git.oblomov.eu Git - linux-2.6/blob - 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                 .owner = THIS_MODULE,
 166         },
 167 };
 168
 169 static void tsi108_timed_checker(unsigned long dev_ptr);
 170
 171 static void dump_eth_one(struct net_device *dev)
 172 {
 173         struct tsi108_prv_data *data = netdev_priv(dev);
 174
 175         printk("Dumping %s...\n", dev->name);
 176         printk("intstat %x intmask %x phy_ok %d"
 177                " link %d speed %d duplex %d\n",
 178                TSI_READ(TSI108_EC_INTSTAT),
 179                TSI_READ(TSI108_EC_INTMASK), data->phy_ok,
 180                data->link_up, data->speed, data->duplex);
 181
 182         printk("TX: head %d, tail %d, free %d, stat %x, estat %x, err %x\n",
 183                data->txhead, data->txtail, data->txfree,
 184                TSI_READ(TSI108_EC_TXSTAT),
 185                TSI_READ(TSI108_EC_TXESTAT),
 186                TSI_READ(TSI108_EC_TXERR));
 187
 188         printk("RX: head %d, tail %d, free %d, stat %x,"
 189                " estat %x, err %x, pending %d\n\n",
 190                data->rxhead, data->rxtail, data->rxfree,
 191                TSI_READ(TSI108_EC_RXSTAT),
 192                TSI_READ(TSI108_EC_RXESTAT),
 193                TSI_READ(TSI108_EC_RXERR), data->rxpending);
 194 }
 195
 196 /* Synchronization is needed between the thread and up/down events.
 197  * Note that the PHY is accessed through the same registers for both
 198  * interfaces, so this can't be made interface-specific.
 199  */
 200
 201 static DEFINE_SPINLOCK(phy_lock);
 202
 203 static int tsi108_read_mii(struct tsi108_prv_data *data, int reg)
 204 {
 205         unsigned i;
 206
 207         TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
 208                                 (data->phy << TSI108_MAC_MII_ADDR_PHY) |
 209                                 (reg << TSI108_MAC_MII_ADDR_REG));
 210         TSI_WRITE_PHY(TSI108_MAC_MII_CMD, 0);
 211         TSI_WRITE_PHY(TSI108_MAC_MII_CMD, TSI108_MAC_MII_CMD_READ);
 212         for (i = 0; i < 100; i++) {
 213                 if (!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
 214                       (TSI108_MAC_MII_IND_NOTVALID | TSI108_MAC_MII_IND_BUSY)))
 215                         break;
 216                 udelay(10);
 217         }
 218
 219         if (i == 100)
 220                 return 0xffff;
 221         else
 222                 return (TSI_READ_PHY(TSI108_MAC_MII_DATAIN));
 223 }
 224
 225 static void tsi108_write_mii(struct tsi108_prv_data *data,
 226                                 int reg, u16 val)
 227 {
 228         unsigned i = 100;
 229         TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
 230                                 (data->phy << TSI108_MAC_MII_ADDR_PHY) |
 231                                 (reg << TSI108_MAC_MII_ADDR_REG));
 232         TSI_WRITE_PHY(TSI108_MAC_MII_DATAOUT, val);
 233         while (i--) {
 234                 if(!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
 235                         TSI108_MAC_MII_IND_BUSY))
 236                         break;
 237                 udelay(10);
 238         }
 239 }
 240
 241 static int tsi108_mdio_read(struct net_device *dev, int addr, int reg)
 242 {
 243         struct tsi108_prv_data *data = netdev_priv(dev);
 244         return tsi108_read_mii(data, reg);
 245 }
 246
 247 static void tsi108_mdio_write(struct net_device *dev, int addr, int reg, int val)
 248 {
 249         struct tsi108_prv_data *data = netdev_priv(dev);
 250         tsi108_write_mii(data, reg, val);
 251 }
 252
 253 static inline void tsi108_write_tbi(struct tsi108_prv_data *data,
 254                                         int reg, u16 val)
 255 {
 256         unsigned i = 1000;
 257         TSI_WRITE(TSI108_MAC_MII_ADDR,
 258                              (0x1e << TSI108_MAC_MII_ADDR_PHY)
 259                              | (reg << TSI108_MAC_MII_ADDR_REG));
 260         TSI_WRITE(TSI108_MAC_MII_DATAOUT, val);
 261         while(i--) {
 262                 if(!(TSI_READ(TSI108_MAC_MII_IND) & TSI108_MAC_MII_IND_BUSY))
 263                         return;
 264                 udelay(10);
 265         }
 266         printk(KERN_ERR "%s function time out \n", __FUNCTION__);
 267 }
 268
 269 static int mii_speed(struct mii_if_info *mii)
 270 {
 271         int advert, lpa, val, media;
 272         int lpa2 = 0;
 273         int speed;
 274
 275         if (!mii_link_ok(mii))
 276                 return 0;
 277
 278         val = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_BMSR);
 279         if ((val & BMSR_ANEGCOMPLETE) == 0)
 280                 return 0;
 281
 282         advert = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_ADVERTISE);
 283         lpa = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_LPA);
 284         media = mii_nway_result(advert & lpa);
 285
 286         if (mii->supports_gmii)
 287                 lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
 288
 289         speed = lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 :
 290                         (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? 100 : 10);
 291         return speed;
 292 }
 293
 294 static void tsi108_check_phy(struct net_device *dev)
 295 {
 296         struct tsi108_prv_data *data = netdev_priv(dev);
 297         u32 mac_cfg2_reg, portctrl_reg;
 298         u32 duplex;
 299         u32 speed;
 300         unsigned long flags;
 301
 302         spin_lock_irqsave(&phy_lock, flags);
 303
 304         if (!data->phy_ok)
 305                 goto out;
 306
 307         duplex = mii_check_media(&data->mii_if, netif_msg_link(data), data->init_media);
 308         data->init_media = 0;
 309
 310         if (netif_carrier_ok(dev)) {
 311
 312                 speed = mii_speed(&data->mii_if);
 313
 314                 if ((speed != data->speed) || duplex) {
 315
 316                         mac_cfg2_reg = TSI_READ(TSI108_MAC_CFG2);
 317                         portctrl_reg = TSI_READ(TSI108_EC_PORTCTRL);
 318
 319                         mac_cfg2_reg &= ~TSI108_MAC_CFG2_IFACE_MASK;
 320
 321                         if (speed == 1000) {
 322                                 mac_cfg2_reg |= TSI108_MAC_CFG2_GIG;
 323                                 portctrl_reg &= ~TSI108_EC_PORTCTRL_NOGIG;
 324                         } else {
 325                                 mac_cfg2_reg |= TSI108_MAC_CFG2_NOGIG;
 326                                 portctrl_reg |= TSI108_EC_PORTCTRL_NOGIG;
 327                         }
 328
 329                         data->speed = speed;
 330
 331                         if (data->mii_if.full_duplex) {
 332                                 mac_cfg2_reg |= TSI108_MAC_CFG2_FULLDUPLEX;
 333                                 portctrl_reg &= ~TSI108_EC_PORTCTRL_HALFDUPLEX;
 334                                 data->duplex = 2;
 335                         } else {
 336                                 mac_cfg2_reg &= ~TSI108_MAC_CFG2_FULLDUPLEX;
 337                                 portctrl_reg |= TSI108_EC_PORTCTRL_HALFDUPLEX;
 338                                 data->duplex = 1;
 339                         }
 340
 341                         TSI_WRITE(TSI108_MAC_CFG2, mac_cfg2_reg);
 342                         TSI_WRITE(TSI108_EC_PORTCTRL, portctrl_reg);
 343                 }
 344
 345                 if (data->link_up == 0) {
 346                         /* The manual says it can take 3-4 usecs for the speed change
 347                          * to take effect.
 348                          */
 349                         udelay(5);
 350
 351                         spin_lock(&data->txlock);
 352                         if (is_valid_ether_addr(dev->dev_addr) && data->txfree)
 353                                 netif_wake_queue(dev);
 354
 355                         data->link_up = 1;
 356                         spin_unlock(&data->txlock);
 357                 }
 358         } else {
 359                 if (data->link_up == 1) {
 360                         netif_stop_queue(dev);
 361                         data->link_up = 0;
 362                         printk(KERN_NOTICE "%s : link is down\n", dev->name);
 363                 }
 364
 365                 goto out;
 366         }
 367
 368
 369 out:
 370         spin_unlock_irqrestore(&phy_lock, flags);
 371 }
 372
 373 static inline void
 374 tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift,
 375                       unsigned long *upper)
 376 {
 377         if (carry & carry_bit)
 378                 *upper += carry_shift;
 379 }
 380
 381 static void tsi108_stat_carry(struct net_device *dev)
 382 {
 383         struct tsi108_prv_data *data = netdev_priv(dev);
 384         u32 carry1, carry2;
 385
 386         spin_lock_irq(&data->misclock);
 387
 388         carry1 = TSI_READ(TSI108_STAT_CARRY1);
 389         carry2 = TSI_READ(TSI108_STAT_CARRY2);
 390
 391         TSI_WRITE(TSI108_STAT_CARRY1, carry1);
 392         TSI_WRITE(TSI108_STAT_CARRY2, carry2);
 393
 394         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXBYTES,
 395                               TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
 396
 397         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXPKTS,
 398                               TSI108_STAT_RXPKTS_CARRY,
 399                               &data->stats.rx_packets);
 400
 401         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFCS,
 402                               TSI108_STAT_RXFCS_CARRY, &data->rx_fcs);
 403
 404         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXMCAST,
 405                               TSI108_STAT_RXMCAST_CARRY,
 406                               &data->stats.multicast);
 407
 408         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXALIGN,
 409                               TSI108_STAT_RXALIGN_CARRY,
 410                               &data->stats.rx_frame_errors);
 411
 412         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXLENGTH,
 413                               TSI108_STAT_RXLENGTH_CARRY,
 414                               &data->stats.rx_length_errors);
 415
 416         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXRUNT,
 417                               TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
 418
 419         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJUMBO,
 420                               TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
 421
 422         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFRAG,
 423                               TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
 424
 425         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJABBER,
 426                               TSI108_STAT_RXJABBER_CARRY, &data->rx_long_fcs);
 427
 428         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXDROP,
 429                               TSI108_STAT_RXDROP_CARRY,
 430                               &data->stats.rx_missed_errors);
 431
 432         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXBYTES,
 433                               TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
 434
 435         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPKTS,
 436                               TSI108_STAT_TXPKTS_CARRY,
 437                               &data->stats.tx_packets);
 438
 439         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXDEF,
 440                               TSI108_STAT_TXEXDEF_CARRY,
 441                               &data->stats.tx_aborted_errors);
 442
 443         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXCOL,
 444                               TSI108_STAT_TXEXCOL_CARRY, &data->tx_coll_abort);
 445
 446         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXTCOL,
 447                               TSI108_STAT_TXTCOL_CARRY,
 448                               &data->stats.collisions);
 449
 450         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPAUSE,
 451                               TSI108_STAT_TXPAUSEDROP_CARRY,
 452                               &data->tx_pause_drop);
 453
 454         spin_unlock_irq(&data->misclock);
 455 }
 456
 457 /* Read a stat counter atomically with respect to carries.
 458  * data->misclock must be held.
 459  */
 460 static inline unsigned long
 461 tsi108_read_stat(struct tsi108_prv_data * data, int reg, int carry_bit,
 462                  int carry_shift, unsigned long *upper)
 463 {
 464         int carryreg;
 465         unsigned long val;
 466
 467         if (reg < 0xb0)
 468                 carryreg = TSI108_STAT_CARRY1;
 469         else
 470                 carryreg = TSI108_STAT_CARRY2;
 471
 472       again:
 473         val = TSI_READ(reg) | *upper;
 474
 475         /* Check to see if it overflowed, but the interrupt hasn't
 476          * been serviced yet.  If so, handle the carry here, and
 477          * try again.
 478          */
 479
 480         if (unlikely(TSI_READ(carryreg) & carry_bit)) {
 481                 *upper += carry_shift;
 482                 TSI_WRITE(carryreg, carry_bit);
 483                 goto again;
 484         }
 485
 486         return val;
 487 }
 488
 489 static struct net_device_stats *tsi108_get_stats(struct net_device *dev)
 490 {
 491         unsigned long excol;
 492
 493         struct tsi108_prv_data *data = netdev_priv(dev);
 494         spin_lock_irq(&data->misclock);
 495
 496         data->tmpstats.rx_packets =
 497             tsi108_read_stat(data, TSI108_STAT_RXPKTS,
 498                              TSI108_STAT_CARRY1_RXPKTS,
 499                              TSI108_STAT_RXPKTS_CARRY, &data->stats.rx_packets);
 500
 501         data->tmpstats.tx_packets =
 502             tsi108_read_stat(data, TSI108_STAT_TXPKTS,
 503                              TSI108_STAT_CARRY2_TXPKTS,
 504                              TSI108_STAT_TXPKTS_CARRY, &data->stats.tx_packets);
 505
 506         data->tmpstats.rx_bytes =
 507             tsi108_read_stat(data, TSI108_STAT_RXBYTES,
 508                              TSI108_STAT_CARRY1_RXBYTES,
 509                              TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
 510
 511         data->tmpstats.tx_bytes =
 512             tsi108_read_stat(data, TSI108_STAT_TXBYTES,
 513                              TSI108_STAT_CARRY2_TXBYTES,
 514                              TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
 515
 516         data->tmpstats.multicast =
 517             tsi108_read_stat(data, TSI108_STAT_RXMCAST,
 518                              TSI108_STAT_CARRY1_RXMCAST,
 519                              TSI108_STAT_RXMCAST_CARRY, &data->stats.multicast);
 520
 521         excol = tsi108_read_stat(data, TSI108_STAT_TXEXCOL,
 522                                  TSI108_STAT_CARRY2_TXEXCOL,
 523                                  TSI108_STAT_TXEXCOL_CARRY,
 524                                  &data->tx_coll_abort);
 525
 526         data->tmpstats.collisions =
 527             tsi108_read_stat(data, TSI108_STAT_TXTCOL,
 528                              TSI108_STAT_CARRY2_TXTCOL,
 529                              TSI108_STAT_TXTCOL_CARRY, &data->stats.collisions);
 530
 531         data->tmpstats.collisions += excol;
 532
 533         data->tmpstats.rx_length_errors =
 534             tsi108_read_stat(data, TSI108_STAT_RXLENGTH,
 535                              TSI108_STAT_CARRY1_RXLENGTH,
 536                              TSI108_STAT_RXLENGTH_CARRY,
 537                              &data->stats.rx_length_errors);
 538
 539         data->tmpstats.rx_length_errors +=
 540             tsi108_read_stat(data, TSI108_STAT_RXRUNT,
 541                              TSI108_STAT_CARRY1_RXRUNT,
 542                              TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
 543
 544         data->tmpstats.rx_length_errors +=
 545             tsi108_read_stat(data, TSI108_STAT_RXJUMBO,
 546                              TSI108_STAT_CARRY1_RXJUMBO,
 547                              TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
 548
 549         data->tmpstats.rx_frame_errors =
 550             tsi108_read_stat(data, TSI108_STAT_RXALIGN,
 551                              TSI108_STAT_CARRY1_RXALIGN,
 552                              TSI108_STAT_RXALIGN_CARRY,
 553                              &data->stats.rx_frame_errors);
 554
 555         data->tmpstats.rx_frame_errors +=
 556             tsi108_read_stat(data, TSI108_STAT_RXFCS,
 557                              TSI108_STAT_CARRY1_RXFCS, TSI108_STAT_RXFCS_CARRY,
 558                              &data->rx_fcs);
 559
 560         data->tmpstats.rx_frame_errors +=
 561             tsi108_read_stat(data, TSI108_STAT_RXFRAG,
 562                              TSI108_STAT_CARRY1_RXFRAG,
 563                              TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
 564
 565         data->tmpstats.rx_missed_errors =
 566             tsi108_read_stat(data, TSI108_STAT_RXDROP,
 567                              TSI108_STAT_CARRY1_RXDROP,
 568                              TSI108_STAT_RXDROP_CARRY,
 569                              &data->stats.rx_missed_errors);
 570
 571         /* These three are maintained by software. */
 572         data->tmpstats.rx_fifo_errors = data->stats.rx_fifo_errors;
 573         data->tmpstats.rx_crc_errors = data->stats.rx_crc_errors;
 574
 575         data->tmpstats.tx_aborted_errors =
 576             tsi108_read_stat(data, TSI108_STAT_TXEXDEF,
 577                              TSI108_STAT_CARRY2_TXEXDEF,
 578                              TSI108_STAT_TXEXDEF_CARRY,
 579                              &data->stats.tx_aborted_errors);
 580
 581         data->tmpstats.tx_aborted_errors +=
 582             tsi108_read_stat(data, TSI108_STAT_TXPAUSEDROP,
 583                              TSI108_STAT_CARRY2_TXPAUSE,
 584                              TSI108_STAT_TXPAUSEDROP_CARRY,
 585                              &data->tx_pause_drop);
 586
 587         data->tmpstats.tx_aborted_errors += excol;
 588
 589         data->tmpstats.tx_errors = data->tmpstats.tx_aborted_errors;
 590         data->tmpstats.rx_errors = data->tmpstats.rx_length_errors +
 591             data->tmpstats.rx_crc_errors +
 592             data->tmpstats.rx_frame_errors +
 593             data->tmpstats.rx_fifo_errors + data->tmpstats.rx_missed_errors;
 594
 595         spin_unlock_irq(&data->misclock);
 596         return &data->tmpstats;
 597 }
 598
 599 static void tsi108_restart_rx(struct tsi108_prv_data * data, struct net_device *dev)
 600 {
 601         TSI_WRITE(TSI108_EC_RXQ_PTRHIGH,
 602                              TSI108_EC_RXQ_PTRHIGH_VALID);
 603
 604         TSI_WRITE(TSI108_EC_RXCTRL, TSI108_EC_RXCTRL_GO
 605                              | TSI108_EC_RXCTRL_QUEUE0);
 606 }
 607
 608 static void tsi108_restart_tx(struct tsi108_prv_data * data)
 609 {
 610         TSI_WRITE(TSI108_EC_TXQ_PTRHIGH,
 611                              TSI108_EC_TXQ_PTRHIGH_VALID);
 612
 613         TSI_WRITE(TSI108_EC_TXCTRL, TSI108_EC_TXCTRL_IDLEINT |
 614                              TSI108_EC_TXCTRL_GO | TSI108_EC_TXCTRL_QUEUE0);
 615 }
 616
 617 /* txlock must be held by caller, with IRQs disabled, and
 618  * with permission to re-enable them when the lock is dropped.
 619  */
 620 static void tsi108_complete_tx(struct net_device *dev)
 621 {
 622         struct tsi108_prv_data *data = netdev_priv(dev);
 623         int tx;
 624         struct sk_buff *skb;
 625         int release = 0;
 626
 627         while (!data->txfree || data->txhead != data->txtail) {
 628                 tx = data->txtail;
 629
 630                 if (data->txring[tx].misc & TSI108_TX_OWN)
 631                         break;
 632
 633                 skb = data->txskbs[tx];
 634
 635                 if (!(data->txring[tx].misc & TSI108_TX_OK))
 636                         printk("%s: bad tx packet, misc %x\n",
 637                                dev->name, data->txring[tx].misc);
 638
 639                 data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
 640                 data->txfree++;
 641
 642                 if (data->txring[tx].misc & TSI108_TX_EOF) {
 643                         dev_kfree_skb_any(skb);
 644                         release++;
 645                 }
 646         }
 647
 648         if (release) {
 649                 if (is_valid_ether_addr(dev->dev_addr) && data->link_up)
 650                         netif_wake_queue(dev);
 651         }
 652 }
 653
 654 static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev)
 655 {
 656         struct tsi108_prv_data *data = netdev_priv(dev);
 657         int frags = skb_shinfo(skb)->nr_frags + 1;
 658         int i;
 659
 660         if (!data->phy_ok && net_ratelimit())
 661                 printk(KERN_ERR "%s: Transmit while PHY is down!\n", dev->name);
 662
 663         if (!data->link_up) {
 664                 printk(KERN_ERR "%s: Transmit while link is down!\n",
 665                        dev->name);
 666                 netif_stop_queue(dev);
 667                 return NETDEV_TX_BUSY;
 668         }
 669
 670         if (data->txfree < MAX_SKB_FRAGS + 1) {
 671                 netif_stop_queue(dev);
 672
 673                 if (net_ratelimit())
 674                         printk(KERN_ERR "%s: Transmit with full tx ring!\n",
 675                                dev->name);
 676                 return NETDEV_TX_BUSY;
 677         }
 678
 679         if (data->txfree - frags < MAX_SKB_FRAGS + 1) {
 680                 netif_stop_queue(dev);
 681         }
 682
 683         spin_lock_irq(&data->txlock);
 684
 685         for (i = 0; i < frags; i++) {
 686                 int misc = 0;
 687                 int tx = data->txhead;
 688
 689                 /* This is done to mark every TSI108_TX_INT_FREQ tx buffers with
 690                  * the interrupt bit.  TX descriptor-complete interrupts are
 691                  * enabled when the queue fills up, and masked when there is
 692                  * still free space.  This way, when saturating the outbound
 693                  * link, the tx interrupts are kept to a reasonable level.
 694                  * When the queue is not full, reclamation of skbs still occurs
 695                  * as new packets are transmitted, or on a queue-empty
 696                  * interrupt.
 697                  */
 698
 699                 if ((tx % TSI108_TX_INT_FREQ == 0) &&
 700                     ((TSI108_TXRING_LEN - data->txfree) >= TSI108_TX_INT_FREQ))
 701                         misc = TSI108_TX_INT;
 702
 703                 data->txskbs[tx] = skb;
 704
 705                 if (i == 0) {
 706                         data->txring[tx].buf0 = dma_map_single(NULL, skb->data,
 707                                         skb->len - skb->data_len, DMA_TO_DEVICE);
 708                         data->txring[tx].len = skb->len - skb->data_len;
 709                         misc |= TSI108_TX_SOF;
 710                 } else {
 711                         skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
 712
 713                         data->txring[tx].buf0 =
 714                             dma_map_page(NULL, frag->page, frag->page_offset,
 715                                             frag->size, DMA_TO_DEVICE);
 716                         data->txring[tx].len = frag->size;
 717                 }
 718
 719                 if (i == frags - 1)
 720                         misc |= TSI108_TX_EOF;
 721
 722                 if (netif_msg_pktdata(data)) {
 723                         int i;
 724                         printk("%s: Tx Frame contents (%d)\n", dev->name,
 725                                skb->len);
 726                         for (i = 0; i < skb->len; i++)
 727                                 printk(" %2.2x", skb->data[i]);
 728                         printk(".\n");
 729                 }
 730                 data->txring[tx].misc = misc | TSI108_TX_OWN;
 731
 732                 data->txhead = (data->txhead + 1) % TSI108_TXRING_LEN;
 733                 data->txfree--;
 734         }
 735
 736         tsi108_complete_tx(dev);
 737
 738         /* This must be done after the check for completed tx descriptors,
 739          * so that the tail pointer is correct.
 740          */
 741
 742         if (!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_QUEUE0))
 743                 tsi108_restart_tx(data);
 744
 745         spin_unlock_irq(&data->txlock);
 746         return NETDEV_TX_OK;
 747 }
 748
 749 static int tsi108_complete_rx(struct net_device *dev, int budget)
 750 {
 751         struct tsi108_prv_data *data = netdev_priv(dev);
 752         int done = 0;
 753
 754         while (data->rxfree && done != budget) {
 755                 int rx = data->rxtail;
 756                 struct sk_buff *skb;
 757
 758                 if (data->rxring[rx].misc & TSI108_RX_OWN)
 759                         break;
 760
 761                 skb = data->rxskbs[rx];
 762                 data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
 763                 data->rxfree--;
 764                 done++;
 765
 766                 if (data->rxring[rx].misc & TSI108_RX_BAD) {
 767                         spin_lock_irq(&data->misclock);
 768
 769                         if (data->rxring[rx].misc & TSI108_RX_CRC)
 770                                 data->stats.rx_crc_errors++;
 771                         if (data->rxring[rx].misc & TSI108_RX_OVER)
 772                                 data->stats.rx_fifo_errors++;
 773
 774                         spin_unlock_irq(&data->misclock);
 775
 776                         dev_kfree_skb_any(skb);
 777                         continue;
 778                 }
 779                 if (netif_msg_pktdata(data)) {
 780                         int i;
 781                         printk("%s: Rx Frame contents (%d)\n",
 782                                dev->name, data->rxring[rx].len);
 783                         for (i = 0; i < data->rxring[rx].len; i++)
 784                                 printk(" %2.2x", skb->data[i]);
 785                         printk(".\n");
 786                 }
 787
 788                 skb_put(skb, data->rxring[rx].len);
 789                 skb->protocol = eth_type_trans(skb, dev);
 790                 netif_receive_skb(skb);
 791                 dev->last_rx = jiffies;
 792         }
 793
 794         return done;
 795 }
 796
 797 static int tsi108_refill_rx(struct net_device *dev, int budget)
 798 {
 799         struct tsi108_prv_data *data = netdev_priv(dev);
 800         int done = 0;
 801
 802         while (data->rxfree != TSI108_RXRING_LEN && done != budget) {
 803                 int rx = data->rxhead;
 804                 struct sk_buff *skb;
 805
 806                 data->rxskbs[rx] = skb = netdev_alloc_skb(dev,
 807                                                           TSI108_RXBUF_SIZE + 2);
 808                 if (!skb)
 809                         break;
 810
 811                 skb_reserve(skb, 2); /* Align the data on a 4-byte boundary. */
 812
 813                 data->rxring[rx].buf0 = dma_map_single(NULL, skb->data,
 814                                                         TSI108_RX_SKB_SIZE,
 815                                                         DMA_FROM_DEVICE);
 816
 817                 /* Sometimes the hardware sets blen to zero after packet
 818                  * reception, even though the manual says that it's only ever
 819                  * modified by the driver.
 820                  */
 821
 822                 data->rxring[rx].blen = TSI108_RX_SKB_SIZE;
 823                 data->rxring[rx].misc = TSI108_RX_OWN | TSI108_RX_INT;
 824
 825                 data->rxhead = (data->rxhead + 1) % TSI108_RXRING_LEN;
 826                 data->rxfree++;
 827                 done++;
 828         }
 829
 830         if (done != 0 && !(TSI_READ(TSI108_EC_RXSTAT) &
 831                            TSI108_EC_RXSTAT_QUEUE0))
 832                 tsi108_restart_rx(data, dev);
 833
 834         return done;
 835 }
 836
 837 static int tsi108_poll(struct napi_struct *napi, int budget)
 838 {
 839         struct tsi108_prv_data *data = container_of(napi, struct tsi108_prv_data, napi);
 840         struct net_device *dev = data->dev;
 841         u32 estat = TSI_READ(TSI108_EC_RXESTAT);
 842         u32 intstat = TSI_READ(TSI108_EC_INTSTAT);
 843         int num_received = 0, num_filled = 0;
 844
 845         intstat &= TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
 846             TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR | TSI108_INT_RXWAIT;
 847
 848         TSI_WRITE(TSI108_EC_RXESTAT, estat);
 849         TSI_WRITE(TSI108_EC_INTSTAT, intstat);
 850
 851         if (data->rxpending || (estat & TSI108_EC_RXESTAT_Q0_DESCINT))
 852                 num_received = tsi108_complete_rx(dev, budget);
 853
 854         /* This should normally fill no more slots than the number of
 855          * packets received in tsi108_complete_rx().  The exception
 856          * is when we previously ran out of memory for RX SKBs.  In that
 857          * case, it's helpful to obey the budget, not only so that the
 858          * CPU isn't hogged, but so that memory (which may still be low)
 859          * is not hogged by one device.
 860          *
 861          * A work unit is considered to be two SKBs to allow us to catch
 862          * up when the ring has shrunk due to out-of-memory but we're
 863          * still removing the full budget's worth of packets each time.
 864          */
 865
 866         if (data->rxfree < TSI108_RXRING_LEN)
 867                 num_filled = tsi108_refill_rx(dev, budget * 2);
 868
 869         if (intstat & TSI108_INT_RXERROR) {
 870                 u32 err = TSI_READ(TSI108_EC_RXERR);
 871                 TSI_WRITE(TSI108_EC_RXERR, err);
 872
 873                 if (err) {
 874                         if (net_ratelimit())
 875                                 printk(KERN_DEBUG "%s: RX error %x\n",
 876                                        dev->name, err);
 877
 878                         if (!(TSI_READ(TSI108_EC_RXSTAT) &
 879                               TSI108_EC_RXSTAT_QUEUE0))
 880                                 tsi108_restart_rx(data, dev);
 881                 }
 882         }
 883
 884         if (intstat & TSI108_INT_RXOVERRUN) {
 885                 spin_lock_irq(&data->misclock);
 886                 data->stats.rx_fifo_errors++;
 887                 spin_unlock_irq(&data->misclock);
 888         }
 889
 890         if (num_received < budget) {
 891                 data->rxpending = 0;
 892                 netif_rx_complete(dev, napi);
 893
 894                 TSI_WRITE(TSI108_EC_INTMASK,
 895                                      TSI_READ(TSI108_EC_INTMASK)
 896                                      & ~(TSI108_INT_RXQUEUE0
 897                                          | TSI108_INT_RXTHRESH |
 898                                          TSI108_INT_RXOVERRUN |
 899                                          TSI108_INT_RXERROR |
 900                                          TSI108_INT_RXWAIT));
 901         } else {
 902                 data->rxpending = 1;
 903         }
 904
 905         return num_received;
 906 }
 907
 908 static void tsi108_rx_int(struct net_device *dev)
 909 {
 910         struct tsi108_prv_data *data = netdev_priv(dev);
 911
 912         /* A race could cause dev to already be scheduled, so it's not an
 913          * error if that happens (and interrupts shouldn't be re-masked,
 914          * because that can cause harmful races, if poll has already
 915          * unmasked them but not cleared LINK_STATE_SCHED).
 916          *
 917          * This can happen if this code races with tsi108_poll(), which masks
 918          * the interrupts after tsi108_irq_one() read the mask, but before
 919          * netif_rx_schedule is called.  It could also happen due to calls
 920          * from tsi108_check_rxring().
 921          */
 922
 923         if (netif_rx_schedule_prep(dev, &data->napi)) {
 924                 /* Mask, rather than ack, the receive interrupts.  The ack
 925                  * will happen in tsi108_poll().
 926                  */
 927
 928                 TSI_WRITE(TSI108_EC_INTMASK,
 929                                      TSI_READ(TSI108_EC_INTMASK) |
 930                                      TSI108_INT_RXQUEUE0
 931                                      | TSI108_INT_RXTHRESH |
 932                                      TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR |
 933                                      TSI108_INT_RXWAIT);
 934                 __netif_rx_schedule(dev, &data->napi);
 935         } else {
 936                 if (!netif_running(dev)) {
 937                         /* This can happen if an interrupt occurs while the
 938                          * interface is being brought down, as the START
 939                          * bit is cleared before the stop function is called.
 940                          *
 941                          * In this case, the interrupts must be masked, or
 942                          * they will continue indefinitely.
 943                          *
 944                          * There's a race here if the interface is brought down
 945                          * and then up in rapid succession, as the device could
 946                          * be made running after the above check and before
 947                          * the masking below.  This will only happen if the IRQ
 948                          * thread has a lower priority than the task brining
 949                          * up the interface.  Fixing this race would likely
 950                          * require changes in generic code.
 951                          */
 952
 953                         TSI_WRITE(TSI108_EC_INTMASK,
 954                                              TSI_READ
 955                                              (TSI108_EC_INTMASK) |
 956                                              TSI108_INT_RXQUEUE0 |
 957                                              TSI108_INT_RXTHRESH |
 958                                              TSI108_INT_RXOVERRUN |
 959                                              TSI108_INT_RXERROR |
 960                                              TSI108_INT_RXWAIT);
 961                 }
 962         }
 963 }
 964
 965 /* If the RX ring has run out of memory, try periodically
 966  * to allocate some more, as otherwise poll would never
 967  * get called (apart from the initial end-of-queue condition).
 968  *
 969  * This is called once per second (by default) from the thread.
 970  */
 971
 972 static void tsi108_check_rxring(struct net_device *dev)
 973 {
 974         struct tsi108_prv_data *data = netdev_priv(dev);
 975
 976         /* A poll is scheduled, as opposed to caling tsi108_refill_rx
 977          * directly, so as to keep the receive path single-threaded
 978          * (and thus not needing a lock).
 979          */
 980
 981         if (netif_running(dev) && data->rxfree < TSI108_RXRING_LEN / 4)
 982                 tsi108_rx_int(dev);
 983 }
 984
 985 static void tsi108_tx_int(struct net_device *dev)
 986 {
 987         struct tsi108_prv_data *data = netdev_priv(dev);
 988         u32 estat = TSI_READ(TSI108_EC_TXESTAT);
 989
 990         TSI_WRITE(TSI108_EC_TXESTAT, estat);
 991         TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_TXQUEUE0 |
 992                              TSI108_INT_TXIDLE | TSI108_INT_TXERROR);
 993         if (estat & TSI108_EC_TXESTAT_Q0_ERR) {
 994                 u32 err = TSI_READ(TSI108_EC_TXERR);
 995                 TSI_WRITE(TSI108_EC_TXERR, err);
 996
 997                 if (err && net_ratelimit())
 998                         printk(KERN_ERR "%s: TX error %x\n", dev->name, err);
 999         }
1000
1001         if (estat & (TSI108_EC_TXESTAT_Q0_DESCINT | TSI108_EC_TXESTAT_Q0_EOQ)) {
1002                 spin_lock(&data->txlock);
1003                 tsi108_complete_tx(dev);
1004                 spin_unlock(&data->txlock);
1005         }
1006 }
1007
1008
1009 static irqreturn_t tsi108_irq(int irq, void *dev_id)
1010 {
1011         struct net_device *dev = dev_id;
1012         struct tsi108_prv_data *data = netdev_priv(dev);
1013         u32 stat = TSI_READ(TSI108_EC_INTSTAT);
1014
1015         if (!(stat & TSI108_INT_ANY))
1016                 return IRQ_NONE;        /* Not our interrupt */
1017
1018         stat &= ~TSI_READ(TSI108_EC_INTMASK);
1019
1020         if (stat & (TSI108_INT_TXQUEUE0 | TSI108_INT_TXIDLE |
1021                     TSI108_INT_TXERROR))
1022                 tsi108_tx_int(dev);
1023         if (stat & (TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
1024                     TSI108_INT_RXWAIT | TSI108_INT_RXOVERRUN |
1025                     TSI108_INT_RXERROR))
1026                 tsi108_rx_int(dev);
1027
1028         if (stat & TSI108_INT_SFN) {
1029                 if (net_ratelimit())
1030                         printk(KERN_DEBUG "%s: SFN error\n", dev->name);
1031                 TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_SFN);
1032         }
1033
1034         if (stat & TSI108_INT_STATCARRY) {
1035                 tsi108_stat_carry(dev);
1036                 TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_STATCARRY);
1037         }
1038
1039         return IRQ_HANDLED;
1040 }
1041
1042 static void tsi108_stop_ethernet(struct net_device *dev)
1043 {
1044         struct tsi108_prv_data *data = netdev_priv(dev);
1045         int i = 1000;
1046         /* Disable all TX and RX queues ... */
1047         TSI_WRITE(TSI108_EC_TXCTRL, 0);
1048         TSI_WRITE(TSI108_EC_RXCTRL, 0);
1049
1050         /* ...and wait for them to become idle */
1051         while(i--) {
1052                 if(!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_ACTIVE))
1053                         break;
1054                 udelay(10);
1055         }
1056         i = 1000;
1057         while(i--){
1058                 if(!(TSI_READ(TSI108_EC_RXSTAT) & TSI108_EC_RXSTAT_ACTIVE))
1059                         return;
1060                 udelay(10);
1061         }
1062         printk(KERN_ERR "%s function time out \n", __FUNCTION__);
1063 }
1064
1065 static void tsi108_reset_ether(struct tsi108_prv_data * data)
1066 {
1067         TSI_WRITE(TSI108_MAC_CFG1, TSI108_MAC_CFG1_SOFTRST);
1068         udelay(100);
1069         TSI_WRITE(TSI108_MAC_CFG1, 0);
1070
1071         TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATRST);
1072         udelay(100);
1073         TSI_WRITE(TSI108_EC_PORTCTRL,
1074                              TSI_READ(TSI108_EC_PORTCTRL) &
1075                              ~TSI108_EC_PORTCTRL_STATRST);
1076
1077         TSI_WRITE(TSI108_EC_TXCFG, TSI108_EC_TXCFG_RST);
1078         udelay(100);
1079         TSI_WRITE(TSI108_EC_TXCFG,
1080                              TSI_READ(TSI108_EC_TXCFG) &
1081                              ~TSI108_EC_TXCFG_RST);
1082
1083         TSI_WRITE(TSI108_EC_RXCFG, TSI108_EC_RXCFG_RST);
1084         udelay(100);
1085         TSI_WRITE(TSI108_EC_RXCFG,
1086                              TSI_READ(TSI108_EC_RXCFG) &
1087                              ~TSI108_EC_RXCFG_RST);
1088
1089         TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
1090                              TSI_READ(TSI108_MAC_MII_MGMT_CFG) |
1091                              TSI108_MAC_MII_MGMT_RST);
1092         udelay(100);
1093         TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
1094                              (TSI_READ(TSI108_MAC_MII_MGMT_CFG) &
1095                              ~(TSI108_MAC_MII_MGMT_RST |
1096                                TSI108_MAC_MII_MGMT_CLK)) | 0x07);
1097 }
1098
1099 static int tsi108_get_mac(struct net_device *dev)
1100 {
1101         struct tsi108_prv_data *data = netdev_priv(dev);
1102         u32 word1 = TSI_READ(TSI108_MAC_ADDR1);
1103         u32 word2 = TSI_READ(TSI108_MAC_ADDR2);
1104
1105         /* Note that the octets are reversed from what the manual says,
1106          * producing an even weirder ordering...
1107          */
1108         if (word2 == 0 && word1 == 0) {
1109                 dev->dev_addr[0] = 0x00;
1110                 dev->dev_addr[1] = 0x06;
1111                 dev->dev_addr[2] = 0xd2;
1112                 dev->dev_addr[3] = 0x00;
1113                 dev->dev_addr[4] = 0x00;
1114                 if (0x8 == data->phy)
1115                         dev->dev_addr[5] = 0x01;
1116                 else
1117                         dev->dev_addr[5] = 0x02;
1118
1119                 word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
1120
1121                 word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
1122                     (dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
1123
1124                 TSI_WRITE(TSI108_MAC_ADDR1, word1);
1125                 TSI_WRITE(TSI108_MAC_ADDR2, word2);
1126         } else {
1127                 dev->dev_addr[0] = (word2 >> 16) & 0xff;
1128                 dev->dev_addr[1] = (word2 >> 24) & 0xff;
1129                 dev->dev_addr[2] = (word1 >> 0) & 0xff;
1130                 dev->dev_addr[3] = (word1 >> 8) & 0xff;
1131                 dev->dev_addr[4] = (word1 >> 16) & 0xff;
1132                 dev->dev_addr[5] = (word1 >> 24) & 0xff;
1133         }
1134
1135         if (!is_valid_ether_addr(dev->dev_addr)) {
1136                 printk("KERN_ERR: word1: %08x, word2: %08x\n", word1, word2);
1137                 return -EINVAL;
1138         }
1139
1140         return 0;
1141 }
1142
1143 static int tsi108_set_mac(struct net_device *dev, void *addr)
1144 {
1145         struct tsi108_prv_data *data = netdev_priv(dev);
1146         u32 word1, word2;
1147         int i;
1148
1149         if (!is_valid_ether_addr(addr))
1150                 return -EINVAL;
1151
1152         for (i = 0; i < 6; i++)
1153                 /* +2 is for the offset of the HW addr type */
1154                 dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
1155
1156         word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
1157
1158         word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
1159             (dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
1160
1161         spin_lock_irq(&data->misclock);
1162         TSI_WRITE(TSI108_MAC_ADDR1, word1);
1163         TSI_WRITE(TSI108_MAC_ADDR2, word2);
1164         spin_lock(&data->txlock);
1165
1166         if (data->txfree && data->link_up)
1167                 netif_wake_queue(dev);
1168
1169         spin_unlock(&data->txlock);
1170         spin_unlock_irq(&data->misclock);
1171         return 0;
1172 }
1173
1174 /* Protected by dev->xmit_lock. */
1175 static void tsi108_set_rx_mode(struct net_device *dev)
1176 {
1177         struct tsi108_prv_data *data = netdev_priv(dev);
1178         u32 rxcfg = TSI_READ(TSI108_EC_RXCFG);
1179
1180         if (dev->flags & IFF_PROMISC) {
1181                 rxcfg &= ~(TSI108_EC_RXCFG_UC_HASH | TSI108_EC_RXCFG_MC_HASH);
1182                 rxcfg |= TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE;
1183                 goto out;
1184         }
1185
1186         rxcfg &= ~(TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE);
1187
1188         if (dev->flags & IFF_ALLMULTI || dev->mc_count) {
1189                 int i;
1190                 struct dev_mc_list *mc = dev->mc_list;
1191                 rxcfg |= TSI108_EC_RXCFG_MFE | TSI108_EC_RXCFG_MC_HASH;
1192
1193                 memset(data->mc_hash, 0, sizeof(data->mc_hash));
1194
1195                 while (mc) {
1196                         u32 hash, crc;
1197
1198                         if (mc->dmi_addrlen == 6) {
1199                                 crc = ether_crc(6, mc->dmi_addr);
1200                                 hash = crc >> 23;
1201
1202                                 __set_bit(hash, &data->mc_hash[0]);
1203                         } else {
1204                                 printk(KERN_ERR
1205                                        "%s: got multicast address of length %d "
1206                                        "instead of 6.\n", dev->name,
1207                                        mc->dmi_addrlen);
1208                         }
1209
1210                         mc = mc->next;
1211                 }
1212
1213                 TSI_WRITE(TSI108_EC_HASHADDR,
1214                                      TSI108_EC_HASHADDR_AUTOINC |
1215                                      TSI108_EC_HASHADDR_MCAST);
1216
1217                 for (i = 0; i < 16; i++) {
1218                         /* The manual says that the hardware may drop
1219                          * back-to-back writes to the data register.
1220                          */
1221                         udelay(1);
1222                         TSI_WRITE(TSI108_EC_HASHDATA,
1223                                              data->mc_hash[i]);
1224                 }
1225         }
1226
1227       out:
1228         TSI_WRITE(TSI108_EC_RXCFG, rxcfg);
1229 }
1230
1231 static void tsi108_init_phy(struct net_device *dev)
1232 {
1233         struct tsi108_prv_data *data = netdev_priv(dev);
1234         u32 i = 0;
1235         u16 phyval = 0;
1236         unsigned long flags;
1237
1238         spin_lock_irqsave(&phy_lock, flags);
1239
1240         tsi108_write_mii(data, MII_BMCR, BMCR_RESET);
1241         while (i--){
1242                 if(!(tsi108_read_mii(data, MII_BMCR) & BMCR_RESET))
1243                         break;
1244                 udelay(10);
1245         }
1246         if (i == 0)
1247                 printk(KERN_ERR "%s function time out \n", __FUNCTION__);
1248
1249         if (data->phy_type == TSI108_PHY_BCM54XX) {
1250                 tsi108_write_mii(data, 0x09, 0x0300);
1251                 tsi108_write_mii(data, 0x10, 0x1020);
1252                 tsi108_write_mii(data, 0x1c, 0x8c00);
1253         }
1254
1255         tsi108_write_mii(data,
1256                          MII_BMCR,
1257                          BMCR_ANENABLE | BMCR_ANRESTART);
1258         while (tsi108_read_mii(data, MII_BMCR) & BMCR_ANRESTART)
1259                 cpu_relax();
1260
1261         /* Set G/MII mode and receive clock select in TBI control #2.  The
1262          * second port won't work if this isn't done, even though we don't
1263          * use TBI mode.
1264          */
1265
1266         tsi108_write_tbi(data, 0x11, 0x30);
1267
1268         /* FIXME: It seems to take more than 2 back-to-back reads to the
1269          * PHY_STAT register before the link up status bit is set.
1270          */
1271
1272         data->link_up = 0;
1273
1274         while (!((phyval = tsi108_read_mii(data, MII_BMSR)) &
1275                  BMSR_LSTATUS)) {
1276                 if (i++ > (MII_READ_DELAY / 10)) {
1277                         break;
1278                 }
1279                 spin_unlock_irqrestore(&phy_lock, flags);
1280                 msleep(10);
1281                 spin_lock_irqsave(&phy_lock, flags);
1282         }
1283
1284         data->mii_if.supports_gmii = mii_check_gmii_support(&data->mii_if);
1285         printk(KERN_DEBUG "PHY_STAT reg contains %08x\n", phyval);
1286         data->phy_ok = 1;
1287         data->init_media = 1;
1288         spin_unlock_irqrestore(&phy_lock, flags);
1289 }
1290
1291 static void tsi108_kill_phy(struct net_device *dev)
1292 {
1293         struct tsi108_prv_data *data = netdev_priv(dev);
1294         unsigned long flags;
1295
1296         spin_lock_irqsave(&phy_lock, flags);
1297         tsi108_write_mii(data, MII_BMCR, BMCR_PDOWN);
1298         data->phy_ok = 0;
1299         spin_unlock_irqrestore(&phy_lock, flags);
1300 }
1301
1302 static int tsi108_open(struct net_device *dev)
1303 {
1304         int i;
1305         struct tsi108_prv_data *data = netdev_priv(dev);
1306         unsigned int rxring_size = TSI108_RXRING_LEN * sizeof(rx_desc);
1307         unsigned int txring_size = TSI108_TXRING_LEN * sizeof(tx_desc);
1308
1309         i = request_irq(data->irq_num, tsi108_irq, 0, dev->name, dev);
1310         if (i != 0) {
1311                 printk(KERN_ERR "tsi108_eth%d: Could not allocate IRQ%d.\n",
1312                        data->id, data->irq_num);
1313                 return i;
1314         } else {
1315                 dev->irq = data->irq_num;
1316                 printk(KERN_NOTICE
1317                        "tsi108_open : Port %d Assigned IRQ %d to %s\n",
1318                        data->id, dev->irq, dev->name);
1319         }
1320
1321         data->rxring = dma_alloc_coherent(NULL, rxring_size,
1322                         &data->rxdma, GFP_KERNEL);
1323
1324         if (!data->rxring) {
1325                 printk(KERN_DEBUG
1326                        "TSI108_ETH: failed to allocate memory for rxring!\n");
1327                 return -ENOMEM;
1328         } else {
1329                 memset(data->rxring, 0, rxring_size);
1330         }
1331
1332         data->txring = dma_alloc_coherent(NULL, txring_size,
1333                         &data->txdma, GFP_KERNEL);
1334
1335         if (!data->txring) {
1336                 printk(KERN_DEBUG
1337                        "TSI108_ETH: failed to allocate memory for txring!\n");
1338                 pci_free_consistent(0, rxring_size, data->rxring, data->rxdma);
1339                 return -ENOMEM;
1340         } else {
1341                 memset(data->txring, 0, txring_size);
1342         }
1343
1344         for (i = 0; i < TSI108_RXRING_LEN; i++) {
1345                 data->rxring[i].next0 = data->rxdma + (i + 1) * sizeof(rx_desc);
1346                 data->rxring[i].blen = TSI108_RXBUF_SIZE;
1347                 data->rxring[i].vlan = 0;
1348         }
1349
1350         data->rxring[TSI108_RXRING_LEN - 1].next0 = data->rxdma;
1351
1352         data->rxtail = 0;
1353         data->rxhead = 0;
1354
1355         for (i = 0; i < TSI108_RXRING_LEN; i++) {
1356                 struct sk_buff *skb;
1357
1358                 skb = netdev_alloc_skb(dev, TSI108_RXBUF_SIZE + NET_IP_ALIGN);
1359                 if (!skb) {
1360                         /* Bah.  No memory for now, but maybe we'll get
1361                          * some more later.
1362                          * For now, we'll live with the smaller ring.
1363                          */
1364                         printk(KERN_WARNING
1365                                "%s: Could only allocate %d receive skb(s).\n",
1366                                dev->name, i);
1367                         data->rxhead = i;
1368                         break;
1369                 }
1370
1371                 data->rxskbs[i] = skb;
1372                 /* Align the payload on a 4-byte boundary */
1373                 skb_reserve(skb, 2);
1374                 data->rxskbs[i] = skb;
1375                 data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data);
1376                 data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT;
1377         }
1378
1379         data->rxfree = i;
1380         TSI_WRITE(TSI108_EC_RXQ_PTRLOW, data->rxdma);
1381
1382         for (i = 0; i < TSI108_TXRING_LEN; i++) {
1383                 data->txring[i].next0 = data->txdma + (i + 1) * sizeof(tx_desc);
1384                 data->txring[i].misc = 0;
1385         }
1386
1387         data->txring[TSI108_TXRING_LEN - 1].next0 = data->txdma;
1388         data->txtail = 0;
1389         data->txhead = 0;
1390         data->txfree = TSI108_TXRING_LEN;
1391         TSI_WRITE(TSI108_EC_TXQ_PTRLOW, data->txdma);
1392         tsi108_init_phy(dev);
1393
1394         napi_enable(&data->napi);
1395
1396         setup_timer(&data->timer, tsi108_timed_checker, (unsigned long)dev);
1397         mod_timer(&data->timer, jiffies + 1);
1398
1399         tsi108_restart_rx(data, dev);
1400
1401         TSI_WRITE(TSI108_EC_INTSTAT, ~0);
1402
1403         TSI_WRITE(TSI108_EC_INTMASK,
1404                              ~(TSI108_INT_TXQUEUE0 | TSI108_INT_RXERROR |
1405                                TSI108_INT_RXTHRESH | TSI108_INT_RXQUEUE0 |
1406                                TSI108_INT_RXOVERRUN | TSI108_INT_RXWAIT |
1407                                TSI108_INT_SFN | TSI108_INT_STATCARRY));
1408
1409         TSI_WRITE(TSI108_MAC_CFG1,
1410                              TSI108_MAC_CFG1_RXEN | TSI108_MAC_CFG1_TXEN);
1411         netif_start_queue(dev);
1412         return 0;
1413 }
1414
1415 static int tsi108_close(struct net_device *dev)
1416 {
1417         struct tsi108_prv_data *data = netdev_priv(dev);
1418
1419         netif_stop_queue(dev);
1420         napi_disable(&data->napi);
1421
1422         del_timer_sync(&data->timer);
1423
1424         tsi108_stop_ethernet(dev);
1425         tsi108_kill_phy(dev);
1426         TSI_WRITE(TSI108_EC_INTMASK, ~0);
1427         TSI_WRITE(TSI108_MAC_CFG1, 0);
1428
1429         /* Check for any pending TX packets, and drop them. */
1430
1431         while (!data->txfree || data->txhead != data->txtail) {
1432                 int tx = data->txtail;
1433                 struct sk_buff *skb;
1434                 skb = data->txskbs[tx];
1435                 data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
1436                 data->txfree++;
1437                 dev_kfree_skb(skb);
1438         }
1439
1440         synchronize_irq(data->irq_num);
1441         free_irq(data->irq_num, dev);
1442
1443         /* Discard the RX ring. */
1444
1445         while (data->rxfree) {
1446                 int rx = data->rxtail;
1447                 struct sk_buff *skb;
1448
1449                 skb = data->rxskbs[rx];
1450                 data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
1451                 data->rxfree--;
1452                 dev_kfree_skb(skb);
1453         }
1454
1455         dma_free_coherent(0,
1456                             TSI108_RXRING_LEN * sizeof(rx_desc),
1457                             data->rxring, data->rxdma);
1458         dma_free_coherent(0,
1459                             TSI108_TXRING_LEN * sizeof(tx_desc),
1460                             data->txring, data->txdma);
1461
1462         return 0;
1463 }
1464
1465 static void tsi108_init_mac(struct net_device *dev)
1466 {
1467         struct tsi108_prv_data *data = netdev_priv(dev);
1468
1469         TSI_WRITE(TSI108_MAC_CFG2, TSI108_MAC_CFG2_DFLT_PREAMBLE |
1470                              TSI108_MAC_CFG2_PADCRC);
1471
1472         TSI_WRITE(TSI108_EC_TXTHRESH,
1473                              (192 << TSI108_EC_TXTHRESH_STARTFILL) |
1474                              (192 << TSI108_EC_TXTHRESH_STOPFILL));
1475
1476         TSI_WRITE(TSI108_STAT_CARRYMASK1,
1477                              ~(TSI108_STAT_CARRY1_RXBYTES |
1478                                TSI108_STAT_CARRY1_RXPKTS |
1479                                TSI108_STAT_CARRY1_RXFCS |
1480                                TSI108_STAT_CARRY1_RXMCAST |
1481                                TSI108_STAT_CARRY1_RXALIGN |
1482                                TSI108_STAT_CARRY1_RXLENGTH |
1483                                TSI108_STAT_CARRY1_RXRUNT |
1484                                TSI108_STAT_CARRY1_RXJUMBO |
1485                                TSI108_STAT_CARRY1_RXFRAG |
1486                                TSI108_STAT_CARRY1_RXJABBER |
1487                                TSI108_STAT_CARRY1_RXDROP));
1488
1489         TSI_WRITE(TSI108_STAT_CARRYMASK2,
1490                              ~(TSI108_STAT_CARRY2_TXBYTES |
1491                                TSI108_STAT_CARRY2_TXPKTS |
1492                                TSI108_STAT_CARRY2_TXEXDEF |
1493                                TSI108_STAT_CARRY2_TXEXCOL |
1494                                TSI108_STAT_CARRY2_TXTCOL |
1495                                TSI108_STAT_CARRY2_TXPAUSE));
1496
1497         TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATEN);
1498         TSI_WRITE(TSI108_MAC_CFG1, 0);
1499
1500         TSI_WRITE(TSI108_EC_RXCFG,
1501                              TSI108_EC_RXCFG_SE | TSI108_EC_RXCFG_BFE);
1502
1503         TSI_WRITE(TSI108_EC_TXQ_CFG, TSI108_EC_TXQ_CFG_DESC_INT |
1504                              TSI108_EC_TXQ_CFG_EOQ_OWN_INT |
1505                              TSI108_EC_TXQ_CFG_WSWP | (TSI108_PBM_PORT <<
1506                                                 TSI108_EC_TXQ_CFG_SFNPORT));
1507
1508         TSI_WRITE(TSI108_EC_RXQ_CFG, TSI108_EC_RXQ_CFG_DESC_INT |
1509                              TSI108_EC_RXQ_CFG_EOQ_OWN_INT |
1510                              TSI108_EC_RXQ_CFG_WSWP | (TSI108_PBM_PORT <<
1511                                                 TSI108_EC_RXQ_CFG_SFNPORT));
1512
1513         TSI_WRITE(TSI108_EC_TXQ_BUFCFG,
1514                              TSI108_EC_TXQ_BUFCFG_BURST256 |
1515                              TSI108_EC_TXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
1516                                                 TSI108_EC_TXQ_BUFCFG_SFNPORT));
1517
1518         TSI_WRITE(TSI108_EC_RXQ_BUFCFG,
1519                              TSI108_EC_RXQ_BUFCFG_BURST256 |
1520                              TSI108_EC_RXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
1521                                                 TSI108_EC_RXQ_BUFCFG_SFNPORT));
1522
1523         TSI_WRITE(TSI108_EC_INTMASK, ~0);
1524 }
1525
1526 static int tsi108_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1527 {
1528         struct tsi108_prv_data *data = netdev_priv(dev);
1529         unsigned long flags;
1530         int rc;
1531
1532         spin_lock_irqsave(&data->txlock, flags);
1533         rc = mii_ethtool_gset(&data->mii_if, cmd);
1534         spin_unlock_irqrestore(&data->txlock, flags);
1535
1536         return rc;
1537 }
1538
1539 static int tsi108_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1540 {
1541         struct tsi108_prv_data *data = netdev_priv(dev);
1542         unsigned long flags;
1543         int rc;
1544
1545         spin_lock_irqsave(&data->txlock, flags);
1546         rc = mii_ethtool_sset(&data->mii_if, cmd);
1547         spin_unlock_irqrestore(&data->txlock, flags);
1548
1549         return rc;
1550 }
1551
1552 static int tsi108_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1553 {
1554         struct tsi108_prv_data *data = netdev_priv(dev);
1555         if (!netif_running(dev))
1556                 return -EINVAL;
1557         return generic_mii_ioctl(&data->mii_if, if_mii(rq), cmd, NULL);
1558 }
1559
1560 static const struct ethtool_ops tsi108_ethtool_ops = {
1561         .get_link       = ethtool_op_get_link,
1562         .get_settings   = tsi108_get_settings,
1563         .set_settings   = tsi108_set_settings,
1564 };
1565
1566 static int
1567 tsi108_init_one(struct platform_device *pdev)
1568 {
1569         struct net_device *dev = NULL;
1570         struct tsi108_prv_data *data = NULL;
1571         hw_info *einfo;
1572         int err = 0;
1573         DECLARE_MAC_BUF(mac);
1574
1575         einfo = pdev->dev.platform_data;
1576
1577         if (NULL == einfo) {
1578                 printk(KERN_ERR "tsi-eth %d: Missing additional data!\n",
1579                        pdev->id);
1580                 return -ENODEV;
1581         }
1582
1583         /* Create an ethernet device instance */
1584
1585         dev = alloc_etherdev(sizeof(struct tsi108_prv_data));
1586         if (!dev) {
1587                 printk("tsi108_eth: Could not allocate a device structure\n");
1588                 return -ENOMEM;
1589         }
1590
1591         printk("tsi108_eth%d: probe...\n", pdev->id);
1592         data = netdev_priv(dev);
1593         data->dev = dev;
1594
1595         pr_debug("tsi108_eth%d:regs:phyresgs:phy:irq_num=0x%x:0x%x:0x%x:0x%x\n",
1596                         pdev->id, einfo->regs, einfo->phyregs,
1597                         einfo->phy, einfo->irq_num);
1598
1599         data->regs = ioremap(einfo->regs, 0x400);
1600         if (NULL == data->regs) {
1601                 err = -ENOMEM;
1602                 goto regs_fail;
1603         }
1604
1605         data->phyregs = ioremap(einfo->phyregs, 0x400);
1606         if (NULL == data->phyregs) {
1607                 err = -ENOMEM;
1608                 goto regs_fail;
1609         }
1610 /* MII setup */
1611         data->mii_if.dev = dev;
1612         data->mii_if.mdio_read = tsi108_mdio_read;
1613         data->mii_if.mdio_write = tsi108_mdio_write;
1614         data->mii_if.phy_id = einfo->phy;
1615         data->mii_if.phy_id_mask = 0x1f;
1616         data->mii_if.reg_num_mask = 0x1f;
1617
1618         data->phy = einfo->phy;
1619         data->phy_type = einfo->phy_type;
1620         data->irq_num = einfo->irq_num;
1621         data->id = pdev->id;
1622         dev->open = tsi108_open;
1623         dev->stop = tsi108_close;
1624         dev->hard_start_xmit = tsi108_send_packet;
1625         dev->set_mac_address = tsi108_set_mac;
1626         dev->set_multicast_list = tsi108_set_rx_mode;
1627         dev->get_stats = tsi108_get_stats;
1628         netif_napi_add(dev, &data->napi, tsi108_poll, 64);
1629         dev->do_ioctl = tsi108_do_ioctl;
1630         dev->ethtool_ops = &tsi108_ethtool_ops;
1631
1632         /* Apparently, the Linux networking code won't use scatter-gather
1633          * if the hardware doesn't do checksums.  However, it's faster
1634          * to checksum in place and use SG, as (among other reasons)
1635          * the cache won't be dirtied (which then has to be flushed
1636          * before DMA).  The checksumming is done by the driver (via
1637          * a new function skb_csum_dev() in net/core/skbuff.c).
1638          */
1639
1640         dev->features = NETIF_F_HIGHDMA;
1641
1642         spin_lock_init(&data->txlock);
1643         spin_lock_init(&data->misclock);
1644
1645         tsi108_reset_ether(data);
1646         tsi108_kill_phy(dev);
1647
1648         if ((err = tsi108_get_mac(dev)) != 0) {
1649                 printk(KERN_ERR "%s: Invalid MAC address.  Please correct.\n",
1650                        dev->name);
1651                 goto register_fail;
1652         }
1653
1654         tsi108_init_mac(dev);
1655         err = register_netdev(dev);
1656         if (err) {
1657                 printk(KERN_ERR "%s: Cannot register net device, aborting.\n",
1658                                 dev->name);
1659                 goto register_fail;
1660         }
1661
1662         platform_set_drvdata(pdev, dev);
1663         printk(KERN_INFO "%s: Tsi108 Gigabit Ethernet, MAC: %s\n",
1664                dev->name, print_mac(mac, dev->dev_addr));
1665 #ifdef DEBUG
1666         data->msg_enable = DEBUG;
1667         dump_eth_one(dev);
1668 #endif
1669
1670         return 0;
1671
1672 register_fail:
1673         iounmap(data->regs);
1674         iounmap(data->phyregs);
1675
1676 regs_fail:
1677         free_netdev(dev);
1678         return err;
1679 }
1680
1681 /* There's no way to either get interrupts from the PHY when
1682  * something changes, or to have the Tsi108 automatically communicate
1683  * with the PHY to reconfigure itself.
1684  *
1685  * Thus, we have to do it using a timer.
1686  */
1687
1688 static void tsi108_timed_checker(unsigned long dev_ptr)
1689 {
1690         struct net_device *dev = (struct net_device *)dev_ptr;
1691         struct tsi108_prv_data *data = netdev_priv(dev);
1692
1693         tsi108_check_phy(dev);
1694         tsi108_check_rxring(dev);
1695         mod_timer(&data->timer, jiffies + CHECK_PHY_INTERVAL);
1696 }
1697
1698 static int tsi108_ether_init(void)
1699 {
1700         int ret;
1701         ret = platform_driver_register (&tsi_eth_driver);
1702         if (ret < 0){
1703                 printk("tsi108_ether_init: error initializing ethernet "
1704                        "device\n");
1705                 return ret;
1706         }
1707         return 0;
1708 }
1709
1710 static int tsi108_ether_remove(struct platform_device *pdev)
1711 {
1712         struct net_device *dev = platform_get_drvdata(pdev);
1713         struct tsi108_prv_data *priv = netdev_priv(dev);
1714
1715         unregister_netdev(dev);
1716         tsi108_stop_ethernet(dev);
1717         platform_set_drvdata(pdev, NULL);
1718         iounmap(priv->regs);
1719         iounmap(priv->phyregs);
1720         free_netdev(dev);
1721
1722         return 0;
1723 }
1724 static void tsi108_ether_exit(void)
1725 {
1726         platform_driver_unregister(&tsi_eth_driver);
1727 }
1728
1729 module_init(tsi108_ether_init);
1730 module_exit(tsi108_ether_exit);
1731
1732 MODULE_AUTHOR("Tundra Semiconductor Corporation");
1733 MODULE_DESCRIPTION("Tsi108 Gigabit Ethernet driver");
1734 MODULE_LICENSE("GPL");
1735 MODULE_ALIAS("platform:tsi-ethernet");