drivers/net/sungem_phy.c

   1 /*
   2  * PHY drivers for the sungem ethernet driver.
   3  *
   4  * This file could be shared with other drivers.
   5  *
   6  * (c) 2002-2007, Benjamin Herrenscmidt (benh@kernel.crashing.org)
   7  *
   8  * TODO:
   9  *  - Add support for PHYs that provide an IRQ line
  10  *  - Eventually moved the entire polling state machine in
  11  *    there (out of the eth driver), so that it can easily be
  12  *    skipped on PHYs that implement it in hardware.
  13  *  - On LXT971 & BCM5201, Apple uses some chip specific regs
  14  *    to read the link status. Figure out why and if it makes
  15  *    sense to do the same (magic aneg ?)
  16  *  - Apple has some additional power management code for some
  17  *    Broadcom PHYs that they "hide" from the OpenSource version
  18  *    of darwin, still need to reverse engineer that
  19  */
  20
  21
  22 #include <linux/module.h>
  23
  24 #include <linux/kernel.h>
  25 #include <linux/types.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/mii.h>
  29 #include <linux/ethtool.h>
  30 #include <linux/delay.h>
  31
  32 #ifdef CONFIG_PPC_PMAC
  33 #include <asm/prom.h>
  34 #endif
  35
  36 #include "sungem_phy.h"
  37
  38 /* Link modes of the BCM5400 PHY */
  39 static const int phy_BCM5400_link_table[8][3] = {
  40         { 0, 0, 0 },    /* No link */
  41         { 0, 0, 0 },    /* 10BT Half Duplex */
  42         { 1, 0, 0 },    /* 10BT Full Duplex */
  43         { 0, 1, 0 },    /* 100BT Half Duplex */
  44         { 0, 1, 0 },    /* 100BT Half Duplex */
  45         { 1, 1, 0 },    /* 100BT Full Duplex*/
  46         { 1, 0, 1 },    /* 1000BT */
  47         { 1, 0, 1 },    /* 1000BT */
  48 };
  49
  50 static inline int __phy_read(struct mii_phy* phy, int id, int reg)
  51 {
  52         return phy->mdio_read(phy->dev, id, reg);
  53 }
  54
  55 static inline void __phy_write(struct mii_phy* phy, int id, int reg, int val)
  56 {
  57         phy->mdio_write(phy->dev, id, reg, val);
  58 }
  59
  60 static inline int phy_read(struct mii_phy* phy, int reg)
  61 {
  62         return phy->mdio_read(phy->dev, phy->mii_id, reg);
  63 }
  64
  65 static inline void phy_write(struct mii_phy* phy, int reg, int val)
  66 {
  67         phy->mdio_write(phy->dev, phy->mii_id, reg, val);
  68 }
  69
  70 static int reset_one_mii_phy(struct mii_phy* phy, int phy_id)
  71 {
  72         u16 val;
  73         int limit = 10000;
  74
  75         val = __phy_read(phy, phy_id, MII_BMCR);
  76         val &= ~(BMCR_ISOLATE | BMCR_PDOWN);
  77         val |= BMCR_RESET;
  78         __phy_write(phy, phy_id, MII_BMCR, val);
  79
  80         udelay(100);
  81
  82         while (limit--) {
  83                 val = __phy_read(phy, phy_id, MII_BMCR);
  84                 if ((val & BMCR_RESET) == 0)
  85                         break;
  86                 udelay(10);
  87         }
  88         if ((val & BMCR_ISOLATE) && limit > 0)
  89                 __phy_write(phy, phy_id, MII_BMCR, val & ~BMCR_ISOLATE);
  90
  91         return (limit <= 0);
  92 }
  93
  94 static int bcm5201_init(struct mii_phy* phy)
  95 {
  96         u16 data;
  97
  98         data = phy_read(phy, MII_BCM5201_MULTIPHY);
  99         data &= ~MII_BCM5201_MULTIPHY_SUPERISOLATE;
 100         phy_write(phy, MII_BCM5201_MULTIPHY, data);
 101
 102         phy_write(phy, MII_BCM5201_INTERRUPT, 0);
 103
 104         return 0;
 105 }
 106
 107 static int bcm5201_suspend(struct mii_phy* phy)
 108 {
 109         phy_write(phy, MII_BCM5201_INTERRUPT, 0);
 110         phy_write(phy, MII_BCM5201_MULTIPHY, MII_BCM5201_MULTIPHY_SUPERISOLATE);
 111
 112         return 0;
 113 }
 114
 115 static int bcm5221_init(struct mii_phy* phy)
 116 {
 117         u16 data;
 118
 119         data = phy_read(phy, MII_BCM5221_TEST);
 120         phy_write(phy, MII_BCM5221_TEST,
 121                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
 122
 123         data = phy_read(phy, MII_BCM5221_SHDOW_AUX_STAT2);
 124         phy_write(phy, MII_BCM5221_SHDOW_AUX_STAT2,
 125                 data | MII_BCM5221_SHDOW_AUX_STAT2_APD);
 126
 127         data = phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
 128         phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
 129                 data | MII_BCM5221_SHDOW_AUX_MODE4_CLKLOPWR);
 130
 131         data = phy_read(phy, MII_BCM5221_TEST);
 132         phy_write(phy, MII_BCM5221_TEST,
 133                 data & ~MII_BCM5221_TEST_ENABLE_SHADOWS);
 134
 135         return 0;
 136 }
 137
 138 static int bcm5221_suspend(struct mii_phy* phy)
 139 {
 140         u16 data;
 141
 142         data = phy_read(phy, MII_BCM5221_TEST);
 143         phy_write(phy, MII_BCM5221_TEST,
 144                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
 145
 146         data = phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
 147         phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
 148                   data | MII_BCM5221_SHDOW_AUX_MODE4_IDDQMODE);
 149
 150         return 0;
 151 }
 152
 153 static int bcm5241_init(struct mii_phy* phy)
 154 {
 155         u16 data;
 156
 157         data = phy_read(phy, MII_BCM5221_TEST);
 158         phy_write(phy, MII_BCM5221_TEST,
 159                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
 160
 161         data = phy_read(phy, MII_BCM5221_SHDOW_AUX_STAT2);
 162         phy_write(phy, MII_BCM5221_SHDOW_AUX_STAT2,
 163                 data | MII_BCM5221_SHDOW_AUX_STAT2_APD);
 164
 165         data = phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
 166         phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
 167                 data & ~MII_BCM5241_SHDOW_AUX_MODE4_STANDBYPWR);
 168
 169         data = phy_read(phy, MII_BCM5221_TEST);
 170         phy_write(phy, MII_BCM5221_TEST,
 171                 data & ~MII_BCM5221_TEST_ENABLE_SHADOWS);
 172
 173         return 0;
 174 }
 175
 176 static int bcm5241_suspend(struct mii_phy* phy)
 177 {
 178         u16 data;
 179
 180         data = phy_read(phy, MII_BCM5221_TEST);
 181         phy_write(phy, MII_BCM5221_TEST,
 182                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
 183
 184         data = phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
 185         phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
 186                   data | MII_BCM5241_SHDOW_AUX_MODE4_STANDBYPWR);
 187
 188         return 0;
 189 }
 190
 191 static int bcm5400_init(struct mii_phy* phy)
 192 {
 193         u16 data;
 194
 195         /* Configure for gigabit full duplex */
 196         data = phy_read(phy, MII_BCM5400_AUXCONTROL);
 197         data |= MII_BCM5400_AUXCONTROL_PWR10BASET;
 198         phy_write(phy, MII_BCM5400_AUXCONTROL, data);
 199
 200         data = phy_read(phy, MII_BCM5400_GB_CONTROL);
 201         data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
 202         phy_write(phy, MII_BCM5400_GB_CONTROL, data);
 203
 204         udelay(100);
 205
 206         /* Reset and configure cascaded 10/100 PHY */
 207         (void)reset_one_mii_phy(phy, 0x1f);
 208
 209         data = __phy_read(phy, 0x1f, MII_BCM5201_MULTIPHY);
 210         data |= MII_BCM5201_MULTIPHY_SERIALMODE;
 211         __phy_write(phy, 0x1f, MII_BCM5201_MULTIPHY, data);
 212
 213         data = phy_read(phy, MII_BCM5400_AUXCONTROL);
 214         data &= ~MII_BCM5400_AUXCONTROL_PWR10BASET;
 215         phy_write(phy, MII_BCM5400_AUXCONTROL, data);
 216
 217         return 0;
 218 }
 219
 220 static int bcm5400_suspend(struct mii_phy* phy)
 221 {
 222 #if 0 /* Commented out in Darwin... someone has those dawn docs ? */
 223         phy_write(phy, MII_BMCR, BMCR_PDOWN);
 224 #endif
 225         return 0;
 226 }
 227
 228 static int bcm5401_init(struct mii_phy* phy)
 229 {
 230         u16 data;
 231         int rev;
 232
 233         rev = phy_read(phy, MII_PHYSID2) & 0x000f;
 234         if (rev == 0 || rev == 3) {
 235                 /* Some revisions of 5401 appear to need this
 236                  * initialisation sequence to disable, according
 237                  * to OF, "tap power management"
 238                  *
 239                  * WARNING ! OF and Darwin don't agree on the
 240                  * register addresses. OF seem to interpret the
 241                  * register numbers below as decimal
 242                  *
 243                  * Note: This should (and does) match tg3_init_5401phy_dsp
 244                  *       in the tg3.c driver. -DaveM
 245                  */
 246                 phy_write(phy, 0x18, 0x0c20);
 247                 phy_write(phy, 0x17, 0x0012);
 248                 phy_write(phy, 0x15, 0x1804);
 249                 phy_write(phy, 0x17, 0x0013);
 250                 phy_write(phy, 0x15, 0x1204);
 251                 phy_write(phy, 0x17, 0x8006);
 252                 phy_write(phy, 0x15, 0x0132);
 253                 phy_write(phy, 0x17, 0x8006);
 254                 phy_write(phy, 0x15, 0x0232);
 255                 phy_write(phy, 0x17, 0x201f);
 256                 phy_write(phy, 0x15, 0x0a20);
 257         }
 258
 259         /* Configure for gigabit full duplex */
 260         data = phy_read(phy, MII_BCM5400_GB_CONTROL);
 261         data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
 262         phy_write(phy, MII_BCM5400_GB_CONTROL, data);
 263
 264         udelay(10);
 265
 266         /* Reset and configure cascaded 10/100 PHY */
 267         (void)reset_one_mii_phy(phy, 0x1f);
 268
 269         data = __phy_read(phy, 0x1f, MII_BCM5201_MULTIPHY);
 270         data |= MII_BCM5201_MULTIPHY_SERIALMODE;
 271         __phy_write(phy, 0x1f, MII_BCM5201_MULTIPHY, data);
 272
 273         return 0;
 274 }
 275
 276 static int bcm5401_suspend(struct mii_phy* phy)
 277 {
 278 #if 0 /* Commented out in Darwin... someone has those dawn docs ? */
 279         phy_write(phy, MII_BMCR, BMCR_PDOWN);
 280 #endif
 281         return 0;
 282 }
 283
 284 static int bcm5411_init(struct mii_phy* phy)
 285 {
 286         u16 data;
 287
 288         /* Here's some more Apple black magic to setup
 289          * some voltage stuffs.
 290          */
 291         phy_write(phy, 0x1c, 0x8c23);
 292         phy_write(phy, 0x1c, 0x8ca3);
 293         phy_write(phy, 0x1c, 0x8c23);
 294
 295         /* Here, Apple seems to want to reset it, do
 296          * it as well
 297          */
 298         phy_write(phy, MII_BMCR, BMCR_RESET);
 299         phy_write(phy, MII_BMCR, 0x1340);
 300
 301         data = phy_read(phy, MII_BCM5400_GB_CONTROL);
 302         data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
 303         phy_write(phy, MII_BCM5400_GB_CONTROL, data);
 304
 305         udelay(10);
 306
 307         /* Reset and configure cascaded 10/100 PHY */
 308         (void)reset_one_mii_phy(phy, 0x1f);
 309
 310         return 0;
 311 }
 312
 313 static int generic_suspend(struct mii_phy* phy)
 314 {
 315         phy_write(phy, MII_BMCR, BMCR_PDOWN);
 316
 317         return 0;
 318 }
 319
 320 static int bcm5421_init(struct mii_phy* phy)
 321 {
 322         u16 data;
 323         unsigned int id;
 324
 325         id = (phy_read(phy, MII_PHYSID1) << 16 | phy_read(phy, MII_PHYSID2));
 326
 327         /* Revision 0 of 5421 needs some fixups */
 328         if (id == 0x002060e0) {
 329                 /* This is borrowed from MacOS
 330                  */
 331                 phy_write(phy, 0x18, 0x1007);
 332                 data = phy_read(phy, 0x18);
 333                 phy_write(phy, 0x18, data | 0x0400);
 334                 phy_write(phy, 0x18, 0x0007);
 335                 data = phy_read(phy, 0x18);
 336                 phy_write(phy, 0x18, data | 0x0800);
 337                 phy_write(phy, 0x17, 0x000a);
 338                 data = phy_read(phy, 0x15);
 339                 phy_write(phy, 0x15, data | 0x0200);
 340         }
 341
 342         /* Pick up some init code from OF for K2 version */
 343         if ((id & 0xfffffff0) == 0x002062e0) {
 344                 phy_write(phy, 4, 0x01e1);
 345                 phy_write(phy, 9, 0x0300);
 346         }
 347
 348         /* Check if we can enable automatic low power */
 349 #ifdef CONFIG_PPC_PMAC
 350         if (phy->platform_data) {
 351                 struct device_node *np = of_get_parent(phy->platform_data);
 352                 int can_low_power = 1;
 353                 if (np == NULL || get_property(np, "no-autolowpower", NULL))
 354                         can_low_power = 0;
 355                 if (can_low_power) {
 356                         /* Enable automatic low-power */
 357                         phy_write(phy, 0x1c, 0x9002);
 358                         phy_write(phy, 0x1c, 0xa821);
 359                         phy_write(phy, 0x1c, 0x941d);
 360                 }
 361         }
 362 #endif /* CONFIG_PPC_PMAC */
 363
 364         return 0;
 365 }
 366
 367 static int bcm5421_enable_fiber(struct mii_phy* phy)
 368 {
 369         /* enable fiber mode */
 370         phy_write(phy, MII_NCONFIG, 0x9020);
 371         /* LEDs active in both modes, autosense prio = fiber */
 372         phy_write(phy, MII_NCONFIG, 0x945f);
 373
 374         /* switch off fibre autoneg */
 375         phy_write(phy, MII_NCONFIG, 0xfc01);
 376         phy_write(phy, 0x0b, 0x0004);
 377
 378         return 0;
 379 }
 380
 381 static int bcm5461_enable_fiber(struct mii_phy* phy)
 382 {
 383         phy_write(phy, MII_NCONFIG, 0xfc0c);
 384         phy_write(phy, MII_BMCR, 0x4140);
 385         phy_write(phy, MII_NCONFIG, 0xfc0b);
 386         phy_write(phy, MII_BMCR, 0x0140);
 387
 388         return 0;
 389 }
 390
 391 static int bcm54xx_setup_aneg(struct mii_phy *phy, u32 advertise)
 392 {
 393         u16 ctl, adv;
 394
 395         phy->autoneg = 1;
 396         phy->speed = SPEED_10;
 397         phy->duplex = DUPLEX_HALF;
 398         phy->pause = 0;
 399         phy->advertising = advertise;
 400
 401         /* Setup standard advertise */
 402         adv = phy_read(phy, MII_ADVERTISE);
 403         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
 404         if (advertise & ADVERTISED_10baseT_Half)
 405                 adv |= ADVERTISE_10HALF;
 406         if (advertise & ADVERTISED_10baseT_Full)
 407                 adv |= ADVERTISE_10FULL;
 408         if (advertise & ADVERTISED_100baseT_Half)
 409                 adv |= ADVERTISE_100HALF;
 410         if (advertise & ADVERTISED_100baseT_Full)
 411                 adv |= ADVERTISE_100FULL;
 412         if (advertise & ADVERTISED_Pause)
 413                 adv |= ADVERTISE_PAUSE_CAP;
 414         if (advertise & ADVERTISED_Asym_Pause)
 415                 adv |= ADVERTISE_PAUSE_ASYM;
 416         phy_write(phy, MII_ADVERTISE, adv);
 417
 418         /* Setup 1000BT advertise */
 419         adv = phy_read(phy, MII_1000BASETCONTROL);
 420         adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP|MII_1000BASETCONTROL_HALFDUPLEXCAP);
 421         if (advertise & SUPPORTED_1000baseT_Half)
 422                 adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
 423         if (advertise & SUPPORTED_1000baseT_Full)
 424                 adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
 425         phy_write(phy, MII_1000BASETCONTROL, adv);
 426
 427         /* Start/Restart aneg */
 428         ctl = phy_read(phy, MII_BMCR);
 429         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
 430         phy_write(phy, MII_BMCR, ctl);
 431
 432         return 0;
 433 }
 434
 435 static int bcm54xx_setup_forced(struct mii_phy *phy, int speed, int fd)
 436 {
 437         u16 ctl;
 438
 439         phy->autoneg = 0;
 440         phy->speed = speed;
 441         phy->duplex = fd;
 442         phy->pause = 0;
 443
 444         ctl = phy_read(phy, MII_BMCR);
 445         ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_SPD2|BMCR_ANENABLE);
 446
 447         /* First reset the PHY */
 448         phy_write(phy, MII_BMCR, ctl | BMCR_RESET);
 449
 450         /* Select speed & duplex */
 451         switch(speed) {
 452         case SPEED_10:
 453                 break;
 454         case SPEED_100:
 455                 ctl |= BMCR_SPEED100;
 456                 break;
 457         case SPEED_1000:
 458                 ctl |= BMCR_SPD2;
 459         }
 460         if (fd == DUPLEX_FULL)
 461                 ctl |= BMCR_FULLDPLX;
 462
 463         // XXX Should we set the sungem to GII now on 1000BT ?
 464
 465         phy_write(phy, MII_BMCR, ctl);
 466
 467         return 0;
 468 }
 469
 470 static int bcm54xx_read_link(struct mii_phy *phy)
 471 {
 472         int link_mode;
 473         u16 val;
 474
 475         if (phy->autoneg) {
 476                 val = phy_read(phy, MII_BCM5400_AUXSTATUS);
 477                 link_mode = ((val & MII_BCM5400_AUXSTATUS_LINKMODE_MASK) >>
 478                              MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT);
 479                 phy->duplex = phy_BCM5400_link_table[link_mode][0] ?
 480                         DUPLEX_FULL : DUPLEX_HALF;
 481                 phy->speed = phy_BCM5400_link_table[link_mode][2] ?
 482                                 SPEED_1000 :
 483                                 (phy_BCM5400_link_table[link_mode][1] ?
 484                                  SPEED_100 : SPEED_10);
 485                 val = phy_read(phy, MII_LPA);
 486                 phy->pause = (phy->duplex == DUPLEX_FULL) &&
 487                         ((val & LPA_PAUSE) != 0);
 488         }
 489         /* On non-aneg, we assume what we put in BMCR is the speed,
 490          * though magic-aneg shouldn't prevent this case from occurring
 491          */
 492
 493         return 0;
 494 }
 495
 496 static int marvell88e1111_init(struct mii_phy* phy)
 497 {
 498         u16 rev;
 499
 500         /* magic init sequence for rev 0 */
 501         rev = phy_read(phy, MII_PHYSID2) & 0x000f;
 502         if (rev == 0) {
 503                 phy_write(phy, 0x1d, 0x000a);
 504                 phy_write(phy, 0x1e, 0x0821);
 505
 506                 phy_write(phy, 0x1d, 0x0006);
 507                 phy_write(phy, 0x1e, 0x8600);
 508
 509                 phy_write(phy, 0x1d, 0x000b);
 510                 phy_write(phy, 0x1e, 0x0100);
 511
 512                 phy_write(phy, 0x1d, 0x0004);
 513                 phy_write(phy, 0x1e, 0x4850);
 514         }
 515         return 0;
 516 }
 517
 518 static int marvell_setup_aneg(struct mii_phy *phy, u32 advertise)
 519 {
 520         u16 ctl, adv;
 521
 522         phy->autoneg = 1;
 523         phy->speed = SPEED_10;
 524         phy->duplex = DUPLEX_HALF;
 525         phy->pause = 0;
 526         phy->advertising = advertise;
 527
 528         /* Setup standard advertise */
 529         adv = phy_read(phy, MII_ADVERTISE);
 530         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
 531         if (advertise & ADVERTISED_10baseT_Half)
 532                 adv |= ADVERTISE_10HALF;
 533         if (advertise & ADVERTISED_10baseT_Full)
 534                 adv |= ADVERTISE_10FULL;
 535         if (advertise & ADVERTISED_100baseT_Half)
 536                 adv |= ADVERTISE_100HALF;
 537         if (advertise & ADVERTISED_100baseT_Full)
 538                 adv |= ADVERTISE_100FULL;
 539         if (advertise & ADVERTISED_Pause)
 540                 adv |= ADVERTISE_PAUSE_CAP;
 541         if (advertise & ADVERTISED_Asym_Pause)
 542                 adv |= ADVERTISE_PAUSE_ASYM;
 543         phy_write(phy, MII_ADVERTISE, adv);
 544
 545         /* Setup 1000BT advertise & enable crossover detect
 546          * XXX How do we advertise 1000BT ? Darwin source is
 547          * confusing here, they read from specific control and
 548          * write to control... Someone has specs for those
 549          * beasts ?
 550          */
 551         adv = phy_read(phy, MII_M1011_PHY_SPEC_CONTROL);
 552         adv |= MII_M1011_PHY_SPEC_CONTROL_AUTO_MDIX;
 553         adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
 554                         MII_1000BASETCONTROL_HALFDUPLEXCAP);
 555         if (advertise & SUPPORTED_1000baseT_Half)
 556                 adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
 557         if (advertise & SUPPORTED_1000baseT_Full)
 558                 adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
 559         phy_write(phy, MII_1000BASETCONTROL, adv);
 560
 561         /* Start/Restart aneg */
 562         ctl = phy_read(phy, MII_BMCR);
 563         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
 564         phy_write(phy, MII_BMCR, ctl);
 565
 566         return 0;
 567 }
 568
 569 static int marvell_setup_forced(struct mii_phy *phy, int speed, int fd)
 570 {
 571         u16 ctl, ctl2;
 572
 573         phy->autoneg = 0;
 574         phy->speed = speed;
 575         phy->duplex = fd;
 576         phy->pause = 0;
 577
 578         ctl = phy_read(phy, MII_BMCR);
 579         ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_SPD2|BMCR_ANENABLE);
 580         ctl |= BMCR_RESET;
 581
 582         /* Select speed & duplex */
 583         switch(speed) {
 584         case SPEED_10:
 585                 break;
 586         case SPEED_100:
 587                 ctl |= BMCR_SPEED100;
 588                 break;
 589         /* I'm not sure about the one below, again, Darwin source is
 590          * quite confusing and I lack chip specs
 591          */
 592         case SPEED_1000:
 593                 ctl |= BMCR_SPD2;
 594         }
 595         if (fd == DUPLEX_FULL)
 596                 ctl |= BMCR_FULLDPLX;
 597
 598         /* Disable crossover. Again, the way Apple does it is strange,
 599          * though I don't assume they are wrong ;)
 600          */
 601         ctl2 = phy_read(phy, MII_M1011_PHY_SPEC_CONTROL);
 602         ctl2 &= ~(MII_M1011_PHY_SPEC_CONTROL_MANUAL_MDIX |
 603                 MII_M1011_PHY_SPEC_CONTROL_AUTO_MDIX |
 604                 MII_1000BASETCONTROL_FULLDUPLEXCAP |
 605                 MII_1000BASETCONTROL_HALFDUPLEXCAP);
 606         if (speed == SPEED_1000)
 607                 ctl2 |= (fd == DUPLEX_FULL) ?
 608                         MII_1000BASETCONTROL_FULLDUPLEXCAP :
 609                         MII_1000BASETCONTROL_HALFDUPLEXCAP;
 610         phy_write(phy, MII_1000BASETCONTROL, ctl2);
 611
 612         // XXX Should we set the sungem to GII now on 1000BT ?
 613
 614         phy_write(phy, MII_BMCR, ctl);
 615
 616         return 0;
 617 }
 618
 619 static int marvell_read_link(struct mii_phy *phy)
 620 {
 621         u16 status, pmask;
 622
 623         if (phy->autoneg) {
 624                 status = phy_read(phy, MII_M1011_PHY_SPEC_STATUS);
 625                 if ((status & MII_M1011_PHY_SPEC_STATUS_RESOLVED) == 0)
 626                         return -EAGAIN;
 627                 if (status & MII_M1011_PHY_SPEC_STATUS_1000)
 628                         phy->speed = SPEED_1000;
 629                 else if (status & MII_M1011_PHY_SPEC_STATUS_100)
 630                         phy->speed = SPEED_100;
 631                 else
 632                         phy->speed = SPEED_10;
 633                 if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
 634                         phy->duplex = DUPLEX_FULL;
 635                 else
 636                         phy->duplex = DUPLEX_HALF;
 637                 pmask = MII_M1011_PHY_SPEC_STATUS_TX_PAUSE |
 638                         MII_M1011_PHY_SPEC_STATUS_RX_PAUSE;
 639                 phy->pause = (status & pmask) == pmask;
 640         }
 641         /* On non-aneg, we assume what we put in BMCR is the speed,
 642          * though magic-aneg shouldn't prevent this case from occurring
 643          */
 644
 645         return 0;
 646 }
 647
 648 static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise)
 649 {
 650         u16 ctl, adv;
 651
 652         phy->autoneg = 1;
 653         phy->speed = SPEED_10;
 654         phy->duplex = DUPLEX_HALF;
 655         phy->pause = 0;
 656         phy->advertising = advertise;
 657
 658         /* Setup standard advertise */
 659         adv = phy_read(phy, MII_ADVERTISE);
 660         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
 661         if (advertise & ADVERTISED_10baseT_Half)
 662                 adv |= ADVERTISE_10HALF;
 663         if (advertise & ADVERTISED_10baseT_Full)
 664                 adv |= ADVERTISE_10FULL;
 665         if (advertise & ADVERTISED_100baseT_Half)
 666                 adv |= ADVERTISE_100HALF;
 667         if (advertise & ADVERTISED_100baseT_Full)
 668                 adv |= ADVERTISE_100FULL;
 669         if (advertise & ADVERTISED_Pause)
 670                 adv |= ADVERTISE_PAUSE_CAP;
 671         if (advertise & ADVERTISED_Asym_Pause)
 672                 adv |= ADVERTISE_PAUSE_ASYM;
 673         phy_write(phy, MII_ADVERTISE, adv);
 674
 675         /* Start/Restart aneg */
 676         ctl = phy_read(phy, MII_BMCR);
 677         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
 678         phy_write(phy, MII_BMCR, ctl);
 679
 680         return 0;
 681 }
 682
 683 static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd)
 684 {
 685         u16 ctl;
 686
 687         phy->autoneg = 0;
 688         phy->speed = speed;
 689         phy->duplex = fd;
 690         phy->pause = 0;
 691
 692         ctl = phy_read(phy, MII_BMCR);
 693         ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_ANENABLE);
 694
 695         /* First reset the PHY */
 696         phy_write(phy, MII_BMCR, ctl | BMCR_RESET);
 697
 698         /* Select speed & duplex */
 699         switch(speed) {
 700         case SPEED_10:
 701                 break;
 702         case SPEED_100:
 703                 ctl |= BMCR_SPEED100;
 704                 break;
 705         case SPEED_1000:
 706         default:
 707                 return -EINVAL;
 708         }
 709         if (fd == DUPLEX_FULL)
 710                 ctl |= BMCR_FULLDPLX;
 711         phy_write(phy, MII_BMCR, ctl);
 712
 713         return 0;
 714 }
 715
 716 static int genmii_poll_link(struct mii_phy *phy)
 717 {
 718         u16 status;
 719
 720         (void)phy_read(phy, MII_BMSR);
 721         status = phy_read(phy, MII_BMSR);
 722         if ((status & BMSR_LSTATUS) == 0)
 723                 return 0;
 724         if (phy->autoneg && !(status & BMSR_ANEGCOMPLETE))
 725                 return 0;
 726         return 1;
 727 }
 728
 729 static int genmii_read_link(struct mii_phy *phy)
 730 {
 731         u16 lpa;
 732
 733         if (phy->autoneg) {
 734                 lpa = phy_read(phy, MII_LPA);
 735
 736                 if (lpa & (LPA_10FULL | LPA_100FULL))
 737                         phy->duplex = DUPLEX_FULL;
 738                 else
 739                         phy->duplex = DUPLEX_HALF;
 740                 if (lpa & (LPA_100FULL | LPA_100HALF))
 741                         phy->speed = SPEED_100;
 742                 else
 743                         phy->speed = SPEED_10;
 744                 phy->pause = (phy->duplex == DUPLEX_FULL) &&
 745                         ((lpa & LPA_PAUSE) != 0);
 746         }
 747         /* On non-aneg, we assume what we put in BMCR is the speed,
 748          * though magic-aneg shouldn't prevent this case from occurring
 749          */
 750
 751          return 0;
 752 }
 753
 754
 755 #define MII_BASIC_FEATURES \
 756         (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |      \
 757          SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |    \
 758          SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII |     \
 759          SUPPORTED_Pause)
 760
 761 /* On gigabit capable PHYs, we advertise Pause support but not asym pause
 762  * support for now as I'm not sure it's supported and Darwin doesn't do
 763  * it neither. --BenH.
 764  */
 765 #define MII_GBIT_FEATURES \
 766         (MII_BASIC_FEATURES |   \
 767          SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)
 768
 769 /* Broadcom BCM 5201 */
 770 static struct mii_phy_ops bcm5201_phy_ops = {
 771         .init           = bcm5201_init,
 772         .suspend        = bcm5201_suspend,
 773         .setup_aneg     = genmii_setup_aneg,
 774         .setup_forced   = genmii_setup_forced,
 775         .poll_link      = genmii_poll_link,
 776         .read_link      = genmii_read_link,
 777 };
 778
 779 static struct mii_phy_def bcm5201_phy_def = {
 780         .phy_id         = 0x00406210,
 781         .phy_id_mask    = 0xfffffff0,
 782         .name           = "BCM5201",
 783         .features       = MII_BASIC_FEATURES,
 784         .magic_aneg     = 1,
 785         .ops            = &bcm5201_phy_ops
 786 };
 787
 788 /* Broadcom BCM 5221 */
 789 static struct mii_phy_ops bcm5221_phy_ops = {
 790         .suspend        = bcm5221_suspend,
 791         .init           = bcm5221_init,
 792         .setup_aneg     = genmii_setup_aneg,
 793         .setup_forced   = genmii_setup_forced,
 794         .poll_link      = genmii_poll_link,
 795         .read_link      = genmii_read_link,
 796 };
 797
 798 static struct mii_phy_def bcm5221_phy_def = {
 799         .phy_id         = 0x004061e0,
 800         .phy_id_mask    = 0xfffffff0,
 801         .name           = "BCM5221",
 802         .features       = MII_BASIC_FEATURES,
 803         .magic_aneg     = 1,
 804         .ops            = &bcm5221_phy_ops
 805 };
 806
 807 /* Broadcom BCM 5241 */
 808 static struct mii_phy_ops bcm5241_phy_ops = {
 809         .suspend        = bcm5241_suspend,
 810         .init           = bcm5241_init,
 811         .setup_aneg     = genmii_setup_aneg,
 812         .setup_forced   = genmii_setup_forced,
 813         .poll_link      = genmii_poll_link,
 814         .read_link      = genmii_read_link,
 815 };
 816 static struct mii_phy_def bcm5241_phy_def = {
 817         .phy_id         = 0x0143bc30,
 818         .phy_id_mask    = 0xfffffff0,
 819         .name           = "BCM5241",
 820         .features       = MII_BASIC_FEATURES,
 821         .magic_aneg     = 1,
 822         .ops            = &bcm5241_phy_ops
 823 };
 824
 825 /* Broadcom BCM 5400 */
 826 static struct mii_phy_ops bcm5400_phy_ops = {
 827         .init           = bcm5400_init,
 828         .suspend        = bcm5400_suspend,
 829         .setup_aneg     = bcm54xx_setup_aneg,
 830         .setup_forced   = bcm54xx_setup_forced,
 831         .poll_link      = genmii_poll_link,
 832         .read_link      = bcm54xx_read_link,
 833 };
 834
 835 static struct mii_phy_def bcm5400_phy_def = {
 836         .phy_id         = 0x00206040,
 837         .phy_id_mask    = 0xfffffff0,
 838         .name           = "BCM5400",
 839         .features       = MII_GBIT_FEATURES,
 840         .magic_aneg     = 1,
 841         .ops            = &bcm5400_phy_ops
 842 };
 843
 844 /* Broadcom BCM 5401 */
 845 static struct mii_phy_ops bcm5401_phy_ops = {
 846         .init           = bcm5401_init,
 847         .suspend        = bcm5401_suspend,
 848         .setup_aneg     = bcm54xx_setup_aneg,
 849         .setup_forced   = bcm54xx_setup_forced,
 850         .poll_link      = genmii_poll_link,
 851         .read_link      = bcm54xx_read_link,
 852 };
 853
 854 static struct mii_phy_def bcm5401_phy_def = {
 855         .phy_id         = 0x00206050,
 856         .phy_id_mask    = 0xfffffff0,
 857         .name           = "BCM5401",
 858         .features       = MII_GBIT_FEATURES,
 859         .magic_aneg     = 1,
 860         .ops            = &bcm5401_phy_ops
 861 };
 862
 863 /* Broadcom BCM 5411 */
 864 static struct mii_phy_ops bcm5411_phy_ops = {
 865         .init           = bcm5411_init,
 866         .suspend        = generic_suspend,
 867         .setup_aneg     = bcm54xx_setup_aneg,
 868         .setup_forced   = bcm54xx_setup_forced,
 869         .poll_link      = genmii_poll_link,
 870         .read_link      = bcm54xx_read_link,
 871 };
 872
 873 static struct mii_phy_def bcm5411_phy_def = {
 874         .phy_id         = 0x00206070,
 875         .phy_id_mask    = 0xfffffff0,
 876         .name           = "BCM5411",
 877         .features       = MII_GBIT_FEATURES,
 878         .magic_aneg     = 1,
 879         .ops            = &bcm5411_phy_ops
 880 };
 881
 882 /* Broadcom BCM 5421 */
 883 static struct mii_phy_ops bcm5421_phy_ops = {
 884         .init           = bcm5421_init,
 885         .suspend        = generic_suspend,
 886         .setup_aneg     = bcm54xx_setup_aneg,
 887         .setup_forced   = bcm54xx_setup_forced,
 888         .poll_link      = genmii_poll_link,
 889         .read_link      = bcm54xx_read_link,
 890         .enable_fiber   = bcm5421_enable_fiber,
 891 };
 892
 893 static struct mii_phy_def bcm5421_phy_def = {
 894         .phy_id         = 0x002060e0,
 895         .phy_id_mask    = 0xfffffff0,
 896         .name           = "BCM5421",
 897         .features       = MII_GBIT_FEATURES,
 898         .magic_aneg     = 1,
 899         .ops            = &bcm5421_phy_ops
 900 };
 901
 902 /* Broadcom BCM 5421 built-in K2 */
 903 static struct mii_phy_ops bcm5421k2_phy_ops = {
 904         .init           = bcm5421_init,
 905         .suspend        = generic_suspend,
 906         .setup_aneg     = bcm54xx_setup_aneg,
 907         .setup_forced   = bcm54xx_setup_forced,
 908         .poll_link      = genmii_poll_link,
 909         .read_link      = bcm54xx_read_link,
 910 };
 911
 912 static struct mii_phy_def bcm5421k2_phy_def = {
 913         .phy_id         = 0x002062e0,
 914         .phy_id_mask    = 0xfffffff0,
 915         .name           = "BCM5421-K2",
 916         .features       = MII_GBIT_FEATURES,
 917         .magic_aneg     = 1,
 918         .ops            = &bcm5421k2_phy_ops
 919 };
 920
 921 static struct mii_phy_ops bcm5461_phy_ops = {
 922         .init           = bcm5421_init,
 923         .suspend        = generic_suspend,
 924         .setup_aneg     = bcm54xx_setup_aneg,
 925         .setup_forced   = bcm54xx_setup_forced,
 926         .poll_link      = genmii_poll_link,
 927         .read_link      = bcm54xx_read_link,
 928         .enable_fiber   = bcm5461_enable_fiber,
 929 };
 930
 931 static struct mii_phy_def bcm5461_phy_def = {
 932         .phy_id         = 0x002060c0,
 933         .phy_id_mask    = 0xfffffff0,
 934         .name           = "BCM5461",
 935         .features       = MII_GBIT_FEATURES,
 936         .magic_aneg     = 1,
 937         .ops            = &bcm5461_phy_ops
 938 };
 939
 940 /* Broadcom BCM 5462 built-in Vesta */
 941 static struct mii_phy_ops bcm5462V_phy_ops = {
 942         .init           = bcm5421_init,
 943         .suspend        = generic_suspend,
 944         .setup_aneg     = bcm54xx_setup_aneg,
 945         .setup_forced   = bcm54xx_setup_forced,
 946         .poll_link      = genmii_poll_link,
 947         .read_link      = bcm54xx_read_link,
 948 };
 949
 950 static struct mii_phy_def bcm5462V_phy_def = {
 951         .phy_id         = 0x002060d0,
 952         .phy_id_mask    = 0xfffffff0,
 953         .name           = "BCM5462-Vesta",
 954         .features       = MII_GBIT_FEATURES,
 955         .magic_aneg     = 1,
 956         .ops            = &bcm5462V_phy_ops
 957 };
 958
 959 /* Marvell 88E1101 amd 88E1111 */
 960 static struct mii_phy_ops marvell88e1101_phy_ops = {
 961         .suspend        = generic_suspend,
 962         .setup_aneg     = marvell_setup_aneg,
 963         .setup_forced   = marvell_setup_forced,
 964         .poll_link      = genmii_poll_link,
 965         .read_link      = marvell_read_link
 966 };
 967
 968 static struct mii_phy_ops marvell88e1111_phy_ops = {
 969         .init           = marvell88e1111_init,
 970         .suspend        = generic_suspend,
 971         .setup_aneg     = marvell_setup_aneg,
 972         .setup_forced   = marvell_setup_forced,
 973         .poll_link      = genmii_poll_link,
 974         .read_link      = marvell_read_link
 975 };
 976
 977 /* two revs in darwin for the 88e1101 ... I could use a datasheet
 978  * to get the proper names...
 979  */
 980 static struct mii_phy_def marvell88e1101v1_phy_def = {
 981         .phy_id         = 0x01410c20,
 982         .phy_id_mask    = 0xfffffff0,
 983         .name           = "Marvell 88E1101v1",
 984         .features       = MII_GBIT_FEATURES,
 985         .magic_aneg     = 1,
 986         .ops            = &marvell88e1101_phy_ops
 987 };
 988 static struct mii_phy_def marvell88e1101v2_phy_def = {
 989         .phy_id         = 0x01410c60,
 990         .phy_id_mask    = 0xfffffff0,
 991         .name           = "Marvell 88E1101v2",
 992         .features       = MII_GBIT_FEATURES,
 993         .magic_aneg     = 1,
 994         .ops            = &marvell88e1101_phy_ops
 995 };
 996 static struct mii_phy_def marvell88e1111_phy_def = {
 997         .phy_id         = 0x01410cc0,
 998         .phy_id_mask    = 0xfffffff0,
 999         .name           = "Marvell 88E1111",
1000         .features       = MII_GBIT_FEATURES,
1001         .magic_aneg     = 1,
1002         .ops            = &marvell88e1111_phy_ops
1003 };
1004
1005 /* Generic implementation for most 10/100 PHYs */
1006 static struct mii_phy_ops generic_phy_ops = {
1007         .setup_aneg     = genmii_setup_aneg,
1008         .setup_forced   = genmii_setup_forced,
1009         .poll_link      = genmii_poll_link,
1010         .read_link      = genmii_read_link
1011 };
1012
1013 static struct mii_phy_def genmii_phy_def = {
1014         .phy_id         = 0x00000000,
1015         .phy_id_mask    = 0x00000000,
1016         .name           = "Generic MII",
1017         .features       = MII_BASIC_FEATURES,
1018         .magic_aneg     = 0,
1019         .ops            = &generic_phy_ops
1020 };
1021
1022 static struct mii_phy_def* mii_phy_table[] = {
1023         &bcm5201_phy_def,
1024         &bcm5221_phy_def,
1025         &bcm5241_phy_def,
1026         &bcm5400_phy_def,
1027         &bcm5401_phy_def,
1028         &bcm5411_phy_def,
1029         &bcm5421_phy_def,
1030         &bcm5421k2_phy_def,
1031         &bcm5461_phy_def,
1032         &bcm5462V_phy_def,
1033         &marvell88e1101v1_phy_def,
1034         &marvell88e1101v2_phy_def,
1035         &marvell88e1111_phy_def,
1036         &genmii_phy_def,
1037         NULL
1038 };
1039
1040 int mii_phy_probe(struct mii_phy *phy, int mii_id)
1041 {
1042         int rc;
1043         u32 id;
1044         struct mii_phy_def* def;
1045         int i;
1046
1047         /* We do not reset the mii_phy structure as the driver
1048          * may re-probe the PHY regulary
1049          */
1050         phy->mii_id = mii_id;
1051
1052         /* Take PHY out of isloate mode and reset it. */
1053         rc = reset_one_mii_phy(phy, mii_id);
1054         if (rc)
1055                 goto fail;
1056
1057         /* Read ID and find matching entry */
1058         id = (phy_read(phy, MII_PHYSID1) << 16 | phy_read(phy, MII_PHYSID2));
1059         printk(KERN_DEBUG "PHY ID: %x, addr: %x\n", id, mii_id);
1060         for (i=0; (def = mii_phy_table[i]) != NULL; i++)
1061                 if ((id & def->phy_id_mask) == def->phy_id)
1062                         break;
1063         /* Should never be NULL (we have a generic entry), but... */
1064         if (def == NULL)
1065                 goto fail;
1066
1067         phy->def = def;
1068
1069         return 0;
1070 fail:
1071         phy->speed = 0;
1072         phy->duplex = 0;
1073         phy->pause = 0;
1074         phy->advertising = 0;
1075         return -ENODEV;
1076 }
1077
1078 EXPORT_SYMBOL(mii_phy_probe);
1079 MODULE_LICENSE("GPL");
1080