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/config.h>
  21 #include <linux/kernel.h>
  22 #include <linux/sched.h>
  23 #include <linux/string.h>
  24 #include <linux/errno.h>
  25 #include <linux/slab.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/init.h>
  28 #include <linux/delay.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/skbuff.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/mm.h>
  34 #include <linux/module.h>
  35 #include <linux/version.h>
  36 #include <linux/crc32.h>
  37 #include <linux/mii.h>
  38 #include <linux/ethtool.h>
  39
  40 #include <asm/io.h>
  41 #include <asm/irq.h>
  42 #include <asm/uaccess.h>
  43
  44 #include "ucc_geth.h"
  45 #include "ucc_geth_phy.h"
  46 #include <platforms/83xx/mpc8360e_pb.h>
  47
  48 #define ugphy_printk(level, format, arg...)  \
  49         printk(level format "\n", ## arg)
  50
  51 #define ugphy_dbg(format, arg...)            \
  52         ugphy_printk(KERN_DEBUG, format , ## arg)
  53 #define ugphy_err(format, arg...)            \
  54         ugphy_printk(KERN_ERR, format , ## arg)
  55 #define ugphy_info(format, arg...)           \
  56         ugphy_printk(KERN_INFO, format , ## arg)
  57 #define ugphy_warn(format, arg...)           \
  58         ugphy_printk(KERN_WARNING, format , ## arg)
  59
  60 #ifdef UGETH_VERBOSE_DEBUG
  61 #define ugphy_vdbg ugphy_dbg
  62 #else
  63 #define ugphy_vdbg(fmt, args...) do { } while (0)
  64 #endif                          /* UGETH_VERBOSE_DEBUG */
  65
  66 static void config_genmii_advert(struct ugeth_mii_info *mii_info);
  67 static void genmii_setup_forced(struct ugeth_mii_info *mii_info);
  68 static void genmii_restart_aneg(struct ugeth_mii_info *mii_info);
  69 static int gbit_config_aneg(struct ugeth_mii_info *mii_info);
  70 static int genmii_config_aneg(struct ugeth_mii_info *mii_info);
  71 static int genmii_update_link(struct ugeth_mii_info *mii_info);
  72 static int genmii_read_status(struct ugeth_mii_info *mii_info);
  73 u16 phy_read(struct ugeth_mii_info *mii_info, u16 regnum);
  74 void phy_write(struct ugeth_mii_info *mii_info, u16 regnum, u16 val);
  75
  76 static u8 *bcsr_regs = NULL;
  77
  78 /* Write value to the PHY for this device to the register at regnum, */
  79 /* waiting until the write is done before it returns.  All PHY */
  80 /* configuration has to be done through the TSEC1 MIIM regs */
  81 void write_phy_reg(struct net_device *dev, int mii_id, int regnum, int value)
  82 {
  83         ucc_geth_private_t *ugeth = netdev_priv(dev);
  84         ucc_mii_mng_t *mii_regs;
  85         enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
  86         u32 tmp_reg;
  87
  88         ugphy_vdbg("%s: IN", __FUNCTION__);
  89
  90         spin_lock_irq(&ugeth->lock);
  91
  92         mii_regs = ugeth->mii_info->mii_regs;
  93
  94         /* Set this UCC to be the master of the MII managment */
  95         ucc_set_qe_mux_mii_mng(ugeth->ug_info->uf_info.ucc_num);
  96
  97         /* Stop the MII management read cycle */
  98         out_be32(&mii_regs->miimcom, 0);
  99         /* Setting up the MII Mangement Address Register */
 100         tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
 101         out_be32(&mii_regs->miimadd, tmp_reg);
 102
 103         /* Setting up the MII Mangement Control Register with the value */
 104         out_be32(&mii_regs->miimcon, (u32) value);
 105
 106         /* Wait till MII management write is complete */
 107         while ((in_be32(&mii_regs->miimind)) & MIIMIND_BUSY)
 108                 cpu_relax();
 109
 110         spin_unlock_irq(&ugeth->lock);
 111
 112         udelay(10000);
 113 }
 114
 115 /* Reads from register regnum in the PHY for device dev, */
 116 /* returning the value.  Clears miimcom first.  All PHY */
 117 /* configuration has to be done through the TSEC1 MIIM regs */
 118 int read_phy_reg(struct net_device *dev, int mii_id, int regnum)
 119 {
 120         ucc_geth_private_t *ugeth = netdev_priv(dev);
 121         ucc_mii_mng_t *mii_regs;
 122         enet_tbi_mii_reg_e mii_reg = (enet_tbi_mii_reg_e) regnum;
 123         u32 tmp_reg;
 124         u16 value;
 125
 126         ugphy_vdbg("%s: IN", __FUNCTION__);
 127
 128         spin_lock_irq(&ugeth->lock);
 129
 130         mii_regs = ugeth->mii_info->mii_regs;
 131
 132         /* Setting up the MII Mangement Address Register */
 133         tmp_reg = ((u32) mii_id << MIIMADD_PHY_ADDRESS_SHIFT) | mii_reg;
 134         out_be32(&mii_regs->miimadd, tmp_reg);
 135
 136         /* Perform an MII management read cycle */
 137         out_be32(&mii_regs->miimcom, MIIMCOM_READ_CYCLE);
 138
 139         /* Wait till MII management write is complete */
 140         while ((in_be32(&mii_regs->miimind)) & MIIMIND_BUSY)
 141                 cpu_relax();
 142
 143         udelay(10000);
 144
 145         /* Read MII management status  */
 146         value = (u16) in_be32(&mii_regs->miimstat);
 147         out_be32(&mii_regs->miimcom, 0);
 148         if (value == 0xffff)
 149                 ugphy_warn("read wrong value : mii_id %d,mii_reg %d, base %08x",
 150                            mii_id, mii_reg, (u32) & (mii_regs->miimcfg));
 151
 152         spin_unlock_irq(&ugeth->lock);
 153
 154         return (value);
 155 }
 156
 157 void mii_clear_phy_interrupt(struct ugeth_mii_info *mii_info)
 158 {
 159         ugphy_vdbg("%s: IN", __FUNCTION__);
 160
 161         if (mii_info->phyinfo->ack_interrupt)
 162                 mii_info->phyinfo->ack_interrupt(mii_info);
 163 }
 164
 165 void mii_configure_phy_interrupt(struct ugeth_mii_info *mii_info,
 166                                  u32 interrupts)
 167 {
 168         ugphy_vdbg("%s: IN", __FUNCTION__);
 169
 170         mii_info->interrupts = interrupts;
 171         if (mii_info->phyinfo->config_intr)
 172                 mii_info->phyinfo->config_intr(mii_info);
 173 }
 174
 175 /* Writes MII_ADVERTISE with the appropriate values, after
 176  * sanitizing advertise to make sure only supported features
 177  * are advertised
 178  */
 179 static void config_genmii_advert(struct ugeth_mii_info *mii_info)
 180 {
 181         u32 advertise;
 182         u16 adv;
 183
 184         ugphy_vdbg("%s: IN", __FUNCTION__);
 185
 186         /* Only allow advertising what this PHY supports */
 187         mii_info->advertising &= mii_info->phyinfo->features;
 188         advertise = mii_info->advertising;
 189
 190         /* Setup standard advertisement */
 191         adv = phy_read(mii_info, MII_ADVERTISE);
 192         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
 193         if (advertise & ADVERTISED_10baseT_Half)
 194                 adv |= ADVERTISE_10HALF;
 195         if (advertise & ADVERTISED_10baseT_Full)
 196                 adv |= ADVERTISE_10FULL;
 197         if (advertise & ADVERTISED_100baseT_Half)
 198                 adv |= ADVERTISE_100HALF;
 199         if (advertise & ADVERTISED_100baseT_Full)
 200                 adv |= ADVERTISE_100FULL;
 201         phy_write(mii_info, MII_ADVERTISE, adv);
 202 }
 203
 204 static void genmii_setup_forced(struct ugeth_mii_info *mii_info)
 205 {
 206         u16 ctrl;
 207         u32 features = mii_info->phyinfo->features;
 208
 209         ugphy_vdbg("%s: IN", __FUNCTION__);
 210
 211         ctrl = phy_read(mii_info, MII_BMCR);
 212
 213         ctrl &=
 214             ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_ANENABLE);
 215         ctrl |= BMCR_RESET;
 216
 217         switch (mii_info->speed) {
 218         case SPEED_1000:
 219                 if (features & (SUPPORTED_1000baseT_Half
 220                                 | SUPPORTED_1000baseT_Full)) {
 221                         ctrl |= BMCR_SPEED1000;
 222                         break;
 223                 }
 224                 mii_info->speed = SPEED_100;
 225         case SPEED_100:
 226                 if (features & (SUPPORTED_100baseT_Half
 227                                 | SUPPORTED_100baseT_Full)) {
 228                         ctrl |= BMCR_SPEED100;
 229                         break;
 230                 }
 231                 mii_info->speed = SPEED_10;
 232         case SPEED_10:
 233                 if (features & (SUPPORTED_10baseT_Half
 234                                 | SUPPORTED_10baseT_Full))
 235                         break;
 236         default:                /* Unsupported speed! */
 237                 ugphy_err("%s: Bad speed!", mii_info->dev->name);
 238                 break;
 239         }
 240
 241         phy_write(mii_info, MII_BMCR, ctrl);
 242 }
 243
 244 /* Enable and Restart Autonegotiation */
 245 static void genmii_restart_aneg(struct ugeth_mii_info *mii_info)
 246 {
 247         u16 ctl;
 248
 249         ugphy_vdbg("%s: IN", __FUNCTION__);
 250
 251         ctl = phy_read(mii_info, MII_BMCR);
 252         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
 253         phy_write(mii_info, MII_BMCR, ctl);
 254 }
 255
 256 static int gbit_config_aneg(struct ugeth_mii_info *mii_info)
 257 {
 258         u16 adv;
 259         u32 advertise;
 260
 261         ugphy_vdbg("%s: IN", __FUNCTION__);
 262
 263         if (mii_info->autoneg) {
 264                 /* Configure the ADVERTISE register */
 265                 config_genmii_advert(mii_info);
 266                 advertise = mii_info->advertising;
 267
 268                 adv = phy_read(mii_info, MII_1000BASETCONTROL);
 269                 adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
 270                          MII_1000BASETCONTROL_HALFDUPLEXCAP);
 271                 if (advertise & SUPPORTED_1000baseT_Half)
 272                         adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
 273                 if (advertise & SUPPORTED_1000baseT_Full)
 274                         adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
 275                 phy_write(mii_info, MII_1000BASETCONTROL, adv);
 276
 277                 /* Start/Restart aneg */
 278                 genmii_restart_aneg(mii_info);
 279         } else
 280                 genmii_setup_forced(mii_info);
 281
 282         return 0;
 283 }
 284
 285 static int genmii_config_aneg(struct ugeth_mii_info *mii_info)
 286 {
 287         ugphy_vdbg("%s: IN", __FUNCTION__);
 288
 289         if (mii_info->autoneg) {
 290                 config_genmii_advert(mii_info);
 291                 genmii_restart_aneg(mii_info);
 292         } else
 293                 genmii_setup_forced(mii_info);
 294
 295         return 0;
 296 }
 297
 298 static int genmii_update_link(struct ugeth_mii_info *mii_info)
 299 {
 300         u16 status;
 301
 302         ugphy_vdbg("%s: IN", __FUNCTION__);
 303
 304         /* Do a fake read */
 305         phy_read(mii_info, MII_BMSR);
 306
 307         /* Read link and autonegotiation status */
 308         status = phy_read(mii_info, MII_BMSR);
 309         if ((status & BMSR_LSTATUS) == 0)
 310                 mii_info->link = 0;
 311         else
 312                 mii_info->link = 1;
 313
 314         /* If we are autonegotiating, and not done,
 315          * return an error */
 316         if (mii_info->autoneg && !(status & BMSR_ANEGCOMPLETE))
 317                 return -EAGAIN;
 318
 319         return 0;
 320 }
 321
 322 static int genmii_read_status(struct ugeth_mii_info *mii_info)
 323 {
 324         u16 status;
 325         int err;
 326
 327         ugphy_vdbg("%s: IN", __FUNCTION__);
 328
 329         /* Update the link, but return if there
 330          * was an error */
 331         err = genmii_update_link(mii_info);
 332         if (err)
 333                 return err;
 334
 335         if (mii_info->autoneg) {
 336                 status = phy_read(mii_info, MII_LPA);
 337
 338                 if (status & (LPA_10FULL | LPA_100FULL))
 339                         mii_info->duplex = DUPLEX_FULL;
 340                 else
 341                         mii_info->duplex = DUPLEX_HALF;
 342                 if (status & (LPA_100FULL | LPA_100HALF))
 343                         mii_info->speed = SPEED_100;
 344                 else
 345                         mii_info->speed = SPEED_10;
 346                 mii_info->pause = 0;
 347         }
 348         /* On non-aneg, we assume what we put in BMCR is the speed,
 349          * though magic-aneg shouldn't prevent this case from occurring
 350          */
 351
 352         return 0;
 353 }
 354
 355 static int marvell_init(struct ugeth_mii_info *mii_info)
 356 {
 357         ugphy_vdbg("%s: IN", __FUNCTION__);
 358
 359         phy_write(mii_info, 0x14, 0x0cd2);
 360         phy_write(mii_info, MII_BMCR,
 361                   phy_read(mii_info, MII_BMCR) | BMCR_RESET);
 362         msleep(4000);
 363
 364         return 0;
 365 }
 366
 367 static int marvell_config_aneg(struct ugeth_mii_info *mii_info)
 368 {
 369         ugphy_vdbg("%s: IN", __FUNCTION__);
 370
 371         /* The Marvell PHY has an errata which requires
 372          * that certain registers get written in order
 373          * to restart autonegotiation */
 374         phy_write(mii_info, MII_BMCR, BMCR_RESET);
 375
 376         phy_write(mii_info, 0x1d, 0x1f);
 377         phy_write(mii_info, 0x1e, 0x200c);
 378         phy_write(mii_info, 0x1d, 0x5);
 379         phy_write(mii_info, 0x1e, 0);
 380         phy_write(mii_info, 0x1e, 0x100);
 381
 382         gbit_config_aneg(mii_info);
 383
 384         return 0;
 385 }
 386
 387 static int marvell_read_status(struct ugeth_mii_info *mii_info)
 388 {
 389         u16 status;
 390         int err;
 391
 392         ugphy_vdbg("%s: IN", __FUNCTION__);
 393
 394         /* Update the link, but return if there
 395          * was an error */
 396         err = genmii_update_link(mii_info);
 397         if (err)
 398                 return err;
 399
 400         /* If the link is up, read the speed and duplex */
 401         /* If we aren't autonegotiating, assume speeds
 402          * are as set */
 403         if (mii_info->autoneg && mii_info->link) {
 404                 int speed;
 405                 status = phy_read(mii_info, MII_M1011_PHY_SPEC_STATUS);
 406
 407                 /* Get the duplexity */
 408                 if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
 409                         mii_info->duplex = DUPLEX_FULL;
 410                 else
 411                         mii_info->duplex = DUPLEX_HALF;
 412
 413                 /* Get the speed */
 414                 speed = status & MII_M1011_PHY_SPEC_STATUS_SPD_MASK;
 415                 switch (speed) {
 416                 case MII_M1011_PHY_SPEC_STATUS_1000:
 417                         mii_info->speed = SPEED_1000;
 418                         break;
 419                 case MII_M1011_PHY_SPEC_STATUS_100:
 420                         mii_info->speed = SPEED_100;
 421                         break;
 422                 default:
 423                         mii_info->speed = SPEED_10;
 424                         break;
 425                 }
 426                 mii_info->pause = 0;
 427         }
 428
 429         return 0;
 430 }
 431
 432 static int marvell_ack_interrupt(struct ugeth_mii_info *mii_info)
 433 {
 434         ugphy_vdbg("%s: IN", __FUNCTION__);
 435
 436         /* Clear the interrupts by reading the reg */
 437         phy_read(mii_info, MII_M1011_IEVENT);
 438
 439         return 0;
 440 }
 441
 442 static int marvell_config_intr(struct ugeth_mii_info *mii_info)
 443 {
 444         ugphy_vdbg("%s: IN", __FUNCTION__);
 445
 446         if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
 447                 phy_write(mii_info, MII_M1011_IMASK, MII_M1011_IMASK_INIT);
 448         else
 449                 phy_write(mii_info, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR);
 450
 451         return 0;
 452 }
 453
 454 static int cis820x_init(struct ugeth_mii_info *mii_info)
 455 {
 456         ugphy_vdbg("%s: IN", __FUNCTION__);
 457
 458         phy_write(mii_info, MII_CIS8201_AUX_CONSTAT,
 459                   MII_CIS8201_AUXCONSTAT_INIT);
 460         phy_write(mii_info, MII_CIS8201_EXT_CON1, MII_CIS8201_EXTCON1_INIT);
 461
 462         return 0;
 463 }
 464
 465 static int cis820x_read_status(struct ugeth_mii_info *mii_info)
 466 {
 467         u16 status;
 468         int err;
 469
 470         ugphy_vdbg("%s: IN", __FUNCTION__);
 471
 472         /* Update the link, but return if there
 473          * was an error */
 474         err = genmii_update_link(mii_info);
 475         if (err)
 476                 return err;
 477
 478         /* If the link is up, read the speed and duplex */
 479         /* If we aren't autonegotiating, assume speeds
 480          * are as set */
 481         if (mii_info->autoneg && mii_info->link) {
 482                 int speed;
 483
 484                 status = phy_read(mii_info, MII_CIS8201_AUX_CONSTAT);
 485                 if (status & MII_CIS8201_AUXCONSTAT_DUPLEX)
 486                         mii_info->duplex = DUPLEX_FULL;
 487                 else
 488                         mii_info->duplex = DUPLEX_HALF;
 489
 490                 speed = status & MII_CIS8201_AUXCONSTAT_SPEED;
 491
 492                 switch (speed) {
 493                 case MII_CIS8201_AUXCONSTAT_GBIT:
 494                         mii_info->speed = SPEED_1000;
 495                         break;
 496                 case MII_CIS8201_AUXCONSTAT_100:
 497                         mii_info->speed = SPEED_100;
 498                         break;
 499                 default:
 500                         mii_info->speed = SPEED_10;
 501                         break;
 502                 }
 503         }
 504
 505         return 0;
 506 }
 507
 508 static int cis820x_ack_interrupt(struct ugeth_mii_info *mii_info)
 509 {
 510         ugphy_vdbg("%s: IN", __FUNCTION__);
 511
 512         phy_read(mii_info, MII_CIS8201_ISTAT);
 513
 514         return 0;
 515 }
 516
 517 static int cis820x_config_intr(struct ugeth_mii_info *mii_info)
 518 {
 519         ugphy_vdbg("%s: IN", __FUNCTION__);
 520
 521         if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
 522                 phy_write(mii_info, MII_CIS8201_IMASK, MII_CIS8201_IMASK_MASK);
 523         else
 524                 phy_write(mii_info, MII_CIS8201_IMASK, 0);
 525
 526         return 0;
 527 }
 528
 529 #define DM9161_DELAY 10
 530
 531 static int dm9161_read_status(struct ugeth_mii_info *mii_info)
 532 {
 533         u16 status;
 534         int err;
 535
 536         ugphy_vdbg("%s: IN", __FUNCTION__);
 537
 538         /* Update the link, but return if there
 539          * was an error */
 540         err = genmii_update_link(mii_info);
 541         if (err)
 542                 return err;
 543
 544         /* If the link is up, read the speed and duplex */
 545         /* If we aren't autonegotiating, assume speeds
 546          * are as set */
 547         if (mii_info->autoneg && mii_info->link) {
 548                 status = phy_read(mii_info, MII_DM9161_SCSR);
 549                 if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_100H))
 550                         mii_info->speed = SPEED_100;
 551                 else
 552                         mii_info->speed = SPEED_10;
 553
 554                 if (status & (MII_DM9161_SCSR_100F | MII_DM9161_SCSR_10F))
 555                         mii_info->duplex = DUPLEX_FULL;
 556                 else
 557                         mii_info->duplex = DUPLEX_HALF;
 558         }
 559
 560         return 0;
 561 }
 562
 563 static int dm9161_config_aneg(struct ugeth_mii_info *mii_info)
 564 {
 565         struct dm9161_private *priv = mii_info->priv;
 566
 567         ugphy_vdbg("%s: IN", __FUNCTION__);
 568
 569         if (0 == priv->resetdone)
 570                 return -EAGAIN;
 571
 572         return 0;
 573 }
 574
 575 static void dm9161_timer(unsigned long data)
 576 {
 577         struct ugeth_mii_info *mii_info = (struct ugeth_mii_info *)data;
 578         struct dm9161_private *priv = mii_info->priv;
 579         u16 status = phy_read(mii_info, MII_BMSR);
 580
 581         ugphy_vdbg("%s: IN", __FUNCTION__);
 582
 583         if (status & BMSR_ANEGCOMPLETE) {
 584                 priv->resetdone = 1;
 585         } else
 586                 mod_timer(&priv->timer, jiffies + DM9161_DELAY * HZ);
 587 }
 588
 589 static int dm9161_init(struct ugeth_mii_info *mii_info)
 590 {
 591         struct dm9161_private *priv;
 592
 593         ugphy_vdbg("%s: IN", __FUNCTION__);
 594
 595         /* Allocate the private data structure */
 596         priv = kmalloc(sizeof(struct dm9161_private), GFP_KERNEL);
 597
 598         if (NULL == priv)
 599                 return -ENOMEM;
 600
 601         mii_info->priv = priv;
 602
 603         /* Reset is not done yet */
 604         priv->resetdone = 0;
 605
 606         phy_write(mii_info, MII_BMCR,
 607                   phy_read(mii_info, MII_BMCR) | BMCR_RESET);
 608
 609         phy_write(mii_info, MII_BMCR,
 610                   phy_read(mii_info, MII_BMCR) & ~BMCR_ISOLATE);
 611
 612         config_genmii_advert(mii_info);
 613         /* Start/Restart aneg */
 614         genmii_config_aneg(mii_info);
 615
 616         /* Start a timer for DM9161_DELAY seconds to wait
 617          * for the PHY to be ready */
 618         init_timer(&priv->timer);
 619         priv->timer.function = &dm9161_timer;
 620         priv->timer.data = (unsigned long)mii_info;
 621         mod_timer(&priv->timer, jiffies + DM9161_DELAY * HZ);
 622
 623         return 0;
 624 }
 625
 626 static void dm9161_close(struct ugeth_mii_info *mii_info)
 627 {
 628         struct dm9161_private *priv = mii_info->priv;
 629
 630         ugphy_vdbg("%s: IN", __FUNCTION__);
 631
 632         del_timer_sync(&priv->timer);
 633         kfree(priv);
 634 }
 635
 636 static int dm9161_ack_interrupt(struct ugeth_mii_info *mii_info)
 637 {
 638 /* FIXME: This lines are for BUG fixing in the mpc8325.
 639 Remove this from here when it's fixed */
 640         if (bcsr_regs == NULL)
 641                 bcsr_regs = (u8 *) ioremap(BCSR_PHYS_ADDR, BCSR_SIZE);
 642         bcsr_regs[14] |= 0x40;
 643         ugphy_vdbg("%s: IN", __FUNCTION__);
 644
 645         /* Clear the interrupts by reading the reg */
 646         phy_read(mii_info, MII_DM9161_INTR);
 647
 648
 649         return 0;
 650 }
 651
 652 static int dm9161_config_intr(struct ugeth_mii_info *mii_info)
 653 {
 654 /* FIXME: This lines are for BUG fixing in the mpc8325.
 655 Remove this from here when it's fixed */
 656         if (bcsr_regs == NULL) {
 657                 bcsr_regs = (u8 *) ioremap(BCSR_PHYS_ADDR, BCSR_SIZE);
 658                 bcsr_regs[14] &= ~0x40;
 659         }
 660         ugphy_vdbg("%s: IN", __FUNCTION__);
 661
 662         if (mii_info->interrupts == MII_INTERRUPT_ENABLED)
 663                 phy_write(mii_info, MII_DM9161_INTR, MII_DM9161_INTR_INIT);
 664         else
 665                 phy_write(mii_info, MII_DM9161_INTR, MII_DM9161_INTR_STOP);
 666
 667         return 0;
 668 }
 669
 670 /* Cicada 820x */
 671 static struct phy_info phy_info_cis820x = {
 672         .phy_id = 0x000fc440,
 673         .name = "Cicada Cis8204",
 674         .phy_id_mask = 0x000fffc0,
 675         .features = MII_GBIT_FEATURES,
 676         .init = &cis820x_init,
 677         .config_aneg = &gbit_config_aneg,
 678         .read_status = &cis820x_read_status,
 679         .ack_interrupt = &cis820x_ack_interrupt,
 680         .config_intr = &cis820x_config_intr,
 681 };
 682
 683 static struct phy_info phy_info_dm9161 = {
 684         .phy_id = 0x0181b880,
 685         .phy_id_mask = 0x0ffffff0,
 686         .name = "Davicom DM9161E",
 687         .init = dm9161_init,
 688         .config_aneg = dm9161_config_aneg,
 689         .read_status = dm9161_read_status,
 690         .close = dm9161_close,
 691 };
 692
 693 static struct phy_info phy_info_dm9161a = {
 694         .phy_id = 0x0181b8a0,
 695         .phy_id_mask = 0x0ffffff0,
 696         .name = "Davicom DM9161A",
 697         .features = MII_BASIC_FEATURES,
 698         .init = dm9161_init,
 699         .config_aneg = dm9161_config_aneg,
 700         .read_status = dm9161_read_status,
 701         .ack_interrupt = dm9161_ack_interrupt,
 702         .config_intr = dm9161_config_intr,
 703         .close = dm9161_close,
 704 };
 705
 706 static struct phy_info phy_info_marvell = {
 707         .phy_id = 0x01410c00,
 708         .phy_id_mask = 0xffffff00,
 709         .name = "Marvell 88E11x1",
 710         .features = MII_GBIT_FEATURES,
 711         .init = &marvell_init,
 712         .config_aneg = &marvell_config_aneg,
 713         .read_status = &marvell_read_status,
 714         .ack_interrupt = &marvell_ack_interrupt,
 715         .config_intr = &marvell_config_intr,
 716 };
 717
 718 static struct phy_info phy_info_genmii = {
 719         .phy_id = 0x00000000,
 720         .phy_id_mask = 0x00000000,
 721         .name = "Generic MII",
 722         .features = MII_BASIC_FEATURES,
 723         .config_aneg = genmii_config_aneg,
 724         .read_status = genmii_read_status,
 725 };
 726
 727 static struct phy_info *phy_info[] = {
 728         &phy_info_cis820x,
 729         &phy_info_marvell,
 730         &phy_info_dm9161,
 731         &phy_info_dm9161a,
 732         &phy_info_genmii,
 733         NULL
 734 };
 735
 736 u16 phy_read(struct ugeth_mii_info *mii_info, u16 regnum)
 737 {
 738         u16 retval;
 739         unsigned long flags;
 740
 741         ugphy_vdbg("%s: IN", __FUNCTION__);
 742
 743         spin_lock_irqsave(&mii_info->mdio_lock, flags);
 744         retval = mii_info->mdio_read(mii_info->dev, mii_info->mii_id, regnum);
 745         spin_unlock_irqrestore(&mii_info->mdio_lock, flags);
 746
 747         return retval;
 748 }
 749
 750 void phy_write(struct ugeth_mii_info *mii_info, u16 regnum, u16 val)
 751 {
 752         unsigned long flags;
 753
 754         ugphy_vdbg("%s: IN", __FUNCTION__);
 755
 756         spin_lock_irqsave(&mii_info->mdio_lock, flags);
 757         mii_info->mdio_write(mii_info->dev, mii_info->mii_id, regnum, val);
 758         spin_unlock_irqrestore(&mii_info->mdio_lock, flags);
 759 }
 760
 761 /* Use the PHY ID registers to determine what type of PHY is attached
 762  * to device dev.  return a struct phy_info structure describing that PHY
 763  */
 764 struct phy_info *get_phy_info(struct ugeth_mii_info *mii_info)
 765 {
 766         u16 phy_reg;
 767         u32 phy_ID;
 768         int i;
 769         struct phy_info *theInfo = NULL;
 770         struct net_device *dev = mii_info->dev;
 771
 772         ugphy_vdbg("%s: IN", __FUNCTION__);
 773
 774         /* Grab the bits from PHYIR1, and put them in the upper half */
 775         phy_reg = phy_read(mii_info, MII_PHYSID1);
 776         phy_ID = (phy_reg & 0xffff) << 16;
 777
 778         /* Grab the bits from PHYIR2, and put them in the lower half */
 779         phy_reg = phy_read(mii_info, MII_PHYSID2);
 780         phy_ID |= (phy_reg & 0xffff);
 781
 782         /* loop through all the known PHY types, and find one that */
 783         /* matches the ID we read from the PHY. */
 784         for (i = 0; phy_info[i]; i++)
 785                 if (phy_info[i]->phy_id == (phy_ID & phy_info[i]->phy_id_mask)){
 786                         theInfo = phy_info[i];
 787                         break;
 788                 }
 789
 790         /* This shouldn't happen, as we have generic PHY support */
 791         if (theInfo == NULL) {
 792                 ugphy_info("%s: PHY id %x is not supported!", dev->name,
 793                            phy_ID);
 794                 return NULL;
 795         } else {
 796                 ugphy_info("%s: PHY is %s (%x)", dev->name, theInfo->name,
 797                            phy_ID);
 798         }
 799
 800         return theInfo;
 801 }