not completed.\n");
1296 return -E1000_ERR_RESET;
1297 }
1298
1299 return 0;
1300}
1301
1302/**
1303 * e1000e_valid_led_default - Verify a valid default LED config
1304 * @hw: pointer to the HW structure
1305 * @data: pointer to the NVM (EEPROM)
1306 *
1307 * Read the EEPROM for the current default LED configuration. If the
1308 * LED configuration is not valid, set to a valid LED configuration.
1309 **/
1310s32 e1000e_valid_led_default(struct e1000_hw *hw, u16 *data)
1311{
1312 s32 ret_val;
1313
1314 ret_val = e1000_read_nvm(hw, NVM_ID_LED_SETTINGS, 1, data);
1315 if (ret_val) {
1316 hw_dbg(hw, "NVM Read Error\n");
1317 return ret_val;
1318 }
1319
1320 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF)
1321 *data = ID_LED_DEFAULT;
1322
1323 return 0;
1324}
1325
1326/**
1327 * e1000e_id_led_init -
1328 * @hw: pointer to the HW structure
1329 *
1330 **/
1331s32 e1000e_id_led_init(struct e1000_hw *hw)
1332{
1333 struct e1000_mac_info *mac = &hw->mac;
1334 s32 ret_val;
1335 const u32 ledctl_mask = 0x000000FF;
1336 const u32 ledctl_on = E1000_LEDCTL_MODE_LED_ON;
1337 const u32 ledctl_off = E1000_LEDCTL_MODE_LED_OFF;
1338 u16 data, i, temp;
1339 const u16 led_mask = 0x0F;
1340
1341 ret_val = hw->nvm.ops.valid_led_default(hw, &data);
1342 if (ret_val)
1343 return ret_val;
1344
1345 mac->ledctl_default = er32(LEDCTL);
1346 mac->ledctl_mode1 = mac->ledctl_default;
1347 mac->ledctl_mode2 = mac->ledctl_default;
1348
1349 for (i = 0; i < 4; i++) {
1350 temp = (data >> (i << 2)) & led_mask;
1351 switch (temp) {
1352 case ID_LED_ON1_DEF2:
1353 case ID_LED_ON1_ON2:
1354 case ID_LED_ON1_OFF2:
1355 mac->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
1356 mac->ledctl_mode1 |= ledctl_on << (i << 3);
1357 break;
1358 case ID_LED_OFF1_DEF2:
1359 case ID_LED_OFF1_ON2:
1360 case ID_LED_OFF1_OFF2:
1361 mac->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
1362 mac->ledctl_mode1 |= ledctl_off << (i << 3);
1363 break;
1364 default:
1365 /* Do nothing */
1366 break;
1367 }
1368 switch (temp) {
1369 case ID_LED_DEF1_ON2:
1370 case ID_LED_ON1_ON2:
1371 case ID_LED_OFF1_ON2:
1372 mac->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
1373 mac->ledctl_mode2 |= ledctl_on << (i << 3);
1374 break;
1375 case ID_LED_DEF1_OFF2:
1376 case ID_LED_ON1_OFF2:
1377 case ID_LED_OFF1_OFF2:
1378 mac->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
1379 mac->ledctl_mode2 |= ledctl_off << (i << 3);
1380 break;
1381 default:
1382 /* Do nothing */
1383 break;
1384 }
1385 }
1386
1387 return 0;
1388}
1389
1390/**
1391 * e1000e_cleanup_led_generic - Set LED config to default operation
1392 * @hw: pointer to the HW structure
1393 *
1394 * Remove the current LED configuration and set the LED configuration
1395 * to the default value, saved from the EEPROM.
1396 **/
1397s32 e1000e_cleanup_led_generic(struct e1000_hw *hw)
1398{
1399 ew32(LEDCTL, hw->mac.ledctl_default);
1400 return 0;
1401}
1402
1403/**
1404 * e1000e_blink_led - Blink LED
1405 * @hw: pointer to the HW structure
1406 *
1407 * Blink the led's which are set to be on.
1408 **/
1409s32 e1000e_blink_led(struct e1000_hw *hw)
1410{
1411 u32 ledctl_blink = 0;
1412 u32 i;
1413
1414 if (hw->media_type == e1000_media_type_fiber) {
1415 /* always blink LED0 for PCI-E fiber */
1416 ledctl_blink = E1000_LEDCTL_LED0_BLINK |
1417 (E1000_LEDCTL_MODE_LED_ON << E1000_LEDCTL_LED0_MODE_SHIFT);
1418 } else {
1419 /* set the blink bit for each LED that's "on" (0x0E)
1420 * in ledctl_mode2 */
1421 ledctl_blink = hw->mac.ledctl_mode2;
1422 for (i = 0; i < 4; i++)
1423 if (((hw->mac.ledctl_mode2 >> (i * 8)) & 0xFF) ==
1424 E1000_LEDCTL_MODE_LED_ON)
1425 ledctl_blink |= (E1000_LEDCTL_LED0_BLINK <<
1426 (i * 8));
1427 }
1428
1429 ew32(LEDCTL, ledctl_blink);
1430
1431 return 0;
1432}
1433
1434/**
1435 * e1000e_led_on_generic - Turn LED on
1436 * @hw: pointer to the HW structure
1437 *
1438 * Turn LED on.
1439 **/
1440s32 e1000e_led_on_generic(struct e1000_hw *hw)
1441{
1442 u32 ctrl;
1443
1444 switch (hw->media_type) {
1445 case e1000_media_type_fiber:
1446 ctrl = er32(CTRL);
1447 ctrl &= ~E1000_CTRL_SWDPIN0;
1448 ctrl |= E1000_CTRL_SWDPIO0;
1449 ew32(CTRL, ctrl);
1450 break;
1451 case e1000_media_type_copper:
1452 ew32(LEDCTL, hw->mac.ledctl_mode2);
1453 break;
1454 default:
1455 break;
1456 }
1457
1458 return 0;
1459}
1460
1461/**
1462 * e1000e_led_off_generic - Turn LED off
1463 * @hw: pointer to the HW structure
1464 *
1465 * Turn LED off.
1466 **/
1467s32 e1000e_led_off_generic(struct e1000_hw *hw)
1468{
1469 u32 ctrl;
1470
1471 switch (hw->media_type) {
1472 case e1000_media_type_fiber:
1473 ctrl = er32(CTRL);
1474 ctrl |= E1000_CTRL_SWDPIN0;
1475 ctrl |= E1000_CTRL_SWDPIO0;
1476 ew32(CTRL, ctrl);
1477 break;
1478 case e1000_media_type_copper:
1479 ew32(LEDCTL, hw->mac.ledctl_mode1);
1480 break;
1481 default:
1482 break;
1483 }
1484
1485 return 0;
1486}
1487
1488/**
1489 * e1000e_set_pcie_no_snoop - Set PCI-express capabilities
1490 * @hw: pointer to the HW structure
1491 * @no_snoop: bitmap of snoop events
1492 *
1493 * Set the PCI-express register to snoop for events enabled in 'no_snoop'.
1494 **/
1495void e1000e_set_pcie_no_snoop(struct e1000_hw *hw, u32 no_snoop)
1496{
1497 u32 gcr;
1498
1499 if (no_snoop) {
1500 gcr = er32(GCR);
1501 gcr &= ~(PCIE_NO_SNOOP_ALL);
1502 gcr |= no_snoop;
1503 ew32(GCR, gcr);
1504 }
1505}
1506
1507/**
1508 * e1000e_disable_pcie_master - Disables PCI-express master access
1509 * @hw: pointer to the HW structure
1510 *
1511 * Returns 0 if successful, else returns -10
1512 * (-E1000_ERR_MASTER_REQUESTS_PENDING) if master disable bit has not casued
1513 * the master requests to be disabled.
1514 *
1515 * Disables PCI-Express master access and verifies there are no pending
1516 * requests.
1517 **/
1518s32 e1000e_disable_pcie_master(struct e1000_hw *hw)
1519{
1520 u32 ctrl;
1521 s32 timeout = MASTER_DISABLE_TIMEOUT;
1522
1523 ctrl = er32(CTRL);
1524 ctrl |= E1000_CTRL_GIO_MASTER_DISABLE;
1525 ew32(CTRL, ctrl);
1526
1527 while (timeout) {
1528 if (!(er32(STATUS) &
1529 E1000_STATUS_GIO_MASTER_ENABLE))
1530 break;
1531 udelay(100);
1532 timeout--;
1533 }
1534
1535 if (!timeout) {
1536 hw_dbg(hw, "Master requests are pending.\n");
1537 return -E1000_ERR_MASTER_REQUESTS_PENDING;
1538 }
1539
1540 return 0;
1541}
1542
1543/**
1544 * e1000e_reset_adaptive - Reset Adaptive Interframe Spacing
1545 * @hw: pointer to the HW structure
1546 *
1547 * Reset the Adaptive Interframe Spacing throttle to default values.
1548 **/
1549void e1000e_reset_adaptive(struct e1000_hw *hw)
1550{
1551 struct e1000_mac_info *mac = &hw->mac;
1552
1553 mac->current_ifs_val = 0;
1554 mac->ifs_min_val = IFS_MIN;
1555 mac->ifs_max_val = IFS_MAX;
1556 mac->ifs_step_size = IFS_STEP;
1557 mac->ifs_ratio = IFS_RATIO;
1558
1559 mac->in_ifs_mode = 0;
1560 ew32(AIT, 0);
1561}
1562
1563/**
1564 * e1000e_update_adaptive - Update Adaptive Interframe Spacing
1565 * @hw: pointer to the HW structure
1566 *
1567 * Update the Adaptive Interframe Spacing Throttle value based on the
1568 * time between transmitted packets and time between collisions.
1569 **/
1570void e1000e_update_adaptive(struct e1000_hw *hw)
1571{
1572 struct e1000_mac_info *mac = &hw->mac;
1573
1574 if ((mac->collision_delta * mac->ifs_ratio) > mac->tx_packet_delta) {
1575 if (mac->tx_packet_delta > MIN_NUM_XMITS) {
1576 mac->in_ifs_mode = 1;
1577 if (mac->current_ifs_val < mac->ifs_max_val) {
1578 if (!mac->current_ifs_val)
1579 mac->current_ifs_val = mac->ifs_min_val;
1580 else
1581 mac->current_ifs_val +=
1582 mac->ifs_step_size;
1583 ew32(AIT,
1584 mac->current_ifs_val);
1585 }
1586 }
1587 } else {
1588 if (mac->in_ifs_mode &&
1589 (mac->tx_packet_delta <= MIN_NUM_XMITS)) {
1590 mac->current_ifs_val = 0;
1591 mac->in_ifs_mode = 0;
1592 ew32(AIT, 0);
1593 }
1594 }
1595}
1596
1597/**
1598 * e1000_raise_eec_clk - Raise EEPROM clock
1599 * @hw: pointer to the HW structure
1600 * @eecd: pointer to the EEPROM
1601 *
1602 * Enable/Raise the EEPROM clock bit.
1603 **/
1604static void e1000_raise_eec_clk(struct e1000_hw *hw, u32 *eecd)
1605{
1606 *eecd = *eecd | E1000_EECD_SK;
1607 ew32(EECD, *eecd);
1608 e1e_flush();
1609 udelay(hw->nvm.delay_usec);
1610}
1611
1612/**
1613 * e1000_lower_eec_clk - Lower EEPROM clock
1614 * @hw: pointer to the HW structure
1615 * @eecd: pointer to the EEPROM
1616 *
1617 * Clear/Lower the EEPROM clock bit.
1618 **/
1619static void e1000_lower_eec_clk(struct e1000_hw *hw, u32 *eecd)
1620{
1621 *eecd = *eecd & ~E1000_EECD_SK;
1622 ew32(EECD, *eecd);
1623 e1e_flush();
1624 udelay(hw->nvm.delay_usec);
1625}
1626
1627/**
1628 * e1000_shift_out_eec_bits - Shift data bits our to the EEPROM
1629 * @hw: pointer to the HW structure
1630 * @data: data to send to the EEPROM
1631 * @count: number of bits to shift out
1632 *
1633 * We need to shift 'count' bits out to the EEPROM. So, the value in the
1634 * "data" parameter will be shifted out to the EEPROM one bit at a time.
1635 * In order to do this, "data" must be broken down into bits.
1636 **/
1637static void e1000_shift_out_eec_bits(struct e1000_hw *hw, u16 data, u16 count)
1638{
1639 struct e1000_nvm_info *nvm = &hw->nvm;
1640 u32 eecd = er32(EECD);
1641 u32 mask;
1642
1643 mask = 0x01 << (count - 1);
1644 if (nvm->type == e1000_nvm_eeprom_spi)
1645 eecd |= E1000_EECD_DO;
1646
1647 do {
1648 eecd &= ~E1000_EECD_DI;
1649
1650 if (data & mask)
1651 eecd |= E1000_EECD_DI;
1652
1653 ew32(EECD, eecd);
1654 e1e_flush();
1655
1656 udelay(nvm->delay_usec);
1657
1658 e1000_raise_eec_clk(hw, &eecd);
1659 e1000_lower_eec_clk(hw, &eecd);
1660
1661 mask >>= 1;
1662 } while (mask);
1663
1664 eecd &= ~E1000_EECD_DI;
1665 ew32(EECD, eecd);
1666}
1667
1668/**
1669 * e1000_shift_in_eec_bits - Shift data bits in from the EEPROM
1670 * @hw: pointer to the HW structure
1671 * @count: number of bits to shift in
1672 *
1673 * In order to read a register from the EEPROM, we need to shift 'count' bits
1674 * in from the EEPROM. Bits are "shifted in" by raising the clock input to
1675 * the EEPROM (setting the SK bit), and then reading the value of the data out
1676 * "DO" bit. During this "shifting in" process the data in "DI" bit should
1677 * always be clear.
1678 **/
1679static u16 e1000_shift_in_eec_bits(struct e1000_hw *hw, u16 count)
1680{
1681 u32 eecd;
1682 u32 i;
1683 u16 data;
1684
1685 eecd = er32(EECD);
1686
1687 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
1688 data = 0;
1689
1690 for (i = 0; i < count; i++) {
1691 data <<= 1;
1692 e1000_raise_eec_clk(hw, &eecd);
1693
1694 eecd = er32(EECD);
1695
1696 eecd &= ~E1000_EECD_DI;
1697 if (eecd & E1000_EECD_DO)
1698 data |= 1;
1699
1700 e1000_lower_eec_clk(hw, &eecd);
1701 }
1702
1703 return data;
1704}
1705
1706/**
1707 * e1000e_poll_eerd_eewr_done - Poll for EEPROM read/write completion
1708 * @hw: pointer to the HW structure
1709 * @ee_reg: EEPROM flag for polling
1710 *
1711 * Polls the EEPROM status bit for either read or write completion based
1712 * upon the value of 'ee_reg'.
1713 **/
1714s32 e1000e_poll_eerd_eewr_done(struct e1000_hw *hw, int ee_reg)
1715{
1716 u32 attempts = 100000;
1717 u32 i, reg = 0;
1718
1719 for (i = 0; i < attempts; i++) {
1720 if (ee_reg == E1000_NVM_POLL_READ)
1721 reg = er32(EERD);
1722 else
1723 reg = er32(EEWR);
1724
1725 if (reg & E1000_NVM_RW_REG_DONE)
1726 return 0;
1727
1728 udelay(5);
1729 }
1730
1731 return -E1000_ERR_NVM;
1732}
1733
1734/**
1735 * e1000e_acquire_nvm - Generic request for access to EEPROM
1736 * @hw: pointer to the HW structure
1737 *
1738 * Set the EEPROM access request bit and wait for EEPROM access grant bit.
1739 * Return successful if access grant bit set, else clear the request for
1740 * EEPROM access and return -E1000_ERR_NVM (-1).
1741 **/
1742s32 e1000e_acquire_nvm(struct e1000_hw *hw)
1743{
1744 u32 eecd = er32(EECD);
1745 s32 timeout = E1000_NVM_GRANT_ATTEMPTS;
1746
1747 ew32(EECD, eecd | E1000_EECD_REQ);
1748 eecd = er32(EECD);
1749
1750 while (timeout) {
1751 if (eecd & E1000_EECD_GNT)
1752 break;
1753 udelay(5);
1754 eecd = er32(EECD);
1755 timeout--;
1756 }
1757
1758 if (!timeout) {
1759 eecd &= ~E1000_EECD_REQ;
1760 ew32(EECD, eecd);
1761 hw_dbg(hw, "Could not acquire NVM grant\n");
1762 return -E1000_ERR_NVM;
1763 }
1764
1765 return 0;
1766}
1767
1768/**
1769 * e1000_standby_nvm - Return EEPROM to standby state
1770 * @hw: pointer to the HW structure
1771 *
1772 * Return the EEPROM to a standby state.
1773 **/
1774static void e1000_standby_nvm(struct e1000_hw *hw)
1775{
1776 struct e1000_nvm_info *nvm = &hw->nvm;
1777 u32 eecd = er32(EECD);
1778
1779 if (nvm->type == e1000_nvm_eeprom_spi) {
1780 /* Toggle CS to flush commands */
1781 eecd |= E1000_EECD_CS;
1782 ew32(EECD, eecd);
1783 e1e_flush();
1784 udelay(nvm->delay_usec);
1785 eecd &= ~E1000_EECD_CS;
1786 ew32(EECD, eecd);
1787 e1e_flush();
1788 udelay(nvm->delay_usec);
1789 }
1790}
1791
1792/**
1793 * e1000_stop_nvm - Terminate EEPROM command
1794 * @hw: pointer to the HW structure
1795 *
1796 * Terminates the current command by inverting the EEPROM's chip select pin.
1797 **/
1798static void e1000_stop_nvm(struct e1000_hw *hw)
1799{
1800 u32 eecd;
1801
1802 eecd = er32(EECD);
1803 if (hw->nvm.type == e1000_nvm_eeprom_spi) {
1804 /* Pull CS high */
1805 eecd |= E1000_EECD_CS;
1806 e1000_lower_eec_clk(hw, &eecd);
1807 }
1808}
1809
1810/**
1811 * e1000e_release_nvm - Release exclusive access to EEPROM
1812 * @hw: pointer to the HW structure
1813 *
1814 * Stop any current commands to the EEPROM and clear the EEPROM request bit.
1815 **/
1816void e1000e_release_nvm(struct e1000_hw *hw)
1817{
1818 u32 eecd;
1819
1820 e1000_stop_nvm(hw);
1821
1822 eecd = er32(EECD);
1823 eecd &= ~E1000_EECD_REQ;
1824 ew32(EECD, eecd);
1825}
1826
1827/**
1828 * e1000_ready_nvm_eeprom - Prepares EEPROM for read/write
1829 * @hw: pointer to the HW structure
1830 *
1831 * Setups the EEPROM for reading and writing.
1832 **/
1833static s32 e1000_ready_nvm_eeprom(struct e1000_hw *hw)
1834{
1835 struct e1000_nvm_info *nvm = &hw->nvm;
1836 u32 eecd = er32(EECD);
1837 u16 timeout = 0;
1838 u8 spi_stat_reg;
1839
1840 if (nvm->type == e1000_nvm_eeprom_spi) {
1841 /* Clear SK and CS */
1842 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
1843 ew32(EECD, eecd);
1844 udelay(1);
1845 timeout = NVM_MAX_RETRY_SPI;
1846
1847 /* Read "Status Register" repeatedly until the LSB is cleared.
1848 * The EEPROM will signal that the command has been completed
1849 * by clearing bit 0 of the internal status register. If it's
1850 * not cleared within 'timeout', then error out. */
1851 while (timeout) {
1852 e1000_shift_out_eec_bits(hw, NVM_RDSR_OPCODE_SPI,
1853 hw->nvm.opcode_bits);
1854 spi_stat_reg = (u8)e1000_shift_in_eec_bits(hw, 8);
1855 if (!(spi_stat_reg & NVM_STATUS_RDY_SPI))
1856 break;
1857
1858 udelay(5);
1859 e1000_standby_nvm(hw);
1860 timeout--;
1861 }
1862
1863 if (!timeout) {
1864 hw_dbg(hw, "SPI NVM Status error\n");
1865 return -E1000_ERR_NVM;
1866 }
1867 }
1868
1869 return 0;
1870}
1871
1872/**
1873 * e1000e_read_nvm_spi - Read EEPROM's using SPI
1874 * @hw: pointer to the HW structure
1875 * @offset: offset of word in the EEPROM to read
1876 * @words: number of words to read
1877 * @data: word read from the EEPROM
1878 *
1879 * Reads a 16 bit word from the EEPROM.
1880 **/
1881s32 e1000e_read_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
1882{
1883 struct e1000_nvm_info *nvm = &hw->nvm;
1884 u32 i = 0;
1885 s32 ret_val;
1886 u16 word_in;
1887 u8 read_opcode = NVM_READ_OPCODE_SPI;
1888
1889 /* A check for invalid values: offset too large, too many words,
1890 * and not enough words. */
1891 if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
1892 (words == 0)) {
1893 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
1894 return -E1000_ERR_NVM;
1895 }
1896
1897 ret_val = nvm->ops.acquire_nvm(hw);
1898 if (ret_val)
1899 return ret_val;
1900
1901 ret_val = e1000_ready_nvm_eeprom(hw);
1902 if (ret_val) {
1903 nvm->ops.release_nvm(hw);
1904 return ret_val;
1905 }
1906
1907 e1000_standby_nvm(hw);
1908
1909 if ((nvm->address_bits == 8) && (offset >= 128))
1910 read_opcode |= NVM_A8_OPCODE_SPI;
1911
1912 /* Send the READ command (opcode + addr) */
1913 e1000_shift_out_eec_bits(hw, read_opcode, nvm->opcode_bits);
1914 e1000_shift_out_eec_bits(hw, (u16)(offset*2), nvm->address_bits);
1915
1916 /* Read the data. SPI NVMs increment the address with each byte
1917 * read and will roll over if reading beyond the end. This allows
1918 * us to read the whole NVM from any offset */
1919 for (i = 0; i < words; i++) {
1920 word_in = e1000_shift_in_eec_bits(hw, 16);
1921 data[i] = (word_in >> 8) | (word_in << 8);
1922 }
1923
1924 nvm->ops.release_nvm(hw);
1925 return 0;
1926}
1927
1928/**
1929 * e1000e_read_nvm_eerd - Reads EEPROM using EERD register
1930 * @hw: pointer to the HW structure
1931 * @offset: offset of word in the EEPROM to read
1932 * @words: number of words to read
1933 * @data: word read from the EEPROM
1934 *
1935 * Reads a 16 bit word from the EEPROM using the EERD register.
1936 **/
1937s32 e1000e_read_nvm_eerd(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
1938{
1939 struct e1000_nvm_info *nvm = &hw->nvm;
1940 u32 i, eerd = 0;
1941 s32 ret_val = 0;
1942
1943 /* A check for invalid values: offset too large, too many words,
1944 * and not enough words. */
1945 if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
1946 (words == 0)) {
1947 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
1948 return -E1000_ERR_NVM;
1949 }
1950
1951 for (i = 0; i < words; i++) {
1952 eerd = ((offset+i) << E1000_NVM_RW_ADDR_SHIFT) +
1953 E1000_NVM_RW_REG_START;
1954
1955 ew32(EERD, eerd);
1956 ret_val = e1000e_poll_eerd_eewr_done(hw, E1000_NVM_POLL_READ);
1957 if (ret_val)
1958 break;
1959
1960 data[i] = (er32(EERD) >>
1961 E1000_NVM_RW_REG_DATA);
1962 }
1963
1964 return ret_val;
1965}
1966
1967/**
1968 * e1000e_write_nvm_spi - Write to EEPROM using SPI
1969 * @hw: pointer to the HW structure
1970 * @offset: offset within the EEPROM to be written to
1971 * @words: number of words to write
1972 * @data: 16 bit word(s) to be written to the EEPROM
1973 *
1974 * Writes data to EEPROM at offset using SPI interface.
1975 *
1976 * If e1000e_update_nvm_checksum is not called after this function , the
1977 * EEPROM will most likley contain an invalid checksum.
1978 **/
1979s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
1980{
1981 struct e1000_nvm_info *nvm = &hw->nvm;
1982 s32 ret_val;
1983 u16 widx = 0;
1984
1985 /* A check for invalid values: offset too large, too many words,
1986 * and not enough words. */
1987 if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
1988 (words == 0)) {
1989 hw_dbg(hw, "nvm parameter(s) out of bounds\n");
1990 return -E1000_ERR_NVM;
1991 }
1992
1993 ret_val = nvm->ops.acquire_nvm(hw);
1994 if (ret_val)
1995 return ret_val;
1996
1997 msleep(10);
1998
1999 while (widx < words) {
2000 u8 write_opcode = NVM_WRITE_OPCODE_SPI;
2001
2002 ret_val = e1000_ready_nvm_eeprom(hw);
2003 if (ret_val) {
2004 nvm->ops.release_nvm(hw);
2005 return ret_val;
2006 }
2007
2008 e1000_standby_nvm(hw);
2009
2010 /* Send the WRITE ENABLE command (8 bit opcode) */
2011 e1000_shift_out_eec_bits(hw, NVM_WREN_OPCODE_SPI,
2012 nvm->opcode_bits);
2013
2014 e1000_standby_nvm(hw);
2015
2016 /* Some SPI eeproms use the 8th address bit embedded in the
2017 * opcode */
2018 if ((nvm->address_bits == 8) && (offset >= 128))
2019 write_opcode |= NVM_A8_OPCODE_SPI;
2020
2021 /* Send the Write command (8-bit opcode + addr) */
2022 e1000_shift_out_eec_bits(hw, write_opcode, nvm->opcode_bits);
2023 e1000_shift_out_eec_bits(hw, (u16)((offset + widx) * 2),
2024 nvm->address_bits);
2025
2026 /* Loop to allow for up to whole page write of eeprom */
2027 while (widx < words) {
2028 u16 word_out = data[widx];
2029 word_out = (word_out >> 8) | (word_out << 8);
2030 e1000_shift_out_eec_bits(hw, word_out, 16);
2031 widx++;
2032
2033 if ((((offset + widx) * 2) % nvm->page_size) == 0) {
2034 e1000_standby_nvm(hw);
2035 break;
2036 }
2037 }
2038 }
2039
2040 msleep(10);
2041 return 0;
2042}
2043
2044/**
2045 * e1000e_read_mac_addr - Read device MAC address
2046 * @hw: pointer to the HW structure
2047 *
2048 * Reads the device MAC address from the EEPROM and stores the value.
2049 * Since devices with two ports use the same EEPROM, we increment the
2050 * last bit in the MAC address for the second port.
2051 **/
2052s32 e1000e_read_mac_addr(struct e1000_hw *hw)
2053{
2054 s32 ret_val;
2055 u16 offset, nvm_data, i;
2056
2057 for (i = 0; i < ETH_ALEN; i += 2) {
2058 offset = i >> 1;
2059 ret_val = e1000_read_nvm(hw, offset, 1, &nvm_data);
2060 if (ret_val) {
2061 hw_dbg(hw, "NVM Read Error\n");
2062 return ret_val;
2063 }
2064 hw->mac.perm_addr[i] = (u8)(nvm_data & 0xFF);
2065 hw->mac.perm_addr[i+1] = (u8)(nvm_data >> 8);
2066 }
2067
2068 /* Flip last bit of mac address if we're on second port */
2069 if (hw->bus.func == E1000_FUNC_1)
2070 hw->mac.perm_addr[5] ^= 1;
2071
2072 for (i = 0; i < ETH_ALEN; i++)
2073 hw->mac.addr[i] = hw->mac.perm_addr[i];
2074
2075 return 0;
2076}
2077
2078/**
2079 * e1000e_validate_nvm_checksum_generic - Validate EEPROM checksum
2080 * @hw: pointer to the HW structure
2081 *
2082 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM
2083 * and then verifies that the sum of the EEPROM is equal to 0xBABA.
2084 **/
2085s32 e1000e_validate_nvm_checksum_generic(struct e1000_hw *hw)
2086{
2087 s32 ret_val;
2088 u16 checksum = 0;
2089 u16 i, nvm_data;
2090
2091 for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
2092 ret_val = e1000_read_nvm(hw, i, 1, &nvm_data);
2093 if (ret_val) {
2094 hw_dbg(hw, "NVM Read Error\n");
2095 return ret_val;
2096 }
2097 checksum += nvm_data;
2098 }
2099
2100 if (checksum != (u16) NVM_SUM) {
2101 hw_dbg(hw, "NVM Checksum Invalid\n");
2102 return -E1000_ERR_NVM;
2103 }
2104
2105 return 0;
2106}
2107
2108/**
2109 * e1000e_update_nvm_checksum_generic - Update EEPROM checksum
2110 * @hw: pointer to the HW structure
2111 *
2112 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
2113 * up to the checksum. Then calculates the EEPROM checksum and writes the
2114 * value to the EEPROM.
2115 **/
2116s32 e1000e_update_nvm_checksum_generic(struct e1000_hw *hw)
2117{
2118 s32 ret_val;
2119 u16 checksum = 0;
2120 u16 i, nvm_data;
2121
2122 for (i = 0; i < NVM_CHECKSUM_REG; i++) {
2123 ret_val = e1000_read_nvm(hw, i, 1, &nvm_data);
2124 if (ret_val) {
2125 hw_dbg(hw, "NVM Read Error while updating checksum.\n");
2126 return ret_val;
2127 }
2128 checksum += nvm_data;
2129 }
2130 checksum = (u16) NVM_SUM - checksum;
2131 ret_val = e1000_write_nvm(hw, NVM_CHECKSUM_REG, 1, &checksum);
2132 if (ret_val)
2133 hw_dbg(hw, "NVM Write Error while updating checksum.\n");
2134
2135 return ret_val;
2136}
2137
2138/**
2139 * e1000e_reload_nvm - Reloads EEPROM
2140 * @hw: pointer to the HW structure
2141 *
2142 * Reloads the EEPROM by setting the "Reinitialize from EEPROM" bit in the
2143 * extended control register.
2144 **/
2145void e1000e_reload_nvm(struct e1000_hw *hw)
2146{
2147 u32 ctrl_ext;
2148
2149 udelay(10);
2150 ctrl_ext = er32(CTRL_EXT);
2151 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
2152 ew32(CTRL_EXT, ctrl_ext);
2153 e1e_flush();
2154}
2155
2156/**
2157 * e1000_calculate_checksum - Calculate checksum for buffer
2158 * @buffer: pointer to EEPROM
2159 * @length: size of EEPROM to calculate a checksum for
2160 *
2161 * Calculates the checksum for some buffer on a specified length. The
2162 * checksum calculated is returned.
2163 **/
2164static u8 e1000_calculate_checksum(u8 *buffer, u32 length)
2165{
2166 u32 i;
2167 u8 sum = 0;
2168
2169 if (!buffer)
2170 return 0;
2171
2172 for (i = 0; i < length; i++)
2173 sum += buffer[i];
2174
2175 return (u8) (0 - sum);
2176}
2177
2178/**
2179 * e1000_mng_enable_host_if - Checks host interface is enabled
2180 * @hw: pointer to the HW structure
2181 *
2182 * Returns E1000_success upon success, else E1000_ERR_HOST_INTERFACE_COMMAND
2183 *
2184 * This function checks whether the HOST IF is enabled for command operaton
2185 * and also checks whether the previous command is completed. It busy waits
2186 * in case of previous command is not completed.
2187 **/
2188static s32 e1000_mng_enable_host_if(struct e1000_hw *hw)
2189{
2190 u32 hicr;
2191 u8 i;
2192
2193 /* Check that the host interface is enabled. */
2194 hicr = er32(HICR);
2195 if ((hicr & E1000_HICR_EN) == 0) {
2196 hw_dbg(hw, "E1000_HOST_EN bit disabled.\n");
2197 return -E1000_ERR_HOST_INTERFACE_COMMAND;
2198 }
2199 /* check the previous command is completed */
2200 for (i = 0; i < E1000_MNG_DHCP_COMMAND_TIMEOUT; i++) {
2201 hicr = er32(HICR);
2202 if (!(hicr & E1000_HICR_C))
2203 break;
2204 mdelay(1);
2205 }
2206
2207 if (i == E1000_MNG_DHCP_COMMAND_TIMEOUT) {
2208 hw_dbg(hw, "Previous command timeout failed .\n");
2209 return -E1000_ERR_HOST_INTERFACE_COMMAND;
2210 }
2211
2212 return 0;
2213}
2214
2215/**
2216 * e1000e_check_mng_mode - check managament mode
2217 * @hw: pointer to the HW structure
2218 *
2219 * Reads the firmware semaphore register and returns true (>0) if
2220 * manageability is enabled, else false (0).
2221 **/
2222bool e1000e_check_mng_mode(struct e1000_hw *hw)
2223{
2224 u32 fwsm = er32(FWSM);
2225
2226 return (fwsm & E1000_FWSM_MODE_MASK) == hw->mac.ops.mng_mode_enab;
2227}
2228
2229/**
2230 * e1000e_enable_tx_pkt_filtering - Enable packet filtering on TX
2231 * @hw: pointer to the HW structure
2232 *
2233 * Enables packet filtering on transmit packets if manageability is enabled
2234 * and host interface is enabled.
2235 **/
2236bool e1000e_enable_tx_pkt_filtering(struct e1000_hw *hw)
2237{
2238 struct e1000_host_mng_dhcp_cookie *hdr = &hw->mng_cookie;
2239 u32 *buffer = (u32 *)&hw->mng_cookie;
2240 u32 offset;
2241 s32 ret_val, hdr_csum, csum;
2242 u8 i, len;
2243
2244 /* No manageability, no filtering */
2245 if (!e1000e_check_mng_mode(hw)) {
2246 hw->mac.tx_pkt_filtering = 0;
2247 return 0;
2248 }
2249
2250 /* If we can't read from the host interface for whatever
2251 * reason, disable filtering.
2252 */
2253 ret_val = e1000_mng_enable_host_if(hw);
2254 if (ret_val != 0) {
2255 hw->mac.tx_pkt_filtering = 0;
2256 return ret_val;
2257 }
2258
2259 /* Read in the header. Length and offset are in dwords. */
2260 len = E1000_MNG_DHCP_COOKIE_LENGTH >> 2;
2261 offset = E1000_MNG_DHCP_COOKIE_OFFSET >> 2;
2262 for (i = 0; i < len; i++)
2263 *(buffer + i) = E1000_READ_REG_ARRAY(hw, E1000_HOST_IF, offset + i);
2264 hdr_csum = hdr->checksum;
2265 hdr->checksum = 0;
2266 csum = e1000_calculate_checksum((u8 *)hdr,
2267 E1000_MNG_DHCP_COOKIE_LENGTH);
2268 /* If either the checksums or signature don't match, then
2269 * the cookie area isn't considered valid, in which case we
2270 * take the safe route of assuming Tx filtering is enabled.
2271 */
2272 if ((hdr_csum != csum) || (hdr->signature != E1000_IAMT_SIGNATURE)) {
2273 hw->mac.tx_pkt_filtering = 1;
2274 return 1;
2275 }
2276
2277 /* Cookie area is valid, make the final check for filtering. */
2278 if (!(hdr->status & E1000_MNG_DHCP_COOKIE_STATUS_PARSING)) {
2279 hw->mac.tx_pkt_filtering = 0;
2280 return 0;
2281 }
2282
2283 hw->mac.tx_pkt_filtering = 1;
2284 return 1;
2285}
2286
2287/**
2288 * e1000_mng_write_cmd_header - Writes manageability command header
2289 * @hw: pointer to the HW structure
2290 * @hdr: pointer to the host interface command header
2291 *
2292 * Writes the command header after does the checksum calculation.
2293 **/
2294static s32 e1000_mng_write_cmd_header(struct e1000_hw *hw,
2295 struct e1000_host_mng_command_header *hdr)
2296{
2297 u16 i, length = sizeof(struct e1000_host_mng_command_header);
2298
2299 /* Write the whole command header structure with new checksum. */
2300
2301 hdr->checksum = e1000_calculate_checksum((u8 *)hdr, length);
2302
2303 length >>= 2;
2304 /* Write the relevant command block into the ram area. */
2305 for (i = 0; i < length; i++) {
2306 E1000_WRITE_REG_ARRAY(hw, E1000_HOST_IF, i,
2307 *((u32 *) hdr + i));
2308 e1e_flush();
2309 }
2310
2311 return 0;
2312}
2313
2314/**
2315 * e1000_mng_host_if_write - Writes to the manageability host interface
2316 * @hw: pointer to the HW structure
2317 * @buffer: pointer to the host interface buffer
2318 * @length: size of the buffer
2319 * @offset: location in the buffer to write to
2320 * @sum: sum of the data (not checksum)
2321 *
2322 * This function writes the buffer content at the offset given on the host if.
2323 * It also does alignment considerations to do the writes in most efficient
2324 * way. Also fills up the sum of the buffer in *buffer parameter.
2325 **/
2326static s32 e1000_mng_host_if_write(struct e1000_hw *hw, u8 *buffer,
2327 u16 length, u16 offset, u8 *sum)
2328{
2329 u8 *tmp;
2330 u8 *bufptr = buffer;
2331 u32 data = 0;
2332 u16 remaining, i, j, prev_bytes;
2333
2334 /* sum = only sum of the data and it is not checksum */
2335
2336 if (length == 0 || offset + length > E1000_HI_MAX_MNG_DATA_LENGTH)
2337 return -E1000_ERR_PARAM;
2338
2339 tmp = (u8 *)&data;
2340 prev_bytes = offset & 0x3;
2341 offset >>= 2;
2342
2343 if (prev_bytes) {
2344 data = E1000_READ_REG_ARRAY(hw, E1000_HOST_IF, offset);
2345 for (j = prev_bytes; j < sizeof(u32); j++) {
2346 *(tmp + j) = *bufptr++;
2347 *sum += *(tmp + j);
2348 }
2349 E1000_WRITE_REG_ARRAY(hw, E1000_HOST_IF, offset, data);
2350 length -= j - prev_bytes;
2351 offset++;
2352 }
2353
2354 remaining = length & 0x3;
2355 length -= remaining;
2356
2357 /* Calculate length in DWORDs */
2358 length >>= 2;
2359
2360 /* The device driver writes the relevant command block into the
2361 * ram area. */
2362 for (i = 0; i < length; i++) {
2363 for (j = 0; j < sizeof(u32); j++) {
2364 *(tmp + j) = *bufptr++;
2365 *sum += *(tmp + j);
2366 }
2367
2368 E1000_WRITE_REG_ARRAY(hw, E1000_HOST_IF, offset + i, data);
2369 }
2370 if (remaining) {
2371 for (j = 0; j < sizeof(u32); j++) {
2372 if (j < remaining)
2373 *(tmp + j) = *bufptr++;
2374 else
2375 *(tmp + j) = 0;
2376
2377 *sum += *(tmp + j);
2378 }
2379 E1000_WRITE_REG_ARRAY(hw, E1000_HOST_IF, offset + i, data);
2380 }
2381
2382 return 0;
2383}
2384
2385/**
2386 * e1000e_mng_write_dhcp_info - Writes DHCP info to host interface
2387 * @hw: pointer to the HW structure
2388 * @buffer: pointer to the host interface
2389 * @length: size of the buffer
2390 *
2391 * Writes the DHCP information to the host interface.
2392 **/
2393s32 e1000e_mng_write_dhcp_info(struct e1000_hw *hw, u8 *buffer, u16 length)
2394{
2395 struct e1000_host_mng_command_header hdr;
2396 s32 ret_val;
2397 u32 hicr;
2398
2399 hdr.command_id = E1000_MNG_DHCP_TX_PAYLOAD_CMD;
2400 hdr.command_length = length;
2401 hdr.reserved1 = 0;
2402 hdr.reserved2 = 0;
2403 hdr.checksum = 0;
2404
2405 /* Enable the host interface */
2406 ret_val = e1000_mng_enable_host_if(hw);
2407 if (ret_val)
2408 return ret_val;
2409
2410 /* Populate the host interface with the contents of "buffer". */
2411 ret_val = e1000_mng_host_if_write(hw, buffer, length,
2412 sizeof(hdr), &(hdr.checksum));
2413 if (ret_val)
2414 return ret_val;
2415
2416 /* Write the manageability command header */
2417 ret_val = e1000_mng_write_cmd_header(hw, &hdr);
2418 if (ret_val)
2419 return ret_val;
2420
2421 /* Tell the ARC a new command is pending. */
2422 hicr = er32(HICR);
2423 ew32(HICR, hicr | E1000_HICR_C);
2424
2425 return 0;
2426}
2427
2428/**
2429 * e1000e_enable_mng_pass_thru - Enable processing of ARP's
2430 * @hw: pointer to the HW structure
2431 *
2432 * Verifies the hardware needs to allow ARPs to be processed by the host.
2433 **/
2434bool e1000e_enable_mng_pass_thru(struct e1000_hw *hw)
2435{
2436 u32 manc;
2437 u32 fwsm, factps;
2438 bool ret_val = 0;
2439
2440 manc = er32(MANC);
2441
2442 if (!(manc & E1000_MANC_RCV_TCO_EN) ||
2443 !(manc & E1000_MANC_EN_MAC_ADDR_FILTER))
2444 return ret_val;
2445
2446 if (hw->mac.arc_subsystem_valid) {
2447 fwsm = er32(FWSM);
2448 factps = er32(FACTPS);
2449
2450 if (!(factps & E1000_FACTPS_MNGCG) &&
2451 ((fwsm & E1000_FWSM_MODE_MASK) ==
2452 (e1000_mng_mode_pt << E1000_FWSM_MODE_SHIFT))) {
2453 ret_val = 1;
2454 return ret_val;
2455 }
2456 } else {
2457 if ((manc & E1000_MANC_SMBUS_EN) &&
2458 !(manc & E1000_MANC_ASF_EN)) {
2459 ret_val = 1;
2460 return ret_val;
2461 }
2462 }
2463
2464 return ret_val;
2465}
2466
2467s32 e1000e_read_part_num(struct e1000_hw *hw, u32 *part_num)
2468{
2469 s32 ret_val;
2470 u16 nvm_data;
2471
2472 ret_val = e1000_read_nvm(hw, NVM_PBA_OFFSET_0, 1, &nvm_data);
2473 if (ret_val) {
2474 hw_dbg(hw, "NVM Read Error\n");
2475 return ret_val;
2476 }
2477 *part_num = (u32)(nvm_data << 16);
2478
2479 ret_val = e1000_read_nvm(hw, NVM_PBA_OFFSET_1, 1, &nvm_data);
2480 if (ret_val) {
2481 hw_dbg(hw, "NVM Read Error\n");
2482 return ret_val;
2483 }
2484 *part_num |= nvm_data;
2485
2486 return 0;
2487}
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
new file mode 100644
index 000000000000..eeb40ccbcb22
--- /dev/null
+++ b/drivers/net/e1000e/netdev.c
@@ -0,0 +1,4441 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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#include <linux/module.h>
30#include <linux/types.h>
31#include <linux/init.h>
32#include <linux/pci.h>
33#include <linux/vmalloc.h>
34#include <linux/pagemap.h>
35#include <linux/delay.h>
36#include <linux/netdevice.h>
37#include <linux/tcp.h>
38#include <linux/ipv6.h>
39#include <net/checksum.h>
40#include <net/ip6_checksum.h>
41#include <linux/mii.h>
42#include <linux/ethtool.h>
43#include <linux/if_vlan.h>
44#include <linux/cpu.h>
45#include <linux/smp.h>
46
47#include "e1000.h"
48
49#define DRV_VERSION "0.2.0"
50char e1000e_driver_name[] = "e1000e";
51const char e1000e_driver_version[] = DRV_VERSION;
52
53static const struct e1000_info *e1000_info_tbl[] = {
54 [board_82571] = &e1000_82571_info,
55 [board_82572] = &e1000_82572_info,
56 [board_82573] = &e1000_82573_info,
57 [board_80003es2lan] = &e1000_es2_info,
58 [board_ich8lan] = &e1000_ich8_info,
59 [board_ich9lan] = &e1000_ich9_info,
60};
61
62#ifdef DEBUG
63/**
64 * e1000_get_hw_dev_name - return device name string
65 * used by hardware layer to print debugging information
66 **/
67char *e1000e_get_hw_dev_name(struct e1000_hw *hw)
68{
69 struct e1000_adapter *adapter = hw->back;
70 struct net_device *netdev = adapter->netdev;
71 return netdev->name;
72}
73#endif
74
75/**
76 * e1000_desc_unused - calculate if we have unused descriptors
77 **/
78static int e1000_desc_unused(struct e1000_ring *ring)
79{
80 if (ring->next_to_clean > ring->next_to_use)
81 return ring->next_to_clean - ring->next_to_use - 1;
82
83 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
84}
85
86/**
87 * e1000_receive_skb - helper function to handle rx indications
88 * @adapter: board private structure
89 * @status: descriptor status field as written by hardware
90 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
91 * @skb: pointer to sk_buff to be indicated to stack
92 **/
93static void e1000_receive_skb(struct e1000_adapter *adapter,
94 struct net_device *netdev,
95 struct sk_buff *skb,
96 u8 status, u16 vlan)
97{
98 skb->protocol = eth_type_trans(skb, netdev);
99
100 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
101 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
102 le16_to_cpu(vlan) &
103 E1000_RXD_SPC_VLAN_MASK);
104 else
105 netif_receive_skb(skb);
106
107 netdev->last_rx = jiffies;
108}
109
110/**
111 * e1000_rx_checksum - Receive Checksum Offload for 82543
112 * @adapter: board private structure
113 * @status_err: receive descriptor status and error fields
114 * @csum: receive descriptor csum field
115 * @sk_buff: socket buffer with received data
116 **/
117static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
118 u32 csum, struct sk_buff *skb)
119{
120 u16 status = (u16)status_err;
121 u8 errors = (u8)(status_err >> 24);
122 skb->ip_summed = CHECKSUM_NONE;
123
124 /* Ignore Checksum bit is set */
125 if (status & E1000_RXD_STAT_IXSM)
126 return;
127 /* TCP/UDP checksum error bit is set */
128 if (errors & E1000_RXD_ERR_TCPE) {
129 /* let the stack verify checksum errors */
130 adapter->hw_csum_err++;
131 return;
132 }
133
134 /* TCP/UDP Checksum has not been calculated */
135 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
136 return;
137
138 /* It must be a TCP or UDP packet with a valid checksum */
139 if (status & E1000_RXD_STAT_TCPCS) {
140 /* TCP checksum is good */
141 skb->ip_summed = CHECKSUM_UNNECESSARY;
142 } else {
143 /* IP fragment with UDP payload */
144 /* Hardware complements the payload checksum, so we undo it
145 * and then put the value in host order for further stack use.
146 */
147 csum = ntohl(csum ^ 0xFFFF);
148 skb->csum = csum;
149 skb->ip_summed = CHECKSUM_COMPLETE;
150 }
151 adapter->hw_csum_good++;
152}
153
154/**
155 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
156 * @adapter: address of board private structure
157 **/
158static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
159 int cleaned_count)
160{
161 struct net_device *netdev = adapter->netdev;
162 struct pci_dev *pdev = adapter->pdev;
163 struct e1000_ring *rx_ring = adapter->rx_ring;
164 struct e1000_rx_desc *rx_desc;
165 struct e1000_buffer *buffer_info;
166 struct sk_buff *skb;
167 unsigned int i;
168 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
169
170 i = rx_ring->next_to_use;
171 buffer_info = &rx_ring->buffer_info[i];
172
173 while (cleaned_count--) {
174 skb = buffer_info->skb;
175 if (skb) {
176 skb_trim(skb, 0);
177 goto map_skb;
178 }
179
180 skb = netdev_alloc_skb(netdev, bufsz);
181 if (!skb) {
182 /* Better luck next round */
183 adapter->alloc_rx_buff_failed++;
184 break;
185 }
186
187 /* Make buffer alignment 2 beyond a 16 byte boundary
188 * this will result in a 16 byte aligned IP header after
189 * the 14 byte MAC header is removed
190 */
191 skb_reserve(skb, NET_IP_ALIGN);
192
193 buffer_info->skb = skb;
194map_skb:
195 buffer_info->dma = pci_map_single(pdev, skb->data,
196 adapter->rx_buffer_len,
197 PCI_DMA_FROMDEVICE);
198 if (pci_dma_mapping_error(buffer_info->dma)) {
199 dev_err(&pdev->dev, "RX DMA map failed\n");
200 adapter->rx_dma_failed++;
201 break;
202 }
203
204 rx_desc = E1000_RX_DESC(*rx_ring, i);
205 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
206
207 i++;
208 if (i == rx_ring->count)
209 i = 0;
210 buffer_info = &rx_ring->buffer_info[i];
211 }
212
213 if (rx_ring->next_to_use != i) {
214 rx_ring->next_to_use = i;
215 if (i-- == 0)
216 i = (rx_ring->count - 1);
217
218 /* Force memory writes to complete before letting h/w
219 * know there are new descriptors to fetch. (Only
220 * applicable for weak-ordered memory model archs,
221 * such as IA-64). */
222 wmb();
223 writel(i, adapter->hw.hw_addr + rx_ring->tail);
224 }
225}
226
227/**
228 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
229 * @adapter: address of board private structure
230 **/
231static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
232 int cleaned_count)
233{
234 struct net_device *netdev = adapter->netdev;
235 struct pci_dev *pdev = adapter->pdev;
236 union e1000_rx_desc_packet_split *rx_desc;
237 struct e1000_ring *rx_ring = adapter->rx_ring;
238 struct e1000_buffer *buffer_info;
239 struct e1000_ps_page *ps_page;
240 struct sk_buff *skb;
241 unsigned int i, j;
242
243 i = rx_ring->next_to_use;
244 buffer_info = &rx_ring->buffer_info[i];
245
246 while (cleaned_count--) {
247 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
248
249 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
250 ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS)
251 + j];
252 if (j < adapter->rx_ps_pages) {
253 if (!ps_page->page) {
254 ps_page->page = alloc_page(GFP_ATOMIC);
255 if (!ps_page->page) {
256 adapter->alloc_rx_buff_failed++;
257 goto no_buffers;
258 }
259 ps_page->dma = pci_map_page(pdev,
260 ps_page->page,
261 0, PAGE_SIZE,
262 PCI_DMA_FROMDEVICE);
263 if (pci_dma_mapping_error(
264 ps_page->dma)) {
265 dev_err(&adapter->pdev->dev,
266 "RX DMA page map failed\n");
267 adapter->rx_dma_failed++;
268 goto no_buffers;
269 }
270 }
271 /*
272 * Refresh the desc even if buffer_addrs
273 * didn't change because each write-back
274 * erases this info.
275 */
276 rx_desc->read.buffer_addr[j+1] =
277 cpu_to_le64(ps_page->dma);
278 } else {
279 rx_desc->read.buffer_addr[j+1] = ~0;
280 }
281 }
282
283 skb = netdev_alloc_skb(netdev,
284 adapter->rx_ps_bsize0 + NET_IP_ALIGN);
285
286 if (!skb) {
287 adapter->alloc_rx_buff_failed++;
288 break;
289 }
290
291 /* Make buffer alignment 2 beyond a 16 byte boundary
292 * this will result in a 16 byte aligned IP header after
293 * the 14 byte MAC header is removed
294 */
295 skb_reserve(skb, NET_IP_ALIGN);
296
297 buffer_info->skb = skb;
298 buffer_info->dma = pci_map_single(pdev, skb->data,
299 adapter->rx_ps_bsize0,
300 PCI_DMA_FROMDEVICE);
301 if (pci_dma_mapping_error(buffer_info->dma)) {
302 dev_err(&pdev->dev, "RX DMA map failed\n");
303 adapter->rx_dma_failed++;
304 /* cleanup skb */
305 dev_kfree_skb_any(skb);
306 buffer_info->skb = NULL;
307 break;
308 }
309
310 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
311
312 i++;
313 if (i == rx_ring->count)
314 i = 0;
315 buffer_info = &rx_ring->buffer_info[i];
316 }
317
318no_buffers:
319 if (rx_ring->next_to_use != i) {
320 rx_ring->next_to_use = i;
321
322 if (!(i--))
323 i = (rx_ring->count - 1);
324
325 /* Force memory writes to complete before letting h/w
326 * know there are new descriptors to fetch. (Only
327 * applicable for weak-ordered memory model archs,
328 * such as IA-64). */
329 wmb();
330 /* Hardware increments by 16 bytes, but packet split
331 * descriptors are 32 bytes...so we increment tail
332 * twice as much.
333 */
334 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
335 }
336}
337
338/**
339 * e1000_alloc_rx_buffers_jumbo - Replace used jumbo receive buffers
340 *
341 * @adapter: address of board private structure
342 * @cleaned_count: number of buffers to allocate this pass
343 **/
344static void e1000_alloc_rx_buffers_jumbo(struct e1000_adapter *adapter,
345 int cleaned_count)
346{
347 struct net_device *netdev = adapter->netdev;
348 struct pci_dev *pdev = adapter->pdev;
349 struct e1000_ring *rx_ring = adapter->rx_ring;
350 struct e1000_rx_desc *rx_desc;
351 struct e1000_buffer *buffer_info;
352 struct sk_buff *skb;
353 unsigned int i;
354 unsigned int bufsz = 256 -
355 16 /*for skb_reserve */ -
356 NET_IP_ALIGN;
357
358 i = rx_ring->next_to_use;
359 buffer_info = &rx_ring->buffer_info[i];
360
361 while (cleaned_count--) {
362 skb = buffer_info->skb;
363 if (skb) {
364 skb_trim(skb, 0);
365 goto check_page;
366 }
367
368 skb = netdev_alloc_skb(netdev, bufsz);
369 if (!skb) {
370 /* Better luck next round */
371 adapter->alloc_rx_buff_failed++;
372 break;
373 }
374
375 /* Make buffer alignment 2 beyond a 16 byte boundary
376 * this will result in a 16 byte aligned IP header after
377 * the 14 byte MAC header is removed
378 */
379 skb_reserve(skb, NET_IP_ALIGN);
380
381 buffer_info->skb = skb;
382check_page:
383 /* allocate a new page if necessary */
384 if (!buffer_info->page) {
385 buffer_info->page = alloc_page(GFP_ATOMIC);
386 if (!buffer_info->page) {
387 adapter->alloc_rx_buff_failed++;
388 break;
389 }
390 }
391
392 if (!buffer_info->dma)
393 buffer_info->dma = pci_map_page(pdev,
394 buffer_info->page, 0,
395 PAGE_SIZE,
396 PCI_DMA_FROMDEVICE);
397 if (pci_dma_mapping_error(buffer_info->dma)) {
398 dev_err(&adapter->pdev->dev, "RX DMA page map failed\n");
399 adapter->rx_dma_failed++;
400 break;
401 }
402
403 rx_desc = E1000_RX_DESC(*rx_ring, i);
404 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
405
406 i++;
407 if (i == rx_ring->count)
408 i = 0;
409 buffer_info = &rx_ring->buffer_info[i];
410 }
411
412 if (rx_ring->next_to_use != i) {
413 rx_ring->next_to_use = i;
414 if (i-- == 0)
415 i = (rx_ring->count - 1);
416
417 /* Force memory writes to complete before letting h/w
418 * know there are new descriptors to fetch. (Only
419 * applicable for weak-ordered memory model archs,
420 * such as IA-64). */
421 wmb();
422 writel(i, adapter->hw.hw_addr + rx_ring->tail);
423 }
424}
425
426/**
427 * e1000_clean_rx_irq - Send received data up the network stack; legacy
428 * @adapter: board private structure
429 *
430 * the return value indicates whether actual cleaning was done, there
431 * is no guarantee that everything was cleaned
432 **/
433static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
434 int *work_done, int work_to_do)
435{
436 struct net_device *netdev = adapter->netdev;
437 struct pci_dev *pdev = adapter->pdev;
438 struct e1000_ring *rx_ring = adapter->rx_ring;
439 struct e1000_rx_desc *rx_desc, *next_rxd;
440 struct e1000_buffer *buffer_info, *next_buffer;
441 u32 length;
442 unsigned int i;
443 int cleaned_count = 0;
444 bool cleaned = 0;
445 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
446
447 i = rx_ring->next_to_clean;
448 rx_desc = E1000_RX_DESC(*rx_ring, i);
449 buffer_info = &rx_ring->buffer_info[i];
450
451 while (rx_desc->status & E1000_RXD_STAT_DD) {
452 struct sk_buff *skb;
453 u8 status;
454
455 if (*work_done >= work_to_do)
456 break;
457 (*work_done)++;
458
459 status = rx_desc->status;
460 skb = buffer_info->skb;
461 buffer_info->skb = NULL;
462
463 prefetch(skb->data - NET_IP_ALIGN);
464
465 i++;
466 if (i == rx_ring->count)
467 i = 0;
468 next_rxd = E1000_RX_DESC(*rx_ring, i);
469 prefetch(next_rxd);
470
471 next_buffer = &rx_ring->buffer_info[i];
472
473 cleaned = 1;
474 cleaned_count++;
475 pci_unmap_single(pdev,
476 buffer_info->dma,
477 adapter->rx_buffer_len,
478 PCI_DMA_FROMDEVICE);
479 buffer_info->dma = 0;
480
481 length = le16_to_cpu(rx_desc->length);
482
483 /* !EOP means multiple descriptors were used to store a single
484 * packet, also make sure the frame isn't just CRC only */
485 if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) {
486 /* All receives must fit into a single buffer */
487 ndev_dbg(netdev, "%s: Receive packet consumed "
488 "multiple buffers\n", netdev->name);
489 /* recycle */
490 buffer_info->skb = skb;
491 goto next_desc;
492 }
493
494 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
495 /* recycle */
496 buffer_info->skb = skb;
497 goto next_desc;
498 }
499
500 /* adjust length to remove Ethernet CRC */
501 length -= 4;
502
503 /* probably a little skewed due to removing CRC */
504 total_rx_bytes += length;
505 total_rx_packets++;
506
507 /* code added for copybreak, this should improve
508 * performance for small packets with large amounts
509 * of reassembly being done in the stack */
510 if (length < copybreak) {
511 struct sk_buff *new_skb =
512 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
513 if (new_skb) {
514 skb_reserve(new_skb, NET_IP_ALIGN);
515 memcpy(new_skb->data - NET_IP_ALIGN,
516 skb->data - NET_IP_ALIGN,
517 length + NET_IP_ALIGN);
518 /* save the skb in buffer_info as good */
519 buffer_info->skb = skb;
520 skb = new_skb;
521 }
522 /* else just continue with the old one */
523 }
524 /* end copybreak code */
525 skb_put(skb, length);
526
527 /* Receive Checksum Offload */
528 e1000_rx_checksum(adapter,
529 (u32)(status) |
530 ((u32)(rx_desc->errors) << 24),
531 le16_to_cpu(rx_desc->csum), skb);
532
533 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
534
535next_desc:
536 rx_desc->status = 0;
537
538 /* return some buffers to hardware, one at a time is too slow */
539 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
540 adapter->alloc_rx_buf(adapter, cleaned_count);
541 cleaned_count = 0;
542 }
543
544 /* use prefetched values */
545 rx_desc = next_rxd;
546 buffer_info = next_buffer;
547 }
548 rx_ring->next_to_clean = i;
549
550 cleaned_count = e1000_desc_unused(rx_ring);
551 if (cleaned_count)
552 adapter->alloc_rx_buf(adapter, cleaned_count);
553
554 adapter->total_rx_packets += total_rx_packets;
555 adapter->total_rx_bytes += total_rx_bytes;
556 return cleaned;
557}
558
559static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
560 u16 length)
561{
562 bi->page = NULL;
563 skb->len += length;
564 skb->data_len += length;
565 skb->truesize += length;
566}
567
568static void e1000_put_txbuf(struct e1000_adapter *adapter,
569 struct e1000_buffer *buffer_info)
570{
571 if (buffer_info->dma) {
572 pci_unmap_page(adapter->pdev, buffer_info->dma,
573 buffer_info->length, PCI_DMA_TODEVICE);
574 buffer_info->dma = 0;
575 }
576 if (buffer_info->skb) {
577 dev_kfree_skb_any(buffer_info->skb);
578 buffer_info->skb = NULL;
579 }
580}
581
582static void e1000_print_tx_hang(struct e1000_adapter *adapter)
583{
584 struct e1000_ring *tx_ring = adapter->tx_ring;
585 unsigned int i = tx_ring->next_to_clean;
586 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
587 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
588 struct net_device *netdev = adapter->netdev;
589
590 /* detected Tx unit hang */
591 ndev_err(netdev,
592 "Detected Tx Unit Hang:\n"
593 " TDH <%x>\n"
594 " TDT <%x>\n"
595 " next_to_use <%x>\n"
596 " next_to_clean <%x>\n"
597 "buffer_info[next_to_clean]:\n"
598 " time_stamp <%lx>\n"
599 " next_to_watch <%x>\n"
600 " jiffies <%lx>\n"
601 " next_to_watch.status <%x>\n",
602 readl(adapter->hw.hw_addr + tx_ring->head),
603 readl(adapter->hw.hw_addr + tx_ring->tail),
604 tx_ring->next_to_use,
605 tx_ring->next_to_clean,
606 tx_ring->buffer_info[eop].time_stamp,
607 eop,
608 jiffies,
609 eop_desc->upper.fields.status);
610}
611
612/**
613 * e1000_clean_tx_irq - Reclaim resources after transmit completes
614 * @adapter: board private structure
615 *
616 * the return value indicates whether actual cleaning was done, there
617 * is no guarantee that everything was cleaned
618 **/
619static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
620{
621 struct net_device *netdev = adapter->netdev;
622 struct e1000_hw *hw = &adapter->hw;
623 struct e1000_ring *tx_ring = adapter->tx_ring;
624 struct e1000_tx_desc *tx_desc, *eop_desc;
625 struct e1000_buffer *buffer_info;
626 unsigned int i, eop;
627 unsigned int count = 0;
628 bool cleaned = 0;
629 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
630
631 i = tx_ring->next_to_clean;
632 eop = tx_ring->buffer_info[i].next_to_watch;
633 eop_desc = E1000_TX_DESC(*tx_ring, eop);
634
635 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
636 for (cleaned = 0; !cleaned; ) {
637 tx_desc = E1000_TX_DESC(*tx_ring, i);
638 buffer_info = &tx_ring->buffer_info[i];
639 cleaned = (i == eop);
640
641 if (cleaned) {
642 struct sk_buff *skb = buffer_info->skb;
643 unsigned int segs, bytecount;
644 segs = skb_shinfo(skb)->gso_segs ?: 1;
645 /* multiply data chunks by size of headers */
646 bytecount = ((segs - 1) * skb_headlen(skb)) +
647 skb->len;
648 total_tx_packets += segs;
649 total_tx_bytes += bytecount;
650 }
651
652 e1000_put_txbuf(adapter, buffer_info);
653 tx_desc->upper.data = 0;
654
655 i++;
656 if (i == tx_ring->count)
657 i = 0;
658 }
659
660 eop = tx_ring->buffer_info[i].next_to_watch;
661 eop_desc = E1000_TX_DESC(*tx_ring, eop);
662#define E1000_TX_WEIGHT 64
663 /* weight of a sort for tx, to avoid endless transmit cleanup */
664 if (count++ == E1000_TX_WEIGHT)
665 break;
666 }
667
668 tx_ring->next_to_clean = i;
669
670#define TX_WAKE_THRESHOLD 32
671 if (cleaned && netif_carrier_ok(netdev) &&
672 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
673 /* Make sure that anybody stopping the queue after this
674 * sees the new next_to_clean.
675 */
676 smp_mb();
677
678 if (netif_queue_stopped(netdev) &&
679 !(test_bit(__E1000_DOWN, &adapter->state))) {
680 netif_wake_queue(netdev);
681 ++adapter->restart_queue;
682 }
683 }
684
685 if (adapter->detect_tx_hung) {
686 /* Detect a transmit hang in hardware, this serializes the
687 * check with the clearing of time_stamp and movement of i */
688 adapter->detect_tx_hung = 0;
689 if (tx_ring->buffer_info[eop].dma &&
690 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp
691 + (adapter->tx_timeout_factor * HZ))
692 && !(er32(STATUS) &
693 E1000_STATUS_TXOFF)) {
694 e1000_print_tx_hang(adapter);
695 netif_stop_queue(netdev);
696 }
697 }
698 adapter->total_tx_bytes += total_tx_bytes;
699 adapter->total_tx_packets += total_tx_packets;
700 return cleaned;
701}
702
703/**
704 * e1000_clean_rx_irq_jumbo - Send received data up the network stack; legacy
705 * @adapter: board private structure
706 *
707 * the return value indicates whether actual cleaning was done, there
708 * is no guarantee that everything was cleaned
709 **/
710static bool e1000_clean_rx_irq_jumbo(struct e1000_adapter *adapter,
711 int *work_done, int work_to_do)
712{
713 struct net_device *netdev = adapter->netdev;
714 struct pci_dev *pdev = adapter->pdev;
715 struct e1000_ring *rx_ring = adapter->rx_ring;
716 struct e1000_rx_desc *rx_desc, *next_rxd;
717 struct e1000_buffer *buffer_info, *next_buffer;
718 u32 length;
719 unsigned int i;
720 int cleaned_count = 0;
721 bool cleaned = 0;
722 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
723
724 i = rx_ring->next_to_clean;
725 rx_desc = E1000_RX_DESC(*rx_ring, i);
726 buffer_info = &rx_ring->buffer_info[i];
727
728 while (rx_desc->status & E1000_RXD_STAT_DD) {
729 struct sk_buff *skb;
730 u8 status;
731
732 if (*work_done >= work_to_do)
733 break;
734 (*work_done)++;
735
736 status = rx_desc->status;
737 skb = buffer_info->skb;
738 buffer_info->skb = NULL;
739
740 i++;
741 if (i == rx_ring->count)
742 i = 0;
743 next_rxd = E1000_RX_DESC(*rx_ring, i);
744 prefetch(next_rxd);
745
746 next_buffer = &rx_ring->buffer_info[i];
747
748 cleaned = 1;
749 cleaned_count++;
750 pci_unmap_page(pdev,
751 buffer_info->dma,
752 PAGE_SIZE,
753 PCI_DMA_FROMDEVICE);
754 buffer_info->dma = 0;
755
756 length = le16_to_cpu(rx_desc->length);
757
758 /* errors is only valid for DD + EOP descriptors */
759 if ((status & E1000_RXD_STAT_EOP) &&
760 (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
761 /* recycle both page and skb */
762 buffer_info->skb = skb;
763 /* an error means any chain goes out the window too */
764 if (rx_ring->rx_skb_top)
765 dev_kfree_skb(rx_ring->rx_skb_top);
766 rx_ring->rx_skb_top = NULL;
767 goto next_desc;
768 }
769
770#define rxtop rx_ring->rx_skb_top
771 if (!(status & E1000_RXD_STAT_EOP)) {
772 /* this descriptor is only the beginning (or middle) */
773 if (!rxtop) {
774 /* this is the beginning of a chain */
775 rxtop = skb;
776 skb_fill_page_desc(rxtop, 0, buffer_info->page,
777 0, length);
778 } else {
779 /* this is the middle of a chain */
780 skb_fill_page_desc(rxtop,
781 skb_shinfo(rxtop)->nr_frags,
782 buffer_info->page, 0,
783 length);
784 /* re-use the skb, only consumed the page */
785 buffer_info->skb = skb;
786 }
787 e1000_consume_page(buffer_info, rxtop, length);
788 goto next_desc;
789 } else {
790 if (rxtop) {
791 /* end of the chain */
792 skb_fill_page_desc(rxtop,
793 skb_shinfo(rxtop)->nr_frags,
794 buffer_info->page, 0, length);
795 /* re-use the current skb, we only consumed the
796 * page */
797 buffer_info->skb = skb;
798 skb = rxtop;
799 rxtop = NULL;
800 e1000_consume_page(buffer_info, skb, length);
801 } else {
802 /* no chain, got EOP, this buf is the packet
803 * copybreak to save the put_page/alloc_page */
804 if (length <= copybreak &&
805 skb_tailroom(skb) >= length) {
806 u8 *vaddr;
807 vaddr = kmap_atomic(buffer_info->page,
808 KM_SKB_DATA_SOFTIRQ);
809 memcpy(skb_tail_pointer(skb),
810 vaddr, length);
811 kunmap_atomic(vaddr,
812 KM_SKB_DATA_SOFTIRQ);
813 /* re-use the page, so don't erase
814 * buffer_info->page */
815 skb_put(skb, length);
816 } else {
817 skb_fill_page_desc(skb, 0,
818 buffer_info->page, 0,
819 length);
820 e1000_consume_page(buffer_info, skb,
821 length);
822 }
823 }
824 }
825
826 /* Receive Checksum Offload XXX recompute due to CRC strip? */
827 e1000_rx_checksum(adapter,
828 (u32)(status) |
829 ((u32)(rx_desc->errors) << 24),
830 le16_to_cpu(rx_desc->csum), skb);
831
832 pskb_trim(skb, skb->len - 4);
833
834 /* probably a little skewed due to removing CRC */
835 total_rx_bytes += skb->len;
836 total_rx_packets++;
837
838 /* eth type trans needs skb->data to point to something */
839 if (!pskb_may_pull(skb, ETH_HLEN)) {
840 ndev_err(netdev, "__pskb_pull_tail failed.\n");
841 dev_kfree_skb(skb);
842 goto next_desc;
843 }
844
845 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
846
847next_desc:
848 rx_desc->status = 0;
849
850 /* return some buffers to hardware, one at a time is too slow */
851 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
852 adapter->alloc_rx_buf(adapter, cleaned_count);
853 cleaned_count = 0;
854 }
855
856 /* use prefetched values */
857 rx_desc = next_rxd;
858 buffer_info = next_buffer;
859 }
860 rx_ring->next_to_clean = i;
861
862 cleaned_count = e1000_desc_unused(rx_ring);
863 if (cleaned_count)
864 adapter->alloc_rx_buf(adapter, cleaned_count);
865
866 adapter->total_rx_packets += total_rx_packets;
867 adapter->total_rx_bytes += total_rx_bytes;
868 return cleaned;
869}
870
871/**
872 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
873 * @adapter: board private structure
874 *
875 * the return value indicates whether actual cleaning was done, there
876 * is no guarantee that everything was cleaned
877 **/
878static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
879 int *work_done, int work_to_do)
880{
881 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
882 struct net_device *netdev = adapter->netdev;
883 struct pci_dev *pdev = adapter->pdev;
884 struct e1000_ring *rx_ring = adapter->rx_ring;
885 struct e1000_buffer *buffer_info, *next_buffer;
886 struct e1000_ps_page *ps_page;
887 struct sk_buff *skb;
888 unsigned int i, j;
889 u32 length, staterr;
890 int cleaned_count = 0;
891 bool cleaned = 0;
892 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
893
894 i = rx_ring->next_to_clean;
895 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
896 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
897 buffer_info = &rx_ring->buffer_info[i];
898
899 while (staterr & E1000_RXD_STAT_DD) {
900 if (*work_done >= work_to_do)
901 break;
902 (*work_done)++;
903 skb = buffer_info->skb;
904
905 /* in the packet split case this is header only */
906 prefetch(skb->data - NET_IP_ALIGN);
907
908 i++;
909 if (i == rx_ring->count)
910 i = 0;
911 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
912 prefetch(next_rxd);
913
914 next_buffer = &rx_ring->buffer_info[i];
915
916 cleaned = 1;
917 cleaned_count++;
918 pci_unmap_single(pdev, buffer_info->dma,
919 adapter->rx_ps_bsize0,
920 PCI_DMA_FROMDEVICE);
921 buffer_info->dma = 0;
922
923 if (!(staterr & E1000_RXD_STAT_EOP)) {
924 ndev_dbg(netdev, "%s: Packet Split buffers didn't pick "
925 "up the full packet\n", netdev->name);
926 dev_kfree_skb_irq(skb);
927 goto next_desc;
928 }
929
930 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
931 dev_kfree_skb_irq(skb);
932 goto next_desc;
933 }
934
935 length = le16_to_cpu(rx_desc->wb.middle.length0);
936
937 if (!length) {
938 ndev_dbg(netdev, "%s: Last part of the packet spanning"
939 " multiple descriptors\n", netdev->name);
940 dev_kfree_skb_irq(skb);
941 goto next_desc;
942 }
943
944 /* Good Receive */
945 skb_put(skb, length);
946
947 {
948 /* this looks ugly, but it seems compiler issues make it
949 more efficient than reusing j */
950 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
951
952 /* page alloc/put takes too long and effects small packet
953 * throughput, so unsplit small packets and save the alloc/put*/
954 if (l1 && (l1 <= copybreak) &&
955 ((length + l1) <= adapter->rx_ps_bsize0)) {
956 u8 *vaddr;
957
958 ps_page = &rx_ring->ps_pages[i * PS_PAGE_BUFFERS];
959
960 /* there is no documentation about how to call
961 * kmap_atomic, so we can't hold the mapping
962 * very long */
963 pci_dma_sync_single_for_cpu(pdev, ps_page->dma,
964 PAGE_SIZE, PCI_DMA_FROMDEVICE);
965 vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
966 memcpy(skb_tail_pointer(skb), vaddr, l1);
967 kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
968 pci_dma_sync_single_for_device(pdev, ps_page->dma,
969 PAGE_SIZE, PCI_DMA_FROMDEVICE);
970 /* remove the CRC */
971 l1 -= 4;
972 skb_put(skb, l1);
973 goto copydone;
974 } /* if */
975 }
976
977 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
978 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
979 if (!length)
980 break;
981
982 ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) + j];
983 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
984 PCI_DMA_FROMDEVICE);
985 ps_page->dma = 0;
986 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
987 ps_page->page = NULL;
988 skb->len += length;
989 skb->data_len += length;
990 skb->truesize += length;
991 }
992
993 /* strip the ethernet crc, problem is we're using pages now so
994 * this whole operation can get a little cpu intensive */
995 pskb_trim(skb, skb->len - 4);
996
997copydone:
998 total_rx_bytes += skb->len;
999 total_rx_packets++;
1000
1001 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
1002 rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
1003
1004 if (rx_desc->wb.upper.header_status &
1005 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1006 adapter->rx_hdr_split++;
1007
1008 e1000_receive_skb(adapter, netdev, skb,
1009 staterr, rx_desc->wb.middle.vlan);
1010
1011next_desc:
1012 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1013 buffer_info->skb = NULL;
1014
1015 /* return some buffers to hardware, one at a time is too slow */
1016 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1017 adapter->alloc_rx_buf(adapter, cleaned_count);
1018 cleaned_count = 0;
1019 }
1020
1021 /* use prefetched values */
1022 rx_desc = next_rxd;
1023 buffer_info = next_buffer;
1024
1025 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1026 }
1027 rx_ring->next_to_clean = i;
1028
1029 cleaned_count = e1000_desc_unused(rx_ring);
1030 if (cleaned_count)
1031 adapter->alloc_rx_buf(adapter, cleaned_count);
1032
1033 adapter->total_rx_packets += total_rx_packets;
1034 adapter->total_rx_bytes += total_rx_bytes;
1035 return cleaned;
1036}
1037
1038/**
1039 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1040 * @adapter: board private structure
1041 **/
1042static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
1043{
1044 struct e1000_ring *rx_ring = adapter->rx_ring;
1045 struct e1000_buffer *buffer_info;
1046 struct e1000_ps_page *ps_page;
1047 struct pci_dev *pdev = adapter->pdev;
1048 unsigned long size;
1049 unsigned int i, j;
1050
1051 /* Free all the Rx ring sk_buffs */
1052 for (i = 0; i < rx_ring->count; i++) {
1053 buffer_info = &rx_ring->buffer_info[i];
1054 if (buffer_info->dma) {
1055 if (adapter->clean_rx == e1000_clean_rx_irq)
1056 pci_unmap_single(pdev, buffer_info->dma,
1057 adapter->rx_buffer_len,
1058 PCI_DMA_FROMDEVICE);
1059 else if (adapter->clean_rx == e1000_clean_rx_irq_jumbo)
1060 pci_unmap_page(pdev, buffer_info->dma,
1061 PAGE_SIZE, PCI_DMA_FROMDEVICE);
1062 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1063 pci_unmap_single(pdev, buffer_info->dma,
1064 adapter->rx_ps_bsize0,
1065 PCI_DMA_FROMDEVICE);
1066 buffer_info->dma = 0;
1067 }
1068
1069 if (buffer_info->page) {
1070 put_page(buffer_info->page);
1071 buffer_info->page = NULL;
1072 }
1073
1074 if (buffer_info->skb) {
1075 dev_kfree_skb(buffer_info->skb);
1076 buffer_info->skb = NULL;
1077 }
1078
1079 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1080 ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS)
1081 + j];
1082 if (!ps_page->page)
1083 break;
1084 pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
1085 PCI_DMA_FROMDEVICE);
1086 ps_page->dma = 0;
1087 put_page(ps_page->page);
1088 ps_page->page = NULL;
1089 }
1090 }
1091
1092 /* there also may be some cached data from a chained receive */
1093 if (rx_ring->rx_skb_top) {
1094 dev_kfree_skb(rx_ring->rx_skb_top);
1095 rx_ring->rx_skb_top = NULL;
1096 }
1097
1098 size = sizeof(struct e1000_buffer) * rx_ring->count;
1099 memset(rx_ring->buffer_info, 0, size);
1100 size = sizeof(struct e1000_ps_page)
1101 * (rx_ring->count * PS_PAGE_BUFFERS);
1102 memset(rx_ring->ps_pages, 0, size);
1103
1104 /* Zero out the descriptor ring */
1105 memset(rx_ring->desc, 0, rx_ring->size);
1106
1107 rx_ring->next_to_clean = 0;
1108 rx_ring->next_to_use = 0;
1109
1110 writel(0, adapter->hw.hw_addr + rx_ring->head);
1111 writel(0, adapter->hw.hw_addr + rx_ring->tail);
1112}
1113
1114/**
1115 * e1000_intr_msi - Interrupt Handler
1116 * @irq: interrupt number
1117 * @data: pointer to a network interface device structure
1118 **/
1119static irqreturn_t e1000_intr_msi(int irq, void *data)
1120{
1121 struct net_device *netdev = data;
1122 struct e1000_adapter *adapter = netdev_priv(netdev);
1123 struct e1000_hw *hw = &adapter->hw;
1124 u32 icr = er32(ICR);
1125
1126 /* read ICR disables interrupts using IAM, so keep up with our
1127 * enable/disable accounting */
1128 atomic_inc(&adapter->irq_sem);
1129
1130 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1131 hw->mac.get_link_status = 1;
1132 /* ICH8 workaround-- Call gig speed drop workaround on cable
1133 * disconnect (LSC) before accessing any PHY registers */
1134 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1135 (!(er32(STATUS) & E1000_STATUS_LU)))
1136 e1000e_gig_downshift_workaround_ich8lan(hw);
1137
1138 /* 80003ES2LAN workaround-- For packet buffer work-around on
1139 * link down event; disable receives here in the ISR and reset
1140 * adapter in watchdog */
1141 if (netif_carrier_ok(netdev) &&
1142 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1143 /* disable receives */
1144 u32 rctl = er32(RCTL);
1145 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1146 }
1147 /* guard against interrupt when we're going down */
1148 if (!test_bit(__E1000_DOWN, &adapter->state))
1149 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1150 }
1151
1152 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1153 adapter->total_tx_bytes = 0;
1154 adapter->total_tx_packets = 0;
1155 adapter->total_rx_bytes = 0;
1156 adapter->total_rx_packets = 0;
1157 __netif_rx_schedule(netdev, &adapter->napi);
1158 } else {
1159 atomic_dec(&adapter->irq_sem);
1160 }
1161
1162 return IRQ_HANDLED;
1163}
1164
1165/**
1166 * e1000_intr - Interrupt Handler
1167 * @irq: interrupt number
1168 * @data: pointer to a network interface device structure
1169 **/
1170static irqreturn_t e1000_intr(int irq, void *data)
1171{
1172 struct net_device *netdev = data;
1173 struct e1000_adapter *adapter = netdev_priv(netdev);
1174 struct e1000_hw *hw = &adapter->hw;
1175
1176 u32 rctl, icr = er32(ICR);
1177 if (!icr)
1178 return IRQ_NONE; /* Not our interrupt */
1179
1180 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1181 * not set, then the adapter didn't send an interrupt */
1182 if (!(icr & E1000_ICR_INT_ASSERTED))
1183 return IRQ_NONE;
1184
1185 /* Interrupt Auto-Mask...upon reading ICR,
1186 * interrupts are masked. No need for the
1187 * IMC write, but it does mean we should
1188 * account for it ASAP. */
1189 atomic_inc(&adapter->irq_sem);
1190
1191 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
1192 hw->mac.get_link_status = 1;
1193 /* ICH8 workaround-- Call gig speed drop workaround on cable
1194 * disconnect (LSC) before accessing any PHY registers */
1195 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1196 (!(er32(STATUS) & E1000_STATUS_LU)))
1197 e1000e_gig_downshift_workaround_ich8lan(hw);
1198
1199 /* 80003ES2LAN workaround--
1200 * For packet buffer work-around on link down event;
1201 * disable receives here in the ISR and
1202 * reset adapter in watchdog
1203 */
1204 if (netif_carrier_ok(netdev) &&
1205 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1206 /* disable receives */
1207 rctl = er32(RCTL);
1208 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1209 }
1210 /* guard against interrupt when we're going down */
1211 if (!test_bit(__E1000_DOWN, &adapter->state))
1212 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1213 }
1214
1215 if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
1216 adapter->total_tx_bytes = 0;
1217 adapter->total_tx_packets = 0;
1218 adapter->total_rx_bytes = 0;
1219 adapter->total_rx_packets = 0;
1220 __netif_rx_schedule(netdev, &adapter->napi);
1221 } else {
1222 atomic_dec(&adapter->irq_sem);
1223 }
1224
1225 return IRQ_HANDLED;
1226}
1227
1228static int e1000_request_irq(struct e1000_adapter *adapter)
1229{
1230 struct net_device *netdev = adapter->netdev;
1231 void (*handler) = &e1000_intr;
1232 int irq_flags = IRQF_SHARED;
1233 int err;
1234
1235 err = pci_enable_msi(adapter->pdev);
1236 if (err) {
1237 ndev_warn(netdev,
1238 "Unable to allocate MSI interrupt Error: %d\n", err);
1239 } else {
1240 adapter->flags |= FLAG_MSI_ENABLED;
1241 handler = &e1000_intr_msi;
1242 irq_flags = 0;
1243 }
1244
1245 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
1246 netdev);
1247 if (err) {
1248 if (adapter->flags & FLAG_MSI_ENABLED)
1249 pci_disable_msi(adapter->pdev);
1250 ndev_err(netdev,
1251 "Unable to allocate interrupt Error: %d\n", err);
1252 }
1253
1254 return err;
1255}
1256
1257static void e1000_free_irq(struct e1000_adapter *adapter)
1258{
1259 struct net_device *netdev = adapter->netdev;
1260
1261 free_irq(adapter->pdev->irq, netdev);
1262 if (adapter->flags & FLAG_MSI_ENABLED) {
1263 pci_disable_msi(adapter->pdev);
1264 adapter->flags &= ~FLAG_MSI_ENABLED;
1265 }
1266}
1267
1268/**
1269 * e1000_irq_disable - Mask off interrupt generation on the NIC
1270 **/
1271static void e1000_irq_disable(struct e1000_adapter *adapter)
1272{
1273 struct e1000_hw *hw = &adapter->hw;
1274
1275 atomic_inc(&adapter->irq_sem);
1276 ew32(IMC, ~0);
1277 e1e_flush();
1278 synchronize_irq(adapter->pdev->irq);
1279}
1280
1281/**
1282 * e1000_irq_enable - Enable default interrupt generation settings
1283 **/
1284static void e1000_irq_enable(struct e1000_adapter *adapter)
1285{
1286 struct e1000_hw *hw = &adapter->hw;
1287
1288 if (atomic_dec_and_test(&adapter->irq_sem)) {
1289 ew32(IMS, IMS_ENABLE_MASK);
1290 e1e_flush();
1291 }
1292}
1293
1294/**
1295 * e1000_get_hw_control - get control of the h/w from f/w
1296 * @adapter: address of board private structure
1297 *
1298 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1299 * For ASF and Pass Through versions of f/w this means that
1300 * the driver is loaded. For AMT version (only with 82573)
1301 * of the f/w this means that the network i/f is open.
1302 **/
1303static void e1000_get_hw_control(struct e1000_adapter *adapter)
1304{
1305 struct e1000_hw *hw = &adapter->hw;
1306 u32 ctrl_ext;
1307 u32 swsm;
1308
1309 /* Let firmware know the driver has taken over */
1310 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1311 swsm = er32(SWSM);
1312 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1313 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1314 ctrl_ext = er32(CTRL_EXT);
1315 ew32(CTRL_EXT,
1316 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1317 }
1318}
1319
1320/**
1321 * e1000_release_hw_control - release control of the h/w to f/w
1322 * @adapter: address of board private structure
1323 *
1324 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1325 * For ASF and Pass Through versions of f/w this means that the
1326 * driver is no longer loaded. For AMT version (only with 82573) i
1327 * of the f/w this means that the network i/f is closed.
1328 *
1329 **/
1330static void e1000_release_hw_control(struct e1000_adapter *adapter)
1331{
1332 struct e1000_hw *hw = &adapter->hw;
1333 u32 ctrl_ext;
1334 u32 swsm;
1335
1336 /* Let firmware taken over control of h/w */
1337 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1338 swsm = er32(SWSM);
1339 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
1340 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1341 ctrl_ext = er32(CTRL_EXT);
1342 ew32(CTRL_EXT,
1343 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1344 }
1345}
1346
1347static void e1000_release_manageability(struct e1000_adapter *adapter)
1348{
1349 if (adapter->flags & FLAG_MNG_PT_ENABLED) {
1350 struct e1000_hw *hw = &adapter->hw;
1351
1352 u32 manc = er32(MANC);
1353
1354 /* re-enable hardware interception of ARP */
1355 manc |= E1000_MANC_ARP_EN;
1356 manc &= ~E1000_MANC_EN_MNG2HOST;
1357
1358 /* don't explicitly have to mess with MANC2H since
1359 * MANC has an enable disable that gates MANC2H */
1360 ew32(MANC, manc);
1361 }
1362}
1363
1364/**
1365 * @e1000_alloc_ring - allocate memory for a ring structure
1366 **/
1367static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
1368 struct e1000_ring *ring)
1369{
1370 struct pci_dev *pdev = adapter->pdev;
1371
1372 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
1373 GFP_KERNEL);
1374 if (!ring->desc)
1375 return -ENOMEM;
1376
1377 return 0;
1378}
1379
1380/**
1381 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1382 * @adapter: board private structure
1383 *
1384 * Return 0 on success, negative on failure
1385 **/
1386int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
1387{
1388 struct e1000_ring *tx_ring = adapter->tx_ring;
1389 int err = -ENOMEM, size;
1390
1391 size = sizeof(struct e1000_buffer) * tx_ring->count;
1392 tx_ring->buffer_info = vmalloc(size);
1393 if (!tx_ring->buffer_info)
1394 goto err;
1395 memset(tx_ring->buffer_info, 0, size);
1396
1397 /* round up to nearest 4K */
1398 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1399 tx_ring->size = ALIGN(tx_ring->size, 4096);
1400
1401 err = e1000_alloc_ring_dma(adapter, tx_ring);
1402 if (err)
1403 goto err;
1404
1405 tx_ring->next_to_use = 0;
1406 tx_ring->next_to_clean = 0;
1407 spin_lock_init(&adapter->tx_queue_lock);
1408
1409 return 0;
1410err:
1411 vfree(tx_ring->buffer_info);
1412 ndev_err(adapter->netdev,
1413 "Unable to allocate memory for the transmit descriptor ring\n");
1414 return err;
1415}
1416
1417/**
1418 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1419 * @adapter: board private structure
1420 *
1421 * Returns 0 on success, negative on failure
1422 **/
1423int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
1424{
1425 struct e1000_ring *rx_ring = adapter->rx_ring;
1426 int size, desc_len, err = -ENOMEM;
1427
1428 size = sizeof(struct e1000_buffer) * rx_ring->count;
1429 rx_ring->buffer_info = vmalloc(size);
1430 if (!rx_ring->buffer_info)
1431 goto err;
1432 memset(rx_ring->buffer_info, 0, size);
1433
1434 rx_ring->ps_pages = kcalloc(rx_ring->count * PS_PAGE_BUFFERS,
1435 sizeof(struct e1000_ps_page),
1436 GFP_KERNEL);
1437 if (!rx_ring->ps_pages)
1438 goto err;
1439
1440 desc_len = sizeof(union e1000_rx_desc_packet_split);
1441
1442 /* Round up to nearest 4K */
1443 rx_ring->size = rx_ring->count * desc_len;
1444 rx_ring->size = ALIGN(rx_ring->size, 4096);
1445
1446 err = e1000_alloc_ring_dma(adapter, rx_ring);
1447 if (err)
1448 goto err;
1449
1450 rx_ring->next_to_clean = 0;
1451 rx_ring->next_to_use = 0;
1452 rx_ring->rx_skb_top = NULL;
1453
1454 return 0;
1455err:
1456 vfree(rx_ring->buffer_info);
1457 kfree(rx_ring->ps_pages);
1458 ndev_err(adapter->netdev,
1459 "Unable to allocate memory for the transmit descriptor ring\n");
1460 return err;
1461}
1462
1463/**
1464 * e1000_clean_tx_ring - Free Tx Buffers
1465 * @adapter: board private structure
1466 **/
1467static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
1468{
1469 struct e1000_ring *tx_ring = adapter->tx_ring;
1470 struct e1000_buffer *buffer_info;
1471 unsigned long size;
1472 unsigned int i;
1473
1474 for (i = 0; i < tx_ring->count; i++) {
1475 buffer_info = &tx_ring->buffer_info[i];
1476 e1000_put_txbuf(adapter, buffer_info);
1477 }
1478
1479 size = sizeof(struct e1000_buffer) * tx_ring->count;
1480 memset(tx_ring->buffer_info, 0, size);
1481
1482 memset(tx_ring->desc, 0, tx_ring->size);
1483
1484 tx_ring->next_to_use = 0;
1485 tx_ring->next_to_clean = 0;
1486
1487 writel(0, adapter->hw.hw_addr + tx_ring->head);
1488 writel(0, adapter->hw.hw_addr + tx_ring->tail);
1489}
1490
1491/**
1492 * e1000e_free_tx_resources - Free Tx Resources per Queue
1493 * @adapter: board private structure
1494 *
1495 * Free all transmit software resources
1496 **/
1497void e1000e_free_tx_resources(struct e1000_adapter *adapter)
1498{
1499 struct pci_dev *pdev = adapter->pdev;
1500 struct e1000_ring *tx_ring = adapter->tx_ring;
1501
1502 e1000_clean_tx_ring(adapter);
1503
1504 vfree(tx_ring->buffer_info);
1505 tx_ring->buffer_info = NULL;
1506
1507 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1508 tx_ring->dma);
1509 tx_ring->desc = NULL;
1510}
1511
1512/**
1513 * e1000e_free_rx_resources - Free Rx Resources
1514 * @adapter: board private structure
1515 *
1516 * Free all receive software resources
1517 **/
1518
1519void e1000e_free_rx_resources(struct e1000_adapter *adapter)
1520{
1521 struct pci_dev *pdev = adapter->pdev;
1522 struct e1000_ring *rx_ring = adapter->rx_ring;
1523
1524 e1000_clean_rx_ring(adapter);
1525
1526 vfree(rx_ring->buffer_info);
1527 rx_ring->buffer_info = NULL;
1528
1529 kfree(rx_ring->ps_pages);
1530 rx_ring->ps_pages = NULL;
1531
1532 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1533 rx_ring->dma);
1534 rx_ring->desc = NULL;
1535}
1536
1537/**
1538 * e1000_update_itr - update the dynamic ITR value based on statistics
1539 * Stores a new ITR value based on packets and byte
1540 * counts during the last interrupt. The advantage of per interrupt
1541 * computation is faster updates and more accurate ITR for the current
1542 * traffic pattern. Constants in this function were computed
1543 * based on theoretical maximum wire speed and thresholds were set based
1544 * on testing data as well as attempting to minimize response time
1545 * while increasing bulk throughput.
1546 * this functionality is controlled by the InterruptThrottleRate module
1547 * parameter (see e1000_param.c)
1548 * @adapter: pointer to adapter
1549 * @itr_setting: current adapter->itr
1550 * @packets: the number of packets during this measurement interval
1551 * @bytes: the number of bytes during this measurement interval
1552 **/
1553static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
1554 u16 itr_setting, int packets,
1555 int bytes)
1556{
1557 unsigned int retval = itr_setting;
1558
1559 if (packets == 0)
1560 goto update_itr_done;
1561
1562 switch (itr_setting) {
1563 case lowest_latency:
1564 /* handle TSO and jumbo frames */
1565 if (bytes/packets > 8000)
1566 retval = bulk_latency;
1567 else if ((packets < 5) && (bytes > 512)) {
1568 retval = low_latency;
1569 }
1570 break;
1571 case low_latency: /* 50 usec aka 20000 ints/s */
1572 if (bytes > 10000) {
1573 /* this if handles the TSO accounting */
1574 if (bytes/packets > 8000) {
1575 retval = bulk_latency;
1576 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
1577 retval = bulk_latency;
1578 } else if ((packets > 35)) {
1579 retval = lowest_latency;
1580 }
1581 } else if (bytes/packets > 2000) {
1582 retval = bulk_latency;
1583 } else if (packets <= 2 && bytes < 512) {
1584 retval = lowest_latency;
1585 }
1586 break;
1587 case bulk_latency: /* 250 usec aka 4000 ints/s */
1588 if (bytes > 25000) {
1589 if (packets > 35) {
1590 retval = low_latency;
1591 }
1592 } else if (bytes < 6000) {
1593 retval = low_latency;
1594 }
1595 break;
1596 }
1597
1598update_itr_done:
1599 return retval;
1600}
1601
1602static void e1000_set_itr(struct e1000_adapter *adapter)
1603{
1604 struct e1000_hw *hw = &adapter->hw;
1605 u16 current_itr;
1606 u32 new_itr = adapter->itr;
1607
1608 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1609 if (adapter->link_speed != SPEED_1000) {
1610 current_itr = 0;
1611 new_itr = 4000;
1612 goto set_itr_now;
1613 }
1614
1615 adapter->tx_itr = e1000_update_itr(adapter,
1616 adapter->tx_itr,
1617 adapter->total_tx_packets,
1618 adapter->total_tx_bytes);
1619 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1620 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
1621 adapter->tx_itr = low_latency;
1622
1623 adapter->rx_itr = e1000_update_itr(adapter,
1624 adapter->rx_itr,
1625 adapter->total_rx_packets,
1626 adapter->total_rx_bytes);
1627 /* conservative mode (itr 3) eliminates the lowest_latency setting */
1628 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
1629 adapter->rx_itr = low_latency;
1630
1631 current_itr = max(adapter->rx_itr, adapter->tx_itr);
1632
1633 switch (current_itr) {
1634 /* counts and packets in update_itr are dependent on these numbers */
1635 case lowest_latency:
1636 new_itr = 70000;
1637 break;
1638 case low_latency:
1639 new_itr = 20000; /* aka hwitr = ~200 */
1640 break;
1641 case bulk_latency:
1642 new_itr = 4000;
1643 break;
1644 default:
1645 break;
1646 }
1647
1648set_itr_now:
1649 if (new_itr != adapter->itr) {
1650 /* this attempts to bias the interrupt rate towards Bulk
1651 * by adding intermediate steps when interrupt rate is
1652 * increasing */
1653 new_itr = new_itr > adapter->itr ?
1654 min(adapter->itr + (new_itr >> 2), new_itr) :
1655 new_itr;
1656 adapter->itr = new_itr;
1657 ew32(ITR, 1000000000 / (new_itr * 256));
1658 }
1659}
1660
1661/**
1662 * e1000_clean - NAPI Rx polling callback
1663 * @adapter: board private structure
1664 **/
1665static int e1000_clean(struct napi_struct *napi, int budget)
1666{
1667 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
1668 struct net_device *poll_dev = adapter->netdev;
1669 int tx_cleaned = 0, work_done = 0;
1670
1671 /* Must NOT use netdev_priv macro here. */
1672 adapter = poll_dev->priv;
1673
1674 /* Keep link state information with original netdev */
1675 if (!netif_carrier_ok(poll_dev))
1676 goto quit_polling;
1677
1678 /* e1000_clean is called per-cpu. This lock protects
1679 * tx_ring from being cleaned by multiple cpus
1680 * simultaneously. A failure obtaining the lock means
1681 * tx_ring is currently being cleaned anyway. */
1682 if (spin_trylock(&adapter->tx_queue_lock)) {
1683 tx_cleaned = e1000_clean_tx_irq(adapter);
1684 spin_unlock(&adapter->tx_queue_lock);
1685 }
1686
1687 adapter->clean_rx(adapter, &work_done, budget);
1688
1689 /* If no Tx and not enough Rx work done, exit the polling mode */
1690 if ((!tx_cleaned && (work_done < budget)) ||
1691 !netif_running(poll_dev)) {
1692quit_polling:
1693 if (adapter->itr_setting & 3)
1694 e1000_set_itr(adapter);
1695 netif_rx_complete(poll_dev, napi);
1696 e1000_irq_enable(adapter);
1697 }
1698
1699 return work_done;
1700}
1701
1702static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1703{
1704 struct e1000_adapter *adapter = netdev_priv(netdev);
1705 struct e1000_hw *hw = &adapter->hw;
1706 u32 vfta, index;
1707
1708 /* don't update vlan cookie if already programmed */
1709 if ((adapter->hw.mng_cookie.status &
1710 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1711 (vid == adapter->mng_vlan_id))
1712 return;
1713 /* add VID to filter table */
1714 index = (vid >> 5) & 0x7F;
1715 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
1716 vfta |= (1 << (vid & 0x1F));
1717 e1000e_write_vfta(hw, index, vfta);
1718}
1719
1720static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1721{
1722 struct e1000_adapter *adapter = netdev_priv(netdev);
1723 struct e1000_hw *hw = &adapter->hw;
1724 u32 vfta, index;
1725
1726 e1000_irq_disable(adapter);
1727 vlan_group_set_device(adapter->vlgrp, vid, NULL);
1728 e1000_irq_enable(adapter);
1729
1730 if ((adapter->hw.mng_cookie.status &
1731 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1732 (vid == adapter->mng_vlan_id)) {
1733 /* release control to f/w */
1734 e1000_release_hw_control(adapter);
1735 return;
1736 }
1737
1738 /* remove VID from filter table */
1739 index = (vid >> 5) & 0x7F;
1740 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
1741 vfta &= ~(1 << (vid & 0x1F));
1742 e1000e_write_vfta(hw, index, vfta);
1743}
1744
1745static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
1746{
1747 struct net_device *netdev = adapter->netdev;
1748 u16 vid = adapter->hw.mng_cookie.vlan_id;
1749 u16 old_vid = adapter->mng_vlan_id;
1750
1751 if (!adapter->vlgrp)
1752 return;
1753
1754 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
1755 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1756 if (adapter->hw.mng_cookie.status &
1757 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
1758 e1000_vlan_rx_add_vid(netdev, vid);
1759 adapter->mng_vlan_id = vid;
1760 }
1761
1762 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
1763 (vid != old_vid) &&
1764 !vlan_group_get_device(adapter->vlgrp, old_vid))
1765 e1000_vlan_rx_kill_vid(netdev, old_vid);
1766 } else {
1767 adapter->mng_vlan_id = vid;
1768 }
1769}
1770
1771
1772static void e1000_vlan_rx_register(struct net_device *netdev,
1773 struct vlan_group *grp)
1774{
1775 struct e1000_adapter *adapter = netdev_priv(netdev);
1776 struct e1000_hw *hw = &adapter->hw;
1777 u32 ctrl, rctl;
1778
1779 e1000_irq_disable(adapter);
1780 adapter->vlgrp = grp;
1781
1782 if (grp) {
1783 /* enable VLAN tag insert/strip */
1784 ctrl = er32(CTRL);
1785 ctrl |= E1000_CTRL_VME;
1786 ew32(CTRL, ctrl);
1787
1788 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
1789 /* enable VLAN receive filtering */
1790 rctl = er32(RCTL);
1791 rctl |= E1000_RCTL_VFE;
1792 rctl &= ~E1000_RCTL_CFIEN;
1793 ew32(RCTL, rctl);
1794 e1000_update_mng_vlan(adapter);
1795 }
1796 } else {
1797 /* disable VLAN tag insert/strip */
1798 ctrl = er32(CTRL);
1799 ctrl &= ~E1000_CTRL_VME;
1800 ew32(CTRL, ctrl);
1801
1802 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
1803 /* disable VLAN filtering */
1804 rctl = er32(RCTL);
1805 rctl &= ~E1000_RCTL_VFE;
1806 ew32(RCTL, rctl);
1807 if (adapter->mng_vlan_id !=
1808 (u16)E1000_MNG_VLAN_NONE) {
1809 e1000_vlan_rx_kill_vid(netdev,
1810 adapter->mng_vlan_id);
1811 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1812 }
1813 }
1814 }
1815
1816 e1000_irq_enable(adapter);
1817}
1818
1819static void e1000_restore_vlan(struct e1000_adapter *adapter)
1820{
1821 u16 vid;
1822
1823 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1824
1825 if (!adapter->vlgrp)
1826 return;
1827
1828 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1829 if (!vlan_group_get_device(adapter->vlgrp, vid))
1830 continue;
1831 e1000_vlan_rx_add_vid(adapter->netdev, vid);
1832 }
1833}
1834
1835static void e1000_init_manageability(struct e1000_adapter *adapter)
1836{
1837 struct e1000_hw *hw = &adapter->hw;
1838 u32 manc, manc2h;
1839
1840 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
1841 return;
1842
1843 manc = er32(MANC);
1844
1845 /* disable hardware interception of ARP */
1846 manc &= ~(E1000_MANC_ARP_EN);
1847
1848 /* enable receiving management packets to the host. this will probably
1849 * generate destination unreachable messages from the host OS, but
1850 * the packets will be handled on SMBUS */
1851 manc |= E1000_MANC_EN_MNG2HOST;
1852 manc2h = er32(MANC2H);
1853#define E1000_MNG2HOST_PORT_623 (1 << 5)
1854#define E1000_MNG2HOST_PORT_664 (1 << 6)
1855 manc2h |= E1000_MNG2HOST_PORT_623;
1856 manc2h |= E1000_MNG2HOST_PORT_664;
1857 ew32(MANC2H, manc2h);
1858 ew32(MANC, manc);
1859}
1860
1861/**
1862 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1863 * @adapter: board private structure
1864 *
1865 * Configure the Tx unit of the MAC after a reset.
1866 **/
1867static void e1000_configure_tx(struct e1000_adapter *adapter)
1868{
1869 struct e1000_hw *hw = &adapter->hw;
1870 struct e1000_ring *tx_ring = adapter->tx_ring;
1871 u64 tdba;
1872 u32 tdlen, tctl, tipg, tarc;
1873 u32 ipgr1, ipgr2;
1874
1875 /* Setup the HW Tx Head and Tail descriptor pointers */
1876 tdba = tx_ring->dma;
1877 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
1878 ew32(TDBAL, (tdba & DMA_32BIT_MASK));
1879 ew32(TDBAH, (tdba >> 32));
1880 ew32(TDLEN, tdlen);
1881 ew32(TDH, 0);
1882 ew32(TDT, 0);
1883 tx_ring->head = E1000_TDH;
1884 tx_ring->tail = E1000_TDT;
1885
1886 /* Set the default values for the Tx Inter Packet Gap timer */
1887 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
1888 ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
1889 ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
1890
1891 if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
1892 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
1893
1894 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1895 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1896 ew32(TIPG, tipg);
1897
1898 /* Set the Tx Interrupt Delay register */
1899 ew32(TIDV, adapter->tx_int_delay);
1900 /* tx irq moderation */
1901 ew32(TADV, adapter->tx_abs_int_delay);
1902
1903 /* Program the Transmit Control Register */
1904 tctl = er32(TCTL);
1905 tctl &= ~E1000_TCTL_CT;
1906 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1907 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1908
1909 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
1910 tarc = er32(TARC0);
1911 /* set the speed mode bit, we'll clear it if we're not at
1912 * gigabit link later */
1913#define SPEED_MODE_BIT (1 << 21)
1914 tarc |= SPEED_MODE_BIT;
1915 ew32(TARC0, tarc);
1916 }
1917
1918 /* errata: program both queues to unweighted RR */
1919 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
1920 tarc = er32(TARC0);
1921 tarc |= 1;
1922 ew32(TARC0, tarc);
1923 tarc = er32(TARC1);
1924 tarc |= 1;
1925 ew32(TARC1, tarc);
1926 }
1927
1928 e1000e_config_collision_dist(hw);
1929
1930 /* Setup Transmit Descriptor Settings for eop descriptor */
1931 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1932
1933 /* only set IDE if we are delaying interrupts using the timers */
1934 if (adapter->tx_int_delay)
1935 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1936
1937 /* enable Report Status bit */
1938 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1939
1940 ew32(TCTL, tctl);
1941
1942 adapter->tx_queue_len = adapter->netdev->tx_queue_len;
1943}
1944
1945/**
1946 * e1000_setup_rctl - configure the receive control registers
1947 * @adapter: Board private structure
1948 **/
1949#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1950 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1951static void e1000_setup_rctl(struct e1000_adapter *adapter)
1952{
1953 struct e1000_hw *hw = &adapter->hw;
1954 u32 rctl, rfctl;
1955 u32 psrctl = 0;
1956 u32 pages = 0;
1957
1958 /* Program MC offset vector base */
1959 rctl = er32(RCTL);
1960 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1961 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1962 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1963 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1964
1965 /* Do not Store bad packets */
1966 rctl &= ~E1000_RCTL_SBP;
1967
1968 /* Enable Long Packet receive */
1969 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1970 rctl &= ~E1000_RCTL_LPE;
1971 else
1972 rctl |= E1000_RCTL_LPE;
1973
1974 /* Setup buffer sizes */
1975 rctl &= ~E1000_RCTL_SZ_4096;
1976 rctl |= E1000_RCTL_BSEX;
1977 switch (adapter->rx_buffer_len) {
1978 case 256:
1979 rctl |= E1000_RCTL_SZ_256;
1980 rctl &= ~E1000_RCTL_BSEX;
1981 break;
1982 case 512:
1983 rctl |= E1000_RCTL_SZ_512;
1984 rctl &= ~E1000_RCTL_BSEX;
1985 break;
1986 case 1024:
1987 rctl |= E1000_RCTL_SZ_1024;
1988 rctl &= ~E1000_RCTL_BSEX;
1989 break;
1990 case 2048:
1991 default:
1992 rctl |= E1000_RCTL_SZ_2048;
1993 rctl &= ~E1000_RCTL_BSEX;
1994 break;
1995 case 4096:
1996 rctl |= E1000_RCTL_SZ_4096;
1997 break;
1998 case 8192:
1999 rctl |= E1000_RCTL_SZ_8192;
2000 break;
2001 case 16384:
2002 rctl |= E1000_RCTL_SZ_16384;
2003 break;
2004 }
2005
2006 /*
2007 * 82571 and greater support packet-split where the protocol
2008 * header is placed in skb->data and the packet data is
2009 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2010 * In the case of a non-split, skb->data is linearly filled,
2011 * followed by the page buffers. Therefore, skb->data is
2012 * sized to hold the largest protocol header.
2013 *
2014 * allocations using alloc_page take too long for regular MTU
2015 * so only enable packet split for jumbo frames
2016 *
2017 * Using pages when the page size is greater than 16k wastes
2018 * a lot of memory, since we allocate 3 pages at all times
2019 * per packet.
2020 */
2021 adapter->rx_ps_pages = 0;
2022 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2023 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2024 adapter->rx_ps_pages = pages;
2025
2026 if (adapter->rx_ps_pages) {
2027 /* Configure extra packet-split registers */
2028 rfctl = er32(RFCTL);
2029 rfctl |= E1000_RFCTL_EXTEN;
2030 /* disable packet split support for IPv6 extension headers,
2031 * because some malformed IPv6 headers can hang the RX */
2032 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
2033 E1000_RFCTL_NEW_IPV6_EXT_DIS);
2034
2035 ew32(RFCTL, rfctl);
2036
2037 /* disable the stripping of CRC because it breaks
2038 * BMC firmware connected over SMBUS */
2039 rctl |= E1000_RCTL_DTYP_PS /* | E1000_RCTL_SECRC */;
2040
2041 psrctl |= adapter->rx_ps_bsize0 >>
2042 E1000_PSRCTL_BSIZE0_SHIFT;
2043
2044 switch (adapter->rx_ps_pages) {
2045 case 3:
2046 psrctl |= PAGE_SIZE <<
2047 E1000_PSRCTL_BSIZE3_SHIFT;
2048 case 2:
2049 psrctl |= PAGE_SIZE <<
2050 E1000_PSRCTL_BSIZE2_SHIFT;
2051 case 1:
2052 psrctl |= PAGE_SIZE >>
2053 E1000_PSRCTL_BSIZE1_SHIFT;
2054 break;
2055 }
2056
2057 ew32(PSRCTL, psrctl);
2058 }
2059
2060 ew32(RCTL, rctl);
2061}
2062
2063/**
2064 * e1000_configure_rx - Configure Receive Unit after Reset
2065 * @adapter: board private structure
2066 *
2067 * Configure the Rx unit of the MAC after a reset.
2068 **/
2069static void e1000_configure_rx(struct e1000_adapter *adapter)
2070{
2071 struct e1000_hw *hw = &adapter->hw;
2072 struct e1000_ring *rx_ring = adapter->rx_ring;
2073 u64 rdba;
2074 u32 rdlen, rctl, rxcsum, ctrl_ext;
2075
2076 if (adapter->rx_ps_pages) {
2077 /* this is a 32 byte descriptor */
2078 rdlen = rx_ring->count *
2079 sizeof(union e1000_rx_desc_packet_split);
2080 adapter->clean_rx = e1000_clean_rx_irq_ps;
2081 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
2082 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + VLAN_HLEN + 4) {
2083 rdlen = rx_ring->count *
2084 sizeof(struct e1000_rx_desc);
2085 adapter->clean_rx = e1000_clean_rx_irq_jumbo;
2086 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_jumbo;
2087 } else {
2088 rdlen = rx_ring->count *
2089 sizeof(struct e1000_rx_desc);
2090 adapter->clean_rx = e1000_clean_rx_irq;
2091 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
2092 }
2093
2094 /* disable receives while setting up the descriptors */
2095 rctl = er32(RCTL);
2096 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2097 e1e_flush();
2098 msleep(10);
2099
2100 /* set the Receive Delay Timer Register */
2101 ew32(RDTR, adapter->rx_int_delay);
2102
2103 /* irq moderation */
2104 ew32(RADV, adapter->rx_abs_int_delay);
2105 if (adapter->itr_setting != 0)
2106 ew32(ITR,
2107 1000000000 / (adapter->itr * 256));
2108
2109 ctrl_ext = er32(CTRL_EXT);
2110 /* Reset delay timers after every interrupt */
2111 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
2112 /* Auto-Mask interrupts upon ICR access */
2113 ctrl_ext |= E1000_CTRL_EXT_IAME;
2114 ew32(IAM, 0xffffffff);
2115 ew32(CTRL_EXT, ctrl_ext);
2116 e1e_flush();
2117
2118 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2119 * the Base and Length of the Rx Descriptor Ring */
2120 rdba = rx_ring->dma;
2121 ew32(RDBAL, (rdba & DMA_32BIT_MASK));
2122 ew32(RDBAH, (rdba >> 32));
2123 ew32(RDLEN, rdlen);
2124 ew32(RDH, 0);
2125 ew32(RDT, 0);
2126 rx_ring->head = E1000_RDH;
2127 rx_ring->tail = E1000_RDT;
2128
2129 /* Enable Receive Checksum Offload for TCP and UDP */
2130 rxcsum = er32(RXCSUM);
2131 if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
2132 rxcsum |= E1000_RXCSUM_TUOFL;
2133
2134 /* IPv4 payload checksum for UDP fragments must be
2135 * used in conjunction with packet-split. */
2136 if (adapter->rx_ps_pages)
2137 rxcsum |= E1000_RXCSUM_IPPCSE;
2138 } else {
2139 rxcsum &= ~E1000_RXCSUM_TUOFL;
2140 /* no need to clear IPPCSE as it defaults to 0 */
2141 }
2142 ew32(RXCSUM, rxcsum);
2143
2144 /* Enable early receives on supported devices, only takes effect when
2145 * packet size is equal or larger than the specified value (in 8 byte
2146 * units), e.g. using jumbo frames when setting to E1000_ERT_2048 */
2147 if ((adapter->flags & FLAG_HAS_ERT) &&
2148 (adapter->netdev->mtu > ETH_DATA_LEN))
2149 ew32(ERT, E1000_ERT_2048);
2150
2151 /* Enable Receives */
2152 ew32(RCTL, rctl);
2153}
2154
2155/**
2156 * e1000_mc_addr_list_update - Update Multicast addresses
2157 * @hw: pointer to the HW structure
2158 * @mc_addr_list: array of multicast addresses to program
2159 * @mc_addr_count: number of multicast addresses to program
2160 * @rar_used_count: the first RAR register free to program
2161 * @rar_count: total number of supported Receive Address Registers
2162 *
2163 * Updates the Receive Address Registers and Multicast Table Array.
2164 * The caller must have a packed mc_addr_list of multicast addresses.
2165 * The parameter rar_count will usually be hw->mac.rar_entry_count
2166 * unless there are workarounds that change this. Currently no func pointer
2167 * exists and all implementations are handled in the generic version of this
2168 * function.
2169 **/
2170static void e1000_mc_addr_list_update(struct e1000_hw *hw, u8 *mc_addr_list,
2171 u32 mc_addr_count, u32 rar_used_count,
2172 u32 rar_count)
2173{
2174 hw->mac.ops.mc_addr_list_update(hw, mc_addr_list, mc_addr_count,
2175 rar_used_count, rar_count);
2176}
2177
2178/**
2179 * e1000_set_multi - Multicast and Promiscuous mode set
2180 * @netdev: network interface device structure
2181 *
2182 * The set_multi entry point is called whenever the multicast address
2183 * list or the network interface flags are updated. This routine is
2184 * responsible for configuring the hardware for proper multicast,
2185 * promiscuous mode, and all-multi behavior.
2186 **/
2187static void e1000_set_multi(struct net_device *netdev)
2188{
2189 struct e1000_adapter *adapter = netdev_priv(netdev);
2190 struct e1000_hw *hw = &adapter->hw;
2191 struct e1000_mac_info *mac = &hw->mac;
2192 struct dev_mc_list *mc_ptr;
2193 u8 *mta_list;
2194 u32 rctl;
2195 int i;
2196
2197 /* Check for Promiscuous and All Multicast modes */
2198
2199 rctl = er32(RCTL);
2200
2201 if (netdev->flags & IFF_PROMISC) {
2202 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2203 } else if (netdev->flags & IFF_ALLMULTI) {
2204 rctl |= E1000_RCTL_MPE;
2205 rctl &= ~E1000_RCTL_UPE;
2206 } else {
2207 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2208 }
2209
2210 ew32(RCTL, rctl);
2211
2212 if (netdev->mc_count) {
2213 mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
2214 if (!mta_list)
2215 return;
2216
2217 /* prepare a packed array of only addresses. */
2218 mc_ptr = netdev->mc_list;
2219
2220 for (i = 0; i < netdev->mc_count; i++) {
2221 if (!mc_ptr)
2222 break;
2223 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
2224 ETH_ALEN);
2225 mc_ptr = mc_ptr->next;
2226 }
2227
2228 e1000_mc_addr_list_update(hw, mta_list, i, 1,
2229 mac->rar_entry_count);
2230 kfree(mta_list);
2231 } else {
2232 /*
2233 * if we're called from probe, we might not have
2234 * anything to do here, so clear out the list
2235 */
2236 e1000_mc_addr_list_update(hw, NULL, 0, 1,
2237 mac->rar_entry_count);
2238 }
2239}
2240
2241/**
2242 * e1000_configure - configure the hardware for RX and TX
2243 * @adapter: private board structure
2244 **/
2245static void e1000_configure(struct e1000_adapter *adapter)
2246{
2247 e1000_set_multi(adapter->netdev);
2248
2249 e1000_restore_vlan(adapter);
2250 e1000_init_manageability(adapter);
2251
2252 e1000_configure_tx(adapter);
2253 e1000_setup_rctl(adapter);
2254 e1000_configure_rx(adapter);
2255 adapter->alloc_rx_buf(adapter,
2256 e1000_desc_unused(adapter->rx_ring));
2257}
2258
2259/**
2260 * e1000e_power_up_phy - restore link in case the phy was powered down
2261 * @adapter: address of board private structure
2262 *
2263 * The phy may be powered down to save power and turn off link when the
2264 * driver is unloaded and wake on lan is not enabled (among others)
2265 * *** this routine MUST be followed by a call to e1000e_reset ***
2266 **/
2267void e1000e_power_up_phy(struct e1000_adapter *adapter)
2268{
2269 u16 mii_reg = 0;
2270
2271 /* Just clear the power down bit to wake the phy back up */
2272 if (adapter->hw.media_type == e1000_media_type_copper) {
2273 /* according to the manual, the phy will retain its
2274 * settings across a power-down/up cycle */
2275 e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg);
2276 mii_reg &= ~MII_CR_POWER_DOWN;
2277 e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg);
2278 }
2279
2280 adapter->hw.mac.ops.setup_link(&adapter->hw);
2281}
2282
2283/**
2284 * e1000_power_down_phy - Power down the PHY
2285 *
2286 * Power down the PHY so no link is implied when interface is down
2287 * The PHY cannot be powered down is management or WoL is active
2288 */
2289static void e1000_power_down_phy(struct e1000_adapter *adapter)
2290{
2291 struct e1000_hw *hw = &adapter->hw;
2292 u16 mii_reg;
2293
2294 /* WoL is enabled */
2295 if (!adapter->wol)
2296 return;
2297
2298 /* non-copper PHY? */
2299 if (adapter->hw.media_type != e1000_media_type_copper)
2300 return;
2301
2302 /* reset is blocked because of a SoL/IDER session */
2303 if (e1000e_check_mng_mode(hw) ||
2304 e1000_check_reset_block(hw))
2305 return;
2306
2307 /* managebility (AMT) is enabled */
2308 if (er32(MANC) & E1000_MANC_SMBUS_EN)
2309 return;
2310
2311 /* power down the PHY */
2312 e1e_rphy(hw, PHY_CONTROL, &mii_reg);
2313 mii_reg |= MII_CR_POWER_DOWN;
2314 e1e_wphy(hw, PHY_CONTROL, mii_reg);
2315 mdelay(1);
2316}
2317
2318/**
2319 * e1000e_reset - bring the hardware into a known good state
2320 *
2321 * This function boots the hardware and enables some settings that
2322 * require a configuration cycle of the hardware - those cannot be
2323 * set/changed during runtime. After reset the device needs to be
2324 * properly configured for rx, tx etc.
2325 */
2326void e1000e_reset(struct e1000_adapter *adapter)
2327{
2328 struct e1000_mac_info *mac = &adapter->hw.mac;
2329 struct e1000_hw *hw = &adapter->hw;
2330 u32 tx_space, min_tx_space, min_rx_space;
2331 u16 hwm;
2332
2333 if (mac->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN ) {
2334 /* To maintain wire speed transmits, the Tx FIFO should be
2335 * large enough to accommodate two full transmit packets,
2336 * rounded up to the next 1KB and expressed in KB. Likewise,
2337 * the Rx FIFO should be large enough to accommodate at least
2338 * one full receive packet and is similarly rounded up and
2339 * expressed in KB. */
2340 adapter->pba = er32(PBA);
2341 /* upper 16 bits has Tx packet buffer allocation size in KB */
2342 tx_space = adapter->pba >> 16;
2343 /* lower 16 bits has Rx packet buffer allocation size in KB */
2344 adapter->pba &= 0xffff;
2345 /* the tx fifo also stores 16 bytes of information about the tx
2346 * but don't include ethernet FCS because hardware appends it */
2347 min_tx_space = (mac->max_frame_size +
2348 sizeof(struct e1000_tx_desc) -
2349 ETH_FCS_LEN) * 2;
2350 min_tx_space = ALIGN(min_tx_space, 1024);
2351 min_tx_space >>= 10;
2352 /* software strips receive CRC, so leave room for it */
2353 min_rx_space = mac->max_frame_size;
2354 min_rx_space = ALIGN(min_rx_space, 1024);
2355 min_rx_space >>= 10;
2356
2357 /* If current Tx allocation is less than the min Tx FIFO size,
2358 * and the min Tx FIFO size is less than the current Rx FIFO
2359 * allocation, take space away from current Rx allocation */
2360 if (tx_space < min_tx_space &&
2361 ((min_tx_space - tx_space) < adapter->pba)) {
2362 adapter->pba -= - (min_tx_space - tx_space);
2363
2364 /* if short on rx space, rx wins and must trump tx
2365 * adjustment or use Early Receive if available */
2366 if ((adapter->pba < min_rx_space) &&
2367 (!(adapter->flags & FLAG_HAS_ERT)))
2368 /* ERT enabled in e1000_configure_rx */
2369 adapter->pba = min_rx_space;
2370 }
2371 }
2372
2373 ew32(PBA, adapter->pba);
2374
2375 /* flow control settings */
2376 /* The high water mark must be low enough to fit one full frame
2377 * (or the size used for early receive) above it in the Rx FIFO.
2378 * Set it to the lower of:
2379 * - 90% of the Rx FIFO size, and
2380 * - the full Rx FIFO size minus the early receive size (for parts
2381 * with ERT support assuming ERT set to E1000_ERT_2048), or
2382 * - the full Rx FIFO size minus one full frame */
2383 if (adapter->flags & FLAG_HAS_ERT)
2384 hwm = min(((adapter->pba << 10) * 9 / 10),
2385 ((adapter->pba << 10) - (E1000_ERT_2048 << 3)));
2386 else
2387 hwm = min(((adapter->pba << 10) * 9 / 10),
2388 ((adapter->pba << 10) - mac->max_frame_size));
2389
2390 mac->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */
2391 mac->fc_low_water = mac->fc_high_water - 8;
2392
2393 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
2394 mac->fc_pause_time = 0xFFFF;
2395 else
2396 mac->fc_pause_time = E1000_FC_PAUSE_TIME;
2397 mac->fc = mac->original_fc;
2398
2399 /* Allow time for pending master requests to run */
2400 mac->ops.reset_hw(hw);
2401 ew32(WUC, 0);
2402
2403 if (mac->ops.init_hw(hw))
2404 ndev_err(adapter->netdev, "Hardware Error\n");
2405
2406 e1000_update_mng_vlan(adapter);
2407
2408 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2409 ew32(VET, ETH_P_8021Q);
2410
2411 e1000e_reset_adaptive(hw);
2412 e1000_get_phy_info(hw);
2413
2414 if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) {
2415 u16 phy_data = 0;
2416 /* speed up time to link by disabling smart power down, ignore
2417 * the return value of this function because there is nothing
2418 * different we would do if it failed */
2419 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
2420 phy_data &= ~IGP02E1000_PM_SPD;
2421 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
2422 }
2423
2424 e1000_release_manageability(adapter);
2425}
2426
2427int e1000e_up(struct e1000_adapter *adapter)
2428{
2429 struct e1000_hw *hw = &adapter->hw;
2430
2431 /* hardware has been reset, we need to reload some things */
2432 e1000_configure(adapter);
2433
2434 clear_bit(__E1000_DOWN, &adapter->state);
2435
2436 napi_enable(&adapter->napi);
2437 e1000_irq_enable(adapter);
2438
2439 /* fire a link change interrupt to start the watchdog */
2440 ew32(ICS, E1000_ICS_LSC);
2441 return 0;
2442}
2443
2444void e1000e_down(struct e1000_adapter *adapter)
2445{
2446 struct net_device *netdev = adapter->netdev;
2447 struct e1000_hw *hw = &adapter->hw;
2448 u32 tctl, rctl;
2449
2450 /* signal that we're down so the interrupt handler does not
2451 * reschedule our watchdog timer */
2452 set_bit(__E1000_DOWN, &adapter->state);
2453
2454 /* disable receives in the hardware */
2455 rctl = er32(RCTL);
2456 ew32(RCTL, rctl & ~E1000_RCTL_EN);
2457 /* flush and sleep below */
2458
2459 netif_stop_queue(netdev);
2460
2461 /* disable transmits in the hardware */
2462 tctl = er32(TCTL);
2463 tctl &= ~E1000_TCTL_EN;
2464 ew32(TCTL, tctl);
2465 /* flush both disables and wait for them to finish */
2466 e1e_flush();
2467 msleep(10);
2468
2469 napi_disable(&adapter->napi);
2470 e1000_irq_disable(adapter);
2471
2472 del_timer_sync(&adapter->watchdog_timer);
2473 del_timer_sync(&adapter->phy_info_timer);
2474
2475 netdev->tx_queue_len = adapter->tx_queue_len;
2476 netif_carrier_off(netdev);
2477 adapter->link_speed = 0;
2478 adapter->link_duplex = 0;
2479
2480 e1000e_reset(adapter);
2481 e1000_clean_tx_ring(adapter);
2482 e1000_clean_rx_ring(adapter);
2483
2484 /*
2485 * TODO: for power management, we could drop the link and
2486 * pci_disable_device here.
2487 */
2488}
2489
2490void e1000e_reinit_locked(struct e1000_adapter *adapter)
2491{
2492 might_sleep();
2493 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
2494 msleep(1);
2495 e1000e_down(adapter);
2496 e1000e_up(adapter);
2497 clear_bit(__E1000_RESETTING, &adapter->state);
2498}
2499
2500/**
2501 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2502 * @adapter: board private structure to initialize
2503 *
2504 * e1000_sw_init initializes the Adapter private data structure.
2505 * Fields are initialized based on PCI device information and
2506 * OS network device settings (MTU size).
2507 **/
2508static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
2509{
2510 struct e1000_hw *hw = &adapter->hw;
2511 struct net_device *netdev = adapter->netdev;
2512
2513 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
2514 adapter->rx_ps_bsize0 = 128;
2515 hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2516 hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2517
2518 adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2519 if (!adapter->tx_ring)
2520 goto err;
2521
2522 adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2523 if (!adapter->rx_ring)
2524 goto err;
2525
2526 spin_lock_init(&adapter->tx_queue_lock);
2527
2528 /* Explicitly disable IRQ since the NIC can be in any state. */
2529 atomic_set(&adapter->irq_sem, 0);
2530 e1000_irq_disable(adapter);
2531
2532 spin_lock_init(&adapter->stats_lock);
2533
2534 set_bit(__E1000_DOWN, &adapter->state);
2535 return 0;
2536
2537err:
2538 ndev_err(netdev, "Unable to allocate memory for queues\n");
2539 kfree(adapter->rx_ring);
2540 kfree(adapter->tx_ring);
2541 return -ENOMEM;
2542}
2543
2544/**
2545 * e1000_open - Called when a network interface is made active
2546 * @netdev: network interface device structure
2547 *
2548 * Returns 0 on success, negative value on failure
2549 *
2550 * The open entry point is called when a network interface is made
2551 * active by the system (IFF_UP). At this point all resources needed
2552 * for transmit and receive operations are allocated, the interrupt
2553 * handler is registered with the OS, the watchdog timer is started,
2554 * and the stack is notified that the interface is ready.
2555 **/
2556static int e1000_open(struct net_device *netdev)
2557{
2558 struct e1000_adapter *adapter = netdev_priv(netdev);
2559 struct e1000_hw *hw = &adapter->hw;
2560 int err;
2561
2562 /* disallow open during test */
2563 if (test_bit(__E1000_TESTING, &adapter->state))
2564 return -EBUSY;
2565
2566 /* allocate transmit descriptors */
2567 err = e1000e_setup_tx_resources(adapter);
2568 if (err)
2569 goto err_setup_tx;
2570
2571 /* allocate receive descriptors */
2572 err = e1000e_setup_rx_resources(adapter);
2573 if (err)
2574 goto err_setup_rx;
2575
2576 e1000e_power_up_phy(adapter);
2577
2578 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2579 if ((adapter->hw.mng_cookie.status &
2580 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
2581 e1000_update_mng_vlan(adapter);
2582
2583 /* If AMT is enabled, let the firmware know that the network
2584 * interface is now open */
2585 if ((adapter->flags & FLAG_HAS_AMT) &&
2586 e1000e_check_mng_mode(&adapter->hw))
2587 e1000_get_hw_control(adapter);
2588
2589 /* before we allocate an interrupt, we must be ready to handle it.
2590 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
2591 * as soon as we call pci_request_irq, so we have to setup our
2592 * clean_rx handler before we do so. */
2593 e1000_configure(adapter);
2594
2595 err = e1000_request_irq(adapter);
2596 if (err)
2597 goto err_req_irq;
2598
2599 /* From here on the code is the same as e1000e_up() */
2600 clear_bit(__E1000_DOWN, &adapter->state);
2601
2602 napi_enable(&adapter->napi);
2603
2604 e1000_irq_enable(adapter);
2605
2606 /* fire a link status change interrupt to start the watchdog */
2607 ew32(ICS, E1000_ICS_LSC);
2608
2609 return 0;
2610
2611err_req_irq:
2612 e1000_release_hw_control(adapter);
2613 e1000_power_down_phy(adapter);
2614 e1000e_free_rx_resources(adapter);
2615err_setup_rx:
2616 e1000e_free_tx_resources(adapter);
2617err_setup_tx:
2618 e1000e_reset(adapter);
2619
2620 return err;
2621}
2622
2623/**
2624 * e1000_close - Disables a network interface
2625 * @netdev: network interface device structure
2626 *
2627 * Returns 0, this is not allowed to fail
2628 *
2629 * The close entry point is called when an interface is de-activated
2630 * by the OS. The hardware is still under the drivers control, but
2631 * needs to be disabled. A global MAC reset is issued to stop the
2632 * hardware, and all transmit and receive resources are freed.
2633 **/
2634static int e1000_close(struct net_device *netdev)
2635{
2636 struct e1000_adapter *adapter = netdev_priv(netdev);
2637
2638 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
2639 e1000e_down(adapter);
2640 e1000_power_down_phy(adapter);
2641 e1000_free_irq(adapter);
2642
2643 e1000e_free_tx_resources(adapter);
2644 e1000e_free_rx_resources(adapter);
2645
2646 /* kill manageability vlan ID if supported, but not if a vlan with
2647 * the same ID is registered on the host OS (let 8021q kill it) */
2648 if ((adapter->hw.mng_cookie.status &
2649 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2650 !(adapter->vlgrp &&
2651 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
2652 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2653
2654 /* If AMT is enabled, let the firmware know that the network
2655 * interface is now closed */
2656 if ((adapter->flags & FLAG_HAS_AMT) &&
2657 e1000e_check_mng_mode(&adapter->hw))
2658 e1000_release_hw_control(adapter);
2659
2660 return 0;
2661}
2662/**
2663 * e1000_set_mac - Change the Ethernet Address of the NIC
2664 * @netdev: network interface device structure
2665 * @p: pointer to an address structure
2666 *
2667 * Returns 0 on success, negative on failure
2668 **/
2669static int e1000_set_mac(struct net_device *netdev, void *p)
2670{
2671 struct e1000_adapter *adapter = netdev_priv(netdev);
2672 struct sockaddr *addr = p;
2673
2674 if (!is_valid_ether_addr(addr->sa_data))
2675 return -EADDRNOTAVAIL;
2676
2677 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2678 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
2679
2680 e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
2681
2682 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
2683 /* activate the work around */
2684 e1000e_set_laa_state_82571(&adapter->hw, 1);
2685
2686 /* Hold a copy of the LAA in RAR[14] This is done so that
2687 * between the time RAR[0] gets clobbered and the time it
2688 * gets fixed (in e1000_watchdog), the actual LAA is in one
2689 * of the RARs and no incoming packets directed to this port
2690 * are dropped. Eventually the LAA will be in RAR[0] and
2691 * RAR[14] */
2692 e1000e_rar_set(&adapter->hw,
2693 adapter->hw.mac.addr,
2694 adapter->hw.mac.rar_entry_count - 1);
2695 }
2696
2697 return 0;
2698}
2699
2700/* Need to wait a few seconds after link up to get diagnostic information from
2701 * the phy */
2702static void e1000_update_phy_info(unsigned long data)
2703{
2704 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2705 e1000_get_phy_info(&adapter->hw);
2706}
2707
2708/**
2709 * e1000e_update_stats - Update the board statistics counters
2710 * @adapter: board private structure
2711 **/
2712void e1000e_update_stats(struct e1000_adapter *adapter)
2713{
2714 struct e1000_hw *hw = &adapter->hw;
2715 struct pci_dev *pdev = adapter->pdev;
2716 unsigned long irq_flags;
2717 u16 phy_tmp;
2718
2719#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2720
2721 /*
2722 * Prevent stats update while adapter is being reset, or if the pci
2723 * connection is down.
2724 */
2725 if (adapter->link_speed == 0)
2726 return;
2727 if (pci_channel_offline(pdev))
2728 return;
2729
2730 spin_lock_irqsave(&adapter->stats_lock, irq_flags);
2731
2732 /* these counters are modified from e1000_adjust_tbi_stats,
2733 * called from the interrupt context, so they must only
2734 * be written while holding adapter->stats_lock
2735 */
2736
2737 adapter->stats.crcerrs += er32(CRCERRS);
2738 adapter->stats.gprc += er32(GPRC);
2739 adapter->stats.gorcl += er32(GORCL);
2740 adapter->stats.gorch += er32(GORCH);
2741 adapter->stats.bprc += er32(BPRC);
2742 adapter->stats.mprc += er32(MPRC);
2743 adapter->stats.roc += er32(ROC);
2744
2745 if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) {
2746 adapter->stats.prc64 += er32(PRC64);
2747 adapter->stats.prc127 += er32(PRC127);
2748 adapter->stats.prc255 += er32(PRC255);
2749 adapter->stats.prc511 += er32(PRC511);
2750 adapter->stats.prc1023 += er32(PRC1023);
2751 adapter->stats.prc1522 += er32(PRC1522);
2752 adapter->stats.symerrs += er32(SYMERRS);
2753 adapter->stats.sec += er32(SEC);
2754 }
2755
2756 adapter->stats.mpc += er32(MPC);
2757 adapter->stats.scc += er32(SCC);
2758 adapter->stats.ecol += er32(ECOL);
2759 adapter->stats.mcc += er32(MCC);
2760 adapter->stats.latecol += er32(LATECOL);
2761 adapter->stats.dc += er32(DC);
2762 adapter->stats.rlec += er32(RLEC);
2763 adapter->stats.xonrxc += er32(XONRXC);
2764 adapter->stats.xontxc += er32(XONTXC);
2765 adapter->stats.xoffrxc += er32(XOFFRXC);
2766 adapter->stats.xofftxc += er32(XOFFTXC);
2767 adapter->stats.fcruc += er32(FCRUC);
2768 adapter->stats.gptc += er32(GPTC);
2769 adapter->stats.gotcl += er32(GOTCL);
2770 adapter->stats.gotch += er32(GOTCH);
2771 adapter->stats.rnbc += er32(RNBC);
2772 adapter->stats.ruc += er32(RUC);
2773 adapter->stats.rfc += er32(RFC);
2774 adapter->stats.rjc += er32(RJC);
2775 adapter->stats.torl += er32(TORL);
2776 adapter->stats.torh += er32(TORH);
2777 adapter->stats.totl += er32(TOTL);
2778 adapter->stats.toth += er32(TOTH);
2779 adapter->stats.tpr += er32(TPR);
2780
2781 if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) {
2782 adapter->stats.ptc64 += er32(PTC64);
2783 adapter->stats.ptc127 += er32(PTC127);
2784 adapter->stats.ptc255 += er32(PTC255);
2785 adapter->stats.ptc511 += er32(PTC511);
2786 adapter->stats.ptc1023 += er32(PTC1023);
2787 adapter->stats.ptc1522 += er32(PTC1522);
2788 }
2789
2790 adapter->stats.mptc += er32(MPTC);
2791 adapter->stats.bptc += er32(BPTC);
2792
2793 /* used for adaptive IFS */
2794
2795 hw->mac.tx_packet_delta = er32(TPT);
2796 adapter->stats.tpt += hw->mac.tx_packet_delta;
2797 hw->mac.collision_delta = er32(COLC);
2798 adapter->stats.colc += hw->mac.collision_delta;
2799
2800 adapter->stats.algnerrc += er32(ALGNERRC);
2801 adapter->stats.rxerrc += er32(RXERRC);
2802 adapter->stats.tncrs += er32(TNCRS);
2803 adapter->stats.cexterr += er32(CEXTERR);
2804 adapter->stats.tsctc += er32(TSCTC);
2805 adapter->stats.tsctfc += er32(TSCTFC);
2806
2807 adapter->stats.iac += er32(IAC);
2808
2809 if (adapter->flags & FLAG_HAS_STATS_ICR_ICT) {
2810 adapter->stats.icrxoc += er32(ICRXOC);
2811 adapter->stats.icrxptc += er32(ICRXPTC);
2812 adapter->stats.icrxatc += er32(ICRXATC);
2813 adapter->stats.ictxptc += er32(ICTXPTC);
2814 adapter->stats.ictxatc += er32(ICTXATC);
2815 adapter->stats.ictxqec += er32(ICTXQEC);
2816 adapter->stats.ictxqmtc += er32(ICTXQMTC);
2817 adapter->stats.icrxdmtc += er32(ICRXDMTC);
2818 }
2819
2820 /* Fill out the OS statistics structure */
2821 adapter->net_stats.rx_packets = adapter->stats.gprc;
2822 adapter->net_stats.tx_packets = adapter->stats.gptc;
2823 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
2824 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
2825 adapter->net_stats.multicast = adapter->stats.mprc;
2826 adapter->net_stats.collisions = adapter->stats.colc;
2827
2828 /* Rx Errors */
2829
2830 /* RLEC on some newer hardware can be incorrect so build
2831 * our own version based on RUC and ROC */
2832 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
2833 adapter->stats.crcerrs + adapter->stats.algnerrc +
2834 adapter->stats.ruc + adapter->stats.roc +
2835 adapter->stats.cexterr;
2836 adapter->net_stats.rx_length_errors = adapter->stats.ruc +
2837 adapter->stats.roc;
2838 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
2839 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
2840 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
2841
2842 /* Tx Errors */
2843 adapter->net_stats.tx_errors = adapter->stats.ecol +
2844 adapter->stats.latecol;
2845 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
2846 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
2847 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
2848
2849 /* Tx Dropped needs to be maintained elsewhere */
2850
2851 /* Phy Stats */
2852 if (hw->media_type == e1000_media_type_copper) {
2853 if ((adapter->link_speed == SPEED_1000) &&
2854 (!e1e_rphy(hw, PHY_1000T_STATUS, &phy_tmp))) {
2855 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
2856 adapter->phy_stats.idle_errors += phy_tmp;
2857 }
2858 }
2859
2860 /* Management Stats */
2861 adapter->stats.mgptc += er32(MGTPTC);
2862 adapter->stats.mgprc += er32(MGTPRC);
2863 adapter->stats.mgpdc += er32(MGTPDC);
2864
2865 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
2866}
2867
2868static void e1000_print_link_info(struct e1000_adapter *adapter)
2869{
2870 struct net_device *netdev = adapter->netdev;
2871 struct e1000_hw *hw = &adapter->hw;
2872 u32 ctrl = er32(CTRL);
2873
2874 ndev_info(netdev,
2875 "Link is Up %d Mbps %s, Flow Control: %s\n",
2876 adapter->link_speed,
2877 (adapter->link_duplex == FULL_DUPLEX) ?
2878 "Full Duplex" : "Half Duplex",
2879 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
2880 "RX/TX" :
2881 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
2882 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
2883}
2884
2885/**
2886 * e1000_watchdog - Timer Call-back
2887 * @data: pointer to adapter cast into an unsigned long
2888 **/
2889static void e1000_watchdog(unsigned long data)
2890{
2891 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2892
2893 /* Do the rest outside of interrupt context */
2894 schedule_work(&adapter->watchdog_task);
2895
2896 /* TODO: make this use queue_delayed_work() */
2897}
2898
2899static void e1000_watchdog_task(struct work_struct *work)
2900{
2901 struct e1000_adapter *adapter = container_of(work,
2902 struct e1000_adapter, watchdog_task);
2903
2904 struct net_device *netdev = adapter->netdev;
2905 struct e1000_mac_info *mac = &adapter->hw.mac;
2906 struct e1000_ring *tx_ring = adapter->tx_ring;
2907 struct e1000_hw *hw = &adapter->hw;
2908 u32 link, tctl;
2909 s32 ret_val;
2910 int tx_pending = 0;
2911
2912 if ((netif_carrier_ok(netdev)) &&
2913 (er32(STATUS) & E1000_STATUS_LU))
2914 goto link_up;
2915
2916 ret_val = mac->ops.check_for_link(hw);
2917 if ((ret_val == E1000_ERR_PHY) &&
2918 (adapter->hw.phy.type == e1000_phy_igp_3) &&
2919 (er32(CTRL) &
2920 E1000_PHY_CTRL_GBE_DISABLE)) {
2921 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
2922 ndev_info(netdev,
2923 "Gigabit has been disabled, downgrading speed\n");
2924 }
2925
2926 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
2927 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
2928 e1000_update_mng_vlan(adapter);
2929
2930 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2931 !(er32(TXCW) & E1000_TXCW_ANE))
2932 link = adapter->hw.mac.serdes_has_link;
2933 else
2934 link = er32(STATUS) & E1000_STATUS_LU;
2935
2936 if (link) {
2937 if (!netif_carrier_ok(netdev)) {
2938 bool txb2b = 1;
2939 mac->ops.get_link_up_info(&adapter->hw,
2940 &adapter->link_speed,
2941 &adapter->link_duplex);
2942 e1000_print_link_info(adapter);
2943 /* tweak tx_queue_len according to speed/duplex
2944 * and adjust the timeout factor */
2945 netdev->tx_queue_len = adapter->tx_queue_len;
2946 adapter->tx_timeout_factor = 1;
2947 switch (adapter->link_speed) {
2948 case SPEED_10:
2949 txb2b = 0;
2950 netdev->tx_queue_len = 10;
2951 adapter->tx_timeout_factor = 14;
2952 break;
2953 case SPEED_100:
2954 txb2b = 0;
2955 netdev->tx_queue_len = 100;
2956 /* maybe add some timeout factor ? */
2957 break;
2958 }
2959
2960 /* workaround: re-program speed mode bit after
2961 * link-up event */
2962 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
2963 !txb2b) {
2964 u32 tarc0;
2965 tarc0 = er32(TARC0);
2966 tarc0 &= ~SPEED_MODE_BIT;
2967 ew32(TARC0, tarc0);
2968 }
2969
2970 /* disable TSO for pcie and 10/100 speeds, to avoid
2971 * some hardware issues */
2972 if (!(adapter->flags & FLAG_TSO_FORCE)) {
2973 switch (adapter->link_speed) {
2974 case SPEED_10:
2975 case SPEED_100:
2976 ndev_info(netdev,
2977 "10/100 speed: disabling TSO\n");
2978 netdev->features &= ~NETIF_F_TSO;
2979 netdev->features &= ~NETIF_F_TSO6;
2980 break;
2981 case SPEED_1000:
2982 netdev->features |= NETIF_F_TSO;
2983 netdev->features |= NETIF_F_TSO6;
2984 break;
2985 default:
2986 /* oops */
2987 break;
2988 }
2989 }
2990
2991 /* enable transmits in the hardware, need to do this
2992 * after setting TARC0 */
2993 tctl = er32(TCTL);
2994 tctl |= E1000_TCTL_EN;
2995 ew32(TCTL, tctl);
2996
2997 netif_carrier_on(netdev);
2998 netif_wake_queue(netdev);
2999
3000 if (!test_bit(__E1000_DOWN, &adapter->state))
3001 mod_timer(&adapter->phy_info_timer,
3002 round_jiffies(jiffies + 2 * HZ));
3003 } else {
3004 /* make sure the receive unit is started */
3005 if (adapter->flags & FLAG_RX_NEEDS_RESTART) {
3006 u32 rctl = er32(RCTL);
3007 ew32(RCTL, rctl |
3008 E1000_RCTL_EN);
3009 }
3010 }
3011 } else {
3012 if (netif_carrier_ok(netdev)) {
3013 adapter->link_speed = 0;
3014 adapter->link_duplex = 0;
3015 ndev_info(netdev, "Link is Down\n");
3016 netif_carrier_off(netdev);
3017 netif_stop_queue(netdev);
3018 if (!test_bit(__E1000_DOWN, &adapter->state))
3019 mod_timer(&adapter->phy_info_timer,
3020 round_jiffies(jiffies + 2 * HZ));
3021
3022 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
3023 schedule_work(&adapter->reset_task);
3024 }
3025 }
3026
3027link_up:
3028 e1000e_update_stats(adapter);
3029
3030 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
3031 adapter->tpt_old = adapter->stats.tpt;
3032 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
3033 adapter->colc_old = adapter->stats.colc;
3034
3035 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
3036 adapter->gorcl_old = adapter->stats.gorcl;
3037 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
3038 adapter->gotcl_old = adapter->stats.gotcl;
3039
3040 e1000e_update_adaptive(&adapter->hw);
3041
3042 if (!netif_carrier_ok(netdev)) {
3043 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
3044 tx_ring->count);
3045 if (tx_pending) {
3046 /* We've lost link, so the controller stops DMA,
3047 * but we've got queued Tx work that's never going
3048 * to get done, so reset controller to flush Tx.
3049 * (Do the reset outside of interrupt context). */
3050 adapter->tx_timeout_count++;
3051 schedule_work(&adapter->reset_task);
3052 }
3053 }
3054
3055 /* Cause software interrupt to ensure rx ring is cleaned */
3056 ew32(ICS, E1000_ICS_RXDMT0);
3057
3058 /* Force detection of hung controller every watchdog period */
3059 adapter->detect_tx_hung = 1;
3060
3061 /* With 82571 controllers, LAA may be overwritten due to controller
3062 * reset from the other port. Set the appropriate LAA in RAR[0] */
3063 if (e1000e_get_laa_state_82571(hw))
3064 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
3065
3066 /* Reset the timer */
3067 if (!test_bit(__E1000_DOWN, &adapter->state))
3068 mod_timer(&adapter->watchdog_timer,
3069 round_jiffies(jiffies + 2 * HZ));
3070}
3071
3072#define E1000_TX_FLAGS_CSUM 0x00000001
3073#define E1000_TX_FLAGS_VLAN 0x00000002
3074#define E1000_TX_FLAGS_TSO 0x00000004
3075#define E1000_TX_FLAGS_IPV4 0x00000008
3076#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
3077#define E1000_TX_FLAGS_VLAN_SHIFT 16
3078
3079static int e1000_tso(struct e1000_adapter *adapter,
3080 struct sk_buff *skb)
3081{
3082 struct e1000_ring *tx_ring = adapter->tx_ring;
3083 struct e1000_context_desc *context_desc;
3084 struct e1000_buffer *buffer_info;
3085 unsigned int i;
3086 u32 cmd_length = 0;
3087 u16 ipcse = 0, tucse, mss;
3088 u8 ipcss, ipcso, tucss, tucso, hdr_len;
3089 int err;
3090
3091 if (skb_is_gso(skb)) {
3092 if (skb_header_cloned(skb)) {
3093 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
3094 if (err)
3095 return err;
3096 }
3097
3098 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3099 mss = skb_shinfo(skb)->gso_size;
3100 if (skb->protocol == htons(ETH_P_IP)) {
3101 struct iphdr *iph = ip_hdr(skb);
3102 iph->tot_len = 0;
3103 iph->check = 0;
3104 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
3105 iph->daddr, 0,
3106 IPPROTO_TCP,
3107 0);
3108 cmd_length = E1000_TXD_CMD_IP;
3109 ipcse = skb_transport_offset(skb) - 1;
3110 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
3111 ipv6_hdr(skb)->payload_len = 0;
3112 tcp_hdr(skb)->check =
3113 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3114 &ipv6_hdr(skb)->daddr,
3115 0, IPPROTO_TCP, 0);
3116 ipcse = 0;
3117 }
3118 ipcss = skb_network_offset(skb);
3119 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
3120 tucss = skb_transport_offset(skb);
3121 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
3122 tucse = 0;
3123
3124 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
3125 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
3126
3127 i = tx_ring->next_to_use;
3128 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3129 buffer_info = &tx_ring->buffer_info[i];
3130
3131 context_desc->lower_setup.ip_fields.ipcss = ipcss;
3132 context_desc->lower_setup.ip_fields.ipcso = ipcso;
3133 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
3134 context_desc->upper_setup.tcp_fields.tucss = tucss;
3135 context_desc->upper_setup.tcp_fields.tucso = tucso;
3136 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
3137 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
3138 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
3139 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
3140
3141 buffer_info->time_stamp = jiffies;
3142 buffer_info->next_to_watch = i;
3143
3144 i++;
3145 if (i == tx_ring->count)
3146 i = 0;
3147 tx_ring->next_to_use = i;
3148
3149 return 1;
3150 }
3151
3152 return 0;
3153}
3154
3155static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
3156{
3157 struct e1000_ring *tx_ring = adapter->tx_ring;
3158 struct e1000_context_desc *context_desc;
3159 struct e1000_buffer *buffer_info;
3160 unsigned int i;
3161 u8 css;
3162
3163 if (skb->ip_summed == CHECKSUM_PARTIAL) {
3164 css = skb_transport_offset(skb);
3165
3166 i = tx_ring->next_to_use;
3167 buffer_info = &tx_ring->buffer_info[i];
3168 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
3169
3170 context_desc->lower_setup.ip_config = 0;
3171 context_desc->upper_setup.tcp_fields.tucss = css;
3172 context_desc->upper_setup.tcp_fields.tucso =
3173 css + skb->csum_offset;
3174 context_desc->upper_setup.tcp_fields.tucse = 0;
3175 context_desc->tcp_seg_setup.data = 0;
3176 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
3177
3178 buffer_info->time_stamp = jiffies;
3179 buffer_info->next_to_watch = i;
3180
3181 i++;
3182 if (i == tx_ring->count)
3183 i = 0;
3184 tx_ring->next_to_use = i;
3185
3186 return 1;
3187 }
3188
3189 return 0;
3190}
3191
3192#define E1000_MAX_PER_TXD 8192
3193#define E1000_MAX_TXD_PWR 12
3194
3195static int e1000_tx_map(struct e1000_adapter *adapter,
3196 struct sk_buff *skb, unsigned int first,
3197 unsigned int max_per_txd, unsigned int nr_frags,
3198 unsigned int mss)
3199{
3200 struct e1000_ring *tx_ring = adapter->tx_ring;
3201 struct e1000_buffer *buffer_info;
3202 unsigned int len = skb->len - skb->data_len;
3203 unsigned int offset = 0, size, count = 0, i;
3204 unsigned int f;
3205
3206 i = tx_ring->next_to_use;
3207
3208 while (len) {
3209 buffer_info = &tx_ring->buffer_info[i];
3210 size = min(len, max_per_txd);
3211
3212 /* Workaround for premature desc write-backs
3213 * in TSO mode. Append 4-byte sentinel desc */
3214 if (mss && !nr_frags && size == len && size > 8)
3215 size -= 4;
3216
3217 buffer_info->length = size;
3218 /* set time_stamp *before* dma to help avoid a possible race */
3219 buffer_info->time_stamp = jiffies;
3220 buffer_info->dma =
3221 pci_map_single(adapter->pdev,
3222 skb->data + offset,
3223 size,
3224 PCI_DMA_TODEVICE);
3225 if (pci_dma_mapping_error(buffer_info->dma)) {
3226 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
3227 adapter->tx_dma_failed++;
3228 return -1;
3229 }
3230 buffer_info->next_to_watch = i;
3231
3232 len -= size;
3233 offset += size;
3234 count++;
3235 i++;
3236 if (i == tx_ring->count)
3237 i = 0;
3238 }
3239
3240 for (f = 0; f < nr_frags; f++) {
3241 struct skb_frag_struct *frag;
3242
3243 frag = &skb_shinfo(skb)->frags[f];
3244 len = frag->size;
3245 offset = frag->page_offset;
3246
3247 while (len) {
3248 buffer_info = &tx_ring->buffer_info[i];
3249 size = min(len, max_per_txd);
3250 /* Workaround for premature desc write-backs
3251 * in TSO mode. Append 4-byte sentinel desc */
3252 if (mss && f == (nr_frags-1) && size == len && size > 8)
3253 size -= 4;
3254
3255 buffer_info->length = size;
3256 buffer_info->time_stamp = jiffies;
3257 buffer_info->dma =
3258 pci_map_page(adapter->pdev,
3259 frag->page,
3260 offset,
3261 size,
3262 PCI_DMA_TODEVICE);
3263 if (pci_dma_mapping_error(buffer_info->dma)) {
3264 dev_err(&adapter->pdev->dev,
3265 "TX DMA page map failed\n");
3266 adapter->tx_dma_failed++;
3267 return -1;
3268 }
3269
3270 buffer_info->next_to_watch = i;
3271
3272 len -= size;
3273 offset += size;
3274 count++;
3275
3276 i++;
3277 if (i == tx_ring->count)
3278 i = 0;
3279 }
3280 }
3281
3282 if (i == 0)
3283 i = tx_ring->count - 1;
3284 else
3285 i--;
3286
3287 tx_ring->buffer_info[i].skb = skb;
3288 tx_ring->buffer_info[first].next_to_watch = i;
3289
3290 return count;
3291}
3292
3293static void e1000_tx_queue(struct e1000_adapter *adapter,
3294 int tx_flags, int count)
3295{
3296 struct e1000_ring *tx_ring = adapter->tx_ring;
3297 struct e1000_tx_desc *tx_desc = NULL;
3298 struct e1000_buffer *buffer_info;
3299 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3300 unsigned int i;
3301
3302 if (tx_flags & E1000_TX_FLAGS_TSO) {
3303 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3304 E1000_TXD_CMD_TSE;
3305 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3306
3307 if (tx_flags & E1000_TX_FLAGS_IPV4)
3308 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
3309 }
3310
3311 if (tx_flags & E1000_TX_FLAGS_CSUM) {
3312 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3313 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3314 }
3315
3316 if (tx_flags & E1000_TX_FLAGS_VLAN) {
3317 txd_lower |= E1000_TXD_CMD_VLE;
3318 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3319 }
3320
3321 i = tx_ring->next_to_use;
3322
3323 while (count--) {
3324 buffer_info = &tx_ring->buffer_info[i];
3325 tx_desc = E1000_TX_DESC(*tx_ring, i);
3326 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3327 tx_desc->lower.data =
3328 cpu_to_le32(txd_lower | buffer_info->length);
3329 tx_desc->upper.data = cpu_to_le32(txd_upper);
3330
3331 i++;
3332 if (i == tx_ring->count)
3333 i = 0;
3334 }
3335
3336 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3337
3338 /* Force memory writes to complete before letting h/w
3339 * know there are new descriptors to fetch. (Only
3340 * applicable for weak-ordered memory model archs,
3341 * such as IA-64). */
3342 wmb();
3343
3344 tx_ring->next_to_use = i;
3345 writel(i, adapter->hw.hw_addr + tx_ring->tail);
3346 /* we need this if more than one processor can write to our tail
3347 * at a time, it synchronizes IO on IA64/Altix systems */
3348 mmiowb();
3349}
3350
3351#define MINIMUM_DHCP_PACKET_SIZE 282
3352static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
3353 struct sk_buff *skb)
3354{
3355 struct e1000_hw *hw = &adapter->hw;
3356 u16 length, offset;
3357
3358 if (vlan_tx_tag_present(skb)) {
3359 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id)
3360 && (adapter->hw.mng_cookie.status &
3361 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
3362 return 0;
3363 }
3364
3365 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
3366 return 0;
3367
3368 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
3369 return 0;
3370
3371 {
3372 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
3373 struct udphdr *udp;
3374
3375 if (ip->protocol != IPPROTO_UDP)
3376 return 0;
3377
3378 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
3379 if (ntohs(udp->dest) != 67)
3380 return 0;
3381
3382 offset = (u8 *)udp + 8 - skb->data;
3383 length = skb->len - offset;
3384 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
3385 }
3386
3387 return 0;
3388}
3389
3390static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3391{
3392 struct e1000_adapter *adapter = netdev_priv(netdev);
3393
3394 netif_stop_queue(netdev);
3395 /* Herbert's original patch had:
3396 * smp_mb__after_netif_stop_queue();
3397 * but since that doesn't exist yet, just open code it. */
3398 smp_mb();
3399
3400 /* We need to check again in a case another CPU has just
3401 * made room available. */
3402 if (e1000_desc_unused(adapter->tx_ring) < size)
3403 return -EBUSY;
3404
3405 /* A reprieve! */
3406 netif_start_queue(netdev);
3407 ++adapter->restart_queue;
3408 return 0;
3409}
3410
3411static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
3412{
3413 struct e1000_adapter *adapter = netdev_priv(netdev);
3414
3415 if (e1000_desc_unused(adapter->tx_ring) >= size)
3416 return 0;
3417 return __e1000_maybe_stop_tx(netdev, size);
3418}
3419
3420#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3421static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3422{
3423 struct e1000_adapter *adapter = netdev_priv(netdev);
3424 struct e1000_ring *tx_ring = adapter->tx_ring;
3425 unsigned int first;
3426 unsigned int max_per_txd = E1000_MAX_PER_TXD;
3427 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3428 unsigned int tx_flags = 0;
3429 unsigned int len = skb->len;
3430 unsigned long irq_flags;
3431 unsigned int nr_frags = 0;
3432 unsigned int mss = 0;
3433 int count = 0;
3434 int tso;
3435 unsigned int f;
3436 len -= skb->data_len;
3437
3438 if (test_bit(__E1000_DOWN, &adapter->state)) {
3439 dev_kfree_skb_any(skb);
3440 return NETDEV_TX_OK;
3441 }
3442
3443 if (skb->len <= 0) {
3444 dev_kfree_skb_any(skb);
3445 return NETDEV_TX_OK;
3446 }
3447
3448 mss = skb_shinfo(skb)->gso_size;
3449 /* The controller does a simple calculation to
3450 * make sure there is enough room in the FIFO before
3451 * initiating the DMA for each buffer. The calc is:
3452 * 4 = ceil(buffer len/mss). To make sure we don't
3453 * overrun the FIFO, adjust the max buffer len if mss
3454 * drops. */
3455 if (mss) {
3456 u8 hdr_len;
3457 max_per_txd = min(mss << 2, max_per_txd);
3458 max_txd_pwr = fls(max_per_txd) - 1;
3459
3460 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3461 * points to just header, pull a few bytes of payload from
3462 * frags into skb->data */
3463 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3464 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {
3465 unsigned int pull_size;
3466
3467 pull_size = min((unsigned int)4, skb->data_len);
3468 if (!__pskb_pull_tail(skb, pull_size)) {
3469 ndev_err(netdev,
3470 "__pskb_pull_tail failed.\n");
3471 dev_kfree_skb_any(skb);
3472 return NETDEV_TX_OK;
3473 }
3474 len = skb->len - skb->data_len;
3475 }
3476 }
3477
3478 /* reserve a descriptor for the offload context */
3479 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3480 count++;
3481 count++;
3482
3483 count += TXD_USE_COUNT(len, max_txd_pwr);
3484
3485 nr_frags = skb_shinfo(skb)->nr_frags;
3486 for (f = 0; f < nr_frags; f++)
3487 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3488 max_txd_pwr);
3489
3490 if (adapter->hw.mac.tx_pkt_filtering)
3491 e1000_transfer_dhcp_info(adapter, skb);
3492
3493 if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags))
3494 /* Collision - tell upper layer to requeue */
3495 return NETDEV_TX_LOCKED;
3496
3497 /* need: count + 2 desc gap to keep tail from touching
3498 * head, otherwise try next time */
3499 if (e1000_maybe_stop_tx(netdev, count + 2)) {
3500 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3501 return NETDEV_TX_BUSY;
3502 }
3503
3504 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
3505 tx_flags |= E1000_TX_FLAGS_VLAN;
3506 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3507 }
3508
3509 first = tx_ring->next_to_use;
3510
3511 tso = e1000_tso(adapter, skb);
3512 if (tso < 0) {
3513 dev_kfree_skb_any(skb);
3514 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3515 return NETDEV_TX_OK;
3516 }
3517
3518 if (tso)
3519 tx_flags |= E1000_TX_FLAGS_TSO;
3520 else if (e1000_tx_csum(adapter, skb))
3521 tx_flags |= E1000_TX_FLAGS_CSUM;
3522
3523 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3524 * 82571 hardware supports TSO capabilities for IPv6 as well...
3525 * no longer assume, we must. */
3526 if (skb->protocol == htons(ETH_P_IP))
3527 tx_flags |= E1000_TX_FLAGS_IPV4;
3528
3529 count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
3530 if (count < 0) {
3531 /* handle pci_map_single() error in e1000_tx_map */
3532 dev_kfree_skb_any(skb);
3533 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3534 return NETDEV_TX_BUSY;
3535 }
3536
3537 e1000_tx_queue(adapter, tx_flags, count);
3538
3539 netdev->trans_start = jiffies;
3540
3541 /* Make sure there is space in the ring for the next send. */
3542 e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
3543
3544 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3545 return NETDEV_TX_OK;
3546}
3547
3548/**
3549 * e1000_tx_timeout - Respond to a Tx Hang
3550 * @netdev: network interface device structure
3551 **/
3552static void e1000_tx_timeout(struct net_device *netdev)
3553{
3554 struct e1000_adapter *adapter = netdev_priv(netdev);
3555
3556 /* Do the reset outside of interrupt context */
3557 adapter->tx_timeout_count++;
3558 schedule_work(&adapter->reset_task);
3559}
3560
3561static void e1000_reset_task(struct work_struct *work)
3562{
3563 struct e1000_adapter *adapter;
3564 adapter = container_of(work, struct e1000_adapter, reset_task);
3565
3566 e1000e_reinit_locked(adapter);
3567}
3568
3569/**
3570 * e1000_get_stats - Get System Network Statistics
3571 * @netdev: network interface device structure
3572 *
3573 * Returns the address of the device statistics structure.
3574 * The statistics are actually updated from the timer callback.
3575 **/
3576static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
3577{
3578 struct e1000_adapter *adapter = netdev_priv(netdev);
3579
3580 /* only return the current stats */
3581 return &adapter->net_stats;
3582}
3583
3584/**
3585 * e1000_change_mtu - Change the Maximum Transfer Unit
3586 * @netdev: network interface device structure
3587 * @new_mtu: new value for maximum frame size
3588 *
3589 * Returns 0 on success, negative on failure
3590 **/
3591static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
3592{
3593 struct e1000_adapter *adapter = netdev_priv(netdev);
3594 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3595
3596 if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
3597 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3598 ndev_err(netdev, "Invalid MTU setting\n");
3599 return -EINVAL;
3600 }
3601
3602 /* Jumbo frame size limits */
3603 if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) {
3604 if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
3605 ndev_err(netdev, "Jumbo Frames not supported.\n");
3606 return -EINVAL;
3607 }
3608 if (adapter->hw.phy.type == e1000_phy_ife) {
3609 ndev_err(netdev, "Jumbo Frames not supported.\n");
3610 return -EINVAL;
3611 }
3612 }
3613
3614#define MAX_STD_JUMBO_FRAME_SIZE 9234
3615 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3616 ndev_err(netdev, "MTU > 9216 not supported.\n");
3617 return -EINVAL;
3618 }
3619
3620 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3621 msleep(1);
3622 /* e1000e_down has a dependency on max_frame_size */
3623 adapter->hw.mac.max_frame_size = max_frame;
3624 if (netif_running(netdev))
3625 e1000e_down(adapter);
3626
3627 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3628 * means we reserve 2 more, this pushes us to allocate from the next
3629 * larger slab size.
3630 * i.e. RXBUFFER_2048 --> size-4096 slab
3631 * however with the new *_jumbo* routines, jumbo receives will use
3632 * fragmented skbs */
3633
3634 if (max_frame <= 256)
3635 adapter->rx_buffer_len = 256;
3636 else if (max_frame <= 512)
3637 adapter->rx_buffer_len = 512;
3638 else if (max_frame <= 1024)
3639 adapter->rx_buffer_len = 1024;
3640 else if (max_frame <= 2048)
3641 adapter->rx_buffer_len = 2048;
3642 else
3643 adapter->rx_buffer_len = 4096;
3644
3645 /* adjust allocation if LPE protects us, and we aren't using SBP */
3646 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
3647 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
3648 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
3649 + ETH_FCS_LEN ;
3650
3651 ndev_info(netdev, "changing MTU from %d to %d\n",
3652 netdev->mtu, new_mtu);
3653 netdev->mtu = new_mtu;
3654
3655 if (netif_running(netdev))
3656 e1000e_up(adapter);
3657 else
3658 e1000e_reset(adapter);
3659
3660 clear_bit(__E1000_RESETTING, &adapter->state);
3661
3662 return 0;
3663}
3664
3665static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
3666 int cmd)
3667{
3668 struct e1000_adapter *adapter = netdev_priv(netdev);
3669 struct mii_ioctl_data *data = if_mii(ifr);
3670 unsigned long irq_flags;
3671
3672 if (adapter->hw.media_type != e1000_media_type_copper)
3673 return -EOPNOTSUPP;
3674
3675 switch (cmd) {
3676 case SIOCGMIIPHY:
3677 data->phy_id = adapter->hw.phy.addr;
3678 break;
3679 case SIOCGMIIREG:
3680 if (!capable(CAP_NET_ADMIN))
3681 return -EPERM;
3682 spin_lock_irqsave(&adapter->stats_lock, irq_flags);
3683 if (e1e_rphy(&adapter->hw, data->reg_num & 0x1F,
3684 &data->val_out)) {
3685 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
3686 return -EIO;
3687 }
3688 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
3689 break;
3690 case SIOCSMIIREG:
3691 default:
3692 return -EOPNOTSUPP;
3693 }
3694 return 0;
3695}
3696
3697static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
3698{
3699 switch (cmd) {
3700 case SIOCGMIIPHY:
3701 case SIOCGMIIREG:
3702 case SIOCSMIIREG:
3703 return e1000_mii_ioctl(netdev, ifr, cmd);
3704 default:
3705 return -EOPNOTSUPP;
3706 }
3707}
3708
3709static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
3710{
3711 struct net_device *netdev = pci_get_drvdata(pdev);
3712 struct e1000_adapter *adapter = netdev_priv(netdev);
3713 struct e1000_hw *hw = &adapter->hw;
3714 u32 ctrl, ctrl_ext, rctl, status;
3715 u32 wufc = adapter->wol;
3716 int retval = 0;
3717
3718 netif_device_detach(netdev);
3719
3720 if (netif_running(netdev)) {
3721 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3722 e1000e_down(adapter);
3723 e1000_free_irq(adapter);
3724 }
3725
3726 retval = pci_save_state(pdev);
3727 if (retval)
3728 return retval;
3729
3730 status = er32(STATUS);
3731 if (status & E1000_STATUS_LU)
3732 wufc &= ~E1000_WUFC_LNKC;
3733
3734 if (wufc) {
3735 e1000_setup_rctl(adapter);
3736 e1000_set_multi(netdev);
3737
3738 /* turn on all-multi mode if wake on multicast is enabled */
3739 if (wufc & E1000_WUFC_MC) {
3740 rctl = er32(RCTL);
3741 rctl |= E1000_RCTL_MPE;
3742 ew32(RCTL, rctl);
3743 }
3744
3745 ctrl = er32(CTRL);
3746 /* advertise wake from D3Cold */
3747 #define E1000_CTRL_ADVD3WUC 0x00100000
3748 /* phy power management enable */
3749 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3750 ctrl |= E1000_CTRL_ADVD3WUC |
3751 E1000_CTRL_EN_PHY_PWR_MGMT;
3752 ew32(CTRL, ctrl);
3753
3754 if (adapter->hw.media_type == e1000_media_type_fiber ||
3755 adapter->hw.media_type == e1000_media_type_internal_serdes) {
3756 /* keep the laser running in D3 */
3757 ctrl_ext = er32(CTRL_EXT);
3758 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
3759 ew32(CTRL_EXT, ctrl_ext);
3760 }
3761
3762 /* Allow time for pending master requests to run */
3763 e1000e_disable_pcie_master(&adapter->hw);
3764
3765 ew32(WUC, E1000_WUC_PME_EN);
3766 ew32(WUFC, wufc);
3767 pci_enable_wake(pdev, PCI_D3hot, 1);
3768 pci_enable_wake(pdev, PCI_D3cold, 1);
3769 } else {
3770 ew32(WUC, 0);
3771 ew32(WUFC, 0);
3772 pci_enable_wake(pdev, PCI_D3hot, 0);
3773 pci_enable_wake(pdev, PCI_D3cold, 0);
3774 }
3775
3776 e1000_release_manageability(adapter);
3777
3778 /* make sure adapter isn't asleep if manageability is enabled */
3779 if (adapter->flags & FLAG_MNG_PT_ENABLED) {
3780 pci_enable_wake(pdev, PCI_D3hot, 1);
3781 pci_enable_wake(pdev, PCI_D3cold, 1);
3782 }
3783
3784 if (adapter->hw.phy.type == e1000_phy_igp_3)
3785 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
3786
3787 /* Release control of h/w to f/w. If f/w is AMT enabled, this
3788 * would have already happened in close and is redundant. */
3789 e1000_release_hw_control(adapter);
3790
3791 pci_disable_device(pdev);
3792
3793 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3794
3795 return 0;
3796}
3797
3798#ifdef CONFIG_PM
3799static int e1000_resume(struct pci_dev *pdev)
3800{
3801 struct net_device *netdev = pci_get_drvdata(pdev);
3802 struct e1000_adapter *adapter = netdev_priv(netdev);
3803 struct e1000_hw *hw = &adapter->hw;
3804 u32 err;
3805
3806 pci_set_power_state(pdev, PCI_D0);
3807 pci_restore_state(pdev);
3808 err = pci_enable_device(pdev);
3809 if (err) {
3810 dev_err(&pdev->dev,
3811 "Cannot enable PCI device from suspend\n");
3812 return err;
3813 }
3814
3815 pci_set_master(pdev);
3816
3817 pci_enable_wake(pdev, PCI_D3hot, 0);
3818 pci_enable_wake(pdev, PCI_D3cold, 0);
3819
3820 if (netif_running(netdev)) {
3821 err = e1000_request_irq(adapter);
3822 if (err)
3823 return err;
3824 }
3825
3826 e1000e_power_up_phy(adapter);
3827 e1000e_reset(adapter);
3828 ew32(WUS, ~0);
3829
3830 e1000_init_manageability(adapter);
3831
3832 if (netif_running(netdev))
3833 e1000e_up(adapter);
3834
3835 netif_device_attach(netdev);
3836
3837 /* If the controller has AMT, do not set DRV_LOAD until the interface
3838 * is up. For all other cases, let the f/w know that the h/w is now
3839 * under the control of the driver. */
3840 if (!(adapter->flags & FLAG_HAS_AMT) || !e1000e_check_mng_mode(&adapter->hw))
3841 e1000_get_hw_control(adapter);
3842
3843 return 0;
3844}
3845#endif
3846
3847static void e1000_shutdown(struct pci_dev *pdev)
3848{
3849 e1000_suspend(pdev, PMSG_SUSPEND);
3850}
3851
3852#ifdef CONFIG_NET_POLL_CONTROLLER
3853/*
3854 * Polling 'interrupt' - used by things like netconsole to send skbs
3855 * without having to re-enable interrupts. It's not called while
3856 * the interrupt routine is executing.
3857 */
3858static void e1000_netpoll(struct net_device *netdev)
3859{
3860 struct e1000_adapter *adapter = netdev_priv(netdev);
3861
3862 disable_irq(adapter->pdev->irq);
3863 e1000_intr(adapter->pdev->irq, netdev);
3864
3865 e1000_clean_tx_irq(adapter);
3866
3867 enable_irq(adapter->pdev->irq);
3868}
3869#endif
3870
3871/**
3872 * e1000_io_error_detected - called when PCI error is detected
3873 * @pdev: Pointer to PCI device
3874 * @state: The current pci connection state
3875 *
3876 * This function is called after a PCI bus error affecting
3877 * this device has been detected.
3878 */
3879static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
3880 pci_channel_state_t state)
3881{
3882 struct net_device *netdev = pci_get_drvdata(pdev);
3883 struct e1000_adapter *adapter = netdev_priv(netdev);
3884
3885 netif_device_detach(netdev);
3886
3887 if (netif_running(netdev))
3888 e1000e_down(adapter);
3889 pci_disable_device(pdev);
3890
3891 /* Request a slot slot reset. */
3892 return PCI_ERS_RESULT_NEED_RESET;
3893}
3894
3895/**
3896 * e1000_io_slot_reset - called after the pci bus has been reset.
3897 * @pdev: Pointer to PCI device
3898 *
3899 * Restart the card from scratch, as if from a cold-boot. Implementation
3900 * resembles the first-half of the e1000_resume routine.
3901 */
3902static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
3903{
3904 struct net_device *netdev = pci_get_drvdata(pdev);
3905 struct e1000_adapter *adapter = netdev_priv(netdev);
3906 struct e1000_hw *hw = &adapter->hw;
3907
3908 if (pci_enable_device(pdev)) {
3909 dev_err(&pdev->dev,
3910 "Cannot re-enable PCI device after reset.\n");
3911 return PCI_ERS_RESULT_DISCONNECT;
3912 }
3913 pci_set_master(pdev);
3914
3915 pci_enable_wake(pdev, PCI_D3hot, 0);
3916 pci_enable_wake(pdev, PCI_D3cold, 0);
3917
3918 e1000e_reset(adapter);
3919 ew32(WUS, ~0);
3920
3921 return PCI_ERS_RESULT_RECOVERED;
3922}
3923
3924/**
3925 * e1000_io_resume - called when traffic can start flowing again.
3926 * @pdev: Pointer to PCI device
3927 *
3928 * This callback is called when the error recovery driver tells us that
3929 * its OK to resume normal operation. Implementation resembles the
3930 * second-half of the e1000_resume routine.
3931 */
3932static void e1000_io_resume(struct pci_dev *pdev)
3933{
3934 struct net_device *netdev = pci_get_drvdata(pdev);
3935 struct e1000_adapter *adapter = netdev_priv(netdev);
3936
3937 e1000_init_manageability(adapter);
3938
3939 if (netif_running(netdev)) {
3940 if (e1000e_up(adapter)) {
3941 dev_err(&pdev->dev,
3942 "can't bring device back up after reset\n");
3943 return;
3944 }
3945 }
3946
3947 netif_device_attach(netdev);
3948
3949 /* If the controller has AMT, do not set DRV_LOAD until the interface
3950 * is up. For all other cases, let the f/w know that the h/w is now
3951 * under the control of the driver. */
3952 if (!(adapter->flags & FLAG_HAS_AMT) ||
3953 !e1000e_check_mng_mode(&adapter->hw))
3954 e1000_get_hw_control(adapter);
3955
3956}
3957
3958static void e1000_print_device_info(struct e1000_adapter *adapter)
3959{
3960 struct e1000_hw *hw = &adapter->hw;
3961 struct net_device *netdev = adapter->netdev;
3962 u32 part_num;
3963
3964 /* print bus type/speed/width info */
3965 ndev_info(netdev, "(PCI Express:2.5GB/s:%s) "
3966 "%02x:%02x:%02x:%02x:%02x:%02x\n",
3967 /* bus width */
3968 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
3969 "Width x1"),
3970 /* MAC address */
3971 netdev->dev_addr[0], netdev->dev_addr[1],
3972 netdev->dev_addr[2], netdev->dev_addr[3],
3973 netdev->dev_addr[4], netdev->dev_addr[5]);
3974 ndev_info(netdev, "Intel(R) PRO/%s Network Connection\n",
3975 (hw->phy.type == e1000_phy_ife)
3976 ? "10/100" : "1000");
3977 e1000e_read_part_num(hw, &part_num);
3978 ndev_info(netdev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
3979 hw->mac.type, hw->phy.type,
3980 (part_num >> 8), (part_num & 0xff));
3981}
3982
3983/**
3984 * e1000_probe - Device Initialization Routine
3985 * @pdev: PCI device information struct
3986 * @ent: entry in e1000_pci_tbl
3987 *
3988 * Returns 0 on success, negative on failure
3989 *
3990 * e1000_probe initializes an adapter identified by a pci_dev structure.
3991 * The OS initialization, configuring of the adapter private structure,
3992 * and a hardware reset occur.
3993 **/
3994static int __devinit e1000_probe(struct pci_dev *pdev,
3995 const struct pci_device_id *ent)
3996{
3997 struct net_device *netdev;
3998 struct e1000_adapter *adapter;
3999 struct e1000_hw *hw;
4000 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
4001 unsigned long mmio_start, mmio_len;
4002 unsigned long flash_start, flash_len;
4003
4004 static int cards_found;
4005 int i, err, pci_using_dac;
4006 u16 eeprom_data = 0;
4007 u16 eeprom_apme_mask = E1000_EEPROM_APME;
4008
4009 err = pci_enable_device(pdev);
4010 if (err)
4011 return err;
4012
4013 pci_using_dac = 0;
4014 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4015 if (!err) {
4016 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4017 if (!err)
4018 pci_using_dac = 1;
4019 } else {
4020 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4021 if (err) {
4022 err = pci_set_consistent_dma_mask(pdev,
4023 DMA_32BIT_MASK);
4024 if (err) {
4025 dev_err(&pdev->dev, "No usable DMA "
4026 "configuration, aborting\n");
4027 goto err_dma;
4028 }
4029 }
4030 }
4031
4032 err = pci_request_regions(pdev, e1000e_driver_name);
4033 if (err)
4034 goto err_pci_reg;
4035
4036 pci_set_master(pdev);
4037
4038 err = -ENOMEM;
4039 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
4040 if (!netdev)
4041 goto err_alloc_etherdev;
4042
4043 SET_MODULE_OWNER(netdev);
4044 SET_NETDEV_DEV(netdev, &pdev->dev);
4045
4046 pci_set_drvdata(pdev, netdev);
4047 adapter = netdev_priv(netdev);
4048 hw = &adapter->hw;
4049 adapter->netdev = netdev;
4050 adapter->pdev = pdev;
4051 adapter->ei = ei;
4052 adapter->pba = ei->pba;
4053 adapter->flags = ei->flags;
4054 adapter->hw.adapter = adapter;
4055 adapter->hw.mac.type = ei->mac;
4056 adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
4057
4058 mmio_start = pci_resource_start(pdev, 0);
4059 mmio_len = pci_resource_len(pdev, 0);
4060
4061 err = -EIO;
4062 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
4063 if (!adapter->hw.hw_addr)
4064 goto err_ioremap;
4065
4066 if ((adapter->flags & FLAG_HAS_FLASH) &&
4067 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
4068 flash_start = pci_resource_start(pdev, 1);
4069 flash_len = pci_resource_len(pdev, 1);
4070 adapter->hw.flash_address = ioremap(flash_start, flash_len);
4071 if (!adapter->hw.flash_address)
4072 goto err_flashmap;
4073 }
4074
4075 /* construct the net_device struct */
4076 netdev->open = &e1000_open;
4077 netdev->stop = &e1000_close;
4078 netdev->hard_start_xmit = &e1000_xmit_frame;
4079 netdev->get_stats = &e1000_get_stats;
4080 netdev->set_multicast_list = &e1000_set_multi;
4081 netdev->set_mac_address = &e1000_set_mac;
4082 netdev->change_mtu = &e1000_change_mtu;
4083 netdev->do_ioctl = &e1000_ioctl;
4084 e1000e_set_ethtool_ops(netdev);
4085 netdev->tx_timeout = &e1000_tx_timeout;
4086 netdev->watchdog_timeo = 5 * HZ;
4087 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
4088 netdev->vlan_rx_register = e1000_vlan_rx_register;
4089 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
4090 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
4091#ifdef CONFIG_NET_POLL_CONTROLLER
4092 netdev->poll_controller = e1000_netpoll;
4093#endif
4094 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
4095
4096 netdev->mem_start = mmio_start;
4097 netdev->mem_end = mmio_start + mmio_len;
4098
4099 adapter->bd_number = cards_found++;
4100
4101 /* setup adapter struct */
4102 err = e1000_sw_init(adapter);
4103 if (err)
4104 goto err_sw_init;
4105
4106 err = -EIO;
4107
4108 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
4109 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
4110 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
4111
4112 err = ei->get_invariants(adapter);
4113 if (err)
4114 goto err_hw_init;
4115
4116 hw->mac.ops.get_bus_info(&adapter->hw);
4117
4118 adapter->hw.phy.wait_for_link = 0;
4119
4120 /* Copper options */
4121 if (adapter->hw.media_type == e1000_media_type_copper) {
4122 adapter->hw.phy.mdix = AUTO_ALL_MODES;
4123 adapter->hw.phy.disable_polarity_correction = 0;
4124 adapter->hw.phy.ms_type = e1000_ms_hw_default;
4125 }
4126
4127 if (e1000_check_reset_block(&adapter->hw))
4128 ndev_info(netdev,
4129 "PHY reset is blocked due to SOL/IDER session.\n");
4130
4131 netdev->features = NETIF_F_SG |
4132 NETIF_F_HW_CSUM |
4133 NETIF_F_HW_VLAN_TX |
4134 NETIF_F_HW_VLAN_RX;
4135
4136 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
4137 netdev->features |= NETIF_F_HW_VLAN_FILTER;
4138
4139 netdev->features |= NETIF_F_TSO;
4140 netdev->features |= NETIF_F_TSO6;
4141
4142 if (pci_using_dac)
4143 netdev->features |= NETIF_F_HIGHDMA;
4144
4145 /* We should not be using LLTX anymore, but we are still TX faster with
4146 * it. */
4147 netdev->features |= NETIF_F_LLTX;
4148
4149 if (e1000e_enable_mng_pass_thru(&adapter->hw))
4150 adapter->flags |= FLAG_MNG_PT_ENABLED;
4151
4152 /* before reading the NVM, reset the controller to
4153 * put the device in a known good starting state */
4154 adapter->hw.mac.ops.reset_hw(&adapter->hw);
4155
4156 /*
4157 * systems with ASPM and others may see the checksum fail on the first
4158 * attempt. Let's give it a few tries
4159 */
4160 for (i = 0;; i++) {
4161 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
4162 break;
4163 if (i == 2) {
4164 ndev_err(netdev, "The NVM Checksum Is Not Valid\n");
4165 err = -EIO;
4166 goto err_eeprom;
4167 }
4168 }
4169
4170 /* copy the MAC address out of the NVM */
4171 if (e1000e_read_mac_addr(&adapter->hw))
4172 ndev_err(netdev, "NVM Read Error while reading MAC address\n");
4173
4174 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
4175 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
4176
4177 if (!is_valid_ether_addr(netdev->perm_addr)) {
4178 ndev_err(netdev, "Invalid MAC Address: "
4179 "%02x:%02x:%02x:%02x:%02x:%02x\n",
4180 netdev->perm_addr[0], netdev->perm_addr[1],
4181 netdev->perm_addr[2], netdev->perm_addr[3],
4182 netdev->perm_addr[4], netdev->perm_addr[5]);
4183 err = -EIO;
4184 goto err_eeprom;
4185 }
4186
4187 init_timer(&adapter->watchdog_timer);
4188 adapter->watchdog_timer.function = &e1000_watchdog;
4189 adapter->watchdog_timer.data = (unsigned long) adapter;
4190
4191 init_timer(&adapter->phy_info_timer);
4192 adapter->phy_info_timer.function = &e1000_update_phy_info;
4193 adapter->phy_info_timer.data = (unsigned long) adapter;
4194
4195 INIT_WORK(&adapter->reset_task, e1000_reset_task);
4196 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
4197
4198 e1000e_check_options(adapter);
4199
4200 /* Initialize link parameters. User can change them with ethtool */
4201 adapter->hw.mac.autoneg = 1;
4202 adapter->hw.mac.original_fc = e1000_fc_default;
4203 adapter->hw.mac.fc = e1000_fc_default;
4204 adapter->hw.phy.autoneg_advertised = 0x2f;
4205
4206 /* ring size defaults */
4207 adapter->rx_ring->count = 256;
4208 adapter->tx_ring->count = 256;
4209
4210 /*
4211 * Initial Wake on LAN setting - If APM wake is enabled in
4212 * the EEPROM, enable the ACPI Magic Packet filter
4213 */
4214 if (adapter->flags & FLAG_APME_IN_WUC) {
4215 /* APME bit in EEPROM is mapped to WUC.APME */
4216 eeprom_data = er32(WUC);
4217 eeprom_apme_mask = E1000_WUC_APME;
4218 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
4219 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
4220 (adapter->hw.bus.func == 1))
4221 e1000_read_nvm(&adapter->hw,
4222 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
4223 else
4224 e1000_read_nvm(&adapter->hw,
4225 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
4226 }
4227
4228 /* fetch WoL from EEPROM */
4229 if (eeprom_data & eeprom_apme_mask)
4230 adapter->eeprom_wol |= E1000_WUFC_MAG;
4231
4232 /*
4233 * now that we have the eeprom settings, apply the special cases
4234 * where the eeprom may be wrong or the board simply won't support
4235 * wake on lan on a particular port
4236 */
4237 if (!(adapter->flags & FLAG_HAS_WOL))
4238 adapter->eeprom_wol = 0;
4239
4240 /* initialize the wol settings based on the eeprom settings */
4241 adapter->wol = adapter->eeprom_wol;
4242
4243 /* reset the hardware with the new settings */
4244 e1000e_reset(adapter);
4245
4246 /* If the controller has AMT, do not set DRV_LOAD until the interface
4247 * is up. For all other cases, let the f/w know that the h/w is now
4248 * under the control of the driver. */
4249 if (!(adapter->flags & FLAG_HAS_AMT) ||
4250 !e1000e_check_mng_mode(&adapter->hw))
4251 e1000_get_hw_control(adapter);
4252
4253 /* tell the stack to leave us alone until e1000_open() is called */
4254 netif_carrier_off(netdev);
4255 netif_stop_queue(netdev);
4256
4257 strcpy(netdev->name, "eth%d");
4258 err = register_netdev(netdev);
4259 if (err)
4260 goto err_register;
4261
4262 e1000_print_device_info(adapter);
4263
4264 return 0;
4265
4266err_register:
4267err_hw_init:
4268 e1000_release_hw_control(adapter);
4269err_eeprom:
4270 if (!e1000_check_reset_block(&adapter->hw))
4271 e1000_phy_hw_reset(&adapter->hw);
4272
4273 if (adapter->hw.flash_address)
4274 iounmap(adapter->hw.flash_address);
4275
4276err_flashmap:
4277 kfree(adapter->tx_ring);
4278 kfree(adapter->rx_ring);
4279err_sw_init:
4280 iounmap(adapter->hw.hw_addr);
4281err_ioremap:
4282 free_netdev(netdev);
4283err_alloc_etherdev:
4284 pci_release_regions(pdev);
4285err_pci_reg:
4286err_dma:
4287 pci_disable_device(pdev);
4288 return err;
4289}
4290
4291/**
4292 * e1000_remove - Device Removal Routine
4293 * @pdev: PCI device information struct
4294 *
4295 * e1000_remove is called by the PCI subsystem to alert the driver
4296 * that it should release a PCI device. The could be caused by a
4297 * Hot-Plug event, or because the driver is going to be removed from
4298 * memory.
4299 **/
4300static void __devexit e1000_remove(struct pci_dev *pdev)
4301{
4302 struct net_device *netdev = pci_get_drvdata(pdev);
4303 struct e1000_adapter *adapter = netdev_priv(netdev);
4304
4305 /* flush_scheduled work may reschedule our watchdog task, so
4306 * explicitly disable watchdog tasks from being rescheduled */
4307 set_bit(__E1000_DOWN, &adapter->state);
4308 del_timer_sync(&adapter->watchdog_timer);
4309 del_timer_sync(&adapter->phy_info_timer);
4310
4311 flush_scheduled_work();
4312
4313 e1000_release_manageability(adapter);
4314
4315 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4316 * would have already happened in close and is redundant. */
4317 e1000_release_hw_control(adapter);
4318
4319 unregister_netdev(netdev);
4320
4321 if (!e1000_check_reset_block(&adapter->hw))
4322 e1000_phy_hw_reset(&adapter->hw);
4323
4324 kfree(adapter->tx_ring);
4325 kfree(adapter->rx_ring);
4326
4327 iounmap(adapter->hw.hw_addr);
4328 if (adapter->hw.flash_address)
4329 iounmap(adapter->hw.flash_address);
4330 pci_release_regions(pdev);
4331
4332 free_netdev(netdev);
4333
4334 pci_disable_device(pdev);
4335}
4336
4337/* PCI Error Recovery (ERS) */
4338static struct pci_error_handlers e1000_err_handler = {
4339 .error_detected = e1000_io_error_detected,
4340 .slot_reset = e1000_io_slot_reset,
4341 .resume = e1000_io_resume,
4342};
4343
4344static struct pci_device_id e1000_pci_tbl[] = {
4345 /*
4346 * Support for 82571/2/3, es2lan and ich8 will be phased in
4347 * stepwise.
4348
4349 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
4350 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
4351 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
4352 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
4353 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
4354 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
4355 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
4356 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
4357 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
4358 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
4359 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
4360 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
4361 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
4362 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
4363 board_80003es2lan },
4364 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
4365 board_80003es2lan },
4366 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
4367 board_80003es2lan },
4368 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
4369 board_80003es2lan },
4370 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
4371 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
4372 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
4373 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
4374 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
4375 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
4376 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
4377 */
4378
4379 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
4380 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
4381 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
4382 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
4383 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
4384
4385 { } /* terminate list */
4386};
4387MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
4388
4389/* PCI Device API Driver */
4390static struct pci_driver e1000_driver = {
4391 .name = e1000e_driver_name,
4392 .id_table = e1000_pci_tbl,
4393 .probe = e1000_probe,
4394 .remove = __devexit_p(e1000_remove),
4395#ifdef CONFIG_PM
4396 /* Power Managment Hooks */
4397 .suspend = e1000_suspend,
4398 .resume = e1000_resume,
4399#endif
4400 .shutdown = e1000_shutdown,
4401 .err_handler = &e1000_err_handler
4402};
4403
4404/**
4405 * e1000_init_module - Driver Registration Routine
4406 *
4407 * e1000_init_module is the first routine called when the driver is
4408 * loaded. All it does is register with the PCI subsystem.
4409 **/
4410static int __init e1000_init_module(void)
4411{
4412 int ret;
4413 printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n",
4414 e1000e_driver_name, e1000e_driver_version);
4415 printk(KERN_INFO "%s: Copyright (c) 1999-2007 Intel Corporation.\n",
4416 e1000e_driver_name);
4417 ret = pci_register_driver(&e1000_driver);
4418
4419 return ret;
4420}
4421module_init(e1000_init_module);
4422
4423/**
4424 * e1000_exit_module - Driver Exit Cleanup Routine
4425 *
4426 * e1000_exit_module is called just before the driver is removed
4427 * from memory.
4428 **/
4429static void __exit e1000_exit_module(void)
4430{
4431 pci_unregister_driver(&e1000_driver);
4432}
4433module_exit(e1000_exit_module);
4434
4435
4436MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
4437MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
4438MODULE_LICENSE("GPL");
4439MODULE_VERSION(DRV_VERSION);
4440
4441/* e1000_main.c */
diff --git a/drivers/net/e1000e/param.c b/drivers/net/e1000e/param.c
new file mode 100644
index 000000000000..e4e655efb23c
--- /dev/null
+++ b/drivers/net/e1000e/param.c
@@ -0,0 +1,382 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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#include <linux/netdevice.h>
30
31#include "e1000.h"
32
33/* This is the only thing that needs to be changed to adjust the
34 * maximum number of ports that the driver can manage.
35 */
36
37#define E1000_MAX_NIC 32
38
39#define OPTION_UNSET -1
40#define OPTION_DISABLED 0
41#define OPTION_ENABLED 1
42
43#define COPYBREAK_DEFAULT 256
44unsigned int copybreak = COPYBREAK_DEFAULT;
45module_param(copybreak, uint, 0644);
46MODULE_PARM_DESC(copybreak,
47 "Maximum size of packet that is copied to a new buffer on receive");
48
49/* All parameters are treated the same, as an integer array of values.
50 * This macro just reduces the need to repeat the same declaration code
51 * over and over (plus this helps to avoid typo bugs).
52 */
53
54#define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET }
55#define E1000_PARAM(X, desc) \
56 static int __devinitdata X[E1000_MAX_NIC+1] = E1000_PARAM_INIT; \
57 static int num_##X; \
58 module_param_array_named(X, X, int, &num_##X, 0); \
59 MODULE_PARM_DESC(X, desc);
60
61
62/* Transmit Interrupt Delay in units of 1.024 microseconds
63 * Tx interrupt delay needs to typically be set to something non zero
64 *
65 * Valid Range: 0-65535
66 */
67E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay");
68#define DEFAULT_TIDV 8
69#define MAX_TXDELAY 0xFFFF
70#define MIN_TXDELAY 0
71
72/* Transmit Absolute Interrupt Delay in units of 1.024 microseconds
73 *
74 * Valid Range: 0-65535
75 */
76E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay");
77#define DEFAULT_TADV 32
78#define MAX_TXABSDELAY 0xFFFF
79#define MIN_TXABSDELAY 0
80
81/* Receive Interrupt Delay in units of 1.024 microseconds
82 * hardware will likely hang if you set this to anything but zero.
83 *
84 * Valid Range: 0-65535
85 */
86E1000_PARAM(RxIntDelay, "Receive Interrupt Delay");
87#define DEFAULT_RDTR 0
88#define MAX_RXDELAY 0xFFFF
89#define MIN_RXDELAY 0
90
91/* Receive Absolute Interrupt Delay in units of 1.024 microseconds
92 *
93 * Valid Range: 0-65535
94 */
95E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
96#define DEFAULT_RADV 8
97#define MAX_RXABSDELAY 0xFFFF
98#define MIN_RXABSDELAY 0
99
100/* Interrupt Throttle Rate (interrupts/sec)
101 *
102 * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
103 */
104E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
105#define DEFAULT_ITR 3
106#define MAX_ITR 100000
107#define MIN_ITR 100
108
109/* Enable Smart Power Down of the PHY
110 *
111 * Valid Range: 0, 1
112 *
113 * Default Value: 0 (disabled)
114 */
115E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
116
117/* Enable Kumeran Lock Loss workaround
118 *
119 * Valid Range: 0, 1
120 *
121 * Default Value: 1 (enabled)
122 */
123E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround");
124
125struct e1000_option {
126 enum { enable_option, range_option, list_option } type;
127 char *name;
128 char *err;
129 int def;
130 union {
131 struct { /* range_option info */
132 int min;
133 int max;
134 } r;
135 struct { /* list_option info */
136 int nr;
137 struct e1000_opt_list { int i; char *str; } *p;
138 } l;
139 } arg;
140};
141
142static int __devinit e1000_validate_option(int *value,
143 struct e1000_option *opt,
144 struct e1000_adapter *adapter)
145{
146 if (*value == OPTION_UNSET) {
147 *value = opt->def;
148 return 0;
149 }
150
151 switch (opt->type) {
152 case enable_option:
153 switch (*value) {
154 case OPTION_ENABLED:
155 ndev_info(adapter->netdev, "%s Enabled\n", opt->name);
156 return 0;
157 case OPTION_DISABLED:
158 ndev_info(adapter->netdev, "%s Disabled\n", opt->name);
159 return 0;
160 }
161 break;
162 case range_option:
163 if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
164 ndev_info(adapter->netdev,
165 "%s set to %i\n", opt->name, *value);
166 return 0;
167 }
168 break;
169 case list_option: {
170 int i;
171 struct e1000_opt_list *ent;
172
173 for (i = 0; i < opt->arg.l.nr; i++) {
174 ent = &opt->arg.l.p[i];
175 if (*value == ent->i) {
176 if (ent->str[0] != '\0')
177 ndev_info(adapter->netdev, "%s\n",
178 ent->str);
179 return 0;
180 }
181 }
182 }
183 break;
184 default:
185 BUG();
186 }
187
188 ndev_info(adapter->netdev, "Invalid %s value specified (%i) %s\n",
189 opt->name, *value, opt->err);
190 *value = opt->def;
191 return -1;
192}
193
194/**
195 * e1000e_check_options - Range Checking for Command Line Parameters
196 * @adapter: board private structure
197 *
198 * This routine checks all command line parameters for valid user
199 * input. If an invalid value is given, or if no user specified
200 * value exists, a default value is used. The final value is stored
201 * in a variable in the adapter structure.
202 **/
203void __devinit e1000e_check_options(struct e1000_adapter *adapter)
204{
205 struct e1000_hw *hw = &adapter->hw;
206 struct net_device *netdev = adapter->netdev;
207 int bd = adapter->bd_number;
208
209 if (bd >= E1000_MAX_NIC) {
210 ndev_notice(netdev,
211 "Warning: no configuration for board #%i\n", bd);
212 ndev_notice(netdev, "Using defaults for all values\n");
213 }
214
215 { /* Transmit Interrupt Delay */
216 struct e1000_option opt = {
217 .type = range_option,
218 .name = "Transmit Interrupt Delay",
219 .err = "using default of "
220 __MODULE_STRING(DEFAULT_TIDV),
221 .def = DEFAULT_TIDV,
222 .arg = { .r = { .min = MIN_TXDELAY,
223 .max = MAX_TXDELAY } }
224 };
225
226 if (num_TxIntDelay > bd) {
227 adapter->tx_int_delay = TxIntDelay[bd];
228 e1000_validate_option(&adapter->tx_int_delay, &opt,
229 adapter);
230 } else {
231 adapter->tx_int_delay = opt.def;
232 }
233 }
234 { /* Transmit Absolute Interrupt Delay */
235 struct e1000_option opt = {
236 .type = range_option,
237 .name = "Transmit Absolute Interrupt Delay",
238 .err = "using default of "
239 __MODULE_STRING(DEFAULT_TADV),
240 .def = DEFAULT_TADV,
241 .arg = { .r = { .min = MIN_TXABSDELAY,
242 .max = MAX_TXABSDELAY } }
243 };
244
245 if (num_TxAbsIntDelay > bd) {
246 adapter->tx_abs_int_delay = TxAbsIntDelay[bd];
247 e1000_validate_option(&adapter->tx_abs_int_delay, &opt,
248 adapter);
249 } else {
250 adapter->tx_abs_int_delay = opt.def;
251 }
252 }
253 { /* Receive Interrupt Delay */
254 struct e1000_option opt = {
255 .type = range_option,
256 .name = "Receive Interrupt Delay",
257 .err = "using default of "
258 __MODULE_STRING(DEFAULT_RDTR),
259 .def = DEFAULT_RDTR,
260 .arg = { .r = { .min = MIN_RXDELAY,
261 .max = MAX_RXDELAY } }
262 };
263
264 /* modify min and default if 82573 for slow ping w/a,
265 * a value greater than 8 needs to be set for RDTR */
266 if (adapter->flags & FLAG_HAS_ASPM) {
267 opt.def = 32;
268 opt.arg.r.min = 8;
269 }
270
271 if (num_RxIntDelay > bd) {
272 adapter->rx_int_delay = RxIntDelay[bd];
273 e1000_validate_option(&adapter->rx_int_delay, &opt,
274 adapter);
275 } else {
276 adapter->rx_int_delay = opt.def;
277 }
278 }
279 { /* Receive Absolute Interrupt Delay */
280 struct e1000_option opt = {
281 .type = range_option,
282 .name = "Receive Absolute Interrupt Delay",
283 .err = "using default of "
284 __MODULE_STRING(DEFAULT_RADV),
285 .def = DEFAULT_RADV,
286 .arg = { .r = { .min = MIN_RXABSDELAY,
287 .max = MAX_RXABSDELAY } }
288 };
289
290 if (num_RxAbsIntDelay > bd) {
291 adapter->rx_abs_int_delay = RxAbsIntDelay[bd];
292 e1000_validate_option(&adapter->rx_abs_int_delay, &opt,
293 adapter);
294 } else {
295 adapter->rx_abs_int_delay = opt.def;
296 }
297 }
298 { /* Interrupt Throttling Rate */
299 struct e1000_option opt = {
300 .type = range_option,
301 .name = "Interrupt Throttling Rate (ints/sec)",
302 .err = "using default of "
303 __MODULE_STRING(DEFAULT_ITR),
304 .def = DEFAULT_ITR,
305 .arg = { .r = { .min = MIN_ITR,
306 .max = MAX_ITR } }
307 };
308
309 if (num_InterruptThrottleRate > bd) {
310 adapter->itr = InterruptThrottleRate[bd];
311 switch (adapter->itr) {
312 case 0:
313 ndev_info(netdev, "%s turned off\n",
314 opt.name);
315 break;
316 case 1:
317 ndev_info(netdev,
318 "%s set to dynamic mode\n",
319 opt.name);
320 adapter->itr_setting = adapter->itr;
321 adapter->itr = 20000;
322 break;
323 case 3:
324 ndev_info(netdev,
325 "%s set to dynamic conservative mode\n",
326 opt.name);
327 adapter->itr_setting = adapter->itr;
328 adapter->itr = 20000;
329 break;
330 default:
331 e1000_validate_option(&adapter->itr, &opt,
332 adapter);
333 /*
334 * save the setting, because the dynamic bits
335 * change itr. clear the lower two bits
336 * because they are used as control
337 */
338 adapter->itr_setting = adapter->itr & ~3;
339 break;
340 }
341 } else {
342 adapter->itr_setting = opt.def;
343 adapter->itr = 20000;
344 }
345 }
346 { /* Smart Power Down */
347 struct e1000_option opt = {
348 .type = enable_option,
349 .name = "PHY Smart Power Down",
350 .err = "defaulting to Disabled",
351 .def = OPTION_DISABLED
352 };
353
354 if (num_SmartPowerDownEnable > bd) {
355 int spd = SmartPowerDownEnable[bd];
356 e1000_validate_option(&spd, &opt, adapter);
357 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN)
358 && spd)
359 adapter->flags |= FLAG_SMART_POWER_DOWN;
360 }
361 }
362 { /* Kumeran Lock Loss Workaround */
363 struct e1000_option opt = {
364 .type = enable_option,
365 .name = "Kumeran Lock Loss Workaround",
366 .err = "defaulting to Enabled",
367 .def = OPTION_ENABLED
368 };
369
370 if (num_KumeranLockLoss > bd) {
371 int kmrn_lock_loss = KumeranLockLoss[bd];
372 e1000_validate_option(&kmrn_lock_loss, &opt, adapter);
373 if (hw->mac.type == e1000_ich8lan)
374 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw,
375 kmrn_lock_loss);
376 } else {
377 if (hw->mac.type == e1000_ich8lan)
378 e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw,
379 opt.def);
380 }
381 }
382}
diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c
new file mode 100644
index 000000000000..793231810ae0
--- /dev/null
+++ b/drivers/net/e1000e/phy.c
@@ -0,0 +1,1773 @@
1/*******************************************************************************
2
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2007 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#include <linux/delay.h>
30
31#include "e1000.h"
32
33static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw);
34static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw);
35static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active);
36static s32 e1000_wait_autoneg(struct e1000_hw *hw);
37
38/* Cable length tables */
39static const u16 e1000_m88_cable_length_table[] =
40 { 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED };
41
42static const u16 e1000_igp_2_cable_length_table[] =
43 { 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, 0, 0, 0, 3,
44 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, 6, 10, 14, 18, 22,
45 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, 21, 26, 31, 35, 40,
46 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, 40, 45, 51, 56, 61,
47 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, 60, 66, 72, 77, 82,
48 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, 83, 89, 95,
49 100, 105, 109, 113, 116, 119, 122, 124, 104, 109, 114, 118, 121,
50 124};
51#define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \
52 (sizeof(e1000_igp_2_cable_length_table) / \
53 sizeof(e1000_igp_2_cable_length_table[0]))
54
55/**
56 * e1000e_check_reset_block_generic - Check if PHY reset is blocked
57 * @hw: pointer to the HW structure
58 *
59 * Read the PHY management control register and check whether a PHY reset
60 * is blocked. If a reset is not blocked return 0, otherwise
61 * return E1000_BLK_PHY_RESET (12).
62 **/
63s32 e1000e_check_reset_block_generic(struct e1000_hw *hw)
64{
65 u32 manc;
66
67 manc = er32(MANC);
68
69 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
70 E1000_BLK_PHY_RESET : 0;
71}
72
73/**
74 * e1000e_get_phy_id - Retrieve the PHY ID and revision
75 * @hw: pointer to the HW structure
76 *
77 * Reads the PHY registers and stores the PHY ID and possibly the PHY
78 * revision in the hardware structure.
79 **/
80s32 e1000e_get_phy_id(struct e1000_hw *hw)
81{
82 struct e1000_phy_info *phy = &hw->phy;
83 s32 ret_val;
84 u16 phy_id;
85
86 ret_val = e1e_rphy(hw, PHY_ID1, &phy_id);
87 if (ret_val)
88 return ret_val;
89
90 phy->id = (u32)(phy_id << 16);
91 udelay(20);
92 ret_val = e1e_rphy(hw, PHY_ID2, &phy_id);
93 if (ret_val)
94 return ret_val;
95
96 phy->id |= (u32)(phy_id & PHY_REVISION_MASK);
97 phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
98
99 return 0;
100}
101
102/**
103 * e1000e_phy_reset_dsp - Reset PHY DSP
104 * @hw: pointer to the HW structure
105 *
106 * Reset the digital signal processor.
107 **/
108s32 e1000e_phy_reset_dsp(struct e1000_hw *hw)
109{
110 s32 ret_val;
111
112 ret_val = e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0xC1);
113 if (ret_val)
114 return ret_val;
115
116 return e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0);
117}
118
119/**
120 * e1000_read_phy_reg_mdic - Read MDI control register
121 * @hw: pointer to the HW structure
122 * @offset: register offset to be read
123 * @data: pointer to the read data
124 *
125 * Reads the MDI control regsiter in the PHY at offset and stores the
126 * information read to data.
127 **/
128static s32 e1000_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
129{
130 struct e1000_phy_info *phy = &hw->phy;
131 u32 i, mdic = 0;
132
133 if (offset > MAX_PHY_REG_ADDRESS) {
134 hw_dbg(hw, "PHY Address %d is out of range\n", offset);
135 return -E1000_ERR_PARAM;
136 }
137
138 /* Set up Op-code, Phy Address, and register offset in the MDI
139 * Control register. The MAC will take care of interfacing with the
140 * PHY to retrieve the desired data.
141 */
142 mdic = ((offset << E1000_MDIC_REG_SHIFT) |
143 (phy->addr << E1000_MDIC_PHY_SHIFT) |
144 (E1000_MDIC_OP_READ));
145
146 ew32(MDIC, mdic);
147
148 /* Poll the ready bit to see if the MDI read completed */
149 for (i = 0; i < 64; i++) {
150 udelay(50);
151 mdic = er32(MDIC);
152 if (mdic & E1000_MDIC_READY)
153 break;
154 }
155 if (!(mdic & E1000_MDIC_READY)) {
156 hw_dbg(hw, "MDI Read did not complete\n");
157 return -E1000_ERR_PHY;
158 }
159 if (mdic & E1000_MDIC_ERROR) {
160 hw_dbg(hw, "MDI Error\n");
161 return -E1000_ERR_PHY;
162 }
163 *data = (u16) mdic;
164
165 return 0;
166}
167
168/**
169 * e1000_write_phy_reg_mdic - Write MDI control register
170 * @hw: pointer to the HW structure
171 * @offset: register offset to write to
172 * @data: data to write to register at offset
173 *
174 * Writes data to MDI control register in the PHY at offset.
175 **/
176static s32 e1000_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
177{
178 struct e1000_phy_info *phy = &hw->phy;
179 u32 i, mdic = 0;
180
181 if (offset > MAX_PHY_REG_ADDRESS) {
182 hw_dbg(hw, "PHY Address %d is out of range\n", offset);
183 return -E1000_ERR_PARAM;
184 }
185
186 /* Set up Op-code, Phy Address, and register offset in the MDI
187 * Control register. The MAC will take care of interfacing with the
188 * PHY to retrieve the desired data.
189 */
190 mdic = (((u32)data) |
191 (offset << E1000_MDIC_REG_SHIFT) |
192 (phy->addr << E1000_MDIC_PHY_SHIFT) |
193 (E1000_MDIC_OP_WRITE));
194
195 ew32(MDIC, mdic);
196
197 /* Poll the ready bit to see if the MDI read completed */
198 for (i = 0; i < E1000_GEN_POLL_TIMEOUT; i++) {
199 udelay(5);
200 mdic = er32(MDIC);
201 if (mdic & E1000_MDIC_READY)
202 break;
203 }
204 if (!(mdic & E1000_MDIC_READY)) {
205 hw_dbg(hw, "MDI Write did not complete\n");
206 return -E1000_ERR_PHY;
207 }
208
209 return 0;
210}
211
212/**
213 * e1000e_read_phy_reg_m88 - Read m88 PHY register
214 * @hw: pointer to the HW structure
215 * @offset: register offset to be read
216 * @data: pointer to the read data
217 *
218 * Acquires semaphore, if necessary, then reads the PHY register at offset
219 * and storing the retrieved information in data. Release any acquired
220 * semaphores before exiting.
221 **/
222s32 e1000e_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data)
223{
224 s32 ret_val;
225
226 ret_val = hw->phy.ops.acquire_phy(hw);
227 if (ret_val)
228 return ret_val;
229
230 ret_val = e1000_read_phy_reg_mdic(hw,
231 MAX_PHY_REG_ADDRESS & offset,
232 data);
233
234 hw->phy.ops.release_phy(hw);
235
236 return ret_val;
237}
238
239/**
240 * e1000e_write_phy_reg_m88 - Write m88 PHY register
241 * @hw: pointer to the HW structure
242 * @offset: register offset to write to
243 * @data: data to write at register offset
244 *
245 * Acquires semaphore, if necessary, then writes the data to PHY register
246 * at the offset. Release any acquired semaphores before exiting.
247 **/
248s32 e1000e_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data)
249{
250 s32 ret_val;
251
252 ret_val = hw->phy.ops.acquire_phy(hw);
253 if (ret_val)
254 return ret_val;
255
256 ret_val = e1000_write_phy_reg_mdic(hw,
257 MAX_PHY_REG_ADDRESS & offset,
258 data);
259
260 hw->phy.ops.release_phy(hw);
261
262 return ret_val;
263}
264
265/**
266 * e1000e_read_phy_reg_igp - Read igp PHY register
267 * @hw: pointer to the HW structure
268 * @offset: register offset to be read
269 * @data: pointer to the read data
270 *
271 * Acquires semaphore, if necessary, then reads the PHY register at offset
272 * and storing the retrieved information in data. Release any acquired
273 * semaphores before exiting.
274 **/
275s32 e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data)
276{
277 s32 ret_val;
278
279 ret_val = hw->phy.ops.acquire_phy(hw);
280 if (ret_val)
281 return ret_val;
282
283 if (offset > MAX_PHY_MULTI_PAGE_REG) {
284 ret_val = e1000_write_phy_reg_mdic(hw,
285 IGP01E1000_PHY_PAGE_SELECT,
286 (u16)offset);
287 if (ret_val) {
288 hw->phy.ops.release_phy(hw);
289 return ret_val;
290 }
291 }
292
293 ret_val = e1000_read_phy_reg_mdic(hw,
294 MAX_PHY_REG_ADDRESS & offset,
295 data);
296
297 hw->phy.ops.release_phy(hw);
298
299 return ret_val;
300}
301
302/**
303 * e1000e_write_phy_reg_igp - Write igp PHY register
304 * @hw: pointer to the HW structure
305 * @offset: register offset to write to
306 * @data: data to write at register offset
307 *
308 * Acquires semaphore, if necessary, then writes the data to PHY register
309 * at the offset. Release any acquired semaphores before exiting.
310 **/
311s32 e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data)
312{
313 s32 ret_val;
314
315 ret_val = hw->phy.ops.acquire_phy(hw);
316 if (ret_val)
317 return ret_val;
318
319 if (offset > MAX_PHY_MULTI_PAGE_REG) {
320 ret_val = e1000_write_phy_reg_mdic(hw,
321 IGP01E1000_PHY_PAGE_SELECT,
322 (u16)offset);
323 if (ret_val) {
324 hw->phy.ops.release_phy(hw);
325 return ret_val;
326 }
327 }
328
329 ret_val = e1000_write_phy_reg_mdic(hw,
330 MAX_PHY_REG_ADDRESS & offset,
331 data);
332
333 hw->phy.ops.release_phy(hw);
334
335 return ret_val;
336}
337
338/**
339 * e1000e_read_kmrn_reg - Read kumeran register
340 * @hw: pointer to the HW structure
341 * @offset: register offset to be read
342 * @data: pointer to the read data
343 *
344 * Acquires semaphore, if necessary. Then reads the PHY register at offset
345 * using the kumeran interface. The information retrieved is stored in data.
346 * Release any acquired semaphores before exiting.
347 **/
348s32 e1000e_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data)
349{
350 u32 kmrnctrlsta;
351 s32 ret_val;
352
353 ret_val = hw->phy.ops.acquire_phy(hw);
354 if (ret_val)
355 return ret_val;
356
357 kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
358 E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN;
359 ew32(KMRNCTRLSTA, kmrnctrlsta);
360
361 udelay(2);
362
363 kmrnctrlsta = er32(KMRNCTRLSTA);
364 *data = (u16)kmrnctrlsta;
365
366 hw->phy.ops.release_phy(hw);
367
368 return ret_val;
369}
370
371/**
372 * e1000e_write_kmrn_reg - Write kumeran register
373 * @hw: pointer to the HW structure
374 * @offset: register offset to write to
375 * @data: data to write at register offset
376 *
377 * Acquires semaphore, if necessary. Then write the data to PHY register
378 * at the offset using the kumeran interface. Release any acquired semaphores
379 * before exiting.
380 **/
381s32 e1000e_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data)
382{
383 u32 kmrnctrlsta;
384 s32 ret_val;
385
386 ret_val = hw->phy.ops.acquire_phy(hw);
387 if (ret_val)
388 return ret_val;
389
390 kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
391 E1000_KMRNCTRLSTA_OFFSET) | data;
392 ew32(KMRNCTRLSTA, kmrnctrlsta);
393
394 udelay(2);
395 hw->phy.ops.release_phy(hw);
396
397 return ret_val;
398}
399
400/**
401 * e1000e_copper_link_setup_m88 - Setup m88 PHY's for copper link
402 * @hw: pointer to the HW structure
403 *
404 * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock
405 * and downshift values are set also.
406 **/
407s32 e1000e_copper_link_setup_m88(struct e1000_hw *hw)
408{
409 struct e1000_phy_info *phy = &hw->phy;
410 s32 ret_val;
411 u16 phy_data;
412
413 /* Enable CRS on TX. This must be set for half-duplex operation. */
414 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
415 if (ret_val)
416 return ret_val;
417
418 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
419
420 /* Options:
421 * MDI/MDI-X = 0 (default)
422 * 0 - Auto for all speeds
423 * 1 - MDI mode
424 * 2 - MDI-X mode
425 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
426 */
427 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
428
429 switch (phy->mdix) {
430 case 1:
431 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
432 break;
433 case 2:
434 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
435 break;
436 case 3:
437 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
438 break;
439 case 0:
440 default:
441 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
442 break;
443 }
444
445 /* Options:
446 * disable_polarity_correction = 0 (default)
447 * Automatic Correction for Reversed Cable Polarity
448 * 0 - Disabled
449 * 1 - Enabled
450 */
451 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
452 if (phy->disable_polarity_correction == 1)
453 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
454
455 ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
456 if (ret_val)
457 return ret_val;
458
459 if (phy->revision < 4) {
460 /* Force TX_CLK in the Extended PHY Specific Control Register
461 * to 25MHz clock.
462 */
463 ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
464 if (ret_val)
465 return ret_val;
466
467 phy_data |= M88E1000_EPSCR_TX_CLK_25;
468
469 if ((phy->revision == 2) &&
470 (phy->id == M88E1111_I_PHY_ID)) {
471 /* 82573L PHY - set the downshift counter to 5x. */
472 phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK;
473 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
474 } else {
475 /* Configure Master and Slave downshift values */
476 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
477 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
478 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
479 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
480 }
481 ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
482 if (ret_val)
483 return ret_val;
484 }
485
486 /* Commit the changes. */
487 ret_val = e1000e_commit_phy(hw);
488 if (ret_val)
489 hw_dbg(hw, "Error committing the PHY changes\n");
490
491 return ret_val;
492}
493
494/**
495 * e1000e_copper_link_setup_igp - Setup igp PHY's for copper link
496 * @hw: pointer to the HW structure
497 *
498 * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for
499 * igp PHY's.
500 **/
501s32 e1000e_copper_link_setup_igp(struct e1000_hw *hw)
502{
503 struct e1000_phy_info *phy = &hw->phy;
504 s32 ret_val;
505 u16 data;
506
507 ret_val = e1000_phy_hw_reset(hw);
508 if (ret_val) {
509 hw_dbg(hw, "Error resetting the PHY.\n");
510 return ret_val;
511 }
512
513 /* Wait 15ms for MAC to configure PHY from NVM settings. */
514 msleep(15);
515
516 /* disable lplu d0 during driver init */
517 ret_val = e1000_set_d0_lplu_state(hw, 0);
518 if (ret_val) {
519 hw_dbg(hw, "Error Disabling LPLU D0\n");
520 return ret_val;
521 }
522 /* Configure mdi-mdix settings */
523 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &data);
524 if (ret_val)
525 return ret_val;
526
527 data &= ~IGP01E1000_PSCR_AUTO_MDIX;
528
529 switch (phy->mdix) {
530 case 1:
531 data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
532 break;
533 case 2:
534 data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
535 break;
536 case 0:
537 default:
538 data |= IGP01E1000_PSCR_AUTO_MDIX;
539 break;
540 }
541 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, data);
542 if (ret_val)
543 return ret_val;
544
545 /* set auto-master slave resolution settings */
546 if (hw->mac.autoneg) {
547 /* when autonegotiation advertisement is only 1000Mbps then we
548 * should disable SmartSpeed and enable Auto MasterSlave
549 * resolution as hardware default. */
550 if (phy->autoneg_advertised == ADVERTISE_1000_FULL) {
551 /* Disable SmartSpeed */
552 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
553 &data);
554 if (ret_val)
555 return ret_val;
556
557 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
558 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
559 data);
560 if (ret_val)
561 return ret_val;
562
563 /* Set auto Master/Slave resolution process */
564 ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data);
565 if (ret_val)
566 return ret_val;
567
568 data &= ~CR_1000T_MS_ENABLE;
569 ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data);
570 if (ret_val)
571 return ret_val;
572 }
573
574 ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data);
575 if (ret_val)
576 return ret_val;
577
578 /* load defaults for future use */
579 phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ?
580 ((data & CR_1000T_MS_VALUE) ?
581 e1000_ms_force_master :
582 e1000_ms_force_slave) :
583 e1000_ms_auto;
584
585 switch (phy->ms_type) {
586 case e1000_ms_force_master:
587 data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
588 break;
589 case e1000_ms_force_slave:
590 data |= CR_1000T_MS_ENABLE;
591 data &= ~(CR_1000T_MS_VALUE);
592 break;
593 case e1000_ms_auto:
594 data &= ~CR_1000T_MS_ENABLE;
595 default:
596 break;
597 }
598 ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data);
599 }
600
601 return ret_val;
602}
603
604/**
605 * e1000_phy_setup_autoneg - Configure PHY for auto-negotiation
606 * @hw: pointer to the HW structure
607 *
608 * Reads the MII auto-neg advertisement register and/or the 1000T control
609 * register and if the PHY is already setup for auto-negotiation, then
610 * return successful. Otherwise, setup advertisement and flow control to
611 * the appropriate values for the wanted auto-negotiation.
612 **/
613static s32 e1000_phy_setup_autoneg(struct e1000_hw *hw)
614{
615 struct e1000_phy_info *phy = &hw->phy;
616 s32 ret_val;
617 u16 mii_autoneg_adv_reg;
618 u16 mii_1000t_ctrl_reg = 0;
619
620 phy->autoneg_advertised &= phy->autoneg_mask;
621
622 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
623 ret_val = e1e_rphy(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
624 if (ret_val)
625 return ret_val;
626
627 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
628 /* Read the MII 1000Base-T Control Register (Address 9). */
629 ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
630 if (ret_val)
631 return ret_val;
632 }
633
634 /* Need to parse both autoneg_advertised and fc and set up
635 * the appropriate PHY registers. First we will parse for
636 * autoneg_advertised software override. Since we can advertise
637 * a plethora of combinations, we need to check each bit
638 * individually.
639 */
640
641 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
642 * Advertisement Register (Address 4) and the 1000 mb speed bits in
643 * the 1000Base-T Control Register (Address 9).
644 */
645 mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS |
646 NWAY_AR_100TX_HD_CAPS |
647 NWAY_AR_10T_FD_CAPS |
648 NWAY_AR_10T_HD_CAPS);
649 mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS);
650
651 hw_dbg(hw, "autoneg_advertised %x\n", phy->autoneg_advertised);
652
653 /* Do we want to advertise 10 Mb Half Duplex? */
654 if (phy->autoneg_advertised & ADVERTISE_10_HALF) {
655 hw_dbg(hw, "Advertise 10mb Half duplex\n");
656 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
657 }
658
659 /* Do we want to advertise 10 Mb Full Duplex? */
660 if (phy->autoneg_advertised & ADVERTISE_10_FULL) {
661 hw_dbg(hw, "Advertise 10mb Full duplex\n");
662 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
663 }
664
665 /* Do we want to advertise 100 Mb Half Duplex? */
666 if (phy->autoneg_advertised & ADVERTISE_100_HALF) {
667 hw_dbg(hw, "Advertise 100mb Half duplex\n");
668 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
669 }
670
671 /* Do we want to advertise 100 Mb Full Duplex? */
672 if (phy->autoneg_advertised & ADVERTISE_100_FULL) {
673 hw_dbg(hw, "Advertise 100mb Full duplex\n");
674 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
675 }
676
677 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
678 if (phy->autoneg_advertised & ADVERTISE_1000_HALF)
679 hw_dbg(hw, "Advertise 1000mb Half duplex request denied!\n");
680
681 /* Do we want to advertise 1000 Mb Full Duplex? */
682 if (phy->autoneg_advertised & ADVERTISE_1000_FULL) {
683 hw_dbg(hw, "Advertise 1000mb Full duplex\n");
684 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
685 }
686
687 /* Check for a software override of the flow control settings, and
688 * setup the PHY advertisement registers accordingly. If
689 * auto-negotiation is enabled, then software will have to set the
690 * "PAUSE" bits to the correct value in the Auto-Negotiation
691 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-
692 * negotiation.
693 *
694 * The possible values of the "fc" parameter are:
695 * 0: Flow control is completely disabled
696 * 1: Rx flow control is enabled (we can receive pause frames
697 * but not send pause frames).
698 * 2: Tx flow control is enabled (we can send pause frames
699 * but we do not support receiving pause frames).
700 * 3: Both Rx and TX flow control (symmetric) are enabled.
701 * other: No software override. The flow control configuration
702 * in the EEPROM is used.
703 */
704 switch (hw->mac.fc) {
705 case e1000_fc_none:
706 /* Flow control (RX & TX) is completely disabled by a
707 * software over-ride.
708 */
709 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
710 break;
711 case e1000_fc_rx_pause:
712 /* RX Flow control is enabled, and TX Flow control is
713 * disabled, by a software over-ride.
714 */
715 /* Since there really isn't a way to advertise that we are
716 * capable of RX Pause ONLY, we will advertise that we
717 * support both symmetric and asymmetric RX PAUSE. Later
718 * (in e1000e_config_fc_after_link_up) we will disable the
719 * hw's ability to send PAUSE frames.
720 */
721 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
722 break;
723 case e1000_fc_tx_pause:
724 /* TX Flow control is enabled, and RX Flow control is
725 * disabled, by a software over-ride.
726 */
727 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
728 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
729 break;
730 case e1000_fc_full:
731 /* Flow control (both RX and TX) is enabled by a software
732 * over-ride.
733 */
734 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
735 break;
736 default:
737 hw_dbg(hw, "Flow control param set incorrectly\n");
738 ret_val = -E1000_ERR_CONFIG;
739 return ret_val;
740 }
741
742 ret_val = e1e_wphy(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
743 if (ret_val)
744 return ret_val;
745
746 hw_dbg(hw, "Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
747
748 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
749 ret_val = e1e_wphy(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg);
750 }
751
752 return ret_val;
753}
754
755/**
756 * e1000_copper_link_autoneg - Setup/Enable autoneg for copper link
757 * @hw: pointer to the HW structure
758 *
759 * Performs initial bounds checking on autoneg advertisement parameter, then
760 * configure to advertise the full capability. Setup the PHY to autoneg
761 * and restart the negotiation process between the link partner. If
762 * wait_for_link, then wait for autoneg to complete before exiting.
763 **/
764static s32 e1000_copper_link_autoneg(struct e1000_hw *hw)
765{
766 struct e1000_phy_info *phy = &hw->phy;
767 s32 ret_val;
768 u16 phy_ctrl;
769
770 /* Perform some bounds checking on the autoneg advertisement
771 * parameter.
772 */
773 phy->autoneg_advertised &= phy->autoneg_mask;
774
775 /* If autoneg_advertised is zero, we assume it was not defaulted
776 * by the calling code so we set to advertise full capability.
777 */
778 if (phy->autoneg_advertised == 0)
779 phy->autoneg_advertised = phy->autoneg_mask;
780
781 hw_dbg(hw, "Reconfiguring auto-neg advertisement params\n");
782 ret_val = e1000_phy_setup_autoneg(hw);
783 if (ret_val) {
784 hw_dbg(hw, "Error Setting up Auto-Negotiation\n");
785 return ret_val;
786 }
787 hw_dbg(hw, "Restarting Auto-Neg\n");
788
789 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
790 * the Auto Neg Restart bit in the PHY control register.
791 */
792 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl);
793 if (ret_val)
794 return ret_val;
795
796 phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
797 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl);
798 if (ret_val)
799 return ret_val;
800
801 /* Does the user want to wait for Auto-Neg to complete here, or
802 * check at a later time (for example, callback routine).
803 */
804 if (phy->wait_for_link) {
805 ret_val = e1000_wait_autoneg(hw);
806 if (ret_val) {
807 hw_dbg(hw, "Error while waiting for "
808 "autoneg to complete\n");
809 return ret_val;
810 }
811 }
812
813 hw->mac.get_link_status = 1;
814
815 return ret_val;
816}
817
818/**
819 * e1000e_setup_copper_link - Configure copper link settings
820 * @hw: pointer to the HW structure
821 *
822 * Calls the appropriate function to configure the link for auto-neg or forced
823 * speed and duplex. Then we check for link, once link is established calls
824 * to configure collision distance and flow control are called. If link is
825 * not established, we return -E1000_ERR_PHY (-2).
826 **/
827s32 e1000e_setup_copper_link(struct e1000_hw *hw)
828{
829 s32 ret_val;
830 bool link;
831
832 if (hw->mac.autoneg) {
833 /* Setup autoneg and flow control advertisement and perform
834 * autonegotiation. */
835 ret_val = e1000_copper_link_autoneg(hw);
836 if (ret_val)
837 return ret_val;
838 } else {
839 /* PHY will be set to 10H, 10F, 100H or 100F
840 * depending on user settings. */
841 hw_dbg(hw, "Forcing Speed and Duplex\n");
842 ret_val = e1000_phy_force_speed_duplex(hw);
843 if (ret_val) {
844 hw_dbg(hw, "Error Forcing Speed and Duplex\n");
845 return ret_val;
846 }
847 }
848
849 /* Check link status. Wait up to 100 microseconds for link to become
850 * valid.
851 */
852 ret_val = e1000e_phy_has_link_generic(hw,
853 COPPER_LINK_UP_LIMIT,
854 10,
855 &link);
856 if (ret_val)
857 return ret_val;
858
859 if (link) {
860 hw_dbg(hw, "Valid link established!!!\n");
861 e1000e_config_collision_dist(hw);
862 ret_val = e1000e_config_fc_after_link_up(hw);
863 } else {
864 hw_dbg(hw, "Unable to establish link!!!\n");
865 }
866
867 return ret_val;
868}
869
870/**
871 * e1000e_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY
872 * @hw: pointer to the HW structure
873 *
874 * Calls the PHY setup function to force speed and duplex. Clears the
875 * auto-crossover to force MDI manually. Waits for link and returns
876 * successful if link up is successful, else -E1000_ERR_PHY (-2).
877 **/
878s32 e1000e_phy_force_speed_duplex_igp(struct e1000_hw *hw)
879{
880 struct e1000_phy_info *phy = &hw->phy;
881 s32 ret_val;
882 u16 phy_data;
883 bool link;
884
885 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
886 if (ret_val)
887 return ret_val;
888
889 e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
890
891 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
892 if (ret_val)
893 return ret_val;
894
895 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI
896 * forced whenever speed and duplex are forced.
897 */
898 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
899 if (ret_val)
900 return ret_val;
901
902 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
903 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
904
905 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
906 if (ret_val)
907 return ret_val;
908
909 hw_dbg(hw, "IGP PSCR: %X\n", phy_data);
910
911 udelay(1);
912
913 if (phy->wait_for_link) {
914 hw_dbg(hw, "Waiting for forced speed/duplex link on IGP phy.\n");
915
916 ret_val = e1000e_phy_has_link_generic(hw,
917 PHY_FORCE_LIMIT,
918 100000,
919 &link);
920 if (ret_val)
921 return ret_val;
922
923 if (!link)
924 hw_dbg(hw, "Link taking longer than expected.\n");
925
926 /* Try once more */
927 ret_val = e1000e_phy_has_link_generic(hw,
928 PHY_FORCE_LIMIT,
929 100000,
930 &link);
931 if (ret_val)
932 return ret_val;
933 }
934
935 return ret_val;
936}
937
938/**
939 * e1000e_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY
940 * @hw: pointer to the HW structure
941 *
942 * Calls the PHY setup function to force speed and duplex. Clears the
943 * auto-crossover to force MDI manually. Resets the PHY to commit the
944 * changes. If time expires while waiting for link up, we reset the DSP.
945 * After reset, TX_CLK and CRS on TX must be set. Return successful upon
946 * successful completion, else return corresponding error code.
947 **/
948s32 e1000e_phy_force_speed_duplex_m88(struct e1000_hw *hw)
949{
950 struct e1000_phy_info *phy = &hw->phy;
951 s32 ret_val;
952 u16 phy_data;
953 bool link;
954
955 /* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI
956 * forced whenever speed and duplex are forced.
957 */
958 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
959 if (ret_val)
960 return ret_val;
961
962 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
963 ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
964 if (ret_val)
965 return ret_val;
966
967 hw_dbg(hw, "M88E1000 PSCR: %X\n", phy_data);
968
969 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
970 if (ret_val)
971 return ret_val;
972
973 e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
974
975 /* Reset the phy to commit changes. */
976 phy_data |= MII_CR_RESET;
977
978 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
979 if (ret_val)
980 return ret_val;
981
982 udelay(1);
983
984 if (phy->wait_for_link) {
985 hw_dbg(hw, "Waiting for forced speed/duplex link on M88 phy.\n");
986
987 ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
988 100000, &link);
989 if (ret_val)
990 return ret_val;
991
992 if (!link) {
993 /* We didn't get link.
994 * Reset the DSP and cross our fingers.
995 */
996 ret_val = e1e_wphy(hw, M88E1000_PHY_PAGE_SELECT, 0x001d);
997 if (ret_val)
998 return ret_val;
999 ret_val = e1000e_phy_reset_dsp(hw);
1000 if (ret_val)
1001 return ret_val;
1002 }
1003
1004 /* Try once more */
1005 ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
1006 100000, &link);
1007 if (ret_val)
1008 return ret_val;
1009 }
1010
1011 ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1012 if (ret_val)
1013 return ret_val;
1014
1015 /* Resetting the phy means we need to re-force TX_CLK in the
1016 * Extended PHY Specific Control Register to 25MHz clock from
1017 * the reset value of 2.5MHz.
1018 */
1019 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1020 ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1021 if (ret_val)
1022 return ret_val;
1023
1024 /* In addition, we must re-enable CRS on Tx for both half and full
1025 * duplex.
1026 */
1027 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1028 if (ret_val)
1029 return ret_val;
1030
1031 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1032 ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1033
1034 return ret_val;
1035}
1036
1037/**
1038 * e1000e_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex
1039 * @hw: pointer to the HW structure
1040 * @phy_ctrl: pointer to current value of PHY_CONTROL
1041 *
1042 * Forces speed and duplex on the PHY by doing the following: disable flow
1043 * control, force speed/duplex on the MAC, disable auto speed detection,
1044 * disable auto-negotiation, configure duplex, configure speed, configure
1045 * the collision distance, write configuration to CTRL register. The
1046 * caller must write to the PHY_CONTROL register for these settings to
1047 * take affect.
1048 **/
1049void e1000e_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl)
1050{
1051 struct e1000_mac_info *mac = &hw->mac;
1052 u32 ctrl;
1053
1054 /* Turn off flow control when forcing speed/duplex */
1055 mac->fc = e1000_fc_none;
1056
1057 /* Force speed/duplex on the mac */
1058 ctrl = er32(CTRL);
1059 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1060 ctrl &= ~E1000_CTRL_SPD_SEL;
1061
1062 /* Disable Auto Speed Detection */
1063 ctrl &= ~E1000_CTRL_ASDE;
1064
1065 /* Disable autoneg on the phy */
1066 *phy_ctrl &= ~MII_CR_AUTO_NEG_EN;
1067
1068 /* Forcing Full or Half Duplex? */
1069 if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) {
1070 ctrl &= ~E1000_CTRL_FD;
1071 *phy_ctrl &= ~MII_CR_FULL_DUPLEX;
1072 hw_dbg(hw, "Half Duplex\n");
1073 } else {
1074 ctrl |= E1000_CTRL_FD;
1075 *phy_ctrl |= MII_CR_FULL_DUPLEX;
1076 hw_dbg(hw, "Full Duplex\n");
1077 }
1078
1079 /* Forcing 10mb or 100mb? */
1080 if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) {
1081 ctrl |= E1000_CTRL_SPD_100;
1082 *phy_ctrl |= MII_CR_SPEED_100;
1083 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1084 hw_dbg(hw, "Forcing 100mb\n");
1085 } else {
1086 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1087 *phy_ctrl |= MII_CR_SPEED_10;
1088 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1089 hw_dbg(hw, "Forcing 10mb\n");
1090 }
1091
1092 e1000e_config_collision_dist(hw);
1093
1094 ew32(CTRL, ctrl);
1095}
1096
1097/**
1098 * e1000e_set_d3_lplu_state - Sets low power link up state for D3
1099 * @hw: pointer to the HW structure
1100 * @active: boolean used to enable/disable lplu
1101 *
1102 * Success returns 0, Failure returns 1
1103 *
1104 * The low power link up (lplu) state is set to the power management level D3
1105 * and SmartSpeed is disabled when active is true, else clear lplu for D3
1106 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1107 * is used during Dx states where the power conservation is most important.
1108 * During driver activity, SmartSpeed should be enabled so performance is
1109 * maintained.
1110 **/
1111s32 e1000e_set_d3_lplu_state(struct e1000_hw *hw, bool active)
1112{
1113 struct e1000_phy_info *phy = &hw->phy;
1114 s32 ret_val;
1115 u16 data;
1116
1117 ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
1118 if (ret_val)
1119 return ret_val;
1120
1121 if (!active) {
1122 data &= ~IGP02E1000_PM_D3_LPLU;
1123 ret_val = e1e_wphy(hw,
1124 IGP02E1000_PHY_POWER_MGMT,
1125 data);
1126 if (ret_val)
1127 return ret_val;
1128 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1129 * during Dx states where the power conservation is most
1130 * important. During driver activity we should enable
1131 * SmartSpeed, so performance is maintained. */
1132 if (phy->smart_speed == e1000_smart_speed_on) {
1133 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
1134 &data);
1135 if (ret_val)
1136 return ret_val;
1137
1138 data |= IGP01E1000_PSCFR_SMART_SPEED;
1139 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
1140 data);
1141 if (ret_val)
1142 return ret_val;
1143 } else if (phy->smart_speed == e1000_smart_speed_off) {
1144 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
1145 &data);
1146 if (ret_val)
1147 return ret_val;
1148
1149 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1150 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
1151 data);
1152 if (ret_val)
1153 return ret_val;
1154 }
1155 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1156 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1157 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1158 data |= IGP02E1000_PM_D3_LPLU;
1159 ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
1160 if (ret_val)
1161 return ret_val;
1162
1163 /* When LPLU is enabled, we should disable SmartSpeed */
1164 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
1165 if (ret_val)
1166 return ret_val;
1167
1168 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1169 ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
1170 }
1171
1172 return ret_val;
1173}
1174
1175/**
1176 * e1000e_check_downshift - Checks whether a downshift in speed occured
1177 * @hw: pointer to the HW structure
1178 *
1179 * Success returns 0, Failure returns 1
1180 *
1181 * A downshift is detected by querying the PHY link health.
1182 **/
1183s32 e1000e_check_downshift(struct e1000_hw *hw)
1184{
1185 struct e1000_phy_info *phy = &hw->phy;
1186 s32 ret_val;
1187 u16 phy_data, offset, mask;
1188
1189 switch (phy->type) {
1190 case e1000_phy_m88:
1191 case e1000_phy_gg82563:
1192 offset = M88E1000_PHY_SPEC_STATUS;
1193 mask = M88E1000_PSSR_DOWNSHIFT;
1194 break;
1195 case e1000_phy_igp_2:
1196 case e1000_phy_igp_3:
1197 offset = IGP01E1000_PHY_LINK_HEALTH;
1198 mask = IGP01E1000_PLHR_SS_DOWNGRADE;
1199 break;
1200 default:
1201 /* speed downshift not supported */
1202 phy->speed_downgraded = 0;
1203 return 0;
1204 }
1205
1206 ret_val = e1e_rphy(hw, offset, &phy_data);
1207
1208 if (!ret_val)
1209 phy->speed_downgraded = (phy_data & mask);
1210
1211 return ret_val;
1212}
1213
1214/**
1215 * e1000_check_polarity_m88 - Checks the polarity.
1216 * @hw: pointer to the HW structure
1217 *
1218 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1219 *
1220 * Polarity is determined based on the PHY specific status register.
1221 **/
1222static s32 e1000_check_polarity_m88(struct e1000_hw *hw)
1223{
1224 struct e1000_phy_info *phy = &hw->phy;
1225 s32 ret_val;
1226 u16 data;
1227
1228 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &data);
1229
1230 if (!ret_val)
1231 phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY)
1232 ? e1000_rev_polarity_reversed
1233 : e1000_rev_polarity_normal;
1234
1235 return ret_val;
1236}
1237
1238/**
1239 * e1000_check_polarity_igp - Checks the polarity.
1240 * @hw: pointer to the HW structure
1241 *
1242 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1243 *
1244 * Polarity is determined based on the PHY port status register, and the
1245 * current speed (since there is no polarity at 100Mbps).
1246 **/
1247static s32 e1000_check_polarity_igp(struct e1000_hw *hw)
1248{
1249 struct e1000_phy_info *phy = &hw->phy;
1250 s32 ret_val;
1251 u16 data, offset, mask;
1252
1253 /* Polarity is determined based on the speed of
1254 * our connection. */
1255 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data);
1256 if (ret_val)
1257 return ret_val;
1258
1259 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
1260 IGP01E1000_PSSR_SPEED_1000MBPS) {
1261 offset = IGP01E1000_PHY_PCS_INIT_REG;
1262 mask = IGP01E1000_PHY_POLARITY_MASK;
1263 } else {
1264 /* This really only applies to 10Mbps since
1265 * there is no polarity for 100Mbps (always 0).
1266 */
1267 offset = IGP01E1000_PHY_PORT_STATUS;
1268 mask = IGP01E1000_PSSR_POLARITY_REVERSED;
1269 }
1270
1271 ret_val = e1e_rphy(hw, offset, &data);
1272
1273 if (!ret_val)
1274 phy->cable_polarity = (data & mask)
1275 ? e1000_rev_polarity_reversed
1276 : e1000_rev_polarity_normal;
1277
1278 return ret_val;
1279}
1280
1281/**
1282 * e1000_wait_autoneg - Wait for auto-neg compeletion
1283 * @hw: pointer to the HW structure
1284 *
1285 * Waits for auto-negotiation to complete or for the auto-negotiation time
1286 * limit to expire, which ever happens first.
1287 **/
1288static s32 e1000_wait_autoneg(struct e1000_hw *hw)
1289{
1290 s32 ret_val = 0;
1291 u16 i, phy_status;
1292
1293 /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */
1294 for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) {
1295 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1296 if (ret_val)
1297 break;
1298 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1299 if (ret_val)
1300 break;
1301 if (phy_status & MII_SR_AUTONEG_COMPLETE)
1302 break;
1303 msleep(100);
1304 }
1305
1306 /* PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation
1307 * has completed.
1308 */
1309 return ret_val;
1310}
1311
1312/**
1313 * e1000e_phy_has_link_generic - Polls PHY for link
1314 * @hw: pointer to the HW structure
1315 * @iterations: number of times to poll for link
1316 * @usec_interval: delay between polling attempts
1317 * @success: pointer to whether polling was successful or not
1318 *
1319 * Polls the PHY status register for link, 'iterations' number of times.
1320 **/
1321s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
1322 u32 usec_interval, bool *success)
1323{
1324 s32 ret_val = 0;
1325 u16 i, phy_status;
1326
1327 for (i = 0; i < iterations; i++) {
1328 /* Some PHYs require the PHY_STATUS register to be read
1329 * twice due to the link bit being sticky. No harm doing
1330 * it across the board.
1331 */
1332 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1333 if (ret_val)
1334 break;
1335 ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
1336 if (ret_val)
1337 break;
1338 if (phy_status & MII_SR_LINK_STATUS)
1339 break;
1340 if (usec_interval >= 1000)
1341 mdelay(usec_interval/1000);
1342 else
1343 udelay(usec_interval);
1344 }
1345
1346 *success = (i < iterations);
1347
1348 return ret_val;
1349}
1350
1351/**
1352 * e1000e_get_cable_length_m88 - Determine cable length for m88 PHY
1353 * @hw: pointer to the HW structure
1354 *
1355 * Reads the PHY specific status register to retrieve the cable length
1356 * information. The cable length is determined by averaging the minimum and
1357 * maximum values to get the "average" cable length. The m88 PHY has four
1358 * possible cable length values, which are:
1359 * Register Value Cable Length
1360 * 0 < 50 meters
1361 * 1 50 - 80 meters
1362 * 2 80 - 110 meters
1363 * 3 110 - 140 meters
1364 * 4 > 140 meters
1365 **/
1366s32 e1000e_get_cable_length_m88(struct e1000_hw *hw)
1367{
1368 struct e1000_phy_info *phy = &hw->phy;
1369 s32 ret_val;
1370 u16 phy_data, index;
1371
1372 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1373 if (ret_val)
1374 return ret_val;
1375
1376 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
1377 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
1378 phy->min_cable_length = e1000_m88_cable_length_table[index];
1379 phy->max_cable_length = e1000_m88_cable_length_table[index+1];
1380
1381 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1382
1383 return ret_val;
1384}
1385
1386/**
1387 * e1000e_get_cable_length_igp_2 - Determine cable length for igp2 PHY
1388 * @hw: pointer to the HW structure
1389 *
1390 * The automatic gain control (agc) normalizes the amplitude of the
1391 * received signal, adjusting for the attenuation produced by the
1392 * cable. By reading the AGC registers, which reperesent the
1393 * cobination of course and fine gain value, the value can be put
1394 * into a lookup table to obtain the approximate cable length
1395 * for each channel.
1396 **/
1397s32 e1000e_get_cable_length_igp_2(struct e1000_hw *hw)
1398{
1399 struct e1000_phy_info *phy = &hw->phy;
1400 s32 ret_val;
1401 u16 phy_data, i, agc_value = 0;
1402 u16 cur_agc_index, max_agc_index = 0;
1403 u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1;
1404 u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] =
1405 {IGP02E1000_PHY_AGC_A,
1406 IGP02E1000_PHY_AGC_B,
1407 IGP02E1000_PHY_AGC_C,
1408 IGP02E1000_PHY_AGC_D};
1409
1410 /* Read the AGC registers for all channels */
1411 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
1412 ret_val = e1e_rphy(hw, agc_reg_array[i], &phy_data);
1413 if (ret_val)
1414 return ret_val;
1415
1416 /* Getting bits 15:9, which represent the combination of
1417 * course and fine gain values. The result is a number
1418 * that can be put into the lookup table to obtain the
1419 * approximate cable length. */
1420 cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
1421 IGP02E1000_AGC_LENGTH_MASK;
1422
1423 /* Array index bound check. */
1424 if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) ||
1425 (cur_agc_index == 0))
1426 return -E1000_ERR_PHY;
1427
1428 /* Remove min & max AGC values from calculation. */
1429 if (e1000_igp_2_cable_length_table[min_agc_index] >
1430 e1000_igp_2_cable_length_table[cur_agc_index])
1431 min_agc_index = cur_agc_index;
1432 if (e1000_igp_2_cable_length_table[max_agc_index] <
1433 e1000_igp_2_cable_length_table[cur_agc_index])
1434 max_agc_index = cur_agc_index;
1435
1436 agc_value += e1000_igp_2_cable_length_table[cur_agc_index];
1437 }
1438
1439 agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] +
1440 e1000_igp_2_cable_length_table[max_agc_index]);
1441 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
1442
1443 /* Calculate cable length with the error range of +/- 10 meters. */
1444 phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
1445 (agc_value - IGP02E1000_AGC_RANGE) : 0;
1446 phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE;
1447
1448 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1449
1450 return ret_val;
1451}
1452
1453/**
1454 * e1000e_get_phy_info_m88 - Retrieve PHY information
1455 * @hw: pointer to the HW structure
1456 *
1457 * Valid for only copper links. Read the PHY status register (sticky read)
1458 * to verify that link is up. Read the PHY special control register to
1459 * determine the polarity and 10base-T extended distance. Read the PHY
1460 * special status register to determine MDI/MDIx and current speed. If
1461 * speed is 1000, then determine cable length, local and remote receiver.
1462 **/
1463s32 e1000e_get_phy_info_m88(struct e1000_hw *hw)
1464{
1465 struct e1000_phy_info *phy = &hw->phy;
1466 s32 ret_val;
1467 u16 phy_data;
1468 bool link;
1469
1470 if (hw->media_type != e1000_media_type_copper) {
1471 hw_dbg(hw, "Phy info is only valid for copper media\n");
1472 return -E1000_ERR_CONFIG;
1473 }
1474
1475 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
1476 if (ret_val)
1477 return ret_val;
1478
1479 if (!link) {
1480 hw_dbg(hw, "Phy info is only valid if link is up\n");
1481 return -E1000_ERR_CONFIG;
1482 }
1483
1484 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1485 if (ret_val)
1486 return ret_val;
1487
1488 phy->polarity_correction = (phy_data &
1489 M88E1000_PSCR_POLARITY_REVERSAL);
1490
1491 ret_val = e1000_check_polarity_m88(hw);
1492 if (ret_val)
1493 return ret_val;
1494
1495 ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1496 if (ret_val)
1497 return ret_val;
1498
1499 phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX);
1500
1501 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
1502 ret_val = e1000_get_cable_length(hw);
1503 if (ret_val)
1504 return ret_val;
1505
1506 ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &phy_data);
1507 if (ret_val)
1508 return ret_val;
1509
1510 phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS)
1511 ? e1000_1000t_rx_status_ok
1512 : e1000_1000t_rx_status_not_ok;
1513
1514 phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS)
1515 ? e1000_1000t_rx_status_ok
1516 : e1000_1000t_rx_status_not_ok;
1517 } else {
1518 /* Set values to "undefined" */
1519 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
1520 phy->local_rx = e1000_1000t_rx_status_undefined;
1521 phy->remote_rx = e1000_1000t_rx_status_undefined;
1522 }
1523
1524 return ret_val;
1525}
1526
1527/**
1528 * e1000e_get_phy_info_igp - Retrieve igp PHY information
1529 * @hw: pointer to the HW structure
1530 *
1531 * Read PHY status to determine if link is up. If link is up, then
1532 * set/determine 10base-T extended distance and polarity correction. Read
1533 * PHY port status to determine MDI/MDIx and speed. Based on the speed,
1534 * determine on the cable length, local and remote receiver.
1535 **/
1536s32 e1000e_get_phy_info_igp(struct e1000_hw *hw)
1537{
1538 struct e1000_phy_info *phy = &hw->phy;
1539 s32 ret_val;
1540 u16 data;
1541 bool link;
1542
1543 ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
1544 if (ret_val)
1545 return ret_val;
1546
1547 if (!link) {
1548 hw_dbg(hw, "Phy info is only valid if link is up\n");
1549 return -E1000_ERR_CONFIG;
1550 }
1551
1552 phy->polarity_correction = 1;
1553
1554 ret_val = e1000_check_polarity_igp(hw);
1555 if (ret_val)
1556 return ret_val;
1557
1558 ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data);
1559 if (ret_val)
1560 return ret_val;
1561
1562 phy->is_mdix = (data & IGP01E1000_PSSR_MDIX);
1563
1564 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
1565 IGP01E1000_PSSR_SPEED_1000MBPS) {
1566 ret_val = e1000_get_cable_length(hw);
1567 if (ret_val)
1568 return ret_val;
1569
1570 ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &data);
1571 if (ret_val)
1572 return ret_val;
1573
1574 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
1575 ? e1000_1000t_rx_status_ok
1576 : e1000_1000t_rx_status_not_ok;
1577
1578 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
1579 ? e1000_1000t_rx_status_ok
1580 : e1000_1000t_rx_status_not_ok;
1581 } else {
1582 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
1583 phy->local_rx = e1000_1000t_rx_status_undefined;
1584 phy->remote_rx = e1000_1000t_rx_status_undefined;
1585 }
1586
1587 return ret_val;
1588}
1589
1590/**
1591 * e1000e_phy_sw_reset - PHY software reset
1592 * @hw: pointer to the HW structure
1593 *
1594 * Does a software reset of the PHY by reading the PHY control register and
1595 * setting/write the control register reset bit to the PHY.
1596 **/
1597s32 e1000e_phy_sw_reset(struct e1000_hw *hw)
1598{
1599 s32 ret_val;
1600 u16 phy_ctrl;
1601
1602 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl);
1603 if (ret_val)
1604 return ret_val;
1605
1606 phy_ctrl |= MII_CR_RESET;
1607 ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl);
1608 if (ret_val)
1609 return ret_val;
1610
1611 udelay(1);
1612
1613 return ret_val;
1614}
1615
1616/**
1617 * e1000e_phy_hw_reset_generic - PHY hardware reset
1618 * @hw: pointer to the HW structure
1619 *
1620 * Verify the reset block is not blocking us from resetting. Acquire
1621 * semaphore (if necessary) and read/set/write the device control reset
1622 * bit in the PHY. Wait the appropriate delay time for the device to
1623 * reset and relase the semaphore (if necessary).
1624 **/
1625s32 e1000e_phy_hw_reset_generic(struct e1000_hw *hw)
1626{
1627 struct e1000_phy_info *phy = &hw->phy;
1628 s32 ret_val;
1629 u32 ctrl;
1630
1631 ret_val = e1000_check_reset_block(hw);
1632 if (ret_val)
1633 return 0;
1634
1635 ret_val = phy->ops.acquire_phy(hw);
1636 if (ret_val)
1637 return ret_val;
1638
1639 ctrl = er32(CTRL);
1640 ew32(CTRL, ctrl | E1000_CTRL_PHY_RST);
1641 e1e_flush();
1642
1643 udelay(phy->reset_delay_us);
1644
1645 ew32(CTRL, ctrl);
1646 e1e_flush();
1647
1648 udelay(150);
1649
1650 phy->ops.release_phy(hw);
1651
1652 return e1000_get_phy_cfg_done(hw);
1653}
1654
1655/**
1656 * e1000e_get_cfg_done - Generic configuration done
1657 * @hw: pointer to the HW structure
1658 *
1659 * Generic function to wait 10 milli-seconds for configuration to complete
1660 * and return success.
1661 **/
1662s32 e1000e_get_cfg_done(struct e1000_hw *hw)
1663{
1664 mdelay(10);
1665 return 0;
1666}
1667
1668/* Internal function pointers */
1669
1670/**
1671 * e1000_get_phy_cfg_done - Generic PHY configuration done
1672 * @hw: pointer to the HW structure
1673 *
1674 * Return success if silicon family did not implement a family specific
1675 * get_cfg_done function.
1676 **/
1677static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw)
1678{
1679 if (hw->phy.ops.get_cfg_done)
1680 return hw->phy.ops.get_cfg_done(hw);
1681
1682 return 0;
1683}
1684
1685/**
1686 * e1000_phy_force_speed_duplex - Generic force PHY speed/duplex
1687 * @hw: pointer to the HW structure
1688 *
1689 * When the silicon family has not implemented a forced speed/duplex
1690 * function for the PHY, simply return 0.
1691 **/
1692static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
1693{
1694 if (hw->phy.ops.force_speed_duplex)
1695 return hw->phy.ops.force_speed_duplex(hw);
1696
1697 return 0;
1698}
1699
1700/**
1701 * e1000e_get_phy_type_from_id - Get PHY type from id
1702 * @phy_id: phy_id read from the phy
1703 *
1704 * Returns the phy type from the id.
1705 **/
1706enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id)
1707{
1708 enum e1000_phy_type phy_type = e1000_phy_unknown;
1709
1710 switch (phy_id) {
1711 case M88E1000_I_PHY_ID:
1712 case M88E1000_E_PHY_ID:
1713 case M88E1111_I_PHY_ID:
1714 case M88E1011_I_PHY_ID:
1715 phy_type = e1000_phy_m88;
1716 break;
1717 case IGP01E1000_I_PHY_ID: /* IGP 1 & 2 share this */
1718 phy_type = e1000_phy_igp_2;
1719 break;
1720 case GG82563_E_PHY_ID:
1721 phy_type = e1000_phy_gg82563;
1722 break;
1723 case IGP03E1000_E_PHY_ID:
1724 phy_type = e1000_phy_igp_3;
1725 break;
1726 case IFE_E_PHY_ID:
1727 case IFE_PLUS_E_PHY_ID:
1728 case IFE_C_E_PHY_ID:
1729 phy_type = e1000_phy_ife;
1730 break;
1731 default:
1732 phy_type = e1000_phy_unknown;
1733 break;
1734 }
1735 return phy_type;
1736}
1737
1738/**
1739 * e1000e_commit_phy - Soft PHY reset
1740 * @hw: pointer to the HW structure
1741 *
1742 * Performs a soft PHY reset on those that apply. This is a function pointer
1743 * entry point called by drivers.
1744 **/
1745s32 e1000e_commit_phy(struct e1000_hw *hw)
1746{
1747 if (hw->phy.ops.commit_phy)
1748 return hw->phy.ops.commit_phy(hw);
1749
1750 return 0;
1751}
1752
1753/**
1754 * e1000_set_d0_lplu_state - Sets low power link up state for D0
1755 * @hw: pointer to the HW structure
1756 * @active: boolean used to enable/disable lplu
1757 *
1758 * Success returns 0, Failure returns 1
1759 *
1760 * The low power link up (lplu) state is set to the power management level D0
1761 * and SmartSpeed is disabled when active is true, else clear lplu for D0
1762 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1763 * is used during Dx states where the power conservation is most important.
1764 * During driver activity, SmartSpeed should be enabled so performance is
1765 * maintained. This is a function pointer entry point called by drivers.
1766 **/
1767static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
1768{
1769 if (hw->phy.ops.set_d0_lplu_state)
1770 return hw->phy.ops.set_d0_lplu_state(hw, active);
1771
1772 return 0;
1773}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 10:53:01 -0500