drivers/net/tsi108_eth.c

   1 /*******************************************************************************
   2
   3   Copyright(c) 2006 Tundra Semiconductor Corporation.
   4
   5   This program is free software; you can redistribute it and/or modify it
   6   under the terms of the GNU General Public License as published by the Free
   7   Software Foundation; either version 2 of the License, or (at your option)
   8   any later version.
   9
  10   This program is distributed in the hope that it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc., 59
  17   Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 *******************************************************************************/
  20
  21 /* This driver is based on the driver code originally developed
  22  * for the Intel IOC80314 (ForestLake) Gigabit Ethernet by
  23  * scott.wood@timesys.com  * Copyright (C) 2003 TimeSys Corporation
  24  *
  25  * Currently changes from original version are:
  26  * - porting to Tsi108-based platform and kernel 2.6 (kong.lai@tundra.com)
  27  * - modifications to handle two ports independently and support for
  28  *   additional PHY devices (alexandre.bounine@tundra.com)
  29  * - Get hardware information from platform device. (tie-fei.zang@freescale.com)
  30  *
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/types.h>
  35 #include <linux/init.h>
  36 #include <linux/net.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/skbuff.h>
  41 #include <linux/slab.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/delay.h>
  44 #include <linux/crc32.h>
  45 #include <linux/mii.h>
  46 #include <linux/device.h>
  47 #include <linux/pci.h>
  48 #include <linux/rtnetlink.h>
  49 #include <linux/timer.h>
  50 #include <linux/platform_device.h>
  51
  52 #include <asm/system.h>
  53 #include <asm/io.h>
  54 #include <asm/tsi108.h>
  55
  56 #include "tsi108_eth.h"
  57
  58 #define MII_READ_DELAY 10000    /* max link wait time in msec */
  59
  60 #define TSI108_RXRING_LEN     256
  61
  62 /* NOTE: The driver currently does not support receiving packets
  63  * larger than the buffer size, so don't decrease this (unless you
  64  * want to add such support).
  65  */
  66 #define TSI108_RXBUF_SIZE     1536
  67
  68 #define TSI108_TXRING_LEN     256
  69
  70 #define TSI108_TX_INT_FREQ    64
  71
  72 /* Check the phy status every half a second. */
  73 #define CHECK_PHY_INTERVAL (HZ/2)
  74
  75 static int tsi108_init_one(struct platform_device *pdev);
  76 static int tsi108_ether_remove(struct platform_device *pdev);
  77
  78 struct tsi108_prv_data {
  79         void  __iomem *regs;    /* Base of normal regs */
  80         void  __iomem *phyregs; /* Base of register bank used for PHY access */
  81
  82         struct net_device *dev;
  83         struct napi_struct napi;
  84
  85         unsigned int phy;               /* Index of PHY for this interface */
  86         unsigned int irq_num;
  87         unsigned int id;
  88         unsigned int phy_type;
  89
  90         struct timer_list timer;/* Timer that triggers the check phy function */
  91         unsigned int rxtail;    /* Next entry in rxring to read */
  92         unsigned int rxhead;    /* Next entry in rxring to give a new buffer */
  93         unsigned int rxfree;    /* Number of free, allocated RX buffers */
  94
  95         unsigned int rxpending; /* Non-zero if there are still descriptors
  96                                  * to be processed from a previous descriptor
  97                                  * interrupt condition that has been cleared */
  98
  99         unsigned int txtail;    /* Next TX descriptor to check status on */
 100         unsigned int txhead;    /* Next TX descriptor to use */
 101
 102         /* Number of free TX descriptors.  This could be calculated from
 103          * rxhead and rxtail if one descriptor were left unused to disambiguate
 104          * full and empty conditions, but it's simpler to just keep track
 105          * explicitly. */
 106
 107         unsigned int txfree;
 108
 109         unsigned int phy_ok;            /* The PHY is currently powered on. */
 110
 111         /* PHY status (duplex is 1 for half, 2 for full,
 112          * so that the default 0 indicates that neither has
 113          * yet been configured). */
 114
 115         unsigned int link_up;
 116         unsigned int speed;
 117         unsigned int duplex;
 118
 119         tx_desc *txring;
 120         rx_desc *rxring;
 121         struct sk_buff *txskbs[TSI108_TXRING_LEN];
 122         struct sk_buff *rxskbs[TSI108_RXRING_LEN];
 123
 124         dma_addr_t txdma, rxdma;
 125
 126         /* txlock nests in misclock and phy_lock */
 127
 128         spinlock_t txlock, misclock;
 129
 130         /* stats is used to hold the upper bits of each hardware counter,
 131          * and tmpstats is used to hold the full values for returning
 132          * to the caller of get_stats().  They must be separate in case
 133          * an overflow interrupt occurs before the stats are consumed.
 134          */
 135
 136         struct net_device_stats stats;
 137         struct net_device_stats tmpstats;
 138
 139         /* These stats are kept separate in hardware, thus require individual
 140          * fields for handling carry.  They are combined in get_stats.
 141          */
 142
 143         unsigned long rx_fcs;   /* Add to rx_frame_errors */
 144         unsigned long rx_short_fcs;     /* Add to rx_frame_errors */
 145         unsigned long rx_long_fcs;      /* Add to rx_frame_errors */
 146         unsigned long rx_underruns;     /* Add to rx_length_errors */
 147         unsigned long rx_overruns;      /* Add to rx_length_errors */
 148
 149         unsigned long tx_coll_abort;    /* Add to tx_aborted_errors/collisions */
 150         unsigned long tx_pause_drop;    /* Add to tx_aborted_errors */
 151
 152         unsigned long mc_hash[16];
 153         u32 msg_enable;                 /* debug message level */
 154         struct mii_if_info mii_if;
 155         unsigned int init_media;
 156 };
 157
 158 /* Structure for a device driver */
 159
 160 static struct platform_driver tsi_eth_driver = {
 161         .probe = tsi108_init_one,
 162         .remove = tsi108_ether_remove,
 163         .driver = {
 164                 .name = "tsi-ethernet",
 165         },
 166 };
 167
 168 static void tsi108_timed_checker(unsigned long dev_ptr);
 169
 170 static void dump_eth_one(struct net_device *dev)
 171 {
 172         struct tsi108_prv_data *data = netdev_priv(dev);
 173
 174         printk("Dumping %s...\n", dev->name);
 175         printk("intstat %x intmask %x phy_ok %d"
 176                " link %d speed %d duplex %d\n",
 177                TSI_READ(TSI108_EC_INTSTAT),
 178                TSI_READ(TSI108_EC_INTMASK), data->phy_ok,
 179                data->link_up, data->speed, data->duplex);
 180
 181         printk("TX: head %d, tail %d, free %d, stat %x, estat %x, err %x\n",
 182                data->txhead, data->txtail, data->txfree,
 183                TSI_READ(TSI108_EC_TXSTAT),
 184                TSI_READ(TSI108_EC_TXESTAT),
 185                TSI_READ(TSI108_EC_TXERR));
 186
 187         printk("RX: head %d, tail %d, free %d, stat %x,"
 188                " estat %x, err %x, pending %d\n\n",
 189                data->rxhead, data->rxtail, data->rxfree,
 190                TSI_READ(TSI108_EC_RXSTAT),
 191                TSI_READ(TSI108_EC_RXESTAT),
 192                TSI_READ(TSI108_EC_RXERR), data->rxpending);
 193 }
 194
 195 /* Synchronization is needed between the thread and up/down events.
 196  * Note that the PHY is accessed through the same registers for both
 197  * interfaces, so this can't be made interface-specific.
 198  */
 199
 200 static DEFINE_SPINLOCK(phy_lock);
 201
 202 static int tsi108_read_mii(struct tsi108_prv_data *data, int reg)
 203 {
 204         unsigned i;
 205
 206         TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
 207                                 (data->phy << TSI108_MAC_MII_ADDR_PHY) |
 208                                 (reg << TSI108_MAC_MII_ADDR_REG));
 209         TSI_WRITE_PHY(TSI108_MAC_MII_CMD, 0);
 210         TSI_WRITE_PHY(TSI108_MAC_MII_CMD, TSI108_MAC_MII_CMD_READ);
 211         for (i = 0; i < 100; i++) {
 212                 if (!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
 213                       (TSI108_MAC_MII_IND_NOTVALID | TSI108_MAC_MII_IND_BUSY)))
 214                         break;
 215                 udelay(10);
 216         }
 217
 218         if (i == 100)
 219                 return 0xffff;
 220         else
 221                 return (TSI_READ_PHY(TSI108_MAC_MII_DATAIN));
 222 }
 223
 224 static void tsi108_write_mii(struct tsi108_prv_data *data,
 225                                 int reg, u16 val)
 226 {
 227         unsigned i = 100;
 228         TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
 229                                 (data->phy << TSI108_MAC_MII_ADDR_PHY) |
 230                                 (reg << TSI108_MAC_MII_ADDR_REG));
 231         TSI_WRITE_PHY(TSI108_MAC_MII_DATAOUT, val);
 232         while (i--) {
 233                 if(!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
 234                         TSI108_MAC_MII_IND_BUSY))
 235                         break;
 236                 udelay(10);
 237         }
 238 }
 239
 240 static int tsi108_mdio_read(struct net_device *dev, int addr, int reg)
 241 {
 242         struct tsi108_prv_data *data = netdev_priv(dev);
 243         return tsi108_read_mii(data, reg);
 244 }
 245
 246 static void tsi108_mdio_write(struct net_device *dev, int addr, int reg, int val)
 247 {
 248         struct tsi108_prv_data *data = netdev_priv(dev);
 249         tsi108_write_mii(data, reg, val);
 250 }
 251
 252 static inline void tsi108_write_tbi(struct tsi108_prv_data *data,
 253                                         int reg, u16 val)
 254 {
 255         unsigned i = 1000;
 256         TSI_WRITE(TSI108_MAC_MII_ADDR,
 257                              (0x1e << TSI108_MAC_MII_ADDR_PHY)
 258                              | (reg << TSI108_MAC_MII_ADDR_REG));
 259         TSI_WRITE(TSI108_MAC_MII_DATAOUT, val);
 260         while(i--) {
 261                 if(!(TSI_READ(TSI108_MAC_MII_IND) & TSI108_MAC_MII_IND_BUSY))
 262                         return;
 263                 udelay(10);
 264         }
 265         printk(KERN_ERR "%s function time out \n", __FUNCTION__);
 266 }
 267
 268 static int mii_speed(struct mii_if_info *mii)
 269 {
 270         int advert, lpa, val, media;
 271         int lpa2 = 0;
 272         int speed;
 273
 274         if (!mii_link_ok(mii))
 275                 return 0;
 276
 277         val = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_BMSR);
 278         if ((val & BMSR_ANEGCOMPLETE) == 0)
 279                 return 0;
 280
 281         advert = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_ADVERTISE);
 282         lpa = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_LPA);
 283         media = mii_nway_result(advert & lpa);
 284
 285         if (mii->supports_gmii)
 286                 lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
 287
 288         speed = lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 :
 289                         (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? 100 : 10);
 290         return speed;
 291 }
 292
 293 static void tsi108_check_phy(struct net_device *dev)
 294 {
 295         struct tsi108_prv_data *data = netdev_priv(dev);
 296         u32 mac_cfg2_reg, portctrl_reg;
 297         u32 duplex;
 298         u32 speed;
 299         unsigned long flags;
 300
 301         spin_lock_irqsave(&phy_lock, flags);
 302
 303         if (!data->phy_ok)
 304                 goto out;
 305
 306         duplex = mii_check_media(&data->mii_if, netif_msg_link(data), data->init_media);
 307         data->init_media = 0;
 308
 309         if (netif_carrier_ok(dev)) {
 310
 311                 speed = mii_speed(&data->mii_if);
 312
 313                 if ((speed != data->speed) || duplex) {
 314
 315                         mac_cfg2_reg = TSI_READ(TSI108_MAC_CFG2);
 316                         portctrl_reg = TSI_READ(TSI108_EC_PORTCTRL);
 317
 318                         mac_cfg2_reg &= ~TSI108_MAC_CFG2_IFACE_MASK;
 319
 320                         if (speed == 1000) {
 321                                 mac_cfg2_reg |= TSI108_MAC_CFG2_GIG;
 322                                 portctrl_reg &= ~TSI108_EC_PORTCTRL_NOGIG;
 323                         } else {
 324                                 mac_cfg2_reg |= TSI108_MAC_CFG2_NOGIG;
 325                                 portctrl_reg |= TSI108_EC_PORTCTRL_NOGIG;
 326                         }
 327
 328                         data->speed = speed;
 329
 330                         if (data->mii_if.full_duplex) {
 331                                 mac_cfg2_reg |= TSI108_MAC_CFG2_FULLDUPLEX;
 332                                 portctrl_reg &= ~TSI108_EC_PORTCTRL_HALFDUPLEX;
 333                                 data->duplex = 2;
 334                         } else {
 335                                 mac_cfg2_reg &= ~TSI108_MAC_CFG2_FULLDUPLEX;
 336                                 portctrl_reg |= TSI108_EC_PORTCTRL_HALFDUPLEX;
 337                                 data->duplex = 1;
 338                         }
 339
 340                         TSI_WRITE(TSI108_MAC_CFG2, mac_cfg2_reg);
 341                         TSI_WRITE(TSI108_EC_PORTCTRL, portctrl_reg);
 342                 }
 343
 344                 if (data->link_up == 0) {
 345                         /* The manual says it can take 3-4 usecs for the speed change
 346                          * to take effect.
 347                          */
 348                         udelay(5);
 349
 350                         spin_lock(&data->txlock);
 351                         if (is_valid_ether_addr(dev->dev_addr) && data->txfree)
 352                                 netif_wake_queue(dev);
 353
 354                         data->link_up = 1;
 355                         spin_unlock(&data->txlock);
 356                 }
 357         } else {
 358                 if (data->link_up == 1) {
 359                         netif_stop_queue(dev);
 360                         data->link_up = 0;
 361                         printk(KERN_NOTICE "%s : link is down\n", dev->name);
 362                 }
 363
 364                 goto out;
 365         }
 366
 367
 368 out:
 369         spin_unlock_irqrestore(&phy_lock, flags);
 370 }
 371
 372 static inline void
 373 tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift,
 374                       unsigned long *upper)
 375 {
 376         if (carry & carry_bit)
 377                 *upper += carry_shift;
 378 }
 379
 380 static void tsi108_stat_carry(struct net_device *dev)
 381 {
 382         struct tsi108_prv_data *data = netdev_priv(dev);
 383         u32 carry1, carry2;
 384
 385         spin_lock_irq(&data->misclock);
 386
 387         carry1 = TSI_READ(TSI108_STAT_CARRY1);
 388         carry2 = TSI_READ(TSI108_STAT_CARRY2);
 389
 390         TSI_WRITE(TSI108_STAT_CARRY1, carry1);
 391         TSI_WRITE(TSI108_STAT_CARRY2, carry2);
 392
 393         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXBYTES,
 394                               TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
 395
 396         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXPKTS,
 397                               TSI108_STAT_RXPKTS_CARRY,
 398                               &data->stats.rx_packets);
 399
 400         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFCS,
 401                               TSI108_STAT_RXFCS_CARRY, &data->rx_fcs);
 402
 403         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXMCAST,
 404                               TSI108_STAT_RXMCAST_CARRY,
 405                               &data->stats.multicast);
 406
 407         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXALIGN,
 408                               TSI108_STAT_RXALIGN_CARRY,
 409                               &data->stats.rx_frame_errors);
 410
 411         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXLENGTH,
 412                               TSI108_STAT_RXLENGTH_CARRY,
 413                               &data->stats.rx_length_errors);
 414
 415         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXRUNT,
 416                               TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
 417
 418         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJUMBO,
 419                               TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
 420
 421         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFRAG,
 422                               TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
 423
 424         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJABBER,
 425                               TSI108_STAT_RXJABBER_CARRY, &data->rx_long_fcs);
 426
 427         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXDROP,
 428                               TSI108_STAT_RXDROP_CARRY,
 429                               &data->stats.rx_missed_errors);
 430
 431         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXBYTES,
 432                               TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
 433
 434         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPKTS,
 435                               TSI108_STAT_TXPKTS_CARRY,
 436                               &data->stats.tx_packets);
 437
 438         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXDEF,
 439                               TSI108_STAT_TXEXDEF_CARRY,
 440                               &data->stats.tx_aborted_errors);
 441
 442         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXCOL,
 443                               TSI108_STAT_TXEXCOL_CARRY, &data->tx_coll_abort);
 444
 445         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXTCOL,
 446                               TSI108_STAT_TXTCOL_CARRY,
 447                               &data->stats.collisions);
 448
 449         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPAUSE,
 450                               TSI108_STAT_TXPAUSEDROP_CARRY,
 451                               &data->tx_pause_drop);
 452
 453         spin_unlock_irq(&data->misclock);
 454 }
 455
 456 /* Read a stat counter atomically with respect to carries.
 457  * data->misclock must be held.
 458  */
 459 static inline unsigned long
 460 tsi108_read_stat(struct tsi108_prv_data * data, int reg, int carry_bit,
 461                  int carry_shift, unsigned long *upper)
 462 {
 463         int carryreg;
 464         unsigned long val;
 465
 466         if (reg < 0xb0)
 467                 carryreg = TSI108_STAT_CARRY1;
 468         else
 469                 carryreg = TSI108_STAT_CARRY2;
 470
 471       again:
 472         val = TSI_READ(reg) | *upper;
 473
 474         /* Check to see if it overflowed, but the interrupt hasn't
 475          * been serviced yet.  If so, handle the carry here, and
 476          * try again.
 477          */
 478
 479         if (unlikely(TSI_READ(carryreg) & carry_bit)) {
 480                 *upper += carry_shift;
 481                 TSI_WRITE(carryreg, carry_bit);
 482                 goto again;
 483         }
 484
 485         return val;
 486 }
 487
 488 static struct net_device_stats *tsi108_get_stats(struct net_device *dev)
 489 {
 490         unsigned long excol;
 491
 492         struct tsi108_prv_data *data = netdev_priv(dev);
 493         spin_lock_irq(&data->misclock);
 494
 495         data->tmpstats.rx_packets =
 496             tsi108_read_stat(data, TSI108_STAT_RXPKTS,
 497                              TSI108_STAT_CARRY1_RXPKTS,
 498                              TSI108_STAT_RXPKTS_CARRY, &data->stats.rx_packets);
 499
 500         data->tmpstats.tx_packets =
 501             tsi108_read_stat(data, TSI108_STAT_TXPKTS,
 502                              TSI108_STAT_CARRY2_TXPKTS,
 503                              TSI108_STAT_TXPKTS_CARRY, &data->stats.tx_packets);
 504
 505         data->tmpstats.rx_bytes =
 506             tsi108_read_stat(data, TSI108_STAT_RXBYTES,
 507                              TSI108_STAT_CARRY1_RXBYTES,
 508                              TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
 509
 510         data->tmpstats.tx_bytes =
 511             tsi108_read_stat(data, TSI108_STAT_TXBYTES,
 512                              TSI108_STAT_CARRY2_TXBYTES,
 513                              TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
 514
 515         data->tmpstats.multicast =
 516             tsi108_read_stat(data, TSI108_STAT_RXMCAST,
 517                              TSI108_STAT_CARRY1_RXMCAST,
 518                              TSI108_STAT_RXMCAST_CARRY, &data->stats.multicast);
 519
 520         excol = tsi108_read_stat(data, TSI108_STAT_TXEXCOL,
 521                                  TSI108_STAT_CARRY2_TXEXCOL,
 522                                  TSI108_STAT_TXEXCOL_CARRY,
 523                                  &data->tx_coll_abort);
 524
 525         data->tmpstats.collisions =
 526             tsi108_read_stat(data, TSI108_STAT_TXTCOL,
 527                              TSI108_STAT_CARRY2_TXTCOL,
 528                              TSI108_STAT_TXTCOL_CARRY, &data->stats.collisions);
 529
 530         data->tmpstats.collisions += excol;
 531
 532         data->tmpstats.rx_length_errors =
 533             tsi108_read_stat(data, TSI108_STAT_RXLENGTH,
 534                              TSI108_STAT_CARRY1_RXLENGTH,
 535                              TSI108_STAT_RXLENGTH_CARRY,
 536                              &data->stats.rx_length_errors);
 537
 538         data->tmpstats.rx_length_errors +=
 539             tsi108_read_stat(data, TSI108_STAT_RXRUNT,
 540                              TSI108_STAT_CARRY1_RXRUNT,
 541                              TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
 542
 543         data->tmpstats.rx_length_errors +=
 544             tsi108_read_stat(data, TSI108_STAT_RXJUMBO,
 545                              TSI108_STAT_CARRY1_RXJUMBO,
 546                              TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
 547
 548         data->tmpstats.rx_frame_errors =
 549             tsi108_read_stat(data, TSI108_STAT_RXALIGN,
 550                              TSI108_STAT_CARRY1_RXALIGN,
 551                              TSI108_STAT_RXALIGN_CARRY,
 552                              &data->stats.rx_frame_errors);
 553
 554         data->tmpstats.rx_frame_errors +=
 555             tsi108_read_stat(data, TSI108_STAT_RXFCS,
 556                              TSI108_STAT_CARRY1_RXFCS, TSI108_STAT_RXFCS_CARRY,
 557                              &data->rx_fcs);
 558
 559         data->tmpstats.rx_frame_errors +=
 560             tsi108_read_stat(data, TSI108_STAT_RXFRAG,
 561                              TSI108_STAT_CARRY1_RXFRAG,
 562                              TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
 563
 564         data->tmpstats.rx_missed_errors =
 565             tsi108_read_stat(data, TSI108_STAT_RXDROP,
 566                              TSI108_STAT_CARRY1_RXDROP,
 567                              TSI108_STAT_RXDROP_CARRY,
 568                              &data->stats.rx_missed_errors);
 569
 570         /* These three are maintained by software. */
 571         data->tmpstats.rx_fifo_errors = data->stats.rx_fifo_errors;
 572         data->tmpstats.rx_crc_errors = data->stats.rx_crc_errors;
 573
 574         data->tmpstats.tx_aborted_errors =
 575             tsi108_read_stat(data, TSI108_STAT_TXEXDEF,
 576                              TSI108_STAT_CARRY2_TXEXDEF,
 577                              TSI108_STAT_TXEXDEF_CARRY,
 578                              &data->stats.tx_aborted_errors);
 579
 580         data->tmpstats.tx_aborted_errors +=
 581             tsi108_read_stat(data, TSI108_STAT_TXPAUSEDROP,
 582                              TSI108_STAT_CARRY2_TXPAUSE,
 583                              TSI108_STAT_TXPAUSEDROP_CARRY,
 584                              &data->tx_pause_drop);
 585
 586         data->tmpstats.tx_aborted_errors += excol;
 587
 588         data->tmpstats.tx_errors = data->tmpstats.tx_aborted_errors;
 589         data->tmpstats.rx_errors = data->tmpstats.rx_length_errors +
 590             data->tmpstats.rx_crc_errors +
 591             data->tmpstats.rx_frame_errors +
 592             data->tmpstats.rx_fifo_errors + data->tmpstats.rx_missed_errors;
 593
 594         spin_unlock_irq(&data->misclock);
 595         return &data->tmpstats;
 596 }
 597
 598 static void tsi108_restart_rx(struct tsi108_prv_data * data, struct net_device *dev)
 599 {
 600         TSI_WRITE(TSI108_EC_RXQ_PTRHIGH,
 601                              TSI108_EC_RXQ_PTRHIGH_VALID);
 602
 603         TSI_WRITE(TSI108_EC_RXCTRL, TSI108_EC_RXCTRL_GO
 604                              | TSI108_EC_RXCTRL_QUEUE0);
 605 }
 606
 607 static void tsi108_restart_tx(struct tsi108_prv_data * data)
 608 {
 609         TSI_WRITE(TSI108_EC_TXQ_PTRHIGH,
 610                              TSI108_EC_TXQ_PTRHIGH_VALID);
 611
 612         TSI_WRITE(TSI108_EC_TXCTRL, TSI108_EC_TXCTRL_IDLEINT |
 613                              TSI108_EC_TXCTRL_GO | TSI108_EC_TXCTRL_QUEUE0);
 614 }
 615
 616 /* txlock must be held by caller, with IRQs disabled, and
 617  * with permission to re-enable them when the lock is dropped.
 618  */
 619 static void tsi108_complete_tx(struct net_device *dev)
 620 {
 621         struct tsi108_prv_data *data = netdev_priv(dev);
 622         int tx;
 623         struct sk_buff *skb;
 624         int release = 0;
 625
 626         while (!data->txfree || data->txhead != data->txtail) {
 627                 tx = data->txtail;
 628
 629                 if (data->txring[tx].misc & TSI108_TX_OWN)
 630                         break;
 631
 632                 skb = data->txskbs[tx];
 633
 634                 if (!(data->txring[tx].misc & TSI108_TX_OK))
 635                         printk("%s: bad tx packet, misc %x\n",
 636                                dev->name, data->txring[tx].misc);
 637
 638                 data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
 639                 data->txfree++;
 640
 641                 if (data->txring[tx].misc & TSI108_TX_EOF) {
 642                         dev_kfree_skb_any(skb);
 643                         release++;
 644                 }
 645         }
 646
 647         if (release) {
 648                 if (is_valid_ether_addr(dev->dev_addr) && data->link_up)
 649                         netif_wake_queue(dev);
 650         }
 651 }
 652
 653 static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev)
 654 {
 655         struct tsi108_prv_data *data = netdev_priv(dev);
 656         int frags = skb_shinfo(skb)->nr_frags + 1;
 657         int i;
 658
 659         if (!data->phy_ok && net_ratelimit())
 660                 printk(KERN_ERR "%s: Transmit while PHY is down!\n", dev->name);
 661
 662         if (!data->link_up) {
 663                 printk(KERN_ERR "%s: Transmit while link is down!\n",
 664                        dev->name);
 665                 netif_stop_queue(dev);
 666                 return NETDEV_TX_BUSY;
 667         }
 668
 669         if (data->txfree < MAX_SKB_FRAGS + 1) {
 670                 netif_stop_queue(dev);
 671
 672                 if (net_ratelimit())
 673                         printk(KERN_ERR "%s: Transmit with full tx ring!\n",
 674                                dev->name);
 675                 return NETDEV_TX_BUSY;
 676         }
 677
 678         if (data->txfree - frags < MAX_SKB_FRAGS + 1) {
 679                 netif_stop_queue(dev);
 680         }
 681
 682         spin_lock_irq(&data->txlock);
 683
 684         for (i = 0; i < frags; i++) {
 685                 int misc = 0;
 686                 int tx = data->txhead;
 687
 688                 /* This is done to mark every TSI108_TX_INT_FREQ tx buffers with
 689                  * the interrupt bit.  TX descriptor-complete interrupts are
 690                  * enabled when the queue fills up, and masked when there is
 691                  * still free space.  This way, when saturating the outbound
 692                  * link, the tx interrupts are kept to a reasonable level.
 693                  * When the queue is not full, reclamation of skbs still occurs
 694                  * as new packets are transmitted, or on a queue-empty
 695                  * interrupt.
 696                  */
 697
 698                 if ((tx % TSI108_TX_INT_FREQ == 0) &&
 699                     ((TSI108_TXRING_LEN - data->txfree) >= TSI108_TX_INT_FREQ))
 700                         misc = TSI108_TX_INT;
 701
 702                 data->txskbs[tx] = skb;
 703
 704                 if (i == 0) {
 705                         data->txring[tx].buf0 = dma_map_single(NULL, skb->data,
 706                                         skb->len - skb->data_len, DMA_TO_DEVICE);
 707                         data->txring[tx].len = skb->len - skb->data_len;
 708                         misc |= TSI108_TX_SOF;
 709                 } else {
 710                         skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
 711
 712                         data->txring[tx].buf0 =
 713                             dma_map_page(NULL, frag->page, frag->page_offset,
 714                                             frag->size, DMA_TO_DEVICE);
 715                         data->txring[tx].len = frag->size;
 716                 }
 717
 718                 if (i == frags - 1)
 719                         misc |= TSI108_TX_EOF;
 720
 721                 if (netif_msg_pktdata(data)) {
 722                         int i;
 723                         printk("%s: Tx Frame contents (%d)\n", dev->name,
 724                                skb->len);
 725                         for (i = 0; i < skb->len; i++)
 726                                 printk(" %2.2x", skb->data[i]);
 727                         printk(".\n");
 728                 }
 729                 data->txring[tx].misc = misc | TSI108_TX_OWN;
 730
 731                 data->txhead = (data->txhead + 1) % TSI108_TXRING_LEN;
 732                 data->txfree--;
 733         }
 734
 735         tsi108_complete_tx(dev);
 736
 737         /* This must be done after the check for completed tx descriptors,
 738          * so that the tail pointer is correct.
 739          */
 740
 741         if (!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_QUEUE0))
 742                 tsi108_restart_tx(data);
 743
 744         spin_unlock_irq(&data->txlock);
 745         return NETDEV_TX_OK;
 746 }
 747
 748 static int tsi108_complete_rx(struct net_device *dev, int budget)
 749 {
 750         struct tsi108_prv_data *data = netdev_priv(dev);
 751         int done = 0;
 752
 753         while (data->rxfree && done != budget) {
 754                 int rx = data->rxtail;
 755                 struct sk_buff *skb;
 756
 757                 if (data->rxring[rx].misc & TSI108_RX_OWN)
 758                         break;
 759
 760                 skb = data->rxskbs[rx];
 761                 data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
 762                 data->rxfree--;
 763                 done++;
 764
 765                 if (data->rxring[rx].misc & TSI108_RX_BAD) {
 766                         spin_lock_irq(&data->misclock);
 767
 768                         if (data->rxring[rx].misc & TSI108_RX_CRC)
 769                                 data->stats.rx_crc_errors++;
 770                         if (data->rxring[rx].misc & TSI108_RX_OVER)
 771                                 data->stats.rx_fifo_errors++;
 772
 773                         spin_unlock_irq(&data->misclock);
 774
 775                         dev_kfree_skb_any(skb);
 776                         continue;
 777                 }
 778                 if (netif_msg_pktdata(data)) {
 779                         int i;
 780                         printk("%s: Rx Frame contents (%d)\n",
 781                                dev->name, data->rxring[rx].len);
 782                         for (i = 0; i < data->rxring[rx].len; i++)
 783                                 printk(" %2.2x", skb->data[i]);
 784                         printk(".\n");
 785                 }
 786
 787                 skb_put(skb, data->rxring[rx].len);
 788                 skb->protocol = eth_type_trans(skb, dev);
 789                 netif_receive_skb(skb);
 790                 dev->last_rx = jiffies;
 791         }
 792
 793         return done;
 794 }
 795
 796 static int tsi108_refill_rx(struct net_device *dev, int budget)
 797 {
 798         struct tsi108_prv_data *data = netdev_priv(dev);
 799         int done = 0;
 800
 801         while (data->rxfree != TSI108_RXRING_LEN && done != budget) {
 802                 int rx = data->rxhead;
 803                 struct sk_buff *skb;
 804
 805                 data->rxskbs[rx] = skb = dev_alloc_skb(TSI108_RXBUF_SIZE + 2);
 806                 if (!skb)
 807                         break;
 808
 809                 skb_reserve(skb, 2); /* Align the data on a 4-byte boundary. */
 810
 811                 data->rxring[rx].buf0 = dma_map_single(NULL, skb->data,
 812                                                         TSI108_RX_SKB_SIZE,
 813                                                         DMA_FROM_DEVICE);
 814
 815                 /* Sometimes the hardware sets blen to zero after packet
 816                  * reception, even though the manual says that it's only ever
 817                  * modified by the driver.
 818                  */
 819
 820                 data->rxring[rx].blen = TSI108_RX_SKB_SIZE;
 821                 data->rxring[rx].misc = TSI108_RX_OWN | TSI108_RX_INT;
 822
 823                 data->rxhead = (data->rxhead + 1) % TSI108_RXRING_LEN;
 824                 data->rxfree++;
 825                 done++;
 826         }
 827
 828         if (done != 0 && !(TSI_READ(TSI108_EC_RXSTAT) &
 829                            TSI108_EC_RXSTAT_QUEUE0))
 830                 tsi108_restart_rx(data, dev);
 831
 832         return done;
 833 }
 834
 835 static int tsi108_poll(struct napi_struct *napi, int budget)
 836 {
 837         struct tsi108_prv_data *data = container_of(napi, struct tsi108_prv_data, napi);
 838         struct net_device *dev = data->dev;
 839         u32 estat = TSI_READ(TSI108_EC_RXESTAT);
 840         u32 intstat = TSI_READ(TSI108_EC_INTSTAT);
 841         int num_received = 0, num_filled = 0;
 842
 843         intstat &= TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
 844             TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR | TSI108_INT_RXWAIT;
 845
 846         TSI_WRITE(TSI108_EC_RXESTAT, estat);
 847         TSI_WRITE(TSI108_EC_INTSTAT, intstat);
 848
 849         if (data->rxpending || (estat & TSI108_EC_RXESTAT_Q0_DESCINT))
 850                 num_received = tsi108_complete_rx(dev, budget);
 851
 852         /* This should normally fill no more slots than the number of
 853          * packets received in tsi108_complete_rx().  The exception
 854          * is when we previously ran out of memory for RX SKBs.  In that
 855          * case, it's helpful to obey the budget, not only so that the
 856          * CPU isn't hogged, but so that memory (which may still be low)
 857          * is not hogged by one device.
 858          *
 859          * A work unit is considered to be two SKBs to allow us to catch
 860          * up when the ring has shrunk due to out-of-memory but we're
 861          * still removing the full budget's worth of packets each time.
 862          */
 863
 864         if (data->rxfree < TSI108_RXRING_LEN)
 865                 num_filled = tsi108_refill_rx(dev, budget * 2);
 866
 867         if (intstat & TSI108_INT_RXERROR) {
 868                 u32 err = TSI_READ(TSI108_EC_RXERR);
 869                 TSI_WRITE(TSI108_EC_RXERR, err);
 870
 871                 if (err) {
 872                         if (net_ratelimit())
 873                                 printk(KERN_DEBUG "%s: RX error %x\n",
 874                                        dev->name, err);
 875
 876                         if (!(TSI_READ(TSI108_EC_RXSTAT) &
 877                               TSI108_EC_RXSTAT_QUEUE0))
 878                                 tsi108_restart_rx(data, dev);
 879                 }
 880         }
 881
 882         if (intstat & TSI108_INT_RXOVERRUN) {
 883                 spin_lock_irq(&data->misclock);
 884                 data->stats.rx_fifo_errors++;
 885                 spin_unlock_irq(&data->misclock);
 886         }
 887
 888         if (num_received < budget) {
 889                 data->rxpending = 0;
 890                 netif_rx_complete(dev, napi);
 891
 892                 TSI_WRITE(TSI108_EC_INTMASK,
 893                                      TSI_READ(TSI108_EC_INTMASK)
 894                                      & ~(TSI108_INT_RXQUEUE0
 895                                          | TSI108_INT_RXTHRESH |
 896                                          TSI108_INT_RXOVERRUN |
 897                                          TSI108_INT_RXERROR |
 898                                          TSI108_INT_RXWAIT));
 899         } else {
 900                 data->rxpending = 1;
 901         }
 902
 903         return num_received;
 904 }
 905
 906 static void tsi108_rx_int(struct net_device *dev)
 907 {
 908         struct tsi108_prv_data *data = netdev_priv(dev);
 909
 910         /* A race could cause dev to already be scheduled, so it's not an
 911          * error if that happens (and interrupts shouldn't be re-masked,
 912          * because that can cause harmful races, if poll has already
 913          * unmasked them but not cleared LINK_STATE_SCHED).
 914          *
 915          * This can happen if this code races with tsi108_poll(), which masks
 916          * the interrupts after tsi108_irq_one() read the mask, but before
 917          * netif_rx_schedule is called.  It could also happen due to calls
 918          * from tsi108_check_rxring().
 919          */
 920
 921         if (netif_rx_schedule_prep(dev, &data->napi)) {
 922                 /* Mask, rather than ack, the receive interrupts.  The ack
 923                  * will happen in tsi108_poll().
 924                  */
 925
 926                 TSI_WRITE(TSI108_EC_INTMASK,
 927                                      TSI_READ(TSI108_EC_INTMASK) |
 928                                      TSI108_INT_RXQUEUE0
 929                                      | TSI108_INT_RXTHRESH |
 930                                      TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR |
 931                                      TSI108_INT_RXWAIT);
 932                 __netif_rx_schedule(dev, &data->napi);
 933         } else {
 934                 if (!netif_running(dev)) {
 935                         /* This can happen if an interrupt occurs while the
 936                          * interface is being brought down, as the START
 937                          * bit is cleared before the stop function is called.
 938                          *
 939                          * In this case, the interrupts must be masked, or
 940                          * they will continue indefinitely.
 941                          *
 942                          * There's a race here if the interface is brought down
 943                          * and then up in rapid succession, as the device could
 944                          * be made running after the above check and before
 945                          * the masking below.  This will only happen if the IRQ
 946                          * thread has a lower priority than the task brining
 947                          * up the interface.  Fixing this race would likely
 948                          * require changes in generic code.
 949                          */
 950
 951                         TSI_WRITE(TSI108_EC_INTMASK,
 952                                              TSI_READ
 953                                              (TSI108_EC_INTMASK) |
 954                                              TSI108_INT_RXQUEUE0 |
 955                                              TSI108_INT_RXTHRESH |
 956                                              TSI108_INT_RXOVERRUN |
 957                                              TSI108_INT_RXERROR |
 958                                              TSI108_INT_RXWAIT);
 959                 }
 960         }
 961 }
 962
 963 /* If the RX ring has run out of memory, try periodically
 964  * to allocate some more, as otherwise poll would never
 965  * get called (apart from the initial end-of-queue condition).
 966  *
 967  * This is called once per second (by default) from the thread.
 968  */
 969
 970 static void tsi108_check_rxring(struct net_device *dev)
 971 {
 972         struct tsi108_prv_data *data = netdev_priv(dev);
 973
 974         /* A poll is scheduled, as opposed to caling tsi108_refill_rx
 975          * directly, so as to keep the receive path single-threaded
 976          * (and thus not needing a lock).
 977          */
 978
 979         if (netif_running(dev) && data->rxfree < TSI108_RXRING_LEN / 4)
 980                 tsi108_rx_int(dev);
 981 }
 982
 983 static void tsi108_tx_int(struct net_device *dev)
 984 {
 985         struct tsi108_prv_data *data = netdev_priv(dev);
 986         u32 estat = TSI_READ(TSI108_EC_TXESTAT);
 987
 988         TSI_WRITE(TSI108_EC_TXESTAT, estat);
 989         TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_TXQUEUE0 |
 990                              TSI108_INT_TXIDLE | TSI108_INT_TXERROR);
 991         if (estat & TSI108_EC_TXESTAT_Q0_ERR) {
 992                 u32 err = TSI_READ(TSI108_EC_TXERR);
 993                 TSI_WRITE(TSI108_EC_TXERR, err);
 994
 995                 if (err && net_ratelimit())
 996                         printk(KERN_ERR "%s: TX error %x\n", dev->name, err);
 997         }
 998
 999         if (estat & (TSI108_EC_TXESTAT_Q0_DESCINT | TSI108_EC_TXESTAT_Q0_EOQ)) {
1000                 spin_lock(&data->txlock);
1001                 tsi108_complete_tx(dev);
1002                 spin_unlock(&data->txlock);
1003         }
1004 }
1005
1006
1007 static irqreturn_t tsi108_irq(int irq, void *dev_id)
1008 {
1009         struct net_device *dev = dev_id;
1010         struct tsi108_prv_data *data = netdev_priv(dev);
1011         u32 stat = TSI_READ(TSI108_EC_INTSTAT);
1012
1013         if (!(stat & TSI108_INT_ANY))
1014                 return IRQ_NONE;        /* Not our interrupt */
1015
1016         stat &= ~TSI_READ(TSI108_EC_INTMASK);
1017
1018         if (stat & (TSI108_INT_TXQUEUE0 | TSI108_INT_TXIDLE |
1019                     TSI108_INT_TXERROR))
1020                 tsi108_tx_int(dev);
1021         if (stat & (TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
1022                     TSI108_INT_RXWAIT | TSI108_INT_RXOVERRUN |
1023                     TSI108_INT_RXERROR))
1024                 tsi108_rx_int(dev);
1025
1026         if (stat & TSI108_INT_SFN) {
1027                 if (net_ratelimit())
1028                         printk(KERN_DEBUG "%s: SFN error\n", dev->name);
1029                 TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_SFN);
1030         }
1031
1032         if (stat & TSI108_INT_STATCARRY) {
1033                 tsi108_stat_carry(dev);
1034                 TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_STATCARRY);
1035         }
1036
1037         return IRQ_HANDLED;
1038 }
1039
1040 static void tsi108_stop_ethernet(struct net_device *dev)
1041 {
1042         struct tsi108_prv_data *data = netdev_priv(dev);
1043         int i = 1000;
1044         /* Disable all TX and RX queues ... */
1045         TSI_WRITE(TSI108_EC_TXCTRL, 0);
1046         TSI_WRITE(TSI108_EC_RXCTRL, 0);
1047
1048         /* ...and wait for them to become idle */
1049         while(i--) {
1050                 if(!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_ACTIVE))
1051                         break;
1052                 udelay(10);
1053         }
1054         i = 1000;
1055         while(i--){
1056                 if(!(TSI_READ(TSI108_EC_RXSTAT) & TSI108_EC_RXSTAT_ACTIVE))
1057                         return;
1058                 udelay(10);
1059         }
1060         printk(KERN_ERR "%s function time out \n", __FUNCTION__);
1061 }
1062
1063 static void tsi108_reset_ether(struct tsi108_prv_data * data)
1064 {
1065         TSI_WRITE(TSI108_MAC_CFG1, TSI108_MAC_CFG1_SOFTRST);
1066         udelay(100);
1067         TSI_WRITE(TSI108_MAC_CFG1, 0);
1068
1069         TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATRST);
1070         udelay(100);
1071         TSI_WRITE(TSI108_EC_PORTCTRL,
1072                              TSI_READ(TSI108_EC_PORTCTRL) &
1073                              ~TSI108_EC_PORTCTRL_STATRST);
1074
1075         TSI_WRITE(TSI108_EC_TXCFG, TSI108_EC_TXCFG_RST);
1076         udelay(100);
1077         TSI_WRITE(TSI108_EC_TXCFG,
1078                              TSI_READ(TSI108_EC_TXCFG) &
1079                              ~TSI108_EC_TXCFG_RST);
1080
1081         TSI_WRITE(TSI108_EC_RXCFG, TSI108_EC_RXCFG_RST);
1082         udelay(100);
1083         TSI_WRITE(TSI108_EC_RXCFG,
1084                              TSI_READ(TSI108_EC_RXCFG) &
1085                              ~TSI108_EC_RXCFG_RST);
1086
1087         TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
1088                              TSI_READ(TSI108_MAC_MII_MGMT_CFG) |
1089                              TSI108_MAC_MII_MGMT_RST);
1090         udelay(100);
1091         TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
1092                              (TSI_READ(TSI108_MAC_MII_MGMT_CFG) &
1093                              ~(TSI108_MAC_MII_MGMT_RST |
1094                                TSI108_MAC_MII_MGMT_CLK)) | 0x07);
1095 }
1096
1097 static int tsi108_get_mac(struct net_device *dev)
1098 {
1099         struct tsi108_prv_data *data = netdev_priv(dev);
1100         u32 word1 = TSI_READ(TSI108_MAC_ADDR1);
1101         u32 word2 = TSI_READ(TSI108_MAC_ADDR2);
1102
1103         /* Note that the octets are reversed from what the manual says,
1104          * producing an even weirder ordering...
1105          */
1106         if (word2 == 0 && word1 == 0) {
1107                 dev->dev_addr[0] = 0x00;
1108                 dev->dev_addr[1] = 0x06;
1109                 dev->dev_addr[2] = 0xd2;
1110                 dev->dev_addr[3] = 0x00;
1111                 dev->dev_addr[4] = 0x00;
1112                 if (0x8 == data->phy)
1113                         dev->dev_addr[5] = 0x01;
1114                 else
1115                         dev->dev_addr[5] = 0x02;
1116
1117                 word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
1118
1119                 word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
1120                     (dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
1121
1122                 TSI_WRITE(TSI108_MAC_ADDR1, word1);
1123                 TSI_WRITE(TSI108_MAC_ADDR2, word2);
1124         } else {
1125                 dev->dev_addr[0] = (word2 >> 16) & 0xff;
1126                 dev->dev_addr[1] = (word2 >> 24) & 0xff;
1127                 dev->dev_addr[2] = (word1 >> 0) & 0xff;
1128                 dev->dev_addr[3] = (word1 >> 8) & 0xff;
1129                 dev->dev_addr[4] = (word1 >> 16) & 0xff;
1130                 dev->dev_addr[5] = (word1 >> 24) & 0xff;
1131         }
1132
1133         if (!is_valid_ether_addr(dev->dev_addr)) {
1134                 printk("KERN_ERR: word1: %08x, word2: %08x\n", word1, word2);
1135                 return -EINVAL;
1136         }
1137
1138         return 0;
1139 }
1140
1141 static int tsi108_set_mac(struct net_device *dev, void *addr)
1142 {
1143         struct tsi108_prv_data *data = netdev_priv(dev);
1144         u32 word1, word2;
1145         int i;
1146
1147         if (!is_valid_ether_addr(addr))
1148                 return -EINVAL;
1149
1150         for (i = 0; i < 6; i++)
1151                 /* +2 is for the offset of the HW addr type */
1152                 dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
1153
1154         word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
1155
1156         word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
1157             (dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
1158
1159         spin_lock_irq(&data->misclock);
1160         TSI_WRITE(TSI108_MAC_ADDR1, word1);
1161         TSI_WRITE(TSI108_MAC_ADDR2, word2);
1162         spin_lock(&data->txlock);
1163
1164         if (data->txfree && data->link_up)
1165                 netif_wake_queue(dev);
1166
1167         spin_unlock(&data->txlock);
1168         spin_unlock_irq(&data->misclock);
1169         return 0;
1170 }
1171
1172 /* Protected by dev->xmit_lock. */
1173 static void tsi108_set_rx_mode(struct net_device *dev)
1174 {
1175         struct tsi108_prv_data *data = netdev_priv(dev);
1176         u32 rxcfg = TSI_READ(TSI108_EC_RXCFG);
1177
1178         if (dev->flags & IFF_PROMISC) {
1179                 rxcfg &= ~(TSI108_EC_RXCFG_UC_HASH | TSI108_EC_RXCFG_MC_HASH);
1180                 rxcfg |= TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE;
1181                 goto out;
1182         }
1183
1184         rxcfg &= ~(TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE);
1185
1186         if (dev->flags & IFF_ALLMULTI || dev->mc_count) {
1187                 int i;
1188                 struct dev_mc_list *mc = dev->mc_list;
1189                 rxcfg |= TSI108_EC_RXCFG_MFE | TSI108_EC_RXCFG_MC_HASH;
1190
1191                 memset(data->mc_hash, 0, sizeof(data->mc_hash));
1192
1193                 while (mc) {
1194                         u32 hash, crc;
1195
1196                         if (mc->dmi_addrlen == 6) {
1197                                 crc = ether_crc(6, mc->dmi_addr);
1198                                 hash = crc >> 23;
1199
1200                                 __set_bit(hash, &data->mc_hash[0]);
1201                         } else {
1202                                 printk(KERN_ERR
1203                                        "%s: got multicast address of length %d "
1204                                        "instead of 6.\n", dev->name,
1205                                        mc->dmi_addrlen);
1206                         }
1207
1208                         mc = mc->next;
1209                 }
1210
1211                 TSI_WRITE(TSI108_EC_HASHADDR,
1212                                      TSI108_EC_HASHADDR_AUTOINC |
1213                                      TSI108_EC_HASHADDR_MCAST);
1214
1215                 for (i = 0; i < 16; i++) {
1216                         /* The manual says that the hardware may drop
1217                          * back-to-back writes to the data register.
1218                          */
1219                         udelay(1);
1220                         TSI_WRITE(TSI108_EC_HASHDATA,
1221                                              data->mc_hash[i]);
1222                 }
1223         }
1224
1225       out:
1226         TSI_WRITE(TSI108_EC_RXCFG, rxcfg);
1227 }
1228
1229 static void tsi108_init_phy(struct net_device *dev)
1230 {
1231         struct tsi108_prv_data *data = netdev_priv(dev);
1232         u32 i = 0;
1233         u16 phyval = 0;
1234         unsigned long flags;
1235
1236         spin_lock_irqsave(&phy_lock, flags);
1237
1238         tsi108_write_mii(data, MII_BMCR, BMCR_RESET);
1239         while (i--){
1240                 if(!(tsi108_read_mii(data, MII_BMCR) & BMCR_RESET))
1241                         break;
1242                 udelay(10);
1243         }
1244         if (i == 0)
1245                 printk(KERN_ERR "%s function time out \n", __FUNCTION__);
1246
1247         if (data->phy_type == TSI108_PHY_BCM54XX) {
1248                 tsi108_write_mii(data, 0x09, 0x0300);
1249                 tsi108_write_mii(data, 0x10, 0x1020);
1250                 tsi108_write_mii(data, 0x1c, 0x8c00);
1251         }
1252
1253         tsi108_write_mii(data,
1254                          MII_BMCR,
1255                          BMCR_ANENABLE | BMCR_ANRESTART);
1256         while (tsi108_read_mii(data, MII_BMCR) & BMCR_ANRESTART)
1257                 cpu_relax();
1258
1259         /* Set G/MII mode and receive clock select in TBI control #2.  The
1260          * second port won't work if this isn't done, even though we don't
1261          * use TBI mode.
1262          */
1263
1264         tsi108_write_tbi(data, 0x11, 0x30);
1265
1266         /* FIXME: It seems to take more than 2 back-to-back reads to the
1267          * PHY_STAT register before the link up status bit is set.
1268          */
1269
1270         data->link_up = 0;
1271
1272         while (!((phyval = tsi108_read_mii(data, MII_BMSR)) &
1273                  BMSR_LSTATUS)) {
1274                 if (i++ > (MII_READ_DELAY / 10)) {
1275                         break;
1276                 }
1277                 spin_unlock_irqrestore(&phy_lock, flags);
1278                 msleep(10);
1279                 spin_lock_irqsave(&phy_lock, flags);
1280         }
1281
1282         data->mii_if.supports_gmii = mii_check_gmii_support(&data->mii_if);
1283         printk(KERN_DEBUG "PHY_STAT reg contains %08x\n", phyval);
1284         data->phy_ok = 1;
1285         data->init_media = 1;
1286         spin_unlock_irqrestore(&phy_lock, flags);
1287 }
1288
1289 static void tsi108_kill_phy(struct net_device *dev)
1290 {
1291         struct tsi108_prv_data *data = netdev_priv(dev);
1292         unsigned long flags;
1293
1294         spin_lock_irqsave(&phy_lock, flags);
1295         tsi108_write_mii(data, MII_BMCR, BMCR_PDOWN);
1296         data->phy_ok = 0;
1297         spin_unlock_irqrestore(&phy_lock, flags);
1298 }
1299
1300 static int tsi108_open(struct net_device *dev)
1301 {
1302         int i;
1303         struct tsi108_prv_data *data = netdev_priv(dev);
1304         unsigned int rxring_size = TSI108_RXRING_LEN * sizeof(rx_desc);
1305         unsigned int txring_size = TSI108_TXRING_LEN * sizeof(tx_desc);
1306
1307         i = request_irq(data->irq_num, tsi108_irq, 0, dev->name, dev);
1308         if (i != 0) {
1309                 printk(KERN_ERR "tsi108_eth%d: Could not allocate IRQ%d.\n",
1310                        data->id, data->irq_num);
1311                 return i;
1312         } else {
1313                 dev->irq = data->irq_num;
1314                 printk(KERN_NOTICE
1315                        "tsi108_open : Port %d Assigned IRQ %d to %s\n",
1316                        data->id, dev->irq, dev->name);
1317         }
1318
1319         data->rxring = dma_alloc_coherent(NULL, rxring_size,
1320                         &data->rxdma, GFP_KERNEL);
1321
1322         if (!data->rxring) {
1323                 printk(KERN_DEBUG
1324                        "TSI108_ETH: failed to allocate memory for rxring!\n");
1325                 return -ENOMEM;
1326         } else {
1327                 memset(data->rxring, 0, rxring_size);
1328         }
1329
1330         data->txring = dma_alloc_coherent(NULL, txring_size,
1331                         &data->txdma, GFP_KERNEL);
1332
1333         if (!data->txring) {
1334                 printk(KERN_DEBUG
1335                        "TSI108_ETH: failed to allocate memory for txring!\n");
1336                 pci_free_consistent(0, rxring_size, data->rxring, data->rxdma);
1337                 return -ENOMEM;
1338         } else {
1339                 memset(data->txring, 0, txring_size);
1340         }
1341
1342         for (i = 0; i < TSI108_RXRING_LEN; i++) {
1343                 data->rxring[i].next0 = data->rxdma + (i + 1) * sizeof(rx_desc);
1344                 data->rxring[i].blen = TSI108_RXBUF_SIZE;
1345                 data->rxring[i].vlan = 0;
1346         }
1347
1348         data->rxring[TSI108_RXRING_LEN - 1].next0 = data->rxdma;
1349
1350         data->rxtail = 0;
1351         data->rxhead = 0;
1352
1353         for (i = 0; i < TSI108_RXRING_LEN; i++) {
1354                 struct sk_buff *skb = dev_alloc_skb(TSI108_RXBUF_SIZE + NET_IP_ALIGN);
1355
1356                 if (!skb) {
1357                         /* Bah.  No memory for now, but maybe we'll get
1358                          * some more later.
1359                          * For now, we'll live with the smaller ring.
1360                          */
1361                         printk(KERN_WARNING
1362                                "%s: Could only allocate %d receive skb(s).\n",
1363                                dev->name, i);
1364                         data->rxhead = i;
1365                         break;
1366                 }
1367
1368                 data->rxskbs[i] = skb;
1369                 /* Align the payload on a 4-byte boundary */
1370                 skb_reserve(skb, 2);
1371                 data->rxskbs[i] = skb;
1372                 data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data);
1373                 data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT;
1374         }
1375
1376         data->rxfree = i;
1377         TSI_WRITE(TSI108_EC_RXQ_PTRLOW, data->rxdma);
1378
1379         for (i = 0; i < TSI108_TXRING_LEN; i++) {
1380                 data->txring[i].next0 = data->txdma + (i + 1) * sizeof(tx_desc);
1381                 data->txring[i].misc = 0;
1382         }
1383
1384         data->txring[TSI108_TXRING_LEN - 1].next0 = data->txdma;
1385         data->txtail = 0;
1386         data->txhead = 0;
1387         data->txfree = TSI108_TXRING_LEN;
1388         TSI_WRITE(TSI108_EC_TXQ_PTRLOW, data->txdma);
1389         tsi108_init_phy(dev);
1390
1391         napi_enable(&data->napi);
1392
1393         setup_timer(&data->timer, tsi108_timed_checker, (unsigned long)dev);
1394         mod_timer(&data->timer, jiffies + 1);
1395
1396         tsi108_restart_rx(data, dev);
1397
1398         TSI_WRITE(TSI108_EC_INTSTAT, ~0);
1399
1400         TSI_WRITE(TSI108_EC_INTMASK,
1401                              ~(TSI108_INT_TXQUEUE0 | TSI108_INT_RXERROR |
1402                                TSI108_INT_RXTHRESH | TSI108_INT_RXQUEUE0 |
1403                                TSI108_INT_RXOVERRUN | TSI108_INT_RXWAIT |
1404                                TSI108_INT_SFN | TSI108_INT_STATCARRY));
1405
1406         TSI_WRITE(TSI108_MAC_CFG1,
1407                              TSI108_MAC_CFG1_RXEN | TSI108_MAC_CFG1_TXEN);
1408         netif_start_queue(dev);
1409         return 0;
1410 }
1411
1412 static int tsi108_close(struct net_device *dev)
1413 {
1414         struct tsi108_prv_data *data = netdev_priv(dev);
1415
1416         netif_stop_queue(dev);
1417         napi_disable(&data->napi);
1418
1419         del_timer_sync(&data->timer);
1420
1421         tsi108_stop_ethernet(dev);
1422         tsi108_kill_phy(dev);
1423         TSI_WRITE(TSI108_EC_INTMASK, ~0);
1424         TSI_WRITE(TSI108_MAC_CFG1, 0);
1425
1426         /* Check for any pending TX packets, and drop them. */
1427
1428         while (!data->txfree || data->txhead != data->txtail) {
1429                 int tx = data->txtail;
1430                 struct sk_buff *skb;
1431                 skb = data->txskbs[tx];
1432                 data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
1433                 data->txfree++;
1434                 dev_kfree_skb(skb);
1435         }
1436
1437         synchronize_irq(data->irq_num);
1438         free_irq(data->irq_num, dev);
1439
1440         /* Discard the RX ring. */
1441
1442         while (data->rxfree) {
1443                 int rx = data->rxtail;
1444                 struct sk_buff *skb;
1445
1446                 skb = data->rxskbs[rx];
1447                 data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
1448                 data->rxfree--;
1449                 dev_kfree_skb(skb);
1450         }
1451
1452         dma_free_coherent(0,
1453                             TSI108_RXRING_LEN * sizeof(rx_desc),
1454                             data->rxring, data->rxdma);
1455         dma_free_coherent(0,
1456                             TSI108_TXRING_LEN * sizeof(tx_desc),
1457                             data->txring, data->txdma);
1458
1459         return 0;
1460 }
1461
1462 static void tsi108_init_mac(struct net_device *dev)
1463 {
1464         struct tsi108_prv_data *data = netdev_priv(dev);
1465
1466         TSI_WRITE(TSI108_MAC_CFG2, TSI108_MAC_CFG2_DFLT_PREAMBLE |
1467                              TSI108_MAC_CFG2_PADCRC);
1468
1469         TSI_WRITE(TSI108_EC_TXTHRESH,
1470                              (192 << TSI108_EC_TXTHRESH_STARTFILL) |
1471                              (192 << TSI108_EC_TXTHRESH_STOPFILL));
1472
1473         TSI_WRITE(TSI108_STAT_CARRYMASK1,
1474                              ~(TSI108_STAT_CARRY1_RXBYTES |
1475                                TSI108_STAT_CARRY1_RXPKTS |
1476                                TSI108_STAT_CARRY1_RXFCS |
1477                                TSI108_STAT_CARRY1_RXMCAST |
1478                                TSI108_STAT_CARRY1_RXALIGN |
1479                                TSI108_STAT_CARRY1_RXLENGTH |
1480                                TSI108_STAT_CARRY1_RXRUNT |
1481                                TSI108_STAT_CARRY1_RXJUMBO |
1482                                TSI108_STAT_CARRY1_RXFRAG |
1483                                TSI108_STAT_CARRY1_RXJABBER |
1484                                TSI108_STAT_CARRY1_RXDROP));
1485
1486         TSI_WRITE(TSI108_STAT_CARRYMASK2,
1487                              ~(TSI108_STAT_CARRY2_TXBYTES |
1488                                TSI108_STAT_CARRY2_TXPKTS |
1489                                TSI108_STAT_CARRY2_TXEXDEF |
1490                                TSI108_STAT_CARRY2_TXEXCOL |
1491                                TSI108_STAT_CARRY2_TXTCOL |
1492                                TSI108_STAT_CARRY2_TXPAUSE));
1493
1494         TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATEN);
1495         TSI_WRITE(TSI108_MAC_CFG1, 0);
1496
1497         TSI_WRITE(TSI108_EC_RXCFG,
1498                              TSI108_EC_RXCFG_SE | TSI108_EC_RXCFG_BFE);
1499
1500         TSI_WRITE(TSI108_EC_TXQ_CFG, TSI108_EC_TXQ_CFG_DESC_INT |
1501                              TSI108_EC_TXQ_CFG_EOQ_OWN_INT |
1502                              TSI108_EC_TXQ_CFG_WSWP | (TSI108_PBM_PORT <<
1503                                                 TSI108_EC_TXQ_CFG_SFNPORT));
1504
1505         TSI_WRITE(TSI108_EC_RXQ_CFG, TSI108_EC_RXQ_CFG_DESC_INT |
1506                              TSI108_EC_RXQ_CFG_EOQ_OWN_INT |
1507                              TSI108_EC_RXQ_CFG_WSWP | (TSI108_PBM_PORT <<
1508                                                 TSI108_EC_RXQ_CFG_SFNPORT));
1509
1510         TSI_WRITE(TSI108_EC_TXQ_BUFCFG,
1511                              TSI108_EC_TXQ_BUFCFG_BURST256 |
1512                              TSI108_EC_TXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
1513                                                 TSI108_EC_TXQ_BUFCFG_SFNPORT));
1514
1515         TSI_WRITE(TSI108_EC_RXQ_BUFCFG,
1516                              TSI108_EC_RXQ_BUFCFG_BURST256 |
1517                              TSI108_EC_RXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
1518                                                 TSI108_EC_RXQ_BUFCFG_SFNPORT));
1519
1520         TSI_WRITE(TSI108_EC_INTMASK, ~0);
1521 }
1522
1523 static int tsi108_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1524 {
1525         struct tsi108_prv_data *data = netdev_priv(dev);
1526         unsigned long flags;
1527         int rc;
1528
1529         spin_lock_irqsave(&data->txlock, flags);
1530         rc = mii_ethtool_gset(&data->mii_if, cmd);
1531         spin_unlock_irqrestore(&data->txlock, flags);
1532
1533         return rc;
1534 }
1535
1536 static int tsi108_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1537 {
1538         struct tsi108_prv_data *data = netdev_priv(dev);
1539         unsigned long flags;
1540         int rc;
1541
1542         spin_lock_irqsave(&data->txlock, flags);
1543         rc = mii_ethtool_sset(&data->mii_if, cmd);
1544         spin_unlock_irqrestore(&data->txlock, flags);
1545
1546         return rc;
1547 }
1548
1549 static int tsi108_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1550 {
1551         struct tsi108_prv_data *data = netdev_priv(dev);
1552         if (!netif_running(dev))
1553                 return -EINVAL;
1554         return generic_mii_ioctl(&data->mii_if, if_mii(rq), cmd, NULL);
1555 }
1556
1557 static const struct ethtool_ops tsi108_ethtool_ops = {
1558         .get_link       = ethtool_op_get_link,
1559         .get_settings   = tsi108_get_settings,
1560         .set_settings   = tsi108_set_settings,
1561 };
1562
1563 static int
1564 tsi108_init_one(struct platform_device *pdev)
1565 {
1566         struct net_device *dev = NULL;
1567         struct tsi108_prv_data *data = NULL;
1568         hw_info *einfo;
1569         int err = 0;
1570         DECLARE_MAC_BUF(mac);
1571
1572         einfo = pdev->dev.platform_data;
1573
1574         if (NULL == einfo) {
1575                 printk(KERN_ERR "tsi-eth %d: Missing additional data!\n",
1576                        pdev->id);
1577                 return -ENODEV;
1578         }
1579
1580         /* Create an ethernet device instance */
1581
1582         dev = alloc_etherdev(sizeof(struct tsi108_prv_data));
1583         if (!dev) {
1584                 printk("tsi108_eth: Could not allocate a device structure\n");
1585                 return -ENOMEM;
1586         }
1587
1588         printk("tsi108_eth%d: probe...\n", pdev->id);
1589         data = netdev_priv(dev);
1590         data->dev = dev;
1591
1592         pr_debug("tsi108_eth%d:regs:phyresgs:phy:irq_num=0x%x:0x%x:0x%x:0x%x\n",
1593                         pdev->id, einfo->regs, einfo->phyregs,
1594                         einfo->phy, einfo->irq_num);
1595
1596         data->regs = ioremap(einfo->regs, 0x400);
1597         if (NULL == data->regs) {
1598                 err = -ENOMEM;
1599                 goto regs_fail;
1600         }
1601
1602         data->phyregs = ioremap(einfo->phyregs, 0x400);
1603         if (NULL == data->phyregs) {
1604                 err = -ENOMEM;
1605                 goto regs_fail;
1606         }
1607 /* MII setup */
1608         data->mii_if.dev = dev;
1609         data->mii_if.mdio_read = tsi108_mdio_read;
1610         data->mii_if.mdio_write = tsi108_mdio_write;
1611         data->mii_if.phy_id = einfo->phy;
1612         data->mii_if.phy_id_mask = 0x1f;
1613         data->mii_if.reg_num_mask = 0x1f;
1614
1615         data->phy = einfo->phy;
1616         data->phy_type = einfo->phy_type;
1617         data->irq_num = einfo->irq_num;
1618         data->id = pdev->id;
1619         dev->open = tsi108_open;
1620         dev->stop = tsi108_close;
1621         dev->hard_start_xmit = tsi108_send_packet;
1622         dev->set_mac_address = tsi108_set_mac;
1623         dev->set_multicast_list = tsi108_set_rx_mode;
1624         dev->get_stats = tsi108_get_stats;
1625         netif_napi_add(dev, &data->napi, tsi108_poll, 64);
1626         dev->do_ioctl = tsi108_do_ioctl;
1627         dev->ethtool_ops = &tsi108_ethtool_ops;
1628
1629         /* Apparently, the Linux networking code won't use scatter-gather
1630          * if the hardware doesn't do checksums.  However, it's faster
1631          * to checksum in place and use SG, as (among other reasons)
1632          * the cache won't be dirtied (which then has to be flushed
1633          * before DMA).  The checksumming is done by the driver (via
1634          * a new function skb_csum_dev() in net/core/skbuff.c).
1635          */
1636
1637         dev->features = NETIF_F_HIGHDMA;
1638
1639         spin_lock_init(&data->txlock);
1640         spin_lock_init(&data->misclock);
1641
1642         tsi108_reset_ether(data);
1643         tsi108_kill_phy(dev);
1644
1645         if ((err = tsi108_get_mac(dev)) != 0) {
1646                 printk(KERN_ERR "%s: Invalid MAC address.  Please correct.\n",
1647                        dev->name);
1648                 goto register_fail;
1649         }
1650
1651         tsi108_init_mac(dev);
1652         err = register_netdev(dev);
1653         if (err) {
1654                 printk(KERN_ERR "%s: Cannot register net device, aborting.\n",
1655                                 dev->name);
1656                 goto register_fail;
1657         }
1658
1659         platform_set_drvdata(pdev, dev);
1660         printk(KERN_INFO "%s: Tsi108 Gigabit Ethernet, MAC: %s\n",
1661                dev->name, print_mac(mac, dev->dev_addr));
1662 #ifdef DEBUG
1663         data->msg_enable = DEBUG;
1664         dump_eth_one(dev);
1665 #endif
1666
1667         return 0;
1668
1669 register_fail:
1670         iounmap(data->regs);
1671         iounmap(data->phyregs);
1672
1673 regs_fail:
1674         free_netdev(dev);
1675         return err;
1676 }
1677
1678 /* There's no way to either get interrupts from the PHY when
1679  * something changes, or to have the Tsi108 automatically communicate
1680  * with the PHY to reconfigure itself.
1681  *
1682  * Thus, we have to do it using a timer.
1683  */
1684
1685 static void tsi108_timed_checker(unsigned long dev_ptr)
1686 {
1687         struct net_device *dev = (struct net_device *)dev_ptr;
1688         struct tsi108_prv_data *data = netdev_priv(dev);
1689
1690         tsi108_check_phy(dev);
1691         tsi108_check_rxring(dev);
1692         mod_timer(&data->timer, jiffies + CHECK_PHY_INTERVAL);
1693 }
1694
1695 static int tsi108_ether_init(void)
1696 {
1697         int ret;
1698         ret = platform_driver_register (&tsi_eth_driver);
1699         if (ret < 0){
1700                 printk("tsi108_ether_init: error initializing ethernet "
1701                        "device\n");
1702                 return ret;
1703         }
1704         return 0;
1705 }
1706
1707 static int tsi108_ether_remove(struct platform_device *pdev)
1708 {
1709         struct net_device *dev = platform_get_drvdata(pdev);
1710         struct tsi108_prv_data *priv = netdev_priv(dev);
1711
1712         unregister_netdev(dev);
1713         tsi108_stop_ethernet(dev);
1714         platform_set_drvdata(pdev, NULL);
1715         iounmap(priv->regs);
1716         iounmap(priv->phyregs);
1717         free_netdev(dev);
1718
1719         return 0;
1720 }
1721 static void tsi108_ether_exit(void)
1722 {
1723         platform_driver_unregister(&tsi_eth_driver);
1724 }
1725
1726 module_init(tsi108_ether_init);
1727 module_exit(tsi108_ether_exit);
1728
1729 MODULE_AUTHOR("Tundra Semiconductor Corporation");
1730 MODULE_DESCRIPTION("Tsi108 Gigabit Ethernet driver");
1731 MODULE_LICENSE("GPL");