drivers/net/ethernet/ti/tlan.c

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