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_M1011_IEVENT 0x13
39 #define MII_M1011_IEVENT_CLEAR 0x0000
41 #define MII_M1011_IMASK 0x12
42 #define MII_M1011_IMASK_INIT 0x6400
43 #define MII_M1011_IMASK_CLEAR 0x0000
45 #define MII_M1011_PHY_SCR 0x10
46 #define MII_M1011_PHY_SCR_AUTO_CROSS 0x0060
48 #define MII_M1145_PHY_EXT_CR 0x14
49 #define MII_M1145_RGMII_RX_DELAY 0x0080
50 #define MII_M1145_RGMII_TX_DELAY 0x0002
52 #define MII_M1111_PHY_LED_CONTROL 0x18
53 #define MII_M1111_PHY_LED_DIRECT 0x4100
54 #define MII_M1111_PHY_LED_COMBINE 0x411c
55 #define MII_M1111_PHY_EXT_CR 0x14
56 #define MII_M1111_RX_DELAY 0x80
57 #define MII_M1111_TX_DELAY 0x2
58 #define MII_M1111_PHY_EXT_SR 0x1b
60 #define MII_M1111_HWCFG_MODE_MASK 0xf
61 #define MII_M1111_HWCFG_MODE_COPPER_RGMII 0xb
62 #define MII_M1111_HWCFG_MODE_FIBER_RGMII 0x3
63 #define MII_M1111_HWCFG_MODE_SGMII_NO_CLK 0x4
64 #define MII_M1111_HWCFG_MODE_COPPER_RTBI 0x9
65 #define MII_M1111_HWCFG_FIBER_COPPER_AUTO 0x8000
66 #define MII_M1111_HWCFG_FIBER_COPPER_RES 0x2000
68 #define MII_M1111_COPPER 0
69 #define MII_M1111_FIBER 1
71 #define MII_88E1121_PHY_MSCR_PAGE 2
72 #define MII_88E1121_PHY_MSCR_REG 21
73 #define MII_88E1121_PHY_MSCR_RX_DELAY BIT(5)
74 #define MII_88E1121_PHY_MSCR_TX_DELAY BIT(4)
75 #define MII_88E1121_PHY_MSCR_DELAY_MASK (~(0x3 << 4))
77 #define MII_88EC048_PHY_MSCR1_REG 16
78 #define MII_88EC048_PHY_MSCR1_PAD_ODD BIT(6)
80 #define MII_88E1121_PHY_LED_CTRL 16
81 #define MII_88E1121_PHY_LED_PAGE 3
82 #define MII_88E1121_PHY_LED_DEF 0x0030
83 #define MII_88E1121_PHY_PAGE 22
85 #define MII_M1011_PHY_STATUS 0x11
86 #define MII_M1011_PHY_STATUS_1000 0x8000
87 #define MII_M1011_PHY_STATUS_100 0x4000
88 #define MII_M1011_PHY_STATUS_SPD_MASK 0xc000
89 #define MII_M1011_PHY_STATUS_FULLDUPLEX 0x2000
90 #define MII_M1011_PHY_STATUS_RESOLVED 0x0800
91 #define MII_M1011_PHY_STATUS_LINK 0x0400
94 MODULE_DESCRIPTION("Marvell PHY driver");
95 MODULE_AUTHOR("Andy Fleming");
96 MODULE_LICENSE("GPL");
98 static int marvell_ack_interrupt(struct phy_device *phydev)
102 /* Clear the interrupts by reading the reg */
103 err = phy_read(phydev, MII_M1011_IEVENT);
111 static int marvell_config_intr(struct phy_device *phydev)
115 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
116 err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
118 err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
123 static int marvell_config_aneg(struct phy_device *phydev)
127 /* The Marvell PHY has an errata which requires
128 * that certain registers get written in order
129 * to restart autonegotiation */
130 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
135 err = phy_write(phydev, 0x1d, 0x1f);
139 err = phy_write(phydev, 0x1e, 0x200c);
143 err = phy_write(phydev, 0x1d, 0x5);
147 err = phy_write(phydev, 0x1e, 0);
151 err = phy_write(phydev, 0x1e, 0x100);
155 err = phy_write(phydev, MII_M1011_PHY_SCR,
156 MII_M1011_PHY_SCR_AUTO_CROSS);
160 err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL,
161 MII_M1111_PHY_LED_DIRECT);
165 err = genphy_config_aneg(phydev);
169 if (phydev->autoneg != AUTONEG_ENABLE) {
173 * A write to speed/duplex bits (that is performed by
174 * genphy_config_aneg() call above) must be followed by
175 * a software reset. Otherwise, the write has no effect.
177 bmcr = phy_read(phydev, MII_BMCR);
181 err = phy_write(phydev, MII_BMCR, bmcr | BMCR_RESET);
189 static int m88e1121_config_aneg(struct phy_device *phydev)
191 int err, oldpage, mscr;
193 oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE);
195 err = phy_write(phydev, MII_88E1121_PHY_PAGE,
196 MII_88E1121_PHY_MSCR_PAGE);
199 mscr = phy_read(phydev, MII_88E1121_PHY_MSCR_REG) &
200 MII_88E1121_PHY_MSCR_DELAY_MASK;
202 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
203 mscr |= (MII_88E1121_PHY_MSCR_RX_DELAY |
204 MII_88E1121_PHY_MSCR_TX_DELAY);
205 else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
206 mscr |= MII_88E1121_PHY_MSCR_RX_DELAY;
207 else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
208 mscr |= MII_88E1121_PHY_MSCR_TX_DELAY;
210 err = phy_write(phydev, MII_88E1121_PHY_MSCR_REG, mscr);
214 phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage);
216 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
220 err = phy_write(phydev, MII_M1011_PHY_SCR,
221 MII_M1011_PHY_SCR_AUTO_CROSS);
225 oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE);
227 phy_write(phydev, MII_88E1121_PHY_PAGE, MII_88E1121_PHY_LED_PAGE);
228 phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF);
229 phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage);
231 err = genphy_config_aneg(phydev);
236 static int m88ec048_config_aneg(struct phy_device *phydev)
238 int err, oldpage, mscr;
240 oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE);
242 err = phy_write(phydev, MII_88E1121_PHY_PAGE,
243 MII_88E1121_PHY_MSCR_PAGE);
247 mscr = phy_read(phydev, MII_88EC048_PHY_MSCR1_REG);
248 mscr |= MII_88EC048_PHY_MSCR1_PAD_ODD;
250 err = phy_write(phydev, MII_88E1121_PHY_MSCR_REG, mscr);
254 err = phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage);
258 return m88e1121_config_aneg(phydev);
261 static int m88e1111_config_init(struct phy_device *phydev)
266 /* Enable Fiber/Copper auto selection */
267 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
268 temp &= ~MII_M1111_HWCFG_FIBER_COPPER_AUTO;
269 phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
271 temp = phy_read(phydev, MII_BMCR);
273 phy_write(phydev, MII_BMCR, temp);
275 if ((phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
276 (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
277 (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
278 (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
280 temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
284 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
285 temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
286 } else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
287 temp &= ~MII_M1111_TX_DELAY;
288 temp |= MII_M1111_RX_DELAY;
289 } else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
290 temp &= ~MII_M1111_RX_DELAY;
291 temp |= MII_M1111_TX_DELAY;
294 err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
298 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
302 temp &= ~(MII_M1111_HWCFG_MODE_MASK);
304 if (temp & MII_M1111_HWCFG_FIBER_COPPER_RES)
305 temp |= MII_M1111_HWCFG_MODE_FIBER_RGMII;
307 temp |= MII_M1111_HWCFG_MODE_COPPER_RGMII;
309 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
314 if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
315 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
319 temp &= ~(MII_M1111_HWCFG_MODE_MASK);
320 temp |= MII_M1111_HWCFG_MODE_SGMII_NO_CLK;
321 temp |= MII_M1111_HWCFG_FIBER_COPPER_AUTO;
323 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
328 if (phydev->interface == PHY_INTERFACE_MODE_RTBI) {
329 temp = phy_read(phydev, MII_M1111_PHY_EXT_CR);
332 temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
333 err = phy_write(phydev, MII_M1111_PHY_EXT_CR, temp);
337 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
340 temp &= ~(MII_M1111_HWCFG_MODE_MASK | MII_M1111_HWCFG_FIBER_COPPER_RES);
341 temp |= 0x7 | MII_M1111_HWCFG_FIBER_COPPER_AUTO;
342 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
347 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
351 temp = phy_read(phydev, MII_BMCR);
352 while (temp & BMCR_RESET);
354 temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
357 temp &= ~(MII_M1111_HWCFG_MODE_MASK | MII_M1111_HWCFG_FIBER_COPPER_RES);
358 temp |= MII_M1111_HWCFG_MODE_COPPER_RTBI | MII_M1111_HWCFG_FIBER_COPPER_AUTO;
359 err = phy_write(phydev, MII_M1111_PHY_EXT_SR, temp);
365 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
372 static int m88e1118_config_aneg(struct phy_device *phydev)
376 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
380 err = phy_write(phydev, MII_M1011_PHY_SCR,
381 MII_M1011_PHY_SCR_AUTO_CROSS);
385 err = genphy_config_aneg(phydev);
389 static int m88e1118_config_init(struct phy_device *phydev)
394 err = phy_write(phydev, 0x16, 0x0002);
398 /* Enable 1000 Mbit */
399 err = phy_write(phydev, 0x15, 0x1070);
404 err = phy_write(phydev, 0x16, 0x0003);
408 /* Adjust LED Control */
409 if (phydev->dev_flags & MARVELL_PHY_M1118_DNS323_LEDS)
410 err = phy_write(phydev, 0x10, 0x1100);
412 err = phy_write(phydev, 0x10, 0x021e);
417 err = phy_write(phydev, 0x16, 0x0);
421 err = phy_write(phydev, MII_BMCR, BMCR_RESET);
428 static int m88e1145_config_init(struct phy_device *phydev)
432 /* Take care of errata E0 & E1 */
433 err = phy_write(phydev, 0x1d, 0x001b);
437 err = phy_write(phydev, 0x1e, 0x418f);
441 err = phy_write(phydev, 0x1d, 0x0016);
445 err = phy_write(phydev, 0x1e, 0xa2da);
449 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) {
450 int temp = phy_read(phydev, MII_M1145_PHY_EXT_CR);
454 temp |= (MII_M1145_RGMII_RX_DELAY | MII_M1145_RGMII_TX_DELAY);
456 err = phy_write(phydev, MII_M1145_PHY_EXT_CR, temp);
460 if (phydev->dev_flags & MARVELL_PHY_M1145_FLAGS_RESISTANCE) {
461 err = phy_write(phydev, 0x1d, 0x0012);
465 temp = phy_read(phydev, 0x1e);
470 temp |= 2 << 9; /* 36 ohm */
471 temp |= 2 << 6; /* 39 ohm */
473 err = phy_write(phydev, 0x1e, temp);
477 err = phy_write(phydev, 0x1d, 0x3);
481 err = phy_write(phydev, 0x1e, 0x8000);
490 /* marvell_read_status
492 * Generic status code does not detect Fiber correctly!
494 * Check the link, then figure out the current state
495 * by comparing what we advertise with what the link partner
496 * advertises. Start by checking the gigabit possibilities,
497 * then move on to 10/100.
499 static int marvell_read_status(struct phy_device *phydev)
506 /* Update the link, but return if there
508 err = genphy_update_link(phydev);
512 if (AUTONEG_ENABLE == phydev->autoneg) {
513 status = phy_read(phydev, MII_M1011_PHY_STATUS);
517 lpa = phy_read(phydev, MII_LPA);
521 adv = phy_read(phydev, MII_ADVERTISE);
527 if (status & MII_M1011_PHY_STATUS_FULLDUPLEX)
528 phydev->duplex = DUPLEX_FULL;
530 phydev->duplex = DUPLEX_HALF;
532 status = status & MII_M1011_PHY_STATUS_SPD_MASK;
533 phydev->pause = phydev->asym_pause = 0;
536 case MII_M1011_PHY_STATUS_1000:
537 phydev->speed = SPEED_1000;
540 case MII_M1011_PHY_STATUS_100:
541 phydev->speed = SPEED_100;
545 phydev->speed = SPEED_10;
549 if (phydev->duplex == DUPLEX_FULL) {
550 phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
551 phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
554 int bmcr = phy_read(phydev, MII_BMCR);
559 if (bmcr & BMCR_FULLDPLX)
560 phydev->duplex = DUPLEX_FULL;
562 phydev->duplex = DUPLEX_HALF;
564 if (bmcr & BMCR_SPEED1000)
565 phydev->speed = SPEED_1000;
566 else if (bmcr & BMCR_SPEED100)
567 phydev->speed = SPEED_100;
569 phydev->speed = SPEED_10;
571 phydev->pause = phydev->asym_pause = 0;
577 static int m88e1121_did_interrupt(struct phy_device *phydev)
581 imask = phy_read(phydev, MII_M1011_IEVENT);
583 if (imask & MII_M1011_IMASK_INIT)
589 static struct phy_driver marvell_drivers[] = {
591 .phy_id = MARVELL_PHY_ID_88E1101,
592 .phy_id_mask = MARVELL_PHY_ID_MASK,
593 .name = "Marvell 88E1101",
594 .features = PHY_GBIT_FEATURES,
595 .flags = PHY_HAS_INTERRUPT,
596 .config_aneg = &marvell_config_aneg,
597 .read_status = &genphy_read_status,
598 .ack_interrupt = &marvell_ack_interrupt,
599 .config_intr = &marvell_config_intr,
600 .driver = { .owner = THIS_MODULE },
603 .phy_id = MARVELL_PHY_ID_88E1112,
604 .phy_id_mask = MARVELL_PHY_ID_MASK,
605 .name = "Marvell 88E1112",
606 .features = PHY_GBIT_FEATURES,
607 .flags = PHY_HAS_INTERRUPT,
608 .config_init = &m88e1111_config_init,
609 .config_aneg = &marvell_config_aneg,
610 .read_status = &genphy_read_status,
611 .ack_interrupt = &marvell_ack_interrupt,
612 .config_intr = &marvell_config_intr,
613 .driver = { .owner = THIS_MODULE },
616 .phy_id = MARVELL_PHY_ID_88E1111,
617 .phy_id_mask = MARVELL_PHY_ID_MASK,
618 .name = "Marvell 88E1111",
619 .features = PHY_GBIT_FEATURES,
620 .flags = PHY_HAS_INTERRUPT,
621 .config_init = &m88e1111_config_init,
622 .config_aneg = &marvell_config_aneg,
623 .read_status = &marvell_read_status,
624 .ack_interrupt = &marvell_ack_interrupt,
625 .config_intr = &marvell_config_intr,
626 .driver = { .owner = THIS_MODULE },
629 .phy_id = MARVELL_PHY_ID_88E1118,
630 .phy_id_mask = MARVELL_PHY_ID_MASK,
631 .name = "Marvell 88E1118",
632 .features = PHY_GBIT_FEATURES,
633 .flags = PHY_HAS_INTERRUPT,
634 .config_init = &m88e1118_config_init,
635 .config_aneg = &m88e1118_config_aneg,
636 .read_status = &genphy_read_status,
637 .ack_interrupt = &marvell_ack_interrupt,
638 .config_intr = &marvell_config_intr,
639 .driver = {.owner = THIS_MODULE,},
642 .phy_id = MARVELL_PHY_ID_88E1121R,
643 .phy_id_mask = MARVELL_PHY_ID_MASK,
644 .name = "Marvell 88E1121R",
645 .features = PHY_GBIT_FEATURES,
646 .flags = PHY_HAS_INTERRUPT,
647 .config_aneg = &m88e1121_config_aneg,
648 .read_status = &marvell_read_status,
649 .ack_interrupt = &marvell_ack_interrupt,
650 .config_intr = &marvell_config_intr,
651 .did_interrupt = &m88e1121_did_interrupt,
652 .driver = { .owner = THIS_MODULE },
655 .phy_id = MARVELL_PHY_ID_88EC048,
656 .phy_id_mask = MARVELL_PHY_ID_MASK,
657 .name = "Marvell 88EC048",
658 .features = PHY_GBIT_FEATURES,
659 .flags = PHY_HAS_INTERRUPT,
660 .config_aneg = &m88ec048_config_aneg,
661 .read_status = &marvell_read_status,
662 .ack_interrupt = &marvell_ack_interrupt,
663 .config_intr = &marvell_config_intr,
664 .did_interrupt = &m88e1121_did_interrupt,
665 .driver = { .owner = THIS_MODULE },
668 .phy_id = MARVELL_PHY_ID_88E1145,
669 .phy_id_mask = MARVELL_PHY_ID_MASK,
670 .name = "Marvell 88E1145",
671 .features = PHY_GBIT_FEATURES,
672 .flags = PHY_HAS_INTERRUPT,
673 .config_init = &m88e1145_config_init,
674 .config_aneg = &marvell_config_aneg,
675 .read_status = &genphy_read_status,
676 .ack_interrupt = &marvell_ack_interrupt,
677 .config_intr = &marvell_config_intr,
678 .driver = { .owner = THIS_MODULE },
681 .phy_id = MARVELL_PHY_ID_88E1240,
682 .phy_id_mask = MARVELL_PHY_ID_MASK,
683 .name = "Marvell 88E1240",
684 .features = PHY_GBIT_FEATURES,
685 .flags = PHY_HAS_INTERRUPT,
686 .config_init = &m88e1111_config_init,
687 .config_aneg = &marvell_config_aneg,
688 .read_status = &genphy_read_status,
689 .ack_interrupt = &marvell_ack_interrupt,
690 .config_intr = &marvell_config_intr,
691 .driver = { .owner = THIS_MODULE },
695 static int __init marvell_init(void)
700 for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++) {
701 ret = phy_driver_register(&marvell_drivers[i]);
705 phy_driver_unregister(&marvell_drivers[i]);
713 static void __exit marvell_exit(void)
717 for (i = 0; i < ARRAY_SIZE(marvell_drivers); i++)
718 phy_driver_unregister(&marvell_drivers[i]);
721 module_init(marvell_init);
722 module_exit(marvell_exit);
724 static struct mdio_device_id marvell_tbl[] = {
725 { 0x01410c60, 0xfffffff0 },
726 { 0x01410c90, 0xfffffff0 },
727 { 0x01410cc0, 0xfffffff0 },
728 { 0x01410e10, 0xfffffff0 },
729 { 0x01410cb0, 0xfffffff0 },
730 { 0x01410cd0, 0xfffffff0 },
731 { 0x01410e30, 0xfffffff0 },
732 { 0x01410e90, 0xfffffff0 },
736 MODULE_DEVICE_TABLE(mdio, marvell_tbl);