drivers/net/tlan.c

   1 /*******************************************************************************
   2  *
   3  *  Linux ThunderLAN Driver
   4  *
   5  *  tlan.c
   6  *  by James Banks
   7  *
   8  *  (C) 1997-1998 Caldera, Inc.
   9  *  (C) 1998 James Banks
  10  *  (C) 1999-2001 Torben Mathiasen
  11  *  (C) 2002 Samuel Chessman
  12  *
  13  *  This software may be used and distributed according to the terms
  14  *  of the GNU General Public License, incorporated herein by reference.
  15  *
  16  ** Useful (if not required) reading:
  17  *
  18  *              Texas Instruments, ThunderLAN Programmer's Guide,
  19  *                      TI Literature Number SPWU013A
  20  *                      available in PDF format from www.ti.com
  21  *              Level One, LXT901 and LXT970 Data Sheets
  22  *                      available in PDF format from www.level1.com
  23  *              National Semiconductor, DP83840A Data Sheet
  24  *                      available in PDF format from www.national.com
  25  *              Microchip Technology, 24C01A/02A/04A Data Sheet
  26  *                      available in PDF format from www.microchip.com
  27  *
  28  ******************************************************************************/
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/module.h>
  33 #include <linux/init.h>
  34 #include <linux/ioport.h>
  35 #include <linux/eisa.h>
  36 #include <linux/pci.h>
  37 #include <linux/dma-mapping.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/delay.h>
  41 #include <linux/spinlock.h>
  42 #include <linux/workqueue.h>
  43 #include <linux/mii.h>
  44
  45 #include "tlan.h"
  46
  47
  48 /* For removing EISA devices */
  49 static  struct net_device       *tlan_eisa_devices;
  50
  51 static  int             tlan_devices_installed;
  52
  53 /* Set speed, duplex and aui settings */
  54 static  int aui[MAX_TLAN_BOARDS];
  55 static  int duplex[MAX_TLAN_BOARDS];
  56 static  int speed[MAX_TLAN_BOARDS];
  57 static  int boards_found;
  58 module_param_array(aui, int, NULL, 0);
  59 module_param_array(duplex, int, NULL, 0);
  60 module_param_array(speed, int, NULL, 0);
  61 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
  62 MODULE_PARM_DESC(duplex,
  63                  "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
  64 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
  65
  66 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
  67 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
  68 MODULE_LICENSE("GPL");
  69
  70
  71 /* Define this to enable Link beat monitoring */
  72 #undef MONITOR
  73
  74 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
  75 static  int             debug;
  76 module_param(debug, int, 0);
  77 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
  78
  79 static  const char tlan_signature[] = "TLAN";
  80 static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
  81 static  int tlan_have_pci;
  82 static  int tlan_have_eisa;
  83
  84 static const char * const media[] = {
  85         "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
  86         "100BaseTx-FD", "100BaseT4", NULL
  87 };
  88
  89 static struct board {
  90         const char      *device_label;
  91         u32             flags;
  92         u16             addr_ofs;
  93 } board_info[] = {
  94         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  95         { "Compaq Netelligent 10/100 TX PCI UTP",
  96           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  97         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  98         { "Compaq NetFlex-3/P",
  99           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 100         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 101         { "Compaq Netelligent Integrated 10/100 TX UTP",
 102           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 103         { "Compaq Netelligent Dual 10/100 TX PCI UTP",
 104           TLAN_ADAPTER_NONE, 0x83 },
 105         { "Compaq Netelligent 10/100 TX Embedded UTP",
 106           TLAN_ADAPTER_NONE, 0x83 },
 107         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 108         { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
 109         { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
 110         { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 111         { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
 112         { "Compaq NetFlex-3/E",
 113           TLAN_ADAPTER_ACTIVITY_LED |   /* EISA card */
 114           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 115         { "Compaq NetFlex-3/E",
 116           TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
 117 };
 118
 119 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
 120         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
 121           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 122         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
 123           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 124         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
 125           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
 126         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
 127           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
 128         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
 129           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 130         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
 131           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
 132         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
 133           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
 134         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
 135           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
 136         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
 137           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
 138         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
 139           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
 140         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
 141           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
 142         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
 143           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
 144         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
 145           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
 146         { 0,}
 147 };
 148 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
 149
 150 static void     tlan_eisa_probe(void);
 151 static void     tlan_eisa_cleanup(void);
 152 static int      tlan_init(struct net_device *);
 153 static int      tlan_open(struct net_device *dev);
 154 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
 155 static irqreturn_t tlan_handle_interrupt(int, void *);
 156 static int      tlan_close(struct net_device *);
 157 static struct   net_device_stats *tlan_get_stats(struct net_device *);
 158 static void     tlan_set_multicast_list(struct net_device *);
 159 static int      tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 160 static int      tlan_probe1(struct pci_dev *pdev, long ioaddr,
 161                             int irq, int rev, const struct pci_device_id *ent);
 162 static void     tlan_tx_timeout(struct net_device *dev);
 163 static void     tlan_tx_timeout_work(struct work_struct *work);
 164 static int      tlan_init_one(struct pci_dev *pdev,
 165                               const struct pci_device_id *ent);
 166
 167 static u32      tlan_handle_tx_eof(struct net_device *, u16);
 168 static u32      tlan_handle_stat_overflow(struct net_device *, u16);
 169 static u32      tlan_handle_rx_eof(struct net_device *, u16);
 170 static u32      tlan_handle_dummy(struct net_device *, u16);
 171 static u32      tlan_handle_tx_eoc(struct net_device *, u16);
 172 static u32      tlan_handle_status_check(struct net_device *, u16);
 173 static u32      tlan_handle_rx_eoc(struct net_device *, u16);
 174
 175 static void     tlan_timer(unsigned long);
 176
 177 static void     tlan_reset_lists(struct net_device *);
 178 static void     tlan_free_lists(struct net_device *);
 179 static void     tlan_print_dio(u16);
 180 static void     tlan_print_list(struct tlan_list *, char *, int);
 181 static void     tlan_read_and_clear_stats(struct net_device *, int);
 182 static void     tlan_reset_adapter(struct net_device *);
 183 static void     tlan_finish_reset(struct net_device *);
 184 static void     tlan_set_mac(struct net_device *, int areg, char *mac);
 185
 186 static void     tlan_phy_print(struct net_device *);
 187 static void     tlan_phy_detect(struct net_device *);
 188 static void     tlan_phy_power_down(struct net_device *);
 189 static void     tlan_phy_power_up(struct net_device *);
 190 static void     tlan_phy_reset(struct net_device *);
 191 static void     tlan_phy_start_link(struct net_device *);
 192 static void     tlan_phy_finish_auto_neg(struct net_device *);
 193 #ifdef MONITOR
 194 static void     tlan_phy_monitor(struct net_device *);
 195 #endif
 196
 197 /*
 198   static int    tlan_phy_nop(struct net_device *);
 199   static int    tlan_phy_internal_check(struct net_device *);
 200   static int    tlan_phy_internal_service(struct net_device *);
 201   static int    tlan_phy_dp83840a_check(struct net_device *);
 202 */
 203
 204 static bool     tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 205 static void     tlan_mii_send_data(u16, u32, unsigned);
 206 static void     tlan_mii_sync(u16);
 207 static void     tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 208
 209 static void     tlan_ee_send_start(u16);
 210 static int      tlan_ee_send_byte(u16, u8, int);
 211 static void     tlan_ee_receive_byte(u16, u8 *, int);
 212 static int      tlan_ee_read_byte(struct net_device *, u8, u8 *);
 213
 214
 215 static inline void
 216 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
 217 {
 218         unsigned long addr = (unsigned long)skb;
 219         tag->buffer[9].address = addr;
 220         tag->buffer[8].address = upper_32_bits(addr);
 221 }
 222
 223 static inline struct sk_buff *
 224 tlan_get_skb(const struct tlan_list *tag)
 225 {
 226         unsigned long addr;
 227
 228         addr = tag->buffer[9].address;
 229         addr |= (tag->buffer[8].address << 16) << 16;
 230         return (struct sk_buff *) addr;
 231 }
 232
 233 static u32
 234 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
 235         NULL,
 236         tlan_handle_tx_eof,
 237         tlan_handle_stat_overflow,
 238         tlan_handle_rx_eof,
 239         tlan_handle_dummy,
 240         tlan_handle_tx_eoc,
 241         tlan_handle_status_check,
 242         tlan_handle_rx_eoc
 243 };
 244
 245 static inline void
 246 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
 247 {
 248         struct tlan_priv *priv = netdev_priv(dev);
 249         unsigned long flags = 0;
 250
 251         if (!in_irq())
 252                 spin_lock_irqsave(&priv->lock, flags);
 253         if (priv->timer.function != NULL &&
 254             priv->timer_type != TLAN_TIMER_ACTIVITY) {
 255                 if (!in_irq())
 256                         spin_unlock_irqrestore(&priv->lock, flags);
 257                 return;
 258         }
 259         priv->timer.function = tlan_timer;
 260         if (!in_irq())
 261                 spin_unlock_irqrestore(&priv->lock, flags);
 262
 263         priv->timer.data = (unsigned long) dev;
 264         priv->timer_set_at = jiffies;
 265         priv->timer_type = type;
 266         mod_timer(&priv->timer, jiffies + ticks);
 267
 268 }
 269
 270
 271 /*****************************************************************************
 272 ******************************************************************************
 273
 274 ThunderLAN driver primary functions
 275
 276 these functions are more or less common to all linux network drivers.
 277
 278 ******************************************************************************
 279 *****************************************************************************/
 280
 281
 282
 283
 284
 285 /***************************************************************
 286  *      tlan_remove_one
 287  *
 288  *      Returns:
 289  *              Nothing
 290  *      Parms:
 291  *              None
 292  *
 293  *      Goes through the TLanDevices list and frees the device
 294  *      structs and memory associated with each device (lists
 295  *      and buffers).  It also ureserves the IO port regions
 296  *      associated with this device.
 297  *
 298  **************************************************************/
 299
 300
 301 static void __devexit tlan_remove_one(struct pci_dev *pdev)
 302 {
 303         struct net_device *dev = pci_get_drvdata(pdev);
 304         struct tlan_priv        *priv = netdev_priv(dev);
 305
 306         unregister_netdev(dev);
 307
 308         if (priv->dma_storage) {
 309                 pci_free_consistent(priv->pci_dev,
 310                                     priv->dma_size, priv->dma_storage,
 311                                     priv->dma_storage_dma);
 312         }
 313
 314 #ifdef CONFIG_PCI
 315         pci_release_regions(pdev);
 316 #endif
 317
 318         free_netdev(dev);
 319
 320         pci_set_drvdata(pdev, NULL);
 321 }
 322
 323 static void tlan_start(struct net_device *dev)
 324 {
 325         tlan_reset_lists(dev);
 326         /* NOTE: It might not be necessary to read the stats before a
 327            reset if you don't care what the values are.
 328         */
 329         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 330         tlan_reset_adapter(dev);
 331         netif_wake_queue(dev);
 332 }
 333
 334 static void tlan_stop(struct net_device *dev)
 335 {
 336         struct tlan_priv *priv = netdev_priv(dev);
 337
 338         tlan_read_and_clear_stats(dev, TLAN_RECORD);
 339         outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 340         /* Reset and power down phy */
 341         tlan_reset_adapter(dev);
 342         if (priv->timer.function != NULL) {
 343                 del_timer_sync(&priv->timer);
 344                 priv->timer.function = NULL;
 345         }
 346 }
 347
 348 #ifdef CONFIG_PM
 349
 350 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
 351 {
 352         struct net_device *dev = pci_get_drvdata(pdev);
 353
 354         if (netif_running(dev))
 355                 tlan_stop(dev);
 356
 357         netif_device_detach(dev);
 358         pci_save_state(pdev);
 359         pci_disable_device(pdev);
 360         pci_wake_from_d3(pdev, false);
 361         pci_set_power_state(pdev, PCI_D3hot);
 362
 363         return 0;
 364 }
 365
 366 static int tlan_resume(struct pci_dev *pdev)
 367 {
 368         struct net_device *dev = pci_get_drvdata(pdev);
 369
 370         pci_set_power_state(pdev, PCI_D0);
 371         pci_restore_state(pdev);
 372         pci_enable_wake(pdev, 0, 0);
 373         netif_device_attach(dev);
 374
 375         if (netif_running(dev))
 376                 tlan_start(dev);
 377
 378         return 0;
 379 }
 380
 381 #else /* CONFIG_PM */
 382
 383 #define tlan_suspend   NULL
 384 #define tlan_resume    NULL
 385
 386 #endif /* CONFIG_PM */
 387
 388
 389 static struct pci_driver tlan_driver = {
 390         .name           = "tlan",
 391         .id_table       = tlan_pci_tbl,
 392         .probe          = tlan_init_one,
 393         .remove         = __devexit_p(tlan_remove_one),
 394         .suspend        = tlan_suspend,
 395         .resume         = tlan_resume,
 396 };
 397
 398 static int __init tlan_probe(void)
 399 {
 400         int rc = -ENODEV;
 401
 402         pr_info("%s", tlan_banner);
 403
 404         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 405
 406         /* Use new style PCI probing. Now the kernel will
 407            do most of this for us */
 408         rc = pci_register_driver(&tlan_driver);
 409
 410         if (rc != 0) {
 411                 pr_err("Could not register pci driver\n");
 412                 goto err_out_pci_free;
 413         }
 414
 415         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 416         tlan_eisa_probe();
 417
 418         pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 419                 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 420                 tlan_have_pci, tlan_have_eisa);
 421
 422         if (tlan_devices_installed == 0) {
 423                 rc = -ENODEV;
 424                 goto  err_out_pci_unreg;
 425         }
 426         return 0;
 427
 428 err_out_pci_unreg:
 429         pci_unregister_driver(&tlan_driver);
 430 err_out_pci_free:
 431         return rc;
 432 }
 433
 434
 435 static int __devinit tlan_init_one(struct pci_dev *pdev,
 436                                    const struct pci_device_id *ent)
 437 {
 438         return tlan_probe1(pdev, -1, -1, 0, ent);
 439 }
 440
 441
 442 /*
 443 ***************************************************************
 444 *       tlan_probe1
 445 *
 446 *       Returns:
 447 *               0 on success, error code on error
 448 *       Parms:
 449 *               none
 450 *
 451 *       The name is lower case to fit in with all the rest of
 452 *       the netcard_probe names.  This function looks for
 453 *       another TLan based adapter, setting it up with the
 454 *       allocated device struct if one is found.
 455 *       tlan_probe has been ported to the new net API and
 456 *       now allocates its own device structure. This function
 457 *       is also used by modules.
 458 *
 459 **************************************************************/
 460
 461 static int __devinit tlan_probe1(struct pci_dev *pdev,
 462                                  long ioaddr, int irq, int rev,
 463                                  const struct pci_device_id *ent)
 464 {
 465
 466         struct net_device  *dev;
 467         struct tlan_priv  *priv;
 468         u16                device_id;
 469         int                reg, rc = -ENODEV;
 470
 471 #ifdef CONFIG_PCI
 472         if (pdev) {
 473                 rc = pci_enable_device(pdev);
 474                 if (rc)
 475                         return rc;
 476
 477                 rc = pci_request_regions(pdev, tlan_signature);
 478                 if (rc) {
 479                         pr_err("Could not reserve IO regions\n");
 480                         goto err_out;
 481                 }
 482         }
 483 #endif  /*  CONFIG_PCI  */
 484
 485         dev = alloc_etherdev(sizeof(struct tlan_priv));
 486         if (dev == NULL) {
 487                 pr_err("Could not allocate memory for device\n");
 488                 rc = -ENOMEM;
 489                 goto err_out_regions;
 490         }
 491         SET_NETDEV_DEV(dev, &pdev->dev);
 492
 493         priv = netdev_priv(dev);
 494
 495         priv->pci_dev = pdev;
 496         priv->dev = dev;
 497
 498         /* Is this a PCI device? */
 499         if (pdev) {
 500                 u32                pci_io_base = 0;
 501
 502                 priv->adapter = &board_info[ent->driver_data];
 503
 504                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 505                 if (rc) {
 506                         pr_err("No suitable PCI mapping available\n");
 507                         goto err_out_free_dev;
 508                 }
 509
 510                 for (reg = 0; reg <= 5; reg++) {
 511                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 512                                 pci_io_base = pci_resource_start(pdev, reg);
 513                                 TLAN_DBG(TLAN_DEBUG_GNRL,
 514                                          "IO mapping is available at %x.\n",
 515                                          pci_io_base);
 516                                 break;
 517                         }
 518                 }
 519                 if (!pci_io_base) {
 520                         pr_err("No IO mappings available\n");
 521                         rc = -EIO;
 522                         goto err_out_free_dev;
 523                 }
 524
 525                 dev->base_addr = pci_io_base;
 526                 dev->irq = pdev->irq;
 527                 priv->adapter_rev = pdev->revision;
 528                 pci_set_master(pdev);
 529                 pci_set_drvdata(pdev, dev);
 530
 531         } else  {     /* EISA card */
 532                 /* This is a hack. We need to know which board structure
 533                  * is suited for this adapter */
 534                 device_id = inw(ioaddr + EISA_ID2);
 535                 priv->is_eisa = 1;
 536                 if (device_id == 0x20F1) {
 537                         priv->adapter = &board_info[13]; /* NetFlex-3/E */
 538                         priv->adapter_rev = 23;         /* TLAN 2.3 */
 539                 } else {
 540                         priv->adapter = &board_info[14];
 541                         priv->adapter_rev = 10;         /* TLAN 1.0 */
 542                 }
 543                 dev->base_addr = ioaddr;
 544                 dev->irq = irq;
 545         }
 546
 547         /* Kernel parameters */
 548         if (dev->mem_start) {
 549                 priv->aui    = dev->mem_start & 0x01;
 550                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
 551                         : (dev->mem_start & 0x06) >> 1;
 552                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
 553                         : (dev->mem_start & 0x18) >> 3;
 554
 555                 if (priv->speed == 0x1)
 556                         priv->speed = TLAN_SPEED_10;
 557                 else if (priv->speed == 0x2)
 558                         priv->speed = TLAN_SPEED_100;
 559
 560                 debug = priv->debug = dev->mem_end;
 561         } else {
 562                 priv->aui    = aui[boards_found];
 563                 priv->speed  = speed[boards_found];
 564                 priv->duplex = duplex[boards_found];
 565                 priv->debug = debug;
 566         }
 567
 568         /* This will be used when we get an adapter error from
 569          * within our irq handler */
 570         INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
 571
 572         spin_lock_init(&priv->lock);
 573
 574         rc = tlan_init(dev);
 575         if (rc) {
 576                 pr_err("Could not set up device\n");
 577                 goto err_out_free_dev;
 578         }
 579
 580         rc = register_netdev(dev);
 581         if (rc) {
 582                 pr_err("Could not register device\n");
 583                 goto err_out_uninit;
 584         }
 585
 586
 587         tlan_devices_installed++;
 588         boards_found++;
 589
 590         /* pdev is NULL if this is an EISA device */
 591         if (pdev)
 592                 tlan_have_pci++;
 593         else {
 594                 priv->next_device = tlan_eisa_devices;
 595                 tlan_eisa_devices = dev;
 596                 tlan_have_eisa++;
 597         }
 598
 599         netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
 600                     (int)dev->irq,
 601                     (int)dev->base_addr,
 602                     priv->adapter->device_label,
 603                     priv->adapter_rev);
 604         return 0;
 605
 606 err_out_uninit:
 607         pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
 608                             priv->dma_storage_dma);
 609 err_out_free_dev:
 610         free_netdev(dev);
 611 err_out_regions:
 612 #ifdef CONFIG_PCI
 613         if (pdev)
 614                 pci_release_regions(pdev);
 615 #endif
 616 err_out:
 617         if (pdev)
 618                 pci_disable_device(pdev);
 619         return rc;
 620 }
 621
 622
 623 static void tlan_eisa_cleanup(void)
 624 {
 625         struct net_device *dev;
 626         struct tlan_priv *priv;
 627
 628         while (tlan_have_eisa) {
 629                 dev = tlan_eisa_devices;
 630                 priv = netdev_priv(dev);
 631                 if (priv->dma_storage) {
 632                         pci_free_consistent(priv->pci_dev, priv->dma_size,
 633                                             priv->dma_storage,
 634                                             priv->dma_storage_dma);
 635                 }
 636                 release_region(dev->base_addr, 0x10);
 637                 unregister_netdev(dev);
 638                 tlan_eisa_devices = priv->next_device;
 639                 free_netdev(dev);
 640                 tlan_have_eisa--;
 641         }
 642 }
 643
 644
 645 static void __exit tlan_exit(void)
 646 {
 647         pci_unregister_driver(&tlan_driver);
 648
 649         if (tlan_have_eisa)
 650                 tlan_eisa_cleanup();
 651
 652 }
 653
 654
 655 /* Module loading/unloading */
 656 module_init(tlan_probe);
 657 module_exit(tlan_exit);
 658
 659
 660
 661 /**************************************************************
 662  *      tlan_eisa_probe
 663  *
 664  *      Returns: 0 on success, 1 otherwise
 665  *
 666  *      Parms:   None
 667  *
 668  *
 669  *      This functions probes for EISA devices and calls
 670  *      TLan_probe1 when one is found.
 671  *
 672  *************************************************************/
 673
 674 static void  __init tlan_eisa_probe(void)
 675 {
 676         long    ioaddr;
 677         int     rc = -ENODEV;
 678         int     irq;
 679         u16     device_id;
 680
 681         if (!EISA_bus) {
 682                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 683                 return;
 684         }
 685
 686         /* Loop through all slots of the EISA bus */
 687         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 688
 689                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 690                          (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
 691                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 692                          (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
 693
 694
 695                 TLAN_DBG(TLAN_DEBUG_PROBE,
 696                          "Probing for EISA adapter at IO: 0x%4x : ",
 697                          (int) ioaddr);
 698                 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
 699                         goto out;
 700
 701                 if (inw(ioaddr + EISA_ID) != 0x110E) {
 702                         release_region(ioaddr, 0x10);
 703                         goto out;
 704                 }
 705
 706                 device_id = inw(ioaddr + EISA_ID2);
 707                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
 708                         release_region(ioaddr, 0x10);
 709                         goto out;
 710                 }
 711
 712                 /* check if adapter is enabled */
 713                 if (inb(ioaddr + EISA_CR) != 0x1) {
 714                         release_region(ioaddr, 0x10);
 715                         goto out2;
 716                 }
 717
 718                 if (debug == 0x10)
 719                         pr_info("Found one\n");
 720
 721
 722                 /* Get irq from board */
 723                 switch (inb(ioaddr + 0xcc0)) {
 724                 case(0x10):
 725                         irq = 5;
 726                         break;
 727                 case(0x20):
 728                         irq = 9;
 729                         break;
 730                 case(0x40):
 731                         irq = 10;
 732                         break;
 733                 case(0x80):
 734                         irq = 11;
 735                         break;
 736                 default:
 737                         goto out;
 738                 }
 739
 740
 741                 /* Setup the newly found eisa adapter */
 742                 rc = tlan_probe1(NULL, ioaddr, irq,
 743                                  12, NULL);
 744                 continue;
 745
 746 out:
 747                 if (debug == 0x10)
 748                         pr_info("None found\n");
 749                 continue;
 750
 751 out2:
 752                 if (debug == 0x10)
 753                         pr_info("Card found but it is not enabled, skipping\n");
 754                 continue;
 755
 756         }
 757
 758 }
 759
 760 #ifdef CONFIG_NET_POLL_CONTROLLER
 761 static void tlan_poll(struct net_device *dev)
 762 {
 763         disable_irq(dev->irq);
 764         tlan_handle_interrupt(dev->irq, dev);
 765         enable_irq(dev->irq);
 766 }
 767 #endif
 768
 769 static const struct net_device_ops tlan_netdev_ops = {
 770         .ndo_open               = tlan_open,
 771         .ndo_stop               = tlan_close,
 772         .ndo_start_xmit         = tlan_start_tx,
 773         .ndo_tx_timeout         = tlan_tx_timeout,
 774         .ndo_get_stats          = tlan_get_stats,
 775         .ndo_set_multicast_list = tlan_set_multicast_list,
 776         .ndo_do_ioctl           = tlan_ioctl,
 777         .ndo_change_mtu         = eth_change_mtu,
 778         .ndo_set_mac_address    = eth_mac_addr,
 779         .ndo_validate_addr      = eth_validate_addr,
 780 #ifdef CONFIG_NET_POLL_CONTROLLER
 781         .ndo_poll_controller     = tlan_poll,
 782 #endif
 783 };
 784
 785
 786
 787 /***************************************************************
 788  *      tlan_init
 789  *
 790  *      Returns:
 791  *              0 on success, error code otherwise.
 792  *      Parms:
 793  *              dev     The structure of the device to be
 794  *                      init'ed.
 795  *
 796  *      This function completes the initialization of the
 797  *      device structure and driver.  It reserves the IO
 798  *      addresses, allocates memory for the lists and bounce
 799  *      buffers, retrieves the MAC address from the eeprom
 800  *      and assignes the device's methods.
 801  *
 802  **************************************************************/
 803
 804 static int tlan_init(struct net_device *dev)
 805 {
 806         int             dma_size;
 807         int             err;
 808         int             i;
 809         struct tlan_priv        *priv;
 810
 811         priv = netdev_priv(dev);
 812
 813         dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
 814                 * (sizeof(struct tlan_list));
 815         priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
 816                                                  dma_size,
 817                                                  &priv->dma_storage_dma);
 818         priv->dma_size = dma_size;
 819
 820         if (priv->dma_storage == NULL) {
 821                 pr_err("Could not allocate lists and buffers for %s\n",
 822                        dev->name);
 823                 return -ENOMEM;
 824         }
 825         memset(priv->dma_storage, 0, dma_size);
 826         priv->rx_list = (struct tlan_list *)
 827                 ALIGN((unsigned long)priv->dma_storage, 8);
 828         priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
 829         priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
 830         priv->tx_list_dma =
 831                 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
 832
 833         err = 0;
 834         for (i = 0;  i < 6 ; i++)
 835                 err |= tlan_ee_read_byte(dev,
 836                                          (u8) priv->adapter->addr_ofs + i,
 837                                          (u8 *) &dev->dev_addr[i]);
 838         if (err) {
 839                 pr_err("%s: Error reading MAC from eeprom: %d\n",
 840                        dev->name, err);
 841         }
 842         dev->addr_len = 6;
 843
 844         netif_carrier_off(dev);
 845
 846         /* Device methods */
 847         dev->netdev_ops = &tlan_netdev_ops;
 848         dev->watchdog_timeo = TX_TIMEOUT;
 849
 850         return 0;
 851
 852 }
 853
 854
 855
 856
 857 /***************************************************************
 858  *      tlan_open
 859  *
 860  *      Returns:
 861  *              0 on success, error code otherwise.
 862  *      Parms:
 863  *              dev     Structure of device to be opened.
 864  *
 865  *      This routine puts the driver and TLAN adapter in a
 866  *      state where it is ready to send and receive packets.
 867  *      It allocates the IRQ, resets and brings the adapter
 868  *      out of reset, and allows interrupts.  It also delays
 869  *      the startup for autonegotiation or sends a Rx GO
 870  *      command to the adapter, as appropriate.
 871  *
 872  **************************************************************/
 873
 874 static int tlan_open(struct net_device *dev)
 875 {
 876         struct tlan_priv        *priv = netdev_priv(dev);
 877         int             err;
 878
 879         priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
 880         err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
 881                           dev->name, dev);
 882
 883         if (err) {
 884                 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
 885                            dev->irq);
 886                 return err;
 887         }
 888
 889         init_timer(&priv->timer);
 890
 891         tlan_start(dev);
 892
 893         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
 894                  dev->name, priv->tlan_rev);
 895
 896         return 0;
 897
 898 }
 899
 900
 901
 902 /**************************************************************
 903  *      tlan_ioctl
 904  *
 905  *      Returns:
 906  *              0 on success, error code otherwise
 907  *      Params:
 908  *              dev     structure of device to receive ioctl.
 909  *
 910  *              rq      ifreq structure to hold userspace data.
 911  *
 912  *              cmd     ioctl command.
 913  *
 914  *
 915  *************************************************************/
 916
 917 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 918 {
 919         struct tlan_priv *priv = netdev_priv(dev);
 920         struct mii_ioctl_data *data = if_mii(rq);
 921         u32 phy   = priv->phy[priv->phy_num];
 922
 923         if (!priv->phy_online)
 924                 return -EAGAIN;
 925
 926         switch (cmd) {
 927         case SIOCGMIIPHY:               /* get address of MII PHY in use. */
 928                 data->phy_id = phy;
 929
 930
 931         case SIOCGMIIREG:               /* read MII PHY register. */
 932                 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
 933                                   data->reg_num & 0x1f, &data->val_out);
 934                 return 0;
 935
 936
 937         case SIOCSMIIREG:               /* write MII PHY register. */
 938                 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
 939                                    data->reg_num & 0x1f, data->val_in);
 940                 return 0;
 941         default:
 942                 return -EOPNOTSUPP;
 943         }
 944 }
 945
 946
 947 /***************************************************************
 948  *      tlan_tx_timeout
 949  *
 950  *      Returns: nothing
 951  *
 952  *      Params:
 953  *              dev     structure of device which timed out
 954  *                      during transmit.
 955  *
 956  **************************************************************/
 957
 958 static void tlan_tx_timeout(struct net_device *dev)
 959 {
 960
 961         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
 962
 963         /* Ok so we timed out, lets see what we can do about it...*/
 964         tlan_free_lists(dev);
 965         tlan_reset_lists(dev);
 966         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 967         tlan_reset_adapter(dev);
 968         dev->trans_start = jiffies; /* prevent tx timeout */
 969         netif_wake_queue(dev);
 970
 971 }
 972
 973
 974 /***************************************************************
 975  *      tlan_tx_timeout_work
 976  *
 977  *      Returns: nothing
 978  *
 979  *      Params:
 980  *              work    work item of device which timed out
 981  *
 982  **************************************************************/
 983
 984 static void tlan_tx_timeout_work(struct work_struct *work)
 985 {
 986         struct tlan_priv        *priv =
 987                 container_of(work, struct tlan_priv, tlan_tqueue);
 988
 989         tlan_tx_timeout(priv->dev);
 990 }
 991
 992
 993
 994 /***************************************************************
 995  *      tlan_start_tx
 996  *
 997  *      Returns:
 998  *              0 on success, non-zero on failure.
 999  *      Parms:
1000  *              skb     A pointer to the sk_buff containing the
1001  *                      frame to be sent.
1002  *              dev     The device to send the data on.
1003  *
1004  *      This function adds a frame to the Tx list to be sent
1005  *      ASAP.  First it verifies that the adapter is ready and
1006  *      there is room in the queue.  Then it sets up the next
1007  *      available list, copies the frame to the corresponding
1008  *      buffer.  If the adapter Tx channel is idle, it gives
1009  *      the adapter a Tx Go command on the list, otherwise it
1010  *      sets the forward address of the previous list to point
1011  *      to this one.  Then it frees the sk_buff.
1012  *
1013  **************************************************************/
1014
1015 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1016 {
1017         struct tlan_priv *priv = netdev_priv(dev);
1018         dma_addr_t      tail_list_phys;
1019         struct tlan_list        *tail_list;
1020         unsigned long   flags;
1021         unsigned int    txlen;
1022
1023         if (!priv->phy_online) {
1024                 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1025                          dev->name);
1026                 dev_kfree_skb_any(skb);
1027                 return NETDEV_TX_OK;
1028         }
1029
1030         if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1031                 return NETDEV_TX_OK;
1032         txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1033
1034         tail_list = priv->tx_list + priv->tx_tail;
1035         tail_list_phys =
1036                 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1037
1038         if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1039                 TLAN_DBG(TLAN_DEBUG_TX,
1040                          "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1041                          dev->name, priv->tx_head, priv->tx_tail);
1042                 netif_stop_queue(dev);
1043                 priv->tx_busy_count++;
1044                 return NETDEV_TX_BUSY;
1045         }
1046
1047         tail_list->forward = 0;
1048
1049         tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1050                                                       skb->data, txlen,
1051                                                       PCI_DMA_TODEVICE);
1052         tlan_store_skb(tail_list, skb);
1053
1054         tail_list->frame_size = (u16) txlen;
1055         tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1056         tail_list->buffer[1].count = 0;
1057         tail_list->buffer[1].address = 0;
1058
1059         spin_lock_irqsave(&priv->lock, flags);
1060         tail_list->c_stat = TLAN_CSTAT_READY;
1061         if (!priv->tx_in_progress) {
1062                 priv->tx_in_progress = 1;
1063                 TLAN_DBG(TLAN_DEBUG_TX,
1064                          "TRANSMIT:  Starting TX on buffer %d\n",
1065                          priv->tx_tail);
1066                 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1067                 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1068         } else {
1069                 TLAN_DBG(TLAN_DEBUG_TX,
1070                          "TRANSMIT:  Adding buffer %d to TX channel\n",
1071                          priv->tx_tail);
1072                 if (priv->tx_tail == 0) {
1073                         (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1074                                 = tail_list_phys;
1075                 } else {
1076                         (priv->tx_list + (priv->tx_tail - 1))->forward
1077                                 = tail_list_phys;
1078                 }
1079         }
1080         spin_unlock_irqrestore(&priv->lock, flags);
1081
1082         CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1083
1084         return NETDEV_TX_OK;
1085
1086 }
1087
1088
1089
1090
1091 /***************************************************************
1092  *      tlan_handle_interrupt
1093  *
1094  *      Returns:
1095  *              Nothing
1096  *      Parms:
1097  *              irq     The line on which the interrupt
1098  *                      occurred.
1099  *              dev_id  A pointer to the device assigned to
1100  *                      this irq line.
1101  *
1102  *      This function handles an interrupt generated by its
1103  *      assigned TLAN adapter.  The function deactivates
1104  *      interrupts on its adapter, records the type of
1105  *      interrupt, executes the appropriate subhandler, and
1106  *      acknowdges the interrupt to the adapter (thus
1107  *      re-enabling adapter interrupts.
1108  *
1109  **************************************************************/
1110
1111 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1112 {
1113         struct net_device       *dev = dev_id;
1114         struct tlan_priv *priv = netdev_priv(dev);
1115         u16             host_int;
1116         u16             type;
1117
1118         spin_lock(&priv->lock);
1119
1120         host_int = inw(dev->base_addr + TLAN_HOST_INT);
1121         type = (host_int & TLAN_HI_IT_MASK) >> 2;
1122         if (type) {
1123                 u32     ack;
1124                 u32     host_cmd;
1125
1126                 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1127                 ack = tlan_int_vector[type](dev, host_int);
1128
1129                 if (ack) {
1130                         host_cmd = TLAN_HC_ACK | ack | (type << 18);
1131                         outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1132                 }
1133         }
1134
1135         spin_unlock(&priv->lock);
1136
1137         return IRQ_RETVAL(type);
1138 }
1139
1140
1141
1142
1143 /***************************************************************
1144  *      tlan_close
1145  *
1146  *      Returns:
1147  *              An error code.
1148  *      Parms:
1149  *              dev     The device structure of the device to
1150  *                      close.
1151  *
1152  *      This function shuts down the adapter.  It records any
1153  *      stats, puts the adapter into reset state, deactivates
1154  *      its time as needed, and frees the irq it is using.
1155  *
1156  **************************************************************/
1157
1158 static int tlan_close(struct net_device *dev)
1159 {
1160         struct tlan_priv *priv = netdev_priv(dev);
1161
1162         priv->neg_be_verbose = 0;
1163         tlan_stop(dev);
1164
1165         free_irq(dev->irq, dev);
1166         tlan_free_lists(dev);
1167         TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1168
1169         return 0;
1170
1171 }
1172
1173
1174
1175
1176 /***************************************************************
1177  *      tlan_get_stats
1178  *
1179  *      Returns:
1180  *              A pointer to the device's statistics structure.
1181  *      Parms:
1182  *              dev     The device structure to return the
1183  *                      stats for.
1184  *
1185  *      This function updates the devices statistics by reading
1186  *      the TLAN chip's onboard registers.  Then it returns the
1187  *      address of the statistics structure.
1188  *
1189  **************************************************************/
1190
1191 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1192 {
1193         struct tlan_priv        *priv = netdev_priv(dev);
1194         int i;
1195
1196         /* Should only read stats if open ? */
1197         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1198
1199         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1200                  priv->rx_eoc_count);
1201         TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1202                  priv->tx_busy_count);
1203         if (debug & TLAN_DEBUG_GNRL) {
1204                 tlan_print_dio(dev->base_addr);
1205                 tlan_phy_print(dev);
1206         }
1207         if (debug & TLAN_DEBUG_LIST) {
1208                 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1209                         tlan_print_list(priv->rx_list + i, "RX", i);
1210                 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1211                         tlan_print_list(priv->tx_list + i, "TX", i);
1212         }
1213
1214         return &dev->stats;
1215
1216 }
1217
1218
1219
1220
1221 /***************************************************************
1222  *      tlan_set_multicast_list
1223  *
1224  *      Returns:
1225  *              Nothing
1226  *      Parms:
1227  *              dev     The device structure to set the
1228  *                      multicast list for.
1229  *
1230  *      This function sets the TLAN adaptor to various receive
1231  *      modes.  If the IFF_PROMISC flag is set, promiscuous
1232  *      mode is acitviated.  Otherwise, promiscuous mode is
1233  *      turned off.  If the IFF_ALLMULTI flag is set, then
1234  *      the hash table is set to receive all group addresses.
1235  *      Otherwise, the first three multicast addresses are
1236  *      stored in AREG_1-3, and the rest are selected via the
1237  *      hash table, as necessary.
1238  *
1239  **************************************************************/
1240
1241 static void tlan_set_multicast_list(struct net_device *dev)
1242 {
1243         struct netdev_hw_addr *ha;
1244         u32                     hash1 = 0;
1245         u32                     hash2 = 0;
1246         int                     i;
1247         u32                     offset;
1248         u8                      tmp;
1249
1250         if (dev->flags & IFF_PROMISC) {
1251                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1252                 tlan_dio_write8(dev->base_addr,
1253                                 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1254         } else {
1255                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1256                 tlan_dio_write8(dev->base_addr,
1257                                 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1258                 if (dev->flags & IFF_ALLMULTI) {
1259                         for (i = 0; i < 3; i++)
1260                                 tlan_set_mac(dev, i + 1, NULL);
1261                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1262                                          0xffffffff);
1263                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1264                                          0xffffffff);
1265                 } else {
1266                         i = 0;
1267                         netdev_for_each_mc_addr(ha, dev) {
1268                                 if (i < 3) {
1269                                         tlan_set_mac(dev, i + 1,
1270                                                      (char *) &ha->addr);
1271                                 } else {
1272                                         offset =
1273                                                 tlan_hash_func((u8 *)&ha->addr);
1274                                         if (offset < 32)
1275                                                 hash1 |= (1 << offset);
1276                                         else
1277                                                 hash2 |= (1 << (offset - 32));
1278                                 }
1279                                 i++;
1280                         }
1281                         for ( ; i < 3; i++)
1282                                 tlan_set_mac(dev, i + 1, NULL);
1283                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1284                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1285                 }
1286         }
1287
1288 }
1289
1290
1291
1292 /*****************************************************************************
1293 ******************************************************************************
1294
1295 ThunderLAN driver interrupt vectors and table
1296
1297 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1298 Programmer's Guide" for more informations on handling interrupts
1299 generated by TLAN based adapters.
1300
1301 ******************************************************************************
1302 *****************************************************************************/
1303
1304
1305
1306
1307 /***************************************************************
1308  *      tlan_handle_tx_eof
1309  *
1310  *      Returns:
1311  *              1
1312  *      Parms:
1313  *              dev             Device assigned the IRQ that was
1314  *                              raised.
1315  *              host_int        The contents of the HOST_INT
1316  *                              port.
1317  *
1318  *      This function handles Tx EOF interrupts which are raised
1319  *      by the adapter when it has completed sending the
1320  *      contents of a buffer.  If detemines which list/buffer
1321  *      was completed and resets it.  If the buffer was the last
1322  *      in the channel (EOC), then the function checks to see if
1323  *      another buffer is ready to send, and if so, sends a Tx
1324  *      Go command.  Finally, the driver activates/continues the
1325  *      activity LED.
1326  *
1327  **************************************************************/
1328
1329 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1330 {
1331         struct tlan_priv        *priv = netdev_priv(dev);
1332         int             eoc = 0;
1333         struct tlan_list        *head_list;
1334         dma_addr_t      head_list_phys;
1335         u32             ack = 0;
1336         u16             tmp_c_stat;
1337
1338         TLAN_DBG(TLAN_DEBUG_TX,
1339                  "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1340                  priv->tx_head, priv->tx_tail);
1341         head_list = priv->tx_list + priv->tx_head;
1342
1343         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1344                && (ack < 255)) {
1345                 struct sk_buff *skb = tlan_get_skb(head_list);
1346
1347                 ack++;
1348                 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1349                                  max(skb->len,
1350                                      (unsigned int)TLAN_MIN_FRAME_SIZE),
1351                                  PCI_DMA_TODEVICE);
1352                 dev_kfree_skb_any(skb);
1353                 head_list->buffer[8].address = 0;
1354                 head_list->buffer[9].address = 0;
1355
1356                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1357                         eoc = 1;
1358
1359                 dev->stats.tx_bytes += head_list->frame_size;
1360
1361                 head_list->c_stat = TLAN_CSTAT_UNUSED;
1362                 netif_start_queue(dev);
1363                 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1364                 head_list = priv->tx_list + priv->tx_head;
1365         }
1366
1367         if (!ack)
1368                 netdev_info(dev,
1369                             "Received interrupt for uncompleted TX frame\n");
1370
1371         if (eoc) {
1372                 TLAN_DBG(TLAN_DEBUG_TX,
1373                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1374                          priv->tx_head, priv->tx_tail);
1375                 head_list = priv->tx_list + priv->tx_head;
1376                 head_list_phys = priv->tx_list_dma
1377                         + sizeof(struct tlan_list)*priv->tx_head;
1378                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1379                     == TLAN_CSTAT_READY) {
1380                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1381                         ack |= TLAN_HC_GO;
1382                 } else {
1383                         priv->tx_in_progress = 0;
1384                 }
1385         }
1386
1387         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1388                 tlan_dio_write8(dev->base_addr,
1389                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1390                 if (priv->timer.function == NULL) {
1391                         priv->timer.function = tlan_timer;
1392                         priv->timer.data = (unsigned long) dev;
1393                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1394                         priv->timer_set_at = jiffies;
1395                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1396                         add_timer(&priv->timer);
1397                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1398                         priv->timer_set_at = jiffies;
1399                 }
1400         }
1401
1402         return ack;
1403
1404 }
1405
1406
1407
1408
1409 /***************************************************************
1410  *      TLan_HandleStatOverflow
1411  *
1412  *      Returns:
1413  *              1
1414  *      Parms:
1415  *              dev             Device assigned the IRQ that was
1416  *                              raised.
1417  *              host_int        The contents of the HOST_INT
1418  *                              port.
1419  *
1420  *      This function handles the Statistics Overflow interrupt
1421  *      which means that one or more of the TLAN statistics
1422  *      registers has reached 1/2 capacity and needs to be read.
1423  *
1424  **************************************************************/
1425
1426 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1427 {
1428         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1429
1430         return 1;
1431
1432 }
1433
1434
1435
1436
1437 /***************************************************************
1438  *      TLan_HandleRxEOF
1439  *
1440  *      Returns:
1441  *              1
1442  *      Parms:
1443  *              dev             Device assigned the IRQ that was
1444  *                              raised.
1445  *              host_int        The contents of the HOST_INT
1446  *                              port.
1447  *
1448  *      This function handles the Rx EOF interrupt which
1449  *      indicates a frame has been received by the adapter from
1450  *      the net and the frame has been transferred to memory.
1451  *      The function determines the bounce buffer the frame has
1452  *      been loaded into, creates a new sk_buff big enough to
1453  *      hold the frame, and sends it to protocol stack.  It
1454  *      then resets the used buffer and appends it to the end
1455  *      of the list.  If the frame was the last in the Rx
1456  *      channel (EOC), the function restarts the receive channel
1457  *      by sending an Rx Go command to the adapter.  Then it
1458  *      activates/continues the activity LED.
1459  *
1460  **************************************************************/
1461
1462 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1463 {
1464         struct tlan_priv        *priv = netdev_priv(dev);
1465         u32             ack = 0;
1466         int             eoc = 0;
1467         struct tlan_list        *head_list;
1468         struct sk_buff  *skb;
1469         struct tlan_list        *tail_list;
1470         u16             tmp_c_stat;
1471         dma_addr_t      head_list_phys;
1472
1473         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1474                  priv->rx_head, priv->rx_tail);
1475         head_list = priv->rx_list + priv->rx_head;
1476         head_list_phys =
1477                 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1478
1479         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1480                && (ack < 255)) {
1481                 dma_addr_t frame_dma = head_list->buffer[0].address;
1482                 u32 frame_size = head_list->frame_size;
1483                 struct sk_buff *new_skb;
1484
1485                 ack++;
1486                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1487                         eoc = 1;
1488
1489                 new_skb = netdev_alloc_skb_ip_align(dev,
1490                                                     TLAN_MAX_FRAME_SIZE + 5);
1491                 if (!new_skb)
1492                         goto drop_and_reuse;
1493
1494                 skb = tlan_get_skb(head_list);
1495                 pci_unmap_single(priv->pci_dev, frame_dma,
1496                                  TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1497                 skb_put(skb, frame_size);
1498
1499                 dev->stats.rx_bytes += frame_size;
1500
1501                 skb->protocol = eth_type_trans(skb, dev);
1502                 netif_rx(skb);
1503
1504                 head_list->buffer[0].address =
1505                         pci_map_single(priv->pci_dev, new_skb->data,
1506                                        TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1507
1508                 tlan_store_skb(head_list, new_skb);
1509 drop_and_reuse:
1510                 head_list->forward = 0;
1511                 head_list->c_stat = 0;
1512                 tail_list = priv->rx_list + priv->rx_tail;
1513                 tail_list->forward = head_list_phys;
1514
1515                 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1516                 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1517                 head_list = priv->rx_list + priv->rx_head;
1518                 head_list_phys = priv->rx_list_dma
1519                         + sizeof(struct tlan_list)*priv->rx_head;
1520         }
1521
1522         if (!ack)
1523                 netdev_info(dev,
1524                             "Received interrupt for uncompleted RX frame\n");
1525
1526
1527         if (eoc) {
1528                 TLAN_DBG(TLAN_DEBUG_RX,
1529                          "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1530                          priv->rx_head, priv->rx_tail);
1531                 head_list = priv->rx_list + priv->rx_head;
1532                 head_list_phys = priv->rx_list_dma
1533                         + sizeof(struct tlan_list)*priv->rx_head;
1534                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1535                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1536                 priv->rx_eoc_count++;
1537         }
1538
1539         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1540                 tlan_dio_write8(dev->base_addr,
1541                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1542                 if (priv->timer.function == NULL)  {
1543                         priv->timer.function = tlan_timer;
1544                         priv->timer.data = (unsigned long) dev;
1545                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1546                         priv->timer_set_at = jiffies;
1547                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1548                         add_timer(&priv->timer);
1549                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1550                         priv->timer_set_at = jiffies;
1551                 }
1552         }
1553
1554         return ack;
1555
1556 }
1557
1558
1559
1560
1561 /***************************************************************
1562  *      tlan_handle_dummy
1563  *
1564  *      Returns:
1565  *              1
1566  *      Parms:
1567  *              dev             Device assigned the IRQ that was
1568  *                              raised.
1569  *              host_int        The contents of the HOST_INT
1570  *                              port.
1571  *
1572  *      This function handles the Dummy interrupt, which is
1573  *      raised whenever a test interrupt is generated by setting
1574  *      the Req_Int bit of HOST_CMD to 1.
1575  *
1576  **************************************************************/
1577
1578 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1579 {
1580         netdev_info(dev, "Test interrupt\n");
1581         return 1;
1582
1583 }
1584
1585
1586
1587
1588 /***************************************************************
1589  *      tlan_handle_tx_eoc
1590  *
1591  *      Returns:
1592  *              1
1593  *      Parms:
1594  *              dev             Device assigned the IRQ that was
1595  *                              raised.
1596  *              host_int        The contents of the HOST_INT
1597  *                              port.
1598  *
1599  *      This driver is structured to determine EOC occurrences by
1600  *      reading the CSTAT member of the list structure.  Tx EOC
1601  *      interrupts are disabled via the DIO INTDIS register.
1602  *      However, TLAN chips before revision 3.0 didn't have this
1603  *      functionality, so process EOC events if this is the
1604  *      case.
1605  *
1606  **************************************************************/
1607
1608 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1609 {
1610         struct tlan_priv        *priv = netdev_priv(dev);
1611         struct tlan_list                *head_list;
1612         dma_addr_t              head_list_phys;
1613         u32                     ack = 1;
1614
1615         host_int = 0;
1616         if (priv->tlan_rev < 0x30) {
1617                 TLAN_DBG(TLAN_DEBUG_TX,
1618                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1619                          priv->tx_head, priv->tx_tail);
1620                 head_list = priv->tx_list + priv->tx_head;
1621                 head_list_phys = priv->tx_list_dma
1622                         + sizeof(struct tlan_list)*priv->tx_head;
1623                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1624                     == TLAN_CSTAT_READY) {
1625                         netif_stop_queue(dev);
1626                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1627                         ack |= TLAN_HC_GO;
1628                 } else {
1629                         priv->tx_in_progress = 0;
1630                 }
1631         }
1632
1633         return ack;
1634
1635 }
1636
1637
1638
1639
1640 /***************************************************************
1641  *      tlan_handle_status_check
1642  *
1643  *      Returns:
1644  *              0 if Adapter check, 1 if Network Status check.
1645  *      Parms:
1646  *              dev             Device assigned the IRQ that was
1647  *                              raised.
1648  *              host_int        The contents of the HOST_INT
1649  *                              port.
1650  *
1651  *      This function handles Adapter Check/Network Status
1652  *      interrupts generated by the adapter.  It checks the
1653  *      vector in the HOST_INT register to determine if it is
1654  *      an Adapter Check interrupt.  If so, it resets the
1655  *      adapter.  Otherwise it clears the status registers
1656  *      and services the PHY.
1657  *
1658  **************************************************************/
1659
1660 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1661 {
1662         struct tlan_priv        *priv = netdev_priv(dev);
1663         u32             ack;
1664         u32             error;
1665         u8              net_sts;
1666         u32             phy;
1667         u16             tlphy_ctl;
1668         u16             tlphy_sts;
1669
1670         ack = 1;
1671         if (host_int & TLAN_HI_IV_MASK) {
1672                 netif_stop_queue(dev);
1673                 error = inl(dev->base_addr + TLAN_CH_PARM);
1674                 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1675                 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1676                 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1677
1678                 schedule_work(&priv->tlan_tqueue);
1679
1680                 netif_wake_queue(dev);
1681                 ack = 0;
1682         } else {
1683                 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1684                 phy = priv->phy[priv->phy_num];
1685
1686                 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1687                 if (net_sts) {
1688                         tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1689                         TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1690                                  dev->name, (unsigned) net_sts);
1691                 }
1692                 if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1693                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1694                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1695                         if (!(tlphy_sts & TLAN_TS_POLOK) &&
1696                             !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1697                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1698                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1699                                                    tlphy_ctl);
1700                         } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1701                                    (tlphy_ctl & TLAN_TC_SWAPOL)) {
1702                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1703                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1704                                                    tlphy_ctl);
1705                         }
1706
1707                         if (debug)
1708                                 tlan_phy_print(dev);
1709                 }
1710         }
1711
1712         return ack;
1713
1714 }
1715
1716
1717
1718
1719 /***************************************************************
1720  *      tlan_handle_rx_eoc
1721  *
1722  *      Returns:
1723  *              1
1724  *      Parms:
1725  *              dev             Device assigned the IRQ that was
1726  *                              raised.
1727  *              host_int        The contents of the HOST_INT
1728  *                              port.
1729  *
1730  *      This driver is structured to determine EOC occurrences by
1731  *      reading the CSTAT member of the list structure.  Rx EOC
1732  *      interrupts are disabled via the DIO INTDIS register.
1733  *      However, TLAN chips before revision 3.0 didn't have this
1734  *      CSTAT member or a INTDIS register, so if this chip is
1735  *      pre-3.0, process EOC interrupts normally.
1736  *
1737  **************************************************************/
1738
1739 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1740 {
1741         struct tlan_priv        *priv = netdev_priv(dev);
1742         dma_addr_t      head_list_phys;
1743         u32             ack = 1;
1744
1745         if (priv->tlan_rev < 0x30) {
1746                 TLAN_DBG(TLAN_DEBUG_RX,
1747                          "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1748                          priv->rx_head, priv->rx_tail);
1749                 head_list_phys = priv->rx_list_dma
1750                         + sizeof(struct tlan_list)*priv->rx_head;
1751                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1752                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1753                 priv->rx_eoc_count++;
1754         }
1755
1756         return ack;
1757
1758 }
1759
1760
1761
1762
1763 /*****************************************************************************
1764 ******************************************************************************
1765
1766 ThunderLAN driver timer function
1767
1768 ******************************************************************************
1769 *****************************************************************************/
1770
1771
1772 /***************************************************************
1773  *      tlan_timer
1774  *
1775  *      Returns:
1776  *              Nothing
1777  *      Parms:
1778  *              data    A value given to add timer when
1779  *                      add_timer was called.
1780  *
1781  *      This function handles timed functionality for the
1782  *      TLAN driver.  The two current timer uses are for
1783  *      delaying for autonegotionation and driving the ACT LED.
1784  *      -       Autonegotiation requires being allowed about
1785  *              2 1/2 seconds before attempting to transmit a
1786  *              packet.  It would be a very bad thing to hang
1787  *              the kernel this long, so the driver doesn't
1788  *              allow transmission 'til after this time, for
1789  *              certain PHYs.  It would be much nicer if all
1790  *              PHYs were interrupt-capable like the internal
1791  *              PHY.
1792  *      -       The ACT LED, which shows adapter activity, is
1793  *              driven by the driver, and so must be left on
1794  *              for a short period to power up the LED so it
1795  *              can be seen.  This delay can be changed by
1796  *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1797  *              if desired.  100 ms  produces a slightly
1798  *              sluggish response.
1799  *
1800  **************************************************************/
1801
1802 static void tlan_timer(unsigned long data)
1803 {
1804         struct net_device       *dev = (struct net_device *) data;
1805         struct tlan_priv        *priv = netdev_priv(dev);
1806         u32             elapsed;
1807         unsigned long   flags = 0;
1808
1809         priv->timer.function = NULL;
1810
1811         switch (priv->timer_type) {
1812 #ifdef MONITOR
1813         case TLAN_TIMER_LINK_BEAT:
1814                 tlan_phy_monitor(dev);
1815                 break;
1816 #endif
1817         case TLAN_TIMER_PHY_PDOWN:
1818                 tlan_phy_power_down(dev);
1819                 break;
1820         case TLAN_TIMER_PHY_PUP:
1821                 tlan_phy_power_up(dev);
1822                 break;
1823         case TLAN_TIMER_PHY_RESET:
1824                 tlan_phy_reset(dev);
1825                 break;
1826         case TLAN_TIMER_PHY_START_LINK:
1827                 tlan_phy_start_link(dev);
1828                 break;
1829         case TLAN_TIMER_PHY_FINISH_AN:
1830                 tlan_phy_finish_auto_neg(dev);
1831                 break;
1832         case TLAN_TIMER_FINISH_RESET:
1833                 tlan_finish_reset(dev);
1834                 break;
1835         case TLAN_TIMER_ACTIVITY:
1836                 spin_lock_irqsave(&priv->lock, flags);
1837                 if (priv->timer.function == NULL) {
1838                         elapsed = jiffies - priv->timer_set_at;
1839                         if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1840                                 tlan_dio_write8(dev->base_addr,
1841                                                 TLAN_LED_REG, TLAN_LED_LINK);
1842                         } else  {
1843                                 priv->timer.function = tlan_timer;
1844                                 priv->timer.expires = priv->timer_set_at
1845                                         + TLAN_TIMER_ACT_DELAY;
1846                                 spin_unlock_irqrestore(&priv->lock, flags);
1847                                 add_timer(&priv->timer);
1848                                 break;
1849                         }
1850                 }
1851                 spin_unlock_irqrestore(&priv->lock, flags);
1852                 break;
1853         default:
1854                 break;
1855         }
1856
1857 }
1858
1859
1860
1861
1862 /*****************************************************************************
1863 ******************************************************************************
1864
1865 ThunderLAN driver adapter related routines
1866
1867 ******************************************************************************
1868 *****************************************************************************/
1869
1870
1871 /***************************************************************
1872  *      tlan_reset_lists
1873  *
1874  *      Returns:
1875  *              Nothing
1876  *      Parms:
1877  *              dev     The device structure with the list
1878  *                      stuctures to be reset.
1879  *
1880  *      This routine sets the variables associated with managing
1881  *      the TLAN lists to their initial values.
1882  *
1883  **************************************************************/
1884
1885 static void tlan_reset_lists(struct net_device *dev)
1886 {
1887         struct tlan_priv *priv = netdev_priv(dev);
1888         int             i;
1889         struct tlan_list        *list;
1890         dma_addr_t      list_phys;
1891         struct sk_buff  *skb;
1892
1893         priv->tx_head = 0;
1894         priv->tx_tail = 0;
1895         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1896                 list = priv->tx_list + i;
1897                 list->c_stat = TLAN_CSTAT_UNUSED;
1898                 list->buffer[0].address = 0;
1899                 list->buffer[2].count = 0;
1900                 list->buffer[2].address = 0;
1901                 list->buffer[8].address = 0;
1902                 list->buffer[9].address = 0;
1903         }
1904
1905         priv->rx_head = 0;
1906         priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1907         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1908                 list = priv->rx_list + i;
1909                 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1910                 list->c_stat = TLAN_CSTAT_READY;
1911                 list->frame_size = TLAN_MAX_FRAME_SIZE;
1912                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1913                 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1914                 if (!skb) {
1915                         netdev_err(dev, "Out of memory for received data\n");
1916                         break;
1917                 }
1918
1919                 list->buffer[0].address = pci_map_single(priv->pci_dev,
1920                                                          skb->data,
1921                                                          TLAN_MAX_FRAME_SIZE,
1922                                                          PCI_DMA_FROMDEVICE);
1923                 tlan_store_skb(list, skb);
1924                 list->buffer[1].count = 0;
1925                 list->buffer[1].address = 0;
1926                 list->forward = list_phys + sizeof(struct tlan_list);
1927         }
1928
1929         /* in case ran out of memory early, clear bits */
1930         while (i < TLAN_NUM_RX_LISTS) {
1931                 tlan_store_skb(priv->rx_list + i, NULL);
1932                 ++i;
1933         }
1934         list->forward = 0;
1935
1936 }
1937
1938
1939 static void tlan_free_lists(struct net_device *dev)
1940 {
1941         struct tlan_priv *priv = netdev_priv(dev);
1942         int             i;
1943         struct tlan_list        *list;
1944         struct sk_buff  *skb;
1945
1946         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1947                 list = priv->tx_list + i;
1948                 skb = tlan_get_skb(list);
1949                 if (skb) {
1950                         pci_unmap_single(
1951                                 priv->pci_dev,
1952                                 list->buffer[0].address,
1953                                 max(skb->len,
1954                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
1955                                 PCI_DMA_TODEVICE);
1956                         dev_kfree_skb_any(skb);
1957                         list->buffer[8].address = 0;
1958                         list->buffer[9].address = 0;
1959                 }
1960         }
1961
1962         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1963                 list = priv->rx_list + i;
1964                 skb = tlan_get_skb(list);
1965                 if (skb) {
1966                         pci_unmap_single(priv->pci_dev,
1967                                          list->buffer[0].address,
1968                                          TLAN_MAX_FRAME_SIZE,
1969                                          PCI_DMA_FROMDEVICE);
1970                         dev_kfree_skb_any(skb);
1971                         list->buffer[8].address = 0;
1972                         list->buffer[9].address = 0;
1973                 }
1974         }
1975 }
1976
1977
1978
1979
1980 /***************************************************************
1981  *      tlan_print_dio
1982  *
1983  *      Returns:
1984  *              Nothing
1985  *      Parms:
1986  *              io_base         Base IO port of the device of
1987  *                              which to print DIO registers.
1988  *
1989  *      This function prints out all the internal (DIO)
1990  *      registers of a TLAN chip.
1991  *
1992  **************************************************************/
1993
1994 static void tlan_print_dio(u16 io_base)
1995 {
1996         u32 data0, data1;
1997         int     i;
1998
1999         pr_info("Contents of internal registers for io base 0x%04hx\n",
2000                 io_base);
2001         pr_info("Off.  +0        +4\n");
2002         for (i = 0; i < 0x4C; i += 8) {
2003                 data0 = tlan_dio_read32(io_base, i);
2004                 data1 = tlan_dio_read32(io_base, i + 0x4);
2005                 pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2006         }
2007
2008 }
2009
2010
2011
2012
2013 /***************************************************************
2014  *      TLan_PrintList
2015  *
2016  *      Returns:
2017  *              Nothing
2018  *      Parms:
2019  *              list    A pointer to the struct tlan_list structure to
2020  *                      be printed.
2021  *              type    A string to designate type of list,
2022  *                      "Rx" or "Tx".
2023  *              num     The index of the list.
2024  *
2025  *      This function prints out the contents of the list
2026  *      pointed to by the list parameter.
2027  *
2028  **************************************************************/
2029
2030 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2031 {
2032         int i;
2033
2034         pr_info("%s List %d at %p\n", type, num, list);
2035         pr_info("   Forward    = 0x%08x\n",  list->forward);
2036         pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2037         pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2038         /* for (i = 0; i < 10; i++) { */
2039         for (i = 0; i < 2; i++) {
2040                 pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2041                         i, list->buffer[i].count, list->buffer[i].address);
2042         }
2043
2044 }
2045
2046
2047
2048
2049 /***************************************************************
2050  *      tlan_read_and_clear_stats
2051  *
2052  *      Returns:
2053  *              Nothing
2054  *      Parms:
2055  *              dev     Pointer to device structure of adapter
2056  *                      to which to read stats.
2057  *              record  Flag indicating whether to add
2058  *
2059  *      This functions reads all the internal status registers
2060  *      of the TLAN chip, which clears them as a side effect.
2061  *      It then either adds the values to the device's status
2062  *      struct, or discards them, depending on whether record
2063  *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2064  *
2065  **************************************************************/
2066
2067 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2068 {
2069         u32             tx_good, tx_under;
2070         u32             rx_good, rx_over;
2071         u32             def_tx, crc, code;
2072         u32             multi_col, single_col;
2073         u32             excess_col, late_col, loss;
2074
2075         outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2076         tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2077         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2078         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2079         tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2080
2081         outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2082         rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2083         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2084         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2085         rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2086
2087         outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2088         def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2089         def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2090         crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2091         code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2092
2093         outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2094         multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2095         multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2096         single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2097         single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2098
2099         outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2100         excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2101         late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2102         loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2103
2104         if (record) {
2105                 dev->stats.rx_packets += rx_good;
2106                 dev->stats.rx_errors  += rx_over + crc + code;
2107                 dev->stats.tx_packets += tx_good;
2108                 dev->stats.tx_errors  += tx_under + loss;
2109                 dev->stats.collisions += multi_col
2110                         + single_col + excess_col + late_col;
2111
2112                 dev->stats.rx_over_errors    += rx_over;
2113                 dev->stats.rx_crc_errors     += crc;
2114                 dev->stats.rx_frame_errors   += code;
2115
2116                 dev->stats.tx_aborted_errors += tx_under;
2117                 dev->stats.tx_carrier_errors += loss;
2118         }
2119
2120 }
2121
2122
2123
2124
2125 /***************************************************************
2126  *      TLan_Reset
2127  *
2128  *      Returns:
2129  *              0
2130  *      Parms:
2131  *              dev     Pointer to device structure of adapter
2132  *                      to be reset.
2133  *
2134  *      This function resets the adapter and it's physical
2135  *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2136  *      Programmer's Guide" for details.  The routine tries to
2137  *      implement what is detailed there, though adjustments
2138  *      have been made.
2139  *
2140  **************************************************************/
2141
2142 static void
2143 tlan_reset_adapter(struct net_device *dev)
2144 {
2145         struct tlan_priv        *priv = netdev_priv(dev);
2146         int             i;
2147         u32             addr;
2148         u32             data;
2149         u8              data8;
2150
2151         priv->tlan_full_duplex = false;
2152         priv->phy_online = 0;
2153         netif_carrier_off(dev);
2154
2155 /*  1.  Assert reset bit. */
2156
2157         data = inl(dev->base_addr + TLAN_HOST_CMD);
2158         data |= TLAN_HC_AD_RST;
2159         outl(data, dev->base_addr + TLAN_HOST_CMD);
2160
2161         udelay(1000);
2162
2163 /*  2.  Turn off interrupts. (Probably isn't necessary) */
2164
2165         data = inl(dev->base_addr + TLAN_HOST_CMD);
2166         data |= TLAN_HC_INT_OFF;
2167         outl(data, dev->base_addr + TLAN_HOST_CMD);
2168
2169 /*  3.  Clear AREGs and HASHs. */
2170
2171         for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2172                 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2173
2174 /*  4.  Setup NetConfig register. */
2175
2176         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2177         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2178
2179 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2180
2181         outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2182         outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2183
2184 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2185
2186         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2187         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2188         tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2189
2190 /*  7.  Setup the remaining registers. */
2191
2192         if (priv->tlan_rev >= 0x30) {
2193                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2194                 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2195         }
2196         tlan_phy_detect(dev);
2197         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2198
2199         if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2200                 data |= TLAN_NET_CFG_BIT;
2201                 if (priv->aui == 1) {
2202                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2203                 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2204                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2205                         priv->tlan_full_duplex = true;
2206                 } else {
2207                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2208                 }
2209         }
2210
2211         if (priv->phy_num == 0)
2212                 data |= TLAN_NET_CFG_PHY_EN;
2213         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2214
2215         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2216                 tlan_finish_reset(dev);
2217         else
2218                 tlan_phy_power_down(dev);
2219
2220 }
2221
2222
2223
2224
2225 static void
2226 tlan_finish_reset(struct net_device *dev)
2227 {
2228         struct tlan_priv        *priv = netdev_priv(dev);
2229         u8              data;
2230         u32             phy;
2231         u8              sio;
2232         u16             status;
2233         u16             partner;
2234         u16             tlphy_ctl;
2235         u16             tlphy_par;
2236         u16             tlphy_id1, tlphy_id2;
2237         int             i;
2238
2239         phy = priv->phy[priv->phy_num];
2240
2241         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2242         if (priv->tlan_full_duplex)
2243                 data |= TLAN_NET_CMD_DUPLEX;
2244         tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2245         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2246         if (priv->phy_num == 0)
2247                 data |= TLAN_NET_MASK_MASK7;
2248         tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2249         tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2250         tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2251         tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2252
2253         if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2254             (priv->aui)) {
2255                 status = MII_GS_LINK;
2256                 netdev_info(dev, "Link forced\n");
2257         } else {
2258                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2259                 udelay(1000);
2260                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2261                 if ((status & MII_GS_LINK) &&
2262                     /* We only support link info on Nat.Sem. PHY's */
2263                     (tlphy_id1 == NAT_SEM_ID1) &&
2264                     (tlphy_id2 == NAT_SEM_ID2)) {
2265                         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2266                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2267
2268                         netdev_info(dev,
2269                                     "Link active with %s %uMbps %s-Duplex\n",
2270                                     !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2271                                     ? "forced" : "Autonegotiation enabled,",
2272                                     tlphy_par & TLAN_PHY_SPEED_100
2273                                     ? 100 : 10,
2274                                     tlphy_par & TLAN_PHY_DUPLEX_FULL
2275                                     ? "Full" : "Half");
2276
2277                         if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2278                                 netdev_info(dev, "Partner capability:");
2279                                 for (i = 5; i < 10; i++)
2280                                         if (partner & (1 << i))
2281                                                 pr_cont(" %s", media[i-5]);
2282                                 pr_cont("\n");
2283                         }
2284
2285                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2286                                         TLAN_LED_LINK);
2287 #ifdef MONITOR
2288                         /* We have link beat..for now anyway */
2289                         priv->link = 1;
2290                         /*Enabling link beat monitoring */
2291                         tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2292 #endif
2293                 } else if (status & MII_GS_LINK)  {
2294                         netdev_info(dev, "Link active\n");
2295                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2296                                         TLAN_LED_LINK);
2297                 }
2298         }
2299
2300         if (priv->phy_num == 0) {
2301                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2302                 tlphy_ctl |= TLAN_TC_INTEN;
2303                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2304                 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2305                 sio |= TLAN_NET_SIO_MINTEN;
2306                 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2307         }
2308
2309         if (status & MII_GS_LINK) {
2310                 tlan_set_mac(dev, 0, dev->dev_addr);
2311                 priv->phy_online = 1;
2312                 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2313                 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2314                         outb((TLAN_HC_REQ_INT >> 8),
2315                              dev->base_addr + TLAN_HOST_CMD + 1);
2316                 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2317                 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2318                 netif_carrier_on(dev);
2319         } else {
2320                 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2321                 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2322                 return;
2323         }
2324         tlan_set_multicast_list(dev);
2325
2326 }
2327
2328
2329
2330
2331 /***************************************************************
2332  *      tlan_set_mac
2333  *
2334  *      Returns:
2335  *              Nothing
2336  *      Parms:
2337  *              dev     Pointer to device structure of adapter
2338  *                      on which to change the AREG.
2339  *              areg    The AREG to set the address in (0 - 3).
2340  *              mac     A pointer to an array of chars.  Each
2341  *                      element stores one byte of the address.
2342  *                      IE, it isn't in ascii.
2343  *
2344  *      This function transfers a MAC address to one of the
2345  *      TLAN AREGs (address registers).  The TLAN chip locks
2346  *      the register on writing to offset 0 and unlocks the
2347  *      register after writing to offset 5.  If NULL is passed
2348  *      in mac, then the AREG is filled with 0's.
2349  *
2350  **************************************************************/
2351
2352 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2353 {
2354         int i;
2355
2356         areg *= 6;
2357
2358         if (mac != NULL) {
2359                 for (i = 0; i < 6; i++)
2360                         tlan_dio_write8(dev->base_addr,
2361                                         TLAN_AREG_0 + areg + i, mac[i]);
2362         } else {
2363                 for (i = 0; i < 6; i++)
2364                         tlan_dio_write8(dev->base_addr,
2365                                         TLAN_AREG_0 + areg + i, 0);
2366         }
2367
2368 }
2369
2370
2371
2372
2373 /*****************************************************************************
2374 ******************************************************************************
2375
2376 ThunderLAN driver PHY layer routines
2377
2378 ******************************************************************************
2379 *****************************************************************************/
2380
2381
2382
2383 /*********************************************************************
2384  *      tlan_phy_print
2385  *
2386  *      Returns:
2387  *              Nothing
2388  *      Parms:
2389  *              dev     A pointer to the device structure of the
2390  *                      TLAN device having the PHYs to be detailed.
2391  *
2392  *      This function prints the registers a PHY (aka transceiver).
2393  *
2394  ********************************************************************/
2395
2396 static void tlan_phy_print(struct net_device *dev)
2397 {
2398         struct tlan_priv *priv = netdev_priv(dev);
2399         u16 i, data0, data1, data2, data3, phy;
2400
2401         phy = priv->phy[priv->phy_num];
2402
2403         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2404                 netdev_info(dev, "Unmanaged PHY\n");
2405         } else if (phy <= TLAN_PHY_MAX_ADDR) {
2406                 netdev_info(dev, "PHY 0x%02x\n", phy);
2407                 pr_info("   Off.  +0     +1     +2     +3\n");
2408                 for (i = 0; i < 0x20; i += 4) {
2409                         tlan_mii_read_reg(dev, phy, i, &data0);
2410                         tlan_mii_read_reg(dev, phy, i + 1, &data1);
2411                         tlan_mii_read_reg(dev, phy, i + 2, &data2);
2412                         tlan_mii_read_reg(dev, phy, i + 3, &data3);
2413                         pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2414                                 i, data0, data1, data2, data3);
2415                 }
2416         } else {
2417                 netdev_info(dev, "Invalid PHY\n");
2418         }
2419
2420 }
2421
2422
2423
2424
2425 /*********************************************************************
2426  *      tlan_phy_detect
2427  *
2428  *      Returns:
2429  *              Nothing
2430  *      Parms:
2431  *              dev     A pointer to the device structure of the adapter
2432  *                      for which the PHY needs determined.
2433  *
2434  *      So far I've found that adapters which have external PHYs
2435  *      may also use the internal PHY for part of the functionality.
2436  *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2437  *      chip has an internal PHY, and then finds the first external
2438  *      PHY (starting from address 0) if it exists).
2439  *
2440  ********************************************************************/
2441
2442 static void tlan_phy_detect(struct net_device *dev)
2443 {
2444         struct tlan_priv *priv = netdev_priv(dev);
2445         u16             control;
2446         u16             hi;
2447         u16             lo;
2448         u32             phy;
2449
2450         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2451                 priv->phy_num = 0xffff;
2452                 return;
2453         }
2454
2455         tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2456
2457         if (hi != 0xffff)
2458                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2459         else
2460                 priv->phy[0] = TLAN_PHY_NONE;
2461
2462         priv->phy[1] = TLAN_PHY_NONE;
2463         for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2464                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2465                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2466                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2467                 if ((control != 0xffff) ||
2468                     (hi != 0xffff) || (lo != 0xffff)) {
2469                         TLAN_DBG(TLAN_DEBUG_GNRL,
2470                                  "PHY found at %02x %04x %04x %04x\n",
2471                                  phy, control, hi, lo);
2472                         if ((priv->phy[1] == TLAN_PHY_NONE) &&
2473                             (phy != TLAN_PHY_MAX_ADDR)) {
2474                                 priv->phy[1] = phy;
2475                         }
2476                 }
2477         }
2478
2479         if (priv->phy[1] != TLAN_PHY_NONE)
2480                 priv->phy_num = 1;
2481         else if (priv->phy[0] != TLAN_PHY_NONE)
2482                 priv->phy_num = 0;
2483         else
2484                 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2485
2486 }
2487
2488
2489
2490
2491 static void tlan_phy_power_down(struct net_device *dev)
2492 {
2493         struct tlan_priv        *priv = netdev_priv(dev);
2494         u16             value;
2495
2496         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2497         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2498         tlan_mii_sync(dev->base_addr);
2499         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2500         if ((priv->phy_num == 0) &&
2501             (priv->phy[1] != TLAN_PHY_NONE) &&
2502             (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2503                 tlan_mii_sync(dev->base_addr);
2504                 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2505         }
2506
2507         /* Wait for 50 ms and powerup
2508          * This is abitrary.  It is intended to make sure the
2509          * transceiver settles.
2510          */
2511         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2512
2513 }
2514
2515
2516
2517
2518 static void tlan_phy_power_up(struct net_device *dev)
2519 {
2520         struct tlan_priv        *priv = netdev_priv(dev);
2521         u16             value;
2522
2523         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2524         tlan_mii_sync(dev->base_addr);
2525         value = MII_GC_LOOPBK;
2526         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2527         tlan_mii_sync(dev->base_addr);
2528         /* Wait for 500 ms and reset the
2529          * transceiver.  The TLAN docs say both 50 ms and
2530          * 500 ms, so do the longer, just in case.
2531          */
2532         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2533
2534 }
2535
2536
2537
2538
2539 static void tlan_phy_reset(struct net_device *dev)
2540 {
2541         struct tlan_priv        *priv = netdev_priv(dev);
2542         u16             phy;
2543         u16             value;
2544
2545         phy = priv->phy[priv->phy_num];
2546
2547         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name);
2548         tlan_mii_sync(dev->base_addr);
2549         value = MII_GC_LOOPBK | MII_GC_RESET;
2550         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2551         tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2552         while (value & MII_GC_RESET)
2553                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2554
2555         /* Wait for 500 ms and initialize.
2556          * I don't remember why I wait this long.
2557          * I've changed this to 50ms, as it seems long enough.
2558          */
2559         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2560
2561 }
2562
2563
2564
2565
2566 static void tlan_phy_start_link(struct net_device *dev)
2567 {
2568         struct tlan_priv        *priv = netdev_priv(dev);
2569         u16             ability;
2570         u16             control;
2571         u16             data;
2572         u16             phy;
2573         u16             status;
2574         u16             tctl;
2575
2576         phy = priv->phy[priv->phy_num];
2577         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2578         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2579         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2580
2581         if ((status & MII_GS_AUTONEG) &&
2582             (!priv->aui)) {
2583                 ability = status >> 11;
2584                 if (priv->speed  == TLAN_SPEED_10 &&
2585                     priv->duplex == TLAN_DUPLEX_HALF) {
2586                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2587                 } else if (priv->speed == TLAN_SPEED_10 &&
2588                            priv->duplex == TLAN_DUPLEX_FULL) {
2589                         priv->tlan_full_duplex = true;
2590                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2591                 } else if (priv->speed == TLAN_SPEED_100 &&
2592                            priv->duplex == TLAN_DUPLEX_HALF) {
2593                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2594                 } else if (priv->speed == TLAN_SPEED_100 &&
2595                            priv->duplex == TLAN_DUPLEX_FULL) {
2596                         priv->tlan_full_duplex = true;
2597                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2598                 } else {
2599
2600                         /* Set Auto-Neg advertisement */
2601                         tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2602                                            (ability << 5) | 1);
2603                         /* Enablee Auto-Neg */
2604                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2605                         /* Restart Auto-Neg */
2606                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2607                         /* Wait for 4 sec for autonegotiation
2608                          * to complete.  The max spec time is less than this
2609                          * but the card need additional time to start AN.
2610                          * .5 sec should be plenty extra.
2611                          */
2612                         netdev_info(dev, "Starting autonegotiation\n");
2613                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2614                         return;
2615                 }
2616
2617         }
2618
2619         if ((priv->aui) && (priv->phy_num != 0)) {
2620                 priv->phy_num = 0;
2621                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2622                         | TLAN_NET_CFG_PHY_EN;
2623                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2624                 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2625                 return;
2626         } else if (priv->phy_num == 0) {
2627                 control = 0;
2628                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2629                 if (priv->aui) {
2630                         tctl |= TLAN_TC_AUISEL;
2631                 } else {
2632                         tctl &= ~TLAN_TC_AUISEL;
2633                         if (priv->duplex == TLAN_DUPLEX_FULL) {
2634                                 control |= MII_GC_DUPLEX;
2635                                 priv->tlan_full_duplex = true;
2636                         }
2637                         if (priv->speed == TLAN_SPEED_100)
2638                                 control |= MII_GC_SPEEDSEL;
2639                 }
2640                 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2641                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2642         }
2643
2644         /* Wait for 2 sec to give the transceiver time
2645          * to establish link.
2646          */
2647         tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2648
2649 }
2650
2651
2652
2653
2654 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2655 {
2656         struct tlan_priv        *priv = netdev_priv(dev);
2657         u16             an_adv;
2658         u16             an_lpa;
2659         u16             data;
2660         u16             mode;
2661         u16             phy;
2662         u16             status;
2663
2664         phy = priv->phy[priv->phy_num];
2665
2666         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2667         udelay(1000);
2668         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2669
2670         if (!(status & MII_GS_AUTOCMPLT)) {
2671                 /* Wait for 8 sec to give the process
2672                  * more time.  Perhaps we should fail after a while.
2673                  */
2674                 if (!priv->neg_be_verbose++) {
2675                         pr_info("Giving autonegotiation more time.\n");
2676                         pr_info("Please check that your adapter has\n");
2677                         pr_info("been properly connected to a HUB or Switch.\n");
2678                         pr_info("Trying to establish link in the background...\n");
2679                 }
2680                 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2681                 return;
2682         }
2683
2684         netdev_info(dev, "Autonegotiation complete\n");
2685         tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2686         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2687         mode = an_adv & an_lpa & 0x03E0;
2688         if (mode & 0x0100)
2689                 priv->tlan_full_duplex = true;
2690         else if (!(mode & 0x0080) && (mode & 0x0040))
2691                 priv->tlan_full_duplex = true;
2692
2693         if ((!(mode & 0x0180)) &&
2694             (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2695             (priv->phy_num != 0)) {
2696                 priv->phy_num = 0;
2697                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2698                         | TLAN_NET_CFG_PHY_EN;
2699                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2700                 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2701                 return;
2702         }
2703
2704         if (priv->phy_num == 0) {
2705                 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2706                     (an_adv & an_lpa & 0x0040)) {
2707                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2708                                            MII_GC_AUTOENB | MII_GC_DUPLEX);
2709                         netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2710                 } else {
2711                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2712                                            MII_GC_AUTOENB);
2713                         netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2714                 }
2715         }
2716
2717         /* Wait for 100 ms.  No reason in partiticular.
2718          */
2719         tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2720
2721 }
2722
2723 #ifdef MONITOR
2724
2725 /*********************************************************************
2726  *
2727  *     tlan_phy_monitor
2728  *
2729  *     Returns:
2730  *            None
2731  *
2732  *     Params:
2733  *            dev            The device structure of this device.
2734  *
2735  *
2736  *     This function monitors PHY condition by reading the status
2737  *     register via the MII bus. This can be used to give info
2738  *     about link changes (up/down), and possible switch to alternate
2739  *     media.
2740  *
2741  *******************************************************************/
2742
2743 void tlan_phy_monitor(struct net_device *dev)
2744 {
2745         struct tlan_priv *priv = netdev_priv(dev);
2746         u16     phy;
2747         u16     phy_status;
2748
2749         phy = priv->phy[priv->phy_num];
2750
2751         /* Get PHY status register */
2752         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2753
2754         /* Check if link has been lost */
2755         if (!(phy_status & MII_GS_LINK)) {
2756                 if (priv->link) {
2757                         priv->link = 0;
2758                         printk(KERN_DEBUG "TLAN: %s has lost link\n",
2759                                dev->name);
2760                         netif_carrier_off(dev);
2761                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2762                         return;
2763                 }
2764         }
2765
2766         /* Link restablished? */
2767         if ((phy_status & MII_GS_LINK) && !priv->link) {
2768                 priv->link = 1;
2769                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2770                        dev->name);
2771                 netif_carrier_on(dev);
2772         }
2773
2774         /* Setup a new monitor */
2775         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2776 }
2777
2778 #endif /* MONITOR */
2779
2780
2781 /*****************************************************************************
2782 ******************************************************************************
2783
2784 ThunderLAN driver MII routines
2785
2786 these routines are based on the information in chap. 2 of the
2787 "ThunderLAN Programmer's Guide", pp. 15-24.
2788
2789 ******************************************************************************
2790 *****************************************************************************/
2791
2792
2793 /***************************************************************
2794  *      tlan_mii_read_reg
2795  *
2796  *      Returns:
2797  *              false   if ack received ok
2798  *              true    if no ack received or other error
2799  *
2800  *      Parms:
2801  *              dev             The device structure containing
2802  *                              The io address and interrupt count
2803  *                              for this device.
2804  *              phy             The address of the PHY to be queried.
2805  *              reg             The register whose contents are to be
2806  *                              retrieved.
2807  *              val             A pointer to a variable to store the
2808  *                              retrieved value.
2809  *
2810  *      This function uses the TLAN's MII bus to retrieve the contents
2811  *      of a given register on a PHY.  It sends the appropriate info
2812  *      and then reads the 16-bit register value from the MII bus via
2813  *      the TLAN SIO register.
2814  *
2815  **************************************************************/
2816
2817 static bool
2818 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2819 {
2820         u8      nack;
2821         u16     sio, tmp;
2822         u32     i;
2823         bool    err;
2824         int     minten;
2825         struct tlan_priv *priv = netdev_priv(dev);
2826         unsigned long flags = 0;
2827
2828         err = false;
2829         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2830         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2831
2832         if (!in_irq())
2833                 spin_lock_irqsave(&priv->lock, flags);
2834
2835         tlan_mii_sync(dev->base_addr);
2836
2837         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2838         if (minten)
2839                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2840
2841         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
2842         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* read  (10b) */
2843         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
2844         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
2845
2846
2847         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);        /* change direction */
2848
2849         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* clock idle bit */
2850         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2851         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* wait 300ns */
2852
2853         nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);   /* check for ACK */
2854         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);           /* finish ACK */
2855         if (nack) {                                     /* no ACK, so fake it */
2856                 for (i = 0; i < 16; i++) {
2857                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2858                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2859                 }
2860                 tmp = 0xffff;
2861                 err = true;
2862         } else {                                        /* ACK, so read data */
2863                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2864                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2865                         if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2866                                 tmp |= i;
2867                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2868                 }
2869         }
2870
2871
2872         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* idle cycle */
2873         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2874
2875         if (minten)
2876                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2877
2878         *val = tmp;
2879
2880         if (!in_irq())
2881                 spin_unlock_irqrestore(&priv->lock, flags);
2882
2883         return err;
2884
2885 }
2886
2887
2888
2889
2890 /***************************************************************
2891  *      tlan_mii_send_data
2892  *
2893  *      Returns:
2894  *              Nothing
2895  *      Parms:
2896  *              base_port       The base IO port of the adapter in
2897  *                              question.
2898  *              dev             The address of the PHY to be queried.
2899  *              data            The value to be placed on the MII bus.
2900  *              num_bits        The number of bits in data that are to
2901  *                              be placed on the MII bus.
2902  *
2903  *      This function sends on sequence of bits on the MII
2904  *      configuration bus.
2905  *
2906  **************************************************************/
2907
2908 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2909 {
2910         u16 sio;
2911         u32 i;
2912
2913         if (num_bits == 0)
2914                 return;
2915
2916         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2917         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2918         tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2919
2920         for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2921                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2922                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2923                 if (data & i)
2924                         tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2925                 else
2926                         tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2927                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2928                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2929         }
2930
2931 }
2932
2933
2934
2935
2936 /***************************************************************
2937  *      TLan_MiiSync
2938  *
2939  *      Returns:
2940  *              Nothing
2941  *      Parms:
2942  *              base_port       The base IO port of the adapter in
2943  *                              question.
2944  *
2945  *      This functions syncs all PHYs in terms of the MII configuration
2946  *      bus.
2947  *
2948  **************************************************************/
2949
2950 static void tlan_mii_sync(u16 base_port)
2951 {
2952         int i;
2953         u16 sio;
2954
2955         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2956         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2957
2958         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2959         for (i = 0; i < 32; i++) {
2960                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2961                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2962         }
2963
2964 }
2965
2966
2967
2968
2969 /***************************************************************
2970  *      tlan_mii_write_reg
2971  *
2972  *      Returns:
2973  *              Nothing
2974  *      Parms:
2975  *              dev             The device structure for the device
2976  *                              to write to.
2977  *              phy             The address of the PHY to be written to.
2978  *              reg             The register whose contents are to be
2979  *                              written.
2980  *              val             The value to be written to the register.
2981  *
2982  *      This function uses the TLAN's MII bus to write the contents of a
2983  *      given register on a PHY.  It sends the appropriate info and then
2984  *      writes the 16-bit register value from the MII configuration bus
2985  *      via the TLAN SIO register.
2986  *
2987  **************************************************************/
2988
2989 static void
2990 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2991 {
2992         u16     sio;
2993         int     minten;
2994         unsigned long flags = 0;
2995         struct tlan_priv *priv = netdev_priv(dev);
2996
2997         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2998         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2999
3000         if (!in_irq())
3001                 spin_lock_irqsave(&priv->lock, flags);
3002
3003         tlan_mii_sync(dev->base_addr);
3004
3005         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3006         if (minten)
3007                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3008
3009         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
3010         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* write (01b) */
3011         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
3012         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
3013
3014         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* send ACK */
3015         tlan_mii_send_data(dev->base_addr, val, 16);    /* send data */
3016
3017         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3018         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3019
3020         if (minten)
3021                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3022
3023         if (!in_irq())
3024                 spin_unlock_irqrestore(&priv->lock, flags);
3025
3026 }
3027
3028
3029
3030
3031 /*****************************************************************************
3032 ******************************************************************************
3033
3034 ThunderLAN driver eeprom routines
3035
3036 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3037 EEPROM.  these functions are based on information in microchip's
3038 data sheet.  I don't know how well this functions will work with
3039 other Eeproms.
3040
3041 ******************************************************************************
3042 *****************************************************************************/
3043
3044
3045 /***************************************************************
3046  *      tlan_ee_send_start
3047  *
3048  *      Returns:
3049  *              Nothing
3050  *      Parms:
3051  *              io_base         The IO port base address for the
3052  *                              TLAN device with the EEPROM to
3053  *                              use.
3054  *
3055  *      This function sends a start cycle to an EEPROM attached
3056  *      to a TLAN chip.
3057  *
3058  **************************************************************/
3059
3060 static void tlan_ee_send_start(u16 io_base)
3061 {
3062         u16     sio;
3063
3064         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3065         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3066
3067         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3068         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3069         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3070         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3071         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3072
3073 }
3074
3075
3076
3077
3078 /***************************************************************
3079  *      tlan_ee_send_byte
3080  *
3081  *      Returns:
3082  *              If the correct ack was received, 0, otherwise 1
3083  *      Parms:  io_base         The IO port base address for the
3084  *                              TLAN device with the EEPROM to
3085  *                              use.
3086  *              data            The 8 bits of information to
3087  *                              send to the EEPROM.
3088  *              stop            If TLAN_EEPROM_STOP is passed, a
3089  *                              stop cycle is sent after the
3090  *                              byte is sent after the ack is
3091  *                              read.
3092  *
3093  *      This function sends a byte on the serial EEPROM line,
3094  *      driving the clock to send each bit. The function then
3095  *      reverses transmission direction and reads an acknowledge
3096  *      bit.
3097  *
3098  **************************************************************/
3099
3100 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3101 {
3102         int     err;
3103         u8      place;
3104         u16     sio;
3105
3106         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3107         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3108
3109         /* Assume clock is low, tx is enabled; */
3110         for (place = 0x80; place != 0; place >>= 1) {
3111                 if (place & data)
3112                         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3113                 else
3114                         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3115                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3116                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3117         }
3118         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3119         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3120         err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3121         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3122         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3123
3124         if ((!err) && stop) {
3125                 /* STOP, raise data while clock is high */
3126                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3127                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3128                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3129         }
3130
3131         return err;
3132
3133 }
3134
3135
3136
3137
3138 /***************************************************************
3139  *      tlan_ee_receive_byte
3140  *
3141  *      Returns:
3142  *              Nothing
3143  *      Parms:
3144  *              io_base         The IO port base address for the
3145  *                              TLAN device with the EEPROM to
3146  *                              use.
3147  *              data            An address to a char to hold the
3148  *                              data sent from the EEPROM.
3149  *              stop            If TLAN_EEPROM_STOP is passed, a
3150  *                              stop cycle is sent after the
3151  *                              byte is received, and no ack is
3152  *                              sent.
3153  *
3154  *      This function receives 8 bits of data from the EEPROM
3155  *      over the serial link.  It then sends and ack bit, or no
3156  *      ack and a stop bit.  This function is used to retrieve
3157  *      data after the address of a byte in the EEPROM has been
3158  *      sent.
3159  *
3160  **************************************************************/
3161
3162 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3163 {
3164         u8  place;
3165         u16 sio;
3166
3167         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3168         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3169         *data = 0;
3170
3171         /* Assume clock is low, tx is enabled; */
3172         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3173         for (place = 0x80; place; place >>= 1) {
3174                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3175                 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3176                         *data |= place;
3177                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3178         }
3179
3180         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3181         if (!stop) {
3182                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3183                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3184                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3185         } else {
3186                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);  /* no ack = 1 (?) */
3187                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3188                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3189                 /* STOP, raise data while clock is high */
3190                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3191                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3192                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3193         }
3194
3195 }
3196
3197
3198
3199
3200 /***************************************************************
3201  *      tlan_ee_read_byte
3202  *
3203  *      Returns:
3204  *              No error = 0, else, the stage at which the error
3205  *              occurred.
3206  *      Parms:
3207  *              io_base         The IO port base address for the
3208  *                              TLAN device with the EEPROM to
3209  *                              use.
3210  *              ee_addr         The address of the byte in the
3211  *                              EEPROM whose contents are to be
3212  *                              retrieved.
3213  *              data            An address to a char to hold the
3214  *                              data obtained from the EEPROM.
3215  *
3216  *      This function reads a byte of information from an byte
3217  *      cell in the EEPROM.
3218  *
3219  **************************************************************/
3220
3221 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3222 {
3223         int err;
3224         struct tlan_priv *priv = netdev_priv(dev);
3225         unsigned long flags = 0;
3226         int ret = 0;
3227
3228         spin_lock_irqsave(&priv->lock, flags);
3229
3230         tlan_ee_send_start(dev->base_addr);
3231         err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3232         if (err) {
3233                 ret = 1;
3234                 goto fail;
3235         }
3236         err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3237         if (err) {
3238                 ret = 2;
3239                 goto fail;
3240         }
3241         tlan_ee_send_start(dev->base_addr);
3242         err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3243         if (err) {
3244                 ret = 3;
3245                 goto fail;
3246         }
3247         tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3248 fail:
3249         spin_unlock_irqrestore(&priv->lock, flags);
3250
3251         return ret;
3252
3253 }
3254
3255
3256