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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / net / ethernet / ti / tlan.c
blob5a4e78fde530ad4ac0984975b950eafa1cb0fde5
1 /*******************************************************************************
2 *
3 * Linux ThunderLAN Driver
4 *
5 * tlan.c
6 * by James Banks
7 *
8 * (C) 1997-1998 Caldera, Inc.
9 * (C) 1998 James Banks
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
12 *
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
15 *
16 ** Useful (if not required) reading:
17 *
18 * Texas Instruments, ThunderLAN Programmer's Guide,
19 * TI Literature Number SPWU013A
20 * available in PDF format from www.ti.com
21 * Level One, LXT901 and LXT970 Data Sheets
22 * available in PDF format from www.level1.com
23 * National Semiconductor, DP83840A Data Sheet
24 * available in PDF format from www.national.com
25 * Microchip Technology, 24C01A/02A/04A Data Sheet
26 * available in PDF format from www.microchip.com
27 *
28 ******************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
46
47 #include "tlan.h"
48
49
50 /* For removing EISA devices */
51 static struct net_device *tlan_eisa_devices;
52
53 static int tlan_devices_installed;
54
55 /* Set speed, duplex and aui settings */
56 static int aui[MAX_TLAN_BOARDS];
57 static int duplex[MAX_TLAN_BOARDS];
58 static int speed[MAX_TLAN_BOARDS];
59 static int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
67
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
71
72 /* Turn on debugging. 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_ACTIVITY_LED |
107 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
108 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
109 TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
110 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
111 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
112 { "Compaq NetFlex-3/E",
113 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
114 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
115 { "Compaq NetFlex-3/E",
116 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
117 };
118
119 static const struct pci_device_id tlan_pci_tbl[] = {
120 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
136 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
142 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
146 { 0,}
147 };
148 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
149
150 static void tlan_eisa_probe(void);
151 static void tlan_eisa_cleanup(void);
152 static int tlan_init(struct net_device *);
153 static int tlan_open(struct net_device *dev);
154 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
155 static irqreturn_t tlan_handle_interrupt(int, void *);
156 static int tlan_close(struct net_device *);
157 static struct net_device_stats *tlan_get_stats(struct net_device *);
158 static void tlan_set_multicast_list(struct net_device *);
159 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
160 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
161 int irq, int rev, const struct pci_device_id *ent);
162 static void tlan_tx_timeout(struct net_device *dev);
163 static void tlan_tx_timeout_work(struct work_struct *work);
164 static int tlan_init_one(struct pci_dev *pdev,
165 const struct pci_device_id *ent);
166
167 static u32 tlan_handle_tx_eof(struct net_device *, u16);
168 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
169 static u32 tlan_handle_rx_eof(struct net_device *, u16);
170 static u32 tlan_handle_dummy(struct net_device *, u16);
171 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
172 static u32 tlan_handle_status_check(struct net_device *, u16);
173 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
174
175 static void tlan_timer(struct timer_list *t);
176 static void tlan_phy_monitor(struct timer_list *t);
177
178 static void tlan_reset_lists(struct net_device *);
179 static void tlan_free_lists(struct net_device *);
180 static void tlan_print_dio(u16);
181 static void tlan_print_list(struct tlan_list *, char *, int);
182 static void tlan_read_and_clear_stats(struct net_device *, int);
183 static void tlan_reset_adapter(struct net_device *);
184 static void tlan_finish_reset(struct net_device *);
185 static void tlan_set_mac(struct net_device *, int areg, char *mac);
186
187 static void tlan_phy_print(struct net_device *);
188 static void tlan_phy_detect(struct net_device *);
189 static void tlan_phy_power_down(struct net_device *);
190 static void tlan_phy_power_up(struct net_device *);
191 static void tlan_phy_reset(struct net_device *);
192 static void tlan_phy_start_link(struct net_device *);
193 static void tlan_phy_finish_auto_neg(struct net_device *);
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 |= ((unsigned long) 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_set_at = jiffies;
262 priv->timer_type = type;
263 mod_timer(&priv->timer, jiffies + ticks);
264
265 }
266
267
268 /*****************************************************************************
269 ******************************************************************************
270
271 ThunderLAN driver primary functions
272
273 these functions are more or less common to all linux network drivers.
274
275 ******************************************************************************
276 *****************************************************************************/
277
278
279
280
281
282 /***************************************************************
283 * tlan_remove_one
284 *
285 * Returns:
286 * Nothing
287 * Parms:
288 * None
289 *
290 * Goes through the TLanDevices list and frees the device
291 * structs and memory associated with each device (lists
292 * and buffers). It also ureserves the IO port regions
293 * associated with this device.
294 *
295 **************************************************************/
296
297
298 static void tlan_remove_one(struct pci_dev *pdev)
299 {
300 struct net_device *dev = pci_get_drvdata(pdev);
301 struct tlan_priv *priv = netdev_priv(dev);
302
303 unregister_netdev(dev);
304
305 if (priv->dma_storage) {
306 pci_free_consistent(priv->pci_dev,
307 priv->dma_size, priv->dma_storage,
308 priv->dma_storage_dma);
309 }
310
311 #ifdef CONFIG_PCI
312 pci_release_regions(pdev);
313 #endif
314
315 free_netdev(dev);
316
317 cancel_work_sync(&priv->tlan_tqueue);
318 }
319
320 static void tlan_start(struct net_device *dev)
321 {
322 tlan_reset_lists(dev);
323 /* NOTE: It might not be necessary to read the stats before a
324 reset if you don't care what the values are.
325 */
326 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
327 tlan_reset_adapter(dev);
328 netif_wake_queue(dev);
329 }
330
331 static void tlan_stop(struct net_device *dev)
332 {
333 struct tlan_priv *priv = netdev_priv(dev);
334
335 del_timer_sync(&priv->media_timer);
336 tlan_read_and_clear_stats(dev, TLAN_RECORD);
337 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
338 /* Reset and power down phy */
339 tlan_reset_adapter(dev);
340 if (priv->timer.function != NULL) {
341 del_timer_sync(&priv->timer);
342 priv->timer.function = NULL;
343 }
344 }
345
346 #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 int rc = pci_enable_device(pdev);
368
369 if (rc)
370 return rc;
371 pci_restore_state(pdev);
372 pci_enable_wake(pdev, PCI_D0, 0);
373 netif_device_attach(dev);
374
375 if (netif_running(dev))
376 tlan_start(dev);
377
378 return 0;
379 }
380
381 #else /* CONFIG_PM */
382
383 #define tlan_suspend NULL
384 #define tlan_resume NULL
385
386 #endif /* CONFIG_PM */
387
388
389 static struct pci_driver tlan_driver = {
390 .name = "tlan",
391 .id_table = tlan_pci_tbl,
392 .probe = tlan_init_one,
393 .remove = tlan_remove_one,
394 .suspend = tlan_suspend,
395 .resume = tlan_resume,
396 };
397
398 static int __init tlan_probe(void)
399 {
400 int rc = -ENODEV;
401
402 pr_info("%s", tlan_banner);
403
404 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
405
406 /* Use new style PCI probing. Now the kernel will
407 do most of this for us */
408 rc = pci_register_driver(&tlan_driver);
409
410 if (rc != 0) {
411 pr_err("Could not register pci driver\n");
412 goto err_out_pci_free;
413 }
414
415 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
416 tlan_eisa_probe();
417
418 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
419 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
420 tlan_have_pci, tlan_have_eisa);
421
422 if (tlan_devices_installed == 0) {
423 rc = -ENODEV;
424 goto err_out_pci_unreg;
425 }
426 return 0;
427
428 err_out_pci_unreg:
429 pci_unregister_driver(&tlan_driver);
430 err_out_pci_free:
431 return rc;
432 }
433
434
435 static int tlan_init_one(struct pci_dev *pdev,
436 const struct pci_device_id *ent)
437 {
438 return tlan_probe1(pdev, -1, -1, 0, ent);
439 }
440
441
442 /*
443 ***************************************************************
444 * tlan_probe1
445 *
446 * Returns:
447 * 0 on success, error code on error
448 * Parms:
449 * none
450 *
451 * The name is lower case to fit in with all the rest of
452 * the netcard_probe names. This function looks for
453 * another TLan based adapter, setting it up with the
454 * allocated device struct if one is found.
455 * tlan_probe has been ported to the new net API and
456 * now allocates its own device structure. This function
457 * is also used by modules.
458 *
459 **************************************************************/
460
461 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
462 const struct pci_device_id *ent)
463 {
464
465 struct net_device *dev;
466 struct tlan_priv *priv;
467 u16 device_id;
468 int reg, rc = -ENODEV;
469
470 #ifdef CONFIG_PCI
471 if (pdev) {
472 rc = pci_enable_device(pdev);
473 if (rc)
474 return rc;
475
476 rc = pci_request_regions(pdev, tlan_signature);
477 if (rc) {
478 pr_err("Could not reserve IO regions\n");
479 goto err_out;
480 }
481 }
482 #endif /* CONFIG_PCI */
483
484 dev = alloc_etherdev(sizeof(struct tlan_priv));
485 if (dev == NULL) {
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 pr_err("No suitable PCI mapping available\n");
505 goto err_out_free_dev;
506 }
507
508 for (reg = 0; reg <= 5; reg++) {
509 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
510 pci_io_base = pci_resource_start(pdev, reg);
511 TLAN_DBG(TLAN_DEBUG_GNRL,
512 "IO mapping is available at %x.\n",
513 pci_io_base);
514 break;
515 }
516 }
517 if (!pci_io_base) {
518 pr_err("No IO mappings available\n");
519 rc = -EIO;
520 goto err_out_free_dev;
521 }
522
523 dev->base_addr = pci_io_base;
524 dev->irq = pdev->irq;
525 priv->adapter_rev = pdev->revision;
526 pci_set_master(pdev);
527 pci_set_drvdata(pdev, dev);
528
529 } else { /* EISA card */
530 /* This is a hack. We need to know which board structure
531 * is suited for this adapter */
532 device_id = inw(ioaddr + EISA_ID2);
533 if (device_id == 0x20F1) {
534 priv->adapter = &board_info[13]; /* NetFlex-3/E */
535 priv->adapter_rev = 23; /* TLAN 2.3 */
536 } else {
537 priv->adapter = &board_info[14];
538 priv->adapter_rev = 10; /* TLAN 1.0 */
539 }
540 dev->base_addr = ioaddr;
541 dev->irq = irq;
542 }
543
544 /* Kernel parameters */
545 if (dev->mem_start) {
546 priv->aui = dev->mem_start & 0x01;
547 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
548 : (dev->mem_start & 0x06) >> 1;
549 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
550 : (dev->mem_start & 0x18) >> 3;
551
552 if (priv->speed == 0x1)
553 priv->speed = TLAN_SPEED_10;
554 else if (priv->speed == 0x2)
555 priv->speed = TLAN_SPEED_100;
556
557 debug = priv->debug = dev->mem_end;
558 } else {
559 priv->aui = aui[boards_found];
560 priv->speed = speed[boards_found];
561 priv->duplex = duplex[boards_found];
562 priv->debug = debug;
563 }
564
565 /* This will be used when we get an adapter error from
566 * within our irq handler */
567 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
568
569 spin_lock_init(&priv->lock);
570
571 rc = tlan_init(dev);
572 if (rc) {
573 pr_err("Could not set up device\n");
574 goto err_out_free_dev;
575 }
576
577 rc = register_netdev(dev);
578 if (rc) {
579 pr_err("Could not register device\n");
580 goto err_out_uninit;
581 }
582
583
584 tlan_devices_installed++;
585 boards_found++;
586
587 /* pdev is NULL if this is an EISA device */
588 if (pdev)
589 tlan_have_pci++;
590 else {
591 priv->next_device = tlan_eisa_devices;
592 tlan_eisa_devices = dev;
593 tlan_have_eisa++;
594 }
595
596 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
597 (int)dev->irq,
598 (int)dev->base_addr,
599 priv->adapter->device_label,
600 priv->adapter_rev);
601 return 0;
602
603 err_out_uninit:
604 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
605 priv->dma_storage_dma);
606 err_out_free_dev:
607 free_netdev(dev);
608 err_out_regions:
609 #ifdef CONFIG_PCI
610 if (pdev)
611 pci_release_regions(pdev);
612 err_out:
613 #endif
614 if (pdev)
615 pci_disable_device(pdev);
616 return rc;
617 }
618
619
620 static void tlan_eisa_cleanup(void)
621 {
622 struct net_device *dev;
623 struct tlan_priv *priv;
624
625 while (tlan_have_eisa) {
626 dev = tlan_eisa_devices;
627 priv = netdev_priv(dev);
628 if (priv->dma_storage) {
629 pci_free_consistent(priv->pci_dev, priv->dma_size,
630 priv->dma_storage,
631 priv->dma_storage_dma);
632 }
633 release_region(dev->base_addr, 0x10);
634 unregister_netdev(dev);
635 tlan_eisa_devices = priv->next_device;
636 free_netdev(dev);
637 tlan_have_eisa--;
638 }
639 }
640
641
642 static void __exit tlan_exit(void)
643 {
644 pci_unregister_driver(&tlan_driver);
645
646 if (tlan_have_eisa)
647 tlan_eisa_cleanup();
648
649 }
650
651
652 /* Module loading/unloading */
653 module_init(tlan_probe);
654 module_exit(tlan_exit);
655
656
657
658 /**************************************************************
659 * tlan_eisa_probe
660 *
661 * Returns: 0 on success, 1 otherwise
662 *
663 * Parms: None
664 *
665 *
666 * This functions probes for EISA devices and calls
667 * TLan_probe1 when one is found.
668 *
669 *************************************************************/
670
671 static void __init tlan_eisa_probe(void)
672 {
673 long ioaddr;
674 int rc = -ENODEV;
675 int irq;
676 u16 device_id;
677
678 if (!EISA_bus) {
679 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
680 return;
681 }
682
683 /* Loop through all slots of the EISA bus */
684 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
685
686 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
687 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
688 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
689 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
690
691
692 TLAN_DBG(TLAN_DEBUG_PROBE,
693 "Probing for EISA adapter at IO: 0x%4x : ",
694 (int) ioaddr);
695 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
696 goto out;
697
698 if (inw(ioaddr + EISA_ID) != 0x110E) {
699 release_region(ioaddr, 0x10);
700 goto out;
701 }
702
703 device_id = inw(ioaddr + EISA_ID2);
704 if (device_id != 0x20F1 && device_id != 0x40F1) {
705 release_region(ioaddr, 0x10);
706 goto out;
707 }
708
709 /* check if adapter is enabled */
710 if (inb(ioaddr + EISA_CR) != 0x1) {
711 release_region(ioaddr, 0x10);
712 goto out2;
713 }
714
715 if (debug == 0x10)
716 pr_info("Found one\n");
717
718
719 /* Get irq from board */
720 switch (inb(ioaddr + 0xcc0)) {
721 case(0x10):
722 irq = 5;
723 break;
724 case(0x20):
725 irq = 9;
726 break;
727 case(0x40):
728 irq = 10;
729 break;
730 case(0x80):
731 irq = 11;
732 break;
733 default:
734 goto out;
735 }
736
737
738 /* Setup the newly found eisa adapter */
739 rc = tlan_probe1(NULL, ioaddr, irq,
740 12, NULL);
741 continue;
742
743 out:
744 if (debug == 0x10)
745 pr_info("None found\n");
746 continue;
747
748 out2:
749 if (debug == 0x10)
750 pr_info("Card found but it is not enabled, skipping\n");
751 continue;
752
753 }
754
755 }
756
757 #ifdef CONFIG_NET_POLL_CONTROLLER
758 static void tlan_poll(struct net_device *dev)
759 {
760 disable_irq(dev->irq);
761 tlan_handle_interrupt(dev->irq, dev);
762 enable_irq(dev->irq);
763 }
764 #endif
765
766 static const struct net_device_ops tlan_netdev_ops = {
767 .ndo_open = tlan_open,
768 .ndo_stop = tlan_close,
769 .ndo_start_xmit = tlan_start_tx,
770 .ndo_tx_timeout = tlan_tx_timeout,
771 .ndo_get_stats = tlan_get_stats,
772 .ndo_set_rx_mode = tlan_set_multicast_list,
773 .ndo_do_ioctl = tlan_ioctl,
774 .ndo_set_mac_address = eth_mac_addr,
775 .ndo_validate_addr = eth_validate_addr,
776 #ifdef CONFIG_NET_POLL_CONTROLLER
777 .ndo_poll_controller = tlan_poll,
778 #endif
779 };
780
781 static void tlan_get_drvinfo(struct net_device *dev,
782 struct ethtool_drvinfo *info)
783 {
784 struct tlan_priv *priv = netdev_priv(dev);
785
786 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
787 if (priv->pci_dev)
788 strlcpy(info->bus_info, pci_name(priv->pci_dev),
789 sizeof(info->bus_info));
790 else
791 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
792 }
793
794 static int tlan_get_eeprom_len(struct net_device *dev)
795 {
796 return TLAN_EEPROM_SIZE;
797 }
798
799 static int tlan_get_eeprom(struct net_device *dev,
800 struct ethtool_eeprom *eeprom, u8 *data)
801 {
802 int i;
803
804 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
805 if (tlan_ee_read_byte(dev, i, &data[i]))
806 return -EIO;
807
808 return 0;
809 }
810
811 static const struct ethtool_ops tlan_ethtool_ops = {
812 .get_drvinfo = tlan_get_drvinfo,
813 .get_link = ethtool_op_get_link,
814 .get_eeprom_len = tlan_get_eeprom_len,
815 .get_eeprom = tlan_get_eeprom,
816 };
817
818 /***************************************************************
819 * tlan_init
820 *
821 * Returns:
822 * 0 on success, error code otherwise.
823 * Parms:
824 * dev The structure of the device to be
825 * init'ed.
826 *
827 * This function completes the initialization of the
828 * device structure and driver. It reserves the IO
829 * addresses, allocates memory for the lists and bounce
830 * buffers, retrieves the MAC address from the eeprom
831 * and assignes the device's methods.
832 *
833 **************************************************************/
834
835 static int tlan_init(struct net_device *dev)
836 {
837 int dma_size;
838 int err;
839 int i;
840 struct tlan_priv *priv;
841
842 priv = netdev_priv(dev);
843
844 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
845 * (sizeof(struct tlan_list));
846 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
847 dma_size,
848 &priv->dma_storage_dma);
849 priv->dma_size = dma_size;
850
851 if (priv->dma_storage == NULL) {
852 pr_err("Could not allocate lists and buffers for %s\n",
853 dev->name);
854 return -ENOMEM;
855 }
856 memset(priv->dma_storage, 0, dma_size);
857 priv->rx_list = (struct tlan_list *)
858 ALIGN((unsigned long)priv->dma_storage, 8);
859 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
860 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
861 priv->tx_list_dma =
862 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
863
864 err = 0;
865 for (i = 0; i < ETH_ALEN; i++)
866 err |= tlan_ee_read_byte(dev,
867 (u8) priv->adapter->addr_ofs + i,
868 (u8 *) &dev->dev_addr[i]);
869 if (err) {
870 pr_err("%s: Error reading MAC from eeprom: %d\n",
871 dev->name, err);
872 }
873 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
874 if (priv->adapter->addr_ofs == 0xf8) {
875 for (i = 0; i < ETH_ALEN; i += 2) {
876 char tmp = dev->dev_addr[i];
877 dev->dev_addr[i] = dev->dev_addr[i + 1];
878 dev->dev_addr[i + 1] = tmp;
879 }
880 }
881
882 netif_carrier_off(dev);
883
884 /* Device methods */
885 dev->netdev_ops = &tlan_netdev_ops;
886 dev->ethtool_ops = &tlan_ethtool_ops;
887 dev->watchdog_timeo = TX_TIMEOUT;
888
889 return 0;
890
891 }
892
893
894
895
896 /***************************************************************
897 * tlan_open
898 *
899 * Returns:
900 * 0 on success, error code otherwise.
901 * Parms:
902 * dev Structure of device to be opened.
903 *
904 * This routine puts the driver and TLAN adapter in a
905 * state where it is ready to send and receive packets.
906 * It allocates the IRQ, resets and brings the adapter
907 * out of reset, and allows interrupts. It also delays
908 * the startup for autonegotiation or sends a Rx GO
909 * command to the adapter, as appropriate.
910 *
911 **************************************************************/
912
913 static int tlan_open(struct net_device *dev)
914 {
915 struct tlan_priv *priv = netdev_priv(dev);
916 int err;
917
918 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
919 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
920 dev->name, dev);
921
922 if (err) {
923 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
924 dev->irq);
925 return err;
926 }
927
928 timer_setup(&priv->timer, NULL, 0);
929 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
930
931 tlan_start(dev);
932
933 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
934 dev->name, priv->tlan_rev);
935
936 return 0;
937
938 }
939
940
941
942 /**************************************************************
943 * tlan_ioctl
944 *
945 * Returns:
946 * 0 on success, error code otherwise
947 * Params:
948 * dev structure of device to receive ioctl.
949 *
950 * rq ifreq structure to hold userspace data.
951 *
952 * cmd ioctl command.
953 *
954 *
955 *************************************************************/
956
957 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
958 {
959 struct tlan_priv *priv = netdev_priv(dev);
960 struct mii_ioctl_data *data = if_mii(rq);
961 u32 phy = priv->phy[priv->phy_num];
962
963 if (!priv->phy_online)
964 return -EAGAIN;
965
966 switch (cmd) {
967 case SIOCGMIIPHY: /* get address of MII PHY in use. */
968 data->phy_id = phy;
969
970
971 case SIOCGMIIREG: /* read MII PHY register. */
972 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
973 data->reg_num & 0x1f, &data->val_out);
974 return 0;
975
976
977 case SIOCSMIIREG: /* write MII PHY register. */
978 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
979 data->reg_num & 0x1f, data->val_in);
980 return 0;
981 default:
982 return -EOPNOTSUPP;
983 }
984 }
985
986
987 /***************************************************************
988 * tlan_tx_timeout
989 *
990 * Returns: nothing
991 *
992 * Params:
993 * dev structure of device which timed out
994 * during transmit.
995 *
996 **************************************************************/
997
998 static void tlan_tx_timeout(struct net_device *dev)
999 {
1000
1001 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1002
1003 /* Ok so we timed out, lets see what we can do about it...*/
1004 tlan_free_lists(dev);
1005 tlan_reset_lists(dev);
1006 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1007 tlan_reset_adapter(dev);
1008 netif_trans_update(dev); /* prevent tx timeout */
1009 netif_wake_queue(dev);
1010
1011 }
1012
1013
1014 /***************************************************************
1015 * tlan_tx_timeout_work
1016 *
1017 * Returns: nothing
1018 *
1019 * Params:
1020 * work work item of device which timed out
1021 *
1022 **************************************************************/
1023
1024 static void tlan_tx_timeout_work(struct work_struct *work)
1025 {
1026 struct tlan_priv *priv =
1027 container_of(work, struct tlan_priv, tlan_tqueue);
1028
1029 tlan_tx_timeout(priv->dev);
1030 }
1031
1032
1033
1034 /***************************************************************
1035 * tlan_start_tx
1036 *
1037 * Returns:
1038 * 0 on success, non-zero on failure.
1039 * Parms:
1040 * skb A pointer to the sk_buff containing the
1041 * frame to be sent.
1042 * dev The device to send the data on.
1043 *
1044 * This function adds a frame to the Tx list to be sent
1045 * ASAP. First it verifies that the adapter is ready and
1046 * there is room in the queue. Then it sets up the next
1047 * available list, copies the frame to the corresponding
1048 * buffer. If the adapter Tx channel is idle, it gives
1049 * the adapter a Tx Go command on the list, otherwise it
1050 * sets the forward address of the previous list to point
1051 * to this one. Then it frees the sk_buff.
1052 *
1053 **************************************************************/
1054
1055 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1056 {
1057 struct tlan_priv *priv = netdev_priv(dev);
1058 dma_addr_t tail_list_phys;
1059 struct tlan_list *tail_list;
1060 unsigned long flags;
1061 unsigned int txlen;
1062
1063 if (!priv->phy_online) {
1064 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1065 dev->name);
1066 dev_kfree_skb_any(skb);
1067 return NETDEV_TX_OK;
1068 }
1069
1070 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1071 return NETDEV_TX_OK;
1072 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1073
1074 tail_list = priv->tx_list + priv->tx_tail;
1075 tail_list_phys =
1076 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1077
1078 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1079 TLAN_DBG(TLAN_DEBUG_TX,
1080 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1081 dev->name, priv->tx_head, priv->tx_tail);
1082 netif_stop_queue(dev);
1083 priv->tx_busy_count++;
1084 return NETDEV_TX_BUSY;
1085 }
1086
1087 tail_list->forward = 0;
1088
1089 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1090 skb->data, txlen,
1091 PCI_DMA_TODEVICE);
1092 tlan_store_skb(tail_list, skb);
1093
1094 tail_list->frame_size = (u16) txlen;
1095 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1096 tail_list->buffer[1].count = 0;
1097 tail_list->buffer[1].address = 0;
1098
1099 spin_lock_irqsave(&priv->lock, flags);
1100 tail_list->c_stat = TLAN_CSTAT_READY;
1101 if (!priv->tx_in_progress) {
1102 priv->tx_in_progress = 1;
1103 TLAN_DBG(TLAN_DEBUG_TX,
1104 "TRANSMIT: Starting TX on buffer %d\n",
1105 priv->tx_tail);
1106 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1107 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1108 } else {
1109 TLAN_DBG(TLAN_DEBUG_TX,
1110 "TRANSMIT: Adding buffer %d to TX channel\n",
1111 priv->tx_tail);
1112 if (priv->tx_tail == 0) {
1113 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1114 = tail_list_phys;
1115 } else {
1116 (priv->tx_list + (priv->tx_tail - 1))->forward
1117 = tail_list_phys;
1118 }
1119 }
1120 spin_unlock_irqrestore(&priv->lock, flags);
1121
1122 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1123
1124 return NETDEV_TX_OK;
1125
1126 }
1127
1128
1129
1130
1131 /***************************************************************
1132 * tlan_handle_interrupt
1133 *
1134 * Returns:
1135 * Nothing
1136 * Parms:
1137 * irq The line on which the interrupt
1138 * occurred.
1139 * dev_id A pointer to the device assigned to
1140 * this irq line.
1141 *
1142 * This function handles an interrupt generated by its
1143 * assigned TLAN adapter. The function deactivates
1144 * interrupts on its adapter, records the type of
1145 * interrupt, executes the appropriate subhandler, and
1146 * acknowdges the interrupt to the adapter (thus
1147 * re-enabling adapter interrupts.
1148 *
1149 **************************************************************/
1150
1151 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1152 {
1153 struct net_device *dev = dev_id;
1154 struct tlan_priv *priv = netdev_priv(dev);
1155 u16 host_int;
1156 u16 type;
1157
1158 spin_lock(&priv->lock);
1159
1160 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1161 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1162 if (type) {
1163 u32 ack;
1164 u32 host_cmd;
1165
1166 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1167 ack = tlan_int_vector[type](dev, host_int);
1168
1169 if (ack) {
1170 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1171 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1172 }
1173 }
1174
1175 spin_unlock(&priv->lock);
1176
1177 return IRQ_RETVAL(type);
1178 }
1179
1180
1181
1182
1183 /***************************************************************
1184 * tlan_close
1185 *
1186 * Returns:
1187 * An error code.
1188 * Parms:
1189 * dev The device structure of the device to
1190 * close.
1191 *
1192 * This function shuts down the adapter. It records any
1193 * stats, puts the adapter into reset state, deactivates
1194 * its time as needed, and frees the irq it is using.
1195 *
1196 **************************************************************/
1197
1198 static int tlan_close(struct net_device *dev)
1199 {
1200 tlan_stop(dev);
1201
1202 free_irq(dev->irq, dev);
1203 tlan_free_lists(dev);
1204 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1205
1206 return 0;
1207
1208 }
1209
1210
1211
1212
1213 /***************************************************************
1214 * tlan_get_stats
1215 *
1216 * Returns:
1217 * A pointer to the device's statistics structure.
1218 * Parms:
1219 * dev The device structure to return the
1220 * stats for.
1221 *
1222 * This function updates the devices statistics by reading
1223 * the TLAN chip's onboard registers. Then it returns the
1224 * address of the statistics structure.
1225 *
1226 **************************************************************/
1227
1228 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1229 {
1230 struct tlan_priv *priv = netdev_priv(dev);
1231 int i;
1232
1233 /* Should only read stats if open ? */
1234 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1235
1236 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1237 priv->rx_eoc_count);
1238 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1239 priv->tx_busy_count);
1240 if (debug & TLAN_DEBUG_GNRL) {
1241 tlan_print_dio(dev->base_addr);
1242 tlan_phy_print(dev);
1243 }
1244 if (debug & TLAN_DEBUG_LIST) {
1245 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1246 tlan_print_list(priv->rx_list + i, "RX", i);
1247 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1248 tlan_print_list(priv->tx_list + i, "TX", i);
1249 }
1250
1251 return &dev->stats;
1252
1253 }
1254
1255
1256
1257
1258 /***************************************************************
1259 * tlan_set_multicast_list
1260 *
1261 * Returns:
1262 * Nothing
1263 * Parms:
1264 * dev The device structure to set the
1265 * multicast list for.
1266 *
1267 * This function sets the TLAN adaptor to various receive
1268 * modes. If the IFF_PROMISC flag is set, promiscuous
1269 * mode is acitviated. Otherwise, promiscuous mode is
1270 * turned off. If the IFF_ALLMULTI flag is set, then
1271 * the hash table is set to receive all group addresses.
1272 * Otherwise, the first three multicast addresses are
1273 * stored in AREG_1-3, and the rest are selected via the
1274 * hash table, as necessary.
1275 *
1276 **************************************************************/
1277
1278 static void tlan_set_multicast_list(struct net_device *dev)
1279 {
1280 struct netdev_hw_addr *ha;
1281 u32 hash1 = 0;
1282 u32 hash2 = 0;
1283 int i;
1284 u32 offset;
1285 u8 tmp;
1286
1287 if (dev->flags & IFF_PROMISC) {
1288 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1289 tlan_dio_write8(dev->base_addr,
1290 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1291 } else {
1292 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1293 tlan_dio_write8(dev->base_addr,
1294 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1295 if (dev->flags & IFF_ALLMULTI) {
1296 for (i = 0; i < 3; i++)
1297 tlan_set_mac(dev, i + 1, NULL);
1298 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1299 0xffffffff);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1301 0xffffffff);
1302 } else {
1303 i = 0;
1304 netdev_for_each_mc_addr(ha, dev) {
1305 if (i < 3) {
1306 tlan_set_mac(dev, i + 1,
1307 (char *) &ha->addr);
1308 } else {
1309 offset =
1310 tlan_hash_func((u8 *)&ha->addr);
1311 if (offset < 32)
1312 hash1 |= (1 << offset);
1313 else
1314 hash2 |= (1 << (offset - 32));
1315 }
1316 i++;
1317 }
1318 for ( ; i < 3; i++)
1319 tlan_set_mac(dev, i + 1, NULL);
1320 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1321 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1322 }
1323 }
1324
1325 }
1326
1327
1328
1329 /*****************************************************************************
1330 ******************************************************************************
1331
1332 ThunderLAN driver interrupt vectors and table
1333
1334 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1335 Programmer's Guide" for more informations on handling interrupts
1336 generated by TLAN based adapters.
1337
1338 ******************************************************************************
1339 *****************************************************************************/
1340
1341
1342
1343
1344 /***************************************************************
1345 * tlan_handle_tx_eof
1346 *
1347 * Returns:
1348 * 1
1349 * Parms:
1350 * dev Device assigned the IRQ that was
1351 * raised.
1352 * host_int The contents of the HOST_INT
1353 * port.
1354 *
1355 * This function handles Tx EOF interrupts which are raised
1356 * by the adapter when it has completed sending the
1357 * contents of a buffer. If detemines which list/buffer
1358 * was completed and resets it. If the buffer was the last
1359 * in the channel (EOC), then the function checks to see if
1360 * another buffer is ready to send, and if so, sends a Tx
1361 * Go command. Finally, the driver activates/continues the
1362 * activity LED.
1363 *
1364 **************************************************************/
1365
1366 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1367 {
1368 struct tlan_priv *priv = netdev_priv(dev);
1369 int eoc = 0;
1370 struct tlan_list *head_list;
1371 dma_addr_t head_list_phys;
1372 u32 ack = 0;
1373 u16 tmp_c_stat;
1374
1375 TLAN_DBG(TLAN_DEBUG_TX,
1376 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1377 priv->tx_head, priv->tx_tail);
1378 head_list = priv->tx_list + priv->tx_head;
1379
1380 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1381 && (ack < 255)) {
1382 struct sk_buff *skb = tlan_get_skb(head_list);
1383
1384 ack++;
1385 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1386 max(skb->len,
1387 (unsigned int)TLAN_MIN_FRAME_SIZE),
1388 PCI_DMA_TODEVICE);
1389 dev_kfree_skb_any(skb);
1390 head_list->buffer[8].address = 0;
1391 head_list->buffer[9].address = 0;
1392
1393 if (tmp_c_stat & TLAN_CSTAT_EOC)
1394 eoc = 1;
1395
1396 dev->stats.tx_bytes += head_list->frame_size;
1397
1398 head_list->c_stat = TLAN_CSTAT_UNUSED;
1399 netif_start_queue(dev);
1400 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1401 head_list = priv->tx_list + priv->tx_head;
1402 }
1403
1404 if (!ack)
1405 netdev_info(dev,
1406 "Received interrupt for uncompleted TX frame\n");
1407
1408 if (eoc) {
1409 TLAN_DBG(TLAN_DEBUG_TX,
1410 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1411 priv->tx_head, priv->tx_tail);
1412 head_list = priv->tx_list + priv->tx_head;
1413 head_list_phys = priv->tx_list_dma
1414 + sizeof(struct tlan_list)*priv->tx_head;
1415 if ((head_list->c_stat & TLAN_CSTAT_READY)
1416 == TLAN_CSTAT_READY) {
1417 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1418 ack |= TLAN_HC_GO;
1419 } else {
1420 priv->tx_in_progress = 0;
1421 }
1422 }
1423
1424 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1425 tlan_dio_write8(dev->base_addr,
1426 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1427 if (priv->timer.function == NULL) {
1428 priv->timer.function = tlan_timer;
1429 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1430 priv->timer_set_at = jiffies;
1431 priv->timer_type = TLAN_TIMER_ACTIVITY;
1432 add_timer(&priv->timer);
1433 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1434 priv->timer_set_at = jiffies;
1435 }
1436 }
1437
1438 return ack;
1439
1440 }
1441
1442
1443
1444
1445 /***************************************************************
1446 * TLan_HandleStatOverflow
1447 *
1448 * Returns:
1449 * 1
1450 * Parms:
1451 * dev Device assigned the IRQ that was
1452 * raised.
1453 * host_int The contents of the HOST_INT
1454 * port.
1455 *
1456 * This function handles the Statistics Overflow interrupt
1457 * which means that one or more of the TLAN statistics
1458 * registers has reached 1/2 capacity and needs to be read.
1459 *
1460 **************************************************************/
1461
1462 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1463 {
1464 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1465
1466 return 1;
1467
1468 }
1469
1470
1471
1472
1473 /***************************************************************
1474 * TLan_HandleRxEOF
1475 *
1476 * Returns:
1477 * 1
1478 * Parms:
1479 * dev Device assigned the IRQ that was
1480 * raised.
1481 * host_int The contents of the HOST_INT
1482 * port.
1483 *
1484 * This function handles the Rx EOF interrupt which
1485 * indicates a frame has been received by the adapter from
1486 * the net and the frame has been transferred to memory.
1487 * The function determines the bounce buffer the frame has
1488 * been loaded into, creates a new sk_buff big enough to
1489 * hold the frame, and sends it to protocol stack. It
1490 * then resets the used buffer and appends it to the end
1491 * of the list. If the frame was the last in the Rx
1492 * channel (EOC), the function restarts the receive channel
1493 * by sending an Rx Go command to the adapter. Then it
1494 * activates/continues the activity LED.
1495 *
1496 **************************************************************/
1497
1498 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1499 {
1500 struct tlan_priv *priv = netdev_priv(dev);
1501 u32 ack = 0;
1502 int eoc = 0;
1503 struct tlan_list *head_list;
1504 struct sk_buff *skb;
1505 struct tlan_list *tail_list;
1506 u16 tmp_c_stat;
1507 dma_addr_t head_list_phys;
1508
1509 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1510 priv->rx_head, priv->rx_tail);
1511 head_list = priv->rx_list + priv->rx_head;
1512 head_list_phys =
1513 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1514
1515 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1516 && (ack < 255)) {
1517 dma_addr_t frame_dma = head_list->buffer[0].address;
1518 u32 frame_size = head_list->frame_size;
1519 struct sk_buff *new_skb;
1520
1521 ack++;
1522 if (tmp_c_stat & TLAN_CSTAT_EOC)
1523 eoc = 1;
1524
1525 new_skb = netdev_alloc_skb_ip_align(dev,
1526 TLAN_MAX_FRAME_SIZE + 5);
1527 if (!new_skb)
1528 goto drop_and_reuse;
1529
1530 skb = tlan_get_skb(head_list);
1531 pci_unmap_single(priv->pci_dev, frame_dma,
1532 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1533 skb_put(skb, frame_size);
1534
1535 dev->stats.rx_bytes += frame_size;
1536
1537 skb->protocol = eth_type_trans(skb, dev);
1538 netif_rx(skb);
1539
1540 head_list->buffer[0].address =
1541 pci_map_single(priv->pci_dev, new_skb->data,
1542 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1543
1544 tlan_store_skb(head_list, new_skb);
1545 drop_and_reuse:
1546 head_list->forward = 0;
1547 head_list->c_stat = 0;
1548 tail_list = priv->rx_list + priv->rx_tail;
1549 tail_list->forward = head_list_phys;
1550
1551 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1552 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1553 head_list = priv->rx_list + priv->rx_head;
1554 head_list_phys = priv->rx_list_dma
1555 + sizeof(struct tlan_list)*priv->rx_head;
1556 }
1557
1558 if (!ack)
1559 netdev_info(dev,
1560 "Received interrupt for uncompleted RX frame\n");
1561
1562
1563 if (eoc) {
1564 TLAN_DBG(TLAN_DEBUG_RX,
1565 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1566 priv->rx_head, priv->rx_tail);
1567 head_list = priv->rx_list + priv->rx_head;
1568 head_list_phys = priv->rx_list_dma
1569 + sizeof(struct tlan_list)*priv->rx_head;
1570 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1571 ack |= TLAN_HC_GO | TLAN_HC_RT;
1572 priv->rx_eoc_count++;
1573 }
1574
1575 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1576 tlan_dio_write8(dev->base_addr,
1577 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1578 if (priv->timer.function == NULL) {
1579 priv->timer.function = tlan_timer;
1580 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1581 priv->timer_set_at = jiffies;
1582 priv->timer_type = TLAN_TIMER_ACTIVITY;
1583 add_timer(&priv->timer);
1584 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1585 priv->timer_set_at = jiffies;
1586 }
1587 }
1588
1589 return ack;
1590
1591 }
1592
1593
1594
1595
1596 /***************************************************************
1597 * tlan_handle_dummy
1598 *
1599 * Returns:
1600 * 1
1601 * Parms:
1602 * dev Device assigned the IRQ that was
1603 * raised.
1604 * host_int The contents of the HOST_INT
1605 * port.
1606 *
1607 * This function handles the Dummy interrupt, which is
1608 * raised whenever a test interrupt is generated by setting
1609 * the Req_Int bit of HOST_CMD to 1.
1610 *
1611 **************************************************************/
1612
1613 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1614 {
1615 netdev_info(dev, "Test interrupt\n");
1616 return 1;
1617
1618 }
1619
1620
1621
1622
1623 /***************************************************************
1624 * tlan_handle_tx_eoc
1625 *
1626 * Returns:
1627 * 1
1628 * Parms:
1629 * dev Device assigned the IRQ that was
1630 * raised.
1631 * host_int The contents of the HOST_INT
1632 * port.
1633 *
1634 * This driver is structured to determine EOC occurrences by
1635 * reading the CSTAT member of the list structure. Tx EOC
1636 * interrupts are disabled via the DIO INTDIS register.
1637 * However, TLAN chips before revision 3.0 didn't have this
1638 * functionality, so process EOC events if this is the
1639 * case.
1640 *
1641 **************************************************************/
1642
1643 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1644 {
1645 struct tlan_priv *priv = netdev_priv(dev);
1646 struct tlan_list *head_list;
1647 dma_addr_t head_list_phys;
1648 u32 ack = 1;
1649
1650 if (priv->tlan_rev < 0x30) {
1651 TLAN_DBG(TLAN_DEBUG_TX,
1652 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1653 priv->tx_head, priv->tx_tail);
1654 head_list = priv->tx_list + priv->tx_head;
1655 head_list_phys = priv->tx_list_dma
1656 + sizeof(struct tlan_list)*priv->tx_head;
1657 if ((head_list->c_stat & TLAN_CSTAT_READY)
1658 == TLAN_CSTAT_READY) {
1659 netif_stop_queue(dev);
1660 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1661 ack |= TLAN_HC_GO;
1662 } else {
1663 priv->tx_in_progress = 0;
1664 }
1665 }
1666
1667 return ack;
1668
1669 }
1670
1671
1672
1673
1674 /***************************************************************
1675 * tlan_handle_status_check
1676 *
1677 * Returns:
1678 * 0 if Adapter check, 1 if Network Status check.
1679 * Parms:
1680 * dev Device assigned the IRQ that was
1681 * raised.
1682 * host_int The contents of the HOST_INT
1683 * port.
1684 *
1685 * This function handles Adapter Check/Network Status
1686 * interrupts generated by the adapter. It checks the
1687 * vector in the HOST_INT register to determine if it is
1688 * an Adapter Check interrupt. If so, it resets the
1689 * adapter. Otherwise it clears the status registers
1690 * and services the PHY.
1691 *
1692 **************************************************************/
1693
1694 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1695 {
1696 struct tlan_priv *priv = netdev_priv(dev);
1697 u32 ack;
1698 u32 error;
1699 u8 net_sts;
1700 u32 phy;
1701 u16 tlphy_ctl;
1702 u16 tlphy_sts;
1703
1704 ack = 1;
1705 if (host_int & TLAN_HI_IV_MASK) {
1706 netif_stop_queue(dev);
1707 error = inl(dev->base_addr + TLAN_CH_PARM);
1708 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1709 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1710 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1711
1712 schedule_work(&priv->tlan_tqueue);
1713
1714 netif_wake_queue(dev);
1715 ack = 0;
1716 } else {
1717 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1718 phy = priv->phy[priv->phy_num];
1719
1720 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1721 if (net_sts) {
1722 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1723 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1724 dev->name, (unsigned) net_sts);
1725 }
1726 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1727 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1728 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1729 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1730 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1731 tlphy_ctl |= TLAN_TC_SWAPOL;
1732 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1733 tlphy_ctl);
1734 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1735 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1736 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1737 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1738 tlphy_ctl);
1739 }
1740
1741 if (debug)
1742 tlan_phy_print(dev);
1743 }
1744 }
1745
1746 return ack;
1747
1748 }
1749
1750
1751
1752
1753 /***************************************************************
1754 * tlan_handle_rx_eoc
1755 *
1756 * Returns:
1757 * 1
1758 * Parms:
1759 * dev Device assigned the IRQ that was
1760 * raised.
1761 * host_int The contents of the HOST_INT
1762 * port.
1763 *
1764 * This driver is structured to determine EOC occurrences by
1765 * reading the CSTAT member of the list structure. Rx EOC
1766 * interrupts are disabled via the DIO INTDIS register.
1767 * However, TLAN chips before revision 3.0 didn't have this
1768 * CSTAT member or a INTDIS register, so if this chip is
1769 * pre-3.0, process EOC interrupts normally.
1770 *
1771 **************************************************************/
1772
1773 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1774 {
1775 struct tlan_priv *priv = netdev_priv(dev);
1776 dma_addr_t head_list_phys;
1777 u32 ack = 1;
1778
1779 if (priv->tlan_rev < 0x30) {
1780 TLAN_DBG(TLAN_DEBUG_RX,
1781 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1782 priv->rx_head, priv->rx_tail);
1783 head_list_phys = priv->rx_list_dma
1784 + sizeof(struct tlan_list)*priv->rx_head;
1785 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1786 ack |= TLAN_HC_GO | TLAN_HC_RT;
1787 priv->rx_eoc_count++;
1788 }
1789
1790 return ack;
1791
1792 }
1793
1794
1795
1796
1797 /*****************************************************************************
1798 ******************************************************************************
1799
1800 ThunderLAN driver timer function
1801
1802 ******************************************************************************
1803 *****************************************************************************/
1804
1805
1806 /***************************************************************
1807 * tlan_timer
1808 *
1809 * Returns:
1810 * Nothing
1811 * Parms:
1812 * data A value given to add timer when
1813 * add_timer was called.
1814 *
1815 * This function handles timed functionality for the
1816 * TLAN driver. The two current timer uses are for
1817 * delaying for autonegotionation and driving the ACT LED.
1818 * - Autonegotiation requires being allowed about
1819 * 2 1/2 seconds before attempting to transmit a
1820 * packet. It would be a very bad thing to hang
1821 * the kernel this long, so the driver doesn't
1822 * allow transmission 'til after this time, for
1823 * certain PHYs. It would be much nicer if all
1824 * PHYs were interrupt-capable like the internal
1825 * PHY.
1826 * - The ACT LED, which shows adapter activity, is
1827 * driven by the driver, and so must be left on
1828 * for a short period to power up the LED so it
1829 * can be seen. This delay can be changed by
1830 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1831 * if desired. 100 ms produces a slightly
1832 * sluggish response.
1833 *
1834 **************************************************************/
1835
1836 static void tlan_timer(struct timer_list *t)
1837 {
1838 struct tlan_priv *priv = from_timer(priv, t, timer);
1839 struct net_device *dev = priv->dev;
1840 u32 elapsed;
1841 unsigned long flags = 0;
1842
1843 priv->timer.function = NULL;
1844
1845 switch (priv->timer_type) {
1846 case TLAN_TIMER_PHY_PDOWN:
1847 tlan_phy_power_down(dev);
1848 break;
1849 case TLAN_TIMER_PHY_PUP:
1850 tlan_phy_power_up(dev);
1851 break;
1852 case TLAN_TIMER_PHY_RESET:
1853 tlan_phy_reset(dev);
1854 break;
1855 case TLAN_TIMER_PHY_START_LINK:
1856 tlan_phy_start_link(dev);
1857 break;
1858 case TLAN_TIMER_PHY_FINISH_AN:
1859 tlan_phy_finish_auto_neg(dev);
1860 break;
1861 case TLAN_TIMER_FINISH_RESET:
1862 tlan_finish_reset(dev);
1863 break;
1864 case TLAN_TIMER_ACTIVITY:
1865 spin_lock_irqsave(&priv->lock, flags);
1866 if (priv->timer.function == NULL) {
1867 elapsed = jiffies - priv->timer_set_at;
1868 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1869 tlan_dio_write8(dev->base_addr,
1870 TLAN_LED_REG, TLAN_LED_LINK);
1871 } else {
1872 priv->timer.expires = priv->timer_set_at
1873 + TLAN_TIMER_ACT_DELAY;
1874 spin_unlock_irqrestore(&priv->lock, flags);
1875 add_timer(&priv->timer);
1876 break;
1877 }
1878 }
1879 spin_unlock_irqrestore(&priv->lock, flags);
1880 break;
1881 default:
1882 break;
1883 }
1884
1885 }
1886
1887
1888 /*****************************************************************************
1889 ******************************************************************************
1890
1891 ThunderLAN driver adapter related routines
1892
1893 ******************************************************************************
1894 *****************************************************************************/
1895
1896
1897 /***************************************************************
1898 * tlan_reset_lists
1899 *
1900 * Returns:
1901 * Nothing
1902 * Parms:
1903 * dev The device structure with the list
1904 * stuctures to be reset.
1905 *
1906 * This routine sets the variables associated with managing
1907 * the TLAN lists to their initial values.
1908 *
1909 **************************************************************/
1910
1911 static void tlan_reset_lists(struct net_device *dev)
1912 {
1913 struct tlan_priv *priv = netdev_priv(dev);
1914 int i;
1915 struct tlan_list *list;
1916 dma_addr_t list_phys;
1917 struct sk_buff *skb;
1918
1919 priv->tx_head = 0;
1920 priv->tx_tail = 0;
1921 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1922 list = priv->tx_list + i;
1923 list->c_stat = TLAN_CSTAT_UNUSED;
1924 list->buffer[0].address = 0;
1925 list->buffer[2].count = 0;
1926 list->buffer[2].address = 0;
1927 list->buffer[8].address = 0;
1928 list->buffer[9].address = 0;
1929 }
1930
1931 priv->rx_head = 0;
1932 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1933 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1934 list = priv->rx_list + i;
1935 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1936 list->c_stat = TLAN_CSTAT_READY;
1937 list->frame_size = TLAN_MAX_FRAME_SIZE;
1938 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1939 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1940 if (!skb)
1941 break;
1942
1943 list->buffer[0].address = pci_map_single(priv->pci_dev,
1944 skb->data,
1945 TLAN_MAX_FRAME_SIZE,
1946 PCI_DMA_FROMDEVICE);
1947 tlan_store_skb(list, skb);
1948 list->buffer[1].count = 0;
1949 list->buffer[1].address = 0;
1950 list->forward = list_phys + sizeof(struct tlan_list);
1951 }
1952
1953 /* in case ran out of memory early, clear bits */
1954 while (i < TLAN_NUM_RX_LISTS) {
1955 tlan_store_skb(priv->rx_list + i, NULL);
1956 ++i;
1957 }
1958 list->forward = 0;
1959
1960 }
1961
1962
1963 static void tlan_free_lists(struct net_device *dev)
1964 {
1965 struct tlan_priv *priv = netdev_priv(dev);
1966 int i;
1967 struct tlan_list *list;
1968 struct sk_buff *skb;
1969
1970 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1971 list = priv->tx_list + i;
1972 skb = tlan_get_skb(list);
1973 if (skb) {
1974 pci_unmap_single(
1975 priv->pci_dev,
1976 list->buffer[0].address,
1977 max(skb->len,
1978 (unsigned int)TLAN_MIN_FRAME_SIZE),
1979 PCI_DMA_TODEVICE);
1980 dev_kfree_skb_any(skb);
1981 list->buffer[8].address = 0;
1982 list->buffer[9].address = 0;
1983 }
1984 }
1985
1986 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1987 list = priv->rx_list + i;
1988 skb = tlan_get_skb(list);
1989 if (skb) {
1990 pci_unmap_single(priv->pci_dev,
1991 list->buffer[0].address,
1992 TLAN_MAX_FRAME_SIZE,
1993 PCI_DMA_FROMDEVICE);
1994 dev_kfree_skb_any(skb);
1995 list->buffer[8].address = 0;
1996 list->buffer[9].address = 0;
1997 }
1998 }
1999 }
2000
2001
2002
2003
2004 /***************************************************************
2005 * tlan_print_dio
2006 *
2007 * Returns:
2008 * Nothing
2009 * Parms:
2010 * io_base Base IO port of the device of
2011 * which to print DIO registers.
2012 *
2013 * This function prints out all the internal (DIO)
2014 * registers of a TLAN chip.
2015 *
2016 **************************************************************/
2017
2018 static void tlan_print_dio(u16 io_base)
2019 {
2020 u32 data0, data1;
2021 int i;
2022
2023 pr_info("Contents of internal registers for io base 0x%04hx\n",
2024 io_base);
2025 pr_info("Off. +0 +4\n");
2026 for (i = 0; i < 0x4C; i += 8) {
2027 data0 = tlan_dio_read32(io_base, i);
2028 data1 = tlan_dio_read32(io_base, i + 0x4);
2029 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2030 }
2031
2032 }
2033
2034
2035
2036
2037 /***************************************************************
2038 * TLan_PrintList
2039 *
2040 * Returns:
2041 * Nothing
2042 * Parms:
2043 * list A pointer to the struct tlan_list structure to
2044 * be printed.
2045 * type A string to designate type of list,
2046 * "Rx" or "Tx".
2047 * num The index of the list.
2048 *
2049 * This function prints out the contents of the list
2050 * pointed to by the list parameter.
2051 *
2052 **************************************************************/
2053
2054 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2055 {
2056 int i;
2057
2058 pr_info("%s List %d at %p\n", type, num, list);
2059 pr_info(" Forward = 0x%08x\n", list->forward);
2060 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2061 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2062 /* for (i = 0; i < 10; i++) { */
2063 for (i = 0; i < 2; i++) {
2064 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2065 i, list->buffer[i].count, list->buffer[i].address);
2066 }
2067
2068 }
2069
2070
2071
2072
2073 /***************************************************************
2074 * tlan_read_and_clear_stats
2075 *
2076 * Returns:
2077 * Nothing
2078 * Parms:
2079 * dev Pointer to device structure of adapter
2080 * to which to read stats.
2081 * record Flag indicating whether to add
2082 *
2083 * This functions reads all the internal status registers
2084 * of the TLAN chip, which clears them as a side effect.
2085 * It then either adds the values to the device's status
2086 * struct, or discards them, depending on whether record
2087 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2088 *
2089 **************************************************************/
2090
2091 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2092 {
2093 u32 tx_good, tx_under;
2094 u32 rx_good, rx_over;
2095 u32 def_tx, crc, code;
2096 u32 multi_col, single_col;
2097 u32 excess_col, late_col, loss;
2098
2099 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2100 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2101 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2102 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2103 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2104
2105 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2106 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2107 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2108 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2109 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2110
2111 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2112 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2113 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2114 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2115 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2116
2117 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2118 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2119 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2120 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2121 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2122
2123 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2124 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2125 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2126 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2127
2128 if (record) {
2129 dev->stats.rx_packets += rx_good;
2130 dev->stats.rx_errors += rx_over + crc + code;
2131 dev->stats.tx_packets += tx_good;
2132 dev->stats.tx_errors += tx_under + loss;
2133 dev->stats.collisions += multi_col
2134 + single_col + excess_col + late_col;
2135
2136 dev->stats.rx_over_errors += rx_over;
2137 dev->stats.rx_crc_errors += crc;
2138 dev->stats.rx_frame_errors += code;
2139
2140 dev->stats.tx_aborted_errors += tx_under;
2141 dev->stats.tx_carrier_errors += loss;
2142 }
2143
2144 }
2145
2146
2147
2148
2149 /***************************************************************
2150 * TLan_Reset
2151 *
2152 * Returns:
2153 * 0
2154 * Parms:
2155 * dev Pointer to device structure of adapter
2156 * to be reset.
2157 *
2158 * This function resets the adapter and it's physical
2159 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2160 * Programmer's Guide" for details. The routine tries to
2161 * implement what is detailed there, though adjustments
2162 * have been made.
2163 *
2164 **************************************************************/
2165
2166 static void
2167 tlan_reset_adapter(struct net_device *dev)
2168 {
2169 struct tlan_priv *priv = netdev_priv(dev);
2170 int i;
2171 u32 addr;
2172 u32 data;
2173 u8 data8;
2174
2175 priv->tlan_full_duplex = false;
2176 priv->phy_online = 0;
2177 netif_carrier_off(dev);
2178
2179 /* 1. Assert reset bit. */
2180
2181 data = inl(dev->base_addr + TLAN_HOST_CMD);
2182 data |= TLAN_HC_AD_RST;
2183 outl(data, dev->base_addr + TLAN_HOST_CMD);
2184
2185 udelay(1000);
2186
2187 /* 2. Turn off interrupts. (Probably isn't necessary) */
2188
2189 data = inl(dev->base_addr + TLAN_HOST_CMD);
2190 data |= TLAN_HC_INT_OFF;
2191 outl(data, dev->base_addr + TLAN_HOST_CMD);
2192
2193 /* 3. Clear AREGs and HASHs. */
2194
2195 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2196 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2197
2198 /* 4. Setup NetConfig register. */
2199
2200 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2201 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2202
2203 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2204
2205 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2206 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2207
2208 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2209
2210 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2211 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2212 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2213
2214 /* 7. Setup the remaining registers. */
2215
2216 if (priv->tlan_rev >= 0x30) {
2217 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2218 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2219 }
2220 tlan_phy_detect(dev);
2221 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2222
2223 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2224 data |= TLAN_NET_CFG_BIT;
2225 if (priv->aui == 1) {
2226 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2227 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2228 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2229 priv->tlan_full_duplex = true;
2230 } else {
2231 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2232 }
2233 }
2234
2235 /* don't power down internal PHY if we're going to use it */
2236 if (priv->phy_num == 0 ||
2237 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2238 data |= TLAN_NET_CFG_PHY_EN;
2239 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2240
2241 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2242 tlan_finish_reset(dev);
2243 else
2244 tlan_phy_power_down(dev);
2245
2246 }
2247
2248
2249
2250
2251 static void
2252 tlan_finish_reset(struct net_device *dev)
2253 {
2254 struct tlan_priv *priv = netdev_priv(dev);
2255 u8 data;
2256 u32 phy;
2257 u8 sio;
2258 u16 status;
2259 u16 partner;
2260 u16 tlphy_ctl;
2261 u16 tlphy_par;
2262 u16 tlphy_id1, tlphy_id2;
2263 int i;
2264
2265 phy = priv->phy[priv->phy_num];
2266
2267 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2268 if (priv->tlan_full_duplex)
2269 data |= TLAN_NET_CMD_DUPLEX;
2270 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2271 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2272 if (priv->phy_num == 0)
2273 data |= TLAN_NET_MASK_MASK7;
2274 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2275 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2276 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2277 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2278
2279 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2280 (priv->aui)) {
2281 status = MII_GS_LINK;
2282 netdev_info(dev, "Link forced\n");
2283 } else {
2284 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2285 udelay(1000);
2286 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2287 if (status & MII_GS_LINK) {
2288 /* We only support link info on Nat.Sem. PHY's */
2289 if ((tlphy_id1 == NAT_SEM_ID1) &&
2290 (tlphy_id2 == NAT_SEM_ID2)) {
2291 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2292 &partner);
2293 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2294 &tlphy_par);
2295
2296 netdev_info(dev,
2297 "Link active, %s %uMbps %s-Duplex\n",
2298 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2299 ? "forced" : "Autonegotiation enabled,",
2300 tlphy_par & TLAN_PHY_SPEED_100
2301 ? 100 : 10,
2302 tlphy_par & TLAN_PHY_DUPLEX_FULL
2303 ? "Full" : "Half");
2304
2305 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2306 netdev_info(dev, "Partner capability:");
2307 for (i = 5; i < 10; i++)
2308 if (partner & (1 << i))
2309 pr_cont(" %s",
2310 media[i-5]);
2311 pr_cont("\n");
2312 }
2313 } else
2314 netdev_info(dev, "Link active\n");
2315 /* Enabling link beat monitoring */
2316 priv->media_timer.expires = jiffies + HZ;
2317 add_timer(&priv->media_timer);
2318 }
2319 }
2320
2321 if (priv->phy_num == 0) {
2322 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2323 tlphy_ctl |= TLAN_TC_INTEN;
2324 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2325 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2326 sio |= TLAN_NET_SIO_MINTEN;
2327 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2328 }
2329
2330 if (status & MII_GS_LINK) {
2331 tlan_set_mac(dev, 0, dev->dev_addr);
2332 priv->phy_online = 1;
2333 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2334 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2335 outb((TLAN_HC_REQ_INT >> 8),
2336 dev->base_addr + TLAN_HOST_CMD + 1);
2337 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2338 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2339 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2340 netif_carrier_on(dev);
2341 } else {
2342 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2343 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2344 return;
2345 }
2346 tlan_set_multicast_list(dev);
2347
2348 }
2349
2350
2351
2352
2353 /***************************************************************
2354 * tlan_set_mac
2355 *
2356 * Returns:
2357 * Nothing
2358 * Parms:
2359 * dev Pointer to device structure of adapter
2360 * on which to change the AREG.
2361 * areg The AREG to set the address in (0 - 3).
2362 * mac A pointer to an array of chars. Each
2363 * element stores one byte of the address.
2364 * IE, it isn't in ascii.
2365 *
2366 * This function transfers a MAC address to one of the
2367 * TLAN AREGs (address registers). The TLAN chip locks
2368 * the register on writing to offset 0 and unlocks the
2369 * register after writing to offset 5. If NULL is passed
2370 * in mac, then the AREG is filled with 0's.
2371 *
2372 **************************************************************/
2373
2374 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2375 {
2376 int i;
2377
2378 areg *= 6;
2379
2380 if (mac != NULL) {
2381 for (i = 0; i < 6; i++)
2382 tlan_dio_write8(dev->base_addr,
2383 TLAN_AREG_0 + areg + i, mac[i]);
2384 } else {
2385 for (i = 0; i < 6; i++)
2386 tlan_dio_write8(dev->base_addr,
2387 TLAN_AREG_0 + areg + i, 0);
2388 }
2389
2390 }
2391
2392
2393
2394
2395 /*****************************************************************************
2396 ******************************************************************************
2397
2398 ThunderLAN driver PHY layer routines
2399
2400 ******************************************************************************
2401 *****************************************************************************/
2402
2403
2404
2405 /*********************************************************************
2406 * tlan_phy_print
2407 *
2408 * Returns:
2409 * Nothing
2410 * Parms:
2411 * dev A pointer to the device structure of the
2412 * TLAN device having the PHYs to be detailed.
2413 *
2414 * This function prints the registers a PHY (aka transceiver).
2415 *
2416 ********************************************************************/
2417
2418 static void tlan_phy_print(struct net_device *dev)
2419 {
2420 struct tlan_priv *priv = netdev_priv(dev);
2421 u16 i, data0, data1, data2, data3, phy;
2422
2423 phy = priv->phy[priv->phy_num];
2424
2425 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2426 netdev_info(dev, "Unmanaged PHY\n");
2427 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2428 netdev_info(dev, "PHY 0x%02x\n", phy);
2429 pr_info(" Off. +0 +1 +2 +3\n");
2430 for (i = 0; i < 0x20; i += 4) {
2431 tlan_mii_read_reg(dev, phy, i, &data0);
2432 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2433 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2434 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2435 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2436 i, data0, data1, data2, data3);
2437 }
2438 } else {
2439 netdev_info(dev, "Invalid PHY\n");
2440 }
2441
2442 }
2443
2444
2445
2446
2447 /*********************************************************************
2448 * tlan_phy_detect
2449 *
2450 * Returns:
2451 * Nothing
2452 * Parms:
2453 * dev A pointer to the device structure of the adapter
2454 * for which the PHY needs determined.
2455 *
2456 * So far I've found that adapters which have external PHYs
2457 * may also use the internal PHY for part of the functionality.
2458 * (eg, AUI/Thinnet). This function finds out if this TLAN
2459 * chip has an internal PHY, and then finds the first external
2460 * PHY (starting from address 0) if it exists).
2461 *
2462 ********************************************************************/
2463
2464 static void tlan_phy_detect(struct net_device *dev)
2465 {
2466 struct tlan_priv *priv = netdev_priv(dev);
2467 u16 control;
2468 u16 hi;
2469 u16 lo;
2470 u32 phy;
2471
2472 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2473 priv->phy_num = 0xffff;
2474 return;
2475 }
2476
2477 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2478
2479 if (hi != 0xffff)
2480 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2481 else
2482 priv->phy[0] = TLAN_PHY_NONE;
2483
2484 priv->phy[1] = TLAN_PHY_NONE;
2485 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2486 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2487 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2488 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2489 if ((control != 0xffff) ||
2490 (hi != 0xffff) || (lo != 0xffff)) {
2491 TLAN_DBG(TLAN_DEBUG_GNRL,
2492 "PHY found at %02x %04x %04x %04x\n",
2493 phy, control, hi, lo);
2494 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2495 (phy != TLAN_PHY_MAX_ADDR)) {
2496 priv->phy[1] = phy;
2497 }
2498 }
2499 }
2500
2501 if (priv->phy[1] != TLAN_PHY_NONE)
2502 priv->phy_num = 1;
2503 else if (priv->phy[0] != TLAN_PHY_NONE)
2504 priv->phy_num = 0;
2505 else
2506 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2507
2508 }
2509
2510
2511
2512
2513 static void tlan_phy_power_down(struct net_device *dev)
2514 {
2515 struct tlan_priv *priv = netdev_priv(dev);
2516 u16 value;
2517
2518 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2519 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2520 tlan_mii_sync(dev->base_addr);
2521 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2522 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2523 /* if using internal PHY, the external PHY must be powered on */
2524 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2525 value = MII_GC_ISOLATE; /* just isolate it from MII */
2526 tlan_mii_sync(dev->base_addr);
2527 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2528 }
2529
2530 /* Wait for 50 ms and powerup
2531 * This is abitrary. It is intended to make sure the
2532 * transceiver settles.
2533 */
2534 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2535
2536 }
2537
2538
2539
2540
2541 static void tlan_phy_power_up(struct net_device *dev)
2542 {
2543 struct tlan_priv *priv = netdev_priv(dev);
2544 u16 value;
2545
2546 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2547 tlan_mii_sync(dev->base_addr);
2548 value = MII_GC_LOOPBK;
2549 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2550 tlan_mii_sync(dev->base_addr);
2551 /* Wait for 500 ms and reset the
2552 * transceiver. The TLAN docs say both 50 ms and
2553 * 500 ms, so do the longer, just in case.
2554 */
2555 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2556
2557 }
2558
2559
2560
2561
2562 static void tlan_phy_reset(struct net_device *dev)
2563 {
2564 struct tlan_priv *priv = netdev_priv(dev);
2565 u16 phy;
2566 u16 value;
2567 unsigned long timeout = jiffies + HZ;
2568
2569 phy = priv->phy[priv->phy_num];
2570
2571 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2572 tlan_mii_sync(dev->base_addr);
2573 value = MII_GC_LOOPBK | MII_GC_RESET;
2574 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2575 do {
2576 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2577 if (time_after(jiffies, timeout)) {
2578 netdev_err(dev, "PHY reset timeout\n");
2579 return;
2580 }
2581 } while (value & MII_GC_RESET);
2582
2583 /* Wait for 500 ms and initialize.
2584 * I don't remember why I wait this long.
2585 * I've changed this to 50ms, as it seems long enough.
2586 */
2587 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2588
2589 }
2590
2591
2592
2593
2594 static void tlan_phy_start_link(struct net_device *dev)
2595 {
2596 struct tlan_priv *priv = netdev_priv(dev);
2597 u16 ability;
2598 u16 control;
2599 u16 data;
2600 u16 phy;
2601 u16 status;
2602 u16 tctl;
2603
2604 phy = priv->phy[priv->phy_num];
2605 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2606 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2607 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2608
2609 if ((status & MII_GS_AUTONEG) &&
2610 (!priv->aui)) {
2611 ability = status >> 11;
2612 if (priv->speed == TLAN_SPEED_10 &&
2613 priv->duplex == TLAN_DUPLEX_HALF) {
2614 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2615 } else if (priv->speed == TLAN_SPEED_10 &&
2616 priv->duplex == TLAN_DUPLEX_FULL) {
2617 priv->tlan_full_duplex = true;
2618 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2619 } else if (priv->speed == TLAN_SPEED_100 &&
2620 priv->duplex == TLAN_DUPLEX_HALF) {
2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2622 } else if (priv->speed == TLAN_SPEED_100 &&
2623 priv->duplex == TLAN_DUPLEX_FULL) {
2624 priv->tlan_full_duplex = true;
2625 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2626 } else {
2627
2628 /* Set Auto-Neg advertisement */
2629 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2630 (ability << 5) | 1);
2631 /* Enablee Auto-Neg */
2632 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2633 /* Restart Auto-Neg */
2634 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2635 /* Wait for 4 sec for autonegotiation
2636 * to complete. The max spec time is less than this
2637 * but the card need additional time to start AN.
2638 * .5 sec should be plenty extra.
2639 */
2640 netdev_info(dev, "Starting autonegotiation\n");
2641 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2642 return;
2643 }
2644
2645 }
2646
2647 if ((priv->aui) && (priv->phy_num != 0)) {
2648 priv->phy_num = 0;
2649 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2650 | TLAN_NET_CFG_PHY_EN;
2651 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2652 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2653 return;
2654 } else if (priv->phy_num == 0) {
2655 control = 0;
2656 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2657 if (priv->aui) {
2658 tctl |= TLAN_TC_AUISEL;
2659 } else {
2660 tctl &= ~TLAN_TC_AUISEL;
2661 if (priv->duplex == TLAN_DUPLEX_FULL) {
2662 control |= MII_GC_DUPLEX;
2663 priv->tlan_full_duplex = true;
2664 }
2665 if (priv->speed == TLAN_SPEED_100)
2666 control |= MII_GC_SPEEDSEL;
2667 }
2668 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2669 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2670 }
2671
2672 /* Wait for 2 sec to give the transceiver time
2673 * to establish link.
2674 */
2675 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2676
2677 }
2678
2679
2680
2681
2682 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2683 {
2684 struct tlan_priv *priv = netdev_priv(dev);
2685 u16 an_adv;
2686 u16 an_lpa;
2687 u16 mode;
2688 u16 phy;
2689 u16 status;
2690
2691 phy = priv->phy[priv->phy_num];
2692
2693 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2694 udelay(1000);
2695 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2696
2697 if (!(status & MII_GS_AUTOCMPLT)) {
2698 /* Wait for 8 sec to give the process
2699 * more time. Perhaps we should fail after a while.
2700 */
2701 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2702 return;
2703 }
2704
2705 netdev_info(dev, "Autonegotiation complete\n");
2706 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2707 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2708 mode = an_adv & an_lpa & 0x03E0;
2709 if (mode & 0x0100)
2710 priv->tlan_full_duplex = true;
2711 else if (!(mode & 0x0080) && (mode & 0x0040))
2712 priv->tlan_full_duplex = true;
2713
2714 /* switch to internal PHY for 10 Mbps */
2715 if ((!(mode & 0x0180)) &&
2716 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2717 (priv->phy_num != 0)) {
2718 priv->phy_num = 0;
2719 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2720 return;
2721 }
2722
2723 if (priv->phy_num == 0) {
2724 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2725 (an_adv & an_lpa & 0x0040)) {
2726 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2727 MII_GC_AUTOENB | MII_GC_DUPLEX);
2728 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2729 } else {
2730 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2731 MII_GC_AUTOENB);
2732 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2733 }
2734 }
2735
2736 /* Wait for 100 ms. No reason in partiticular.
2737 */
2738 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2739
2740 }
2741
2742
2743 /*********************************************************************
2744 *
2745 * tlan_phy_monitor
2746 *
2747 * Returns:
2748 * None
2749 *
2750 * Params:
2751 * data The device structure of this device.
2752 *
2753 *
2754 * This function monitors PHY condition by reading the status
2755 * register via the MII bus, controls LINK LED and notifies the
2756 * kernel about link state.
2757 *
2758 *******************************************************************/
2759
2760 static void tlan_phy_monitor(struct timer_list *t)
2761 {
2762 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2763 struct net_device *dev = priv->dev;
2764 u16 phy;
2765 u16 phy_status;
2766
2767 phy = priv->phy[priv->phy_num];
2768
2769 /* Get PHY status register */
2770 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2771
2772 /* Check if link has been lost */
2773 if (!(phy_status & MII_GS_LINK)) {
2774 if (netif_carrier_ok(dev)) {
2775 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2776 dev->name);
2777 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2778 netif_carrier_off(dev);
2779 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2780 /* power down internal PHY */
2781 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2782 MII_GC_ISOLATE;
2783
2784 tlan_mii_sync(dev->base_addr);
2785 tlan_mii_write_reg(dev, priv->phy[0],
2786 MII_GEN_CTL, data);
2787 /* set to external PHY */
2788 priv->phy_num = 1;
2789 /* restart autonegotiation */
2790 tlan_set_timer(dev, msecs_to_jiffies(400),
2791 TLAN_TIMER_PHY_PDOWN);
2792 return;
2793 }
2794 }
2795 }
2796
2797 /* Link restablished? */
2798 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2799 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2800 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2801 dev->name);
2802 netif_carrier_on(dev);
2803 }
2804 priv->media_timer.expires = jiffies + HZ;
2805 add_timer(&priv->media_timer);
2806 }
2807
2808
2809 /*****************************************************************************
2810 ******************************************************************************
2811
2812 ThunderLAN driver MII routines
2813
2814 these routines are based on the information in chap. 2 of the
2815 "ThunderLAN Programmer's Guide", pp. 15-24.
2816
2817 ******************************************************************************
2818 *****************************************************************************/
2819
2820
2821 /***************************************************************
2822 * tlan_mii_read_reg
2823 *
2824 * Returns:
2825 * false if ack received ok
2826 * true if no ack received or other error
2827 *
2828 * Parms:
2829 * dev The device structure containing
2830 * The io address and interrupt count
2831 * for this device.
2832 * phy The address of the PHY to be queried.
2833 * reg The register whose contents are to be
2834 * retrieved.
2835 * val A pointer to a variable to store the
2836 * retrieved value.
2837 *
2838 * This function uses the TLAN's MII bus to retrieve the contents
2839 * of a given register on a PHY. It sends the appropriate info
2840 * and then reads the 16-bit register value from the MII bus via
2841 * the TLAN SIO register.
2842 *
2843 **************************************************************/
2844
2845 static bool
2846 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2847 {
2848 u8 nack;
2849 u16 sio, tmp;
2850 u32 i;
2851 bool err;
2852 int minten;
2853 struct tlan_priv *priv = netdev_priv(dev);
2854 unsigned long flags = 0;
2855
2856 err = false;
2857 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2858 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2859
2860 if (!in_irq())
2861 spin_lock_irqsave(&priv->lock, flags);
2862
2863 tlan_mii_sync(dev->base_addr);
2864
2865 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2866 if (minten)
2867 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2868
2869 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2870 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2871 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2872 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2873
2874
2875 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2876
2877 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2878 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2879 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2880
2881 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2882 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2883 if (nack) { /* no ACK, so fake it */
2884 for (i = 0; i < 16; i++) {
2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2886 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887 }
2888 tmp = 0xffff;
2889 err = true;
2890 } else { /* ACK, so read data */
2891 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2892 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2893 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2894 tmp |= i;
2895 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2896 }
2897 }
2898
2899
2900 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2901 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2902
2903 if (minten)
2904 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2905
2906 *val = tmp;
2907
2908 if (!in_irq())
2909 spin_unlock_irqrestore(&priv->lock, flags);
2910
2911 return err;
2912
2913 }
2914
2915
2916
2917
2918 /***************************************************************
2919 * tlan_mii_send_data
2920 *
2921 * Returns:
2922 * Nothing
2923 * Parms:
2924 * base_port The base IO port of the adapter in
2925 * question.
2926 * dev The address of the PHY to be queried.
2927 * data The value to be placed on the MII bus.
2928 * num_bits The number of bits in data that are to
2929 * be placed on the MII bus.
2930 *
2931 * This function sends on sequence of bits on the MII
2932 * configuration bus.
2933 *
2934 **************************************************************/
2935
2936 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2937 {
2938 u16 sio;
2939 u32 i;
2940
2941 if (num_bits == 0)
2942 return;
2943
2944 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2945 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2946 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2947
2948 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2949 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2950 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2951 if (data & i)
2952 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2953 else
2954 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2955 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2956 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2957 }
2958
2959 }
2960
2961
2962
2963
2964 /***************************************************************
2965 * TLan_MiiSync
2966 *
2967 * Returns:
2968 * Nothing
2969 * Parms:
2970 * base_port The base IO port of the adapter in
2971 * question.
2972 *
2973 * This functions syncs all PHYs in terms of the MII configuration
2974 * bus.
2975 *
2976 **************************************************************/
2977
2978 static void tlan_mii_sync(u16 base_port)
2979 {
2980 int i;
2981 u16 sio;
2982
2983 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2984 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2985
2986 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2987 for (i = 0; i < 32; i++) {
2988 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2989 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2990 }
2991
2992 }
2993
2994
2995
2996
2997 /***************************************************************
2998 * tlan_mii_write_reg
2999 *
3000 * Returns:
3001 * Nothing
3002 * Parms:
3003 * dev The device structure for the device
3004 * to write to.
3005 * phy The address of the PHY to be written to.
3006 * reg The register whose contents are to be
3007 * written.
3008 * val The value to be written to the register.
3009 *
3010 * This function uses the TLAN's MII bus to write the contents of a
3011 * given register on a PHY. It sends the appropriate info and then
3012 * writes the 16-bit register value from the MII configuration bus
3013 * via the TLAN SIO register.
3014 *
3015 **************************************************************/
3016
3017 static void
3018 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3019 {
3020 u16 sio;
3021 int minten;
3022 unsigned long flags = 0;
3023 struct tlan_priv *priv = netdev_priv(dev);
3024
3025 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3026 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3027
3028 if (!in_irq())
3029 spin_lock_irqsave(&priv->lock, flags);
3030
3031 tlan_mii_sync(dev->base_addr);
3032
3033 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3034 if (minten)
3035 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3036
3037 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3038 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3039 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3040 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3041
3042 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3043 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3044
3045 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3046 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3047
3048 if (minten)
3049 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3050
3051 if (!in_irq())
3052 spin_unlock_irqrestore(&priv->lock, flags);
3053
3054 }
3055
3056
3057
3058
3059 /*****************************************************************************
3060 ******************************************************************************
3061
3062 ThunderLAN driver eeprom routines
3063
3064 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3065 EEPROM. these functions are based on information in microchip's
3066 data sheet. I don't know how well this functions will work with
3067 other Eeproms.
3068
3069 ******************************************************************************
3070 *****************************************************************************/
3071
3072
3073 /***************************************************************
3074 * tlan_ee_send_start
3075 *
3076 * Returns:
3077 * Nothing
3078 * Parms:
3079 * io_base The IO port base address for the
3080 * TLAN device with the EEPROM to
3081 * use.
3082 *
3083 * This function sends a start cycle to an EEPROM attached
3084 * to a TLAN chip.
3085 *
3086 **************************************************************/
3087
3088 static void tlan_ee_send_start(u16 io_base)
3089 {
3090 u16 sio;
3091
3092 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3093 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3094
3095 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3096 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3097 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3098 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3099 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3100
3101 }
3102
3103
3104
3105
3106 /***************************************************************
3107 * tlan_ee_send_byte
3108 *
3109 * Returns:
3110 * If the correct ack was received, 0, otherwise 1
3111 * Parms: io_base The IO port base address for the
3112 * TLAN device with the EEPROM to
3113 * use.
3114 * data The 8 bits of information to
3115 * send to the EEPROM.
3116 * stop If TLAN_EEPROM_STOP is passed, a
3117 * stop cycle is sent after the
3118 * byte is sent after the ack is
3119 * read.
3120 *
3121 * This function sends a byte on the serial EEPROM line,
3122 * driving the clock to send each bit. The function then
3123 * reverses transmission direction and reads an acknowledge
3124 * bit.
3125 *
3126 **************************************************************/
3127
3128 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3129 {
3130 int err;
3131 u8 place;
3132 u16 sio;
3133
3134 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3135 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3136
3137 /* Assume clock is low, tx is enabled; */
3138 for (place = 0x80; place != 0; place >>= 1) {
3139 if (place & data)
3140 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3141 else
3142 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3143 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3144 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3145 }
3146 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3147 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3148 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3149 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3150 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3151
3152 if ((!err) && stop) {
3153 /* STOP, raise data while clock is high */
3154 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3155 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3156 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3157 }
3158
3159 return err;
3160
3161 }
3162
3163
3164
3165
3166 /***************************************************************
3167 * tlan_ee_receive_byte
3168 *
3169 * Returns:
3170 * Nothing
3171 * Parms:
3172 * io_base The IO port base address for the
3173 * TLAN device with the EEPROM to
3174 * use.
3175 * data An address to a char to hold the
3176 * data sent from the EEPROM.
3177 * stop If TLAN_EEPROM_STOP is passed, a
3178 * stop cycle is sent after the
3179 * byte is received, and no ack is
3180 * sent.
3181 *
3182 * This function receives 8 bits of data from the EEPROM
3183 * over the serial link. It then sends and ack bit, or no
3184 * ack and a stop bit. This function is used to retrieve
3185 * data after the address of a byte in the EEPROM has been
3186 * sent.
3187 *
3188 **************************************************************/
3189
3190 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3191 {
3192 u8 place;
3193 u16 sio;
3194
3195 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3196 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3197 *data = 0;
3198
3199 /* Assume clock is low, tx is enabled; */
3200 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3201 for (place = 0x80; place; place >>= 1) {
3202 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3203 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3204 *data |= place;
3205 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3206 }
3207
3208 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3209 if (!stop) {
3210 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3211 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3212 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3213 } else {
3214 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3215 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3216 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3217 /* STOP, raise data while clock is high */
3218 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3219 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3220 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3221 }
3222
3223 }
3224
3225
3226
3227
3228 /***************************************************************
3229 * tlan_ee_read_byte
3230 *
3231 * Returns:
3232 * No error = 0, else, the stage at which the error
3233 * occurred.
3234 * Parms:
3235 * io_base The IO port base address for the
3236 * TLAN device with the EEPROM to
3237 * use.
3238 * ee_addr The address of the byte in the
3239 * EEPROM whose contents are to be
3240 * retrieved.
3241 * data An address to a char to hold the
3242 * data obtained from the EEPROM.
3243 *
3244 * This function reads a byte of information from an byte
3245 * cell in the EEPROM.
3246 *
3247 **************************************************************/
3248
3249 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3250 {
3251 int err;
3252 struct tlan_priv *priv = netdev_priv(dev);
3253 unsigned long flags = 0;
3254 int ret = 0;
3255
3256 spin_lock_irqsave(&priv->lock, flags);
3257
3258 tlan_ee_send_start(dev->base_addr);
3259 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3260 if (err) {
3261 ret = 1;
3262 goto fail;
3263 }
3264 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3265 if (err) {
3266 ret = 2;
3267 goto fail;
3268 }
3269 tlan_ee_send_start(dev->base_addr);
3270 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3271 if (err) {
3272 ret = 3;
3273 goto fail;
3274 }
3275 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3276 fail:
3277 spin_unlock_irqrestore(&priv->lock, flags);
3278
3279 return ret;
3280
3281 }
3282
3283
3284
CRIS linux kernel tree