smsc95xx: Add module params to read MAC address
[linux-2.6.git] / drivers / net / tlan.c
1 /*******************************************************************************
2  *
3  *  Linux ThunderLAN Driver
4  *
5  *  tlan.c
6  *  by James Banks
7  *
8  *  (C) 1997-1998 Caldera, Inc.
9  *  (C) 1998 James Banks
10  *  (C) 1999-2001 Torben Mathiasen
11  *  (C) 2002 Samuel Chessman
12  *
13  *  This software may be used and distributed according to the terms
14  *  of the GNU General Public License, incorporated herein by reference.
15  *
16  ** Useful (if not required) reading:
17  *
18  *              Texas Instruments, ThunderLAN Programmer's Guide,
19  *                      TI Literature Number SPWU013A
20  *                      available in PDF format from www.ti.com
21  *              Level One, LXT901 and LXT970 Data Sheets
22  *                      available in PDF format from www.level1.com
23  *              National Semiconductor, DP83840A Data Sheet
24  *                      available in PDF format from www.national.com
25  *              Microchip Technology, 24C01A/02A/04A Data Sheet
26  *                      available in PDF format from www.microchip.com
27  *
28  ******************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
46
47 #include "tlan.h"
48
49
50 /* For removing EISA devices */
51 static  struct net_device       *tlan_eisa_devices;
52
53 static  int             tlan_devices_installed;
54
55 /* Set speed, duplex and aui settings */
56 static  int aui[MAX_TLAN_BOARDS];
57 static  int duplex[MAX_TLAN_BOARDS];
58 static  int speed[MAX_TLAN_BOARDS];
59 static  int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65                  "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
71
72
73 /* Define this to enable Link beat monitoring */
74 #undef MONITOR
75
76 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
77 static  int             debug;
78 module_param(debug, int, 0);
79 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
80
81 static  const char tlan_signature[] = "TLAN";
82 static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
83 static  int tlan_have_pci;
84 static  int tlan_have_eisa;
85
86 static const char * const media[] = {
87         "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
88         "100BaseTx-FD", "100BaseT4", NULL
89 };
90
91 static struct board {
92         const char      *device_label;
93         u32             flags;
94         u16             addr_ofs;
95 } board_info[] = {
96         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97         { "Compaq Netelligent 10/100 TX PCI UTP",
98           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
99         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
100         { "Compaq NetFlex-3/P",
101           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
102         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
103         { "Compaq Netelligent Integrated 10/100 TX UTP",
104           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
105         { "Compaq Netelligent Dual 10/100 TX PCI UTP",
106           TLAN_ADAPTER_NONE, 0x83 },
107         { "Compaq Netelligent 10/100 TX Embedded UTP",
108           TLAN_ADAPTER_NONE, 0x83 },
109         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
110         { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
111         { "Olicom OC-2326", 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 DEFINE_PCI_DEVICE_TABLE(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);
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(unsigned long);
178
179 static void     tlan_reset_lists(struct net_device *);
180 static void     tlan_free_lists(struct net_device *);
181 static void     tlan_print_dio(u16);
182 static void     tlan_print_list(struct tlan_list *, char *, int);
183 static void     tlan_read_and_clear_stats(struct net_device *, int);
184 static void     tlan_reset_adapter(struct net_device *);
185 static void     tlan_finish_reset(struct net_device *);
186 static void     tlan_set_mac(struct net_device *, int areg, char *mac);
187
188 static void     tlan_phy_print(struct net_device *);
189 static void     tlan_phy_detect(struct net_device *);
190 static void     tlan_phy_power_down(struct net_device *);
191 static void     tlan_phy_power_up(struct net_device *);
192 static void     tlan_phy_reset(struct net_device *);
193 static void     tlan_phy_start_link(struct net_device *);
194 static void     tlan_phy_finish_auto_neg(struct net_device *);
195 #ifdef MONITOR
196 static void     tlan_phy_monitor(struct net_device *);
197 #endif
198
199 /*
200   static int    tlan_phy_nop(struct net_device *);
201   static int    tlan_phy_internal_check(struct net_device *);
202   static int    tlan_phy_internal_service(struct net_device *);
203   static int    tlan_phy_dp83840a_check(struct net_device *);
204 */
205
206 static bool     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
211 static void     tlan_ee_send_start(u16);
212 static int      tlan_ee_send_byte(u16, u8, int);
213 static void     tlan_ee_receive_byte(u16, u8 *, int);
214 static int      tlan_ee_read_byte(struct net_device *, u8, u8 *);
215
216
217 static inline void
218 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
219 {
220         unsigned long addr = (unsigned long)skb;
221         tag->buffer[9].address = addr;
222         tag->buffer[8].address = upper_32_bits(addr);
223 }
224
225 static inline struct sk_buff *
226 tlan_get_skb(const struct tlan_list *tag)
227 {
228         unsigned long addr;
229
230         addr = tag->buffer[9].address;
231         addr |= (tag->buffer[8].address << 16) << 16;
232         return (struct sk_buff *) addr;
233 }
234
235 static u32
236 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
237         NULL,
238         tlan_handle_tx_eof,
239         tlan_handle_stat_overflow,
240         tlan_handle_rx_eof,
241         tlan_handle_dummy,
242         tlan_handle_tx_eoc,
243         tlan_handle_status_check,
244         tlan_handle_rx_eoc
245 };
246
247 static inline void
248 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
249 {
250         struct tlan_priv *priv = netdev_priv(dev);
251         unsigned long flags = 0;
252
253         if (!in_irq())
254                 spin_lock_irqsave(&priv->lock, flags);
255         if (priv->timer.function != NULL &&
256             priv->timer_type != TLAN_TIMER_ACTIVITY) {
257                 if (!in_irq())
258                         spin_unlock_irqrestore(&priv->lock, flags);
259                 return;
260         }
261         priv->timer.function = tlan_timer;
262         if (!in_irq())
263                 spin_unlock_irqrestore(&priv->lock, flags);
264
265         priv->timer.data = (unsigned long) dev;
266         priv->timer_set_at = jiffies;
267         priv->timer_type = type;
268         mod_timer(&priv->timer, jiffies + ticks);
269
270 }
271
272
273 /*****************************************************************************
274 ******************************************************************************
275
276 ThunderLAN driver primary functions
277
278 these functions are more or less common to all linux network drivers.
279
280 ******************************************************************************
281 *****************************************************************************/
282
283
284
285
286
287 /***************************************************************
288  *      tlan_remove_one
289  *
290  *      Returns:
291  *              Nothing
292  *      Parms:
293  *              None
294  *
295  *      Goes through the TLanDevices list and frees the device
296  *      structs and memory associated with each device (lists
297  *      and buffers).  It also ureserves the IO port regions
298  *      associated with this device.
299  *
300  **************************************************************/
301
302
303 static void __devexit tlan_remove_one(struct pci_dev *pdev)
304 {
305         struct net_device *dev = pci_get_drvdata(pdev);
306         struct tlan_priv        *priv = netdev_priv(dev);
307
308         unregister_netdev(dev);
309
310         if (priv->dma_storage) {
311                 pci_free_consistent(priv->pci_dev,
312                                     priv->dma_size, priv->dma_storage,
313                                     priv->dma_storage_dma);
314         }
315
316 #ifdef CONFIG_PCI
317         pci_release_regions(pdev);
318 #endif
319
320         free_netdev(dev);
321
322         pci_set_drvdata(pdev, NULL);
323 }
324
325 static void tlan_start(struct net_device *dev)
326 {
327         tlan_reset_lists(dev);
328         /* NOTE: It might not be necessary to read the stats before a
329            reset if you don't care what the values are.
330         */
331         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
332         tlan_reset_adapter(dev);
333         netif_wake_queue(dev);
334 }
335
336 static void tlan_stop(struct net_device *dev)
337 {
338         struct tlan_priv *priv = netdev_priv(dev);
339
340         tlan_read_and_clear_stats(dev, TLAN_RECORD);
341         outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
342         /* Reset and power down phy */
343         tlan_reset_adapter(dev);
344         if (priv->timer.function != NULL) {
345                 del_timer_sync(&priv->timer);
346                 priv->timer.function = NULL;
347         }
348 }
349
350 #ifdef CONFIG_PM
351
352 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
353 {
354         struct net_device *dev = pci_get_drvdata(pdev);
355
356         if (netif_running(dev))
357                 tlan_stop(dev);
358
359         netif_device_detach(dev);
360         pci_save_state(pdev);
361         pci_disable_device(pdev);
362         pci_wake_from_d3(pdev, false);
363         pci_set_power_state(pdev, PCI_D3hot);
364
365         return 0;
366 }
367
368 static int tlan_resume(struct pci_dev *pdev)
369 {
370         struct net_device *dev = pci_get_drvdata(pdev);
371
372         pci_set_power_state(pdev, PCI_D0);
373         pci_restore_state(pdev);
374         pci_enable_wake(pdev, 0, 0);
375         netif_device_attach(dev);
376
377         if (netif_running(dev))
378                 tlan_start(dev);
379
380         return 0;
381 }
382
383 #else /* CONFIG_PM */
384
385 #define tlan_suspend   NULL
386 #define tlan_resume    NULL
387
388 #endif /* CONFIG_PM */
389
390
391 static struct pci_driver tlan_driver = {
392         .name           = "tlan",
393         .id_table       = tlan_pci_tbl,
394         .probe          = tlan_init_one,
395         .remove         = __devexit_p(tlan_remove_one),
396         .suspend        = tlan_suspend,
397         .resume         = tlan_resume,
398 };
399
400 static int __init tlan_probe(void)
401 {
402         int rc = -ENODEV;
403
404         pr_info("%s", tlan_banner);
405
406         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
407
408         /* Use new style PCI probing. Now the kernel will
409            do most of this for us */
410         rc = pci_register_driver(&tlan_driver);
411
412         if (rc != 0) {
413                 pr_err("Could not register pci driver\n");
414                 goto err_out_pci_free;
415         }
416
417         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
418         tlan_eisa_probe();
419
420         pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
421                 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
422                 tlan_have_pci, tlan_have_eisa);
423
424         if (tlan_devices_installed == 0) {
425                 rc = -ENODEV;
426                 goto  err_out_pci_unreg;
427         }
428         return 0;
429
430 err_out_pci_unreg:
431         pci_unregister_driver(&tlan_driver);
432 err_out_pci_free:
433         return rc;
434 }
435
436
437 static int __devinit tlan_init_one(struct pci_dev *pdev,
438                                    const struct pci_device_id *ent)
439 {
440         return tlan_probe1(pdev, -1, -1, 0, ent);
441 }
442
443
444 /*
445 ***************************************************************
446 *       tlan_probe1
447 *
448 *       Returns:
449 *               0 on success, error code on error
450 *       Parms:
451 *               none
452 *
453 *       The name is lower case to fit in with all the rest of
454 *       the netcard_probe names.  This function looks for
455 *       another TLan based adapter, setting it up with the
456 *       allocated device struct if one is found.
457 *       tlan_probe has been ported to the new net API and
458 *       now allocates its own device structure. This function
459 *       is also used by modules.
460 *
461 **************************************************************/
462
463 static int __devinit tlan_probe1(struct pci_dev *pdev,
464                                  long ioaddr, int irq, int rev,
465                                  const struct pci_device_id *ent)
466 {
467
468         struct net_device  *dev;
469         struct tlan_priv  *priv;
470         u16                device_id;
471         int                reg, rc = -ENODEV;
472
473 #ifdef CONFIG_PCI
474         if (pdev) {
475                 rc = pci_enable_device(pdev);
476                 if (rc)
477                         return rc;
478
479                 rc = pci_request_regions(pdev, tlan_signature);
480                 if (rc) {
481                         pr_err("Could not reserve IO regions\n");
482                         goto err_out;
483                 }
484         }
485 #endif  /*  CONFIG_PCI  */
486
487         dev = alloc_etherdev(sizeof(struct tlan_priv));
488         if (dev == NULL) {
489                 pr_err("Could not allocate memory for device\n");
490                 rc = -ENOMEM;
491                 goto err_out_regions;
492         }
493         SET_NETDEV_DEV(dev, &pdev->dev);
494
495         priv = netdev_priv(dev);
496
497         priv->pci_dev = pdev;
498         priv->dev = dev;
499
500         /* Is this a PCI device? */
501         if (pdev) {
502                 u32                pci_io_base = 0;
503
504                 priv->adapter = &board_info[ent->driver_data];
505
506                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
507                 if (rc) {
508                         pr_err("No suitable PCI mapping available\n");
509                         goto err_out_free_dev;
510                 }
511
512                 for (reg = 0; reg <= 5; reg++) {
513                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
514                                 pci_io_base = pci_resource_start(pdev, reg);
515                                 TLAN_DBG(TLAN_DEBUG_GNRL,
516                                          "IO mapping is available at %x.\n",
517                                          pci_io_base);
518                                 break;
519                         }
520                 }
521                 if (!pci_io_base) {
522                         pr_err("No IO mappings available\n");
523                         rc = -EIO;
524                         goto err_out_free_dev;
525                 }
526
527                 dev->base_addr = pci_io_base;
528                 dev->irq = pdev->irq;
529                 priv->adapter_rev = pdev->revision;
530                 pci_set_master(pdev);
531                 pci_set_drvdata(pdev, dev);
532
533         } else  {     /* EISA card */
534                 /* This is a hack. We need to know which board structure
535                  * is suited for this adapter */
536                 device_id = inw(ioaddr + EISA_ID2);
537                 priv->is_eisa = 1;
538                 if (device_id == 0x20F1) {
539                         priv->adapter = &board_info[13]; /* NetFlex-3/E */
540                         priv->adapter_rev = 23;         /* TLAN 2.3 */
541                 } else {
542                         priv->adapter = &board_info[14];
543                         priv->adapter_rev = 10;         /* TLAN 1.0 */
544                 }
545                 dev->base_addr = ioaddr;
546                 dev->irq = irq;
547         }
548
549         /* Kernel parameters */
550         if (dev->mem_start) {
551                 priv->aui    = dev->mem_start & 0x01;
552                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
553                         : (dev->mem_start & 0x06) >> 1;
554                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
555                         : (dev->mem_start & 0x18) >> 3;
556
557                 if (priv->speed == 0x1)
558                         priv->speed = TLAN_SPEED_10;
559                 else if (priv->speed == 0x2)
560                         priv->speed = TLAN_SPEED_100;
561
562                 debug = priv->debug = dev->mem_end;
563         } else {
564                 priv->aui    = aui[boards_found];
565                 priv->speed  = speed[boards_found];
566                 priv->duplex = duplex[boards_found];
567                 priv->debug = debug;
568         }
569
570         /* This will be used when we get an adapter error from
571          * within our irq handler */
572         INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
573
574         spin_lock_init(&priv->lock);
575
576         rc = tlan_init(dev);
577         if (rc) {
578                 pr_err("Could not set up device\n");
579                 goto err_out_free_dev;
580         }
581
582         rc = register_netdev(dev);
583         if (rc) {
584                 pr_err("Could not register device\n");
585                 goto err_out_uninit;
586         }
587
588
589         tlan_devices_installed++;
590         boards_found++;
591
592         /* pdev is NULL if this is an EISA device */
593         if (pdev)
594                 tlan_have_pci++;
595         else {
596                 priv->next_device = tlan_eisa_devices;
597                 tlan_eisa_devices = dev;
598                 tlan_have_eisa++;
599         }
600
601         netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
602                     (int)dev->irq,
603                     (int)dev->base_addr,
604                     priv->adapter->device_label,
605                     priv->adapter_rev);
606         return 0;
607
608 err_out_uninit:
609         pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
610                             priv->dma_storage_dma);
611 err_out_free_dev:
612         free_netdev(dev);
613 err_out_regions:
614 #ifdef CONFIG_PCI
615         if (pdev)
616                 pci_release_regions(pdev);
617 #endif
618 err_out:
619         if (pdev)
620                 pci_disable_device(pdev);
621         return rc;
622 }
623
624
625 static void tlan_eisa_cleanup(void)
626 {
627         struct net_device *dev;
628         struct tlan_priv *priv;
629
630         while (tlan_have_eisa) {
631                 dev = tlan_eisa_devices;
632                 priv = netdev_priv(dev);
633                 if (priv->dma_storage) {
634                         pci_free_consistent(priv->pci_dev, priv->dma_size,
635                                             priv->dma_storage,
636                                             priv->dma_storage_dma);
637                 }
638                 release_region(dev->base_addr, 0x10);
639                 unregister_netdev(dev);
640                 tlan_eisa_devices = priv->next_device;
641                 free_netdev(dev);
642                 tlan_have_eisa--;
643         }
644 }
645
646
647 static void __exit tlan_exit(void)
648 {
649         pci_unregister_driver(&tlan_driver);
650
651         if (tlan_have_eisa)
652                 tlan_eisa_cleanup();
653
654 }
655
656
657 /* Module loading/unloading */
658 module_init(tlan_probe);
659 module_exit(tlan_exit);
660
661
662
663 /**************************************************************
664  *      tlan_eisa_probe
665  *
666  *      Returns: 0 on success, 1 otherwise
667  *
668  *      Parms:   None
669  *
670  *
671  *      This functions probes for EISA devices and calls
672  *      TLan_probe1 when one is found.
673  *
674  *************************************************************/
675
676 static void  __init tlan_eisa_probe(void)
677 {
678         long    ioaddr;
679         int     rc = -ENODEV;
680         int     irq;
681         u16     device_id;
682
683         if (!EISA_bus) {
684                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
685                 return;
686         }
687
688         /* Loop through all slots of the EISA bus */
689         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
690
691                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
692                          (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
693                 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
694                          (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
695
696
697                 TLAN_DBG(TLAN_DEBUG_PROBE,
698                          "Probing for EISA adapter at IO: 0x%4x : ",
699                          (int) ioaddr);
700                 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
701                         goto out;
702
703                 if (inw(ioaddr + EISA_ID) != 0x110E) {
704                         release_region(ioaddr, 0x10);
705                         goto out;
706                 }
707
708                 device_id = inw(ioaddr + EISA_ID2);
709                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
710                         release_region(ioaddr, 0x10);
711                         goto out;
712                 }
713
714                 /* check if adapter is enabled */
715                 if (inb(ioaddr + EISA_CR) != 0x1) {
716                         release_region(ioaddr, 0x10);
717                         goto out2;
718                 }
719
720                 if (debug == 0x10)
721                         pr_info("Found one\n");
722
723
724                 /* Get irq from board */
725                 switch (inb(ioaddr + 0xcc0)) {
726                 case(0x10):
727                         irq = 5;
728                         break;
729                 case(0x20):
730                         irq = 9;
731                         break;
732                 case(0x40):
733                         irq = 10;
734                         break;
735                 case(0x80):
736                         irq = 11;
737                         break;
738                 default:
739                         goto out;
740                 }
741
742
743                 /* Setup the newly found eisa adapter */
744                 rc = tlan_probe1(NULL, ioaddr, irq,
745                                  12, NULL);
746                 continue;
747
748 out:
749                 if (debug == 0x10)
750                         pr_info("None found\n");
751                 continue;
752
753 out2:
754                 if (debug == 0x10)
755                         pr_info("Card found but it is not enabled, skipping\n");
756                 continue;
757
758         }
759
760 }
761
762 #ifdef CONFIG_NET_POLL_CONTROLLER
763 static void tlan_poll(struct net_device *dev)
764 {
765         disable_irq(dev->irq);
766         tlan_handle_interrupt(dev->irq, dev);
767         enable_irq(dev->irq);
768 }
769 #endif
770
771 static const struct net_device_ops tlan_netdev_ops = {
772         .ndo_open               = tlan_open,
773         .ndo_stop               = tlan_close,
774         .ndo_start_xmit         = tlan_start_tx,
775         .ndo_tx_timeout         = tlan_tx_timeout,
776         .ndo_get_stats          = tlan_get_stats,
777         .ndo_set_multicast_list = tlan_set_multicast_list,
778         .ndo_do_ioctl           = tlan_ioctl,
779         .ndo_change_mtu         = eth_change_mtu,
780         .ndo_set_mac_address    = eth_mac_addr,
781         .ndo_validate_addr      = eth_validate_addr,
782 #ifdef CONFIG_NET_POLL_CONTROLLER
783         .ndo_poll_controller     = tlan_poll,
784 #endif
785 };
786
787
788
789 /***************************************************************
790  *      tlan_init
791  *
792  *      Returns:
793  *              0 on success, error code otherwise.
794  *      Parms:
795  *              dev     The structure of the device to be
796  *                      init'ed.
797  *
798  *      This function completes the initialization of the
799  *      device structure and driver.  It reserves the IO
800  *      addresses, allocates memory for the lists and bounce
801  *      buffers, retrieves the MAC address from the eeprom
802  *      and assignes the device's methods.
803  *
804  **************************************************************/
805
806 static int tlan_init(struct net_device *dev)
807 {
808         int             dma_size;
809         int             err;
810         int             i;
811         struct tlan_priv        *priv;
812
813         priv = netdev_priv(dev);
814
815         dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
816                 * (sizeof(struct tlan_list));
817         priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
818                                                  dma_size,
819                                                  &priv->dma_storage_dma);
820         priv->dma_size = dma_size;
821
822         if (priv->dma_storage == NULL) {
823                 pr_err("Could not allocate lists and buffers for %s\n",
824                        dev->name);
825                 return -ENOMEM;
826         }
827         memset(priv->dma_storage, 0, dma_size);
828         priv->rx_list = (struct tlan_list *)
829                 ALIGN((unsigned long)priv->dma_storage, 8);
830         priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
831         priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
832         priv->tx_list_dma =
833                 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
834
835         err = 0;
836         for (i = 0;  i < 6 ; i++)
837                 err |= tlan_ee_read_byte(dev,
838                                          (u8) priv->adapter->addr_ofs + i,
839                                          (u8 *) &dev->dev_addr[i]);
840         if (err) {
841                 pr_err("%s: Error reading MAC from eeprom: %d\n",
842                        dev->name, err);
843         }
844         dev->addr_len = 6;
845
846         netif_carrier_off(dev);
847
848         /* Device methods */
849         dev->netdev_ops = &tlan_netdev_ops;
850         dev->watchdog_timeo = TX_TIMEOUT;
851
852         return 0;
853
854 }
855
856
857
858
859 /***************************************************************
860  *      tlan_open
861  *
862  *      Returns:
863  *              0 on success, error code otherwise.
864  *      Parms:
865  *              dev     Structure of device to be opened.
866  *
867  *      This routine puts the driver and TLAN adapter in a
868  *      state where it is ready to send and receive packets.
869  *      It allocates the IRQ, resets and brings the adapter
870  *      out of reset, and allows interrupts.  It also delays
871  *      the startup for autonegotiation or sends a Rx GO
872  *      command to the adapter, as appropriate.
873  *
874  **************************************************************/
875
876 static int tlan_open(struct net_device *dev)
877 {
878         struct tlan_priv        *priv = netdev_priv(dev);
879         int             err;
880
881         priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
882         err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
883                           dev->name, dev);
884
885         if (err) {
886                 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
887                            dev->irq);
888                 return err;
889         }
890
891         init_timer(&priv->timer);
892
893         tlan_start(dev);
894
895         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
896                  dev->name, priv->tlan_rev);
897
898         return 0;
899
900 }
901
902
903
904 /**************************************************************
905  *      tlan_ioctl
906  *
907  *      Returns:
908  *              0 on success, error code otherwise
909  *      Params:
910  *              dev     structure of device to receive ioctl.
911  *
912  *              rq      ifreq structure to hold userspace data.
913  *
914  *              cmd     ioctl command.
915  *
916  *
917  *************************************************************/
918
919 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
920 {
921         struct tlan_priv *priv = netdev_priv(dev);
922         struct mii_ioctl_data *data = if_mii(rq);
923         u32 phy   = priv->phy[priv->phy_num];
924
925         if (!priv->phy_online)
926                 return -EAGAIN;
927
928         switch (cmd) {
929         case SIOCGMIIPHY:               /* get address of MII PHY in use. */
930                 data->phy_id = phy;
931
932
933         case SIOCGMIIREG:               /* read MII PHY register. */
934                 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
935                                   data->reg_num & 0x1f, &data->val_out);
936                 return 0;
937
938
939         case SIOCSMIIREG:               /* write MII PHY register. */
940                 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
941                                    data->reg_num & 0x1f, data->val_in);
942                 return 0;
943         default:
944                 return -EOPNOTSUPP;
945         }
946 }
947
948
949 /***************************************************************
950  *      tlan_tx_timeout
951  *
952  *      Returns: nothing
953  *
954  *      Params:
955  *              dev     structure of device which timed out
956  *                      during transmit.
957  *
958  **************************************************************/
959
960 static void tlan_tx_timeout(struct net_device *dev)
961 {
962
963         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
964
965         /* Ok so we timed out, lets see what we can do about it...*/
966         tlan_free_lists(dev);
967         tlan_reset_lists(dev);
968         tlan_read_and_clear_stats(dev, TLAN_IGNORE);
969         tlan_reset_adapter(dev);
970         dev->trans_start = jiffies; /* prevent tx timeout */
971         netif_wake_queue(dev);
972
973 }
974
975
976 /***************************************************************
977  *      tlan_tx_timeout_work
978  *
979  *      Returns: nothing
980  *
981  *      Params:
982  *              work    work item of device which timed out
983  *
984  **************************************************************/
985
986 static void tlan_tx_timeout_work(struct work_struct *work)
987 {
988         struct tlan_priv        *priv =
989                 container_of(work, struct tlan_priv, tlan_tqueue);
990
991         tlan_tx_timeout(priv->dev);
992 }
993
994
995
996 /***************************************************************
997  *      tlan_start_tx
998  *
999  *      Returns:
1000  *              0 on success, non-zero on failure.
1001  *      Parms:
1002  *              skb     A pointer to the sk_buff containing the
1003  *                      frame to be sent.
1004  *              dev     The device to send the data on.
1005  *
1006  *      This function adds a frame to the Tx list to be sent
1007  *      ASAP.  First it verifies that the adapter is ready and
1008  *      there is room in the queue.  Then it sets up the next
1009  *      available list, copies the frame to the corresponding
1010  *      buffer.  If the adapter Tx channel is idle, it gives
1011  *      the adapter a Tx Go command on the list, otherwise it
1012  *      sets the forward address of the previous list to point
1013  *      to this one.  Then it frees the sk_buff.
1014  *
1015  **************************************************************/
1016
1017 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1018 {
1019         struct tlan_priv *priv = netdev_priv(dev);
1020         dma_addr_t      tail_list_phys;
1021         struct tlan_list        *tail_list;
1022         unsigned long   flags;
1023         unsigned int    txlen;
1024
1025         if (!priv->phy_online) {
1026                 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1027                          dev->name);
1028                 dev_kfree_skb_any(skb);
1029                 return NETDEV_TX_OK;
1030         }
1031
1032         if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1033                 return NETDEV_TX_OK;
1034         txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1035
1036         tail_list = priv->tx_list + priv->tx_tail;
1037         tail_list_phys =
1038                 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1039
1040         if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1041                 TLAN_DBG(TLAN_DEBUG_TX,
1042                          "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1043                          dev->name, priv->tx_head, priv->tx_tail);
1044                 netif_stop_queue(dev);
1045                 priv->tx_busy_count++;
1046                 return NETDEV_TX_BUSY;
1047         }
1048
1049         tail_list->forward = 0;
1050
1051         tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1052                                                       skb->data, txlen,
1053                                                       PCI_DMA_TODEVICE);
1054         tlan_store_skb(tail_list, skb);
1055
1056         tail_list->frame_size = (u16) txlen;
1057         tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1058         tail_list->buffer[1].count = 0;
1059         tail_list->buffer[1].address = 0;
1060
1061         spin_lock_irqsave(&priv->lock, flags);
1062         tail_list->c_stat = TLAN_CSTAT_READY;
1063         if (!priv->tx_in_progress) {
1064                 priv->tx_in_progress = 1;
1065                 TLAN_DBG(TLAN_DEBUG_TX,
1066                          "TRANSMIT:  Starting TX on buffer %d\n",
1067                          priv->tx_tail);
1068                 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1069                 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1070         } else {
1071                 TLAN_DBG(TLAN_DEBUG_TX,
1072                          "TRANSMIT:  Adding buffer %d to TX channel\n",
1073                          priv->tx_tail);
1074                 if (priv->tx_tail == 0) {
1075                         (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1076                                 = tail_list_phys;
1077                 } else {
1078                         (priv->tx_list + (priv->tx_tail - 1))->forward
1079                                 = tail_list_phys;
1080                 }
1081         }
1082         spin_unlock_irqrestore(&priv->lock, flags);
1083
1084         CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1085
1086         return NETDEV_TX_OK;
1087
1088 }
1089
1090
1091
1092
1093 /***************************************************************
1094  *      tlan_handle_interrupt
1095  *
1096  *      Returns:
1097  *              Nothing
1098  *      Parms:
1099  *              irq     The line on which the interrupt
1100  *                      occurred.
1101  *              dev_id  A pointer to the device assigned to
1102  *                      this irq line.
1103  *
1104  *      This function handles an interrupt generated by its
1105  *      assigned TLAN adapter.  The function deactivates
1106  *      interrupts on its adapter, records the type of
1107  *      interrupt, executes the appropriate subhandler, and
1108  *      acknowdges the interrupt to the adapter (thus
1109  *      re-enabling adapter interrupts.
1110  *
1111  **************************************************************/
1112
1113 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1114 {
1115         struct net_device       *dev = dev_id;
1116         struct tlan_priv *priv = netdev_priv(dev);
1117         u16             host_int;
1118         u16             type;
1119
1120         spin_lock(&priv->lock);
1121
1122         host_int = inw(dev->base_addr + TLAN_HOST_INT);
1123         type = (host_int & TLAN_HI_IT_MASK) >> 2;
1124         if (type) {
1125                 u32     ack;
1126                 u32     host_cmd;
1127
1128                 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1129                 ack = tlan_int_vector[type](dev, host_int);
1130
1131                 if (ack) {
1132                         host_cmd = TLAN_HC_ACK | ack | (type << 18);
1133                         outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1134                 }
1135         }
1136
1137         spin_unlock(&priv->lock);
1138
1139         return IRQ_RETVAL(type);
1140 }
1141
1142
1143
1144
1145 /***************************************************************
1146  *      tlan_close
1147  *
1148  *      Returns:
1149  *              An error code.
1150  *      Parms:
1151  *              dev     The device structure of the device to
1152  *                      close.
1153  *
1154  *      This function shuts down the adapter.  It records any
1155  *      stats, puts the adapter into reset state, deactivates
1156  *      its time as needed, and frees the irq it is using.
1157  *
1158  **************************************************************/
1159
1160 static int tlan_close(struct net_device *dev)
1161 {
1162         struct tlan_priv *priv = netdev_priv(dev);
1163
1164         priv->neg_be_verbose = 0;
1165         tlan_stop(dev);
1166
1167         free_irq(dev->irq, dev);
1168         tlan_free_lists(dev);
1169         TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1170
1171         return 0;
1172
1173 }
1174
1175
1176
1177
1178 /***************************************************************
1179  *      tlan_get_stats
1180  *
1181  *      Returns:
1182  *              A pointer to the device's statistics structure.
1183  *      Parms:
1184  *              dev     The device structure to return the
1185  *                      stats for.
1186  *
1187  *      This function updates the devices statistics by reading
1188  *      the TLAN chip's onboard registers.  Then it returns the
1189  *      address of the statistics structure.
1190  *
1191  **************************************************************/
1192
1193 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1194 {
1195         struct tlan_priv        *priv = netdev_priv(dev);
1196         int i;
1197
1198         /* Should only read stats if open ? */
1199         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1200
1201         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1202                  priv->rx_eoc_count);
1203         TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1204                  priv->tx_busy_count);
1205         if (debug & TLAN_DEBUG_GNRL) {
1206                 tlan_print_dio(dev->base_addr);
1207                 tlan_phy_print(dev);
1208         }
1209         if (debug & TLAN_DEBUG_LIST) {
1210                 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1211                         tlan_print_list(priv->rx_list + i, "RX", i);
1212                 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1213                         tlan_print_list(priv->tx_list + i, "TX", i);
1214         }
1215
1216         return &dev->stats;
1217
1218 }
1219
1220
1221
1222
1223 /***************************************************************
1224  *      tlan_set_multicast_list
1225  *
1226  *      Returns:
1227  *              Nothing
1228  *      Parms:
1229  *              dev     The device structure to set the
1230  *                      multicast list for.
1231  *
1232  *      This function sets the TLAN adaptor to various receive
1233  *      modes.  If the IFF_PROMISC flag is set, promiscuous
1234  *      mode is acitviated.  Otherwise, promiscuous mode is
1235  *      turned off.  If the IFF_ALLMULTI flag is set, then
1236  *      the hash table is set to receive all group addresses.
1237  *      Otherwise, the first three multicast addresses are
1238  *      stored in AREG_1-3, and the rest are selected via the
1239  *      hash table, as necessary.
1240  *
1241  **************************************************************/
1242
1243 static void tlan_set_multicast_list(struct net_device *dev)
1244 {
1245         struct netdev_hw_addr *ha;
1246         u32                     hash1 = 0;
1247         u32                     hash2 = 0;
1248         int                     i;
1249         u32                     offset;
1250         u8                      tmp;
1251
1252         if (dev->flags & IFF_PROMISC) {
1253                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1254                 tlan_dio_write8(dev->base_addr,
1255                                 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1256         } else {
1257                 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1258                 tlan_dio_write8(dev->base_addr,
1259                                 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1260                 if (dev->flags & IFF_ALLMULTI) {
1261                         for (i = 0; i < 3; i++)
1262                                 tlan_set_mac(dev, i + 1, NULL);
1263                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1264                                          0xffffffff);
1265                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1266                                          0xffffffff);
1267                 } else {
1268                         i = 0;
1269                         netdev_for_each_mc_addr(ha, dev) {
1270                                 if (i < 3) {
1271                                         tlan_set_mac(dev, i + 1,
1272                                                      (char *) &ha->addr);
1273                                 } else {
1274                                         offset =
1275                                                 tlan_hash_func((u8 *)&ha->addr);
1276                                         if (offset < 32)
1277                                                 hash1 |= (1 << offset);
1278                                         else
1279                                                 hash2 |= (1 << (offset - 32));
1280                                 }
1281                                 i++;
1282                         }
1283                         for ( ; i < 3; i++)
1284                                 tlan_set_mac(dev, i + 1, NULL);
1285                         tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1286                         tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1287                 }
1288         }
1289
1290 }
1291
1292
1293
1294 /*****************************************************************************
1295 ******************************************************************************
1296
1297 ThunderLAN driver interrupt vectors and table
1298
1299 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1300 Programmer's Guide" for more informations on handling interrupts
1301 generated by TLAN based adapters.
1302
1303 ******************************************************************************
1304 *****************************************************************************/
1305
1306
1307
1308
1309 /***************************************************************
1310  *      tlan_handle_tx_eof
1311  *
1312  *      Returns:
1313  *              1
1314  *      Parms:
1315  *              dev             Device assigned the IRQ that was
1316  *                              raised.
1317  *              host_int        The contents of the HOST_INT
1318  *                              port.
1319  *
1320  *      This function handles Tx EOF interrupts which are raised
1321  *      by the adapter when it has completed sending the
1322  *      contents of a buffer.  If detemines which list/buffer
1323  *      was completed and resets it.  If the buffer was the last
1324  *      in the channel (EOC), then the function checks to see if
1325  *      another buffer is ready to send, and if so, sends a Tx
1326  *      Go command.  Finally, the driver activates/continues the
1327  *      activity LED.
1328  *
1329  **************************************************************/
1330
1331 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1332 {
1333         struct tlan_priv        *priv = netdev_priv(dev);
1334         int             eoc = 0;
1335         struct tlan_list        *head_list;
1336         dma_addr_t      head_list_phys;
1337         u32             ack = 0;
1338         u16             tmp_c_stat;
1339
1340         TLAN_DBG(TLAN_DEBUG_TX,
1341                  "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1342                  priv->tx_head, priv->tx_tail);
1343         head_list = priv->tx_list + priv->tx_head;
1344
1345         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1346                && (ack < 255)) {
1347                 struct sk_buff *skb = tlan_get_skb(head_list);
1348
1349                 ack++;
1350                 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1351                                  max(skb->len,
1352                                      (unsigned int)TLAN_MIN_FRAME_SIZE),
1353                                  PCI_DMA_TODEVICE);
1354                 dev_kfree_skb_any(skb);
1355                 head_list->buffer[8].address = 0;
1356                 head_list->buffer[9].address = 0;
1357
1358                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1359                         eoc = 1;
1360
1361                 dev->stats.tx_bytes += head_list->frame_size;
1362
1363                 head_list->c_stat = TLAN_CSTAT_UNUSED;
1364                 netif_start_queue(dev);
1365                 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1366                 head_list = priv->tx_list + priv->tx_head;
1367         }
1368
1369         if (!ack)
1370                 netdev_info(dev,
1371                             "Received interrupt for uncompleted TX frame\n");
1372
1373         if (eoc) {
1374                 TLAN_DBG(TLAN_DEBUG_TX,
1375                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1376                          priv->tx_head, priv->tx_tail);
1377                 head_list = priv->tx_list + priv->tx_head;
1378                 head_list_phys = priv->tx_list_dma
1379                         + sizeof(struct tlan_list)*priv->tx_head;
1380                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1381                     == TLAN_CSTAT_READY) {
1382                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1383                         ack |= TLAN_HC_GO;
1384                 } else {
1385                         priv->tx_in_progress = 0;
1386                 }
1387         }
1388
1389         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1390                 tlan_dio_write8(dev->base_addr,
1391                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1392                 if (priv->timer.function == NULL) {
1393                         priv->timer.function = tlan_timer;
1394                         priv->timer.data = (unsigned long) dev;
1395                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1396                         priv->timer_set_at = jiffies;
1397                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1398                         add_timer(&priv->timer);
1399                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1400                         priv->timer_set_at = jiffies;
1401                 }
1402         }
1403
1404         return ack;
1405
1406 }
1407
1408
1409
1410
1411 /***************************************************************
1412  *      TLan_HandleStatOverflow
1413  *
1414  *      Returns:
1415  *              1
1416  *      Parms:
1417  *              dev             Device assigned the IRQ that was
1418  *                              raised.
1419  *              host_int        The contents of the HOST_INT
1420  *                              port.
1421  *
1422  *      This function handles the Statistics Overflow interrupt
1423  *      which means that one or more of the TLAN statistics
1424  *      registers has reached 1/2 capacity and needs to be read.
1425  *
1426  **************************************************************/
1427
1428 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1429 {
1430         tlan_read_and_clear_stats(dev, TLAN_RECORD);
1431
1432         return 1;
1433
1434 }
1435
1436
1437
1438
1439 /***************************************************************
1440  *      TLan_HandleRxEOF
1441  *
1442  *      Returns:
1443  *              1
1444  *      Parms:
1445  *              dev             Device assigned the IRQ that was
1446  *                              raised.
1447  *              host_int        The contents of the HOST_INT
1448  *                              port.
1449  *
1450  *      This function handles the Rx EOF interrupt which
1451  *      indicates a frame has been received by the adapter from
1452  *      the net and the frame has been transferred to memory.
1453  *      The function determines the bounce buffer the frame has
1454  *      been loaded into, creates a new sk_buff big enough to
1455  *      hold the frame, and sends it to protocol stack.  It
1456  *      then resets the used buffer and appends it to the end
1457  *      of the list.  If the frame was the last in the Rx
1458  *      channel (EOC), the function restarts the receive channel
1459  *      by sending an Rx Go command to the adapter.  Then it
1460  *      activates/continues the activity LED.
1461  *
1462  **************************************************************/
1463
1464 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1465 {
1466         struct tlan_priv        *priv = netdev_priv(dev);
1467         u32             ack = 0;
1468         int             eoc = 0;
1469         struct tlan_list        *head_list;
1470         struct sk_buff  *skb;
1471         struct tlan_list        *tail_list;
1472         u16             tmp_c_stat;
1473         dma_addr_t      head_list_phys;
1474
1475         TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1476                  priv->rx_head, priv->rx_tail);
1477         head_list = priv->rx_list + priv->rx_head;
1478         head_list_phys =
1479                 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1480
1481         while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1482                && (ack < 255)) {
1483                 dma_addr_t frame_dma = head_list->buffer[0].address;
1484                 u32 frame_size = head_list->frame_size;
1485                 struct sk_buff *new_skb;
1486
1487                 ack++;
1488                 if (tmp_c_stat & TLAN_CSTAT_EOC)
1489                         eoc = 1;
1490
1491                 new_skb = netdev_alloc_skb_ip_align(dev,
1492                                                     TLAN_MAX_FRAME_SIZE + 5);
1493                 if (!new_skb)
1494                         goto drop_and_reuse;
1495
1496                 skb = tlan_get_skb(head_list);
1497                 pci_unmap_single(priv->pci_dev, frame_dma,
1498                                  TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1499                 skb_put(skb, frame_size);
1500
1501                 dev->stats.rx_bytes += frame_size;
1502
1503                 skb->protocol = eth_type_trans(skb, dev);
1504                 netif_rx(skb);
1505
1506                 head_list->buffer[0].address =
1507                         pci_map_single(priv->pci_dev, new_skb->data,
1508                                        TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1509
1510                 tlan_store_skb(head_list, new_skb);
1511 drop_and_reuse:
1512                 head_list->forward = 0;
1513                 head_list->c_stat = 0;
1514                 tail_list = priv->rx_list + priv->rx_tail;
1515                 tail_list->forward = head_list_phys;
1516
1517                 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1518                 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1519                 head_list = priv->rx_list + priv->rx_head;
1520                 head_list_phys = priv->rx_list_dma
1521                         + sizeof(struct tlan_list)*priv->rx_head;
1522         }
1523
1524         if (!ack)
1525                 netdev_info(dev,
1526                             "Received interrupt for uncompleted RX frame\n");
1527
1528
1529         if (eoc) {
1530                 TLAN_DBG(TLAN_DEBUG_RX,
1531                          "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1532                          priv->rx_head, priv->rx_tail);
1533                 head_list = priv->rx_list + priv->rx_head;
1534                 head_list_phys = priv->rx_list_dma
1535                         + sizeof(struct tlan_list)*priv->rx_head;
1536                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1537                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1538                 priv->rx_eoc_count++;
1539         }
1540
1541         if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1542                 tlan_dio_write8(dev->base_addr,
1543                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1544                 if (priv->timer.function == NULL)  {
1545                         priv->timer.function = tlan_timer;
1546                         priv->timer.data = (unsigned long) dev;
1547                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1548                         priv->timer_set_at = jiffies;
1549                         priv->timer_type = TLAN_TIMER_ACTIVITY;
1550                         add_timer(&priv->timer);
1551                 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1552                         priv->timer_set_at = jiffies;
1553                 }
1554         }
1555
1556         return ack;
1557
1558 }
1559
1560
1561
1562
1563 /***************************************************************
1564  *      tlan_handle_dummy
1565  *
1566  *      Returns:
1567  *              1
1568  *      Parms:
1569  *              dev             Device assigned the IRQ that was
1570  *                              raised.
1571  *              host_int        The contents of the HOST_INT
1572  *                              port.
1573  *
1574  *      This function handles the Dummy interrupt, which is
1575  *      raised whenever a test interrupt is generated by setting
1576  *      the Req_Int bit of HOST_CMD to 1.
1577  *
1578  **************************************************************/
1579
1580 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1581 {
1582         netdev_info(dev, "Test interrupt\n");
1583         return 1;
1584
1585 }
1586
1587
1588
1589
1590 /***************************************************************
1591  *      tlan_handle_tx_eoc
1592  *
1593  *      Returns:
1594  *              1
1595  *      Parms:
1596  *              dev             Device assigned the IRQ that was
1597  *                              raised.
1598  *              host_int        The contents of the HOST_INT
1599  *                              port.
1600  *
1601  *      This driver is structured to determine EOC occurrences by
1602  *      reading the CSTAT member of the list structure.  Tx EOC
1603  *      interrupts are disabled via the DIO INTDIS register.
1604  *      However, TLAN chips before revision 3.0 didn't have this
1605  *      functionality, so process EOC events if this is the
1606  *      case.
1607  *
1608  **************************************************************/
1609
1610 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1611 {
1612         struct tlan_priv        *priv = netdev_priv(dev);
1613         struct tlan_list                *head_list;
1614         dma_addr_t              head_list_phys;
1615         u32                     ack = 1;
1616
1617         host_int = 0;
1618         if (priv->tlan_rev < 0x30) {
1619                 TLAN_DBG(TLAN_DEBUG_TX,
1620                          "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1621                          priv->tx_head, priv->tx_tail);
1622                 head_list = priv->tx_list + priv->tx_head;
1623                 head_list_phys = priv->tx_list_dma
1624                         + sizeof(struct tlan_list)*priv->tx_head;
1625                 if ((head_list->c_stat & TLAN_CSTAT_READY)
1626                     == TLAN_CSTAT_READY) {
1627                         netif_stop_queue(dev);
1628                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1629                         ack |= TLAN_HC_GO;
1630                 } else {
1631                         priv->tx_in_progress = 0;
1632                 }
1633         }
1634
1635         return ack;
1636
1637 }
1638
1639
1640
1641
1642 /***************************************************************
1643  *      tlan_handle_status_check
1644  *
1645  *      Returns:
1646  *              0 if Adapter check, 1 if Network Status check.
1647  *      Parms:
1648  *              dev             Device assigned the IRQ that was
1649  *                              raised.
1650  *              host_int        The contents of the HOST_INT
1651  *                              port.
1652  *
1653  *      This function handles Adapter Check/Network Status
1654  *      interrupts generated by the adapter.  It checks the
1655  *      vector in the HOST_INT register to determine if it is
1656  *      an Adapter Check interrupt.  If so, it resets the
1657  *      adapter.  Otherwise it clears the status registers
1658  *      and services the PHY.
1659  *
1660  **************************************************************/
1661
1662 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1663 {
1664         struct tlan_priv        *priv = netdev_priv(dev);
1665         u32             ack;
1666         u32             error;
1667         u8              net_sts;
1668         u32             phy;
1669         u16             tlphy_ctl;
1670         u16             tlphy_sts;
1671
1672         ack = 1;
1673         if (host_int & TLAN_HI_IV_MASK) {
1674                 netif_stop_queue(dev);
1675                 error = inl(dev->base_addr + TLAN_CH_PARM);
1676                 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1677                 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1678                 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1679
1680                 schedule_work(&priv->tlan_tqueue);
1681
1682                 netif_wake_queue(dev);
1683                 ack = 0;
1684         } else {
1685                 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1686                 phy = priv->phy[priv->phy_num];
1687
1688                 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1689                 if (net_sts) {
1690                         tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1691                         TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1692                                  dev->name, (unsigned) net_sts);
1693                 }
1694                 if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1695                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1696                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1697                         if (!(tlphy_sts & TLAN_TS_POLOK) &&
1698                             !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1699                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1700                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1701                                                    tlphy_ctl);
1702                         } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1703                                    (tlphy_ctl & TLAN_TC_SWAPOL)) {
1704                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1705                                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1706                                                    tlphy_ctl);
1707                         }
1708
1709                         if (debug)
1710                                 tlan_phy_print(dev);
1711                 }
1712         }
1713
1714         return ack;
1715
1716 }
1717
1718
1719
1720
1721 /***************************************************************
1722  *      tlan_handle_rx_eoc
1723  *
1724  *      Returns:
1725  *              1
1726  *      Parms:
1727  *              dev             Device assigned the IRQ that was
1728  *                              raised.
1729  *              host_int        The contents of the HOST_INT
1730  *                              port.
1731  *
1732  *      This driver is structured to determine EOC occurrences by
1733  *      reading the CSTAT member of the list structure.  Rx EOC
1734  *      interrupts are disabled via the DIO INTDIS register.
1735  *      However, TLAN chips before revision 3.0 didn't have this
1736  *      CSTAT member or a INTDIS register, so if this chip is
1737  *      pre-3.0, process EOC interrupts normally.
1738  *
1739  **************************************************************/
1740
1741 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1742 {
1743         struct tlan_priv        *priv = netdev_priv(dev);
1744         dma_addr_t      head_list_phys;
1745         u32             ack = 1;
1746
1747         if (priv->tlan_rev < 0x30) {
1748                 TLAN_DBG(TLAN_DEBUG_RX,
1749                          "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1750                          priv->rx_head, priv->rx_tail);
1751                 head_list_phys = priv->rx_list_dma
1752                         + sizeof(struct tlan_list)*priv->rx_head;
1753                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1754                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1755                 priv->rx_eoc_count++;
1756         }
1757
1758         return ack;
1759
1760 }
1761
1762
1763
1764
1765 /*****************************************************************************
1766 ******************************************************************************
1767
1768 ThunderLAN driver timer function
1769
1770 ******************************************************************************
1771 *****************************************************************************/
1772
1773
1774 /***************************************************************
1775  *      tlan_timer
1776  *
1777  *      Returns:
1778  *              Nothing
1779  *      Parms:
1780  *              data    A value given to add timer when
1781  *                      add_timer was called.
1782  *
1783  *      This function handles timed functionality for the
1784  *      TLAN driver.  The two current timer uses are for
1785  *      delaying for autonegotionation and driving the ACT LED.
1786  *      -       Autonegotiation requires being allowed about
1787  *              2 1/2 seconds before attempting to transmit a
1788  *              packet.  It would be a very bad thing to hang
1789  *              the kernel this long, so the driver doesn't
1790  *              allow transmission 'til after this time, for
1791  *              certain PHYs.  It would be much nicer if all
1792  *              PHYs were interrupt-capable like the internal
1793  *              PHY.
1794  *      -       The ACT LED, which shows adapter activity, is
1795  *              driven by the driver, and so must be left on
1796  *              for a short period to power up the LED so it
1797  *              can be seen.  This delay can be changed by
1798  *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1799  *              if desired.  100 ms  produces a slightly
1800  *              sluggish response.
1801  *
1802  **************************************************************/
1803
1804 static void tlan_timer(unsigned long data)
1805 {
1806         struct net_device       *dev = (struct net_device *) data;
1807         struct tlan_priv        *priv = netdev_priv(dev);
1808         u32             elapsed;
1809         unsigned long   flags = 0;
1810
1811         priv->timer.function = NULL;
1812
1813         switch (priv->timer_type) {
1814 #ifdef MONITOR
1815         case TLAN_TIMER_LINK_BEAT:
1816                 tlan_phy_monitor(dev);
1817                 break;
1818 #endif
1819         case TLAN_TIMER_PHY_PDOWN:
1820                 tlan_phy_power_down(dev);
1821                 break;
1822         case TLAN_TIMER_PHY_PUP:
1823                 tlan_phy_power_up(dev);
1824                 break;
1825         case TLAN_TIMER_PHY_RESET:
1826                 tlan_phy_reset(dev);
1827                 break;
1828         case TLAN_TIMER_PHY_START_LINK:
1829                 tlan_phy_start_link(dev);
1830                 break;
1831         case TLAN_TIMER_PHY_FINISH_AN:
1832                 tlan_phy_finish_auto_neg(dev);
1833                 break;
1834         case TLAN_TIMER_FINISH_RESET:
1835                 tlan_finish_reset(dev);
1836                 break;
1837         case TLAN_TIMER_ACTIVITY:
1838                 spin_lock_irqsave(&priv->lock, flags);
1839                 if (priv->timer.function == NULL) {
1840                         elapsed = jiffies - priv->timer_set_at;
1841                         if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1842                                 tlan_dio_write8(dev->base_addr,
1843                                                 TLAN_LED_REG, TLAN_LED_LINK);
1844                         } else  {
1845                                 priv->timer.function = tlan_timer;
1846                                 priv->timer.expires = priv->timer_set_at
1847                                         + TLAN_TIMER_ACT_DELAY;
1848                                 spin_unlock_irqrestore(&priv->lock, flags);
1849                                 add_timer(&priv->timer);
1850                                 break;
1851                         }
1852                 }
1853                 spin_unlock_irqrestore(&priv->lock, flags);
1854                 break;
1855         default:
1856                 break;
1857         }
1858
1859 }
1860
1861
1862
1863
1864 /*****************************************************************************
1865 ******************************************************************************
1866
1867 ThunderLAN driver adapter related routines
1868
1869 ******************************************************************************
1870 *****************************************************************************/
1871
1872
1873 /***************************************************************
1874  *      tlan_reset_lists
1875  *
1876  *      Returns:
1877  *              Nothing
1878  *      Parms:
1879  *              dev     The device structure with the list
1880  *                      stuctures to be reset.
1881  *
1882  *      This routine sets the variables associated with managing
1883  *      the TLAN lists to their initial values.
1884  *
1885  **************************************************************/
1886
1887 static void tlan_reset_lists(struct net_device *dev)
1888 {
1889         struct tlan_priv *priv = netdev_priv(dev);
1890         int             i;
1891         struct tlan_list        *list;
1892         dma_addr_t      list_phys;
1893         struct sk_buff  *skb;
1894
1895         priv->tx_head = 0;
1896         priv->tx_tail = 0;
1897         for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1898                 list = priv->tx_list + i;
1899                 list->c_stat = TLAN_CSTAT_UNUSED;
1900                 list->buffer[0].address = 0;
1901                 list->buffer[2].count = 0;
1902                 list->buffer[2].address = 0;
1903                 list->buffer[8].address = 0;
1904                 list->buffer[9].address = 0;
1905         }
1906
1907         priv->rx_head = 0;
1908         priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1909         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1910                 list = priv->rx_list + i;
1911                 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1912                 list->c_stat = TLAN_CSTAT_READY;
1913                 list->frame_size = TLAN_MAX_FRAME_SIZE;
1914                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1915                 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1916                 if (!skb) {
1917                         netdev_err(dev, "Out of memory for received data\n");
1918                         break;
1919                 }
1920
1921                 list->buffer[0].address = pci_map_single(priv->pci_dev,
1922                                                          skb->data,
1923                                                          TLAN_MAX_FRAME_SIZE,
1924                                                          PCI_DMA_FROMDEVICE);
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                         pci_unmap_single(
1953                                 priv->pci_dev,
1954                                 list->buffer[0].address,
1955                                 max(skb->len,
1956                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
1957                                 PCI_DMA_TODEVICE);
1958                         dev_kfree_skb_any(skb);
1959                         list->buffer[8].address = 0;
1960                         list->buffer[9].address = 0;
1961                 }
1962         }
1963
1964         for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1965                 list = priv->rx_list + i;
1966                 skb = tlan_get_skb(list);
1967                 if (skb) {
1968                         pci_unmap_single(priv->pci_dev,
1969                                          list->buffer[0].address,
1970                                          TLAN_MAX_FRAME_SIZE,
1971                                          PCI_DMA_FROMDEVICE);
1972                         dev_kfree_skb_any(skb);
1973                         list->buffer[8].address = 0;
1974                         list->buffer[9].address = 0;
1975                 }
1976         }
1977 }
1978
1979
1980
1981
1982 /***************************************************************
1983  *      tlan_print_dio
1984  *
1985  *      Returns:
1986  *              Nothing
1987  *      Parms:
1988  *              io_base         Base IO port of the device of
1989  *                              which to print DIO registers.
1990  *
1991  *      This function prints out all the internal (DIO)
1992  *      registers of a TLAN chip.
1993  *
1994  **************************************************************/
1995
1996 static void tlan_print_dio(u16 io_base)
1997 {
1998         u32 data0, data1;
1999         int     i;
2000
2001         pr_info("Contents of internal registers for io base 0x%04hx\n",
2002                 io_base);
2003         pr_info("Off.  +0        +4\n");
2004         for (i = 0; i < 0x4C; i += 8) {
2005                 data0 = tlan_dio_read32(io_base, i);
2006                 data1 = tlan_dio_read32(io_base, i + 0x4);
2007                 pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2008         }
2009
2010 }
2011
2012
2013
2014
2015 /***************************************************************
2016  *      TLan_PrintList
2017  *
2018  *      Returns:
2019  *              Nothing
2020  *      Parms:
2021  *              list    A pointer to the struct tlan_list structure to
2022  *                      be printed.
2023  *              type    A string to designate type of list,
2024  *                      "Rx" or "Tx".
2025  *              num     The index of the list.
2026  *
2027  *      This function prints out the contents of the list
2028  *      pointed to by the list parameter.
2029  *
2030  **************************************************************/
2031
2032 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2033 {
2034         int i;
2035
2036         pr_info("%s List %d at %p\n", type, num, list);
2037         pr_info("   Forward    = 0x%08x\n",  list->forward);
2038         pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2039         pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2040         /* for (i = 0; i < 10; i++) { */
2041         for (i = 0; i < 2; i++) {
2042                 pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2043                         i, list->buffer[i].count, list->buffer[i].address);
2044         }
2045
2046 }
2047
2048
2049
2050
2051 /***************************************************************
2052  *      tlan_read_and_clear_stats
2053  *
2054  *      Returns:
2055  *              Nothing
2056  *      Parms:
2057  *              dev     Pointer to device structure of adapter
2058  *                      to which to read stats.
2059  *              record  Flag indicating whether to add
2060  *
2061  *      This functions reads all the internal status registers
2062  *      of the TLAN chip, which clears them as a side effect.
2063  *      It then either adds the values to the device's status
2064  *      struct, or discards them, depending on whether record
2065  *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2066  *
2067  **************************************************************/
2068
2069 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2070 {
2071         u32             tx_good, tx_under;
2072         u32             rx_good, rx_over;
2073         u32             def_tx, crc, code;
2074         u32             multi_col, single_col;
2075         u32             excess_col, late_col, loss;
2076
2077         outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2078         tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2079         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2080         tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2081         tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2082
2083         outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2084         rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2085         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2086         rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2087         rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2088
2089         outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2090         def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2091         def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2092         crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2093         code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2094
2095         outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2096         multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2097         multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2098         single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2099         single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2100
2101         outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2102         excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2103         late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2104         loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2105
2106         if (record) {
2107                 dev->stats.rx_packets += rx_good;
2108                 dev->stats.rx_errors  += rx_over + crc + code;
2109                 dev->stats.tx_packets += tx_good;
2110                 dev->stats.tx_errors  += tx_under + loss;
2111                 dev->stats.collisions += multi_col
2112                         + single_col + excess_col + late_col;
2113
2114                 dev->stats.rx_over_errors    += rx_over;
2115                 dev->stats.rx_crc_errors     += crc;
2116                 dev->stats.rx_frame_errors   += code;
2117
2118                 dev->stats.tx_aborted_errors += tx_under;
2119                 dev->stats.tx_carrier_errors += loss;
2120         }
2121
2122 }
2123
2124
2125
2126
2127 /***************************************************************
2128  *      TLan_Reset
2129  *
2130  *      Returns:
2131  *              0
2132  *      Parms:
2133  *              dev     Pointer to device structure of adapter
2134  *                      to be reset.
2135  *
2136  *      This function resets the adapter and it's physical
2137  *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2138  *      Programmer's Guide" for details.  The routine tries to
2139  *      implement what is detailed there, though adjustments
2140  *      have been made.
2141  *
2142  **************************************************************/
2143
2144 static void
2145 tlan_reset_adapter(struct net_device *dev)
2146 {
2147         struct tlan_priv        *priv = netdev_priv(dev);
2148         int             i;
2149         u32             addr;
2150         u32             data;
2151         u8              data8;
2152
2153         priv->tlan_full_duplex = false;
2154         priv->phy_online = 0;
2155         netif_carrier_off(dev);
2156
2157 /*  1.  Assert reset bit. */
2158
2159         data = inl(dev->base_addr + TLAN_HOST_CMD);
2160         data |= TLAN_HC_AD_RST;
2161         outl(data, dev->base_addr + TLAN_HOST_CMD);
2162
2163         udelay(1000);
2164
2165 /*  2.  Turn off interrupts. (Probably isn't necessary) */
2166
2167         data = inl(dev->base_addr + TLAN_HOST_CMD);
2168         data |= TLAN_HC_INT_OFF;
2169         outl(data, dev->base_addr + TLAN_HOST_CMD);
2170
2171 /*  3.  Clear AREGs and HASHs. */
2172
2173         for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2174                 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2175
2176 /*  4.  Setup NetConfig register. */
2177
2178         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2179         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2180
2181 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2182
2183         outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2184         outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2185
2186 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2187
2188         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2189         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2190         tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2191
2192 /*  7.  Setup the remaining registers. */
2193
2194         if (priv->tlan_rev >= 0x30) {
2195                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2196                 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2197         }
2198         tlan_phy_detect(dev);
2199         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2200
2201         if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2202                 data |= TLAN_NET_CFG_BIT;
2203                 if (priv->aui == 1) {
2204                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2205                 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2206                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2207                         priv->tlan_full_duplex = true;
2208                 } else {
2209                         tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2210                 }
2211         }
2212
2213         if (priv->phy_num == 0)
2214                 data |= TLAN_NET_CFG_PHY_EN;
2215         tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2216
2217         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2218                 tlan_finish_reset(dev);
2219         else
2220                 tlan_phy_power_down(dev);
2221
2222 }
2223
2224
2225
2226
2227 static void
2228 tlan_finish_reset(struct net_device *dev)
2229 {
2230         struct tlan_priv        *priv = netdev_priv(dev);
2231         u8              data;
2232         u32             phy;
2233         u8              sio;
2234         u16             status;
2235         u16             partner;
2236         u16             tlphy_ctl;
2237         u16             tlphy_par;
2238         u16             tlphy_id1, tlphy_id2;
2239         int             i;
2240
2241         phy = priv->phy[priv->phy_num];
2242
2243         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2244         if (priv->tlan_full_duplex)
2245                 data |= TLAN_NET_CMD_DUPLEX;
2246         tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2247         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2248         if (priv->phy_num == 0)
2249                 data |= TLAN_NET_MASK_MASK7;
2250         tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2251         tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2252         tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2253         tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2254
2255         if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2256             (priv->aui)) {
2257                 status = MII_GS_LINK;
2258                 netdev_info(dev, "Link forced\n");
2259         } else {
2260                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2261                 udelay(1000);
2262                 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2263                 if ((status & MII_GS_LINK) &&
2264                     /* We only support link info on Nat.Sem. PHY's */
2265                     (tlphy_id1 == NAT_SEM_ID1) &&
2266                     (tlphy_id2 == NAT_SEM_ID2)) {
2267                         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
2268                         tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);
2269
2270                         netdev_info(dev,
2271                                     "Link active with %s %uMbps %s-Duplex\n",
2272                                     !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2273                                     ? "forced" : "Autonegotiation enabled,",
2274                                     tlphy_par & TLAN_PHY_SPEED_100
2275                                     ? 100 : 10,
2276                                     tlphy_par & TLAN_PHY_DUPLEX_FULL
2277                                     ? "Full" : "Half");
2278
2279                         if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2280                                 netdev_info(dev, "Partner capability:");
2281                                 for (i = 5; i < 10; i++)
2282                                         if (partner & (1 << i))
2283                                                 pr_cont(" %s", media[i-5]);
2284                                 pr_cont("\n");
2285                         }
2286
2287                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2288                                         TLAN_LED_LINK);
2289 #ifdef MONITOR
2290                         /* We have link beat..for now anyway */
2291                         priv->link = 1;
2292                         /*Enabling link beat monitoring */
2293                         tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2294 #endif
2295                 } else if (status & MII_GS_LINK)  {
2296                         netdev_info(dev, "Link active\n");
2297                         tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2298                                         TLAN_LED_LINK);
2299                 }
2300         }
2301
2302         if (priv->phy_num == 0) {
2303                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2304                 tlphy_ctl |= TLAN_TC_INTEN;
2305                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2306                 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2307                 sio |= TLAN_NET_SIO_MINTEN;
2308                 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2309         }
2310
2311         if (status & MII_GS_LINK) {
2312                 tlan_set_mac(dev, 0, dev->dev_addr);
2313                 priv->phy_online = 1;
2314                 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2315                 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2316                         outb((TLAN_HC_REQ_INT >> 8),
2317                              dev->base_addr + TLAN_HOST_CMD + 1);
2318                 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2319                 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2320                 netif_carrier_on(dev);
2321         } else {
2322                 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2323                 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2324                 return;
2325         }
2326         tlan_set_multicast_list(dev);
2327
2328 }
2329
2330
2331
2332
2333 /***************************************************************
2334  *      tlan_set_mac
2335  *
2336  *      Returns:
2337  *              Nothing
2338  *      Parms:
2339  *              dev     Pointer to device structure of adapter
2340  *                      on which to change the AREG.
2341  *              areg    The AREG to set the address in (0 - 3).
2342  *              mac     A pointer to an array of chars.  Each
2343  *                      element stores one byte of the address.
2344  *                      IE, it isn't in ascii.
2345  *
2346  *      This function transfers a MAC address to one of the
2347  *      TLAN AREGs (address registers).  The TLAN chip locks
2348  *      the register on writing to offset 0 and unlocks the
2349  *      register after writing to offset 5.  If NULL is passed
2350  *      in mac, then the AREG is filled with 0's.
2351  *
2352  **************************************************************/
2353
2354 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2355 {
2356         int i;
2357
2358         areg *= 6;
2359
2360         if (mac != NULL) {
2361                 for (i = 0; i < 6; i++)
2362                         tlan_dio_write8(dev->base_addr,
2363                                         TLAN_AREG_0 + areg + i, mac[i]);
2364         } else {
2365                 for (i = 0; i < 6; i++)
2366                         tlan_dio_write8(dev->base_addr,
2367                                         TLAN_AREG_0 + areg + i, 0);
2368         }
2369
2370 }
2371
2372
2373
2374
2375 /*****************************************************************************
2376 ******************************************************************************
2377
2378 ThunderLAN driver PHY layer routines
2379
2380 ******************************************************************************
2381 *****************************************************************************/
2382
2383
2384
2385 /*********************************************************************
2386  *      tlan_phy_print
2387  *
2388  *      Returns:
2389  *              Nothing
2390  *      Parms:
2391  *              dev     A pointer to the device structure of the
2392  *                      TLAN device having the PHYs to be detailed.
2393  *
2394  *      This function prints the registers a PHY (aka transceiver).
2395  *
2396  ********************************************************************/
2397
2398 static void tlan_phy_print(struct net_device *dev)
2399 {
2400         struct tlan_priv *priv = netdev_priv(dev);
2401         u16 i, data0, data1, data2, data3, phy;
2402
2403         phy = priv->phy[priv->phy_num];
2404
2405         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2406                 netdev_info(dev, "Unmanaged PHY\n");
2407         } else if (phy <= TLAN_PHY_MAX_ADDR) {
2408                 netdev_info(dev, "PHY 0x%02x\n", phy);
2409                 pr_info("   Off.  +0     +1     +2     +3\n");
2410                 for (i = 0; i < 0x20; i += 4) {
2411                         tlan_mii_read_reg(dev, phy, i, &data0);
2412                         tlan_mii_read_reg(dev, phy, i + 1, &data1);
2413                         tlan_mii_read_reg(dev, phy, i + 2, &data2);
2414                         tlan_mii_read_reg(dev, phy, i + 3, &data3);
2415                         pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2416                                 i, data0, data1, data2, data3);
2417                 }
2418         } else {
2419                 netdev_info(dev, "Invalid PHY\n");
2420         }
2421
2422 }
2423
2424
2425
2426
2427 /*********************************************************************
2428  *      tlan_phy_detect
2429  *
2430  *      Returns:
2431  *              Nothing
2432  *      Parms:
2433  *              dev     A pointer to the device structure of the adapter
2434  *                      for which the PHY needs determined.
2435  *
2436  *      So far I've found that adapters which have external PHYs
2437  *      may also use the internal PHY for part of the functionality.
2438  *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2439  *      chip has an internal PHY, and then finds the first external
2440  *      PHY (starting from address 0) if it exists).
2441  *
2442  ********************************************************************/
2443
2444 static void tlan_phy_detect(struct net_device *dev)
2445 {
2446         struct tlan_priv *priv = netdev_priv(dev);
2447         u16             control;
2448         u16             hi;
2449         u16             lo;
2450         u32             phy;
2451
2452         if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2453                 priv->phy_num = 0xffff;
2454                 return;
2455         }
2456
2457         tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2458
2459         if (hi != 0xffff)
2460                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2461         else
2462                 priv->phy[0] = TLAN_PHY_NONE;
2463
2464         priv->phy[1] = TLAN_PHY_NONE;
2465         for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2466                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2467                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2468                 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2469                 if ((control != 0xffff) ||
2470                     (hi != 0xffff) || (lo != 0xffff)) {
2471                         TLAN_DBG(TLAN_DEBUG_GNRL,
2472                                  "PHY found at %02x %04x %04x %04x\n",
2473                                  phy, control, hi, lo);
2474                         if ((priv->phy[1] == TLAN_PHY_NONE) &&
2475                             (phy != TLAN_PHY_MAX_ADDR)) {
2476                                 priv->phy[1] = phy;
2477                         }
2478                 }
2479         }
2480
2481         if (priv->phy[1] != TLAN_PHY_NONE)
2482                 priv->phy_num = 1;
2483         else if (priv->phy[0] != TLAN_PHY_NONE)
2484                 priv->phy_num = 0;
2485         else
2486                 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2487
2488 }
2489
2490
2491
2492
2493 static void tlan_phy_power_down(struct net_device *dev)
2494 {
2495         struct tlan_priv        *priv = netdev_priv(dev);
2496         u16             value;
2497
2498         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2499         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2500         tlan_mii_sync(dev->base_addr);
2501         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2502         if ((priv->phy_num == 0) &&
2503             (priv->phy[1] != TLAN_PHY_NONE) &&
2504             (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2505                 tlan_mii_sync(dev->base_addr);
2506                 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2507         }
2508
2509         /* Wait for 50 ms and powerup
2510          * This is abitrary.  It is intended to make sure the
2511          * transceiver settles.
2512          */
2513         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2514
2515 }
2516
2517
2518
2519
2520 static void tlan_phy_power_up(struct net_device *dev)
2521 {
2522         struct tlan_priv        *priv = netdev_priv(dev);
2523         u16             value;
2524
2525         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2526         tlan_mii_sync(dev->base_addr);
2527         value = MII_GC_LOOPBK;
2528         tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2529         tlan_mii_sync(dev->base_addr);
2530         /* Wait for 500 ms and reset the
2531          * transceiver.  The TLAN docs say both 50 ms and
2532          * 500 ms, so do the longer, just in case.
2533          */
2534         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2535
2536 }
2537
2538
2539
2540
2541 static void tlan_phy_reset(struct net_device *dev)
2542 {
2543         struct tlan_priv        *priv = netdev_priv(dev);
2544         u16             phy;
2545         u16             value;
2546
2547         phy = priv->phy[priv->phy_num];
2548
2549         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name);
2550         tlan_mii_sync(dev->base_addr);
2551         value = MII_GC_LOOPBK | MII_GC_RESET;
2552         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2553         tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2554         while (value & MII_GC_RESET)
2555                 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2556
2557         /* Wait for 500 ms and initialize.
2558          * I don't remember why I wait this long.
2559          * I've changed this to 50ms, as it seems long enough.
2560          */
2561         tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2562
2563 }
2564
2565
2566
2567
2568 static void tlan_phy_start_link(struct net_device *dev)
2569 {
2570         struct tlan_priv        *priv = netdev_priv(dev);
2571         u16             ability;
2572         u16             control;
2573         u16             data;
2574         u16             phy;
2575         u16             status;
2576         u16             tctl;
2577
2578         phy = priv->phy[priv->phy_num];
2579         TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2580         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2581         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2582
2583         if ((status & MII_GS_AUTONEG) &&
2584             (!priv->aui)) {
2585                 ability = status >> 11;
2586                 if (priv->speed  == TLAN_SPEED_10 &&
2587                     priv->duplex == TLAN_DUPLEX_HALF) {
2588                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2589                 } else if (priv->speed == TLAN_SPEED_10 &&
2590                            priv->duplex == TLAN_DUPLEX_FULL) {
2591                         priv->tlan_full_duplex = true;
2592                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2593                 } else if (priv->speed == TLAN_SPEED_100 &&
2594                            priv->duplex == TLAN_DUPLEX_HALF) {
2595                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2596                 } else if (priv->speed == TLAN_SPEED_100 &&
2597                            priv->duplex == TLAN_DUPLEX_FULL) {
2598                         priv->tlan_full_duplex = true;
2599                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2600                 } else {
2601
2602                         /* Set Auto-Neg advertisement */
2603                         tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2604                                            (ability << 5) | 1);
2605                         /* Enablee Auto-Neg */
2606                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2607                         /* Restart Auto-Neg */
2608                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2609                         /* Wait for 4 sec for autonegotiation
2610                          * to complete.  The max spec time is less than this
2611                          * but the card need additional time to start AN.
2612                          * .5 sec should be plenty extra.
2613                          */
2614                         netdev_info(dev, "Starting autonegotiation\n");
2615                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2616                         return;
2617                 }
2618
2619         }
2620
2621         if ((priv->aui) && (priv->phy_num != 0)) {
2622                 priv->phy_num = 0;
2623                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2624                         | TLAN_NET_CFG_PHY_EN;
2625                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2626                 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2627                 return;
2628         } else if (priv->phy_num == 0) {
2629                 control = 0;
2630                 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2631                 if (priv->aui) {
2632                         tctl |= TLAN_TC_AUISEL;
2633                 } else {
2634                         tctl &= ~TLAN_TC_AUISEL;
2635                         if (priv->duplex == TLAN_DUPLEX_FULL) {
2636                                 control |= MII_GC_DUPLEX;
2637                                 priv->tlan_full_duplex = true;
2638                         }
2639                         if (priv->speed == TLAN_SPEED_100)
2640                                 control |= MII_GC_SPEEDSEL;
2641                 }
2642                 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2643                 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2644         }
2645
2646         /* Wait for 2 sec to give the transceiver time
2647          * to establish link.
2648          */
2649         tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2650
2651 }
2652
2653
2654
2655
2656 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2657 {
2658         struct tlan_priv        *priv = netdev_priv(dev);
2659         u16             an_adv;
2660         u16             an_lpa;
2661         u16             data;
2662         u16             mode;
2663         u16             phy;
2664         u16             status;
2665
2666         phy = priv->phy[priv->phy_num];
2667
2668         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2669         udelay(1000);
2670         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2671
2672         if (!(status & MII_GS_AUTOCMPLT)) {
2673                 /* Wait for 8 sec to give the process
2674                  * more time.  Perhaps we should fail after a while.
2675                  */
2676                 if (!priv->neg_be_verbose++) {
2677                         pr_info("Giving autonegotiation more time.\n");
2678                         pr_info("Please check that your adapter has\n");
2679                         pr_info("been properly connected to a HUB or Switch.\n");
2680                         pr_info("Trying to establish link in the background...\n");
2681                 }
2682                 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2683                 return;
2684         }
2685
2686         netdev_info(dev, "Autonegotiation complete\n");
2687         tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2688         tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2689         mode = an_adv & an_lpa & 0x03E0;
2690         if (mode & 0x0100)
2691                 priv->tlan_full_duplex = true;
2692         else if (!(mode & 0x0080) && (mode & 0x0040))
2693                 priv->tlan_full_duplex = true;
2694
2695         if ((!(mode & 0x0180)) &&
2696             (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2697             (priv->phy_num != 0)) {
2698                 priv->phy_num = 0;
2699                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2700                         | TLAN_NET_CFG_PHY_EN;
2701                 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2702                 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2703                 return;
2704         }
2705
2706         if (priv->phy_num == 0) {
2707                 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2708                     (an_adv & an_lpa & 0x0040)) {
2709                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2710                                            MII_GC_AUTOENB | MII_GC_DUPLEX);
2711                         netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2712                 } else {
2713                         tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2714                                            MII_GC_AUTOENB);
2715                         netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2716                 }
2717         }
2718
2719         /* Wait for 100 ms.  No reason in partiticular.
2720          */
2721         tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2722
2723 }
2724
2725 #ifdef MONITOR
2726
2727 /*********************************************************************
2728  *
2729  *     tlan_phy_monitor
2730  *
2731  *     Returns:
2732  *            None
2733  *
2734  *     Params:
2735  *            dev            The device structure of this device.
2736  *
2737  *
2738  *     This function monitors PHY condition by reading the status
2739  *     register via the MII bus. This can be used to give info
2740  *     about link changes (up/down), and possible switch to alternate
2741  *     media.
2742  *
2743  *******************************************************************/
2744
2745 void tlan_phy_monitor(struct net_device *dev)
2746 {
2747         struct tlan_priv *priv = netdev_priv(dev);
2748         u16     phy;
2749         u16     phy_status;
2750
2751         phy = priv->phy[priv->phy_num];
2752
2753         /* Get PHY status register */
2754         tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2755
2756         /* Check if link has been lost */
2757         if (!(phy_status & MII_GS_LINK)) {
2758                 if (priv->link) {
2759                         priv->link = 0;
2760                         printk(KERN_DEBUG "TLAN: %s has lost link\n",
2761                                dev->name);
2762                         netif_carrier_off(dev);
2763                         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2764                         return;
2765                 }
2766         }
2767
2768         /* Link restablished? */
2769         if ((phy_status & MII_GS_LINK) && !priv->link) {
2770                 priv->link = 1;
2771                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2772                        dev->name);
2773                 netif_carrier_on(dev);
2774         }
2775
2776         /* Setup a new monitor */
2777         tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2778 }
2779
2780 #endif /* MONITOR */
2781
2782
2783 /*****************************************************************************
2784 ******************************************************************************
2785
2786 ThunderLAN driver MII routines
2787
2788 these routines are based on the information in chap. 2 of the
2789 "ThunderLAN Programmer's Guide", pp. 15-24.
2790
2791 ******************************************************************************
2792 *****************************************************************************/
2793
2794
2795 /***************************************************************
2796  *      tlan_mii_read_reg
2797  *
2798  *      Returns:
2799  *              false   if ack received ok
2800  *              true    if no ack received or other error
2801  *
2802  *      Parms:
2803  *              dev             The device structure containing
2804  *                              The io address and interrupt count
2805  *                              for this device.
2806  *              phy             The address of the PHY to be queried.
2807  *              reg             The register whose contents are to be
2808  *                              retrieved.
2809  *              val             A pointer to a variable to store the
2810  *                              retrieved value.
2811  *
2812  *      This function uses the TLAN's MII bus to retrieve the contents
2813  *      of a given register on a PHY.  It sends the appropriate info
2814  *      and then reads the 16-bit register value from the MII bus via
2815  *      the TLAN SIO register.
2816  *
2817  **************************************************************/
2818
2819 static bool
2820 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2821 {
2822         u8      nack;
2823         u16     sio, tmp;
2824         u32     i;
2825         bool    err;
2826         int     minten;
2827         struct tlan_priv *priv = netdev_priv(dev);
2828         unsigned long flags = 0;
2829
2830         err = false;
2831         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2832         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2833
2834         if (!in_irq())
2835                 spin_lock_irqsave(&priv->lock, flags);
2836
2837         tlan_mii_sync(dev->base_addr);
2838
2839         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2840         if (minten)
2841                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2842
2843         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
2844         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* read  (10b) */
2845         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
2846         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
2847
2848
2849         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);        /* change direction */
2850
2851         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* clock idle bit */
2852         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2853         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* wait 300ns */
2854
2855         nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);   /* check for ACK */
2856         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);           /* finish ACK */
2857         if (nack) {                                     /* no ACK, so fake it */
2858                 for (i = 0; i < 16; i++) {
2859                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2860                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2861                 }
2862                 tmp = 0xffff;
2863                 err = true;
2864         } else {                                        /* ACK, so read data */
2865                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2866                         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2867                         if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2868                                 tmp |= i;
2869                         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2870                 }
2871         }
2872
2873
2874         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);         /* idle cycle */
2875         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2876
2877         if (minten)
2878                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2879
2880         *val = tmp;
2881
2882         if (!in_irq())
2883                 spin_unlock_irqrestore(&priv->lock, flags);
2884
2885         return err;
2886
2887 }
2888
2889
2890
2891
2892 /***************************************************************
2893  *      tlan_mii_send_data
2894  *
2895  *      Returns:
2896  *              Nothing
2897  *      Parms:
2898  *              base_port       The base IO port of the adapter in
2899  *                              question.
2900  *              dev             The address of the PHY to be queried.
2901  *              data            The value to be placed on the MII bus.
2902  *              num_bits        The number of bits in data that are to
2903  *                              be placed on the MII bus.
2904  *
2905  *      This function sends on sequence of bits on the MII
2906  *      configuration bus.
2907  *
2908  **************************************************************/
2909
2910 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2911 {
2912         u16 sio;
2913         u32 i;
2914
2915         if (num_bits == 0)
2916                 return;
2917
2918         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2919         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2920         tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2921
2922         for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2923                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2924                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2925                 if (data & i)
2926                         tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2927                 else
2928                         tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2929                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2930                 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2931         }
2932
2933 }
2934
2935
2936
2937
2938 /***************************************************************
2939  *      TLan_MiiSync
2940  *
2941  *      Returns:
2942  *              Nothing
2943  *      Parms:
2944  *              base_port       The base IO port of the adapter in
2945  *                              question.
2946  *
2947  *      This functions syncs all PHYs in terms of the MII configuration
2948  *      bus.
2949  *
2950  **************************************************************/
2951
2952 static void tlan_mii_sync(u16 base_port)
2953 {
2954         int i;
2955         u16 sio;
2956
2957         outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2958         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2959
2960         tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2961         for (i = 0; i < 32; i++) {
2962                 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2963                 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2964         }
2965
2966 }
2967
2968
2969
2970
2971 /***************************************************************
2972  *      tlan_mii_write_reg
2973  *
2974  *      Returns:
2975  *              Nothing
2976  *      Parms:
2977  *              dev             The device structure for the device
2978  *                              to write to.
2979  *              phy             The address of the PHY to be written to.
2980  *              reg             The register whose contents are to be
2981  *                              written.
2982  *              val             The value to be written to the register.
2983  *
2984  *      This function uses the TLAN's MII bus to write the contents of a
2985  *      given register on a PHY.  It sends the appropriate info and then
2986  *      writes the 16-bit register value from the MII configuration bus
2987  *      via the TLAN SIO register.
2988  *
2989  **************************************************************/
2990
2991 static void
2992 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2993 {
2994         u16     sio;
2995         int     minten;
2996         unsigned long flags = 0;
2997         struct tlan_priv *priv = netdev_priv(dev);
2998
2999         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3000         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3001
3002         if (!in_irq())
3003                 spin_lock_irqsave(&priv->lock, flags);
3004
3005         tlan_mii_sync(dev->base_addr);
3006
3007         minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3008         if (minten)
3009                 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3010
3011         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* start (01b) */
3012         tlan_mii_send_data(dev->base_addr, 0x1, 2);     /* write (01b) */
3013         tlan_mii_send_data(dev->base_addr, phy, 5);     /* device #      */
3014         tlan_mii_send_data(dev->base_addr, reg, 5);     /* register #    */
3015
3016         tlan_mii_send_data(dev->base_addr, 0x2, 2);     /* send ACK */
3017         tlan_mii_send_data(dev->base_addr, val, 16);    /* send data */
3018
3019         tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3020         tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3021
3022         if (minten)
3023                 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3024
3025         if (!in_irq())
3026                 spin_unlock_irqrestore(&priv->lock, flags);
3027
3028 }
3029
3030
3031
3032
3033 /*****************************************************************************
3034 ******************************************************************************
3035
3036 ThunderLAN driver eeprom routines
3037
3038 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3039 EEPROM.  these functions are based on information in microchip's
3040 data sheet.  I don't know how well this functions will work with
3041 other Eeproms.
3042
3043 ******************************************************************************
3044 *****************************************************************************/
3045
3046
3047 /***************************************************************
3048  *      tlan_ee_send_start
3049  *
3050  *      Returns:
3051  *              Nothing
3052  *      Parms:
3053  *              io_base         The IO port base address for the
3054  *                              TLAN device with the EEPROM to
3055  *                              use.
3056  *
3057  *      This function sends a start cycle to an EEPROM attached
3058  *      to a TLAN chip.
3059  *
3060  **************************************************************/
3061
3062 static void tlan_ee_send_start(u16 io_base)
3063 {
3064         u16     sio;
3065
3066         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3067         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3068
3069         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3070         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3071         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3072         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3073         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3074
3075 }
3076
3077
3078
3079
3080 /***************************************************************
3081  *      tlan_ee_send_byte
3082  *
3083  *      Returns:
3084  *              If the correct ack was received, 0, otherwise 1
3085  *      Parms:  io_base         The IO port base address for the
3086  *                              TLAN device with the EEPROM to
3087  *                              use.
3088  *              data            The 8 bits of information to
3089  *                              send to the EEPROM.
3090  *              stop            If TLAN_EEPROM_STOP is passed, a
3091  *                              stop cycle is sent after the
3092  *                              byte is sent after the ack is
3093  *                              read.
3094  *
3095  *      This function sends a byte on the serial EEPROM line,
3096  *      driving the clock to send each bit. The function then
3097  *      reverses transmission direction and reads an acknowledge
3098  *      bit.
3099  *
3100  **************************************************************/
3101
3102 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3103 {
3104         int     err;
3105         u8      place;
3106         u16     sio;
3107
3108         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3109         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3110
3111         /* Assume clock is low, tx is enabled; */
3112         for (place = 0x80; place != 0; place >>= 1) {
3113                 if (place & data)
3114                         tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3115                 else
3116                         tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3117                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3118                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3119         }
3120         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3121         tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3122         err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3123         tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3124         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3125
3126         if ((!err) && stop) {
3127                 /* STOP, raise data while clock is high */
3128                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3129                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3130                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3131         }
3132
3133         return err;
3134
3135 }
3136
3137
3138
3139
3140 /***************************************************************
3141  *      tlan_ee_receive_byte
3142  *
3143  *      Returns:
3144  *              Nothing
3145  *      Parms:
3146  *              io_base         The IO port base address for the
3147  *                              TLAN device with the EEPROM to
3148  *                              use.
3149  *              data            An address to a char to hold the
3150  *                              data sent from the EEPROM.
3151  *              stop            If TLAN_EEPROM_STOP is passed, a
3152  *                              stop cycle is sent after the
3153  *                              byte is received, and no ack is
3154  *                              sent.
3155  *
3156  *      This function receives 8 bits of data from the EEPROM
3157  *      over the serial link.  It then sends and ack bit, or no
3158  *      ack and a stop bit.  This function is used to retrieve
3159  *      data after the address of a byte in the EEPROM has been
3160  *      sent.
3161  *
3162  **************************************************************/
3163
3164 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3165 {
3166         u8  place;
3167         u16 sio;
3168
3169         outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3170         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3171         *data = 0;
3172
3173         /* Assume clock is low, tx is enabled; */
3174         tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3175         for (place = 0x80; place; place >>= 1) {
3176                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3177                 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3178                         *data |= place;
3179                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3180         }
3181
3182         tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3183         if (!stop) {
3184                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3185                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3186                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3187         } else {
3188                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);  /* no ack = 1 (?) */
3189                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3190                 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3191                 /* STOP, raise data while clock is high */
3192                 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3193                 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3194                 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3195         }
3196
3197 }
3198
3199
3200
3201
3202 /***************************************************************
3203  *      tlan_ee_read_byte
3204  *
3205  *      Returns:
3206  *              No error = 0, else, the stage at which the error
3207  *              occurred.
3208  *      Parms:
3209  *              io_base         The IO port base address for the
3210  *                              TLAN device with the EEPROM to
3211  *                              use.
3212  *              ee_addr         The address of the byte in the
3213  *                              EEPROM whose contents are to be
3214  *                              retrieved.
3215  *              data            An address to a char to hold the
3216  *                              data obtained from the EEPROM.
3217  *
3218  *      This function reads a byte of information from an byte
3219  *      cell in the EEPROM.
3220  *
3221  **************************************************************/
3222
3223 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3224 {
3225         int err;
3226         struct tlan_priv *priv = netdev_priv(dev);
3227         unsigned long flags = 0;
3228         int ret = 0;
3229
3230         spin_lock_irqsave(&priv->lock, flags);
3231
3232         tlan_ee_send_start(dev->base_addr);
3233         err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3234         if (err) {
3235                 ret = 1;
3236                 goto fail;
3237         }
3238         err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3239         if (err) {
3240                 ret = 2;
3241                 goto fail;
3242         }
3243         tlan_ee_send_start(dev->base_addr);
3244         err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3245         if (err) {
3246                 ret = 3;
3247                 goto fail;
3248         }
3249         tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3250 fail:
3251         spin_unlock_irqrestore(&priv->lock, flags);
3252
3253         return ret;
3254
3255 }
3256
3257
3258