1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2009 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/pci.h>
29 #include <linux/delay.h>
30 #include <linux/sched.h>
32 #include "ixgbe_common.h"
33 #include "ixgbe_phy.h"
35 static void ixgbe_i2c_start(struct ixgbe_hw *hw);
36 static void ixgbe_i2c_stop(struct ixgbe_hw *hw);
37 static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data);
38 static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data);
39 static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw);
40 static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data);
41 static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data);
42 static s32 ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
43 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
44 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data);
45 static bool ixgbe_get_i2c_data(u32 *i2cctl);
46 static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw);
47 static bool ixgbe_validate_phy_addr(struct ixgbe_hw *hw, u32 phy_addr);
48 static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id);
49 static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw);
52 * ixgbe_identify_phy_generic - Get physical layer module
53 * @hw: pointer to hardware structure
55 * Determines the physical layer module found on the current adapter.
57 s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw)
59 s32 status = IXGBE_ERR_PHY_ADDR_INVALID;
62 if (hw->phy.type == ixgbe_phy_unknown) {
63 for (phy_addr = 0; phy_addr < IXGBE_MAX_PHY_ADDR; phy_addr++) {
64 if (ixgbe_validate_phy_addr(hw, phy_addr)) {
65 hw->phy.addr = phy_addr;
68 ixgbe_get_phy_type_from_id(hw->phy.id);
81 * ixgbe_validate_phy_addr - Determines phy address is valid
82 * @hw: pointer to hardware structure
85 static bool ixgbe_validate_phy_addr(struct ixgbe_hw *hw, u32 phy_addr)
90 hw->phy.addr = phy_addr;
91 hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_ID_HIGH,
92 IXGBE_MDIO_PMA_PMD_DEV_TYPE, &phy_id);
94 if (phy_id != 0xFFFF && phy_id != 0x0)
101 * ixgbe_get_phy_id - Get the phy type
102 * @hw: pointer to hardware structure
105 static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw)
111 status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_ID_HIGH,
112 IXGBE_MDIO_PMA_PMD_DEV_TYPE,
116 hw->phy.id = (u32)(phy_id_high << 16);
117 status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_ID_LOW,
118 IXGBE_MDIO_PMA_PMD_DEV_TYPE,
120 hw->phy.id |= (u32)(phy_id_low & IXGBE_PHY_REVISION_MASK);
121 hw->phy.revision = (u32)(phy_id_low & ~IXGBE_PHY_REVISION_MASK);
127 * ixgbe_get_phy_type_from_id - Get the phy type
128 * @hw: pointer to hardware structure
131 static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id)
133 enum ixgbe_phy_type phy_type;
137 phy_type = ixgbe_phy_tn;
140 phy_type = ixgbe_phy_qt;
143 phy_type = ixgbe_phy_nl;
146 phy_type = ixgbe_phy_unknown;
154 * ixgbe_reset_phy_generic - Performs a PHY reset
155 * @hw: pointer to hardware structure
157 s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw)
160 * Perform soft PHY reset to the PHY_XS.
161 * This will cause a soft reset to the PHY
163 return hw->phy.ops.write_reg(hw, IXGBE_MDIO_PHY_XS_CONTROL,
164 IXGBE_MDIO_PHY_XS_DEV_TYPE,
165 IXGBE_MDIO_PHY_XS_RESET);
169 * ixgbe_read_phy_reg_generic - Reads a value from a specified PHY register
170 * @hw: pointer to hardware structure
171 * @reg_addr: 32 bit address of PHY register to read
172 * @phy_data: Pointer to read data from PHY register
174 s32 ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
175 u32 device_type, u16 *phy_data)
183 if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
184 gssr = IXGBE_GSSR_PHY1_SM;
186 gssr = IXGBE_GSSR_PHY0_SM;
188 if (ixgbe_acquire_swfw_sync(hw, gssr) != 0)
189 status = IXGBE_ERR_SWFW_SYNC;
192 /* Setup and write the address cycle command */
193 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
194 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
195 (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
196 (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND));
198 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
201 * Check every 10 usec to see if the address cycle completed.
202 * The MDI Command bit will clear when the operation is
205 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
208 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
210 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
214 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
215 hw_dbg(hw, "PHY address command did not complete.\n");
216 status = IXGBE_ERR_PHY;
221 * Address cycle complete, setup and write the read
224 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
225 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
226 (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
227 (IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND));
229 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
232 * Check every 10 usec to see if the address cycle
233 * completed. The MDI Command bit will clear when the
234 * operation is complete
236 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
239 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
241 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
245 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
246 hw_dbg(hw, "PHY read command didn't complete\n");
247 status = IXGBE_ERR_PHY;
250 * Read operation is complete. Get the data
253 data = IXGBE_READ_REG(hw, IXGBE_MSRWD);
254 data >>= IXGBE_MSRWD_READ_DATA_SHIFT;
255 *phy_data = (u16)(data);
259 ixgbe_release_swfw_sync(hw, gssr);
266 * ixgbe_write_phy_reg_generic - Writes a value to specified PHY register
267 * @hw: pointer to hardware structure
268 * @reg_addr: 32 bit PHY register to write
269 * @device_type: 5 bit device type
270 * @phy_data: Data to write to the PHY register
272 s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
273 u32 device_type, u16 phy_data)
280 if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
281 gssr = IXGBE_GSSR_PHY1_SM;
283 gssr = IXGBE_GSSR_PHY0_SM;
285 if (ixgbe_acquire_swfw_sync(hw, gssr) != 0)
286 status = IXGBE_ERR_SWFW_SYNC;
289 /* Put the data in the MDI single read and write data register*/
290 IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data);
292 /* Setup and write the address cycle command */
293 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
294 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
295 (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
296 (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND));
298 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
301 * Check every 10 usec to see if the address cycle completed.
302 * The MDI Command bit will clear when the operation is
305 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
308 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
310 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
314 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
315 hw_dbg(hw, "PHY address cmd didn't complete\n");
316 status = IXGBE_ERR_PHY;
321 * Address cycle complete, setup and write the write
324 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
325 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
326 (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
327 (IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND));
329 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
332 * Check every 10 usec to see if the address cycle
333 * completed. The MDI Command bit will clear when the
334 * operation is complete
336 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
339 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
341 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
345 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
346 hw_dbg(hw, "PHY address cmd didn't complete\n");
347 status = IXGBE_ERR_PHY;
351 ixgbe_release_swfw_sync(hw, gssr);
358 * ixgbe_setup_phy_link_generic - Set and restart autoneg
359 * @hw: pointer to hardware structure
361 * Restart autonegotiation and PHY and waits for completion.
363 s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
365 s32 status = IXGBE_NOT_IMPLEMENTED;
367 u32 max_time_out = 10;
368 u16 autoneg_reg = IXGBE_MII_AUTONEG_REG;
371 * Set advertisement settings in PHY based on autoneg_advertised
372 * settings. If autoneg_advertised = 0, then advertise default values
373 * tnx devices cannot be "forced" to a autoneg 10G and fail. But can
376 hw->phy.ops.read_reg(hw, IXGBE_MII_SPEED_SELECTION_REG,
377 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &autoneg_reg);
379 if (hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_1GB_FULL)
380 autoneg_reg &= 0xEFFF; /* 0 in bit 12 is 1G operation */
382 autoneg_reg |= 0x1000; /* 1 in bit 12 is 10G/1G operation */
384 hw->phy.ops.write_reg(hw, IXGBE_MII_SPEED_SELECTION_REG,
385 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, autoneg_reg);
387 /* Restart PHY autonegotiation and wait for completion */
388 hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
389 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &autoneg_reg);
391 autoneg_reg |= IXGBE_MII_RESTART;
393 hw->phy.ops.write_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
394 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, autoneg_reg);
396 /* Wait for autonegotiation to finish */
397 for (time_out = 0; time_out < max_time_out; time_out++) {
399 /* Restart PHY autonegotiation and wait for completion */
400 status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
401 IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
404 autoneg_reg &= IXGBE_MII_AUTONEG_COMPLETE;
405 if (autoneg_reg == IXGBE_MII_AUTONEG_COMPLETE) {
411 if (time_out == max_time_out)
412 status = IXGBE_ERR_LINK_SETUP;
418 * ixgbe_setup_phy_link_speed_generic - Sets the auto advertised capabilities
419 * @hw: pointer to hardware structure
420 * @speed: new link speed
421 * @autoneg: true if autonegotiation enabled
423 s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw,
424 ixgbe_link_speed speed,
426 bool autoneg_wait_to_complete)
430 * Clear autoneg_advertised and set new values based on input link
433 hw->phy.autoneg_advertised = 0;
435 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
436 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
438 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
439 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
441 /* Setup link based on the new speed settings */
442 hw->phy.ops.setup_link(hw);
448 * ixgbe_reset_phy_nl - Performs a PHY reset
449 * @hw: pointer to hardware structure
451 s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw)
453 u16 phy_offset, control, eword, edata, block_crc;
454 bool end_data = false;
455 u16 list_offset, data_offset;
460 hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_XS_CONTROL,
461 IXGBE_MDIO_PHY_XS_DEV_TYPE, &phy_data);
463 /* reset the PHY and poll for completion */
464 hw->phy.ops.write_reg(hw, IXGBE_MDIO_PHY_XS_CONTROL,
465 IXGBE_MDIO_PHY_XS_DEV_TYPE,
466 (phy_data | IXGBE_MDIO_PHY_XS_RESET));
468 for (i = 0; i < 100; i++) {
469 hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_XS_CONTROL,
470 IXGBE_MDIO_PHY_XS_DEV_TYPE, &phy_data);
471 if ((phy_data & IXGBE_MDIO_PHY_XS_RESET) == 0)
476 if ((phy_data & IXGBE_MDIO_PHY_XS_RESET) != 0) {
477 hw_dbg(hw, "PHY reset did not complete.\n");
478 ret_val = IXGBE_ERR_PHY;
482 /* Get init offsets */
483 ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset,
488 ret_val = hw->eeprom.ops.read(hw, data_offset, &block_crc);
492 * Read control word from PHY init contents offset
494 ret_val = hw->eeprom.ops.read(hw, data_offset, &eword);
495 control = (eword & IXGBE_CONTROL_MASK_NL) >>
496 IXGBE_CONTROL_SHIFT_NL;
497 edata = eword & IXGBE_DATA_MASK_NL;
501 hw_dbg(hw, "DELAY: %d MS\n", edata);
505 hw_dbg(hw, "DATA: \n");
507 hw->eeprom.ops.read(hw, data_offset++,
509 for (i = 0; i < edata; i++) {
510 hw->eeprom.ops.read(hw, data_offset, &eword);
511 hw->phy.ops.write_reg(hw, phy_offset,
512 IXGBE_TWINAX_DEV, eword);
513 hw_dbg(hw, "Wrote %4.4x to %4.4x\n", eword,
519 case IXGBE_CONTROL_NL:
521 hw_dbg(hw, "CONTROL: \n");
522 if (edata == IXGBE_CONTROL_EOL_NL) {
525 } else if (edata == IXGBE_CONTROL_SOL_NL) {
528 hw_dbg(hw, "Bad control value\n");
529 ret_val = IXGBE_ERR_PHY;
534 hw_dbg(hw, "Bad control type\n");
535 ret_val = IXGBE_ERR_PHY;
545 * ixgbe_identify_sfp_module_generic - Identifies SFP module and assigns
547 * @hw: pointer to hardware structure
549 * Searches for and indentifies the SFP module. Assings appropriate PHY type.
551 s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
553 s32 status = IXGBE_ERR_PHY_ADDR_INVALID;
555 enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
557 u8 comp_codes_1g = 0;
558 u8 comp_codes_10g = 0;
559 u8 oui_bytes[3] = {0, 0, 0};
560 u8 transmission_media = 0;
563 status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER,
566 if (status == IXGBE_ERR_SFP_NOT_PRESENT) {
567 hw->phy.sfp_type = ixgbe_sfp_type_not_present;
571 if (identifier == IXGBE_SFF_IDENTIFIER_SFP) {
572 hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_1GBE_COMP_CODES,
574 hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_10GBE_COMP_CODES,
576 hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_TRANSMISSION_MEDIA,
577 &transmission_media);
584 * 3 SFP_DA_CORE0 - 82599-specific
585 * 4 SFP_DA_CORE1 - 82599-specific
586 * 5 SFP_SR/LR_CORE0 - 82599-specific
587 * 6 SFP_SR/LR_CORE1 - 82599-specific
589 if (hw->mac.type == ixgbe_mac_82598EB) {
590 if (transmission_media & IXGBE_SFF_TWIN_AX_CAPABLE)
591 hw->phy.sfp_type = ixgbe_sfp_type_da_cu;
592 else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
593 hw->phy.sfp_type = ixgbe_sfp_type_sr;
594 else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
595 hw->phy.sfp_type = ixgbe_sfp_type_lr;
597 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
598 } else if (hw->mac.type == ixgbe_mac_82599EB) {
599 if (transmission_media & IXGBE_SFF_TWIN_AX_CAPABLE)
600 if (hw->bus.lan_id == 0)
602 ixgbe_sfp_type_da_cu_core0;
605 ixgbe_sfp_type_da_cu_core1;
606 else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
607 if (hw->bus.lan_id == 0)
609 ixgbe_sfp_type_srlr_core0;
612 ixgbe_sfp_type_srlr_core1;
613 else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
614 if (hw->bus.lan_id == 0)
616 ixgbe_sfp_type_srlr_core0;
619 ixgbe_sfp_type_srlr_core1;
621 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
624 if (hw->phy.sfp_type != stored_sfp_type)
625 hw->phy.sfp_setup_needed = true;
627 /* Determine if the SFP+ PHY is dual speed or not. */
628 if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) &&
629 (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) ||
630 ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) &&
631 (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)))
632 hw->phy.multispeed_fiber = true;
634 /* Determine PHY vendor */
635 if (hw->phy.type != ixgbe_phy_nl) {
636 hw->phy.id = identifier;
637 hw->phy.ops.read_i2c_eeprom(hw,
638 IXGBE_SFF_VENDOR_OUI_BYTE0,
640 hw->phy.ops.read_i2c_eeprom(hw,
641 IXGBE_SFF_VENDOR_OUI_BYTE1,
643 hw->phy.ops.read_i2c_eeprom(hw,
644 IXGBE_SFF_VENDOR_OUI_BYTE2,
648 ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) |
649 (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) |
650 (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT));
652 switch (vendor_oui) {
653 case IXGBE_SFF_VENDOR_OUI_TYCO:
654 if (transmission_media &
655 IXGBE_SFF_TWIN_AX_CAPABLE)
656 hw->phy.type = ixgbe_phy_tw_tyco;
658 case IXGBE_SFF_VENDOR_OUI_FTL:
659 hw->phy.type = ixgbe_phy_sfp_ftl;
661 case IXGBE_SFF_VENDOR_OUI_AVAGO:
662 hw->phy.type = ixgbe_phy_sfp_avago;
664 case IXGBE_SFF_VENDOR_OUI_INTEL:
665 hw->phy.type = ixgbe_phy_sfp_intel;
668 if (transmission_media &
669 IXGBE_SFF_TWIN_AX_CAPABLE)
670 hw->phy.type = ixgbe_phy_tw_unknown;
672 hw->phy.type = ixgbe_phy_sfp_unknown;
677 /* All DA cables are supported */
678 if (transmission_media & IXGBE_SFF_TWIN_AX_CAPABLE) {
683 /* 1G SFP modules are not supported */
684 if (comp_codes_10g == 0) {
685 hw->phy.type = ixgbe_phy_sfp_unsupported;
686 status = IXGBE_ERR_SFP_NOT_SUPPORTED;
690 /* Anything else 82598-based is supported */
691 if (hw->mac.type == ixgbe_mac_82598EB) {
696 /* This is guaranteed to be 82599, no need to check for NULL */
697 hw->mac.ops.get_device_caps(hw, &enforce_sfp);
698 if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP)) {
699 /* Make sure we're a supported PHY type */
700 if (hw->phy.type == ixgbe_phy_sfp_intel) {
703 hw_dbg(hw, "SFP+ module not supported\n");
704 hw->phy.type = ixgbe_phy_sfp_unsupported;
705 status = IXGBE_ERR_SFP_NOT_SUPPORTED;
717 * ixgbe_get_sfp_init_sequence_offsets - Checks the MAC's EEPROM to see
718 * if it supports a given SFP+ module type, if so it returns the offsets to the
719 * phy init sequence block.
720 * @hw: pointer to hardware structure
721 * @list_offset: offset to the SFP ID list
722 * @data_offset: offset to the SFP data block
724 s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
730 if (hw->phy.sfp_type == ixgbe_sfp_type_unknown)
731 return IXGBE_ERR_SFP_NOT_SUPPORTED;
733 if (hw->phy.sfp_type == ixgbe_sfp_type_not_present)
734 return IXGBE_ERR_SFP_NOT_PRESENT;
736 if ((hw->device_id == IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM) &&
737 (hw->phy.sfp_type == ixgbe_sfp_type_da_cu))
738 return IXGBE_ERR_SFP_NOT_SUPPORTED;
740 /* Read offset to PHY init contents */
741 hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset);
743 if ((!*list_offset) || (*list_offset == 0xFFFF))
744 return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT;
746 /* Shift offset to first ID word */
750 * Find the matching SFP ID in the EEPROM
751 * and program the init sequence
753 hw->eeprom.ops.read(hw, *list_offset, &sfp_id);
755 while (sfp_id != IXGBE_PHY_INIT_END_NL) {
756 if (sfp_id == hw->phy.sfp_type) {
758 hw->eeprom.ops.read(hw, *list_offset, data_offset);
759 if ((!*data_offset) || (*data_offset == 0xFFFF)) {
760 hw_dbg(hw, "SFP+ module not supported\n");
761 return IXGBE_ERR_SFP_NOT_SUPPORTED;
767 if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id))
768 return IXGBE_ERR_PHY;
772 if (sfp_id == IXGBE_PHY_INIT_END_NL) {
773 hw_dbg(hw, "No matching SFP+ module found\n");
774 return IXGBE_ERR_SFP_NOT_SUPPORTED;
781 * ixgbe_read_i2c_eeprom_generic - Reads 8 bit EEPROM word over I2C interface
782 * @hw: pointer to hardware structure
783 * @byte_offset: EEPROM byte offset to read
784 * @eeprom_data: value read
786 * Performs byte read operation to SFP module's EEPROM over I2C interface.
788 s32 ixgbe_read_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
791 return hw->phy.ops.read_i2c_byte(hw, byte_offset,
792 IXGBE_I2C_EEPROM_DEV_ADDR,
797 * ixgbe_write_i2c_eeprom_generic - Writes 8 bit EEPROM word over I2C interface
798 * @hw: pointer to hardware structure
799 * @byte_offset: EEPROM byte offset to write
800 * @eeprom_data: value to write
802 * Performs byte write operation to SFP module's EEPROM over I2C interface.
804 s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
807 return hw->phy.ops.write_i2c_byte(hw, byte_offset,
808 IXGBE_I2C_EEPROM_DEV_ADDR,
813 * ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C
814 * @hw: pointer to hardware structure
815 * @byte_offset: byte offset to read
818 * Performs byte read operation to SFP module's EEPROM over I2C interface at
819 * a specified deivce address.
821 s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
822 u8 dev_addr, u8 *data)
832 /* Device Address and write indication */
833 status = ixgbe_clock_out_i2c_byte(hw, dev_addr);
837 status = ixgbe_get_i2c_ack(hw);
841 status = ixgbe_clock_out_i2c_byte(hw, byte_offset);
845 status = ixgbe_get_i2c_ack(hw);
851 /* Device Address and read indication */
852 status = ixgbe_clock_out_i2c_byte(hw, (dev_addr | 0x1));
856 status = ixgbe_get_i2c_ack(hw);
860 status = ixgbe_clock_in_i2c_byte(hw, data);
864 status = ixgbe_clock_out_i2c_bit(hw, nack);
872 ixgbe_i2c_bus_clear(hw);
874 if (retry < max_retry)
875 hw_dbg(hw, "I2C byte read error - Retrying.\n");
877 hw_dbg(hw, "I2C byte read error.\n");
879 } while (retry < max_retry);
885 * ixgbe_write_i2c_byte_generic - Writes 8 bit word over I2C
886 * @hw: pointer to hardware structure
887 * @byte_offset: byte offset to write
888 * @data: value to write
890 * Performs byte write operation to SFP module's EEPROM over I2C interface at
891 * a specified device address.
893 s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
894 u8 dev_addr, u8 data)
903 status = ixgbe_clock_out_i2c_byte(hw, dev_addr);
907 status = ixgbe_get_i2c_ack(hw);
911 status = ixgbe_clock_out_i2c_byte(hw, byte_offset);
915 status = ixgbe_get_i2c_ack(hw);
919 status = ixgbe_clock_out_i2c_byte(hw, data);
923 status = ixgbe_get_i2c_ack(hw);
931 ixgbe_i2c_bus_clear(hw);
933 if (retry < max_retry)
934 hw_dbg(hw, "I2C byte write error - Retrying.\n");
936 hw_dbg(hw, "I2C byte write error.\n");
937 } while (retry < max_retry);
943 * ixgbe_i2c_start - Sets I2C start condition
944 * @hw: pointer to hardware structure
946 * Sets I2C start condition (High -> Low on SDA while SCL is High)
948 static void ixgbe_i2c_start(struct ixgbe_hw *hw)
950 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
952 /* Start condition must begin with data and clock high */
953 ixgbe_set_i2c_data(hw, &i2cctl, 1);
954 ixgbe_raise_i2c_clk(hw, &i2cctl);
956 /* Setup time for start condition (4.7us) */
957 udelay(IXGBE_I2C_T_SU_STA);
959 ixgbe_set_i2c_data(hw, &i2cctl, 0);
961 /* Hold time for start condition (4us) */
962 udelay(IXGBE_I2C_T_HD_STA);
964 ixgbe_lower_i2c_clk(hw, &i2cctl);
966 /* Minimum low period of clock is 4.7 us */
967 udelay(IXGBE_I2C_T_LOW);
972 * ixgbe_i2c_stop - Sets I2C stop condition
973 * @hw: pointer to hardware structure
975 * Sets I2C stop condition (Low -> High on SDA while SCL is High)
977 static void ixgbe_i2c_stop(struct ixgbe_hw *hw)
979 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
981 /* Stop condition must begin with data low and clock high */
982 ixgbe_set_i2c_data(hw, &i2cctl, 0);
983 ixgbe_raise_i2c_clk(hw, &i2cctl);
985 /* Setup time for stop condition (4us) */
986 udelay(IXGBE_I2C_T_SU_STO);
988 ixgbe_set_i2c_data(hw, &i2cctl, 1);
990 /* bus free time between stop and start (4.7us)*/
991 udelay(IXGBE_I2C_T_BUF);
995 * ixgbe_clock_in_i2c_byte - Clocks in one byte via I2C
996 * @hw: pointer to hardware structure
997 * @data: data byte to clock in
999 * Clocks in one byte data via I2C data/clock
1001 static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data)
1007 for (i = 7; i >= 0; i--) {
1008 status = ixgbe_clock_in_i2c_bit(hw, &bit);
1019 * ixgbe_clock_out_i2c_byte - Clocks out one byte via I2C
1020 * @hw: pointer to hardware structure
1021 * @data: data byte clocked out
1023 * Clocks out one byte data via I2C data/clock
1025 static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data)
1032 for (i = 7; i >= 0; i--) {
1033 bit = (data >> i) & 0x1;
1034 status = ixgbe_clock_out_i2c_bit(hw, bit);
1040 /* Release SDA line (set high) */
1041 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1042 i2cctl |= IXGBE_I2C_DATA_OUT;
1043 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, i2cctl);
1049 * ixgbe_get_i2c_ack - Polls for I2C ACK
1050 * @hw: pointer to hardware structure
1052 * Clocks in/out one bit via I2C data/clock
1054 static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw)
1058 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1062 status = ixgbe_raise_i2c_clk(hw, &i2cctl);
1067 /* Minimum high period of clock is 4us */
1068 udelay(IXGBE_I2C_T_HIGH);
1070 /* Poll for ACK. Note that ACK in I2C spec is
1071 * transition from 1 to 0 */
1072 for (i = 0; i < timeout; i++) {
1073 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1074 ack = ixgbe_get_i2c_data(&i2cctl);
1082 hw_dbg(hw, "I2C ack was not received.\n");
1083 status = IXGBE_ERR_I2C;
1086 ixgbe_lower_i2c_clk(hw, &i2cctl);
1088 /* Minimum low period of clock is 4.7 us */
1089 udelay(IXGBE_I2C_T_LOW);
1096 * ixgbe_clock_in_i2c_bit - Clocks in one bit via I2C data/clock
1097 * @hw: pointer to hardware structure
1098 * @data: read data value
1100 * Clocks in one bit via I2C data/clock
1102 static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data)
1105 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1107 status = ixgbe_raise_i2c_clk(hw, &i2cctl);
1109 /* Minimum high period of clock is 4us */
1110 udelay(IXGBE_I2C_T_HIGH);
1112 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1113 *data = ixgbe_get_i2c_data(&i2cctl);
1115 ixgbe_lower_i2c_clk(hw, &i2cctl);
1117 /* Minimum low period of clock is 4.7 us */
1118 udelay(IXGBE_I2C_T_LOW);
1124 * ixgbe_clock_out_i2c_bit - Clocks in/out one bit via I2C data/clock
1125 * @hw: pointer to hardware structure
1126 * @data: data value to write
1128 * Clocks out one bit via I2C data/clock
1130 static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data)
1133 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1135 status = ixgbe_set_i2c_data(hw, &i2cctl, data);
1137 status = ixgbe_raise_i2c_clk(hw, &i2cctl);
1139 /* Minimum high period of clock is 4us */
1140 udelay(IXGBE_I2C_T_HIGH);
1142 ixgbe_lower_i2c_clk(hw, &i2cctl);
1144 /* Minimum low period of clock is 4.7 us.
1145 * This also takes care of the data hold time.
1147 udelay(IXGBE_I2C_T_LOW);
1149 status = IXGBE_ERR_I2C;
1150 hw_dbg(hw, "I2C data was not set to %X\n", data);
1156 * ixgbe_raise_i2c_clk - Raises the I2C SCL clock
1157 * @hw: pointer to hardware structure
1158 * @i2cctl: Current value of I2CCTL register
1160 * Raises the I2C clock line '0'->'1'
1162 static s32 ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
1166 *i2cctl |= IXGBE_I2C_CLK_OUT;
1168 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl);
1170 /* SCL rise time (1000ns) */
1171 udelay(IXGBE_I2C_T_RISE);
1177 * ixgbe_lower_i2c_clk - Lowers the I2C SCL clock
1178 * @hw: pointer to hardware structure
1179 * @i2cctl: Current value of I2CCTL register
1181 * Lowers the I2C clock line '1'->'0'
1183 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
1186 *i2cctl &= ~IXGBE_I2C_CLK_OUT;
1188 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl);
1190 /* SCL fall time (300ns) */
1191 udelay(IXGBE_I2C_T_FALL);
1195 * ixgbe_set_i2c_data - Sets the I2C data bit
1196 * @hw: pointer to hardware structure
1197 * @i2cctl: Current value of I2CCTL register
1198 * @data: I2C data value (0 or 1) to set
1200 * Sets the I2C data bit
1202 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data)
1207 *i2cctl |= IXGBE_I2C_DATA_OUT;
1209 *i2cctl &= ~IXGBE_I2C_DATA_OUT;
1211 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl);
1213 /* Data rise/fall (1000ns/300ns) and set-up time (250ns) */
1214 udelay(IXGBE_I2C_T_RISE + IXGBE_I2C_T_FALL + IXGBE_I2C_T_SU_DATA);
1216 /* Verify data was set correctly */
1217 *i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1218 if (data != ixgbe_get_i2c_data(i2cctl)) {
1219 status = IXGBE_ERR_I2C;
1220 hw_dbg(hw, "Error - I2C data was not set to %X.\n", data);
1227 * ixgbe_get_i2c_data - Reads the I2C SDA data bit
1228 * @hw: pointer to hardware structure
1229 * @i2cctl: Current value of I2CCTL register
1231 * Returns the I2C data bit value
1233 static bool ixgbe_get_i2c_data(u32 *i2cctl)
1237 if (*i2cctl & IXGBE_I2C_DATA_IN)
1246 * ixgbe_i2c_bus_clear - Clears the I2C bus
1247 * @hw: pointer to hardware structure
1249 * Clears the I2C bus by sending nine clock pulses.
1250 * Used when data line is stuck low.
1252 static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw)
1254 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
1257 ixgbe_set_i2c_data(hw, &i2cctl, 1);
1259 for (i = 0; i < 9; i++) {
1260 ixgbe_raise_i2c_clk(hw, &i2cctl);
1262 /* Min high period of clock is 4us */
1263 udelay(IXGBE_I2C_T_HIGH);
1265 ixgbe_lower_i2c_clk(hw, &i2cctl);
1267 /* Min low period of clock is 4.7us*/
1268 udelay(IXGBE_I2C_T_LOW);
1271 /* Put the i2c bus back to default state */
1276 * ixgbe_check_phy_link_tnx - Determine link and speed status
1277 * @hw: pointer to hardware structure
1279 * Reads the VS1 register to determine if link is up and the current speed for
1282 s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
1287 u32 max_time_out = 10;
1292 /* Initialize speed and link to default case */
1294 *speed = IXGBE_LINK_SPEED_10GB_FULL;
1297 * Check current speed and link status of the PHY register.
1298 * This is a vendor specific register and may have to
1299 * be changed for other copper PHYs.
1301 for (time_out = 0; time_out < max_time_out; time_out++) {
1303 status = hw->phy.ops.read_reg(hw,
1304 IXGBE_MDIO_VENDOR_SPECIFIC_1_STATUS,
1305 IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
1307 phy_link = phy_data &
1308 IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS;
1309 phy_speed = phy_data &
1310 IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS;
1311 if (phy_link == IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS) {
1314 IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS)
1315 *speed = IXGBE_LINK_SPEED_1GB_FULL;
1324 * ixgbe_get_phy_firmware_version_tnx - Gets the PHY Firmware Version
1325 * @hw: pointer to hardware structure
1326 * @firmware_version: pointer to the PHY Firmware Version
1328 s32 ixgbe_get_phy_firmware_version_tnx(struct ixgbe_hw *hw,
1329 u16 *firmware_version)
1333 status = hw->phy.ops.read_reg(hw, TNX_FW_REV,
1334 IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,