drivers/net/ethernet/ti/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/hardirq.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/ioport.h>
  37 #include <linux/eisa.h>
  38 #include <linux/pci.h>
  39 #include <linux/dma-mapping.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/delay.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/workqueue.h>
  45 #include <linux/mii.h>
  46
  47 #include "tlan.h"
  48
  49
  50 /* For removing EISA devices */
  51 static  struct net_device       *tlan_eisa_devices;
  52
  53 static  int             tlan_devices_installed;
  54
  55 /* Set speed, duplex and aui settings */
  56 static  int aui[MAX_TLAN_BOARDS];
  57 static  int duplex[MAX_TLAN_BOARDS];
  58 static  int speed[MAX_TLAN_BOARDS];
  59 static  int boards_found;
  60 module_param_array(aui, int, NULL, 0);
  61 module_param_array(duplex, int, NULL, 0);
  62 module_param_array(speed, int, NULL, 0);
  63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
  64 MODULE_PARM_DESC(duplex,
  65                  "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
  66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
  67
  68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
  69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
  70 MODULE_LICENSE("GPL");
  71
  72
  73 /* Define this to enable Link beat monitoring */
  74 #undef MONITOR
  75
  76 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
  77 static  int             debug;
  78 module_param(debug, int, 0);
  79 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
  80
  81 static  const char tlan_signature[] = "TLAN";
  82 static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
  83 static  int tlan_have_pci;
  84 static  int tlan_have_eisa;
  85
  86 static const char * const media[] = {
  87         "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
  88         "100BaseTx-FD", "100BaseT4", NULL
  89 };
  90
  91 static struct board {
  92         const char      *device_label;
  93         u32             flags;
  94         u16             addr_ofs;
  95 } board_info[] = {
  96         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  97         { "Compaq Netelligent 10/100 TX PCI UTP",
  98           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  99         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 100         { "Compaq NetFlex-3/P",
 101           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 102         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 103         { "Compaq Netelligent Integrated 10/100 TX UTP",
 104           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 105         { "Compaq Netelligent Dual 10/100 TX PCI UTP",
 106           TLAN_ADAPTER_NONE, 0x83 },
 107         { "Compaq Netelligent 10/100 TX Embedded UTP",
 108           TLAN_ADAPTER_NONE, 0x83 },
 109         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 110         { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
 111         { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
 112         { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 113         { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
 114         { "Compaq NetFlex-3/E",
 115           TLAN_ADAPTER_ACTIVITY_LED |   /* EISA card */
 116           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 117         { "Compaq NetFlex-3/E",
 118           TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
 119 };
 120
 121 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
 122         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
 123           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 124         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
 125           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 126         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
 127           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
 128         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
 129           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
 130         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
 131           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 132         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
 133           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
 134         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
 135           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
 136         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
 137           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
 138         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
 139           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
 140         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
 141           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
 142         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
 143           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
 144         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
 145           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
 146         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
 147           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
 148         { 0,}
 149 };
 150 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
 151
 152 static void     tlan_eisa_probe(void);
 153 static void     tlan_eisa_cleanup(void);
 154 static int      tlan_init(struct net_device *);
 155 static int      tlan_open(struct net_device *dev);
 156 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
 157 static irqreturn_t tlan_handle_interrupt(int, void *);
 158 static int      tlan_close(struct net_device *);
 159 static struct   net_device_stats *tlan_get_stats(struct net_device *);
 160 static void     tlan_set_multicast_list(struct net_device *);
 161 static int      tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 162 static int      tlan_probe1(struct pci_dev *pdev, long ioaddr,
 163                             int irq, int rev, const struct pci_device_id *ent);
 164 static void     tlan_tx_timeout(struct net_device *dev);
 165 static void     tlan_tx_timeout_work(struct work_struct *work);
 166 static int      tlan_init_one(struct pci_dev *pdev,
 167                               const struct pci_device_id *ent);
 168
 169 static u32      tlan_handle_tx_eof(struct net_device *, u16);
 170 static u32      tlan_handle_stat_overflow(struct net_device *, u16);
 171 static u32      tlan_handle_rx_eof(struct net_device *, u16);
 172 static u32      tlan_handle_dummy(struct net_device *, u16);
 173 static u32      tlan_handle_tx_eoc(struct net_device *, u16);
 174 static u32      tlan_handle_status_check(struct net_device *, u16);
 175 static u32      tlan_handle_rx_eoc(struct net_device *, u16);
 176
 177 static void     tlan_timer(unsigned long);
 178
 179 static void     tlan_reset_lists(struct net_device *);
 180 static void     tlan_free_lists(struct net_device *);
 181 static void     tlan_print_dio(u16);
 182 static void     tlan_print_list(struct tlan_list *, char *, int);
 183 static void     tlan_read_and_clear_stats(struct net_device *, int);
 184 static void     tlan_reset_adapter(struct net_device *);
 185 static void     tlan_finish_reset(struct net_device *);
 186 static void     tlan_set_mac(struct net_device *, int areg, char *mac);
 187
 188 static void     tlan_phy_print(struct net_device *);
 189 static void     tlan_phy_detect(struct net_device *);
 190 static void     tlan_phy_power_down(struct net_device *);
 191 static void     tlan_phy_power_up(struct net_device *);
 192 static void     tlan_phy_reset(struct net_device *);
 193 static void     tlan_phy_start_link(struct net_device *);
 194 static void     tlan_phy_finish_auto_neg(struct net_device *);
 195 #ifdef MONITOR
 196 static void     tlan_phy_monitor(struct net_device *);
 197 #endif
 198
 199 /*
 200   static int    tlan_phy_nop(struct net_device *);
 201   static int    tlan_phy_internal_check(struct net_device *);
 202   static int    tlan_phy_internal_service(struct net_device *);
 203   static int    tlan_phy_dp83840a_check(struct net_device *);
 204 */
 205
 206 static bool     tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 207 static void     tlan_mii_send_data(u16, u32, unsigned);
 208 static void     tlan_mii_sync(u16);
 209 static void     tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 210
 211 static void     tlan_ee_send_start(u16);
 212 static int      tlan_ee_send_byte(u16, u8, int);
 213 static void     tlan_ee_receive_byte(u16, u8 *, int);
 214 static int      tlan_ee_read_byte(struct net_device *, u8, u8 *);
 215
 216
 217 static inline void
 218 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
 219 {
 220         unsigned long addr = (unsigned long)skb;
 221         tag->buffer[9].address = addr;
 222         tag->buffer[8].address = upper_32_bits(addr);
 223 }
 224
 225 static inline struct sk_buff *
 226 tlan_get_skb(const struct tlan_list *tag)
 227 {
 228         unsigned long addr;
 229
 230         addr = tag->buffer[9].address;
 231         addr |= (tag->buffer[8].address << 16) << 16;
 232         return (struct sk_buff *) addr;
 233 }
 234
 235 static u32
 236 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
 237         NULL,
 238         tlan_handle_tx_eof,
 239         tlan_handle_stat_overflow,
 240         tlan_handle_rx_eof,
 241         tlan_handle_dummy,
 242         tlan_handle_tx_eoc,
 243         tlan_handle_status_check,
 244         tlan_handle_rx_eoc
 245 };
 246
 247 static inline void
 248 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
 249 {
 250         struct tlan_priv *priv = netdev_priv(dev);
 251         unsigned long flags = 0;
 252
 253         if (!in_irq())
 254                 spin_lock_irqsave(&priv->lock, flags);
 255         if (priv->timer.function != NULL &&
 256             priv->timer_type != TLAN_TIMER_ACTIVITY) {
 257                 if (!in_irq())
 258                         spin_unlock_irqrestore(&priv->lock, flags);
 259                 return;
 260         }
 261         priv->timer.function = tlan_timer;
 262         if (!in_irq())
 263                 spin_unlock_irqrestore(&priv->lock, flags);
 264
 265         priv->timer.data = (unsigned long) dev;
 266         priv->timer_set_at = jiffies;
 267         priv->timer_type = type;
 268         mod_timer(&priv->timer, jiffies + ticks);
 269
 270 }
 271
 272
 273 /*****************************************************************************
 274 ******************************************************************************
 275
 276 ThunderLAN driver primary functions
 277
 278 these functions are more or less common to all linux network drivers.
 279
 280 ******************************************************************************
 281 *****************************************************************************/
 282
 283
 284
 285
 286
 287 /***************************************************************
 288  *      tlan_remove_one
 289  *
 290  *      Returns:
 291  *              Nothing
 292  *      Parms:
 293  *              None
 294  *
 295  *      Goes through the TLanDevices list and frees the device
 296  *      structs and memory associated with each device (lists
 297  *      and buffers).  It also ureserves the IO port regions
 298  *      associated with this device.
 299  *
 300  **************************************************************/
 301
 302
 303 static void __devexit tlan_remove_one(struct pci_dev *pdev)
 304 {
 305         struct net_device *dev = pci_get_drvdata(pdev);
 306         struct tlan_priv        *priv = netdev_priv(dev);
 307
 308         unregister_netdev(dev);
 309
 310         if (priv->dma_storage) {
 311                 pci_free_consistent(priv->pci_dev,
 312                                     priv->dma_size, priv->dma_storage,
 313                                     priv->dma_storage_dma);
 314         }
 315
 316 #ifdef CONFIG_PCI
 317         pci_release_regions(pdev);
 318 #endif
 319
 320         free_netdev(dev);
 321
 322         pci_set_drvdata(pdev, NULL);
 323 }
 324
 325 static void tlan_start(struct net_device *dev)
 326 {
 327         tlan_reset_lists(dev);
 328         /* NOTE: It might not be necessary to read the stats before a
 329            reset if you don't care what the values are.
 330         */
 331         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 332         tlan_reset_adapter(dev);
 333         netif_wake_queue(dev);
 334 }
 335
 336 static void tlan_stop(struct net_device *dev)
 337 {
 338         struct tlan_priv *priv = netdev_priv(dev);
 339
 340         tlan_read_and_clear_stats(dev, TLAN_RECORD);
 341         outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 342         /* Reset and power down phy */
 343         tlan_reset_adapter(dev);
 344         if (priv->timer.function != NULL) {
 345                 del_timer_sync(&priv->timer);
 346                 priv->timer.function = NULL;
 347         }
 348 }
 349
 350 #ifdef CONFIG_PM
 351
 352 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
 353 {
 354         struct net_device *dev = pci_get_drvdata(pdev);
 355
 356         if (netif_running(dev))
 357                 tlan_stop(dev);
 358
 359         netif_device_detach(dev);
 360         pci_save_state(pdev);
 361         pci_disable_device(pdev);
 362         pci_wake_from_d3(pdev, false);
 363         pci_set_power_state(pdev, PCI_D3hot);
 364
 365         return 0;
 366 }
 367
 368 static int tlan_resume(struct pci_dev *pdev)
 369 {
 370         struct net_device *dev = pci_get_drvdata(pdev);
 371
 372         pci_set_power_state(pdev, PCI_D0);
 373         pci_restore_state(pdev);
 374         pci_enable_wake(pdev, 0, 0);
 375         netif_device_attach(dev);
 376
 377         if (netif_running(dev))
 378                 tlan_start(dev);
 379
 380         return 0;
 381 }
 382
 383 #else /* CONFIG_PM */
 384
 385 #define tlan_suspend   NULL
 386 #define tlan_resume    NULL
 387
 388 #endif /* CONFIG_PM */
 389
 390
 391 static struct pci_driver tlan_driver = {
 392         .name           = "tlan",
 393         .id_table       = tlan_pci_tbl,
 394         .probe          = tlan_init_one,
 395         .remove         = __devexit_p(tlan_remove_one),
 396         .suspend        = tlan_suspend,
 397         .resume         = tlan_resume,
 398 };
 399
 400 static int __init tlan_probe(void)
 401 {
 402         int rc = -ENODEV;
 403
 404         pr_info("%s", tlan_banner);
 405
 406         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 407
 408         /* Use new style PCI probing. Now the kernel will
 409            do most of this for us */
 410         rc = pci_register_driver(&tlan_driver);
 411
 412         if (rc != 0) {
 413                 pr_err("Could not register pci driver\n");
 414                 goto err_out_pci_free;
 415         }
 416
 417         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 418         tlan_eisa_probe();
 419
 420         pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 421                 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 422                 tlan_have_pci, tlan_have_eisa);
 423
 424         if (tlan_devices_installed == 0) {
 425                 rc = -ENODEV;
 426                 goto  err_out_pci_unreg;
 427         }
 428         return 0;
 429
 430 err_out_pci_unreg:
 431         pci_unregister_driver(&tlan_driver);
 432 err_out_pci_free:
 433         return rc;
 434 }
 435
 436
 437 static int __devinit tlan_init_one(struct pci_dev *pdev,
 438                                    const struct pci_device_id *ent)
 439 {
 440         return tlan_probe1(pdev, -1, -1, 0, ent);
 441 }
 442
 443
 444 /*
 445 ***************************************************************
 446 *       tlan_probe1
 447 *
 448 *       Returns:
 449 *               0 on success, error code on error
 450 *       Parms:
 451 *               none
 452 *
 453 *       The name is lower case to fit in with all the rest of
 454 *       the netcard_probe names.  This function looks for
 455 *       another TLan based adapter, setting it up with the
 456 *       allocated device struct if one is found.
 457 *       tlan_probe has been ported to the new net API and
 458 *       now allocates its own device structure. This function
 459 *       is also used by modules.
 460 *
 461 **************************************************************/
 462
 463 static int __devinit tlan_probe1(struct pci_dev *pdev,
 464                                  long ioaddr, int irq, int rev,
 465                                  const struct pci_device_id *ent)
 466 {
 467
 468         struct net_device  *dev;
 469         struct tlan_priv  *priv;
 470         u16                device_id;
 471         int                reg, rc = -ENODEV;
 472
 473 #ifdef CONFIG_PCI
 474         if (pdev) {
 475                 rc = pci_enable_device(pdev);
 476                 if (rc)
 477                         return rc;
 478
 479                 rc = pci_request_regions(pdev, tlan_signature);
 480                 if (rc) {
 481                         pr_err("Could not reserve IO regions\n");
 482                         goto err_out;
 483                 }
 484         }
 485 #endif  /*  CONFIG_PCI  */
 486
 487         dev = alloc_etherdev(sizeof(struct tlan_priv));
 488         if (dev == NULL) {
 489                 rc = -ENOMEM;
 490                 goto err_out_regions;
 491         }
 492         SET_NETDEV_DEV(dev, &pdev->dev);
 493
 494         priv = netdev_priv(dev);
 495
 496         priv->pci_dev = pdev;
 497         priv->dev = dev;
 498
 499         /* Is this a PCI device? */
 500         if (pdev) {
 501                 u32                pci_io_base = 0;
 502
 503                 priv->adapter = &board_info[ent->driver_data];
 504
 505                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 506                 if (rc) {
 507                         pr_err("No suitable PCI mapping available\n");
 508                         goto err_out_free_dev;
 509                 }
 510
 511                 for (reg = 0; reg <= 5; reg++) {
 512                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 513                                 pci_io_base = pci_resource_start(pdev, reg);
 514                                 TLAN_DBG(TLAN_DEBUG_GNRL,
 515                                          "IO mapping is available at %x.\n",
 516                                          pci_io_base);
 517                                 break;
 518                         }
 519                 }
 520                 if (!pci_io_base) {
 521                         pr_err("No IO mappings available\n");
 522                         rc = -EIO;
 523                         goto err_out_free_dev;
 524                 }
 525
 526                 dev->base_addr = pci_io_base;
 527                 dev->irq = pdev->irq;
 528                 priv->adapter_rev = pdev->revision;
 529                 pci_set_master(pdev);
 530                 pci_set_drvdata(pdev, dev);
 531
 532         } else  {     /* EISA card */
 533                 /* This is a hack. We need to know which board structure
 534                  * is suited for this adapter */
 535                 device_id = inw(ioaddr + EISA_ID2);
 536                 priv->is_eisa = 1;
 537                 if (device_id == 0x20F1) {
 538                         priv->adapter = &board_info[13]; /* NetFlex-3/E */
 539                         priv->adapter_rev = 23;         /* TLAN 2.3 */
 540                 } else {
 541                         priv->adapter = &board_info[14];
 542                         priv->adapter_rev = 10;         /* TLAN 1.0 */
 543                 }
 544                 dev->base_addr = ioaddr;
 545                 dev->irq = irq;
 546         }
 547
 548         /* Kernel parameters */
 549         if (dev->mem_start) {
 550                 priv->aui    = dev->mem_start & 0x01;
 551                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
 552                         : (dev->mem_start & 0x06) >> 1;
 553                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
 554                         : (dev->mem_start & 0x18) >> 3;
 555
 556                 if (priv->speed == 0x1)
 557                         priv->speed = TLAN_SPEED_10;
 558                 else if (priv->speed == 0x2)
 559                         priv->speed = TLAN_SPEED_100;
 560
 561                 debug = priv->debug = dev->mem_end;
 562         } else {
 563                 priv->aui    = aui[boards_found];
 564                 priv->speed  = speed[boards_found];
 565                 priv->duplex = duplex[boards_found];
 566                 priv->debug = debug;
 567         }
 568
 569         /* This will be used when we get an adapter error from
 570          * within our irq handler */
 571         INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
 572
 573         spin_lock_init(&priv->lock);
 574
 575         rc = tlan_init(dev);
 576         if (rc) {
 577                 pr_err("Could not set up device\n");
 578                 goto err_out_free_dev;
 579         }
 580
 581         rc = register_netdev(dev);
 582         if (rc) {
 583                 pr_err("Could not register device\n");
 584                 goto err_out_uninit;
 585         }
 586
 587
 588         tlan_devices_installed++;
 589         boards_found++;
 590
 591         /* pdev is NULL if this is an EISA device */
 592         if (pdev)
 593                 tlan_have_pci++;
 594         else {
 595                 priv->next_device = tlan_eisa_devices;
 596                 tlan_eisa_devices = dev;
 597                 tlan_have_eisa++;
 598         }
 599
 600         netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
 601                     (int)dev->irq,
 602                     (int)dev->base_addr,
 603                     priv->adapter->device_label,
 604                     priv->adapter_rev);
 605         return 0;
 606
 607 err_out_uninit:
 608         pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
 609                             priv->dma_storage_dma);
 610 err_out_free_dev:
 611         free_netdev(dev);
 612 err_out_regions:
 613 #ifdef CONFIG_PCI
 614         if (pdev)
 615                 pci_release_regions(pdev);
 616 #endif
 617 err_out:
 618         if (pdev)
 619                 pci_disable_device(pdev);
 620         return rc;
 621 }
 622
 623
 624 static void tlan_eisa_cleanup(void)
 625 {
 626         struct net_device *dev;
 627         struct tlan_priv *priv;
 628
 629         while (tlan_have_eisa) {
 630                 dev = tlan_eisa_devices;
 631                 priv = netdev_priv(dev);
 632                 if (priv->dma_storage) {
 633                         pci_free_consistent(priv->pci_dev, priv->dma_size,
 634                                             priv->dma_storage,
 635                                             priv->dma_storage_dma);
 636                 }
 637                 release_region(dev->base_addr, 0x10);
 638                 unregister_netdev(dev);
 639                 tlan_eisa_devices = priv->next_device;
 640                 free_netdev(dev);
 641                 tlan_have_eisa--;
 642         }
 643 }
 644
 645
 646 static void __exit tlan_exit(void)
 647 {
 648         pci_unregister_driver(&tlan_driver);
 649
 650         if (tlan_have_eisa)
 651                 tlan_eisa_cleanup();
 652
 653 }
 654
 655
 656 /* Module loading/unloading */
 657 module_init(tlan_probe);
 658 module_exit(tlan_exit);
 659
 660
 661
 662 /**************************************************************
 663  *      tlan_eisa_probe
 664  *
 665  *      Returns: 0 on success, 1 otherwise
 666  *
 667  *      Parms:   None
 668  *
 669  *
 670  *      This functions probes for EISA devices and calls
 671  *      TLan_probe1 when one is found.
 672  *
 673  *************************************************************/
 674
 675 static void  __init tlan_eisa_probe(void)
 676 {
 677         long    ioaddr;
 678         int     rc = -ENODEV;
 679         int     irq;
 680         u16     device_id;
 681
 682         if (!EISA_bus) {
 683                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 684                 return;
 685         }
 686
 687         /* Loop through all slots of the EISA bus */
 688         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 689
 690                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 691                          (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
 692                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 693                          (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
 694
 695
 696                 TLAN_DBG(TLAN_DEBUG_PROBE,
 697                          "Probing for EISA adapter at IO: 0x%4x : ",
 698                          (int) ioaddr);
 699                 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
 700                         goto out;
 701
 702                 if (inw(ioaddr + EISA_ID) != 0x110E) {
 703                         release_region(ioaddr, 0x10);
 704                         goto out;
 705                 }
 706
 707                 device_id = inw(ioaddr + EISA_ID2);
 708                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
 709                         release_region(ioaddr, 0x10);
 710                         goto out;
 711                 }
 712
 713                 /* check if adapter is enabled */
 714                 if (inb(ioaddr + EISA_CR) != 0x1) {
 715                         release_region(ioaddr, 0x10);
 716                         goto out2;
 717                 }
 718
 719                 if (debug == 0x10)
 720                         pr_info("Found one\n");
 721
 722
 723                 /* Get irq from board */
 724                 switch (inb(ioaddr + 0xcc0)) {
 725                 case(0x10):
 726                         irq = 5;
 727                         break;
 728                 case(0x20):
 729                         irq = 9;
 730                         break;
 731                 case(0x40):
 732                         irq = 10;
 733                         break;
 734                 case(0x80):
 735                         irq = 11;
 736                         break;
 737                 default:
 738                         goto out;
 739                 }
 740
 741
 742                 /* Setup the newly found eisa adapter */
 743                 rc = tlan_probe1(NULL, ioaddr, irq,
 744                                  12, NULL);
 745                 continue;
 746
 747 out:
 748                 if (debug == 0x10)
 749                         pr_info("None found\n");
 750                 continue;
 751
 752 out2:
 753                 if (debug == 0x10)
 754                         pr_info("Card found but it is not enabled, skipping\n");
 755                 continue;
 756
 757         }
 758
 759 }
 760
 761 #ifdef CONFIG_NET_POLL_CONTROLLER
 762 static void tlan_poll(struct net_device *dev)
 763 {
 764         disable_irq(dev->irq);
 765         tlan_handle_interrupt(dev->irq, dev);
 766         enable_irq(dev->irq);
 767 }
 768 #endif
 769
 770 static const struct net_device_ops tlan_netdev_ops = {
 771         .ndo_open               = tlan_open,
 772         .ndo_stop               = tlan_close,
 773         .ndo_start_xmit         = tlan_start_tx,
 774         .ndo_tx_timeout         = tlan_tx_timeout,
 775         .ndo_get_stats          = tlan_get_stats,
 776         .ndo_set_rx_mode        = tlan_set_multicast_list,
 777         .ndo_do_ioctl           = tlan_ioctl,
 778         .ndo_change_mtu         = eth_change_mtu,
 779         .ndo_set_mac_address    = eth_mac_addr,
 780         .ndo_validate_addr      = eth_validate_addr,
 781 #ifdef CONFIG_NET_POLL_CONTROLLER
 782         .ndo_poll_controller     = tlan_poll,
 783 #endif
 784 };
 785
 786
 787
 788 /***************************************************************
 789  *      tlan_init
 790  *
 791  *      Returns:
 792  *              0 on success, error code otherwise.
 793  *      Parms:
 794  *              dev     The structure of the device to be
 795  *                      init'ed.
 796  *
 797  *      This function completes the initialization of the
 798  *      device structure and driver.  It reserves the IO
 799  *      addresses, allocates memory for the lists and bounce
 800  *      buffers, retrieves the MAC address from the eeprom
 801  *      and assignes the device's methods.
 802  *
 803  **************************************************************/
 804
 805 static int tlan_init(struct net_device *dev)
 806 {
 807         int             dma_size;
 808         int             err;
 809         int             i;
 810         struct tlan_priv        *priv;
 811
 812         priv = netdev_priv(dev);
 813
 814         dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
 815                 * (sizeof(struct tlan_list));
 816         priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
 817                                                  dma_size,
 818                                                  &priv->dma_storage_dma);
 819         priv->dma_size = dma_size;
 820
 821         if (priv->dma_storage == NULL) {
 822                 pr_err("Could not allocate lists and buffers for %s\n",
 823                        dev->name);
 824                 return -ENOMEM;
 825         }
 826         memset(priv->dma_storage, 0, dma_size);
 827         priv->rx_list = (struct tlan_list *)
 828                 ALIGN((unsigned long)priv->dma_storage, 8);
 829         priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
 830         priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
 831         priv->tx_list_dma =
 832                 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
 833
 834         err = 0;
 835         for (i = 0;  i < 6 ; i++)
 836                 err |= tlan_ee_read_byte(dev,
 837                                          (u8) priv->adapter->addr_ofs + i,
 838                                          (u8 *) &dev->dev_addr[i]);
 839         if (err) {
 840                 pr_err("%s: Error reading MAC from eeprom: %d\n",
 841                        dev->name, err);
 842         }
 843         dev->addr_len = 6;
 844
 845         netif_carrier_off(dev);
 846
 847         /* Device methods */
 848         dev->netdev_ops = &tlan_netdev_ops;
 849         dev->watchdog_timeo = TX_TIMEOUT;
 850
 851         return 0;
 852
 853 }
 854
 855
 856
 857
 858 /***************************************************************
 859  *      tlan_open
 860  *
 861  *      Returns:
 862  *              0 on success, error code otherwise.
 863  *      Parms:
 864  *              dev     Structure of device to be opened.
 865  *
 866  *      This routine puts the driver and TLAN adapter in a
 867  *      state where it is ready to send and receive packets.
 868  *      It allocates the IRQ, resets and brings the adapter
 869  *      out of reset, and allows interrupts.  It also delays
 870  *      the startup for autonegotiation or sends a Rx GO
 871  *      command to the adapter, as appropriate.
 872  *
 873  **************************************************************/
 874
 875 static int tlan_open(struct net_device *dev)
 876 {
 877         struct tlan_priv        *priv = netdev_priv(dev);
 878         int             err;
 879
 880         priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
 881         err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
 882                           dev->name, dev);
 883
 884         if (err) {
 885                 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
 886                            dev->irq);
 887                 return err;
 888         }
 889
 890         init_timer(&priv->timer);
 891
 892         tlan_start(dev);
 893
 894         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
 895                  dev->name, priv->tlan_rev);
 896
 897         return 0;
 898
 899 }
 900
 901
 902
 903 /**************************************************************
 904  *      tlan_ioctl
 905  *
 906  *      Returns:
 907  *              0 on success, error code otherwise
 908  *      Params:
 909  *              dev     structure of device to receive ioctl.
 910  *
 911  *              rq      ifreq structure to hold userspace data.
 912  *
 913  *              cmd     ioctl command.
 914  *
 915  *
 916  *************************************************************/
 917
 918 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 919 {
 920         struct tlan_priv *priv = netdev_priv(dev);
 921         struct mii_ioctl_data *data = if_mii(rq);
 922         u32 phy   = priv->phy[priv->phy_num];
 923
 924         if (!priv->phy_online)
 925                 return -EAGAIN;
 926
 927         switch (cmd) {
 928         case SIOCGMIIPHY:               /* get address of MII PHY in use. */
 929                 data->phy_id = phy;
 930
 931
 932         case SIOCGMIIREG:               /* read MII PHY register. */
 933                 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
 934                                   data->reg_num & 0x1f, &data->val_out);
 935                 return 0;
 936
 937
 938         case SIOCSMIIREG:               /* write MII PHY register. */
 939                 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
 940                                    data->reg_num & 0x1f, data->val_in);
 941                 return 0;
 942         default:
 943                 return -EOPNOTSUPP;
 944         }
 945 }
 946
 947
 948 /***************************************************************
 949  *      tlan_tx_timeout
 950  *
 951  *      Returns: nothing
 952  *
 953  *      Params:
 954  *              dev     structure of device which timed out
 955  *                      during transmit.
 956  *
 957  **************************************************************/
 958
 959 static void tlan_tx_timeout(struct net_device *dev)
 960 {
 961
 962         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
 963
 964         /* Ok so we timed out, lets see what we can do about it...*/
 965         tlan_free_lists(dev);
 966         tlan_reset_lists(dev);
 967         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 968         tlan_reset_adapter(dev);
 969         dev->trans_start = jiffies; /* prevent tx timeout */
 970         netif_wake_queue(dev);
 971
 972 }
 973
 974
 975 /***************************************************************
 976  *      tlan_tx_timeout_work
 977  *
 978  *      Returns: nothing
 979  *
 980  *      Params:
 981  *              work    work item of device which timed out
 982  *
 983  **************************************************************/
 984
 985 static void tlan_tx_timeout_work(struct work_struct *work)
 986 {
 987         struct tlan_priv        *priv =
 988                 container_of(work, struct tlan_priv, tlan_tqueue);
 989
 990         tlan_tx_timeout(priv->dev);
 991 }
 992
 993
 994
 995 /***************************************************************
 996  *      tlan_start_tx
 997  *
 998  *      Returns:
 999  *              0 on success, non-zero on failure.
1000  *      Parms:
1001  *              skb     A pointer to the sk_buff containing the
1002  *                      frame to be sent.
1003  *              dev     The device to send the data on.
1004  *
1005  *      This function adds a frame to the Tx list to be sent
1006  *      ASAP.  First it verifies that the adapter is ready and
1007  *      there is room in the queue.  Then it sets up the next
1008  *      available list, copies the frame to the corresponding
1009  *      buffer.  If the adapter Tx channel is idle, it gives
1010  *      the adapter a Tx Go command on the list, otherwise it
1011  *      sets the forward address of the previous list to point
1012  *      to this one.  Then it frees the sk_buff.
1013  *
1014  **************************************************************/
1015
1016 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1017 {
1018         struct tlan_priv *priv = netdev_priv(dev);
1019         dma_addr_t      tail_list_phys;
1020         struct tlan_list        *tail_list;
1021         unsigned long   flags;
1022         unsigned int    txlen;
1023
1024         if (!priv->phy_online) {
1025                 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1026                          dev->name);
1027                 dev_kfree_skb_any(skb);
1028                 return NETDEV_TX_OK;
1029         }
1030
1031         if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1032                 return NETDEV_TX_OK;
1033         txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1034
1035         tail_list = priv->tx_list + priv->tx_tail;
1036         tail_list_phys =
1037                 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1038
1039         if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1040                 TLAN_DBG(TLAN_DEBUG_TX,
1041                          "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1042                          dev->name, priv->tx_head, priv->tx_tail);
1043                 netif_stop_queue(dev);
1044                 priv->tx_busy_count++;
1045                 return NETDEV_TX_BUSY;
1046         }
1047
1048         tail_list->forward = 0;
1049
1050         tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1051                                                       skb->data, txlen,
1052                                                       PCI_DMA_TODEVICE);
1053         tlan_store_skb(tail_list, skb);
1054
1055         tail_list->frame_size = (u16) txlen;
1056         tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1057         tail_list->buffer[1].count = 0;
1058         tail_list->buffer[1].address = 0;
1059
1060         spin_lock_irqsave(&priv->lock, flags);
1061         tail_list->c_stat = TLAN_CSTAT_READY;
1062         if (!priv->tx_in_progress) {
1063                 priv->tx_in_progress = 1;
1064                 TLAN_DBG(TLAN_DEBUG_TX,
1065                          "TRANSMIT:  Starting TX on buffer %d\n",
1066                          priv->tx_tail);
1067                 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1068                 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1069         } else {
1070                 TLAN_DBG(TLAN_DEBUG_TX,
1071                          "TRANSMIT:  Adding buffer %d to TX channel\n",
1072                          priv->tx_tail);
1073                 if (priv->tx_tail == 0) {
1074                         (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1075                                 = tail_list_phys;
1076                 } else {
1077                         (priv->tx_list + (priv->tx_tail - 1))->forward
1078                                 = tail_list_phys;
1079                 }
1080         }
1081         spin_unlock_irqrestore(&priv->lock, flags);
1082
1083         CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1084
1085         return NETDEV_TX_OK;
1086
1087 }
1088
1089
1090
1091
1092 /***************************************************************
1093  *      tlan_handle_interrupt
1094  *
1095  *      Returns:
1096  *              Nothing
1097  *      Parms:
1098  *              irq     The line on which the interrupt
1099  *                      occurred.
1100  *              dev_id  A pointer to the device assigned to
1101  *                      this irq line.
1102  *
1103  *      This function handles an interrupt generated by its
1104  *      assigned TLAN adapter.  The function deactivates
1105  *      interrupts on its adapter, records the type of
1106  *      interrupt, executes the appropriate subhandler, and
1107  *      acknowdges the interrupt to the adapter (thus
1108  *      re-enabling adapter interrupts.
1109  *
1110  **************************************************************/
1111
1112 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1113 {
1114         struct net_device       *dev = dev_id;
1115         struct tlan_priv *priv = netdev_priv(dev);
1116         u16             host_int;
1117         u16             type;
1118
1119         spin_lock(&priv->lock);
1120
1121         host_int = inw(dev->base_addr + TLAN_HOST_INT);
1122         type = (host_int & TLAN_HI_IT_MASK) >> 2;
1123         if (type) {
1124                 u32     ack;
1125                 u32     host_cmd;
1126
1127                 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1128                 ack = tlan_int_vector[type](dev, host_int);
1129
1130                 if (ack) {
1131                         host_cmd = TLAN_HC_ACK | ack | (type << 18);
1132                         outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1133                 }
1134         }
1135
1136         spin_unlock(&priv->lock);
1137
1138         return IRQ_RETVAL(type);
1139 }
1140
1141
1142
1143
1144 /***************************************************************
1145  *      tlan_close
1146  *
1147  *      Returns:
1148  *              An error code.
1149  *      Parms:
1150  *              dev     The device structure of the device to
1151  *                      close.
1152  *
1153  *      This function shuts down the adapter.  It records any
1154  *      stats, puts the adapter into reset state, deactivates
1155  *      its time as needed, and frees the irq it is using.
1156  *
1157  **************************************************************/
1158
1159 static int tlan_close(struct net_device *dev)
1160 {
1161         struct tlan_priv *priv = netdev_priv(dev);
1162
1163         priv->neg_be_verbose = 0;
1164         tlan_stop(dev);
1165
1166         free_irq(dev->irq, dev);
1167         tlan_free_lists(dev);
1168         TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1169
1170         return 0;
1171
1172 }
1173
1174
1175
1176
1177 /***************************************************************
1178  *      tlan_get_stats
1179  *
1180  *      Returns:
1181  *              A pointer to the device's statistics structure.
1182  *      Parms:
1183  *              dev     The device structure to return the
1184  *                      stats for.
1185  *
1186  *      This function updates the devices statistics by reading
1187  *      the TLAN chip's onboard registers.  Then it returns the
1188  *      address of the statistics structure.
1189  *
1190  **************************************************************/
1191
1192 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1193 {
1194         struct tlan_priv        *priv = netdev_priv(dev);
1195         int i;
1196
1197         /* Should only read stats if open ? */
1198         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1199
1200         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1201                  priv->rx_eoc_count);
1202         TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1203                  priv->tx_busy_count);
1204         if (debug & TLAN_DEBUG_GNRL) {
1205                 tlan_print_dio(dev->base_addr);
1206                 tlan_phy_print(dev);
1207         }
1208         if (debug & TLAN_DEBUG_LIST) {
1209                 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1210                         tlan_print_list(priv->rx_list + i, "RX", i);
1211                 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1212                         tlan_print_list(priv->tx_list + i, "TX", i);
1213         }
1214
1215         return &dev->stats;
1216
1217 }
1218
1219
1220
1221
1222 /***************************************************************
1223  *      tlan_set_multicast_list
1224  *
1225  *      Returns:
1226  *              Nothing
1227  *      Parms:
1228  *              dev     The device structure to set the
1229  *                      multicast list for.
1230  *
1231  *      This function sets the TLAN adaptor to various receive
1232  *      modes.  If the IFF_PROMISC flag is set, promiscuous
1233  *      mode is acitviated.  Otherwise, promiscuous mode is
1234  *      turned off.  If the IFF_ALLMULTI flag is set, then
1235  *      the hash table is set to receive all group addresses.
1236  *      Otherwise, the first three multicast addresses are
1237  *      stored in AREG_1-3, and the rest are selected via the
1238  *      hash table, as necessary.
1239  *
1240  **************************************************************/
1241
1242 static void tlan_set_multicast_list(struct net_device *dev)
1243 {
1244         struct netdev_hw_addr *ha;
1245         u32                     hash1 = 0;
1246         u32                     hash2 = 0;
1247         int                     i;
1248         u32                     offset;
1249         u8                      tmp;
1250
1251         if (dev->flags & IFF_PROMISC) {
1252                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1253                 tlan_dio_write8(dev->base_addr,
1254                                 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1255         } else {
1256                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1257                 tlan_dio_write8(dev->base_addr,
1258                                 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1259                 if (dev->flags & IFF_ALLMULTI) {
1260                         for (i = 0; i < 3; i++)
1261                                 tlan_set_mac(dev, i + 1, NULL);
1262                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1263                                          0xffffffff);
1264                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1265                                          0xffffffff);
1266                 } else {
1267                         i = 0;
1268                         netdev_for_each_mc_addr(ha, dev) {
1269                                 if (i < 3) {
1270                                         tlan_set_mac(dev, i + 1,
1271                                                      (char *) &ha->addr);
1272                                 } else {
1273                                         offset =
1274                                                 tlan_hash_func((u8 *)&ha->addr);
1275                                         if (offset < 32)
1276                                                 hash1 |= (1 << offset);
1277                                         else
1278                                                 hash2 |= (1 << (offset - 32));
1279                                 }
1280                                 i++;
1281                         }
1282                         for ( ; i < 3; i++)
1283                                 tlan_set_mac(dev, i + 1, NULL);
1284                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1285                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1286                 }
1287         }
1288
1289 }
1290
1291
1292
1293 /*****************************************************************************
1294 ******************************************************************************
1295
1296 ThunderLAN driver interrupt vectors and table
1297
1298 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1299 Programmer's Guide" for more informations on handling interrupts
1300 generated by TLAN based adapters.
1301
1302 ******************************************************************************
1303 *****************************************************************************/
1304
1305
1306
1307
1308 /***************************************************************
1309  *      tlan_handle_tx_eof
1310  *
1311  *      Returns:
1312  *              1
1313  *      Parms:
1314  *              dev             Device assigned the IRQ that was
1315  *                              raised.
1316  *              host_int        The contents of the HOST_INT
1317  *                              port.
1318  *
1319  *      This function handles Tx EOF interrupts which are raised
1320  *      by the adapter when it has completed sending the
1321  *      contents of a buffer.  If detemines which list/buffer
1322  *      was completed and resets it.  If the buffer was the last
1323  *      in the channel (EOC), then the function checks to see if
1324  *      another buffer is ready to send, and if so, sends a Tx
1325  *      Go command.  Finally, the driver activates/continues the
1326  *      activity LED.
1327  *
1328  **************************************************************/
1329
1330 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1331 {
1332         struct tlan_priv        *priv = netdev_priv(dev);
1333         int             eoc = 0;
1334         struct tlan_list        *head_list;
1335         dma_addr_t      head_list_phys;
1336         u32             ack = 0;
1337         u16             tmp_c_stat;
1338
1339         TLAN_DBG(TLAN_DEBUG_TX,
1340                  "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1341                  priv->tx_head, priv->tx_tail);
1342         head_list = priv->tx_list + priv->tx_head;
1343
1344         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1345                && (ack < 255)) {
1346                 struct sk_buff *skb = tlan_get_skb(head_list);
1347
1348                 ack++;
1349                 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1350                                  max(skb->len,
1351                                      (unsigned int)TLAN_MIN_FRAME_SIZE),
1352                                  PCI_DMA_TODEVICE);
1353                 dev_kfree_skb_any(skb);
1354                 head_list->buffer[8].address = 0;
1355                 head_list->buffer[9].address = 0;
1356
1357                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1358                         eoc = 1;
1359
1360                 dev->stats.tx_bytes += head_list->frame_size;
1361
1362                 head_list->c_stat = TLAN_CSTAT_UNUSED;
1363                 netif_start_queue(dev);
1364                 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1365                 head_list = priv->tx_list + priv->tx_head;
1366         }
1367
1368         if (!ack)
1369                 netdev_info(dev,
1370                             "Received interrupt for uncompleted TX frame\n");
1371
1372         if (eoc) {
1373                 TLAN_DBG(TLAN_DEBUG_TX,
1374                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1375                          priv->tx_head, priv->tx_tail);
1376                 head_list = priv->tx_list + priv->tx_head;
1377                 head_list_phys = priv->tx_list_dma
1378                         + sizeof(struct tlan_list)*priv->tx_head;
1379                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1380                     == TLAN_CSTAT_READY) {
1381                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1382                         ack |= TLAN_HC_GO;
1383                 } else {
1384                         priv->tx_in_progress = 0;
1385                 }
1386         }
1387
1388         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1389                 tlan_dio_write8(dev->base_addr,
1390                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1391                 if (priv->timer.function == NULL) {
1392                         priv->timer.function = tlan_timer;
1393                         priv->timer.data = (unsigned long) dev;
1394                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1395                         priv->timer_set_at = jiffies;
1396                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1397                         add_timer(&priv->timer);
1398                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1399                         priv->timer_set_at = jiffies;
1400                 }
1401         }
1402
1403         return ack;
1404
1405 }
1406
1407
1408
1409
1410 /***************************************************************
1411  *      TLan_HandleStatOverflow
1412  *
1413  *      Returns:
1414  *              1
1415  *      Parms:
1416  *              dev             Device assigned the IRQ that was
1417  *                              raised.
1418  *              host_int        The contents of the HOST_INT
1419  *                              port.
1420  *
1421  *      This function handles the Statistics Overflow interrupt
1422  *      which means that one or more of the TLAN statistics
1423  *      registers has reached 1/2 capacity and needs to be read.
1424  *
1425  **************************************************************/
1426
1427 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1428 {
1429         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1430
1431         return 1;
1432
1433 }
1434
1435
1436
1437
1438 /***************************************************************
1439  *      TLan_HandleRxEOF
1440  *
1441  *      Returns:
1442  *              1
1443  *      Parms:
1444  *              dev             Device assigned the IRQ that was
1445  *                              raised.
1446  *              host_int        The contents of the HOST_INT
1447  *                              port.
1448  *
1449  *      This function handles the Rx EOF interrupt which
1450  *      indicates a frame has been received by the adapter from
1451  *      the net and the frame has been transferred to memory.
1452  *      The function determines the bounce buffer the frame has
1453  *      been loaded into, creates a new sk_buff big enough to
1454  *      hold the frame, and sends it to protocol stack.  It
1455  *      then resets the used buffer and appends it to the end
1456  *      of the list.  If the frame was the last in the Rx
1457  *      channel (EOC), the function restarts the receive channel
1458  *      by sending an Rx Go command to the adapter.  Then it
1459  *      activates/continues the activity LED.
1460  *
1461  **************************************************************/
1462
1463 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1464 {
1465         struct tlan_priv        *priv = netdev_priv(dev);
1466         u32             ack = 0;
1467         int             eoc = 0;
1468         struct tlan_list        *head_list;
1469         struct sk_buff  *skb;
1470         struct tlan_list        *tail_list;
1471         u16             tmp_c_stat;
1472         dma_addr_t      head_list_phys;
1473
1474         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1475                  priv->rx_head, priv->rx_tail);
1476         head_list = priv->rx_list + priv->rx_head;
1477         head_list_phys =
1478                 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1479
1480         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1481                && (ack < 255)) {
1482                 dma_addr_t frame_dma = head_list->buffer[0].address;
1483                 u32 frame_size = head_list->frame_size;
1484                 struct sk_buff *new_skb;
1485
1486                 ack++;
1487                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1488                         eoc = 1;
1489
1490                 new_skb = netdev_alloc_skb_ip_align(dev,
1491                                                     TLAN_MAX_FRAME_SIZE + 5);
1492                 if (!new_skb)
1493                         goto drop_and_reuse;
1494
1495                 skb = tlan_get_skb(head_list);
1496                 pci_unmap_single(priv->pci_dev, frame_dma,
1497                                  TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1498                 skb_put(skb, frame_size);
1499
1500                 dev->stats.rx_bytes += frame_size;
1501
1502                 skb->protocol = eth_type_trans(skb, dev);
1503                 netif_rx(skb);
1504
1505                 head_list->buffer[0].address =
1506                         pci_map_single(priv->pci_dev, new_skb->data,
1507                                        TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1508
1509                 tlan_store_skb(head_list, new_skb);
1510 drop_and_reuse:
1511                 head_list->forward = 0;
1512                 head_list->c_stat = 0;
1513                 tail_list = priv->rx_list + priv->rx_tail;
1514                 tail_list->forward = head_list_phys;
1515
1516                 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1517                 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1518                 head_list = priv->rx_list + priv->rx_head;
1519                 head_list_phys = priv->rx_list_dma
1520                         + sizeof(struct tlan_list)*priv->rx_head;
1521         }
1522
1523         if (!ack)
1524                 netdev_info(dev,
1525                             "Received interrupt for uncompleted RX frame\n");
1526
1527
1528         if (eoc) {
1529                 TLAN_DBG(TLAN_DEBUG_RX,
1530                          "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1531                          priv->rx_head, priv->rx_tail);
1532                 head_list = priv->rx_list + priv->rx_head;
1533                 head_list_phys = priv->rx_list_dma
1534                         + sizeof(struct tlan_list)*priv->rx_head;
1535                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1536                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1537                 priv->rx_eoc_count++;
1538         }
1539
1540         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1541                 tlan_dio_write8(dev->base_addr,
1542                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1543                 if (priv->timer.function == NULL)  {
1544                         priv->timer.function = tlan_timer;
1545                         priv->timer.data = (unsigned long) dev;
1546                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1547                         priv->timer_set_at = jiffies;
1548                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1549                         add_timer(&priv->timer);
1550                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1551                         priv->timer_set_at = jiffies;
1552                 }
1553         }
1554
1555         return ack;
1556
1557 }
1558
1559
1560
1561
1562 /***************************************************************
1563  *      tlan_handle_dummy
1564  *
1565  *      Returns:
1566  *              1
1567  *      Parms:
1568  *              dev             Device assigned the IRQ that was
1569  *                              raised.
1570  *              host_int        The contents of the HOST_INT
1571  *                              port.
1572  *
1573  *      This function handles the Dummy interrupt, which is
1574  *      raised whenever a test interrupt is generated by setting
1575  *      the Req_Int bit of HOST_CMD to 1.
1576  *
1577  **************************************************************/
1578
1579 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1580 {
1581         netdev_info(dev, "Test interrupt\n");
1582         return 1;
1583
1584 }
1585
1586
1587
1588
1589 /***************************************************************
1590  *      tlan_handle_tx_eoc
1591  *
1592  *      Returns:
1593  *              1
1594  *      Parms:
1595  *              dev             Device assigned the IRQ that was
1596  *                              raised.
1597  *              host_int        The contents of the HOST_INT
1598  *                              port.
1599  *
1600  *      This driver is structured to determine EOC occurrences by
1601  *      reading the CSTAT member of the list structure.  Tx EOC
1602  *      interrupts are disabled via the DIO INTDIS register.
1603  *      However, TLAN chips before revision 3.0 didn't have this
1604  *      functionality, so process EOC events if this is the
1605  *      case.
1606  *
1607  **************************************************************/
1608
1609 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1610 {
1611         struct tlan_priv        *priv = netdev_priv(dev);
1612         struct tlan_list                *head_list;
1613         dma_addr_t              head_list_phys;
1614         u32                     ack = 1;
1615
1616         host_int = 0;
1617         if (priv->tlan_rev < 0x30) {
1618                 TLAN_DBG(TLAN_DEBUG_TX,
1619                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1620                          priv->tx_head, priv->tx_tail);
1621                 head_list = priv->tx_list + priv->tx_head;
1622                 head_list_phys = priv->tx_list_dma
1623                         + sizeof(struct tlan_list)*priv->tx_head;
1624                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1625                     == TLAN_CSTAT_READY) {
1626                         netif_stop_queue(dev);
1627                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1628                         ack |= TLAN_HC_GO;
1629                 } else {
1630                         priv->tx_in_progress = 0;
1631                 }
1632         }
1633
1634         return ack;
1635
1636 }
1637
1638
1639
1640
1641 /***************************************************************
1642  *      tlan_handle_status_check
1643  *
1644  *      Returns:
1645  *              0 if Adapter check, 1 if Network Status check.
1646  *      Parms:
1647  *              dev             Device assigned the IRQ that was
1648  *                              raised.
1649  *              host_int        The contents of the HOST_INT
1650  *                              port.
1651  *
1652  *      This function handles Adapter Check/Network Status
1653  *      interrupts generated by the adapter.  It checks the
1654  *      vector in the HOST_INT register to determine if it is
1655  *      an Adapter Check interrupt.  If so, it resets the
1656  *      adapter.  Otherwise it clears the status registers
1657  *      and services the PHY.
1658  *
1659  **************************************************************/
1660
1661 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1662 {
1663         struct tlan_priv        *priv = netdev_priv(dev);
1664         u32             ack;
1665         u32             error;
1666         u8              net_sts;
1667         u32             phy;
1668         u16             tlphy_ctl;
1669         u16             tlphy_sts;
1670
1671         ack = 1;
1672         if (host_int & TLAN_HI_IV_MASK) {
1673                 netif_stop_queue(dev);
1674                 error = inl(dev->base_addr + TLAN_CH_PARM);
1675                 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1676                 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1677                 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1678
1679                 schedule_work(&priv->tlan_tqueue);
1680
1681                 netif_wake_queue(dev);
1682                 ack = 0;
1683         } else {
1684                 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1685                 phy = priv->phy[priv->phy_num];
1686
1687                 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1688                 if (net_sts) {
1689                         tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1690                         TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1691                                  dev->name, (unsigned) net_sts);
1692                 }
1693                 if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1694                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1695                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1696                         if (!(tlphy_sts & TLAN_TS_POLOK) &&
1697                             !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1698                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1699                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1700                                                    tlphy_ctl);
1701                         } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1702                                    (tlphy_ctl & TLAN_TC_SWAPOL)) {
1703                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1704                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1705                                                    tlphy_ctl);
1706                         }
1707
1708                         if (debug)
1709                                 tlan_phy_print(dev);
1710                 }
1711         }
1712
1713         return ack;
1714
1715 }
1716
1717
1718
1719
1720 /***************************************************************
1721  *      tlan_handle_rx_eoc
1722  *
1723  *      Returns:
1724  *              1
1725  *      Parms:
1726  *              dev             Device assigned the IRQ that was
1727  *                              raised.
1728  *              host_int        The contents of the HOST_INT
1729  *                              port.
1730  *
1731  *      This driver is structured to determine EOC occurrences by
1732  *      reading the CSTAT member of the list structure.  Rx EOC
1733  *      interrupts are disabled via the DIO INTDIS register.
1734  *      However, TLAN chips before revision 3.0 didn't have this
1735  *      CSTAT member or a INTDIS register, so if this chip is
1736  *      pre-3.0, process EOC interrupts normally.
1737  *
1738  **************************************************************/
1739
1740 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1741 {
1742         struct tlan_priv        *priv = netdev_priv(dev);
1743         dma_addr_t      head_list_phys;
1744         u32             ack = 1;
1745
1746         if (priv->tlan_rev < 0x30) {
1747                 TLAN_DBG(TLAN_DEBUG_RX,
1748                          "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1749                          priv->rx_head, priv->rx_tail);
1750                 head_list_phys = priv->rx_list_dma
1751                         + sizeof(struct tlan_list)*priv->rx_head;
1752                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1753                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1754                 priv->rx_eoc_count++;
1755         }
1756
1757         return ack;
1758
1759 }
1760
1761
1762
1763
1764 /*****************************************************************************
1765 ******************************************************************************
1766
1767 ThunderLAN driver timer function
1768
1769 ******************************************************************************
1770 *****************************************************************************/
1771
1772
1773 /***************************************************************
1774  *      tlan_timer
1775  *
1776  *      Returns:
1777  *              Nothing
1778  *      Parms:
1779  *              data    A value given to add timer when
1780  *                      add_timer was called.
1781  *
1782  *      This function handles timed functionality for the
1783  *      TLAN driver.  The two current timer uses are for
1784  *      delaying for autonegotionation and driving the ACT LED.
1785  *      -       Autonegotiation requires being allowed about
1786  *              2 1/2 seconds before attempting to transmit a
1787  *              packet.  It would be a very bad thing to hang
1788  *              the kernel this long, so the driver doesn't
1789  *              allow transmission 'til after this time, for
1790  *              certain PHYs.  It would be much nicer if all
1791  *              PHYs were interrupt-capable like the internal
1792  *              PHY.
1793  *      -       The ACT LED, which shows adapter activity, is
1794  *              driven by the driver, and so must be left on
1795  *              for a short period to power up the LED so it
1796  *              can be seen.  This delay can be changed by
1797  *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1798  *              if desired.  100 ms  produces a slightly
1799  *              sluggish response.
1800  *
1801  **************************************************************/
1802
1803 static void tlan_timer(unsigned long data)
1804 {
1805         struct net_device       *dev = (struct net_device *) data;
1806         struct tlan_priv        *priv = netdev_priv(dev);
1807         u32             elapsed;
1808         unsigned long   flags = 0;
1809
1810         priv->timer.function = NULL;
1811
1812         switch (priv->timer_type) {
1813 #ifdef MONITOR
1814         case TLAN_TIMER_LINK_BEAT:
1815                 tlan_phy_monitor(dev);
1816                 break;
1817 #endif
1818         case TLAN_TIMER_PHY_PDOWN:
1819                 tlan_phy_power_down(dev);
1820                 break;
1821         case TLAN_TIMER_PHY_PUP:
1822                 tlan_phy_power_up(dev);
1823                 break;
1824         case TLAN_TIMER_PHY_RESET:
1825                 tlan_phy_reset(dev);
1826                 break;
1827         case TLAN_TIMER_PHY_START_LINK:
1828                 tlan_phy_start_link(dev);
1829                 break;
1830         case TLAN_TIMER_PHY_FINISH_AN:
1831                 tlan_phy_finish_auto_neg(dev);
1832                 break;
1833         case TLAN_TIMER_FINISH_RESET:
1834                 tlan_finish_reset(dev);
1835                 break;
1836         case TLAN_TIMER_ACTIVITY:
1837                 spin_lock_irqsave(&priv->lock, flags);
1838                 if (priv->timer.function == NULL) {
1839                         elapsed = jiffies - priv->timer_set_at;
1840                         if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1841                                 tlan_dio_write8(dev->base_addr,
1842                                                 TLAN_LED_REG, TLAN_LED_LINK);
1843                         } else  {
1844                                 priv->timer.function = tlan_timer;
1845                                 priv->timer.expires = priv->timer_set_at
1846                                         + TLAN_TIMER_ACT_DELAY;
1847                                 spin_unlock_irqrestore(&priv->lock, flags);
1848                                 add_timer(&priv->timer);
1849                                 break;
1850                         }
1851                 }
1852                 spin_unlock_irqrestore(&priv->lock, flags);
1853                 break;
1854         default:
1855                 break;
1856         }
1857
1858 }
1859
1860
1861
1862
1863 /*****************************************************************************
1864 ******************************************************************************
1865
1866 ThunderLAN driver adapter related routines
1867
1868 ******************************************************************************
1869 *****************************************************************************/
1870
1871
1872 /***************************************************************
1873  *      tlan_reset_lists
1874  *
1875  *      Returns:
1876  *              Nothing
1877  *      Parms:
1878  *              dev     The device structure with the list
1879  *                      stuctures to be reset.
1880  *
1881  *      This routine sets the variables associated with managing
1882  *      the TLAN lists to their initial values.
1883  *
1884  **************************************************************/
1885
1886 static void tlan_reset_lists(struct net_device *dev)
1887 {
1888         struct tlan_priv *priv = netdev_priv(dev);
1889         int             i;
1890         struct tlan_list        *list;
1891         dma_addr_t      list_phys;
1892         struct sk_buff  *skb;
1893
1894         priv->tx_head = 0;
1895         priv->tx_tail = 0;
1896         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1897                 list = priv->tx_list + i;
1898                 list->c_stat = TLAN_CSTAT_UNUSED;
1899                 list->buffer[0].address = 0;
1900                 list->buffer[2].count = 0;
1901                 list->buffer[2].address = 0;
1902                 list->buffer[8].address = 0;
1903                 list->buffer[9].address = 0;
1904         }
1905
1906         priv->rx_head = 0;
1907         priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1908         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1909                 list = priv->rx_list + i;
1910                 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1911                 list->c_stat = TLAN_CSTAT_READY;
1912                 list->frame_size = TLAN_MAX_FRAME_SIZE;
1913                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1914                 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1915                 if (!skb) {
1916                         netdev_err(dev, "Out of memory for received data\n");
1917                         break;
1918                 }
1919
1920                 list->buffer[0].address = pci_map_single(priv->pci_dev,
1921                                                          skb->data,
1922                                                          TLAN_MAX_FRAME_SIZE,
1923                                                          PCI_DMA_FROMDEVICE);
1924                 tlan_store_skb(list, skb);
1925                 list->buffer[1].count = 0;
1926                 list->buffer[1].address = 0;
1927                 list->forward = list_phys + sizeof(struct tlan_list);
1928         }
1929
1930         /* in case ran out of memory early, clear bits */
1931         while (i < TLAN_NUM_RX_LISTS) {
1932                 tlan_store_skb(priv->rx_list + i, NULL);
1933                 ++i;
1934         }
1935         list->forward = 0;
1936
1937 }
1938
1939
1940 static void tlan_free_lists(struct net_device *dev)
1941 {
1942         struct tlan_priv *priv = netdev_priv(dev);
1943         int             i;
1944         struct tlan_list        *list;
1945         struct sk_buff  *skb;
1946
1947         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1948                 list = priv->tx_list + i;
1949                 skb = tlan_get_skb(list);
1950                 if (skb) {
1951                         pci_unmap_single(
1952                                 priv->pci_dev,
1953                                 list->buffer[0].address,
1954                                 max(skb->len,
1955                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
1956                                 PCI_DMA_TODEVICE);
1957                         dev_kfree_skb_any(skb);
1958                         list->buffer[8].address = 0;
1959                         list->buffer[9].address = 0;
1960                 }
1961         }
1962
1963         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1964                 list = priv->rx_list + i;
1965                 skb = tlan_get_skb(list);
1966                 if (skb) {
1967                         pci_unmap_single(priv->pci_dev,
1968                                          list->buffer[0].address,
1969                                          TLAN_MAX_FRAME_SIZE,
1970                                          PCI_DMA_FROMDEVICE);
1971                         dev_kfree_skb_any(skb);
1972                         list->buffer[8].address = 0;
1973                         list->buffer[9].address = 0;
1974                 }
1975         }
1976 }
1977
1978
1979
1980
1981 /***************************************************************
1982  *      tlan_print_dio
1983  *
1984  *      Returns:
1985  *              Nothing
1986  *      Parms:
1987  *              io_base         Base IO port of the device of
1988  *                              which to print DIO registers.
1989  *
1990  *      This function prints out all the internal (DIO)
1991  *      registers of a TLAN chip.
1992  *
1993  **************************************************************/
1994
1995 static void tlan_print_dio(u16 io_base)
1996 {
1997         u32 data0, data1;
1998         int     i;
1999
2000         pr_info("Contents of internal registers for io base 0x%04hx\n",
2001                 io_base);
2002         pr_info("Off.  +0        +4\n");
2003         for (i = 0; i < 0x4C; i += 8) {
2004                 data0 = tlan_dio_read32(io_base, i);
2005                 data1 = tlan_dio_read32(io_base, i + 0x4);
2006                 pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2007         }
2008
2009 }
2010
2011
2012
2013
2014 /***************************************************************
2015  *      TLan_PrintList
2016  *
2017  *      Returns:
2018  *              Nothing
2019  *      Parms:
2020  *              list    A pointer to the struct tlan_list structure to
2021  *                      be printed.
2022  *              type    A string to designate type of list,
2023  *                      "Rx" or "Tx".
2024  *              num     The index of the list.
2025  *
2026  *      This function prints out the contents of the list
2027  *      pointed to by the list parameter.
2028  *
2029  **************************************************************/
2030
2031 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2032 {
2033         int i;
2034
2035         pr_info("%s List %d at %p\n", type, num, list);
2036         pr_info("   Forward    = 0x%08x\n",  list->forward);
2037         pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2038         pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2039         /* for (i = 0; i < 10; i++) { */
2040         for (i = 0; i < 2; i++) {
2041                 pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2042                         i, list->buffer[i].count, list->buffer[i].address);
2043         }
2044
2045 }
2046
2047
2048
2049
2050 /***************************************************************
2051  *      tlan_read_and_clear_stats
2052  *
2053  *      Returns:
2054  *              Nothing
2055  *      Parms:
2056  *              dev     Pointer to device structure of adapter
2057  *                      to which to read stats.
2058  *              record  Flag indicating whether to add
2059  *
2060  *      This functions reads all the internal status registers
2061  *      of the TLAN chip, which clears them as a side effect.
2062  *      It then either adds the values to the device's status
2063  *      struct, or discards them, depending on whether record
2064  *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2065  *
2066  **************************************************************/
2067
2068 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2069 {
2070         u32             tx_good, tx_under;
2071         u32             rx_good, rx_over;
2072         u32             def_tx, crc, code;
2073         u32             multi_col, single_col;
2074         u32             excess_col, late_col, loss;
2075
2076         outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2077         tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2078         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2079         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2080         tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2081
2082         outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2083         rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2084         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2085         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2086         rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2087
2088         outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2089         def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2090         def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2091         crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2092         code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2093
2094         outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2095         multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2096         multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2097         single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2098         single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2099
2100         outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2101         excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2102         late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2103         loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2104
2105         if (record) {
2106                 dev->stats.rx_packets += rx_good;
2107                 dev->stats.rx_errors  += rx_over + crc + code;
2108                 dev->stats.tx_packets += tx_good;
2109                 dev->stats.tx_errors  += tx_under + loss;
2110                 dev->stats.collisions += multi_col
2111                         + single_col + excess_col + late_col;
2112
2113                 dev->stats.rx_over_errors    += rx_over;
2114                 dev->stats.rx_crc_errors     += crc;
2115                 dev->stats.rx_frame_errors   += code;
2116
2117                 dev->stats.tx_aborted_errors += tx_under;
2118                 dev->stats.tx_carrier_errors += loss;
2119         }
2120
2121 }
2122
2123
2124
2125
2126 /***************************************************************
2127  *      TLan_Reset
2128  *
2129  *      Returns:
2130  *              0
2131  *      Parms:
2132  *              dev     Pointer to device structure of adapter
2133  *                      to be reset.
2134  *
2135  *      This function resets the adapter and it's physical
2136  *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2137  *      Programmer's Guide" for details.  The routine tries to
2138  *      implement what is detailed there, though adjustments
2139  *      have been made.
2140  *
2141  **************************************************************/
2142
2143 static void
2144 tlan_reset_adapter(struct net_device *dev)
2145 {
2146         struct tlan_priv        *priv = netdev_priv(dev);
2147         int             i;
2148         u32             addr;
2149         u32             data;
2150         u8              data8;
2151
2152         priv->tlan_full_duplex = false;
2153         priv->phy_online = 0;
2154         netif_carrier_off(dev);
2155
2156 /*  1.  Assert reset bit. */
2157
2158         data = inl(dev->base_addr + TLAN_HOST_CMD);
2159         data |= TLAN_HC_AD_RST;
2160         outl(data, dev->base_addr + TLAN_HOST_CMD);
2161
2162         udelay(1000);
2163
2164 /*  2.  Turn off interrupts. (Probably isn't necessary) */
2165
2166         data = inl(dev->base_addr + TLAN_HOST_CMD);
2167         data |= TLAN_HC_INT_OFF;
2168         outl(data, dev->base_addr + TLAN_HOST_CMD);
2169
2170 /*  3.  Clear AREGs and HASHs. */
2171
2172         for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2173                 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2174
2175 /*  4.  Setup NetConfig register. */
2176
2177         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2178         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2179
2180 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2181
2182         outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2183         outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2184
2185 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2186
2187         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2188         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2189         tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2190
2191 /*  7.  Setup the remaining registers. */
2192
2193         if (priv->tlan_rev >= 0x30) {
2194                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2195                 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2196         }
2197         tlan_phy_detect(dev);
2198         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2199
2200         if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2201                 data |= TLAN_NET_CFG_BIT;
2202                 if (priv->aui == 1) {
2203                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2204                 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2205                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2206                         priv->tlan_full_duplex = true;
2207                 } else {
2208                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2209                 }
2210         }
2211
2212         if (priv->phy_num == 0)
2213                 data |= TLAN_NET_CFG_PHY_EN;
2214         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2215
2216         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2217                 tlan_finish_reset(dev);
2218         else
2219                 tlan_phy_power_down(dev);
2220
2221 }
2222
2223
2224
2225
2226 static void
2227 tlan_finish_reset(struct net_device *dev)
2228 {
2229         struct tlan_priv        *priv = netdev_priv(dev);
2230         u8              data;
2231         u32             phy;
2232         u8              sio;
2233         u16             status;
2234         u16             partner;
2235         u16             tlphy_ctl;
2236         u16             tlphy_par;
2237         u16             tlphy_id1, tlphy_id2;
2238         int             i;
2239
2240         phy = priv->phy[priv->phy_num];
2241
2242         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2243         if (priv->tlan_full_duplex)
2244                 data |= TLAN_NET_CMD_DUPLEX;
2245         tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2246         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2247         if (priv->phy_num == 0)
2248                 data |= TLAN_NET_MASK_MASK7;
2249         tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2250         tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2251         tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2252         tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2253
2254         if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2255             (priv->aui)) {
2256                 status = MII_GS_LINK;
2257                 netdev_info(dev, "Link forced\n");
2258         } else {
2259                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2260                 udelay(1000);
2261                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2262                 if ((status & MII_GS_LINK) &&
2263                     /* We only support link info on Nat.Sem. PHY's */
2264                     (tlphy_id1 == NAT_SEM_ID1) &&
2265                     (tlphy_id2 == NAT_SEM_ID2)) {
2266                         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2267                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2268
2269                         netdev_info(dev,
2270                                     "Link active with %s %uMbps %s-Duplex\n",
2271                                     !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2272                                     ? "forced" : "Autonegotiation enabled,",
2273                                     tlphy_par & TLAN_PHY_SPEED_100
2274                                     ? 100 : 10,
2275                                     tlphy_par & TLAN_PHY_DUPLEX_FULL
2276                                     ? "Full" : "Half");
2277
2278                         if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2279                                 netdev_info(dev, "Partner capability:");
2280                                 for (i = 5; i < 10; i++)
2281                                         if (partner & (1 << i))
2282                                                 pr_cont(" %s", media[i-5]);
2283                                 pr_cont("\n");
2284                         }
2285
2286                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2287                                         TLAN_LED_LINK);
2288 #ifdef MONITOR
2289                         /* We have link beat..for now anyway */
2290                         priv->link = 1;
2291                         /*Enabling link beat monitoring */
2292                         tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2293 #endif
2294                 } else if (status & MII_GS_LINK)  {
2295                         netdev_info(dev, "Link active\n");
2296                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2297                                         TLAN_LED_LINK);
2298                 }
2299         }
2300
2301         if (priv->phy_num == 0) {
2302                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2303                 tlphy_ctl |= TLAN_TC_INTEN;
2304                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2305                 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2306                 sio |= TLAN_NET_SIO_MINTEN;
2307                 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2308         }
2309
2310         if (status & MII_GS_LINK) {
2311                 tlan_set_mac(dev, 0, dev->dev_addr);
2312                 priv->phy_online = 1;
2313                 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2314                 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2315                         outb((TLAN_HC_REQ_INT >> 8),
2316                              dev->base_addr + TLAN_HOST_CMD + 1);
2317                 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2318                 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2319                 netif_carrier_on(dev);
2320         } else {
2321                 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2322                 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2323                 return;
2324         }
2325         tlan_set_multicast_list(dev);
2326
2327 }
2328
2329
2330
2331
2332 /***************************************************************
2333  *      tlan_set_mac
2334  *
2335  *      Returns:
2336  *              Nothing
2337  *      Parms:
2338  *              dev     Pointer to device structure of adapter
2339  *                      on which to change the AREG.
2340  *              areg    The AREG to set the address in (0 - 3).
2341  *              mac     A pointer to an array of chars.  Each
2342  *                      element stores one byte of the address.
2343  *                      IE, it isn't in ascii.
2344  *
2345  *      This function transfers a MAC address to one of the
2346  *      TLAN AREGs (address registers).  The TLAN chip locks
2347  *      the register on writing to offset 0 and unlocks the
2348  *      register after writing to offset 5.  If NULL is passed
2349  *      in mac, then the AREG is filled with 0's.
2350  *
2351  **************************************************************/
2352
2353 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2354 {
2355         int i;
2356
2357         areg *= 6;
2358
2359         if (mac != NULL) {
2360                 for (i = 0; i < 6; i++)
2361                         tlan_dio_write8(dev->base_addr,
2362                                         TLAN_AREG_0 + areg + i, mac[i]);
2363         } else {
2364                 for (i = 0; i < 6; i++)
2365                         tlan_dio_write8(dev->base_addr,
2366                                         TLAN_AREG_0 + areg + i, 0);
2367         }
2368
2369 }
2370
2371
2372
2373
2374 /*****************************************************************************
2375 ******************************************************************************
2376
2377 ThunderLAN driver PHY layer routines
2378
2379 ******************************************************************************
2380 *****************************************************************************/
2381
2382
2383
2384 /*********************************************************************
2385  *      tlan_phy_print
2386  *
2387  *      Returns:
2388  *              Nothing
2389  *      Parms:
2390  *              dev     A pointer to the device structure of the
2391  *                      TLAN device having the PHYs to be detailed.
2392  *
2393  *      This function prints the registers a PHY (aka transceiver).
2394  *
2395  ********************************************************************/
2396
2397 static void tlan_phy_print(struct net_device *dev)
2398 {
2399         struct tlan_priv *priv = netdev_priv(dev);
2400         u16 i, data0, data1, data2, data3, phy;
2401
2402         phy = priv->phy[priv->phy_num];
2403
2404         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2405                 netdev_info(dev, "Unmanaged PHY\n");
2406         } else if (phy <= TLAN_PHY_MAX_ADDR) {
2407                 netdev_info(dev, "PHY 0x%02x\n", phy);
2408                 pr_info("   Off.  +0     +1     +2     +3\n");
2409                 for (i = 0; i < 0x20; i += 4) {
2410                         tlan_mii_read_reg(dev, phy, i, &data0);
2411                         tlan_mii_read_reg(dev, phy, i + 1, &data1);
2412                         tlan_mii_read_reg(dev, phy, i + 2, &data2);
2413                         tlan_mii_read_reg(dev, phy, i + 3, &data3);
2414                         pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2415                                 i, data0, data1, data2, data3);
2416                 }
2417         } else {
2418                 netdev_info(dev, "Invalid PHY\n");
2419         }
2420
2421 }
2422
2423
2424
2425
2426 /*********************************************************************
2427  *      tlan_phy_detect
2428  *
2429  *      Returns:
2430  *              Nothing
2431  *      Parms:
2432  *              dev     A pointer to the device structure of the adapter
2433  *                      for which the PHY needs determined.
2434  *
2435  *      So far I've found that adapters which have external PHYs
2436  *      may also use the internal PHY for part of the functionality.
2437  *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2438  *      chip has an internal PHY, and then finds the first external
2439  *      PHY (starting from address 0) if it exists).
2440  *
2441  ********************************************************************/
2442
2443 static void tlan_phy_detect(struct net_device *dev)
2444 {
2445         struct tlan_priv *priv = netdev_priv(dev);
2446         u16             control;
2447         u16             hi;
2448         u16             lo;
2449         u32             phy;
2450
2451         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2452                 priv->phy_num = 0xffff;
2453                 return;
2454         }
2455
2456         tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2457
2458         if (hi != 0xffff)
2459                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2460         else
2461                 priv->phy[0] = TLAN_PHY_NONE;
2462
2463         priv->phy[1] = TLAN_PHY_NONE;
2464         for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2465                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2466                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2467                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2468                 if ((control != 0xffff) ||
2469                     (hi != 0xffff) || (lo != 0xffff)) {
2470                         TLAN_DBG(TLAN_DEBUG_GNRL,
2471                                  "PHY found at %02x %04x %04x %04x\n",
2472                                  phy, control, hi, lo);
2473                         if ((priv->phy[1] == TLAN_PHY_NONE) &&
2474                             (phy != TLAN_PHY_MAX_ADDR)) {
2475                                 priv->phy[1] = phy;
2476                         }
2477                 }
2478         }
2479
2480         if (priv->phy[1] != TLAN_PHY_NONE)
2481                 priv->phy_num = 1;
2482         else if (priv->phy[0] != TLAN_PHY_NONE)
2483                 priv->phy_num = 0;
2484         else
2485                 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2486
2487 }
2488
2489
2490
2491
2492 static void tlan_phy_power_down(struct net_device *dev)
2493 {
2494         struct tlan_priv        *priv = netdev_priv(dev);
2495         u16             value;
2496
2497         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2498         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2499         tlan_mii_sync(dev->base_addr);
2500         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2501         if ((priv->phy_num == 0) &&
2502             (priv->phy[1] != TLAN_PHY_NONE) &&
2503             (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2504                 tlan_mii_sync(dev->base_addr);
2505                 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2506         }
2507
2508         /* Wait for 50 ms and powerup
2509          * This is abitrary.  It is intended to make sure the
2510          * transceiver settles.
2511          */
2512         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2513
2514 }
2515
2516
2517
2518
2519 static void tlan_phy_power_up(struct net_device *dev)
2520 {
2521         struct tlan_priv        *priv = netdev_priv(dev);
2522         u16             value;
2523
2524         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2525         tlan_mii_sync(dev->base_addr);
2526         value = MII_GC_LOOPBK;
2527         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2528         tlan_mii_sync(dev->base_addr);
2529         /* Wait for 500 ms and reset the
2530          * transceiver.  The TLAN docs say both 50 ms and
2531          * 500 ms, so do the longer, just in case.
2532          */
2533         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2534
2535 }
2536
2537
2538
2539
2540 static void tlan_phy_reset(struct net_device *dev)
2541 {
2542         struct tlan_priv        *priv = netdev_priv(dev);
2543         u16             phy;
2544         u16             value;
2545
2546         phy = priv->phy[priv->phy_num];
2547
2548         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name);
2549         tlan_mii_sync(dev->base_addr);
2550         value = MII_GC_LOOPBK | MII_GC_RESET;
2551         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2552         tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2553         while (value & MII_GC_RESET)
2554                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2555
2556         /* Wait for 500 ms and initialize.
2557          * I don't remember why I wait this long.
2558          * I've changed this to 50ms, as it seems long enough.
2559          */
2560         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2561
2562 }
2563
2564
2565
2566
2567 static void tlan_phy_start_link(struct net_device *dev)
2568 {
2569         struct tlan_priv        *priv = netdev_priv(dev);
2570         u16             ability;
2571         u16             control;
2572         u16             data;
2573         u16             phy;
2574         u16             status;
2575         u16             tctl;
2576
2577         phy = priv->phy[priv->phy_num];
2578         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2579         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2580         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2581
2582         if ((status & MII_GS_AUTONEG) &&
2583             (!priv->aui)) {
2584                 ability = status >> 11;
2585                 if (priv->speed  == TLAN_SPEED_10 &&
2586                     priv->duplex == TLAN_DUPLEX_HALF) {
2587                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2588                 } else if (priv->speed == TLAN_SPEED_10 &&
2589                            priv->duplex == TLAN_DUPLEX_FULL) {
2590                         priv->tlan_full_duplex = true;
2591                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2592                 } else if (priv->speed == TLAN_SPEED_100 &&
2593                            priv->duplex == TLAN_DUPLEX_HALF) {
2594                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2595                 } else if (priv->speed == TLAN_SPEED_100 &&
2596                            priv->duplex == TLAN_DUPLEX_FULL) {
2597                         priv->tlan_full_duplex = true;
2598                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2599                 } else {
2600
2601                         /* Set Auto-Neg advertisement */
2602                         tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2603                                            (ability << 5) | 1);
2604                         /* Enablee Auto-Neg */
2605                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2606                         /* Restart Auto-Neg */
2607                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2608                         /* Wait for 4 sec for autonegotiation
2609                          * to complete.  The max spec time is less than this
2610                          * but the card need additional time to start AN.
2611                          * .5 sec should be plenty extra.
2612                          */
2613                         netdev_info(dev, "Starting autonegotiation\n");
2614                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2615                         return;
2616                 }
2617
2618         }
2619
2620         if ((priv->aui) && (priv->phy_num != 0)) {
2621                 priv->phy_num = 0;
2622                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2623                         | TLAN_NET_CFG_PHY_EN;
2624                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2625                 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2626                 return;
2627         } else if (priv->phy_num == 0) {
2628                 control = 0;
2629                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2630                 if (priv->aui) {
2631                         tctl |= TLAN_TC_AUISEL;
2632                 } else {
2633                         tctl &= ~TLAN_TC_AUISEL;
2634                         if (priv->duplex == TLAN_DUPLEX_FULL) {
2635                                 control |= MII_GC_DUPLEX;
2636                                 priv->tlan_full_duplex = true;
2637                         }
2638                         if (priv->speed == TLAN_SPEED_100)
2639                                 control |= MII_GC_SPEEDSEL;
2640                 }
2641                 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2642                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2643         }
2644
2645         /* Wait for 2 sec to give the transceiver time
2646          * to establish link.
2647          */
2648         tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2649
2650 }
2651
2652
2653
2654
2655 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2656 {
2657         struct tlan_priv        *priv = netdev_priv(dev);
2658         u16             an_adv;
2659         u16             an_lpa;
2660         u16             data;
2661         u16             mode;
2662         u16             phy;
2663         u16             status;
2664
2665         phy = priv->phy[priv->phy_num];
2666
2667         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2668         udelay(1000);
2669         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2670
2671         if (!(status & MII_GS_AUTOCMPLT)) {
2672                 /* Wait for 8 sec to give the process
2673                  * more time.  Perhaps we should fail after a while.
2674                  */
2675                 if (!priv->neg_be_verbose++) {
2676                         pr_info("Giving autonegotiation more time.\n");
2677                         pr_info("Please check that your adapter has\n");
2678                         pr_info("been properly connected to a HUB or Switch.\n");
2679                         pr_info("Trying to establish link in the background...\n");
2680                 }
2681                 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2682                 return;
2683         }
2684
2685         netdev_info(dev, "Autonegotiation complete\n");
2686         tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2687         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2688         mode = an_adv & an_lpa & 0x03E0;
2689         if (mode & 0x0100)
2690                 priv->tlan_full_duplex = true;
2691         else if (!(mode & 0x0080) && (mode & 0x0040))
2692                 priv->tlan_full_duplex = true;
2693
2694         if ((!(mode & 0x0180)) &&
2695             (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2696             (priv->phy_num != 0)) {
2697                 priv->phy_num = 0;
2698                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2699                         | TLAN_NET_CFG_PHY_EN;
2700                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2701                 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2702                 return;
2703         }
2704
2705         if (priv->phy_num == 0) {
2706                 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2707                     (an_adv & an_lpa & 0x0040)) {
2708                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2709                                            MII_GC_AUTOENB | MII_GC_DUPLEX);
2710                         netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2711                 } else {
2712                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2713                                            MII_GC_AUTOENB);
2714                         netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2715                 }
2716         }
2717
2718         /* Wait for 100 ms.  No reason in partiticular.
2719          */
2720         tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2721
2722 }
2723
2724 #ifdef MONITOR
2725
2726 /*********************************************************************
2727  *
2728  *     tlan_phy_monitor
2729  *
2730  *     Returns:
2731  *            None
2732  *
2733  *     Params:
2734  *            dev            The device structure of this device.
2735  *
2736  *
2737  *     This function monitors PHY condition by reading the status
2738  *     register via the MII bus. This can be used to give info
2739  *     about link changes (up/down), and possible switch to alternate
2740  *     media.
2741  *
2742  *******************************************************************/
2743
2744 void tlan_phy_monitor(struct net_device *dev)
2745 {
2746         struct tlan_priv *priv = netdev_priv(dev);
2747         u16     phy;
2748         u16     phy_status;
2749
2750         phy = priv->phy[priv->phy_num];
2751
2752         /* Get PHY status register */
2753         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2754
2755         /* Check if link has been lost */
2756         if (!(phy_status & MII_GS_LINK)) {
2757                 if (priv->link) {
2758                         priv->link = 0;
2759                         printk(KERN_DEBUG "TLAN: %s has lost link\n",
2760                                dev->name);
2761                         netif_carrier_off(dev);
2762                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2763                         return;
2764                 }
2765         }
2766
2767         /* Link restablished? */
2768         if ((phy_status & MII_GS_LINK) && !priv->link) {
2769                 priv->link = 1;
2770                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2771                        dev->name);
2772                 netif_carrier_on(dev);
2773         }
2774
2775         /* Setup a new monitor */
2776         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2777 }
2778
2779 #endif /* MONITOR */
2780
2781
2782 /*****************************************************************************
2783 ******************************************************************************
2784
2785 ThunderLAN driver MII routines
2786
2787 these routines are based on the information in chap. 2 of the
2788 "ThunderLAN Programmer's Guide", pp. 15-24.
2789
2790 ******************************************************************************
2791 *****************************************************************************/
2792
2793
2794 /***************************************************************
2795  *      tlan_mii_read_reg
2796  *
2797  *      Returns:
2798  *              false   if ack received ok
2799  *              true    if no ack received or other error
2800  *
2801  *      Parms:
2802  *              dev             The device structure containing
2803  *                              The io address and interrupt count
2804  *                              for this device.
2805  *              phy             The address of the PHY to be queried.
2806  *              reg             The register whose contents are to be
2807  *                              retrieved.
2808  *              val             A pointer to a variable to store the
2809  *                              retrieved value.
2810  *
2811  *      This function uses the TLAN's MII bus to retrieve the contents
2812  *      of a given register on a PHY.  It sends the appropriate info
2813  *      and then reads the 16-bit register value from the MII bus via
2814  *      the TLAN SIO register.
2815  *
2816  **************************************************************/
2817
2818 static bool
2819 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2820 {
2821         u8      nack;
2822         u16     sio, tmp;
2823         u32     i;
2824         bool    err;
2825         int     minten;
2826         struct tlan_priv *priv = netdev_priv(dev);
2827         unsigned long flags = 0;
2828
2829         err = false;
2830         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2831         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2832
2833         if (!in_irq())
2834                 spin_lock_irqsave(&priv->lock, flags);
2835
2836         tlan_mii_sync(dev->base_addr);
2837
2838         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2839         if (minten)
2840                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2841
2842         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
2843         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* read  (10b) */
2844         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
2845         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
2846
2847
2848         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);        /* change direction */
2849
2850         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* clock idle bit */
2851         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2852         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* wait 300ns */
2853
2854         nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);   /* check for ACK */
2855         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);           /* finish ACK */
2856         if (nack) {                                     /* no ACK, so fake it */
2857                 for (i = 0; i < 16; i++) {
2858                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2859                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2860                 }
2861                 tmp = 0xffff;
2862                 err = true;
2863         } else {                                        /* ACK, so read data */
2864                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2865                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2866                         if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2867                                 tmp |= i;
2868                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2869                 }
2870         }
2871
2872
2873         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* idle cycle */
2874         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2875
2876         if (minten)
2877                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2878
2879         *val = tmp;
2880
2881         if (!in_irq())
2882                 spin_unlock_irqrestore(&priv->lock, flags);
2883
2884         return err;
2885
2886 }
2887
2888
2889
2890
2891 /***************************************************************
2892  *      tlan_mii_send_data
2893  *
2894  *      Returns:
2895  *              Nothing
2896  *      Parms:
2897  *              base_port       The base IO port of the adapter in
2898  *                              question.
2899  *              dev             The address of the PHY to be queried.
2900  *              data            The value to be placed on the MII bus.
2901  *              num_bits        The number of bits in data that are to
2902  *                              be placed on the MII bus.
2903  *
2904  *      This function sends on sequence of bits on the MII
2905  *      configuration bus.
2906  *
2907  **************************************************************/
2908
2909 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2910 {
2911         u16 sio;
2912         u32 i;
2913
2914         if (num_bits == 0)
2915                 return;
2916
2917         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2918         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2919         tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2920
2921         for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2922                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2923                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2924                 if (data & i)
2925                         tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2926                 else
2927                         tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2928                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2929                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2930         }
2931
2932 }
2933
2934
2935
2936
2937 /***************************************************************
2938  *      TLan_MiiSync
2939  *
2940  *      Returns:
2941  *              Nothing
2942  *      Parms:
2943  *              base_port       The base IO port of the adapter in
2944  *                              question.
2945  *
2946  *      This functions syncs all PHYs in terms of the MII configuration
2947  *      bus.
2948  *
2949  **************************************************************/
2950
2951 static void tlan_mii_sync(u16 base_port)
2952 {
2953         int i;
2954         u16 sio;
2955
2956         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2957         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2958
2959         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2960         for (i = 0; i < 32; i++) {
2961                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2962                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2963         }
2964
2965 }
2966
2967
2968
2969
2970 /***************************************************************
2971  *      tlan_mii_write_reg
2972  *
2973  *      Returns:
2974  *              Nothing
2975  *      Parms:
2976  *              dev             The device structure for the device
2977  *                              to write to.
2978  *              phy             The address of the PHY to be written to.
2979  *              reg             The register whose contents are to be
2980  *                              written.
2981  *              val             The value to be written to the register.
2982  *
2983  *      This function uses the TLAN's MII bus to write the contents of a
2984  *      given register on a PHY.  It sends the appropriate info and then
2985  *      writes the 16-bit register value from the MII configuration bus
2986  *      via the TLAN SIO register.
2987  *
2988  **************************************************************/
2989
2990 static void
2991 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2992 {
2993         u16     sio;
2994         int     minten;
2995         unsigned long flags = 0;
2996         struct tlan_priv *priv = netdev_priv(dev);
2997
2998         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2999         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3000
3001         if (!in_irq())
3002                 spin_lock_irqsave(&priv->lock, flags);
3003
3004         tlan_mii_sync(dev->base_addr);
3005
3006         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3007         if (minten)
3008                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3009
3010         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
3011         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* write (01b) */
3012         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
3013         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
3014
3015         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* send ACK */
3016         tlan_mii_send_data(dev->base_addr, val, 16);    /* send data */
3017
3018         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3019         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3020
3021         if (minten)
3022                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3023
3024         if (!in_irq())
3025                 spin_unlock_irqrestore(&priv->lock, flags);
3026
3027 }
3028
3029
3030
3031
3032 /*****************************************************************************
3033 ******************************************************************************
3034
3035 ThunderLAN driver eeprom routines
3036
3037 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3038 EEPROM.  these functions are based on information in microchip's
3039 data sheet.  I don't know how well this functions will work with
3040 other Eeproms.
3041
3042 ******************************************************************************
3043 *****************************************************************************/
3044
3045
3046 /***************************************************************
3047  *      tlan_ee_send_start
3048  *
3049  *      Returns:
3050  *              Nothing
3051  *      Parms:
3052  *              io_base         The IO port base address for the
3053  *                              TLAN device with the EEPROM to
3054  *                              use.
3055  *
3056  *      This function sends a start cycle to an EEPROM attached
3057  *      to a TLAN chip.
3058  *
3059  **************************************************************/
3060
3061 static void tlan_ee_send_start(u16 io_base)
3062 {
3063         u16     sio;
3064
3065         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3066         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3067
3068         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3069         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3070         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3071         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3072         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3073
3074 }
3075
3076
3077
3078
3079 /***************************************************************
3080  *      tlan_ee_send_byte
3081  *
3082  *      Returns:
3083  *              If the correct ack was received, 0, otherwise 1
3084  *      Parms:  io_base         The IO port base address for the
3085  *                              TLAN device with the EEPROM to
3086  *                              use.
3087  *              data            The 8 bits of information to
3088  *                              send to the EEPROM.
3089  *              stop            If TLAN_EEPROM_STOP is passed, a
3090  *                              stop cycle is sent after the
3091  *                              byte is sent after the ack is
3092  *                              read.
3093  *
3094  *      This function sends a byte on the serial EEPROM line,
3095  *      driving the clock to send each bit. The function then
3096  *      reverses transmission direction and reads an acknowledge
3097  *      bit.
3098  *
3099  **************************************************************/
3100
3101 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3102 {
3103         int     err;
3104         u8      place;
3105         u16     sio;
3106
3107         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3108         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3109
3110         /* Assume clock is low, tx is enabled; */
3111         for (place = 0x80; place != 0; place >>= 1) {
3112                 if (place & data)
3113                         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3114                 else
3115                         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3116                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3117                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3118         }
3119         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3120         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3121         err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3122         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3123         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3124
3125         if ((!err) && stop) {
3126                 /* STOP, raise data while clock is high */
3127                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3128                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3129                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3130         }
3131
3132         return err;
3133
3134 }
3135
3136
3137
3138
3139 /***************************************************************
3140  *      tlan_ee_receive_byte
3141  *
3142  *      Returns:
3143  *              Nothing
3144  *      Parms:
3145  *              io_base         The IO port base address for the
3146  *                              TLAN device with the EEPROM to
3147  *                              use.
3148  *              data            An address to a char to hold the
3149  *                              data sent from the EEPROM.
3150  *              stop            If TLAN_EEPROM_STOP is passed, a
3151  *                              stop cycle is sent after the
3152  *                              byte is received, and no ack is
3153  *                              sent.
3154  *
3155  *      This function receives 8 bits of data from the EEPROM
3156  *      over the serial link.  It then sends and ack bit, or no
3157  *      ack and a stop bit.  This function is used to retrieve
3158  *      data after the address of a byte in the EEPROM has been
3159  *      sent.
3160  *
3161  **************************************************************/
3162
3163 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3164 {
3165         u8  place;
3166         u16 sio;
3167
3168         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3169         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3170         *data = 0;
3171
3172         /* Assume clock is low, tx is enabled; */
3173         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3174         for (place = 0x80; place; place >>= 1) {
3175                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3176                 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3177                         *data |= place;
3178                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3179         }
3180
3181         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3182         if (!stop) {
3183                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3184                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3185                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3186         } else {
3187                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);  /* no ack = 1 (?) */
3188                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3189                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3190                 /* STOP, raise data while clock is high */
3191                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3192                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3193                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3194         }
3195
3196 }
3197
3198
3199
3200
3201 /***************************************************************
3202  *      tlan_ee_read_byte
3203  *
3204  *      Returns:
3205  *              No error = 0, else, the stage at which the error
3206  *              occurred.
3207  *      Parms:
3208  *              io_base         The IO port base address for the
3209  *                              TLAN device with the EEPROM to
3210  *                              use.
3211  *              ee_addr         The address of the byte in the
3212  *                              EEPROM whose contents are to be
3213  *                              retrieved.
3214  *              data            An address to a char to hold the
3215  *                              data obtained from the EEPROM.
3216  *
3217  *      This function reads a byte of information from an byte
3218  *      cell in the EEPROM.
3219  *
3220  **************************************************************/
3221
3222 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3223 {
3224         int err;
3225         struct tlan_priv *priv = netdev_priv(dev);
3226         unsigned long flags = 0;
3227         int ret = 0;
3228
3229         spin_lock_irqsave(&priv->lock, flags);
3230
3231         tlan_ee_send_start(dev->base_addr);
3232         err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3233         if (err) {
3234                 ret = 1;
3235                 goto fail;
3236         }
3237         err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3238         if (err) {
3239                 ret = 2;
3240                 goto fail;
3241         }
3242         tlan_ee_send_start(dev->base_addr);
3243         err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3244         if (err) {
3245                 ret = 3;
3246                 goto fail;
3247         }
3248         tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3249 fail:
3250         spin_unlock_irqrestore(&priv->lock, flags);
3251
3252         return ret;
3253
3254 }
3255
3256
3257