1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Marvell 88E6352 family SERDES PCS support
5 * Copyright (c) 2008 Marvell Semiconductor
7 * Copyright (c) 2017 Andrew Lunn <andrew@lunn.ch>
9 #include <linux/interrupt.h>
10 #include <linux/irqdomain.h>
11 #include <linux/mii.h>
19 struct mv88e639x_pcs {
20 struct mdio_device mdio;
21 struct phylink_pcs sgmii_pcs;
22 struct phylink_pcs xg_pcs;
25 phy_interface_t interface;
28 irqreturn_t (*handle_irq)(struct mv88e639x_pcs *mpcs);
31 static int mv88e639x_read(struct mv88e639x_pcs *mpcs, u16 regnum, u16 *val)
35 err = mdiodev_c45_read(&mpcs->mdio, MDIO_MMD_PHYXS, regnum);
44 static int mv88e639x_write(struct mv88e639x_pcs *mpcs, u16 regnum, u16 val)
46 return mdiodev_c45_write(&mpcs->mdio, MDIO_MMD_PHYXS, regnum, val);
49 static int mv88e639x_modify(struct mv88e639x_pcs *mpcs, u16 regnum, u16 mask,
52 return mdiodev_c45_modify(&mpcs->mdio, MDIO_MMD_PHYXS, regnum, mask,
56 static int mv88e639x_modify_changed(struct mv88e639x_pcs *mpcs, u16 regnum,
59 return mdiodev_c45_modify_changed(&mpcs->mdio, MDIO_MMD_PHYXS, regnum,
63 static struct mv88e639x_pcs *
64 mv88e639x_pcs_alloc(struct device *dev, struct mii_bus *bus, unsigned int addr,
67 struct mv88e639x_pcs *mpcs;
69 mpcs = kzalloc(sizeof(*mpcs), GFP_KERNEL);
73 mpcs->mdio.dev.parent = dev;
75 mpcs->mdio.addr = addr;
77 snprintf(mpcs->name, sizeof(mpcs->name),
78 "mv88e6xxx-%s-serdes-%d", dev_name(dev), port);
83 static irqreturn_t mv88e639x_pcs_handle_irq(int irq, void *dev_id)
85 struct mv88e639x_pcs *mpcs = dev_id;
86 irqreturn_t (*handler)(struct mv88e639x_pcs *);
88 handler = READ_ONCE(mpcs->handle_irq);
95 static int mv88e639x_pcs_setup_irq(struct mv88e639x_pcs *mpcs,
96 struct mv88e6xxx_chip *chip, int port)
100 irq = mv88e6xxx_serdes_irq_mapping(chip, port);
102 /* Use polling mode */
103 mpcs->sgmii_pcs.poll = true;
104 mpcs->xg_pcs.poll = true;
110 return request_threaded_irq(irq, NULL, mv88e639x_pcs_handle_irq,
111 IRQF_ONESHOT, mpcs->name, mpcs);
114 static void mv88e639x_pcs_teardown(struct mv88e6xxx_chip *chip, int port)
116 struct mv88e639x_pcs *mpcs = chip->ports[port].pcs_private;
122 free_irq(mpcs->irq, mpcs);
126 chip->ports[port].pcs_private = NULL;
129 static struct mv88e639x_pcs *sgmii_pcs_to_mv88e639x_pcs(struct phylink_pcs *pcs)
131 return container_of(pcs, struct mv88e639x_pcs, sgmii_pcs);
134 static irqreturn_t mv88e639x_sgmii_handle_irq(struct mv88e639x_pcs *mpcs)
139 err = mv88e639x_read(mpcs, MV88E6390_SGMII_INT_STATUS, &int_status);
143 if (int_status & (MV88E6390_SGMII_INT_LINK_DOWN |
144 MV88E6390_SGMII_INT_LINK_UP)) {
145 phylink_pcs_change(&mpcs->sgmii_pcs,
146 int_status & MV88E6390_SGMII_INT_LINK_UP);
154 static int mv88e639x_sgmii_pcs_control_irq(struct mv88e639x_pcs *mpcs,
160 val |= MV88E6390_SGMII_INT_LINK_DOWN |
161 MV88E6390_SGMII_INT_LINK_UP;
163 return mv88e639x_modify(mpcs, MV88E6390_SGMII_INT_ENABLE,
164 MV88E6390_SGMII_INT_LINK_DOWN |
165 MV88E6390_SGMII_INT_LINK_UP, val);
168 static int mv88e639x_sgmii_pcs_control_pwr(struct mv88e639x_pcs *mpcs,
174 mask = BMCR_RESET | BMCR_LOOPBACK | BMCR_PDOWN;
177 mask = val = BMCR_PDOWN;
180 return mv88e639x_modify(mpcs, MV88E6390_SGMII_BMCR, mask, val);
183 static int mv88e639x_sgmii_pcs_enable(struct phylink_pcs *pcs)
185 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
187 /* power enable done in post_config */
188 mpcs->handle_irq = mv88e639x_sgmii_handle_irq;
190 return mv88e639x_sgmii_pcs_control_irq(mpcs, !!mpcs->irq);
193 static void mv88e639x_sgmii_pcs_disable(struct phylink_pcs *pcs)
195 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
197 mv88e639x_sgmii_pcs_control_irq(mpcs, false);
198 mv88e639x_sgmii_pcs_control_pwr(mpcs, false);
201 static void mv88e639x_sgmii_pcs_pre_config(struct phylink_pcs *pcs,
202 phy_interface_t interface)
204 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
206 mv88e639x_sgmii_pcs_control_pwr(mpcs, false);
209 static int mv88e6390_erratum_3_14(struct mv88e639x_pcs *mpcs)
211 static const int lanes[] = { MV88E6390_PORT9_LANE0, MV88E6390_PORT9_LANE1,
212 MV88E6390_PORT9_LANE2, MV88E6390_PORT9_LANE3,
213 MV88E6390_PORT10_LANE0, MV88E6390_PORT10_LANE1,
214 MV88E6390_PORT10_LANE2, MV88E6390_PORT10_LANE3 };
217 /* 88e6190x and 88e6390x errata 3.14:
218 * After chip reset, SERDES reconfiguration or SERDES core
219 * Software Reset, the SERDES lanes may not be properly aligned
220 * resulting in CRC errors
223 for (i = 0; i < ARRAY_SIZE(lanes); i++) {
224 err = mdiobus_c45_write(mpcs->mdio.bus, lanes[i],
230 err = mdiobus_c45_write(mpcs->mdio.bus, lanes[i],
240 static int mv88e639x_sgmii_pcs_post_config(struct phylink_pcs *pcs,
241 phy_interface_t interface)
243 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
246 mv88e639x_sgmii_pcs_control_pwr(mpcs, true);
248 if (mpcs->erratum_3_14) {
249 err = mv88e6390_erratum_3_14(mpcs);
251 dev_err(mpcs->mdio.dev.parent,
252 "failed to apply erratum 3.14: %pe\n",
259 static void mv88e639x_sgmii_pcs_get_state(struct phylink_pcs *pcs,
260 struct phylink_link_state *state)
262 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
263 u16 bmsr, lpa, status;
266 err = mv88e639x_read(mpcs, MV88E6390_SGMII_BMSR, &bmsr);
268 dev_err(mpcs->mdio.dev.parent,
269 "can't read Serdes PHY %s: %pe\n",
270 "BMSR", ERR_PTR(err));
275 err = mv88e639x_read(mpcs, MV88E6390_SGMII_LPA, &lpa);
277 dev_err(mpcs->mdio.dev.parent,
278 "can't read Serdes PHY %s: %pe\n",
279 "LPA", ERR_PTR(err));
284 err = mv88e639x_read(mpcs, MV88E6390_SGMII_PHY_STATUS, &status);
286 dev_err(mpcs->mdio.dev.parent,
287 "can't read Serdes PHY %s: %pe\n",
288 "status", ERR_PTR(err));
293 mv88e6xxx_pcs_decode_state(mpcs->mdio.dev.parent, bmsr, lpa, status,
297 static int mv88e639x_sgmii_pcs_config(struct phylink_pcs *pcs,
298 unsigned int neg_mode,
299 phy_interface_t interface,
300 const unsigned long *advertising,
301 bool permit_pause_to_mac)
303 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
308 adv = phylink_mii_c22_pcs_encode_advertisement(interface, advertising);
312 mpcs->interface = interface;
314 err = mv88e639x_modify_changed(mpcs, MV88E6390_SGMII_ADVERTISE,
321 err = mv88e639x_read(mpcs, MV88E6390_SGMII_BMCR, &val);
325 if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED)
326 bmcr = val | BMCR_ANENABLE;
328 bmcr = val & ~BMCR_ANENABLE;
330 /* setting ANENABLE triggers a restart of negotiation */
334 return mv88e639x_write(mpcs, MV88E6390_SGMII_BMCR, bmcr);
337 static void mv88e639x_sgmii_pcs_an_restart(struct phylink_pcs *pcs)
339 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
341 mv88e639x_modify(mpcs, MV88E6390_SGMII_BMCR,
342 BMCR_ANRESTART, BMCR_ANRESTART);
345 static void mv88e639x_sgmii_pcs_link_up(struct phylink_pcs *pcs,
347 phy_interface_t interface,
348 int speed, int duplex)
350 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
354 if (phylink_autoneg_inband(mode))
357 bmcr = mii_bmcr_encode_fixed(speed, duplex);
359 err = mv88e639x_modify(mpcs, MV88E6390_SGMII_BMCR,
360 BMCR_SPEED1000 | BMCR_SPEED100 | BMCR_FULLDPLX,
363 dev_err(mpcs->mdio.dev.parent,
364 "can't access Serdes PHY %s: %pe\n",
365 "BMCR", ERR_PTR(err));
368 static const struct phylink_pcs_ops mv88e639x_sgmii_pcs_ops = {
369 .pcs_enable = mv88e639x_sgmii_pcs_enable,
370 .pcs_disable = mv88e639x_sgmii_pcs_disable,
371 .pcs_pre_config = mv88e639x_sgmii_pcs_pre_config,
372 .pcs_post_config = mv88e639x_sgmii_pcs_post_config,
373 .pcs_get_state = mv88e639x_sgmii_pcs_get_state,
374 .pcs_an_restart = mv88e639x_sgmii_pcs_an_restart,
375 .pcs_config = mv88e639x_sgmii_pcs_config,
376 .pcs_link_up = mv88e639x_sgmii_pcs_link_up,
379 static struct mv88e639x_pcs *xg_pcs_to_mv88e639x_pcs(struct phylink_pcs *pcs)
381 return container_of(pcs, struct mv88e639x_pcs, xg_pcs);
384 static int mv88e639x_xg_pcs_enable(struct mv88e639x_pcs *mpcs)
386 return mv88e639x_modify(mpcs, MV88E6390_10G_CTRL1,
387 MDIO_CTRL1_RESET | MDIO_PCS_CTRL1_LOOPBACK |
388 MDIO_CTRL1_LPOWER, 0);
391 static void mv88e639x_xg_pcs_disable(struct mv88e639x_pcs *mpcs)
393 mv88e639x_modify(mpcs, MV88E6390_10G_CTRL1, MDIO_CTRL1_LPOWER,
397 static void mv88e639x_xg_pcs_get_state(struct phylink_pcs *pcs,
398 struct phylink_link_state *state)
400 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
406 err = mv88e639x_read(mpcs, MV88E6390_10G_STAT1, &status);
408 dev_err(mpcs->mdio.dev.parent,
409 "can't read Serdes PHY %s: %pe\n",
410 "STAT1", ERR_PTR(err));
414 state->link = !!(status & MDIO_STAT1_LSTATUS);
416 switch (state->interface) {
417 case PHY_INTERFACE_MODE_5GBASER:
418 state->speed = SPEED_5000;
421 case PHY_INTERFACE_MODE_10GBASER:
422 case PHY_INTERFACE_MODE_RXAUI:
423 case PHY_INTERFACE_MODE_XAUI:
424 state->speed = SPEED_10000;
432 state->duplex = DUPLEX_FULL;
436 static int mv88e639x_xg_pcs_config(struct phylink_pcs *pcs,
437 unsigned int neg_mode,
438 phy_interface_t interface,
439 const unsigned long *advertising,
440 bool permit_pause_to_mac)
445 static struct phylink_pcs *
446 mv88e639x_pcs_select(struct mv88e6xxx_chip *chip, int port,
447 phy_interface_t mode)
449 struct mv88e639x_pcs *mpcs;
451 mpcs = chip->ports[port].pcs_private;
456 case PHY_INTERFACE_MODE_SGMII:
457 case PHY_INTERFACE_MODE_1000BASEX:
458 case PHY_INTERFACE_MODE_2500BASEX:
459 return &mpcs->sgmii_pcs;
461 case PHY_INTERFACE_MODE_5GBASER:
462 if (!mpcs->supports_5g)
465 case PHY_INTERFACE_MODE_10GBASER:
466 case PHY_INTERFACE_MODE_XAUI:
467 case PHY_INTERFACE_MODE_RXAUI:
468 case PHY_INTERFACE_MODE_USXGMII:
469 return &mpcs->xg_pcs;
476 /* Marvell 88E6390 Specific support */
478 static irqreturn_t mv88e6390_xg_handle_irq(struct mv88e639x_pcs *mpcs)
483 err = mv88e639x_read(mpcs, MV88E6390_10G_INT_STATUS, &int_status);
487 if (int_status & (MV88E6390_10G_INT_LINK_DOWN |
488 MV88E6390_10G_INT_LINK_UP)) {
489 phylink_pcs_change(&mpcs->xg_pcs,
490 int_status & MV88E6390_10G_INT_LINK_UP);
498 static int mv88e6390_xg_control_irq(struct mv88e639x_pcs *mpcs, bool enable)
503 val = MV88E6390_10G_INT_LINK_DOWN | MV88E6390_10G_INT_LINK_UP;
505 return mv88e639x_modify(mpcs, MV88E6390_10G_INT_ENABLE,
506 MV88E6390_10G_INT_LINK_DOWN |
507 MV88E6390_10G_INT_LINK_UP, val);
510 static int mv88e6390_xg_pcs_enable(struct phylink_pcs *pcs)
512 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
515 err = mv88e639x_xg_pcs_enable(mpcs);
519 mpcs->handle_irq = mv88e6390_xg_handle_irq;
521 return mv88e6390_xg_control_irq(mpcs, !!mpcs->irq);
524 static void mv88e6390_xg_pcs_disable(struct phylink_pcs *pcs)
526 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
528 mv88e6390_xg_control_irq(mpcs, false);
529 mv88e639x_xg_pcs_disable(mpcs);
532 static const struct phylink_pcs_ops mv88e6390_xg_pcs_ops = {
533 .pcs_enable = mv88e6390_xg_pcs_enable,
534 .pcs_disable = mv88e6390_xg_pcs_disable,
535 .pcs_get_state = mv88e639x_xg_pcs_get_state,
536 .pcs_config = mv88e639x_xg_pcs_config,
539 static int mv88e6390_pcs_enable_checker(struct mv88e639x_pcs *mpcs)
541 return mv88e639x_modify(mpcs, MV88E6390_PG_CONTROL,
542 MV88E6390_PG_CONTROL_ENABLE_PC,
543 MV88E6390_PG_CONTROL_ENABLE_PC);
546 static int mv88e6390_pcs_init(struct mv88e6xxx_chip *chip, int port)
548 struct mv88e639x_pcs *mpcs;
553 lane = mv88e6xxx_serdes_get_lane(chip, port);
557 bus = mv88e6xxx_default_mdio_bus(chip);
560 mpcs = mv88e639x_pcs_alloc(dev, bus, lane, port);
564 mpcs->sgmii_pcs.ops = &mv88e639x_sgmii_pcs_ops;
565 mpcs->sgmii_pcs.neg_mode = true;
566 mpcs->xg_pcs.ops = &mv88e6390_xg_pcs_ops;
567 mpcs->xg_pcs.neg_mode = true;
569 if (chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6190X ||
570 chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6390X)
571 mpcs->erratum_3_14 = true;
573 err = mv88e639x_pcs_setup_irq(mpcs, chip, port);
577 /* 6390 and 6390x has the checker, 6393x doesn't appear to? */
578 /* This is to enable gathering the statistics. Maybe this
579 * should call out to a helper? Or we could do this at init time.
581 err = mv88e6390_pcs_enable_checker(mpcs);
585 chip->ports[port].pcs_private = mpcs;
594 const struct mv88e6xxx_pcs_ops mv88e6390_pcs_ops = {
595 .pcs_init = mv88e6390_pcs_init,
596 .pcs_teardown = mv88e639x_pcs_teardown,
597 .pcs_select = mv88e639x_pcs_select,
600 /* Marvell 88E6393X Specific support */
602 static int mv88e6393x_power_lane(struct mv88e639x_pcs *mpcs, bool enable)
604 u16 val = MV88E6393X_SERDES_CTRL1_TX_PDOWN |
605 MV88E6393X_SERDES_CTRL1_RX_PDOWN;
607 return mv88e639x_modify(mpcs, MV88E6393X_SERDES_CTRL1, val,
611 /* mv88e6393x family errata 4.6:
612 * Cannot clear PwrDn bit on SERDES if device is configured CPU_MGD mode or
613 * P0_mode is configured for [x]MII.
614 * Workaround: Set SERDES register 4.F002 bit 5=0 and bit 15=1.
616 * It seems that after this workaround the SERDES is automatically powered up
617 * (the bit is cleared), so power it down.
619 static int mv88e6393x_erratum_4_6(struct mv88e639x_pcs *mpcs)
623 err = mv88e639x_modify(mpcs, MV88E6393X_SERDES_POC,
624 MV88E6393X_SERDES_POC_PDOWN |
625 MV88E6393X_SERDES_POC_RESET,
626 MV88E6393X_SERDES_POC_RESET);
630 err = mv88e639x_modify(mpcs, MV88E6390_SGMII_BMCR,
631 BMCR_PDOWN, BMCR_PDOWN);
635 err = mv88e639x_sgmii_pcs_control_pwr(mpcs, false);
639 return mv88e6393x_power_lane(mpcs, false);
642 /* mv88e6393x family errata 4.8:
643 * When a SERDES port is operating in 1000BASE-X or SGMII mode link may not
644 * come up after hardware reset or software reset of SERDES core. Workaround
645 * is to write SERDES register 4.F074.14=1 for only those modes and 0 in all
648 static int mv88e6393x_erratum_4_8(struct mv88e639x_pcs *mpcs)
653 err = mv88e639x_read(mpcs, MV88E6393X_SERDES_POC, &poc);
657 poc &= MV88E6393X_SERDES_POC_PCS_MASK;
658 if (poc == MV88E6393X_SERDES_POC_PCS_1000BASEX ||
659 poc == MV88E6393X_SERDES_POC_PCS_SGMII_PHY ||
660 poc == MV88E6393X_SERDES_POC_PCS_SGMII_MAC)
661 reg = MV88E6393X_ERRATA_4_8_BIT;
665 return mv88e639x_modify(mpcs, MV88E6393X_ERRATA_4_8_REG,
666 MV88E6393X_ERRATA_4_8_BIT, reg);
669 /* mv88e6393x family errata 5.2:
670 * For optimal signal integrity the following sequence should be applied to
671 * SERDES operating in 10G mode. These registers only apply to 10G operation
672 * and have no effect on other speeds.
674 static int mv88e6393x_erratum_5_2(struct mv88e639x_pcs *mpcs)
676 static const struct {
677 u16 dev, reg, val, mask;
679 { MDIO_MMD_VEND1, 0x8093, 0xcb5a, 0xffff },
680 { MDIO_MMD_VEND1, 0x8171, 0x7088, 0xffff },
681 { MDIO_MMD_VEND1, 0x80c9, 0x311a, 0xffff },
682 { MDIO_MMD_VEND1, 0x80a2, 0x8000, 0xff7f },
683 { MDIO_MMD_VEND1, 0x80a9, 0x0000, 0xfff0 },
684 { MDIO_MMD_VEND1, 0x80a3, 0x0000, 0xf8ff },
685 { MDIO_MMD_PHYXS, MV88E6393X_SERDES_POC,
686 MV88E6393X_SERDES_POC_RESET, MV88E6393X_SERDES_POC_RESET },
690 for (i = 0; i < ARRAY_SIZE(fixes); ++i) {
691 err = mdiodev_c45_modify(&mpcs->mdio, fixes[i].dev,
692 fixes[i].reg, fixes[i].mask,
701 /* Inband AN is broken on Amethyst in 2500base-x mode when set by standard
702 * mechanism (via cmode).
703 * We can get around this by configuring the PCS mode to 1000base-x and then
704 * writing value 0x58 to register 1e.8000. (This must be done while SerDes
705 * receiver and transmitter are disabled, which is, when this function is
707 * It seem that when we do this configuration to 2500base-x mode (by changing
708 * PCS mode to 1000base-x and frequency to 3.125 GHz from 1.25 GHz) and then
709 * configure to sgmii or 1000base-x, the device thinks that it already has
710 * SerDes at 1.25 GHz and does not change the 1e.8000 register, leaving SerDes
712 * To avoid this, change PCS mode back to 2500base-x when disabling SerDes from
715 static int mv88e6393x_fix_2500basex_an(struct mv88e639x_pcs *mpcs, bool on)
721 reg = MV88E6393X_SERDES_POC_PCS_1000BASEX |
722 MV88E6393X_SERDES_POC_AN;
724 reg = MV88E6393X_SERDES_POC_PCS_2500BASEX;
726 reg |= MV88E6393X_SERDES_POC_RESET;
728 err = mv88e639x_modify(mpcs, MV88E6393X_SERDES_POC,
729 MV88E6393X_SERDES_POC_PCS_MASK |
730 MV88E6393X_SERDES_POC_AN |
731 MV88E6393X_SERDES_POC_RESET, reg);
735 return mdiodev_c45_write(&mpcs->mdio, MDIO_MMD_VEND1, 0x8000, 0x58);
738 static int mv88e6393x_sgmii_apply_2500basex_an(struct mv88e639x_pcs *mpcs,
739 phy_interface_t interface,
744 if (interface != PHY_INTERFACE_MODE_2500BASEX)
747 err = mv88e6393x_fix_2500basex_an(mpcs, enable);
749 dev_err(mpcs->mdio.dev.parent,
750 "failed to %s 2500basex fix: %pe\n",
751 enable ? "enable" : "disable", ERR_PTR(err));
756 static void mv88e6393x_sgmii_pcs_disable(struct phylink_pcs *pcs)
758 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
760 mv88e639x_sgmii_pcs_disable(pcs);
761 mv88e6393x_power_lane(mpcs, false);
762 mv88e6393x_sgmii_apply_2500basex_an(mpcs, mpcs->interface, false);
765 static void mv88e6393x_sgmii_pcs_pre_config(struct phylink_pcs *pcs,
766 phy_interface_t interface)
768 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
770 mv88e639x_sgmii_pcs_pre_config(pcs, interface);
771 mv88e6393x_power_lane(mpcs, false);
772 mv88e6393x_sgmii_apply_2500basex_an(mpcs, mpcs->interface, false);
775 static int mv88e6393x_sgmii_pcs_post_config(struct phylink_pcs *pcs,
776 phy_interface_t interface)
778 struct mv88e639x_pcs *mpcs = sgmii_pcs_to_mv88e639x_pcs(pcs);
781 err = mv88e6393x_erratum_4_8(mpcs);
785 err = mv88e6393x_sgmii_apply_2500basex_an(mpcs, interface, true);
789 err = mv88e6393x_power_lane(mpcs, true);
793 return mv88e639x_sgmii_pcs_post_config(pcs, interface);
796 static const struct phylink_pcs_ops mv88e6393x_sgmii_pcs_ops = {
797 .pcs_enable = mv88e639x_sgmii_pcs_enable,
798 .pcs_disable = mv88e6393x_sgmii_pcs_disable,
799 .pcs_pre_config = mv88e6393x_sgmii_pcs_pre_config,
800 .pcs_post_config = mv88e6393x_sgmii_pcs_post_config,
801 .pcs_get_state = mv88e639x_sgmii_pcs_get_state,
802 .pcs_an_restart = mv88e639x_sgmii_pcs_an_restart,
803 .pcs_config = mv88e639x_sgmii_pcs_config,
804 .pcs_link_up = mv88e639x_sgmii_pcs_link_up,
807 static irqreturn_t mv88e6393x_xg_handle_irq(struct mv88e639x_pcs *mpcs)
809 u16 int_status, stat1;
813 err = mv88e639x_read(mpcs, MV88E6393X_10G_INT_STATUS, &int_status);
817 if (int_status & MV88E6393X_10G_INT_LINK_CHANGE) {
818 err = mv88e639x_read(mpcs, MV88E6390_10G_STAT1, &stat1);
822 link_down = !(stat1 & MDIO_STAT1_LSTATUS);
824 phylink_pcs_change(&mpcs->xg_pcs, !link_down);
832 static int mv88e6393x_xg_control_irq(struct mv88e639x_pcs *mpcs, bool enable)
837 val = MV88E6393X_10G_INT_LINK_CHANGE;
839 return mv88e639x_modify(mpcs, MV88E6393X_10G_INT_ENABLE,
840 MV88E6393X_10G_INT_LINK_CHANGE, val);
843 static int mv88e6393x_xg_pcs_enable(struct phylink_pcs *pcs)
845 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
847 mpcs->handle_irq = mv88e6393x_xg_handle_irq;
849 return mv88e6393x_xg_control_irq(mpcs, !!mpcs->irq);
852 static void mv88e6393x_xg_pcs_disable(struct phylink_pcs *pcs)
854 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
856 mv88e6393x_xg_control_irq(mpcs, false);
857 mv88e639x_xg_pcs_disable(mpcs);
858 mv88e6393x_power_lane(mpcs, false);
861 /* The PCS has to be powered down while CMODE is changed */
862 static void mv88e6393x_xg_pcs_pre_config(struct phylink_pcs *pcs,
863 phy_interface_t interface)
865 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
867 mv88e639x_xg_pcs_disable(mpcs);
868 mv88e6393x_power_lane(mpcs, false);
871 static int mv88e6393x_xg_pcs_post_config(struct phylink_pcs *pcs,
872 phy_interface_t interface)
874 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
877 if (interface == PHY_INTERFACE_MODE_10GBASER ||
878 interface == PHY_INTERFACE_MODE_USXGMII) {
879 err = mv88e6393x_erratum_5_2(mpcs);
884 err = mv88e6393x_power_lane(mpcs, true);
888 return mv88e639x_xg_pcs_enable(mpcs);
891 static void mv88e6393x_xg_pcs_get_state(struct phylink_pcs *pcs,
892 struct phylink_link_state *state)
894 struct mv88e639x_pcs *mpcs = xg_pcs_to_mv88e639x_pcs(pcs);
895 u16 status, lp_status;
898 if (state->interface != PHY_INTERFACE_MODE_USXGMII)
899 return mv88e639x_xg_pcs_get_state(pcs, state);
903 err = mv88e639x_read(mpcs, MV88E6390_USXGMII_PHY_STATUS, &status);
904 err = err ? : mv88e639x_read(mpcs, MV88E6390_USXGMII_LP_STATUS, &lp_status);
906 dev_err(mpcs->mdio.dev.parent,
907 "can't read USXGMII status: %pe\n", ERR_PTR(err));
911 state->link = !!(status & MDIO_USXGMII_LINK);
912 state->an_complete = state->link;
913 phylink_decode_usxgmii_word(state, lp_status);
916 static const struct phylink_pcs_ops mv88e6393x_xg_pcs_ops = {
917 .pcs_enable = mv88e6393x_xg_pcs_enable,
918 .pcs_disable = mv88e6393x_xg_pcs_disable,
919 .pcs_pre_config = mv88e6393x_xg_pcs_pre_config,
920 .pcs_post_config = mv88e6393x_xg_pcs_post_config,
921 .pcs_get_state = mv88e6393x_xg_pcs_get_state,
922 .pcs_config = mv88e639x_xg_pcs_config,
925 static int mv88e6393x_pcs_init(struct mv88e6xxx_chip *chip, int port)
927 struct mv88e639x_pcs *mpcs;
932 lane = mv88e6xxx_serdes_get_lane(chip, port);
936 bus = mv88e6xxx_default_mdio_bus(chip);
939 mpcs = mv88e639x_pcs_alloc(dev, bus, lane, port);
943 mpcs->sgmii_pcs.ops = &mv88e6393x_sgmii_pcs_ops;
944 mpcs->sgmii_pcs.neg_mode = true;
945 mpcs->xg_pcs.ops = &mv88e6393x_xg_pcs_ops;
946 mpcs->xg_pcs.neg_mode = true;
947 mpcs->supports_5g = true;
949 err = mv88e6393x_erratum_4_6(mpcs);
953 err = mv88e639x_pcs_setup_irq(mpcs, chip, port);
957 chip->ports[port].pcs_private = mpcs;
966 const struct mv88e6xxx_pcs_ops mv88e6393x_pcs_ops = {
967 .pcs_init = mv88e6393x_pcs_init,
968 .pcs_teardown = mv88e639x_pcs_teardown,
969 .pcs_select = mv88e639x_pcs_select,