1 /* Intel(R) Gigabit Ethernet Linux driver
2 * Copyright(c) 2007-2014 Intel Corporation.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, see <http://www.gnu.org/licenses/>.
16 * The full GNU General Public License is included in this distribution in
17 * the file called "COPYING".
19 * Contact Information:
20 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
21 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 #include <linux/if_ether.h>
25 #include <linux/delay.h>
27 #include "e1000_mac.h"
28 #include "e1000_phy.h"
30 static s32 igb_phy_setup_autoneg(struct e1000_hw *hw);
31 static void igb_phy_force_speed_duplex_setup(struct e1000_hw *hw,
33 static s32 igb_wait_autoneg(struct e1000_hw *hw);
34 static s32 igb_set_master_slave_mode(struct e1000_hw *hw);
36 /* Cable length tables */
37 static const u16 e1000_m88_cable_length_table[] = {
38 0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED };
39 #define M88E1000_CABLE_LENGTH_TABLE_SIZE \
40 (sizeof(e1000_m88_cable_length_table) / \
41 sizeof(e1000_m88_cable_length_table[0]))
43 static const u16 e1000_igp_2_cable_length_table[] = {
44 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21,
45 0, 0, 0, 3, 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41,
46 6, 10, 14, 18, 22, 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61,
47 21, 26, 31, 35, 40, 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82,
48 40, 45, 51, 56, 61, 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104,
49 60, 66, 72, 77, 82, 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121,
50 83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124,
51 104, 109, 114, 118, 121, 124};
52 #define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \
53 (sizeof(e1000_igp_2_cable_length_table) / \
54 sizeof(e1000_igp_2_cable_length_table[0]))
57 * igb_check_reset_block - Check if PHY reset is blocked
58 * @hw: pointer to the HW structure
60 * Read the PHY management control register and check whether a PHY reset
61 * is blocked. If a reset is not blocked return 0, otherwise
62 * return E1000_BLK_PHY_RESET (12).
64 s32 igb_check_reset_block(struct e1000_hw *hw)
68 manc = rd32(E1000_MANC);
70 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? E1000_BLK_PHY_RESET : 0;
74 * igb_get_phy_id - Retrieve the PHY ID and revision
75 * @hw: pointer to the HW structure
77 * Reads the PHY registers and stores the PHY ID and possibly the PHY
78 * revision in the hardware structure.
80 s32 igb_get_phy_id(struct e1000_hw *hw)
82 struct e1000_phy_info *phy = &hw->phy;
86 ret_val = phy->ops.read_reg(hw, PHY_ID1, &phy_id);
90 phy->id = (u32)(phy_id << 16);
92 ret_val = phy->ops.read_reg(hw, PHY_ID2, &phy_id);
96 phy->id |= (u32)(phy_id & PHY_REVISION_MASK);
97 phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
104 * igb_phy_reset_dsp - Reset PHY DSP
105 * @hw: pointer to the HW structure
107 * Reset the digital signal processor.
109 static s32 igb_phy_reset_dsp(struct e1000_hw *hw)
113 if (!(hw->phy.ops.write_reg))
116 ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xC1);
120 ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_GEN_CONTROL, 0);
127 * igb_read_phy_reg_mdic - Read MDI control register
128 * @hw: pointer to the HW structure
129 * @offset: register offset to be read
130 * @data: pointer to the read data
132 * Reads the MDI control regsiter in the PHY at offset and stores the
133 * information read to data.
135 s32 igb_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
137 struct e1000_phy_info *phy = &hw->phy;
141 if (offset > MAX_PHY_REG_ADDRESS) {
142 hw_dbg("PHY Address %d is out of range\n", offset);
143 ret_val = -E1000_ERR_PARAM;
147 /* Set up Op-code, Phy Address, and register offset in the MDI
148 * Control register. The MAC will take care of interfacing with the
149 * PHY to retrieve the desired data.
151 mdic = ((offset << E1000_MDIC_REG_SHIFT) |
152 (phy->addr << E1000_MDIC_PHY_SHIFT) |
153 (E1000_MDIC_OP_READ));
155 wr32(E1000_MDIC, mdic);
157 /* Poll the ready bit to see if the MDI read completed
158 * Increasing the time out as testing showed failures with
161 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
163 mdic = rd32(E1000_MDIC);
164 if (mdic & E1000_MDIC_READY)
167 if (!(mdic & E1000_MDIC_READY)) {
168 hw_dbg("MDI Read did not complete\n");
169 ret_val = -E1000_ERR_PHY;
172 if (mdic & E1000_MDIC_ERROR) {
173 hw_dbg("MDI Error\n");
174 ret_val = -E1000_ERR_PHY;
184 * igb_write_phy_reg_mdic - Write MDI control register
185 * @hw: pointer to the HW structure
186 * @offset: register offset to write to
187 * @data: data to write to register at offset
189 * Writes data to MDI control register in the PHY at offset.
191 s32 igb_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
193 struct e1000_phy_info *phy = &hw->phy;
197 if (offset > MAX_PHY_REG_ADDRESS) {
198 hw_dbg("PHY Address %d is out of range\n", offset);
199 ret_val = -E1000_ERR_PARAM;
203 /* Set up Op-code, Phy Address, and register offset in the MDI
204 * Control register. The MAC will take care of interfacing with the
205 * PHY to retrieve the desired data.
207 mdic = (((u32)data) |
208 (offset << E1000_MDIC_REG_SHIFT) |
209 (phy->addr << E1000_MDIC_PHY_SHIFT) |
210 (E1000_MDIC_OP_WRITE));
212 wr32(E1000_MDIC, mdic);
214 /* Poll the ready bit to see if the MDI read completed
215 * Increasing the time out as testing showed failures with
218 for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
220 mdic = rd32(E1000_MDIC);
221 if (mdic & E1000_MDIC_READY)
224 if (!(mdic & E1000_MDIC_READY)) {
225 hw_dbg("MDI Write did not complete\n");
226 ret_val = -E1000_ERR_PHY;
229 if (mdic & E1000_MDIC_ERROR) {
230 hw_dbg("MDI Error\n");
231 ret_val = -E1000_ERR_PHY;
240 * igb_read_phy_reg_i2c - Read PHY register using i2c
241 * @hw: pointer to the HW structure
242 * @offset: register offset to be read
243 * @data: pointer to the read data
245 * Reads the PHY register at offset using the i2c interface and stores the
246 * retrieved information in data.
248 s32 igb_read_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 *data)
250 struct e1000_phy_info *phy = &hw->phy;
253 /* Set up Op-code, Phy Address, and register address in the I2CCMD
254 * register. The MAC will take care of interfacing with the
255 * PHY to retrieve the desired data.
257 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
258 (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) |
259 (E1000_I2CCMD_OPCODE_READ));
261 wr32(E1000_I2CCMD, i2ccmd);
263 /* Poll the ready bit to see if the I2C read completed */
264 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
266 i2ccmd = rd32(E1000_I2CCMD);
267 if (i2ccmd & E1000_I2CCMD_READY)
270 if (!(i2ccmd & E1000_I2CCMD_READY)) {
271 hw_dbg("I2CCMD Read did not complete\n");
272 return -E1000_ERR_PHY;
274 if (i2ccmd & E1000_I2CCMD_ERROR) {
275 hw_dbg("I2CCMD Error bit set\n");
276 return -E1000_ERR_PHY;
279 /* Need to byte-swap the 16-bit value. */
280 *data = ((i2ccmd >> 8) & 0x00FF) | ((i2ccmd << 8) & 0xFF00);
286 * igb_write_phy_reg_i2c - Write PHY register using i2c
287 * @hw: pointer to the HW structure
288 * @offset: register offset to write to
289 * @data: data to write at register offset
291 * Writes the data to PHY register at the offset using the i2c interface.
293 s32 igb_write_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 data)
295 struct e1000_phy_info *phy = &hw->phy;
297 u16 phy_data_swapped;
299 /* Prevent overwritting SFP I2C EEPROM which is at A0 address.*/
300 if ((hw->phy.addr == 0) || (hw->phy.addr > 7)) {
301 hw_dbg("PHY I2C Address %d is out of range.\n",
303 return -E1000_ERR_CONFIG;
306 /* Swap the data bytes for the I2C interface */
307 phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00);
309 /* Set up Op-code, Phy Address, and register address in the I2CCMD
310 * register. The MAC will take care of interfacing with the
311 * PHY to retrieve the desired data.
313 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
314 (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) |
315 E1000_I2CCMD_OPCODE_WRITE |
318 wr32(E1000_I2CCMD, i2ccmd);
320 /* Poll the ready bit to see if the I2C read completed */
321 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
323 i2ccmd = rd32(E1000_I2CCMD);
324 if (i2ccmd & E1000_I2CCMD_READY)
327 if (!(i2ccmd & E1000_I2CCMD_READY)) {
328 hw_dbg("I2CCMD Write did not complete\n");
329 return -E1000_ERR_PHY;
331 if (i2ccmd & E1000_I2CCMD_ERROR) {
332 hw_dbg("I2CCMD Error bit set\n");
333 return -E1000_ERR_PHY;
340 * igb_read_sfp_data_byte - Reads SFP module data.
341 * @hw: pointer to the HW structure
342 * @offset: byte location offset to be read
343 * @data: read data buffer pointer
345 * Reads one byte from SFP module data stored
346 * in SFP resided EEPROM memory or SFP diagnostic area.
347 * Function should be called with
348 * E1000_I2CCMD_SFP_DATA_ADDR(<byte offset>) for SFP module database access
349 * E1000_I2CCMD_SFP_DIAG_ADDR(<byte offset>) for SFP diagnostics parameters
352 s32 igb_read_sfp_data_byte(struct e1000_hw *hw, u16 offset, u8 *data)
358 if (offset > E1000_I2CCMD_SFP_DIAG_ADDR(255)) {
359 hw_dbg("I2CCMD command address exceeds upper limit\n");
360 return -E1000_ERR_PHY;
363 /* Set up Op-code, EEPROM Address,in the I2CCMD
364 * register. The MAC will take care of interfacing with the
365 * EEPROM to retrieve the desired data.
367 i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
368 E1000_I2CCMD_OPCODE_READ);
370 wr32(E1000_I2CCMD, i2ccmd);
372 /* Poll the ready bit to see if the I2C read completed */
373 for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
375 data_local = rd32(E1000_I2CCMD);
376 if (data_local & E1000_I2CCMD_READY)
379 if (!(data_local & E1000_I2CCMD_READY)) {
380 hw_dbg("I2CCMD Read did not complete\n");
381 return -E1000_ERR_PHY;
383 if (data_local & E1000_I2CCMD_ERROR) {
384 hw_dbg("I2CCMD Error bit set\n");
385 return -E1000_ERR_PHY;
387 *data = (u8) data_local & 0xFF;
393 * igb_read_phy_reg_igp - Read igp PHY register
394 * @hw: pointer to the HW structure
395 * @offset: register offset to be read
396 * @data: pointer to the read data
398 * Acquires semaphore, if necessary, then reads the PHY register at offset
399 * and storing the retrieved information in data. Release any acquired
400 * semaphores before exiting.
402 s32 igb_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data)
406 if (!(hw->phy.ops.acquire))
409 ret_val = hw->phy.ops.acquire(hw);
413 if (offset > MAX_PHY_MULTI_PAGE_REG) {
414 ret_val = igb_write_phy_reg_mdic(hw,
415 IGP01E1000_PHY_PAGE_SELECT,
418 hw->phy.ops.release(hw);
423 ret_val = igb_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
426 hw->phy.ops.release(hw);
433 * igb_write_phy_reg_igp - Write igp PHY register
434 * @hw: pointer to the HW structure
435 * @offset: register offset to write to
436 * @data: data to write at register offset
438 * Acquires semaphore, if necessary, then writes the data to PHY register
439 * at the offset. Release any acquired semaphores before exiting.
441 s32 igb_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data)
445 if (!(hw->phy.ops.acquire))
448 ret_val = hw->phy.ops.acquire(hw);
452 if (offset > MAX_PHY_MULTI_PAGE_REG) {
453 ret_val = igb_write_phy_reg_mdic(hw,
454 IGP01E1000_PHY_PAGE_SELECT,
457 hw->phy.ops.release(hw);
462 ret_val = igb_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
465 hw->phy.ops.release(hw);
472 * igb_copper_link_setup_82580 - Setup 82580 PHY for copper link
473 * @hw: pointer to the HW structure
475 * Sets up Carrier-sense on Transmit and downshift values.
477 s32 igb_copper_link_setup_82580(struct e1000_hw *hw)
479 struct e1000_phy_info *phy = &hw->phy;
483 if (phy->reset_disable) {
488 if (phy->type == e1000_phy_82580) {
489 ret_val = hw->phy.ops.reset(hw);
491 hw_dbg("Error resetting the PHY.\n");
496 /* Enable CRS on TX. This must be set for half-duplex operation. */
497 ret_val = phy->ops.read_reg(hw, I82580_CFG_REG, &phy_data);
501 phy_data |= I82580_CFG_ASSERT_CRS_ON_TX;
503 /* Enable downshift */
504 phy_data |= I82580_CFG_ENABLE_DOWNSHIFT;
506 ret_val = phy->ops.write_reg(hw, I82580_CFG_REG, phy_data);
510 /* Set MDI/MDIX mode */
511 ret_val = phy->ops.read_reg(hw, I82580_PHY_CTRL_2, &phy_data);
514 phy_data &= ~I82580_PHY_CTRL2_MDIX_CFG_MASK;
520 switch (hw->phy.mdix) {
524 phy_data |= I82580_PHY_CTRL2_MANUAL_MDIX;
528 phy_data |= I82580_PHY_CTRL2_AUTO_MDI_MDIX;
531 ret_val = hw->phy.ops.write_reg(hw, I82580_PHY_CTRL_2, phy_data);
538 * igb_copper_link_setup_m88 - Setup m88 PHY's for copper link
539 * @hw: pointer to the HW structure
541 * Sets up MDI/MDI-X and polarity for m88 PHY's. If necessary, transmit clock
542 * and downshift values are set also.
544 s32 igb_copper_link_setup_m88(struct e1000_hw *hw)
546 struct e1000_phy_info *phy = &hw->phy;
550 if (phy->reset_disable) {
555 /* Enable CRS on TX. This must be set for half-duplex operation. */
556 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
560 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
563 * MDI/MDI-X = 0 (default)
564 * 0 - Auto for all speeds
567 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
569 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
573 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
576 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
579 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
583 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
588 * disable_polarity_correction = 0 (default)
589 * Automatic Correction for Reversed Cable Polarity
593 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
594 if (phy->disable_polarity_correction == 1)
595 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
597 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
601 if (phy->revision < E1000_REVISION_4) {
602 /* Force TX_CLK in the Extended PHY Specific Control Register
605 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
610 phy_data |= M88E1000_EPSCR_TX_CLK_25;
612 if ((phy->revision == E1000_REVISION_2) &&
613 (phy->id == M88E1111_I_PHY_ID)) {
614 /* 82573L PHY - set the downshift counter to 5x. */
615 phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK;
616 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
618 /* Configure Master and Slave downshift values */
619 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
620 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
621 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
622 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
624 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
630 /* Commit the changes. */
631 ret_val = igb_phy_sw_reset(hw);
633 hw_dbg("Error committing the PHY changes\n");
642 * igb_copper_link_setup_m88_gen2 - Setup m88 PHY's for copper link
643 * @hw: pointer to the HW structure
645 * Sets up MDI/MDI-X and polarity for i347-AT4, m88e1322 and m88e1112 PHY's.
646 * Also enables and sets the downshift parameters.
648 s32 igb_copper_link_setup_m88_gen2(struct e1000_hw *hw)
650 struct e1000_phy_info *phy = &hw->phy;
654 if (phy->reset_disable)
657 /* Enable CRS on Tx. This must be set for half-duplex operation. */
658 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
663 * MDI/MDI-X = 0 (default)
664 * 0 - Auto for all speeds
667 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
669 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
673 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
676 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
679 /* M88E1112 does not support this mode) */
680 if (phy->id != M88E1112_E_PHY_ID) {
681 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
686 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
691 * disable_polarity_correction = 0 (default)
692 * Automatic Correction for Reversed Cable Polarity
696 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
697 if (phy->disable_polarity_correction == 1)
698 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
700 /* Enable downshift and setting it to X6 */
701 if (phy->id == M88E1543_E_PHY_ID) {
702 phy_data &= ~I347AT4_PSCR_DOWNSHIFT_ENABLE;
704 phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
708 ret_val = igb_phy_sw_reset(hw);
710 hw_dbg("Error committing the PHY changes\n");
715 phy_data &= ~I347AT4_PSCR_DOWNSHIFT_MASK;
716 phy_data |= I347AT4_PSCR_DOWNSHIFT_6X;
717 phy_data |= I347AT4_PSCR_DOWNSHIFT_ENABLE;
719 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
723 /* Commit the changes. */
724 ret_val = igb_phy_sw_reset(hw);
726 hw_dbg("Error committing the PHY changes\n");
729 ret_val = igb_set_master_slave_mode(hw);
737 * igb_copper_link_setup_igp - Setup igp PHY's for copper link
738 * @hw: pointer to the HW structure
740 * Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for
743 s32 igb_copper_link_setup_igp(struct e1000_hw *hw)
745 struct e1000_phy_info *phy = &hw->phy;
749 if (phy->reset_disable) {
754 ret_val = phy->ops.reset(hw);
756 hw_dbg("Error resetting the PHY.\n");
760 /* Wait 100ms for MAC to configure PHY from NVM settings, to avoid
761 * timeout issues when LFS is enabled.
765 /* The NVM settings will configure LPLU in D3 for
768 if (phy->type == e1000_phy_igp) {
769 /* disable lplu d3 during driver init */
770 if (phy->ops.set_d3_lplu_state)
771 ret_val = phy->ops.set_d3_lplu_state(hw, false);
773 hw_dbg("Error Disabling LPLU D3\n");
778 /* disable lplu d0 during driver init */
779 ret_val = phy->ops.set_d0_lplu_state(hw, false);
781 hw_dbg("Error Disabling LPLU D0\n");
784 /* Configure mdi-mdix settings */
785 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &data);
789 data &= ~IGP01E1000_PSCR_AUTO_MDIX;
793 data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
796 data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
800 data |= IGP01E1000_PSCR_AUTO_MDIX;
803 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, data);
807 /* set auto-master slave resolution settings */
808 if (hw->mac.autoneg) {
809 /* when autonegotiation advertisement is only 1000Mbps then we
810 * should disable SmartSpeed and enable Auto MasterSlave
811 * resolution as hardware default.
813 if (phy->autoneg_advertised == ADVERTISE_1000_FULL) {
814 /* Disable SmartSpeed */
815 ret_val = phy->ops.read_reg(hw,
816 IGP01E1000_PHY_PORT_CONFIG,
821 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
822 ret_val = phy->ops.write_reg(hw,
823 IGP01E1000_PHY_PORT_CONFIG,
828 /* Set auto Master/Slave resolution process */
829 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data);
833 data &= ~CR_1000T_MS_ENABLE;
834 ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data);
839 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL, &data);
843 /* load defaults for future use */
844 phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ?
845 ((data & CR_1000T_MS_VALUE) ?
846 e1000_ms_force_master :
847 e1000_ms_force_slave) :
850 switch (phy->ms_type) {
851 case e1000_ms_force_master:
852 data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
854 case e1000_ms_force_slave:
855 data |= CR_1000T_MS_ENABLE;
856 data &= ~(CR_1000T_MS_VALUE);
859 data &= ~CR_1000T_MS_ENABLE;
863 ret_val = phy->ops.write_reg(hw, PHY_1000T_CTRL, data);
873 * igb_copper_link_autoneg - Setup/Enable autoneg for copper link
874 * @hw: pointer to the HW structure
876 * Performs initial bounds checking on autoneg advertisement parameter, then
877 * configure to advertise the full capability. Setup the PHY to autoneg
878 * and restart the negotiation process between the link partner. If
879 * autoneg_wait_to_complete, then wait for autoneg to complete before exiting.
881 static s32 igb_copper_link_autoneg(struct e1000_hw *hw)
883 struct e1000_phy_info *phy = &hw->phy;
887 /* Perform some bounds checking on the autoneg advertisement
890 phy->autoneg_advertised &= phy->autoneg_mask;
892 /* If autoneg_advertised is zero, we assume it was not defaulted
893 * by the calling code so we set to advertise full capability.
895 if (phy->autoneg_advertised == 0)
896 phy->autoneg_advertised = phy->autoneg_mask;
898 hw_dbg("Reconfiguring auto-neg advertisement params\n");
899 ret_val = igb_phy_setup_autoneg(hw);
901 hw_dbg("Error Setting up Auto-Negotiation\n");
904 hw_dbg("Restarting Auto-Neg\n");
906 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
907 * the Auto Neg Restart bit in the PHY control register.
909 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_ctrl);
913 phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
914 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_ctrl);
918 /* Does the user want to wait for Auto-Neg to complete here, or
919 * check at a later time (for example, callback routine).
921 if (phy->autoneg_wait_to_complete) {
922 ret_val = igb_wait_autoneg(hw);
924 hw_dbg("Error while waiting for autoneg to complete\n");
929 hw->mac.get_link_status = true;
936 * igb_phy_setup_autoneg - Configure PHY for auto-negotiation
937 * @hw: pointer to the HW structure
939 * Reads the MII auto-neg advertisement register and/or the 1000T control
940 * register and if the PHY is already setup for auto-negotiation, then
941 * return successful. Otherwise, setup advertisement and flow control to
942 * the appropriate values for the wanted auto-negotiation.
944 static s32 igb_phy_setup_autoneg(struct e1000_hw *hw)
946 struct e1000_phy_info *phy = &hw->phy;
948 u16 mii_autoneg_adv_reg;
949 u16 mii_1000t_ctrl_reg = 0;
951 phy->autoneg_advertised &= phy->autoneg_mask;
953 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
954 ret_val = phy->ops.read_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
958 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
959 /* Read the MII 1000Base-T Control Register (Address 9). */
960 ret_val = phy->ops.read_reg(hw, PHY_1000T_CTRL,
961 &mii_1000t_ctrl_reg);
966 /* Need to parse both autoneg_advertised and fc and set up
967 * the appropriate PHY registers. First we will parse for
968 * autoneg_advertised software override. Since we can advertise
969 * a plethora of combinations, we need to check each bit
973 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
974 * Advertisement Register (Address 4) and the 1000 mb speed bits in
975 * the 1000Base-T Control Register (Address 9).
977 mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS |
978 NWAY_AR_100TX_HD_CAPS |
979 NWAY_AR_10T_FD_CAPS |
980 NWAY_AR_10T_HD_CAPS);
981 mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS);
983 hw_dbg("autoneg_advertised %x\n", phy->autoneg_advertised);
985 /* Do we want to advertise 10 Mb Half Duplex? */
986 if (phy->autoneg_advertised & ADVERTISE_10_HALF) {
987 hw_dbg("Advertise 10mb Half duplex\n");
988 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
991 /* Do we want to advertise 10 Mb Full Duplex? */
992 if (phy->autoneg_advertised & ADVERTISE_10_FULL) {
993 hw_dbg("Advertise 10mb Full duplex\n");
994 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
997 /* Do we want to advertise 100 Mb Half Duplex? */
998 if (phy->autoneg_advertised & ADVERTISE_100_HALF) {
999 hw_dbg("Advertise 100mb Half duplex\n");
1000 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
1003 /* Do we want to advertise 100 Mb Full Duplex? */
1004 if (phy->autoneg_advertised & ADVERTISE_100_FULL) {
1005 hw_dbg("Advertise 100mb Full duplex\n");
1006 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
1009 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
1010 if (phy->autoneg_advertised & ADVERTISE_1000_HALF)
1011 hw_dbg("Advertise 1000mb Half duplex request denied!\n");
1013 /* Do we want to advertise 1000 Mb Full Duplex? */
1014 if (phy->autoneg_advertised & ADVERTISE_1000_FULL) {
1015 hw_dbg("Advertise 1000mb Full duplex\n");
1016 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
1019 /* Check for a software override of the flow control settings, and
1020 * setup the PHY advertisement registers accordingly. If
1021 * auto-negotiation is enabled, then software will have to set the
1022 * "PAUSE" bits to the correct value in the Auto-Negotiation
1023 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-
1026 * The possible values of the "fc" parameter are:
1027 * 0: Flow control is completely disabled
1028 * 1: Rx flow control is enabled (we can receive pause frames
1029 * but not send pause frames).
1030 * 2: Tx flow control is enabled (we can send pause frames
1031 * but we do not support receiving pause frames).
1032 * 3: Both Rx and TX flow control (symmetric) are enabled.
1033 * other: No software override. The flow control configuration
1034 * in the EEPROM is used.
1036 switch (hw->fc.current_mode) {
1038 /* Flow control (RX & TX) is completely disabled by a
1039 * software over-ride.
1041 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1043 case e1000_fc_rx_pause:
1044 /* RX Flow control is enabled, and TX Flow control is
1045 * disabled, by a software over-ride.
1047 * Since there really isn't a way to advertise that we are
1048 * capable of RX Pause ONLY, we will advertise that we
1049 * support both symmetric and asymmetric RX PAUSE. Later
1050 * (in e1000_config_fc_after_link_up) we will disable the
1051 * hw's ability to send PAUSE frames.
1053 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1055 case e1000_fc_tx_pause:
1056 /* TX Flow control is enabled, and RX Flow control is
1057 * disabled, by a software over-ride.
1059 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
1060 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
1063 /* Flow control (both RX and TX) is enabled by a software
1066 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1069 hw_dbg("Flow control param set incorrectly\n");
1070 ret_val = -E1000_ERR_CONFIG;
1074 ret_val = phy->ops.write_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
1078 hw_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
1080 if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
1081 ret_val = phy->ops.write_reg(hw,
1083 mii_1000t_ctrl_reg);
1093 * igb_setup_copper_link - Configure copper link settings
1094 * @hw: pointer to the HW structure
1096 * Calls the appropriate function to configure the link for auto-neg or forced
1097 * speed and duplex. Then we check for link, once link is established calls
1098 * to configure collision distance and flow control are called. If link is
1099 * not established, we return -E1000_ERR_PHY (-2).
1101 s32 igb_setup_copper_link(struct e1000_hw *hw)
1106 if (hw->mac.autoneg) {
1107 /* Setup autoneg and flow control advertisement and perform
1110 ret_val = igb_copper_link_autoneg(hw);
1114 /* PHY will be set to 10H, 10F, 100H or 100F
1115 * depending on user settings.
1117 hw_dbg("Forcing Speed and Duplex\n");
1118 ret_val = hw->phy.ops.force_speed_duplex(hw);
1120 hw_dbg("Error Forcing Speed and Duplex\n");
1125 /* Check link status. Wait up to 100 microseconds for link to become
1128 ret_val = igb_phy_has_link(hw, COPPER_LINK_UP_LIMIT, 10, &link);
1133 hw_dbg("Valid link established!!!\n");
1134 igb_config_collision_dist(hw);
1135 ret_val = igb_config_fc_after_link_up(hw);
1137 hw_dbg("Unable to establish link!!!\n");
1145 * igb_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY
1146 * @hw: pointer to the HW structure
1148 * Calls the PHY setup function to force speed and duplex. Clears the
1149 * auto-crossover to force MDI manually. Waits for link and returns
1150 * successful if link up is successful, else -E1000_ERR_PHY (-2).
1152 s32 igb_phy_force_speed_duplex_igp(struct e1000_hw *hw)
1154 struct e1000_phy_info *phy = &hw->phy;
1159 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data);
1163 igb_phy_force_speed_duplex_setup(hw, &phy_data);
1165 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data);
1169 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI
1170 * forced whenever speed and duplex are forced.
1172 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1176 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1177 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1179 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1183 hw_dbg("IGP PSCR: %X\n", phy_data);
1187 if (phy->autoneg_wait_to_complete) {
1188 hw_dbg("Waiting for forced speed/duplex link on IGP phy.\n");
1190 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 10000, &link);
1195 hw_dbg("Link taking longer than expected.\n");
1198 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 10000, &link);
1208 * igb_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY
1209 * @hw: pointer to the HW structure
1211 * Calls the PHY setup function to force speed and duplex. Clears the
1212 * auto-crossover to force MDI manually. Resets the PHY to commit the
1213 * changes. If time expires while waiting for link up, we reset the DSP.
1214 * After reset, TX_CLK and CRS on TX must be set. Return successful upon
1215 * successful completion, else return corresponding error code.
1217 s32 igb_phy_force_speed_duplex_m88(struct e1000_hw *hw)
1219 struct e1000_phy_info *phy = &hw->phy;
1224 /* I210 and I211 devices support Auto-Crossover in forced operation. */
1225 if (phy->type != e1000_phy_i210) {
1226 /* Clear Auto-Crossover to force MDI manually. M88E1000
1227 * requires MDI forced whenever speed and duplex are forced.
1229 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL,
1234 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1235 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL,
1240 hw_dbg("M88E1000 PSCR: %X\n", phy_data);
1243 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data);
1247 igb_phy_force_speed_duplex_setup(hw, &phy_data);
1249 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data);
1253 /* Reset the phy to commit changes. */
1254 ret_val = igb_phy_sw_reset(hw);
1258 if (phy->autoneg_wait_to_complete) {
1259 hw_dbg("Waiting for forced speed/duplex link on M88 phy.\n");
1261 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 100000, &link);
1266 bool reset_dsp = true;
1268 switch (hw->phy.id) {
1269 case I347AT4_E_PHY_ID:
1270 case M88E1112_E_PHY_ID:
1275 if (hw->phy.type != e1000_phy_m88)
1280 hw_dbg("Link taking longer than expected.\n");
1282 /* We didn't get link.
1283 * Reset the DSP and cross our fingers.
1285 ret_val = phy->ops.write_reg(hw,
1286 M88E1000_PHY_PAGE_SELECT,
1290 ret_val = igb_phy_reset_dsp(hw);
1297 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT,
1303 if (hw->phy.type != e1000_phy_m88 ||
1304 hw->phy.id == I347AT4_E_PHY_ID ||
1305 hw->phy.id == M88E1112_E_PHY_ID ||
1306 hw->phy.id == I210_I_PHY_ID)
1309 ret_val = phy->ops.read_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1313 /* Resetting the phy means we need to re-force TX_CLK in the
1314 * Extended PHY Specific Control Register to 25MHz clock from
1315 * the reset value of 2.5MHz.
1317 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1318 ret_val = phy->ops.write_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1322 /* In addition, we must re-enable CRS on Tx for both half and full
1325 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1329 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1330 ret_val = phy->ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1337 * igb_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex
1338 * @hw: pointer to the HW structure
1339 * @phy_ctrl: pointer to current value of PHY_CONTROL
1341 * Forces speed and duplex on the PHY by doing the following: disable flow
1342 * control, force speed/duplex on the MAC, disable auto speed detection,
1343 * disable auto-negotiation, configure duplex, configure speed, configure
1344 * the collision distance, write configuration to CTRL register. The
1345 * caller must write to the PHY_CONTROL register for these settings to
1348 static void igb_phy_force_speed_duplex_setup(struct e1000_hw *hw,
1351 struct e1000_mac_info *mac = &hw->mac;
1354 /* Turn off flow control when forcing speed/duplex */
1355 hw->fc.current_mode = e1000_fc_none;
1357 /* Force speed/duplex on the mac */
1358 ctrl = rd32(E1000_CTRL);
1359 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1360 ctrl &= ~E1000_CTRL_SPD_SEL;
1362 /* Disable Auto Speed Detection */
1363 ctrl &= ~E1000_CTRL_ASDE;
1365 /* Disable autoneg on the phy */
1366 *phy_ctrl &= ~MII_CR_AUTO_NEG_EN;
1368 /* Forcing Full or Half Duplex? */
1369 if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) {
1370 ctrl &= ~E1000_CTRL_FD;
1371 *phy_ctrl &= ~MII_CR_FULL_DUPLEX;
1372 hw_dbg("Half Duplex\n");
1374 ctrl |= E1000_CTRL_FD;
1375 *phy_ctrl |= MII_CR_FULL_DUPLEX;
1376 hw_dbg("Full Duplex\n");
1379 /* Forcing 10mb or 100mb? */
1380 if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) {
1381 ctrl |= E1000_CTRL_SPD_100;
1382 *phy_ctrl |= MII_CR_SPEED_100;
1383 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1384 hw_dbg("Forcing 100mb\n");
1386 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1387 *phy_ctrl |= MII_CR_SPEED_10;
1388 *phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1389 hw_dbg("Forcing 10mb\n");
1392 igb_config_collision_dist(hw);
1394 wr32(E1000_CTRL, ctrl);
1398 * igb_set_d3_lplu_state - Sets low power link up state for D3
1399 * @hw: pointer to the HW structure
1400 * @active: boolean used to enable/disable lplu
1402 * Success returns 0, Failure returns 1
1404 * The low power link up (lplu) state is set to the power management level D3
1405 * and SmartSpeed is disabled when active is true, else clear lplu for D3
1406 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1407 * is used during Dx states where the power conservation is most important.
1408 * During driver activity, SmartSpeed should be enabled so performance is
1411 s32 igb_set_d3_lplu_state(struct e1000_hw *hw, bool active)
1413 struct e1000_phy_info *phy = &hw->phy;
1417 if (!(hw->phy.ops.read_reg))
1420 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
1425 data &= ~IGP02E1000_PM_D3_LPLU;
1426 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
1430 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1431 * during Dx states where the power conservation is most
1432 * important. During driver activity we should enable
1433 * SmartSpeed, so performance is maintained.
1435 if (phy->smart_speed == e1000_smart_speed_on) {
1436 ret_val = phy->ops.read_reg(hw,
1437 IGP01E1000_PHY_PORT_CONFIG,
1442 data |= IGP01E1000_PSCFR_SMART_SPEED;
1443 ret_val = phy->ops.write_reg(hw,
1444 IGP01E1000_PHY_PORT_CONFIG,
1448 } else if (phy->smart_speed == e1000_smart_speed_off) {
1449 ret_val = phy->ops.read_reg(hw,
1450 IGP01E1000_PHY_PORT_CONFIG,
1455 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1456 ret_val = phy->ops.write_reg(hw,
1457 IGP01E1000_PHY_PORT_CONFIG,
1462 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1463 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1464 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1465 data |= IGP02E1000_PM_D3_LPLU;
1466 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
1471 /* When LPLU is enabled, we should disable SmartSpeed */
1472 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1477 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1478 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1487 * igb_check_downshift - Checks whether a downshift in speed occurred
1488 * @hw: pointer to the HW structure
1490 * Success returns 0, Failure returns 1
1492 * A downshift is detected by querying the PHY link health.
1494 s32 igb_check_downshift(struct e1000_hw *hw)
1496 struct e1000_phy_info *phy = &hw->phy;
1498 u16 phy_data, offset, mask;
1500 switch (phy->type) {
1501 case e1000_phy_i210:
1503 case e1000_phy_gg82563:
1504 offset = M88E1000_PHY_SPEC_STATUS;
1505 mask = M88E1000_PSSR_DOWNSHIFT;
1507 case e1000_phy_igp_2:
1509 case e1000_phy_igp_3:
1510 offset = IGP01E1000_PHY_LINK_HEALTH;
1511 mask = IGP01E1000_PLHR_SS_DOWNGRADE;
1514 /* speed downshift not supported */
1515 phy->speed_downgraded = false;
1520 ret_val = phy->ops.read_reg(hw, offset, &phy_data);
1523 phy->speed_downgraded = (phy_data & mask) ? true : false;
1530 * igb_check_polarity_m88 - Checks the polarity.
1531 * @hw: pointer to the HW structure
1533 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1535 * Polarity is determined based on the PHY specific status register.
1537 s32 igb_check_polarity_m88(struct e1000_hw *hw)
1539 struct e1000_phy_info *phy = &hw->phy;
1543 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &data);
1546 phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY)
1547 ? e1000_rev_polarity_reversed
1548 : e1000_rev_polarity_normal;
1554 * igb_check_polarity_igp - Checks the polarity.
1555 * @hw: pointer to the HW structure
1557 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
1559 * Polarity is determined based on the PHY port status register, and the
1560 * current speed (since there is no polarity at 100Mbps).
1562 static s32 igb_check_polarity_igp(struct e1000_hw *hw)
1564 struct e1000_phy_info *phy = &hw->phy;
1566 u16 data, offset, mask;
1568 /* Polarity is determined based on the speed of
1571 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data);
1575 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
1576 IGP01E1000_PSSR_SPEED_1000MBPS) {
1577 offset = IGP01E1000_PHY_PCS_INIT_REG;
1578 mask = IGP01E1000_PHY_POLARITY_MASK;
1580 /* This really only applies to 10Mbps since
1581 * there is no polarity for 100Mbps (always 0).
1583 offset = IGP01E1000_PHY_PORT_STATUS;
1584 mask = IGP01E1000_PSSR_POLARITY_REVERSED;
1587 ret_val = phy->ops.read_reg(hw, offset, &data);
1590 phy->cable_polarity = (data & mask)
1591 ? e1000_rev_polarity_reversed
1592 : e1000_rev_polarity_normal;
1599 * igb_wait_autoneg - Wait for auto-neg completion
1600 * @hw: pointer to the HW structure
1602 * Waits for auto-negotiation to complete or for the auto-negotiation time
1603 * limit to expire, which ever happens first.
1605 static s32 igb_wait_autoneg(struct e1000_hw *hw)
1610 /* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */
1611 for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) {
1612 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1615 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1618 if (phy_status & MII_SR_AUTONEG_COMPLETE)
1623 /* PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation
1630 * igb_phy_has_link - Polls PHY for link
1631 * @hw: pointer to the HW structure
1632 * @iterations: number of times to poll for link
1633 * @usec_interval: delay between polling attempts
1634 * @success: pointer to whether polling was successful or not
1636 * Polls the PHY status register for link, 'iterations' number of times.
1638 s32 igb_phy_has_link(struct e1000_hw *hw, u32 iterations,
1639 u32 usec_interval, bool *success)
1644 for (i = 0; i < iterations; i++) {
1645 /* Some PHYs require the PHY_STATUS register to be read
1646 * twice due to the link bit being sticky. No harm doing
1647 * it across the board.
1649 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1650 if (ret_val && usec_interval > 0) {
1651 /* If the first read fails, another entity may have
1652 * ownership of the resources, wait and try again to
1653 * see if they have relinquished the resources yet.
1655 if (usec_interval >= 1000)
1656 mdelay(usec_interval/1000);
1658 udelay(usec_interval);
1660 ret_val = hw->phy.ops.read_reg(hw, PHY_STATUS, &phy_status);
1663 if (phy_status & MII_SR_LINK_STATUS)
1665 if (usec_interval >= 1000)
1666 mdelay(usec_interval/1000);
1668 udelay(usec_interval);
1671 *success = (i < iterations) ? true : false;
1677 * igb_get_cable_length_m88 - Determine cable length for m88 PHY
1678 * @hw: pointer to the HW structure
1680 * Reads the PHY specific status register to retrieve the cable length
1681 * information. The cable length is determined by averaging the minimum and
1682 * maximum values to get the "average" cable length. The m88 PHY has four
1683 * possible cable length values, which are:
1684 * Register Value Cable Length
1688 * 3 110 - 140 meters
1691 s32 igb_get_cable_length_m88(struct e1000_hw *hw)
1693 struct e1000_phy_info *phy = &hw->phy;
1695 u16 phy_data, index;
1697 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1701 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
1702 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
1703 if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) {
1704 ret_val = -E1000_ERR_PHY;
1708 phy->min_cable_length = e1000_m88_cable_length_table[index];
1709 phy->max_cable_length = e1000_m88_cable_length_table[index + 1];
1711 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1717 s32 igb_get_cable_length_m88_gen2(struct e1000_hw *hw)
1719 struct e1000_phy_info *phy = &hw->phy;
1721 u16 phy_data, phy_data2, index, default_page, is_cm;
1723 switch (hw->phy.id) {
1725 /* Get cable length from PHY Cable Diagnostics Control Reg */
1726 ret_val = phy->ops.read_reg(hw, (0x7 << GS40G_PAGE_SHIFT) +
1727 (I347AT4_PCDL + phy->addr),
1732 /* Check if the unit of cable length is meters or cm */
1733 ret_val = phy->ops.read_reg(hw, (0x7 << GS40G_PAGE_SHIFT) +
1734 I347AT4_PCDC, &phy_data2);
1738 is_cm = !(phy_data2 & I347AT4_PCDC_CABLE_LENGTH_UNIT);
1740 /* Populate the phy structure with cable length in meters */
1741 phy->min_cable_length = phy_data / (is_cm ? 100 : 1);
1742 phy->max_cable_length = phy_data / (is_cm ? 100 : 1);
1743 phy->cable_length = phy_data / (is_cm ? 100 : 1);
1745 case M88E1543_E_PHY_ID:
1746 case I347AT4_E_PHY_ID:
1747 /* Remember the original page select and set it to 7 */
1748 ret_val = phy->ops.read_reg(hw, I347AT4_PAGE_SELECT,
1753 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0x07);
1757 /* Get cable length from PHY Cable Diagnostics Control Reg */
1758 ret_val = phy->ops.read_reg(hw, (I347AT4_PCDL + phy->addr),
1763 /* Check if the unit of cable length is meters or cm */
1764 ret_val = phy->ops.read_reg(hw, I347AT4_PCDC, &phy_data2);
1768 is_cm = !(phy_data2 & I347AT4_PCDC_CABLE_LENGTH_UNIT);
1770 /* Populate the phy structure with cable length in meters */
1771 phy->min_cable_length = phy_data / (is_cm ? 100 : 1);
1772 phy->max_cable_length = phy_data / (is_cm ? 100 : 1);
1773 phy->cable_length = phy_data / (is_cm ? 100 : 1);
1775 /* Reset the page selec to its original value */
1776 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT,
1781 case M88E1112_E_PHY_ID:
1782 /* Remember the original page select and set it to 5 */
1783 ret_val = phy->ops.read_reg(hw, I347AT4_PAGE_SELECT,
1788 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0x05);
1792 ret_val = phy->ops.read_reg(hw, M88E1112_VCT_DSP_DISTANCE,
1797 index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
1798 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
1799 if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) {
1800 ret_val = -E1000_ERR_PHY;
1804 phy->min_cable_length = e1000_m88_cable_length_table[index];
1805 phy->max_cable_length = e1000_m88_cable_length_table[index + 1];
1807 phy->cable_length = (phy->min_cable_length +
1808 phy->max_cable_length) / 2;
1810 /* Reset the page select to its original value */
1811 ret_val = phy->ops.write_reg(hw, I347AT4_PAGE_SELECT,
1818 ret_val = -E1000_ERR_PHY;
1827 * igb_get_cable_length_igp_2 - Determine cable length for igp2 PHY
1828 * @hw: pointer to the HW structure
1830 * The automatic gain control (agc) normalizes the amplitude of the
1831 * received signal, adjusting for the attenuation produced by the
1832 * cable. By reading the AGC registers, which represent the
1833 * combination of coarse and fine gain value, the value can be put
1834 * into a lookup table to obtain the approximate cable length
1837 s32 igb_get_cable_length_igp_2(struct e1000_hw *hw)
1839 struct e1000_phy_info *phy = &hw->phy;
1841 u16 phy_data, i, agc_value = 0;
1842 u16 cur_agc_index, max_agc_index = 0;
1843 u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1;
1844 static const u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = {
1845 IGP02E1000_PHY_AGC_A,
1846 IGP02E1000_PHY_AGC_B,
1847 IGP02E1000_PHY_AGC_C,
1848 IGP02E1000_PHY_AGC_D
1851 /* Read the AGC registers for all channels */
1852 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
1853 ret_val = phy->ops.read_reg(hw, agc_reg_array[i], &phy_data);
1857 /* Getting bits 15:9, which represent the combination of
1858 * coarse and fine gain values. The result is a number
1859 * that can be put into the lookup table to obtain the
1860 * approximate cable length.
1862 cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
1863 IGP02E1000_AGC_LENGTH_MASK;
1865 /* Array index bound check. */
1866 if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) ||
1867 (cur_agc_index == 0)) {
1868 ret_val = -E1000_ERR_PHY;
1872 /* Remove min & max AGC values from calculation. */
1873 if (e1000_igp_2_cable_length_table[min_agc_index] >
1874 e1000_igp_2_cable_length_table[cur_agc_index])
1875 min_agc_index = cur_agc_index;
1876 if (e1000_igp_2_cable_length_table[max_agc_index] <
1877 e1000_igp_2_cable_length_table[cur_agc_index])
1878 max_agc_index = cur_agc_index;
1880 agc_value += e1000_igp_2_cable_length_table[cur_agc_index];
1883 agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] +
1884 e1000_igp_2_cable_length_table[max_agc_index]);
1885 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
1887 /* Calculate cable length with the error range of +/- 10 meters. */
1888 phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
1889 (agc_value - IGP02E1000_AGC_RANGE) : 0;
1890 phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE;
1892 phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
1899 * igb_get_phy_info_m88 - Retrieve PHY information
1900 * @hw: pointer to the HW structure
1902 * Valid for only copper links. Read the PHY status register (sticky read)
1903 * to verify that link is up. Read the PHY special control register to
1904 * determine the polarity and 10base-T extended distance. Read the PHY
1905 * special status register to determine MDI/MDIx and current speed. If
1906 * speed is 1000, then determine cable length, local and remote receiver.
1908 s32 igb_get_phy_info_m88(struct e1000_hw *hw)
1910 struct e1000_phy_info *phy = &hw->phy;
1915 if (phy->media_type != e1000_media_type_copper) {
1916 hw_dbg("Phy info is only valid for copper media\n");
1917 ret_val = -E1000_ERR_CONFIG;
1921 ret_val = igb_phy_has_link(hw, 1, 0, &link);
1926 hw_dbg("Phy info is only valid if link is up\n");
1927 ret_val = -E1000_ERR_CONFIG;
1931 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1935 phy->polarity_correction = (phy_data & M88E1000_PSCR_POLARITY_REVERSAL)
1938 ret_val = igb_check_polarity_m88(hw);
1942 ret_val = phy->ops.read_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1946 phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX) ? true : false;
1948 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
1949 ret_val = phy->ops.get_cable_length(hw);
1953 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &phy_data);
1957 phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS)
1958 ? e1000_1000t_rx_status_ok
1959 : e1000_1000t_rx_status_not_ok;
1961 phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS)
1962 ? e1000_1000t_rx_status_ok
1963 : e1000_1000t_rx_status_not_ok;
1965 /* Set values to "undefined" */
1966 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
1967 phy->local_rx = e1000_1000t_rx_status_undefined;
1968 phy->remote_rx = e1000_1000t_rx_status_undefined;
1976 * igb_get_phy_info_igp - Retrieve igp PHY information
1977 * @hw: pointer to the HW structure
1979 * Read PHY status to determine if link is up. If link is up, then
1980 * set/determine 10base-T extended distance and polarity correction. Read
1981 * PHY port status to determine MDI/MDIx and speed. Based on the speed,
1982 * determine on the cable length, local and remote receiver.
1984 s32 igb_get_phy_info_igp(struct e1000_hw *hw)
1986 struct e1000_phy_info *phy = &hw->phy;
1991 ret_val = igb_phy_has_link(hw, 1, 0, &link);
1996 hw_dbg("Phy info is only valid if link is up\n");
1997 ret_val = -E1000_ERR_CONFIG;
2001 phy->polarity_correction = true;
2003 ret_val = igb_check_polarity_igp(hw);
2007 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_STATUS, &data);
2011 phy->is_mdix = (data & IGP01E1000_PSSR_MDIX) ? true : false;
2013 if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
2014 IGP01E1000_PSSR_SPEED_1000MBPS) {
2015 ret_val = phy->ops.get_cable_length(hw);
2019 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data);
2023 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
2024 ? e1000_1000t_rx_status_ok
2025 : e1000_1000t_rx_status_not_ok;
2027 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
2028 ? e1000_1000t_rx_status_ok
2029 : e1000_1000t_rx_status_not_ok;
2031 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
2032 phy->local_rx = e1000_1000t_rx_status_undefined;
2033 phy->remote_rx = e1000_1000t_rx_status_undefined;
2041 * igb_phy_sw_reset - PHY software reset
2042 * @hw: pointer to the HW structure
2044 * Does a software reset of the PHY by reading the PHY control register and
2045 * setting/write the control register reset bit to the PHY.
2047 s32 igb_phy_sw_reset(struct e1000_hw *hw)
2052 if (!(hw->phy.ops.read_reg))
2055 ret_val = hw->phy.ops.read_reg(hw, PHY_CONTROL, &phy_ctrl);
2059 phy_ctrl |= MII_CR_RESET;
2060 ret_val = hw->phy.ops.write_reg(hw, PHY_CONTROL, phy_ctrl);
2071 * igb_phy_hw_reset - PHY hardware reset
2072 * @hw: pointer to the HW structure
2074 * Verify the reset block is not blocking us from resetting. Acquire
2075 * semaphore (if necessary) and read/set/write the device control reset
2076 * bit in the PHY. Wait the appropriate delay time for the device to
2077 * reset and release the semaphore (if necessary).
2079 s32 igb_phy_hw_reset(struct e1000_hw *hw)
2081 struct e1000_phy_info *phy = &hw->phy;
2085 ret_val = igb_check_reset_block(hw);
2091 ret_val = phy->ops.acquire(hw);
2095 ctrl = rd32(E1000_CTRL);
2096 wr32(E1000_CTRL, ctrl | E1000_CTRL_PHY_RST);
2099 udelay(phy->reset_delay_us);
2101 wr32(E1000_CTRL, ctrl);
2106 phy->ops.release(hw);
2108 ret_val = phy->ops.get_cfg_done(hw);
2115 * igb_phy_init_script_igp3 - Inits the IGP3 PHY
2116 * @hw: pointer to the HW structure
2118 * Initializes a Intel Gigabit PHY3 when an EEPROM is not present.
2120 s32 igb_phy_init_script_igp3(struct e1000_hw *hw)
2122 hw_dbg("Running IGP 3 PHY init script\n");
2124 /* PHY init IGP 3 */
2125 /* Enable rise/fall, 10-mode work in class-A */
2126 hw->phy.ops.write_reg(hw, 0x2F5B, 0x9018);
2127 /* Remove all caps from Replica path filter */
2128 hw->phy.ops.write_reg(hw, 0x2F52, 0x0000);
2129 /* Bias trimming for ADC, AFE and Driver (Default) */
2130 hw->phy.ops.write_reg(hw, 0x2FB1, 0x8B24);
2131 /* Increase Hybrid poly bias */
2132 hw->phy.ops.write_reg(hw, 0x2FB2, 0xF8F0);
2133 /* Add 4% to TX amplitude in Giga mode */
2134 hw->phy.ops.write_reg(hw, 0x2010, 0x10B0);
2135 /* Disable trimming (TTT) */
2136 hw->phy.ops.write_reg(hw, 0x2011, 0x0000);
2137 /* Poly DC correction to 94.6% + 2% for all channels */
2138 hw->phy.ops.write_reg(hw, 0x20DD, 0x249A);
2139 /* ABS DC correction to 95.9% */
2140 hw->phy.ops.write_reg(hw, 0x20DE, 0x00D3);
2141 /* BG temp curve trim */
2142 hw->phy.ops.write_reg(hw, 0x28B4, 0x04CE);
2143 /* Increasing ADC OPAMP stage 1 currents to max */
2144 hw->phy.ops.write_reg(hw, 0x2F70, 0x29E4);
2145 /* Force 1000 ( required for enabling PHY regs configuration) */
2146 hw->phy.ops.write_reg(hw, 0x0000, 0x0140);
2147 /* Set upd_freq to 6 */
2148 hw->phy.ops.write_reg(hw, 0x1F30, 0x1606);
2150 hw->phy.ops.write_reg(hw, 0x1F31, 0xB814);
2151 /* Disable adaptive fixed FFE (Default) */
2152 hw->phy.ops.write_reg(hw, 0x1F35, 0x002A);
2153 /* Enable FFE hysteresis */
2154 hw->phy.ops.write_reg(hw, 0x1F3E, 0x0067);
2155 /* Fixed FFE for short cable lengths */
2156 hw->phy.ops.write_reg(hw, 0x1F54, 0x0065);
2157 /* Fixed FFE for medium cable lengths */
2158 hw->phy.ops.write_reg(hw, 0x1F55, 0x002A);
2159 /* Fixed FFE for long cable lengths */
2160 hw->phy.ops.write_reg(hw, 0x1F56, 0x002A);
2161 /* Enable Adaptive Clip Threshold */
2162 hw->phy.ops.write_reg(hw, 0x1F72, 0x3FB0);
2163 /* AHT reset limit to 1 */
2164 hw->phy.ops.write_reg(hw, 0x1F76, 0xC0FF);
2165 /* Set AHT master delay to 127 msec */
2166 hw->phy.ops.write_reg(hw, 0x1F77, 0x1DEC);
2167 /* Set scan bits for AHT */
2168 hw->phy.ops.write_reg(hw, 0x1F78, 0xF9EF);
2169 /* Set AHT Preset bits */
2170 hw->phy.ops.write_reg(hw, 0x1F79, 0x0210);
2171 /* Change integ_factor of channel A to 3 */
2172 hw->phy.ops.write_reg(hw, 0x1895, 0x0003);
2173 /* Change prop_factor of channels BCD to 8 */
2174 hw->phy.ops.write_reg(hw, 0x1796, 0x0008);
2175 /* Change cg_icount + enable integbp for channels BCD */
2176 hw->phy.ops.write_reg(hw, 0x1798, 0xD008);
2177 /* Change cg_icount + enable integbp + change prop_factor_master
2178 * to 8 for channel A
2180 hw->phy.ops.write_reg(hw, 0x1898, 0xD918);
2181 /* Disable AHT in Slave mode on channel A */
2182 hw->phy.ops.write_reg(hw, 0x187A, 0x0800);
2183 /* Enable LPLU and disable AN to 1000 in non-D0a states,
2186 hw->phy.ops.write_reg(hw, 0x0019, 0x008D);
2187 /* Enable restart AN on an1000_dis change */
2188 hw->phy.ops.write_reg(hw, 0x001B, 0x2080);
2189 /* Enable wh_fifo read clock in 10/100 modes */
2190 hw->phy.ops.write_reg(hw, 0x0014, 0x0045);
2191 /* Restart AN, Speed selection is 1000 */
2192 hw->phy.ops.write_reg(hw, 0x0000, 0x1340);
2198 * igb_power_up_phy_copper - Restore copper link in case of PHY power down
2199 * @hw: pointer to the HW structure
2201 * In the case of a PHY power down to save power, or to turn off link during a
2202 * driver unload, restore the link to previous settings.
2204 void igb_power_up_phy_copper(struct e1000_hw *hw)
2208 /* The PHY will retain its settings across a power down/up cycle */
2209 hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
2210 mii_reg &= ~MII_CR_POWER_DOWN;
2211 hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
2215 * igb_power_down_phy_copper - Power down copper PHY
2216 * @hw: pointer to the HW structure
2218 * Power down PHY to save power when interface is down and wake on lan
2221 void igb_power_down_phy_copper(struct e1000_hw *hw)
2225 /* The PHY will retain its settings across a power down/up cycle */
2226 hw->phy.ops.read_reg(hw, PHY_CONTROL, &mii_reg);
2227 mii_reg |= MII_CR_POWER_DOWN;
2228 hw->phy.ops.write_reg(hw, PHY_CONTROL, mii_reg);
2229 usleep_range(1000, 2000);
2233 * igb_check_polarity_82580 - Checks the polarity.
2234 * @hw: pointer to the HW structure
2236 * Success returns 0, Failure returns -E1000_ERR_PHY (-2)
2238 * Polarity is determined based on the PHY specific status register.
2240 static s32 igb_check_polarity_82580(struct e1000_hw *hw)
2242 struct e1000_phy_info *phy = &hw->phy;
2247 ret_val = phy->ops.read_reg(hw, I82580_PHY_STATUS_2, &data);
2250 phy->cable_polarity = (data & I82580_PHY_STATUS2_REV_POLARITY)
2251 ? e1000_rev_polarity_reversed
2252 : e1000_rev_polarity_normal;
2258 * igb_phy_force_speed_duplex_82580 - Force speed/duplex for I82580 PHY
2259 * @hw: pointer to the HW structure
2261 * Calls the PHY setup function to force speed and duplex. Clears the
2262 * auto-crossover to force MDI manually. Waits for link and returns
2263 * successful if link up is successful, else -E1000_ERR_PHY (-2).
2265 s32 igb_phy_force_speed_duplex_82580(struct e1000_hw *hw)
2267 struct e1000_phy_info *phy = &hw->phy;
2272 ret_val = phy->ops.read_reg(hw, PHY_CONTROL, &phy_data);
2276 igb_phy_force_speed_duplex_setup(hw, &phy_data);
2278 ret_val = phy->ops.write_reg(hw, PHY_CONTROL, phy_data);
2282 /* Clear Auto-Crossover to force MDI manually. 82580 requires MDI
2283 * forced whenever speed and duplex are forced.
2285 ret_val = phy->ops.read_reg(hw, I82580_PHY_CTRL_2, &phy_data);
2289 phy_data &= ~I82580_PHY_CTRL2_MDIX_CFG_MASK;
2291 ret_val = phy->ops.write_reg(hw, I82580_PHY_CTRL_2, phy_data);
2295 hw_dbg("I82580_PHY_CTRL_2: %X\n", phy_data);
2299 if (phy->autoneg_wait_to_complete) {
2300 hw_dbg("Waiting for forced speed/duplex link on 82580 phy\n");
2302 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 100000, &link);
2307 hw_dbg("Link taking longer than expected.\n");
2310 ret_val = igb_phy_has_link(hw, PHY_FORCE_LIMIT, 100000, &link);
2320 * igb_get_phy_info_82580 - Retrieve I82580 PHY information
2321 * @hw: pointer to the HW structure
2323 * Read PHY status to determine if link is up. If link is up, then
2324 * set/determine 10base-T extended distance and polarity correction. Read
2325 * PHY port status to determine MDI/MDIx and speed. Based on the speed,
2326 * determine on the cable length, local and remote receiver.
2328 s32 igb_get_phy_info_82580(struct e1000_hw *hw)
2330 struct e1000_phy_info *phy = &hw->phy;
2335 ret_val = igb_phy_has_link(hw, 1, 0, &link);
2340 hw_dbg("Phy info is only valid if link is up\n");
2341 ret_val = -E1000_ERR_CONFIG;
2345 phy->polarity_correction = true;
2347 ret_val = igb_check_polarity_82580(hw);
2351 ret_val = phy->ops.read_reg(hw, I82580_PHY_STATUS_2, &data);
2355 phy->is_mdix = (data & I82580_PHY_STATUS2_MDIX) ? true : false;
2357 if ((data & I82580_PHY_STATUS2_SPEED_MASK) ==
2358 I82580_PHY_STATUS2_SPEED_1000MBPS) {
2359 ret_val = hw->phy.ops.get_cable_length(hw);
2363 ret_val = phy->ops.read_reg(hw, PHY_1000T_STATUS, &data);
2367 phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
2368 ? e1000_1000t_rx_status_ok
2369 : e1000_1000t_rx_status_not_ok;
2371 phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
2372 ? e1000_1000t_rx_status_ok
2373 : e1000_1000t_rx_status_not_ok;
2375 phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
2376 phy->local_rx = e1000_1000t_rx_status_undefined;
2377 phy->remote_rx = e1000_1000t_rx_status_undefined;
2385 * igb_get_cable_length_82580 - Determine cable length for 82580 PHY
2386 * @hw: pointer to the HW structure
2388 * Reads the diagnostic status register and verifies result is valid before
2389 * placing it in the phy_cable_length field.
2391 s32 igb_get_cable_length_82580(struct e1000_hw *hw)
2393 struct e1000_phy_info *phy = &hw->phy;
2395 u16 phy_data, length;
2397 ret_val = phy->ops.read_reg(hw, I82580_PHY_DIAG_STATUS, &phy_data);
2401 length = (phy_data & I82580_DSTATUS_CABLE_LENGTH) >>
2402 I82580_DSTATUS_CABLE_LENGTH_SHIFT;
2404 if (length == E1000_CABLE_LENGTH_UNDEFINED)
2405 ret_val = -E1000_ERR_PHY;
2407 phy->cable_length = length;
2414 * igb_write_phy_reg_gs40g - Write GS40G PHY register
2415 * @hw: pointer to the HW structure
2416 * @offset: lower half is register offset to write to
2417 * upper half is page to use.
2418 * @data: data to write at register offset
2420 * Acquires semaphore, if necessary, then writes the data to PHY register
2421 * at the offset. Release any acquired semaphores before exiting.
2423 s32 igb_write_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 data)
2426 u16 page = offset >> GS40G_PAGE_SHIFT;
2428 offset = offset & GS40G_OFFSET_MASK;
2429 ret_val = hw->phy.ops.acquire(hw);
2433 ret_val = igb_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page);
2436 ret_val = igb_write_phy_reg_mdic(hw, offset, data);
2439 hw->phy.ops.release(hw);
2444 * igb_read_phy_reg_gs40g - Read GS40G PHY register
2445 * @hw: pointer to the HW structure
2446 * @offset: lower half is register offset to read to
2447 * upper half is page to use.
2448 * @data: data to read at register offset
2450 * Acquires semaphore, if necessary, then reads the data in the PHY register
2451 * at the offset. Release any acquired semaphores before exiting.
2453 s32 igb_read_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 *data)
2456 u16 page = offset >> GS40G_PAGE_SHIFT;
2458 offset = offset & GS40G_OFFSET_MASK;
2459 ret_val = hw->phy.ops.acquire(hw);
2463 ret_val = igb_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page);
2466 ret_val = igb_read_phy_reg_mdic(hw, offset, data);
2469 hw->phy.ops.release(hw);
2474 * igb_set_master_slave_mode - Setup PHY for Master/slave mode
2475 * @hw: pointer to the HW structure
2477 * Sets up Master/slave mode
2479 static s32 igb_set_master_slave_mode(struct e1000_hw *hw)
2484 /* Resolve Master/Slave mode */
2485 ret_val = hw->phy.ops.read_reg(hw, PHY_1000T_CTRL, &phy_data);
2489 /* load defaults for future use */
2490 hw->phy.original_ms_type = (phy_data & CR_1000T_MS_ENABLE) ?
2491 ((phy_data & CR_1000T_MS_VALUE) ?
2492 e1000_ms_force_master :
2493 e1000_ms_force_slave) : e1000_ms_auto;
2495 switch (hw->phy.ms_type) {
2496 case e1000_ms_force_master:
2497 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
2499 case e1000_ms_force_slave:
2500 phy_data |= CR_1000T_MS_ENABLE;
2501 phy_data &= ~(CR_1000T_MS_VALUE);
2504 phy_data &= ~CR_1000T_MS_ENABLE;
2510 return hw->phy.ops.write_reg(hw, PHY_1000T_CTRL, phy_data);