2 * drivers/net/phy/marvell.c
4 * Driver for Marvell PHYs
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/string.h>
18 #include <linux/errno.h>
19 #include <linux/unistd.h>
20 #include <linux/interrupt.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/netdevice.h>
24 #include <linux/etherdevice.h>
25 #include <linux/skbuff.h>
26 #include <linux/spinlock.h>
28 #include <linux/module.h>
29 #include <linux/mii.h>
30 #include <linux/ethtool.h>
31 #include <linux/phy.h>
32 #include <linux/marvell_phy.h>
36 #include <asm/uaccess.h>
38 #define MII_MARVELL_PHY_PAGE 22
40 #define MII_M1011_IEVENT 0x13
41 #define MII_M1011_IEVENT_CLEAR 0x0000
43 #define MII_M1011_IMASK 0x12
44 #define MII_M1011_IMASK_INIT 0x6400
45 #define MII_M1011_IMASK_CLEAR 0x0000
47 #define MII_M1011_PHY_SCR 0x10
48 #define MII_M1011_PHY_SCR_AUTO_CROSS 0x0060
50 #define MII_M1145_PHY_EXT_CR 0x14
51 #define MII_M1145_RGMII_RX_DELAY 0x0080
52 #define MII_M1145_RGMII_TX_DELAY 0x0002
54 #define MII_M1111_PHY_LED_CONTROL 0x18
55 #define MII_M1111_PHY_LED_DIRECT 0x4100
56 #define MII_M1111_PHY_LED_COMBINE 0x411c
57 #define MII_M1111_PHY_EXT_CR 0x14
58 #define MII_M1111_RX_DELAY 0x80
59 #define MII_M1111_TX_DELAY 0x2
60 #define MII_M1111_PHY_EXT_SR 0x1b
62 #define MII_M1111_HWCFG_MODE_MASK 0xf
63 #define MII_M1111_HWCFG_MODE_COPPER_RGMII 0xb
64 #define MII_M1111_HWCFG_MODE_FIBER_RGMII 0x3
65 #define MII_M1111_HWCFG_MODE_SGMII_NO_CLK 0x4
66 #define MII_M1111_HWCFG_MODE_COPPER_RTBI 0x9
67 #define MII_M1111_HWCFG_FIBER_COPPER_AUTO 0x8000
68 #define MII_M1111_HWCFG_FIBER_COPPER_RES 0x2000
70 #define MII_M1111_COPPER 0
71 #define MII_M1111_FIBER 1
73 #define MII_88E1121_PHY_MSCR_PAGE 2
74 #define MII_88E1121_PHY_MSCR_REG 21
75 #define MII_88E1121_PHY_MSCR_RX_DELAY BIT(5)
76 #define MII_88E1121_PHY_MSCR_TX_DELAY BIT(4)
77 #define MII_88E1121_PHY_MSCR_DELAY_MASK (~(0x3 << 4))
79 #define MII_88E1318S_PHY_MSCR1_REG 16
80 #define MII_88E1318S_PHY_MSCR1_PAD_ODD BIT(6)
82 #define MII_88E1121_PHY_LED_CTRL 16
83 #define MII_88E1121_PHY_LED_PAGE 3
84 #define MII_88E1121_PHY_LED_DEF 0x0030
86 #define MII_M1011_PHY_STATUS 0x11
87 #define MII_M1011_PHY_STATUS_1000 0x8000
88 #define MII_M1011_PHY_STATUS_100 0x4000
89 #define MII_M1011_PHY_STATUS_SPD_MASK 0xc000
90 #define MII_M1011_PHY_STATUS_FULLDUPLEX 0x2000
91 #define MII_M1011_PHY_STATUS_RESOLVED 0x0800
92 #define MII_M1011_PHY_STATUS_LINK 0x0400
95 MODULE_DESCRIPTION("Marvell PHY driver");
96 MODULE_AUTHOR("Andy Fleming");
97 MODULE_LICENSE("GPL");
99 static int marvell_ack_interrupt(struct phy_device *phydev)
103 /* Clear the interrupts by reading the reg */
104 err = phy_read(phydev, MII_M1011_IEVENT);
112 static int marvell_config_intr(struct phy_device *phydev)
116 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
117 err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
119 err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
124 static int marvell_config_aneg(struct phy_device *phydev)
128 /* The Marvell PHY has an errata which requires
129 * that certain registers get written in order
130 * to restart autonegotiation */
131 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
136 err = phy_write(phydev, 0x1d, 0x1f);
140 err = phy_write(phydev, 0x1e, 0x200c);
144 err = phy_write(phydev, 0x1d, 0x5);
148 err = phy_write(phydev, 0x1e, 0);
152 err = phy_write(phydev, 0x1e, 0x100);
156 err = phy_write(phydev, MII_M1011_PHY_SCR,
157 MII_M1011_PHY_SCR_AUTO_CROSS);
161 err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL,
162 MII_M1111_PHY_LED_DIRECT);
166 err = genphy_config_aneg(phydev);
170 if (phydev->autoneg != AUTONEG_ENABLE) {
174 * A write to speed/duplex bits (that is performed by
175 * genphy_config_aneg() call above) must be followed by
176 * a software reset. Otherwise, the write has no effect.
178 bmcr = phy_read(phydev, MII_BMCR);
182 err = phy_write(phydev, MII_BMCR, bmcr | BMCR_RESET);
190 static int m88e1121_config_aneg(struct phy_device *phydev)
192 int err, oldpage, mscr;
194 oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE);
196 err = phy_write(phydev, MII_MARVELL_PHY_PAGE,
197 MII_88E1121_PHY_MSCR_PAGE);
201 if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
202 (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
203 (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
204 (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
206 mscr = phy_read(phydev, MII_88E1121_PHY_MSCR_REG) &
207 MII_88E1121_PHY_MSCR_DELAY_MASK;
209 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
210 mscr |= (MII_88E1121_PHY_MSCR_RX_DELAY |
211 MII_88E1121_PHY_MSCR_TX_DELAY);
212 else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
213 mscr |= MII_88E1121_PHY_MSCR_RX_DELAY;
214 else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
215 mscr |= MII_88E1121_PHY_MSCR_TX_DELAY;
217 err = phy_write(phydev, MII_88E1121_PHY_MSCR_REG, mscr);
222 phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage);
224 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
228 err = phy_write(phydev, MII_M1011_PHY_SCR,
229 MII_M1011_PHY_SCR_AUTO_CROSS);
233 oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE);
235 phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_88E1121_PHY_LED_PAGE);
236 phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF);
237 phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage);
239 err = genphy_config_aneg(phydev);
244 static int m88e1318_config_aneg(struct phy_device *phydev)
246 int err, oldpage, mscr;
248 oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE);
250 err = phy_write(phydev, MII_MARVELL_PHY_PAGE,
251 MII_88E1121_PHY_MSCR_PAGE);
255 mscr = phy_read(phydev, MII_88E1318S_PHY_MSCR1_REG);
256 mscr |= MII_88E1318S_PHY_MSCR1_PAD_ODD;
258 err = phy_write(phydev, MII_88E1318S_PHY_MSCR1_REG, mscr);
262 err = phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage);
266 return m88e1121_config_aneg(phydev);
269 static int m88e1111_config_init(struct phy_device *phydev)
274 /* Enable Fiber/Copper auto selection */
275 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
276 temp &= ~MII_M1111_HWCFG_FIBER_COPPER_AUTO;
277 phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
279 temp = phy_read(phydev, MII_BMCR);
281 phy_write(phydev, MII_BMCR, temp);
283 if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
284 (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
285 (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
286 (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
288 temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
292 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
293 temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
294 } else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
295 temp &= ~MII_M1111_TX_DELAY;
296 temp |= MII_M1111_RX_DELAY;
297 } else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
298 temp &= ~MII_M1111_RX_DELAY;
299 temp |= MII_M1111_TX_DELAY;
302 err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
306 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
310 temp &= ~(MII_M1111_HWCFG_MODE_MASK);
312 if (temp & MII_M1111_HWCFG_FIBER_COPPER_RES)
313 temp |= MII_M1111_HWCFG_MODE_FIBER_RGMII;
315 temp |= MII_M1111_HWCFG_MODE_COPPER_RGMII;
317 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
322 if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
323 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
327 temp &= ~(MII_M1111_HWCFG_MODE_MASK);
328 temp |= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;
329 temp |= MII_M1111_HWCFG_FIBER_COPPER_AUTO;
331 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
336 if (phydev->interface == PHY_INTERFACE_MODE_RTBI) {
337 temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
340 temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
341 err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
345 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
348 temp &= ~(MII_M1111_HWCFG_MODE_MASK | MII_M1111_HWCFG_FIBER_COPPER_RES);
349 temp |= 0x7 | MII_M1111_HWCFG_FIBER_COPPER_AUTO;
350 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
355 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
359 temp = phy_read(phydev, MII_BMCR);
360 while (temp & BMCR_RESET);
362 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
365 temp &= ~(MII_M1111_HWCFG_MODE_MASK | MII_M1111_HWCFG_FIBER_COPPER_RES);
366 temp |= MII_M1111_HWCFG_MODE_COPPER_RTBI | MII_M1111_HWCFG_FIBER_COPPER_AUTO;
367 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
373 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
380 static int m88e1118_config_aneg(struct phy_device *phydev)
384 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
388 err = phy_write(phydev, MII_M1011_PHY_SCR,
389 MII_M1011_PHY_SCR_AUTO_CROSS);
393 err = genphy_config_aneg(phydev);
397 static int m88e1118_config_init(struct phy_device *phydev)
402 err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0002);
406 /* Enable 1000 Mbit */
407 err = phy_write(phydev, 0x15, 0x1070);
412 err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0003);
416 /* Adjust LED Control */
417 if (phydev->dev_flags & MARVELL_PHY_M1118_DNS323_LEDS)
418 err = phy_write(phydev, 0x10, 0x1100);
420 err = phy_write(phydev, 0x10, 0x021e);
425 err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0);
429 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
436 static int m88e1145_config_init(struct phy_device *phydev)
440 /* Take care of errata E0 & E1 */
441 err = phy_write(phydev, 0x1d, 0x001b);
445 err = phy_write(phydev, 0x1e, 0x418f);
449 err = phy_write(phydev, 0x1d, 0x0016);
453 err = phy_write(phydev, 0x1e, 0xa2da);
457 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
458 int temp = phy_read(phydev, MII_M1145_PHY_EXT_CR);
462 temp |= (MII_M1145_RGMII_RX_DELAY | MII_M1145_RGMII_TX_DELAY);
464 err = phy_write(phydev, MII_M1145_PHY_EXT_CR, temp);
468 if (phydev->dev_flags & MARVELL_PHY_M1145_FLAGS_RESISTANCE) {
469 err = phy_write(phydev, 0x1d, 0x0012);
473 temp = phy_read(phydev, 0x1e);
478 temp |= 2 << 9; /* 36 ohm */
479 temp |= 2 << 6; /* 39 ohm */
481 err = phy_write(phydev, 0x1e, temp);
485 err = phy_write(phydev, 0x1d, 0x3);
489 err = phy_write(phydev, 0x1e, 0x8000);
498 /* marvell_read_status
500 * Generic status code does not detect Fiber correctly!
502 * Check the link, then figure out the current state
503 * by comparing what we advertise with what the link partner
504 * advertises. Start by checking the gigabit possibilities,
505 * then move on to 10/100.
507 static int marvell_read_status(struct phy_device *phydev)
514 /* Update the link, but return if there
516 err = genphy_update_link(phydev);
520 if (AUTONEG_ENABLE == phydev->autoneg) {
521 status = phy_read(phydev, MII_M1011_PHY_STATUS);
525 lpa = phy_read(phydev, MII_LPA);
529 adv = phy_read(phydev, MII_ADVERTISE);
535 if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
536 phydev->duplex = DUPLEX_FULL;
538 phydev->duplex = DUPLEX_HALF;
540 status = status & MII_M1011_PHY_STATUS_SPD_MASK;
541 phydev->pause = phydev->asym_pause = 0;
544 case MII_M1011_PHY_STATUS_1000:
545 phydev->speed = SPEED_1000;
548 case MII_M1011_PHY_STATUS_100:
549 phydev->speed = SPEED_100;
553 phydev->speed = SPEED_10;
557 if (phydev->duplex == DUPLEX_FULL) {
558 phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
559 phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
562 int bmcr = phy_read(phydev, MII_BMCR);
567 if (bmcr & BMCR_FULLDPLX)
568 phydev->duplex = DUPLEX_FULL;
570 phydev->duplex = DUPLEX_HALF;
572 if (bmcr & BMCR_SPEED1000)
573 phydev->speed = SPEED_1000;
574 else if (bmcr & BMCR_SPEED100)
575 phydev->speed = SPEED_100;
577 phydev->speed = SPEED_10;
579 phydev->pause = phydev->asym_pause = 0;
585 static int m88e1121_did_interrupt(struct phy_device *phydev)
589 imask = phy_read(phydev, MII_M1011_IEVENT);
591 if (imask & MII_M1011_IMASK_INIT)
597 static struct phy_driver marvell_drivers[] = {
599 .phy_id = MARVELL_PHY_ID_88E1101,
600 .phy_id_mask = MARVELL_PHY_ID_MASK,
601 .name = "Marvell 88E1101",
602 .features = PHY_GBIT_FEATURES,
603 .flags = PHY_HAS_INTERRUPT,
604 .config_aneg = &marvell_config_aneg,
605 .read_status = &genphy_read_status,
606 .ack_interrupt = &marvell_ack_interrupt,
607 .config_intr = &marvell_config_intr,
608 .driver = { .owner = THIS_MODULE },
611 .phy_id = MARVELL_PHY_ID_88E1112,
612 .phy_id_mask = MARVELL_PHY_ID_MASK,
613 .name = "Marvell 88E1112",
614 .features = PHY_GBIT_FEATURES,
615 .flags = PHY_HAS_INTERRUPT,
616 .config_init = &m88e1111_config_init,
617 .config_aneg = &marvell_config_aneg,
618 .read_status = &genphy_read_status,
619 .ack_interrupt = &marvell_ack_interrupt,
620 .config_intr = &marvell_config_intr,
621 .driver = { .owner = THIS_MODULE },
624 .phy_id = MARVELL_PHY_ID_88E1111,
625 .phy_id_mask = MARVELL_PHY_ID_MASK,
626 .name = "Marvell 88E1111",
627 .features = PHY_GBIT_FEATURES,
628 .flags = PHY_HAS_INTERRUPT,
629 .config_init = &m88e1111_config_init,
630 .config_aneg = &marvell_config_aneg,
631 .read_status = &marvell_read_status,
632 .ack_interrupt = &marvell_ack_interrupt,
633 .config_intr = &marvell_config_intr,
634 .driver = { .owner = THIS_MODULE },
637 .phy_id = MARVELL_PHY_ID_88E1118,
638 .phy_id_mask = MARVELL_PHY_ID_MASK,
639 .name = "Marvell 88E1118",
640 .features = PHY_GBIT_FEATURES,
641 .flags = PHY_HAS_INTERRUPT,
642 .config_init = &m88e1118_config_init,
643 .config_aneg = &m88e1118_config_aneg,
644 .read_status = &genphy_read_status,
645 .ack_interrupt = &marvell_ack_interrupt,
646 .config_intr = &marvell_config_intr,
647 .driver = {.owner = THIS_MODULE,},
650 .phy_id = MARVELL_PHY_ID_88E1121R,
651 .phy_id_mask = MARVELL_PHY_ID_MASK,
652 .name = "Marvell 88E1121R",
653 .features = PHY_GBIT_FEATURES,
654 .flags = PHY_HAS_INTERRUPT,
655 .config_aneg = &m88e1121_config_aneg,
656 .read_status = &marvell_read_status,
657 .ack_interrupt = &marvell_ack_interrupt,
658 .config_intr = &marvell_config_intr,
659 .did_interrupt = &m88e1121_did_interrupt,
660 .driver = { .owner = THIS_MODULE },
663 .phy_id = MARVELL_PHY_ID_88E1318S,
664 .phy_id_mask = MARVELL_PHY_ID_MASK,
665 .name = "Marvell 88E1318S",
666 .features = PHY_GBIT_FEATURES,
667 .flags = PHY_HAS_INTERRUPT,
668 .config_aneg = &m88e1318_config_aneg,
669 .read_status = &marvell_read_status,
670 .ack_interrupt = &marvell_ack_interrupt,
671 .config_intr = &marvell_config_intr,
672 .did_interrupt = &m88e1121_did_interrupt,
673 .driver = { .owner = THIS_MODULE },
676 .phy_id = MARVELL_PHY_ID_88E1145,
677 .phy_id_mask = MARVELL_PHY_ID_MASK,
678 .name = "Marvell 88E1145",
679 .features = PHY_GBIT_FEATURES,
680 .flags = PHY_HAS_INTERRUPT,
681 .config_init = &m88e1145_config_init,
682 .config_aneg = &marvell_config_aneg,
683 .read_status = &genphy_read_status,
684 .ack_interrupt = &marvell_ack_interrupt,
685 .config_intr = &marvell_config_intr,
686 .driver = { .owner = THIS_MODULE },
689 .phy_id = MARVELL_PHY_ID_88E1240,
690 .phy_id_mask = MARVELL_PHY_ID_MASK,
691 .name = "Marvell 88E1240",
692 .features = PHY_GBIT_FEATURES,
693 .flags = PHY_HAS_INTERRUPT,
694 .config_init = &m88e1111_config_init,
695 .config_aneg = &marvell_config_aneg,
696 .read_status = &genphy_read_status,
697 .ack_interrupt = &marvell_ack_interrupt,
698 .config_intr = &marvell_config_intr,
699 .driver = { .owner = THIS_MODULE },
703 static int __init marvell_init(void)
708 for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++) {
709 ret = phy_driver_register(&marvell_drivers[i]);
713 phy_driver_unregister(&marvell_drivers[i]);
721 static void __exit marvell_exit(void)
725 for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++)
726 phy_driver_unregister(&marvell_drivers[i]);
729 module_init(marvell_init);
730 module_exit(marvell_exit);
732 static struct mdio_device_id __maybe_unused marvell_tbl[] = {
733 { 0x01410c60, 0xfffffff0 },
734 { 0x01410c90, 0xfffffff0 },
735 { 0x01410cc0, 0xfffffff0 },
736 { 0x01410e10, 0xfffffff0 },
737 { 0x01410cb0, 0xfffffff0 },
738 { 0x01410cd0, 0xfffffff0 },
739 { 0x01410e30, 0xfffffff0 },
740 { 0x01410e90, 0xfffffff0 },
744 MODULE_DEVICE_TABLE(mdio, marvell_tbl);