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 /* Turn on debugging.
  73  * See Documentation/networking/device_drivers/ti/tlan.txt for details
  74  */
  75 static  int             debug;
  76 module_param(debug, int, 0);
  77 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
  78
  79 static  const char tlan_signature[] = "TLAN";
  80 static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
  81 static  int tlan_have_pci;
  82 static  int tlan_have_eisa;
  83
  84 static const char * const media[] = {
  85         "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
  86         "100BaseTx-FD", "100BaseT4", NULL
  87 };
  88
  89 static struct board {
  90         const char      *device_label;
  91         u32             flags;
  92         u16             addr_ofs;
  93 } board_info[] = {
  94         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  95         { "Compaq Netelligent 10/100 TX PCI UTP",
  96           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  97         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  98         { "Compaq NetFlex-3/P",
  99           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 100         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 101         { "Compaq Netelligent Integrated 10/100 TX UTP",
 102           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 103         { "Compaq Netelligent Dual 10/100 TX PCI UTP",
 104           TLAN_ADAPTER_NONE, 0x83 },
 105         { "Compaq Netelligent 10/100 TX Embedded UTP",
 106           TLAN_ADAPTER_NONE, 0x83 },
 107         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 108         { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
 109           TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
 110         { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
 111           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 const struct pci_device_id 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(struct timer_list *t);
 178 static void     tlan_phy_monitor(struct timer_list *t);
 179
 180 static void     tlan_reset_lists(struct net_device *);
 181 static void     tlan_free_lists(struct net_device *);
 182 static void     tlan_print_dio(u16);
 183 static void     tlan_print_list(struct tlan_list *, char *, int);
 184 static void     tlan_read_and_clear_stats(struct net_device *, int);
 185 static void     tlan_reset_adapter(struct net_device *);
 186 static void     tlan_finish_reset(struct net_device *);
 187 static void     tlan_set_mac(struct net_device *, int areg, char *mac);
 188
 189 static void     tlan_phy_print(struct net_device *);
 190 static void     tlan_phy_detect(struct net_device *);
 191 static void     tlan_phy_power_down(struct net_device *);
 192 static void     tlan_phy_power_up(struct net_device *);
 193 static void     tlan_phy_reset(struct net_device *);
 194 static void     tlan_phy_start_link(struct net_device *);
 195 static void     tlan_phy_finish_auto_neg(struct net_device *);
 196
 197 /*
 198   static int    tlan_phy_nop(struct net_device *);
 199   static int    tlan_phy_internal_check(struct net_device *);
 200   static int    tlan_phy_internal_service(struct net_device *);
 201   static int    tlan_phy_dp83840a_check(struct net_device *);
 202 */
 203
 204 static bool     tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 205 static void     tlan_mii_send_data(u16, u32, unsigned);
 206 static void     tlan_mii_sync(u16);
 207 static void     tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 208
 209 static void     tlan_ee_send_start(u16);
 210 static int      tlan_ee_send_byte(u16, u8, int);
 211 static void     tlan_ee_receive_byte(u16, u8 *, int);
 212 static int      tlan_ee_read_byte(struct net_device *, u8, u8 *);
 213
 214
 215 static inline void
 216 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
 217 {
 218         unsigned long addr = (unsigned long)skb;
 219         tag->buffer[9].address = addr;
 220         tag->buffer[8].address = upper_32_bits(addr);
 221 }
 222
 223 static inline struct sk_buff *
 224 tlan_get_skb(const struct tlan_list *tag)
 225 {
 226         unsigned long addr;
 227
 228         addr = tag->buffer[9].address;
 229         addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
 230         return (struct sk_buff *) addr;
 231 }
 232
 233 static u32
 234 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
 235         NULL,
 236         tlan_handle_tx_eof,
 237         tlan_handle_stat_overflow,
 238         tlan_handle_rx_eof,
 239         tlan_handle_dummy,
 240         tlan_handle_tx_eoc,
 241         tlan_handle_status_check,
 242         tlan_handle_rx_eoc
 243 };
 244
 245 static inline void
 246 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
 247 {
 248         struct tlan_priv *priv = netdev_priv(dev);
 249         unsigned long flags = 0;
 250
 251         if (!in_irq())
 252                 spin_lock_irqsave(&priv->lock, flags);
 253         if (priv->timer.function != NULL &&
 254             priv->timer_type != TLAN_TIMER_ACTIVITY) {
 255                 if (!in_irq())
 256                         spin_unlock_irqrestore(&priv->lock, flags);
 257                 return;
 258         }
 259         priv->timer.function = tlan_timer;
 260         if (!in_irq())
 261                 spin_unlock_irqrestore(&priv->lock, flags);
 262
 263         priv->timer_set_at = jiffies;
 264         priv->timer_type = type;
 265         mod_timer(&priv->timer, jiffies + ticks);
 266
 267 }
 268
 269
 270 /*****************************************************************************
 271 ******************************************************************************
 272
 273 ThunderLAN driver primary functions
 274
 275 these functions are more or less common to all linux network drivers.
 276
 277 ******************************************************************************
 278 *****************************************************************************/
 279
 280
 281
 282
 283
 284 /***************************************************************
 285  *      tlan_remove_one
 286  *
 287  *      Returns:
 288  *              Nothing
 289  *      Parms:
 290  *              None
 291  *
 292  *      Goes through the TLanDevices list and frees the device
 293  *      structs and memory associated with each device (lists
 294  *      and buffers).  It also ureserves the IO port regions
 295  *      associated with this device.
 296  *
 297  **************************************************************/
 298
 299
 300 static void tlan_remove_one(struct pci_dev *pdev)
 301 {
 302         struct net_device *dev = pci_get_drvdata(pdev);
 303         struct tlan_priv        *priv = netdev_priv(dev);
 304
 305         unregister_netdev(dev);
 306
 307         if (priv->dma_storage) {
 308                 pci_free_consistent(priv->pci_dev,
 309                                     priv->dma_size, priv->dma_storage,
 310                                     priv->dma_storage_dma);
 311         }
 312
 313 #ifdef CONFIG_PCI
 314         pci_release_regions(pdev);
 315 #endif
 316
 317         free_netdev(dev);
 318
 319         cancel_work_sync(&priv->tlan_tqueue);
 320 }
 321
 322 static void tlan_start(struct net_device *dev)
 323 {
 324         tlan_reset_lists(dev);
 325         /* NOTE: It might not be necessary to read the stats before a
 326            reset if you don't care what the values are.
 327         */
 328         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 329         tlan_reset_adapter(dev);
 330         netif_wake_queue(dev);
 331 }
 332
 333 static void tlan_stop(struct net_device *dev)
 334 {
 335         struct tlan_priv *priv = netdev_priv(dev);
 336
 337         del_timer_sync(&priv->media_timer);
 338         tlan_read_and_clear_stats(dev, TLAN_RECORD);
 339         outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 340         /* Reset and power down phy */
 341         tlan_reset_adapter(dev);
 342         if (priv->timer.function != NULL) {
 343                 del_timer_sync(&priv->timer);
 344                 priv->timer.function = NULL;
 345         }
 346 }
 347
 348 #ifdef CONFIG_PM
 349
 350 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
 351 {
 352         struct net_device *dev = pci_get_drvdata(pdev);
 353
 354         if (netif_running(dev))
 355                 tlan_stop(dev);
 356
 357         netif_device_detach(dev);
 358         pci_save_state(pdev);
 359         pci_disable_device(pdev);
 360         pci_wake_from_d3(pdev, false);
 361         pci_set_power_state(pdev, PCI_D3hot);
 362
 363         return 0;
 364 }
 365
 366 static int tlan_resume(struct pci_dev *pdev)
 367 {
 368         struct net_device *dev = pci_get_drvdata(pdev);
 369         int rc = pci_enable_device(pdev);
 370
 371         if (rc)
 372                 return rc;
 373         pci_restore_state(pdev);
 374         pci_enable_wake(pdev, PCI_D0, 0);
 375         netif_device_attach(dev);
 376
 377         if (netif_running(dev))
 378                 tlan_start(dev);
 379
 380         return 0;
 381 }
 382
 383 #else /* CONFIG_PM */
 384
 385 #define tlan_suspend   NULL
 386 #define tlan_resume    NULL
 387
 388 #endif /* CONFIG_PM */
 389
 390
 391 static struct pci_driver tlan_driver = {
 392         .name           = "tlan",
 393         .id_table       = tlan_pci_tbl,
 394         .probe          = tlan_init_one,
 395         .remove         = tlan_remove_one,
 396         .suspend        = tlan_suspend,
 397         .resume         = tlan_resume,
 398 };
 399
 400 static int __init tlan_probe(void)
 401 {
 402         int rc = -ENODEV;
 403
 404         pr_info("%s", tlan_banner);
 405
 406         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 407
 408         /* Use new style PCI probing. Now the kernel will
 409            do most of this for us */
 410         rc = pci_register_driver(&tlan_driver);
 411
 412         if (rc != 0) {
 413                 pr_err("Could not register pci driver\n");
 414                 goto err_out_pci_free;
 415         }
 416
 417         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 418         tlan_eisa_probe();
 419
 420         pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 421                 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 422                 tlan_have_pci, tlan_have_eisa);
 423
 424         if (tlan_devices_installed == 0) {
 425                 rc = -ENODEV;
 426                 goto  err_out_pci_unreg;
 427         }
 428         return 0;
 429
 430 err_out_pci_unreg:
 431         pci_unregister_driver(&tlan_driver);
 432 err_out_pci_free:
 433         return rc;
 434 }
 435
 436
 437 static int tlan_init_one(struct pci_dev *pdev,
 438                                    const struct pci_device_id *ent)
 439 {
 440         return tlan_probe1(pdev, -1, -1, 0, ent);
 441 }
 442
 443
 444 /*
 445 ***************************************************************
 446 *       tlan_probe1
 447 *
 448 *       Returns:
 449 *               0 on success, error code on error
 450 *       Parms:
 451 *               none
 452 *
 453 *       The name is lower case to fit in with all the rest of
 454 *       the netcard_probe names.  This function looks for
 455 *       another TLan based adapter, setting it up with the
 456 *       allocated device struct if one is found.
 457 *       tlan_probe has been ported to the new net API and
 458 *       now allocates its own device structure. This function
 459 *       is also used by modules.
 460 *
 461 **************************************************************/
 462
 463 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
 464                        const struct pci_device_id *ent)
 465 {
 466
 467         struct net_device  *dev;
 468         struct tlan_priv  *priv;
 469         u16                device_id;
 470         int                reg, rc = -ENODEV;
 471
 472 #ifdef CONFIG_PCI
 473         if (pdev) {
 474                 rc = pci_enable_device(pdev);
 475                 if (rc)
 476                         return rc;
 477
 478                 rc = pci_request_regions(pdev, tlan_signature);
 479                 if (rc) {
 480                         pr_err("Could not reserve IO regions\n");
 481                         goto err_out;
 482                 }
 483         }
 484 #endif  /*  CONFIG_PCI  */
 485
 486         dev = alloc_etherdev(sizeof(struct tlan_priv));
 487         if (dev == NULL) {
 488                 rc = -ENOMEM;
 489                 goto err_out_regions;
 490         }
 491         SET_NETDEV_DEV(dev, &pdev->dev);
 492
 493         priv = netdev_priv(dev);
 494
 495         priv->pci_dev = pdev;
 496         priv->dev = dev;
 497
 498         /* Is this a PCI device? */
 499         if (pdev) {
 500                 u32                pci_io_base = 0;
 501
 502                 priv->adapter = &board_info[ent->driver_data];
 503
 504                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 505                 if (rc) {
 506                         pr_err("No suitable PCI mapping available\n");
 507                         goto err_out_free_dev;
 508                 }
 509
 510                 for (reg = 0; reg <= 5; reg++) {
 511                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 512                                 pci_io_base = pci_resource_start(pdev, reg);
 513                                 TLAN_DBG(TLAN_DEBUG_GNRL,
 514                                          "IO mapping is available at %x.\n",
 515                                          pci_io_base);
 516                                 break;
 517                         }
 518                 }
 519                 if (!pci_io_base) {
 520                         pr_err("No IO mappings available\n");
 521                         rc = -EIO;
 522                         goto err_out_free_dev;
 523                 }
 524
 525                 dev->base_addr = pci_io_base;
 526                 dev->irq = pdev->irq;
 527                 priv->adapter_rev = pdev->revision;
 528                 pci_set_master(pdev);
 529                 pci_set_drvdata(pdev, dev);
 530
 531         } else  {     /* EISA card */
 532                 /* This is a hack. We need to know which board structure
 533                  * is suited for this adapter */
 534                 device_id = inw(ioaddr + EISA_ID2);
 535                 if (device_id == 0x20F1) {
 536                         priv->adapter = &board_info[13]; /* NetFlex-3/E */
 537                         priv->adapter_rev = 23;         /* TLAN 2.3 */
 538                 } else {
 539                         priv->adapter = &board_info[14];
 540                         priv->adapter_rev = 10;         /* TLAN 1.0 */
 541                 }
 542                 dev->base_addr = ioaddr;
 543                 dev->irq = irq;
 544         }
 545
 546         /* Kernel parameters */
 547         if (dev->mem_start) {
 548                 priv->aui    = dev->mem_start & 0x01;
 549                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
 550                         : (dev->mem_start & 0x06) >> 1;
 551                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
 552                         : (dev->mem_start & 0x18) >> 3;
 553
 554                 if (priv->speed == 0x1)
 555                         priv->speed = TLAN_SPEED_10;
 556                 else if (priv->speed == 0x2)
 557                         priv->speed = TLAN_SPEED_100;
 558
 559                 debug = priv->debug = dev->mem_end;
 560         } else {
 561                 priv->aui    = aui[boards_found];
 562                 priv->speed  = speed[boards_found];
 563                 priv->duplex = duplex[boards_found];
 564                 priv->debug = debug;
 565         }
 566
 567         /* This will be used when we get an adapter error from
 568          * within our irq handler */
 569         INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
 570
 571         spin_lock_init(&priv->lock);
 572
 573         rc = tlan_init(dev);
 574         if (rc) {
 575                 pr_err("Could not set up device\n");
 576                 goto err_out_free_dev;
 577         }
 578
 579         rc = register_netdev(dev);
 580         if (rc) {
 581                 pr_err("Could not register device\n");
 582                 goto err_out_uninit;
 583         }
 584
 585
 586         tlan_devices_installed++;
 587         boards_found++;
 588
 589         /* pdev is NULL if this is an EISA device */
 590         if (pdev)
 591                 tlan_have_pci++;
 592         else {
 593                 priv->next_device = tlan_eisa_devices;
 594                 tlan_eisa_devices = dev;
 595                 tlan_have_eisa++;
 596         }
 597
 598         netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
 599                     (int)dev->irq,
 600                     (int)dev->base_addr,
 601                     priv->adapter->device_label,
 602                     priv->adapter_rev);
 603         return 0;
 604
 605 err_out_uninit:
 606         pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
 607                             priv->dma_storage_dma);
 608 err_out_free_dev:
 609         free_netdev(dev);
 610 err_out_regions:
 611 #ifdef CONFIG_PCI
 612         if (pdev)
 613                 pci_release_regions(pdev);
 614 err_out:
 615 #endif
 616         if (pdev)
 617                 pci_disable_device(pdev);
 618         return rc;
 619 }
 620
 621
 622 static void tlan_eisa_cleanup(void)
 623 {
 624         struct net_device *dev;
 625         struct tlan_priv *priv;
 626
 627         while (tlan_have_eisa) {
 628                 dev = tlan_eisa_devices;
 629                 priv = netdev_priv(dev);
 630                 if (priv->dma_storage) {
 631                         pci_free_consistent(priv->pci_dev, priv->dma_size,
 632                                             priv->dma_storage,
 633                                             priv->dma_storage_dma);
 634                 }
 635                 release_region(dev->base_addr, 0x10);
 636                 unregister_netdev(dev);
 637                 tlan_eisa_devices = priv->next_device;
 638                 free_netdev(dev);
 639                 tlan_have_eisa--;
 640         }
 641 }
 642
 643
 644 static void __exit tlan_exit(void)
 645 {
 646         pci_unregister_driver(&tlan_driver);
 647
 648         if (tlan_have_eisa)
 649                 tlan_eisa_cleanup();
 650
 651 }
 652
 653
 654 /* Module loading/unloading */
 655 module_init(tlan_probe);
 656 module_exit(tlan_exit);
 657
 658
 659
 660 /**************************************************************
 661  *      tlan_eisa_probe
 662  *
 663  *      Returns: 0 on success, 1 otherwise
 664  *
 665  *      Parms:   None
 666  *
 667  *
 668  *      This functions probes for EISA devices and calls
 669  *      TLan_probe1 when one is found.
 670  *
 671  *************************************************************/
 672
 673 static void  __init tlan_eisa_probe(void)
 674 {
 675         long    ioaddr;
 676         int     rc = -ENODEV;
 677         int     irq;
 678         u16     device_id;
 679
 680         if (!EISA_bus) {
 681                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 682                 return;
 683         }
 684
 685         /* Loop through all slots of the EISA bus */
 686         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 687
 688                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 689                          (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
 690                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 691                          (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
 692
 693
 694                 TLAN_DBG(TLAN_DEBUG_PROBE,
 695                          "Probing for EISA adapter at IO: 0x%4x : ",
 696                          (int) ioaddr);
 697                 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
 698                         goto out;
 699
 700                 if (inw(ioaddr + EISA_ID) != 0x110E) {
 701                         release_region(ioaddr, 0x10);
 702                         goto out;
 703                 }
 704
 705                 device_id = inw(ioaddr + EISA_ID2);
 706                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
 707                         release_region(ioaddr, 0x10);
 708                         goto out;
 709                 }
 710
 711                 /* check if adapter is enabled */
 712                 if (inb(ioaddr + EISA_CR) != 0x1) {
 713                         release_region(ioaddr, 0x10);
 714                         goto out2;
 715                 }
 716
 717                 if (debug == 0x10)
 718                         pr_info("Found one\n");
 719
 720
 721                 /* Get irq from board */
 722                 switch (inb(ioaddr + 0xcc0)) {
 723                 case(0x10):
 724                         irq = 5;
 725                         break;
 726                 case(0x20):
 727                         irq = 9;
 728                         break;
 729                 case(0x40):
 730                         irq = 10;
 731                         break;
 732                 case(0x80):
 733                         irq = 11;
 734                         break;
 735                 default:
 736                         goto out;
 737                 }
 738
 739
 740                 /* Setup the newly found eisa adapter */
 741                 rc = tlan_probe1(NULL, ioaddr, irq,
 742                                  12, NULL);
 743                 continue;
 744
 745 out:
 746                 if (debug == 0x10)
 747                         pr_info("None found\n");
 748                 continue;
 749
 750 out2:
 751                 if (debug == 0x10)
 752                         pr_info("Card found but it is not enabled, skipping\n");
 753                 continue;
 754
 755         }
 756
 757 }
 758
 759 #ifdef CONFIG_NET_POLL_CONTROLLER
 760 static void tlan_poll(struct net_device *dev)
 761 {
 762         disable_irq(dev->irq);
 763         tlan_handle_interrupt(dev->irq, dev);
 764         enable_irq(dev->irq);
 765 }
 766 #endif
 767
 768 static const struct net_device_ops tlan_netdev_ops = {
 769         .ndo_open               = tlan_open,
 770         .ndo_stop               = tlan_close,
 771         .ndo_start_xmit         = tlan_start_tx,
 772         .ndo_tx_timeout         = tlan_tx_timeout,
 773         .ndo_get_stats          = tlan_get_stats,
 774         .ndo_set_rx_mode        = tlan_set_multicast_list,
 775         .ndo_do_ioctl           = tlan_ioctl,
 776         .ndo_set_mac_address    = eth_mac_addr,
 777         .ndo_validate_addr      = eth_validate_addr,
 778 #ifdef CONFIG_NET_POLL_CONTROLLER
 779         .ndo_poll_controller     = tlan_poll,
 780 #endif
 781 };
 782
 783 static void tlan_get_drvinfo(struct net_device *dev,
 784                              struct ethtool_drvinfo *info)
 785 {
 786         struct tlan_priv *priv = netdev_priv(dev);
 787
 788         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 789         if (priv->pci_dev)
 790                 strlcpy(info->bus_info, pci_name(priv->pci_dev),
 791                         sizeof(info->bus_info));
 792         else
 793                 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
 794 }
 795
 796 static int tlan_get_eeprom_len(struct net_device *dev)
 797 {
 798         return TLAN_EEPROM_SIZE;
 799 }
 800
 801 static int tlan_get_eeprom(struct net_device *dev,
 802                            struct ethtool_eeprom *eeprom, u8 *data)
 803 {
 804         int i;
 805
 806         for (i = 0; i < TLAN_EEPROM_SIZE; i++)
 807                 if (tlan_ee_read_byte(dev, i, &data[i]))
 808                         return -EIO;
 809
 810         return 0;
 811 }
 812
 813 static const struct ethtool_ops tlan_ethtool_ops = {
 814         .get_drvinfo    = tlan_get_drvinfo,
 815         .get_link       = ethtool_op_get_link,
 816         .get_eeprom_len = tlan_get_eeprom_len,
 817         .get_eeprom     = tlan_get_eeprom,
 818 };
 819
 820 /***************************************************************
 821  *      tlan_init
 822  *
 823  *      Returns:
 824  *              0 on success, error code otherwise.
 825  *      Parms:
 826  *              dev     The structure of the device to be
 827  *                      init'ed.
 828  *
 829  *      This function completes the initialization of the
 830  *      device structure and driver.  It reserves the IO
 831  *      addresses, allocates memory for the lists and bounce
 832  *      buffers, retrieves the MAC address from the eeprom
 833  *      and assignes the device's methods.
 834  *
 835  **************************************************************/
 836
 837 static int tlan_init(struct net_device *dev)
 838 {
 839         int             dma_size;
 840         int             err;
 841         int             i;
 842         struct tlan_priv        *priv;
 843
 844         priv = netdev_priv(dev);
 845
 846         dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
 847                 * (sizeof(struct tlan_list));
 848         priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
 849                                                  dma_size,
 850                                                  &priv->dma_storage_dma);
 851         priv->dma_size = dma_size;
 852
 853         if (priv->dma_storage == NULL) {
 854                 pr_err("Could not allocate lists and buffers for %s\n",
 855                        dev->name);
 856                 return -ENOMEM;
 857         }
 858         priv->rx_list = (struct tlan_list *)
 859                 ALIGN((unsigned long)priv->dma_storage, 8);
 860         priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
 861         priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
 862         priv->tx_list_dma =
 863                 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
 864
 865         err = 0;
 866         for (i = 0; i < ETH_ALEN; i++)
 867                 err |= tlan_ee_read_byte(dev,
 868                                          (u8) priv->adapter->addr_ofs + i,
 869                                          (u8 *) &dev->dev_addr[i]);
 870         if (err) {
 871                 pr_err("%s: Error reading MAC from eeprom: %d\n",
 872                        dev->name, err);
 873         }
 874         /* Olicom OC-2325/OC-2326 have the address byte-swapped */
 875         if (priv->adapter->addr_ofs == 0xf8) {
 876                 for (i = 0; i < ETH_ALEN; i += 2) {
 877                         char tmp = dev->dev_addr[i];
 878                         dev->dev_addr[i] = dev->dev_addr[i + 1];
 879                         dev->dev_addr[i + 1] = tmp;
 880                 }
 881         }
 882
 883         netif_carrier_off(dev);
 884
 885         /* Device methods */
 886         dev->netdev_ops = &tlan_netdev_ops;
 887         dev->ethtool_ops = &tlan_ethtool_ops;
 888         dev->watchdog_timeo = TX_TIMEOUT;
 889
 890         return 0;
 891
 892 }
 893
 894
 895
 896
 897 /***************************************************************
 898  *      tlan_open
 899  *
 900  *      Returns:
 901  *              0 on success, error code otherwise.
 902  *      Parms:
 903  *              dev     Structure of device to be opened.
 904  *
 905  *      This routine puts the driver and TLAN adapter in a
 906  *      state where it is ready to send and receive packets.
 907  *      It allocates the IRQ, resets and brings the adapter
 908  *      out of reset, and allows interrupts.  It also delays
 909  *      the startup for autonegotiation or sends a Rx GO
 910  *      command to the adapter, as appropriate.
 911  *
 912  **************************************************************/
 913
 914 static int tlan_open(struct net_device *dev)
 915 {
 916         struct tlan_priv        *priv = netdev_priv(dev);
 917         int             err;
 918
 919         priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
 920         err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
 921                           dev->name, dev);
 922
 923         if (err) {
 924                 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
 925                            dev->irq);
 926                 return err;
 927         }
 928
 929         timer_setup(&priv->timer, NULL, 0);
 930         timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
 931
 932         tlan_start(dev);
 933
 934         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
 935                  dev->name, priv->tlan_rev);
 936
 937         return 0;
 938
 939 }
 940
 941
 942
 943 /**************************************************************
 944  *      tlan_ioctl
 945  *
 946  *      Returns:
 947  *              0 on success, error code otherwise
 948  *      Params:
 949  *              dev     structure of device to receive ioctl.
 950  *
 951  *              rq      ifreq structure to hold userspace data.
 952  *
 953  *              cmd     ioctl command.
 954  *
 955  *
 956  *************************************************************/
 957
 958 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 959 {
 960         struct tlan_priv *priv = netdev_priv(dev);
 961         struct mii_ioctl_data *data = if_mii(rq);
 962         u32 phy   = priv->phy[priv->phy_num];
 963
 964         if (!priv->phy_online)
 965                 return -EAGAIN;
 966
 967         switch (cmd) {
 968         case SIOCGMIIPHY:               /* get address of MII PHY in use. */
 969                 data->phy_id = phy;
 970                 /* fall through */
 971
 972
 973         case SIOCGMIIREG:               /* read MII PHY register. */
 974                 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
 975                                   data->reg_num & 0x1f, &data->val_out);
 976                 return 0;
 977
 978
 979         case SIOCSMIIREG:               /* write MII PHY register. */
 980                 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
 981                                    data->reg_num & 0x1f, data->val_in);
 982                 return 0;
 983         default:
 984                 return -EOPNOTSUPP;
 985         }
 986 }
 987
 988
 989 /***************************************************************
 990  *      tlan_tx_timeout
 991  *
 992  *      Returns: nothing
 993  *
 994  *      Params:
 995  *              dev     structure of device which timed out
 996  *                      during transmit.
 997  *
 998  **************************************************************/
 999
1000 static void tlan_tx_timeout(struct net_device *dev)
1001 {
1002
1003         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1004
1005         /* Ok so we timed out, lets see what we can do about it...*/
1006         tlan_free_lists(dev);
1007         tlan_reset_lists(dev);
1008         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1009         tlan_reset_adapter(dev);
1010         netif_trans_update(dev); /* prevent tx timeout */
1011         netif_wake_queue(dev);
1012
1013 }
1014
1015
1016 /***************************************************************
1017  *      tlan_tx_timeout_work
1018  *
1019  *      Returns: nothing
1020  *
1021  *      Params:
1022  *              work    work item of device which timed out
1023  *
1024  **************************************************************/
1025
1026 static void tlan_tx_timeout_work(struct work_struct *work)
1027 {
1028         struct tlan_priv        *priv =
1029                 container_of(work, struct tlan_priv, tlan_tqueue);
1030
1031         tlan_tx_timeout(priv->dev);
1032 }
1033
1034
1035
1036 /***************************************************************
1037  *      tlan_start_tx
1038  *
1039  *      Returns:
1040  *              0 on success, non-zero on failure.
1041  *      Parms:
1042  *              skb     A pointer to the sk_buff containing the
1043  *                      frame to be sent.
1044  *              dev     The device to send the data on.
1045  *
1046  *      This function adds a frame to the Tx list to be sent
1047  *      ASAP.  First it verifies that the adapter is ready and
1048  *      there is room in the queue.  Then it sets up the next
1049  *      available list, copies the frame to the corresponding
1050  *      buffer.  If the adapter Tx channel is idle, it gives
1051  *      the adapter a Tx Go command on the list, otherwise it
1052  *      sets the forward address of the previous list to point
1053  *      to this one.  Then it frees the sk_buff.
1054  *
1055  **************************************************************/
1056
1057 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1058 {
1059         struct tlan_priv *priv = netdev_priv(dev);
1060         dma_addr_t      tail_list_phys;
1061         struct tlan_list        *tail_list;
1062         unsigned long   flags;
1063         unsigned int    txlen;
1064
1065         if (!priv->phy_online) {
1066                 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1067                          dev->name);
1068                 dev_kfree_skb_any(skb);
1069                 return NETDEV_TX_OK;
1070         }
1071
1072         if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1073                 return NETDEV_TX_OK;
1074         txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1075
1076         tail_list = priv->tx_list + priv->tx_tail;
1077         tail_list_phys =
1078                 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1079
1080         if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1081                 TLAN_DBG(TLAN_DEBUG_TX,
1082                          "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1083                          dev->name, priv->tx_head, priv->tx_tail);
1084                 netif_stop_queue(dev);
1085                 priv->tx_busy_count++;
1086                 return NETDEV_TX_BUSY;
1087         }
1088
1089         tail_list->forward = 0;
1090
1091         tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1092                                                       skb->data, txlen,
1093                                                       PCI_DMA_TODEVICE);
1094         tlan_store_skb(tail_list, skb);
1095
1096         tail_list->frame_size = (u16) txlen;
1097         tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1098         tail_list->buffer[1].count = 0;
1099         tail_list->buffer[1].address = 0;
1100
1101         spin_lock_irqsave(&priv->lock, flags);
1102         tail_list->c_stat = TLAN_CSTAT_READY;
1103         if (!priv->tx_in_progress) {
1104                 priv->tx_in_progress = 1;
1105                 TLAN_DBG(TLAN_DEBUG_TX,
1106                          "TRANSMIT:  Starting TX on buffer %d\n",
1107                          priv->tx_tail);
1108                 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1109                 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1110         } else {
1111                 TLAN_DBG(TLAN_DEBUG_TX,
1112                          "TRANSMIT:  Adding buffer %d to TX channel\n",
1113                          priv->tx_tail);
1114                 if (priv->tx_tail == 0) {
1115                         (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1116                                 = tail_list_phys;
1117                 } else {
1118                         (priv->tx_list + (priv->tx_tail - 1))->forward
1119                                 = tail_list_phys;
1120                 }
1121         }
1122         spin_unlock_irqrestore(&priv->lock, flags);
1123
1124         CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1125
1126         return NETDEV_TX_OK;
1127
1128 }
1129
1130
1131
1132
1133 /***************************************************************
1134  *      tlan_handle_interrupt
1135  *
1136  *      Returns:
1137  *              Nothing
1138  *      Parms:
1139  *              irq     The line on which the interrupt
1140  *                      occurred.
1141  *              dev_id  A pointer to the device assigned to
1142  *                      this irq line.
1143  *
1144  *      This function handles an interrupt generated by its
1145  *      assigned TLAN adapter.  The function deactivates
1146  *      interrupts on its adapter, records the type of
1147  *      interrupt, executes the appropriate subhandler, and
1148  *      acknowdges the interrupt to the adapter (thus
1149  *      re-enabling adapter interrupts.
1150  *
1151  **************************************************************/
1152
1153 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1154 {
1155         struct net_device       *dev = dev_id;
1156         struct tlan_priv *priv = netdev_priv(dev);
1157         u16             host_int;
1158         u16             type;
1159
1160         spin_lock(&priv->lock);
1161
1162         host_int = inw(dev->base_addr + TLAN_HOST_INT);
1163         type = (host_int & TLAN_HI_IT_MASK) >> 2;
1164         if (type) {
1165                 u32     ack;
1166                 u32     host_cmd;
1167
1168                 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1169                 ack = tlan_int_vector[type](dev, host_int);
1170
1171                 if (ack) {
1172                         host_cmd = TLAN_HC_ACK | ack | (type << 18);
1173                         outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1174                 }
1175         }
1176
1177         spin_unlock(&priv->lock);
1178
1179         return IRQ_RETVAL(type);
1180 }
1181
1182
1183
1184
1185 /***************************************************************
1186  *      tlan_close
1187  *
1188  *      Returns:
1189  *              An error code.
1190  *      Parms:
1191  *              dev     The device structure of the device to
1192  *                      close.
1193  *
1194  *      This function shuts down the adapter.  It records any
1195  *      stats, puts the adapter into reset state, deactivates
1196  *      its time as needed, and frees the irq it is using.
1197  *
1198  **************************************************************/
1199
1200 static int tlan_close(struct net_device *dev)
1201 {
1202         tlan_stop(dev);
1203
1204         free_irq(dev->irq, dev);
1205         tlan_free_lists(dev);
1206         TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1207
1208         return 0;
1209
1210 }
1211
1212
1213
1214
1215 /***************************************************************
1216  *      tlan_get_stats
1217  *
1218  *      Returns:
1219  *              A pointer to the device's statistics structure.
1220  *      Parms:
1221  *              dev     The device structure to return the
1222  *                      stats for.
1223  *
1224  *      This function updates the devices statistics by reading
1225  *      the TLAN chip's onboard registers.  Then it returns the
1226  *      address of the statistics structure.
1227  *
1228  **************************************************************/
1229
1230 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1231 {
1232         struct tlan_priv        *priv = netdev_priv(dev);
1233         int i;
1234
1235         /* Should only read stats if open ? */
1236         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1237
1238         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1239                  priv->rx_eoc_count);
1240         TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1241                  priv->tx_busy_count);
1242         if (debug & TLAN_DEBUG_GNRL) {
1243                 tlan_print_dio(dev->base_addr);
1244                 tlan_phy_print(dev);
1245         }
1246         if (debug & TLAN_DEBUG_LIST) {
1247                 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1248                         tlan_print_list(priv->rx_list + i, "RX", i);
1249                 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1250                         tlan_print_list(priv->tx_list + i, "TX", i);
1251         }
1252
1253         return &dev->stats;
1254
1255 }
1256
1257
1258
1259
1260 /***************************************************************
1261  *      tlan_set_multicast_list
1262  *
1263  *      Returns:
1264  *              Nothing
1265  *      Parms:
1266  *              dev     The device structure to set the
1267  *                      multicast list for.
1268  *
1269  *      This function sets the TLAN adaptor to various receive
1270  *      modes.  If the IFF_PROMISC flag is set, promiscuous
1271  *      mode is acitviated.  Otherwise, promiscuous mode is
1272  *      turned off.  If the IFF_ALLMULTI flag is set, then
1273  *      the hash table is set to receive all group addresses.
1274  *      Otherwise, the first three multicast addresses are
1275  *      stored in AREG_1-3, and the rest are selected via the
1276  *      hash table, as necessary.
1277  *
1278  **************************************************************/
1279
1280 static void tlan_set_multicast_list(struct net_device *dev)
1281 {
1282         struct netdev_hw_addr *ha;
1283         u32                     hash1 = 0;
1284         u32                     hash2 = 0;
1285         int                     i;
1286         u32                     offset;
1287         u8                      tmp;
1288
1289         if (dev->flags & IFF_PROMISC) {
1290                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1291                 tlan_dio_write8(dev->base_addr,
1292                                 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1293         } else {
1294                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1295                 tlan_dio_write8(dev->base_addr,
1296                                 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1297                 if (dev->flags & IFF_ALLMULTI) {
1298                         for (i = 0; i < 3; i++)
1299                                 tlan_set_mac(dev, i + 1, NULL);
1300                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1301                                          0xffffffff);
1302                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1303                                          0xffffffff);
1304                 } else {
1305                         i = 0;
1306                         netdev_for_each_mc_addr(ha, dev) {
1307                                 if (i < 3) {
1308                                         tlan_set_mac(dev, i + 1,
1309                                                      (char *) &ha->addr);
1310                                 } else {
1311                                         offset =
1312                                                 tlan_hash_func((u8 *)&ha->addr);
1313                                         if (offset < 32)
1314                                                 hash1 |= (1 << offset);
1315                                         else
1316                                                 hash2 |= (1 << (offset - 32));
1317                                 }
1318                                 i++;
1319                         }
1320                         for ( ; i < 3; i++)
1321                                 tlan_set_mac(dev, i + 1, NULL);
1322                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1323                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1324                 }
1325         }
1326
1327 }
1328
1329
1330
1331 /*****************************************************************************
1332 ******************************************************************************
1333
1334 ThunderLAN driver interrupt vectors and table
1335
1336 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1337 Programmer's Guide" for more informations on handling interrupts
1338 generated by TLAN based adapters.
1339
1340 ******************************************************************************
1341 *****************************************************************************/
1342
1343
1344
1345
1346 /***************************************************************
1347  *      tlan_handle_tx_eof
1348  *
1349  *      Returns:
1350  *              1
1351  *      Parms:
1352  *              dev             Device assigned the IRQ that was
1353  *                              raised.
1354  *              host_int        The contents of the HOST_INT
1355  *                              port.
1356  *
1357  *      This function handles Tx EOF interrupts which are raised
1358  *      by the adapter when it has completed sending the
1359  *      contents of a buffer.  If detemines which list/buffer
1360  *      was completed and resets it.  If the buffer was the last
1361  *      in the channel (EOC), then the function checks to see if
1362  *      another buffer is ready to send, and if so, sends a Tx
1363  *      Go command.  Finally, the driver activates/continues the
1364  *      activity LED.
1365  *
1366  **************************************************************/
1367
1368 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1369 {
1370         struct tlan_priv        *priv = netdev_priv(dev);
1371         int             eoc = 0;
1372         struct tlan_list        *head_list;
1373         dma_addr_t      head_list_phys;
1374         u32             ack = 0;
1375         u16             tmp_c_stat;
1376
1377         TLAN_DBG(TLAN_DEBUG_TX,
1378                  "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1379                  priv->tx_head, priv->tx_tail);
1380         head_list = priv->tx_list + priv->tx_head;
1381
1382         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1383                && (ack < 255)) {
1384                 struct sk_buff *skb = tlan_get_skb(head_list);
1385
1386                 ack++;
1387                 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1388                                  max(skb->len,
1389                                      (unsigned int)TLAN_MIN_FRAME_SIZE),
1390                                  PCI_DMA_TODEVICE);
1391                 dev_kfree_skb_any(skb);
1392                 head_list->buffer[8].address = 0;
1393                 head_list->buffer[9].address = 0;
1394
1395                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1396                         eoc = 1;
1397
1398                 dev->stats.tx_bytes += head_list->frame_size;
1399
1400                 head_list->c_stat = TLAN_CSTAT_UNUSED;
1401                 netif_start_queue(dev);
1402                 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1403                 head_list = priv->tx_list + priv->tx_head;
1404         }
1405
1406         if (!ack)
1407                 netdev_info(dev,
1408                             "Received interrupt for uncompleted TX frame\n");
1409
1410         if (eoc) {
1411                 TLAN_DBG(TLAN_DEBUG_TX,
1412                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1413                          priv->tx_head, priv->tx_tail);
1414                 head_list = priv->tx_list + priv->tx_head;
1415                 head_list_phys = priv->tx_list_dma
1416                         + sizeof(struct tlan_list)*priv->tx_head;
1417                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1418                     == TLAN_CSTAT_READY) {
1419                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1420                         ack |= TLAN_HC_GO;
1421                 } else {
1422                         priv->tx_in_progress = 0;
1423                 }
1424         }
1425
1426         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1427                 tlan_dio_write8(dev->base_addr,
1428                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1429                 if (priv->timer.function == NULL) {
1430                         priv->timer.function = tlan_timer;
1431                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1432                         priv->timer_set_at = jiffies;
1433                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1434                         add_timer(&priv->timer);
1435                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1436                         priv->timer_set_at = jiffies;
1437                 }
1438         }
1439
1440         return ack;
1441
1442 }
1443
1444
1445
1446
1447 /***************************************************************
1448  *      TLan_HandleStatOverflow
1449  *
1450  *      Returns:
1451  *              1
1452  *      Parms:
1453  *              dev             Device assigned the IRQ that was
1454  *                              raised.
1455  *              host_int        The contents of the HOST_INT
1456  *                              port.
1457  *
1458  *      This function handles the Statistics Overflow interrupt
1459  *      which means that one or more of the TLAN statistics
1460  *      registers has reached 1/2 capacity and needs to be read.
1461  *
1462  **************************************************************/
1463
1464 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1465 {
1466         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1467
1468         return 1;
1469
1470 }
1471
1472
1473
1474
1475 /***************************************************************
1476  *      TLan_HandleRxEOF
1477  *
1478  *      Returns:
1479  *              1
1480  *      Parms:
1481  *              dev             Device assigned the IRQ that was
1482  *                              raised.
1483  *              host_int        The contents of the HOST_INT
1484  *                              port.
1485  *
1486  *      This function handles the Rx EOF interrupt which
1487  *      indicates a frame has been received by the adapter from
1488  *      the net and the frame has been transferred to memory.
1489  *      The function determines the bounce buffer the frame has
1490  *      been loaded into, creates a new sk_buff big enough to
1491  *      hold the frame, and sends it to protocol stack.  It
1492  *      then resets the used buffer and appends it to the end
1493  *      of the list.  If the frame was the last in the Rx
1494  *      channel (EOC), the function restarts the receive channel
1495  *      by sending an Rx Go command to the adapter.  Then it
1496  *      activates/continues the activity LED.
1497  *
1498  **************************************************************/
1499
1500 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1501 {
1502         struct tlan_priv        *priv = netdev_priv(dev);
1503         u32             ack = 0;
1504         int             eoc = 0;
1505         struct tlan_list        *head_list;
1506         struct sk_buff  *skb;
1507         struct tlan_list        *tail_list;
1508         u16             tmp_c_stat;
1509         dma_addr_t      head_list_phys;
1510
1511         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1512                  priv->rx_head, priv->rx_tail);
1513         head_list = priv->rx_list + priv->rx_head;
1514         head_list_phys =
1515                 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1516
1517         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1518                && (ack < 255)) {
1519                 dma_addr_t frame_dma = head_list->buffer[0].address;
1520                 u32 frame_size = head_list->frame_size;
1521                 struct sk_buff *new_skb;
1522
1523                 ack++;
1524                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1525                         eoc = 1;
1526
1527                 new_skb = netdev_alloc_skb_ip_align(dev,
1528                                                     TLAN_MAX_FRAME_SIZE + 5);
1529                 if (!new_skb)
1530                         goto drop_and_reuse;
1531
1532                 skb = tlan_get_skb(head_list);
1533                 pci_unmap_single(priv->pci_dev, frame_dma,
1534                                  TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1535                 skb_put(skb, frame_size);
1536
1537                 dev->stats.rx_bytes += frame_size;
1538
1539                 skb->protocol = eth_type_trans(skb, dev);
1540                 netif_rx(skb);
1541
1542                 head_list->buffer[0].address =
1543                         pci_map_single(priv->pci_dev, new_skb->data,
1544                                        TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1545
1546                 tlan_store_skb(head_list, new_skb);
1547 drop_and_reuse:
1548                 head_list->forward = 0;
1549                 head_list->c_stat = 0;
1550                 tail_list = priv->rx_list + priv->rx_tail;
1551                 tail_list->forward = head_list_phys;
1552
1553                 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1554                 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1555                 head_list = priv->rx_list + priv->rx_head;
1556                 head_list_phys = priv->rx_list_dma
1557                         + sizeof(struct tlan_list)*priv->rx_head;
1558         }
1559
1560         if (!ack)
1561                 netdev_info(dev,
1562                             "Received interrupt for uncompleted RX frame\n");
1563
1564
1565         if (eoc) {
1566                 TLAN_DBG(TLAN_DEBUG_RX,
1567                          "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1568                          priv->rx_head, priv->rx_tail);
1569                 head_list = priv->rx_list + priv->rx_head;
1570                 head_list_phys = priv->rx_list_dma
1571                         + sizeof(struct tlan_list)*priv->rx_head;
1572                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1573                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1574                 priv->rx_eoc_count++;
1575         }
1576
1577         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1578                 tlan_dio_write8(dev->base_addr,
1579                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1580                 if (priv->timer.function == NULL)  {
1581                         priv->timer.function = tlan_timer;
1582                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1583                         priv->timer_set_at = jiffies;
1584                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1585                         add_timer(&priv->timer);
1586                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1587                         priv->timer_set_at = jiffies;
1588                 }
1589         }
1590
1591         return ack;
1592
1593 }
1594
1595
1596
1597
1598 /***************************************************************
1599  *      tlan_handle_dummy
1600  *
1601  *      Returns:
1602  *              1
1603  *      Parms:
1604  *              dev             Device assigned the IRQ that was
1605  *                              raised.
1606  *              host_int        The contents of the HOST_INT
1607  *                              port.
1608  *
1609  *      This function handles the Dummy interrupt, which is
1610  *      raised whenever a test interrupt is generated by setting
1611  *      the Req_Int bit of HOST_CMD to 1.
1612  *
1613  **************************************************************/
1614
1615 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1616 {
1617         netdev_info(dev, "Test interrupt\n");
1618         return 1;
1619
1620 }
1621
1622
1623
1624
1625 /***************************************************************
1626  *      tlan_handle_tx_eoc
1627  *
1628  *      Returns:
1629  *              1
1630  *      Parms:
1631  *              dev             Device assigned the IRQ that was
1632  *                              raised.
1633  *              host_int        The contents of the HOST_INT
1634  *                              port.
1635  *
1636  *      This driver is structured to determine EOC occurrences by
1637  *      reading the CSTAT member of the list structure.  Tx EOC
1638  *      interrupts are disabled via the DIO INTDIS register.
1639  *      However, TLAN chips before revision 3.0 didn't have this
1640  *      functionality, so process EOC events if this is the
1641  *      case.
1642  *
1643  **************************************************************/
1644
1645 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1646 {
1647         struct tlan_priv        *priv = netdev_priv(dev);
1648         struct tlan_list                *head_list;
1649         dma_addr_t              head_list_phys;
1650         u32                     ack = 1;
1651
1652         if (priv->tlan_rev < 0x30) {
1653                 TLAN_DBG(TLAN_DEBUG_TX,
1654                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1655                          priv->tx_head, priv->tx_tail);
1656                 head_list = priv->tx_list + priv->tx_head;
1657                 head_list_phys = priv->tx_list_dma
1658                         + sizeof(struct tlan_list)*priv->tx_head;
1659                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1660                     == TLAN_CSTAT_READY) {
1661                         netif_stop_queue(dev);
1662                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1663                         ack |= TLAN_HC_GO;
1664                 } else {
1665                         priv->tx_in_progress = 0;
1666                 }
1667         }
1668
1669         return ack;
1670
1671 }
1672
1673
1674
1675
1676 /***************************************************************
1677  *      tlan_handle_status_check
1678  *
1679  *      Returns:
1680  *              0 if Adapter check, 1 if Network Status check.
1681  *      Parms:
1682  *              dev             Device assigned the IRQ that was
1683  *                              raised.
1684  *              host_int        The contents of the HOST_INT
1685  *                              port.
1686  *
1687  *      This function handles Adapter Check/Network Status
1688  *      interrupts generated by the adapter.  It checks the
1689  *      vector in the HOST_INT register to determine if it is
1690  *      an Adapter Check interrupt.  If so, it resets the
1691  *      adapter.  Otherwise it clears the status registers
1692  *      and services the PHY.
1693  *
1694  **************************************************************/
1695
1696 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1697 {
1698         struct tlan_priv        *priv = netdev_priv(dev);
1699         u32             ack;
1700         u32             error;
1701         u8              net_sts;
1702         u32             phy;
1703         u16             tlphy_ctl;
1704         u16             tlphy_sts;
1705
1706         ack = 1;
1707         if (host_int & TLAN_HI_IV_MASK) {
1708                 netif_stop_queue(dev);
1709                 error = inl(dev->base_addr + TLAN_CH_PARM);
1710                 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1711                 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1712                 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1713
1714                 schedule_work(&priv->tlan_tqueue);
1715
1716                 netif_wake_queue(dev);
1717                 ack = 0;
1718         } else {
1719                 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1720                 phy = priv->phy[priv->phy_num];
1721
1722                 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1723                 if (net_sts) {
1724                         tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1725                         TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1726                                  dev->name, (unsigned) net_sts);
1727                 }
1728                 if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1729                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1730                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1731                         if (!(tlphy_sts & TLAN_TS_POLOK) &&
1732                             !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1733                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1734                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1735                                                    tlphy_ctl);
1736                         } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1737                                    (tlphy_ctl & TLAN_TC_SWAPOL)) {
1738                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1739                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1740                                                    tlphy_ctl);
1741                         }
1742
1743                         if (debug)
1744                                 tlan_phy_print(dev);
1745                 }
1746         }
1747
1748         return ack;
1749
1750 }
1751
1752
1753
1754
1755 /***************************************************************
1756  *      tlan_handle_rx_eoc
1757  *
1758  *      Returns:
1759  *              1
1760  *      Parms:
1761  *              dev             Device assigned the IRQ that was
1762  *                              raised.
1763  *              host_int        The contents of the HOST_INT
1764  *                              port.
1765  *
1766  *      This driver is structured to determine EOC occurrences by
1767  *      reading the CSTAT member of the list structure.  Rx EOC
1768  *      interrupts are disabled via the DIO INTDIS register.
1769  *      However, TLAN chips before revision 3.0 didn't have this
1770  *      CSTAT member or a INTDIS register, so if this chip is
1771  *      pre-3.0, process EOC interrupts normally.
1772  *
1773  **************************************************************/
1774
1775 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1776 {
1777         struct tlan_priv        *priv = netdev_priv(dev);
1778         dma_addr_t      head_list_phys;
1779         u32             ack = 1;
1780
1781         if (priv->tlan_rev < 0x30) {
1782                 TLAN_DBG(TLAN_DEBUG_RX,
1783                          "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1784                          priv->rx_head, priv->rx_tail);
1785                 head_list_phys = priv->rx_list_dma
1786                         + sizeof(struct tlan_list)*priv->rx_head;
1787                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1788                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1789                 priv->rx_eoc_count++;
1790         }
1791
1792         return ack;
1793
1794 }
1795
1796
1797
1798
1799 /*****************************************************************************
1800 ******************************************************************************
1801
1802 ThunderLAN driver timer function
1803
1804 ******************************************************************************
1805 *****************************************************************************/
1806
1807
1808 /***************************************************************
1809  *      tlan_timer
1810  *
1811  *      Returns:
1812  *              Nothing
1813  *      Parms:
1814  *              data    A value given to add timer when
1815  *                      add_timer was called.
1816  *
1817  *      This function handles timed functionality for the
1818  *      TLAN driver.  The two current timer uses are for
1819  *      delaying for autonegotionation and driving the ACT LED.
1820  *      -       Autonegotiation requires being allowed about
1821  *              2 1/2 seconds before attempting to transmit a
1822  *              packet.  It would be a very bad thing to hang
1823  *              the kernel this long, so the driver doesn't
1824  *              allow transmission 'til after this time, for
1825  *              certain PHYs.  It would be much nicer if all
1826  *              PHYs were interrupt-capable like the internal
1827  *              PHY.
1828  *      -       The ACT LED, which shows adapter activity, is
1829  *              driven by the driver, and so must be left on
1830  *              for a short period to power up the LED so it
1831  *              can be seen.  This delay can be changed by
1832  *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1833  *              if desired.  100 ms  produces a slightly
1834  *              sluggish response.
1835  *
1836  **************************************************************/
1837
1838 static void tlan_timer(struct timer_list *t)
1839 {
1840         struct tlan_priv        *priv = from_timer(priv, t, timer);
1841         struct net_device       *dev = priv->dev;
1842         u32             elapsed;
1843         unsigned long   flags = 0;
1844
1845         priv->timer.function = NULL;
1846
1847         switch (priv->timer_type) {
1848         case TLAN_TIMER_PHY_PDOWN:
1849                 tlan_phy_power_down(dev);
1850                 break;
1851         case TLAN_TIMER_PHY_PUP:
1852                 tlan_phy_power_up(dev);
1853                 break;
1854         case TLAN_TIMER_PHY_RESET:
1855                 tlan_phy_reset(dev);
1856                 break;
1857         case TLAN_TIMER_PHY_START_LINK:
1858                 tlan_phy_start_link(dev);
1859                 break;
1860         case TLAN_TIMER_PHY_FINISH_AN:
1861                 tlan_phy_finish_auto_neg(dev);
1862                 break;
1863         case TLAN_TIMER_FINISH_RESET:
1864                 tlan_finish_reset(dev);
1865                 break;
1866         case TLAN_TIMER_ACTIVITY:
1867                 spin_lock_irqsave(&priv->lock, flags);
1868                 if (priv->timer.function == NULL) {
1869                         elapsed = jiffies - priv->timer_set_at;
1870                         if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1871                                 tlan_dio_write8(dev->base_addr,
1872                                                 TLAN_LED_REG, TLAN_LED_LINK);
1873                         } else  {
1874                                 priv->timer.expires = priv->timer_set_at
1875                                         + TLAN_TIMER_ACT_DELAY;
1876                                 spin_unlock_irqrestore(&priv->lock, flags);
1877                                 add_timer(&priv->timer);
1878                                 break;
1879                         }
1880                 }
1881                 spin_unlock_irqrestore(&priv->lock, flags);
1882                 break;
1883         default:
1884                 break;
1885         }
1886
1887 }
1888
1889
1890 /*****************************************************************************
1891 ******************************************************************************
1892
1893 ThunderLAN driver adapter related routines
1894
1895 ******************************************************************************
1896 *****************************************************************************/
1897
1898
1899 /***************************************************************
1900  *      tlan_reset_lists
1901  *
1902  *      Returns:
1903  *              Nothing
1904  *      Parms:
1905  *              dev     The device structure with the list
1906  *                      structures to be reset.
1907  *
1908  *      This routine sets the variables associated with managing
1909  *      the TLAN lists to their initial values.
1910  *
1911  **************************************************************/
1912
1913 static void tlan_reset_lists(struct net_device *dev)
1914 {
1915         struct tlan_priv *priv = netdev_priv(dev);
1916         int             i;
1917         struct tlan_list        *list;
1918         dma_addr_t      list_phys;
1919         struct sk_buff  *skb;
1920
1921         priv->tx_head = 0;
1922         priv->tx_tail = 0;
1923         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1924                 list = priv->tx_list + i;
1925                 list->c_stat = TLAN_CSTAT_UNUSED;
1926                 list->buffer[0].address = 0;
1927                 list->buffer[2].count = 0;
1928                 list->buffer[2].address = 0;
1929                 list->buffer[8].address = 0;
1930                 list->buffer[9].address = 0;
1931         }
1932
1933         priv->rx_head = 0;
1934         priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1935         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1936                 list = priv->rx_list + i;
1937                 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1938                 list->c_stat = TLAN_CSTAT_READY;
1939                 list->frame_size = TLAN_MAX_FRAME_SIZE;
1940                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1941                 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1942                 if (!skb)
1943                         break;
1944
1945                 list->buffer[0].address = pci_map_single(priv->pci_dev,
1946                                                          skb->data,
1947                                                          TLAN_MAX_FRAME_SIZE,
1948                                                          PCI_DMA_FROMDEVICE);
1949                 tlan_store_skb(list, skb);
1950                 list->buffer[1].count = 0;
1951                 list->buffer[1].address = 0;
1952                 list->forward = list_phys + sizeof(struct tlan_list);
1953         }
1954
1955         /* in case ran out of memory early, clear bits */
1956         while (i < TLAN_NUM_RX_LISTS) {
1957                 tlan_store_skb(priv->rx_list + i, NULL);
1958                 ++i;
1959         }
1960         list->forward = 0;
1961
1962 }
1963
1964
1965 static void tlan_free_lists(struct net_device *dev)
1966 {
1967         struct tlan_priv *priv = netdev_priv(dev);
1968         int             i;
1969         struct tlan_list        *list;
1970         struct sk_buff  *skb;
1971
1972         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1973                 list = priv->tx_list + i;
1974                 skb = tlan_get_skb(list);
1975                 if (skb) {
1976                         pci_unmap_single(
1977                                 priv->pci_dev,
1978                                 list->buffer[0].address,
1979                                 max(skb->len,
1980                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
1981                                 PCI_DMA_TODEVICE);
1982                         dev_kfree_skb_any(skb);
1983                         list->buffer[8].address = 0;
1984                         list->buffer[9].address = 0;
1985                 }
1986         }
1987
1988         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1989                 list = priv->rx_list + i;
1990                 skb = tlan_get_skb(list);
1991                 if (skb) {
1992                         pci_unmap_single(priv->pci_dev,
1993                                          list->buffer[0].address,
1994                                          TLAN_MAX_FRAME_SIZE,
1995                                          PCI_DMA_FROMDEVICE);
1996                         dev_kfree_skb_any(skb);
1997                         list->buffer[8].address = 0;
1998                         list->buffer[9].address = 0;
1999                 }
2000         }
2001 }
2002
2003
2004
2005
2006 /***************************************************************
2007  *      tlan_print_dio
2008  *
2009  *      Returns:
2010  *              Nothing
2011  *      Parms:
2012  *              io_base         Base IO port of the device of
2013  *                              which to print DIO registers.
2014  *
2015  *      This function prints out all the internal (DIO)
2016  *      registers of a TLAN chip.
2017  *
2018  **************************************************************/
2019
2020 static void tlan_print_dio(u16 io_base)
2021 {
2022         u32 data0, data1;
2023         int     i;
2024
2025         pr_info("Contents of internal registers for io base 0x%04hx\n",
2026                 io_base);
2027         pr_info("Off.  +0        +4\n");
2028         for (i = 0; i < 0x4C; i += 8) {
2029                 data0 = tlan_dio_read32(io_base, i);
2030                 data1 = tlan_dio_read32(io_base, i + 0x4);
2031                 pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2032         }
2033
2034 }
2035
2036
2037
2038
2039 /***************************************************************
2040  *      TLan_PrintList
2041  *
2042  *      Returns:
2043  *              Nothing
2044  *      Parms:
2045  *              list    A pointer to the struct tlan_list structure to
2046  *                      be printed.
2047  *              type    A string to designate type of list,
2048  *                      "Rx" or "Tx".
2049  *              num     The index of the list.
2050  *
2051  *      This function prints out the contents of the list
2052  *      pointed to by the list parameter.
2053  *
2054  **************************************************************/
2055
2056 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2057 {
2058         int i;
2059
2060         pr_info("%s List %d at %p\n", type, num, list);
2061         pr_info("   Forward    = 0x%08x\n",  list->forward);
2062         pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2063         pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2064         /* for (i = 0; i < 10; i++) { */
2065         for (i = 0; i < 2; i++) {
2066                 pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2067                         i, list->buffer[i].count, list->buffer[i].address);
2068         }
2069
2070 }
2071
2072
2073
2074
2075 /***************************************************************
2076  *      tlan_read_and_clear_stats
2077  *
2078  *      Returns:
2079  *              Nothing
2080  *      Parms:
2081  *              dev     Pointer to device structure of adapter
2082  *                      to which to read stats.
2083  *              record  Flag indicating whether to add
2084  *
2085  *      This functions reads all the internal status registers
2086  *      of the TLAN chip, which clears them as a side effect.
2087  *      It then either adds the values to the device's status
2088  *      struct, or discards them, depending on whether record
2089  *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2090  *
2091  **************************************************************/
2092
2093 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2094 {
2095         u32             tx_good, tx_under;
2096         u32             rx_good, rx_over;
2097         u32             def_tx, crc, code;
2098         u32             multi_col, single_col;
2099         u32             excess_col, late_col, loss;
2100
2101         outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2102         tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2103         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2104         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2105         tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2106
2107         outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2108         rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2109         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2110         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2111         rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2112
2113         outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2114         def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2115         def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2116         crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2117         code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2118
2119         outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2120         multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2121         multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2122         single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2123         single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2124
2125         outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2126         excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2127         late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2128         loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2129
2130         if (record) {
2131                 dev->stats.rx_packets += rx_good;
2132                 dev->stats.rx_errors  += rx_over + crc + code;
2133                 dev->stats.tx_packets += tx_good;
2134                 dev->stats.tx_errors  += tx_under + loss;
2135                 dev->stats.collisions += multi_col
2136                         + single_col + excess_col + late_col;
2137
2138                 dev->stats.rx_over_errors    += rx_over;
2139                 dev->stats.rx_crc_errors     += crc;
2140                 dev->stats.rx_frame_errors   += code;
2141
2142                 dev->stats.tx_aborted_errors += tx_under;
2143                 dev->stats.tx_carrier_errors += loss;
2144         }
2145
2146 }
2147
2148
2149
2150
2151 /***************************************************************
2152  *      TLan_Reset
2153  *
2154  *      Returns:
2155  *              0
2156  *      Parms:
2157  *              dev     Pointer to device structure of adapter
2158  *                      to be reset.
2159  *
2160  *      This function resets the adapter and it's physical
2161  *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2162  *      Programmer's Guide" for details.  The routine tries to
2163  *      implement what is detailed there, though adjustments
2164  *      have been made.
2165  *
2166  **************************************************************/
2167
2168 static void
2169 tlan_reset_adapter(struct net_device *dev)
2170 {
2171         struct tlan_priv        *priv = netdev_priv(dev);
2172         int             i;
2173         u32             addr;
2174         u32             data;
2175         u8              data8;
2176
2177         priv->tlan_full_duplex = false;
2178         priv->phy_online = 0;
2179         netif_carrier_off(dev);
2180
2181 /*  1.  Assert reset bit. */
2182
2183         data = inl(dev->base_addr + TLAN_HOST_CMD);
2184         data |= TLAN_HC_AD_RST;
2185         outl(data, dev->base_addr + TLAN_HOST_CMD);
2186
2187         udelay(1000);
2188
2189 /*  2.  Turn off interrupts. (Probably isn't necessary) */
2190
2191         data = inl(dev->base_addr + TLAN_HOST_CMD);
2192         data |= TLAN_HC_INT_OFF;
2193         outl(data, dev->base_addr + TLAN_HOST_CMD);
2194
2195 /*  3.  Clear AREGs and HASHs. */
2196
2197         for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2198                 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2199
2200 /*  4.  Setup NetConfig register. */
2201
2202         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2203         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2204
2205 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2206
2207         outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2208         outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2209
2210 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2211
2212         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2213         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2214         tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2215
2216 /*  7.  Setup the remaining registers. */
2217
2218         if (priv->tlan_rev >= 0x30) {
2219                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2220                 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2221         }
2222         tlan_phy_detect(dev);
2223         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2224
2225         if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2226                 data |= TLAN_NET_CFG_BIT;
2227                 if (priv->aui == 1) {
2228                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2229                 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2230                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2231                         priv->tlan_full_duplex = true;
2232                 } else {
2233                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2234                 }
2235         }
2236
2237         /* don't power down internal PHY if we're going to use it */
2238         if (priv->phy_num == 0 ||
2239            (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2240                 data |= TLAN_NET_CFG_PHY_EN;
2241         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2242
2243         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2244                 tlan_finish_reset(dev);
2245         else
2246                 tlan_phy_power_down(dev);
2247
2248 }
2249
2250
2251
2252
2253 static void
2254 tlan_finish_reset(struct net_device *dev)
2255 {
2256         struct tlan_priv        *priv = netdev_priv(dev);
2257         u8              data;
2258         u32             phy;
2259         u8              sio;
2260         u16             status;
2261         u16             partner;
2262         u16             tlphy_ctl;
2263         u16             tlphy_par;
2264         u16             tlphy_id1, tlphy_id2;
2265         int             i;
2266
2267         phy = priv->phy[priv->phy_num];
2268
2269         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2270         if (priv->tlan_full_duplex)
2271                 data |= TLAN_NET_CMD_DUPLEX;
2272         tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2273         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2274         if (priv->phy_num == 0)
2275                 data |= TLAN_NET_MASK_MASK7;
2276         tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2277         tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2278         tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2279         tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2280
2281         if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2282             (priv->aui)) {
2283                 status = MII_GS_LINK;
2284                 netdev_info(dev, "Link forced\n");
2285         } else {
2286                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2287                 udelay(1000);
2288                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2289                 if (status & MII_GS_LINK) {
2290                         /* We only support link info on Nat.Sem. PHY's */
2291                         if ((tlphy_id1 == NAT_SEM_ID1) &&
2292                             (tlphy_id2 == NAT_SEM_ID2)) {
2293                                 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2294                                         &partner);
2295                                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2296                                         &tlphy_par);
2297
2298                                 netdev_info(dev,
2299                                         "Link active, %s %uMbps %s-Duplex\n",
2300                                         !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2301                                         ? "forced" : "Autonegotiation enabled,",
2302                                         tlphy_par & TLAN_PHY_SPEED_100
2303                                         ? 100 : 10,
2304                                         tlphy_par & TLAN_PHY_DUPLEX_FULL
2305                                         ? "Full" : "Half");
2306
2307                                 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2308                                         netdev_info(dev, "Partner capability:");
2309                                         for (i = 5; i < 10; i++)
2310                                                 if (partner & (1 << i))
2311                                                         pr_cont(" %s",
2312                                                                 media[i-5]);
2313                                         pr_cont("\n");
2314                                 }
2315                         } else
2316                                 netdev_info(dev, "Link active\n");
2317                         /* Enabling link beat monitoring */
2318                         priv->media_timer.expires = jiffies + HZ;
2319                         add_timer(&priv->media_timer);
2320                 }
2321         }
2322
2323         if (priv->phy_num == 0) {
2324                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2325                 tlphy_ctl |= TLAN_TC_INTEN;
2326                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2327                 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2328                 sio |= TLAN_NET_SIO_MINTEN;
2329                 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2330         }
2331
2332         if (status & MII_GS_LINK) {
2333                 tlan_set_mac(dev, 0, dev->dev_addr);
2334                 priv->phy_online = 1;
2335                 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2336                 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2337                         outb((TLAN_HC_REQ_INT >> 8),
2338                              dev->base_addr + TLAN_HOST_CMD + 1);
2339                 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2340                 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2341                 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2342                 netif_carrier_on(dev);
2343         } else {
2344                 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2345                 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2346                 return;
2347         }
2348         tlan_set_multicast_list(dev);
2349
2350 }
2351
2352
2353
2354
2355 /***************************************************************
2356  *      tlan_set_mac
2357  *
2358  *      Returns:
2359  *              Nothing
2360  *      Parms:
2361  *              dev     Pointer to device structure of adapter
2362  *                      on which to change the AREG.
2363  *              areg    The AREG to set the address in (0 - 3).
2364  *              mac     A pointer to an array of chars.  Each
2365  *                      element stores one byte of the address.
2366  *                      IE, it isn't in ascii.
2367  *
2368  *      This function transfers a MAC address to one of the
2369  *      TLAN AREGs (address registers).  The TLAN chip locks
2370  *      the register on writing to offset 0 and unlocks the
2371  *      register after writing to offset 5.  If NULL is passed
2372  *      in mac, then the AREG is filled with 0's.
2373  *
2374  **************************************************************/
2375
2376 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2377 {
2378         int i;
2379
2380         areg *= 6;
2381
2382         if (mac != NULL) {
2383                 for (i = 0; i < 6; i++)
2384                         tlan_dio_write8(dev->base_addr,
2385                                         TLAN_AREG_0 + areg + i, mac[i]);
2386         } else {
2387                 for (i = 0; i < 6; i++)
2388                         tlan_dio_write8(dev->base_addr,
2389                                         TLAN_AREG_0 + areg + i, 0);
2390         }
2391
2392 }
2393
2394
2395
2396
2397 /*****************************************************************************
2398 ******************************************************************************
2399
2400 ThunderLAN driver PHY layer routines
2401
2402 ******************************************************************************
2403 *****************************************************************************/
2404
2405
2406
2407 /*********************************************************************
2408  *      tlan_phy_print
2409  *
2410  *      Returns:
2411  *              Nothing
2412  *      Parms:
2413  *              dev     A pointer to the device structure of the
2414  *                      TLAN device having the PHYs to be detailed.
2415  *
2416  *      This function prints the registers a PHY (aka transceiver).
2417  *
2418  ********************************************************************/
2419
2420 static void tlan_phy_print(struct net_device *dev)
2421 {
2422         struct tlan_priv *priv = netdev_priv(dev);
2423         u16 i, data0, data1, data2, data3, phy;
2424
2425         phy = priv->phy[priv->phy_num];
2426
2427         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2428                 netdev_info(dev, "Unmanaged PHY\n");
2429         } else if (phy <= TLAN_PHY_MAX_ADDR) {
2430                 netdev_info(dev, "PHY 0x%02x\n", phy);
2431                 pr_info("   Off.  +0     +1     +2     +3\n");
2432                 for (i = 0; i < 0x20; i += 4) {
2433                         tlan_mii_read_reg(dev, phy, i, &data0);
2434                         tlan_mii_read_reg(dev, phy, i + 1, &data1);
2435                         tlan_mii_read_reg(dev, phy, i + 2, &data2);
2436                         tlan_mii_read_reg(dev, phy, i + 3, &data3);
2437                         pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2438                                 i, data0, data1, data2, data3);
2439                 }
2440         } else {
2441                 netdev_info(dev, "Invalid PHY\n");
2442         }
2443
2444 }
2445
2446
2447
2448
2449 /*********************************************************************
2450  *      tlan_phy_detect
2451  *
2452  *      Returns:
2453  *              Nothing
2454  *      Parms:
2455  *              dev     A pointer to the device structure of the adapter
2456  *                      for which the PHY needs determined.
2457  *
2458  *      So far I've found that adapters which have external PHYs
2459  *      may also use the internal PHY for part of the functionality.
2460  *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2461  *      chip has an internal PHY, and then finds the first external
2462  *      PHY (starting from address 0) if it exists).
2463  *
2464  ********************************************************************/
2465
2466 static void tlan_phy_detect(struct net_device *dev)
2467 {
2468         struct tlan_priv *priv = netdev_priv(dev);
2469         u16             control;
2470         u16             hi;
2471         u16             lo;
2472         u32             phy;
2473
2474         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2475                 priv->phy_num = 0xffff;
2476                 return;
2477         }
2478
2479         tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2480
2481         if (hi != 0xffff)
2482                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2483         else
2484                 priv->phy[0] = TLAN_PHY_NONE;
2485
2486         priv->phy[1] = TLAN_PHY_NONE;
2487         for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2488                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2489                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2490                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2491                 if ((control != 0xffff) ||
2492                     (hi != 0xffff) || (lo != 0xffff)) {
2493                         TLAN_DBG(TLAN_DEBUG_GNRL,
2494                                  "PHY found at %02x %04x %04x %04x\n",
2495                                  phy, control, hi, lo);
2496                         if ((priv->phy[1] == TLAN_PHY_NONE) &&
2497                             (phy != TLAN_PHY_MAX_ADDR)) {
2498                                 priv->phy[1] = phy;
2499                         }
2500                 }
2501         }
2502
2503         if (priv->phy[1] != TLAN_PHY_NONE)
2504                 priv->phy_num = 1;
2505         else if (priv->phy[0] != TLAN_PHY_NONE)
2506                 priv->phy_num = 0;
2507         else
2508                 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2509
2510 }
2511
2512
2513
2514
2515 static void tlan_phy_power_down(struct net_device *dev)
2516 {
2517         struct tlan_priv        *priv = netdev_priv(dev);
2518         u16             value;
2519
2520         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2521         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2522         tlan_mii_sync(dev->base_addr);
2523         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2524         if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2525                 /* if using internal PHY, the external PHY must be powered on */
2526                 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2527                         value = MII_GC_ISOLATE; /* just isolate it from MII */
2528                 tlan_mii_sync(dev->base_addr);
2529                 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2530         }
2531
2532         /* Wait for 50 ms and powerup
2533          * This is abitrary.  It is intended to make sure the
2534          * transceiver settles.
2535          */
2536         tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2537
2538 }
2539
2540
2541
2542
2543 static void tlan_phy_power_up(struct net_device *dev)
2544 {
2545         struct tlan_priv        *priv = netdev_priv(dev);
2546         u16             value;
2547
2548         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2549         tlan_mii_sync(dev->base_addr);
2550         value = MII_GC_LOOPBK;
2551         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2552         tlan_mii_sync(dev->base_addr);
2553         /* Wait for 500 ms and reset the
2554          * transceiver.  The TLAN docs say both 50 ms and
2555          * 500 ms, so do the longer, just in case.
2556          */
2557         tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2558
2559 }
2560
2561
2562
2563
2564 static void tlan_phy_reset(struct net_device *dev)
2565 {
2566         struct tlan_priv        *priv = netdev_priv(dev);
2567         u16             phy;
2568         u16             value;
2569         unsigned long timeout = jiffies + HZ;
2570
2571         phy = priv->phy[priv->phy_num];
2572
2573         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2574         tlan_mii_sync(dev->base_addr);
2575         value = MII_GC_LOOPBK | MII_GC_RESET;
2576         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2577         do {
2578                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2579                 if (time_after(jiffies, timeout)) {
2580                         netdev_err(dev, "PHY reset timeout\n");
2581                         return;
2582                 }
2583         } while (value & MII_GC_RESET);
2584
2585         /* Wait for 500 ms and initialize.
2586          * I don't remember why I wait this long.
2587          * I've changed this to 50ms, as it seems long enough.
2588          */
2589         tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2590
2591 }
2592
2593
2594
2595
2596 static void tlan_phy_start_link(struct net_device *dev)
2597 {
2598         struct tlan_priv        *priv = netdev_priv(dev);
2599         u16             ability;
2600         u16             control;
2601         u16             data;
2602         u16             phy;
2603         u16             status;
2604         u16             tctl;
2605
2606         phy = priv->phy[priv->phy_num];
2607         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2608         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2609         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2610
2611         if ((status & MII_GS_AUTONEG) &&
2612             (!priv->aui)) {
2613                 ability = status >> 11;
2614                 if (priv->speed  == TLAN_SPEED_10 &&
2615                     priv->duplex == TLAN_DUPLEX_HALF) {
2616                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2617                 } else if (priv->speed == TLAN_SPEED_10 &&
2618                            priv->duplex == TLAN_DUPLEX_FULL) {
2619                         priv->tlan_full_duplex = true;
2620                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2621                 } else if (priv->speed == TLAN_SPEED_100 &&
2622                            priv->duplex == TLAN_DUPLEX_HALF) {
2623                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2624                 } else if (priv->speed == TLAN_SPEED_100 &&
2625                            priv->duplex == TLAN_DUPLEX_FULL) {
2626                         priv->tlan_full_duplex = true;
2627                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2628                 } else {
2629
2630                         /* Set Auto-Neg advertisement */
2631                         tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2632                                            (ability << 5) | 1);
2633                         /* Enablee Auto-Neg */
2634                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2635                         /* Restart Auto-Neg */
2636                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2637                         /* Wait for 4 sec for autonegotiation
2638                          * to complete.  The max spec time is less than this
2639                          * but the card need additional time to start AN.
2640                          * .5 sec should be plenty extra.
2641                          */
2642                         netdev_info(dev, "Starting autonegotiation\n");
2643                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2644                         return;
2645                 }
2646
2647         }
2648
2649         if ((priv->aui) && (priv->phy_num != 0)) {
2650                 priv->phy_num = 0;
2651                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2652                         | TLAN_NET_CFG_PHY_EN;
2653                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2654                 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2655                 return;
2656         } else if (priv->phy_num == 0) {
2657                 control = 0;
2658                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2659                 if (priv->aui) {
2660                         tctl |= TLAN_TC_AUISEL;
2661                 } else {
2662                         tctl &= ~TLAN_TC_AUISEL;
2663                         if (priv->duplex == TLAN_DUPLEX_FULL) {
2664                                 control |= MII_GC_DUPLEX;
2665                                 priv->tlan_full_duplex = true;
2666                         }
2667                         if (priv->speed == TLAN_SPEED_100)
2668                                 control |= MII_GC_SPEEDSEL;
2669                 }
2670                 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2671                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2672         }
2673
2674         /* Wait for 2 sec to give the transceiver time
2675          * to establish link.
2676          */
2677         tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2678
2679 }
2680
2681
2682
2683
2684 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2685 {
2686         struct tlan_priv        *priv = netdev_priv(dev);
2687         u16             an_adv;
2688         u16             an_lpa;
2689         u16             mode;
2690         u16             phy;
2691         u16             status;
2692
2693         phy = priv->phy[priv->phy_num];
2694
2695         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2696         udelay(1000);
2697         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2698
2699         if (!(status & MII_GS_AUTOCMPLT)) {
2700                 /* Wait for 8 sec to give the process
2701                  * more time.  Perhaps we should fail after a while.
2702                  */
2703                 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2704                 return;
2705         }
2706
2707         netdev_info(dev, "Autonegotiation complete\n");
2708         tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2709         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2710         mode = an_adv & an_lpa & 0x03E0;
2711         if (mode & 0x0100)
2712                 priv->tlan_full_duplex = true;
2713         else if (!(mode & 0x0080) && (mode & 0x0040))
2714                 priv->tlan_full_duplex = true;
2715
2716         /* switch to internal PHY for 10 Mbps */
2717         if ((!(mode & 0x0180)) &&
2718             (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2719             (priv->phy_num != 0)) {
2720                 priv->phy_num = 0;
2721                 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2722                 return;
2723         }
2724
2725         if (priv->phy_num == 0) {
2726                 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2727                     (an_adv & an_lpa & 0x0040)) {
2728                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2729                                            MII_GC_AUTOENB | MII_GC_DUPLEX);
2730                         netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2731                 } else {
2732                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2733                                            MII_GC_AUTOENB);
2734                         netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2735                 }
2736         }
2737
2738         /* Wait for 100 ms.  No reason in partiticular.
2739          */
2740         tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2741
2742 }
2743
2744
2745 /*********************************************************************
2746  *
2747  *     tlan_phy_monitor
2748  *
2749  *     Returns:
2750  *            None
2751  *
2752  *     Params:
2753  *            data           The device structure of this device.
2754  *
2755  *
2756  *     This function monitors PHY condition by reading the status
2757  *     register via the MII bus, controls LINK LED and notifies the
2758  *     kernel about link state.
2759  *
2760  *******************************************************************/
2761
2762 static void tlan_phy_monitor(struct timer_list *t)
2763 {
2764         struct tlan_priv *priv = from_timer(priv, t, media_timer);
2765         struct net_device *dev = priv->dev;
2766         u16     phy;
2767         u16     phy_status;
2768
2769         phy = priv->phy[priv->phy_num];
2770
2771         /* Get PHY status register */
2772         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2773
2774         /* Check if link has been lost */
2775         if (!(phy_status & MII_GS_LINK)) {
2776                 if (netif_carrier_ok(dev)) {
2777                         printk(KERN_DEBUG "TLAN: %s has lost link\n",
2778                                dev->name);
2779                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2780                         netif_carrier_off(dev);
2781                         if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2782                                 /* power down internal PHY */
2783                                 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2784                                            MII_GC_ISOLATE;
2785
2786                                 tlan_mii_sync(dev->base_addr);
2787                                 tlan_mii_write_reg(dev, priv->phy[0],
2788                                                    MII_GEN_CTL, data);
2789                                 /* set to external PHY */
2790                                 priv->phy_num = 1;
2791                                 /* restart autonegotiation */
2792                                 tlan_set_timer(dev, msecs_to_jiffies(400),
2793                                                TLAN_TIMER_PHY_PDOWN);
2794                                 return;
2795                         }
2796                 }
2797         }
2798
2799         /* Link restablished? */
2800         if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2801                 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2802                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2803                        dev->name);
2804                 netif_carrier_on(dev);
2805         }
2806         priv->media_timer.expires = jiffies + HZ;
2807         add_timer(&priv->media_timer);
2808 }
2809
2810
2811 /*****************************************************************************
2812 ******************************************************************************
2813
2814 ThunderLAN driver MII routines
2815
2816 these routines are based on the information in chap. 2 of the
2817 "ThunderLAN Programmer's Guide", pp. 15-24.
2818
2819 ******************************************************************************
2820 *****************************************************************************/
2821
2822
2823 /***************************************************************
2824  *      tlan_mii_read_reg
2825  *
2826  *      Returns:
2827  *              false   if ack received ok
2828  *              true    if no ack received or other error
2829  *
2830  *      Parms:
2831  *              dev             The device structure containing
2832  *                              The io address and interrupt count
2833  *                              for this device.
2834  *              phy             The address of the PHY to be queried.
2835  *              reg             The register whose contents are to be
2836  *                              retrieved.
2837  *              val             A pointer to a variable to store the
2838  *                              retrieved value.
2839  *
2840  *      This function uses the TLAN's MII bus to retrieve the contents
2841  *      of a given register on a PHY.  It sends the appropriate info
2842  *      and then reads the 16-bit register value from the MII bus via
2843  *      the TLAN SIO register.
2844  *
2845  **************************************************************/
2846
2847 static bool
2848 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2849 {
2850         u8      nack;
2851         u16     sio, tmp;
2852         u32     i;
2853         bool    err;
2854         int     minten;
2855         struct tlan_priv *priv = netdev_priv(dev);
2856         unsigned long flags = 0;
2857
2858         err = false;
2859         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2860         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2861
2862         if (!in_irq())
2863                 spin_lock_irqsave(&priv->lock, flags);
2864
2865         tlan_mii_sync(dev->base_addr);
2866
2867         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2868         if (minten)
2869                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2870
2871         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
2872         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* read  (10b) */
2873         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
2874         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
2875
2876
2877         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);        /* change direction */
2878
2879         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* clock idle bit */
2880         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2881         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* wait 300ns */
2882
2883         nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);   /* check for ACK */
2884         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);           /* finish ACK */
2885         if (nack) {                                     /* no ACK, so fake it */
2886                 for (i = 0; i < 16; i++) {
2887                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2888                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2889                 }
2890                 tmp = 0xffff;
2891                 err = true;
2892         } else {                                        /* ACK, so read data */
2893                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2894                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2895                         if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2896                                 tmp |= i;
2897                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2898                 }
2899         }
2900
2901
2902         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* idle cycle */
2903         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2904
2905         if (minten)
2906                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2907
2908         *val = tmp;
2909
2910         if (!in_irq())
2911                 spin_unlock_irqrestore(&priv->lock, flags);
2912
2913         return err;
2914
2915 }
2916
2917
2918
2919
2920 /***************************************************************
2921  *      tlan_mii_send_data
2922  *
2923  *      Returns:
2924  *              Nothing
2925  *      Parms:
2926  *              base_port       The base IO port of the adapter in
2927  *                              question.
2928  *              dev             The address of the PHY to be queried.
2929  *              data            The value to be placed on the MII bus.
2930  *              num_bits        The number of bits in data that are to
2931  *                              be placed on the MII bus.
2932  *
2933  *      This function sends on sequence of bits on the MII
2934  *      configuration bus.
2935  *
2936  **************************************************************/
2937
2938 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2939 {
2940         u16 sio;
2941         u32 i;
2942
2943         if (num_bits == 0)
2944                 return;
2945
2946         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2947         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2948         tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2949
2950         for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2951                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2952                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2953                 if (data & i)
2954                         tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2955                 else
2956                         tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2957                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2958                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2959         }
2960
2961 }
2962
2963
2964
2965
2966 /***************************************************************
2967  *      TLan_MiiSync
2968  *
2969  *      Returns:
2970  *              Nothing
2971  *      Parms:
2972  *              base_port       The base IO port of the adapter in
2973  *                              question.
2974  *
2975  *      This functions syncs all PHYs in terms of the MII configuration
2976  *      bus.
2977  *
2978  **************************************************************/
2979
2980 static void tlan_mii_sync(u16 base_port)
2981 {
2982         int i;
2983         u16 sio;
2984
2985         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2986         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2987
2988         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2989         for (i = 0; i < 32; i++) {
2990                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2991                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2992         }
2993
2994 }
2995
2996
2997
2998
2999 /***************************************************************
3000  *      tlan_mii_write_reg
3001  *
3002  *      Returns:
3003  *              Nothing
3004  *      Parms:
3005  *              dev             The device structure for the device
3006  *                              to write to.
3007  *              phy             The address of the PHY to be written to.
3008  *              reg             The register whose contents are to be
3009  *                              written.
3010  *              val             The value to be written to the register.
3011  *
3012  *      This function uses the TLAN's MII bus to write the contents of a
3013  *      given register on a PHY.  It sends the appropriate info and then
3014  *      writes the 16-bit register value from the MII configuration bus
3015  *      via the TLAN SIO register.
3016  *
3017  **************************************************************/
3018
3019 static void
3020 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3021 {
3022         u16     sio;
3023         int     minten;
3024         unsigned long flags = 0;
3025         struct tlan_priv *priv = netdev_priv(dev);
3026
3027         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3028         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3029
3030         if (!in_irq())
3031                 spin_lock_irqsave(&priv->lock, flags);
3032
3033         tlan_mii_sync(dev->base_addr);
3034
3035         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3036         if (minten)
3037                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3038
3039         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
3040         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* write (01b) */
3041         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
3042         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
3043
3044         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* send ACK */
3045         tlan_mii_send_data(dev->base_addr, val, 16);    /* send data */
3046
3047         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3048         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3049
3050         if (minten)
3051                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3052
3053         if (!in_irq())
3054                 spin_unlock_irqrestore(&priv->lock, flags);
3055
3056 }
3057
3058
3059
3060
3061 /*****************************************************************************
3062 ******************************************************************************
3063
3064 ThunderLAN driver eeprom routines
3065
3066 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3067 EEPROM.  these functions are based on information in microchip's
3068 data sheet.  I don't know how well this functions will work with
3069 other Eeproms.
3070
3071 ******************************************************************************
3072 *****************************************************************************/
3073
3074
3075 /***************************************************************
3076  *      tlan_ee_send_start
3077  *
3078  *      Returns:
3079  *              Nothing
3080  *      Parms:
3081  *              io_base         The IO port base address for the
3082  *                              TLAN device with the EEPROM to
3083  *                              use.
3084  *
3085  *      This function sends a start cycle to an EEPROM attached
3086  *      to a TLAN chip.
3087  *
3088  **************************************************************/
3089
3090 static void tlan_ee_send_start(u16 io_base)
3091 {
3092         u16     sio;
3093
3094         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3095         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3096
3097         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3098         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3099         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3100         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3101         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3102
3103 }
3104
3105
3106
3107
3108 /***************************************************************
3109  *      tlan_ee_send_byte
3110  *
3111  *      Returns:
3112  *              If the correct ack was received, 0, otherwise 1
3113  *      Parms:  io_base         The IO port base address for the
3114  *                              TLAN device with the EEPROM to
3115  *                              use.
3116  *              data            The 8 bits of information to
3117  *                              send to the EEPROM.
3118  *              stop            If TLAN_EEPROM_STOP is passed, a
3119  *                              stop cycle is sent after the
3120  *                              byte is sent after the ack is
3121  *                              read.
3122  *
3123  *      This function sends a byte on the serial EEPROM line,
3124  *      driving the clock to send each bit. The function then
3125  *      reverses transmission direction and reads an acknowledge
3126  *      bit.
3127  *
3128  **************************************************************/
3129
3130 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3131 {
3132         int     err;
3133         u8      place;
3134         u16     sio;
3135
3136         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3137         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3138
3139         /* Assume clock is low, tx is enabled; */
3140         for (place = 0x80; place != 0; place >>= 1) {
3141                 if (place & data)
3142                         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3143                 else
3144                         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3145                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3146                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3147         }
3148         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3149         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3150         err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3151         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3152         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3153
3154         if ((!err) && stop) {
3155                 /* STOP, raise data while clock is high */
3156                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3157                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3158                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3159         }
3160
3161         return err;
3162
3163 }
3164
3165
3166
3167
3168 /***************************************************************
3169  *      tlan_ee_receive_byte
3170  *
3171  *      Returns:
3172  *              Nothing
3173  *      Parms:
3174  *              io_base         The IO port base address for the
3175  *                              TLAN device with the EEPROM to
3176  *                              use.
3177  *              data            An address to a char to hold the
3178  *                              data sent from the EEPROM.
3179  *              stop            If TLAN_EEPROM_STOP is passed, a
3180  *                              stop cycle is sent after the
3181  *                              byte is received, and no ack is
3182  *                              sent.
3183  *
3184  *      This function receives 8 bits of data from the EEPROM
3185  *      over the serial link.  It then sends and ack bit, or no
3186  *      ack and a stop bit.  This function is used to retrieve
3187  *      data after the address of a byte in the EEPROM has been
3188  *      sent.
3189  *
3190  **************************************************************/
3191
3192 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3193 {
3194         u8  place;
3195         u16 sio;
3196
3197         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3198         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3199         *data = 0;
3200
3201         /* Assume clock is low, tx is enabled; */
3202         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3203         for (place = 0x80; place; place >>= 1) {
3204                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3205                 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3206                         *data |= place;
3207                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3208         }
3209
3210         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3211         if (!stop) {
3212                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3213                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3214                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3215         } else {
3216                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);  /* no ack = 1 (?) */
3217                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3218                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3219                 /* STOP, raise data while clock is high */
3220                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3221                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3222                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3223         }
3224
3225 }
3226
3227
3228
3229
3230 /***************************************************************
3231  *      tlan_ee_read_byte
3232  *
3233  *      Returns:
3234  *              No error = 0, else, the stage at which the error
3235  *              occurred.
3236  *      Parms:
3237  *              io_base         The IO port base address for the
3238  *                              TLAN device with the EEPROM to
3239  *                              use.
3240  *              ee_addr         The address of the byte in the
3241  *                              EEPROM whose contents are to be
3242  *                              retrieved.
3243  *              data            An address to a char to hold the
3244  *                              data obtained from the EEPROM.
3245  *
3246  *      This function reads a byte of information from an byte
3247  *      cell in the EEPROM.
3248  *
3249  **************************************************************/
3250
3251 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3252 {
3253         int err;
3254         struct tlan_priv *priv = netdev_priv(dev);
3255         unsigned long flags = 0;
3256         int ret = 0;
3257
3258         spin_lock_irqsave(&priv->lock, flags);
3259
3260         tlan_ee_send_start(dev->base_addr);
3261         err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3262         if (err) {
3263                 ret = 1;
3264                 goto fail;
3265         }
3266         err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3267         if (err) {
3268                 ret = 2;
3269                 goto fail;
3270         }
3271         tlan_ee_send_start(dev->base_addr);
3272         err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3273         if (err) {
3274                 ret = 3;
3275                 goto fail;
3276         }
3277         tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3278 fail:
3279         spin_unlock_irqrestore(&priv->lock, flags);
3280
3281         return ret;
3282
3283 }
3284
3285
3286