1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
5 #include <linux/delay.h>
6 #include <linux/iopoll.h>
7 #include <linux/sched.h>
10 #include "ixgbe_phy.h"
12 static void ixgbe_i2c_start(struct ixgbe_hw *hw);
13 static void ixgbe_i2c_stop(struct ixgbe_hw *hw);
14 static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data);
15 static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data);
16 static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw);
17 static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data);
18 static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data);
19 static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
20 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
21 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data);
22 static bool ixgbe_get_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl);
23 static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw);
24 static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id);
25 static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw);
26 static s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw);
29 * ixgbe_out_i2c_byte_ack - Send I2C byte with ack
30 * @hw: pointer to the hardware structure
33 * Returns an error code on error.
35 static s32 ixgbe_out_i2c_byte_ack(struct ixgbe_hw *hw, u8 byte)
39 status = ixgbe_clock_out_i2c_byte(hw, byte);
42 return ixgbe_get_i2c_ack(hw);
46 * ixgbe_in_i2c_byte_ack - Receive an I2C byte and send ack
47 * @hw: pointer to the hardware structure
48 * @byte: pointer to a u8 to receive the byte
50 * Returns an error code on error.
52 static s32 ixgbe_in_i2c_byte_ack(struct ixgbe_hw *hw, u8 *byte)
56 status = ixgbe_clock_in_i2c_byte(hw, byte);
60 return ixgbe_clock_out_i2c_bit(hw, false);
64 * ixgbe_ones_comp_byte_add - Perform one's complement addition
68 * Returns one's complement 8-bit sum.
70 static u8 ixgbe_ones_comp_byte_add(u8 add1, u8 add2)
72 u16 sum = add1 + add2;
74 sum = (sum & 0xFF) + (sum >> 8);
79 * ixgbe_read_i2c_combined_generic_int - Perform I2C read combined operation
80 * @hw: pointer to the hardware structure
81 * @addr: I2C bus address to read from
82 * @reg: I2C device register to read from
83 * @val: pointer to location to receive read value
84 * @lock: true if to take and release semaphore
86 * Returns an error code on error.
88 s32 ixgbe_read_i2c_combined_generic_int(struct ixgbe_hw *hw, u8 addr,
89 u16 reg, u16 *val, bool lock)
91 u32 swfw_mask = hw->phy.phy_semaphore_mask;
100 reg_high = ((reg >> 7) & 0xFE) | 1; /* Indicate read combined */
101 csum = ixgbe_ones_comp_byte_add(reg_high, reg & 0xFF);
104 if (lock && hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
105 return IXGBE_ERR_SWFW_SYNC;
107 /* Device Address and write indication */
108 if (ixgbe_out_i2c_byte_ack(hw, addr))
110 /* Write bits 14:8 */
111 if (ixgbe_out_i2c_byte_ack(hw, reg_high))
114 if (ixgbe_out_i2c_byte_ack(hw, reg & 0xFF))
117 if (ixgbe_out_i2c_byte_ack(hw, csum))
119 /* Re-start condition */
121 /* Device Address and read indication */
122 if (ixgbe_out_i2c_byte_ack(hw, addr | 1))
125 if (ixgbe_in_i2c_byte_ack(hw, &high_bits))
128 if (ixgbe_in_i2c_byte_ack(hw, &low_bits))
131 if (ixgbe_clock_in_i2c_byte(hw, &csum_byte))
134 if (ixgbe_clock_out_i2c_bit(hw, false))
138 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
139 *val = (high_bits << 8) | low_bits;
143 ixgbe_i2c_bus_clear(hw);
145 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
147 if (retry < max_retry)
148 hw_dbg(hw, "I2C byte read combined error - Retry.\n");
150 hw_dbg(hw, "I2C byte read combined error.\n");
151 } while (retry < max_retry);
153 return IXGBE_ERR_I2C;
157 * ixgbe_write_i2c_combined_generic_int - Perform I2C write combined operation
158 * @hw: pointer to the hardware structure
159 * @addr: I2C bus address to write to
160 * @reg: I2C device register to write to
161 * @val: value to write
162 * @lock: true if to take and release semaphore
164 * Returns an error code on error.
166 s32 ixgbe_write_i2c_combined_generic_int(struct ixgbe_hw *hw, u8 addr,
167 u16 reg, u16 val, bool lock)
169 u32 swfw_mask = hw->phy.phy_semaphore_mask;
175 reg_high = (reg >> 7) & 0xFE; /* Indicate write combined */
176 csum = ixgbe_ones_comp_byte_add(reg_high, reg & 0xFF);
177 csum = ixgbe_ones_comp_byte_add(csum, val >> 8);
178 csum = ixgbe_ones_comp_byte_add(csum, val & 0xFF);
181 if (lock && hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
182 return IXGBE_ERR_SWFW_SYNC;
184 /* Device Address and write indication */
185 if (ixgbe_out_i2c_byte_ack(hw, addr))
187 /* Write bits 14:8 */
188 if (ixgbe_out_i2c_byte_ack(hw, reg_high))
191 if (ixgbe_out_i2c_byte_ack(hw, reg & 0xFF))
193 /* Write data 15:8 */
194 if (ixgbe_out_i2c_byte_ack(hw, val >> 8))
197 if (ixgbe_out_i2c_byte_ack(hw, val & 0xFF))
200 if (ixgbe_out_i2c_byte_ack(hw, csum))
204 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
208 ixgbe_i2c_bus_clear(hw);
210 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
212 if (retry < max_retry)
213 hw_dbg(hw, "I2C byte write combined error - Retry.\n");
215 hw_dbg(hw, "I2C byte write combined error.\n");
216 } while (retry < max_retry);
218 return IXGBE_ERR_I2C;
222 * ixgbe_probe_phy - Probe a single address for a PHY
223 * @hw: pointer to hardware structure
224 * @phy_addr: PHY address to probe
226 * Returns true if PHY found
228 static bool ixgbe_probe_phy(struct ixgbe_hw *hw, u16 phy_addr)
232 hw->phy.mdio.prtad = phy_addr;
233 if (mdio45_probe(&hw->phy.mdio, phy_addr) != 0)
236 if (ixgbe_get_phy_id(hw))
239 hw->phy.type = ixgbe_get_phy_type_from_id(hw->phy.id);
241 if (hw->phy.type == ixgbe_phy_unknown) {
242 hw->phy.ops.read_reg(hw,
247 (MDIO_PMA_EXTABLE_10GBT |
248 MDIO_PMA_EXTABLE_1000BT))
249 hw->phy.type = ixgbe_phy_cu_unknown;
251 hw->phy.type = ixgbe_phy_generic;
258 * ixgbe_identify_phy_generic - Get physical layer module
259 * @hw: pointer to hardware structure
261 * Determines the physical layer module found on the current adapter.
263 s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw)
266 u32 status = IXGBE_ERR_PHY_ADDR_INVALID;
268 if (!hw->phy.phy_semaphore_mask) {
270 hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY1_SM;
272 hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY0_SM;
275 if (hw->phy.type != ixgbe_phy_unknown)
278 if (hw->phy.nw_mng_if_sel) {
279 phy_addr = (hw->phy.nw_mng_if_sel &
280 IXGBE_NW_MNG_IF_SEL_MDIO_PHY_ADD) >>
281 IXGBE_NW_MNG_IF_SEL_MDIO_PHY_ADD_SHIFT;
282 if (ixgbe_probe_phy(hw, phy_addr))
285 return IXGBE_ERR_PHY_ADDR_INVALID;
288 for (phy_addr = 0; phy_addr < IXGBE_MAX_PHY_ADDR; phy_addr++) {
289 if (ixgbe_probe_phy(hw, phy_addr)) {
295 /* Certain media types do not have a phy so an address will not
296 * be found and the code will take this path. Caller has to
297 * decide if it is an error or not.
300 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
306 * ixgbe_check_reset_blocked - check status of MNG FW veto bit
307 * @hw: pointer to the hardware structure
309 * This function checks the MMNGC.MNG_VETO bit to see if there are
310 * any constraints on link from manageability. For MAC's that don't
311 * have this bit just return false since the link can not be blocked
314 bool ixgbe_check_reset_blocked(struct ixgbe_hw *hw)
318 /* If we don't have this bit, it can't be blocking */
319 if (hw->mac.type == ixgbe_mac_82598EB)
322 mmngc = IXGBE_READ_REG(hw, IXGBE_MMNGC);
323 if (mmngc & IXGBE_MMNGC_MNG_VETO) {
324 hw_dbg(hw, "MNG_VETO bit detected.\n");
332 * ixgbe_get_phy_id - Get the phy type
333 * @hw: pointer to hardware structure
336 static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw)
342 status = hw->phy.ops.read_reg(hw, MDIO_DEVID1, MDIO_MMD_PMAPMD,
346 hw->phy.id = (u32)(phy_id_high << 16);
347 status = hw->phy.ops.read_reg(hw, MDIO_DEVID2, MDIO_MMD_PMAPMD,
349 hw->phy.id |= (u32)(phy_id_low & IXGBE_PHY_REVISION_MASK);
350 hw->phy.revision = (u32)(phy_id_low & ~IXGBE_PHY_REVISION_MASK);
356 * ixgbe_get_phy_type_from_id - Get the phy type
357 * @phy_id: hardware phy id
360 static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id)
362 enum ixgbe_phy_type phy_type;
366 phy_type = ixgbe_phy_tn;
371 phy_type = ixgbe_phy_aq;
374 phy_type = ixgbe_phy_qt;
377 phy_type = ixgbe_phy_nl;
381 phy_type = ixgbe_phy_x550em_ext_t;
384 phy_type = ixgbe_phy_unknown;
392 * ixgbe_reset_phy_generic - Performs a PHY reset
393 * @hw: pointer to hardware structure
395 s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw)
401 if (hw->phy.type == ixgbe_phy_unknown)
402 status = ixgbe_identify_phy_generic(hw);
404 if (status != 0 || hw->phy.type == ixgbe_phy_none)
407 /* Don't reset PHY if it's shut down due to overtemp. */
408 if (!hw->phy.reset_if_overtemp &&
409 (IXGBE_ERR_OVERTEMP == hw->phy.ops.check_overtemp(hw)))
412 /* Blocked by MNG FW so bail */
413 if (ixgbe_check_reset_blocked(hw))
417 * Perform soft PHY reset to the PHY_XS.
418 * This will cause a soft reset to the PHY
420 hw->phy.ops.write_reg(hw, MDIO_CTRL1,
425 * Poll for reset bit to self-clear indicating reset is complete.
426 * Some PHYs could take up to 3 seconds to complete and need about
427 * 1.7 usec delay after the reset is complete.
429 for (i = 0; i < 30; i++) {
431 if (hw->phy.type == ixgbe_phy_x550em_ext_t) {
432 status = hw->phy.ops.read_reg(hw,
433 IXGBE_MDIO_TX_VENDOR_ALARMS_3,
434 MDIO_MMD_PMAPMD, &ctrl);
438 if (ctrl & IXGBE_MDIO_TX_VENDOR_ALARMS_3_RST_MASK) {
443 status = hw->phy.ops.read_reg(hw, MDIO_CTRL1,
444 MDIO_MMD_PHYXS, &ctrl);
448 if (!(ctrl & MDIO_CTRL1_RESET)) {
455 if (ctrl & MDIO_CTRL1_RESET) {
456 hw_dbg(hw, "PHY reset polling failed to complete.\n");
457 return IXGBE_ERR_RESET_FAILED;
464 * ixgbe_read_phy_mdi - Reads a value from a specified PHY register without
466 * @hw: pointer to hardware structure
467 * @reg_addr: 32 bit address of PHY register to read
468 * @device_type: 5 bit device type
469 * @phy_data: Pointer to read data from PHY register
471 s32 ixgbe_read_phy_reg_mdi(struct ixgbe_hw *hw, u32 reg_addr, u32 device_type,
474 u32 i, data, command;
476 /* Setup and write the address cycle command */
477 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
478 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
479 (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) |
480 (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND));
482 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
484 /* Check every 10 usec to see if the address cycle completed.
485 * The MDI Command bit will clear when the operation is
488 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
491 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
492 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
497 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
498 hw_dbg(hw, "PHY address command did not complete.\n");
499 return IXGBE_ERR_PHY;
502 /* Address cycle complete, setup and write the read
505 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
506 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
507 (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) |
508 (IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND));
510 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
512 /* Check every 10 usec to see if the address cycle
513 * completed. The MDI Command bit will clear when the
514 * operation is complete
516 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
519 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
520 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
524 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
525 hw_dbg(hw, "PHY read command didn't complete\n");
526 return IXGBE_ERR_PHY;
529 /* Read operation is complete. Get the data
532 data = IXGBE_READ_REG(hw, IXGBE_MSRWD);
533 data >>= IXGBE_MSRWD_READ_DATA_SHIFT;
534 *phy_data = (u16)(data);
540 * ixgbe_read_phy_reg_generic - Reads a value from a specified PHY register
541 * using the SWFW lock - this function is needed in most cases
542 * @hw: pointer to hardware structure
543 * @reg_addr: 32 bit address of PHY register to read
544 * @device_type: 5 bit device type
545 * @phy_data: Pointer to read data from PHY register
547 s32 ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
548 u32 device_type, u16 *phy_data)
551 u32 gssr = hw->phy.phy_semaphore_mask;
553 if (hw->mac.ops.acquire_swfw_sync(hw, gssr) == 0) {
554 status = ixgbe_read_phy_reg_mdi(hw, reg_addr, device_type,
556 hw->mac.ops.release_swfw_sync(hw, gssr);
558 return IXGBE_ERR_SWFW_SYNC;
565 * ixgbe_write_phy_reg_mdi - Writes a value to specified PHY register
567 * @hw: pointer to hardware structure
568 * @reg_addr: 32 bit PHY register to write
569 * @device_type: 5 bit device type
570 * @phy_data: Data to write to the PHY register
572 s32 ixgbe_write_phy_reg_mdi(struct ixgbe_hw *hw, u32 reg_addr,
573 u32 device_type, u16 phy_data)
577 /* Put the data in the MDI single read and write data register*/
578 IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data);
580 /* Setup and write the address cycle command */
581 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
582 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
583 (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) |
584 (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND));
586 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
589 * Check every 10 usec to see if the address cycle completed.
590 * The MDI Command bit will clear when the operation is
593 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
596 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
597 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
601 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
602 hw_dbg(hw, "PHY address cmd didn't complete\n");
603 return IXGBE_ERR_PHY;
607 * Address cycle complete, setup and write the write
610 command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
611 (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
612 (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) |
613 (IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND));
615 IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
617 /* Check every 10 usec to see if the address cycle
618 * completed. The MDI Command bit will clear when the
619 * operation is complete
621 for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
624 command = IXGBE_READ_REG(hw, IXGBE_MSCA);
625 if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
629 if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
630 hw_dbg(hw, "PHY write cmd didn't complete\n");
631 return IXGBE_ERR_PHY;
638 * ixgbe_write_phy_reg_generic - Writes a value to specified PHY register
639 * using SWFW lock- this function is needed in most cases
640 * @hw: pointer to hardware structure
641 * @reg_addr: 32 bit PHY register to write
642 * @device_type: 5 bit device type
643 * @phy_data: Data to write to the PHY register
645 s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
646 u32 device_type, u16 phy_data)
649 u32 gssr = hw->phy.phy_semaphore_mask;
651 if (hw->mac.ops.acquire_swfw_sync(hw, gssr) == 0) {
652 status = ixgbe_write_phy_reg_mdi(hw, reg_addr, device_type,
654 hw->mac.ops.release_swfw_sync(hw, gssr);
656 return IXGBE_ERR_SWFW_SYNC;
662 #define IXGBE_HW_READ_REG(addr) IXGBE_READ_REG(hw, addr)
665 * ixgbe_msca_cmd - Write the command register and poll for completion/timeout
666 * @hw: pointer to hardware structure
667 * @cmd: command register value to write
669 static s32 ixgbe_msca_cmd(struct ixgbe_hw *hw, u32 cmd)
671 IXGBE_WRITE_REG(hw, IXGBE_MSCA, cmd);
673 return readx_poll_timeout(IXGBE_HW_READ_REG, IXGBE_MSCA, cmd,
674 !(cmd & IXGBE_MSCA_MDI_COMMAND), 10,
675 10 * IXGBE_MDIO_COMMAND_TIMEOUT);
679 * ixgbe_mii_bus_read_generic - Read a clause 22/45 register with gssr flags
680 * @hw: pointer to hardware structure
682 * @regnum: register number
683 * @gssr: semaphore flags to acquire
685 static s32 ixgbe_mii_bus_read_generic(struct ixgbe_hw *hw, int addr,
686 int regnum, u32 gssr)
691 if (hw->mac.ops.acquire_swfw_sync(hw, gssr))
694 hwaddr = addr << IXGBE_MSCA_PHY_ADDR_SHIFT;
695 if (regnum & MII_ADDR_C45) {
696 hwaddr |= regnum & GENMASK(21, 0);
697 cmd = hwaddr | IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND;
699 hwaddr |= (regnum & GENMASK(5, 0)) << IXGBE_MSCA_DEV_TYPE_SHIFT;
700 cmd = hwaddr | IXGBE_MSCA_OLD_PROTOCOL |
701 IXGBE_MSCA_READ_AUTOINC | IXGBE_MSCA_MDI_COMMAND;
704 data = ixgbe_msca_cmd(hw, cmd);
706 goto mii_bus_read_done;
708 /* For a clause 45 access the address cycle just completed, we still
709 * need to do the read command, otherwise just get the data
711 if (!(regnum & MII_ADDR_C45))
712 goto do_mii_bus_read;
714 cmd = hwaddr | IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND;
715 data = ixgbe_msca_cmd(hw, cmd);
717 goto mii_bus_read_done;
720 data = IXGBE_READ_REG(hw, IXGBE_MSRWD);
721 data = (data >> IXGBE_MSRWD_READ_DATA_SHIFT) & GENMASK(16, 0);
724 hw->mac.ops.release_swfw_sync(hw, gssr);
729 * ixgbe_mii_bus_write_generic - Write a clause 22/45 register with gssr flags
730 * @hw: pointer to hardware structure
732 * @regnum: register number
733 * @val: value to write
734 * @gssr: semaphore flags to acquire
736 static s32 ixgbe_mii_bus_write_generic(struct ixgbe_hw *hw, int addr,
737 int regnum, u16 val, u32 gssr)
742 if (hw->mac.ops.acquire_swfw_sync(hw, gssr))
745 IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)val);
747 hwaddr = addr << IXGBE_MSCA_PHY_ADDR_SHIFT;
748 if (regnum & MII_ADDR_C45) {
749 hwaddr |= regnum & GENMASK(21, 0);
750 cmd = hwaddr | IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND;
752 hwaddr |= (regnum & GENMASK(5, 0)) << IXGBE_MSCA_DEV_TYPE_SHIFT;
753 cmd = hwaddr | IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_WRITE |
754 IXGBE_MSCA_MDI_COMMAND;
757 /* For clause 45 this is an address cycle, for clause 22 this is the
760 err = ixgbe_msca_cmd(hw, cmd);
761 if (err < 0 || !(regnum & MII_ADDR_C45))
762 goto mii_bus_write_done;
764 cmd = hwaddr | IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND;
765 err = ixgbe_msca_cmd(hw, cmd);
768 hw->mac.ops.release_swfw_sync(hw, gssr);
773 * ixgbe_mii_bus_read - Read a clause 22/45 register
774 * @bus: pointer to mii_bus structure which points to our driver private
776 * @regnum: register number
778 static s32 ixgbe_mii_bus_read(struct mii_bus *bus, int addr, int regnum)
780 struct ixgbe_adapter *adapter = bus->priv;
781 struct ixgbe_hw *hw = &adapter->hw;
782 u32 gssr = hw->phy.phy_semaphore_mask;
784 return ixgbe_mii_bus_read_generic(hw, addr, regnum, gssr);
788 * ixgbe_mii_bus_write - Write a clause 22/45 register
789 * @bus: pointer to mii_bus structure which points to our driver private
791 * @regnum: register number
792 * @val: value to write
794 static s32 ixgbe_mii_bus_write(struct mii_bus *bus, int addr, int regnum,
797 struct ixgbe_adapter *adapter = bus->priv;
798 struct ixgbe_hw *hw = &adapter->hw;
799 u32 gssr = hw->phy.phy_semaphore_mask;
801 return ixgbe_mii_bus_write_generic(hw, addr, regnum, val, gssr);
805 * ixgbe_x550em_a_mii_bus_read - Read a clause 22/45 register on x550em_a
806 * @bus: pointer to mii_bus structure which points to our driver private
808 * @regnum: register number
810 static s32 ixgbe_x550em_a_mii_bus_read(struct mii_bus *bus, int addr,
813 struct ixgbe_adapter *adapter = bus->priv;
814 struct ixgbe_hw *hw = &adapter->hw;
815 u32 gssr = hw->phy.phy_semaphore_mask;
817 gssr |= IXGBE_GSSR_TOKEN_SM | IXGBE_GSSR_PHY0_SM;
818 return ixgbe_mii_bus_read_generic(hw, addr, regnum, gssr);
822 * ixgbe_x550em_a_mii_bus_write - Write a clause 22/45 register on x550em_a
823 * @bus: pointer to mii_bus structure which points to our driver private
825 * @regnum: register number
826 * @val: value to write
828 static s32 ixgbe_x550em_a_mii_bus_write(struct mii_bus *bus, int addr,
831 struct ixgbe_adapter *adapter = bus->priv;
832 struct ixgbe_hw *hw = &adapter->hw;
833 u32 gssr = hw->phy.phy_semaphore_mask;
835 gssr |= IXGBE_GSSR_TOKEN_SM | IXGBE_GSSR_PHY0_SM;
836 return ixgbe_mii_bus_write_generic(hw, addr, regnum, val, gssr);
840 * ixgbe_get_first_secondary_devfn - get first device downstream of root port
841 * @devfn: PCI_DEVFN of root port on domain 0, bus 0
843 * Returns pci_dev pointer to PCI_DEVFN(0, 0) on subordinate side of root
844 * on domain 0, bus 0, devfn = 'devfn'
846 static struct pci_dev *ixgbe_get_first_secondary_devfn(unsigned int devfn)
848 struct pci_dev *rp_pdev;
851 rp_pdev = pci_get_domain_bus_and_slot(0, 0, devfn);
852 if (rp_pdev && rp_pdev->subordinate) {
853 bus = rp_pdev->subordinate->number;
854 return pci_get_domain_bus_and_slot(0, bus, 0);
861 * ixgbe_x550em_a_has_mii - is this the first ixgbe x550em_a PCI function?
862 * @hw: pointer to hardware structure
864 * Returns true if hw points to lowest numbered PCI B:D.F x550_em_a device in
865 * the SoC. There are up to 4 MACs sharing a single MDIO bus on the x550em_a,
866 * but we only want to register one MDIO bus.
868 static bool ixgbe_x550em_a_has_mii(struct ixgbe_hw *hw)
870 struct ixgbe_adapter *adapter = hw->back;
871 struct pci_dev *pdev = adapter->pdev;
872 struct pci_dev *func0_pdev;
874 /* For the C3000 family of SoCs (x550em_a) the internal ixgbe devices
875 * are always downstream of root ports @ 0000:00:16.0 & 0000:00:17.0
876 * It's not valid for function 0 to be disabled and function 1 is up,
877 * so the lowest numbered ixgbe dev will be device 0 function 0 on one
878 * of those two root ports
880 func0_pdev = ixgbe_get_first_secondary_devfn(PCI_DEVFN(0x16, 0));
882 if (func0_pdev == pdev)
887 func0_pdev = ixgbe_get_first_secondary_devfn(PCI_DEVFN(0x17, 0));
888 if (func0_pdev == pdev)
895 * ixgbe_mii_bus_init - mii_bus structure setup
896 * @hw: pointer to hardware structure
898 * Returns 0 on success, negative on failure
900 * ixgbe_mii_bus_init initializes a mii_bus structure in adapter
902 s32 ixgbe_mii_bus_init(struct ixgbe_hw *hw)
904 struct ixgbe_adapter *adapter = hw->back;
905 struct pci_dev *pdev = adapter->pdev;
906 struct device *dev = &adapter->netdev->dev;
909 bus = devm_mdiobus_alloc(dev);
913 switch (hw->device_id) {
915 case IXGBE_DEV_ID_X550EM_A_KR:
916 case IXGBE_DEV_ID_X550EM_A_KR_L:
917 case IXGBE_DEV_ID_X550EM_A_SFP_N:
918 case IXGBE_DEV_ID_X550EM_A_SGMII:
919 case IXGBE_DEV_ID_X550EM_A_SGMII_L:
920 case IXGBE_DEV_ID_X550EM_A_10G_T:
921 case IXGBE_DEV_ID_X550EM_A_SFP:
922 case IXGBE_DEV_ID_X550EM_A_1G_T:
923 case IXGBE_DEV_ID_X550EM_A_1G_T_L:
924 if (!ixgbe_x550em_a_has_mii(hw))
926 bus->read = &ixgbe_x550em_a_mii_bus_read;
927 bus->write = &ixgbe_x550em_a_mii_bus_write;
930 bus->read = &ixgbe_mii_bus_read;
931 bus->write = &ixgbe_mii_bus_write;
935 /* Use the position of the device in the PCI hierarchy as the id */
936 snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mdio-%s", ixgbe_driver_name,
939 bus->name = "ixgbe-mdio";
942 bus->phy_mask = GENMASK(31, 0);
944 /* Support clause 22/45 natively. ixgbe_probe() sets MDIO_EMULATE_C22
945 * unfortunately that causes some clause 22 frames to be sent with
946 * clause 45 addressing. We don't want that.
948 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22;
950 adapter->mii_bus = bus;
951 return mdiobus_register(bus);
955 * ixgbe_setup_phy_link_generic - Set and restart autoneg
956 * @hw: pointer to hardware structure
958 * Restart autonegotiation and PHY and waits for completion.
960 s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
963 u16 autoneg_reg = IXGBE_MII_AUTONEG_REG;
964 bool autoneg = false;
965 ixgbe_link_speed speed;
967 ixgbe_get_copper_link_capabilities_generic(hw, &speed, &autoneg);
969 /* Set or unset auto-negotiation 10G advertisement */
970 hw->phy.ops.read_reg(hw, MDIO_AN_10GBT_CTRL, MDIO_MMD_AN, &autoneg_reg);
972 autoneg_reg &= ~MDIO_AN_10GBT_CTRL_ADV10G;
973 if ((hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_10GB_FULL) &&
974 (speed & IXGBE_LINK_SPEED_10GB_FULL))
975 autoneg_reg |= MDIO_AN_10GBT_CTRL_ADV10G;
977 hw->phy.ops.write_reg(hw, MDIO_AN_10GBT_CTRL, MDIO_MMD_AN, autoneg_reg);
979 hw->phy.ops.read_reg(hw, IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
980 MDIO_MMD_AN, &autoneg_reg);
982 if (hw->mac.type == ixgbe_mac_X550) {
983 /* Set or unset auto-negotiation 5G advertisement */
984 autoneg_reg &= ~IXGBE_MII_5GBASE_T_ADVERTISE;
985 if ((hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_5GB_FULL) &&
986 (speed & IXGBE_LINK_SPEED_5GB_FULL))
987 autoneg_reg |= IXGBE_MII_5GBASE_T_ADVERTISE;
989 /* Set or unset auto-negotiation 2.5G advertisement */
990 autoneg_reg &= ~IXGBE_MII_2_5GBASE_T_ADVERTISE;
991 if ((hw->phy.autoneg_advertised &
992 IXGBE_LINK_SPEED_2_5GB_FULL) &&
993 (speed & IXGBE_LINK_SPEED_2_5GB_FULL))
994 autoneg_reg |= IXGBE_MII_2_5GBASE_T_ADVERTISE;
997 /* Set or unset auto-negotiation 1G advertisement */
998 autoneg_reg &= ~IXGBE_MII_1GBASE_T_ADVERTISE;
999 if ((hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_1GB_FULL) &&
1000 (speed & IXGBE_LINK_SPEED_1GB_FULL))
1001 autoneg_reg |= IXGBE_MII_1GBASE_T_ADVERTISE;
1003 hw->phy.ops.write_reg(hw, IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
1004 MDIO_MMD_AN, autoneg_reg);
1006 /* Set or unset auto-negotiation 100M advertisement */
1007 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, MDIO_MMD_AN, &autoneg_reg);
1009 autoneg_reg &= ~(ADVERTISE_100FULL | ADVERTISE_100HALF);
1010 if ((hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_100_FULL) &&
1011 (speed & IXGBE_LINK_SPEED_100_FULL))
1012 autoneg_reg |= ADVERTISE_100FULL;
1014 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, MDIO_MMD_AN, autoneg_reg);
1016 /* Blocked by MNG FW so don't reset PHY */
1017 if (ixgbe_check_reset_blocked(hw))
1020 /* Restart PHY autonegotiation and wait for completion */
1021 hw->phy.ops.read_reg(hw, MDIO_CTRL1,
1022 MDIO_MMD_AN, &autoneg_reg);
1024 autoneg_reg |= MDIO_AN_CTRL1_RESTART;
1026 hw->phy.ops.write_reg(hw, MDIO_CTRL1,
1027 MDIO_MMD_AN, autoneg_reg);
1033 * ixgbe_setup_phy_link_speed_generic - Sets the auto advertised capabilities
1034 * @hw: pointer to hardware structure
1035 * @speed: new link speed
1036 * @autoneg_wait_to_complete: unused
1038 s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw,
1039 ixgbe_link_speed speed,
1040 bool autoneg_wait_to_complete)
1042 /* Clear autoneg_advertised and set new values based on input link
1045 hw->phy.autoneg_advertised = 0;
1047 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
1048 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
1050 if (speed & IXGBE_LINK_SPEED_5GB_FULL)
1051 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_5GB_FULL;
1053 if (speed & IXGBE_LINK_SPEED_2_5GB_FULL)
1054 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_2_5GB_FULL;
1056 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
1057 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
1059 if (speed & IXGBE_LINK_SPEED_100_FULL)
1060 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_100_FULL;
1062 if (speed & IXGBE_LINK_SPEED_10_FULL)
1063 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10_FULL;
1065 /* Setup link based on the new speed settings */
1066 if (hw->phy.ops.setup_link)
1067 hw->phy.ops.setup_link(hw);
1073 * ixgbe_get_copper_speeds_supported - Get copper link speed from phy
1074 * @hw: pointer to hardware structure
1076 * Determines the supported link capabilities by reading the PHY auto
1077 * negotiation register.
1079 static s32 ixgbe_get_copper_speeds_supported(struct ixgbe_hw *hw)
1084 status = hw->phy.ops.read_reg(hw, MDIO_SPEED, MDIO_MMD_PMAPMD,
1089 if (speed_ability & MDIO_SPEED_10G)
1090 hw->phy.speeds_supported |= IXGBE_LINK_SPEED_10GB_FULL;
1091 if (speed_ability & MDIO_PMA_SPEED_1000)
1092 hw->phy.speeds_supported |= IXGBE_LINK_SPEED_1GB_FULL;
1093 if (speed_ability & MDIO_PMA_SPEED_100)
1094 hw->phy.speeds_supported |= IXGBE_LINK_SPEED_100_FULL;
1096 switch (hw->mac.type) {
1097 case ixgbe_mac_X550:
1098 hw->phy.speeds_supported |= IXGBE_LINK_SPEED_2_5GB_FULL;
1099 hw->phy.speeds_supported |= IXGBE_LINK_SPEED_5GB_FULL;
1101 case ixgbe_mac_X550EM_x:
1102 case ixgbe_mac_x550em_a:
1103 hw->phy.speeds_supported &= ~IXGBE_LINK_SPEED_100_FULL;
1113 * ixgbe_get_copper_link_capabilities_generic - Determines link capabilities
1114 * @hw: pointer to hardware structure
1115 * @speed: pointer to link speed
1116 * @autoneg: boolean auto-negotiation value
1118 s32 ixgbe_get_copper_link_capabilities_generic(struct ixgbe_hw *hw,
1119 ixgbe_link_speed *speed,
1125 if (!hw->phy.speeds_supported)
1126 status = ixgbe_get_copper_speeds_supported(hw);
1128 *speed = hw->phy.speeds_supported;
1133 * ixgbe_check_phy_link_tnx - Determine link and speed status
1134 * @hw: pointer to hardware structure
1135 * @speed: link speed
1136 * @link_up: status of link
1138 * Reads the VS1 register to determine if link is up and the current speed for
1141 s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
1146 u32 max_time_out = 10;
1151 /* Initialize speed and link to default case */
1153 *speed = IXGBE_LINK_SPEED_10GB_FULL;
1156 * Check current speed and link status of the PHY register.
1157 * This is a vendor specific register and may have to
1158 * be changed for other copper PHYs.
1160 for (time_out = 0; time_out < max_time_out; time_out++) {
1162 status = hw->phy.ops.read_reg(hw,
1166 phy_link = phy_data &
1167 IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS;
1168 phy_speed = phy_data &
1169 IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS;
1170 if (phy_link == IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS) {
1173 IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS)
1174 *speed = IXGBE_LINK_SPEED_1GB_FULL;
1183 * ixgbe_setup_phy_link_tnx - Set and restart autoneg
1184 * @hw: pointer to hardware structure
1186 * Restart autonegotiation and PHY and waits for completion.
1187 * This function always returns success, this is nessary since
1188 * it is called via a function pointer that could call other
1189 * functions that could return an error.
1191 s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw)
1193 u16 autoneg_reg = IXGBE_MII_AUTONEG_REG;
1194 bool autoneg = false;
1195 ixgbe_link_speed speed;
1197 ixgbe_get_copper_link_capabilities_generic(hw, &speed, &autoneg);
1199 if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
1200 /* Set or unset auto-negotiation 10G advertisement */
1201 hw->phy.ops.read_reg(hw, MDIO_AN_10GBT_CTRL,
1205 autoneg_reg &= ~MDIO_AN_10GBT_CTRL_ADV10G;
1206 if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_10GB_FULL)
1207 autoneg_reg |= MDIO_AN_10GBT_CTRL_ADV10G;
1209 hw->phy.ops.write_reg(hw, MDIO_AN_10GBT_CTRL,
1214 if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
1215 /* Set or unset auto-negotiation 1G advertisement */
1216 hw->phy.ops.read_reg(hw, IXGBE_MII_AUTONEG_XNP_TX_REG,
1220 autoneg_reg &= ~IXGBE_MII_1GBASE_T_ADVERTISE_XNP_TX;
1221 if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_1GB_FULL)
1222 autoneg_reg |= IXGBE_MII_1GBASE_T_ADVERTISE_XNP_TX;
1224 hw->phy.ops.write_reg(hw, IXGBE_MII_AUTONEG_XNP_TX_REG,
1229 if (speed & IXGBE_LINK_SPEED_100_FULL) {
1230 /* Set or unset auto-negotiation 100M advertisement */
1231 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
1235 autoneg_reg &= ~(ADVERTISE_100FULL |
1237 if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_100_FULL)
1238 autoneg_reg |= ADVERTISE_100FULL;
1240 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
1245 /* Blocked by MNG FW so don't reset PHY */
1246 if (ixgbe_check_reset_blocked(hw))
1249 /* Restart PHY autonegotiation and wait for completion */
1250 hw->phy.ops.read_reg(hw, MDIO_CTRL1,
1251 MDIO_MMD_AN, &autoneg_reg);
1253 autoneg_reg |= MDIO_AN_CTRL1_RESTART;
1255 hw->phy.ops.write_reg(hw, MDIO_CTRL1,
1256 MDIO_MMD_AN, autoneg_reg);
1261 * ixgbe_reset_phy_nl - Performs a PHY reset
1262 * @hw: pointer to hardware structure
1264 s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw)
1266 u16 phy_offset, control, eword, edata, block_crc;
1267 bool end_data = false;
1268 u16 list_offset, data_offset;
1273 /* Blocked by MNG FW so bail */
1274 if (ixgbe_check_reset_blocked(hw))
1277 hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, &phy_data);
1279 /* reset the PHY and poll for completion */
1280 hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS,
1281 (phy_data | MDIO_CTRL1_RESET));
1283 for (i = 0; i < 100; i++) {
1284 hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS,
1286 if ((phy_data & MDIO_CTRL1_RESET) == 0)
1288 usleep_range(10000, 20000);
1291 if ((phy_data & MDIO_CTRL1_RESET) != 0) {
1292 hw_dbg(hw, "PHY reset did not complete.\n");
1293 return IXGBE_ERR_PHY;
1296 /* Get init offsets */
1297 ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset,
1302 ret_val = hw->eeprom.ops.read(hw, data_offset, &block_crc);
1306 * Read control word from PHY init contents offset
1308 ret_val = hw->eeprom.ops.read(hw, data_offset, &eword);
1311 control = (eword & IXGBE_CONTROL_MASK_NL) >>
1312 IXGBE_CONTROL_SHIFT_NL;
1313 edata = eword & IXGBE_DATA_MASK_NL;
1315 case IXGBE_DELAY_NL:
1317 hw_dbg(hw, "DELAY: %d MS\n", edata);
1318 usleep_range(edata * 1000, edata * 2000);
1321 hw_dbg(hw, "DATA:\n");
1323 ret_val = hw->eeprom.ops.read(hw, data_offset++,
1327 for (i = 0; i < edata; i++) {
1328 ret_val = hw->eeprom.ops.read(hw, data_offset,
1332 hw->phy.ops.write_reg(hw, phy_offset,
1333 MDIO_MMD_PMAPMD, eword);
1334 hw_dbg(hw, "Wrote %4.4x to %4.4x\n", eword,
1340 case IXGBE_CONTROL_NL:
1342 hw_dbg(hw, "CONTROL:\n");
1343 if (edata == IXGBE_CONTROL_EOL_NL) {
1344 hw_dbg(hw, "EOL\n");
1346 } else if (edata == IXGBE_CONTROL_SOL_NL) {
1347 hw_dbg(hw, "SOL\n");
1349 hw_dbg(hw, "Bad control value\n");
1350 return IXGBE_ERR_PHY;
1354 hw_dbg(hw, "Bad control type\n");
1355 return IXGBE_ERR_PHY;
1362 hw_err(hw, "eeprom read at offset %d failed\n", data_offset);
1363 return IXGBE_ERR_PHY;
1367 * ixgbe_identify_module_generic - Identifies module type
1368 * @hw: pointer to hardware structure
1370 * Determines HW type and calls appropriate function.
1372 s32 ixgbe_identify_module_generic(struct ixgbe_hw *hw)
1374 switch (hw->mac.ops.get_media_type(hw)) {
1375 case ixgbe_media_type_fiber:
1376 return ixgbe_identify_sfp_module_generic(hw);
1377 case ixgbe_media_type_fiber_qsfp:
1378 return ixgbe_identify_qsfp_module_generic(hw);
1380 hw->phy.sfp_type = ixgbe_sfp_type_not_present;
1381 return IXGBE_ERR_SFP_NOT_PRESENT;
1384 return IXGBE_ERR_SFP_NOT_PRESENT;
1388 * ixgbe_identify_sfp_module_generic - Identifies SFP modules
1389 * @hw: pointer to hardware structure
1391 * Searches for and identifies the SFP module and assigns appropriate PHY type.
1393 s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
1395 struct ixgbe_adapter *adapter = hw->back;
1398 enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
1400 u8 comp_codes_1g = 0;
1401 u8 comp_codes_10g = 0;
1402 u8 oui_bytes[3] = {0, 0, 0};
1405 u16 enforce_sfp = 0;
1407 if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber) {
1408 hw->phy.sfp_type = ixgbe_sfp_type_not_present;
1409 return IXGBE_ERR_SFP_NOT_PRESENT;
1412 /* LAN ID is needed for sfp_type determination */
1413 hw->mac.ops.set_lan_id(hw);
1415 status = hw->phy.ops.read_i2c_eeprom(hw,
1416 IXGBE_SFF_IDENTIFIER,
1420 goto err_read_i2c_eeprom;
1422 if (identifier != IXGBE_SFF_IDENTIFIER_SFP) {
1423 hw->phy.type = ixgbe_phy_sfp_unsupported;
1424 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1426 status = hw->phy.ops.read_i2c_eeprom(hw,
1427 IXGBE_SFF_1GBE_COMP_CODES,
1431 goto err_read_i2c_eeprom;
1433 status = hw->phy.ops.read_i2c_eeprom(hw,
1434 IXGBE_SFF_10GBE_COMP_CODES,
1438 goto err_read_i2c_eeprom;
1439 status = hw->phy.ops.read_i2c_eeprom(hw,
1440 IXGBE_SFF_CABLE_TECHNOLOGY,
1444 goto err_read_i2c_eeprom;
1451 * 3 SFP_DA_CORE0 - 82599-specific
1452 * 4 SFP_DA_CORE1 - 82599-specific
1453 * 5 SFP_SR/LR_CORE0 - 82599-specific
1454 * 6 SFP_SR/LR_CORE1 - 82599-specific
1455 * 7 SFP_act_lmt_DA_CORE0 - 82599-specific
1456 * 8 SFP_act_lmt_DA_CORE1 - 82599-specific
1457 * 9 SFP_1g_cu_CORE0 - 82599-specific
1458 * 10 SFP_1g_cu_CORE1 - 82599-specific
1459 * 11 SFP_1g_sx_CORE0 - 82599-specific
1460 * 12 SFP_1g_sx_CORE1 - 82599-specific
1462 if (hw->mac.type == ixgbe_mac_82598EB) {
1463 if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
1464 hw->phy.sfp_type = ixgbe_sfp_type_da_cu;
1465 else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
1466 hw->phy.sfp_type = ixgbe_sfp_type_sr;
1467 else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
1468 hw->phy.sfp_type = ixgbe_sfp_type_lr;
1470 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
1472 if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) {
1473 if (hw->bus.lan_id == 0)
1475 ixgbe_sfp_type_da_cu_core0;
1478 ixgbe_sfp_type_da_cu_core1;
1479 } else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) {
1480 hw->phy.ops.read_i2c_eeprom(
1481 hw, IXGBE_SFF_CABLE_SPEC_COMP,
1484 IXGBE_SFF_DA_SPEC_ACTIVE_LIMITING) {
1485 if (hw->bus.lan_id == 0)
1487 ixgbe_sfp_type_da_act_lmt_core0;
1490 ixgbe_sfp_type_da_act_lmt_core1;
1493 ixgbe_sfp_type_unknown;
1495 } else if (comp_codes_10g &
1496 (IXGBE_SFF_10GBASESR_CAPABLE |
1497 IXGBE_SFF_10GBASELR_CAPABLE)) {
1498 if (hw->bus.lan_id == 0)
1500 ixgbe_sfp_type_srlr_core0;
1503 ixgbe_sfp_type_srlr_core1;
1504 } else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE) {
1505 if (hw->bus.lan_id == 0)
1507 ixgbe_sfp_type_1g_cu_core0;
1510 ixgbe_sfp_type_1g_cu_core1;
1511 } else if (comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) {
1512 if (hw->bus.lan_id == 0)
1514 ixgbe_sfp_type_1g_sx_core0;
1517 ixgbe_sfp_type_1g_sx_core1;
1518 } else if (comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) {
1519 if (hw->bus.lan_id == 0)
1521 ixgbe_sfp_type_1g_lx_core0;
1524 ixgbe_sfp_type_1g_lx_core1;
1526 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
1530 if (hw->phy.sfp_type != stored_sfp_type)
1531 hw->phy.sfp_setup_needed = true;
1533 /* Determine if the SFP+ PHY is dual speed or not. */
1534 hw->phy.multispeed_fiber = false;
1535 if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) &&
1536 (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) ||
1537 ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) &&
1538 (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)))
1539 hw->phy.multispeed_fiber = true;
1541 /* Determine PHY vendor */
1542 if (hw->phy.type != ixgbe_phy_nl) {
1543 hw->phy.id = identifier;
1544 status = hw->phy.ops.read_i2c_eeprom(hw,
1545 IXGBE_SFF_VENDOR_OUI_BYTE0,
1549 goto err_read_i2c_eeprom;
1551 status = hw->phy.ops.read_i2c_eeprom(hw,
1552 IXGBE_SFF_VENDOR_OUI_BYTE1,
1556 goto err_read_i2c_eeprom;
1558 status = hw->phy.ops.read_i2c_eeprom(hw,
1559 IXGBE_SFF_VENDOR_OUI_BYTE2,
1563 goto err_read_i2c_eeprom;
1566 ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) |
1567 (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) |
1568 (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT));
1570 switch (vendor_oui) {
1571 case IXGBE_SFF_VENDOR_OUI_TYCO:
1572 if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
1574 ixgbe_phy_sfp_passive_tyco;
1576 case IXGBE_SFF_VENDOR_OUI_FTL:
1577 if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE)
1578 hw->phy.type = ixgbe_phy_sfp_ftl_active;
1580 hw->phy.type = ixgbe_phy_sfp_ftl;
1582 case IXGBE_SFF_VENDOR_OUI_AVAGO:
1583 hw->phy.type = ixgbe_phy_sfp_avago;
1585 case IXGBE_SFF_VENDOR_OUI_INTEL:
1586 hw->phy.type = ixgbe_phy_sfp_intel;
1589 if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE)
1591 ixgbe_phy_sfp_passive_unknown;
1592 else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE)
1594 ixgbe_phy_sfp_active_unknown;
1596 hw->phy.type = ixgbe_phy_sfp_unknown;
1601 /* Allow any DA cable vendor */
1602 if (cable_tech & (IXGBE_SFF_DA_PASSIVE_CABLE |
1603 IXGBE_SFF_DA_ACTIVE_CABLE))
1606 /* Verify supported 1G SFP modules */
1607 if (comp_codes_10g == 0 &&
1608 !(hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
1609 hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
1610 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
1611 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
1612 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
1613 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1)) {
1614 hw->phy.type = ixgbe_phy_sfp_unsupported;
1615 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1618 /* Anything else 82598-based is supported */
1619 if (hw->mac.type == ixgbe_mac_82598EB)
1622 hw->mac.ops.get_device_caps(hw, &enforce_sfp);
1623 if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP) &&
1624 !(hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
1625 hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
1626 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
1627 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
1628 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
1629 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1)) {
1630 /* Make sure we're a supported PHY type */
1631 if (hw->phy.type == ixgbe_phy_sfp_intel)
1633 if (hw->allow_unsupported_sfp) {
1634 e_warn(drv, "WARNING: Intel (R) Network Connections are quality tested using Intel (R) Ethernet Optics. Using untested modules is not supported and may cause unstable operation or damage to the module or the adapter. Intel Corporation is not responsible for any harm caused by using untested modules.\n");
1637 hw_dbg(hw, "SFP+ module not supported\n");
1638 hw->phy.type = ixgbe_phy_sfp_unsupported;
1639 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1643 err_read_i2c_eeprom:
1644 hw->phy.sfp_type = ixgbe_sfp_type_not_present;
1645 if (hw->phy.type != ixgbe_phy_nl) {
1647 hw->phy.type = ixgbe_phy_unknown;
1649 return IXGBE_ERR_SFP_NOT_PRESENT;
1653 * ixgbe_identify_qsfp_module_generic - Identifies QSFP modules
1654 * @hw: pointer to hardware structure
1656 * Searches for and identifies the QSFP module and assigns appropriate PHY type
1658 static s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
1660 struct ixgbe_adapter *adapter = hw->back;
1663 enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
1665 u8 comp_codes_1g = 0;
1666 u8 comp_codes_10g = 0;
1667 u8 oui_bytes[3] = {0, 0, 0};
1668 u16 enforce_sfp = 0;
1670 u8 cable_length = 0;
1672 bool active_cable = false;
1674 if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber_qsfp) {
1675 hw->phy.sfp_type = ixgbe_sfp_type_not_present;
1676 return IXGBE_ERR_SFP_NOT_PRESENT;
1679 /* LAN ID is needed for sfp_type determination */
1680 hw->mac.ops.set_lan_id(hw);
1682 status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER,
1686 goto err_read_i2c_eeprom;
1688 if (identifier != IXGBE_SFF_IDENTIFIER_QSFP_PLUS) {
1689 hw->phy.type = ixgbe_phy_sfp_unsupported;
1690 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1693 hw->phy.id = identifier;
1695 status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_QSFP_10GBE_COMP,
1699 goto err_read_i2c_eeprom;
1701 status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_QSFP_1GBE_COMP,
1705 goto err_read_i2c_eeprom;
1707 if (comp_codes_10g & IXGBE_SFF_QSFP_DA_PASSIVE_CABLE) {
1708 hw->phy.type = ixgbe_phy_qsfp_passive_unknown;
1709 if (hw->bus.lan_id == 0)
1710 hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core0;
1712 hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core1;
1713 } else if (comp_codes_10g & (IXGBE_SFF_10GBASESR_CAPABLE |
1714 IXGBE_SFF_10GBASELR_CAPABLE)) {
1715 if (hw->bus.lan_id == 0)
1716 hw->phy.sfp_type = ixgbe_sfp_type_srlr_core0;
1718 hw->phy.sfp_type = ixgbe_sfp_type_srlr_core1;
1720 if (comp_codes_10g & IXGBE_SFF_QSFP_DA_ACTIVE_CABLE)
1721 active_cable = true;
1723 if (!active_cable) {
1724 /* check for active DA cables that pre-date
1727 hw->phy.ops.read_i2c_eeprom(hw,
1728 IXGBE_SFF_QSFP_CONNECTOR,
1731 hw->phy.ops.read_i2c_eeprom(hw,
1732 IXGBE_SFF_QSFP_CABLE_LENGTH,
1735 hw->phy.ops.read_i2c_eeprom(hw,
1736 IXGBE_SFF_QSFP_DEVICE_TECH,
1740 IXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE) &&
1741 (cable_length > 0) &&
1742 ((device_tech >> 4) ==
1743 IXGBE_SFF_QSFP_TRANSMITER_850NM_VCSEL))
1744 active_cable = true;
1748 hw->phy.type = ixgbe_phy_qsfp_active_unknown;
1749 if (hw->bus.lan_id == 0)
1751 ixgbe_sfp_type_da_act_lmt_core0;
1754 ixgbe_sfp_type_da_act_lmt_core1;
1756 /* unsupported module type */
1757 hw->phy.type = ixgbe_phy_sfp_unsupported;
1758 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1762 if (hw->phy.sfp_type != stored_sfp_type)
1763 hw->phy.sfp_setup_needed = true;
1765 /* Determine if the QSFP+ PHY is dual speed or not. */
1766 hw->phy.multispeed_fiber = false;
1767 if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) &&
1768 (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) ||
1769 ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) &&
1770 (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)))
1771 hw->phy.multispeed_fiber = true;
1773 /* Determine PHY vendor for optical modules */
1774 if (comp_codes_10g & (IXGBE_SFF_10GBASESR_CAPABLE |
1775 IXGBE_SFF_10GBASELR_CAPABLE)) {
1776 status = hw->phy.ops.read_i2c_eeprom(hw,
1777 IXGBE_SFF_QSFP_VENDOR_OUI_BYTE0,
1781 goto err_read_i2c_eeprom;
1783 status = hw->phy.ops.read_i2c_eeprom(hw,
1784 IXGBE_SFF_QSFP_VENDOR_OUI_BYTE1,
1788 goto err_read_i2c_eeprom;
1790 status = hw->phy.ops.read_i2c_eeprom(hw,
1791 IXGBE_SFF_QSFP_VENDOR_OUI_BYTE2,
1795 goto err_read_i2c_eeprom;
1798 ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) |
1799 (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) |
1800 (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT));
1802 if (vendor_oui == IXGBE_SFF_VENDOR_OUI_INTEL)
1803 hw->phy.type = ixgbe_phy_qsfp_intel;
1805 hw->phy.type = ixgbe_phy_qsfp_unknown;
1807 hw->mac.ops.get_device_caps(hw, &enforce_sfp);
1808 if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP)) {
1809 /* Make sure we're a supported PHY type */
1810 if (hw->phy.type == ixgbe_phy_qsfp_intel)
1812 if (hw->allow_unsupported_sfp) {
1813 e_warn(drv, "WARNING: Intel (R) Network Connections are quality tested using Intel (R) Ethernet Optics. Using untested modules is not supported and may cause unstable operation or damage to the module or the adapter. Intel Corporation is not responsible for any harm caused by using untested modules.\n");
1816 hw_dbg(hw, "QSFP module not supported\n");
1817 hw->phy.type = ixgbe_phy_sfp_unsupported;
1818 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1824 err_read_i2c_eeprom:
1825 hw->phy.sfp_type = ixgbe_sfp_type_not_present;
1827 hw->phy.type = ixgbe_phy_unknown;
1829 return IXGBE_ERR_SFP_NOT_PRESENT;
1833 * ixgbe_get_sfp_init_sequence_offsets - Provides offset of PHY init sequence
1834 * @hw: pointer to hardware structure
1835 * @list_offset: offset to the SFP ID list
1836 * @data_offset: offset to the SFP data block
1838 * Checks the MAC's EEPROM to see if it supports a given SFP+ module type, if
1839 * so it returns the offsets to the phy init sequence block.
1841 s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
1846 u16 sfp_type = hw->phy.sfp_type;
1848 if (hw->phy.sfp_type == ixgbe_sfp_type_unknown)
1849 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1851 if (hw->phy.sfp_type == ixgbe_sfp_type_not_present)
1852 return IXGBE_ERR_SFP_NOT_PRESENT;
1854 if ((hw->device_id == IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM) &&
1855 (hw->phy.sfp_type == ixgbe_sfp_type_da_cu))
1856 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1859 * Limiting active cables and 1G Phys must be initialized as
1862 if (sfp_type == ixgbe_sfp_type_da_act_lmt_core0 ||
1863 sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
1864 sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
1865 sfp_type == ixgbe_sfp_type_1g_sx_core0)
1866 sfp_type = ixgbe_sfp_type_srlr_core0;
1867 else if (sfp_type == ixgbe_sfp_type_da_act_lmt_core1 ||
1868 sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
1869 sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
1870 sfp_type == ixgbe_sfp_type_1g_sx_core1)
1871 sfp_type = ixgbe_sfp_type_srlr_core1;
1873 /* Read offset to PHY init contents */
1874 if (hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset)) {
1875 hw_err(hw, "eeprom read at %d failed\n",
1876 IXGBE_PHY_INIT_OFFSET_NL);
1877 return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT;
1880 if ((!*list_offset) || (*list_offset == 0xFFFF))
1881 return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT;
1883 /* Shift offset to first ID word */
1887 * Find the matching SFP ID in the EEPROM
1888 * and program the init sequence
1890 if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id))
1893 while (sfp_id != IXGBE_PHY_INIT_END_NL) {
1894 if (sfp_id == sfp_type) {
1896 if (hw->eeprom.ops.read(hw, *list_offset, data_offset))
1898 if ((!*data_offset) || (*data_offset == 0xFFFF)) {
1899 hw_dbg(hw, "SFP+ module not supported\n");
1900 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1905 (*list_offset) += 2;
1906 if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id))
1911 if (sfp_id == IXGBE_PHY_INIT_END_NL) {
1912 hw_dbg(hw, "No matching SFP+ module found\n");
1913 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1919 hw_err(hw, "eeprom read at offset %d failed\n", *list_offset);
1920 return IXGBE_ERR_PHY;
1924 * ixgbe_read_i2c_eeprom_generic - Reads 8 bit EEPROM word over I2C interface
1925 * @hw: pointer to hardware structure
1926 * @byte_offset: EEPROM byte offset to read
1927 * @eeprom_data: value read
1929 * Performs byte read operation to SFP module's EEPROM over I2C interface.
1931 s32 ixgbe_read_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
1934 return hw->phy.ops.read_i2c_byte(hw, byte_offset,
1935 IXGBE_I2C_EEPROM_DEV_ADDR,
1940 * ixgbe_read_i2c_sff8472_generic - Reads 8 bit word over I2C interface
1941 * @hw: pointer to hardware structure
1942 * @byte_offset: byte offset at address 0xA2
1943 * @sff8472_data: value read
1945 * Performs byte read operation to SFP module's SFF-8472 data over I2C
1947 s32 ixgbe_read_i2c_sff8472_generic(struct ixgbe_hw *hw, u8 byte_offset,
1950 return hw->phy.ops.read_i2c_byte(hw, byte_offset,
1951 IXGBE_I2C_EEPROM_DEV_ADDR2,
1956 * ixgbe_write_i2c_eeprom_generic - Writes 8 bit EEPROM word over I2C interface
1957 * @hw: pointer to hardware structure
1958 * @byte_offset: EEPROM byte offset to write
1959 * @eeprom_data: value to write
1961 * Performs byte write operation to SFP module's EEPROM over I2C interface.
1963 s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
1966 return hw->phy.ops.write_i2c_byte(hw, byte_offset,
1967 IXGBE_I2C_EEPROM_DEV_ADDR,
1972 * ixgbe_is_sfp_probe - Returns true if SFP is being detected
1973 * @hw: pointer to hardware structure
1974 * @offset: eeprom offset to be read
1975 * @addr: I2C address to be read
1977 static bool ixgbe_is_sfp_probe(struct ixgbe_hw *hw, u8 offset, u8 addr)
1979 if (addr == IXGBE_I2C_EEPROM_DEV_ADDR &&
1980 offset == IXGBE_SFF_IDENTIFIER &&
1981 hw->phy.sfp_type == ixgbe_sfp_type_not_present)
1987 * ixgbe_read_i2c_byte_generic_int - Reads 8 bit word over I2C
1988 * @hw: pointer to hardware structure
1989 * @byte_offset: byte offset to read
1990 * @dev_addr: device address
1992 * @lock: true if to take and release semaphore
1994 * Performs byte read operation to SFP module's EEPROM over I2C interface at
1995 * a specified device address.
1997 static s32 ixgbe_read_i2c_byte_generic_int(struct ixgbe_hw *hw, u8 byte_offset,
1998 u8 dev_addr, u8 *data, bool lock)
2003 u32 swfw_mask = hw->phy.phy_semaphore_mask;
2006 if (hw->mac.type >= ixgbe_mac_X550)
2008 if (ixgbe_is_sfp_probe(hw, byte_offset, dev_addr))
2009 max_retry = IXGBE_SFP_DETECT_RETRIES;
2014 if (lock && hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
2015 return IXGBE_ERR_SWFW_SYNC;
2017 ixgbe_i2c_start(hw);
2019 /* Device Address and write indication */
2020 status = ixgbe_clock_out_i2c_byte(hw, dev_addr);
2024 status = ixgbe_get_i2c_ack(hw);
2028 status = ixgbe_clock_out_i2c_byte(hw, byte_offset);
2032 status = ixgbe_get_i2c_ack(hw);
2036 ixgbe_i2c_start(hw);
2038 /* Device Address and read indication */
2039 status = ixgbe_clock_out_i2c_byte(hw, (dev_addr | 0x1));
2043 status = ixgbe_get_i2c_ack(hw);
2047 status = ixgbe_clock_in_i2c_byte(hw, data);
2051 status = ixgbe_clock_out_i2c_bit(hw, nack);
2057 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
2061 ixgbe_i2c_bus_clear(hw);
2063 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
2067 if (retry < max_retry)
2068 hw_dbg(hw, "I2C byte read error - Retrying.\n");
2070 hw_dbg(hw, "I2C byte read error.\n");
2072 } while (retry < max_retry);
2078 * ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C
2079 * @hw: pointer to hardware structure
2080 * @byte_offset: byte offset to read
2081 * @dev_addr: device address
2084 * Performs byte read operation to SFP module's EEPROM over I2C interface at
2085 * a specified device address.
2087 s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
2088 u8 dev_addr, u8 *data)
2090 return ixgbe_read_i2c_byte_generic_int(hw, byte_offset, dev_addr,
2095 * ixgbe_read_i2c_byte_generic_unlocked - Reads 8 bit word over I2C
2096 * @hw: pointer to hardware structure
2097 * @byte_offset: byte offset to read
2098 * @dev_addr: device address
2101 * Performs byte read operation to SFP module's EEPROM over I2C interface at
2102 * a specified device address.
2104 s32 ixgbe_read_i2c_byte_generic_unlocked(struct ixgbe_hw *hw, u8 byte_offset,
2105 u8 dev_addr, u8 *data)
2107 return ixgbe_read_i2c_byte_generic_int(hw, byte_offset, dev_addr,
2112 * ixgbe_write_i2c_byte_generic_int - Writes 8 bit word over I2C
2113 * @hw: pointer to hardware structure
2114 * @byte_offset: byte offset to write
2115 * @dev_addr: device address
2116 * @data: value to write
2117 * @lock: true if to take and release semaphore
2119 * Performs byte write operation to SFP module's EEPROM over I2C interface at
2120 * a specified device address.
2122 static s32 ixgbe_write_i2c_byte_generic_int(struct ixgbe_hw *hw, u8 byte_offset,
2123 u8 dev_addr, u8 data, bool lock)
2128 u32 swfw_mask = hw->phy.phy_semaphore_mask;
2130 if (lock && hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
2131 return IXGBE_ERR_SWFW_SYNC;
2134 ixgbe_i2c_start(hw);
2136 status = ixgbe_clock_out_i2c_byte(hw, dev_addr);
2140 status = ixgbe_get_i2c_ack(hw);
2144 status = ixgbe_clock_out_i2c_byte(hw, byte_offset);
2148 status = ixgbe_get_i2c_ack(hw);
2152 status = ixgbe_clock_out_i2c_byte(hw, data);
2156 status = ixgbe_get_i2c_ack(hw);
2162 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
2166 ixgbe_i2c_bus_clear(hw);
2168 if (retry < max_retry)
2169 hw_dbg(hw, "I2C byte write error - Retrying.\n");
2171 hw_dbg(hw, "I2C byte write error.\n");
2172 } while (retry < max_retry);
2175 hw->mac.ops.release_swfw_sync(hw, swfw_mask);
2181 * ixgbe_write_i2c_byte_generic - Writes 8 bit word over I2C
2182 * @hw: pointer to hardware structure
2183 * @byte_offset: byte offset to write
2184 * @dev_addr: device address
2185 * @data: value to write
2187 * Performs byte write operation to SFP module's EEPROM over I2C interface at
2188 * a specified device address.
2190 s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
2191 u8 dev_addr, u8 data)
2193 return ixgbe_write_i2c_byte_generic_int(hw, byte_offset, dev_addr,
2198 * ixgbe_write_i2c_byte_generic_unlocked - Writes 8 bit word over I2C
2199 * @hw: pointer to hardware structure
2200 * @byte_offset: byte offset to write
2201 * @dev_addr: device address
2202 * @data: value to write
2204 * Performs byte write operation to SFP module's EEPROM over I2C interface at
2205 * a specified device address.
2207 s32 ixgbe_write_i2c_byte_generic_unlocked(struct ixgbe_hw *hw, u8 byte_offset,
2208 u8 dev_addr, u8 data)
2210 return ixgbe_write_i2c_byte_generic_int(hw, byte_offset, dev_addr,
2215 * ixgbe_i2c_start - Sets I2C start condition
2216 * @hw: pointer to hardware structure
2218 * Sets I2C start condition (High -> Low on SDA while SCL is High)
2219 * Set bit-bang mode on X550 hardware.
2221 static void ixgbe_i2c_start(struct ixgbe_hw *hw)
2223 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2225 i2cctl |= IXGBE_I2C_BB_EN(hw);
2227 /* Start condition must begin with data and clock high */
2228 ixgbe_set_i2c_data(hw, &i2cctl, 1);
2229 ixgbe_raise_i2c_clk(hw, &i2cctl);
2231 /* Setup time for start condition (4.7us) */
2232 udelay(IXGBE_I2C_T_SU_STA);
2234 ixgbe_set_i2c_data(hw, &i2cctl, 0);
2236 /* Hold time for start condition (4us) */
2237 udelay(IXGBE_I2C_T_HD_STA);
2239 ixgbe_lower_i2c_clk(hw, &i2cctl);
2241 /* Minimum low period of clock is 4.7 us */
2242 udelay(IXGBE_I2C_T_LOW);
2247 * ixgbe_i2c_stop - Sets I2C stop condition
2248 * @hw: pointer to hardware structure
2250 * Sets I2C stop condition (Low -> High on SDA while SCL is High)
2251 * Disables bit-bang mode and negates data output enable on X550
2254 static void ixgbe_i2c_stop(struct ixgbe_hw *hw)
2256 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2257 u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN(hw);
2258 u32 clk_oe_bit = IXGBE_I2C_CLK_OE_N_EN(hw);
2259 u32 bb_en_bit = IXGBE_I2C_BB_EN(hw);
2261 /* Stop condition must begin with data low and clock high */
2262 ixgbe_set_i2c_data(hw, &i2cctl, 0);
2263 ixgbe_raise_i2c_clk(hw, &i2cctl);
2265 /* Setup time for stop condition (4us) */
2266 udelay(IXGBE_I2C_T_SU_STO);
2268 ixgbe_set_i2c_data(hw, &i2cctl, 1);
2270 /* bus free time between stop and start (4.7us)*/
2271 udelay(IXGBE_I2C_T_BUF);
2273 if (bb_en_bit || data_oe_bit || clk_oe_bit) {
2274 i2cctl &= ~bb_en_bit;
2275 i2cctl |= data_oe_bit | clk_oe_bit;
2276 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), i2cctl);
2277 IXGBE_WRITE_FLUSH(hw);
2282 * ixgbe_clock_in_i2c_byte - Clocks in one byte via I2C
2283 * @hw: pointer to hardware structure
2284 * @data: data byte to clock in
2286 * Clocks in one byte data via I2C data/clock
2288 static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data)
2294 for (i = 7; i >= 0; i--) {
2295 ixgbe_clock_in_i2c_bit(hw, &bit);
2303 * ixgbe_clock_out_i2c_byte - Clocks out one byte via I2C
2304 * @hw: pointer to hardware structure
2305 * @data: data byte clocked out
2307 * Clocks out one byte data via I2C data/clock
2309 static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data)
2316 for (i = 7; i >= 0; i--) {
2317 bit = (data >> i) & 0x1;
2318 status = ixgbe_clock_out_i2c_bit(hw, bit);
2324 /* Release SDA line (set high) */
2325 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2326 i2cctl |= IXGBE_I2C_DATA_OUT(hw);
2327 i2cctl |= IXGBE_I2C_DATA_OE_N_EN(hw);
2328 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), i2cctl);
2329 IXGBE_WRITE_FLUSH(hw);
2335 * ixgbe_get_i2c_ack - Polls for I2C ACK
2336 * @hw: pointer to hardware structure
2338 * Clocks in/out one bit via I2C data/clock
2340 static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw)
2342 u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN(hw);
2345 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2350 i2cctl |= IXGBE_I2C_DATA_OUT(hw);
2351 i2cctl |= data_oe_bit;
2352 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), i2cctl);
2353 IXGBE_WRITE_FLUSH(hw);
2355 ixgbe_raise_i2c_clk(hw, &i2cctl);
2357 /* Minimum high period of clock is 4us */
2358 udelay(IXGBE_I2C_T_HIGH);
2360 /* Poll for ACK. Note that ACK in I2C spec is
2361 * transition from 1 to 0 */
2362 for (i = 0; i < timeout; i++) {
2363 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2364 ack = ixgbe_get_i2c_data(hw, &i2cctl);
2372 hw_dbg(hw, "I2C ack was not received.\n");
2373 status = IXGBE_ERR_I2C;
2376 ixgbe_lower_i2c_clk(hw, &i2cctl);
2378 /* Minimum low period of clock is 4.7 us */
2379 udelay(IXGBE_I2C_T_LOW);
2385 * ixgbe_clock_in_i2c_bit - Clocks in one bit via I2C data/clock
2386 * @hw: pointer to hardware structure
2387 * @data: read data value
2389 * Clocks in one bit via I2C data/clock
2391 static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data)
2393 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2394 u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN(hw);
2397 i2cctl |= IXGBE_I2C_DATA_OUT(hw);
2398 i2cctl |= data_oe_bit;
2399 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), i2cctl);
2400 IXGBE_WRITE_FLUSH(hw);
2402 ixgbe_raise_i2c_clk(hw, &i2cctl);
2404 /* Minimum high period of clock is 4us */
2405 udelay(IXGBE_I2C_T_HIGH);
2407 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2408 *data = ixgbe_get_i2c_data(hw, &i2cctl);
2410 ixgbe_lower_i2c_clk(hw, &i2cctl);
2412 /* Minimum low period of clock is 4.7 us */
2413 udelay(IXGBE_I2C_T_LOW);
2419 * ixgbe_clock_out_i2c_bit - Clocks in/out one bit via I2C data/clock
2420 * @hw: pointer to hardware structure
2421 * @data: data value to write
2423 * Clocks out one bit via I2C data/clock
2425 static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data)
2428 u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2430 status = ixgbe_set_i2c_data(hw, &i2cctl, data);
2432 ixgbe_raise_i2c_clk(hw, &i2cctl);
2434 /* Minimum high period of clock is 4us */
2435 udelay(IXGBE_I2C_T_HIGH);
2437 ixgbe_lower_i2c_clk(hw, &i2cctl);
2439 /* Minimum low period of clock is 4.7 us.
2440 * This also takes care of the data hold time.
2442 udelay(IXGBE_I2C_T_LOW);
2444 hw_dbg(hw, "I2C data was not set to %X\n", data);
2445 return IXGBE_ERR_I2C;
2451 * ixgbe_raise_i2c_clk - Raises the I2C SCL clock
2452 * @hw: pointer to hardware structure
2453 * @i2cctl: Current value of I2CCTL register
2455 * Raises the I2C clock line '0'->'1'
2456 * Negates the I2C clock output enable on X550 hardware.
2458 static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
2460 u32 clk_oe_bit = IXGBE_I2C_CLK_OE_N_EN(hw);
2462 u32 timeout = IXGBE_I2C_CLOCK_STRETCHING_TIMEOUT;
2466 *i2cctl |= clk_oe_bit;
2467 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), *i2cctl);
2470 for (i = 0; i < timeout; i++) {
2471 *i2cctl |= IXGBE_I2C_CLK_OUT(hw);
2472 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), *i2cctl);
2473 IXGBE_WRITE_FLUSH(hw);
2474 /* SCL rise time (1000ns) */
2475 udelay(IXGBE_I2C_T_RISE);
2477 i2cctl_r = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2478 if (i2cctl_r & IXGBE_I2C_CLK_IN(hw))
2484 * ixgbe_lower_i2c_clk - Lowers the I2C SCL clock
2485 * @hw: pointer to hardware structure
2486 * @i2cctl: Current value of I2CCTL register
2488 * Lowers the I2C clock line '1'->'0'
2489 * Asserts the I2C clock output enable on X550 hardware.
2491 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
2494 *i2cctl &= ~IXGBE_I2C_CLK_OUT(hw);
2495 *i2cctl &= ~IXGBE_I2C_CLK_OE_N_EN(hw);
2497 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), *i2cctl);
2498 IXGBE_WRITE_FLUSH(hw);
2500 /* SCL fall time (300ns) */
2501 udelay(IXGBE_I2C_T_FALL);
2505 * ixgbe_set_i2c_data - Sets the I2C data bit
2506 * @hw: pointer to hardware structure
2507 * @i2cctl: Current value of I2CCTL register
2508 * @data: I2C data value (0 or 1) to set
2510 * Sets the I2C data bit
2511 * Asserts the I2C data output enable on X550 hardware.
2513 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data)
2515 u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN(hw);
2518 *i2cctl |= IXGBE_I2C_DATA_OUT(hw);
2520 *i2cctl &= ~IXGBE_I2C_DATA_OUT(hw);
2521 *i2cctl &= ~data_oe_bit;
2523 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), *i2cctl);
2524 IXGBE_WRITE_FLUSH(hw);
2526 /* Data rise/fall (1000ns/300ns) and set-up time (250ns) */
2527 udelay(IXGBE_I2C_T_RISE + IXGBE_I2C_T_FALL + IXGBE_I2C_T_SU_DATA);
2529 if (!data) /* Can't verify data in this case */
2532 *i2cctl |= data_oe_bit;
2533 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), *i2cctl);
2534 IXGBE_WRITE_FLUSH(hw);
2537 /* Verify data was set correctly */
2538 *i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2539 if (data != ixgbe_get_i2c_data(hw, i2cctl)) {
2540 hw_dbg(hw, "Error - I2C data was not set to %X.\n", data);
2541 return IXGBE_ERR_I2C;
2548 * ixgbe_get_i2c_data - Reads the I2C SDA data bit
2549 * @hw: pointer to hardware structure
2550 * @i2cctl: Current value of I2CCTL register
2552 * Returns the I2C data bit value
2553 * Negates the I2C data output enable on X550 hardware.
2555 static bool ixgbe_get_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl)
2557 u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN(hw);
2560 *i2cctl |= data_oe_bit;
2561 IXGBE_WRITE_REG(hw, IXGBE_I2CCTL(hw), *i2cctl);
2562 IXGBE_WRITE_FLUSH(hw);
2563 udelay(IXGBE_I2C_T_FALL);
2566 if (*i2cctl & IXGBE_I2C_DATA_IN(hw))
2572 * ixgbe_i2c_bus_clear - Clears the I2C bus
2573 * @hw: pointer to hardware structure
2575 * Clears the I2C bus by sending nine clock pulses.
2576 * Used when data line is stuck low.
2578 static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw)
2583 ixgbe_i2c_start(hw);
2584 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL(hw));
2586 ixgbe_set_i2c_data(hw, &i2cctl, 1);
2588 for (i = 0; i < 9; i++) {
2589 ixgbe_raise_i2c_clk(hw, &i2cctl);
2591 /* Min high period of clock is 4us */
2592 udelay(IXGBE_I2C_T_HIGH);
2594 ixgbe_lower_i2c_clk(hw, &i2cctl);
2596 /* Min low period of clock is 4.7us*/
2597 udelay(IXGBE_I2C_T_LOW);
2600 ixgbe_i2c_start(hw);
2602 /* Put the i2c bus back to default state */
2607 * ixgbe_tn_check_overtemp - Checks if an overtemp occurred.
2608 * @hw: pointer to hardware structure
2610 * Checks if the LASI temp alarm status was triggered due to overtemp
2612 s32 ixgbe_tn_check_overtemp(struct ixgbe_hw *hw)
2616 if (hw->device_id != IXGBE_DEV_ID_82599_T3_LOM)
2619 /* Check that the LASI temp alarm status was triggered */
2620 hw->phy.ops.read_reg(hw, IXGBE_TN_LASI_STATUS_REG,
2621 MDIO_MMD_PMAPMD, &phy_data);
2623 if (!(phy_data & IXGBE_TN_LASI_STATUS_TEMP_ALARM))
2626 return IXGBE_ERR_OVERTEMP;
2629 /** ixgbe_set_copper_phy_power - Control power for copper phy
2630 * @hw: pointer to hardware structure
2631 * @on: true for on, false for off
2633 s32 ixgbe_set_copper_phy_power(struct ixgbe_hw *hw, bool on)
2638 /* Bail if we don't have copper phy */
2639 if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_copper)
2642 if (!on && ixgbe_mng_present(hw))
2645 status = hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_VEND1, ®);
2650 reg &= ~IXGBE_MDIO_PHY_SET_LOW_POWER_MODE;
2652 if (ixgbe_check_reset_blocked(hw))
2654 reg |= IXGBE_MDIO_PHY_SET_LOW_POWER_MODE;
2657 status = hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_VEND1, reg);