2 * Copyright (C) 2005 Freescale Semiconductor, Inc.
4 * Author: Shlomi Gridish
6 * Description: UCC GETH Driver -- PHY handling
8 * Based on 8260_io/fcc_enet.c
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.
20 #include "asm/errno.h"
21 #include "asm/immap_qe.h"
29 #if defined(CONFIG_QE)
31 #define UEC_VERBOSE_DEBUG
32 #define ugphy_printk(format, arg...) \
33 printf(format "\n", ## arg)
35 #define ugphy_dbg(format, arg...) \
36 ugphy_printk(format , ## arg)
37 #define ugphy_err(format, arg...) \
38 ugphy_printk(format , ## arg)
39 #define ugphy_info(format, arg...) \
40 ugphy_printk(format , ## arg)
41 #define ugphy_warn(format, arg...) \
42 ugphy_printk(format , ## arg)
44 #ifdef UEC_VERBOSE_DEBUG
45 #define ugphy_vdbg ugphy_dbg
47 #define ugphy_vdbg(ugeth, fmt, args...) do { } while (0)
48 #endif /* UEC_VERBOSE_DEBUG */
50 static void config_genmii_advert (struct uec_mii_info *mii_info);
51 static void genmii_setup_forced (struct uec_mii_info *mii_info);
52 static void genmii_restart_aneg (struct uec_mii_info *mii_info);
53 static int gbit_config_aneg (struct uec_mii_info *mii_info);
54 static int genmii_config_aneg (struct uec_mii_info *mii_info);
55 static int genmii_update_link (struct uec_mii_info *mii_info);
56 static int genmii_read_status (struct uec_mii_info *mii_info);
57 u16 phy_read (struct uec_mii_info *mii_info, u16 regnum);
58 void phy_write (struct uec_mii_info *mii_info, u16 regnum, u16 val);
60 /* Write value to the PHY for this device to the register at regnum, */
61 /* waiting until the write is done before it returns. All PHY */
62 /* configuration has to be done through the TSEC1 MIIM regs */
63 void uec_write_phy_reg (struct eth_device *dev, int mii_id, int regnum, int value)
65 uec_private_t *ugeth = (uec_private_t *) dev->priv;
67 enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
70 ug_regs = ugeth->uec_mii_regs;
72 /* Stop the MII management read cycle */
73 out_be32 (&ug_regs->miimcom, 0);
74 /* Setting up the MII Mangement Address Register */
75 tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
76 out_be32 (&ug_regs->miimadd, tmp_reg);
78 /* Setting up the MII Mangement Control Register with the value */
79 out_be32 (&ug_regs->miimcon, (u32) value);
82 /* Wait till MII management write is complete */
83 while ((in_be32 (&ug_regs->miimind)) & MIIMIND_BUSY);
86 /* Reads from register regnum in the PHY for device dev, */
87 /* returning the value. Clears miimcom first. All PHY */
88 /* configuration has to be done through the TSEC1 MIIM regs */
89 int uec_read_phy_reg (struct eth_device *dev, int mii_id, int regnum)
91 uec_private_t *ugeth = (uec_private_t *) dev->priv;
93 enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
97 ug_regs = ugeth->uec_mii_regs;
99 /* Setting up the MII Mangement Address Register */
100 tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
101 out_be32 (&ug_regs->miimadd, tmp_reg);
103 /* clear MII management command cycle */
104 out_be32 (&ug_regs->miimcom, 0);
107 /* Perform an MII management read cycle */
108 out_be32 (&ug_regs->miimcom, MIIMCOM_READ_CYCLE);
110 /* Wait till MII management write is complete */
111 while ((in_be32 (&ug_regs->miimind)) &
112 (MIIMIND_NOT_VALID | MIIMIND_BUSY));
114 /* Read MII management status */
115 value = (u16) in_be32 (&ug_regs->miimstat);
118 ("read wrong value : mii_id %d,mii_reg %d, base %08x",
119 mii_id, mii_reg, (u32) & (ug_regs->miimcfg));
124 void mii_clear_phy_interrupt (struct uec_mii_info *mii_info)
126 if (mii_info->phyinfo->ack_interrupt)
127 mii_info->phyinfo->ack_interrupt (mii_info);
130 void mii_configure_phy_interrupt (struct uec_mii_info *mii_info,
133 mii_info->interrupts = interrupts;
134 if (mii_info->phyinfo->config_intr)
135 mii_info->phyinfo->config_intr (mii_info);
138 /* Writes MII_ADVERTISE with the appropriate values, after
139 * sanitizing advertise to make sure only supported features
142 static void config_genmii_advert (struct uec_mii_info *mii_info)
147 /* Only allow advertising what this PHY supports */
148 mii_info->advertising &= mii_info->phyinfo->features;
149 advertise = mii_info->advertising;
151 /* Setup standard advertisement */
152 adv = phy_read (mii_info, PHY_ANAR);
153 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
154 if (advertise & ADVERTISED_10baseT_Half)
155 adv |= ADVERTISE_10HALF;
156 if (advertise & ADVERTISED_10baseT_Full)
157 adv |= ADVERTISE_10FULL;
158 if (advertise & ADVERTISED_100baseT_Half)
159 adv |= ADVERTISE_100HALF;
160 if (advertise & ADVERTISED_100baseT_Full)
161 adv |= ADVERTISE_100FULL;
162 phy_write (mii_info, PHY_ANAR, adv);
165 static void genmii_setup_forced (struct uec_mii_info *mii_info)
168 u32 features = mii_info->phyinfo->features;
170 ctrl = phy_read (mii_info, PHY_BMCR);
172 ctrl &= ~(PHY_BMCR_DPLX | PHY_BMCR_100_MBPS |
173 PHY_BMCR_1000_MBPS | PHY_BMCR_AUTON);
174 ctrl |= PHY_BMCR_RESET;
176 switch (mii_info->speed) {
178 if (features & (SUPPORTED_1000baseT_Half
179 | SUPPORTED_1000baseT_Full)) {
180 ctrl |= PHY_BMCR_1000_MBPS;
183 mii_info->speed = SPEED_100;
185 if (features & (SUPPORTED_100baseT_Half
186 | SUPPORTED_100baseT_Full)) {
187 ctrl |= PHY_BMCR_100_MBPS;
190 mii_info->speed = SPEED_10;
192 if (features & (SUPPORTED_10baseT_Half
193 | SUPPORTED_10baseT_Full))
195 default: /* Unsupported speed! */
196 ugphy_err ("%s: Bad speed!", mii_info->dev->name);
200 phy_write (mii_info, PHY_BMCR, ctrl);
203 /* Enable and Restart Autonegotiation */
204 static void genmii_restart_aneg (struct uec_mii_info *mii_info)
208 ctl = phy_read (mii_info, PHY_BMCR);
209 ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
210 phy_write (mii_info, PHY_BMCR, ctl);
213 static int gbit_config_aneg (struct uec_mii_info *mii_info)
218 if (mii_info->autoneg) {
219 /* Configure the ADVERTISE register */
220 config_genmii_advert (mii_info);
221 advertise = mii_info->advertising;
223 adv = phy_read (mii_info, MII_1000BASETCONTROL);
224 adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
225 MII_1000BASETCONTROL_HALFDUPLEXCAP);
226 if (advertise & SUPPORTED_1000baseT_Half)
227 adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
228 if (advertise & SUPPORTED_1000baseT_Full)
229 adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
230 phy_write (mii_info, MII_1000BASETCONTROL, adv);
232 /* Start/Restart aneg */
233 genmii_restart_aneg (mii_info);
235 genmii_setup_forced (mii_info);
240 static int marvell_config_aneg (struct uec_mii_info *mii_info)
242 /* The Marvell PHY has an errata which requires
243 * that certain registers get written in order
244 * to restart autonegotiation */
245 phy_write (mii_info, PHY_BMCR, PHY_BMCR_RESET);
247 phy_write (mii_info, 0x1d, 0x1f);
248 phy_write (mii_info, 0x1e, 0x200c);
249 phy_write (mii_info, 0x1d, 0x5);
250 phy_write (mii_info, 0x1e, 0);
251 phy_write (mii_info, 0x1e, 0x100);
253 gbit_config_aneg (mii_info);
258 static int genmii_config_aneg (struct uec_mii_info *mii_info)
260 if (mii_info->autoneg) {
261 config_genmii_advert (mii_info);
262 genmii_restart_aneg (mii_info);
264 genmii_setup_forced (mii_info);
269 static int genmii_update_link (struct uec_mii_info *mii_info)
273 /* Status is read once to clear old link state */
274 phy_read (mii_info, PHY_BMSR);
277 * Wait if the link is up, and autonegotiation is in progress
278 * (ie - we're capable and it's not done)
280 status = phy_read(mii_info, PHY_BMSR);
281 if ((status & PHY_BMSR_LS) && (status & PHY_BMSR_AUTN_ABLE)
282 && !(status & PHY_BMSR_AUTN_COMP)) {
285 while (!(status & PHY_BMSR_AUTN_COMP)) {
289 if (i > UGETH_AN_TIMEOUT) {
294 udelay(1000); /* 1 ms */
295 status = phy_read(mii_info, PHY_BMSR);
298 udelay(500000); /* another 500 ms (results in faster booting) */
300 if (status & PHY_BMSR_LS)
309 static int genmii_read_status (struct uec_mii_info *mii_info)
314 /* Update the link, but return if there
316 err = genmii_update_link (mii_info);
320 if (mii_info->autoneg) {
321 status = phy_read (mii_info, PHY_ANLPAR);
323 if (status & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD))
324 mii_info->duplex = DUPLEX_FULL;
326 mii_info->duplex = DUPLEX_HALF;
327 if (status & (PHY_ANLPAR_TXFD | PHY_ANLPAR_TX))
328 mii_info->speed = SPEED_100;
330 mii_info->speed = SPEED_10;
333 /* On non-aneg, we assume what we put in BMCR is the speed,
334 * though magic-aneg shouldn't prevent this case from occurring
340 static int marvell_read_status (struct uec_mii_info *mii_info)
345 /* Update the link, but return if there
347 err = genmii_update_link (mii_info);
351 /* If the link is up, read the speed and duplex */
352 /* If we aren't autonegotiating, assume speeds
354 if (mii_info->autoneg && mii_info->link) {
357 status = phy_read (mii_info, MII_M1011_PHY_SPEC_STATUS);
359 /* Get the duplexity */
360 if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
361 mii_info->duplex = DUPLEX_FULL;
363 mii_info->duplex = DUPLEX_HALF;
366 speed = status & MII_M1011_PHY_SPEC_STATUS_SPD_MASK;
368 case MII_M1011_PHY_SPEC_STATUS_1000:
369 mii_info->speed = SPEED_1000;
371 case MII_M1011_PHY_SPEC_STATUS_100:
372 mii_info->speed = SPEED_100;
375 mii_info->speed = SPEED_10;
384 static int marvell_ack_interrupt (struct uec_mii_info *mii_info)
386 /* Clear the interrupts by reading the reg */
387 phy_read (mii_info, MII_M1011_IEVENT);
392 static int marvell_config_intr (struct uec_mii_info *mii_info)
394 if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
395 phy_write (mii_info, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
397 phy_write (mii_info, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
402 static int dm9161_init (struct uec_mii_info *mii_info)
405 phy_write (mii_info, PHY_BMCR, phy_read (mii_info, PHY_BMCR) |
407 /* PHY and MAC connect */
408 phy_write (mii_info, PHY_BMCR, phy_read (mii_info, PHY_BMCR) &
411 phy_write (mii_info, MII_DM9161_SCR, MII_DM9161_SCR_INIT);
413 config_genmii_advert (mii_info);
414 /* Start/restart aneg */
415 genmii_config_aneg (mii_info);
420 static int dm9161_config_aneg (struct uec_mii_info *mii_info)
425 static int dm9161_read_status (struct uec_mii_info *mii_info)
430 /* Update the link, but return if there was an error */
431 err = genmii_update_link (mii_info);
434 /* If the link is up, read the speed and duplex
435 If we aren't autonegotiating assume speeds are as set */
436 if (mii_info->autoneg && mii_info->link) {
437 status = phy_read (mii_info, MII_DM9161_SCSR);
438 if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_100H))
439 mii_info->speed = SPEED_100;
441 mii_info->speed = SPEED_10;
443 if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_10F))
444 mii_info->duplex = DUPLEX_FULL;
446 mii_info->duplex = DUPLEX_HALF;
452 static int dm9161_ack_interrupt (struct uec_mii_info *mii_info)
454 /* Clear the interrupt by reading the reg */
455 phy_read (mii_info, MII_DM9161_INTR);
460 static int dm9161_config_intr (struct uec_mii_info *mii_info)
462 if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
463 phy_write (mii_info, MII_DM9161_INTR, MII_DM9161_INTR_INIT);
465 phy_write (mii_info, MII_DM9161_INTR, MII_DM9161_INTR_STOP);
470 static void dm9161_close (struct uec_mii_info *mii_info)
474 static struct phy_info phy_info_dm9161 = {
475 .phy_id = 0x0181b880,
476 .phy_id_mask = 0x0ffffff0,
477 .name = "Davicom DM9161E",
479 .config_aneg = dm9161_config_aneg,
480 .read_status = dm9161_read_status,
481 .close = dm9161_close,
484 static struct phy_info phy_info_dm9161a = {
485 .phy_id = 0x0181b8a0,
486 .phy_id_mask = 0x0ffffff0,
487 .name = "Davicom DM9161A",
488 .features = MII_BASIC_FEATURES,
490 .config_aneg = dm9161_config_aneg,
491 .read_status = dm9161_read_status,
492 .ack_interrupt = dm9161_ack_interrupt,
493 .config_intr = dm9161_config_intr,
494 .close = dm9161_close,
497 static struct phy_info phy_info_marvell = {
498 .phy_id = 0x01410c00,
499 .phy_id_mask = 0xffffff00,
500 .name = "Marvell 88E11x1",
501 .features = MII_GBIT_FEATURES,
502 .config_aneg = &marvell_config_aneg,
503 .read_status = &marvell_read_status,
504 .ack_interrupt = &marvell_ack_interrupt,
505 .config_intr = &marvell_config_intr,
508 static struct phy_info phy_info_genmii = {
509 .phy_id = 0x00000000,
510 .phy_id_mask = 0x00000000,
511 .name = "Generic MII",
512 .features = MII_BASIC_FEATURES,
513 .config_aneg = genmii_config_aneg,
514 .read_status = genmii_read_status,
517 static struct phy_info *phy_info[] = {
525 u16 phy_read (struct uec_mii_info *mii_info, u16 regnum)
527 return mii_info->mdio_read (mii_info->dev, mii_info->mii_id, regnum);
530 void phy_write (struct uec_mii_info *mii_info, u16 regnum, u16 val)
532 mii_info->mdio_write (mii_info->dev, mii_info->mii_id, regnum, val);
535 /* Use the PHY ID registers to determine what type of PHY is attached
536 * to device dev. return a struct phy_info structure describing that PHY
538 struct phy_info *uec_get_phy_info (struct uec_mii_info *mii_info)
543 struct phy_info *theInfo = NULL;
545 /* Grab the bits from PHYIR1, and put them in the upper half */
546 phy_reg = phy_read (mii_info, PHY_PHYIDR1);
547 phy_ID = (phy_reg & 0xffff) << 16;
549 /* Grab the bits from PHYIR2, and put them in the lower half */
550 phy_reg = phy_read (mii_info, PHY_PHYIDR2);
551 phy_ID |= (phy_reg & 0xffff);
553 /* loop through all the known PHY types, and find one that */
554 /* matches the ID we read from the PHY. */
555 for (i = 0; phy_info[i]; i++)
556 if (phy_info[i]->phy_id ==
557 (phy_ID & phy_info[i]->phy_id_mask)) {
558 theInfo = phy_info[i];
562 /* This shouldn't happen, as we have generic PHY support */
563 if (theInfo == NULL) {
564 ugphy_info ("UEC: PHY id %x is not supported!", phy_ID);
567 ugphy_info ("UEC: PHY is %s (%x)", theInfo->name, phy_ID);
573 void marvell_phy_interface_mode (struct eth_device *dev,
574 enet_interface_e mode)
576 uec_private_t *uec = (uec_private_t *) dev->priv;
577 struct uec_mii_info *mii_info;
579 if (!uec->mii_info) {
580 printf ("%s: the PHY not intialized\n", __FUNCTION__);
583 mii_info = uec->mii_info;
585 if (mode == ENET_100_RGMII) {
586 phy_write (mii_info, 0x00, 0x9140);
587 phy_write (mii_info, 0x1d, 0x001f);
588 phy_write (mii_info, 0x1e, 0x200c);
589 phy_write (mii_info, 0x1d, 0x0005);
590 phy_write (mii_info, 0x1e, 0x0000);
591 phy_write (mii_info, 0x1e, 0x0100);
592 phy_write (mii_info, 0x09, 0x0e00);
593 phy_write (mii_info, 0x04, 0x01e1);
594 phy_write (mii_info, 0x00, 0x9140);
595 phy_write (mii_info, 0x00, 0x1000);
597 phy_write (mii_info, 0x00, 0x2900);
598 phy_write (mii_info, 0x14, 0x0cd2);
599 phy_write (mii_info, 0x00, 0xa100);
600 phy_write (mii_info, 0x09, 0x0000);
601 phy_write (mii_info, 0x1b, 0x800b);
602 phy_write (mii_info, 0x04, 0x05e1);
603 phy_write (mii_info, 0x00, 0xa100);
604 phy_write (mii_info, 0x00, 0x2100);
606 } else if (mode == ENET_10_RGMII) {
607 phy_write (mii_info, 0x14, 0x8e40);
608 phy_write (mii_info, 0x1b, 0x800b);
609 phy_write (mii_info, 0x14, 0x0c82);
610 phy_write (mii_info, 0x00, 0x8100);
615 void change_phy_interface_mode (struct eth_device *dev, enet_interface_e mode)
617 #ifdef CONFIG_PHY_MODE_NEED_CHANGE
618 marvell_phy_interface_mode (dev, mode);
621 #endif /* CONFIG_QE */