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