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 |= ((unsigned long) 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 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         cancel_work_sync(&priv->tlan_tqueue);
 324 }
 325
 326 static void tlan_start(struct net_device *dev)
 327 {
 328         tlan_reset_lists(dev);
 329         /* NOTE: It might not be necessary to read the stats before a
 330            reset if you don't care what the values are.
 331         */
 332         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 333         tlan_reset_adapter(dev);
 334         netif_wake_queue(dev);
 335 }
 336
 337 static void tlan_stop(struct net_device *dev)
 338 {
 339         struct tlan_priv *priv = netdev_priv(dev);
 340
 341         tlan_read_and_clear_stats(dev, TLAN_RECORD);
 342         outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 343         /* Reset and power down phy */
 344         tlan_reset_adapter(dev);
 345         if (priv->timer.function != NULL) {
 346                 del_timer_sync(&priv->timer);
 347                 priv->timer.function = NULL;
 348         }
 349 }
 350
 351 #ifdef CONFIG_PM
 352
 353 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
 354 {
 355         struct net_device *dev = pci_get_drvdata(pdev);
 356
 357         if (netif_running(dev))
 358                 tlan_stop(dev);
 359
 360         netif_device_detach(dev);
 361         pci_save_state(pdev);
 362         pci_disable_device(pdev);
 363         pci_wake_from_d3(pdev, false);
 364         pci_set_power_state(pdev, PCI_D3hot);
 365
 366         return 0;
 367 }
 368
 369 static int tlan_resume(struct pci_dev *pdev)
 370 {
 371         struct net_device *dev = pci_get_drvdata(pdev);
 372
 373         pci_set_power_state(pdev, PCI_D0);
 374         pci_restore_state(pdev);
 375         pci_enable_wake(pdev, 0, 0);
 376         netif_device_attach(dev);
 377
 378         if (netif_running(dev))
 379                 tlan_start(dev);
 380
 381         return 0;
 382 }
 383
 384 #else /* CONFIG_PM */
 385
 386 #define tlan_suspend   NULL
 387 #define tlan_resume    NULL
 388
 389 #endif /* CONFIG_PM */
 390
 391
 392 static struct pci_driver tlan_driver = {
 393         .name           = "tlan",
 394         .id_table       = tlan_pci_tbl,
 395         .probe          = tlan_init_one,
 396         .remove         = tlan_remove_one,
 397         .suspend        = tlan_suspend,
 398         .resume         = tlan_resume,
 399 };
 400
 401 static int __init tlan_probe(void)
 402 {
 403         int rc = -ENODEV;
 404
 405         pr_info("%s", tlan_banner);
 406
 407         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 408
 409         /* Use new style PCI probing. Now the kernel will
 410            do most of this for us */
 411         rc = pci_register_driver(&tlan_driver);
 412
 413         if (rc != 0) {
 414                 pr_err("Could not register pci driver\n");
 415                 goto err_out_pci_free;
 416         }
 417
 418         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 419         tlan_eisa_probe();
 420
 421         pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 422                 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 423                 tlan_have_pci, tlan_have_eisa);
 424
 425         if (tlan_devices_installed == 0) {
 426                 rc = -ENODEV;
 427                 goto  err_out_pci_unreg;
 428         }
 429         return 0;
 430
 431 err_out_pci_unreg:
 432         pci_unregister_driver(&tlan_driver);
 433 err_out_pci_free:
 434         return rc;
 435 }
 436
 437
 438 static int tlan_init_one(struct pci_dev *pdev,
 439                                    const struct pci_device_id *ent)
 440 {
 441         return tlan_probe1(pdev, -1, -1, 0, ent);
 442 }
 443
 444
 445 /*
 446 ***************************************************************
 447 *       tlan_probe1
 448 *
 449 *       Returns:
 450 *               0 on success, error code on error
 451 *       Parms:
 452 *               none
 453 *
 454 *       The name is lower case to fit in with all the rest of
 455 *       the netcard_probe names.  This function looks for
 456 *       another TLan based adapter, setting it up with the
 457 *       allocated device struct if one is found.
 458 *       tlan_probe has been ported to the new net API and
 459 *       now allocates its own device structure. This function
 460 *       is also used by modules.
 461 *
 462 **************************************************************/
 463
 464 static int tlan_probe1(struct pci_dev *pdev, 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                         break;
1917
1918                 list->buffer[0].address = pci_map_single(priv->pci_dev,
1919                                                          skb->data,
1920                                                          TLAN_MAX_FRAME_SIZE,
1921                                                          PCI_DMA_FROMDEVICE);
1922                 tlan_store_skb(list, skb);
1923                 list->buffer[1].count = 0;
1924                 list->buffer[1].address = 0;
1925                 list->forward = list_phys + sizeof(struct tlan_list);
1926         }
1927
1928         /* in case ran out of memory early, clear bits */
1929         while (i < TLAN_NUM_RX_LISTS) {
1930                 tlan_store_skb(priv->rx_list + i, NULL);
1931                 ++i;
1932         }
1933         list->forward = 0;
1934
1935 }
1936
1937
1938 static void tlan_free_lists(struct net_device *dev)
1939 {
1940         struct tlan_priv *priv = netdev_priv(dev);
1941         int             i;
1942         struct tlan_list        *list;
1943         struct sk_buff  *skb;
1944
1945         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1946                 list = priv->tx_list + i;
1947                 skb = tlan_get_skb(list);
1948                 if (skb) {
1949                         pci_unmap_single(
1950                                 priv->pci_dev,
1951                                 list->buffer[0].address,
1952                                 max(skb->len,
1953                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
1954                                 PCI_DMA_TODEVICE);
1955                         dev_kfree_skb_any(skb);
1956                         list->buffer[8].address = 0;
1957                         list->buffer[9].address = 0;
1958                 }
1959         }
1960
1961         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1962                 list = priv->rx_list + i;
1963                 skb = tlan_get_skb(list);
1964                 if (skb) {
1965                         pci_unmap_single(priv->pci_dev,
1966                                          list->buffer[0].address,
1967                                          TLAN_MAX_FRAME_SIZE,
1968                                          PCI_DMA_FROMDEVICE);
1969                         dev_kfree_skb_any(skb);
1970                         list->buffer[8].address = 0;
1971                         list->buffer[9].address = 0;
1972                 }
1973         }
1974 }
1975
1976
1977
1978
1979 /***************************************************************
1980  *      tlan_print_dio
1981  *
1982  *      Returns:
1983  *              Nothing
1984  *      Parms:
1985  *              io_base         Base IO port of the device of
1986  *                              which to print DIO registers.
1987  *
1988  *      This function prints out all the internal (DIO)
1989  *      registers of a TLAN chip.
1990  *
1991  **************************************************************/
1992
1993 static void tlan_print_dio(u16 io_base)
1994 {
1995         u32 data0, data1;
1996         int     i;
1997
1998         pr_info("Contents of internal registers for io base 0x%04hx\n",
1999                 io_base);
2000         pr_info("Off.  +0        +4\n");
2001         for (i = 0; i < 0x4C; i += 8) {
2002                 data0 = tlan_dio_read32(io_base, i);
2003                 data1 = tlan_dio_read32(io_base, i + 0x4);
2004                 pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2005         }
2006
2007 }
2008
2009
2010
2011
2012 /***************************************************************
2013  *      TLan_PrintList
2014  *
2015  *      Returns:
2016  *              Nothing
2017  *      Parms:
2018  *              list    A pointer to the struct tlan_list structure to
2019  *                      be printed.
2020  *              type    A string to designate type of list,
2021  *                      "Rx" or "Tx".
2022  *              num     The index of the list.
2023  *
2024  *      This function prints out the contents of the list
2025  *      pointed to by the list parameter.
2026  *
2027  **************************************************************/
2028
2029 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2030 {
2031         int i;
2032
2033         pr_info("%s List %d at %p\n", type, num, list);
2034         pr_info("   Forward    = 0x%08x\n",  list->forward);
2035         pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2036         pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2037         /* for (i = 0; i < 10; i++) { */
2038         for (i = 0; i < 2; i++) {
2039                 pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2040                         i, list->buffer[i].count, list->buffer[i].address);
2041         }
2042
2043 }
2044
2045
2046
2047
2048 /***************************************************************
2049  *      tlan_read_and_clear_stats
2050  *
2051  *      Returns:
2052  *              Nothing
2053  *      Parms:
2054  *              dev     Pointer to device structure of adapter
2055  *                      to which to read stats.
2056  *              record  Flag indicating whether to add
2057  *
2058  *      This functions reads all the internal status registers
2059  *      of the TLAN chip, which clears them as a side effect.
2060  *      It then either adds the values to the device's status
2061  *      struct, or discards them, depending on whether record
2062  *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2063  *
2064  **************************************************************/
2065
2066 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2067 {
2068         u32             tx_good, tx_under;
2069         u32             rx_good, rx_over;
2070         u32             def_tx, crc, code;
2071         u32             multi_col, single_col;
2072         u32             excess_col, late_col, loss;
2073
2074         outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2075         tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2076         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2077         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2078         tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2079
2080         outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2081         rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2082         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2083         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2084         rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2085
2086         outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2087         def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2088         def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2089         crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2090         code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2091
2092         outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2093         multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2094         multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2095         single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2096         single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2097
2098         outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2099         excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2100         late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2101         loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2102
2103         if (record) {
2104                 dev->stats.rx_packets += rx_good;
2105                 dev->stats.rx_errors  += rx_over + crc + code;
2106                 dev->stats.tx_packets += tx_good;
2107                 dev->stats.tx_errors  += tx_under + loss;
2108                 dev->stats.collisions += multi_col
2109                         + single_col + excess_col + late_col;
2110
2111                 dev->stats.rx_over_errors    += rx_over;
2112                 dev->stats.rx_crc_errors     += crc;
2113                 dev->stats.rx_frame_errors   += code;
2114
2115                 dev->stats.tx_aborted_errors += tx_under;
2116                 dev->stats.tx_carrier_errors += loss;
2117         }
2118
2119 }
2120
2121
2122
2123
2124 /***************************************************************
2125  *      TLan_Reset
2126  *
2127  *      Returns:
2128  *              0
2129  *      Parms:
2130  *              dev     Pointer to device structure of adapter
2131  *                      to be reset.
2132  *
2133  *      This function resets the adapter and it's physical
2134  *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2135  *      Programmer's Guide" for details.  The routine tries to
2136  *      implement what is detailed there, though adjustments
2137  *      have been made.
2138  *
2139  **************************************************************/
2140
2141 static void
2142 tlan_reset_adapter(struct net_device *dev)
2143 {
2144         struct tlan_priv        *priv = netdev_priv(dev);
2145         int             i;
2146         u32             addr;
2147         u32             data;
2148         u8              data8;
2149
2150         priv->tlan_full_duplex = false;
2151         priv->phy_online = 0;
2152         netif_carrier_off(dev);
2153
2154 /*  1.  Assert reset bit. */
2155
2156         data = inl(dev->base_addr + TLAN_HOST_CMD);
2157         data |= TLAN_HC_AD_RST;
2158         outl(data, dev->base_addr + TLAN_HOST_CMD);
2159
2160         udelay(1000);
2161
2162 /*  2.  Turn off interrupts. (Probably isn't necessary) */
2163
2164         data = inl(dev->base_addr + TLAN_HOST_CMD);
2165         data |= TLAN_HC_INT_OFF;
2166         outl(data, dev->base_addr + TLAN_HOST_CMD);
2167
2168 /*  3.  Clear AREGs and HASHs. */
2169
2170         for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2171                 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2172
2173 /*  4.  Setup NetConfig register. */
2174
2175         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2176         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2177
2178 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2179
2180         outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2181         outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2182
2183 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2184
2185         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2186         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2187         tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2188
2189 /*  7.  Setup the remaining registers. */
2190
2191         if (priv->tlan_rev >= 0x30) {
2192                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2193                 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2194         }
2195         tlan_phy_detect(dev);
2196         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2197
2198         if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2199                 data |= TLAN_NET_CFG_BIT;
2200                 if (priv->aui == 1) {
2201                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2202                 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2203                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2204                         priv->tlan_full_duplex = true;
2205                 } else {
2206                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2207                 }
2208         }
2209
2210         if (priv->phy_num == 0)
2211                 data |= TLAN_NET_CFG_PHY_EN;
2212         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2213
2214         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2215                 tlan_finish_reset(dev);
2216         else
2217                 tlan_phy_power_down(dev);
2218
2219 }
2220
2221
2222
2223
2224 static void
2225 tlan_finish_reset(struct net_device *dev)
2226 {
2227         struct tlan_priv        *priv = netdev_priv(dev);
2228         u8              data;
2229         u32             phy;
2230         u8              sio;
2231         u16             status;
2232         u16             partner;
2233         u16             tlphy_ctl;
2234         u16             tlphy_par;
2235         u16             tlphy_id1, tlphy_id2;
2236         int             i;
2237
2238         phy = priv->phy[priv->phy_num];
2239
2240         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2241         if (priv->tlan_full_duplex)
2242                 data |= TLAN_NET_CMD_DUPLEX;
2243         tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2244         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2245         if (priv->phy_num == 0)
2246                 data |= TLAN_NET_MASK_MASK7;
2247         tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2248         tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2249         tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2250         tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2251
2252         if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2253             (priv->aui)) {
2254                 status = MII_GS_LINK;
2255                 netdev_info(dev, "Link forced\n");
2256         } else {
2257                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2258                 udelay(1000);
2259                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2260                 if ((status & MII_GS_LINK) &&
2261                     /* We only support link info on Nat.Sem. PHY's */
2262                     (tlphy_id1 == NAT_SEM_ID1) &&
2263                     (tlphy_id2 == NAT_SEM_ID2)) {
2264                         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2265                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2266
2267                         netdev_info(dev,
2268                                     "Link active with %s %uMbps %s-Duplex\n",
2269                                     !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2270                                     ? "forced" : "Autonegotiation enabled,",
2271                                     tlphy_par & TLAN_PHY_SPEED_100
2272                                     ? 100 : 10,
2273                                     tlphy_par & TLAN_PHY_DUPLEX_FULL
2274                                     ? "Full" : "Half");
2275
2276                         if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2277                                 netdev_info(dev, "Partner capability:");
2278                                 for (i = 5; i < 10; i++)
2279                                         if (partner & (1 << i))
2280                                                 pr_cont(" %s", media[i-5]);
2281                                 pr_cont("\n");
2282                         }
2283
2284                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2285                                         TLAN_LED_LINK);
2286 #ifdef MONITOR
2287                         /* We have link beat..for now anyway */
2288                         priv->link = 1;
2289                         /*Enabling link beat monitoring */
2290                         tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2291 #endif
2292                 } else if (status & MII_GS_LINK)  {
2293                         netdev_info(dev, "Link active\n");
2294                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2295                                         TLAN_LED_LINK);
2296                 }
2297         }
2298
2299         if (priv->phy_num == 0) {
2300                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2301                 tlphy_ctl |= TLAN_TC_INTEN;
2302                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2303                 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2304                 sio |= TLAN_NET_SIO_MINTEN;
2305                 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2306         }
2307
2308         if (status & MII_GS_LINK) {
2309                 tlan_set_mac(dev, 0, dev->dev_addr);
2310                 priv->phy_online = 1;
2311                 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2312                 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2313                         outb((TLAN_HC_REQ_INT >> 8),
2314                              dev->base_addr + TLAN_HOST_CMD + 1);
2315                 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2316                 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2317                 netif_carrier_on(dev);
2318         } else {
2319                 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2320                 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2321                 return;
2322         }
2323         tlan_set_multicast_list(dev);
2324
2325 }
2326
2327
2328
2329
2330 /***************************************************************
2331  *      tlan_set_mac
2332  *
2333  *      Returns:
2334  *              Nothing
2335  *      Parms:
2336  *              dev     Pointer to device structure of adapter
2337  *                      on which to change the AREG.
2338  *              areg    The AREG to set the address in (0 - 3).
2339  *              mac     A pointer to an array of chars.  Each
2340  *                      element stores one byte of the address.
2341  *                      IE, it isn't in ascii.
2342  *
2343  *      This function transfers a MAC address to one of the
2344  *      TLAN AREGs (address registers).  The TLAN chip locks
2345  *      the register on writing to offset 0 and unlocks the
2346  *      register after writing to offset 5.  If NULL is passed
2347  *      in mac, then the AREG is filled with 0's.
2348  *
2349  **************************************************************/
2350
2351 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2352 {
2353         int i;
2354
2355         areg *= 6;
2356
2357         if (mac != NULL) {
2358                 for (i = 0; i < 6; i++)
2359                         tlan_dio_write8(dev->base_addr,
2360                                         TLAN_AREG_0 + areg + i, mac[i]);
2361         } else {
2362                 for (i = 0; i < 6; i++)
2363                         tlan_dio_write8(dev->base_addr,
2364                                         TLAN_AREG_0 + areg + i, 0);
2365         }
2366
2367 }
2368
2369
2370
2371
2372 /*****************************************************************************
2373 ******************************************************************************
2374
2375 ThunderLAN driver PHY layer routines
2376
2377 ******************************************************************************
2378 *****************************************************************************/
2379
2380
2381
2382 /*********************************************************************
2383  *      tlan_phy_print
2384  *
2385  *      Returns:
2386  *              Nothing
2387  *      Parms:
2388  *              dev     A pointer to the device structure of the
2389  *                      TLAN device having the PHYs to be detailed.
2390  *
2391  *      This function prints the registers a PHY (aka transceiver).
2392  *
2393  ********************************************************************/
2394
2395 static void tlan_phy_print(struct net_device *dev)
2396 {
2397         struct tlan_priv *priv = netdev_priv(dev);
2398         u16 i, data0, data1, data2, data3, phy;
2399
2400         phy = priv->phy[priv->phy_num];
2401
2402         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2403                 netdev_info(dev, "Unmanaged PHY\n");
2404         } else if (phy <= TLAN_PHY_MAX_ADDR) {
2405                 netdev_info(dev, "PHY 0x%02x\n", phy);
2406                 pr_info("   Off.  +0     +1     +2     +3\n");
2407                 for (i = 0; i < 0x20; i += 4) {
2408                         tlan_mii_read_reg(dev, phy, i, &data0);
2409                         tlan_mii_read_reg(dev, phy, i + 1, &data1);
2410                         tlan_mii_read_reg(dev, phy, i + 2, &data2);
2411                         tlan_mii_read_reg(dev, phy, i + 3, &data3);
2412                         pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2413                                 i, data0, data1, data2, data3);
2414                 }
2415         } else {
2416                 netdev_info(dev, "Invalid PHY\n");
2417         }
2418
2419 }
2420
2421
2422
2423
2424 /*********************************************************************
2425  *      tlan_phy_detect
2426  *
2427  *      Returns:
2428  *              Nothing
2429  *      Parms:
2430  *              dev     A pointer to the device structure of the adapter
2431  *                      for which the PHY needs determined.
2432  *
2433  *      So far I've found that adapters which have external PHYs
2434  *      may also use the internal PHY for part of the functionality.
2435  *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2436  *      chip has an internal PHY, and then finds the first external
2437  *      PHY (starting from address 0) if it exists).
2438  *
2439  ********************************************************************/
2440
2441 static void tlan_phy_detect(struct net_device *dev)
2442 {
2443         struct tlan_priv *priv = netdev_priv(dev);
2444         u16             control;
2445         u16             hi;
2446         u16             lo;
2447         u32             phy;
2448
2449         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2450                 priv->phy_num = 0xffff;
2451                 return;
2452         }
2453
2454         tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2455
2456         if (hi != 0xffff)
2457                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2458         else
2459                 priv->phy[0] = TLAN_PHY_NONE;
2460
2461         priv->phy[1] = TLAN_PHY_NONE;
2462         for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2463                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2464                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2465                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2466                 if ((control != 0xffff) ||
2467                     (hi != 0xffff) || (lo != 0xffff)) {
2468                         TLAN_DBG(TLAN_DEBUG_GNRL,
2469                                  "PHY found at %02x %04x %04x %04x\n",
2470                                  phy, control, hi, lo);
2471                         if ((priv->phy[1] == TLAN_PHY_NONE) &&
2472                             (phy != TLAN_PHY_MAX_ADDR)) {
2473                                 priv->phy[1] = phy;
2474                         }
2475                 }
2476         }
2477
2478         if (priv->phy[1] != TLAN_PHY_NONE)
2479                 priv->phy_num = 1;
2480         else if (priv->phy[0] != TLAN_PHY_NONE)
2481                 priv->phy_num = 0;
2482         else
2483                 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2484
2485 }
2486
2487
2488
2489
2490 static void tlan_phy_power_down(struct net_device *dev)
2491 {
2492         struct tlan_priv        *priv = netdev_priv(dev);
2493         u16             value;
2494
2495         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2496         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2497         tlan_mii_sync(dev->base_addr);
2498         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2499         if ((priv->phy_num == 0) &&
2500             (priv->phy[1] != TLAN_PHY_NONE) &&
2501             (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2502                 tlan_mii_sync(dev->base_addr);
2503                 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2504         }
2505
2506         /* Wait for 50 ms and powerup
2507          * This is abitrary.  It is intended to make sure the
2508          * transceiver settles.
2509          */
2510         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2511
2512 }
2513
2514
2515
2516
2517 static void tlan_phy_power_up(struct net_device *dev)
2518 {
2519         struct tlan_priv        *priv = netdev_priv(dev);
2520         u16             value;
2521
2522         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2523         tlan_mii_sync(dev->base_addr);
2524         value = MII_GC_LOOPBK;
2525         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2526         tlan_mii_sync(dev->base_addr);
2527         /* Wait for 500 ms and reset the
2528          * transceiver.  The TLAN docs say both 50 ms and
2529          * 500 ms, so do the longer, just in case.
2530          */
2531         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2532
2533 }
2534
2535
2536
2537
2538 static void tlan_phy_reset(struct net_device *dev)
2539 {
2540         struct tlan_priv        *priv = netdev_priv(dev);
2541         u16             phy;
2542         u16             value;
2543
2544         phy = priv->phy[priv->phy_num];
2545
2546         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2547         tlan_mii_sync(dev->base_addr);
2548         value = MII_GC_LOOPBK | MII_GC_RESET;
2549         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2550         tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2551         while (value & MII_GC_RESET)
2552                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2553
2554         /* Wait for 500 ms and initialize.
2555          * I don't remember why I wait this long.
2556          * I've changed this to 50ms, as it seems long enough.
2557          */
2558         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2559
2560 }
2561
2562
2563
2564
2565 static void tlan_phy_start_link(struct net_device *dev)
2566 {
2567         struct tlan_priv        *priv = netdev_priv(dev);
2568         u16             ability;
2569         u16             control;
2570         u16             data;
2571         u16             phy;
2572         u16             status;
2573         u16             tctl;
2574
2575         phy = priv->phy[priv->phy_num];
2576         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2577         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2578         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2579
2580         if ((status & MII_GS_AUTONEG) &&
2581             (!priv->aui)) {
2582                 ability = status >> 11;
2583                 if (priv->speed  == TLAN_SPEED_10 &&
2584                     priv->duplex == TLAN_DUPLEX_HALF) {
2585                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2586                 } else if (priv->speed == TLAN_SPEED_10 &&
2587                            priv->duplex == TLAN_DUPLEX_FULL) {
2588                         priv->tlan_full_duplex = true;
2589                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2590                 } else if (priv->speed == TLAN_SPEED_100 &&
2591                            priv->duplex == TLAN_DUPLEX_HALF) {
2592                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2593                 } else if (priv->speed == TLAN_SPEED_100 &&
2594                            priv->duplex == TLAN_DUPLEX_FULL) {
2595                         priv->tlan_full_duplex = true;
2596                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2597                 } else {
2598
2599                         /* Set Auto-Neg advertisement */
2600                         tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2601                                            (ability << 5) | 1);
2602                         /* Enablee Auto-Neg */
2603                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2604                         /* Restart Auto-Neg */
2605                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2606                         /* Wait for 4 sec for autonegotiation
2607                          * to complete.  The max spec time is less than this
2608                          * but the card need additional time to start AN.
2609                          * .5 sec should be plenty extra.
2610                          */
2611                         netdev_info(dev, "Starting autonegotiation\n");
2612                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2613                         return;
2614                 }
2615
2616         }
2617
2618         if ((priv->aui) && (priv->phy_num != 0)) {
2619                 priv->phy_num = 0;
2620                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2621                         | TLAN_NET_CFG_PHY_EN;
2622                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2623                 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2624                 return;
2625         } else if (priv->phy_num == 0) {
2626                 control = 0;
2627                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2628                 if (priv->aui) {
2629                         tctl |= TLAN_TC_AUISEL;
2630                 } else {
2631                         tctl &= ~TLAN_TC_AUISEL;
2632                         if (priv->duplex == TLAN_DUPLEX_FULL) {
2633                                 control |= MII_GC_DUPLEX;
2634                                 priv->tlan_full_duplex = true;
2635                         }
2636                         if (priv->speed == TLAN_SPEED_100)
2637                                 control |= MII_GC_SPEEDSEL;
2638                 }
2639                 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2640                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2641         }
2642
2643         /* Wait for 2 sec to give the transceiver time
2644          * to establish link.
2645          */
2646         tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2647
2648 }
2649
2650
2651
2652
2653 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2654 {
2655         struct tlan_priv        *priv = netdev_priv(dev);
2656         u16             an_adv;
2657         u16             an_lpa;
2658         u16             data;
2659         u16             mode;
2660         u16             phy;
2661         u16             status;
2662
2663         phy = priv->phy[priv->phy_num];
2664
2665         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2666         udelay(1000);
2667         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2668
2669         if (!(status & MII_GS_AUTOCMPLT)) {
2670                 /* Wait for 8 sec to give the process
2671                  * more time.  Perhaps we should fail after a while.
2672                  */
2673                 if (!priv->neg_be_verbose++) {
2674                         pr_info("Giving autonegotiation more time.\n");
2675                         pr_info("Please check that your adapter has\n");
2676                         pr_info("been properly connected to a HUB or Switch.\n");
2677                         pr_info("Trying to establish link in the background...\n");
2678                 }
2679                 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2680                 return;
2681         }
2682
2683         netdev_info(dev, "Autonegotiation complete\n");
2684         tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2685         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2686         mode = an_adv & an_lpa & 0x03E0;
2687         if (mode & 0x0100)
2688                 priv->tlan_full_duplex = true;
2689         else if (!(mode & 0x0080) && (mode & 0x0040))
2690                 priv->tlan_full_duplex = true;
2691
2692         if ((!(mode & 0x0180)) &&
2693             (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2694             (priv->phy_num != 0)) {
2695                 priv->phy_num = 0;
2696                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2697                         | TLAN_NET_CFG_PHY_EN;
2698                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2699                 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2700                 return;
2701         }
2702
2703         if (priv->phy_num == 0) {
2704                 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2705                     (an_adv & an_lpa & 0x0040)) {
2706                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2707                                            MII_GC_AUTOENB | MII_GC_DUPLEX);
2708                         netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2709                 } else {
2710                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2711                                            MII_GC_AUTOENB);
2712                         netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2713                 }
2714         }
2715
2716         /* Wait for 100 ms.  No reason in partiticular.
2717          */
2718         tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2719
2720 }
2721
2722 #ifdef MONITOR
2723
2724 /*********************************************************************
2725  *
2726  *     tlan_phy_monitor
2727  *
2728  *     Returns:
2729  *            None
2730  *
2731  *     Params:
2732  *            dev            The device structure of this device.
2733  *
2734  *
2735  *     This function monitors PHY condition by reading the status
2736  *     register via the MII bus. This can be used to give info
2737  *     about link changes (up/down), and possible switch to alternate
2738  *     media.
2739  *
2740  *******************************************************************/
2741
2742 void tlan_phy_monitor(struct net_device *dev)
2743 {
2744         struct tlan_priv *priv = netdev_priv(dev);
2745         u16     phy;
2746         u16     phy_status;
2747
2748         phy = priv->phy[priv->phy_num];
2749
2750         /* Get PHY status register */
2751         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2752
2753         /* Check if link has been lost */
2754         if (!(phy_status & MII_GS_LINK)) {
2755                 if (priv->link) {
2756                         priv->link = 0;
2757                         printk(KERN_DEBUG "TLAN: %s has lost link\n",
2758                                dev->name);
2759                         netif_carrier_off(dev);
2760                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2761                         return;
2762                 }
2763         }
2764
2765         /* Link restablished? */
2766         if ((phy_status & MII_GS_LINK) && !priv->link) {
2767                 priv->link = 1;
2768                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2769                        dev->name);
2770                 netif_carrier_on(dev);
2771         }
2772
2773         /* Setup a new monitor */
2774         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2775 }
2776
2777 #endif /* MONITOR */
2778
2779
2780 /*****************************************************************************
2781 ******************************************************************************
2782
2783 ThunderLAN driver MII routines
2784
2785 these routines are based on the information in chap. 2 of the
2786 "ThunderLAN Programmer's Guide", pp. 15-24.
2787
2788 ******************************************************************************
2789 *****************************************************************************/
2790
2791
2792 /***************************************************************
2793  *      tlan_mii_read_reg
2794  *
2795  *      Returns:
2796  *              false   if ack received ok
2797  *              true    if no ack received or other error
2798  *
2799  *      Parms:
2800  *              dev             The device structure containing
2801  *                              The io address and interrupt count
2802  *                              for this device.
2803  *              phy             The address of the PHY to be queried.
2804  *              reg             The register whose contents are to be
2805  *                              retrieved.
2806  *              val             A pointer to a variable to store the
2807  *                              retrieved value.
2808  *
2809  *      This function uses the TLAN's MII bus to retrieve the contents
2810  *      of a given register on a PHY.  It sends the appropriate info
2811  *      and then reads the 16-bit register value from the MII bus via
2812  *      the TLAN SIO register.
2813  *
2814  **************************************************************/
2815
2816 static bool
2817 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2818 {
2819         u8      nack;
2820         u16     sio, tmp;
2821         u32     i;
2822         bool    err;
2823         int     minten;
2824         struct tlan_priv *priv = netdev_priv(dev);
2825         unsigned long flags = 0;
2826
2827         err = false;
2828         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2829         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2830
2831         if (!in_irq())
2832                 spin_lock_irqsave(&priv->lock, flags);
2833
2834         tlan_mii_sync(dev->base_addr);
2835
2836         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2837         if (minten)
2838                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2839
2840         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
2841         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* read  (10b) */
2842         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
2843         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
2844
2845
2846         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);        /* change direction */
2847
2848         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* clock idle bit */
2849         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2850         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* wait 300ns */
2851
2852         nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);   /* check for ACK */
2853         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);           /* finish ACK */
2854         if (nack) {                                     /* no ACK, so fake it */
2855                 for (i = 0; i < 16; i++) {
2856                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2857                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2858                 }
2859                 tmp = 0xffff;
2860                 err = true;
2861         } else {                                        /* ACK, so read data */
2862                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2863                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2864                         if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2865                                 tmp |= i;
2866                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2867                 }
2868         }
2869
2870
2871         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* idle cycle */
2872         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2873
2874         if (minten)
2875                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2876
2877         *val = tmp;
2878
2879         if (!in_irq())
2880                 spin_unlock_irqrestore(&priv->lock, flags);
2881
2882         return err;
2883
2884 }
2885
2886
2887
2888
2889 /***************************************************************
2890  *      tlan_mii_send_data
2891  *
2892  *      Returns:
2893  *              Nothing
2894  *      Parms:
2895  *              base_port       The base IO port of the adapter in
2896  *                              question.
2897  *              dev             The address of the PHY to be queried.
2898  *              data            The value to be placed on the MII bus.
2899  *              num_bits        The number of bits in data that are to
2900  *                              be placed on the MII bus.
2901  *
2902  *      This function sends on sequence of bits on the MII
2903  *      configuration bus.
2904  *
2905  **************************************************************/
2906
2907 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2908 {
2909         u16 sio;
2910         u32 i;
2911
2912         if (num_bits == 0)
2913                 return;
2914
2915         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2916         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2917         tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2918
2919         for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2920                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2921                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2922                 if (data & i)
2923                         tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2924                 else
2925                         tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2926                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2927                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2928         }
2929
2930 }
2931
2932
2933
2934
2935 /***************************************************************
2936  *      TLan_MiiSync
2937  *
2938  *      Returns:
2939  *              Nothing
2940  *      Parms:
2941  *              base_port       The base IO port of the adapter in
2942  *                              question.
2943  *
2944  *      This functions syncs all PHYs in terms of the MII configuration
2945  *      bus.
2946  *
2947  **************************************************************/
2948
2949 static void tlan_mii_sync(u16 base_port)
2950 {
2951         int i;
2952         u16 sio;
2953
2954         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2955         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2956
2957         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2958         for (i = 0; i < 32; i++) {
2959                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2960                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2961         }
2962
2963 }
2964
2965
2966
2967
2968 /***************************************************************
2969  *      tlan_mii_write_reg
2970  *
2971  *      Returns:
2972  *              Nothing
2973  *      Parms:
2974  *              dev             The device structure for the device
2975  *                              to write to.
2976  *              phy             The address of the PHY to be written to.
2977  *              reg             The register whose contents are to be
2978  *                              written.
2979  *              val             The value to be written to the register.
2980  *
2981  *      This function uses the TLAN's MII bus to write the contents of a
2982  *      given register on a PHY.  It sends the appropriate info and then
2983  *      writes the 16-bit register value from the MII configuration bus
2984  *      via the TLAN SIO register.
2985  *
2986  **************************************************************/
2987
2988 static void
2989 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2990 {
2991         u16     sio;
2992         int     minten;
2993         unsigned long flags = 0;
2994         struct tlan_priv *priv = netdev_priv(dev);
2995
2996         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2997         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2998
2999         if (!in_irq())
3000                 spin_lock_irqsave(&priv->lock, flags);
3001
3002         tlan_mii_sync(dev->base_addr);
3003
3004         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3005         if (minten)
3006                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3007
3008         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
3009         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* write (01b) */
3010         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
3011         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
3012
3013         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* send ACK */
3014         tlan_mii_send_data(dev->base_addr, val, 16);    /* send data */
3015
3016         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3017         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3018
3019         if (minten)
3020                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3021
3022         if (!in_irq())
3023                 spin_unlock_irqrestore(&priv->lock, flags);
3024
3025 }
3026
3027
3028
3029
3030 /*****************************************************************************
3031 ******************************************************************************
3032
3033 ThunderLAN driver eeprom routines
3034
3035 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3036 EEPROM.  these functions are based on information in microchip's
3037 data sheet.  I don't know how well this functions will work with
3038 other Eeproms.
3039
3040 ******************************************************************************
3041 *****************************************************************************/
3042
3043
3044 /***************************************************************
3045  *      tlan_ee_send_start
3046  *
3047  *      Returns:
3048  *              Nothing
3049  *      Parms:
3050  *              io_base         The IO port base address for the
3051  *                              TLAN device with the EEPROM to
3052  *                              use.
3053  *
3054  *      This function sends a start cycle to an EEPROM attached
3055  *      to a TLAN chip.
3056  *
3057  **************************************************************/
3058
3059 static void tlan_ee_send_start(u16 io_base)
3060 {
3061         u16     sio;
3062
3063         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3064         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3065
3066         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3067         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3068         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3069         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3070         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3071
3072 }
3073
3074
3075
3076
3077 /***************************************************************
3078  *      tlan_ee_send_byte
3079  *
3080  *      Returns:
3081  *              If the correct ack was received, 0, otherwise 1
3082  *      Parms:  io_base         The IO port base address for the
3083  *                              TLAN device with the EEPROM to
3084  *                              use.
3085  *              data            The 8 bits of information to
3086  *                              send to the EEPROM.
3087  *              stop            If TLAN_EEPROM_STOP is passed, a
3088  *                              stop cycle is sent after the
3089  *                              byte is sent after the ack is
3090  *                              read.
3091  *
3092  *      This function sends a byte on the serial EEPROM line,
3093  *      driving the clock to send each bit. The function then
3094  *      reverses transmission direction and reads an acknowledge
3095  *      bit.
3096  *
3097  **************************************************************/
3098
3099 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3100 {
3101         int     err;
3102         u8      place;
3103         u16     sio;
3104
3105         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3106         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3107
3108         /* Assume clock is low, tx is enabled; */
3109         for (place = 0x80; place != 0; place >>= 1) {
3110                 if (place & data)
3111                         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3112                 else
3113                         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3114                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3115                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3116         }
3117         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3118         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3119         err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3120         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3121         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3122
3123         if ((!err) && stop) {
3124                 /* STOP, raise data while clock is high */
3125                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3126                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3127                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3128         }
3129
3130         return err;
3131
3132 }
3133
3134
3135
3136
3137 /***************************************************************
3138  *      tlan_ee_receive_byte
3139  *
3140  *      Returns:
3141  *              Nothing
3142  *      Parms:
3143  *              io_base         The IO port base address for the
3144  *                              TLAN device with the EEPROM to
3145  *                              use.
3146  *              data            An address to a char to hold the
3147  *                              data sent from the EEPROM.
3148  *              stop            If TLAN_EEPROM_STOP is passed, a
3149  *                              stop cycle is sent after the
3150  *                              byte is received, and no ack is
3151  *                              sent.
3152  *
3153  *      This function receives 8 bits of data from the EEPROM
3154  *      over the serial link.  It then sends and ack bit, or no
3155  *      ack and a stop bit.  This function is used to retrieve
3156  *      data after the address of a byte in the EEPROM has been
3157  *      sent.
3158  *
3159  **************************************************************/
3160
3161 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3162 {
3163         u8  place;
3164         u16 sio;
3165
3166         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3167         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3168         *data = 0;
3169
3170         /* Assume clock is low, tx is enabled; */
3171         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3172         for (place = 0x80; place; place >>= 1) {
3173                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3174                 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3175                         *data |= place;
3176                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3177         }
3178
3179         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3180         if (!stop) {
3181                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3182                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3183                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3184         } else {
3185                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);  /* no ack = 1 (?) */
3186                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3187                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3188                 /* STOP, raise data while clock is high */
3189                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3190                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3191                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3192         }
3193
3194 }
3195
3196
3197
3198
3199 /***************************************************************
3200  *      tlan_ee_read_byte
3201  *
3202  *      Returns:
3203  *              No error = 0, else, the stage at which the error
3204  *              occurred.
3205  *      Parms:
3206  *              io_base         The IO port base address for the
3207  *                              TLAN device with the EEPROM to
3208  *                              use.
3209  *              ee_addr         The address of the byte in the
3210  *                              EEPROM whose contents are to be
3211  *                              retrieved.
3212  *              data            An address to a char to hold the
3213  *                              data obtained from the EEPROM.
3214  *
3215  *      This function reads a byte of information from an byte
3216  *      cell in the EEPROM.
3217  *
3218  **************************************************************/
3219
3220 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3221 {
3222         int err;
3223         struct tlan_priv *priv = netdev_priv(dev);
3224         unsigned long flags = 0;
3225         int ret = 0;
3226
3227         spin_lock_irqsave(&priv->lock, flags);
3228
3229         tlan_ee_send_start(dev->base_addr);
3230         err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3231         if (err) {
3232                 ret = 1;
3233                 goto fail;
3234         }
3235         err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3236         if (err) {
3237                 ret = 2;
3238                 goto fail;
3239         }
3240         tlan_ee_send_start(dev->base_addr);
3241         err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3242         if (err) {
3243                 ret = 3;
3244                 goto fail;
3245         }
3246         tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3247 fail:
3248         spin_unlock_irqrestore(&priv->lock, flags);
3249
3250         return ret;
3251
3252 }
3253
3254
3255