drivers/net/ethernet/ti/tlan.c

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