drivers/net/ucc_geth_phy.c

   1 /*
   2  * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
   3  *
   4  * Author: Shlomi Gridish <gridish@freescale.com>
   5  *
   6  * Description:
   7  * UCC GETH Driver -- PHY handling
   8  *
   9  * Changelog:
  10  * Jun 28, 2006 Li Yang <LeoLi@freescale.com>
  11  * - Rearrange code and style fixes
  12  *
  13  * This program is free software; you can redistribute  it and/or modify it
  14  * under  the terms of  the GNU General  Public License as published by the
  15  * Free Software Foundation;  either version 2 of the  License, or (at your
  16  * option) any later version.
  17  *
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/string.h>
  22 #include <linux/errno.h>
  23 #include <linux/slab.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/init.h>
  26 #include <linux/delay.h>
  27 #include <linux/netdevice.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/skbuff.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/mm.h>
  32 #include <linux/module.h>
  33 #include <linux/version.h>
  34 #include <linux/crc32.h>
  35 #include <linux/mii.h>
  36 #include <linux/ethtool.h>
  37
  38 #include <asm/io.h>
  39 #include <asm/irq.h>
  40 #include <asm/uaccess.h>
  41
  42 #include "ucc_geth.h"
  43 #include "ucc_geth_phy.h"
  44
  45 #define ugphy_printk(level, format, arg...)  \
  46         printk(level format "\n", ## arg)
  47
  48 #define ugphy_dbg(format, arg...)            \
  49         ugphy_printk(KERN_DEBUG, format , ## arg)
  50 #define ugphy_err(format, arg...)            \
  51         ugphy_printk(KERN_ERR, format , ## arg)
  52 #define ugphy_info(format, arg...)           \
  53         ugphy_printk(KERN_INFO, format , ## arg)
  54 #define ugphy_warn(format, arg...)           \
  55         ugphy_printk(KERN_WARNING, format , ## arg)
  56
  57 #ifdef UGETH_VERBOSE_DEBUG
  58 #define ugphy_vdbg ugphy_dbg
  59 #else
  60 #define ugphy_vdbg(fmt, args...) do { } while (0)
  61 #endif                          /* UGETH_VERBOSE_DEBUG */
  62
  63 static void config_genmii_advert(struct ugeth_mii_info *mii_info);
  64 static void genmii_setup_forced(struct ugeth_mii_info *mii_info);
  65 static void genmii_restart_aneg(struct ugeth_mii_info *mii_info);
  66 static int gbit_config_aneg(struct ugeth_mii_info *mii_info);
  67 static int genmii_config_aneg(struct ugeth_mii_info *mii_info);
  68 static int genmii_update_link(struct ugeth_mii_info *mii_info);
  69 static int genmii_read_status(struct ugeth_mii_info *mii_info);
  70
  71 static u16 ucc_geth_phy_read(struct ugeth_mii_info *mii_info, u16 regnum)
  72 {
  73         u16 retval;
  74         unsigned long flags;
  75
  76         ugphy_vdbg("%s: IN", __FUNCTION__);
  77
  78         spin_lock_irqsave(&mii_info->mdio_lock, flags);
  79         retval = mii_info->mdio_read(mii_info->dev, mii_info->mii_id, regnum);
  80         spin_unlock_irqrestore(&mii_info->mdio_lock, flags);
  81
  82         return retval;
  83 }
  84
  85 static void ucc_geth_phy_write(struct ugeth_mii_info *mii_info, u16 regnum, u16 val)
  86 {
  87         unsigned long flags;
  88
  89         ugphy_vdbg("%s: IN", __FUNCTION__);
  90
  91         spin_lock_irqsave(&mii_info->mdio_lock, flags);
  92         mii_info->mdio_write(mii_info->dev, mii_info->mii_id, regnum, val);
  93         spin_unlock_irqrestore(&mii_info->mdio_lock, flags);
  94 }
  95
  96 /* Write value to the PHY for this device to the register at regnum, */
  97 /* waiting until the write is done before it returns.  All PHY */
  98 /* configuration has to be done through the TSEC1 MIIM regs */
  99 void write_phy_reg(struct net_device *dev, int mii_id, int regnum, int value)
 100 {
 101         struct ucc_geth_private *ugeth = netdev_priv(dev);
 102         struct ucc_mii_mng *mii_regs;
 103         enum enet_tbi_mii_reg mii_reg = (enum enet_tbi_mii_reg) regnum;
 104         u32 tmp_reg;
 105
 106         ugphy_vdbg("%s: IN", __FUNCTION__);
 107
 108         spin_lock_irq(&ugeth->lock);
 109
 110         mii_regs = ugeth->mii_info->mii_regs;
 111
 112         /* Set this UCC to be the master of the MII managment */
 113         ucc_set_qe_mux_mii_mng(ugeth->ug_info->uf_info.ucc_num);
 114
 115         /* Stop the MII management read cycle */
 116         out_be32(&mii_regs->miimcom, 0);
 117         /* Setting up the MII Mangement Address Register */
 118         tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
 119         out_be32(&mii_regs->miimadd, tmp_reg);
 120
 121         /* Setting up the MII Mangement Control Register with the value */
 122         out_be32(&mii_regs->miimcon, (u32) value);
 123
 124         /* Wait till MII management write is complete */
 125         while ((in_be32(&mii_regs->miimind)) & MIIMIND_BUSY)
 126                 cpu_relax();
 127
 128         spin_unlock_irq(&ugeth->lock);
 129
 130         udelay(10000);
 131 }
 132
 133 /* Reads from register regnum in the PHY for device dev, */
 134 /* returning the value.  Clears miimcom first.  All PHY */
 135 /* configuration has to be done through the TSEC1 MIIM regs */
 136 int read_phy_reg(struct net_device *dev, int mii_id, int regnum)
 137 {
 138         struct ucc_geth_private *ugeth = netdev_priv(dev);
 139         struct ucc_mii_mng *mii_regs;
 140         enum enet_tbi_mii_reg mii_reg = (enum enet_tbi_mii_reg) regnum;
 141         u32 tmp_reg;
 142         u16 value;
 143
 144         ugphy_vdbg("%s: IN", __FUNCTION__);
 145
 146         spin_lock_irq(&ugeth->lock);
 147
 148         mii_regs = ugeth->mii_info->mii_regs;
 149
 150         /* Setting up the MII Mangement Address Register */
 151         tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
 152         out_be32(&mii_regs->miimadd, tmp_reg);
 153
 154         /* Perform an MII management read cycle */
 155         out_be32(&mii_regs->miimcom, MIIMCOM_READ_CYCLE);
 156
 157         /* Wait till MII management write is complete */
 158         while ((in_be32(&mii_regs->miimind)) & MIIMIND_BUSY)
 159                 cpu_relax();
 160
 161         udelay(10000);
 162
 163         /* Read MII management status  */
 164         value = (u16) in_be32(&mii_regs->miimstat);
 165         out_be32(&mii_regs->miimcom, 0);
 166         if (value == 0xffff)
 167                 ugphy_warn("read wrong value : mii_id %d,mii_reg %d, base %08x",
 168                            mii_id, mii_reg, (u32) & (mii_regs->miimcfg));
 169
 170         spin_unlock_irq(&ugeth->lock);
 171
 172         return (value);
 173 }
 174
 175 void mii_clear_phy_interrupt(struct ugeth_mii_info *mii_info)
 176 {
 177         ugphy_vdbg("%s: IN", __FUNCTION__);
 178
 179         if (mii_info->phyinfo->ack_interrupt)
 180                 mii_info->phyinfo->ack_interrupt(mii_info);
 181 }
 182
 183 void mii_configure_phy_interrupt(struct ugeth_mii_info *mii_info,
 184                                  u32 interrupts)
 185 {
 186         ugphy_vdbg("%s: IN", __FUNCTION__);
 187
 188         mii_info->interrupts = interrupts;
 189         if (mii_info->phyinfo->config_intr)
 190                 mii_info->phyinfo->config_intr(mii_info);
 191 }
 192
 193 /* Writes MII_ADVERTISE with the appropriate values, after
 194  * sanitizing advertise to make sure only supported features
 195  * are advertised
 196  */
 197 static void config_genmii_advert(struct ugeth_mii_info *mii_info)
 198 {
 199         u32 advertise;
 200         u16 adv;
 201
 202         ugphy_vdbg("%s: IN", __FUNCTION__);
 203
 204         /* Only allow advertising what this PHY supports */
 205         mii_info->advertising &= mii_info->phyinfo->features;
 206         advertise = mii_info->advertising;
 207
 208         /* Setup standard advertisement */
 209         adv = ucc_geth_phy_read(mii_info, MII_ADVERTISE);
 210         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
 211         if (advertise & ADVERTISED_10baseT_Half)
 212                 adv |= ADVERTISE_10HALF;
 213         if (advertise & ADVERTISED_10baseT_Full)
 214                 adv |= ADVERTISE_10FULL;
 215         if (advertise & ADVERTISED_100baseT_Half)
 216                 adv |= ADVERTISE_100HALF;
 217         if (advertise & ADVERTISED_100baseT_Full)
 218                 adv |= ADVERTISE_100FULL;
 219         ucc_geth_phy_write(mii_info, MII_ADVERTISE, adv);
 220 }
 221
 222 static void genmii_setup_forced(struct ugeth_mii_info *mii_info)
 223 {
 224         u16 ctrl;
 225         u32 features = mii_info->phyinfo->features;
 226
 227         ugphy_vdbg("%s: IN", __FUNCTION__);
 228
 229         ctrl = ucc_geth_phy_read(mii_info, MII_BMCR);
 230
 231         ctrl &=
 232             ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_ANENABLE);
 233         ctrl |= BMCR_RESET;
 234
 235         switch (mii_info->speed) {
 236         case SPEED_1000:
 237                 if (features & (SUPPORTED_1000baseT_Half
 238                                 | SUPPORTED_1000baseT_Full)) {
 239                         ctrl |= BMCR_SPEED1000;
 240                         break;
 241                 }
 242                 mii_info->speed = SPEED_100;
 243         case SPEED_100:
 244                 if (features & (SUPPORTED_100baseT_Half
 245                                 | SUPPORTED_100baseT_Full)) {
 246                         ctrl |= BMCR_SPEED100;
 247                         break;
 248                 }
 249                 mii_info->speed = SPEED_10;
 250         case SPEED_10:
 251                 if (features & (SUPPORTED_10baseT_Half
 252                                 | SUPPORTED_10baseT_Full))
 253                         break;
 254         default:                /* Unsupported speed! */
 255                 ugphy_err("%s: Bad speed!", mii_info->dev->name);
 256                 break;
 257         }
 258
 259         ucc_geth_phy_write(mii_info, MII_BMCR, ctrl);
 260 }
 261
 262 /* Enable and Restart Autonegotiation */
 263 static void genmii_restart_aneg(struct ugeth_mii_info *mii_info)
 264 {
 265         u16 ctl;
 266
 267         ugphy_vdbg("%s: IN", __FUNCTION__);
 268
 269         ctl = ucc_geth_phy_read(mii_info, MII_BMCR);
 270         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
 271         ucc_geth_phy_write(mii_info, MII_BMCR, ctl);
 272 }
 273
 274 static int gbit_config_aneg(struct ugeth_mii_info *mii_info)
 275 {
 276         u16 adv;
 277         u32 advertise;
 278
 279         ugphy_vdbg("%s: IN", __FUNCTION__);
 280
 281         if (mii_info->autoneg) {
 282                 /* Configure the ADVERTISE register */
 283                 config_genmii_advert(mii_info);
 284                 advertise = mii_info->advertising;
 285
 286                 adv = ucc_geth_phy_read(mii_info, MII_1000BASETCONTROL);
 287                 adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
 288                          MII_1000BASETCONTROL_HALFDUPLEXCAP);
 289                 if (advertise & SUPPORTED_1000baseT_Half)
 290                         adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
 291                 if (advertise & SUPPORTED_1000baseT_Full)
 292                         adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
 293                 ucc_geth_phy_write(mii_info, MII_1000BASETCONTROL, adv);
 294
 295                 /* Start/Restart aneg */
 296                 genmii_restart_aneg(mii_info);
 297         } else
 298                 genmii_setup_forced(mii_info);
 299
 300         return 0;
 301 }
 302
 303 static int genmii_config_aneg(struct ugeth_mii_info *mii_info)
 304 {
 305         ugphy_vdbg("%s: IN", __FUNCTION__);
 306
 307         if (mii_info->autoneg) {
 308                 config_genmii_advert(mii_info);
 309                 genmii_restart_aneg(mii_info);
 310         } else
 311                 genmii_setup_forced(mii_info);
 312
 313         return 0;
 314 }
 315
 316 static int genmii_update_link(struct ugeth_mii_info *mii_info)
 317 {
 318         u16 status;
 319
 320         ugphy_vdbg("%s: IN", __FUNCTION__);
 321
 322         /* Do a fake read */
 323         ucc_geth_phy_read(mii_info, MII_BMSR);
 324
 325         /* Read link and autonegotiation status */
 326         status = ucc_geth_phy_read(mii_info, MII_BMSR);
 327         if ((status & BMSR_LSTATUS) == 0)
 328                 mii_info->link = 0;
 329         else
 330                 mii_info->link = 1;
 331
 332         /* If we are autonegotiating, and not done,
 333          * return an error */
 334         if (mii_info->autoneg && !(status & BMSR_ANEGCOMPLETE))
 335                 return -EAGAIN;
 336
 337         return 0;
 338 }
 339
 340 static int genmii_read_status(struct ugeth_mii_info *mii_info)
 341 {
 342         u16 status;
 343         int err;
 344
 345         ugphy_vdbg("%s: IN", __FUNCTION__);
 346
 347         /* Update the link, but return if there
 348          * was an error */
 349         err = genmii_update_link(mii_info);
 350         if (err)
 351                 return err;
 352
 353         if (mii_info->autoneg) {
 354                 status = ucc_geth_phy_read(mii_info, MII_LPA);
 355
 356                 if (status & (LPA_10FULL | LPA_100FULL))
 357                         mii_info->duplex = DUPLEX_FULL;
 358                 else
 359                         mii_info->duplex = DUPLEX_HALF;
 360                 if (status & (LPA_100FULL | LPA_100HALF))
 361                         mii_info->speed = SPEED_100;
 362                 else
 363                         mii_info->speed = SPEED_10;
 364                 mii_info->pause = 0;
 365         }
 366         /* On non-aneg, we assume what we put in BMCR is the speed,
 367          * though magic-aneg shouldn't prevent this case from occurring
 368          */
 369
 370         return 0;
 371 }
 372
 373 static int marvell_init(struct ugeth_mii_info *mii_info)
 374 {
 375         ugphy_vdbg("%s: IN", __FUNCTION__);
 376
 377         ucc_geth_phy_write(mii_info, 0x14, 0x0cd2);
 378         ucc_geth_phy_write(mii_info, 0x1b,
 379                 (ucc_geth_phy_read(mii_info, 0x1b) & ~0x000f) | 0x000b);
 380         ucc_geth_phy_write(mii_info, MII_BMCR,
 381                   ucc_geth_phy_read(mii_info, MII_BMCR) | BMCR_RESET);
 382         msleep(4000);
 383
 384         return 0;
 385 }
 386
 387 static int marvell_config_aneg(struct ugeth_mii_info *mii_info)
 388 {
 389         ugphy_vdbg("%s: IN", __FUNCTION__);
 390
 391         /* The Marvell PHY has an errata which requires
 392          * that certain registers get written in order
 393          * to restart autonegotiation */
 394         ucc_geth_phy_write(mii_info, MII_BMCR, BMCR_RESET);
 395
 396         ucc_geth_phy_write(mii_info, 0x1d, 0x1f);
 397         ucc_geth_phy_write(mii_info, 0x1e, 0x200c);
 398         ucc_geth_phy_write(mii_info, 0x1d, 0x5);
 399         ucc_geth_phy_write(mii_info, 0x1e, 0);
 400         ucc_geth_phy_write(mii_info, 0x1e, 0x100);
 401
 402         gbit_config_aneg(mii_info);
 403
 404         return 0;
 405 }
 406
 407 static int marvell_read_status(struct ugeth_mii_info *mii_info)
 408 {
 409         u16 status;
 410         int err;
 411
 412         ugphy_vdbg("%s: IN", __FUNCTION__);
 413
 414         /* Update the link, but return if there
 415          * was an error */
 416         err = genmii_update_link(mii_info);
 417         if (err)
 418                 return err;
 419
 420         /* If the link is up, read the speed and duplex */
 421         /* If we aren't autonegotiating, assume speeds
 422          * are as set */
 423         if (mii_info->autoneg && mii_info->link) {
 424                 int speed;
 425                 status = ucc_geth_phy_read(mii_info, MII_M1011_PHY_SPEC_STATUS);
 426
 427                 /* Get the duplexity */
 428                 if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
 429                         mii_info->duplex = DUPLEX_FULL;
 430                 else
 431                         mii_info->duplex = DUPLEX_HALF;
 432
 433                 /* Get the speed */
 434                 speed = status & MII_M1011_PHY_SPEC_STATUS_SPD_MASK;
 435                 switch (speed) {
 436                 case MII_M1011_PHY_SPEC_STATUS_1000:
 437                         mii_info->speed = SPEED_1000;
 438                         break;
 439                 case MII_M1011_PHY_SPEC_STATUS_100:
 440                         mii_info->speed = SPEED_100;
 441                         break;
 442                 default:
 443                         mii_info->speed = SPEED_10;
 444                         break;
 445                 }
 446                 mii_info->pause = 0;
 447         }
 448
 449         return 0;
 450 }
 451
 452 static int marvell_ack_interrupt(struct ugeth_mii_info *mii_info)
 453 {
 454         ugphy_vdbg("%s: IN", __FUNCTION__);
 455
 456         /* Clear the interrupts by reading the reg */
 457         ucc_geth_phy_read(mii_info, MII_M1011_IEVENT);
 458
 459         return 0;
 460 }
 461
 462 static int marvell_config_intr(struct ugeth_mii_info *mii_info)
 463 {
 464         ugphy_vdbg("%s: IN", __FUNCTION__);
 465
 466         if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
 467                 ucc_geth_phy_write(mii_info, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
 468         else
 469                 ucc_geth_phy_write(mii_info, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
 470
 471         return 0;
 472 }
 473
 474 static int cis820x_init(struct ugeth_mii_info *mii_info)
 475 {
 476         ugphy_vdbg("%s: IN", __FUNCTION__);
 477
 478         ucc_geth_phy_write(mii_info, MII_CIS8201_AUX_CONSTAT,
 479                   MII_CIS8201_AUXCONSTAT_INIT);
 480         ucc_geth_phy_write(mii_info, MII_CIS8201_EXT_CON1, MII_CIS8201_EXTCON1_INIT);
 481
 482         return 0;
 483 }
 484
 485 static int cis820x_read_status(struct ugeth_mii_info *mii_info)
 486 {
 487         u16 status;
 488         int err;
 489
 490         ugphy_vdbg("%s: IN", __FUNCTION__);
 491
 492         /* Update the link, but return if there
 493          * was an error */
 494         err = genmii_update_link(mii_info);
 495         if (err)
 496                 return err;
 497
 498         /* If the link is up, read the speed and duplex */
 499         /* If we aren't autonegotiating, assume speeds
 500          * are as set */
 501         if (mii_info->autoneg && mii_info->link) {
 502                 int speed;
 503
 504                 status = ucc_geth_phy_read(mii_info, MII_CIS8201_AUX_CONSTAT);
 505                 if (status & MII_CIS8201_AUXCONSTAT_DUPLEX)
 506                         mii_info->duplex = DUPLEX_FULL;
 507                 else
 508                         mii_info->duplex = DUPLEX_HALF;
 509
 510                 speed = status & MII_CIS8201_AUXCONSTAT_SPEED;
 511
 512                 switch (speed) {
 513                 case MII_CIS8201_AUXCONSTAT_GBIT:
 514                         mii_info->speed = SPEED_1000;
 515                         break;
 516                 case MII_CIS8201_AUXCONSTAT_100:
 517                         mii_info->speed = SPEED_100;
 518                         break;
 519                 default:
 520                         mii_info->speed = SPEED_10;
 521                         break;
 522                 }
 523         }
 524
 525         return 0;
 526 }
 527
 528 static int cis820x_ack_interrupt(struct ugeth_mii_info *mii_info)
 529 {
 530         ugphy_vdbg("%s: IN", __FUNCTION__);
 531
 532         ucc_geth_phy_read(mii_info, MII_CIS8201_ISTAT);
 533
 534         return 0;
 535 }
 536
 537 static int cis820x_config_intr(struct ugeth_mii_info *mii_info)
 538 {
 539         ugphy_vdbg("%s: IN", __FUNCTION__);
 540
 541         if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
 542                 ucc_geth_phy_write(mii_info, MII_CIS8201_IMASK, MII_CIS8201_IMASK_MASK);
 543         else
 544                 ucc_geth_phy_write(mii_info, MII_CIS8201_IMASK, 0);
 545
 546         return 0;
 547 }
 548
 549 #define DM9161_DELAY 10
 550
 551 static int dm9161_read_status(struct ugeth_mii_info *mii_info)
 552 {
 553         u16 status;
 554         int err;
 555
 556         ugphy_vdbg("%s: IN", __FUNCTION__);
 557
 558         /* Update the link, but return if there
 559          * was an error */
 560         err = genmii_update_link(mii_info);
 561         if (err)
 562                 return err;
 563
 564         /* If the link is up, read the speed and duplex */
 565         /* If we aren't autonegotiating, assume speeds
 566          * are as set */
 567         if (mii_info->autoneg && mii_info->link) {
 568                 status = ucc_geth_phy_read(mii_info, MII_DM9161_SCSR);
 569                 if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_100H))
 570                         mii_info->speed = SPEED_100;
 571                 else
 572                         mii_info->speed = SPEED_10;
 573
 574                 if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_10F))
 575                         mii_info->duplex = DUPLEX_FULL;
 576                 else
 577                         mii_info->duplex = DUPLEX_HALF;
 578         }
 579
 580         return 0;
 581 }
 582
 583 static int dm9161_config_aneg(struct ugeth_mii_info *mii_info)
 584 {
 585         struct dm9161_private *priv = mii_info->priv;
 586
 587         ugphy_vdbg("%s: IN", __FUNCTION__);
 588
 589         if (0 == priv->resetdone)
 590                 return -EAGAIN;
 591
 592         return 0;
 593 }
 594
 595 static void dm9161_timer(unsigned long data)
 596 {
 597         struct ugeth_mii_info *mii_info = (struct ugeth_mii_info *)data;
 598         struct dm9161_private *priv = mii_info->priv;
 599         u16 status = ucc_geth_phy_read(mii_info, MII_BMSR);
 600
 601         ugphy_vdbg("%s: IN", __FUNCTION__);
 602
 603         if (status & BMSR_ANEGCOMPLETE) {
 604                 priv->resetdone = 1;
 605         } else
 606                 mod_timer(&priv->timer, jiffies + DM9161_DELAY * HZ);
 607 }
 608
 609 static int dm9161_init(struct ugeth_mii_info *mii_info)
 610 {
 611         struct dm9161_private *priv;
 612
 613         ugphy_vdbg("%s: IN", __FUNCTION__);
 614
 615         /* Allocate the private data structure */
 616         priv = kmalloc(sizeof(struct dm9161_private), GFP_KERNEL);
 617
 618         if (NULL == priv)
 619                 return -ENOMEM;
 620
 621         mii_info->priv = priv;
 622
 623         /* Reset is not done yet */
 624         priv->resetdone = 0;
 625
 626         ucc_geth_phy_write(mii_info, MII_BMCR,
 627                   ucc_geth_phy_read(mii_info, MII_BMCR) | BMCR_RESET);
 628
 629         ucc_geth_phy_write(mii_info, MII_BMCR,
 630                   ucc_geth_phy_read(mii_info, MII_BMCR) & ~BMCR_ISOLATE);
 631
 632         config_genmii_advert(mii_info);
 633         /* Start/Restart aneg */
 634         genmii_config_aneg(mii_info);
 635
 636         /* Start a timer for DM9161_DELAY seconds to wait
 637          * for the PHY to be ready */
 638         init_timer(&priv->timer);
 639         priv->timer.function = &dm9161_timer;
 640         priv->timer.data = (unsigned long)mii_info;
 641         mod_timer(&priv->timer, jiffies + DM9161_DELAY * HZ);
 642
 643         return 0;
 644 }
 645
 646 static void dm9161_close(struct ugeth_mii_info *mii_info)
 647 {
 648         struct dm9161_private *priv = mii_info->priv;
 649
 650         ugphy_vdbg("%s: IN", __FUNCTION__);
 651
 652         del_timer_sync(&priv->timer);
 653         kfree(priv);
 654 }
 655
 656 static int dm9161_ack_interrupt(struct ugeth_mii_info *mii_info)
 657 {
 658         ugphy_vdbg("%s: IN", __FUNCTION__);
 659
 660         /* Clear the interrupts by reading the reg */
 661         ucc_geth_phy_read(mii_info, MII_DM9161_INTR);
 662
 663
 664         return 0;
 665 }
 666
 667 static int dm9161_config_intr(struct ugeth_mii_info *mii_info)
 668 {
 669         ugphy_vdbg("%s: IN", __FUNCTION__);
 670
 671         if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
 672                 ucc_geth_phy_write(mii_info, MII_DM9161_INTR, MII_DM9161_INTR_INIT);
 673         else
 674                 ucc_geth_phy_write(mii_info, MII_DM9161_INTR, MII_DM9161_INTR_STOP);
 675
 676         return 0;
 677 }
 678
 679 /* Cicada 820x */
 680 static struct phy_info phy_info_cis820x = {
 681         .phy_id = 0x000fc440,
 682         .name = "Cicada Cis8204",
 683         .phy_id_mask = 0x000fffc0,
 684         .features = MII_GBIT_FEATURES,
 685         .init = &cis820x_init,
 686         .config_aneg = &gbit_config_aneg,
 687         .read_status = &cis820x_read_status,
 688         .ack_interrupt = &cis820x_ack_interrupt,
 689         .config_intr = &cis820x_config_intr,
 690 };
 691
 692 static struct phy_info phy_info_dm9161 = {
 693         .phy_id = 0x0181b880,
 694         .phy_id_mask = 0x0ffffff0,
 695         .name = "Davicom DM9161E",
 696         .init = dm9161_init,
 697         .config_aneg = dm9161_config_aneg,
 698         .read_status = dm9161_read_status,
 699         .close = dm9161_close,
 700 };
 701
 702 static struct phy_info phy_info_dm9161a = {
 703         .phy_id = 0x0181b8a0,
 704         .phy_id_mask = 0x0ffffff0,
 705         .name = "Davicom DM9161A",
 706         .features = MII_BASIC_FEATURES,
 707         .init = dm9161_init,
 708         .config_aneg = dm9161_config_aneg,
 709         .read_status = dm9161_read_status,
 710         .ack_interrupt = dm9161_ack_interrupt,
 711         .config_intr = dm9161_config_intr,
 712         .close = dm9161_close,
 713 };
 714
 715 static struct phy_info phy_info_marvell = {
 716         .phy_id = 0x01410c00,
 717         .phy_id_mask = 0xffffff00,
 718         .name = "Marvell 88E11x1",
 719         .features = MII_GBIT_FEATURES,
 720         .init = &marvell_init,
 721         .config_aneg = &marvell_config_aneg,
 722         .read_status = &marvell_read_status,
 723         .ack_interrupt = &marvell_ack_interrupt,
 724         .config_intr = &marvell_config_intr,
 725 };
 726
 727 static struct phy_info phy_info_genmii = {
 728         .phy_id = 0x00000000,
 729         .phy_id_mask = 0x00000000,
 730         .name = "Generic MII",
 731         .features = MII_BASIC_FEATURES,
 732         .config_aneg = genmii_config_aneg,
 733         .read_status = genmii_read_status,
 734 };
 735
 736 static struct phy_info *phy_info[] = {
 737         &phy_info_cis820x,
 738         &phy_info_marvell,
 739         &phy_info_dm9161,
 740         &phy_info_dm9161a,
 741         &phy_info_genmii,
 742         NULL
 743 };
 744
 745 /* Use the PHY ID registers to determine what type of PHY is attached
 746  * to device dev.  return a struct phy_info structure describing that PHY
 747  */
 748 struct phy_info *get_phy_info(struct ugeth_mii_info *mii_info)
 749 {
 750         u16 phy_reg;
 751         u32 phy_ID;
 752         int i;
 753         struct phy_info *theInfo = NULL;
 754         struct net_device *dev = mii_info->dev;
 755
 756         ugphy_vdbg("%s: IN", __FUNCTION__);
 757
 758         /* Grab the bits from PHYIR1, and put them in the upper half */
 759         phy_reg = ucc_geth_phy_read(mii_info, MII_PHYSID1);
 760         phy_ID = (phy_reg & 0xffff) << 16;
 761
 762         /* Grab the bits from PHYIR2, and put them in the lower half */
 763         phy_reg = ucc_geth_phy_read(mii_info, MII_PHYSID2);
 764         phy_ID |= (phy_reg & 0xffff);
 765
 766         /* loop through all the known PHY types, and find one that */
 767         /* matches the ID we read from the PHY. */
 768         for (i = 0; phy_info[i]; i++)
 769                 if (phy_info[i]->phy_id == (phy_ID & phy_info[i]->phy_id_mask)){
 770                         theInfo = phy_info[i];
 771                         break;
 772                 }
 773
 774         /* This shouldn't happen, as we have generic PHY support */
 775         if (theInfo == NULL) {
 776                 ugphy_info("%s: PHY id %x is not supported!", dev->name,
 777                            phy_ID);
 778                 return NULL;
 779         } else {
 780                 ugphy_info("%s: PHY is %s (%x)", dev->name, theInfo->name,
 781                            phy_ID);
 782         }
 783
 784         return theInfo;
 785 }