drivers/net/ethernet/tundra/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/interrupt.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/spinlock.h>
  42 #include <linux/delay.h>
  43 #include <linux/crc32.h>
  44 #include <linux/mii.h>
  45 #include <linux/device.h>
  46 #include <linux/pci.h>
  47 #include <linux/rtnetlink.h>
  48 #include <linux/timer.h>
  49 #include <linux/platform_device.h>
  50 #include <linux/gfp.h>
  51
  52 #include <asm/io.h>
  53 #include <asm/tsi108.h>
  54
  55 #include "tsi108_eth.h"
  56
  57 #define MII_READ_DELAY 10000    /* max link wait time in msec */
  58
  59 #define TSI108_RXRING_LEN     256
  60
  61 /* NOTE: The driver currently does not support receiving packets
  62  * larger than the buffer size, so don't decrease this (unless you
  63  * want to add such support).
  64  */
  65 #define TSI108_RXBUF_SIZE     1536
  66
  67 #define TSI108_TXRING_LEN     256
  68
  69 #define TSI108_TX_INT_FREQ    64
  70
  71 /* Check the phy status every half a second. */
  72 #define CHECK_PHY_INTERVAL (HZ/2)
  73
  74 static int tsi108_init_one(struct platform_device *pdev);
  75 static int tsi108_ether_remove(struct platform_device *pdev);
  76
  77 struct tsi108_prv_data {
  78         void  __iomem *regs;    /* Base of normal regs */
  79         void  __iomem *phyregs; /* Base of register bank used for PHY access */
  80
  81         struct net_device *dev;
  82         struct napi_struct napi;
  83
  84         unsigned int phy;               /* Index of PHY for this interface */
  85         unsigned int irq_num;
  86         unsigned int id;
  87         unsigned int phy_type;
  88
  89         struct timer_list timer;/* Timer that triggers the check phy function */
  90         unsigned int rxtail;    /* Next entry in rxring to read */
  91         unsigned int rxhead;    /* Next entry in rxring to give a new buffer */
  92         unsigned int rxfree;    /* Number of free, allocated RX buffers */
  93
  94         unsigned int rxpending; /* Non-zero if there are still descriptors
  95                                  * to be processed from a previous descriptor
  96                                  * interrupt condition that has been cleared */
  97
  98         unsigned int txtail;    /* Next TX descriptor to check status on */
  99         unsigned int txhead;    /* Next TX descriptor to use */
 100
 101         /* Number of free TX descriptors.  This could be calculated from
 102          * rxhead and rxtail if one descriptor were left unused to disambiguate
 103          * full and empty conditions, but it's simpler to just keep track
 104          * explicitly. */
 105
 106         unsigned int txfree;
 107
 108         unsigned int phy_ok;            /* The PHY is currently powered on. */
 109
 110         /* PHY status (duplex is 1 for half, 2 for full,
 111          * so that the default 0 indicates that neither has
 112          * yet been configured). */
 113
 114         unsigned int link_up;
 115         unsigned int speed;
 116         unsigned int duplex;
 117
 118         tx_desc *txring;
 119         rx_desc *rxring;
 120         struct sk_buff *txskbs[TSI108_TXRING_LEN];
 121         struct sk_buff *rxskbs[TSI108_RXRING_LEN];
 122
 123         dma_addr_t txdma, rxdma;
 124
 125         /* txlock nests in misclock and phy_lock */
 126
 127         spinlock_t txlock, misclock;
 128
 129         /* stats is used to hold the upper bits of each hardware counter,
 130          * and tmpstats is used to hold the full values for returning
 131          * to the caller of get_stats().  They must be separate in case
 132          * an overflow interrupt occurs before the stats are consumed.
 133          */
 134
 135         struct net_device_stats stats;
 136         struct net_device_stats tmpstats;
 137
 138         /* These stats are kept separate in hardware, thus require individual
 139          * fields for handling carry.  They are combined in get_stats.
 140          */
 141
 142         unsigned long rx_fcs;   /* Add to rx_frame_errors */
 143         unsigned long rx_short_fcs;     /* Add to rx_frame_errors */
 144         unsigned long rx_long_fcs;      /* Add to rx_frame_errors */
 145         unsigned long rx_underruns;     /* Add to rx_length_errors */
 146         unsigned long rx_overruns;      /* Add to rx_length_errors */
 147
 148         unsigned long tx_coll_abort;    /* Add to tx_aborted_errors/collisions */
 149         unsigned long tx_pause_drop;    /* Add to tx_aborted_errors */
 150
 151         unsigned long mc_hash[16];
 152         u32 msg_enable;                 /* debug message level */
 153         struct mii_if_info mii_if;
 154         unsigned int init_media;
 155
 156         struct platform_device *pdev;
 157 };
 158
 159 /* Structure for a device driver */
 160
 161 static struct platform_driver tsi_eth_driver = {
 162         .probe = tsi108_init_one,
 163         .remove = tsi108_ether_remove,
 164         .driver = {
 165                 .name = "tsi-ethernet",
 166         },
 167 };
 168
 169 static void tsi108_timed_checker(struct timer_list *t);
 170
 171 #ifdef DEBUG
 172 static void dump_eth_one(struct net_device *dev)
 173 {
 174         struct tsi108_prv_data *data = netdev_priv(dev);
 175
 176         printk("Dumping %s...\n", dev->name);
 177         printk("intstat %x intmask %x phy_ok %d"
 178                " link %d speed %d duplex %d\n",
 179                TSI_READ(TSI108_EC_INTSTAT),
 180                TSI_READ(TSI108_EC_INTMASK), data->phy_ok,
 181                data->link_up, data->speed, data->duplex);
 182
 183         printk("TX: head %d, tail %d, free %d, stat %x, estat %x, err %x\n",
 184                data->txhead, data->txtail, data->txfree,
 185                TSI_READ(TSI108_EC_TXSTAT),
 186                TSI_READ(TSI108_EC_TXESTAT),
 187                TSI_READ(TSI108_EC_TXERR));
 188
 189         printk("RX: head %d, tail %d, free %d, stat %x,"
 190                " estat %x, err %x, pending %d\n\n",
 191                data->rxhead, data->rxtail, data->rxfree,
 192                TSI_READ(TSI108_EC_RXSTAT),
 193                TSI_READ(TSI108_EC_RXESTAT),
 194                TSI_READ(TSI108_EC_RXERR), data->rxpending);
 195 }
 196 #endif
 197
 198 /* Synchronization is needed between the thread and up/down events.
 199  * Note that the PHY is accessed through the same registers for both
 200  * interfaces, so this can't be made interface-specific.
 201  */
 202
 203 static DEFINE_SPINLOCK(phy_lock);
 204
 205 static int tsi108_read_mii(struct tsi108_prv_data *data, int reg)
 206 {
 207         unsigned i;
 208
 209         TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
 210                                 (data->phy << TSI108_MAC_MII_ADDR_PHY) |
 211                                 (reg << TSI108_MAC_MII_ADDR_REG));
 212         TSI_WRITE_PHY(TSI108_MAC_MII_CMD, 0);
 213         TSI_WRITE_PHY(TSI108_MAC_MII_CMD, TSI108_MAC_MII_CMD_READ);
 214         for (i = 0; i < 100; i++) {
 215                 if (!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
 216                       (TSI108_MAC_MII_IND_NOTVALID | TSI108_MAC_MII_IND_BUSY)))
 217                         break;
 218                 udelay(10);
 219         }
 220
 221         if (i == 100)
 222                 return 0xffff;
 223         else
 224                 return TSI_READ_PHY(TSI108_MAC_MII_DATAIN);
 225 }
 226
 227 static void tsi108_write_mii(struct tsi108_prv_data *data,
 228                                 int reg, u16 val)
 229 {
 230         unsigned i = 100;
 231         TSI_WRITE_PHY(TSI108_MAC_MII_ADDR,
 232                                 (data->phy << TSI108_MAC_MII_ADDR_PHY) |
 233                                 (reg << TSI108_MAC_MII_ADDR_REG));
 234         TSI_WRITE_PHY(TSI108_MAC_MII_DATAOUT, val);
 235         while (i--) {
 236                 if(!(TSI_READ_PHY(TSI108_MAC_MII_IND) &
 237                         TSI108_MAC_MII_IND_BUSY))
 238                         break;
 239                 udelay(10);
 240         }
 241 }
 242
 243 static int tsi108_mdio_read(struct net_device *dev, int addr, int reg)
 244 {
 245         struct tsi108_prv_data *data = netdev_priv(dev);
 246         return tsi108_read_mii(data, reg);
 247 }
 248
 249 static void tsi108_mdio_write(struct net_device *dev, int addr, int reg, int val)
 250 {
 251         struct tsi108_prv_data *data = netdev_priv(dev);
 252         tsi108_write_mii(data, reg, val);
 253 }
 254
 255 static inline void tsi108_write_tbi(struct tsi108_prv_data *data,
 256                                         int reg, u16 val)
 257 {
 258         unsigned i = 1000;
 259         TSI_WRITE(TSI108_MAC_MII_ADDR,
 260                              (0x1e << TSI108_MAC_MII_ADDR_PHY)
 261                              | (reg << TSI108_MAC_MII_ADDR_REG));
 262         TSI_WRITE(TSI108_MAC_MII_DATAOUT, val);
 263         while(i--) {
 264                 if(!(TSI_READ(TSI108_MAC_MII_IND) & TSI108_MAC_MII_IND_BUSY))
 265                         return;
 266                 udelay(10);
 267         }
 268         printk(KERN_ERR "%s function time out\n", __func__);
 269 }
 270
 271 static int mii_speed(struct mii_if_info *mii)
 272 {
 273         int advert, lpa, val, media;
 274         int lpa2 = 0;
 275         int speed;
 276
 277         if (!mii_link_ok(mii))
 278                 return 0;
 279
 280         val = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_BMSR);
 281         if ((val & BMSR_ANEGCOMPLETE) == 0)
 282                 return 0;
 283
 284         advert = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_ADVERTISE);
 285         lpa = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_LPA);
 286         media = mii_nway_result(advert & lpa);
 287
 288         if (mii->supports_gmii)
 289                 lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
 290
 291         speed = lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 :
 292                         (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? 100 : 10);
 293         return speed;
 294 }
 295
 296 static void tsi108_check_phy(struct net_device *dev)
 297 {
 298         struct tsi108_prv_data *data = netdev_priv(dev);
 299         u32 mac_cfg2_reg, portctrl_reg;
 300         u32 duplex;
 301         u32 speed;
 302         unsigned long flags;
 303
 304         spin_lock_irqsave(&phy_lock, flags);
 305
 306         if (!data->phy_ok)
 307                 goto out;
 308
 309         duplex = mii_check_media(&data->mii_if, netif_msg_link(data), data->init_media);
 310         data->init_media = 0;
 311
 312         if (netif_carrier_ok(dev)) {
 313
 314                 speed = mii_speed(&data->mii_if);
 315
 316                 if ((speed != data->speed) || duplex) {
 317
 318                         mac_cfg2_reg = TSI_READ(TSI108_MAC_CFG2);
 319                         portctrl_reg = TSI_READ(TSI108_EC_PORTCTRL);
 320
 321                         mac_cfg2_reg &= ~TSI108_MAC_CFG2_IFACE_MASK;
 322
 323                         if (speed == 1000) {
 324                                 mac_cfg2_reg |= TSI108_MAC_CFG2_GIG;
 325                                 portctrl_reg &= ~TSI108_EC_PORTCTRL_NOGIG;
 326                         } else {
 327                                 mac_cfg2_reg |= TSI108_MAC_CFG2_NOGIG;
 328                                 portctrl_reg |= TSI108_EC_PORTCTRL_NOGIG;
 329                         }
 330
 331                         data->speed = speed;
 332
 333                         if (data->mii_if.full_duplex) {
 334                                 mac_cfg2_reg |= TSI108_MAC_CFG2_FULLDUPLEX;
 335                                 portctrl_reg &= ~TSI108_EC_PORTCTRL_HALFDUPLEX;
 336                                 data->duplex = 2;
 337                         } else {
 338                                 mac_cfg2_reg &= ~TSI108_MAC_CFG2_FULLDUPLEX;
 339                                 portctrl_reg |= TSI108_EC_PORTCTRL_HALFDUPLEX;
 340                                 data->duplex = 1;
 341                         }
 342
 343                         TSI_WRITE(TSI108_MAC_CFG2, mac_cfg2_reg);
 344                         TSI_WRITE(TSI108_EC_PORTCTRL, portctrl_reg);
 345                 }
 346
 347                 if (data->link_up == 0) {
 348                         /* The manual says it can take 3-4 usecs for the speed change
 349                          * to take effect.
 350                          */
 351                         udelay(5);
 352
 353                         spin_lock(&data->txlock);
 354                         if (is_valid_ether_addr(dev->dev_addr) && data->txfree)
 355                                 netif_wake_queue(dev);
 356
 357                         data->link_up = 1;
 358                         spin_unlock(&data->txlock);
 359                 }
 360         } else {
 361                 if (data->link_up == 1) {
 362                         netif_stop_queue(dev);
 363                         data->link_up = 0;
 364                         printk(KERN_NOTICE "%s : link is down\n", dev->name);
 365                 }
 366
 367                 goto out;
 368         }
 369
 370
 371 out:
 372         spin_unlock_irqrestore(&phy_lock, flags);
 373 }
 374
 375 static inline void
 376 tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift,
 377                       unsigned long *upper)
 378 {
 379         if (carry & carry_bit)
 380                 *upper += carry_shift;
 381 }
 382
 383 static void tsi108_stat_carry(struct net_device *dev)
 384 {
 385         struct tsi108_prv_data *data = netdev_priv(dev);
 386         u32 carry1, carry2;
 387
 388         spin_lock_irq(&data->misclock);
 389
 390         carry1 = TSI_READ(TSI108_STAT_CARRY1);
 391         carry2 = TSI_READ(TSI108_STAT_CARRY2);
 392
 393         TSI_WRITE(TSI108_STAT_CARRY1, carry1);
 394         TSI_WRITE(TSI108_STAT_CARRY2, carry2);
 395
 396         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXBYTES,
 397                               TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
 398
 399         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXPKTS,
 400                               TSI108_STAT_RXPKTS_CARRY,
 401                               &data->stats.rx_packets);
 402
 403         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFCS,
 404                               TSI108_STAT_RXFCS_CARRY, &data->rx_fcs);
 405
 406         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXMCAST,
 407                               TSI108_STAT_RXMCAST_CARRY,
 408                               &data->stats.multicast);
 409
 410         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXALIGN,
 411                               TSI108_STAT_RXALIGN_CARRY,
 412                               &data->stats.rx_frame_errors);
 413
 414         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXLENGTH,
 415                               TSI108_STAT_RXLENGTH_CARRY,
 416                               &data->stats.rx_length_errors);
 417
 418         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXRUNT,
 419                               TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
 420
 421         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJUMBO,
 422                               TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
 423
 424         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFRAG,
 425                               TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
 426
 427         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJABBER,
 428                               TSI108_STAT_RXJABBER_CARRY, &data->rx_long_fcs);
 429
 430         tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXDROP,
 431                               TSI108_STAT_RXDROP_CARRY,
 432                               &data->stats.rx_missed_errors);
 433
 434         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXBYTES,
 435                               TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
 436
 437         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPKTS,
 438                               TSI108_STAT_TXPKTS_CARRY,
 439                               &data->stats.tx_packets);
 440
 441         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXDEF,
 442                               TSI108_STAT_TXEXDEF_CARRY,
 443                               &data->stats.tx_aborted_errors);
 444
 445         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXCOL,
 446                               TSI108_STAT_TXEXCOL_CARRY, &data->tx_coll_abort);
 447
 448         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXTCOL,
 449                               TSI108_STAT_TXTCOL_CARRY,
 450                               &data->stats.collisions);
 451
 452         tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPAUSE,
 453                               TSI108_STAT_TXPAUSEDROP_CARRY,
 454                               &data->tx_pause_drop);
 455
 456         spin_unlock_irq(&data->misclock);
 457 }
 458
 459 /* Read a stat counter atomically with respect to carries.
 460  * data->misclock must be held.
 461  */
 462 static inline unsigned long
 463 tsi108_read_stat(struct tsi108_prv_data * data, int reg, int carry_bit,
 464                  int carry_shift, unsigned long *upper)
 465 {
 466         int carryreg;
 467         unsigned long val;
 468
 469         if (reg < 0xb0)
 470                 carryreg = TSI108_STAT_CARRY1;
 471         else
 472                 carryreg = TSI108_STAT_CARRY2;
 473
 474       again:
 475         val = TSI_READ(reg) | *upper;
 476
 477         /* Check to see if it overflowed, but the interrupt hasn't
 478          * been serviced yet.  If so, handle the carry here, and
 479          * try again.
 480          */
 481
 482         if (unlikely(TSI_READ(carryreg) & carry_bit)) {
 483                 *upper += carry_shift;
 484                 TSI_WRITE(carryreg, carry_bit);
 485                 goto again;
 486         }
 487
 488         return val;
 489 }
 490
 491 static struct net_device_stats *tsi108_get_stats(struct net_device *dev)
 492 {
 493         unsigned long excol;
 494
 495         struct tsi108_prv_data *data = netdev_priv(dev);
 496         spin_lock_irq(&data->misclock);
 497
 498         data->tmpstats.rx_packets =
 499             tsi108_read_stat(data, TSI108_STAT_RXPKTS,
 500                              TSI108_STAT_CARRY1_RXPKTS,
 501                              TSI108_STAT_RXPKTS_CARRY, &data->stats.rx_packets);
 502
 503         data->tmpstats.tx_packets =
 504             tsi108_read_stat(data, TSI108_STAT_TXPKTS,
 505                              TSI108_STAT_CARRY2_TXPKTS,
 506                              TSI108_STAT_TXPKTS_CARRY, &data->stats.tx_packets);
 507
 508         data->tmpstats.rx_bytes =
 509             tsi108_read_stat(data, TSI108_STAT_RXBYTES,
 510                              TSI108_STAT_CARRY1_RXBYTES,
 511                              TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes);
 512
 513         data->tmpstats.tx_bytes =
 514             tsi108_read_stat(data, TSI108_STAT_TXBYTES,
 515                              TSI108_STAT_CARRY2_TXBYTES,
 516                              TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes);
 517
 518         data->tmpstats.multicast =
 519             tsi108_read_stat(data, TSI108_STAT_RXMCAST,
 520                              TSI108_STAT_CARRY1_RXMCAST,
 521                              TSI108_STAT_RXMCAST_CARRY, &data->stats.multicast);
 522
 523         excol = tsi108_read_stat(data, TSI108_STAT_TXEXCOL,
 524                                  TSI108_STAT_CARRY2_TXEXCOL,
 525                                  TSI108_STAT_TXEXCOL_CARRY,
 526                                  &data->tx_coll_abort);
 527
 528         data->tmpstats.collisions =
 529             tsi108_read_stat(data, TSI108_STAT_TXTCOL,
 530                              TSI108_STAT_CARRY2_TXTCOL,
 531                              TSI108_STAT_TXTCOL_CARRY, &data->stats.collisions);
 532
 533         data->tmpstats.collisions += excol;
 534
 535         data->tmpstats.rx_length_errors =
 536             tsi108_read_stat(data, TSI108_STAT_RXLENGTH,
 537                              TSI108_STAT_CARRY1_RXLENGTH,
 538                              TSI108_STAT_RXLENGTH_CARRY,
 539                              &data->stats.rx_length_errors);
 540
 541         data->tmpstats.rx_length_errors +=
 542             tsi108_read_stat(data, TSI108_STAT_RXRUNT,
 543                              TSI108_STAT_CARRY1_RXRUNT,
 544                              TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns);
 545
 546         data->tmpstats.rx_length_errors +=
 547             tsi108_read_stat(data, TSI108_STAT_RXJUMBO,
 548                              TSI108_STAT_CARRY1_RXJUMBO,
 549                              TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns);
 550
 551         data->tmpstats.rx_frame_errors =
 552             tsi108_read_stat(data, TSI108_STAT_RXALIGN,
 553                              TSI108_STAT_CARRY1_RXALIGN,
 554                              TSI108_STAT_RXALIGN_CARRY,
 555                              &data->stats.rx_frame_errors);
 556
 557         data->tmpstats.rx_frame_errors +=
 558             tsi108_read_stat(data, TSI108_STAT_RXFCS,
 559                              TSI108_STAT_CARRY1_RXFCS, TSI108_STAT_RXFCS_CARRY,
 560                              &data->rx_fcs);
 561
 562         data->tmpstats.rx_frame_errors +=
 563             tsi108_read_stat(data, TSI108_STAT_RXFRAG,
 564                              TSI108_STAT_CARRY1_RXFRAG,
 565                              TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs);
 566
 567         data->tmpstats.rx_missed_errors =
 568             tsi108_read_stat(data, TSI108_STAT_RXDROP,
 569                              TSI108_STAT_CARRY1_RXDROP,
 570                              TSI108_STAT_RXDROP_CARRY,
 571                              &data->stats.rx_missed_errors);
 572
 573         /* These three are maintained by software. */
 574         data->tmpstats.rx_fifo_errors = data->stats.rx_fifo_errors;
 575         data->tmpstats.rx_crc_errors = data->stats.rx_crc_errors;
 576
 577         data->tmpstats.tx_aborted_errors =
 578             tsi108_read_stat(data, TSI108_STAT_TXEXDEF,
 579                              TSI108_STAT_CARRY2_TXEXDEF,
 580                              TSI108_STAT_TXEXDEF_CARRY,
 581                              &data->stats.tx_aborted_errors);
 582
 583         data->tmpstats.tx_aborted_errors +=
 584             tsi108_read_stat(data, TSI108_STAT_TXPAUSEDROP,
 585                              TSI108_STAT_CARRY2_TXPAUSE,
 586                              TSI108_STAT_TXPAUSEDROP_CARRY,
 587                              &data->tx_pause_drop);
 588
 589         data->tmpstats.tx_aborted_errors += excol;
 590
 591         data->tmpstats.tx_errors = data->tmpstats.tx_aborted_errors;
 592         data->tmpstats.rx_errors = data->tmpstats.rx_length_errors +
 593             data->tmpstats.rx_crc_errors +
 594             data->tmpstats.rx_frame_errors +
 595             data->tmpstats.rx_fifo_errors + data->tmpstats.rx_missed_errors;
 596
 597         spin_unlock_irq(&data->misclock);
 598         return &data->tmpstats;
 599 }
 600
 601 static void tsi108_restart_rx(struct tsi108_prv_data * data, struct net_device *dev)
 602 {
 603         TSI_WRITE(TSI108_EC_RXQ_PTRHIGH,
 604                              TSI108_EC_RXQ_PTRHIGH_VALID);
 605
 606         TSI_WRITE(TSI108_EC_RXCTRL, TSI108_EC_RXCTRL_GO
 607                              | TSI108_EC_RXCTRL_QUEUE0);
 608 }
 609
 610 static void tsi108_restart_tx(struct tsi108_prv_data * data)
 611 {
 612         TSI_WRITE(TSI108_EC_TXQ_PTRHIGH,
 613                              TSI108_EC_TXQ_PTRHIGH_VALID);
 614
 615         TSI_WRITE(TSI108_EC_TXCTRL, TSI108_EC_TXCTRL_IDLEINT |
 616                              TSI108_EC_TXCTRL_GO | TSI108_EC_TXCTRL_QUEUE0);
 617 }
 618
 619 /* txlock must be held by caller, with IRQs disabled, and
 620  * with permission to re-enable them when the lock is dropped.
 621  */
 622 static void tsi108_complete_tx(struct net_device *dev)
 623 {
 624         struct tsi108_prv_data *data = netdev_priv(dev);
 625         int tx;
 626         struct sk_buff *skb;
 627         int release = 0;
 628
 629         while (!data->txfree || data->txhead != data->txtail) {
 630                 tx = data->txtail;
 631
 632                 if (data->txring[tx].misc & TSI108_TX_OWN)
 633                         break;
 634
 635                 skb = data->txskbs[tx];
 636
 637                 if (!(data->txring[tx].misc & TSI108_TX_OK))
 638                         printk("%s: bad tx packet, misc %x\n",
 639                                dev->name, data->txring[tx].misc);
 640
 641                 data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
 642                 data->txfree++;
 643
 644                 if (data->txring[tx].misc & TSI108_TX_EOF) {
 645                         dev_kfree_skb_any(skb);
 646                         release++;
 647                 }
 648         }
 649
 650         if (release) {
 651                 if (is_valid_ether_addr(dev->dev_addr) && data->link_up)
 652                         netif_wake_queue(dev);
 653         }
 654 }
 655
 656 static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev)
 657 {
 658         struct tsi108_prv_data *data = netdev_priv(dev);
 659         int frags = skb_shinfo(skb)->nr_frags + 1;
 660         int i;
 661
 662         if (!data->phy_ok && net_ratelimit())
 663                 printk(KERN_ERR "%s: Transmit while PHY is down!\n", dev->name);
 664
 665         if (!data->link_up) {
 666                 printk(KERN_ERR "%s: Transmit while link is down!\n",
 667                        dev->name);
 668                 netif_stop_queue(dev);
 669                 return NETDEV_TX_BUSY;
 670         }
 671
 672         if (data->txfree < MAX_SKB_FRAGS + 1) {
 673                 netif_stop_queue(dev);
 674
 675                 if (net_ratelimit())
 676                         printk(KERN_ERR "%s: Transmit with full tx ring!\n",
 677                                dev->name);
 678                 return NETDEV_TX_BUSY;
 679         }
 680
 681         if (data->txfree - frags < MAX_SKB_FRAGS + 1) {
 682                 netif_stop_queue(dev);
 683         }
 684
 685         spin_lock_irq(&data->txlock);
 686
 687         for (i = 0; i < frags; i++) {
 688                 int misc = 0;
 689                 int tx = data->txhead;
 690
 691                 /* This is done to mark every TSI108_TX_INT_FREQ tx buffers with
 692                  * the interrupt bit.  TX descriptor-complete interrupts are
 693                  * enabled when the queue fills up, and masked when there is
 694                  * still free space.  This way, when saturating the outbound
 695                  * link, the tx interrupts are kept to a reasonable level.
 696                  * When the queue is not full, reclamation of skbs still occurs
 697                  * as new packets are transmitted, or on a queue-empty
 698                  * interrupt.
 699                  */
 700
 701                 if ((tx % TSI108_TX_INT_FREQ == 0) &&
 702                     ((TSI108_TXRING_LEN - data->txfree) >= TSI108_TX_INT_FREQ))
 703                         misc = TSI108_TX_INT;
 704
 705                 data->txskbs[tx] = skb;
 706
 707                 if (i == 0) {
 708                         data->txring[tx].buf0 = dma_map_single(&data->pdev->dev,
 709                                         skb->data, skb_headlen(skb),
 710                                         DMA_TO_DEVICE);
 711                         data->txring[tx].len = skb_headlen(skb);
 712                         misc |= TSI108_TX_SOF;
 713                 } else {
 714                         const skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
 715
 716                         data->txring[tx].buf0 =
 717                                 skb_frag_dma_map(&data->pdev->dev, frag,
 718                                                 0, skb_frag_size(frag),
 719                                                 DMA_TO_DEVICE);
 720                         data->txring[tx].len = skb_frag_size(frag);
 721                 }
 722
 723                 if (i == frags - 1)
 724                         misc |= TSI108_TX_EOF;
 725
 726                 if (netif_msg_pktdata(data)) {
 727                         int i;
 728                         printk("%s: Tx Frame contents (%d)\n", dev->name,
 729                                skb->len);
 730                         for (i = 0; i < skb->len; i++)
 731                                 printk(" %2.2x", skb->data[i]);
 732                         printk(".\n");
 733                 }
 734                 data->txring[tx].misc = misc | TSI108_TX_OWN;
 735
 736                 data->txhead = (data->txhead + 1) % TSI108_TXRING_LEN;
 737                 data->txfree--;
 738         }
 739
 740         tsi108_complete_tx(dev);
 741
 742         /* This must be done after the check for completed tx descriptors,
 743          * so that the tail pointer is correct.
 744          */
 745
 746         if (!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_QUEUE0))
 747                 tsi108_restart_tx(data);
 748
 749         spin_unlock_irq(&data->txlock);
 750         return NETDEV_TX_OK;
 751 }
 752
 753 static int tsi108_complete_rx(struct net_device *dev, int budget)
 754 {
 755         struct tsi108_prv_data *data = netdev_priv(dev);
 756         int done = 0;
 757
 758         while (data->rxfree && done != budget) {
 759                 int rx = data->rxtail;
 760                 struct sk_buff *skb;
 761
 762                 if (data->rxring[rx].misc & TSI108_RX_OWN)
 763                         break;
 764
 765                 skb = data->rxskbs[rx];
 766                 data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
 767                 data->rxfree--;
 768                 done++;
 769
 770                 if (data->rxring[rx].misc & TSI108_RX_BAD) {
 771                         spin_lock_irq(&data->misclock);
 772
 773                         if (data->rxring[rx].misc & TSI108_RX_CRC)
 774                                 data->stats.rx_crc_errors++;
 775                         if (data->rxring[rx].misc & TSI108_RX_OVER)
 776                                 data->stats.rx_fifo_errors++;
 777
 778                         spin_unlock_irq(&data->misclock);
 779
 780                         dev_kfree_skb_any(skb);
 781                         continue;
 782                 }
 783                 if (netif_msg_pktdata(data)) {
 784                         int i;
 785                         printk("%s: Rx Frame contents (%d)\n",
 786                                dev->name, data->rxring[rx].len);
 787                         for (i = 0; i < data->rxring[rx].len; i++)
 788                                 printk(" %2.2x", skb->data[i]);
 789                         printk(".\n");
 790                 }
 791
 792                 skb_put(skb, data->rxring[rx].len);
 793                 skb->protocol = eth_type_trans(skb, dev);
 794                 netif_receive_skb(skb);
 795         }
 796
 797         return done;
 798 }
 799
 800 static int tsi108_refill_rx(struct net_device *dev, int budget)
 801 {
 802         struct tsi108_prv_data *data = netdev_priv(dev);
 803         int done = 0;
 804
 805         while (data->rxfree != TSI108_RXRING_LEN && done != budget) {
 806                 int rx = data->rxhead;
 807                 struct sk_buff *skb;
 808
 809                 skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE);
 810                 data->rxskbs[rx] = skb;
 811                 if (!skb)
 812                         break;
 813
 814                 data->rxring[rx].buf0 = dma_map_single(&data->pdev->dev,
 815                                 skb->data, TSI108_RX_SKB_SIZE,
 816                                 DMA_FROM_DEVICE);
 817
 818                 /* Sometimes the hardware sets blen to zero after packet
 819                  * reception, even though the manual says that it's only ever
 820                  * modified by the driver.
 821                  */
 822
 823                 data->rxring[rx].blen = TSI108_RX_SKB_SIZE;
 824                 data->rxring[rx].misc = TSI108_RX_OWN | TSI108_RX_INT;
 825
 826                 data->rxhead = (data->rxhead + 1) % TSI108_RXRING_LEN;
 827                 data->rxfree++;
 828                 done++;
 829         }
 830
 831         if (done != 0 && !(TSI_READ(TSI108_EC_RXSTAT) &
 832                            TSI108_EC_RXSTAT_QUEUE0))
 833                 tsi108_restart_rx(data, dev);
 834
 835         return done;
 836 }
 837
 838 static int tsi108_poll(struct napi_struct *napi, int budget)
 839 {
 840         struct tsi108_prv_data *data = container_of(napi, struct tsi108_prv_data, napi);
 841         struct net_device *dev = data->dev;
 842         u32 estat = TSI_READ(TSI108_EC_RXESTAT);
 843         u32 intstat = TSI_READ(TSI108_EC_INTSTAT);
 844         int num_received = 0, num_filled = 0;
 845
 846         intstat &= TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
 847             TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR | TSI108_INT_RXWAIT;
 848
 849         TSI_WRITE(TSI108_EC_RXESTAT, estat);
 850         TSI_WRITE(TSI108_EC_INTSTAT, intstat);
 851
 852         if (data->rxpending || (estat & TSI108_EC_RXESTAT_Q0_DESCINT))
 853                 num_received = tsi108_complete_rx(dev, budget);
 854
 855         /* This should normally fill no more slots than the number of
 856          * packets received in tsi108_complete_rx().  The exception
 857          * is when we previously ran out of memory for RX SKBs.  In that
 858          * case, it's helpful to obey the budget, not only so that the
 859          * CPU isn't hogged, but so that memory (which may still be low)
 860          * is not hogged by one device.
 861          *
 862          * A work unit is considered to be two SKBs to allow us to catch
 863          * up when the ring has shrunk due to out-of-memory but we're
 864          * still removing the full budget's worth of packets each time.
 865          */
 866
 867         if (data->rxfree < TSI108_RXRING_LEN)
 868                 num_filled = tsi108_refill_rx(dev, budget * 2);
 869
 870         if (intstat & TSI108_INT_RXERROR) {
 871                 u32 err = TSI_READ(TSI108_EC_RXERR);
 872                 TSI_WRITE(TSI108_EC_RXERR, err);
 873
 874                 if (err) {
 875                         if (net_ratelimit())
 876                                 printk(KERN_DEBUG "%s: RX error %x\n",
 877                                        dev->name, err);
 878
 879                         if (!(TSI_READ(TSI108_EC_RXSTAT) &
 880                               TSI108_EC_RXSTAT_QUEUE0))
 881                                 tsi108_restart_rx(data, dev);
 882                 }
 883         }
 884
 885         if (intstat & TSI108_INT_RXOVERRUN) {
 886                 spin_lock_irq(&data->misclock);
 887                 data->stats.rx_fifo_errors++;
 888                 spin_unlock_irq(&data->misclock);
 889         }
 890
 891         if (num_received < budget) {
 892                 data->rxpending = 0;
 893                 napi_complete_done(napi, num_received);
 894
 895                 TSI_WRITE(TSI108_EC_INTMASK,
 896                                      TSI_READ(TSI108_EC_INTMASK)
 897                                      & ~(TSI108_INT_RXQUEUE0
 898                                          | TSI108_INT_RXTHRESH |
 899                                          TSI108_INT_RXOVERRUN |
 900                                          TSI108_INT_RXERROR |
 901                                          TSI108_INT_RXWAIT));
 902         } else {
 903                 data->rxpending = 1;
 904         }
 905
 906         return num_received;
 907 }
 908
 909 static void tsi108_rx_int(struct net_device *dev)
 910 {
 911         struct tsi108_prv_data *data = netdev_priv(dev);
 912
 913         /* A race could cause dev to already be scheduled, so it's not an
 914          * error if that happens (and interrupts shouldn't be re-masked,
 915          * because that can cause harmful races, if poll has already
 916          * unmasked them but not cleared LINK_STATE_SCHED).
 917          *
 918          * This can happen if this code races with tsi108_poll(), which masks
 919          * the interrupts after tsi108_irq_one() read the mask, but before
 920          * napi_schedule is called.  It could also happen due to calls
 921          * from tsi108_check_rxring().
 922          */
 923
 924         if (napi_schedule_prep(&data->napi)) {
 925                 /* Mask, rather than ack, the receive interrupts.  The ack
 926                  * will happen in tsi108_poll().
 927                  */
 928
 929                 TSI_WRITE(TSI108_EC_INTMASK,
 930                                      TSI_READ(TSI108_EC_INTMASK) |
 931                                      TSI108_INT_RXQUEUE0
 932                                      | TSI108_INT_RXTHRESH |
 933                                      TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR |
 934                                      TSI108_INT_RXWAIT);
 935                 __napi_schedule(&data->napi);
 936         } else {
 937                 if (!netif_running(dev)) {
 938                         /* This can happen if an interrupt occurs while the
 939                          * interface is being brought down, as the START
 940                          * bit is cleared before the stop function is called.
 941                          *
 942                          * In this case, the interrupts must be masked, or
 943                          * they will continue indefinitely.
 944                          *
 945                          * There's a race here if the interface is brought down
 946                          * and then up in rapid succession, as the device could
 947                          * be made running after the above check and before
 948                          * the masking below.  This will only happen if the IRQ
 949                          * thread has a lower priority than the task brining
 950                          * up the interface.  Fixing this race would likely
 951                          * require changes in generic code.
 952                          */
 953
 954                         TSI_WRITE(TSI108_EC_INTMASK,
 955                                              TSI_READ
 956                                              (TSI108_EC_INTMASK) |
 957                                              TSI108_INT_RXQUEUE0 |
 958                                              TSI108_INT_RXTHRESH |
 959                                              TSI108_INT_RXOVERRUN |
 960                                              TSI108_INT_RXERROR |
 961                                              TSI108_INT_RXWAIT);
 962                 }
 963         }
 964 }
 965
 966 /* If the RX ring has run out of memory, try periodically
 967  * to allocate some more, as otherwise poll would never
 968  * get called (apart from the initial end-of-queue condition).
 969  *
 970  * This is called once per second (by default) from the thread.
 971  */
 972
 973 static void tsi108_check_rxring(struct net_device *dev)
 974 {
 975         struct tsi108_prv_data *data = netdev_priv(dev);
 976
 977         /* A poll is scheduled, as opposed to caling tsi108_refill_rx
 978          * directly, so as to keep the receive path single-threaded
 979          * (and thus not needing a lock).
 980          */
 981
 982         if (netif_running(dev) && data->rxfree < TSI108_RXRING_LEN / 4)
 983                 tsi108_rx_int(dev);
 984 }
 985
 986 static void tsi108_tx_int(struct net_device *dev)
 987 {
 988         struct tsi108_prv_data *data = netdev_priv(dev);
 989         u32 estat = TSI_READ(TSI108_EC_TXESTAT);
 990
 991         TSI_WRITE(TSI108_EC_TXESTAT, estat);
 992         TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_TXQUEUE0 |
 993                              TSI108_INT_TXIDLE | TSI108_INT_TXERROR);
 994         if (estat & TSI108_EC_TXESTAT_Q0_ERR) {
 995                 u32 err = TSI_READ(TSI108_EC_TXERR);
 996                 TSI_WRITE(TSI108_EC_TXERR, err);
 997
 998                 if (err && net_ratelimit())
 999                         printk(KERN_ERR "%s: TX error %x\n", dev->name, err);
1000         }
1001
1002         if (estat & (TSI108_EC_TXESTAT_Q0_DESCINT | TSI108_EC_TXESTAT_Q0_EOQ)) {
1003                 spin_lock(&data->txlock);
1004                 tsi108_complete_tx(dev);
1005                 spin_unlock(&data->txlock);
1006         }
1007 }
1008
1009
1010 static irqreturn_t tsi108_irq(int irq, void *dev_id)
1011 {
1012         struct net_device *dev = dev_id;
1013         struct tsi108_prv_data *data = netdev_priv(dev);
1014         u32 stat = TSI_READ(TSI108_EC_INTSTAT);
1015
1016         if (!(stat & TSI108_INT_ANY))
1017                 return IRQ_NONE;        /* Not our interrupt */
1018
1019         stat &= ~TSI_READ(TSI108_EC_INTMASK);
1020
1021         if (stat & (TSI108_INT_TXQUEUE0 | TSI108_INT_TXIDLE |
1022                     TSI108_INT_TXERROR))
1023                 tsi108_tx_int(dev);
1024         if (stat & (TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH |
1025                     TSI108_INT_RXWAIT | TSI108_INT_RXOVERRUN |
1026                     TSI108_INT_RXERROR))
1027                 tsi108_rx_int(dev);
1028
1029         if (stat & TSI108_INT_SFN) {
1030                 if (net_ratelimit())
1031                         printk(KERN_DEBUG "%s: SFN error\n", dev->name);
1032                 TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_SFN);
1033         }
1034
1035         if (stat & TSI108_INT_STATCARRY) {
1036                 tsi108_stat_carry(dev);
1037                 TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_STATCARRY);
1038         }
1039
1040         return IRQ_HANDLED;
1041 }
1042
1043 static void tsi108_stop_ethernet(struct net_device *dev)
1044 {
1045         struct tsi108_prv_data *data = netdev_priv(dev);
1046         int i = 1000;
1047         /* Disable all TX and RX queues ... */
1048         TSI_WRITE(TSI108_EC_TXCTRL, 0);
1049         TSI_WRITE(TSI108_EC_RXCTRL, 0);
1050
1051         /* ...and wait for them to become idle */
1052         while(i--) {
1053                 if(!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_ACTIVE))
1054                         break;
1055                 udelay(10);
1056         }
1057         i = 1000;
1058         while(i--){
1059                 if(!(TSI_READ(TSI108_EC_RXSTAT) & TSI108_EC_RXSTAT_ACTIVE))
1060                         return;
1061                 udelay(10);
1062         }
1063         printk(KERN_ERR "%s function time out\n", __func__);
1064 }
1065
1066 static void tsi108_reset_ether(struct tsi108_prv_data * data)
1067 {
1068         TSI_WRITE(TSI108_MAC_CFG1, TSI108_MAC_CFG1_SOFTRST);
1069         udelay(100);
1070         TSI_WRITE(TSI108_MAC_CFG1, 0);
1071
1072         TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATRST);
1073         udelay(100);
1074         TSI_WRITE(TSI108_EC_PORTCTRL,
1075                              TSI_READ(TSI108_EC_PORTCTRL) &
1076                              ~TSI108_EC_PORTCTRL_STATRST);
1077
1078         TSI_WRITE(TSI108_EC_TXCFG, TSI108_EC_TXCFG_RST);
1079         udelay(100);
1080         TSI_WRITE(TSI108_EC_TXCFG,
1081                              TSI_READ(TSI108_EC_TXCFG) &
1082                              ~TSI108_EC_TXCFG_RST);
1083
1084         TSI_WRITE(TSI108_EC_RXCFG, TSI108_EC_RXCFG_RST);
1085         udelay(100);
1086         TSI_WRITE(TSI108_EC_RXCFG,
1087                              TSI_READ(TSI108_EC_RXCFG) &
1088                              ~TSI108_EC_RXCFG_RST);
1089
1090         TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
1091                              TSI_READ(TSI108_MAC_MII_MGMT_CFG) |
1092                              TSI108_MAC_MII_MGMT_RST);
1093         udelay(100);
1094         TSI_WRITE(TSI108_MAC_MII_MGMT_CFG,
1095                              (TSI_READ(TSI108_MAC_MII_MGMT_CFG) &
1096                              ~(TSI108_MAC_MII_MGMT_RST |
1097                                TSI108_MAC_MII_MGMT_CLK)) | 0x07);
1098 }
1099
1100 static int tsi108_get_mac(struct net_device *dev)
1101 {
1102         struct tsi108_prv_data *data = netdev_priv(dev);
1103         u32 word1 = TSI_READ(TSI108_MAC_ADDR1);
1104         u32 word2 = TSI_READ(TSI108_MAC_ADDR2);
1105
1106         /* Note that the octets are reversed from what the manual says,
1107          * producing an even weirder ordering...
1108          */
1109         if (word2 == 0 && word1 == 0) {
1110                 dev->dev_addr[0] = 0x00;
1111                 dev->dev_addr[1] = 0x06;
1112                 dev->dev_addr[2] = 0xd2;
1113                 dev->dev_addr[3] = 0x00;
1114                 dev->dev_addr[4] = 0x00;
1115                 if (0x8 == data->phy)
1116                         dev->dev_addr[5] = 0x01;
1117                 else
1118                         dev->dev_addr[5] = 0x02;
1119
1120                 word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
1121
1122                 word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
1123                     (dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
1124
1125                 TSI_WRITE(TSI108_MAC_ADDR1, word1);
1126                 TSI_WRITE(TSI108_MAC_ADDR2, word2);
1127         } else {
1128                 dev->dev_addr[0] = (word2 >> 16) & 0xff;
1129                 dev->dev_addr[1] = (word2 >> 24) & 0xff;
1130                 dev->dev_addr[2] = (word1 >> 0) & 0xff;
1131                 dev->dev_addr[3] = (word1 >> 8) & 0xff;
1132                 dev->dev_addr[4] = (word1 >> 16) & 0xff;
1133                 dev->dev_addr[5] = (word1 >> 24) & 0xff;
1134         }
1135
1136         if (!is_valid_ether_addr(dev->dev_addr)) {
1137                 printk(KERN_ERR
1138                        "%s: Invalid MAC address. word1: %08x, word2: %08x\n",
1139                        dev->name, word1, word2);
1140                 return -EINVAL;
1141         }
1142
1143         return 0;
1144 }
1145
1146 static int tsi108_set_mac(struct net_device *dev, void *addr)
1147 {
1148         struct tsi108_prv_data *data = netdev_priv(dev);
1149         u32 word1, word2;
1150         int i;
1151
1152         if (!is_valid_ether_addr(addr))
1153                 return -EADDRNOTAVAIL;
1154
1155         for (i = 0; i < 6; i++)
1156                 /* +2 is for the offset of the HW addr type */
1157                 dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
1158
1159         word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24);
1160
1161         word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) |
1162             (dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24);
1163
1164         spin_lock_irq(&data->misclock);
1165         TSI_WRITE(TSI108_MAC_ADDR1, word1);
1166         TSI_WRITE(TSI108_MAC_ADDR2, word2);
1167         spin_lock(&data->txlock);
1168
1169         if (data->txfree && data->link_up)
1170                 netif_wake_queue(dev);
1171
1172         spin_unlock(&data->txlock);
1173         spin_unlock_irq(&data->misclock);
1174         return 0;
1175 }
1176
1177 /* Protected by dev->xmit_lock. */
1178 static void tsi108_set_rx_mode(struct net_device *dev)
1179 {
1180         struct tsi108_prv_data *data = netdev_priv(dev);
1181         u32 rxcfg = TSI_READ(TSI108_EC_RXCFG);
1182
1183         if (dev->flags & IFF_PROMISC) {
1184                 rxcfg &= ~(TSI108_EC_RXCFG_UC_HASH | TSI108_EC_RXCFG_MC_HASH);
1185                 rxcfg |= TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE;
1186                 goto out;
1187         }
1188
1189         rxcfg &= ~(TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE);
1190
1191         if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
1192                 int i;
1193                 struct netdev_hw_addr *ha;
1194                 rxcfg |= TSI108_EC_RXCFG_MFE | TSI108_EC_RXCFG_MC_HASH;
1195
1196                 memset(data->mc_hash, 0, sizeof(data->mc_hash));
1197
1198                 netdev_for_each_mc_addr(ha, dev) {
1199                         u32 hash, crc;
1200
1201                         crc = ether_crc(6, ha->addr);
1202                         hash = crc >> 23;
1203                         __set_bit(hash, &data->mc_hash[0]);
1204                 }
1205
1206                 TSI_WRITE(TSI108_EC_HASHADDR,
1207                                      TSI108_EC_HASHADDR_AUTOINC |
1208                                      TSI108_EC_HASHADDR_MCAST);
1209
1210                 for (i = 0; i < 16; i++) {
1211                         /* The manual says that the hardware may drop
1212                          * back-to-back writes to the data register.
1213                          */
1214                         udelay(1);
1215                         TSI_WRITE(TSI108_EC_HASHDATA,
1216                                              data->mc_hash[i]);
1217                 }
1218         }
1219
1220       out:
1221         TSI_WRITE(TSI108_EC_RXCFG, rxcfg);
1222 }
1223
1224 static void tsi108_init_phy(struct net_device *dev)
1225 {
1226         struct tsi108_prv_data *data = netdev_priv(dev);
1227         u32 i = 0;
1228         u16 phyval = 0;
1229         unsigned long flags;
1230
1231         spin_lock_irqsave(&phy_lock, flags);
1232
1233         tsi108_write_mii(data, MII_BMCR, BMCR_RESET);
1234         while (--i) {
1235                 if(!(tsi108_read_mii(data, MII_BMCR) & BMCR_RESET))
1236                         break;
1237                 udelay(10);
1238         }
1239         if (i == 0)
1240                 printk(KERN_ERR "%s function time out\n", __func__);
1241
1242         if (data->phy_type == TSI108_PHY_BCM54XX) {
1243                 tsi108_write_mii(data, 0x09, 0x0300);
1244                 tsi108_write_mii(data, 0x10, 0x1020);
1245                 tsi108_write_mii(data, 0x1c, 0x8c00);
1246         }
1247
1248         tsi108_write_mii(data,
1249                          MII_BMCR,
1250                          BMCR_ANENABLE | BMCR_ANRESTART);
1251         while (tsi108_read_mii(data, MII_BMCR) & BMCR_ANRESTART)
1252                 cpu_relax();
1253
1254         /* Set G/MII mode and receive clock select in TBI control #2.  The
1255          * second port won't work if this isn't done, even though we don't
1256          * use TBI mode.
1257          */
1258
1259         tsi108_write_tbi(data, 0x11, 0x30);
1260
1261         /* FIXME: It seems to take more than 2 back-to-back reads to the
1262          * PHY_STAT register before the link up status bit is set.
1263          */
1264
1265         data->link_up = 0;
1266
1267         while (!((phyval = tsi108_read_mii(data, MII_BMSR)) &
1268                  BMSR_LSTATUS)) {
1269                 if (i++ > (MII_READ_DELAY / 10)) {
1270                         break;
1271                 }
1272                 spin_unlock_irqrestore(&phy_lock, flags);
1273                 msleep(10);
1274                 spin_lock_irqsave(&phy_lock, flags);
1275         }
1276
1277         data->mii_if.supports_gmii = mii_check_gmii_support(&data->mii_if);
1278         printk(KERN_DEBUG "PHY_STAT reg contains %08x\n", phyval);
1279         data->phy_ok = 1;
1280         data->init_media = 1;
1281         spin_unlock_irqrestore(&phy_lock, flags);
1282 }
1283
1284 static void tsi108_kill_phy(struct net_device *dev)
1285 {
1286         struct tsi108_prv_data *data = netdev_priv(dev);
1287         unsigned long flags;
1288
1289         spin_lock_irqsave(&phy_lock, flags);
1290         tsi108_write_mii(data, MII_BMCR, BMCR_PDOWN);
1291         data->phy_ok = 0;
1292         spin_unlock_irqrestore(&phy_lock, flags);
1293 }
1294
1295 static int tsi108_open(struct net_device *dev)
1296 {
1297         int i;
1298         struct tsi108_prv_data *data = netdev_priv(dev);
1299         unsigned int rxring_size = TSI108_RXRING_LEN * sizeof(rx_desc);
1300         unsigned int txring_size = TSI108_TXRING_LEN * sizeof(tx_desc);
1301
1302         i = request_irq(data->irq_num, tsi108_irq, 0, dev->name, dev);
1303         if (i != 0) {
1304                 printk(KERN_ERR "tsi108_eth%d: Could not allocate IRQ%d.\n",
1305                        data->id, data->irq_num);
1306                 return i;
1307         } else {
1308                 dev->irq = data->irq_num;
1309                 printk(KERN_NOTICE
1310                        "tsi108_open : Port %d Assigned IRQ %d to %s\n",
1311                        data->id, dev->irq, dev->name);
1312         }
1313
1314         data->rxring = dma_alloc_coherent(&data->pdev->dev, rxring_size,
1315                                           &data->rxdma, GFP_KERNEL);
1316         if (!data->rxring)
1317                 return -ENOMEM;
1318
1319         data->txring = dma_alloc_coherent(&data->pdev->dev, txring_size,
1320                                           &data->txdma, GFP_KERNEL);
1321         if (!data->txring) {
1322                 dma_free_coherent(&data->pdev->dev, rxring_size, data->rxring,
1323                                     data->rxdma);
1324                 return -ENOMEM;
1325         }
1326
1327         for (i = 0; i < TSI108_RXRING_LEN; i++) {
1328                 data->rxring[i].next0 = data->rxdma + (i + 1) * sizeof(rx_desc);
1329                 data->rxring[i].blen = TSI108_RXBUF_SIZE;
1330                 data->rxring[i].vlan = 0;
1331         }
1332
1333         data->rxring[TSI108_RXRING_LEN - 1].next0 = data->rxdma;
1334
1335         data->rxtail = 0;
1336         data->rxhead = 0;
1337
1338         for (i = 0; i < TSI108_RXRING_LEN; i++) {
1339                 struct sk_buff *skb;
1340
1341                 skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE);
1342                 if (!skb) {
1343                         /* Bah.  No memory for now, but maybe we'll get
1344                          * some more later.
1345                          * For now, we'll live with the smaller ring.
1346                          */
1347                         printk(KERN_WARNING
1348                                "%s: Could only allocate %d receive skb(s).\n",
1349                                dev->name, i);
1350                         data->rxhead = i;
1351                         break;
1352                 }
1353
1354                 data->rxskbs[i] = skb;
1355                 data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data);
1356                 data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT;
1357         }
1358
1359         data->rxfree = i;
1360         TSI_WRITE(TSI108_EC_RXQ_PTRLOW, data->rxdma);
1361
1362         for (i = 0; i < TSI108_TXRING_LEN; i++) {
1363                 data->txring[i].next0 = data->txdma + (i + 1) * sizeof(tx_desc);
1364                 data->txring[i].misc = 0;
1365         }
1366
1367         data->txring[TSI108_TXRING_LEN - 1].next0 = data->txdma;
1368         data->txtail = 0;
1369         data->txhead = 0;
1370         data->txfree = TSI108_TXRING_LEN;
1371         TSI_WRITE(TSI108_EC_TXQ_PTRLOW, data->txdma);
1372         tsi108_init_phy(dev);
1373
1374         napi_enable(&data->napi);
1375
1376         timer_setup(&data->timer, tsi108_timed_checker, 0);
1377         mod_timer(&data->timer, jiffies + 1);
1378
1379         tsi108_restart_rx(data, dev);
1380
1381         TSI_WRITE(TSI108_EC_INTSTAT, ~0);
1382
1383         TSI_WRITE(TSI108_EC_INTMASK,
1384                              ~(TSI108_INT_TXQUEUE0 | TSI108_INT_RXERROR |
1385                                TSI108_INT_RXTHRESH | TSI108_INT_RXQUEUE0 |
1386                                TSI108_INT_RXOVERRUN | TSI108_INT_RXWAIT |
1387                                TSI108_INT_SFN | TSI108_INT_STATCARRY));
1388
1389         TSI_WRITE(TSI108_MAC_CFG1,
1390                              TSI108_MAC_CFG1_RXEN | TSI108_MAC_CFG1_TXEN);
1391         netif_start_queue(dev);
1392         return 0;
1393 }
1394
1395 static int tsi108_close(struct net_device *dev)
1396 {
1397         struct tsi108_prv_data *data = netdev_priv(dev);
1398
1399         netif_stop_queue(dev);
1400         napi_disable(&data->napi);
1401
1402         del_timer_sync(&data->timer);
1403
1404         tsi108_stop_ethernet(dev);
1405         tsi108_kill_phy(dev);
1406         TSI_WRITE(TSI108_EC_INTMASK, ~0);
1407         TSI_WRITE(TSI108_MAC_CFG1, 0);
1408
1409         /* Check for any pending TX packets, and drop them. */
1410
1411         while (!data->txfree || data->txhead != data->txtail) {
1412                 int tx = data->txtail;
1413                 struct sk_buff *skb;
1414                 skb = data->txskbs[tx];
1415                 data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN;
1416                 data->txfree++;
1417                 dev_kfree_skb(skb);
1418         }
1419
1420         free_irq(data->irq_num, dev);
1421
1422         /* Discard the RX ring. */
1423
1424         while (data->rxfree) {
1425                 int rx = data->rxtail;
1426                 struct sk_buff *skb;
1427
1428                 skb = data->rxskbs[rx];
1429                 data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN;
1430                 data->rxfree--;
1431                 dev_kfree_skb(skb);
1432         }
1433
1434         dma_free_coherent(&data->pdev->dev,
1435                             TSI108_RXRING_LEN * sizeof(rx_desc),
1436                             data->rxring, data->rxdma);
1437         dma_free_coherent(&data->pdev->dev,
1438                             TSI108_TXRING_LEN * sizeof(tx_desc),
1439                             data->txring, data->txdma);
1440
1441         return 0;
1442 }
1443
1444 static void tsi108_init_mac(struct net_device *dev)
1445 {
1446         struct tsi108_prv_data *data = netdev_priv(dev);
1447
1448         TSI_WRITE(TSI108_MAC_CFG2, TSI108_MAC_CFG2_DFLT_PREAMBLE |
1449                              TSI108_MAC_CFG2_PADCRC);
1450
1451         TSI_WRITE(TSI108_EC_TXTHRESH,
1452                              (192 << TSI108_EC_TXTHRESH_STARTFILL) |
1453                              (192 << TSI108_EC_TXTHRESH_STOPFILL));
1454
1455         TSI_WRITE(TSI108_STAT_CARRYMASK1,
1456                              ~(TSI108_STAT_CARRY1_RXBYTES |
1457                                TSI108_STAT_CARRY1_RXPKTS |
1458                                TSI108_STAT_CARRY1_RXFCS |
1459                                TSI108_STAT_CARRY1_RXMCAST |
1460                                TSI108_STAT_CARRY1_RXALIGN |
1461                                TSI108_STAT_CARRY1_RXLENGTH |
1462                                TSI108_STAT_CARRY1_RXRUNT |
1463                                TSI108_STAT_CARRY1_RXJUMBO |
1464                                TSI108_STAT_CARRY1_RXFRAG |
1465                                TSI108_STAT_CARRY1_RXJABBER |
1466                                TSI108_STAT_CARRY1_RXDROP));
1467
1468         TSI_WRITE(TSI108_STAT_CARRYMASK2,
1469                              ~(TSI108_STAT_CARRY2_TXBYTES |
1470                                TSI108_STAT_CARRY2_TXPKTS |
1471                                TSI108_STAT_CARRY2_TXEXDEF |
1472                                TSI108_STAT_CARRY2_TXEXCOL |
1473                                TSI108_STAT_CARRY2_TXTCOL |
1474                                TSI108_STAT_CARRY2_TXPAUSE));
1475
1476         TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATEN);
1477         TSI_WRITE(TSI108_MAC_CFG1, 0);
1478
1479         TSI_WRITE(TSI108_EC_RXCFG,
1480                              TSI108_EC_RXCFG_SE | TSI108_EC_RXCFG_BFE);
1481
1482         TSI_WRITE(TSI108_EC_TXQ_CFG, TSI108_EC_TXQ_CFG_DESC_INT |
1483                              TSI108_EC_TXQ_CFG_EOQ_OWN_INT |
1484                              TSI108_EC_TXQ_CFG_WSWP | (TSI108_PBM_PORT <<
1485                                                 TSI108_EC_TXQ_CFG_SFNPORT));
1486
1487         TSI_WRITE(TSI108_EC_RXQ_CFG, TSI108_EC_RXQ_CFG_DESC_INT |
1488                              TSI108_EC_RXQ_CFG_EOQ_OWN_INT |
1489                              TSI108_EC_RXQ_CFG_WSWP | (TSI108_PBM_PORT <<
1490                                                 TSI108_EC_RXQ_CFG_SFNPORT));
1491
1492         TSI_WRITE(TSI108_EC_TXQ_BUFCFG,
1493                              TSI108_EC_TXQ_BUFCFG_BURST256 |
1494                              TSI108_EC_TXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
1495                                                 TSI108_EC_TXQ_BUFCFG_SFNPORT));
1496
1497         TSI_WRITE(TSI108_EC_RXQ_BUFCFG,
1498                              TSI108_EC_RXQ_BUFCFG_BURST256 |
1499                              TSI108_EC_RXQ_BUFCFG_BSWP | (TSI108_PBM_PORT <<
1500                                                 TSI108_EC_RXQ_BUFCFG_SFNPORT));
1501
1502         TSI_WRITE(TSI108_EC_INTMASK, ~0);
1503 }
1504
1505 static int tsi108_get_link_ksettings(struct net_device *dev,
1506                                      struct ethtool_link_ksettings *cmd)
1507 {
1508         struct tsi108_prv_data *data = netdev_priv(dev);
1509         unsigned long flags;
1510
1511         spin_lock_irqsave(&data->txlock, flags);
1512         mii_ethtool_get_link_ksettings(&data->mii_if, cmd);
1513         spin_unlock_irqrestore(&data->txlock, flags);
1514
1515         return 0;
1516 }
1517
1518 static int tsi108_set_link_ksettings(struct net_device *dev,
1519                                      const struct ethtool_link_ksettings *cmd)
1520 {
1521         struct tsi108_prv_data *data = netdev_priv(dev);
1522         unsigned long flags;
1523         int rc;
1524
1525         spin_lock_irqsave(&data->txlock, flags);
1526         rc = mii_ethtool_set_link_ksettings(&data->mii_if, cmd);
1527         spin_unlock_irqrestore(&data->txlock, flags);
1528
1529         return rc;
1530 }
1531
1532 static int tsi108_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1533 {
1534         struct tsi108_prv_data *data = netdev_priv(dev);
1535         if (!netif_running(dev))
1536                 return -EINVAL;
1537         return generic_mii_ioctl(&data->mii_if, if_mii(rq), cmd, NULL);
1538 }
1539
1540 static const struct ethtool_ops tsi108_ethtool_ops = {
1541         .get_link       = ethtool_op_get_link,
1542         .get_link_ksettings     = tsi108_get_link_ksettings,
1543         .set_link_ksettings     = tsi108_set_link_ksettings,
1544 };
1545
1546 static const struct net_device_ops tsi108_netdev_ops = {
1547         .ndo_open               = tsi108_open,
1548         .ndo_stop               = tsi108_close,
1549         .ndo_start_xmit         = tsi108_send_packet,
1550         .ndo_set_rx_mode        = tsi108_set_rx_mode,
1551         .ndo_get_stats          = tsi108_get_stats,
1552         .ndo_do_ioctl           = tsi108_do_ioctl,
1553         .ndo_set_mac_address    = tsi108_set_mac,
1554         .ndo_validate_addr      = eth_validate_addr,
1555 };
1556
1557 static int
1558 tsi108_init_one(struct platform_device *pdev)
1559 {
1560         struct net_device *dev = NULL;
1561         struct tsi108_prv_data *data = NULL;
1562         hw_info *einfo;
1563         int err = 0;
1564
1565         einfo = dev_get_platdata(&pdev->dev);
1566
1567         if (NULL == einfo) {
1568                 printk(KERN_ERR "tsi-eth %d: Missing additional data!\n",
1569                        pdev->id);
1570                 return -ENODEV;
1571         }
1572
1573         /* Create an ethernet device instance */
1574
1575         dev = alloc_etherdev(sizeof(struct tsi108_prv_data));
1576         if (!dev)
1577                 return -ENOMEM;
1578
1579         printk("tsi108_eth%d: probe...\n", pdev->id);
1580         data = netdev_priv(dev);
1581         data->dev = dev;
1582         data->pdev = pdev;
1583
1584         pr_debug("tsi108_eth%d:regs:phyresgs:phy:irq_num=0x%x:0x%x:0x%x:0x%x\n",
1585                         pdev->id, einfo->regs, einfo->phyregs,
1586                         einfo->phy, einfo->irq_num);
1587
1588         data->regs = ioremap(einfo->regs, 0x400);
1589         if (NULL == data->regs) {
1590                 err = -ENOMEM;
1591                 goto regs_fail;
1592         }
1593
1594         data->phyregs = ioremap(einfo->phyregs, 0x400);
1595         if (NULL == data->phyregs) {
1596                 err = -ENOMEM;
1597                 goto phyregs_fail;
1598         }
1599 /* MII setup */
1600         data->mii_if.dev = dev;
1601         data->mii_if.mdio_read = tsi108_mdio_read;
1602         data->mii_if.mdio_write = tsi108_mdio_write;
1603         data->mii_if.phy_id = einfo->phy;
1604         data->mii_if.phy_id_mask = 0x1f;
1605         data->mii_if.reg_num_mask = 0x1f;
1606
1607         data->phy = einfo->phy;
1608         data->phy_type = einfo->phy_type;
1609         data->irq_num = einfo->irq_num;
1610         data->id = pdev->id;
1611         netif_napi_add(dev, &data->napi, tsi108_poll, 64);
1612         dev->netdev_ops = &tsi108_netdev_ops;
1613         dev->ethtool_ops = &tsi108_ethtool_ops;
1614
1615         /* Apparently, the Linux networking code won't use scatter-gather
1616          * if the hardware doesn't do checksums.  However, it's faster
1617          * to checksum in place and use SG, as (among other reasons)
1618          * the cache won't be dirtied (which then has to be flushed
1619          * before DMA).  The checksumming is done by the driver (via
1620          * a new function skb_csum_dev() in net/core/skbuff.c).
1621          */
1622
1623         dev->features = NETIF_F_HIGHDMA;
1624
1625         spin_lock_init(&data->txlock);
1626         spin_lock_init(&data->misclock);
1627
1628         tsi108_reset_ether(data);
1629         tsi108_kill_phy(dev);
1630
1631         if ((err = tsi108_get_mac(dev)) != 0) {
1632                 printk(KERN_ERR "%s: Invalid MAC address.  Please correct.\n",
1633                        dev->name);
1634                 goto register_fail;
1635         }
1636
1637         tsi108_init_mac(dev);
1638         err = register_netdev(dev);
1639         if (err) {
1640                 printk(KERN_ERR "%s: Cannot register net device, aborting.\n",
1641                                 dev->name);
1642                 goto register_fail;
1643         }
1644
1645         platform_set_drvdata(pdev, dev);
1646         printk(KERN_INFO "%s: Tsi108 Gigabit Ethernet, MAC: %pM\n",
1647                dev->name, dev->dev_addr);
1648 #ifdef DEBUG
1649         data->msg_enable = DEBUG;
1650         dump_eth_one(dev);
1651 #endif
1652
1653         return 0;
1654
1655 register_fail:
1656         iounmap(data->phyregs);
1657
1658 phyregs_fail:
1659         iounmap(data->regs);
1660
1661 regs_fail:
1662         free_netdev(dev);
1663         return err;
1664 }
1665
1666 /* There's no way to either get interrupts from the PHY when
1667  * something changes, or to have the Tsi108 automatically communicate
1668  * with the PHY to reconfigure itself.
1669  *
1670  * Thus, we have to do it using a timer.
1671  */
1672
1673 static void tsi108_timed_checker(struct timer_list *t)
1674 {
1675         struct tsi108_prv_data *data = from_timer(data, t, timer);
1676         struct net_device *dev = data->dev;
1677
1678         tsi108_check_phy(dev);
1679         tsi108_check_rxring(dev);
1680         mod_timer(&data->timer, jiffies + CHECK_PHY_INTERVAL);
1681 }
1682
1683 static int tsi108_ether_remove(struct platform_device *pdev)
1684 {
1685         struct net_device *dev = platform_get_drvdata(pdev);
1686         struct tsi108_prv_data *priv = netdev_priv(dev);
1687
1688         unregister_netdev(dev);
1689         tsi108_stop_ethernet(dev);
1690         iounmap(priv->regs);
1691         iounmap(priv->phyregs);
1692         free_netdev(dev);
1693
1694         return 0;
1695 }
1696 module_platform_driver(tsi_eth_driver);
1697
1698 MODULE_AUTHOR("Tundra Semiconductor Corporation");
1699 MODULE_DESCRIPTION("Tsi108 Gigabit Ethernet driver");
1700 MODULE_LICENSE("GPL");
1701 MODULE_ALIAS("platform:tsi-ethernet");