1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007-2013 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/if_ether.h>
29 #include <linux/delay.h>
31 #include "e1000_mac.h"
32 #include "e1000_phy.h"
34 static s32 igb_phy_setup_autoneg(struct e1000_hw *hw);
35 static void igb_phy_force_speed_duplex_setup(struct e1000_hw *hw,
37 static s32 igb_wait_autoneg(struct e1000_hw *hw);
38 static s32 igb_set_master_slave_mode(struct e1000_hw *hw);
40 /* Cable length tables */
41 static const u16 e1000_m88_cable_length_table[] = {
42 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED };
43 #define M88E1000_CABLE_LENGTH_TABLE_SIZE \
44 (sizeof(e1000_m88_cable_length_table) / \
45 sizeof(e1000_m88_cable_length_table[0]))
47 static const u16 e1000_igp_2_cable_length_table[] = {
48 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21,
49 0, 0, 0, 3, 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41,
50 6, 10, 14, 18, 22, 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61,
51 21, 26, 31, 35, 40, 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82,
52 40, 45, 51, 56, 61, 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104,
53 60, 66, 72, 77, 82, 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121,
54 83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124,
55 104, 109, 114, 118, 121, 124};
56 #define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \
57 (sizeof(e1000_igp_2_cable_length_table) / \
58 sizeof(e1000_igp_2_cable_length_table[0]))
61 * igb_check_reset_block - Check if PHY reset is blocked
62 * @hw: pointer to the HW structure
64 * Read the PHY management control register and check whether a PHY reset
65 * is blocked. If a reset is not blocked return 0, otherwise
66 * return E1000_BLK_PHY_RESET (12).
68 s32 igb_check_reset_block(struct e1000_hw *hw)
72 manc = rd32(E1000_MANC);
74 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? E1000_BLK_PHY_RESET : 0;
78 * igb_get_phy_id - Retrieve the PHY ID and revision
79 * @hw: pointer to the HW structure
81 * Reads the PHY registers and stores the PHY ID and possibly the PHY
82 * revision in the hardware structure.
84 s32 igb_get_phy_id(struct e1000_hw *hw)
86 struct e1000_phy_info *phy = &hw->phy;
90 ret_val = phy->ops.read_reg(hw, PHY_ID1, &phy_id);
94 phy->id = (u32)(phy_id << 16);
96 ret_val = phy->ops.read_reg(hw, PHY_ID2, &phy_id);
100 phy->id |= (u32)(phy_id & PHY_REVISION_MASK);
101 phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
108 * igb_phy_reset_dsp - Reset PHY DSP
109 * @hw: pointer to the HW structure
111 * Reset the digital signal processor.
113 static s32 igb_phy_reset_dsp(struct e1000_hw *hw)
117 if (!(hw->phy.ops.write_reg))
120 ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xC1);
124 ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0);
131 * igb_read_phy_reg_mdic - Read MDI control register
132 * @hw: pointer to the HW structure
133 * @offset: register offset to be read
134 * @data: pointer to the read data
136 * Reads the MDI control regsiter in the PHY at offset and stores the
137 * information read to data.
139 s32 igb_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
141 struct e1000_phy_info *phy = &hw->phy;
145 if (offset > MAX_PHY_REG_ADDRESS) {
146 hw_dbg("PHY Address %d is out of range\n", offset);
147 ret_val = -E1000_ERR_PARAM;
151 /* Set up Op-code, Phy Address, and register offset in the MDI
152 * Control register. The MAC will take care of interfacing with the
153 * PHY to retrieve the desired data.
155 mdic = ((offset << E1000_MDIC_REG_SHIFT) |
156 (phy->addr << E1000_MDIC_PHY_SHIFT) |
157 (E1000_MDIC_OP_READ));
159 wr32(E1000_MDIC, mdic);
161 /* Poll the ready bit to see if the MDI read completed
162 * Increasing the time out as testing showed failures with
165 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
167 mdic = rd32(E1000_MDIC);
168 if (mdic & E1000_MDIC_READY)
171 if (!(mdic & E1000_MDIC_READY)) {
172 hw_dbg("MDI Read did not complete\n");
173 ret_val = -E1000_ERR_PHY;
176 if (mdic & E1000_MDIC_ERROR) {
177 hw_dbg("MDI Error\n");
178 ret_val = -E1000_ERR_PHY;
188 * igb_write_phy_reg_mdic - Write MDI control register
189 * @hw: pointer to the HW structure
190 * @offset: register offset to write to
191 * @data: data to write to register at offset
193 * Writes data to MDI control register in the PHY at offset.
195 s32 igb_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
197 struct e1000_phy_info *phy = &hw->phy;
201 if (offset > MAX_PHY_REG_ADDRESS) {
202 hw_dbg("PHY Address %d is out of range\n", offset);
203 ret_val = -E1000_ERR_PARAM;
207 /* Set up Op-code, Phy Address, and register offset in the MDI
208 * Control register. The MAC will take care of interfacing with the
209 * PHY to retrieve the desired data.
211 mdic = (((u32)data) |
212 (offset << E1000_MDIC_REG_SHIFT) |
213 (phy->addr << E1000_MDIC_PHY_SHIFT) |
214 (E1000_MDIC_OP_WRITE));
216 wr32(E1000_MDIC, mdic);
218 /* Poll the ready bit to see if the MDI read completed
219 * Increasing the time out as testing showed failures with
222 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
224 mdic = rd32(E1000_MDIC);
225 if (mdic & E1000_MDIC_READY)
228 if (!(mdic & E1000_MDIC_READY)) {
229 hw_dbg("MDI Write did not complete\n");
230 ret_val = -E1000_ERR_PHY;
233 if (mdic & E1000_MDIC_ERROR) {
234 hw_dbg("MDI Error\n");
235 ret_val = -E1000_ERR_PHY;
244 * igb_read_phy_reg_i2c - Read PHY register using i2c
245 * @hw: pointer to the HW structure
246 * @offset: register offset to be read
247 * @data: pointer to the read data
249 * Reads the PHY register at offset using the i2c interface and stores the
250 * retrieved information in data.
252 s32 igb_read_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 *data)
254 struct e1000_phy_info *phy = &hw->phy;
257 /* Set up Op-code, Phy Address, and register address in the I2CCMD
258 * register. The MAC will take care of interfacing with the
259 * PHY to retrieve the desired data.
261 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
262 (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) |
263 (E1000_I2CCMD_OPCODE_READ));
265 wr32(E1000_I2CCMD, i2ccmd);
267 /* Poll the ready bit to see if the I2C read completed */
268 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
270 i2ccmd = rd32(E1000_I2CCMD);
271 if (i2ccmd & E1000_I2CCMD_READY)
274 if (!(i2ccmd & E1000_I2CCMD_READY)) {
275 hw_dbg("I2CCMD Read did not complete\n");
276 return -E1000_ERR_PHY;
278 if (i2ccmd & E1000_I2CCMD_ERROR) {
279 hw_dbg("I2CCMD Error bit set\n");
280 return -E1000_ERR_PHY;
283 /* Need to byte-swap the 16-bit value. */
284 *data = ((i2ccmd >> 8) & 0x00FF) | ((i2ccmd << 8) & 0xFF00);
290 * igb_write_phy_reg_i2c - Write PHY register using i2c
291 * @hw: pointer to the HW structure
292 * @offset: register offset to write to
293 * @data: data to write at register offset
295 * Writes the data to PHY register at the offset using the i2c interface.
297 s32 igb_write_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 data)
299 struct e1000_phy_info *phy = &hw->phy;
301 u16 phy_data_swapped;
303 /* Prevent overwritting SFP I2C EEPROM which is at A0 address.*/
304 if ((hw->phy.addr == 0) || (hw->phy.addr > 7)) {
305 hw_dbg("PHY I2C Address %d is out of range.\n",
307 return -E1000_ERR_CONFIG;
310 /* Swap the data bytes for the I2C interface */
311 phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00);
313 /* Set up Op-code, Phy Address, and register address in the I2CCMD
314 * register. The MAC will take care of interfacing with the
315 * PHY to retrieve the desired data.
317 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
318 (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) |
319 E1000_I2CCMD_OPCODE_WRITE |
322 wr32(E1000_I2CCMD, i2ccmd);
324 /* Poll the ready bit to see if the I2C read completed */
325 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
327 i2ccmd = rd32(E1000_I2CCMD);
328 if (i2ccmd & E1000_I2CCMD_READY)
331 if (!(i2ccmd & E1000_I2CCMD_READY)) {
332 hw_dbg("I2CCMD Write did not complete\n");
333 return -E1000_ERR_PHY;
335 if (i2ccmd & E1000_I2CCMD_ERROR) {
336 hw_dbg("I2CCMD Error bit set\n");
337 return -E1000_ERR_PHY;
344 * igb_read_sfp_data_byte - Reads SFP module data.
345 * @hw: pointer to the HW structure
346 * @offset: byte location offset to be read
347 * @data: read data buffer pointer
349 * Reads one byte from SFP module data stored
350 * in SFP resided EEPROM memory or SFP diagnostic area.
351 * Function should be called with
352 * E1000_I2CCMD_SFP_DATA_ADDR(<byte offset>) for SFP module database access
353 * E1000_I2CCMD_SFP_DIAG_ADDR(<byte offset>) for SFP diagnostics parameters
356 s32 igb_read_sfp_data_byte(struct e1000_hw *hw, u16 offset, u8 *data)
362 if (offset > E1000_I2CCMD_SFP_DIAG_ADDR(255)) {
363 hw_dbg("I2CCMD command address exceeds upper limit\n");
364 return -E1000_ERR_PHY;
367 /* Set up Op-code, EEPROM Address,in the I2CCMD
368 * register. The MAC will take care of interfacing with the
369 * EEPROM to retrieve the desired data.
371 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
372 E1000_I2CCMD_OPCODE_READ);
374 wr32(E1000_I2CCMD, i2ccmd);
376 /* Poll the ready bit to see if the I2C read completed */
377 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
379 data_local = rd32(E1000_I2CCMD);
380 if (data_local & E1000_I2CCMD_READY)
383 if (!(data_local & E1000_I2CCMD_READY)) {
384 hw_dbg("I2CCMD Read did not complete\n");
385 return -E1000_ERR_PHY;
387 if (data_local & E1000_I2CCMD_ERROR) {
388 hw_dbg("I2CCMD Error bit set\n");
389 return -E1000_ERR_PHY;
391 *data = (u8) data_local & 0xFF;
397 * e1000_write_sfp_data_byte - Writes SFP module data.
398 * @hw: pointer to the HW structure
399 * @offset: byte location offset to write to
400 * @data: data to write
402 * Writes one byte to SFP module data stored
403 * in SFP resided EEPROM memory or SFP diagnostic area.
404 * Function should be called with
405 * E1000_I2CCMD_SFP_DATA_ADDR(<byte offset>) for SFP module database access
406 * E1000_I2CCMD_SFP_DIAG_ADDR(<byte offset>) for SFP diagnostics parameters
409 s32 e1000_write_sfp_data_byte(struct e1000_hw *hw, u16 offset, u8 data)
415 if (offset > E1000_I2CCMD_SFP_DIAG_ADDR(255)) {
416 hw_dbg("I2CCMD command address exceeds upper limit\n");
417 return -E1000_ERR_PHY;
419 /* The programming interface is 16 bits wide
420 * so we need to read the whole word first
421 * then update appropriate byte lane and write
422 * the updated word back.
424 /* Set up Op-code, EEPROM Address,in the I2CCMD
425 * register. The MAC will take care of interfacing
426 * with an EEPROM to write the data given.
428 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
429 E1000_I2CCMD_OPCODE_READ);
430 /* Set a command to read single word */
431 wr32(E1000_I2CCMD, i2ccmd);
432 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
434 /* Poll the ready bit to see if lastly
435 * launched I2C operation completed
437 i2ccmd = rd32(E1000_I2CCMD);
438 if (i2ccmd & E1000_I2CCMD_READY) {
439 /* Check if this is READ or WRITE phase */
440 if ((i2ccmd & E1000_I2CCMD_OPCODE_READ) ==
441 E1000_I2CCMD_OPCODE_READ) {
442 /* Write the selected byte
443 * lane and update whole word
445 data_local = i2ccmd & 0xFF00;
448 E1000_I2CCMD_REG_ADDR_SHIFT) |
449 E1000_I2CCMD_OPCODE_WRITE | data_local);
450 wr32(E1000_I2CCMD, i2ccmd);
456 if (!(i2ccmd & E1000_I2CCMD_READY)) {
457 hw_dbg("I2CCMD Write did not complete\n");
458 return -E1000_ERR_PHY;
460 if (i2ccmd & E1000_I2CCMD_ERROR) {
461 hw_dbg("I2CCMD Error bit set\n");
462 return -E1000_ERR_PHY;
468 * igb_read_phy_reg_igp - Read igp PHY register
469 * @hw: pointer to the HW structure
470 * @offset: register offset to be read
471 * @data: pointer to the read data
473 * Acquires semaphore, if necessary, then reads the PHY register at offset
474 * and storing the retrieved information in data. Release any acquired
475 * semaphores before exiting.
477 s32 igb_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data)
481 if (!(hw->phy.ops.acquire))
484 ret_val = hw->phy.ops.acquire(hw);
488 if (offset > MAX_PHY_MULTI_PAGE_REG) {
489 ret_val = igb_write_phy_reg_mdic(hw,
490 IGP01E1000_PHY_PAGE_SELECT,
493 hw->phy.ops.release(hw);
498 ret_val = igb_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
501 hw->phy.ops.release(hw);
508 * igb_write_phy_reg_igp - Write igp PHY register
509 * @hw: pointer to the HW structure
510 * @offset: register offset to write to
511 * @data: data to write at register offset
513 * Acquires semaphore, if necessary, then writes the data to PHY register
514 * at the offset. Release any acquired semaphores before exiting.
516 s32 igb_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data)
520 if (!(hw->phy.ops.acquire))
523 ret_val = hw->phy.ops.acquire(hw);
527 if (offset > MAX_PHY_MULTI_PAGE_REG) {
528 ret_val = igb_write_phy_reg_mdic(hw,
529 IGP01E1000_PHY_PAGE_SELECT,
532 hw->phy.ops.release(hw);
537 ret_val = igb_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
540 hw->phy.ops.release(hw);
547 * igb_copper_link_setup_82580 - Setup 82580 PHY for copper link
548 * @hw: pointer to the HW structure
550 * Sets up Carrier-sense on Transmit and downshift values.
552 s32 igb_copper_link_setup_82580(struct e1000_hw *hw)
554 struct e1000_phy_info *phy = &hw->phy;
558 if (phy->reset_disable) {
563 if (phy->type == e1000_phy_82580) {
564 ret_val = hw->phy.ops.reset(hw);
566 hw_dbg("Error resetting the PHY.\n");
571 /* Enable CRS on TX. This must be set for half-duplex operation. */
572 ret_val = phy->ops.read_reg(hw, I82580_CFG_REG, &phy_data);
576 phy_data |= I82580_CFG_ASSERT_CRS_ON_TX;
578 /* Enable downshift */
579 phy_data |= I82580_CFG_ENABLE_DOWNSHIFT;
581 ret_val = phy->ops.write_reg(hw, I82580_CFG_REG, phy_data);
585 /* Set MDI/MDIX mode */
586 ret_val = phy->ops.read_reg(hw, I82580_PHY_CTRL_2, &phy_data);
589 phy_data &= ~I82580_PHY_CTRL2_MDIX_CFG_MASK;
595 switch (hw->phy.mdix) {
599 phy_data |= I82580_PHY_CTRL2_MANUAL_MDIX;
603 phy_data |= I82580_PHY_CTRL2_AUTO_MDI_MDIX;
606 ret_val = hw->phy.ops.write_reg(hw, I82580_PHY_CTRL_2, phy_data);
613 * igb_copper_link_setup_m88 - Setup m88 PHY's for copper link
614 * @hw: pointer to the HW structure
616 * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock
617 * and downshift values are set also.
619 s32 igb_copper_link_setup_m88(struct e1000_hw *hw)
621 struct e1000_phy_info *phy = &hw->phy;
625 if (phy->reset_disable) {
630 /* Enable CRS on TX. This must be set for half-duplex operation. */
631 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
635 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
638 * MDI/MDI-X = 0 (default)
639 * 0 - Auto for all speeds
642 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
644 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
648 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
651 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
654 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
658 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
663 * disable_polarity_correction = 0 (default)
664 * Automatic Correction for Reversed Cable Polarity
668 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
669 if (phy->disable_polarity_correction == 1)
670 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
672 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
676 if (phy->revision < E1000_REVISION_4) {
677 /* Force TX_CLK in the Extended PHY Specific Control Register
680 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
685 phy_data |= M88E1000_EPSCR_TX_CLK_25;
687 if ((phy->revision == E1000_REVISION_2) &&
688 (phy->id == M88E1111_I_PHY_ID)) {
689 /* 82573L PHY - set the downshift counter to 5x. */
690 phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK;
691 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
693 /* Configure Master and Slave downshift values */
694 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
695 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
696 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
697 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
699 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
705 /* Commit the changes. */
706 ret_val = igb_phy_sw_reset(hw);
708 hw_dbg("Error committing the PHY changes\n");
711 if (phy->type == e1000_phy_i210) {
712 ret_val = igb_set_master_slave_mode(hw);
722 * igb_copper_link_setup_m88_gen2 - Setup m88 PHY's for copper link
723 * @hw: pointer to the HW structure
725 * Sets up MDI/MDI-X and polarity for i347-AT4, m88e1322 and m88e1112 PHY's.
726 * Also enables and sets the downshift parameters.
728 s32 igb_copper_link_setup_m88_gen2(struct e1000_hw *hw)
730 struct e1000_phy_info *phy = &hw->phy;
734 if (phy->reset_disable)
737 /* Enable CRS on Tx. This must be set for half-duplex operation. */
738 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
743 * MDI/MDI-X = 0 (default)
744 * 0 - Auto for all speeds
747 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
749 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
753 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
756 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
759 /* M88E1112 does not support this mode) */
760 if (phy->id != M88E1112_E_PHY_ID) {
761 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
766 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
771 * disable_polarity_correction = 0 (default)
772 * Automatic Correction for Reversed Cable Polarity
776 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
777 if (phy->disable_polarity_correction == 1)
778 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
780 /* Enable downshift and setting it to X6 */
781 if (phy->id == M88E1543_E_PHY_ID) {
782 phy_data &= ~I347AT4_PSCR_DOWNSHIFT_ENABLE;
784 phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
788 ret_val = igb_phy_sw_reset(hw);
790 hw_dbg("Error committing the PHY changes\n");
795 phy_data &= ~I347AT4_PSCR_DOWNSHIFT_MASK;
796 phy_data |= I347AT4_PSCR_DOWNSHIFT_6X;
797 phy_data |= I347AT4_PSCR_DOWNSHIFT_ENABLE;
799 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
803 /* Commit the changes. */
804 ret_val = igb_phy_sw_reset(hw);
806 hw_dbg("Error committing the PHY changes\n");
814 * igb_copper_link_setup_igp - Setup igp PHY's for copper link
815 * @hw: pointer to the HW structure
817 * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for
820 s32 igb_copper_link_setup_igp(struct e1000_hw *hw)
822 struct e1000_phy_info *phy = &hw->phy;
826 if (phy->reset_disable) {
831 ret_val = phy->ops.reset(hw);
833 hw_dbg("Error resetting the PHY.\n");
837 /* Wait 100ms for MAC to configure PHY from NVM settings, to avoid
838 * timeout issues when LFS is enabled.
842 /* The NVM settings will configure LPLU in D3 for
845 if (phy->type == e1000_phy_igp) {
846 /* disable lplu d3 during driver init */
847 if (phy->ops.set_d3_lplu_state)
848 ret_val = phy->ops.set_d3_lplu_state(hw, false);
850 hw_dbg("Error Disabling LPLU D3\n");
855 /* disable lplu d0 during driver init */
856 ret_val = phy->ops.set_d0_lplu_state(hw, false);
858 hw_dbg("Error Disabling LPLU D0\n");
861 /* Configure mdi-mdix settings */
862 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &data);
866 data &= ~IGP01E1000_PSCR_AUTO_MDIX;
870 data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
873 data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
877 data |= IGP01E1000_PSCR_AUTO_MDIX;
880 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, data);
884 /* set auto-master slave resolution settings */
885 if (hw->mac.autoneg) {
886 /* when autonegotiation advertisement is only 1000Mbps then we
887 * should disable SmartSpeed and enable Auto MasterSlave
888 * resolution as hardware default.
890 if (phy->autoneg_advertised == ADVERTISE_1000_FULL) {
891 /* Disable SmartSpeed */
892 ret_val = phy->ops.read_reg(hw,
893 IGP01E1000_PHY_PORT_CONFIG,
898 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
899 ret_val = phy->ops.write_reg(hw,
900 IGP01E1000_PHY_PORT_CONFIG,
905 /* Set auto Master/Slave resolution process */
906 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data);
910 data &= ~CR_1000T_MS_ENABLE;
911 ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data);
916 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data);
920 /* load defaults for future use */
921 phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ?
922 ((data & CR_1000T_MS_VALUE) ?
923 e1000_ms_force_master :
924 e1000_ms_force_slave) :
927 switch (phy->ms_type) {
928 case e1000_ms_force_master:
929 data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
931 case e1000_ms_force_slave:
932 data |= CR_1000T_MS_ENABLE;
933 data &= ~(CR_1000T_MS_VALUE);
936 data &= ~CR_1000T_MS_ENABLE;
940 ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data);
950 * igb_copper_link_autoneg - Setup/Enable autoneg for copper link
951 * @hw: pointer to the HW structure
953 * Performs initial bounds checking on autoneg advertisement parameter, then
954 * configure to advertise the full capability. Setup the PHY to autoneg
955 * and restart the negotiation process between the link partner. If
956 * autoneg_wait_to_complete, then wait for autoneg to complete before exiting.
958 static s32 igb_copper_link_autoneg(struct e1000_hw *hw)
960 struct e1000_phy_info *phy = &hw->phy;
964 /* Perform some bounds checking on the autoneg advertisement
967 phy->autoneg_advertised &= phy->autoneg_mask;
969 /* If autoneg_advertised is zero, we assume it was not defaulted
970 * by the calling code so we set to advertise full capability.
972 if (phy->autoneg_advertised == 0)
973 phy->autoneg_advertised = phy->autoneg_mask;
975 hw_dbg("Reconfiguring auto-neg advertisement params\n");
976 ret_val = igb_phy_setup_autoneg(hw);
978 hw_dbg("Error Setting up Auto-Negotiation\n");
981 hw_dbg("Restarting Auto-Neg\n");
983 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
984 * the Auto Neg Restart bit in the PHY control register.
986 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_ctrl);
990 phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
991 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_ctrl);
995 /* Does the user want to wait for Auto-Neg to complete here, or
996 * check at a later time (for example, callback routine).
998 if (phy->autoneg_wait_to_complete) {
999 ret_val = igb_wait_autoneg(hw);
1001 hw_dbg("Error while waiting for "
1002 "autoneg to complete\n");
1007 hw->mac.get_link_status = true;
1014 * igb_phy_setup_autoneg - Configure PHY for auto-negotiation
1015 * @hw: pointer to the HW structure
1017 * Reads the MII auto-neg advertisement register and/or the 1000T control
1018 * register and if the PHY is already setup for auto-negotiation, then
1019 * return successful. Otherwise, setup advertisement and flow control to
1020 * the appropriate values for the wanted auto-negotiation.
1022 static s32 igb_phy_setup_autoneg(struct e1000_hw *hw)
1024 struct e1000_phy_info *phy = &hw->phy;
1026 u16 mii_autoneg_adv_reg;
1027 u16 mii_1000t_ctrl_reg = 0;
1029 phy->autoneg_advertised &= phy->autoneg_mask;
1031 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
1032 ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
1036 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
1037 /* Read the MII 1000Base-T Control Register (Address 9). */
1038 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL,
1039 &mii_1000t_ctrl_reg);
1044 /* Need to parse both autoneg_advertised and fc and set up
1045 * the appropriate PHY registers. First we will parse for
1046 * autoneg_advertised software override. Since we can advertise
1047 * a plethora of combinations, we need to check each bit
1051 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
1052 * Advertisement Register (Address 4) and the 1000 mb speed bits in
1053 * the 1000Base-T Control Register (Address 9).
1055 mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS |
1056 NWAY_AR_100TX_HD_CAPS |
1057 NWAY_AR_10T_FD_CAPS |
1058 NWAY_AR_10T_HD_CAPS);
1059 mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS);
1061 hw_dbg("autoneg_advertised %x\n", phy->autoneg_advertised);
1063 /* Do we want to advertise 10 Mb Half Duplex? */
1064 if (phy->autoneg_advertised & ADVERTISE_10_HALF) {
1065 hw_dbg("Advertise 10mb Half duplex\n");
1066 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
1069 /* Do we want to advertise 10 Mb Full Duplex? */
1070 if (phy->autoneg_advertised & ADVERTISE_10_FULL) {
1071 hw_dbg("Advertise 10mb Full duplex\n");
1072 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
1075 /* Do we want to advertise 100 Mb Half Duplex? */
1076 if (phy->autoneg_advertised & ADVERTISE_100_HALF) {
1077 hw_dbg("Advertise 100mb Half duplex\n");
1078 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
1081 /* Do we want to advertise 100 Mb Full Duplex? */
1082 if (phy->autoneg_advertised & ADVERTISE_100_FULL) {
1083 hw_dbg("Advertise 100mb Full duplex\n");
1084 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
1087 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
1088 if (phy->autoneg_advertised & ADVERTISE_1000_HALF)
1089 hw_dbg("Advertise 1000mb Half duplex request denied!\n");
1091 /* Do we want to advertise 1000 Mb Full Duplex? */
1092 if (phy->autoneg_advertised & ADVERTISE_1000_FULL) {
1093 hw_dbg("Advertise 1000mb Full duplex\n");
1094 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
1097 /* Check for a software override of the flow control settings, and
1098 * setup the PHY advertisement registers accordingly. If
1099 * auto-negotiation is enabled, then software will have to set the
1100 * "PAUSE" bits to the correct value in the Auto-Negotiation
1101 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-
1104 * The possible values of the "fc" parameter are:
1105 * 0: Flow control is completely disabled
1106 * 1: Rx flow control is enabled (we can receive pause frames
1107 * but not send pause frames).
1108 * 2: Tx flow control is enabled (we can send pause frames
1109 * but we do not support receiving pause frames).
1110 * 3: Both Rx and TX flow control (symmetric) are enabled.
1111 * other: No software override. The flow control configuration
1112 * in the EEPROM is used.
1114 switch (hw->fc.current_mode) {
1116 /* Flow control (RX & TX) is completely disabled by a
1117 * software over-ride.
1119 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1121 case e1000_fc_rx_pause:
1122 /* RX Flow control is enabled, and TX Flow control is
1123 * disabled, by a software over-ride.
1125 * Since there really isn't a way to advertise that we are
1126 * capable of RX Pause ONLY, we will advertise that we
1127 * support both symmetric and asymmetric RX PAUSE. Later
1128 * (in e1000_config_fc_after_link_up) we will disable the
1129 * hw's ability to send PAUSE frames.
1131 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1133 case e1000_fc_tx_pause:
1134 /* TX Flow control is enabled, and RX Flow control is
1135 * disabled, by a software over-ride.
1137 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
1138 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
1141 /* Flow control (both RX and TX) is enabled by a software
1144 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1147 hw_dbg("Flow control param set incorrectly\n");
1148 ret_val = -E1000_ERR_CONFIG;
1152 ret_val = phy->ops.write_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
1156 hw_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
1158 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
1159 ret_val = phy->ops.write_reg(hw,
1161 mii_1000t_ctrl_reg);
1171 * igb_setup_copper_link - Configure copper link settings
1172 * @hw: pointer to the HW structure
1174 * Calls the appropriate function to configure the link for auto-neg or forced
1175 * speed and duplex. Then we check for link, once link is established calls
1176 * to configure collision distance and flow control are called. If link is
1177 * not established, we return -E1000_ERR_PHY (-2).
1179 s32 igb_setup_copper_link(struct e1000_hw *hw)
1184 if (hw->mac.autoneg) {
1185 /* Setup autoneg and flow control advertisement and perform
1188 ret_val = igb_copper_link_autoneg(hw);
1192 /* PHY will be set to 10H, 10F, 100H or 100F
1193 * depending on user settings.
1195 hw_dbg("Forcing Speed and Duplex\n");
1196 ret_val = hw->phy.ops.force_speed_duplex(hw);
1198 hw_dbg("Error Forcing Speed and Duplex\n");
1203 /* Check link status. Wait up to 100 microseconds for link to become
1206 ret_val = igb_phy_has_link(hw, COPPER_LINK_UP_LIMIT, 10, &link);
1211 hw_dbg("Valid link established!!!\n");
1212 igb_config_collision_dist(hw);
1213 ret_val = igb_config_fc_after_link_up(hw);
1215 hw_dbg("Unable to establish link!!!\n");
1223 * igb_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY
1224 * @hw: pointer to the HW structure
1226 * Calls the PHY setup function to force speed and duplex. Clears the
1227 * auto-crossover to force MDI manually. Waits for link and returns
1228 * successful if link up is successful, else -E1000_ERR_PHY (-2).
1230 s32 igb_phy_force_speed_duplex_igp(struct e1000_hw *hw)
1232 struct e1000_phy_info *phy = &hw->phy;
1237 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data);
1241 igb_phy_force_speed_duplex_setup(hw, &phy_data);
1243 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data);
1247 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI
1248 * forced whenever speed and duplex are forced.
1250 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1254 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1255 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1257 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1261 hw_dbg("IGP PSCR: %X\n", phy_data);
1265 if (phy->autoneg_wait_to_complete) {
1266 hw_dbg("Waiting for forced speed/duplex link on IGP phy.\n");
1268 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 10000, &link);
1273 hw_dbg("Link taking longer than expected.\n");
1276 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 10000, &link);
1286 * igb_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY
1287 * @hw: pointer to the HW structure
1289 * Calls the PHY setup function to force speed and duplex. Clears the
1290 * auto-crossover to force MDI manually. Resets the PHY to commit the
1291 * changes. If time expires while waiting for link up, we reset the DSP.
1292 * After reset, TX_CLK and CRS on TX must be set. Return successful upon
1293 * successful completion, else return corresponding error code.
1295 s32 igb_phy_force_speed_duplex_m88(struct e1000_hw *hw)
1297 struct e1000_phy_info *phy = &hw->phy;
1302 /* I210 and I211 devices support Auto-Crossover in forced operation. */
1303 if (phy->type != e1000_phy_i210) {
1304 /* Clear Auto-Crossover to force MDI manually. M88E1000
1305 * requires MDI forced whenever speed and duplex are forced.
1307 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL,
1312 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1313 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL,
1318 hw_dbg("M88E1000 PSCR: %X\n", phy_data);
1321 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data);
1325 igb_phy_force_speed_duplex_setup(hw, &phy_data);
1327 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data);
1331 /* Reset the phy to commit changes. */
1332 ret_val = igb_phy_sw_reset(hw);
1336 if (phy->autoneg_wait_to_complete) {
1337 hw_dbg("Waiting for forced speed/duplex link on M88 phy.\n");
1339 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 100000, &link);
1344 bool reset_dsp = true;
1346 switch (hw->phy.id) {
1347 case I347AT4_E_PHY_ID:
1348 case M88E1112_E_PHY_ID:
1353 if (hw->phy.type != e1000_phy_m88)
1358 hw_dbg("Link taking longer than expected.\n");
1360 /* We didn't get link.
1361 * Reset the DSP and cross our fingers.
1363 ret_val = phy->ops.write_reg(hw,
1364 M88E1000_PHY_PAGE_SELECT,
1368 ret_val = igb_phy_reset_dsp(hw);
1375 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT,
1381 if (hw->phy.type != e1000_phy_m88 ||
1382 hw->phy.id == I347AT4_E_PHY_ID ||
1383 hw->phy.id == M88E1112_E_PHY_ID ||
1384 hw->phy.id == I210_I_PHY_ID)
1387 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1391 /* Resetting the phy means we need to re-force TX_CLK in the
1392 * Extended PHY Specific Control Register to 25MHz clock from
1393 * the reset value of 2.5MHz.
1395 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1396 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1400 /* In addition, we must re-enable CRS on Tx for both half and full
1403 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1407 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1408 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1415 * igb_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex
1416 * @hw: pointer to the HW structure
1417 * @phy_ctrl: pointer to current value of PHY_CONTROL
1419 * Forces speed and duplex on the PHY by doing the following: disable flow
1420 * control, force speed/duplex on the MAC, disable auto speed detection,
1421 * disable auto-negotiation, configure duplex, configure speed, configure
1422 * the collision distance, write configuration to CTRL register. The
1423 * caller must write to the PHY_CONTROL register for these settings to
1426 static void igb_phy_force_speed_duplex_setup(struct e1000_hw *hw,
1429 struct e1000_mac_info *mac = &hw->mac;
1432 /* Turn off flow control when forcing speed/duplex */
1433 hw->fc.current_mode = e1000_fc_none;
1435 /* Force speed/duplex on the mac */
1436 ctrl = rd32(E1000_CTRL);
1437 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1438 ctrl &= ~E1000_CTRL_SPD_SEL;
1440 /* Disable Auto Speed Detection */
1441 ctrl &= ~E1000_CTRL_ASDE;
1443 /* Disable autoneg on the phy */
1444 *phy_ctrl &= ~MII_CR_AUTO_NEG_EN;
1446 /* Forcing Full or Half Duplex? */
1447 if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) {
1448 ctrl &= ~E1000_CTRL_FD;
1449 *phy_ctrl &= ~MII_CR_FULL_DUPLEX;
1450 hw_dbg("Half Duplex\n");
1452 ctrl |= E1000_CTRL_FD;
1453 *phy_ctrl |= MII_CR_FULL_DUPLEX;
1454 hw_dbg("Full Duplex\n");
1457 /* Forcing 10mb or 100mb? */
1458 if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) {
1459 ctrl |= E1000_CTRL_SPD_100;
1460 *phy_ctrl |= MII_CR_SPEED_100;
1461 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1462 hw_dbg("Forcing 100mb\n");
1464 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1465 *phy_ctrl |= MII_CR_SPEED_10;
1466 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1467 hw_dbg("Forcing 10mb\n");
1470 igb_config_collision_dist(hw);
1472 wr32(E1000_CTRL, ctrl);
1476 * igb_set_d3_lplu_state - Sets low power link up state for D3
1477 * @hw: pointer to the HW structure
1478 * @active: boolean used to enable/disable lplu
1480 * Success returns 0, Failure returns 1
1482 * The low power link up (lplu) state is set to the power management level D3
1483 * and SmartSpeed is disabled when active is true, else clear lplu for D3
1484 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1485 * is used during Dx states where the power conservation is most important.
1486 * During driver activity, SmartSpeed should be enabled so performance is
1489 s32 igb_set_d3_lplu_state(struct e1000_hw *hw, bool active)
1491 struct e1000_phy_info *phy = &hw->phy;
1495 if (!(hw->phy.ops.read_reg))
1498 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
1503 data &= ~IGP02E1000_PM_D3_LPLU;
1504 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
1508 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1509 * during Dx states where the power conservation is most
1510 * important. During driver activity we should enable
1511 * SmartSpeed, so performance is maintained.
1513 if (phy->smart_speed == e1000_smart_speed_on) {
1514 ret_val = phy->ops.read_reg(hw,
1515 IGP01E1000_PHY_PORT_CONFIG,
1520 data |= IGP01E1000_PSCFR_SMART_SPEED;
1521 ret_val = phy->ops.write_reg(hw,
1522 IGP01E1000_PHY_PORT_CONFIG,
1526 } else if (phy->smart_speed == e1000_smart_speed_off) {
1527 ret_val = phy->ops.read_reg(hw,
1528 IGP01E1000_PHY_PORT_CONFIG,
1533 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1534 ret_val = phy->ops.write_reg(hw,
1535 IGP01E1000_PHY_PORT_CONFIG,
1540 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1541 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1542 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1543 data |= IGP02E1000_PM_D3_LPLU;
1544 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
1549 /* When LPLU is enabled, we should disable SmartSpeed */
1550 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1555 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1556 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1565 * igb_check_downshift - Checks whether a downshift in speed occurred
1566 * @hw: pointer to the HW structure
1568 * Success returns 0, Failure returns 1
1570 * A downshift is detected by querying the PHY link health.
1572 s32 igb_check_downshift(struct e1000_hw *hw)
1574 struct e1000_phy_info *phy = &hw->phy;
1576 u16 phy_data, offset, mask;
1578 switch (phy->type) {
1579 case e1000_phy_i210:
1581 case e1000_phy_gg82563:
1582 offset = M88E1000_PHY_SPEC_STATUS;
1583 mask = M88E1000_PSSR_DOWNSHIFT;
1585 case e1000_phy_igp_2:
1587 case e1000_phy_igp_3:
1588 offset = IGP01E1000_PHY_LINK_HEALTH;
1589 mask = IGP01E1000_PLHR_SS_DOWNGRADE;
1592 /* speed downshift not supported */
1593 phy->speed_downgraded = false;
1598 ret_val = phy->ops.read_reg(hw, offset, &phy_data);
1601 phy->speed_downgraded = (phy_data & mask) ? true : false;
1608 * igb_check_polarity_m88 - Checks the polarity.
1609 * @hw: pointer to the HW structure
1611 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1613 * Polarity is determined based on the PHY specific status register.
1615 s32 igb_check_polarity_m88(struct e1000_hw *hw)
1617 struct e1000_phy_info *phy = &hw->phy;
1621 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &data);
1624 phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY)
1625 ? e1000_rev_polarity_reversed
1626 : e1000_rev_polarity_normal;
1632 * igb_check_polarity_igp - Checks the polarity.
1633 * @hw: pointer to the HW structure
1635 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1637 * Polarity is determined based on the PHY port status register, and the
1638 * current speed (since there is no polarity at 100Mbps).
1640 static s32 igb_check_polarity_igp(struct e1000_hw *hw)
1642 struct e1000_phy_info *phy = &hw->phy;
1644 u16 data, offset, mask;
1646 /* Polarity is determined based on the speed of
1649 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data);
1653 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
1654 IGP01E1000_PSSR_SPEED_1000MBPS) {
1655 offset = IGP01E1000_PHY_PCS_INIT_REG;
1656 mask = IGP01E1000_PHY_POLARITY_MASK;
1658 /* This really only applies to 10Mbps since
1659 * there is no polarity for 100Mbps (always 0).
1661 offset = IGP01E1000_PHY_PORT_STATUS;
1662 mask = IGP01E1000_PSSR_POLARITY_REVERSED;
1665 ret_val = phy->ops.read_reg(hw, offset, &data);
1668 phy->cable_polarity = (data & mask)
1669 ? e1000_rev_polarity_reversed
1670 : e1000_rev_polarity_normal;
1677 * igb_wait_autoneg - Wait for auto-neg completion
1678 * @hw: pointer to the HW structure
1680 * Waits for auto-negotiation to complete or for the auto-negotiation time
1681 * limit to expire, which ever happens first.
1683 static s32 igb_wait_autoneg(struct e1000_hw *hw)
1688 /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */
1689 for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) {
1690 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1693 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1696 if (phy_status & MII_SR_AUTONEG_COMPLETE)
1701 /* PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation
1708 * igb_phy_has_link - Polls PHY for link
1709 * @hw: pointer to the HW structure
1710 * @iterations: number of times to poll for link
1711 * @usec_interval: delay between polling attempts
1712 * @success: pointer to whether polling was successful or not
1714 * Polls the PHY status register for link, 'iterations' number of times.
1716 s32 igb_phy_has_link(struct e1000_hw *hw, u32 iterations,
1717 u32 usec_interval, bool *success)
1722 for (i = 0; i < iterations; i++) {
1723 /* Some PHYs require the PHY_STATUS register to be read
1724 * twice due to the link bit being sticky. No harm doing
1725 * it across the board.
1727 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1728 if (ret_val && usec_interval > 0) {
1729 /* If the first read fails, another entity may have
1730 * ownership of the resources, wait and try again to
1731 * see if they have relinquished the resources yet.
1733 udelay(usec_interval);
1735 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1738 if (phy_status & MII_SR_LINK_STATUS)
1740 if (usec_interval >= 1000)
1741 mdelay(usec_interval/1000);
1743 udelay(usec_interval);
1746 *success = (i < iterations) ? true : false;
1752 * igb_get_cable_length_m88 - Determine cable length for m88 PHY
1753 * @hw: pointer to the HW structure
1755 * Reads the PHY specific status register to retrieve the cable length
1756 * information. The cable length is determined by averaging the minimum and
1757 * maximum values to get the "average" cable length. The m88 PHY has four
1758 * possible cable length values, which are:
1759 * Register Value Cable Length
1763 * 3 110 - 140 meters
1766 s32 igb_get_cable_length_m88(struct e1000_hw *hw)
1768 struct e1000_phy_info *phy = &hw->phy;
1770 u16 phy_data, index;
1772 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1776 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
1777 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
1778 if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) {
1779 ret_val = -E1000_ERR_PHY;
1783 phy->min_cable_length = e1000_m88_cable_length_table[index];
1784 phy->max_cable_length = e1000_m88_cable_length_table[index + 1];
1786 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1792 s32 igb_get_cable_length_m88_gen2(struct e1000_hw *hw)
1794 struct e1000_phy_info *phy = &hw->phy;
1796 u16 phy_data, phy_data2, index, default_page, is_cm;
1798 switch (hw->phy.id) {
1800 /* Get cable length from PHY Cable Diagnostics Control Reg */
1801 ret_val = phy->ops.read_reg(hw, (0x7 << GS40G_PAGE_SHIFT) +
1802 (I347AT4_PCDL + phy->addr),
1807 /* Check if the unit of cable length is meters or cm */
1808 ret_val = phy->ops.read_reg(hw, (0x7 << GS40G_PAGE_SHIFT) +
1809 I347AT4_PCDC, &phy_data2);
1813 is_cm = !(phy_data2 & I347AT4_PCDC_CABLE_LENGTH_UNIT);
1815 /* Populate the phy structure with cable length in meters */
1816 phy->min_cable_length = phy_data / (is_cm ? 100 : 1);
1817 phy->max_cable_length = phy_data / (is_cm ? 100 : 1);
1818 phy->cable_length = phy_data / (is_cm ? 100 : 1);
1820 case M88E1543_E_PHY_ID:
1821 case I347AT4_E_PHY_ID:
1822 /* Remember the original page select and set it to 7 */
1823 ret_val = phy->ops.read_reg(hw, I347AT4_PAGE_SELECT,
1828 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0x07);
1832 /* Get cable length from PHY Cable Diagnostics Control Reg */
1833 ret_val = phy->ops.read_reg(hw, (I347AT4_PCDL + phy->addr),
1838 /* Check if the unit of cable length is meters or cm */
1839 ret_val = phy->ops.read_reg(hw, I347AT4_PCDC, &phy_data2);
1843 is_cm = !(phy_data2 & I347AT4_PCDC_CABLE_LENGTH_UNIT);
1845 /* Populate the phy structure with cable length in meters */
1846 phy->min_cable_length = phy_data / (is_cm ? 100 : 1);
1847 phy->max_cable_length = phy_data / (is_cm ? 100 : 1);
1848 phy->cable_length = phy_data / (is_cm ? 100 : 1);
1850 /* Reset the page selec to its original value */
1851 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT,
1856 case M88E1112_E_PHY_ID:
1857 /* Remember the original page select and set it to 5 */
1858 ret_val = phy->ops.read_reg(hw, I347AT4_PAGE_SELECT,
1863 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0x05);
1867 ret_val = phy->ops.read_reg(hw, M88E1112_VCT_DSP_DISTANCE,
1872 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
1873 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
1874 if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) {
1875 ret_val = -E1000_ERR_PHY;
1879 phy->min_cable_length = e1000_m88_cable_length_table[index];
1880 phy->max_cable_length = e1000_m88_cable_length_table[index + 1];
1882 phy->cable_length = (phy->min_cable_length +
1883 phy->max_cable_length) / 2;
1885 /* Reset the page select to its original value */
1886 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT,
1893 ret_val = -E1000_ERR_PHY;
1902 * igb_get_cable_length_igp_2 - Determine cable length for igp2 PHY
1903 * @hw: pointer to the HW structure
1905 * The automatic gain control (agc) normalizes the amplitude of the
1906 * received signal, adjusting for the attenuation produced by the
1907 * cable. By reading the AGC registers, which represent the
1908 * combination of coarse and fine gain value, the value can be put
1909 * into a lookup table to obtain the approximate cable length
1912 s32 igb_get_cable_length_igp_2(struct e1000_hw *hw)
1914 struct e1000_phy_info *phy = &hw->phy;
1916 u16 phy_data, i, agc_value = 0;
1917 u16 cur_agc_index, max_agc_index = 0;
1918 u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1;
1919 static const u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = {
1920 IGP02E1000_PHY_AGC_A,
1921 IGP02E1000_PHY_AGC_B,
1922 IGP02E1000_PHY_AGC_C,
1923 IGP02E1000_PHY_AGC_D
1926 /* Read the AGC registers for all channels */
1927 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
1928 ret_val = phy->ops.read_reg(hw, agc_reg_array[i], &phy_data);
1932 /* Getting bits 15:9, which represent the combination of
1933 * coarse and fine gain values. The result is a number
1934 * that can be put into the lookup table to obtain the
1935 * approximate cable length.
1937 cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
1938 IGP02E1000_AGC_LENGTH_MASK;
1940 /* Array index bound check. */
1941 if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) ||
1942 (cur_agc_index == 0)) {
1943 ret_val = -E1000_ERR_PHY;
1947 /* Remove min & max AGC values from calculation. */
1948 if (e1000_igp_2_cable_length_table[min_agc_index] >
1949 e1000_igp_2_cable_length_table[cur_agc_index])
1950 min_agc_index = cur_agc_index;
1951 if (e1000_igp_2_cable_length_table[max_agc_index] <
1952 e1000_igp_2_cable_length_table[cur_agc_index])
1953 max_agc_index = cur_agc_index;
1955 agc_value += e1000_igp_2_cable_length_table[cur_agc_index];
1958 agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] +
1959 e1000_igp_2_cable_length_table[max_agc_index]);
1960 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
1962 /* Calculate cable length with the error range of +/- 10 meters. */
1963 phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
1964 (agc_value - IGP02E1000_AGC_RANGE) : 0;
1965 phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE;
1967 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1974 * igb_get_phy_info_m88 - Retrieve PHY information
1975 * @hw: pointer to the HW structure
1977 * Valid for only copper links. Read the PHY status register (sticky read)
1978 * to verify that link is up. Read the PHY special control register to
1979 * determine the polarity and 10base-T extended distance. Read the PHY
1980 * special status register to determine MDI/MDIx and current speed. If
1981 * speed is 1000, then determine cable length, local and remote receiver.
1983 s32 igb_get_phy_info_m88(struct e1000_hw *hw)
1985 struct e1000_phy_info *phy = &hw->phy;
1990 if (phy->media_type != e1000_media_type_copper) {
1991 hw_dbg("Phy info is only valid for copper media\n");
1992 ret_val = -E1000_ERR_CONFIG;
1996 ret_val = igb_phy_has_link(hw, 1, 0, &link);
2001 hw_dbg("Phy info is only valid if link is up\n");
2002 ret_val = -E1000_ERR_CONFIG;
2006 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
2010 phy->polarity_correction = (phy_data & M88E1000_PSCR_POLARITY_REVERSAL)
2013 ret_val = igb_check_polarity_m88(hw);
2017 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
2021 phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX) ? true : false;
2023 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
2024 ret_val = phy->ops.get_cable_length(hw);
2028 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &phy_data);
2032 phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS)
2033 ? e1000_1000t_rx_status_ok
2034 : e1000_1000t_rx_status_not_ok;
2036 phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS)
2037 ? e1000_1000t_rx_status_ok
2038 : e1000_1000t_rx_status_not_ok;
2040 /* Set values to "undefined" */
2041 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
2042 phy->local_rx = e1000_1000t_rx_status_undefined;
2043 phy->remote_rx = e1000_1000t_rx_status_undefined;
2051 * igb_get_phy_info_igp - Retrieve igp PHY information
2052 * @hw: pointer to the HW structure
2054 * Read PHY status to determine if link is up. If link is up, then
2055 * set/determine 10base-T extended distance and polarity correction. Read
2056 * PHY port status to determine MDI/MDIx and speed. Based on the speed,
2057 * determine on the cable length, local and remote receiver.
2059 s32 igb_get_phy_info_igp(struct e1000_hw *hw)
2061 struct e1000_phy_info *phy = &hw->phy;
2066 ret_val = igb_phy_has_link(hw, 1, 0, &link);
2071 hw_dbg("Phy info is only valid if link is up\n");
2072 ret_val = -E1000_ERR_CONFIG;
2076 phy->polarity_correction = true;
2078 ret_val = igb_check_polarity_igp(hw);
2082 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data);
2086 phy->is_mdix = (data & IGP01E1000_PSSR_MDIX) ? true : false;
2088 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
2089 IGP01E1000_PSSR_SPEED_1000MBPS) {
2090 ret_val = phy->ops.get_cable_length(hw);
2094 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data);
2098 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
2099 ? e1000_1000t_rx_status_ok
2100 : e1000_1000t_rx_status_not_ok;
2102 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
2103 ? e1000_1000t_rx_status_ok
2104 : e1000_1000t_rx_status_not_ok;
2106 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
2107 phy->local_rx = e1000_1000t_rx_status_undefined;
2108 phy->remote_rx = e1000_1000t_rx_status_undefined;
2116 * igb_phy_sw_reset - PHY software reset
2117 * @hw: pointer to the HW structure
2119 * Does a software reset of the PHY by reading the PHY control register and
2120 * setting/write the control register reset bit to the PHY.
2122 s32 igb_phy_sw_reset(struct e1000_hw *hw)
2127 if (!(hw->phy.ops.read_reg))
2130 ret_val = hw->phy.ops.read_reg(hw, PHY_CONTROL, &phy_ctrl);
2134 phy_ctrl |= MII_CR_RESET;
2135 ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL, phy_ctrl);
2146 * igb_phy_hw_reset - PHY hardware reset
2147 * @hw: pointer to the HW structure
2149 * Verify the reset block is not blocking us from resetting. Acquire
2150 * semaphore (if necessary) and read/set/write the device control reset
2151 * bit in the PHY. Wait the appropriate delay time for the device to
2152 * reset and release the semaphore (if necessary).
2154 s32 igb_phy_hw_reset(struct e1000_hw *hw)
2156 struct e1000_phy_info *phy = &hw->phy;
2160 ret_val = igb_check_reset_block(hw);
2166 ret_val = phy->ops.acquire(hw);
2170 ctrl = rd32(E1000_CTRL);
2171 wr32(E1000_CTRL, ctrl | E1000_CTRL_PHY_RST);
2174 udelay(phy->reset_delay_us);
2176 wr32(E1000_CTRL, ctrl);
2181 phy->ops.release(hw);
2183 ret_val = phy->ops.get_cfg_done(hw);
2190 * igb_phy_init_script_igp3 - Inits the IGP3 PHY
2191 * @hw: pointer to the HW structure
2193 * Initializes a Intel Gigabit PHY3 when an EEPROM is not present.
2195 s32 igb_phy_init_script_igp3(struct e1000_hw *hw)
2197 hw_dbg("Running IGP 3 PHY init script\n");
2199 /* PHY init IGP 3 */
2200 /* Enable rise/fall, 10-mode work in class-A */
2201 hw->phy.ops.write_reg(hw, 0x2F5B, 0x9018);
2202 /* Remove all caps from Replica path filter */
2203 hw->phy.ops.write_reg(hw, 0x2F52, 0x0000);
2204 /* Bias trimming for ADC, AFE and Driver (Default) */
2205 hw->phy.ops.write_reg(hw, 0x2FB1, 0x8B24);
2206 /* Increase Hybrid poly bias */
2207 hw->phy.ops.write_reg(hw, 0x2FB2, 0xF8F0);
2208 /* Add 4% to TX amplitude in Giga mode */
2209 hw->phy.ops.write_reg(hw, 0x2010, 0x10B0);
2210 /* Disable trimming (TTT) */
2211 hw->phy.ops.write_reg(hw, 0x2011, 0x0000);
2212 /* Poly DC correction to 94.6% + 2% for all channels */
2213 hw->phy.ops.write_reg(hw, 0x20DD, 0x249A);
2214 /* ABS DC correction to 95.9% */
2215 hw->phy.ops.write_reg(hw, 0x20DE, 0x00D3);
2216 /* BG temp curve trim */
2217 hw->phy.ops.write_reg(hw, 0x28B4, 0x04CE);
2218 /* Increasing ADC OPAMP stage 1 currents to max */
2219 hw->phy.ops.write_reg(hw, 0x2F70, 0x29E4);
2220 /* Force 1000 ( required for enabling PHY regs configuration) */
2221 hw->phy.ops.write_reg(hw, 0x0000, 0x0140);
2222 /* Set upd_freq to 6 */
2223 hw->phy.ops.write_reg(hw, 0x1F30, 0x1606);
2225 hw->phy.ops.write_reg(hw, 0x1F31, 0xB814);
2226 /* Disable adaptive fixed FFE (Default) */
2227 hw->phy.ops.write_reg(hw, 0x1F35, 0x002A);
2228 /* Enable FFE hysteresis */
2229 hw->phy.ops.write_reg(hw, 0x1F3E, 0x0067);
2230 /* Fixed FFE for short cable lengths */
2231 hw->phy.ops.write_reg(hw, 0x1F54, 0x0065);
2232 /* Fixed FFE for medium cable lengths */
2233 hw->phy.ops.write_reg(hw, 0x1F55, 0x002A);
2234 /* Fixed FFE for long cable lengths */
2235 hw->phy.ops.write_reg(hw, 0x1F56, 0x002A);
2236 /* Enable Adaptive Clip Threshold */
2237 hw->phy.ops.write_reg(hw, 0x1F72, 0x3FB0);
2238 /* AHT reset limit to 1 */
2239 hw->phy.ops.write_reg(hw, 0x1F76, 0xC0FF);
2240 /* Set AHT master delay to 127 msec */
2241 hw->phy.ops.write_reg(hw, 0x1F77, 0x1DEC);
2242 /* Set scan bits for AHT */
2243 hw->phy.ops.write_reg(hw, 0x1F78, 0xF9EF);
2244 /* Set AHT Preset bits */
2245 hw->phy.ops.write_reg(hw, 0x1F79, 0x0210);
2246 /* Change integ_factor of channel A to 3 */
2247 hw->phy.ops.write_reg(hw, 0x1895, 0x0003);
2248 /* Change prop_factor of channels BCD to 8 */
2249 hw->phy.ops.write_reg(hw, 0x1796, 0x0008);
2250 /* Change cg_icount + enable integbp for channels BCD */
2251 hw->phy.ops.write_reg(hw, 0x1798, 0xD008);
2252 /* Change cg_icount + enable integbp + change prop_factor_master
2253 * to 8 for channel A
2255 hw->phy.ops.write_reg(hw, 0x1898, 0xD918);
2256 /* Disable AHT in Slave mode on channel A */
2257 hw->phy.ops.write_reg(hw, 0x187A, 0x0800);
2258 /* Enable LPLU and disable AN to 1000 in non-D0a states,
2261 hw->phy.ops.write_reg(hw, 0x0019, 0x008D);
2262 /* Enable restart AN on an1000_dis change */
2263 hw->phy.ops.write_reg(hw, 0x001B, 0x2080);
2264 /* Enable wh_fifo read clock in 10/100 modes */
2265 hw->phy.ops.write_reg(hw, 0x0014, 0x0045);
2266 /* Restart AN, Speed selection is 1000 */
2267 hw->phy.ops.write_reg(hw, 0x0000, 0x1340);
2273 * igb_power_up_phy_copper - Restore copper link in case of PHY power down
2274 * @hw: pointer to the HW structure
2276 * In the case of a PHY power down to save power, or to turn off link during a
2277 * driver unload, restore the link to previous settings.
2279 void igb_power_up_phy_copper(struct e1000_hw *hw)
2284 /* The PHY will retain its settings across a power down/up cycle */
2285 hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
2286 mii_reg &= ~MII_CR_POWER_DOWN;
2287 if (hw->phy.type == e1000_phy_i210) {
2288 hw->phy.ops.read_reg(hw, GS40G_COPPER_SPEC, &power_reg);
2289 power_reg &= ~GS40G_CS_POWER_DOWN;
2290 hw->phy.ops.write_reg(hw, GS40G_COPPER_SPEC, power_reg);
2292 hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
2296 * igb_power_down_phy_copper - Power down copper PHY
2297 * @hw: pointer to the HW structure
2299 * Power down PHY to save power when interface is down and wake on lan
2302 void igb_power_down_phy_copper(struct e1000_hw *hw)
2307 /* The PHY will retain its settings across a power down/up cycle */
2308 hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
2309 mii_reg |= MII_CR_POWER_DOWN;
2311 /* i210 Phy requires an additional bit for power up/down */
2312 if (hw->phy.type == e1000_phy_i210) {
2313 hw->phy.ops.read_reg(hw, GS40G_COPPER_SPEC, &power_reg);
2314 power_reg |= GS40G_CS_POWER_DOWN;
2315 hw->phy.ops.write_reg(hw, GS40G_COPPER_SPEC, power_reg);
2317 hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
2322 * igb_check_polarity_82580 - Checks the polarity.
2323 * @hw: pointer to the HW structure
2325 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
2327 * Polarity is determined based on the PHY specific status register.
2329 static s32 igb_check_polarity_82580(struct e1000_hw *hw)
2331 struct e1000_phy_info *phy = &hw->phy;
2336 ret_val = phy->ops.read_reg(hw, I82580_PHY_STATUS_2, &data);
2339 phy->cable_polarity = (data & I82580_PHY_STATUS2_REV_POLARITY)
2340 ? e1000_rev_polarity_reversed
2341 : e1000_rev_polarity_normal;
2347 * igb_phy_force_speed_duplex_82580 - Force speed/duplex for I82580 PHY
2348 * @hw: pointer to the HW structure
2350 * Calls the PHY setup function to force speed and duplex. Clears the
2351 * auto-crossover to force MDI manually. Waits for link and returns
2352 * successful if link up is successful, else -E1000_ERR_PHY (-2).
2354 s32 igb_phy_force_speed_duplex_82580(struct e1000_hw *hw)
2356 struct e1000_phy_info *phy = &hw->phy;
2361 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data);
2365 igb_phy_force_speed_duplex_setup(hw, &phy_data);
2367 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data);
2371 /* Clear Auto-Crossover to force MDI manually. 82580 requires MDI
2372 * forced whenever speed and duplex are forced.
2374 ret_val = phy->ops.read_reg(hw, I82580_PHY_CTRL_2, &phy_data);
2378 phy_data &= ~I82580_PHY_CTRL2_MDIX_CFG_MASK;
2380 ret_val = phy->ops.write_reg(hw, I82580_PHY_CTRL_2, phy_data);
2384 hw_dbg("I82580_PHY_CTRL_2: %X\n", phy_data);
2388 if (phy->autoneg_wait_to_complete) {
2389 hw_dbg("Waiting for forced speed/duplex link on 82580 phy\n");
2391 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 100000, &link);
2396 hw_dbg("Link taking longer than expected.\n");
2399 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 100000, &link);
2409 * igb_get_phy_info_82580 - Retrieve I82580 PHY information
2410 * @hw: pointer to the HW structure
2412 * Read PHY status to determine if link is up. If link is up, then
2413 * set/determine 10base-T extended distance and polarity correction. Read
2414 * PHY port status to determine MDI/MDIx and speed. Based on the speed,
2415 * determine on the cable length, local and remote receiver.
2417 s32 igb_get_phy_info_82580(struct e1000_hw *hw)
2419 struct e1000_phy_info *phy = &hw->phy;
2424 ret_val = igb_phy_has_link(hw, 1, 0, &link);
2429 hw_dbg("Phy info is only valid if link is up\n");
2430 ret_val = -E1000_ERR_CONFIG;
2434 phy->polarity_correction = true;
2436 ret_val = igb_check_polarity_82580(hw);
2440 ret_val = phy->ops.read_reg(hw, I82580_PHY_STATUS_2, &data);
2444 phy->is_mdix = (data & I82580_PHY_STATUS2_MDIX) ? true : false;
2446 if ((data & I82580_PHY_STATUS2_SPEED_MASK) ==
2447 I82580_PHY_STATUS2_SPEED_1000MBPS) {
2448 ret_val = hw->phy.ops.get_cable_length(hw);
2452 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data);
2456 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
2457 ? e1000_1000t_rx_status_ok
2458 : e1000_1000t_rx_status_not_ok;
2460 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
2461 ? e1000_1000t_rx_status_ok
2462 : e1000_1000t_rx_status_not_ok;
2464 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
2465 phy->local_rx = e1000_1000t_rx_status_undefined;
2466 phy->remote_rx = e1000_1000t_rx_status_undefined;
2474 * igb_get_cable_length_82580 - Determine cable length for 82580 PHY
2475 * @hw: pointer to the HW structure
2477 * Reads the diagnostic status register and verifies result is valid before
2478 * placing it in the phy_cable_length field.
2480 s32 igb_get_cable_length_82580(struct e1000_hw *hw)
2482 struct e1000_phy_info *phy = &hw->phy;
2484 u16 phy_data, length;
2486 ret_val = phy->ops.read_reg(hw, I82580_PHY_DIAG_STATUS, &phy_data);
2490 length = (phy_data & I82580_DSTATUS_CABLE_LENGTH) >>
2491 I82580_DSTATUS_CABLE_LENGTH_SHIFT;
2493 if (length == E1000_CABLE_LENGTH_UNDEFINED)
2494 ret_val = -E1000_ERR_PHY;
2496 phy->cable_length = length;
2503 * igb_write_phy_reg_gs40g - Write GS40G PHY register
2504 * @hw: pointer to the HW structure
2505 * @offset: lower half is register offset to write to
2506 * upper half is page to use.
2507 * @data: data to write at register offset
2509 * Acquires semaphore, if necessary, then writes the data to PHY register
2510 * at the offset. Release any acquired semaphores before exiting.
2512 s32 igb_write_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 data)
2515 u16 page = offset >> GS40G_PAGE_SHIFT;
2517 offset = offset & GS40G_OFFSET_MASK;
2518 ret_val = hw->phy.ops.acquire(hw);
2522 ret_val = igb_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page);
2525 ret_val = igb_write_phy_reg_mdic(hw, offset, data);
2528 hw->phy.ops.release(hw);
2533 * igb_read_phy_reg_gs40g - Read GS40G PHY register
2534 * @hw: pointer to the HW structure
2535 * @offset: lower half is register offset to read to
2536 * upper half is page to use.
2537 * @data: data to read at register offset
2539 * Acquires semaphore, if necessary, then reads the data in the PHY register
2540 * at the offset. Release any acquired semaphores before exiting.
2542 s32 igb_read_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 *data)
2545 u16 page = offset >> GS40G_PAGE_SHIFT;
2547 offset = offset & GS40G_OFFSET_MASK;
2548 ret_val = hw->phy.ops.acquire(hw);
2552 ret_val = igb_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page);
2555 ret_val = igb_read_phy_reg_mdic(hw, offset, data);
2558 hw->phy.ops.release(hw);
2563 * igb_set_master_slave_mode - Setup PHY for Master/slave mode
2564 * @hw: pointer to the HW structure
2566 * Sets up Master/slave mode
2568 static s32 igb_set_master_slave_mode(struct e1000_hw *hw)
2573 /* Resolve Master/Slave mode */
2574 ret_val = hw->phy.ops.read_reg(hw, PHY_1000T_CTRL, &phy_data);
2578 /* load defaults for future use */
2579 hw->phy.original_ms_type = (phy_data & CR_1000T_MS_ENABLE) ?
2580 ((phy_data & CR_1000T_MS_VALUE) ?
2581 e1000_ms_force_master :
2582 e1000_ms_force_slave) : e1000_ms_auto;
2584 switch (hw->phy.ms_type) {
2585 case e1000_ms_force_master:
2586 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
2588 case e1000_ms_force_slave:
2589 phy_data |= CR_1000T_MS_ENABLE;
2590 phy_data &= ~(CR_1000T_MS_VALUE);
2593 phy_data &= ~CR_1000T_MS_ENABLE;
2599 return hw->phy.ops.write_reg(hw, PHY_1000T_CTRL, phy_data);