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