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