drivers/net/ethernet/ti/tlan.c

   1 /*******************************************************************************
   2  *
   3  *  Linux ThunderLAN Driver
   4  *
   5  *  tlan.c
   6  *  by James Banks
   7  *
   8  *  (C) 1997-1998 Caldera, Inc.
   9  *  (C) 1998 James Banks
  10  *  (C) 1999-2001 Torben Mathiasen
  11  *  (C) 2002 Samuel Chessman
  12  *
  13  *  This software may be used and distributed according to the terms
  14  *  of the GNU General Public License, incorporated herein by reference.
  15  *
  16  ** Useful (if not required) reading:
  17  *
  18  *              Texas Instruments, ThunderLAN Programmer's Guide,
  19  *                      TI Literature Number SPWU013A
  20  *                      available in PDF format from www.ti.com
  21  *              Level One, LXT901 and LXT970 Data Sheets
  22  *                      available in PDF format from www.level1.com
  23  *              National Semiconductor, DP83840A Data Sheet
  24  *                      available in PDF format from www.national.com
  25  *              Microchip Technology, 24C01A/02A/04A Data Sheet
  26  *                      available in PDF format from www.microchip.com
  27  *
  28  ******************************************************************************/
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/hardirq.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/ioport.h>
  37 #include <linux/eisa.h>
  38 #include <linux/pci.h>
  39 #include <linux/dma-mapping.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/delay.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/workqueue.h>
  45 #include <linux/mii.h>
  46
  47 #include "tlan.h"
  48
  49
  50 /* For removing EISA devices */
  51 static  struct net_device       *tlan_eisa_devices;
  52
  53 static  int             tlan_devices_installed;
  54
  55 /* Set speed, duplex and aui settings */
  56 static  int aui[MAX_TLAN_BOARDS];
  57 static  int duplex[MAX_TLAN_BOARDS];
  58 static  int speed[MAX_TLAN_BOARDS];
  59 static  int boards_found;
  60 module_param_array(aui, int, NULL, 0);
  61 module_param_array(duplex, int, NULL, 0);
  62 module_param_array(speed, int, NULL, 0);
  63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
  64 MODULE_PARM_DESC(duplex,
  65                  "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
  66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
  67
  68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
  69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
  70 MODULE_LICENSE("GPL");
  71
  72 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
  73 static  int             debug;
  74 module_param(debug, int, 0);
  75 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
  76
  77 static  const char tlan_signature[] = "TLAN";
  78 static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
  79 static  int tlan_have_pci;
  80 static  int tlan_have_eisa;
  81
  82 static const char * const media[] = {
  83         "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
  84         "100BaseTx-FD", "100BaseT4", NULL
  85 };
  86
  87 static struct board {
  88         const char      *device_label;
  89         u32             flags;
  90         u16             addr_ofs;
  91 } board_info[] = {
  92         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  93         { "Compaq Netelligent 10/100 TX PCI UTP",
  94           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  95         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  96         { "Compaq NetFlex-3/P",
  97           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
  98         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  99         { "Compaq Netelligent Integrated 10/100 TX UTP",
 100           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 101         { "Compaq Netelligent Dual 10/100 TX PCI UTP",
 102           TLAN_ADAPTER_NONE, 0x83 },
 103         { "Compaq Netelligent 10/100 TX Embedded UTP",
 104           TLAN_ADAPTER_NONE, 0x83 },
 105         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 106         { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
 107           TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
 108         { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
 109           TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
 110         { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 111         { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
 112         { "Compaq NetFlex-3/E",
 113           TLAN_ADAPTER_ACTIVITY_LED |   /* EISA card */
 114           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 115         { "Compaq NetFlex-3/E",
 116           TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
 117 };
 118
 119 static const struct pci_device_id tlan_pci_tbl[] = {
 120         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
 121           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 122         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
 123           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 124         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
 125           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
 126         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
 127           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
 128         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
 129           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 130         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
 131           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
 132         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
 133           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
 134         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
 135           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
 136         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
 137           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
 138         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
 139           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
 140         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
 141           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
 142         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
 143           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
 144         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
 145           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
 146         { 0,}
 147 };
 148 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
 149
 150 static void     tlan_eisa_probe(void);
 151 static void     tlan_eisa_cleanup(void);
 152 static int      tlan_init(struct net_device *);
 153 static int      tlan_open(struct net_device *dev);
 154 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
 155 static irqreturn_t tlan_handle_interrupt(int, void *);
 156 static int      tlan_close(struct net_device *);
 157 static struct   net_device_stats *tlan_get_stats(struct net_device *);
 158 static void     tlan_set_multicast_list(struct net_device *);
 159 static int      tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 160 static int      tlan_probe1(struct pci_dev *pdev, long ioaddr,
 161                             int irq, int rev, const struct pci_device_id *ent);
 162 static void     tlan_tx_timeout(struct net_device *dev);
 163 static void     tlan_tx_timeout_work(struct work_struct *work);
 164 static int      tlan_init_one(struct pci_dev *pdev,
 165                               const struct pci_device_id *ent);
 166
 167 static u32      tlan_handle_tx_eof(struct net_device *, u16);
 168 static u32      tlan_handle_stat_overflow(struct net_device *, u16);
 169 static u32      tlan_handle_rx_eof(struct net_device *, u16);
 170 static u32      tlan_handle_dummy(struct net_device *, u16);
 171 static u32      tlan_handle_tx_eoc(struct net_device *, u16);
 172 static u32      tlan_handle_status_check(struct net_device *, u16);
 173 static u32      tlan_handle_rx_eoc(struct net_device *, u16);
 174
 175 static void     tlan_timer(unsigned long);
 176
 177 static void     tlan_reset_lists(struct net_device *);
 178 static void     tlan_free_lists(struct net_device *);
 179 static void     tlan_print_dio(u16);
 180 static void     tlan_print_list(struct tlan_list *, char *, int);
 181 static void     tlan_read_and_clear_stats(struct net_device *, int);
 182 static void     tlan_reset_adapter(struct net_device *);
 183 static void     tlan_finish_reset(struct net_device *);
 184 static void     tlan_set_mac(struct net_device *, int areg, char *mac);
 185
 186 static void     tlan_phy_print(struct net_device *);
 187 static void     tlan_phy_detect(struct net_device *);
 188 static void     tlan_phy_power_down(struct net_device *);
 189 static void     tlan_phy_power_up(struct net_device *);
 190 static void     tlan_phy_reset(struct net_device *);
 191 static void     tlan_phy_start_link(struct net_device *);
 192 static void     tlan_phy_finish_auto_neg(struct net_device *);
 193 static void     tlan_phy_monitor(unsigned long);
 194
 195 /*
 196   static int    tlan_phy_nop(struct net_device *);
 197   static int    tlan_phy_internal_check(struct net_device *);
 198   static int    tlan_phy_internal_service(struct net_device *);
 199   static int    tlan_phy_dp83840a_check(struct net_device *);
 200 */
 201
 202 static bool     tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 203 static void     tlan_mii_send_data(u16, u32, unsigned);
 204 static void     tlan_mii_sync(u16);
 205 static void     tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 206
 207 static void     tlan_ee_send_start(u16);
 208 static int      tlan_ee_send_byte(u16, u8, int);
 209 static void     tlan_ee_receive_byte(u16, u8 *, int);
 210 static int      tlan_ee_read_byte(struct net_device *, u8, u8 *);
 211
 212
 213 static inline void
 214 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
 215 {
 216         unsigned long addr = (unsigned long)skb;
 217         tag->buffer[9].address = addr;
 218         tag->buffer[8].address = upper_32_bits(addr);
 219 }
 220
 221 static inline struct sk_buff *
 222 tlan_get_skb(const struct tlan_list *tag)
 223 {
 224         unsigned long addr;
 225
 226         addr = tag->buffer[9].address;
 227         addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
 228         return (struct sk_buff *) addr;
 229 }
 230
 231 static u32
 232 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
 233         NULL,
 234         tlan_handle_tx_eof,
 235         tlan_handle_stat_overflow,
 236         tlan_handle_rx_eof,
 237         tlan_handle_dummy,
 238         tlan_handle_tx_eoc,
 239         tlan_handle_status_check,
 240         tlan_handle_rx_eoc
 241 };
 242
 243 static inline void
 244 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
 245 {
 246         struct tlan_priv *priv = netdev_priv(dev);
 247         unsigned long flags = 0;
 248
 249         if (!in_irq())
 250                 spin_lock_irqsave(&priv->lock, flags);
 251         if (priv->timer.function != NULL &&
 252             priv->timer_type != TLAN_TIMER_ACTIVITY) {
 253                 if (!in_irq())
 254                         spin_unlock_irqrestore(&priv->lock, flags);
 255                 return;
 256         }
 257         priv->timer.function = tlan_timer;
 258         if (!in_irq())
 259                 spin_unlock_irqrestore(&priv->lock, flags);
 260
 261         priv->timer.data = (unsigned long) dev;
 262         priv->timer_set_at = jiffies;
 263         priv->timer_type = type;
 264         mod_timer(&priv->timer, jiffies + ticks);
 265
 266 }
 267
 268
 269 /*****************************************************************************
 270 ******************************************************************************
 271
 272 ThunderLAN driver primary functions
 273
 274 these functions are more or less common to all linux network drivers.
 275
 276 ******************************************************************************
 277 *****************************************************************************/
 278
 279
 280
 281
 282
 283 /***************************************************************
 284  *      tlan_remove_one
 285  *
 286  *      Returns:
 287  *              Nothing
 288  *      Parms:
 289  *              None
 290  *
 291  *      Goes through the TLanDevices list and frees the device
 292  *      structs and memory associated with each device (lists
 293  *      and buffers).  It also ureserves the IO port regions
 294  *      associated with this device.
 295  *
 296  **************************************************************/
 297
 298
 299 static void tlan_remove_one(struct pci_dev *pdev)
 300 {
 301         struct net_device *dev = pci_get_drvdata(pdev);
 302         struct tlan_priv        *priv = netdev_priv(dev);
 303
 304         unregister_netdev(dev);
 305
 306         if (priv->dma_storage) {
 307                 pci_free_consistent(priv->pci_dev,
 308                                     priv->dma_size, priv->dma_storage,
 309                                     priv->dma_storage_dma);
 310         }
 311
 312 #ifdef CONFIG_PCI
 313         pci_release_regions(pdev);
 314 #endif
 315
 316         free_netdev(dev);
 317
 318         cancel_work_sync(&priv->tlan_tqueue);
 319 }
 320
 321 static void tlan_start(struct net_device *dev)
 322 {
 323         tlan_reset_lists(dev);
 324         /* NOTE: It might not be necessary to read the stats before a
 325            reset if you don't care what the values are.
 326         */
 327         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 328         tlan_reset_adapter(dev);
 329         netif_wake_queue(dev);
 330 }
 331
 332 static void tlan_stop(struct net_device *dev)
 333 {
 334         struct tlan_priv *priv = netdev_priv(dev);
 335
 336         del_timer_sync(&priv->media_timer);
 337         tlan_read_and_clear_stats(dev, TLAN_RECORD);
 338         outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 339         /* Reset and power down phy */
 340         tlan_reset_adapter(dev);
 341         if (priv->timer.function != NULL) {
 342                 del_timer_sync(&priv->timer);
 343                 priv->timer.function = NULL;
 344         }
 345 }
 346
 347 #ifdef CONFIG_PM
 348
 349 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
 350 {
 351         struct net_device *dev = pci_get_drvdata(pdev);
 352
 353         if (netif_running(dev))
 354                 tlan_stop(dev);
 355
 356         netif_device_detach(dev);
 357         pci_save_state(pdev);
 358         pci_disable_device(pdev);
 359         pci_wake_from_d3(pdev, false);
 360         pci_set_power_state(pdev, PCI_D3hot);
 361
 362         return 0;
 363 }
 364
 365 static int tlan_resume(struct pci_dev *pdev)
 366 {
 367         struct net_device *dev = pci_get_drvdata(pdev);
 368         int rc = pci_enable_device(pdev);
 369
 370         if (rc)
 371                 return rc;
 372         pci_restore_state(pdev);
 373         pci_enable_wake(pdev, PCI_D0, 0);
 374         netif_device_attach(dev);
 375
 376         if (netif_running(dev))
 377                 tlan_start(dev);
 378
 379         return 0;
 380 }
 381
 382 #else /* CONFIG_PM */
 383
 384 #define tlan_suspend   NULL
 385 #define tlan_resume    NULL
 386
 387 #endif /* CONFIG_PM */
 388
 389
 390 static struct pci_driver tlan_driver = {
 391         .name           = "tlan",
 392         .id_table       = tlan_pci_tbl,
 393         .probe          = tlan_init_one,
 394         .remove         = tlan_remove_one,
 395         .suspend        = tlan_suspend,
 396         .resume         = tlan_resume,
 397 };
 398
 399 static int __init tlan_probe(void)
 400 {
 401         int rc = -ENODEV;
 402
 403         pr_info("%s", tlan_banner);
 404
 405         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 406
 407         /* Use new style PCI probing. Now the kernel will
 408            do most of this for us */
 409         rc = pci_register_driver(&tlan_driver);
 410
 411         if (rc != 0) {
 412                 pr_err("Could not register pci driver\n");
 413                 goto err_out_pci_free;
 414         }
 415
 416         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 417         tlan_eisa_probe();
 418
 419         pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 420                 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 421                 tlan_have_pci, tlan_have_eisa);
 422
 423         if (tlan_devices_installed == 0) {
 424                 rc = -ENODEV;
 425                 goto  err_out_pci_unreg;
 426         }
 427         return 0;
 428
 429 err_out_pci_unreg:
 430         pci_unregister_driver(&tlan_driver);
 431 err_out_pci_free:
 432         return rc;
 433 }
 434
 435
 436 static int tlan_init_one(struct pci_dev *pdev,
 437                                    const struct pci_device_id *ent)
 438 {
 439         return tlan_probe1(pdev, -1, -1, 0, ent);
 440 }
 441
 442
 443 /*
 444 ***************************************************************
 445 *       tlan_probe1
 446 *
 447 *       Returns:
 448 *               0 on success, error code on error
 449 *       Parms:
 450 *               none
 451 *
 452 *       The name is lower case to fit in with all the rest of
 453 *       the netcard_probe names.  This function looks for
 454 *       another TLan based adapter, setting it up with the
 455 *       allocated device struct if one is found.
 456 *       tlan_probe has been ported to the new net API and
 457 *       now allocates its own device structure. This function
 458 *       is also used by modules.
 459 *
 460 **************************************************************/
 461
 462 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
 463                        const struct pci_device_id *ent)
 464 {
 465
 466         struct net_device  *dev;
 467         struct tlan_priv  *priv;
 468         u16                device_id;
 469         int                reg, rc = -ENODEV;
 470
 471 #ifdef CONFIG_PCI
 472         if (pdev) {
 473                 rc = pci_enable_device(pdev);
 474                 if (rc)
 475                         return rc;
 476
 477                 rc = pci_request_regions(pdev, tlan_signature);
 478                 if (rc) {
 479                         pr_err("Could not reserve IO regions\n");
 480                         goto err_out;
 481                 }
 482         }
 483 #endif  /*  CONFIG_PCI  */
 484
 485         dev = alloc_etherdev(sizeof(struct tlan_priv));
 486         if (dev == NULL) {
 487                 rc = -ENOMEM;
 488                 goto err_out_regions;
 489         }
 490         SET_NETDEV_DEV(dev, &pdev->dev);
 491
 492         priv = netdev_priv(dev);
 493
 494         priv->pci_dev = pdev;
 495         priv->dev = dev;
 496
 497         /* Is this a PCI device? */
 498         if (pdev) {
 499                 u32                pci_io_base = 0;
 500
 501                 priv->adapter = &board_info[ent->driver_data];
 502
 503                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 504                 if (rc) {
 505                         pr_err("No suitable PCI mapping available\n");
 506                         goto err_out_free_dev;
 507                 }
 508
 509                 for (reg = 0; reg <= 5; reg++) {
 510                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 511                                 pci_io_base = pci_resource_start(pdev, reg);
 512                                 TLAN_DBG(TLAN_DEBUG_GNRL,
 513                                          "IO mapping is available at %x.\n",
 514                                          pci_io_base);
 515                                 break;
 516                         }
 517                 }
 518                 if (!pci_io_base) {
 519                         pr_err("No IO mappings available\n");
 520                         rc = -EIO;
 521                         goto err_out_free_dev;
 522                 }
 523
 524                 dev->base_addr = pci_io_base;
 525                 dev->irq = pdev->irq;
 526                 priv->adapter_rev = pdev->revision;
 527                 pci_set_master(pdev);
 528                 pci_set_drvdata(pdev, dev);
 529
 530         } else  {     /* EISA card */
 531                 /* This is a hack. We need to know which board structure
 532                  * is suited for this adapter */
 533                 device_id = inw(ioaddr + EISA_ID2);
 534                 if (device_id == 0x20F1) {
 535                         priv->adapter = &board_info[13]; /* NetFlex-3/E */
 536                         priv->adapter_rev = 23;         /* TLAN 2.3 */
 537                 } else {
 538                         priv->adapter = &board_info[14];
 539                         priv->adapter_rev = 10;         /* TLAN 1.0 */
 540                 }
 541                 dev->base_addr = ioaddr;
 542                 dev->irq = irq;
 543         }
 544
 545         /* Kernel parameters */
 546         if (dev->mem_start) {
 547                 priv->aui    = dev->mem_start & 0x01;
 548                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
 549                         : (dev->mem_start & 0x06) >> 1;
 550                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
 551                         : (dev->mem_start & 0x18) >> 3;
 552
 553                 if (priv->speed == 0x1)
 554                         priv->speed = TLAN_SPEED_10;
 555                 else if (priv->speed == 0x2)
 556                         priv->speed = TLAN_SPEED_100;
 557
 558                 debug = priv->debug = dev->mem_end;
 559         } else {
 560                 priv->aui    = aui[boards_found];
 561                 priv->speed  = speed[boards_found];
 562                 priv->duplex = duplex[boards_found];
 563                 priv->debug = debug;
 564         }
 565
 566         /* This will be used when we get an adapter error from
 567          * within our irq handler */
 568         INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
 569
 570         spin_lock_init(&priv->lock);
 571
 572         rc = tlan_init(dev);
 573         if (rc) {
 574                 pr_err("Could not set up device\n");
 575                 goto err_out_free_dev;
 576         }
 577
 578         rc = register_netdev(dev);
 579         if (rc) {
 580                 pr_err("Could not register device\n");
 581                 goto err_out_uninit;
 582         }
 583
 584
 585         tlan_devices_installed++;
 586         boards_found++;
 587
 588         /* pdev is NULL if this is an EISA device */
 589         if (pdev)
 590                 tlan_have_pci++;
 591         else {
 592                 priv->next_device = tlan_eisa_devices;
 593                 tlan_eisa_devices = dev;
 594                 tlan_have_eisa++;
 595         }
 596
 597         netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
 598                     (int)dev->irq,
 599                     (int)dev->base_addr,
 600                     priv->adapter->device_label,
 601                     priv->adapter_rev);
 602         return 0;
 603
 604 err_out_uninit:
 605         pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
 606                             priv->dma_storage_dma);
 607 err_out_free_dev:
 608         free_netdev(dev);
 609 err_out_regions:
 610 #ifdef CONFIG_PCI
 611         if (pdev)
 612                 pci_release_regions(pdev);
 613 #endif
 614 err_out:
 615         if (pdev)
 616                 pci_disable_device(pdev);
 617         return rc;
 618 }
 619
 620
 621 static void tlan_eisa_cleanup(void)
 622 {
 623         struct net_device *dev;
 624         struct tlan_priv *priv;
 625
 626         while (tlan_have_eisa) {
 627                 dev = tlan_eisa_devices;
 628                 priv = netdev_priv(dev);
 629                 if (priv->dma_storage) {
 630                         pci_free_consistent(priv->pci_dev, priv->dma_size,
 631                                             priv->dma_storage,
 632                                             priv->dma_storage_dma);
 633                 }
 634                 release_region(dev->base_addr, 0x10);
 635                 unregister_netdev(dev);
 636                 tlan_eisa_devices = priv->next_device;
 637                 free_netdev(dev);
 638                 tlan_have_eisa--;
 639         }
 640 }
 641
 642
 643 static void __exit tlan_exit(void)
 644 {
 645         pci_unregister_driver(&tlan_driver);
 646
 647         if (tlan_have_eisa)
 648                 tlan_eisa_cleanup();
 649
 650 }
 651
 652
 653 /* Module loading/unloading */
 654 module_init(tlan_probe);
 655 module_exit(tlan_exit);
 656
 657
 658
 659 /**************************************************************
 660  *      tlan_eisa_probe
 661  *
 662  *      Returns: 0 on success, 1 otherwise
 663  *
 664  *      Parms:   None
 665  *
 666  *
 667  *      This functions probes for EISA devices and calls
 668  *      TLan_probe1 when one is found.
 669  *
 670  *************************************************************/
 671
 672 static void  __init tlan_eisa_probe(void)
 673 {
 674         long    ioaddr;
 675         int     rc = -ENODEV;
 676         int     irq;
 677         u16     device_id;
 678
 679         if (!EISA_bus) {
 680                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 681                 return;
 682         }
 683
 684         /* Loop through all slots of the EISA bus */
 685         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 686
 687                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 688                          (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
 689                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 690                          (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
 691
 692
 693                 TLAN_DBG(TLAN_DEBUG_PROBE,
 694                          "Probing for EISA adapter at IO: 0x%4x : ",
 695                          (int) ioaddr);
 696                 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
 697                         goto out;
 698
 699                 if (inw(ioaddr + EISA_ID) != 0x110E) {
 700                         release_region(ioaddr, 0x10);
 701                         goto out;
 702                 }
 703
 704                 device_id = inw(ioaddr + EISA_ID2);
 705                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
 706                         release_region(ioaddr, 0x10);
 707                         goto out;
 708                 }
 709
 710                 /* check if adapter is enabled */
 711                 if (inb(ioaddr + EISA_CR) != 0x1) {
 712                         release_region(ioaddr, 0x10);
 713                         goto out2;
 714                 }
 715
 716                 if (debug == 0x10)
 717                         pr_info("Found one\n");
 718
 719
 720                 /* Get irq from board */
 721                 switch (inb(ioaddr + 0xcc0)) {
 722                 case(0x10):
 723                         irq = 5;
 724                         break;
 725                 case(0x20):
 726                         irq = 9;
 727                         break;
 728                 case(0x40):
 729                         irq = 10;
 730                         break;
 731                 case(0x80):
 732                         irq = 11;
 733                         break;
 734                 default:
 735                         goto out;
 736                 }
 737
 738
 739                 /* Setup the newly found eisa adapter */
 740                 rc = tlan_probe1(NULL, ioaddr, irq,
 741                                  12, NULL);
 742                 continue;
 743
 744 out:
 745                 if (debug == 0x10)
 746                         pr_info("None found\n");
 747                 continue;
 748
 749 out2:
 750                 if (debug == 0x10)
 751                         pr_info("Card found but it is not enabled, skipping\n");
 752                 continue;
 753
 754         }
 755
 756 }
 757
 758 #ifdef CONFIG_NET_POLL_CONTROLLER
 759 static void tlan_poll(struct net_device *dev)
 760 {
 761         disable_irq(dev->irq);
 762         tlan_handle_interrupt(dev->irq, dev);
 763         enable_irq(dev->irq);
 764 }
 765 #endif
 766
 767 static const struct net_device_ops tlan_netdev_ops = {
 768         .ndo_open               = tlan_open,
 769         .ndo_stop               = tlan_close,
 770         .ndo_start_xmit         = tlan_start_tx,
 771         .ndo_tx_timeout         = tlan_tx_timeout,
 772         .ndo_get_stats          = tlan_get_stats,
 773         .ndo_set_rx_mode        = tlan_set_multicast_list,
 774         .ndo_do_ioctl           = tlan_ioctl,
 775         .ndo_change_mtu         = eth_change_mtu,
 776         .ndo_set_mac_address    = eth_mac_addr,
 777         .ndo_validate_addr      = eth_validate_addr,
 778 #ifdef CONFIG_NET_POLL_CONTROLLER
 779         .ndo_poll_controller     = tlan_poll,
 780 #endif
 781 };
 782
 783 static void tlan_get_drvinfo(struct net_device *dev,
 784                              struct ethtool_drvinfo *info)
 785 {
 786         struct tlan_priv *priv = netdev_priv(dev);
 787
 788         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 789         if (priv->pci_dev)
 790                 strlcpy(info->bus_info, pci_name(priv->pci_dev),
 791                         sizeof(info->bus_info));
 792         else
 793                 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
 794 }
 795
 796 static int tlan_get_eeprom_len(struct net_device *dev)
 797 {
 798         return TLAN_EEPROM_SIZE;
 799 }
 800
 801 static int tlan_get_eeprom(struct net_device *dev,
 802                            struct ethtool_eeprom *eeprom, u8 *data)
 803 {
 804         int i;
 805
 806         for (i = 0; i < TLAN_EEPROM_SIZE; i++)
 807                 if (tlan_ee_read_byte(dev, i, &data[i]))
 808                         return -EIO;
 809
 810         return 0;
 811 }
 812
 813 static const struct ethtool_ops tlan_ethtool_ops = {
 814         .get_drvinfo    = tlan_get_drvinfo,
 815         .get_link       = ethtool_op_get_link,
 816         .get_eeprom_len = tlan_get_eeprom_len,
 817         .get_eeprom     = tlan_get_eeprom,
 818 };
 819
 820 /***************************************************************
 821  *      tlan_init
 822  *
 823  *      Returns:
 824  *              0 on success, error code otherwise.
 825  *      Parms:
 826  *              dev     The structure of the device to be
 827  *                      init'ed.
 828  *
 829  *      This function completes the initialization of the
 830  *      device structure and driver.  It reserves the IO
 831  *      addresses, allocates memory for the lists and bounce
 832  *      buffers, retrieves the MAC address from the eeprom
 833  *      and assignes the device's methods.
 834  *
 835  **************************************************************/
 836
 837 static int tlan_init(struct net_device *dev)
 838 {
 839         int             dma_size;
 840         int             err;
 841         int             i;
 842         struct tlan_priv        *priv;
 843
 844         priv = netdev_priv(dev);
 845
 846         dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
 847                 * (sizeof(struct tlan_list));
 848         priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
 849                                                  dma_size,
 850                                                  &priv->dma_storage_dma);
 851         priv->dma_size = dma_size;
 852
 853         if (priv->dma_storage == NULL) {
 854                 pr_err("Could not allocate lists and buffers for %s\n",
 855                        dev->name);
 856                 return -ENOMEM;
 857         }
 858         memset(priv->dma_storage, 0, dma_size);
 859         priv->rx_list = (struct tlan_list *)
 860                 ALIGN((unsigned long)priv->dma_storage, 8);
 861         priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
 862         priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
 863         priv->tx_list_dma =
 864                 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
 865
 866         err = 0;
 867         for (i = 0; i < ETH_ALEN; i++)
 868                 err |= tlan_ee_read_byte(dev,
 869                                          (u8) priv->adapter->addr_ofs + i,
 870                                          (u8 *) &dev->dev_addr[i]);
 871         if (err) {
 872                 pr_err("%s: Error reading MAC from eeprom: %d\n",
 873                        dev->name, err);
 874         }
 875         /* Olicom OC-2325/OC-2326 have the address byte-swapped */
 876         if (priv->adapter->addr_ofs == 0xf8) {
 877                 for (i = 0; i < ETH_ALEN; i += 2) {
 878                         char tmp = dev->dev_addr[i];
 879                         dev->dev_addr[i] = dev->dev_addr[i + 1];
 880                         dev->dev_addr[i + 1] = tmp;
 881                 }
 882         }
 883
 884         netif_carrier_off(dev);
 885
 886         /* Device methods */
 887         dev->netdev_ops = &tlan_netdev_ops;
 888         dev->ethtool_ops = &tlan_ethtool_ops;
 889         dev->watchdog_timeo = TX_TIMEOUT;
 890
 891         return 0;
 892
 893 }
 894
 895
 896
 897
 898 /***************************************************************
 899  *      tlan_open
 900  *
 901  *      Returns:
 902  *              0 on success, error code otherwise.
 903  *      Parms:
 904  *              dev     Structure of device to be opened.
 905  *
 906  *      This routine puts the driver and TLAN adapter in a
 907  *      state where it is ready to send and receive packets.
 908  *      It allocates the IRQ, resets and brings the adapter
 909  *      out of reset, and allows interrupts.  It also delays
 910  *      the startup for autonegotiation or sends a Rx GO
 911  *      command to the adapter, as appropriate.
 912  *
 913  **************************************************************/
 914
 915 static int tlan_open(struct net_device *dev)
 916 {
 917         struct tlan_priv        *priv = netdev_priv(dev);
 918         int             err;
 919
 920         priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
 921         err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
 922                           dev->name, dev);
 923
 924         if (err) {
 925                 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
 926                            dev->irq);
 927                 return err;
 928         }
 929
 930         init_timer(&priv->timer);
 931         init_timer(&priv->media_timer);
 932
 933         tlan_start(dev);
 934
 935         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
 936                  dev->name, priv->tlan_rev);
 937
 938         return 0;
 939
 940 }
 941
 942
 943
 944 /**************************************************************
 945  *      tlan_ioctl
 946  *
 947  *      Returns:
 948  *              0 on success, error code otherwise
 949  *      Params:
 950  *              dev     structure of device to receive ioctl.
 951  *
 952  *              rq      ifreq structure to hold userspace data.
 953  *
 954  *              cmd     ioctl command.
 955  *
 956  *
 957  *************************************************************/
 958
 959 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 960 {
 961         struct tlan_priv *priv = netdev_priv(dev);
 962         struct mii_ioctl_data *data = if_mii(rq);
 963         u32 phy   = priv->phy[priv->phy_num];
 964
 965         if (!priv->phy_online)
 966                 return -EAGAIN;
 967
 968         switch (cmd) {
 969         case SIOCGMIIPHY:               /* get address of MII PHY in use. */
 970                 data->phy_id = phy;
 971
 972
 973         case SIOCGMIIREG:               /* read MII PHY register. */
 974                 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
 975                                   data->reg_num & 0x1f, &data->val_out);
 976                 return 0;
 977
 978
 979         case SIOCSMIIREG:               /* write MII PHY register. */
 980                 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
 981                                    data->reg_num & 0x1f, data->val_in);
 982                 return 0;
 983         default:
 984                 return -EOPNOTSUPP;
 985         }
 986 }
 987
 988
 989 /***************************************************************
 990  *      tlan_tx_timeout
 991  *
 992  *      Returns: nothing
 993  *
 994  *      Params:
 995  *              dev     structure of device which timed out
 996  *                      during transmit.
 997  *
 998  **************************************************************/
 999
1000 static void tlan_tx_timeout(struct net_device *dev)
1001 {
1002
1003         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1004
1005         /* Ok so we timed out, lets see what we can do about it...*/
1006         tlan_free_lists(dev);
1007         tlan_reset_lists(dev);
1008         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1009         tlan_reset_adapter(dev);
1010         dev->trans_start = jiffies; /* prevent tx timeout */
1011         netif_wake_queue(dev);
1012
1013 }
1014
1015
1016 /***************************************************************
1017  *      tlan_tx_timeout_work
1018  *
1019  *      Returns: nothing
1020  *
1021  *      Params:
1022  *              work    work item of device which timed out
1023  *
1024  **************************************************************/
1025
1026 static void tlan_tx_timeout_work(struct work_struct *work)
1027 {
1028         struct tlan_priv        *priv =
1029                 container_of(work, struct tlan_priv, tlan_tqueue);
1030
1031         tlan_tx_timeout(priv->dev);
1032 }
1033
1034
1035
1036 /***************************************************************
1037  *      tlan_start_tx
1038  *
1039  *      Returns:
1040  *              0 on success, non-zero on failure.
1041  *      Parms:
1042  *              skb     A pointer to the sk_buff containing the
1043  *                      frame to be sent.
1044  *              dev     The device to send the data on.
1045  *
1046  *      This function adds a frame to the Tx list to be sent
1047  *      ASAP.  First it verifies that the adapter is ready and
1048  *      there is room in the queue.  Then it sets up the next
1049  *      available list, copies the frame to the corresponding
1050  *      buffer.  If the adapter Tx channel is idle, it gives
1051  *      the adapter a Tx Go command on the list, otherwise it
1052  *      sets the forward address of the previous list to point
1053  *      to this one.  Then it frees the sk_buff.
1054  *
1055  **************************************************************/
1056
1057 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1058 {
1059         struct tlan_priv *priv = netdev_priv(dev);
1060         dma_addr_t      tail_list_phys;
1061         struct tlan_list        *tail_list;
1062         unsigned long   flags;
1063         unsigned int    txlen;
1064
1065         if (!priv->phy_online) {
1066                 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1067                          dev->name);
1068                 dev_kfree_skb_any(skb);
1069                 return NETDEV_TX_OK;
1070         }
1071
1072         if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1073                 return NETDEV_TX_OK;
1074         txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1075
1076         tail_list = priv->tx_list + priv->tx_tail;
1077         tail_list_phys =
1078                 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1079
1080         if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1081                 TLAN_DBG(TLAN_DEBUG_TX,
1082                          "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1083                          dev->name, priv->tx_head, priv->tx_tail);
1084                 netif_stop_queue(dev);
1085                 priv->tx_busy_count++;
1086                 return NETDEV_TX_BUSY;
1087         }
1088
1089         tail_list->forward = 0;
1090
1091         tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1092                                                       skb->data, txlen,
1093                                                       PCI_DMA_TODEVICE);
1094         tlan_store_skb(tail_list, skb);
1095
1096         tail_list->frame_size = (u16) txlen;
1097         tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1098         tail_list->buffer[1].count = 0;
1099         tail_list->buffer[1].address = 0;
1100
1101         spin_lock_irqsave(&priv->lock, flags);
1102         tail_list->c_stat = TLAN_CSTAT_READY;
1103         if (!priv->tx_in_progress) {
1104                 priv->tx_in_progress = 1;
1105                 TLAN_DBG(TLAN_DEBUG_TX,
1106                          "TRANSMIT:  Starting TX on buffer %d\n",
1107                          priv->tx_tail);
1108                 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1109                 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1110         } else {
1111                 TLAN_DBG(TLAN_DEBUG_TX,
1112                          "TRANSMIT:  Adding buffer %d to TX channel\n",
1113                          priv->tx_tail);
1114                 if (priv->tx_tail == 0) {
1115                         (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1116                                 = tail_list_phys;
1117                 } else {
1118                         (priv->tx_list + (priv->tx_tail - 1))->forward
1119                                 = tail_list_phys;
1120                 }
1121         }
1122         spin_unlock_irqrestore(&priv->lock, flags);
1123
1124         CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1125
1126         return NETDEV_TX_OK;
1127
1128 }
1129
1130
1131
1132
1133 /***************************************************************
1134  *      tlan_handle_interrupt
1135  *
1136  *      Returns:
1137  *              Nothing
1138  *      Parms:
1139  *              irq     The line on which the interrupt
1140  *                      occurred.
1141  *              dev_id  A pointer to the device assigned to
1142  *                      this irq line.
1143  *
1144  *      This function handles an interrupt generated by its
1145  *      assigned TLAN adapter.  The function deactivates
1146  *      interrupts on its adapter, records the type of
1147  *      interrupt, executes the appropriate subhandler, and
1148  *      acknowdges the interrupt to the adapter (thus
1149  *      re-enabling adapter interrupts.
1150  *
1151  **************************************************************/
1152
1153 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1154 {
1155         struct net_device       *dev = dev_id;
1156         struct tlan_priv *priv = netdev_priv(dev);
1157         u16             host_int;
1158         u16             type;
1159
1160         spin_lock(&priv->lock);
1161
1162         host_int = inw(dev->base_addr + TLAN_HOST_INT);
1163         type = (host_int & TLAN_HI_IT_MASK) >> 2;
1164         if (type) {
1165                 u32     ack;
1166                 u32     host_cmd;
1167
1168                 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1169                 ack = tlan_int_vector[type](dev, host_int);
1170
1171                 if (ack) {
1172                         host_cmd = TLAN_HC_ACK | ack | (type << 18);
1173                         outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1174                 }
1175         }
1176
1177         spin_unlock(&priv->lock);
1178
1179         return IRQ_RETVAL(type);
1180 }
1181
1182
1183
1184
1185 /***************************************************************
1186  *      tlan_close
1187  *
1188  *      Returns:
1189  *              An error code.
1190  *      Parms:
1191  *              dev     The device structure of the device to
1192  *                      close.
1193  *
1194  *      This function shuts down the adapter.  It records any
1195  *      stats, puts the adapter into reset state, deactivates
1196  *      its time as needed, and frees the irq it is using.
1197  *
1198  **************************************************************/
1199
1200 static int tlan_close(struct net_device *dev)
1201 {
1202         tlan_stop(dev);
1203
1204         free_irq(dev->irq, dev);
1205         tlan_free_lists(dev);
1206         TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1207
1208         return 0;
1209
1210 }
1211
1212
1213
1214
1215 /***************************************************************
1216  *      tlan_get_stats
1217  *
1218  *      Returns:
1219  *              A pointer to the device's statistics structure.
1220  *      Parms:
1221  *              dev     The device structure to return the
1222  *                      stats for.
1223  *
1224  *      This function updates the devices statistics by reading
1225  *      the TLAN chip's onboard registers.  Then it returns the
1226  *      address of the statistics structure.
1227  *
1228  **************************************************************/
1229
1230 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1231 {
1232         struct tlan_priv        *priv = netdev_priv(dev);
1233         int i;
1234
1235         /* Should only read stats if open ? */
1236         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1237
1238         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1239                  priv->rx_eoc_count);
1240         TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1241                  priv->tx_busy_count);
1242         if (debug & TLAN_DEBUG_GNRL) {
1243                 tlan_print_dio(dev->base_addr);
1244                 tlan_phy_print(dev);
1245         }
1246         if (debug & TLAN_DEBUG_LIST) {
1247                 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1248                         tlan_print_list(priv->rx_list + i, "RX", i);
1249                 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1250                         tlan_print_list(priv->tx_list + i, "TX", i);
1251         }
1252
1253         return &dev->stats;
1254
1255 }
1256
1257
1258
1259
1260 /***************************************************************
1261  *      tlan_set_multicast_list
1262  *
1263  *      Returns:
1264  *              Nothing
1265  *      Parms:
1266  *              dev     The device structure to set the
1267  *                      multicast list for.
1268  *
1269  *      This function sets the TLAN adaptor to various receive
1270  *      modes.  If the IFF_PROMISC flag is set, promiscuous
1271  *      mode is acitviated.  Otherwise, promiscuous mode is
1272  *      turned off.  If the IFF_ALLMULTI flag is set, then
1273  *      the hash table is set to receive all group addresses.
1274  *      Otherwise, the first three multicast addresses are
1275  *      stored in AREG_1-3, and the rest are selected via the
1276  *      hash table, as necessary.
1277  *
1278  **************************************************************/
1279
1280 static void tlan_set_multicast_list(struct net_device *dev)
1281 {
1282         struct netdev_hw_addr *ha;
1283         u32                     hash1 = 0;
1284         u32                     hash2 = 0;
1285         int                     i;
1286         u32                     offset;
1287         u8                      tmp;
1288
1289         if (dev->flags & IFF_PROMISC) {
1290                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1291                 tlan_dio_write8(dev->base_addr,
1292                                 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1293         } else {
1294                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1295                 tlan_dio_write8(dev->base_addr,
1296                                 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1297                 if (dev->flags & IFF_ALLMULTI) {
1298                         for (i = 0; i < 3; i++)
1299                                 tlan_set_mac(dev, i + 1, NULL);
1300                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1301                                          0xffffffff);
1302                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1303                                          0xffffffff);
1304                 } else {
1305                         i = 0;
1306                         netdev_for_each_mc_addr(ha, dev) {
1307                                 if (i < 3) {
1308                                         tlan_set_mac(dev, i + 1,
1309                                                      (char *) &ha->addr);
1310                                 } else {
1311                                         offset =
1312                                                 tlan_hash_func((u8 *)&ha->addr);
1313                                         if (offset < 32)
1314                                                 hash1 |= (1 << offset);
1315                                         else
1316                                                 hash2 |= (1 << (offset - 32));
1317                                 }
1318                                 i++;
1319                         }
1320                         for ( ; i < 3; i++)
1321                                 tlan_set_mac(dev, i + 1, NULL);
1322                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1323                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1324                 }
1325         }
1326
1327 }
1328
1329
1330
1331 /*****************************************************************************
1332 ******************************************************************************
1333
1334 ThunderLAN driver interrupt vectors and table
1335
1336 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1337 Programmer's Guide" for more informations on handling interrupts
1338 generated by TLAN based adapters.
1339
1340 ******************************************************************************
1341 *****************************************************************************/
1342
1343
1344
1345
1346 /***************************************************************
1347  *      tlan_handle_tx_eof
1348  *
1349  *      Returns:
1350  *              1
1351  *      Parms:
1352  *              dev             Device assigned the IRQ that was
1353  *                              raised.
1354  *              host_int        The contents of the HOST_INT
1355  *                              port.
1356  *
1357  *      This function handles Tx EOF interrupts which are raised
1358  *      by the adapter when it has completed sending the
1359  *      contents of a buffer.  If detemines which list/buffer
1360  *      was completed and resets it.  If the buffer was the last
1361  *      in the channel (EOC), then the function checks to see if
1362  *      another buffer is ready to send, and if so, sends a Tx
1363  *      Go command.  Finally, the driver activates/continues the
1364  *      activity LED.
1365  *
1366  **************************************************************/
1367
1368 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1369 {
1370         struct tlan_priv        *priv = netdev_priv(dev);
1371         int             eoc = 0;
1372         struct tlan_list        *head_list;
1373         dma_addr_t      head_list_phys;
1374         u32             ack = 0;
1375         u16             tmp_c_stat;
1376
1377         TLAN_DBG(TLAN_DEBUG_TX,
1378                  "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1379                  priv->tx_head, priv->tx_tail);
1380         head_list = priv->tx_list + priv->tx_head;
1381
1382         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1383                && (ack < 255)) {
1384                 struct sk_buff *skb = tlan_get_skb(head_list);
1385
1386                 ack++;
1387                 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1388                                  max(skb->len,
1389                                      (unsigned int)TLAN_MIN_FRAME_SIZE),
1390                                  PCI_DMA_TODEVICE);
1391                 dev_kfree_skb_any(skb);
1392                 head_list->buffer[8].address = 0;
1393                 head_list->buffer[9].address = 0;
1394
1395                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1396                         eoc = 1;
1397
1398                 dev->stats.tx_bytes += head_list->frame_size;
1399
1400                 head_list->c_stat = TLAN_CSTAT_UNUSED;
1401                 netif_start_queue(dev);
1402                 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1403                 head_list = priv->tx_list + priv->tx_head;
1404         }
1405
1406         if (!ack)
1407                 netdev_info(dev,
1408                             "Received interrupt for uncompleted TX frame\n");
1409
1410         if (eoc) {
1411                 TLAN_DBG(TLAN_DEBUG_TX,
1412                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1413                          priv->tx_head, priv->tx_tail);
1414                 head_list = priv->tx_list + priv->tx_head;
1415                 head_list_phys = priv->tx_list_dma
1416                         + sizeof(struct tlan_list)*priv->tx_head;
1417                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1418                     == TLAN_CSTAT_READY) {
1419                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1420                         ack |= TLAN_HC_GO;
1421                 } else {
1422                         priv->tx_in_progress = 0;
1423                 }
1424         }
1425
1426         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1427                 tlan_dio_write8(dev->base_addr,
1428                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1429                 if (priv->timer.function == NULL) {
1430                         priv->timer.function = tlan_timer;
1431                         priv->timer.data = (unsigned long) dev;
1432                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1433                         priv->timer_set_at = jiffies;
1434                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1435                         add_timer(&priv->timer);
1436                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1437                         priv->timer_set_at = jiffies;
1438                 }
1439         }
1440
1441         return ack;
1442
1443 }
1444
1445
1446
1447
1448 /***************************************************************
1449  *      TLan_HandleStatOverflow
1450  *
1451  *      Returns:
1452  *              1
1453  *      Parms:
1454  *              dev             Device assigned the IRQ that was
1455  *                              raised.
1456  *              host_int        The contents of the HOST_INT
1457  *                              port.
1458  *
1459  *      This function handles the Statistics Overflow interrupt
1460  *      which means that one or more of the TLAN statistics
1461  *      registers has reached 1/2 capacity and needs to be read.
1462  *
1463  **************************************************************/
1464
1465 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1466 {
1467         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1468
1469         return 1;
1470
1471 }
1472
1473
1474
1475
1476 /***************************************************************
1477  *      TLan_HandleRxEOF
1478  *
1479  *      Returns:
1480  *              1
1481  *      Parms:
1482  *              dev             Device assigned the IRQ that was
1483  *                              raised.
1484  *              host_int        The contents of the HOST_INT
1485  *                              port.
1486  *
1487  *      This function handles the Rx EOF interrupt which
1488  *      indicates a frame has been received by the adapter from
1489  *      the net and the frame has been transferred to memory.
1490  *      The function determines the bounce buffer the frame has
1491  *      been loaded into, creates a new sk_buff big enough to
1492  *      hold the frame, and sends it to protocol stack.  It
1493  *      then resets the used buffer and appends it to the end
1494  *      of the list.  If the frame was the last in the Rx
1495  *      channel (EOC), the function restarts the receive channel
1496  *      by sending an Rx Go command to the adapter.  Then it
1497  *      activates/continues the activity LED.
1498  *
1499  **************************************************************/
1500
1501 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1502 {
1503         struct tlan_priv        *priv = netdev_priv(dev);
1504         u32             ack = 0;
1505         int             eoc = 0;
1506         struct tlan_list        *head_list;
1507         struct sk_buff  *skb;
1508         struct tlan_list        *tail_list;
1509         u16             tmp_c_stat;
1510         dma_addr_t      head_list_phys;
1511
1512         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1513                  priv->rx_head, priv->rx_tail);
1514         head_list = priv->rx_list + priv->rx_head;
1515         head_list_phys =
1516                 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1517
1518         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1519                && (ack < 255)) {
1520                 dma_addr_t frame_dma = head_list->buffer[0].address;
1521                 u32 frame_size = head_list->frame_size;
1522                 struct sk_buff *new_skb;
1523
1524                 ack++;
1525                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1526                         eoc = 1;
1527
1528                 new_skb = netdev_alloc_skb_ip_align(dev,
1529                                                     TLAN_MAX_FRAME_SIZE + 5);
1530                 if (!new_skb)
1531                         goto drop_and_reuse;
1532
1533                 skb = tlan_get_skb(head_list);
1534                 pci_unmap_single(priv->pci_dev, frame_dma,
1535                                  TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1536                 skb_put(skb, frame_size);
1537
1538                 dev->stats.rx_bytes += frame_size;
1539
1540                 skb->protocol = eth_type_trans(skb, dev);
1541                 netif_rx(skb);
1542
1543                 head_list->buffer[0].address =
1544                         pci_map_single(priv->pci_dev, new_skb->data,
1545                                        TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1546
1547                 tlan_store_skb(head_list, new_skb);
1548 drop_and_reuse:
1549                 head_list->forward = 0;
1550                 head_list->c_stat = 0;
1551                 tail_list = priv->rx_list + priv->rx_tail;
1552                 tail_list->forward = head_list_phys;
1553
1554                 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1555                 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1556                 head_list = priv->rx_list + priv->rx_head;
1557                 head_list_phys = priv->rx_list_dma
1558                         + sizeof(struct tlan_list)*priv->rx_head;
1559         }
1560
1561         if (!ack)
1562                 netdev_info(dev,
1563                             "Received interrupt for uncompleted RX frame\n");
1564
1565
1566         if (eoc) {
1567                 TLAN_DBG(TLAN_DEBUG_RX,
1568                          "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1569                          priv->rx_head, priv->rx_tail);
1570                 head_list = priv->rx_list + priv->rx_head;
1571                 head_list_phys = priv->rx_list_dma
1572                         + sizeof(struct tlan_list)*priv->rx_head;
1573                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1574                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1575                 priv->rx_eoc_count++;
1576         }
1577
1578         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1579                 tlan_dio_write8(dev->base_addr,
1580                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1581                 if (priv->timer.function == NULL)  {
1582                         priv->timer.function = tlan_timer;
1583                         priv->timer.data = (unsigned long) dev;
1584                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1585                         priv->timer_set_at = jiffies;
1586                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1587                         add_timer(&priv->timer);
1588                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1589                         priv->timer_set_at = jiffies;
1590                 }
1591         }
1592
1593         return ack;
1594
1595 }
1596
1597
1598
1599
1600 /***************************************************************
1601  *      tlan_handle_dummy
1602  *
1603  *      Returns:
1604  *              1
1605  *      Parms:
1606  *              dev             Device assigned the IRQ that was
1607  *                              raised.
1608  *              host_int        The contents of the HOST_INT
1609  *                              port.
1610  *
1611  *      This function handles the Dummy interrupt, which is
1612  *      raised whenever a test interrupt is generated by setting
1613  *      the Req_Int bit of HOST_CMD to 1.
1614  *
1615  **************************************************************/
1616
1617 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1618 {
1619         netdev_info(dev, "Test interrupt\n");
1620         return 1;
1621
1622 }
1623
1624
1625
1626
1627 /***************************************************************
1628  *      tlan_handle_tx_eoc
1629  *
1630  *      Returns:
1631  *              1
1632  *      Parms:
1633  *              dev             Device assigned the IRQ that was
1634  *                              raised.
1635  *              host_int        The contents of the HOST_INT
1636  *                              port.
1637  *
1638  *      This driver is structured to determine EOC occurrences by
1639  *      reading the CSTAT member of the list structure.  Tx EOC
1640  *      interrupts are disabled via the DIO INTDIS register.
1641  *      However, TLAN chips before revision 3.0 didn't have this
1642  *      functionality, so process EOC events if this is the
1643  *      case.
1644  *
1645  **************************************************************/
1646
1647 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1648 {
1649         struct tlan_priv        *priv = netdev_priv(dev);
1650         struct tlan_list                *head_list;
1651         dma_addr_t              head_list_phys;
1652         u32                     ack = 1;
1653
1654         host_int = 0;
1655         if (priv->tlan_rev < 0x30) {
1656                 TLAN_DBG(TLAN_DEBUG_TX,
1657                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1658                          priv->tx_head, priv->tx_tail);
1659                 head_list = priv->tx_list + priv->tx_head;
1660                 head_list_phys = priv->tx_list_dma
1661                         + sizeof(struct tlan_list)*priv->tx_head;
1662                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1663                     == TLAN_CSTAT_READY) {
1664                         netif_stop_queue(dev);
1665                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1666                         ack |= TLAN_HC_GO;
1667                 } else {
1668                         priv->tx_in_progress = 0;
1669                 }
1670         }
1671
1672         return ack;
1673
1674 }
1675
1676
1677
1678
1679 /***************************************************************
1680  *      tlan_handle_status_check
1681  *
1682  *      Returns:
1683  *              0 if Adapter check, 1 if Network Status check.
1684  *      Parms:
1685  *              dev             Device assigned the IRQ that was
1686  *                              raised.
1687  *              host_int        The contents of the HOST_INT
1688  *                              port.
1689  *
1690  *      This function handles Adapter Check/Network Status
1691  *      interrupts generated by the adapter.  It checks the
1692  *      vector in the HOST_INT register to determine if it is
1693  *      an Adapter Check interrupt.  If so, it resets the
1694  *      adapter.  Otherwise it clears the status registers
1695  *      and services the PHY.
1696  *
1697  **************************************************************/
1698
1699 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1700 {
1701         struct tlan_priv        *priv = netdev_priv(dev);
1702         u32             ack;
1703         u32             error;
1704         u8              net_sts;
1705         u32             phy;
1706         u16             tlphy_ctl;
1707         u16             tlphy_sts;
1708
1709         ack = 1;
1710         if (host_int & TLAN_HI_IV_MASK) {
1711                 netif_stop_queue(dev);
1712                 error = inl(dev->base_addr + TLAN_CH_PARM);
1713                 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1714                 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1715                 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1716
1717                 schedule_work(&priv->tlan_tqueue);
1718
1719                 netif_wake_queue(dev);
1720                 ack = 0;
1721         } else {
1722                 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1723                 phy = priv->phy[priv->phy_num];
1724
1725                 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1726                 if (net_sts) {
1727                         tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1728                         TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1729                                  dev->name, (unsigned) net_sts);
1730                 }
1731                 if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1732                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1733                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1734                         if (!(tlphy_sts & TLAN_TS_POLOK) &&
1735                             !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1736                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1737                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1738                                                    tlphy_ctl);
1739                         } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1740                                    (tlphy_ctl & TLAN_TC_SWAPOL)) {
1741                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1742                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1743                                                    tlphy_ctl);
1744                         }
1745
1746                         if (debug)
1747                                 tlan_phy_print(dev);
1748                 }
1749         }
1750
1751         return ack;
1752
1753 }
1754
1755
1756
1757
1758 /***************************************************************
1759  *      tlan_handle_rx_eoc
1760  *
1761  *      Returns:
1762  *              1
1763  *      Parms:
1764  *              dev             Device assigned the IRQ that was
1765  *                              raised.
1766  *              host_int        The contents of the HOST_INT
1767  *                              port.
1768  *
1769  *      This driver is structured to determine EOC occurrences by
1770  *      reading the CSTAT member of the list structure.  Rx EOC
1771  *      interrupts are disabled via the DIO INTDIS register.
1772  *      However, TLAN chips before revision 3.0 didn't have this
1773  *      CSTAT member or a INTDIS register, so if this chip is
1774  *      pre-3.0, process EOC interrupts normally.
1775  *
1776  **************************************************************/
1777
1778 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1779 {
1780         struct tlan_priv        *priv = netdev_priv(dev);
1781         dma_addr_t      head_list_phys;
1782         u32             ack = 1;
1783
1784         if (priv->tlan_rev < 0x30) {
1785                 TLAN_DBG(TLAN_DEBUG_RX,
1786                          "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1787                          priv->rx_head, priv->rx_tail);
1788                 head_list_phys = priv->rx_list_dma
1789                         + sizeof(struct tlan_list)*priv->rx_head;
1790                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1791                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1792                 priv->rx_eoc_count++;
1793         }
1794
1795         return ack;
1796
1797 }
1798
1799
1800
1801
1802 /*****************************************************************************
1803 ******************************************************************************
1804
1805 ThunderLAN driver timer function
1806
1807 ******************************************************************************
1808 *****************************************************************************/
1809
1810
1811 /***************************************************************
1812  *      tlan_timer
1813  *
1814  *      Returns:
1815  *              Nothing
1816  *      Parms:
1817  *              data    A value given to add timer when
1818  *                      add_timer was called.
1819  *
1820  *      This function handles timed functionality for the
1821  *      TLAN driver.  The two current timer uses are for
1822  *      delaying for autonegotionation and driving the ACT LED.
1823  *      -       Autonegotiation requires being allowed about
1824  *              2 1/2 seconds before attempting to transmit a
1825  *              packet.  It would be a very bad thing to hang
1826  *              the kernel this long, so the driver doesn't
1827  *              allow transmission 'til after this time, for
1828  *              certain PHYs.  It would be much nicer if all
1829  *              PHYs were interrupt-capable like the internal
1830  *              PHY.
1831  *      -       The ACT LED, which shows adapter activity, is
1832  *              driven by the driver, and so must be left on
1833  *              for a short period to power up the LED so it
1834  *              can be seen.  This delay can be changed by
1835  *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1836  *              if desired.  100 ms  produces a slightly
1837  *              sluggish response.
1838  *
1839  **************************************************************/
1840
1841 static void tlan_timer(unsigned long data)
1842 {
1843         struct net_device       *dev = (struct net_device *) data;
1844         struct tlan_priv        *priv = netdev_priv(dev);
1845         u32             elapsed;
1846         unsigned long   flags = 0;
1847
1848         priv->timer.function = NULL;
1849
1850         switch (priv->timer_type) {
1851         case TLAN_TIMER_PHY_PDOWN:
1852                 tlan_phy_power_down(dev);
1853                 break;
1854         case TLAN_TIMER_PHY_PUP:
1855                 tlan_phy_power_up(dev);
1856                 break;
1857         case TLAN_TIMER_PHY_RESET:
1858                 tlan_phy_reset(dev);
1859                 break;
1860         case TLAN_TIMER_PHY_START_LINK:
1861                 tlan_phy_start_link(dev);
1862                 break;
1863         case TLAN_TIMER_PHY_FINISH_AN:
1864                 tlan_phy_finish_auto_neg(dev);
1865                 break;
1866         case TLAN_TIMER_FINISH_RESET:
1867                 tlan_finish_reset(dev);
1868                 break;
1869         case TLAN_TIMER_ACTIVITY:
1870                 spin_lock_irqsave(&priv->lock, flags);
1871                 if (priv->timer.function == NULL) {
1872                         elapsed = jiffies - priv->timer_set_at;
1873                         if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1874                                 tlan_dio_write8(dev->base_addr,
1875                                                 TLAN_LED_REG, TLAN_LED_LINK);
1876                         } else  {
1877                                 priv->timer.function = tlan_timer;
1878                                 priv->timer.expires = priv->timer_set_at
1879                                         + TLAN_TIMER_ACT_DELAY;
1880                                 spin_unlock_irqrestore(&priv->lock, flags);
1881                                 add_timer(&priv->timer);
1882                                 break;
1883                         }
1884                 }
1885                 spin_unlock_irqrestore(&priv->lock, flags);
1886                 break;
1887         default:
1888                 break;
1889         }
1890
1891 }
1892
1893
1894 /*****************************************************************************
1895 ******************************************************************************
1896
1897 ThunderLAN driver adapter related routines
1898
1899 ******************************************************************************
1900 *****************************************************************************/
1901
1902
1903 /***************************************************************
1904  *      tlan_reset_lists
1905  *
1906  *      Returns:
1907  *              Nothing
1908  *      Parms:
1909  *              dev     The device structure with the list
1910  *                      stuctures to be reset.
1911  *
1912  *      This routine sets the variables associated with managing
1913  *      the TLAN lists to their initial values.
1914  *
1915  **************************************************************/
1916
1917 static void tlan_reset_lists(struct net_device *dev)
1918 {
1919         struct tlan_priv *priv = netdev_priv(dev);
1920         int             i;
1921         struct tlan_list        *list;
1922         dma_addr_t      list_phys;
1923         struct sk_buff  *skb;
1924
1925         priv->tx_head = 0;
1926         priv->tx_tail = 0;
1927         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1928                 list = priv->tx_list + i;
1929                 list->c_stat = TLAN_CSTAT_UNUSED;
1930                 list->buffer[0].address = 0;
1931                 list->buffer[2].count = 0;
1932                 list->buffer[2].address = 0;
1933                 list->buffer[8].address = 0;
1934                 list->buffer[9].address = 0;
1935         }
1936
1937         priv->rx_head = 0;
1938         priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1939         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1940                 list = priv->rx_list + i;
1941                 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1942                 list->c_stat = TLAN_CSTAT_READY;
1943                 list->frame_size = TLAN_MAX_FRAME_SIZE;
1944                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1945                 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1946                 if (!skb)
1947                         break;
1948
1949                 list->buffer[0].address = pci_map_single(priv->pci_dev,
1950                                                          skb->data,
1951                                                          TLAN_MAX_FRAME_SIZE,
1952                                                          PCI_DMA_FROMDEVICE);
1953                 tlan_store_skb(list, skb);
1954                 list->buffer[1].count = 0;
1955                 list->buffer[1].address = 0;
1956                 list->forward = list_phys + sizeof(struct tlan_list);
1957         }
1958
1959         /* in case ran out of memory early, clear bits */
1960         while (i < TLAN_NUM_RX_LISTS) {
1961                 tlan_store_skb(priv->rx_list + i, NULL);
1962                 ++i;
1963         }
1964         list->forward = 0;
1965
1966 }
1967
1968
1969 static void tlan_free_lists(struct net_device *dev)
1970 {
1971         struct tlan_priv *priv = netdev_priv(dev);
1972         int             i;
1973         struct tlan_list        *list;
1974         struct sk_buff  *skb;
1975
1976         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1977                 list = priv->tx_list + i;
1978                 skb = tlan_get_skb(list);
1979                 if (skb) {
1980                         pci_unmap_single(
1981                                 priv->pci_dev,
1982                                 list->buffer[0].address,
1983                                 max(skb->len,
1984                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
1985                                 PCI_DMA_TODEVICE);
1986                         dev_kfree_skb_any(skb);
1987                         list->buffer[8].address = 0;
1988                         list->buffer[9].address = 0;
1989                 }
1990         }
1991
1992         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1993                 list = priv->rx_list + i;
1994                 skb = tlan_get_skb(list);
1995                 if (skb) {
1996                         pci_unmap_single(priv->pci_dev,
1997                                          list->buffer[0].address,
1998                                          TLAN_MAX_FRAME_SIZE,
1999                                          PCI_DMA_FROMDEVICE);
2000                         dev_kfree_skb_any(skb);
2001                         list->buffer[8].address = 0;
2002                         list->buffer[9].address = 0;
2003                 }
2004         }
2005 }
2006
2007
2008
2009
2010 /***************************************************************
2011  *      tlan_print_dio
2012  *
2013  *      Returns:
2014  *              Nothing
2015  *      Parms:
2016  *              io_base         Base IO port of the device of
2017  *                              which to print DIO registers.
2018  *
2019  *      This function prints out all the internal (DIO)
2020  *      registers of a TLAN chip.
2021  *
2022  **************************************************************/
2023
2024 static void tlan_print_dio(u16 io_base)
2025 {
2026         u32 data0, data1;
2027         int     i;
2028
2029         pr_info("Contents of internal registers for io base 0x%04hx\n",
2030                 io_base);
2031         pr_info("Off.  +0        +4\n");
2032         for (i = 0; i < 0x4C; i += 8) {
2033                 data0 = tlan_dio_read32(io_base, i);
2034                 data1 = tlan_dio_read32(io_base, i + 0x4);
2035                 pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2036         }
2037
2038 }
2039
2040
2041
2042
2043 /***************************************************************
2044  *      TLan_PrintList
2045  *
2046  *      Returns:
2047  *              Nothing
2048  *      Parms:
2049  *              list    A pointer to the struct tlan_list structure to
2050  *                      be printed.
2051  *              type    A string to designate type of list,
2052  *                      "Rx" or "Tx".
2053  *              num     The index of the list.
2054  *
2055  *      This function prints out the contents of the list
2056  *      pointed to by the list parameter.
2057  *
2058  **************************************************************/
2059
2060 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2061 {
2062         int i;
2063
2064         pr_info("%s List %d at %p\n", type, num, list);
2065         pr_info("   Forward    = 0x%08x\n",  list->forward);
2066         pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2067         pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2068         /* for (i = 0; i < 10; i++) { */
2069         for (i = 0; i < 2; i++) {
2070                 pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2071                         i, list->buffer[i].count, list->buffer[i].address);
2072         }
2073
2074 }
2075
2076
2077
2078
2079 /***************************************************************
2080  *      tlan_read_and_clear_stats
2081  *
2082  *      Returns:
2083  *              Nothing
2084  *      Parms:
2085  *              dev     Pointer to device structure of adapter
2086  *                      to which to read stats.
2087  *              record  Flag indicating whether to add
2088  *
2089  *      This functions reads all the internal status registers
2090  *      of the TLAN chip, which clears them as a side effect.
2091  *      It then either adds the values to the device's status
2092  *      struct, or discards them, depending on whether record
2093  *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2094  *
2095  **************************************************************/
2096
2097 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2098 {
2099         u32             tx_good, tx_under;
2100         u32             rx_good, rx_over;
2101         u32             def_tx, crc, code;
2102         u32             multi_col, single_col;
2103         u32             excess_col, late_col, loss;
2104
2105         outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2106         tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2107         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2108         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2109         tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2110
2111         outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2112         rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2113         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2114         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2115         rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2116
2117         outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2118         def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2119         def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2120         crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2121         code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2122
2123         outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2124         multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2125         multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2126         single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2127         single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2128
2129         outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2130         excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2131         late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2132         loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2133
2134         if (record) {
2135                 dev->stats.rx_packets += rx_good;
2136                 dev->stats.rx_errors  += rx_over + crc + code;
2137                 dev->stats.tx_packets += tx_good;
2138                 dev->stats.tx_errors  += tx_under + loss;
2139                 dev->stats.collisions += multi_col
2140                         + single_col + excess_col + late_col;
2141
2142                 dev->stats.rx_over_errors    += rx_over;
2143                 dev->stats.rx_crc_errors     += crc;
2144                 dev->stats.rx_frame_errors   += code;
2145
2146                 dev->stats.tx_aborted_errors += tx_under;
2147                 dev->stats.tx_carrier_errors += loss;
2148         }
2149
2150 }
2151
2152
2153
2154
2155 /***************************************************************
2156  *      TLan_Reset
2157  *
2158  *      Returns:
2159  *              0
2160  *      Parms:
2161  *              dev     Pointer to device structure of adapter
2162  *                      to be reset.
2163  *
2164  *      This function resets the adapter and it's physical
2165  *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2166  *      Programmer's Guide" for details.  The routine tries to
2167  *      implement what is detailed there, though adjustments
2168  *      have been made.
2169  *
2170  **************************************************************/
2171
2172 static void
2173 tlan_reset_adapter(struct net_device *dev)
2174 {
2175         struct tlan_priv        *priv = netdev_priv(dev);
2176         int             i;
2177         u32             addr;
2178         u32             data;
2179         u8              data8;
2180
2181         priv->tlan_full_duplex = false;
2182         priv->phy_online = 0;
2183         netif_carrier_off(dev);
2184
2185 /*  1.  Assert reset bit. */
2186
2187         data = inl(dev->base_addr + TLAN_HOST_CMD);
2188         data |= TLAN_HC_AD_RST;
2189         outl(data, dev->base_addr + TLAN_HOST_CMD);
2190
2191         udelay(1000);
2192
2193 /*  2.  Turn off interrupts. (Probably isn't necessary) */
2194
2195         data = inl(dev->base_addr + TLAN_HOST_CMD);
2196         data |= TLAN_HC_INT_OFF;
2197         outl(data, dev->base_addr + TLAN_HOST_CMD);
2198
2199 /*  3.  Clear AREGs and HASHs. */
2200
2201         for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2202                 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2203
2204 /*  4.  Setup NetConfig register. */
2205
2206         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2207         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2208
2209 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2210
2211         outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2212         outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2213
2214 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2215
2216         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2217         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2218         tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2219
2220 /*  7.  Setup the remaining registers. */
2221
2222         if (priv->tlan_rev >= 0x30) {
2223                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2224                 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2225         }
2226         tlan_phy_detect(dev);
2227         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2228
2229         if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2230                 data |= TLAN_NET_CFG_BIT;
2231                 if (priv->aui == 1) {
2232                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2233                 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2234                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2235                         priv->tlan_full_duplex = true;
2236                 } else {
2237                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2238                 }
2239         }
2240
2241         /* don't power down internal PHY if we're going to use it */
2242         if (priv->phy_num == 0 ||
2243            (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2244                 data |= TLAN_NET_CFG_PHY_EN;
2245         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2246
2247         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2248                 tlan_finish_reset(dev);
2249         else
2250                 tlan_phy_power_down(dev);
2251
2252 }
2253
2254
2255
2256
2257 static void
2258 tlan_finish_reset(struct net_device *dev)
2259 {
2260         struct tlan_priv        *priv = netdev_priv(dev);
2261         u8              data;
2262         u32             phy;
2263         u8              sio;
2264         u16             status;
2265         u16             partner;
2266         u16             tlphy_ctl;
2267         u16             tlphy_par;
2268         u16             tlphy_id1, tlphy_id2;
2269         int             i;
2270
2271         phy = priv->phy[priv->phy_num];
2272
2273         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2274         if (priv->tlan_full_duplex)
2275                 data |= TLAN_NET_CMD_DUPLEX;
2276         tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2277         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2278         if (priv->phy_num == 0)
2279                 data |= TLAN_NET_MASK_MASK7;
2280         tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2281         tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2282         tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2283         tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2284
2285         if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2286             (priv->aui)) {
2287                 status = MII_GS_LINK;
2288                 netdev_info(dev, "Link forced\n");
2289         } else {
2290                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2291                 udelay(1000);
2292                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2293                 if (status & MII_GS_LINK) {
2294                         /* We only support link info on Nat.Sem. PHY's */
2295                         if ((tlphy_id1 == NAT_SEM_ID1) &&
2296                             (tlphy_id2 == NAT_SEM_ID2)) {
2297                                 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2298                                         &partner);
2299                                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2300                                         &tlphy_par);
2301
2302                                 netdev_info(dev,
2303                                         "Link active, %s %uMbps %s-Duplex\n",
2304                                         !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2305                                         ? "forced" : "Autonegotiation enabled,",
2306                                         tlphy_par & TLAN_PHY_SPEED_100
2307                                         ? 100 : 10,
2308                                         tlphy_par & TLAN_PHY_DUPLEX_FULL
2309                                         ? "Full" : "Half");
2310
2311                                 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2312                                         netdev_info(dev, "Partner capability:");
2313                                         for (i = 5; i < 10; i++)
2314                                                 if (partner & (1 << i))
2315                                                         pr_cont(" %s",
2316                                                                 media[i-5]);
2317                                         pr_cont("\n");
2318                                 }
2319                         } else
2320                                 netdev_info(dev, "Link active\n");
2321                         /* Enabling link beat monitoring */
2322                         priv->media_timer.function = tlan_phy_monitor;
2323                         priv->media_timer.data = (unsigned long) dev;
2324                         priv->media_timer.expires = jiffies + HZ;
2325                         add_timer(&priv->media_timer);
2326                 }
2327         }
2328
2329         if (priv->phy_num == 0) {
2330                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2331                 tlphy_ctl |= TLAN_TC_INTEN;
2332                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2333                 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2334                 sio |= TLAN_NET_SIO_MINTEN;
2335                 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2336         }
2337
2338         if (status & MII_GS_LINK) {
2339                 tlan_set_mac(dev, 0, dev->dev_addr);
2340                 priv->phy_online = 1;
2341                 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2342                 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2343                         outb((TLAN_HC_REQ_INT >> 8),
2344                              dev->base_addr + TLAN_HOST_CMD + 1);
2345                 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2346                 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2347                 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2348                 netif_carrier_on(dev);
2349         } else {
2350                 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2351                 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2352                 return;
2353         }
2354         tlan_set_multicast_list(dev);
2355
2356 }
2357
2358
2359
2360
2361 /***************************************************************
2362  *      tlan_set_mac
2363  *
2364  *      Returns:
2365  *              Nothing
2366  *      Parms:
2367  *              dev     Pointer to device structure of adapter
2368  *                      on which to change the AREG.
2369  *              areg    The AREG to set the address in (0 - 3).
2370  *              mac     A pointer to an array of chars.  Each
2371  *                      element stores one byte of the address.
2372  *                      IE, it isn't in ascii.
2373  *
2374  *      This function transfers a MAC address to one of the
2375  *      TLAN AREGs (address registers).  The TLAN chip locks
2376  *      the register on writing to offset 0 and unlocks the
2377  *      register after writing to offset 5.  If NULL is passed
2378  *      in mac, then the AREG is filled with 0's.
2379  *
2380  **************************************************************/
2381
2382 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2383 {
2384         int i;
2385
2386         areg *= 6;
2387
2388         if (mac != NULL) {
2389                 for (i = 0; i < 6; i++)
2390                         tlan_dio_write8(dev->base_addr,
2391                                         TLAN_AREG_0 + areg + i, mac[i]);
2392         } else {
2393                 for (i = 0; i < 6; i++)
2394                         tlan_dio_write8(dev->base_addr,
2395                                         TLAN_AREG_0 + areg + i, 0);
2396         }
2397
2398 }
2399
2400
2401
2402
2403 /*****************************************************************************
2404 ******************************************************************************
2405
2406 ThunderLAN driver PHY layer routines
2407
2408 ******************************************************************************
2409 *****************************************************************************/
2410
2411
2412
2413 /*********************************************************************
2414  *      tlan_phy_print
2415  *
2416  *      Returns:
2417  *              Nothing
2418  *      Parms:
2419  *              dev     A pointer to the device structure of the
2420  *                      TLAN device having the PHYs to be detailed.
2421  *
2422  *      This function prints the registers a PHY (aka transceiver).
2423  *
2424  ********************************************************************/
2425
2426 static void tlan_phy_print(struct net_device *dev)
2427 {
2428         struct tlan_priv *priv = netdev_priv(dev);
2429         u16 i, data0, data1, data2, data3, phy;
2430
2431         phy = priv->phy[priv->phy_num];
2432
2433         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2434                 netdev_info(dev, "Unmanaged PHY\n");
2435         } else if (phy <= TLAN_PHY_MAX_ADDR) {
2436                 netdev_info(dev, "PHY 0x%02x\n", phy);
2437                 pr_info("   Off.  +0     +1     +2     +3\n");
2438                 for (i = 0; i < 0x20; i += 4) {
2439                         tlan_mii_read_reg(dev, phy, i, &data0);
2440                         tlan_mii_read_reg(dev, phy, i + 1, &data1);
2441                         tlan_mii_read_reg(dev, phy, i + 2, &data2);
2442                         tlan_mii_read_reg(dev, phy, i + 3, &data3);
2443                         pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2444                                 i, data0, data1, data2, data3);
2445                 }
2446         } else {
2447                 netdev_info(dev, "Invalid PHY\n");
2448         }
2449
2450 }
2451
2452
2453
2454
2455 /*********************************************************************
2456  *      tlan_phy_detect
2457  *
2458  *      Returns:
2459  *              Nothing
2460  *      Parms:
2461  *              dev     A pointer to the device structure of the adapter
2462  *                      for which the PHY needs determined.
2463  *
2464  *      So far I've found that adapters which have external PHYs
2465  *      may also use the internal PHY for part of the functionality.
2466  *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2467  *      chip has an internal PHY, and then finds the first external
2468  *      PHY (starting from address 0) if it exists).
2469  *
2470  ********************************************************************/
2471
2472 static void tlan_phy_detect(struct net_device *dev)
2473 {
2474         struct tlan_priv *priv = netdev_priv(dev);
2475         u16             control;
2476         u16             hi;
2477         u16             lo;
2478         u32             phy;
2479
2480         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2481                 priv->phy_num = 0xffff;
2482                 return;
2483         }
2484
2485         tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2486
2487         if (hi != 0xffff)
2488                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2489         else
2490                 priv->phy[0] = TLAN_PHY_NONE;
2491
2492         priv->phy[1] = TLAN_PHY_NONE;
2493         for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2494                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2495                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2496                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2497                 if ((control != 0xffff) ||
2498                     (hi != 0xffff) || (lo != 0xffff)) {
2499                         TLAN_DBG(TLAN_DEBUG_GNRL,
2500                                  "PHY found at %02x %04x %04x %04x\n",
2501                                  phy, control, hi, lo);
2502                         if ((priv->phy[1] == TLAN_PHY_NONE) &&
2503                             (phy != TLAN_PHY_MAX_ADDR)) {
2504                                 priv->phy[1] = phy;
2505                         }
2506                 }
2507         }
2508
2509         if (priv->phy[1] != TLAN_PHY_NONE)
2510                 priv->phy_num = 1;
2511         else if (priv->phy[0] != TLAN_PHY_NONE)
2512                 priv->phy_num = 0;
2513         else
2514                 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2515
2516 }
2517
2518
2519
2520
2521 static void tlan_phy_power_down(struct net_device *dev)
2522 {
2523         struct tlan_priv        *priv = netdev_priv(dev);
2524         u16             value;
2525
2526         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2527         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2528         tlan_mii_sync(dev->base_addr);
2529         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2530         if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2531                 /* if using internal PHY, the external PHY must be powered on */
2532                 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2533                         value = MII_GC_ISOLATE; /* just isolate it from MII */
2534                 tlan_mii_sync(dev->base_addr);
2535                 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2536         }
2537
2538         /* Wait for 50 ms and powerup
2539          * This is abitrary.  It is intended to make sure the
2540          * transceiver settles.
2541          */
2542         tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2543
2544 }
2545
2546
2547
2548
2549 static void tlan_phy_power_up(struct net_device *dev)
2550 {
2551         struct tlan_priv        *priv = netdev_priv(dev);
2552         u16             value;
2553
2554         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2555         tlan_mii_sync(dev->base_addr);
2556         value = MII_GC_LOOPBK;
2557         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2558         tlan_mii_sync(dev->base_addr);
2559         /* Wait for 500 ms and reset the
2560          * transceiver.  The TLAN docs say both 50 ms and
2561          * 500 ms, so do the longer, just in case.
2562          */
2563         tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2564
2565 }
2566
2567
2568
2569
2570 static void tlan_phy_reset(struct net_device *dev)
2571 {
2572         struct tlan_priv        *priv = netdev_priv(dev);
2573         u16             phy;
2574         u16             value;
2575         unsigned long timeout = jiffies + HZ;
2576
2577         phy = priv->phy[priv->phy_num];
2578
2579         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2580         tlan_mii_sync(dev->base_addr);
2581         value = MII_GC_LOOPBK | MII_GC_RESET;
2582         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2583         do {
2584                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2585                 if (time_after(jiffies, timeout)) {
2586                         netdev_err(dev, "PHY reset timeout\n");
2587                         return;
2588                 }
2589         } while (value & MII_GC_RESET);
2590
2591         /* Wait for 500 ms and initialize.
2592          * I don't remember why I wait this long.
2593          * I've changed this to 50ms, as it seems long enough.
2594          */
2595         tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2596
2597 }
2598
2599
2600
2601
2602 static void tlan_phy_start_link(struct net_device *dev)
2603 {
2604         struct tlan_priv        *priv = netdev_priv(dev);
2605         u16             ability;
2606         u16             control;
2607         u16             data;
2608         u16             phy;
2609         u16             status;
2610         u16             tctl;
2611
2612         phy = priv->phy[priv->phy_num];
2613         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2614         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2615         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2616
2617         if ((status & MII_GS_AUTONEG) &&
2618             (!priv->aui)) {
2619                 ability = status >> 11;
2620                 if (priv->speed  == TLAN_SPEED_10 &&
2621                     priv->duplex == TLAN_DUPLEX_HALF) {
2622                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2623                 } else if (priv->speed == TLAN_SPEED_10 &&
2624                            priv->duplex == TLAN_DUPLEX_FULL) {
2625                         priv->tlan_full_duplex = true;
2626                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2627                 } else if (priv->speed == TLAN_SPEED_100 &&
2628                            priv->duplex == TLAN_DUPLEX_HALF) {
2629                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2630                 } else if (priv->speed == TLAN_SPEED_100 &&
2631                            priv->duplex == TLAN_DUPLEX_FULL) {
2632                         priv->tlan_full_duplex = true;
2633                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2634                 } else {
2635
2636                         /* Set Auto-Neg advertisement */
2637                         tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2638                                            (ability << 5) | 1);
2639                         /* Enablee Auto-Neg */
2640                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2641                         /* Restart Auto-Neg */
2642                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2643                         /* Wait for 4 sec for autonegotiation
2644                          * to complete.  The max spec time is less than this
2645                          * but the card need additional time to start AN.
2646                          * .5 sec should be plenty extra.
2647                          */
2648                         netdev_info(dev, "Starting autonegotiation\n");
2649                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2650                         return;
2651                 }
2652
2653         }
2654
2655         if ((priv->aui) && (priv->phy_num != 0)) {
2656                 priv->phy_num = 0;
2657                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2658                         | TLAN_NET_CFG_PHY_EN;
2659                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2660                 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2661                 return;
2662         } else if (priv->phy_num == 0) {
2663                 control = 0;
2664                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2665                 if (priv->aui) {
2666                         tctl |= TLAN_TC_AUISEL;
2667                 } else {
2668                         tctl &= ~TLAN_TC_AUISEL;
2669                         if (priv->duplex == TLAN_DUPLEX_FULL) {
2670                                 control |= MII_GC_DUPLEX;
2671                                 priv->tlan_full_duplex = true;
2672                         }
2673                         if (priv->speed == TLAN_SPEED_100)
2674                                 control |= MII_GC_SPEEDSEL;
2675                 }
2676                 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2677                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2678         }
2679
2680         /* Wait for 2 sec to give the transceiver time
2681          * to establish link.
2682          */
2683         tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2684
2685 }
2686
2687
2688
2689
2690 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2691 {
2692         struct tlan_priv        *priv = netdev_priv(dev);
2693         u16             an_adv;
2694         u16             an_lpa;
2695         u16             mode;
2696         u16             phy;
2697         u16             status;
2698
2699         phy = priv->phy[priv->phy_num];
2700
2701         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2702         udelay(1000);
2703         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2704
2705         if (!(status & MII_GS_AUTOCMPLT)) {
2706                 /* Wait for 8 sec to give the process
2707                  * more time.  Perhaps we should fail after a while.
2708                  */
2709                 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2710                 return;
2711         }
2712
2713         netdev_info(dev, "Autonegotiation complete\n");
2714         tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2715         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2716         mode = an_adv & an_lpa & 0x03E0;
2717         if (mode & 0x0100)
2718                 priv->tlan_full_duplex = true;
2719         else if (!(mode & 0x0080) && (mode & 0x0040))
2720                 priv->tlan_full_duplex = true;
2721
2722         /* switch to internal PHY for 10 Mbps */
2723         if ((!(mode & 0x0180)) &&
2724             (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2725             (priv->phy_num != 0)) {
2726                 priv->phy_num = 0;
2727                 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2728                 return;
2729         }
2730
2731         if (priv->phy_num == 0) {
2732                 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2733                     (an_adv & an_lpa & 0x0040)) {
2734                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2735                                            MII_GC_AUTOENB | MII_GC_DUPLEX);
2736                         netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2737                 } else {
2738                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2739                                            MII_GC_AUTOENB);
2740                         netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2741                 }
2742         }
2743
2744         /* Wait for 100 ms.  No reason in partiticular.
2745          */
2746         tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2747
2748 }
2749
2750
2751 /*********************************************************************
2752  *
2753  *     tlan_phy_monitor
2754  *
2755  *     Returns:
2756  *            None
2757  *
2758  *     Params:
2759  *            data           The device structure of this device.
2760  *
2761  *
2762  *     This function monitors PHY condition by reading the status
2763  *     register via the MII bus, controls LINK LED and notifies the
2764  *     kernel about link state.
2765  *
2766  *******************************************************************/
2767
2768 static void tlan_phy_monitor(unsigned long data)
2769 {
2770         struct net_device *dev = (struct net_device *) data;
2771         struct tlan_priv *priv = netdev_priv(dev);
2772         u16     phy;
2773         u16     phy_status;
2774
2775         phy = priv->phy[priv->phy_num];
2776
2777         /* Get PHY status register */
2778         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2779
2780         /* Check if link has been lost */
2781         if (!(phy_status & MII_GS_LINK)) {
2782                 if (netif_carrier_ok(dev)) {
2783                         printk(KERN_DEBUG "TLAN: %s has lost link\n",
2784                                dev->name);
2785                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2786                         netif_carrier_off(dev);
2787                         if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2788                                 /* power down internal PHY */
2789                                 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2790                                            MII_GC_ISOLATE;
2791
2792                                 tlan_mii_sync(dev->base_addr);
2793                                 tlan_mii_write_reg(dev, priv->phy[0],
2794                                                    MII_GEN_CTL, data);
2795                                 /* set to external PHY */
2796                                 priv->phy_num = 1;
2797                                 /* restart autonegotiation */
2798                                 tlan_set_timer(dev, msecs_to_jiffies(400),
2799                                                TLAN_TIMER_PHY_PDOWN);
2800                                 return;
2801                         }
2802                 }
2803         }
2804
2805         /* Link restablished? */
2806         if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2807                 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2808                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2809                        dev->name);
2810                 netif_carrier_on(dev);
2811         }
2812         priv->media_timer.expires = jiffies + HZ;
2813         add_timer(&priv->media_timer);
2814 }
2815
2816
2817 /*****************************************************************************
2818 ******************************************************************************
2819
2820 ThunderLAN driver MII routines
2821
2822 these routines are based on the information in chap. 2 of the
2823 "ThunderLAN Programmer's Guide", pp. 15-24.
2824
2825 ******************************************************************************
2826 *****************************************************************************/
2827
2828
2829 /***************************************************************
2830  *      tlan_mii_read_reg
2831  *
2832  *      Returns:
2833  *              false   if ack received ok
2834  *              true    if no ack received or other error
2835  *
2836  *      Parms:
2837  *              dev             The device structure containing
2838  *                              The io address and interrupt count
2839  *                              for this device.
2840  *              phy             The address of the PHY to be queried.
2841  *              reg             The register whose contents are to be
2842  *                              retrieved.
2843  *              val             A pointer to a variable to store the
2844  *                              retrieved value.
2845  *
2846  *      This function uses the TLAN's MII bus to retrieve the contents
2847  *      of a given register on a PHY.  It sends the appropriate info
2848  *      and then reads the 16-bit register value from the MII bus via
2849  *      the TLAN SIO register.
2850  *
2851  **************************************************************/
2852
2853 static bool
2854 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2855 {
2856         u8      nack;
2857         u16     sio, tmp;
2858         u32     i;
2859         bool    err;
2860         int     minten;
2861         struct tlan_priv *priv = netdev_priv(dev);
2862         unsigned long flags = 0;
2863
2864         err = false;
2865         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2866         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2867
2868         if (!in_irq())
2869                 spin_lock_irqsave(&priv->lock, flags);
2870
2871         tlan_mii_sync(dev->base_addr);
2872
2873         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2874         if (minten)
2875                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2876
2877         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
2878         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* read  (10b) */
2879         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
2880         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
2881
2882
2883         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);        /* change direction */
2884
2885         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* clock idle bit */
2886         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* wait 300ns */
2888
2889         nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);   /* check for ACK */
2890         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);           /* finish ACK */
2891         if (nack) {                                     /* no ACK, so fake it */
2892                 for (i = 0; i < 16; i++) {
2893                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2894                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2895                 }
2896                 tmp = 0xffff;
2897                 err = true;
2898         } else {                                        /* ACK, so read data */
2899                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2900                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2901                         if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2902                                 tmp |= i;
2903                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2904                 }
2905         }
2906
2907
2908         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* idle cycle */
2909         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2910
2911         if (minten)
2912                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2913
2914         *val = tmp;
2915
2916         if (!in_irq())
2917                 spin_unlock_irqrestore(&priv->lock, flags);
2918
2919         return err;
2920
2921 }
2922
2923
2924
2925
2926 /***************************************************************
2927  *      tlan_mii_send_data
2928  *
2929  *      Returns:
2930  *              Nothing
2931  *      Parms:
2932  *              base_port       The base IO port of the adapter in
2933  *                              question.
2934  *              dev             The address of the PHY to be queried.
2935  *              data            The value to be placed on the MII bus.
2936  *              num_bits        The number of bits in data that are to
2937  *                              be placed on the MII bus.
2938  *
2939  *      This function sends on sequence of bits on the MII
2940  *      configuration bus.
2941  *
2942  **************************************************************/
2943
2944 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2945 {
2946         u16 sio;
2947         u32 i;
2948
2949         if (num_bits == 0)
2950                 return;
2951
2952         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2953         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2954         tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2955
2956         for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2957                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2958                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2959                 if (data & i)
2960                         tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2961                 else
2962                         tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2963                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2964                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2965         }
2966
2967 }
2968
2969
2970
2971
2972 /***************************************************************
2973  *      TLan_MiiSync
2974  *
2975  *      Returns:
2976  *              Nothing
2977  *      Parms:
2978  *              base_port       The base IO port of the adapter in
2979  *                              question.
2980  *
2981  *      This functions syncs all PHYs in terms of the MII configuration
2982  *      bus.
2983  *
2984  **************************************************************/
2985
2986 static void tlan_mii_sync(u16 base_port)
2987 {
2988         int i;
2989         u16 sio;
2990
2991         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2992         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2993
2994         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2995         for (i = 0; i < 32; i++) {
2996                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2997                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2998         }
2999
3000 }
3001
3002
3003
3004
3005 /***************************************************************
3006  *      tlan_mii_write_reg
3007  *
3008  *      Returns:
3009  *              Nothing
3010  *      Parms:
3011  *              dev             The device structure for the device
3012  *                              to write to.
3013  *              phy             The address of the PHY to be written to.
3014  *              reg             The register whose contents are to be
3015  *                              written.
3016  *              val             The value to be written to the register.
3017  *
3018  *      This function uses the TLAN's MII bus to write the contents of a
3019  *      given register on a PHY.  It sends the appropriate info and then
3020  *      writes the 16-bit register value from the MII configuration bus
3021  *      via the TLAN SIO register.
3022  *
3023  **************************************************************/
3024
3025 static void
3026 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3027 {
3028         u16     sio;
3029         int     minten;
3030         unsigned long flags = 0;
3031         struct tlan_priv *priv = netdev_priv(dev);
3032
3033         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3034         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3035
3036         if (!in_irq())
3037                 spin_lock_irqsave(&priv->lock, flags);
3038
3039         tlan_mii_sync(dev->base_addr);
3040
3041         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3042         if (minten)
3043                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3044
3045         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
3046         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* write (01b) */
3047         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
3048         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
3049
3050         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* send ACK */
3051         tlan_mii_send_data(dev->base_addr, val, 16);    /* send data */
3052
3053         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3054         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3055
3056         if (minten)
3057                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3058
3059         if (!in_irq())
3060                 spin_unlock_irqrestore(&priv->lock, flags);
3061
3062 }
3063
3064
3065
3066
3067 /*****************************************************************************
3068 ******************************************************************************
3069
3070 ThunderLAN driver eeprom routines
3071
3072 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3073 EEPROM.  these functions are based on information in microchip's
3074 data sheet.  I don't know how well this functions will work with
3075 other Eeproms.
3076
3077 ******************************************************************************
3078 *****************************************************************************/
3079
3080
3081 /***************************************************************
3082  *      tlan_ee_send_start
3083  *
3084  *      Returns:
3085  *              Nothing
3086  *      Parms:
3087  *              io_base         The IO port base address for the
3088  *                              TLAN device with the EEPROM to
3089  *                              use.
3090  *
3091  *      This function sends a start cycle to an EEPROM attached
3092  *      to a TLAN chip.
3093  *
3094  **************************************************************/
3095
3096 static void tlan_ee_send_start(u16 io_base)
3097 {
3098         u16     sio;
3099
3100         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3101         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3102
3103         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3104         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3105         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3106         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3107         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3108
3109 }
3110
3111
3112
3113
3114 /***************************************************************
3115  *      tlan_ee_send_byte
3116  *
3117  *      Returns:
3118  *              If the correct ack was received, 0, otherwise 1
3119  *      Parms:  io_base         The IO port base address for the
3120  *                              TLAN device with the EEPROM to
3121  *                              use.
3122  *              data            The 8 bits of information to
3123  *                              send to the EEPROM.
3124  *              stop            If TLAN_EEPROM_STOP is passed, a
3125  *                              stop cycle is sent after the
3126  *                              byte is sent after the ack is
3127  *                              read.
3128  *
3129  *      This function sends a byte on the serial EEPROM line,
3130  *      driving the clock to send each bit. The function then
3131  *      reverses transmission direction and reads an acknowledge
3132  *      bit.
3133  *
3134  **************************************************************/
3135
3136 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3137 {
3138         int     err;
3139         u8      place;
3140         u16     sio;
3141
3142         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3143         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3144
3145         /* Assume clock is low, tx is enabled; */
3146         for (place = 0x80; place != 0; place >>= 1) {
3147                 if (place & data)
3148                         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3149                 else
3150                         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3151                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3152                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3153         }
3154         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3155         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3156         err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3157         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3158         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3159
3160         if ((!err) && stop) {
3161                 /* STOP, raise data while clock is high */
3162                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3163                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3164                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3165         }
3166
3167         return err;
3168
3169 }
3170
3171
3172
3173
3174 /***************************************************************
3175  *      tlan_ee_receive_byte
3176  *
3177  *      Returns:
3178  *              Nothing
3179  *      Parms:
3180  *              io_base         The IO port base address for the
3181  *                              TLAN device with the EEPROM to
3182  *                              use.
3183  *              data            An address to a char to hold the
3184  *                              data sent from the EEPROM.
3185  *              stop            If TLAN_EEPROM_STOP is passed, a
3186  *                              stop cycle is sent after the
3187  *                              byte is received, and no ack is
3188  *                              sent.
3189  *
3190  *      This function receives 8 bits of data from the EEPROM
3191  *      over the serial link.  It then sends and ack bit, or no
3192  *      ack and a stop bit.  This function is used to retrieve
3193  *      data after the address of a byte in the EEPROM has been
3194  *      sent.
3195  *
3196  **************************************************************/
3197
3198 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3199 {
3200         u8  place;
3201         u16 sio;
3202
3203         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3204         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3205         *data = 0;
3206
3207         /* Assume clock is low, tx is enabled; */
3208         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3209         for (place = 0x80; place; place >>= 1) {
3210                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3211                 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3212                         *data |= place;
3213                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3214         }
3215
3216         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3217         if (!stop) {
3218                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3219                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3220                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3221         } else {
3222                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);  /* no ack = 1 (?) */
3223                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3224                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3225                 /* STOP, raise data while clock is high */
3226                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3227                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3228                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3229         }
3230
3231 }
3232
3233
3234
3235
3236 /***************************************************************
3237  *      tlan_ee_read_byte
3238  *
3239  *      Returns:
3240  *              No error = 0, else, the stage at which the error
3241  *              occurred.
3242  *      Parms:
3243  *              io_base         The IO port base address for the
3244  *                              TLAN device with the EEPROM to
3245  *                              use.
3246  *              ee_addr         The address of the byte in the
3247  *                              EEPROM whose contents are to be
3248  *                              retrieved.
3249  *              data            An address to a char to hold the
3250  *                              data obtained from the EEPROM.
3251  *
3252  *      This function reads a byte of information from an byte
3253  *      cell in the EEPROM.
3254  *
3255  **************************************************************/
3256
3257 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3258 {
3259         int err;
3260         struct tlan_priv *priv = netdev_priv(dev);
3261         unsigned long flags = 0;
3262         int ret = 0;
3263
3264         spin_lock_irqsave(&priv->lock, flags);
3265
3266         tlan_ee_send_start(dev->base_addr);
3267         err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3268         if (err) {
3269                 ret = 1;
3270                 goto fail;
3271         }
3272         err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3273         if (err) {
3274                 ret = 2;
3275                 goto fail;
3276         }
3277         tlan_ee_send_start(dev->base_addr);
3278         err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3279         if (err) {
3280                 ret = 3;
3281                 goto fail;
3282         }
3283         tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3284 fail:
3285         spin_unlock_irqrestore(&priv->lock, flags);
3286
3287         return ret;
3288
3289 }
3290
3291
3292