1 /******************************************************************************
3 Copyright (c) 2001-2015, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
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13 notice, this list of conditions and the following disclaimer in the
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18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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32 ******************************************************************************/
35 /* 82562G 10/100 Network Connection
36 * 82562G-2 10/100 Network Connection
37 * 82562GT 10/100 Network Connection
38 * 82562GT-2 10/100 Network Connection
39 * 82562V 10/100 Network Connection
40 * 82562V-2 10/100 Network Connection
41 * 82566DC-2 Gigabit Network Connection
42 * 82566DC Gigabit Network Connection
43 * 82566DM-2 Gigabit Network Connection
44 * 82566DM Gigabit Network Connection
45 * 82566MC Gigabit Network Connection
46 * 82566MM Gigabit Network Connection
47 * 82567LM Gigabit Network Connection
48 * 82567LF Gigabit Network Connection
49 * 82567V Gigabit Network Connection
50 * 82567LM-2 Gigabit Network Connection
51 * 82567LF-2 Gigabit Network Connection
52 * 82567V-2 Gigabit Network Connection
53 * 82567LF-3 Gigabit Network Connection
54 * 82567LM-3 Gigabit Network Connection
55 * 82567LM-4 Gigabit Network Connection
56 * 82577LM Gigabit Network Connection
57 * 82577LC Gigabit Network Connection
58 * 82578DM Gigabit Network Connection
59 * 82578DC Gigabit Network Connection
60 * 82579LM Gigabit Network Connection
61 * 82579V Gigabit Network Connection
62 * Ethernet Connection I217-LM
63 * Ethernet Connection I217-V
64 * Ethernet Connection I218-V
65 * Ethernet Connection I218-LM
66 * Ethernet Connection (2) I218-LM
67 * Ethernet Connection (2) I218-V
68 * Ethernet Connection (3) I218-LM
69 * Ethernet Connection (3) I218-V
72 #include "e1000_api.h"
74 static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw);
75 static void e1000_release_swflag_ich8lan(struct e1000_hw *hw);
76 static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw);
77 static void e1000_release_nvm_ich8lan(struct e1000_hw *hw);
78 static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw);
79 static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw);
80 static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index);
81 static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index);
82 static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw);
83 static void e1000_update_mc_addr_list_pch2lan(struct e1000_hw *hw,
86 static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw);
87 static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw);
88 static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active);
89 static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw,
91 static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw,
93 static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset,
94 u16 words, u16 *data);
95 static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset,
96 u16 words, u16 *data);
97 static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw);
98 static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw);
99 static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw,
101 static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw);
102 static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw);
103 static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw);
104 static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw);
105 static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw);
106 static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw);
107 static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw);
108 static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw,
109 u16 *speed, u16 *duplex);
110 static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw);
111 static s32 e1000_led_on_ich8lan(struct e1000_hw *hw);
112 static s32 e1000_led_off_ich8lan(struct e1000_hw *hw);
113 static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link);
114 static s32 e1000_setup_led_pchlan(struct e1000_hw *hw);
115 static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw);
116 static s32 e1000_led_on_pchlan(struct e1000_hw *hw);
117 static s32 e1000_led_off_pchlan(struct e1000_hw *hw);
118 static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw);
119 static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank);
120 static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw);
121 static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw);
122 static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw,
123 u32 offset, u8 *data);
124 static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
126 static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw,
127 u32 offset, u16 *data);
128 static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
129 u32 offset, u8 byte);
130 static s32 e1000_get_cfg_done_ich8lan(struct e1000_hw *hw);
131 static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw);
132 static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw);
133 static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw);
134 static s32 e1000_k1_workaround_lv(struct e1000_hw *hw);
135 static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate);
136 static s32 e1000_set_obff_timer_pch_lpt(struct e1000_hw *hw, u32 itr);
138 /* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
139 /* Offset 04h HSFSTS */
140 union ich8_hws_flash_status {
142 u16 flcdone:1; /* bit 0 Flash Cycle Done */
143 u16 flcerr:1; /* bit 1 Flash Cycle Error */
144 u16 dael:1; /* bit 2 Direct Access error Log */
145 u16 berasesz:2; /* bit 4:3 Sector Erase Size */
146 u16 flcinprog:1; /* bit 5 flash cycle in Progress */
147 u16 reserved1:2; /* bit 13:6 Reserved */
148 u16 reserved2:6; /* bit 13:6 Reserved */
149 u16 fldesvalid:1; /* bit 14 Flash Descriptor Valid */
150 u16 flockdn:1; /* bit 15 Flash Config Lock-Down */
155 /* ICH GbE Flash Hardware Sequencing Flash control Register bit breakdown */
156 /* Offset 06h FLCTL */
157 union ich8_hws_flash_ctrl {
158 struct ich8_hsflctl {
159 u16 flcgo:1; /* 0 Flash Cycle Go */
160 u16 flcycle:2; /* 2:1 Flash Cycle */
161 u16 reserved:5; /* 7:3 Reserved */
162 u16 fldbcount:2; /* 9:8 Flash Data Byte Count */
163 u16 flockdn:6; /* 15:10 Reserved */
168 /* ICH Flash Region Access Permissions */
169 union ich8_hws_flash_regacc {
171 u32 grra:8; /* 0:7 GbE region Read Access */
172 u32 grwa:8; /* 8:15 GbE region Write Access */
173 u32 gmrag:8; /* 23:16 GbE Master Read Access Grant */
174 u32 gmwag:8; /* 31:24 GbE Master Write Access Grant */
180 * e1000_phy_is_accessible_pchlan - Check if able to access PHY registers
181 * @hw: pointer to the HW structure
183 * Test access to the PHY registers by reading the PHY ID registers. If
184 * the PHY ID is already known (e.g. resume path) compare it with known ID,
185 * otherwise assume the read PHY ID is correct if it is valid.
187 * Assumes the sw/fw/hw semaphore is already acquired.
189 static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw)
197 for (retry_count = 0; retry_count < 2; retry_count++) {
198 ret_val = hw->phy.ops.read_reg_locked(hw, PHY_ID1, &phy_reg);
199 if (ret_val || (phy_reg == 0xFFFF))
201 phy_id = (u32)(phy_reg << 16);
203 ret_val = hw->phy.ops.read_reg_locked(hw, PHY_ID2, &phy_reg);
204 if (ret_val || (phy_reg == 0xFFFF)) {
208 phy_id |= (u32)(phy_reg & PHY_REVISION_MASK);
213 if (hw->phy.id == phy_id)
217 hw->phy.revision = (u32)(phy_reg & ~PHY_REVISION_MASK);
221 /* In case the PHY needs to be in mdio slow mode,
222 * set slow mode and try to get the PHY id again.
224 if (hw->mac.type < e1000_pch_lpt) {
225 hw->phy.ops.release(hw);
226 ret_val = e1000_set_mdio_slow_mode_hv(hw);
228 ret_val = e1000_get_phy_id(hw);
229 hw->phy.ops.acquire(hw);
235 if (hw->mac.type == e1000_pch_lpt) {
236 /* Unforce SMBus mode in PHY */
237 hw->phy.ops.read_reg_locked(hw, CV_SMB_CTRL, &phy_reg);
238 phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
239 hw->phy.ops.write_reg_locked(hw, CV_SMB_CTRL, phy_reg);
241 /* Unforce SMBus mode in MAC */
242 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
243 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
244 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
251 * e1000_toggle_lanphypc_pch_lpt - toggle the LANPHYPC pin value
252 * @hw: pointer to the HW structure
254 * Toggling the LANPHYPC pin value fully power-cycles the PHY and is
255 * used to reset the PHY to a quiescent state when necessary.
257 static void e1000_toggle_lanphypc_pch_lpt(struct e1000_hw *hw)
261 DEBUGFUNC("e1000_toggle_lanphypc_pch_lpt");
263 /* Set Phy Config Counter to 50msec */
264 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM3);
265 mac_reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
266 mac_reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
267 E1000_WRITE_REG(hw, E1000_FEXTNVM3, mac_reg);
269 /* Toggle LANPHYPC Value bit */
270 mac_reg = E1000_READ_REG(hw, E1000_CTRL);
271 mac_reg |= E1000_CTRL_LANPHYPC_OVERRIDE;
272 mac_reg &= ~E1000_CTRL_LANPHYPC_VALUE;
273 E1000_WRITE_REG(hw, E1000_CTRL, mac_reg);
274 E1000_WRITE_FLUSH(hw);
276 mac_reg &= ~E1000_CTRL_LANPHYPC_OVERRIDE;
277 E1000_WRITE_REG(hw, E1000_CTRL, mac_reg);
278 E1000_WRITE_FLUSH(hw);
280 if (hw->mac.type < e1000_pch_lpt) {
287 } while (!(E1000_READ_REG(hw, E1000_CTRL_EXT) &
288 E1000_CTRL_EXT_LPCD) && count--);
295 * e1000_init_phy_workarounds_pchlan - PHY initialization workarounds
296 * @hw: pointer to the HW structure
298 * Workarounds/flow necessary for PHY initialization during driver load
301 static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
303 u32 mac_reg, fwsm = E1000_READ_REG(hw, E1000_FWSM);
306 DEBUGFUNC("e1000_init_phy_workarounds_pchlan");
308 /* Gate automatic PHY configuration by hardware on managed and
309 * non-managed 82579 and newer adapters.
311 e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
313 /* It is not possible to be certain of the current state of ULP
314 * so forcibly disable it.
316 hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_unknown;
317 e1000_disable_ulp_lpt_lp(hw, TRUE);
319 ret_val = hw->phy.ops.acquire(hw);
321 DEBUGOUT("Failed to initialize PHY flow\n");
325 /* The MAC-PHY interconnect may be in SMBus mode. If the PHY is
326 * inaccessible and resetting the PHY is not blocked, toggle the
327 * LANPHYPC Value bit to force the interconnect to PCIe mode.
329 switch (hw->mac.type) {
331 if (e1000_phy_is_accessible_pchlan(hw))
334 /* Before toggling LANPHYPC, see if PHY is accessible by
335 * forcing MAC to SMBus mode first.
337 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
338 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
339 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
341 /* Wait 50 milliseconds for MAC to finish any retries
342 * that it might be trying to perform from previous
343 * attempts to acknowledge any phy read requests.
349 if (e1000_phy_is_accessible_pchlan(hw))
354 if ((hw->mac.type == e1000_pchlan) &&
355 (fwsm & E1000_ICH_FWSM_FW_VALID))
358 if (hw->phy.ops.check_reset_block(hw)) {
359 DEBUGOUT("Required LANPHYPC toggle blocked by ME\n");
360 ret_val = -E1000_ERR_PHY;
364 /* Toggle LANPHYPC Value bit */
365 e1000_toggle_lanphypc_pch_lpt(hw);
366 if (hw->mac.type >= e1000_pch_lpt) {
367 if (e1000_phy_is_accessible_pchlan(hw))
370 /* Toggling LANPHYPC brings the PHY out of SMBus mode
371 * so ensure that the MAC is also out of SMBus mode
373 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
374 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
375 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
377 if (e1000_phy_is_accessible_pchlan(hw))
380 ret_val = -E1000_ERR_PHY;
387 hw->phy.ops.release(hw);
390 /* Check to see if able to reset PHY. Print error if not */
391 if (hw->phy.ops.check_reset_block(hw)) {
392 ERROR_REPORT("Reset blocked by ME\n");
396 /* Reset the PHY before any access to it. Doing so, ensures
397 * that the PHY is in a known good state before we read/write
398 * PHY registers. The generic reset is sufficient here,
399 * because we haven't determined the PHY type yet.
401 ret_val = e1000_phy_hw_reset_generic(hw);
405 /* On a successful reset, possibly need to wait for the PHY
406 * to quiesce to an accessible state before returning control
407 * to the calling function. If the PHY does not quiesce, then
408 * return E1000E_BLK_PHY_RESET, as this is the condition that
411 ret_val = hw->phy.ops.check_reset_block(hw);
413 ERROR_REPORT("ME blocked access to PHY after reset\n");
417 /* Ungate automatic PHY configuration on non-managed 82579 */
418 if ((hw->mac.type == e1000_pch2lan) &&
419 !(fwsm & E1000_ICH_FWSM_FW_VALID)) {
421 e1000_gate_hw_phy_config_ich8lan(hw, FALSE);
428 * e1000_init_phy_params_pchlan - Initialize PHY function pointers
429 * @hw: pointer to the HW structure
431 * Initialize family-specific PHY parameters and function pointers.
433 static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
435 struct e1000_phy_info *phy = &hw->phy;
438 DEBUGFUNC("e1000_init_phy_params_pchlan");
441 phy->reset_delay_us = 100;
443 phy->ops.acquire = e1000_acquire_swflag_ich8lan;
444 phy->ops.check_reset_block = e1000_check_reset_block_ich8lan;
445 phy->ops.get_cfg_done = e1000_get_cfg_done_ich8lan;
446 phy->ops.set_page = e1000_set_page_igp;
447 phy->ops.read_reg = e1000_read_phy_reg_hv;
448 phy->ops.read_reg_locked = e1000_read_phy_reg_hv_locked;
449 phy->ops.read_reg_page = e1000_read_phy_reg_page_hv;
450 phy->ops.release = e1000_release_swflag_ich8lan;
451 phy->ops.reset = e1000_phy_hw_reset_ich8lan;
452 phy->ops.set_d0_lplu_state = e1000_set_lplu_state_pchlan;
453 phy->ops.set_d3_lplu_state = e1000_set_lplu_state_pchlan;
454 phy->ops.write_reg = e1000_write_phy_reg_hv;
455 phy->ops.write_reg_locked = e1000_write_phy_reg_hv_locked;
456 phy->ops.write_reg_page = e1000_write_phy_reg_page_hv;
457 phy->ops.power_up = e1000_power_up_phy_copper;
458 phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
459 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
461 phy->id = e1000_phy_unknown;
463 ret_val = e1000_init_phy_workarounds_pchlan(hw);
467 if (phy->id == e1000_phy_unknown)
468 switch (hw->mac.type) {
470 ret_val = e1000_get_phy_id(hw);
473 if ((phy->id != 0) && (phy->id != PHY_REVISION_MASK))
478 /* In case the PHY needs to be in mdio slow mode,
479 * set slow mode and try to get the PHY id again.
481 ret_val = e1000_set_mdio_slow_mode_hv(hw);
484 ret_val = e1000_get_phy_id(hw);
489 phy->type = e1000_get_phy_type_from_id(phy->id);
492 case e1000_phy_82577:
493 case e1000_phy_82579:
495 phy->ops.check_polarity = e1000_check_polarity_82577;
496 phy->ops.force_speed_duplex =
497 e1000_phy_force_speed_duplex_82577;
498 phy->ops.get_cable_length = e1000_get_cable_length_82577;
499 phy->ops.get_info = e1000_get_phy_info_82577;
500 phy->ops.commit = e1000_phy_sw_reset_generic;
502 case e1000_phy_82578:
503 phy->ops.check_polarity = e1000_check_polarity_m88;
504 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
505 phy->ops.get_cable_length = e1000_get_cable_length_m88;
506 phy->ops.get_info = e1000_get_phy_info_m88;
509 ret_val = -E1000_ERR_PHY;
517 * e1000_init_phy_params_ich8lan - Initialize PHY function pointers
518 * @hw: pointer to the HW structure
520 * Initialize family-specific PHY parameters and function pointers.
522 static s32 e1000_init_phy_params_ich8lan(struct e1000_hw *hw)
524 struct e1000_phy_info *phy = &hw->phy;
528 DEBUGFUNC("e1000_init_phy_params_ich8lan");
531 phy->reset_delay_us = 100;
533 phy->ops.acquire = e1000_acquire_swflag_ich8lan;
534 phy->ops.check_reset_block = e1000_check_reset_block_ich8lan;
535 phy->ops.get_cable_length = e1000_get_cable_length_igp_2;
536 phy->ops.get_cfg_done = e1000_get_cfg_done_ich8lan;
537 phy->ops.read_reg = e1000_read_phy_reg_igp;
538 phy->ops.release = e1000_release_swflag_ich8lan;
539 phy->ops.reset = e1000_phy_hw_reset_ich8lan;
540 phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_ich8lan;
541 phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_ich8lan;
542 phy->ops.write_reg = e1000_write_phy_reg_igp;
543 phy->ops.power_up = e1000_power_up_phy_copper;
544 phy->ops.power_down = e1000_power_down_phy_copper_ich8lan;
546 /* We may need to do this twice - once for IGP and if that fails,
547 * we'll set BM func pointers and try again
549 ret_val = e1000_determine_phy_address(hw);
551 phy->ops.write_reg = e1000_write_phy_reg_bm;
552 phy->ops.read_reg = e1000_read_phy_reg_bm;
553 ret_val = e1000_determine_phy_address(hw);
555 DEBUGOUT("Cannot determine PHY addr. Erroring out\n");
561 while ((e1000_phy_unknown == e1000_get_phy_type_from_id(phy->id)) &&
564 ret_val = e1000_get_phy_id(hw);
571 case IGP03E1000_E_PHY_ID:
572 phy->type = e1000_phy_igp_3;
573 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
574 phy->ops.read_reg_locked = e1000_read_phy_reg_igp_locked;
575 phy->ops.write_reg_locked = e1000_write_phy_reg_igp_locked;
576 phy->ops.get_info = e1000_get_phy_info_igp;
577 phy->ops.check_polarity = e1000_check_polarity_igp;
578 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_igp;
581 case IFE_PLUS_E_PHY_ID:
583 phy->type = e1000_phy_ife;
584 phy->autoneg_mask = E1000_ALL_NOT_GIG;
585 phy->ops.get_info = e1000_get_phy_info_ife;
586 phy->ops.check_polarity = e1000_check_polarity_ife;
587 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_ife;
589 case BME1000_E_PHY_ID:
590 phy->type = e1000_phy_bm;
591 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
592 phy->ops.read_reg = e1000_read_phy_reg_bm;
593 phy->ops.write_reg = e1000_write_phy_reg_bm;
594 phy->ops.commit = e1000_phy_sw_reset_generic;
595 phy->ops.get_info = e1000_get_phy_info_m88;
596 phy->ops.check_polarity = e1000_check_polarity_m88;
597 phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_m88;
600 return -E1000_ERR_PHY;
604 return E1000_SUCCESS;
608 * e1000_init_nvm_params_ich8lan - Initialize NVM function pointers
609 * @hw: pointer to the HW structure
611 * Initialize family-specific NVM parameters and function
614 static s32 e1000_init_nvm_params_ich8lan(struct e1000_hw *hw)
616 struct e1000_nvm_info *nvm = &hw->nvm;
617 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
618 u32 gfpreg, sector_base_addr, sector_end_addr;
621 DEBUGFUNC("e1000_init_nvm_params_ich8lan");
623 /* Can't read flash registers if the register set isn't mapped. */
624 nvm->type = e1000_nvm_flash_sw;
625 if (!hw->flash_address) {
626 DEBUGOUT("ERROR: Flash registers not mapped\n");
627 return -E1000_ERR_CONFIG;
630 gfpreg = E1000_READ_FLASH_REG(hw, ICH_FLASH_GFPREG);
632 /* sector_X_addr is a "sector"-aligned address (4096 bytes)
633 * Add 1 to sector_end_addr since this sector is included in
636 sector_base_addr = gfpreg & FLASH_GFPREG_BASE_MASK;
637 sector_end_addr = ((gfpreg >> 16) & FLASH_GFPREG_BASE_MASK) + 1;
639 /* flash_base_addr is byte-aligned */
640 nvm->flash_base_addr = sector_base_addr << FLASH_SECTOR_ADDR_SHIFT;
642 /* find total size of the NVM, then cut in half since the total
643 * size represents two separate NVM banks.
645 nvm->flash_bank_size = ((sector_end_addr - sector_base_addr)
646 << FLASH_SECTOR_ADDR_SHIFT);
647 nvm->flash_bank_size /= 2;
648 /* Adjust to word count */
649 nvm->flash_bank_size /= sizeof(u16);
651 nvm->word_size = E1000_SHADOW_RAM_WORDS;
653 /* Clear shadow ram */
654 for (i = 0; i < nvm->word_size; i++) {
655 dev_spec->shadow_ram[i].modified = FALSE;
656 dev_spec->shadow_ram[i].value = 0xFFFF;
659 E1000_MUTEX_INIT(&dev_spec->nvm_mutex);
660 E1000_MUTEX_INIT(&dev_spec->swflag_mutex);
662 /* Function Pointers */
663 nvm->ops.acquire = e1000_acquire_nvm_ich8lan;
664 nvm->ops.release = e1000_release_nvm_ich8lan;
665 nvm->ops.read = e1000_read_nvm_ich8lan;
666 nvm->ops.update = e1000_update_nvm_checksum_ich8lan;
667 nvm->ops.valid_led_default = e1000_valid_led_default_ich8lan;
668 nvm->ops.validate = e1000_validate_nvm_checksum_ich8lan;
669 nvm->ops.write = e1000_write_nvm_ich8lan;
671 return E1000_SUCCESS;
675 * e1000_init_mac_params_ich8lan - Initialize MAC function pointers
676 * @hw: pointer to the HW structure
678 * Initialize family-specific MAC parameters and function
681 static s32 e1000_init_mac_params_ich8lan(struct e1000_hw *hw)
683 struct e1000_mac_info *mac = &hw->mac;
684 #if defined(QV_RELEASE) || !defined(NO_PCH_LPT_B0_SUPPORT)
686 #endif /* QV_RELEASE || !defined(NO_PCH_LPT_B0_SUPPORT) */
688 DEBUGFUNC("e1000_init_mac_params_ich8lan");
690 /* Set media type function pointer */
691 hw->phy.media_type = e1000_media_type_copper;
693 /* Set mta register count */
694 mac->mta_reg_count = 32;
695 /* Set rar entry count */
696 mac->rar_entry_count = E1000_ICH_RAR_ENTRIES;
697 if (mac->type == e1000_ich8lan)
698 mac->rar_entry_count--;
699 /* Set if part includes ASF firmware */
700 mac->asf_firmware_present = TRUE;
702 mac->has_fwsm = TRUE;
703 /* ARC subsystem not supported */
704 mac->arc_subsystem_valid = FALSE;
705 /* Adaptive IFS supported */
706 mac->adaptive_ifs = TRUE;
708 /* Function pointers */
710 /* bus type/speed/width */
711 mac->ops.get_bus_info = e1000_get_bus_info_ich8lan;
713 mac->ops.set_lan_id = e1000_set_lan_id_single_port;
715 mac->ops.reset_hw = e1000_reset_hw_ich8lan;
716 /* hw initialization */
717 mac->ops.init_hw = e1000_init_hw_ich8lan;
719 mac->ops.setup_link = e1000_setup_link_ich8lan;
720 /* physical interface setup */
721 mac->ops.setup_physical_interface = e1000_setup_copper_link_ich8lan;
723 mac->ops.check_for_link = e1000_check_for_copper_link_ich8lan;
725 mac->ops.get_link_up_info = e1000_get_link_up_info_ich8lan;
726 /* multicast address update */
727 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic;
728 /* clear hardware counters */
729 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_ich8lan;
731 /* LED and other operations */
736 /* check management mode */
737 mac->ops.check_mng_mode = e1000_check_mng_mode_ich8lan;
739 mac->ops.id_led_init = e1000_id_led_init_generic;
741 mac->ops.blink_led = e1000_blink_led_generic;
743 mac->ops.setup_led = e1000_setup_led_generic;
745 mac->ops.cleanup_led = e1000_cleanup_led_ich8lan;
746 /* turn on/off LED */
747 mac->ops.led_on = e1000_led_on_ich8lan;
748 mac->ops.led_off = e1000_led_off_ich8lan;
751 mac->rar_entry_count = E1000_PCH2_RAR_ENTRIES;
752 mac->ops.rar_set = e1000_rar_set_pch2lan;
755 /* multicast address update for pch2 */
756 mac->ops.update_mc_addr_list =
757 e1000_update_mc_addr_list_pch2lan;
759 #if defined(QV_RELEASE) || !defined(NO_PCH_LPT_B0_SUPPORT)
760 /* save PCH revision_id */
761 e1000_read_pci_cfg(hw, E1000_PCI_REVISION_ID_REG, &pci_cfg);
762 hw->revision_id = (u8)(pci_cfg &= 0x000F);
763 #endif /* QV_RELEASE || !defined(NO_PCH_LPT_B0_SUPPORT) */
764 /* check management mode */
765 mac->ops.check_mng_mode = e1000_check_mng_mode_pchlan;
767 mac->ops.id_led_init = e1000_id_led_init_pchlan;
769 mac->ops.setup_led = e1000_setup_led_pchlan;
771 mac->ops.cleanup_led = e1000_cleanup_led_pchlan;
772 /* turn on/off LED */
773 mac->ops.led_on = e1000_led_on_pchlan;
774 mac->ops.led_off = e1000_led_off_pchlan;
780 if (mac->type == e1000_pch_lpt) {
781 mac->rar_entry_count = E1000_PCH_LPT_RAR_ENTRIES;
782 mac->ops.rar_set = e1000_rar_set_pch_lpt;
783 mac->ops.setup_physical_interface = e1000_setup_copper_link_pch_lpt;
784 mac->ops.set_obff_timer = e1000_set_obff_timer_pch_lpt;
787 /* Enable PCS Lock-loss workaround for ICH8 */
788 if (mac->type == e1000_ich8lan)
789 e1000_set_kmrn_lock_loss_workaround_ich8lan(hw, TRUE);
791 return E1000_SUCCESS;
795 * __e1000_access_emi_reg_locked - Read/write EMI register
796 * @hw: pointer to the HW structure
797 * @addr: EMI address to program
798 * @data: pointer to value to read/write from/to the EMI address
799 * @read: boolean flag to indicate read or write
801 * This helper function assumes the SW/FW/HW Semaphore is already acquired.
803 static s32 __e1000_access_emi_reg_locked(struct e1000_hw *hw, u16 address,
804 u16 *data, bool read)
808 DEBUGFUNC("__e1000_access_emi_reg_locked");
810 ret_val = hw->phy.ops.write_reg_locked(hw, I82579_EMI_ADDR, address);
815 ret_val = hw->phy.ops.read_reg_locked(hw, I82579_EMI_DATA,
818 ret_val = hw->phy.ops.write_reg_locked(hw, I82579_EMI_DATA,
825 * e1000_read_emi_reg_locked - Read Extended Management Interface register
826 * @hw: pointer to the HW structure
827 * @addr: EMI address to program
828 * @data: value to be read from the EMI address
830 * Assumes the SW/FW/HW Semaphore is already acquired.
832 s32 e1000_read_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 *data)
834 DEBUGFUNC("e1000_read_emi_reg_locked");
836 return __e1000_access_emi_reg_locked(hw, addr, data, TRUE);
840 * e1000_write_emi_reg_locked - Write Extended Management Interface register
841 * @hw: pointer to the HW structure
842 * @addr: EMI address to program
843 * @data: value to be written to the EMI address
845 * Assumes the SW/FW/HW Semaphore is already acquired.
847 s32 e1000_write_emi_reg_locked(struct e1000_hw *hw, u16 addr, u16 data)
849 DEBUGFUNC("e1000_read_emi_reg_locked");
851 return __e1000_access_emi_reg_locked(hw, addr, &data, FALSE);
855 * e1000_set_eee_pchlan - Enable/disable EEE support
856 * @hw: pointer to the HW structure
858 * Enable/disable EEE based on setting in dev_spec structure, the duplex of
859 * the link and the EEE capabilities of the link partner. The LPI Control
860 * register bits will remain set only if/when link is up.
862 * EEE LPI must not be asserted earlier than one second after link is up.
863 * On 82579, EEE LPI should not be enabled until such time otherwise there
864 * can be link issues with some switches. Other devices can have EEE LPI
865 * enabled immediately upon link up since they have a timer in hardware which
866 * prevents LPI from being asserted too early.
868 s32 e1000_set_eee_pchlan(struct e1000_hw *hw)
870 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
872 u16 lpa, pcs_status, adv, adv_addr, lpi_ctrl, data;
874 DEBUGFUNC("e1000_set_eee_pchlan");
876 switch (hw->phy.type) {
877 case e1000_phy_82579:
878 lpa = I82579_EEE_LP_ABILITY;
879 pcs_status = I82579_EEE_PCS_STATUS;
880 adv_addr = I82579_EEE_ADVERTISEMENT;
883 lpa = I217_EEE_LP_ABILITY;
884 pcs_status = I217_EEE_PCS_STATUS;
885 adv_addr = I217_EEE_ADVERTISEMENT;
888 return E1000_SUCCESS;
891 ret_val = hw->phy.ops.acquire(hw);
895 ret_val = hw->phy.ops.read_reg_locked(hw, I82579_LPI_CTRL, &lpi_ctrl);
899 /* Clear bits that enable EEE in various speeds */
900 lpi_ctrl &= ~I82579_LPI_CTRL_ENABLE_MASK;
902 /* Enable EEE if not disabled by user */
903 if (!dev_spec->eee_disable) {
904 /* Save off link partner's EEE ability */
905 ret_val = e1000_read_emi_reg_locked(hw, lpa,
906 &dev_spec->eee_lp_ability);
910 /* Read EEE advertisement */
911 ret_val = e1000_read_emi_reg_locked(hw, adv_addr, &adv);
915 /* Enable EEE only for speeds in which the link partner is
916 * EEE capable and for which we advertise EEE.
918 if (adv & dev_spec->eee_lp_ability & I82579_EEE_1000_SUPPORTED)
919 lpi_ctrl |= I82579_LPI_CTRL_1000_ENABLE;
921 if (adv & dev_spec->eee_lp_ability & I82579_EEE_100_SUPPORTED) {
922 hw->phy.ops.read_reg_locked(hw, PHY_LP_ABILITY, &data);
923 if (data & NWAY_LPAR_100TX_FD_CAPS)
924 lpi_ctrl |= I82579_LPI_CTRL_100_ENABLE;
926 /* EEE is not supported in 100Half, so ignore
927 * partner's EEE in 100 ability if full-duplex
930 dev_spec->eee_lp_ability &=
931 ~I82579_EEE_100_SUPPORTED;
935 if (hw->phy.type == e1000_phy_82579) {
936 ret_val = e1000_read_emi_reg_locked(hw, I82579_LPI_PLL_SHUT,
941 data &= ~I82579_LPI_100_PLL_SHUT;
942 ret_val = e1000_write_emi_reg_locked(hw, I82579_LPI_PLL_SHUT,
946 /* R/Clr IEEE MMD 3.1 bits 11:10 - Tx/Rx LPI Received */
947 ret_val = e1000_read_emi_reg_locked(hw, pcs_status, &data);
951 ret_val = hw->phy.ops.write_reg_locked(hw, I82579_LPI_CTRL, lpi_ctrl);
953 hw->phy.ops.release(hw);
959 * e1000_k1_workaround_lpt_lp - K1 workaround on Lynxpoint-LP
960 * @hw: pointer to the HW structure
961 * @link: link up bool flag
963 * When K1 is enabled for 1Gbps, the MAC can miss 2 DMA completion indications
964 * preventing further DMA write requests. Workaround the issue by disabling
965 * the de-assertion of the clock request when in 1Gpbs mode.
966 * Also, set appropriate Tx re-transmission timeouts for 10 and 100Half link
967 * speeds in order to avoid Tx hangs.
969 static s32 e1000_k1_workaround_lpt_lp(struct e1000_hw *hw, bool link)
971 u32 fextnvm6 = E1000_READ_REG(hw, E1000_FEXTNVM6);
972 u32 status = E1000_READ_REG(hw, E1000_STATUS);
973 s32 ret_val = E1000_SUCCESS;
976 if (link && (status & E1000_STATUS_SPEED_1000)) {
977 ret_val = hw->phy.ops.acquire(hw);
982 e1000_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
988 e1000_write_kmrn_reg_locked(hw,
989 E1000_KMRNCTRLSTA_K1_CONFIG,
991 ~E1000_KMRNCTRLSTA_K1_ENABLE);
997 E1000_WRITE_REG(hw, E1000_FEXTNVM6,
998 fextnvm6 | E1000_FEXTNVM6_REQ_PLL_CLK);
1001 e1000_write_kmrn_reg_locked(hw,
1002 E1000_KMRNCTRLSTA_K1_CONFIG,
1005 hw->phy.ops.release(hw);
1007 /* clear FEXTNVM6 bit 8 on link down or 10/100 */
1008 fextnvm6 &= ~E1000_FEXTNVM6_REQ_PLL_CLK;
1010 if (!link || ((status & E1000_STATUS_SPEED_100) &&
1011 (status & E1000_STATUS_FD)))
1012 goto update_fextnvm6;
1014 ret_val = hw->phy.ops.read_reg(hw, I217_INBAND_CTRL, ®);
1018 /* Clear link status transmit timeout */
1019 reg &= ~I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_MASK;
1021 if (status & E1000_STATUS_SPEED_100) {
1022 /* Set inband Tx timeout to 5x10us for 100Half */
1023 reg |= 5 << I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT;
1025 /* Do not extend the K1 entry latency for 100Half */
1026 fextnvm6 &= ~E1000_FEXTNVM6_ENABLE_K1_ENTRY_CONDITION;
1028 /* Set inband Tx timeout to 50x10us for 10Full/Half */
1030 I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT;
1032 /* Extend the K1 entry latency for 10 Mbps */
1033 fextnvm6 |= E1000_FEXTNVM6_ENABLE_K1_ENTRY_CONDITION;
1036 ret_val = hw->phy.ops.write_reg(hw, I217_INBAND_CTRL, reg);
1041 E1000_WRITE_REG(hw, E1000_FEXTNVM6, fextnvm6);
1047 static u64 e1000_ltr2ns(u16 ltr)
1051 /* Determine the latency in nsec based on the LTR value & scale */
1052 value = ltr & E1000_LTRV_VALUE_MASK;
1053 scale = (ltr & E1000_LTRV_SCALE_MASK) >> E1000_LTRV_SCALE_SHIFT;
1055 return value * (1 << (scale * E1000_LTRV_SCALE_FACTOR));
1059 * e1000_platform_pm_pch_lpt - Set platform power management values
1060 * @hw: pointer to the HW structure
1061 * @link: bool indicating link status
1063 * Set the Latency Tolerance Reporting (LTR) values for the "PCIe-like"
1064 * GbE MAC in the Lynx Point PCH based on Rx buffer size and link speed
1065 * when link is up (which must not exceed the maximum latency supported
1066 * by the platform), otherwise specify there is no LTR requirement.
1067 * Unlike TRUE-PCIe devices which set the LTR maximum snoop/no-snoop
1068 * latencies in the LTR Extended Capability Structure in the PCIe Extended
1069 * Capability register set, on this device LTR is set by writing the
1070 * equivalent snoop/no-snoop latencies in the LTRV register in the MAC and
1071 * set the SEND bit to send an Intel On-chip System Fabric sideband (IOSF-SB)
1072 * message to the PMC.
1074 * Use the LTR value to calculate the Optimized Buffer Flush/Fill (OBFF)
1077 static s32 e1000_platform_pm_pch_lpt(struct e1000_hw *hw, bool link)
1079 u32 reg = link << (E1000_LTRV_REQ_SHIFT + E1000_LTRV_NOSNOOP_SHIFT) |
1080 link << E1000_LTRV_REQ_SHIFT | E1000_LTRV_SEND;
1081 u16 lat_enc = 0; /* latency encoded */
1084 DEBUGFUNC("e1000_platform_pm_pch_lpt");
1087 u16 speed, duplex, scale = 0;
1088 u16 max_snoop, max_nosnoop;
1089 u16 max_ltr_enc; /* max LTR latency encoded */
1094 if (!hw->mac.max_frame_size) {
1095 DEBUGOUT("max_frame_size not set.\n");
1096 return -E1000_ERR_CONFIG;
1099 hw->mac.ops.get_link_up_info(hw, &speed, &duplex);
1101 DEBUGOUT("Speed not set.\n");
1102 return -E1000_ERR_CONFIG;
1105 /* Rx Packet Buffer Allocation size (KB) */
1106 rxa = E1000_READ_REG(hw, E1000_PBA) & E1000_PBA_RXA_MASK;
1108 /* Determine the maximum latency tolerated by the device.
1110 * Per the PCIe spec, the tolerated latencies are encoded as
1111 * a 3-bit encoded scale (only 0-5 are valid) multiplied by
1112 * a 10-bit value (0-1023) to provide a range from 1 ns to
1113 * 2^25*(2^10-1) ns. The scale is encoded as 0=2^0ns,
1114 * 1=2^5ns, 2=2^10ns,...5=2^25ns.
1116 lat_ns = ((s64)rxa * 1024 -
1117 (2 * (s64)hw->mac.max_frame_size)) * 8 * 1000;
1124 while (value > E1000_LTRV_VALUE_MASK) {
1126 value = E1000_DIVIDE_ROUND_UP(value, (1 << 5));
1128 if (scale > E1000_LTRV_SCALE_MAX) {
1129 DEBUGOUT1("Invalid LTR latency scale %d\n", scale);
1130 return -E1000_ERR_CONFIG;
1132 lat_enc = (u16)((scale << E1000_LTRV_SCALE_SHIFT) | value);
1134 /* Determine the maximum latency tolerated by the platform */
1135 e1000_read_pci_cfg(hw, E1000_PCI_LTR_CAP_LPT, &max_snoop);
1136 e1000_read_pci_cfg(hw, E1000_PCI_LTR_CAP_LPT + 2, &max_nosnoop);
1137 max_ltr_enc = E1000_MAX(max_snoop, max_nosnoop);
1139 if (lat_enc > max_ltr_enc) {
1140 lat_enc = max_ltr_enc;
1141 lat_ns = e1000_ltr2ns(max_ltr_enc);
1145 lat_ns *= speed * 1000;
1147 lat_ns /= 1000000000;
1148 obff_hwm = (s32)(rxa - lat_ns);
1150 if ((obff_hwm < 0) || (obff_hwm > E1000_SVT_OFF_HWM_MASK)) {
1151 DEBUGOUT1("Invalid high water mark %d\n", obff_hwm);
1152 return -E1000_ERR_CONFIG;
1156 /* Set Snoop and No-Snoop latencies the same */
1157 reg |= lat_enc | (lat_enc << E1000_LTRV_NOSNOOP_SHIFT);
1158 E1000_WRITE_REG(hw, E1000_LTRV, reg);
1160 /* Set OBFF high water mark */
1161 reg = E1000_READ_REG(hw, E1000_SVT) & ~E1000_SVT_OFF_HWM_MASK;
1163 E1000_WRITE_REG(hw, E1000_SVT, reg);
1166 reg = E1000_READ_REG(hw, E1000_SVCR);
1167 reg |= E1000_SVCR_OFF_EN;
1168 /* Always unblock interrupts to the CPU even when the system is
1169 * in OBFF mode. This ensures that small round-robin traffic
1170 * (like ping) does not get dropped or experience long latency.
1172 reg |= E1000_SVCR_OFF_MASKINT;
1173 E1000_WRITE_REG(hw, E1000_SVCR, reg);
1175 return E1000_SUCCESS;
1179 * e1000_set_obff_timer_pch_lpt - Update Optimized Buffer Flush/Fill timer
1180 * @hw: pointer to the HW structure
1181 * @itr: interrupt throttling rate
1183 * Configure OBFF with the updated interrupt rate.
1185 static s32 e1000_set_obff_timer_pch_lpt(struct e1000_hw *hw, u32 itr)
1190 DEBUGFUNC("e1000_set_obff_timer_pch_lpt");
1192 /* Convert ITR value into microseconds for OBFF timer */
1193 timer = itr & E1000_ITR_MASK;
1194 timer = (timer * E1000_ITR_MULT) / 1000;
1196 if ((timer < 0) || (timer > E1000_ITR_MASK)) {
1197 DEBUGOUT1("Invalid OBFF timer %d\n", timer);
1198 return -E1000_ERR_CONFIG;
1201 svcr = E1000_READ_REG(hw, E1000_SVCR);
1202 svcr &= ~E1000_SVCR_OFF_TIMER_MASK;
1203 svcr |= timer << E1000_SVCR_OFF_TIMER_SHIFT;
1204 E1000_WRITE_REG(hw, E1000_SVCR, svcr);
1206 return E1000_SUCCESS;
1210 * e1000_enable_ulp_lpt_lp - configure Ultra Low Power mode for LynxPoint-LP
1211 * @hw: pointer to the HW structure
1212 * @to_sx: boolean indicating a system power state transition to Sx
1214 * When link is down, configure ULP mode to significantly reduce the power
1215 * to the PHY. If on a Manageability Engine (ME) enabled system, tell the
1216 * ME firmware to start the ULP configuration. If not on an ME enabled
1217 * system, configure the ULP mode by software.
1219 s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
1222 s32 ret_val = E1000_SUCCESS;
1225 if ((hw->mac.type < e1000_pch_lpt) ||
1226 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_LM) ||
1227 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_V) ||
1228 (hw->device_id == E1000_DEV_ID_PCH_I218_LM2) ||
1229 (hw->device_id == E1000_DEV_ID_PCH_I218_V2) ||
1230 (hw->dev_spec.ich8lan.ulp_state == e1000_ulp_state_on))
1233 if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
1234 /* Request ME configure ULP mode in the PHY */
1235 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1236 mac_reg |= E1000_H2ME_ULP | E1000_H2ME_ENFORCE_SETTINGS;
1237 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1245 /* Poll up to 5 seconds for Cable Disconnected indication */
1246 while (!(E1000_READ_REG(hw, E1000_FEXT) &
1247 E1000_FEXT_PHY_CABLE_DISCONNECTED)) {
1248 /* Bail if link is re-acquired */
1249 if (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)
1250 return -E1000_ERR_PHY;
1257 DEBUGOUT2("CABLE_DISCONNECTED %s set after %dmsec\n",
1258 (E1000_READ_REG(hw, E1000_FEXT) &
1259 E1000_FEXT_PHY_CABLE_DISCONNECTED) ? "" : "not",
1263 ret_val = hw->phy.ops.acquire(hw);
1267 /* Force SMBus mode in PHY */
1268 ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
1271 phy_reg |= CV_SMB_CTRL_FORCE_SMBUS;
1272 e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
1274 /* Force SMBus mode in MAC */
1275 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
1276 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
1277 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
1279 /* Set Inband ULP Exit, Reset to SMBus mode and
1280 * Disable SMBus Release on PERST# in PHY
1282 ret_val = e1000_read_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, &phy_reg);
1285 phy_reg |= (I218_ULP_CONFIG1_RESET_TO_SMBUS |
1286 I218_ULP_CONFIG1_DISABLE_SMB_PERST);
1288 if (E1000_READ_REG(hw, E1000_WUFC) & E1000_WUFC_LNKC)
1289 phy_reg |= I218_ULP_CONFIG1_WOL_HOST;
1291 phy_reg |= I218_ULP_CONFIG1_STICKY_ULP;
1293 phy_reg |= I218_ULP_CONFIG1_INBAND_EXIT;
1295 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1297 /* Set Disable SMBus Release on PERST# in MAC */
1298 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM7);
1299 mac_reg |= E1000_FEXTNVM7_DISABLE_SMB_PERST;
1300 E1000_WRITE_REG(hw, E1000_FEXTNVM7, mac_reg);
1302 /* Commit ULP changes in PHY by starting auto ULP configuration */
1303 phy_reg |= I218_ULP_CONFIG1_START;
1304 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1306 hw->phy.ops.release(hw);
1309 DEBUGOUT1("Error in ULP enable flow: %d\n", ret_val);
1311 hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_on;
1317 * e1000_disable_ulp_lpt_lp - unconfigure Ultra Low Power mode for LynxPoint-LP
1318 * @hw: pointer to the HW structure
1319 * @force: boolean indicating whether or not to force disabling ULP
1321 * Un-configure ULP mode when link is up, the system is transitioned from
1322 * Sx or the driver is unloaded. If on a Manageability Engine (ME) enabled
1323 * system, poll for an indication from ME that ULP has been un-configured.
1324 * If not on an ME enabled system, un-configure the ULP mode by software.
1326 * During nominal operation, this function is called when link is acquired
1327 * to disable ULP mode (force=FALSE); otherwise, for example when unloading
1328 * the driver or during Sx->S0 transitions, this is called with force=TRUE
1329 * to forcibly disable ULP.
1331 s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
1333 s32 ret_val = E1000_SUCCESS;
1338 if ((hw->mac.type < e1000_pch_lpt) ||
1339 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_LM) ||
1340 (hw->device_id == E1000_DEV_ID_PCH_LPT_I217_V) ||
1341 (hw->device_id == E1000_DEV_ID_PCH_I218_LM2) ||
1342 (hw->device_id == E1000_DEV_ID_PCH_I218_V2) ||
1343 (hw->dev_spec.ich8lan.ulp_state == e1000_ulp_state_off))
1346 if (E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID) {
1348 /* Request ME un-configure ULP mode in the PHY */
1349 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1350 mac_reg &= ~E1000_H2ME_ULP;
1351 mac_reg |= E1000_H2ME_ENFORCE_SETTINGS;
1352 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1355 /* Poll up to 100msec for ME to clear ULP_CFG_DONE */
1356 while (E1000_READ_REG(hw, E1000_FWSM) &
1357 E1000_FWSM_ULP_CFG_DONE) {
1359 ret_val = -E1000_ERR_PHY;
1365 DEBUGOUT1("ULP_CONFIG_DONE cleared after %dmsec\n", i * 10);
1368 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1369 mac_reg &= ~E1000_H2ME_ENFORCE_SETTINGS;
1370 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1372 /* Clear H2ME.ULP after ME ULP configuration */
1373 mac_reg = E1000_READ_REG(hw, E1000_H2ME);
1374 mac_reg &= ~E1000_H2ME_ULP;
1375 E1000_WRITE_REG(hw, E1000_H2ME, mac_reg);
1381 ret_val = hw->phy.ops.acquire(hw);
1386 /* Toggle LANPHYPC Value bit */
1387 e1000_toggle_lanphypc_pch_lpt(hw);
1389 /* Unforce SMBus mode in PHY */
1390 ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
1392 /* The MAC might be in PCIe mode, so temporarily force to
1393 * SMBus mode in order to access the PHY.
1395 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
1396 mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
1397 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
1401 ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL,
1406 phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
1407 e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
1409 /* Unforce SMBus mode in MAC */
1410 mac_reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
1411 mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
1412 E1000_WRITE_REG(hw, E1000_CTRL_EXT, mac_reg);
1414 /* When ULP mode was previously entered, K1 was disabled by the
1415 * hardware. Re-Enable K1 in the PHY when exiting ULP.
1417 ret_val = e1000_read_phy_reg_hv_locked(hw, HV_PM_CTRL, &phy_reg);
1420 phy_reg |= HV_PM_CTRL_K1_ENABLE;
1421 e1000_write_phy_reg_hv_locked(hw, HV_PM_CTRL, phy_reg);
1423 /* Clear ULP enabled configuration */
1424 ret_val = e1000_read_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, &phy_reg);
1427 phy_reg &= ~(I218_ULP_CONFIG1_IND |
1428 I218_ULP_CONFIG1_STICKY_ULP |
1429 I218_ULP_CONFIG1_RESET_TO_SMBUS |
1430 I218_ULP_CONFIG1_WOL_HOST |
1431 I218_ULP_CONFIG1_INBAND_EXIT |
1432 I218_ULP_CONFIG1_DISABLE_SMB_PERST);
1433 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1435 /* Commit ULP changes by starting auto ULP configuration */
1436 phy_reg |= I218_ULP_CONFIG1_START;
1437 e1000_write_phy_reg_hv_locked(hw, I218_ULP_CONFIG1, phy_reg);
1439 /* Clear Disable SMBus Release on PERST# in MAC */
1440 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM7);
1441 mac_reg &= ~E1000_FEXTNVM7_DISABLE_SMB_PERST;
1442 E1000_WRITE_REG(hw, E1000_FEXTNVM7, mac_reg);
1445 hw->phy.ops.release(hw);
1447 hw->phy.ops.reset(hw);
1452 DEBUGOUT1("Error in ULP disable flow: %d\n", ret_val);
1454 hw->dev_spec.ich8lan.ulp_state = e1000_ulp_state_off;
1460 * e1000_check_for_copper_link_ich8lan - Check for link (Copper)
1461 * @hw: pointer to the HW structure
1463 * Checks to see of the link status of the hardware has changed. If a
1464 * change in link status has been detected, then we read the PHY registers
1465 * to get the current speed/duplex if link exists.
1467 static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
1469 struct e1000_mac_info *mac = &hw->mac;
1474 DEBUGFUNC("e1000_check_for_copper_link_ich8lan");
1476 /* We only want to go out to the PHY registers to see if Auto-Neg
1477 * has completed and/or if our link status has changed. The
1478 * get_link_status flag is set upon receiving a Link Status
1479 * Change or Rx Sequence Error interrupt.
1481 if (!mac->get_link_status)
1482 return E1000_SUCCESS;
1484 /* First we want to see if the MII Status Register reports
1485 * link. If so, then we want to get the current speed/duplex
1488 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
1492 if (hw->mac.type == e1000_pchlan) {
1493 ret_val = e1000_k1_gig_workaround_hv(hw, link);
1498 /* When connected at 10Mbps half-duplex, some parts are excessively
1499 * aggressive resulting in many collisions. To avoid this, increase
1500 * the IPG and reduce Rx latency in the PHY.
1502 if (((hw->mac.type == e1000_pch2lan) ||
1503 (hw->mac.type == e1000_pch_lpt)) && link) {
1505 reg = E1000_READ_REG(hw, E1000_STATUS);
1506 if (!(reg & (E1000_STATUS_FD | E1000_STATUS_SPEED_MASK))) {
1509 reg = E1000_READ_REG(hw, E1000_TIPG);
1510 reg &= ~E1000_TIPG_IPGT_MASK;
1512 E1000_WRITE_REG(hw, E1000_TIPG, reg);
1514 /* Reduce Rx latency in analog PHY */
1515 ret_val = hw->phy.ops.acquire(hw);
1519 if (hw->mac.type == e1000_pch2lan)
1520 emi_addr = I82579_RX_CONFIG;
1522 emi_addr = I217_RX_CONFIG;
1523 ret_val = e1000_write_emi_reg_locked(hw, emi_addr, 0);
1525 hw->phy.ops.release(hw);
1532 /* Work-around I218 hang issue */
1533 if ((hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
1534 (hw->device_id == E1000_DEV_ID_PCH_LPTLP_I218_V) ||
1535 (hw->device_id == E1000_DEV_ID_PCH_I218_LM3) ||
1536 (hw->device_id == E1000_DEV_ID_PCH_I218_V3)) {
1537 ret_val = e1000_k1_workaround_lpt_lp(hw, link);
1541 if (hw->mac.type == e1000_pch_lpt) {
1542 /* Set platform power management values for
1543 * Latency Tolerance Reporting (LTR)
1544 * Optimized Buffer Flush/Fill (OBFF)
1546 ret_val = e1000_platform_pm_pch_lpt(hw, link);
1551 /* Clear link partner's EEE ability */
1552 hw->dev_spec.ich8lan.eee_lp_ability = 0;
1555 return E1000_SUCCESS; /* No link detected */
1557 mac->get_link_status = FALSE;
1559 switch (hw->mac.type) {
1561 ret_val = e1000_k1_workaround_lv(hw);
1566 if (hw->phy.type == e1000_phy_82578) {
1567 ret_val = e1000_link_stall_workaround_hv(hw);
1572 /* Workaround for PCHx parts in half-duplex:
1573 * Set the number of preambles removed from the packet
1574 * when it is passed from the PHY to the MAC to prevent
1575 * the MAC from misinterpreting the packet type.
1577 hw->phy.ops.read_reg(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
1578 phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
1580 if ((E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_FD) !=
1582 phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
1584 hw->phy.ops.write_reg(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
1590 /* Check if there was DownShift, must be checked
1591 * immediately after link-up
1593 e1000_check_downshift_generic(hw);
1595 /* Enable/Disable EEE after link up */
1596 if (hw->phy.type > e1000_phy_82579) {
1597 ret_val = e1000_set_eee_pchlan(hw);
1602 /* If we are forcing speed/duplex, then we simply return since
1603 * we have already determined whether we have link or not.
1606 return -E1000_ERR_CONFIG;
1608 /* Auto-Neg is enabled. Auto Speed Detection takes care
1609 * of MAC speed/duplex configuration. So we only need to
1610 * configure Collision Distance in the MAC.
1612 mac->ops.config_collision_dist(hw);
1614 /* Configure Flow Control now that Auto-Neg has completed.
1615 * First, we need to restore the desired flow control
1616 * settings because we may have had to re-autoneg with a
1617 * different link partner.
1619 ret_val = e1000_config_fc_after_link_up_generic(hw);
1621 DEBUGOUT("Error configuring flow control\n");
1627 * e1000_init_function_pointers_ich8lan - Initialize ICH8 function pointers
1628 * @hw: pointer to the HW structure
1630 * Initialize family-specific function pointers for PHY, MAC, and NVM.
1632 void e1000_init_function_pointers_ich8lan(struct e1000_hw *hw)
1634 DEBUGFUNC("e1000_init_function_pointers_ich8lan");
1636 hw->mac.ops.init_params = e1000_init_mac_params_ich8lan;
1637 hw->nvm.ops.init_params = e1000_init_nvm_params_ich8lan;
1638 switch (hw->mac.type) {
1641 case e1000_ich10lan:
1642 hw->phy.ops.init_params = e1000_init_phy_params_ich8lan;
1647 hw->phy.ops.init_params = e1000_init_phy_params_pchlan;
1655 * e1000_acquire_nvm_ich8lan - Acquire NVM mutex
1656 * @hw: pointer to the HW structure
1658 * Acquires the mutex for performing NVM operations.
1660 static s32 e1000_acquire_nvm_ich8lan(struct e1000_hw *hw)
1662 DEBUGFUNC("e1000_acquire_nvm_ich8lan");
1664 E1000_MUTEX_LOCK(&hw->dev_spec.ich8lan.nvm_mutex);
1666 return E1000_SUCCESS;
1670 * e1000_release_nvm_ich8lan - Release NVM mutex
1671 * @hw: pointer to the HW structure
1673 * Releases the mutex used while performing NVM operations.
1675 static void e1000_release_nvm_ich8lan(struct e1000_hw *hw)
1677 DEBUGFUNC("e1000_release_nvm_ich8lan");
1679 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.nvm_mutex);
1685 * e1000_acquire_swflag_ich8lan - Acquire software control flag
1686 * @hw: pointer to the HW structure
1688 * Acquires the software control flag for performing PHY and select
1691 static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
1693 u32 extcnf_ctrl, timeout = PHY_CFG_TIMEOUT;
1694 s32 ret_val = E1000_SUCCESS;
1696 DEBUGFUNC("e1000_acquire_swflag_ich8lan");
1698 E1000_MUTEX_LOCK(&hw->dev_spec.ich8lan.swflag_mutex);
1701 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
1702 if (!(extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG))
1710 DEBUGOUT("SW has already locked the resource.\n");
1711 ret_val = -E1000_ERR_CONFIG;
1715 timeout = SW_FLAG_TIMEOUT;
1717 extcnf_ctrl |= E1000_EXTCNF_CTRL_SWFLAG;
1718 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
1721 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
1722 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG)
1730 DEBUGOUT2("Failed to acquire the semaphore, FW or HW has it: FWSM=0x%8.8x EXTCNF_CTRL=0x%8.8x)\n",
1731 E1000_READ_REG(hw, E1000_FWSM), extcnf_ctrl);
1732 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
1733 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
1734 ret_val = -E1000_ERR_CONFIG;
1740 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
1746 * e1000_release_swflag_ich8lan - Release software control flag
1747 * @hw: pointer to the HW structure
1749 * Releases the software control flag for performing PHY and select
1752 static void e1000_release_swflag_ich8lan(struct e1000_hw *hw)
1756 DEBUGFUNC("e1000_release_swflag_ich8lan");
1758 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
1760 if (extcnf_ctrl & E1000_EXTCNF_CTRL_SWFLAG) {
1761 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_SWFLAG;
1762 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
1764 DEBUGOUT("Semaphore unexpectedly released by sw/fw/hw\n");
1767 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
1773 * e1000_check_mng_mode_ich8lan - Checks management mode
1774 * @hw: pointer to the HW structure
1776 * This checks if the adapter has any manageability enabled.
1777 * This is a function pointer entry point only called by read/write
1778 * routines for the PHY and NVM parts.
1780 static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw)
1784 DEBUGFUNC("e1000_check_mng_mode_ich8lan");
1786 fwsm = E1000_READ_REG(hw, E1000_FWSM);
1788 return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
1789 ((fwsm & E1000_FWSM_MODE_MASK) ==
1790 (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
1794 * e1000_check_mng_mode_pchlan - Checks management mode
1795 * @hw: pointer to the HW structure
1797 * This checks if the adapter has iAMT enabled.
1798 * This is a function pointer entry point only called by read/write
1799 * routines for the PHY and NVM parts.
1801 static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw)
1805 DEBUGFUNC("e1000_check_mng_mode_pchlan");
1807 fwsm = E1000_READ_REG(hw, E1000_FWSM);
1809 return (fwsm & E1000_ICH_FWSM_FW_VALID) &&
1810 (fwsm & (E1000_ICH_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT));
1814 * e1000_rar_set_pch2lan - Set receive address register
1815 * @hw: pointer to the HW structure
1816 * @addr: pointer to the receive address
1817 * @index: receive address array register
1819 * Sets the receive address array register at index to the address passed
1820 * in by addr. For 82579, RAR[0] is the base address register that is to
1821 * contain the MAC address but RAR[1-6] are reserved for manageability (ME).
1822 * Use SHRA[0-3] in place of those reserved for ME.
1824 static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index)
1826 u32 rar_low, rar_high;
1828 DEBUGFUNC("e1000_rar_set_pch2lan");
1830 /* HW expects these in little endian so we reverse the byte order
1831 * from network order (big endian) to little endian
1833 rar_low = ((u32) addr[0] |
1834 ((u32) addr[1] << 8) |
1835 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
1837 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
1839 /* If MAC address zero, no need to set the AV bit */
1840 if (rar_low || rar_high)
1841 rar_high |= E1000_RAH_AV;
1844 E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
1845 E1000_WRITE_FLUSH(hw);
1846 E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
1847 E1000_WRITE_FLUSH(hw);
1848 return E1000_SUCCESS;
1851 /* RAR[1-6] are owned by manageability. Skip those and program the
1852 * next address into the SHRA register array.
1854 if (index < (u32) (hw->mac.rar_entry_count)) {
1857 ret_val = e1000_acquire_swflag_ich8lan(hw);
1861 E1000_WRITE_REG(hw, E1000_SHRAL(index - 1), rar_low);
1862 E1000_WRITE_FLUSH(hw);
1863 E1000_WRITE_REG(hw, E1000_SHRAH(index - 1), rar_high);
1864 E1000_WRITE_FLUSH(hw);
1866 e1000_release_swflag_ich8lan(hw);
1868 /* verify the register updates */
1869 if ((E1000_READ_REG(hw, E1000_SHRAL(index - 1)) == rar_low) &&
1870 (E1000_READ_REG(hw, E1000_SHRAH(index - 1)) == rar_high))
1871 return E1000_SUCCESS;
1873 DEBUGOUT2("SHRA[%d] might be locked by ME - FWSM=0x%8.8x\n",
1874 (index - 1), E1000_READ_REG(hw, E1000_FWSM));
1878 DEBUGOUT1("Failed to write receive address at index %d\n", index);
1879 return -E1000_ERR_CONFIG;
1883 * e1000_rar_set_pch_lpt - Set receive address registers
1884 * @hw: pointer to the HW structure
1885 * @addr: pointer to the receive address
1886 * @index: receive address array register
1888 * Sets the receive address register array at index to the address passed
1889 * in by addr. For LPT, RAR[0] is the base address register that is to
1890 * contain the MAC address. SHRA[0-10] are the shared receive address
1891 * registers that are shared between the Host and manageability engine (ME).
1893 static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index)
1895 u32 rar_low, rar_high;
1898 DEBUGFUNC("e1000_rar_set_pch_lpt");
1900 /* HW expects these in little endian so we reverse the byte order
1901 * from network order (big endian) to little endian
1903 rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
1904 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
1906 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
1908 /* If MAC address zero, no need to set the AV bit */
1909 if (rar_low || rar_high)
1910 rar_high |= E1000_RAH_AV;
1913 E1000_WRITE_REG(hw, E1000_RAL(index), rar_low);
1914 E1000_WRITE_FLUSH(hw);
1915 E1000_WRITE_REG(hw, E1000_RAH(index), rar_high);
1916 E1000_WRITE_FLUSH(hw);
1917 return E1000_SUCCESS;
1920 /* The manageability engine (ME) can lock certain SHRAR registers that
1921 * it is using - those registers are unavailable for use.
1923 if (index < hw->mac.rar_entry_count) {
1924 wlock_mac = E1000_READ_REG(hw, E1000_FWSM) &
1925 E1000_FWSM_WLOCK_MAC_MASK;
1926 wlock_mac >>= E1000_FWSM_WLOCK_MAC_SHIFT;
1928 /* Check if all SHRAR registers are locked */
1932 if ((wlock_mac == 0) || (index <= wlock_mac)) {
1935 ret_val = e1000_acquire_swflag_ich8lan(hw);
1940 E1000_WRITE_REG(hw, E1000_SHRAL_PCH_LPT(index - 1),
1942 E1000_WRITE_FLUSH(hw);
1943 E1000_WRITE_REG(hw, E1000_SHRAH_PCH_LPT(index - 1),
1945 E1000_WRITE_FLUSH(hw);
1947 e1000_release_swflag_ich8lan(hw);
1949 /* verify the register updates */
1950 if ((E1000_READ_REG(hw, E1000_SHRAL_PCH_LPT(index - 1)) == rar_low) &&
1951 (E1000_READ_REG(hw, E1000_SHRAH_PCH_LPT(index - 1)) == rar_high))
1952 return E1000_SUCCESS;
1957 DEBUGOUT1("Failed to write receive address at index %d\n", index);
1958 return -E1000_ERR_CONFIG;
1962 * e1000_update_mc_addr_list_pch2lan - Update Multicast addresses
1963 * @hw: pointer to the HW structure
1964 * @mc_addr_list: array of multicast addresses to program
1965 * @mc_addr_count: number of multicast addresses to program
1967 * Updates entire Multicast Table Array of the PCH2 MAC and PHY.
1968 * The caller must have a packed mc_addr_list of multicast addresses.
1970 static void e1000_update_mc_addr_list_pch2lan(struct e1000_hw *hw,
1978 DEBUGFUNC("e1000_update_mc_addr_list_pch2lan");
1980 e1000_update_mc_addr_list_generic(hw, mc_addr_list, mc_addr_count);
1982 ret_val = hw->phy.ops.acquire(hw);
1986 ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
1990 for (i = 0; i < hw->mac.mta_reg_count; i++) {
1991 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
1992 (u16)(hw->mac.mta_shadow[i] &
1994 hw->phy.ops.write_reg_page(hw, (BM_MTA(i) + 1),
1995 (u16)((hw->mac.mta_shadow[i] >> 16) &
1999 e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
2002 hw->phy.ops.release(hw);
2006 * e1000_check_reset_block_ich8lan - Check if PHY reset is blocked
2007 * @hw: pointer to the HW structure
2009 * Checks if firmware is blocking the reset of the PHY.
2010 * This is a function pointer entry point only called by
2013 static s32 e1000_check_reset_block_ich8lan(struct e1000_hw *hw)
2016 bool blocked = FALSE;
2019 DEBUGFUNC("e1000_check_reset_block_ich8lan");
2022 fwsm = E1000_READ_REG(hw, E1000_FWSM);
2023 if (!(fwsm & E1000_ICH_FWSM_RSPCIPHY)) {
2029 } while (blocked && (i++ < 10));
2030 return blocked ? E1000_BLK_PHY_RESET : E1000_SUCCESS;
2034 * e1000_write_smbus_addr - Write SMBus address to PHY needed during Sx states
2035 * @hw: pointer to the HW structure
2037 * Assumes semaphore already acquired.
2040 static s32 e1000_write_smbus_addr(struct e1000_hw *hw)
2043 u32 strap = E1000_READ_REG(hw, E1000_STRAP);
2044 u32 freq = (strap & E1000_STRAP_SMT_FREQ_MASK) >>
2045 E1000_STRAP_SMT_FREQ_SHIFT;
2048 strap &= E1000_STRAP_SMBUS_ADDRESS_MASK;
2050 ret_val = e1000_read_phy_reg_hv_locked(hw, HV_SMB_ADDR, &phy_data);
2054 phy_data &= ~HV_SMB_ADDR_MASK;
2055 phy_data |= (strap >> E1000_STRAP_SMBUS_ADDRESS_SHIFT);
2056 phy_data |= HV_SMB_ADDR_PEC_EN | HV_SMB_ADDR_VALID;
2058 if (hw->phy.type == e1000_phy_i217) {
2059 /* Restore SMBus frequency */
2061 phy_data &= ~HV_SMB_ADDR_FREQ_MASK;
2062 phy_data |= (freq & (1 << 0)) <<
2063 HV_SMB_ADDR_FREQ_LOW_SHIFT;
2064 phy_data |= (freq & (1 << 1)) <<
2065 (HV_SMB_ADDR_FREQ_HIGH_SHIFT - 1);
2067 DEBUGOUT("Unsupported SMB frequency in PHY\n");
2071 return e1000_write_phy_reg_hv_locked(hw, HV_SMB_ADDR, phy_data);
2075 * e1000_sw_lcd_config_ich8lan - SW-based LCD Configuration
2076 * @hw: pointer to the HW structure
2078 * SW should configure the LCD from the NVM extended configuration region
2079 * as a workaround for certain parts.
2081 static s32 e1000_sw_lcd_config_ich8lan(struct e1000_hw *hw)
2083 struct e1000_phy_info *phy = &hw->phy;
2084 u32 i, data, cnf_size, cnf_base_addr, sw_cfg_mask;
2085 s32 ret_val = E1000_SUCCESS;
2086 u16 word_addr, reg_data, reg_addr, phy_page = 0;
2088 DEBUGFUNC("e1000_sw_lcd_config_ich8lan");
2090 /* Initialize the PHY from the NVM on ICH platforms. This
2091 * is needed due to an issue where the NVM configuration is
2092 * not properly autoloaded after power transitions.
2093 * Therefore, after each PHY reset, we will load the
2094 * configuration data out of the NVM manually.
2096 switch (hw->mac.type) {
2098 if (phy->type != e1000_phy_igp_3)
2101 if ((hw->device_id == E1000_DEV_ID_ICH8_IGP_AMT) ||
2102 (hw->device_id == E1000_DEV_ID_ICH8_IGP_C)) {
2103 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG;
2110 sw_cfg_mask = E1000_FEXTNVM_SW_CONFIG_ICH8M;
2116 ret_val = hw->phy.ops.acquire(hw);
2120 data = E1000_READ_REG(hw, E1000_FEXTNVM);
2121 if (!(data & sw_cfg_mask))
2124 /* Make sure HW does not configure LCD from PHY
2125 * extended configuration before SW configuration
2127 data = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
2128 if ((hw->mac.type < e1000_pch2lan) &&
2129 (data & E1000_EXTCNF_CTRL_LCD_WRITE_ENABLE))
2132 cnf_size = E1000_READ_REG(hw, E1000_EXTCNF_SIZE);
2133 cnf_size &= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_MASK;
2134 cnf_size >>= E1000_EXTCNF_SIZE_EXT_PCIE_LENGTH_SHIFT;
2138 cnf_base_addr = data & E1000_EXTCNF_CTRL_EXT_CNF_POINTER_MASK;
2139 cnf_base_addr >>= E1000_EXTCNF_CTRL_EXT_CNF_POINTER_SHIFT;
2141 if (((hw->mac.type == e1000_pchlan) &&
2142 !(data & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)) ||
2143 (hw->mac.type > e1000_pchlan)) {
2144 /* HW configures the SMBus address and LEDs when the
2145 * OEM and LCD Write Enable bits are set in the NVM.
2146 * When both NVM bits are cleared, SW will configure
2149 ret_val = e1000_write_smbus_addr(hw);
2153 data = E1000_READ_REG(hw, E1000_LEDCTL);
2154 ret_val = e1000_write_phy_reg_hv_locked(hw, HV_LED_CONFIG,
2160 /* Configure LCD from extended configuration region. */
2162 /* cnf_base_addr is in DWORD */
2163 word_addr = (u16)(cnf_base_addr << 1);
2165 for (i = 0; i < cnf_size; i++) {
2166 ret_val = hw->nvm.ops.read(hw, (word_addr + i * 2), 1,
2171 ret_val = hw->nvm.ops.read(hw, (word_addr + i * 2 + 1),
2176 /* Save off the PHY page for future writes. */
2177 if (reg_addr == IGP01E1000_PHY_PAGE_SELECT) {
2178 phy_page = reg_data;
2182 reg_addr &= PHY_REG_MASK;
2183 reg_addr |= phy_page;
2185 ret_val = phy->ops.write_reg_locked(hw, (u32)reg_addr,
2192 hw->phy.ops.release(hw);
2197 * e1000_k1_gig_workaround_hv - K1 Si workaround
2198 * @hw: pointer to the HW structure
2199 * @link: link up bool flag
2201 * If K1 is enabled for 1Gbps, the MAC might stall when transitioning
2202 * from a lower speed. This workaround disables K1 whenever link is at 1Gig
2203 * If link is down, the function will restore the default K1 setting located
2206 static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link)
2208 s32 ret_val = E1000_SUCCESS;
2210 bool k1_enable = hw->dev_spec.ich8lan.nvm_k1_enabled;
2212 DEBUGFUNC("e1000_k1_gig_workaround_hv");
2214 if (hw->mac.type != e1000_pchlan)
2215 return E1000_SUCCESS;
2217 /* Wrap the whole flow with the sw flag */
2218 ret_val = hw->phy.ops.acquire(hw);
2222 /* Disable K1 when link is 1Gbps, otherwise use the NVM setting */
2224 if (hw->phy.type == e1000_phy_82578) {
2225 ret_val = hw->phy.ops.read_reg_locked(hw, BM_CS_STATUS,
2230 status_reg &= (BM_CS_STATUS_LINK_UP |
2231 BM_CS_STATUS_RESOLVED |
2232 BM_CS_STATUS_SPEED_MASK);
2234 if (status_reg == (BM_CS_STATUS_LINK_UP |
2235 BM_CS_STATUS_RESOLVED |
2236 BM_CS_STATUS_SPEED_1000))
2240 if (hw->phy.type == e1000_phy_82577) {
2241 ret_val = hw->phy.ops.read_reg_locked(hw, HV_M_STATUS,
2246 status_reg &= (HV_M_STATUS_LINK_UP |
2247 HV_M_STATUS_AUTONEG_COMPLETE |
2248 HV_M_STATUS_SPEED_MASK);
2250 if (status_reg == (HV_M_STATUS_LINK_UP |
2251 HV_M_STATUS_AUTONEG_COMPLETE |
2252 HV_M_STATUS_SPEED_1000))
2256 /* Link stall fix for link up */
2257 ret_val = hw->phy.ops.write_reg_locked(hw, PHY_REG(770, 19),
2263 /* Link stall fix for link down */
2264 ret_val = hw->phy.ops.write_reg_locked(hw, PHY_REG(770, 19),
2270 ret_val = e1000_configure_k1_ich8lan(hw, k1_enable);
2273 hw->phy.ops.release(hw);
2279 * e1000_configure_k1_ich8lan - Configure K1 power state
2280 * @hw: pointer to the HW structure
2281 * @enable: K1 state to configure
2283 * Configure the K1 power state based on the provided parameter.
2284 * Assumes semaphore already acquired.
2286 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
2288 s32 e1000_configure_k1_ich8lan(struct e1000_hw *hw, bool k1_enable)
2296 DEBUGFUNC("e1000_configure_k1_ich8lan");
2298 ret_val = e1000_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
2304 kmrn_reg |= E1000_KMRNCTRLSTA_K1_ENABLE;
2306 kmrn_reg &= ~E1000_KMRNCTRLSTA_K1_ENABLE;
2308 ret_val = e1000_write_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG,
2314 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
2315 ctrl_reg = E1000_READ_REG(hw, E1000_CTRL);
2317 reg = ctrl_reg & ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
2318 reg |= E1000_CTRL_FRCSPD;
2319 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2321 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_SPD_BYPS);
2322 E1000_WRITE_FLUSH(hw);
2324 E1000_WRITE_REG(hw, E1000_CTRL, ctrl_reg);
2325 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
2326 E1000_WRITE_FLUSH(hw);
2329 return E1000_SUCCESS;
2333 * e1000_oem_bits_config_ich8lan - SW-based LCD Configuration
2334 * @hw: pointer to the HW structure
2335 * @d0_state: boolean if entering d0 or d3 device state
2337 * SW will configure Gbe Disable and LPLU based on the NVM. The four bits are
2338 * collectively called OEM bits. The OEM Write Enable bit and SW Config bit
2339 * in NVM determines whether HW should configure LPLU and Gbe Disable.
2341 static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state)
2347 DEBUGFUNC("e1000_oem_bits_config_ich8lan");
2349 if (hw->mac.type < e1000_pchlan)
2352 ret_val = hw->phy.ops.acquire(hw);
2356 if (hw->mac.type == e1000_pchlan) {
2357 mac_reg = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
2358 if (mac_reg & E1000_EXTCNF_CTRL_OEM_WRITE_ENABLE)
2362 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM);
2363 if (!(mac_reg & E1000_FEXTNVM_SW_CONFIG_ICH8M))
2366 mac_reg = E1000_READ_REG(hw, E1000_PHY_CTRL);
2368 ret_val = hw->phy.ops.read_reg_locked(hw, HV_OEM_BITS, &oem_reg);
2372 oem_reg &= ~(HV_OEM_BITS_GBE_DIS | HV_OEM_BITS_LPLU);
2375 if (mac_reg & E1000_PHY_CTRL_GBE_DISABLE)
2376 oem_reg |= HV_OEM_BITS_GBE_DIS;
2378 if (mac_reg & E1000_PHY_CTRL_D0A_LPLU)
2379 oem_reg |= HV_OEM_BITS_LPLU;
2381 if (mac_reg & (E1000_PHY_CTRL_GBE_DISABLE |
2382 E1000_PHY_CTRL_NOND0A_GBE_DISABLE))
2383 oem_reg |= HV_OEM_BITS_GBE_DIS;
2385 if (mac_reg & (E1000_PHY_CTRL_D0A_LPLU |
2386 E1000_PHY_CTRL_NOND0A_LPLU))
2387 oem_reg |= HV_OEM_BITS_LPLU;
2390 /* Set Restart auto-neg to activate the bits */
2391 if ((d0_state || (hw->mac.type != e1000_pchlan)) &&
2392 !hw->phy.ops.check_reset_block(hw))
2393 oem_reg |= HV_OEM_BITS_RESTART_AN;
2395 ret_val = hw->phy.ops.write_reg_locked(hw, HV_OEM_BITS, oem_reg);
2398 hw->phy.ops.release(hw);
2405 * e1000_set_mdio_slow_mode_hv - Set slow MDIO access mode
2406 * @hw: pointer to the HW structure
2408 static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw)
2413 DEBUGFUNC("e1000_set_mdio_slow_mode_hv");
2415 ret_val = hw->phy.ops.read_reg(hw, HV_KMRN_MODE_CTRL, &data);
2419 data |= HV_KMRN_MDIO_SLOW;
2421 ret_val = hw->phy.ops.write_reg(hw, HV_KMRN_MODE_CTRL, data);
2427 * e1000_hv_phy_workarounds_ich8lan - A series of Phy workarounds to be
2428 * done after every PHY reset.
2430 static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw)
2432 s32 ret_val = E1000_SUCCESS;
2435 DEBUGFUNC("e1000_hv_phy_workarounds_ich8lan");
2437 if (hw->mac.type != e1000_pchlan)
2438 return E1000_SUCCESS;
2440 /* Set MDIO slow mode before any other MDIO access */
2441 if (hw->phy.type == e1000_phy_82577) {
2442 ret_val = e1000_set_mdio_slow_mode_hv(hw);
2447 if (((hw->phy.type == e1000_phy_82577) &&
2448 ((hw->phy.revision == 1) || (hw->phy.revision == 2))) ||
2449 ((hw->phy.type == e1000_phy_82578) && (hw->phy.revision == 1))) {
2450 /* Disable generation of early preamble */
2451 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 25), 0x4431);
2455 /* Preamble tuning for SSC */
2456 ret_val = hw->phy.ops.write_reg(hw, HV_KMRN_FIFO_CTRLSTA,
2462 if (hw->phy.type == e1000_phy_82578) {
2463 /* Return registers to default by doing a soft reset then
2464 * writing 0x3140 to the control register.
2466 if (hw->phy.revision < 2) {
2467 e1000_phy_sw_reset_generic(hw);
2468 ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL,
2474 ret_val = hw->phy.ops.acquire(hw);
2479 ret_val = e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 0);
2480 hw->phy.ops.release(hw);
2484 /* Configure the K1 Si workaround during phy reset assuming there is
2485 * link so that it disables K1 if link is in 1Gbps.
2487 ret_val = e1000_k1_gig_workaround_hv(hw, TRUE);
2491 /* Workaround for link disconnects on a busy hub in half duplex */
2492 ret_val = hw->phy.ops.acquire(hw);
2495 ret_val = hw->phy.ops.read_reg_locked(hw, BM_PORT_GEN_CFG, &phy_data);
2498 ret_val = hw->phy.ops.write_reg_locked(hw, BM_PORT_GEN_CFG,
2503 /* set MSE higher to enable link to stay up when noise is high */
2504 ret_val = e1000_write_emi_reg_locked(hw, I82577_MSE_THRESHOLD, 0x0034);
2506 hw->phy.ops.release(hw);
2512 * e1000_copy_rx_addrs_to_phy_ich8lan - Copy Rx addresses from MAC to PHY
2513 * @hw: pointer to the HW structure
2515 void e1000_copy_rx_addrs_to_phy_ich8lan(struct e1000_hw *hw)
2521 DEBUGFUNC("e1000_copy_rx_addrs_to_phy_ich8lan");
2523 ret_val = hw->phy.ops.acquire(hw);
2526 ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
2530 /* Copy both RAL/H (rar_entry_count) and SHRAL/H to PHY */
2531 for (i = 0; i < (hw->mac.rar_entry_count); i++) {
2532 mac_reg = E1000_READ_REG(hw, E1000_RAL(i));
2533 hw->phy.ops.write_reg_page(hw, BM_RAR_L(i),
2534 (u16)(mac_reg & 0xFFFF));
2535 hw->phy.ops.write_reg_page(hw, BM_RAR_M(i),
2536 (u16)((mac_reg >> 16) & 0xFFFF));
2538 mac_reg = E1000_READ_REG(hw, E1000_RAH(i));
2539 hw->phy.ops.write_reg_page(hw, BM_RAR_H(i),
2540 (u16)(mac_reg & 0xFFFF));
2541 hw->phy.ops.write_reg_page(hw, BM_RAR_CTRL(i),
2542 (u16)((mac_reg & E1000_RAH_AV)
2546 e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
2549 hw->phy.ops.release(hw);
2552 static u32 e1000_calc_rx_da_crc(u8 mac[])
2554 u32 poly = 0xEDB88320; /* Polynomial for 802.3 CRC calculation */
2555 u32 i, j, mask, crc;
2557 DEBUGFUNC("e1000_calc_rx_da_crc");
2560 for (i = 0; i < 6; i++) {
2562 for (j = 8; j > 0; j--) {
2563 mask = (crc & 1) * (-1);
2564 crc = (crc >> 1) ^ (poly & mask);
2571 * e1000_lv_jumbo_workaround_ich8lan - required for jumbo frame operation
2573 * @hw: pointer to the HW structure
2574 * @enable: flag to enable/disable workaround when enabling/disabling jumbos
2576 s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable)
2578 s32 ret_val = E1000_SUCCESS;
2583 DEBUGFUNC("e1000_lv_jumbo_workaround_ich8lan");
2585 if (hw->mac.type < e1000_pch2lan)
2586 return E1000_SUCCESS;
2588 /* disable Rx path while enabling/disabling workaround */
2589 hw->phy.ops.read_reg(hw, PHY_REG(769, 20), &phy_reg);
2590 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 20),
2591 phy_reg | (1 << 14));
2596 /* Write Rx addresses (rar_entry_count for RAL/H, and
2597 * SHRAL/H) and initial CRC values to the MAC
2599 for (i = 0; i < hw->mac.rar_entry_count; i++) {
2600 u8 mac_addr[ETH_ADDR_LEN] = {0};
2601 u32 addr_high, addr_low;
2603 addr_high = E1000_READ_REG(hw, E1000_RAH(i));
2604 if (!(addr_high & E1000_RAH_AV))
2606 addr_low = E1000_READ_REG(hw, E1000_RAL(i));
2607 mac_addr[0] = (addr_low & 0xFF);
2608 mac_addr[1] = ((addr_low >> 8) & 0xFF);
2609 mac_addr[2] = ((addr_low >> 16) & 0xFF);
2610 mac_addr[3] = ((addr_low >> 24) & 0xFF);
2611 mac_addr[4] = (addr_high & 0xFF);
2612 mac_addr[5] = ((addr_high >> 8) & 0xFF);
2614 E1000_WRITE_REG(hw, E1000_PCH_RAICC(i),
2615 e1000_calc_rx_da_crc(mac_addr));
2618 /* Write Rx addresses to the PHY */
2619 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
2621 /* Enable jumbo frame workaround in the MAC */
2622 mac_reg = E1000_READ_REG(hw, E1000_FFLT_DBG);
2623 mac_reg &= ~(1 << 14);
2624 mac_reg |= (7 << 15);
2625 E1000_WRITE_REG(hw, E1000_FFLT_DBG, mac_reg);
2627 mac_reg = E1000_READ_REG(hw, E1000_RCTL);
2628 mac_reg |= E1000_RCTL_SECRC;
2629 E1000_WRITE_REG(hw, E1000_RCTL, mac_reg);
2631 ret_val = e1000_read_kmrn_reg_generic(hw,
2632 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2636 ret_val = e1000_write_kmrn_reg_generic(hw,
2637 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2641 ret_val = e1000_read_kmrn_reg_generic(hw,
2642 E1000_KMRNCTRLSTA_HD_CTRL,
2646 data &= ~(0xF << 8);
2648 ret_val = e1000_write_kmrn_reg_generic(hw,
2649 E1000_KMRNCTRLSTA_HD_CTRL,
2654 /* Enable jumbo frame workaround in the PHY */
2655 hw->phy.ops.read_reg(hw, PHY_REG(769, 23), &data);
2656 data &= ~(0x7F << 5);
2657 data |= (0x37 << 5);
2658 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 23), data);
2661 hw->phy.ops.read_reg(hw, PHY_REG(769, 16), &data);
2663 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 16), data);
2666 hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data);
2667 data &= ~(0x3FF << 2);
2668 data |= (E1000_TX_PTR_GAP << 2);
2669 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data);
2672 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 23), 0xF100);
2675 hw->phy.ops.read_reg(hw, HV_PM_CTRL, &data);
2676 ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL, data |
2681 /* Write MAC register values back to h/w defaults */
2682 mac_reg = E1000_READ_REG(hw, E1000_FFLT_DBG);
2683 mac_reg &= ~(0xF << 14);
2684 E1000_WRITE_REG(hw, E1000_FFLT_DBG, mac_reg);
2686 mac_reg = E1000_READ_REG(hw, E1000_RCTL);
2687 mac_reg &= ~E1000_RCTL_SECRC;
2688 E1000_WRITE_REG(hw, E1000_RCTL, mac_reg);
2690 ret_val = e1000_read_kmrn_reg_generic(hw,
2691 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2695 ret_val = e1000_write_kmrn_reg_generic(hw,
2696 E1000_KMRNCTRLSTA_CTRL_OFFSET,
2700 ret_val = e1000_read_kmrn_reg_generic(hw,
2701 E1000_KMRNCTRLSTA_HD_CTRL,
2705 data &= ~(0xF << 8);
2707 ret_val = e1000_write_kmrn_reg_generic(hw,
2708 E1000_KMRNCTRLSTA_HD_CTRL,
2713 /* Write PHY register values back to h/w defaults */
2714 hw->phy.ops.read_reg(hw, PHY_REG(769, 23), &data);
2715 data &= ~(0x7F << 5);
2716 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 23), data);
2719 hw->phy.ops.read_reg(hw, PHY_REG(769, 16), &data);
2721 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(769, 16), data);
2724 hw->phy.ops.read_reg(hw, PHY_REG(776, 20), &data);
2725 data &= ~(0x3FF << 2);
2727 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 20), data);
2730 ret_val = hw->phy.ops.write_reg(hw, PHY_REG(776, 23), 0x7E00);
2733 hw->phy.ops.read_reg(hw, HV_PM_CTRL, &data);
2734 ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL, data &
2740 /* re-enable Rx path after enabling/disabling workaround */
2741 return hw->phy.ops.write_reg(hw, PHY_REG(769, 20), phy_reg &
2746 * e1000_lv_phy_workarounds_ich8lan - A series of Phy workarounds to be
2747 * done after every PHY reset.
2749 static s32 e1000_lv_phy_workarounds_ich8lan(struct e1000_hw *hw)
2751 s32 ret_val = E1000_SUCCESS;
2753 DEBUGFUNC("e1000_lv_phy_workarounds_ich8lan");
2755 if (hw->mac.type != e1000_pch2lan)
2756 return E1000_SUCCESS;
2758 /* Set MDIO slow mode before any other MDIO access */
2759 ret_val = e1000_set_mdio_slow_mode_hv(hw);
2763 ret_val = hw->phy.ops.acquire(hw);
2766 /* set MSE higher to enable link to stay up when noise is high */
2767 ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_THRESHOLD, 0x0034);
2770 /* drop link after 5 times MSE threshold was reached */
2771 ret_val = e1000_write_emi_reg_locked(hw, I82579_MSE_LINK_DOWN, 0x0005);
2773 hw->phy.ops.release(hw);
2779 * e1000_k1_gig_workaround_lv - K1 Si workaround
2780 * @hw: pointer to the HW structure
2782 * Workaround to set the K1 beacon duration for 82579 parts in 10Mbps
2783 * Disable K1 for 1000 and 100 speeds
2785 static s32 e1000_k1_workaround_lv(struct e1000_hw *hw)
2787 s32 ret_val = E1000_SUCCESS;
2790 DEBUGFUNC("e1000_k1_workaround_lv");
2792 if (hw->mac.type != e1000_pch2lan)
2793 return E1000_SUCCESS;
2795 /* Set K1 beacon duration based on 10Mbs speed */
2796 ret_val = hw->phy.ops.read_reg(hw, HV_M_STATUS, &status_reg);
2800 if ((status_reg & (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE))
2801 == (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE)) {
2803 (HV_M_STATUS_SPEED_1000 | HV_M_STATUS_SPEED_100)) {
2806 /* LV 1G/100 Packet drop issue wa */
2807 ret_val = hw->phy.ops.read_reg(hw, HV_PM_CTRL,
2811 pm_phy_reg &= ~HV_PM_CTRL_K1_ENABLE;
2812 ret_val = hw->phy.ops.write_reg(hw, HV_PM_CTRL,
2818 mac_reg = E1000_READ_REG(hw, E1000_FEXTNVM4);
2819 mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
2820 mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
2821 E1000_WRITE_REG(hw, E1000_FEXTNVM4, mac_reg);
2829 * e1000_gate_hw_phy_config_ich8lan - disable PHY config via hardware
2830 * @hw: pointer to the HW structure
2831 * @gate: boolean set to TRUE to gate, FALSE to ungate
2833 * Gate/ungate the automatic PHY configuration via hardware; perform
2834 * the configuration via software instead.
2836 static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate)
2840 DEBUGFUNC("e1000_gate_hw_phy_config_ich8lan");
2842 if (hw->mac.type < e1000_pch2lan)
2845 extcnf_ctrl = E1000_READ_REG(hw, E1000_EXTCNF_CTRL);
2848 extcnf_ctrl |= E1000_EXTCNF_CTRL_GATE_PHY_CFG;
2850 extcnf_ctrl &= ~E1000_EXTCNF_CTRL_GATE_PHY_CFG;
2852 E1000_WRITE_REG(hw, E1000_EXTCNF_CTRL, extcnf_ctrl);
2856 * e1000_lan_init_done_ich8lan - Check for PHY config completion
2857 * @hw: pointer to the HW structure
2859 * Check the appropriate indication the MAC has finished configuring the
2860 * PHY after a software reset.
2862 static void e1000_lan_init_done_ich8lan(struct e1000_hw *hw)
2864 u32 data, loop = E1000_ICH8_LAN_INIT_TIMEOUT;
2866 DEBUGFUNC("e1000_lan_init_done_ich8lan");
2868 /* Wait for basic configuration completes before proceeding */
2870 data = E1000_READ_REG(hw, E1000_STATUS);
2871 data &= E1000_STATUS_LAN_INIT_DONE;
2873 } while ((!data) && --loop);
2875 /* If basic configuration is incomplete before the above loop
2876 * count reaches 0, loading the configuration from NVM will
2877 * leave the PHY in a bad state possibly resulting in no link.
2880 DEBUGOUT("LAN_INIT_DONE not set, increase timeout\n");
2882 /* Clear the Init Done bit for the next init event */
2883 data = E1000_READ_REG(hw, E1000_STATUS);
2884 data &= ~E1000_STATUS_LAN_INIT_DONE;
2885 E1000_WRITE_REG(hw, E1000_STATUS, data);
2889 * e1000_post_phy_reset_ich8lan - Perform steps required after a PHY reset
2890 * @hw: pointer to the HW structure
2892 static s32 e1000_post_phy_reset_ich8lan(struct e1000_hw *hw)
2894 s32 ret_val = E1000_SUCCESS;
2897 DEBUGFUNC("e1000_post_phy_reset_ich8lan");
2899 if (hw->phy.ops.check_reset_block(hw))
2900 return E1000_SUCCESS;
2902 /* Allow time for h/w to get to quiescent state after reset */
2905 /* Perform any necessary post-reset workarounds */
2906 switch (hw->mac.type) {
2908 ret_val = e1000_hv_phy_workarounds_ich8lan(hw);
2913 ret_val = e1000_lv_phy_workarounds_ich8lan(hw);
2921 /* Clear the host wakeup bit after lcd reset */
2922 if (hw->mac.type >= e1000_pchlan) {
2923 hw->phy.ops.read_reg(hw, BM_PORT_GEN_CFG, ®);
2924 reg &= ~BM_WUC_HOST_WU_BIT;
2925 hw->phy.ops.write_reg(hw, BM_PORT_GEN_CFG, reg);
2928 /* Configure the LCD with the extended configuration region in NVM */
2929 ret_val = e1000_sw_lcd_config_ich8lan(hw);
2933 /* Configure the LCD with the OEM bits in NVM */
2934 ret_val = e1000_oem_bits_config_ich8lan(hw, TRUE);
2936 if (hw->mac.type == e1000_pch2lan) {
2937 /* Ungate automatic PHY configuration on non-managed 82579 */
2938 if (!(E1000_READ_REG(hw, E1000_FWSM) &
2939 E1000_ICH_FWSM_FW_VALID)) {
2941 e1000_gate_hw_phy_config_ich8lan(hw, FALSE);
2944 /* Set EEE LPI Update Timer to 200usec */
2945 ret_val = hw->phy.ops.acquire(hw);
2948 ret_val = e1000_write_emi_reg_locked(hw,
2949 I82579_LPI_UPDATE_TIMER,
2951 hw->phy.ops.release(hw);
2958 * e1000_phy_hw_reset_ich8lan - Performs a PHY reset
2959 * @hw: pointer to the HW structure
2962 * This is a function pointer entry point called by drivers
2963 * or other shared routines.
2965 static s32 e1000_phy_hw_reset_ich8lan(struct e1000_hw *hw)
2967 s32 ret_val = E1000_SUCCESS;
2969 DEBUGFUNC("e1000_phy_hw_reset_ich8lan");
2971 /* Gate automatic PHY configuration by hardware on non-managed 82579 */
2972 if ((hw->mac.type == e1000_pch2lan) &&
2973 !(E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID))
2974 e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
2976 ret_val = e1000_phy_hw_reset_generic(hw);
2980 return e1000_post_phy_reset_ich8lan(hw);
2984 * e1000_set_lplu_state_pchlan - Set Low Power Link Up state
2985 * @hw: pointer to the HW structure
2986 * @active: TRUE to enable LPLU, FALSE to disable
2988 * Sets the LPLU state according to the active flag. For PCH, if OEM write
2989 * bit are disabled in the NVM, writing the LPLU bits in the MAC will not set
2990 * the phy speed. This function will manually set the LPLU bit and restart
2991 * auto-neg as hw would do. D3 and D0 LPLU will call the same function
2992 * since it configures the same bit.
2994 static s32 e1000_set_lplu_state_pchlan(struct e1000_hw *hw, bool active)
2999 DEBUGFUNC("e1000_set_lplu_state_pchlan");
3000 ret_val = hw->phy.ops.read_reg(hw, HV_OEM_BITS, &oem_reg);
3005 oem_reg |= HV_OEM_BITS_LPLU;
3007 oem_reg &= ~HV_OEM_BITS_LPLU;
3009 if (!hw->phy.ops.check_reset_block(hw))
3010 oem_reg |= HV_OEM_BITS_RESTART_AN;
3012 return hw->phy.ops.write_reg(hw, HV_OEM_BITS, oem_reg);
3016 * e1000_set_d0_lplu_state_ich8lan - Set Low Power Linkup D0 state
3017 * @hw: pointer to the HW structure
3018 * @active: TRUE to enable LPLU, FALSE to disable
3020 * Sets the LPLU D0 state according to the active flag. When
3021 * activating LPLU this function also disables smart speed
3022 * and vice versa. LPLU will not be activated unless the
3023 * device autonegotiation advertisement meets standards of
3024 * either 10 or 10/100 or 10/100/1000 at all duplexes.
3025 * This is a function pointer entry point only called by
3026 * PHY setup routines.
3028 static s32 e1000_set_d0_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
3030 struct e1000_phy_info *phy = &hw->phy;
3032 s32 ret_val = E1000_SUCCESS;
3035 DEBUGFUNC("e1000_set_d0_lplu_state_ich8lan");
3037 if (phy->type == e1000_phy_ife)
3038 return E1000_SUCCESS;
3040 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
3043 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
3044 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3046 if (phy->type != e1000_phy_igp_3)
3047 return E1000_SUCCESS;
3049 /* Call gig speed drop workaround on LPLU before accessing
3052 if (hw->mac.type == e1000_ich8lan)
3053 e1000_gig_downshift_workaround_ich8lan(hw);
3055 /* When LPLU is enabled, we should disable SmartSpeed */
3056 ret_val = phy->ops.read_reg(hw,
3057 IGP01E1000_PHY_PORT_CONFIG,
3061 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3062 ret_val = phy->ops.write_reg(hw,
3063 IGP01E1000_PHY_PORT_CONFIG,
3068 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
3069 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3071 if (phy->type != e1000_phy_igp_3)
3072 return E1000_SUCCESS;
3074 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
3075 * during Dx states where the power conservation is most
3076 * important. During driver activity we should enable
3077 * SmartSpeed, so performance is maintained.
3079 if (phy->smart_speed == e1000_smart_speed_on) {
3080 ret_val = phy->ops.read_reg(hw,
3081 IGP01E1000_PHY_PORT_CONFIG,
3086 data |= IGP01E1000_PSCFR_SMART_SPEED;
3087 ret_val = phy->ops.write_reg(hw,
3088 IGP01E1000_PHY_PORT_CONFIG,
3092 } else if (phy->smart_speed == e1000_smart_speed_off) {
3093 ret_val = phy->ops.read_reg(hw,
3094 IGP01E1000_PHY_PORT_CONFIG,
3099 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3100 ret_val = phy->ops.write_reg(hw,
3101 IGP01E1000_PHY_PORT_CONFIG,
3108 return E1000_SUCCESS;
3112 * e1000_set_d3_lplu_state_ich8lan - Set Low Power Linkup D3 state
3113 * @hw: pointer to the HW structure
3114 * @active: TRUE to enable LPLU, FALSE to disable
3116 * Sets the LPLU D3 state according to the active flag. When
3117 * activating LPLU this function also disables smart speed
3118 * and vice versa. LPLU will not be activated unless the
3119 * device autonegotiation advertisement meets standards of
3120 * either 10 or 10/100 or 10/100/1000 at all duplexes.
3121 * This is a function pointer entry point only called by
3122 * PHY setup routines.
3124 static s32 e1000_set_d3_lplu_state_ich8lan(struct e1000_hw *hw, bool active)
3126 struct e1000_phy_info *phy = &hw->phy;
3128 s32 ret_val = E1000_SUCCESS;
3131 DEBUGFUNC("e1000_set_d3_lplu_state_ich8lan");
3133 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
3136 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
3137 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3139 if (phy->type != e1000_phy_igp_3)
3140 return E1000_SUCCESS;
3142 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
3143 * during Dx states where the power conservation is most
3144 * important. During driver activity we should enable
3145 * SmartSpeed, so performance is maintained.
3147 if (phy->smart_speed == e1000_smart_speed_on) {
3148 ret_val = phy->ops.read_reg(hw,
3149 IGP01E1000_PHY_PORT_CONFIG,
3154 data |= IGP01E1000_PSCFR_SMART_SPEED;
3155 ret_val = phy->ops.write_reg(hw,
3156 IGP01E1000_PHY_PORT_CONFIG,
3160 } else if (phy->smart_speed == e1000_smart_speed_off) {
3161 ret_val = phy->ops.read_reg(hw,
3162 IGP01E1000_PHY_PORT_CONFIG,
3167 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3168 ret_val = phy->ops.write_reg(hw,
3169 IGP01E1000_PHY_PORT_CONFIG,
3174 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
3175 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
3176 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
3177 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
3178 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
3180 if (phy->type != e1000_phy_igp_3)
3181 return E1000_SUCCESS;
3183 /* Call gig speed drop workaround on LPLU before accessing
3186 if (hw->mac.type == e1000_ich8lan)
3187 e1000_gig_downshift_workaround_ich8lan(hw);
3189 /* When LPLU is enabled, we should disable SmartSpeed */
3190 ret_val = phy->ops.read_reg(hw,
3191 IGP01E1000_PHY_PORT_CONFIG,
3196 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
3197 ret_val = phy->ops.write_reg(hw,
3198 IGP01E1000_PHY_PORT_CONFIG,
3206 * e1000_valid_nvm_bank_detect_ich8lan - finds out the valid bank 0 or 1
3207 * @hw: pointer to the HW structure
3208 * @bank: pointer to the variable that returns the active bank
3210 * Reads signature byte from the NVM using the flash access registers.
3211 * Word 0x13 bits 15:14 = 10b indicate a valid signature for that bank.
3213 static s32 e1000_valid_nvm_bank_detect_ich8lan(struct e1000_hw *hw, u32 *bank)
3216 struct e1000_nvm_info *nvm = &hw->nvm;
3217 u32 bank1_offset = nvm->flash_bank_size * sizeof(u16);
3218 u32 act_offset = E1000_ICH_NVM_SIG_WORD * 2 + 1;
3222 DEBUGFUNC("e1000_valid_nvm_bank_detect_ich8lan");
3224 switch (hw->mac.type) {
3227 eecd = E1000_READ_REG(hw, E1000_EECD);
3228 if ((eecd & E1000_EECD_SEC1VAL_VALID_MASK) ==
3229 E1000_EECD_SEC1VAL_VALID_MASK) {
3230 if (eecd & E1000_EECD_SEC1VAL)
3235 return E1000_SUCCESS;
3237 DEBUGOUT("Unable to determine valid NVM bank via EEC - reading flash signature\n");
3240 /* set bank to 0 in case flash read fails */
3244 ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset,
3248 if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
3249 E1000_ICH_NVM_SIG_VALUE) {
3251 return E1000_SUCCESS;
3255 ret_val = e1000_read_flash_byte_ich8lan(hw, act_offset +
3260 if ((sig_byte & E1000_ICH_NVM_VALID_SIG_MASK) ==
3261 E1000_ICH_NVM_SIG_VALUE) {
3263 return E1000_SUCCESS;
3266 DEBUGOUT("ERROR: No valid NVM bank present\n");
3267 return -E1000_ERR_NVM;
3272 * e1000_read_nvm_ich8lan - Read word(s) from the NVM
3273 * @hw: pointer to the HW structure
3274 * @offset: The offset (in bytes) of the word(s) to read.
3275 * @words: Size of data to read in words
3276 * @data: Pointer to the word(s) to read at offset.
3278 * Reads a word(s) from the NVM using the flash access registers.
3280 static s32 e1000_read_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
3283 struct e1000_nvm_info *nvm = &hw->nvm;
3284 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3286 s32 ret_val = E1000_SUCCESS;
3290 DEBUGFUNC("e1000_read_nvm_ich8lan");
3292 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
3294 DEBUGOUT("nvm parameter(s) out of bounds\n");
3295 ret_val = -E1000_ERR_NVM;
3299 nvm->ops.acquire(hw);
3301 ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
3302 if (ret_val != E1000_SUCCESS) {
3303 DEBUGOUT("Could not detect valid bank, assuming bank 0\n");
3307 act_offset = (bank) ? nvm->flash_bank_size : 0;
3308 act_offset += offset;
3310 ret_val = E1000_SUCCESS;
3311 for (i = 0; i < words; i++) {
3312 if (dev_spec->shadow_ram[offset+i].modified) {
3313 data[i] = dev_spec->shadow_ram[offset+i].value;
3315 ret_val = e1000_read_flash_word_ich8lan(hw,
3324 nvm->ops.release(hw);
3328 DEBUGOUT1("NVM read error: %d\n", ret_val);
3334 * e1000_flash_cycle_init_ich8lan - Initialize flash
3335 * @hw: pointer to the HW structure
3337 * This function does initial flash setup so that a new read/write/erase cycle
3340 static s32 e1000_flash_cycle_init_ich8lan(struct e1000_hw *hw)
3342 union ich8_hws_flash_status hsfsts;
3343 s32 ret_val = -E1000_ERR_NVM;
3345 DEBUGFUNC("e1000_flash_cycle_init_ich8lan");
3347 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3349 /* Check if the flash descriptor is valid */
3350 if (!hsfsts.hsf_status.fldesvalid) {
3351 DEBUGOUT("Flash descriptor invalid. SW Sequencing must be used.\n");
3352 return -E1000_ERR_NVM;
3355 /* Clear FCERR and DAEL in hw status by writing 1 */
3356 hsfsts.hsf_status.flcerr = 1;
3357 hsfsts.hsf_status.dael = 1;
3358 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFSTS, hsfsts.regval);
3360 /* Either we should have a hardware SPI cycle in progress
3361 * bit to check against, in order to start a new cycle or
3362 * FDONE bit should be changed in the hardware so that it
3363 * is 1 after hardware reset, which can then be used as an
3364 * indication whether a cycle is in progress or has been
3368 if (!hsfsts.hsf_status.flcinprog) {
3369 /* There is no cycle running at present,
3370 * so we can start a cycle.
3371 * Begin by setting Flash Cycle Done.
3373 hsfsts.hsf_status.flcdone = 1;
3374 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFSTS, hsfsts.regval);
3375 ret_val = E1000_SUCCESS;
3379 /* Otherwise poll for sometime so the current
3380 * cycle has a chance to end before giving up.
3382 for (i = 0; i < ICH_FLASH_READ_COMMAND_TIMEOUT; i++) {
3383 hsfsts.regval = E1000_READ_FLASH_REG16(hw,
3385 if (!hsfsts.hsf_status.flcinprog) {
3386 ret_val = E1000_SUCCESS;
3391 if (ret_val == E1000_SUCCESS) {
3392 /* Successful in waiting for previous cycle to timeout,
3393 * now set the Flash Cycle Done.
3395 hsfsts.hsf_status.flcdone = 1;
3396 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFSTS,
3399 DEBUGOUT("Flash controller busy, cannot get access\n");
3407 * e1000_flash_cycle_ich8lan - Starts flash cycle (read/write/erase)
3408 * @hw: pointer to the HW structure
3409 * @timeout: maximum time to wait for completion
3411 * This function starts a flash cycle and waits for its completion.
3413 static s32 e1000_flash_cycle_ich8lan(struct e1000_hw *hw, u32 timeout)
3415 union ich8_hws_flash_ctrl hsflctl;
3416 union ich8_hws_flash_status hsfsts;
3419 DEBUGFUNC("e1000_flash_cycle_ich8lan");
3421 /* Start a cycle by writing 1 in Flash Cycle Go in Hw Flash Control */
3422 hsflctl.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
3423 hsflctl.hsf_ctrl.flcgo = 1;
3425 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL, hsflctl.regval);
3427 /* wait till FDONE bit is set to 1 */
3429 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3430 if (hsfsts.hsf_status.flcdone)
3433 } while (i++ < timeout);
3435 if (hsfsts.hsf_status.flcdone && !hsfsts.hsf_status.flcerr)
3436 return E1000_SUCCESS;
3438 return -E1000_ERR_NVM;
3442 * e1000_read_flash_word_ich8lan - Read word from flash
3443 * @hw: pointer to the HW structure
3444 * @offset: offset to data location
3445 * @data: pointer to the location for storing the data
3447 * Reads the flash word at offset into data. Offset is converted
3448 * to bytes before read.
3450 static s32 e1000_read_flash_word_ich8lan(struct e1000_hw *hw, u32 offset,
3453 DEBUGFUNC("e1000_read_flash_word_ich8lan");
3456 return -E1000_ERR_NVM;
3458 /* Must convert offset into bytes. */
3461 return e1000_read_flash_data_ich8lan(hw, offset, 2, data);
3465 * e1000_read_flash_byte_ich8lan - Read byte from flash
3466 * @hw: pointer to the HW structure
3467 * @offset: The offset of the byte to read.
3468 * @data: Pointer to a byte to store the value read.
3470 * Reads a single byte from the NVM using the flash access registers.
3472 static s32 e1000_read_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
3478 ret_val = e1000_read_flash_data_ich8lan(hw, offset, 1, &word);
3485 return E1000_SUCCESS;
3489 * e1000_read_flash_data_ich8lan - Read byte or word from NVM
3490 * @hw: pointer to the HW structure
3491 * @offset: The offset (in bytes) of the byte or word to read.
3492 * @size: Size of data to read, 1=byte 2=word
3493 * @data: Pointer to the word to store the value read.
3495 * Reads a byte or word from the NVM using the flash access registers.
3497 static s32 e1000_read_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
3500 union ich8_hws_flash_status hsfsts;
3501 union ich8_hws_flash_ctrl hsflctl;
3502 u32 flash_linear_addr;
3504 s32 ret_val = -E1000_ERR_NVM;
3507 DEBUGFUNC("e1000_read_flash_data_ich8lan");
3509 if (size < 1 || size > 2 || offset > ICH_FLASH_LINEAR_ADDR_MASK)
3510 return -E1000_ERR_NVM;
3511 flash_linear_addr = ((ICH_FLASH_LINEAR_ADDR_MASK & offset) +
3512 hw->nvm.flash_base_addr);
3517 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3518 if (ret_val != E1000_SUCCESS)
3520 hsflctl.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
3522 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
3523 hsflctl.hsf_ctrl.fldbcount = size - 1;
3524 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_READ;
3525 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL, hsflctl.regval);
3526 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FADDR, flash_linear_addr);
3528 ret_val = e1000_flash_cycle_ich8lan(hw,
3529 ICH_FLASH_READ_COMMAND_TIMEOUT);
3531 /* Check if FCERR is set to 1, if set to 1, clear it
3532 * and try the whole sequence a few more times, else
3533 * read in (shift in) the Flash Data0, the order is
3534 * least significant byte first msb to lsb
3536 if (ret_val == E1000_SUCCESS) {
3537 flash_data = E1000_READ_FLASH_REG(hw, ICH_FLASH_FDATA0);
3539 *data = (u8)(flash_data & 0x000000FF);
3541 *data = (u16)(flash_data & 0x0000FFFF);
3544 /* If we've gotten here, then things are probably
3545 * completely hosed, but if the error condition is
3546 * detected, it won't hurt to give it another try...
3547 * ICH_FLASH_CYCLE_REPEAT_COUNT times.
3549 hsfsts.regval = E1000_READ_FLASH_REG16(hw,
3551 if (hsfsts.hsf_status.flcerr) {
3552 /* Repeat for some time before giving up. */
3554 } else if (!hsfsts.hsf_status.flcdone) {
3555 DEBUGOUT("Timeout error - flash cycle did not complete.\n");
3559 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
3566 * e1000_write_nvm_ich8lan - Write word(s) to the NVM
3567 * @hw: pointer to the HW structure
3568 * @offset: The offset (in bytes) of the word(s) to write.
3569 * @words: Size of data to write in words
3570 * @data: Pointer to the word(s) to write at offset.
3572 * Writes a byte or word to the NVM using the flash access registers.
3574 static s32 e1000_write_nvm_ich8lan(struct e1000_hw *hw, u16 offset, u16 words,
3577 struct e1000_nvm_info *nvm = &hw->nvm;
3578 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3581 DEBUGFUNC("e1000_write_nvm_ich8lan");
3583 if ((offset >= nvm->word_size) || (words > nvm->word_size - offset) ||
3585 DEBUGOUT("nvm parameter(s) out of bounds\n");
3586 return -E1000_ERR_NVM;
3589 nvm->ops.acquire(hw);
3591 for (i = 0; i < words; i++) {
3592 dev_spec->shadow_ram[offset+i].modified = TRUE;
3593 dev_spec->shadow_ram[offset+i].value = data[i];
3596 nvm->ops.release(hw);
3598 return E1000_SUCCESS;
3602 * e1000_update_nvm_checksum_ich8lan - Update the checksum for NVM
3603 * @hw: pointer to the HW structure
3605 * The NVM checksum is updated by calling the generic update_nvm_checksum,
3606 * which writes the checksum to the shadow ram. The changes in the shadow
3607 * ram are then committed to the EEPROM by processing each bank at a time
3608 * checking for the modified bit and writing only the pending changes.
3609 * After a successful commit, the shadow ram is cleared and is ready for
3612 static s32 e1000_update_nvm_checksum_ich8lan(struct e1000_hw *hw)
3614 struct e1000_nvm_info *nvm = &hw->nvm;
3615 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
3616 u32 i, act_offset, new_bank_offset, old_bank_offset, bank;
3620 DEBUGFUNC("e1000_update_nvm_checksum_ich8lan");
3622 ret_val = e1000_update_nvm_checksum_generic(hw);
3626 if (nvm->type != e1000_nvm_flash_sw)
3629 nvm->ops.acquire(hw);
3631 /* We're writing to the opposite bank so if we're on bank 1,
3632 * write to bank 0 etc. We also need to erase the segment that
3633 * is going to be written
3635 ret_val = e1000_valid_nvm_bank_detect_ich8lan(hw, &bank);
3636 if (ret_val != E1000_SUCCESS) {
3637 DEBUGOUT("Could not detect valid bank, assuming bank 0\n");
3642 new_bank_offset = nvm->flash_bank_size;
3643 old_bank_offset = 0;
3644 ret_val = e1000_erase_flash_bank_ich8lan(hw, 1);
3648 old_bank_offset = nvm->flash_bank_size;
3649 new_bank_offset = 0;
3650 ret_val = e1000_erase_flash_bank_ich8lan(hw, 0);
3654 for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) {
3655 if (dev_spec->shadow_ram[i].modified) {
3656 data = dev_spec->shadow_ram[i].value;
3658 ret_val = e1000_read_flash_word_ich8lan(hw, i +
3664 /* If the word is 0x13, then make sure the signature bits
3665 * (15:14) are 11b until the commit has completed.
3666 * This will allow us to write 10b which indicates the
3667 * signature is valid. We want to do this after the write
3668 * has completed so that we don't mark the segment valid
3669 * while the write is still in progress
3671 if (i == E1000_ICH_NVM_SIG_WORD)
3672 data |= E1000_ICH_NVM_SIG_MASK;
3674 /* Convert offset to bytes. */
3675 act_offset = (i + new_bank_offset) << 1;
3679 /* Write the bytes to the new bank. */
3680 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
3687 ret_val = e1000_retry_write_flash_byte_ich8lan(hw,
3694 /* Don't bother writing the segment valid bits if sector
3695 * programming failed.
3698 DEBUGOUT("Flash commit failed.\n");
3702 /* Finally validate the new segment by setting bit 15:14
3703 * to 10b in word 0x13 , this can be done without an
3704 * erase as well since these bits are 11 to start with
3705 * and we need to change bit 14 to 0b
3707 act_offset = new_bank_offset + E1000_ICH_NVM_SIG_WORD;
3708 ret_val = e1000_read_flash_word_ich8lan(hw, act_offset, &data);
3713 ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset * 2 + 1,
3718 /* And invalidate the previously valid segment by setting
3719 * its signature word (0x13) high_byte to 0b. This can be
3720 * done without an erase because flash erase sets all bits
3721 * to 1's. We can write 1's to 0's without an erase
3723 act_offset = (old_bank_offset + E1000_ICH_NVM_SIG_WORD) * 2 + 1;
3725 ret_val = e1000_retry_write_flash_byte_ich8lan(hw, act_offset, 0);
3730 /* Great! Everything worked, we can now clear the cached entries. */
3731 for (i = 0; i < E1000_SHADOW_RAM_WORDS; i++) {
3732 dev_spec->shadow_ram[i].modified = FALSE;
3733 dev_spec->shadow_ram[i].value = 0xFFFF;
3737 nvm->ops.release(hw);
3739 /* Reload the EEPROM, or else modifications will not appear
3740 * until after the next adapter reset.
3743 nvm->ops.reload(hw);
3749 DEBUGOUT1("NVM update error: %d\n", ret_val);
3755 * e1000_validate_nvm_checksum_ich8lan - Validate EEPROM checksum
3756 * @hw: pointer to the HW structure
3758 * Check to see if checksum needs to be fixed by reading bit 6 in word 0x19.
3759 * If the bit is 0, that the EEPROM had been modified, but the checksum was not
3760 * calculated, in which case we need to calculate the checksum and set bit 6.
3762 static s32 e1000_validate_nvm_checksum_ich8lan(struct e1000_hw *hw)
3767 u16 valid_csum_mask;
3769 DEBUGFUNC("e1000_validate_nvm_checksum_ich8lan");
3771 /* Read NVM and check Invalid Image CSUM bit. If this bit is 0,
3772 * the checksum needs to be fixed. This bit is an indication that
3773 * the NVM was prepared by OEM software and did not calculate
3774 * the checksum...a likely scenario.
3776 switch (hw->mac.type) {
3779 valid_csum_mask = NVM_COMPAT_VALID_CSUM;
3782 word = NVM_FUTURE_INIT_WORD1;
3783 valid_csum_mask = NVM_FUTURE_INIT_WORD1_VALID_CSUM;
3787 ret_val = hw->nvm.ops.read(hw, word, 1, &data);
3791 if (!(data & valid_csum_mask)) {
3792 data |= valid_csum_mask;
3793 ret_val = hw->nvm.ops.write(hw, word, 1, &data);
3796 ret_val = hw->nvm.ops.update(hw);
3801 return e1000_validate_nvm_checksum_generic(hw);
3805 * e1000_write_flash_data_ich8lan - Writes bytes to the NVM
3806 * @hw: pointer to the HW structure
3807 * @offset: The offset (in bytes) of the byte/word to read.
3808 * @size: Size of data to read, 1=byte 2=word
3809 * @data: The byte(s) to write to the NVM.
3811 * Writes one/two bytes to the NVM using the flash access registers.
3813 static s32 e1000_write_flash_data_ich8lan(struct e1000_hw *hw, u32 offset,
3816 union ich8_hws_flash_status hsfsts;
3817 union ich8_hws_flash_ctrl hsflctl;
3818 u32 flash_linear_addr;
3823 DEBUGFUNC("e1000_write_ich8_data");
3825 if (size < 1 || size > 2 || offset > ICH_FLASH_LINEAR_ADDR_MASK)
3826 return -E1000_ERR_NVM;
3828 flash_linear_addr = ((ICH_FLASH_LINEAR_ADDR_MASK & offset) +
3829 hw->nvm.flash_base_addr);
3834 ret_val = e1000_flash_cycle_init_ich8lan(hw);
3835 if (ret_val != E1000_SUCCESS)
3837 hsflctl.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
3839 /* 0b/1b corresponds to 1 or 2 byte size, respectively. */
3840 hsflctl.hsf_ctrl.fldbcount = size - 1;
3841 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_WRITE;
3842 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL, hsflctl.regval);
3844 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FADDR, flash_linear_addr);
3847 flash_data = (u32)data & 0x00FF;
3849 flash_data = (u32)data;
3851 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FDATA0, flash_data);
3853 /* check if FCERR is set to 1 , if set to 1, clear it
3854 * and try the whole sequence a few more times else done
3857 e1000_flash_cycle_ich8lan(hw,
3858 ICH_FLASH_WRITE_COMMAND_TIMEOUT);
3859 if (ret_val == E1000_SUCCESS)
3862 /* If we're here, then things are most likely
3863 * completely hosed, but if the error condition
3864 * is detected, it won't hurt to give it another
3865 * try...ICH_FLASH_CYCLE_REPEAT_COUNT times.
3867 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3868 if (hsfsts.hsf_status.flcerr)
3869 /* Repeat for some time before giving up. */
3871 if (!hsfsts.hsf_status.flcdone) {
3872 DEBUGOUT("Timeout error - flash cycle did not complete.\n");
3875 } while (count++ < ICH_FLASH_CYCLE_REPEAT_COUNT);
3882 * e1000_write_flash_byte_ich8lan - Write a single byte to NVM
3883 * @hw: pointer to the HW structure
3884 * @offset: The index of the byte to read.
3885 * @data: The byte to write to the NVM.
3887 * Writes a single byte to the NVM using the flash access registers.
3889 static s32 e1000_write_flash_byte_ich8lan(struct e1000_hw *hw, u32 offset,
3892 u16 word = (u16)data;
3894 DEBUGFUNC("e1000_write_flash_byte_ich8lan");
3896 return e1000_write_flash_data_ich8lan(hw, offset, 1, word);
3902 * e1000_retry_write_flash_byte_ich8lan - Writes a single byte to NVM
3903 * @hw: pointer to the HW structure
3904 * @offset: The offset of the byte to write.
3905 * @byte: The byte to write to the NVM.
3907 * Writes a single byte to the NVM using the flash access registers.
3908 * Goes through a retry algorithm before giving up.
3910 static s32 e1000_retry_write_flash_byte_ich8lan(struct e1000_hw *hw,
3911 u32 offset, u8 byte)
3914 u16 program_retries;
3916 DEBUGFUNC("e1000_retry_write_flash_byte_ich8lan");
3918 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
3922 for (program_retries = 0; program_retries < 100; program_retries++) {
3923 DEBUGOUT2("Retrying Byte %2.2X at offset %u\n", byte, offset);
3925 ret_val = e1000_write_flash_byte_ich8lan(hw, offset, byte);
3926 if (ret_val == E1000_SUCCESS)
3929 if (program_retries == 100)
3930 return -E1000_ERR_NVM;
3932 return E1000_SUCCESS;
3936 * e1000_erase_flash_bank_ich8lan - Erase a bank (4k) from NVM
3937 * @hw: pointer to the HW structure
3938 * @bank: 0 for first bank, 1 for second bank, etc.
3940 * Erases the bank specified. Each bank is a 4k block. Banks are 0 based.
3941 * bank N is 4096 * N + flash_reg_addr.
3943 static s32 e1000_erase_flash_bank_ich8lan(struct e1000_hw *hw, u32 bank)
3945 struct e1000_nvm_info *nvm = &hw->nvm;
3946 union ich8_hws_flash_status hsfsts;
3947 union ich8_hws_flash_ctrl hsflctl;
3948 u32 flash_linear_addr;
3949 /* bank size is in 16bit words - adjust to bytes */
3950 u32 flash_bank_size = nvm->flash_bank_size * 2;
3953 s32 j, iteration, sector_size;
3955 DEBUGFUNC("e1000_erase_flash_bank_ich8lan");
3957 hsfsts.regval = E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFSTS);
3959 /* Determine HW Sector size: Read BERASE bits of hw flash status
3961 * 00: The Hw sector is 256 bytes, hence we need to erase 16
3962 * consecutive sectors. The start index for the nth Hw sector
3963 * can be calculated as = bank * 4096 + n * 256
3964 * 01: The Hw sector is 4K bytes, hence we need to erase 1 sector.
3965 * The start index for the nth Hw sector can be calculated
3967 * 10: The Hw sector is 8K bytes, nth sector = bank * 8192
3968 * (ich9 only, otherwise error condition)
3969 * 11: The Hw sector is 64K bytes, nth sector = bank * 65536
3971 switch (hsfsts.hsf_status.berasesz) {
3973 /* Hw sector size 256 */
3974 sector_size = ICH_FLASH_SEG_SIZE_256;
3975 iteration = flash_bank_size / ICH_FLASH_SEG_SIZE_256;
3978 sector_size = ICH_FLASH_SEG_SIZE_4K;
3982 sector_size = ICH_FLASH_SEG_SIZE_8K;
3986 sector_size = ICH_FLASH_SEG_SIZE_64K;
3990 return -E1000_ERR_NVM;
3993 /* Start with the base address, then add the sector offset. */
3994 flash_linear_addr = hw->nvm.flash_base_addr;
3995 flash_linear_addr += (bank) ? flash_bank_size : 0;
3997 for (j = 0; j < iteration; j++) {
3999 u32 timeout = ICH_FLASH_ERASE_COMMAND_TIMEOUT;
4002 ret_val = e1000_flash_cycle_init_ich8lan(hw);
4006 /* Write a value 11 (block Erase) in Flash
4007 * Cycle field in hw flash control
4010 E1000_READ_FLASH_REG16(hw, ICH_FLASH_HSFCTL);
4012 hsflctl.hsf_ctrl.flcycle = ICH_CYCLE_ERASE;
4013 E1000_WRITE_FLASH_REG16(hw, ICH_FLASH_HSFCTL,
4016 /* Write the last 24 bits of an index within the
4017 * block into Flash Linear address field in Flash
4020 flash_linear_addr += (j * sector_size);
4021 E1000_WRITE_FLASH_REG(hw, ICH_FLASH_FADDR,
4024 ret_val = e1000_flash_cycle_ich8lan(hw, timeout);
4025 if (ret_val == E1000_SUCCESS)
4028 /* Check if FCERR is set to 1. If 1,
4029 * clear it and try the whole sequence
4030 * a few more times else Done
4032 hsfsts.regval = E1000_READ_FLASH_REG16(hw,
4034 if (hsfsts.hsf_status.flcerr)
4035 /* repeat for some time before giving up */
4037 else if (!hsfsts.hsf_status.flcdone)
4039 } while (++count < ICH_FLASH_CYCLE_REPEAT_COUNT);
4042 return E1000_SUCCESS;
4046 * e1000_valid_led_default_ich8lan - Set the default LED settings
4047 * @hw: pointer to the HW structure
4048 * @data: Pointer to the LED settings
4050 * Reads the LED default settings from the NVM to data. If the NVM LED
4051 * settings is all 0's or F's, set the LED default to a valid LED default
4054 static s32 e1000_valid_led_default_ich8lan(struct e1000_hw *hw, u16 *data)
4058 DEBUGFUNC("e1000_valid_led_default_ich8lan");
4060 ret_val = hw->nvm.ops.read(hw, NVM_ID_LED_SETTINGS, 1, data);
4062 DEBUGOUT("NVM Read Error\n");
4066 if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF)
4067 *data = ID_LED_DEFAULT_ICH8LAN;
4069 return E1000_SUCCESS;
4073 * e1000_id_led_init_pchlan - store LED configurations
4074 * @hw: pointer to the HW structure
4076 * PCH does not control LEDs via the LEDCTL register, rather it uses
4077 * the PHY LED configuration register.
4079 * PCH also does not have an "always on" or "always off" mode which
4080 * complicates the ID feature. Instead of using the "on" mode to indicate
4081 * in ledctl_mode2 the LEDs to use for ID (see e1000_id_led_init_generic()),
4082 * use "link_up" mode. The LEDs will still ID on request if there is no
4083 * link based on logic in e1000_led_[on|off]_pchlan().
4085 static s32 e1000_id_led_init_pchlan(struct e1000_hw *hw)
4087 struct e1000_mac_info *mac = &hw->mac;
4089 const u32 ledctl_on = E1000_LEDCTL_MODE_LINK_UP;
4090 const u32 ledctl_off = E1000_LEDCTL_MODE_LINK_UP | E1000_PHY_LED0_IVRT;
4091 u16 data, i, temp, shift;
4093 DEBUGFUNC("e1000_id_led_init_pchlan");
4095 /* Get default ID LED modes */
4096 ret_val = hw->nvm.ops.valid_led_default(hw, &data);
4100 mac->ledctl_default = E1000_READ_REG(hw, E1000_LEDCTL);
4101 mac->ledctl_mode1 = mac->ledctl_default;
4102 mac->ledctl_mode2 = mac->ledctl_default;
4104 for (i = 0; i < 4; i++) {
4105 temp = (data >> (i << 2)) & E1000_LEDCTL_LED0_MODE_MASK;
4108 case ID_LED_ON1_DEF2:
4109 case ID_LED_ON1_ON2:
4110 case ID_LED_ON1_OFF2:
4111 mac->ledctl_mode1 &= ~(E1000_PHY_LED0_MASK << shift);
4112 mac->ledctl_mode1 |= (ledctl_on << shift);
4114 case ID_LED_OFF1_DEF2:
4115 case ID_LED_OFF1_ON2:
4116 case ID_LED_OFF1_OFF2:
4117 mac->ledctl_mode1 &= ~(E1000_PHY_LED0_MASK << shift);
4118 mac->ledctl_mode1 |= (ledctl_off << shift);
4125 case ID_LED_DEF1_ON2:
4126 case ID_LED_ON1_ON2:
4127 case ID_LED_OFF1_ON2:
4128 mac->ledctl_mode2 &= ~(E1000_PHY_LED0_MASK << shift);
4129 mac->ledctl_mode2 |= (ledctl_on << shift);
4131 case ID_LED_DEF1_OFF2:
4132 case ID_LED_ON1_OFF2:
4133 case ID_LED_OFF1_OFF2:
4134 mac->ledctl_mode2 &= ~(E1000_PHY_LED0_MASK << shift);
4135 mac->ledctl_mode2 |= (ledctl_off << shift);
4143 return E1000_SUCCESS;
4147 * e1000_get_bus_info_ich8lan - Get/Set the bus type and width
4148 * @hw: pointer to the HW structure
4150 * ICH8 use the PCI Express bus, but does not contain a PCI Express Capability
4151 * register, so the the bus width is hard coded.
4153 static s32 e1000_get_bus_info_ich8lan(struct e1000_hw *hw)
4155 struct e1000_bus_info *bus = &hw->bus;
4158 DEBUGFUNC("e1000_get_bus_info_ich8lan");
4160 ret_val = e1000_get_bus_info_pcie_generic(hw);
4162 /* ICH devices are "PCI Express"-ish. They have
4163 * a configuration space, but do not contain
4164 * PCI Express Capability registers, so bus width
4165 * must be hardcoded.
4167 if (bus->width == e1000_bus_width_unknown)
4168 bus->width = e1000_bus_width_pcie_x1;
4174 * e1000_reset_hw_ich8lan - Reset the hardware
4175 * @hw: pointer to the HW structure
4177 * Does a full reset of the hardware which includes a reset of the PHY and
4180 static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw)
4182 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4187 DEBUGFUNC("e1000_reset_hw_ich8lan");
4189 /* Prevent the PCI-E bus from sticking if there is no TLP connection
4190 * on the last TLP read/write transaction when MAC is reset.
4192 ret_val = e1000_disable_pcie_master_generic(hw);
4194 DEBUGOUT("PCI-E Master disable polling has failed.\n");
4196 DEBUGOUT("Masking off all interrupts\n");
4197 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
4199 /* Disable the Transmit and Receive units. Then delay to allow
4200 * any pending transactions to complete before we hit the MAC
4201 * with the global reset.
4203 E1000_WRITE_REG(hw, E1000_RCTL, 0);
4204 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
4205 E1000_WRITE_FLUSH(hw);
4209 /* Workaround for ICH8 bit corruption issue in FIFO memory */
4210 if (hw->mac.type == e1000_ich8lan) {
4211 /* Set Tx and Rx buffer allocation to 8k apiece. */
4212 E1000_WRITE_REG(hw, E1000_PBA, E1000_PBA_8K);
4213 /* Set Packet Buffer Size to 16k. */
4214 E1000_WRITE_REG(hw, E1000_PBS, E1000_PBS_16K);
4217 if (hw->mac.type == e1000_pchlan) {
4218 /* Save the NVM K1 bit setting*/
4219 ret_val = e1000_read_nvm(hw, E1000_NVM_K1_CONFIG, 1, &kum_cfg);
4223 if (kum_cfg & E1000_NVM_K1_ENABLE)
4224 dev_spec->nvm_k1_enabled = TRUE;
4226 dev_spec->nvm_k1_enabled = FALSE;
4229 ctrl = E1000_READ_REG(hw, E1000_CTRL);
4231 if (!hw->phy.ops.check_reset_block(hw)) {
4232 /* Full-chip reset requires MAC and PHY reset at the same
4233 * time to make sure the interface between MAC and the
4234 * external PHY is reset.
4236 ctrl |= E1000_CTRL_PHY_RST;
4238 /* Gate automatic PHY configuration by hardware on
4241 if ((hw->mac.type == e1000_pch2lan) &&
4242 !(E1000_READ_REG(hw, E1000_FWSM) & E1000_ICH_FWSM_FW_VALID))
4243 e1000_gate_hw_phy_config_ich8lan(hw, TRUE);
4245 ret_val = e1000_acquire_swflag_ich8lan(hw);
4246 DEBUGOUT("Issuing a global reset to ich8lan\n");
4247 E1000_WRITE_REG(hw, E1000_CTRL, (ctrl | E1000_CTRL_RST));
4248 /* cannot issue a flush here because it hangs the hardware */
4251 /* Set Phy Config Counter to 50msec */
4252 if (hw->mac.type == e1000_pch2lan) {
4253 reg = E1000_READ_REG(hw, E1000_FEXTNVM3);
4254 reg &= ~E1000_FEXTNVM3_PHY_CFG_COUNTER_MASK;
4255 reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC;
4256 E1000_WRITE_REG(hw, E1000_FEXTNVM3, reg);
4260 E1000_MUTEX_UNLOCK(&hw->dev_spec.ich8lan.swflag_mutex);
4262 if (ctrl & E1000_CTRL_PHY_RST) {
4263 ret_val = hw->phy.ops.get_cfg_done(hw);
4267 ret_val = e1000_post_phy_reset_ich8lan(hw);
4272 /* For PCH, this write will make sure that any noise
4273 * will be detected as a CRC error and be dropped rather than show up
4274 * as a bad packet to the DMA engine.
4276 if (hw->mac.type == e1000_pchlan)
4277 E1000_WRITE_REG(hw, E1000_CRC_OFFSET, 0x65656565);
4279 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
4280 E1000_READ_REG(hw, E1000_ICR);
4282 reg = E1000_READ_REG(hw, E1000_KABGTXD);
4283 reg |= E1000_KABGTXD_BGSQLBIAS;
4284 E1000_WRITE_REG(hw, E1000_KABGTXD, reg);
4286 return E1000_SUCCESS;
4290 * e1000_init_hw_ich8lan - Initialize the hardware
4291 * @hw: pointer to the HW structure
4293 * Prepares the hardware for transmit and receive by doing the following:
4294 * - initialize hardware bits
4295 * - initialize LED identification
4296 * - setup receive address registers
4297 * - setup flow control
4298 * - setup transmit descriptors
4299 * - clear statistics
4301 static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw)
4303 struct e1000_mac_info *mac = &hw->mac;
4304 u32 ctrl_ext, txdctl, snoop;
4308 DEBUGFUNC("e1000_init_hw_ich8lan");
4310 e1000_initialize_hw_bits_ich8lan(hw);
4312 /* Initialize identification LED */
4313 ret_val = mac->ops.id_led_init(hw);
4314 /* An error is not fatal and we should not stop init due to this */
4316 DEBUGOUT("Error initializing identification LED\n");
4318 /* Setup the receive address. */
4319 e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
4321 /* Zero out the Multicast HASH table */
4322 DEBUGOUT("Zeroing the MTA\n");
4323 for (i = 0; i < mac->mta_reg_count; i++)
4324 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
4326 /* The 82578 Rx buffer will stall if wakeup is enabled in host and
4327 * the ME. Disable wakeup by clearing the host wakeup bit.
4328 * Reset the phy after disabling host wakeup to reset the Rx buffer.
4330 if (hw->phy.type == e1000_phy_82578) {
4331 hw->phy.ops.read_reg(hw, BM_PORT_GEN_CFG, &i);
4332 i &= ~BM_WUC_HOST_WU_BIT;
4333 hw->phy.ops.write_reg(hw, BM_PORT_GEN_CFG, i);
4334 ret_val = e1000_phy_hw_reset_ich8lan(hw);
4339 /* Setup link and flow control */
4340 ret_val = mac->ops.setup_link(hw);
4342 /* Set the transmit descriptor write-back policy for both queues */
4343 txdctl = E1000_READ_REG(hw, E1000_TXDCTL(0));
4344 txdctl = ((txdctl & ~E1000_TXDCTL_WTHRESH) |
4345 E1000_TXDCTL_FULL_TX_DESC_WB);
4346 txdctl = ((txdctl & ~E1000_TXDCTL_PTHRESH) |
4347 E1000_TXDCTL_MAX_TX_DESC_PREFETCH);
4348 E1000_WRITE_REG(hw, E1000_TXDCTL(0), txdctl);
4349 txdctl = E1000_READ_REG(hw, E1000_TXDCTL(1));
4350 txdctl = ((txdctl & ~E1000_TXDCTL_WTHRESH) |
4351 E1000_TXDCTL_FULL_TX_DESC_WB);
4352 txdctl = ((txdctl & ~E1000_TXDCTL_PTHRESH) |
4353 E1000_TXDCTL_MAX_TX_DESC_PREFETCH);
4354 E1000_WRITE_REG(hw, E1000_TXDCTL(1), txdctl);
4356 /* ICH8 has opposite polarity of no_snoop bits.
4357 * By default, we should use snoop behavior.
4359 if (mac->type == e1000_ich8lan)
4360 snoop = PCIE_ICH8_SNOOP_ALL;
4362 snoop = (u32) ~(PCIE_NO_SNOOP_ALL);
4363 e1000_set_pcie_no_snoop_generic(hw, snoop);
4365 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
4366 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
4367 E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
4369 /* Clear all of the statistics registers (clear on read). It is
4370 * important that we do this after we have tried to establish link
4371 * because the symbol error count will increment wildly if there
4374 e1000_clear_hw_cntrs_ich8lan(hw);
4380 * e1000_initialize_hw_bits_ich8lan - Initialize required hardware bits
4381 * @hw: pointer to the HW structure
4383 * Sets/Clears required hardware bits necessary for correctly setting up the
4384 * hardware for transmit and receive.
4386 static void e1000_initialize_hw_bits_ich8lan(struct e1000_hw *hw)
4390 DEBUGFUNC("e1000_initialize_hw_bits_ich8lan");
4392 /* Extended Device Control */
4393 reg = E1000_READ_REG(hw, E1000_CTRL_EXT);
4395 /* Enable PHY low-power state when MAC is at D3 w/o WoL */
4396 if (hw->mac.type >= e1000_pchlan)
4397 reg |= E1000_CTRL_EXT_PHYPDEN;
4398 E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg);
4400 /* Transmit Descriptor Control 0 */
4401 reg = E1000_READ_REG(hw, E1000_TXDCTL(0));
4403 E1000_WRITE_REG(hw, E1000_TXDCTL(0), reg);
4405 /* Transmit Descriptor Control 1 */
4406 reg = E1000_READ_REG(hw, E1000_TXDCTL(1));
4408 E1000_WRITE_REG(hw, E1000_TXDCTL(1), reg);
4410 /* Transmit Arbitration Control 0 */
4411 reg = E1000_READ_REG(hw, E1000_TARC(0));
4412 if (hw->mac.type == e1000_ich8lan)
4413 reg |= (1 << 28) | (1 << 29);
4414 reg |= (1 << 23) | (1 << 24) | (1 << 26) | (1 << 27);
4415 E1000_WRITE_REG(hw, E1000_TARC(0), reg);
4417 /* Transmit Arbitration Control 1 */
4418 reg = E1000_READ_REG(hw, E1000_TARC(1));
4419 if (E1000_READ_REG(hw, E1000_TCTL) & E1000_TCTL_MULR)
4423 reg |= (1 << 24) | (1 << 26) | (1 << 30);
4424 E1000_WRITE_REG(hw, E1000_TARC(1), reg);
4427 if (hw->mac.type == e1000_ich8lan) {
4428 reg = E1000_READ_REG(hw, E1000_STATUS);
4430 E1000_WRITE_REG(hw, E1000_STATUS, reg);
4433 /* work-around descriptor data corruption issue during nfs v2 udp
4434 * traffic, just disable the nfs filtering capability
4436 reg = E1000_READ_REG(hw, E1000_RFCTL);
4437 reg |= (E1000_RFCTL_NFSW_DIS | E1000_RFCTL_NFSR_DIS);
4439 /* Disable IPv6 extension header parsing because some malformed
4440 * IPv6 headers can hang the Rx.
4442 if (hw->mac.type == e1000_ich8lan)
4443 reg |= (E1000_RFCTL_IPV6_EX_DIS | E1000_RFCTL_NEW_IPV6_EXT_DIS);
4444 E1000_WRITE_REG(hw, E1000_RFCTL, reg);
4446 /* Enable ECC on Lynxpoint */
4447 if (hw->mac.type == e1000_pch_lpt) {
4448 reg = E1000_READ_REG(hw, E1000_PBECCSTS);
4449 reg |= E1000_PBECCSTS_ECC_ENABLE;
4450 E1000_WRITE_REG(hw, E1000_PBECCSTS, reg);
4452 reg = E1000_READ_REG(hw, E1000_CTRL);
4453 reg |= E1000_CTRL_MEHE;
4454 E1000_WRITE_REG(hw, E1000_CTRL, reg);
4461 * e1000_setup_link_ich8lan - Setup flow control and link settings
4462 * @hw: pointer to the HW structure
4464 * Determines which flow control settings to use, then configures flow
4465 * control. Calls the appropriate media-specific link configuration
4466 * function. Assuming the adapter has a valid link partner, a valid link
4467 * should be established. Assumes the hardware has previously been reset
4468 * and the transmitter and receiver are not enabled.
4470 static s32 e1000_setup_link_ich8lan(struct e1000_hw *hw)
4474 DEBUGFUNC("e1000_setup_link_ich8lan");
4476 if (hw->phy.ops.check_reset_block(hw))
4477 return E1000_SUCCESS;
4479 /* ICH parts do not have a word in the NVM to determine
4480 * the default flow control setting, so we explicitly
4483 if (hw->fc.requested_mode == e1000_fc_default)
4484 hw->fc.requested_mode = e1000_fc_full;
4486 /* Save off the requested flow control mode for use later. Depending
4487 * on the link partner's capabilities, we may or may not use this mode.
4489 hw->fc.current_mode = hw->fc.requested_mode;
4491 DEBUGOUT1("After fix-ups FlowControl is now = %x\n",
4492 hw->fc.current_mode);
4494 /* Continue to configure the copper link. */
4495 ret_val = hw->mac.ops.setup_physical_interface(hw);
4499 E1000_WRITE_REG(hw, E1000_FCTTV, hw->fc.pause_time);
4500 if ((hw->phy.type == e1000_phy_82578) ||
4501 (hw->phy.type == e1000_phy_82579) ||
4502 (hw->phy.type == e1000_phy_i217) ||
4503 (hw->phy.type == e1000_phy_82577)) {
4504 E1000_WRITE_REG(hw, E1000_FCRTV_PCH, hw->fc.refresh_time);
4506 ret_val = hw->phy.ops.write_reg(hw,
4507 PHY_REG(BM_PORT_CTRL_PAGE, 27),
4513 return e1000_set_fc_watermarks_generic(hw);
4517 * e1000_setup_copper_link_ich8lan - Configure MAC/PHY interface
4518 * @hw: pointer to the HW structure
4520 * Configures the kumeran interface to the PHY to wait the appropriate time
4521 * when polling the PHY, then call the generic setup_copper_link to finish
4522 * configuring the copper link.
4524 static s32 e1000_setup_copper_link_ich8lan(struct e1000_hw *hw)
4530 DEBUGFUNC("e1000_setup_copper_link_ich8lan");
4532 ctrl = E1000_READ_REG(hw, E1000_CTRL);
4533 ctrl |= E1000_CTRL_SLU;
4534 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
4535 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
4537 /* Set the mac to wait the maximum time between each iteration
4538 * and increase the max iterations when polling the phy;
4539 * this fixes erroneous timeouts at 10Mbps.
4541 ret_val = e1000_write_kmrn_reg_generic(hw, E1000_KMRNCTRLSTA_TIMEOUTS,
4545 ret_val = e1000_read_kmrn_reg_generic(hw,
4546 E1000_KMRNCTRLSTA_INBAND_PARAM,
4551 ret_val = e1000_write_kmrn_reg_generic(hw,
4552 E1000_KMRNCTRLSTA_INBAND_PARAM,
4557 switch (hw->phy.type) {
4558 case e1000_phy_igp_3:
4559 ret_val = e1000_copper_link_setup_igp(hw);
4564 case e1000_phy_82578:
4565 ret_val = e1000_copper_link_setup_m88(hw);
4569 case e1000_phy_82577:
4570 case e1000_phy_82579:
4571 ret_val = e1000_copper_link_setup_82577(hw);
4576 ret_val = hw->phy.ops.read_reg(hw, IFE_PHY_MDIX_CONTROL,
4581 reg_data &= ~IFE_PMC_AUTO_MDIX;
4583 switch (hw->phy.mdix) {
4585 reg_data &= ~IFE_PMC_FORCE_MDIX;
4588 reg_data |= IFE_PMC_FORCE_MDIX;
4592 reg_data |= IFE_PMC_AUTO_MDIX;
4595 ret_val = hw->phy.ops.write_reg(hw, IFE_PHY_MDIX_CONTROL,
4604 return e1000_setup_copper_link_generic(hw);
4608 * e1000_setup_copper_link_pch_lpt - Configure MAC/PHY interface
4609 * @hw: pointer to the HW structure
4611 * Calls the PHY specific link setup function and then calls the
4612 * generic setup_copper_link to finish configuring the link for
4613 * Lynxpoint PCH devices
4615 static s32 e1000_setup_copper_link_pch_lpt(struct e1000_hw *hw)
4620 DEBUGFUNC("e1000_setup_copper_link_pch_lpt");
4622 ctrl = E1000_READ_REG(hw, E1000_CTRL);
4623 ctrl |= E1000_CTRL_SLU;
4624 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
4625 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
4627 ret_val = e1000_copper_link_setup_82577(hw);
4631 return e1000_setup_copper_link_generic(hw);
4635 * e1000_get_link_up_info_ich8lan - Get current link speed and duplex
4636 * @hw: pointer to the HW structure
4637 * @speed: pointer to store current link speed
4638 * @duplex: pointer to store the current link duplex
4640 * Calls the generic get_speed_and_duplex to retrieve the current link
4641 * information and then calls the Kumeran lock loss workaround for links at
4644 static s32 e1000_get_link_up_info_ich8lan(struct e1000_hw *hw, u16 *speed,
4649 DEBUGFUNC("e1000_get_link_up_info_ich8lan");
4651 ret_val = e1000_get_speed_and_duplex_copper_generic(hw, speed, duplex);
4655 if ((hw->mac.type == e1000_ich8lan) &&
4656 (hw->phy.type == e1000_phy_igp_3) &&
4657 (*speed == SPEED_1000)) {
4658 ret_val = e1000_kmrn_lock_loss_workaround_ich8lan(hw);
4665 * e1000_kmrn_lock_loss_workaround_ich8lan - Kumeran workaround
4666 * @hw: pointer to the HW structure
4668 * Work-around for 82566 Kumeran PCS lock loss:
4669 * On link status change (i.e. PCI reset, speed change) and link is up and
4671 * 0) if workaround is optionally disabled do nothing
4672 * 1) wait 1ms for Kumeran link to come up
4673 * 2) check Kumeran Diagnostic register PCS lock loss bit
4674 * 3) if not set the link is locked (all is good), otherwise...
4676 * 5) repeat up to 10 times
4677 * Note: this is only called for IGP3 copper when speed is 1gb.
4679 static s32 e1000_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw)
4681 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4687 DEBUGFUNC("e1000_kmrn_lock_loss_workaround_ich8lan");
4689 if (!dev_spec->kmrn_lock_loss_workaround_enabled)
4690 return E1000_SUCCESS;
4692 /* Make sure link is up before proceeding. If not just return.
4693 * Attempting this while link is negotiating fouled up link
4696 ret_val = e1000_phy_has_link_generic(hw, 1, 0, &link);
4698 return E1000_SUCCESS;
4700 for (i = 0; i < 10; i++) {
4701 /* read once to clear */
4702 ret_val = hw->phy.ops.read_reg(hw, IGP3_KMRN_DIAG, &data);
4705 /* and again to get new status */
4706 ret_val = hw->phy.ops.read_reg(hw, IGP3_KMRN_DIAG, &data);
4710 /* check for PCS lock */
4711 if (!(data & IGP3_KMRN_DIAG_PCS_LOCK_LOSS))
4712 return E1000_SUCCESS;
4714 /* Issue PHY reset */
4715 hw->phy.ops.reset(hw);
4718 /* Disable GigE link negotiation */
4719 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
4720 phy_ctrl |= (E1000_PHY_CTRL_GBE_DISABLE |
4721 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
4722 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
4724 /* Call gig speed drop workaround on Gig disable before accessing
4727 e1000_gig_downshift_workaround_ich8lan(hw);
4729 /* unable to acquire PCS lock */
4730 return -E1000_ERR_PHY;
4734 * e1000_set_kmrn_lock_loss_workaround_ich8lan - Set Kumeran workaround state
4735 * @hw: pointer to the HW structure
4736 * @state: boolean value used to set the current Kumeran workaround state
4738 * If ICH8, set the current Kumeran workaround state (enabled - TRUE
4739 * /disabled - FALSE).
4741 void e1000_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,
4744 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4746 DEBUGFUNC("e1000_set_kmrn_lock_loss_workaround_ich8lan");
4748 if (hw->mac.type != e1000_ich8lan) {
4749 DEBUGOUT("Workaround applies to ICH8 only.\n");
4753 dev_spec->kmrn_lock_loss_workaround_enabled = state;
4759 * e1000_ipg3_phy_powerdown_workaround_ich8lan - Power down workaround on D3
4760 * @hw: pointer to the HW structure
4762 * Workaround for 82566 power-down on D3 entry:
4763 * 1) disable gigabit link
4764 * 2) write VR power-down enable
4766 * Continue if successful, else issue LCD reset and repeat
4768 void e1000_igp3_phy_powerdown_workaround_ich8lan(struct e1000_hw *hw)
4774 DEBUGFUNC("e1000_igp3_phy_powerdown_workaround_ich8lan");
4776 if (hw->phy.type != e1000_phy_igp_3)
4779 /* Try the workaround twice (if needed) */
4782 reg = E1000_READ_REG(hw, E1000_PHY_CTRL);
4783 reg |= (E1000_PHY_CTRL_GBE_DISABLE |
4784 E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
4785 E1000_WRITE_REG(hw, E1000_PHY_CTRL, reg);
4787 /* Call gig speed drop workaround on Gig disable before
4788 * accessing any PHY registers
4790 if (hw->mac.type == e1000_ich8lan)
4791 e1000_gig_downshift_workaround_ich8lan(hw);
4793 /* Write VR power-down enable */
4794 hw->phy.ops.read_reg(hw, IGP3_VR_CTRL, &data);
4795 data &= ~IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
4796 hw->phy.ops.write_reg(hw, IGP3_VR_CTRL,
4797 data | IGP3_VR_CTRL_MODE_SHUTDOWN);
4799 /* Read it back and test */
4800 hw->phy.ops.read_reg(hw, IGP3_VR_CTRL, &data);
4801 data &= IGP3_VR_CTRL_DEV_POWERDOWN_MODE_MASK;
4802 if ((data == IGP3_VR_CTRL_MODE_SHUTDOWN) || retry)
4805 /* Issue PHY reset and repeat at most one more time */
4806 reg = E1000_READ_REG(hw, E1000_CTRL);
4807 E1000_WRITE_REG(hw, E1000_CTRL, reg | E1000_CTRL_PHY_RST);
4813 * e1000_gig_downshift_workaround_ich8lan - WoL from S5 stops working
4814 * @hw: pointer to the HW structure
4816 * Steps to take when dropping from 1Gb/s (eg. link cable removal (LSC),
4817 * LPLU, Gig disable, MDIC PHY reset):
4818 * 1) Set Kumeran Near-end loopback
4819 * 2) Clear Kumeran Near-end loopback
4820 * Should only be called for ICH8[m] devices with any 1G Phy.
4822 void e1000_gig_downshift_workaround_ich8lan(struct e1000_hw *hw)
4827 DEBUGFUNC("e1000_gig_downshift_workaround_ich8lan");
4829 if ((hw->mac.type != e1000_ich8lan) ||
4830 (hw->phy.type == e1000_phy_ife))
4833 ret_val = e1000_read_kmrn_reg_generic(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
4837 reg_data |= E1000_KMRNCTRLSTA_DIAG_NELPBK;
4838 ret_val = e1000_write_kmrn_reg_generic(hw,
4839 E1000_KMRNCTRLSTA_DIAG_OFFSET,
4843 reg_data &= ~E1000_KMRNCTRLSTA_DIAG_NELPBK;
4844 e1000_write_kmrn_reg_generic(hw, E1000_KMRNCTRLSTA_DIAG_OFFSET,
4849 * e1000_suspend_workarounds_ich8lan - workarounds needed during S0->Sx
4850 * @hw: pointer to the HW structure
4852 * During S0 to Sx transition, it is possible the link remains at gig
4853 * instead of negotiating to a lower speed. Before going to Sx, set
4854 * 'Gig Disable' to force link speed negotiation to a lower speed based on
4855 * the LPLU setting in the NVM or custom setting. For PCH and newer parts,
4856 * the OEM bits PHY register (LED, GbE disable and LPLU configurations) also
4857 * needs to be written.
4858 * Parts that support (and are linked to a partner which support) EEE in
4859 * 100Mbps should disable LPLU since 100Mbps w/ EEE requires less power
4860 * than 10Mbps w/o EEE.
4862 void e1000_suspend_workarounds_ich8lan(struct e1000_hw *hw)
4864 struct e1000_dev_spec_ich8lan *dev_spec = &hw->dev_spec.ich8lan;
4868 DEBUGFUNC("e1000_suspend_workarounds_ich8lan");
4870 phy_ctrl = E1000_READ_REG(hw, E1000_PHY_CTRL);
4871 phy_ctrl |= E1000_PHY_CTRL_GBE_DISABLE;
4873 if (hw->phy.type == e1000_phy_i217) {
4874 u16 phy_reg, device_id = hw->device_id;
4876 if ((device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) ||
4877 (device_id == E1000_DEV_ID_PCH_LPTLP_I218_V) ||
4878 (device_id == E1000_DEV_ID_PCH_I218_LM3) ||
4879 (device_id == E1000_DEV_ID_PCH_I218_V3)) {
4880 u32 fextnvm6 = E1000_READ_REG(hw, E1000_FEXTNVM6);
4882 E1000_WRITE_REG(hw, E1000_FEXTNVM6,
4883 fextnvm6 & ~E1000_FEXTNVM6_REQ_PLL_CLK);
4886 ret_val = hw->phy.ops.acquire(hw);
4890 if (!dev_spec->eee_disable) {
4894 e1000_read_emi_reg_locked(hw,
4895 I217_EEE_ADVERTISEMENT,
4900 /* Disable LPLU if both link partners support 100BaseT
4901 * EEE and 100Full is advertised on both ends of the
4902 * link, and enable Auto Enable LPI since there will
4903 * be no driver to enable LPI while in Sx.
4905 if ((eee_advert & I82579_EEE_100_SUPPORTED) &&
4906 (dev_spec->eee_lp_ability &
4907 I82579_EEE_100_SUPPORTED) &&
4908 (hw->phy.autoneg_advertised & ADVERTISE_100_FULL)) {
4909 phy_ctrl &= ~(E1000_PHY_CTRL_D0A_LPLU |
4910 E1000_PHY_CTRL_NOND0A_LPLU);
4912 /* Set Auto Enable LPI after link up */
4913 hw->phy.ops.read_reg_locked(hw,
4916 phy_reg |= I217_LPI_GPIO_CTRL_AUTO_EN_LPI;
4917 hw->phy.ops.write_reg_locked(hw,
4923 /* For i217 Intel Rapid Start Technology support,
4924 * when the system is going into Sx and no manageability engine
4925 * is present, the driver must configure proxy to reset only on
4926 * power good. LPI (Low Power Idle) state must also reset only
4927 * on power good, as well as the MTA (Multicast table array).
4928 * The SMBus release must also be disabled on LCD reset.
4930 if (!(E1000_READ_REG(hw, E1000_FWSM) &
4931 E1000_ICH_FWSM_FW_VALID)) {
4932 /* Enable proxy to reset only on power good. */
4933 hw->phy.ops.read_reg_locked(hw, I217_PROXY_CTRL,
4935 phy_reg |= I217_PROXY_CTRL_AUTO_DISABLE;
4936 hw->phy.ops.write_reg_locked(hw, I217_PROXY_CTRL,
4939 /* Set bit enable LPI (EEE) to reset only on
4942 hw->phy.ops.read_reg_locked(hw, I217_SxCTRL, &phy_reg);
4943 phy_reg |= I217_SxCTRL_ENABLE_LPI_RESET;
4944 hw->phy.ops.write_reg_locked(hw, I217_SxCTRL, phy_reg);
4946 /* Disable the SMB release on LCD reset. */
4947 hw->phy.ops.read_reg_locked(hw, I217_MEMPWR, &phy_reg);
4948 phy_reg &= ~I217_MEMPWR_DISABLE_SMB_RELEASE;
4949 hw->phy.ops.write_reg_locked(hw, I217_MEMPWR, phy_reg);
4952 /* Enable MTA to reset for Intel Rapid Start Technology
4955 hw->phy.ops.read_reg_locked(hw, I217_CGFREG, &phy_reg);
4956 phy_reg |= I217_CGFREG_ENABLE_MTA_RESET;
4957 hw->phy.ops.write_reg_locked(hw, I217_CGFREG, phy_reg);
4960 hw->phy.ops.release(hw);
4963 E1000_WRITE_REG(hw, E1000_PHY_CTRL, phy_ctrl);
4965 if (hw->mac.type == e1000_ich8lan)
4966 e1000_gig_downshift_workaround_ich8lan(hw);
4968 if (hw->mac.type >= e1000_pchlan) {
4969 e1000_oem_bits_config_ich8lan(hw, FALSE);
4971 /* Reset PHY to activate OEM bits on 82577/8 */
4972 if (hw->mac.type == e1000_pchlan)
4973 e1000_phy_hw_reset_generic(hw);
4975 ret_val = hw->phy.ops.acquire(hw);
4978 e1000_write_smbus_addr(hw);
4979 hw->phy.ops.release(hw);
4986 * e1000_resume_workarounds_pchlan - workarounds needed during Sx->S0
4987 * @hw: pointer to the HW structure
4989 * During Sx to S0 transitions on non-managed devices or managed devices
4990 * on which PHY resets are not blocked, if the PHY registers cannot be
4991 * accessed properly by the s/w toggle the LANPHYPC value to power cycle
4993 * On i217, setup Intel Rapid Start Technology.
4995 void e1000_resume_workarounds_pchlan(struct e1000_hw *hw)
4999 DEBUGFUNC("e1000_resume_workarounds_pchlan");
5000 if (hw->mac.type < e1000_pch2lan)
5003 ret_val = e1000_init_phy_workarounds_pchlan(hw);
5005 DEBUGOUT1("Failed to init PHY flow ret_val=%d\n", ret_val);
5009 /* For i217 Intel Rapid Start Technology support when the system
5010 * is transitioning from Sx and no manageability engine is present
5011 * configure SMBus to restore on reset, disable proxy, and enable
5012 * the reset on MTA (Multicast table array).
5014 if (hw->phy.type == e1000_phy_i217) {
5017 ret_val = hw->phy.ops.acquire(hw);
5019 DEBUGOUT("Failed to setup iRST\n");
5023 /* Clear Auto Enable LPI after link up */
5024 hw->phy.ops.read_reg_locked(hw, I217_LPI_GPIO_CTRL, &phy_reg);
5025 phy_reg &= ~I217_LPI_GPIO_CTRL_AUTO_EN_LPI;
5026 hw->phy.ops.write_reg_locked(hw, I217_LPI_GPIO_CTRL, phy_reg);
5028 if (!(E1000_READ_REG(hw, E1000_FWSM) &
5029 E1000_ICH_FWSM_FW_VALID)) {
5030 /* Restore clear on SMB if no manageability engine
5033 ret_val = hw->phy.ops.read_reg_locked(hw, I217_MEMPWR,
5037 phy_reg |= I217_MEMPWR_DISABLE_SMB_RELEASE;
5038 hw->phy.ops.write_reg_locked(hw, I217_MEMPWR, phy_reg);
5041 hw->phy.ops.write_reg_locked(hw, I217_PROXY_CTRL, 0);
5043 /* Enable reset on MTA */
5044 ret_val = hw->phy.ops.read_reg_locked(hw, I217_CGFREG,
5048 phy_reg &= ~I217_CGFREG_ENABLE_MTA_RESET;
5049 hw->phy.ops.write_reg_locked(hw, I217_CGFREG, phy_reg);
5052 DEBUGOUT1("Error %d in resume workarounds\n", ret_val);
5053 hw->phy.ops.release(hw);
5058 * e1000_cleanup_led_ich8lan - Restore the default LED operation
5059 * @hw: pointer to the HW structure
5061 * Return the LED back to the default configuration.
5063 static s32 e1000_cleanup_led_ich8lan(struct e1000_hw *hw)
5065 DEBUGFUNC("e1000_cleanup_led_ich8lan");
5067 if (hw->phy.type == e1000_phy_ife)
5068 return hw->phy.ops.write_reg(hw, IFE_PHY_SPECIAL_CONTROL_LED,
5071 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_default);
5072 return E1000_SUCCESS;
5076 * e1000_led_on_ich8lan - Turn LEDs on
5077 * @hw: pointer to the HW structure
5081 static s32 e1000_led_on_ich8lan(struct e1000_hw *hw)
5083 DEBUGFUNC("e1000_led_on_ich8lan");
5085 if (hw->phy.type == e1000_phy_ife)
5086 return hw->phy.ops.write_reg(hw, IFE_PHY_SPECIAL_CONTROL_LED,
5087 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_ON));
5089 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_mode2);
5090 return E1000_SUCCESS;
5094 * e1000_led_off_ich8lan - Turn LEDs off
5095 * @hw: pointer to the HW structure
5097 * Turn off the LEDs.
5099 static s32 e1000_led_off_ich8lan(struct e1000_hw *hw)
5101 DEBUGFUNC("e1000_led_off_ich8lan");
5103 if (hw->phy.type == e1000_phy_ife)
5104 return hw->phy.ops.write_reg(hw, IFE_PHY_SPECIAL_CONTROL_LED,
5105 (IFE_PSCL_PROBE_MODE | IFE_PSCL_PROBE_LEDS_OFF));
5107 E1000_WRITE_REG(hw, E1000_LEDCTL, hw->mac.ledctl_mode1);
5108 return E1000_SUCCESS;
5112 * e1000_setup_led_pchlan - Configures SW controllable LED
5113 * @hw: pointer to the HW structure
5115 * This prepares the SW controllable LED for use.
5117 static s32 e1000_setup_led_pchlan(struct e1000_hw *hw)
5119 DEBUGFUNC("e1000_setup_led_pchlan");
5121 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG,
5122 (u16)hw->mac.ledctl_mode1);
5126 * e1000_cleanup_led_pchlan - Restore the default LED operation
5127 * @hw: pointer to the HW structure
5129 * Return the LED back to the default configuration.
5131 static s32 e1000_cleanup_led_pchlan(struct e1000_hw *hw)
5133 DEBUGFUNC("e1000_cleanup_led_pchlan");
5135 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG,
5136 (u16)hw->mac.ledctl_default);
5140 * e1000_led_on_pchlan - Turn LEDs on
5141 * @hw: pointer to the HW structure
5145 static s32 e1000_led_on_pchlan(struct e1000_hw *hw)
5147 u16 data = (u16)hw->mac.ledctl_mode2;
5150 DEBUGFUNC("e1000_led_on_pchlan");
5152 /* If no link, then turn LED on by setting the invert bit
5153 * for each LED that's mode is "link_up" in ledctl_mode2.
5155 if (!(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
5156 for (i = 0; i < 3; i++) {
5157 led = (data >> (i * 5)) & E1000_PHY_LED0_MASK;
5158 if ((led & E1000_PHY_LED0_MODE_MASK) !=
5159 E1000_LEDCTL_MODE_LINK_UP)
5161 if (led & E1000_PHY_LED0_IVRT)
5162 data &= ~(E1000_PHY_LED0_IVRT << (i * 5));
5164 data |= (E1000_PHY_LED0_IVRT << (i * 5));
5168 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG, data);
5172 * e1000_led_off_pchlan - Turn LEDs off
5173 * @hw: pointer to the HW structure
5175 * Turn off the LEDs.
5177 static s32 e1000_led_off_pchlan(struct e1000_hw *hw)
5179 u16 data = (u16)hw->mac.ledctl_mode1;
5182 DEBUGFUNC("e1000_led_off_pchlan");
5184 /* If no link, then turn LED off by clearing the invert bit
5185 * for each LED that's mode is "link_up" in ledctl_mode1.
5187 if (!(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
5188 for (i = 0; i < 3; i++) {
5189 led = (data >> (i * 5)) & E1000_PHY_LED0_MASK;
5190 if ((led & E1000_PHY_LED0_MODE_MASK) !=
5191 E1000_LEDCTL_MODE_LINK_UP)
5193 if (led & E1000_PHY_LED0_IVRT)
5194 data &= ~(E1000_PHY_LED0_IVRT << (i * 5));
5196 data |= (E1000_PHY_LED0_IVRT << (i * 5));
5200 return hw->phy.ops.write_reg(hw, HV_LED_CONFIG, data);
5204 * e1000_get_cfg_done_ich8lan - Read config done bit after Full or PHY reset
5205 * @hw: pointer to the HW structure
5207 * Read appropriate register for the config done bit for completion status
5208 * and configure the PHY through s/w for EEPROM-less parts.
5210 * NOTE: some silicon which is EEPROM-less will fail trying to read the
5211 * config done bit, so only an error is logged and continues. If we were
5212 * to return with error, EEPROM-less silicon would not be able to be reset
5215 static s32 e1000_get_cfg_done_ich8lan(struct e1000_hw *hw)
5217 s32 ret_val = E1000_SUCCESS;
5221 DEBUGFUNC("e1000_get_cfg_done_ich8lan");
5223 e1000_get_cfg_done_generic(hw);
5225 /* Wait for indication from h/w that it has completed basic config */
5226 if (hw->mac.type >= e1000_ich10lan) {
5227 e1000_lan_init_done_ich8lan(hw);
5229 ret_val = e1000_get_auto_rd_done_generic(hw);
5231 /* When auto config read does not complete, do not
5232 * return with an error. This can happen in situations
5233 * where there is no eeprom and prevents getting link.
5235 DEBUGOUT("Auto Read Done did not complete\n");
5236 ret_val = E1000_SUCCESS;
5240 /* Clear PHY Reset Asserted bit */
5241 status = E1000_READ_REG(hw, E1000_STATUS);
5242 if (status & E1000_STATUS_PHYRA)
5243 E1000_WRITE_REG(hw, E1000_STATUS, status & ~E1000_STATUS_PHYRA);
5245 DEBUGOUT("PHY Reset Asserted not set - needs delay\n");
5247 /* If EEPROM is not marked present, init the IGP 3 PHY manually */
5248 if (hw->mac.type <= e1000_ich9lan) {
5249 if (!(E1000_READ_REG(hw, E1000_EECD) & E1000_EECD_PRES) &&
5250 (hw->phy.type == e1000_phy_igp_3)) {
5251 e1000_phy_init_script_igp3(hw);
5254 if (e1000_valid_nvm_bank_detect_ich8lan(hw, &bank)) {
5255 /* Maybe we should do a basic PHY config */
5256 DEBUGOUT("EEPROM not present\n");
5257 ret_val = -E1000_ERR_CONFIG;
5265 * e1000_power_down_phy_copper_ich8lan - Remove link during PHY power down
5266 * @hw: pointer to the HW structure
5268 * In the case of a PHY power down to save power, or to turn off link during a
5269 * driver unload, or wake on lan is not enabled, remove the link.
5271 static void e1000_power_down_phy_copper_ich8lan(struct e1000_hw *hw)
5273 /* If the management interface is not enabled, then power down */
5274 if (!(hw->mac.ops.check_mng_mode(hw) ||
5275 hw->phy.ops.check_reset_block(hw)))
5276 e1000_power_down_phy_copper(hw);
5282 * e1000_clear_hw_cntrs_ich8lan - Clear statistical counters
5283 * @hw: pointer to the HW structure
5285 * Clears hardware counters specific to the silicon family and calls
5286 * clear_hw_cntrs_generic to clear all general purpose counters.
5288 static void e1000_clear_hw_cntrs_ich8lan(struct e1000_hw *hw)
5293 DEBUGFUNC("e1000_clear_hw_cntrs_ich8lan");
5295 e1000_clear_hw_cntrs_base_generic(hw);
5297 E1000_READ_REG(hw, E1000_ALGNERRC);
5298 E1000_READ_REG(hw, E1000_RXERRC);
5299 E1000_READ_REG(hw, E1000_TNCRS);
5300 E1000_READ_REG(hw, E1000_CEXTERR);
5301 E1000_READ_REG(hw, E1000_TSCTC);
5302 E1000_READ_REG(hw, E1000_TSCTFC);
5304 E1000_READ_REG(hw, E1000_MGTPRC);
5305 E1000_READ_REG(hw, E1000_MGTPDC);
5306 E1000_READ_REG(hw, E1000_MGTPTC);
5308 E1000_READ_REG(hw, E1000_IAC);
5309 E1000_READ_REG(hw, E1000_ICRXOC);
5311 /* Clear PHY statistics registers */
5312 if ((hw->phy.type == e1000_phy_82578) ||
5313 (hw->phy.type == e1000_phy_82579) ||
5314 (hw->phy.type == e1000_phy_i217) ||
5315 (hw->phy.type == e1000_phy_82577)) {
5316 ret_val = hw->phy.ops.acquire(hw);
5319 ret_val = hw->phy.ops.set_page(hw,
5320 HV_STATS_PAGE << IGP_PAGE_SHIFT);
5323 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
5324 hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
5325 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
5326 hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
5327 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
5328 hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
5329 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
5330 hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
5331 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
5332 hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
5333 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
5334 hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
5335 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
5336 hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
5338 hw->phy.ops.release(hw);