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[deliverable/linux.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 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/ioport.h>
33 #include <linux/eisa.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/delay.h>
39 #include <linux/spinlock.h>
40 #include <linux/workqueue.h>
41 #include <linux/mii.h>
42
43 #include "tlan.h"
44
45
46 /* For removing EISA devices */
47 static struct net_device *tlan_eisa_devices;
48
49 static int tlan_devices_installed;
50
51 /* Set speed, duplex and aui settings */
52 static int aui[MAX_TLAN_BOARDS];
53 static int duplex[MAX_TLAN_BOARDS];
54 static int speed[MAX_TLAN_BOARDS];
55 static int boards_found;
56 module_param_array(aui, int, NULL, 0);
57 module_param_array(duplex, int, NULL, 0);
58 module_param_array(speed, int, NULL, 0);
59 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
60 MODULE_PARM_DESC(duplex,
61 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
62 MODULE_PARM_DESC(speed, "ThunderLAN port speen setting(s) (0,10,100)");
63
64 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
65 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
66 MODULE_LICENSE("GPL");
67
68
69 /* Define this to enable Link beat monitoring */
70 #undef MONITOR
71
72 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
73 static int debug;
74 module_param(debug, int, 0);
75 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
76
77 static const char tlan_signature[] = "TLAN";
78 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
79 static int tlan_have_pci;
80 static int tlan_have_eisa;
81
82 static const char * const media[] = {
83 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
84 "100BaseTx-FD", "100BaseT4", NULL
85 };
86
87 static struct board {
88 const char *device_label;
89 u32 flags;
90 u16 addr_ofs;
91 } board_info[] = {
92 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
93 { "Compaq Netelligent 10/100 TX PCI UTP",
94 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
95 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
96 { "Compaq NetFlex-3/P",
97 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
98 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
99 { "Compaq Netelligent Integrated 10/100 TX UTP",
100 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
101 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
102 TLAN_ADAPTER_NONE, 0x83 },
103 { "Compaq Netelligent 10/100 TX Embedded UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
105 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
106 { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
107 { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
108 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
109 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
110 { "Compaq NetFlex-3/E",
111 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
112 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
113 { "Compaq NetFlex-3/E",
114 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
115 };
116
117 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
118 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
119 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
120 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
134 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
136 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
140 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
142 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
144 { 0,}
145 };
146 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
147
148 static void tlan_eisa_probe(void);
149 static void tlan_eisa_cleanup(void);
150 static int tlan_init(struct net_device *);
151 static int tlan_open(struct net_device *dev);
152 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
153 static irqreturn_t tlan_handle_interrupt(int, void *);
154 static int tlan_close(struct net_device *);
155 static struct net_device_stats *tlan_get_stats(struct net_device *);
156 static void tlan_set_multicast_list(struct net_device *);
157 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
158 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
159 int irq, int rev, const struct pci_device_id *ent);
160 static void tlan_tx_timeout(struct net_device *dev);
161 static void tlan_tx_timeout_work(struct work_struct *work);
162 static int tlan_init_one(struct pci_dev *pdev,
163 const struct pci_device_id *ent);
164
165 static u32 tlan_handle_tx_eof(struct net_device *, u16);
166 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
167 static u32 tlan_handle_rx_eof(struct net_device *, u16);
168 static u32 tlan_handle_dummy(struct net_device *, u16);
169 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
170 static u32 tlan_handle_status_check(struct net_device *, u16);
171 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
172
173 static void tlan_timer(unsigned long);
174
175 static void tlan_reset_lists(struct net_device *);
176 static void tlan_free_lists(struct net_device *);
177 static void tlan_print_dio(u16);
178 static void tlan_print_list(struct tlan_list *, char *, int);
179 static void tlan_read_and_clear_stats(struct net_device *, int);
180 static void tlan_reset_adapter(struct net_device *);
181 static void tlan_finish_reset(struct net_device *);
182 static void tlan_set_mac(struct net_device *, int areg, char *mac);
183
184 static void tlan_phy_print(struct net_device *);
185 static void tlan_phy_detect(struct net_device *);
186 static void tlan_phy_power_down(struct net_device *);
187 static void tlan_phy_power_up(struct net_device *);
188 static void tlan_phy_reset(struct net_device *);
189 static void tlan_phy_start_link(struct net_device *);
190 static void tlan_phy_finish_auto_neg(struct net_device *);
191 #ifdef MONITOR
192 static void tlan_phy_monitor(struct net_device *);
193 #endif
194
195 /*
196 static int tlan_phy_nop(struct net_device *);
197 static int tlan_phy_internal_check(struct net_device *);
198 static int tlan_phy_internal_service(struct net_device *);
199 static int tlan_phy_dp83840a_check(struct net_device *);
200 */
201
202 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
203 static void tlan_mii_send_data(u16, u32, unsigned);
204 static void tlan_mii_sync(u16);
205 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
206
207 static void tlan_ee_send_start(u16);
208 static int tlan_ee_send_byte(u16, u8, int);
209 static void tlan_ee_receive_byte(u16, u8 *, int);
210 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
211
212
213 static inline void
214 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
215 {
216 unsigned long addr = (unsigned long)skb;
217 tag->buffer[9].address = addr;
218 tag->buffer[8].address = upper_32_bits(addr);
219 }
220
221 static inline struct sk_buff *
222 tlan_get_skb(const struct tlan_list *tag)
223 {
224 unsigned long addr;
225
226 addr = tag->buffer[9].address;
227 addr |= (tag->buffer[8].address << 16) << 16;
228 return (struct sk_buff *) addr;
229 }
230
231 static u32
232 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
233 NULL,
234 tlan_handle_tx_eof,
235 tlan_handle_stat_overflow,
236 tlan_handle_rx_eof,
237 tlan_handle_dummy,
238 tlan_handle_tx_eoc,
239 tlan_handle_status_check,
240 tlan_handle_rx_eoc
241 };
242
243 static inline void
244 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
245 {
246 struct tlan_priv *priv = netdev_priv(dev);
247 unsigned long flags = 0;
248
249 if (!in_irq())
250 spin_lock_irqsave(&priv->lock, flags);
251 if (priv->timer.function != NULL &&
252 priv->timer_type != TLAN_TIMER_ACTIVITY) {
253 if (!in_irq())
254 spin_unlock_irqrestore(&priv->lock, flags);
255 return;
256 }
257 priv->timer.function = tlan_timer;
258 if (!in_irq())
259 spin_unlock_irqrestore(&priv->lock, flags);
260
261 priv->timer.data = (unsigned long) dev;
262 priv->timer_set_at = jiffies;
263 priv->timer_type = type;
264 mod_timer(&priv->timer, jiffies + ticks);
265
266 }
267
268
269 /*****************************************************************************
270 ******************************************************************************
271
272 ThunderLAN driver primary functions
273
274 these functions are more or less common to all linux network drivers.
275
276 ******************************************************************************
277 *****************************************************************************/
278
279
280
281
282
283 /***************************************************************
284 * tlan_remove_one
285 *
286 * Returns:
287 * Nothing
288 * Parms:
289 * None
290 *
291 * Goes through the TLanDevices list and frees the device
292 * structs and memory associated with each device (lists
293 * and buffers). It also ureserves the IO port regions
294 * associated with this device.
295 *
296 **************************************************************/
297
298
299 static void __devexit tlan_remove_one(struct pci_dev *pdev)
300 {
301 struct net_device *dev = pci_get_drvdata(pdev);
302 struct tlan_priv *priv = netdev_priv(dev);
303
304 unregister_netdev(dev);
305
306 if (priv->dma_storage) {
307 pci_free_consistent(priv->pci_dev,
308 priv->dma_size, priv->dma_storage,
309 priv->dma_storage_dma);
310 }
311
312 #ifdef CONFIG_PCI
313 pci_release_regions(pdev);
314 #endif
315
316 free_netdev(dev);
317
318 pci_set_drvdata(pdev, NULL);
319 }
320
321 static void tlan_start(struct net_device *dev)
322 {
323 tlan_reset_lists(dev);
324 /* NOTE: It might not be necessary to read the stats before a
325 reset if you don't care what the values are.
326 */
327 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
328 tlan_reset_adapter(dev);
329 netif_wake_queue(dev);
330 }
331
332 static void tlan_stop(struct net_device *dev)
333 {
334 struct tlan_priv *priv = netdev_priv(dev);
335
336 tlan_read_and_clear_stats(dev, TLAN_RECORD);
337 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
338 /* Reset and power down phy */
339 tlan_reset_adapter(dev);
340 if (priv->timer.function != NULL) {
341 del_timer_sync(&priv->timer);
342 priv->timer.function = NULL;
343 }
344 }
345
346 #ifdef CONFIG_PM
347
348 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
349 {
350 struct net_device *dev = pci_get_drvdata(pdev);
351
352 if (netif_running(dev))
353 tlan_stop(dev);
354
355 netif_device_detach(dev);
356 pci_save_state(pdev);
357 pci_disable_device(pdev);
358 pci_wake_from_d3(pdev, false);
359 pci_set_power_state(pdev, PCI_D3hot);
360
361 return 0;
362 }
363
364 static int tlan_resume(struct pci_dev *pdev)
365 {
366 struct net_device *dev = pci_get_drvdata(pdev);
367
368 pci_set_power_state(pdev, PCI_D0);
369 pci_restore_state(pdev);
370 pci_enable_wake(pdev, 0, 0);
371 netif_device_attach(dev);
372
373 if (netif_running(dev))
374 tlan_start(dev);
375
376 return 0;
377 }
378
379 #else /* CONFIG_PM */
380
381 #define tlan_suspend NULL
382 #define tlan_resume NULL
383
384 #endif /* CONFIG_PM */
385
386
387 static struct pci_driver tlan_driver = {
388 .name = "tlan",
389 .id_table = tlan_pci_tbl,
390 .probe = tlan_init_one,
391 .remove = __devexit_p(tlan_remove_one),
392 .suspend = tlan_suspend,
393 .resume = tlan_resume,
394 };
395
396 static int __init tlan_probe(void)
397 {
398 int rc = -ENODEV;
399
400 printk(KERN_INFO "%s", tlan_banner);
401
402 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
403
404 /* Use new style PCI probing. Now the kernel will
405 do most of this for us */
406 rc = pci_register_driver(&tlan_driver);
407
408 if (rc != 0) {
409 printk(KERN_ERR "TLAN: Could not register pci driver.\n");
410 goto err_out_pci_free;
411 }
412
413 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
414 tlan_eisa_probe();
415
416 printk(KERN_INFO "TLAN: %d device%s installed, PCI: %d EISA: %d\n",
417 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
418 tlan_have_pci, tlan_have_eisa);
419
420 if (tlan_devices_installed == 0) {
421 rc = -ENODEV;
422 goto err_out_pci_unreg;
423 }
424 return 0;
425
426 err_out_pci_unreg:
427 pci_unregister_driver(&tlan_driver);
428 err_out_pci_free:
429 return rc;
430 }
431
432
433 static int __devinit tlan_init_one(struct pci_dev *pdev,
434 const struct pci_device_id *ent)
435 {
436 return tlan_probe1(pdev, -1, -1, 0, ent);
437 }
438
439
440 /*
441 ***************************************************************
442 * tlan_probe1
443 *
444 * Returns:
445 * 0 on success, error code on error
446 * Parms:
447 * none
448 *
449 * The name is lower case to fit in with all the rest of
450 * the netcard_probe names. This function looks for
451 * another TLan based adapter, setting it up with the
452 * allocated device struct if one is found.
453 * tlan_probe has been ported to the new net API and
454 * now allocates its own device structure. This function
455 * is also used by modules.
456 *
457 **************************************************************/
458
459 static int __devinit tlan_probe1(struct pci_dev *pdev,
460 long ioaddr, int irq, int rev,
461 const struct pci_device_id *ent)
462 {
463
464 struct net_device *dev;
465 struct tlan_priv *priv;
466 u16 device_id;
467 int reg, rc = -ENODEV;
468
469 #ifdef CONFIG_PCI
470 if (pdev) {
471 rc = pci_enable_device(pdev);
472 if (rc)
473 return rc;
474
475 rc = pci_request_regions(pdev, tlan_signature);
476 if (rc) {
477 printk(KERN_ERR "TLAN: Could not reserve IO regions\n");
478 goto err_out;
479 }
480 }
481 #endif /* CONFIG_PCI */
482
483 dev = alloc_etherdev(sizeof(struct tlan_priv));
484 if (dev == NULL) {
485 printk(KERN_ERR "TLAN: Could not allocate memory for device.\n");
486 rc = -ENOMEM;
487 goto err_out_regions;
488 }
489 SET_NETDEV_DEV(dev, &pdev->dev);
490
491 priv = netdev_priv(dev);
492
493 priv->pci_dev = pdev;
494 priv->dev = dev;
495
496 /* Is this a PCI device? */
497 if (pdev) {
498 u32 pci_io_base = 0;
499
500 priv->adapter = &board_info[ent->driver_data];
501
502 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
503 if (rc) {
504 printk(KERN_ERR
505 "TLAN: No suitable PCI mapping available.\n");
506 goto err_out_free_dev;
507 }
508
509 for (reg = 0; reg <= 5; reg++) {
510 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
511 pci_io_base = pci_resource_start(pdev, reg);
512 TLAN_DBG(TLAN_DEBUG_GNRL,
513 "IO mapping is available at %x.\n",
514 pci_io_base);
515 break;
516 }
517 }
518 if (!pci_io_base) {
519 printk(KERN_ERR "TLAN: No IO mappings available\n");
520 rc = -EIO;
521 goto err_out_free_dev;
522 }
523
524 dev->base_addr = pci_io_base;
525 dev->irq = pdev->irq;
526 priv->adapter_rev = pdev->revision;
527 pci_set_master(pdev);
528 pci_set_drvdata(pdev, dev);
529
530 } else { /* EISA card */
531 /* This is a hack. We need to know which board structure
532 * is suited for this adapter */
533 device_id = inw(ioaddr + EISA_ID2);
534 priv->is_eisa = 1;
535 if (device_id == 0x20F1) {
536 priv->adapter = &board_info[13]; /* NetFlex-3/E */
537 priv->adapter_rev = 23; /* TLAN 2.3 */
538 } else {
539 priv->adapter = &board_info[14];
540 priv->adapter_rev = 10; /* TLAN 1.0 */
541 }
542 dev->base_addr = ioaddr;
543 dev->irq = irq;
544 }
545
546 /* Kernel parameters */
547 if (dev->mem_start) {
548 priv->aui = dev->mem_start & 0x01;
549 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
550 : (dev->mem_start & 0x06) >> 1;
551 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
552 : (dev->mem_start & 0x18) >> 3;
553
554 if (priv->speed == 0x1)
555 priv->speed = TLAN_SPEED_10;
556 else if (priv->speed == 0x2)
557 priv->speed = TLAN_SPEED_100;
558
559 debug = priv->debug = dev->mem_end;
560 } else {
561 priv->aui = aui[boards_found];
562 priv->speed = speed[boards_found];
563 priv->duplex = duplex[boards_found];
564 priv->debug = debug;
565 }
566
567 /* This will be used when we get an adapter error from
568 * within our irq handler */
569 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
570
571 spin_lock_init(&priv->lock);
572
573 rc = tlan_init(dev);
574 if (rc) {
575 printk(KERN_ERR "TLAN: Could not set up device.\n");
576 goto err_out_free_dev;
577 }
578
579 rc = register_netdev(dev);
580 if (rc) {
581 printk(KERN_ERR "TLAN: Could not register device.\n");
582 goto err_out_uninit;
583 }
584
585
586 tlan_devices_installed++;
587 boards_found++;
588
589 /* pdev is NULL if this is an EISA device */
590 if (pdev)
591 tlan_have_pci++;
592 else {
593 priv->next_device = tlan_eisa_devices;
594 tlan_eisa_devices = dev;
595 tlan_have_eisa++;
596 }
597
598 printk(KERN_INFO "TLAN: %s irq=%2d, io=%04x, %s, Rev. %d\n",
599 dev->name,
600 (int) dev->irq,
601 (int) dev->base_addr,
602 priv->adapter->device_label,
603 priv->adapter_rev);
604 return 0;
605
606 err_out_uninit:
607 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
608 priv->dma_storage_dma);
609 err_out_free_dev:
610 free_netdev(dev);
611 err_out_regions:
612 #ifdef CONFIG_PCI
613 if (pdev)
614 pci_release_regions(pdev);
615 #endif
616 err_out:
617 if (pdev)
618 pci_disable_device(pdev);
619 return rc;
620 }
621
622
623 static void tlan_eisa_cleanup(void)
624 {
625 struct net_device *dev;
626 struct tlan_priv *priv;
627
628 while (tlan_have_eisa) {
629 dev = tlan_eisa_devices;
630 priv = netdev_priv(dev);
631 if (priv->dma_storage) {
632 pci_free_consistent(priv->pci_dev, priv->dma_size,
633 priv->dma_storage,
634 priv->dma_storage_dma);
635 }
636 release_region(dev->base_addr, 0x10);
637 unregister_netdev(dev);
638 tlan_eisa_devices = priv->next_device;
639 free_netdev(dev);
640 tlan_have_eisa--;
641 }
642 }
643
644
645 static void __exit tlan_exit(void)
646 {
647 pci_unregister_driver(&tlan_driver);
648
649 if (tlan_have_eisa)
650 tlan_eisa_cleanup();
651
652 }
653
654
655 /* Module loading/unloading */
656 module_init(tlan_probe);
657 module_exit(tlan_exit);
658
659
660
661 /**************************************************************
662 * tlan_eisa_probe
663 *
664 * Returns: 0 on success, 1 otherwise
665 *
666 * Parms: None
667 *
668 *
669 * This functions probes for EISA devices and calls
670 * TLan_probe1 when one is found.
671 *
672 *************************************************************/
673
674 static void __init tlan_eisa_probe(void)
675 {
676 long ioaddr;
677 int rc = -ENODEV;
678 int irq;
679 u16 device_id;
680
681 if (!EISA_bus) {
682 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
683 return;
684 }
685
686 /* Loop through all slots of the EISA bus */
687 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
688
689 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
690 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
691 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
692 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
693
694
695 TLAN_DBG(TLAN_DEBUG_PROBE,
696 "Probing for EISA adapter at IO: 0x%4x : ",
697 (int) ioaddr);
698 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
699 goto out;
700
701 if (inw(ioaddr + EISA_ID) != 0x110E) {
702 release_region(ioaddr, 0x10);
703 goto out;
704 }
705
706 device_id = inw(ioaddr + EISA_ID2);
707 if (device_id != 0x20F1 && device_id != 0x40F1) {
708 release_region(ioaddr, 0x10);
709 goto out;
710 }
711
712 /* check if adapter is enabled */
713 if (inb(ioaddr + EISA_CR) != 0x1) {
714 release_region(ioaddr, 0x10);
715 goto out2;
716 }
717
718 if (debug == 0x10)
719 printk(KERN_INFO "Found one\n");
720
721
722 /* Get irq from board */
723 switch (inb(ioaddr + 0xcc0)) {
724 case(0x10):
725 irq = 5;
726 break;
727 case(0x20):
728 irq = 9;
729 break;
730 case(0x40):
731 irq = 10;
732 break;
733 case(0x80):
734 irq = 11;
735 break;
736 default:
737 goto out;
738 }
739
740
741 /* Setup the newly found eisa adapter */
742 rc = tlan_probe1(NULL, ioaddr, irq,
743 12, NULL);
744 continue;
745
746 out:
747 if (debug == 0x10)
748 printk(KERN_INFO "None found\n");
749 continue;
750
751 out2:
752 if (debug == 0x10)
753 printk(KERN_INFO "Card found but it is not enabled, skipping\n");
754 continue;
755
756 }
757
758 }
759
760 #ifdef CONFIG_NET_POLL_CONTROLLER
761 static void tlan_poll(struct net_device *dev)
762 {
763 disable_irq(dev->irq);
764 tlan_handle_interrupt(dev->irq, dev);
765 enable_irq(dev->irq);
766 }
767 #endif
768
769 static const struct net_device_ops tlan_netdev_ops = {
770 .ndo_open = tlan_open,
771 .ndo_stop = tlan_close,
772 .ndo_start_xmit = tlan_start_tx,
773 .ndo_tx_timeout = tlan_tx_timeout,
774 .ndo_get_stats = tlan_get_stats,
775 .ndo_set_multicast_list = tlan_set_multicast_list,
776 .ndo_do_ioctl = tlan_ioctl,
777 .ndo_change_mtu = eth_change_mtu,
778 .ndo_set_mac_address = eth_mac_addr,
779 .ndo_validate_addr = eth_validate_addr,
780 #ifdef CONFIG_NET_POLL_CONTROLLER
781 .ndo_poll_controller = tlan_poll,
782 #endif
783 };
784
785
786
787 /***************************************************************
788 * tlan_init
789 *
790 * Returns:
791 * 0 on success, error code otherwise.
792 * Parms:
793 * dev The structure of the device to be
794 * init'ed.
795 *
796 * This function completes the initialization of the
797 * device structure and driver. It reserves the IO
798 * addresses, allocates memory for the lists and bounce
799 * buffers, retrieves the MAC address from the eeprom
800 * and assignes the device's methods.
801 *
802 **************************************************************/
803
804 static int tlan_init(struct net_device *dev)
805 {
806 int dma_size;
807 int err;
808 int i;
809 struct tlan_priv *priv;
810
811 priv = netdev_priv(dev);
812
813 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
814 * (sizeof(struct tlan_list));
815 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
816 dma_size,
817 &priv->dma_storage_dma);
818 priv->dma_size = dma_size;
819
820 if (priv->dma_storage == NULL) {
821 printk(KERN_ERR
822 "TLAN: Could not allocate lists and buffers for %s.\n",
823 dev->name);
824 return -ENOMEM;
825 }
826 memset(priv->dma_storage, 0, dma_size);
827 priv->rx_list = (struct tlan_list *)
828 ALIGN((unsigned long)priv->dma_storage, 8);
829 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
830 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
831 priv->tx_list_dma =
832 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
833
834 err = 0;
835 for (i = 0; i < 6 ; i++)
836 err |= tlan_ee_read_byte(dev,
837 (u8) priv->adapter->addr_ofs + i,
838 (u8 *) &dev->dev_addr[i]);
839 if (err) {
840 printk(KERN_ERR "TLAN: %s: Error reading MAC from eeprom: %d\n",
841 dev->name,
842 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 pr_err("TLAN: Cannot open %s because IRQ %d is already in use.\n",
887 dev->name, 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 printk(KERN_INFO
1371 "TLAN: 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 printk(KERN_INFO
1526 "TLAN: 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 pr_info("TLAN: Test interrupt on %s.\n", dev->name);
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 pr_info("TLAN: %s: Adaptor Error = 0x%x\n", dev->name, 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 pr_err("TLAN: 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("TLAN: Contents of internal registers for io base 0x%04hx.\n",
2002 io_base);
2003 pr_info("TLAN: 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("TLAN: 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("TLAN: %s List %d at %p\n", type, num, list);
2037 pr_info("TLAN: Forward = 0x%08x\n", list->forward);
2038 pr_info("TLAN: CSTAT = 0x%04hx\n", list->c_stat);
2039 pr_info("TLAN: 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("TLAN: 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 pr_info("TLAN: %s: Link forced.\n", dev->name);
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 pr_info("TLAN: %s: Link active with ", dev->name);
2271 if (!(tlphy_par & TLAN_PHY_AN_EN_STAT)) {
2272 pr_info("forced 10%sMbps %s-Duplex\n",
2273 tlphy_par & TLAN_PHY_SPEED_100
2274 ? "" : "0",
2275 tlphy_par & TLAN_PHY_DUPLEX_FULL
2276 ? "Full" : "Half");
2277 } else {
2278 pr_info("Autonegotiation enabled, at 10%sMbps %s-Duplex\n",
2279 tlphy_par & TLAN_PHY_SPEED_100
2280 ? "" : "0",
2281 tlphy_par & TLAN_PHY_DUPLEX_FULL
2282 ? "Full" : "half");
2283 pr_info("TLAN: Partner capability: ");
2284 for (i = 5; i <= 10; i++)
2285 if (partner & (1<<i))
2286 printk("%s", media[i-5]);
2287 printk("\n");
2288 }
2289
2290 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2291 TLAN_LED_LINK);
2292 #ifdef MONITOR
2293 /* We have link beat..for now anyway */
2294 priv->link = 1;
2295 /*Enabling link beat monitoring */
2296 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2297 #endif
2298 } else if (status & MII_GS_LINK) {
2299 pr_info("TLAN: %s: Link active\n", dev->name);
2300 tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
2301 TLAN_LED_LINK);
2302 }
2303 }
2304
2305 if (priv->phy_num == 0) {
2306 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2307 tlphy_ctl |= TLAN_TC_INTEN;
2308 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2309 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2310 sio |= TLAN_NET_SIO_MINTEN;
2311 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2312 }
2313
2314 if (status & MII_GS_LINK) {
2315 tlan_set_mac(dev, 0, dev->dev_addr);
2316 priv->phy_online = 1;
2317 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2318 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2319 outb((TLAN_HC_REQ_INT >> 8),
2320 dev->base_addr + TLAN_HOST_CMD + 1);
2321 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2322 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2323 netif_carrier_on(dev);
2324 } else {
2325 pr_info("TLAN: %s: Link inactive, will retry in 10 secs...\n",
2326 dev->name);
2327 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2328 return;
2329 }
2330 tlan_set_multicast_list(dev);
2331
2332 }
2333
2334
2335
2336
2337 /***************************************************************
2338 * tlan_set_mac
2339 *
2340 * Returns:
2341 * Nothing
2342 * Parms:
2343 * dev Pointer to device structure of adapter
2344 * on which to change the AREG.
2345 * areg The AREG to set the address in (0 - 3).
2346 * mac A pointer to an array of chars. Each
2347 * element stores one byte of the address.
2348 * IE, it isn't in ascii.
2349 *
2350 * This function transfers a MAC address to one of the
2351 * TLAN AREGs (address registers). The TLAN chip locks
2352 * the register on writing to offset 0 and unlocks the
2353 * register after writing to offset 5. If NULL is passed
2354 * in mac, then the AREG is filled with 0's.
2355 *
2356 **************************************************************/
2357
2358 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2359 {
2360 int i;
2361
2362 areg *= 6;
2363
2364 if (mac != NULL) {
2365 for (i = 0; i < 6; i++)
2366 tlan_dio_write8(dev->base_addr,
2367 TLAN_AREG_0 + areg + i, mac[i]);
2368 } else {
2369 for (i = 0; i < 6; i++)
2370 tlan_dio_write8(dev->base_addr,
2371 TLAN_AREG_0 + areg + i, 0);
2372 }
2373
2374 }
2375
2376
2377
2378
2379 /*****************************************************************************
2380 ******************************************************************************
2381
2382 ThunderLAN driver PHY layer routines
2383
2384 ******************************************************************************
2385 *****************************************************************************/
2386
2387
2388
2389 /*********************************************************************
2390 * tlan_phy_print
2391 *
2392 * Returns:
2393 * Nothing
2394 * Parms:
2395 * dev A pointer to the device structure of the
2396 * TLAN device having the PHYs to be detailed.
2397 *
2398 * This function prints the registers a PHY (aka transceiver).
2399 *
2400 ********************************************************************/
2401
2402 static void tlan_phy_print(struct net_device *dev)
2403 {
2404 struct tlan_priv *priv = netdev_priv(dev);
2405 u16 i, data0, data1, data2, data3, phy;
2406
2407 phy = priv->phy[priv->phy_num];
2408
2409 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2410 pr_info("TLAN: Device %s, Unmanaged PHY.\n", dev->name);
2411 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2412 pr_info("TLAN: Device %s, PHY 0x%02x.\n", dev->name, phy);
2413 pr_info("TLAN: Off. +0 +1 +2 +3\n");
2414 for (i = 0; i < 0x20; i += 4) {
2415 pr_info("TLAN: 0x%02x", i);
2416 tlan_mii_read_reg(dev, phy, i, &data0);
2417 printk(" 0x%04hx", data0);
2418 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2419 printk(" 0x%04hx", data1);
2420 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2421 printk(" 0x%04hx", data2);
2422 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2423 printk(" 0x%04hx\n", data3);
2424 }
2425 } else {
2426 pr_info("TLAN: Device %s, Invalid PHY.\n", dev->name);
2427 }
2428
2429 }
2430
2431
2432
2433
2434 /*********************************************************************
2435 * tlan_phy_detect
2436 *
2437 * Returns:
2438 * Nothing
2439 * Parms:
2440 * dev A pointer to the device structure of the adapter
2441 * for which the PHY needs determined.
2442 *
2443 * So far I've found that adapters which have external PHYs
2444 * may also use the internal PHY for part of the functionality.
2445 * (eg, AUI/Thinnet). This function finds out if this TLAN
2446 * chip has an internal PHY, and then finds the first external
2447 * PHY (starting from address 0) if it exists).
2448 *
2449 ********************************************************************/
2450
2451 static void tlan_phy_detect(struct net_device *dev)
2452 {
2453 struct tlan_priv *priv = netdev_priv(dev);
2454 u16 control;
2455 u16 hi;
2456 u16 lo;
2457 u32 phy;
2458
2459 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2460 priv->phy_num = 0xffff;
2461 return;
2462 }
2463
2464 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2465
2466 if (hi != 0xffff)
2467 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2468 else
2469 priv->phy[0] = TLAN_PHY_NONE;
2470
2471 priv->phy[1] = TLAN_PHY_NONE;
2472 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2473 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2474 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2475 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2476 if ((control != 0xffff) ||
2477 (hi != 0xffff) || (lo != 0xffff)) {
2478 TLAN_DBG(TLAN_DEBUG_GNRL,
2479 "PHY found at %02x %04x %04x %04x\n",
2480 phy, control, hi, lo);
2481 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2482 (phy != TLAN_PHY_MAX_ADDR)) {
2483 priv->phy[1] = phy;
2484 }
2485 }
2486 }
2487
2488 if (priv->phy[1] != TLAN_PHY_NONE)
2489 priv->phy_num = 1;
2490 else if (priv->phy[0] != TLAN_PHY_NONE)
2491 priv->phy_num = 0;
2492 else
2493 pr_info("TLAN: Cannot initialize device, no PHY was found!\n");
2494
2495 }
2496
2497
2498
2499
2500 static void tlan_phy_power_down(struct net_device *dev)
2501 {
2502 struct tlan_priv *priv = netdev_priv(dev);
2503 u16 value;
2504
2505 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2506 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2507 tlan_mii_sync(dev->base_addr);
2508 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2509 if ((priv->phy_num == 0) &&
2510 (priv->phy[1] != TLAN_PHY_NONE) &&
2511 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2512 tlan_mii_sync(dev->base_addr);
2513 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2514 }
2515
2516 /* Wait for 50 ms and powerup
2517 * This is abitrary. It is intended to make sure the
2518 * transceiver settles.
2519 */
2520 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2521
2522 }
2523
2524
2525
2526
2527 static void tlan_phy_power_up(struct net_device *dev)
2528 {
2529 struct tlan_priv *priv = netdev_priv(dev);
2530 u16 value;
2531
2532 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2533 tlan_mii_sync(dev->base_addr);
2534 value = MII_GC_LOOPBK;
2535 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2536 tlan_mii_sync(dev->base_addr);
2537 /* Wait for 500 ms and reset the
2538 * transceiver. The TLAN docs say both 50 ms and
2539 * 500 ms, so do the longer, just in case.
2540 */
2541 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2542
2543 }
2544
2545
2546
2547
2548 static void tlan_phy_reset(struct net_device *dev)
2549 {
2550 struct tlan_priv *priv = netdev_priv(dev);
2551 u16 phy;
2552 u16 value;
2553
2554 phy = priv->phy[priv->phy_num];
2555
2556 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name);
2557 tlan_mii_sync(dev->base_addr);
2558 value = MII_GC_LOOPBK | MII_GC_RESET;
2559 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2560 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2561 while (value & MII_GC_RESET)
2562 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2563
2564 /* Wait for 500 ms and initialize.
2565 * I don't remember why I wait this long.
2566 * I've changed this to 50ms, as it seems long enough.
2567 */
2568 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2569
2570 }
2571
2572
2573
2574
2575 static void tlan_phy_start_link(struct net_device *dev)
2576 {
2577 struct tlan_priv *priv = netdev_priv(dev);
2578 u16 ability;
2579 u16 control;
2580 u16 data;
2581 u16 phy;
2582 u16 status;
2583 u16 tctl;
2584
2585 phy = priv->phy[priv->phy_num];
2586 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2587 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2588 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2589
2590 if ((status & MII_GS_AUTONEG) &&
2591 (!priv->aui)) {
2592 ability = status >> 11;
2593 if (priv->speed == TLAN_SPEED_10 &&
2594 priv->duplex == TLAN_DUPLEX_HALF) {
2595 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2596 } else if (priv->speed == TLAN_SPEED_10 &&
2597 priv->duplex == TLAN_DUPLEX_FULL) {
2598 priv->tlan_full_duplex = true;
2599 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2600 } else if (priv->speed == TLAN_SPEED_100 &&
2601 priv->duplex == TLAN_DUPLEX_HALF) {
2602 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2603 } else if (priv->speed == TLAN_SPEED_100 &&
2604 priv->duplex == TLAN_DUPLEX_FULL) {
2605 priv->tlan_full_duplex = true;
2606 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2607 } else {
2608
2609 /* Set Auto-Neg advertisement */
2610 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2611 (ability << 5) | 1);
2612 /* Enablee Auto-Neg */
2613 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2614 /* Restart Auto-Neg */
2615 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2616 /* Wait for 4 sec for autonegotiation
2617 * to complete. The max spec time is less than this
2618 * but the card need additional time to start AN.
2619 * .5 sec should be plenty extra.
2620 */
2621 pr_info("TLAN: %s: Starting autonegotiation.\n",
2622 dev->name);
2623 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2624 return;
2625 }
2626
2627 }
2628
2629 if ((priv->aui) && (priv->phy_num != 0)) {
2630 priv->phy_num = 0;
2631 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2632 | TLAN_NET_CFG_PHY_EN;
2633 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2634 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2635 return;
2636 } else if (priv->phy_num == 0) {
2637 control = 0;
2638 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2639 if (priv->aui) {
2640 tctl |= TLAN_TC_AUISEL;
2641 } else {
2642 tctl &= ~TLAN_TC_AUISEL;
2643 if (priv->duplex == TLAN_DUPLEX_FULL) {
2644 control |= MII_GC_DUPLEX;
2645 priv->tlan_full_duplex = true;
2646 }
2647 if (priv->speed == TLAN_SPEED_100)
2648 control |= MII_GC_SPEEDSEL;
2649 }
2650 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2651 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2652 }
2653
2654 /* Wait for 2 sec to give the transceiver time
2655 * to establish link.
2656 */
2657 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2658
2659 }
2660
2661
2662
2663
2664 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2665 {
2666 struct tlan_priv *priv = netdev_priv(dev);
2667 u16 an_adv;
2668 u16 an_lpa;
2669 u16 data;
2670 u16 mode;
2671 u16 phy;
2672 u16 status;
2673
2674 phy = priv->phy[priv->phy_num];
2675
2676 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2677 udelay(1000);
2678 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2679
2680 if (!(status & MII_GS_AUTOCMPLT)) {
2681 /* Wait for 8 sec to give the process
2682 * more time. Perhaps we should fail after a while.
2683 */
2684 if (!priv->neg_be_verbose++) {
2685 pr_info("TLAN: Giving autonegotiation more time.\n");
2686 pr_info("TLAN: Please check that your adapter has\n");
2687 pr_info("TLAN: been properly connected to a HUB or Switch.\n");
2688 pr_info("TLAN: Trying to establish link in the background...\n");
2689 }
2690 tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
2691 return;
2692 }
2693
2694 pr_info("TLAN: %s: Autonegotiation complete.\n", dev->name);
2695 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2696 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2697 mode = an_adv & an_lpa & 0x03E0;
2698 if (mode & 0x0100)
2699 priv->tlan_full_duplex = true;
2700 else if (!(mode & 0x0080) && (mode & 0x0040))
2701 priv->tlan_full_duplex = true;
2702
2703 if ((!(mode & 0x0180)) &&
2704 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2705 (priv->phy_num != 0)) {
2706 priv->phy_num = 0;
2707 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2708 | TLAN_NET_CFG_PHY_EN;
2709 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2710 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2711 return;
2712 }
2713
2714 if (priv->phy_num == 0) {
2715 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2716 (an_adv & an_lpa & 0x0040)) {
2717 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2718 MII_GC_AUTOENB | MII_GC_DUPLEX);
2719 pr_info("TLAN: Starting internal PHY with FULL-DUPLEX\n");
2720 } else {
2721 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2722 MII_GC_AUTOENB);
2723 pr_info("TLAN: Starting internal PHY with HALF-DUPLEX\n");
2724 }
2725 }
2726
2727 /* Wait for 100 ms. No reason in partiticular.
2728 */
2729 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2730
2731 }
2732
2733 #ifdef MONITOR
2734
2735 /*********************************************************************
2736 *
2737 * tlan_phy_monitor
2738 *
2739 * Returns:
2740 * None
2741 *
2742 * Params:
2743 * dev The device structure of this device.
2744 *
2745 *
2746 * This function monitors PHY condition by reading the status
2747 * register via the MII bus. This can be used to give info
2748 * about link changes (up/down), and possible switch to alternate
2749 * media.
2750 *
2751 *******************************************************************/
2752
2753 void tlan_phy_monitor(struct net_device *dev)
2754 {
2755 struct tlan_priv *priv = netdev_priv(dev);
2756 u16 phy;
2757 u16 phy_status;
2758
2759 phy = priv->phy[priv->phy_num];
2760
2761 /* Get PHY status register */
2762 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2763
2764 /* Check if link has been lost */
2765 if (!(phy_status & MII_GS_LINK)) {
2766 if (priv->link) {
2767 priv->link = 0;
2768 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2769 dev->name);
2770 netif_carrier_off(dev);
2771 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2772 return;
2773 }
2774 }
2775
2776 /* Link restablished? */
2777 if ((phy_status & MII_GS_LINK) && !priv->link) {
2778 priv->link = 1;
2779 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2780 dev->name);
2781 netif_carrier_on(dev);
2782 }
2783
2784 /* Setup a new monitor */
2785 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2786 }
2787
2788 #endif /* MONITOR */
2789
2790
2791 /*****************************************************************************
2792 ******************************************************************************
2793
2794 ThunderLAN driver MII routines
2795
2796 these routines are based on the information in chap. 2 of the
2797 "ThunderLAN Programmer's Guide", pp. 15-24.
2798
2799 ******************************************************************************
2800 *****************************************************************************/
2801
2802
2803 /***************************************************************
2804 * tlan_mii_read_reg
2805 *
2806 * Returns:
2807 * false if ack received ok
2808 * true if no ack received or other error
2809 *
2810 * Parms:
2811 * dev The device structure containing
2812 * The io address and interrupt count
2813 * for this device.
2814 * phy The address of the PHY to be queried.
2815 * reg The register whose contents are to be
2816 * retrieved.
2817 * val A pointer to a variable to store the
2818 * retrieved value.
2819 *
2820 * This function uses the TLAN's MII bus to retrieve the contents
2821 * of a given register on a PHY. It sends the appropriate info
2822 * and then reads the 16-bit register value from the MII bus via
2823 * the TLAN SIO register.
2824 *
2825 **************************************************************/
2826
2827 static bool
2828 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2829 {
2830 u8 nack;
2831 u16 sio, tmp;
2832 u32 i;
2833 bool err;
2834 int minten;
2835 struct tlan_priv *priv = netdev_priv(dev);
2836 unsigned long flags = 0;
2837
2838 err = false;
2839 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2840 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2841
2842 if (!in_irq())
2843 spin_lock_irqsave(&priv->lock, flags);
2844
2845 tlan_mii_sync(dev->base_addr);
2846
2847 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2848 if (minten)
2849 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2850
2851 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2852 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2853 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2854 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2855
2856
2857 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2858
2859 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2860 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2861 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2862
2863 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2864 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2865 if (nack) { /* no ACK, so fake it */
2866 for (i = 0; i < 16; i++) {
2867 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2868 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2869 }
2870 tmp = 0xffff;
2871 err = true;
2872 } else { /* ACK, so read data */
2873 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2874 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2875 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2876 tmp |= i;
2877 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2878 }
2879 }
2880
2881
2882 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2883 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2884
2885 if (minten)
2886 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2887
2888 *val = tmp;
2889
2890 if (!in_irq())
2891 spin_unlock_irqrestore(&priv->lock, flags);
2892
2893 return err;
2894
2895 }
2896
2897
2898
2899
2900 /***************************************************************
2901 * tlan_mii_send_data
2902 *
2903 * Returns:
2904 * Nothing
2905 * Parms:
2906 * base_port The base IO port of the adapter in
2907 * question.
2908 * dev The address of the PHY to be queried.
2909 * data The value to be placed on the MII bus.
2910 * num_bits The number of bits in data that are to
2911 * be placed on the MII bus.
2912 *
2913 * This function sends on sequence of bits on the MII
2914 * configuration bus.
2915 *
2916 **************************************************************/
2917
2918 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2919 {
2920 u16 sio;
2921 u32 i;
2922
2923 if (num_bits == 0)
2924 return;
2925
2926 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2927 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2928 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2929
2930 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2931 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2932 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2933 if (data & i)
2934 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2935 else
2936 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2937 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2938 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2939 }
2940
2941 }
2942
2943
2944
2945
2946 /***************************************************************
2947 * TLan_MiiSync
2948 *
2949 * Returns:
2950 * Nothing
2951 * Parms:
2952 * base_port The base IO port of the adapter in
2953 * question.
2954 *
2955 * This functions syncs all PHYs in terms of the MII configuration
2956 * bus.
2957 *
2958 **************************************************************/
2959
2960 static void tlan_mii_sync(u16 base_port)
2961 {
2962 int i;
2963 u16 sio;
2964
2965 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2966 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2967
2968 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2969 for (i = 0; i < 32; i++) {
2970 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2971 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2972 }
2973
2974 }
2975
2976
2977
2978
2979 /***************************************************************
2980 * tlan_mii_write_reg
2981 *
2982 * Returns:
2983 * Nothing
2984 * Parms:
2985 * dev The device structure for the device
2986 * to write to.
2987 * phy The address of the PHY to be written to.
2988 * reg The register whose contents are to be
2989 * written.
2990 * val The value to be written to the register.
2991 *
2992 * This function uses the TLAN's MII bus to write the contents of a
2993 * given register on a PHY. It sends the appropriate info and then
2994 * writes the 16-bit register value from the MII configuration bus
2995 * via the TLAN SIO register.
2996 *
2997 **************************************************************/
2998
2999 static void
3000 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3001 {
3002 u16 sio;
3003 int minten;
3004 unsigned long flags = 0;
3005 struct tlan_priv *priv = netdev_priv(dev);
3006
3007 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3008 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3009
3010 if (!in_irq())
3011 spin_lock_irqsave(&priv->lock, flags);
3012
3013 tlan_mii_sync(dev->base_addr);
3014
3015 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3016 if (minten)
3017 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3018
3019 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3020 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3021 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3022 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3023
3024 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3025 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3026
3027 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3028 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3029
3030 if (minten)
3031 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3032
3033 if (!in_irq())
3034 spin_unlock_irqrestore(&priv->lock, flags);
3035
3036 }
3037
3038
3039
3040
3041 /*****************************************************************************
3042 ******************************************************************************
3043
3044 ThunderLAN driver eeprom routines
3045
3046 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3047 EEPROM. these functions are based on information in microchip's
3048 data sheet. I don't know how well this functions will work with
3049 other Eeproms.
3050
3051 ******************************************************************************
3052 *****************************************************************************/
3053
3054
3055 /***************************************************************
3056 * tlan_ee_send_start
3057 *
3058 * Returns:
3059 * Nothing
3060 * Parms:
3061 * io_base The IO port base address for the
3062 * TLAN device with the EEPROM to
3063 * use.
3064 *
3065 * This function sends a start cycle to an EEPROM attached
3066 * to a TLAN chip.
3067 *
3068 **************************************************************/
3069
3070 static void tlan_ee_send_start(u16 io_base)
3071 {
3072 u16 sio;
3073
3074 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3075 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3076
3077 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3078 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3079 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3080 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3081 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3082
3083 }
3084
3085
3086
3087
3088 /***************************************************************
3089 * tlan_ee_send_byte
3090 *
3091 * Returns:
3092 * If the correct ack was received, 0, otherwise 1
3093 * Parms: io_base The IO port base address for the
3094 * TLAN device with the EEPROM to
3095 * use.
3096 * data The 8 bits of information to
3097 * send to the EEPROM.
3098 * stop If TLAN_EEPROM_STOP is passed, a
3099 * stop cycle is sent after the
3100 * byte is sent after the ack is
3101 * read.
3102 *
3103 * This function sends a byte on the serial EEPROM line,
3104 * driving the clock to send each bit. The function then
3105 * reverses transmission direction and reads an acknowledge
3106 * bit.
3107 *
3108 **************************************************************/
3109
3110 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3111 {
3112 int err;
3113 u8 place;
3114 u16 sio;
3115
3116 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3117 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3118
3119 /* Assume clock is low, tx is enabled; */
3120 for (place = 0x80; place != 0; place >>= 1) {
3121 if (place & data)
3122 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3123 else
3124 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3125 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3126 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3127 }
3128 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3129 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3130 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3131 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3132 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3133
3134 if ((!err) && stop) {
3135 /* STOP, raise data while clock is high */
3136 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3137 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3138 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3139 }
3140
3141 return err;
3142
3143 }
3144
3145
3146
3147
3148 /***************************************************************
3149 * tlan_ee_receive_byte
3150 *
3151 * Returns:
3152 * Nothing
3153 * Parms:
3154 * io_base The IO port base address for the
3155 * TLAN device with the EEPROM to
3156 * use.
3157 * data An address to a char to hold the
3158 * data sent from the EEPROM.
3159 * stop If TLAN_EEPROM_STOP is passed, a
3160 * stop cycle is sent after the
3161 * byte is received, and no ack is
3162 * sent.
3163 *
3164 * This function receives 8 bits of data from the EEPROM
3165 * over the serial link. It then sends and ack bit, or no
3166 * ack and a stop bit. This function is used to retrieve
3167 * data after the address of a byte in the EEPROM has been
3168 * sent.
3169 *
3170 **************************************************************/
3171
3172 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3173 {
3174 u8 place;
3175 u16 sio;
3176
3177 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3178 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3179 *data = 0;
3180
3181 /* Assume clock is low, tx is enabled; */
3182 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3183 for (place = 0x80; place; place >>= 1) {
3184 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3185 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3186 *data |= place;
3187 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3188 }
3189
3190 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3191 if (!stop) {
3192 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3193 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3194 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3195 } else {
3196 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3197 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3198 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3199 /* STOP, raise data while clock is high */
3200 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3201 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3202 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3203 }
3204
3205 }
3206
3207
3208
3209
3210 /***************************************************************
3211 * tlan_ee_read_byte
3212 *
3213 * Returns:
3214 * No error = 0, else, the stage at which the error
3215 * occurred.
3216 * Parms:
3217 * io_base The IO port base address for the
3218 * TLAN device with the EEPROM to
3219 * use.
3220 * ee_addr The address of the byte in the
3221 * EEPROM whose contents are to be
3222 * retrieved.
3223 * data An address to a char to hold the
3224 * data obtained from the EEPROM.
3225 *
3226 * This function reads a byte of information from an byte
3227 * cell in the EEPROM.
3228 *
3229 **************************************************************/
3230
3231 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3232 {
3233 int err;
3234 struct tlan_priv *priv = netdev_priv(dev);
3235 unsigned long flags = 0;
3236 int ret = 0;
3237
3238 spin_lock_irqsave(&priv->lock, flags);
3239
3240 tlan_ee_send_start(dev->base_addr);
3241 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3242 if (err) {
3243 ret = 1;
3244 goto fail;
3245 }
3246 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3247 if (err) {
3248 ret = 2;
3249 goto fail;
3250 }
3251 tlan_ee_send_start(dev->base_addr);
3252 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3253 if (err) {
3254 ret = 3;
3255 goto fail;
3256 }
3257 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3258 fail:
3259 spin_unlock_irqrestore(&priv->lock, flags);
3260
3261 return ret;
3262
3263 }
3264
3265
3266
Linux kernel - Deliverables
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