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