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